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

Abstract

We provide an air conditioning and ventilation system that can notify users of changes in the installation environment. [Solution] The air conditioning and ventilation system 100 comprises a ventilation device 2, an air quality sensor 7, a control unit 603 that controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7, and a monitoring unit 604 that monitors the control operation of the control unit 603. The control unit 603 controls the ventilation device 2 so that the CO2 concentration CM is less than a first threshold TH1. The monitoring unit 604 monitors the number of times N that the control unit 603 controls the ventilation device 2 to operate at a high airflow rate during the working hours of business person P in the office where the air quality sensor 7 and the ventilation device 2 are installed. If the number N deviates from a predetermined range, the monitoring unit 604 notifies that the installation environment of the ventilation device 2 may have changed.

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 changes the ventilation air volume according to the indoor CO2 concentration.

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 notify that the installation environment has changed.

Means for Solving the Problems

[0005] The air-conditioning and ventilation system in the present disclosure includes at least one of an air conditioner having a ventilation function and a ventilation device, at least one air quality sensor, a control unit that controls at least one of the air conditioner and the ventilation device based on a measured value detected by the air quality sensor, and a monitoring unit that monitors a control operation of the control unit. The control unit controls at least one of the air conditioner and the ventilation device so as to satisfy a predetermined condition regarding the measured value. The monitoring unit monitors at least one of the number of times and the time during which the control unit executes a predetermined control within a predetermined monitoring period, and notifies that the installation environment of at least one of the air conditioner and the ventilation device may have changed when at least one of the number of times and the time deviates from a predetermined range.

[0006] Furthermore, the control method for an air conditioning and ventilation system in this disclosure comprises at least one of an air conditioning device having a ventilation function and a ventilation device, at least one air quality sensor, and a control device that controls at least one of the air conditioning device and the ventilation device based on a measurement value detected by the air quality sensor, wherein the control device performs a control step of controlling at least one of the air conditioning device and the ventilation device so as to satisfy predetermined conditions relating to the measurement value, a monitoring step of monitoring at least one of the number of times and time during which the control step has performed predetermined control within a predetermined monitoring period, and a notification step of notifying that the installation environment of at least one of the air conditioning device and the ventilation device may have changed if at least one of the number of times and time deviates from a predetermined range.

[0007] Furthermore, the control device in this disclosure comprises a control unit that controls at least one of an air conditioning system having a ventilation function and a ventilation system based on measured values ​​detected by an air quality sensor, and a monitoring unit that monitors the control operation of the control unit, wherein the control unit controls at least one of the air conditioning system and the ventilation system to satisfy predetermined conditions relating to the measured values, and the monitoring unit monitors at least one of the number of times and the time during which the control unit performs predetermined control within a predetermined monitoring period, and notifies that the installation environment of at least one of the air conditioning system and the ventilation system may have changed if at least one of the number of times and the time deviates from a predetermined range.

[0008] Furthermore, the program in this disclosure causes the processor of the control device to execute a control step that controls at least one of an air conditioning system having a ventilation function and a ventilation device so as to satisfy predetermined conditions related to the measured values ​​detected by the air quality sensor; a monitoring step that monitors at least one of the number of times and the time during which the control step performs predetermined control within a predetermined monitoring period; and a notification step that notifies that the installation environment of at least one of the air conditioning system and the ventilation device may have changed if at least one of the number of times and the time deviates from a predetermined range. [Effects of the Invention]

[0009] The air conditioning and ventilation system, the control method for the air conditioning and ventilation system, the control device, and the program described herein can notify that the installation environment has changed. [Brief explanation of the drawing]

[0010] [Figure 1] Diagram showing the configuration of the air conditioning and ventilation system in this embodiment. [Figure 2] This figure shows the configuration of the indoor unit, ventilation system, and server system in this embodiment. [Figure 3] Flowchart showing the processing of the server device in this embodiment [Figure 4] Flowchart showing the processing of 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, for example, when installing air conditioning systems in spaces such as offices, the capacity, installation location, and number of units were considered to ensure a certain level of effectiveness, taking into account factors such as the number of people occupying the space and the sunlight conditions. However, it has been found that if the environment of the space where the air conditioning system is installed changes after the system is installed, the effects that were initially expected may not be achieved. Furthermore, if the environment in which the air conditioning system is installed changes in an inappropriate manner (for example, if the number of users residing in the room where the air conditioning system is installed increases or decreases), it is necessary to detect the change and respond promptly. In other words, the inventors identified the problem of notifying users of changes in the installation environment, and the subject matter of this disclosure was established in order to solve this problem. Therefore, this disclosure provides an air conditioning and ventilation system that can notify of changes in the installation environment, a control method for the air conditioning and ventilation system, a control device, and a program.

[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 that provides air conditioning and ventilation to an air-conditioned and ventilated space S located inside a building H, such as a residence or facility. The air conditioning and ventilation system 100 comprises an indoor unit 1 and a ventilation device 2. The air-conditioned and ventilated space S is the air-conditioned space that is air-conditioned by the indoor unit 1 and the ventilated space that is ventilated by the ventilation device 2. An example of an air-conditioned and ventilated space S is a room located inside a building H.

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

[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 4, 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 4. In addition, the air conditioner 3 ventilates the air-conditioned and ventilated space S. The air conditioner 3 has an air supply ventilation function and an exhaust ventilation function. The "air supply ventilation function" is a function in which the outdoor unit 4 sucks in outside air, and the indoor unit 1 sends the sucked outside air to the air-conditioned and ventilated space S. The "exhaust ventilation function" is a function in which the indoor unit 1 sucks in the air in the air-conditioned and ventilated space S, and the outdoor unit 4 sends the sucked air to the outside.

[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 line 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. The ventilation device 2 is installed in the building H. The ventilation device 2 is provided with a blower fan 21 and a fan motor 22 for driving the blower fan 21. The ventilation device 2 supplies air to the air-conditioned and ventilated space S by means of the blower fan 21 and the fan motor 22. The ventilation device 2 of the present embodiment exemplifies a ceiling-embedded type device. Note that the form of the ventilation device 2 is not limited to the ceiling-embedded type device. For example, it may have a duct shape that communicates the air-conditioned and ventilated space S with the outside of the building H. Further, the ventilation device 2 may be provided with a filter for collecting dust, fine particles, virus droplets, aerosols, and the like. Note that an exhaust port is provided in the air-conditioned and ventilated space S corresponding to the air supply of the ventilation device 2.

[0019] The ventilation device 2 of the present embodiment will describe the case of supplying air to the air-conditioned and ventilated space S, but it may also exhaust air from the air-conditioned and ventilated space S. In this case, an intake port is provided in the air-conditioned and ventilated space S corresponding to the exhaust of the ventilation device 2. Further, the ventilation device 2 may supply air to the air-conditioned and ventilated space S and exhaust air from the air-conditioned and ventilated space S.

[0020] The ventilation device 2 is communicatively connected to the communication device 5 and communicates with the server device 6 via the communication device 5. The ventilation device 2 of the present embodiment periodically transmits the second log data D2 to the server device 6. Details of the second log data D2 will be described later.

[0021] The ventilation device of the present embodiment switches the ventilation air volume according to the CO2 concentration CM detected by the air quality sensor 7. The ventilation device 2 of the present embodiment can switch the ventilation air volume between weak wind and strong wind. Note that the strong wind has a larger air volume than the weak wind. The control of the ventilation device 2 is executed by the control unit 603 of the server device 6. The control unit 603 of the server device 6 will be further described with reference to FIG. 2.

[0022] The air-conditioning and ventilation system 100 includes 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 "measured value". The air conditioning and ventilation system 100 may also be equipped with multiple air quality sensors 7.

[0023] 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.

[0024] The air conditioning and ventilation system 100 may be equipped with multiple indoor sensors 8. The number of indoor 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 indoor sensor 8 detects the temperature of the air-conditioned ventilation space S (hereinafter referred to as "space temperature") and the humidity of the air-conditioned ventilation space S (hereinafter referred to as "space humidity"). The indoor sensor 8 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. In Figure 1, the indoor sensor 8 is shown as an example of being installed on a stand in the air-conditioned ventilation space S, but the installation location of the indoor sensor 8 is not limited to a stand, and may be, for example, on the wall of the air-conditioned ventilation space S.

[0025] The air conditioning and ventilation system 100 may be equipped with an outside air sensor 9. The number of outside air sensors 9 in the air conditioning and ventilation system 100 may be multiple. The outside air sensor 9 detects the temperature of the outside air supplied by the ventilation device 2 to the ventilated space S (hereinafter referred to as "outside air temperature") and the humidity of the outside air (hereinafter referred to as "outside air humidity"). The outside air sensor 9 communicates with the communication device 5 and communicates with the server device 6 via the communication device 5. In Figure 1, the outside air sensor 9 is shown as an example of being installed outside the building H, but the installation location of the outside air sensor 9 is not limited to outside the building H, and may be inside the ventilation device 2, for example.

[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. Indoor Unit Configuration] Next, we will explain the configuration of indoor unit 1. Figure 2 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.

[0028] 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.

[0029] 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).

[0030] 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.

[0031] The second indoor communication unit 12 is equipped with communication hardware such as a communication circuit and communicates with the outdoor unit 4 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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 operating in cooling or heating mode, 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 modes 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 minimized.

[0037] The second indoor communication control unit 102 communicates with the outdoor unit 4 via the second indoor communication unit 12.

[0038] 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.

[0039] [1-3. 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 second ventilation communication unit 25, and a fan motor 26.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The fan motor 26 rotates the blower fan 21 at a predetermined rotational speed according to the control of the ventilation control device 23.

[0044] 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.

[0045] 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 ventilation airflow of the ventilation device 2.

[0046] The ventilation operation control unit 203 controls the operation of the ventilation system 2 according to instructions from the server device 6.

[0047] [1-4. 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".

[0048] Server memory 60A is memory that stores programs and data. Server memory 60A stores data processed by the control program 606, log DB (Data Base) 607, 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 606 corresponds to an example of a "program".

[0049] Log DB607 is a database that stores log data D in chronological order for a predetermined period from the present to the past. Log DB607 stores log data D by separating it into fields according to the type of log data D. Specifically, Log DB607 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.

[0050] The server communication unit 61 is equipped with communication hardware such as a communication circuit and communicates with the indoor unit 1, the ventilation device 2, and the air quality sensor 7 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.

[0051] The server processor 60B functions as a server communication control unit 601, storage unit 602, control unit 603, monitoring unit 604, and threshold setting unit 605 by reading and executing the control program 606 stored in the server memory 60A.

[0052] 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.

[0053] The storage unit 602 stores the log data D in chronological order in the log DB 607. When the server communication control unit 601 receives the first log data D1 from the indoor unit 1, the storage unit 602 stores the received first log data D1 in the log DB 607. When the server communication control unit 601 receives the second log data D2 from the ventilation device 2, the storage unit 602 stores the received second log data D2 in the log DB 607. When the server communication control unit 601 receives the third log data D3 from the air quality sensor 7, the storage unit 602 stores the received third log data D3 in the log DB 607.

[0054] The control unit 603 controls at least one of the air conditioning unit 3 and the ventilation unit 2 based on the measured values ​​detected by the air quality sensor 7.

[0055] In this embodiment, we will describe a case in which the control unit 603 controls the ventilation device 2 based on the measured value detected by the air quality sensor 7. In this embodiment, we will also describe a case in which the measured value detected by the air quality sensor 7 is the CO2 concentration CM of the air-conditioned ventilation space S.

[0056] The control unit 603 controls the ventilation device 2 to satisfy predetermined conditions regarding the CO2 concentration CM. The specified condition is, for example, that the following equation (1) is satisfied. CM <TH1 (1) The first threshold TH1 corresponds to the upper limit of the CO2 concentration CM. In other words, the control unit 603 controls the ventilation device 2 so that the CO2 concentration CM is less than the first threshold TH1. The first threshold TH1 is set, for example, when the air conditioning and ventilation system 100 is installed, based on various measurement results, etc.

[0057] The control unit 603 switches the ventilation airflow of the ventilation device 2 to high airflow when the CO2 concentration CM is equal to or greater than the first threshold TH1. Subsequently, when the CO2 concentration CM falls below the second threshold TH2, the control unit 603 switches the ventilation airflow of the ventilation device 2 to low airflow. The second threshold TH2 is smaller than the first threshold TH1. The second threshold TH2 is set, for example, when the air conditioning and ventilation system 100 is installed, based on various measurement results, etc. The processing of the control unit 603 will be further explained with reference to Figure 3.

[0058] The monitoring unit 604 monitors the control operation of the control unit 603. The monitoring unit 604 monitors at least one of the number of times and the duration of the control unit 603 executing a predetermined control within a predetermined monitoring period. "Within the prescribed monitoring period" refers, for example, to the working hours of a business person P in an office corresponding to the air-conditioned and ventilated space S. Working hours are, for example, from 9:00 to 18:00 on weekdays. "Predetermined control" refers, for example, to a control that operates the ventilation device 2 at a high airflow rate.

[0059] In other words, in this embodiment, the monitoring unit 604 monitors at least one of the number of times N and the duration during which the control unit 603 controls the ventilation device 2 to operate with a high airflow rate. In the following explanation, the monitoring unit 604 monitors the number of times N that the control unit 603 has controlled the ventilation device 2 to operate at a high airflow rate during working hours. The number N is, for example, the number of times per day.

[0060] The monitoring unit 604 determines whether the number of counts N has deviated from a predetermined range. The monitoring unit 604 determines whether the number of counts N has deviated from a predetermined range based, for example, on whether the following equation (2) is satisfied. THL≦N≦THH (2) The lower threshold THL is the lower threshold for number N operations, and the upper threshold THH is the upper threshold for number N operations. The "predetermined range" refers, for example, to a range that is greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH. The monitoring unit 604 determines that the number of counts N has deviated from a predetermined range if the number of counts N is less than the lower threshold THL, or if the number of counts N is greater than the upper threshold THH.

[0061] The monitoring unit 604 notifies that the installation environment of the ventilation device 2 may have changed if the number of cycles N deviates from a predetermined range. When the number of cycles N deviates from a predetermined range, the monitoring unit 604 notifies, for example, the user's smartphone, that the installation environment of the ventilation device 2 may have changed. The user is, for example, the maintenance manager of the air conditioning and ventilation system 100. "A change in the installation environment" of ventilation device 2 includes, for example, an increase or decrease in the number of business people P working in the office corresponding to the air-conditioned ventilation space S.

[0062] The monitoring unit 604 analyzes the factors causing the number of cycles N to deviate from a predetermined range, and based on the analysis results, notifies the user, for example, via their smartphone, whether or not the installation environment of the ventilation device 2 has changed. The user is, for example, the maintenance manager of the air conditioning and ventilation system 100. The "analysis of factors" will be explained further with reference to Figure 4. Furthermore, the monitoring unit 604 will be explained in more detail with reference to Figures 3 and 4.

[0063] The monitoring unit 604 determines whether the number of cycles N has deviated from a predetermined range, taking into account the operating status of the air-conditioned ventilation space S in which the ventilation device 2 is located. The "operating status" of the air-conditioned and ventilated space S refers, for example, to whether or not a business person P working in the office corresponding to the air-conditioned and ventilated space S is within working hours. The monitoring unit 604, for example, determines whether the number of times N per day during working hours for a business person P working in an office corresponding to an air-conditioned ventilation space S has deviated from a predetermined range.

[0064] The threshold setting unit 605 sets the lower threshold THL and the upper threshold THH based on the results of operating the ventilation device 2 for a predetermined period of time. The threshold setting unit 605 calculates, for example, the average value A and standard deviation σ of the number of times N per day over a predetermined period. Then, the threshold setting unit 605 sets the lower threshold THL and the upper threshold THH based on the average value A and standard deviation σ of the number of times N per day. The "specified period" is, for example, three months. The "specified period" may also be, for example, six months. The longer the "specified period," the more appropriate the lower threshold THL and upper threshold THH can be set to.

[0065] The threshold setting unit 605 sets the lower threshold THL and the upper threshold THH by, for example, the following equations (3) and (4). THL = AK × σ (3) THH = A + K × σ (4) The constant K is, for example, a constant between 1 and 3. For example, the constant K is "3".

[0066] [2. Server device processing] Next, the operation of each part of the air conditioning and ventilation system 100 will be explained. Figures 3 and 4 are flowcharts showing the processing of the server control device 60 of the server device 6. For convenience, the flowcharts shown in Figures 3 and 4 describe the case where the threshold setting unit 605 has pre-set the lower threshold THL and the upper threshold THH.

[0067] First, as shown in Figure 3, in step S101, the monitoring unit 604 determines whether or not working hours have started. For example, if working hours are from 9:00 to 18:00 on weekdays, the monitoring unit 604 determines whether or not it is 9:00 on a weekday. If the monitoring unit 604 determines that the workday has not started (step S101; NO), the process enters a waiting state. If the monitoring unit 604 determines that the workday has started (step S101; YES), the process proceeds to step S103.

[0068] Then, in step S103, the monitoring unit 604 sets the count N to "0". The count N is the number of times the ventilation device 2 has operated with a ventilation airflow at high speed. Next, in step S105, the control unit 603 instructs the ventilation device 2 to operate at a low ventilation airflow rate. Next, in step S107, the control unit 603 obtains the CO2 concentration CM from the air quality sensor 7.

[0069] Next, in step S109, the control unit 603 determines whether the CO2 concentration CM is equal to or greater than the first threshold TH1. If the control unit 603 determines that the CO2 concentration CM is equal to or greater than the first threshold TH1 (step S109; YES), the process proceeds to step S113. If the control unit 603 determines that the CO2 concentration CM is not equal to or greater than the first threshold TH1 (step S109; NO), the process proceeds to step S111.

[0070] Then, in step S111, the monitoring unit 604 determines whether or not the working hours have ended. For example, if the working hours are from 9:00 to 18:00 on weekdays, the monitoring unit 604 determines whether or not it is 18:00 on a weekday. If the monitoring unit 604 determines that the working hours have not ended (step S111; NO), the process returns to step S107. If the monitoring unit 604 determines that the working hours have ended (step S111; YES), the process proceeds to step S127 in Figure 4.

[0071] If the answer in step S109 is YES, then in step S113, the control unit 603 instructs the ventilation device 2 to operate at a high airflow rate. Next, in step S115, the monitoring unit 604 increments the count N by "1". Next, in step S117, the control unit 603 obtains the CO2 concentration CM from the air quality sensor 7.

[0072] Next, in step S119, the control unit 603 determines whether the CO2 concentration CM is less than or equal to the second threshold TH2. If the control unit 603 determines that the CO2 concentration CM is below the second threshold TH2 (step S119; YES), the process proceeds to step S123. If the control unit 603 determines that the CO2 concentration CM is not below the second threshold TH2 (step S119; NO), the process proceeds to step S121.

[0073] Then, in step S121, the monitoring unit 604 determines whether or not the working hours have ended. If the monitoring unit 604 determines that the working hours have not ended (step S121; NO), the process returns to step S117. If the monitoring unit 604 determines that the working hours have ended (step S121; YES), the process proceeds to step S127 in Figure 4.

[0074] If the answer in step S119 is YES, then in step S123, the control unit 603 instructs the ventilation device 2 to operate at a low ventilation airflow rate. Next, in step S125, the monitoring unit 604 determines whether or not the working hours have ended. If the monitoring unit 604 determines that the working hours have not ended (step S125; NO), the process returns to step S107. If the monitoring unit 604 determines that the working hours have ended (step S125; YES), the process proceeds to step S127 in Figure 4.

[0075] Next, as shown in Figure 4, in step S127, the control unit 603 instructs the ventilation device 2 to stop operation. Next, in step S129, the monitoring unit 604 determines whether the number of times N is greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH. If the monitoring unit 604 determines that the number of operations N is greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH (step S129; YES), the process returns to step S101 in Figure 3. If the monitoring unit 604 determines that the number of operations N is not greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH (step S129; NO), the process proceeds to step S131.

[0076] Then, in step S131, the monitoring unit 604 determines whether a malfunction has occurred in at least one of the ventilation device 2 and the air quality sensor 7. Note that if a malfunction occurs in either the ventilation device 2 or the air quality sensor 7, the monitoring unit 604 transmits malfunction information to the server device 6 indicating that a malfunction has occurred. Based on the malfunction information, the monitoring unit 604 determines whether a malfunction has occurred in at least one of the ventilation device 2 or the air quality sensor 7. The process in step S131 corresponds to an example of "factor analysis".

[0077] If the monitoring unit 604 determines that a malfunction has occurred in at least one of the ventilation device 2 and the air quality sensor 7 (step S131; YES), the process proceeds to step S133. Then, in step S133, the monitoring unit 604 notifies the user's smartphone that a malfunction has occurred in at least one of the ventilation device 2 and the air quality sensor 7. After that, the process returns to step S101 in Figure 3. The user is, for example, the maintenance manager of the air conditioning and ventilation system 100.

[0078] If the monitoring unit 604 determines that no malfunction has occurred in the ventilation device 2 or the air quality sensor 7 (step S131; NO), the process proceeds to step S135. Then, in step S135, the monitoring unit 604 determines whether the reason why the number N was determined in step S131 to be greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH is due to a change caused by the equipment. The process in step S135 corresponds to an example of "factor analysis".

[0079] "Changes caused by equipment" include, for example, a change in the installation location of the air quality sensor 7. If the installation location of the air quality sensor 7 is changed, for example, to a location where business person P is not present, the CO2 concentration CM detected by the air quality sensor 7 will be lower than the CO2 concentration CM at the location where business person P is present. As a result, the number of occurrences N may fall below the lower threshold THL. In this case, the ventilation system 2 cannot be properly controlled based on the detection results of the air quality sensor 7, so the CO2 concentration CM at the location where business person P is present may be above the first threshold TH1.

[0080] Furthermore, "equipment-related changes" include, for example, changes in the layout of furniture such as desks and bookshelves placed in the air-conditioned ventilation space S. If, as a result of the layout change, a bookshelf is placed between the installation location of the air quality sensor 7 and the location where business person P is present, the CO2 concentration CM detected by the air quality sensor 7 will be lower than the CO2 concentration CM at the location where business person P is present. As a result, the number of occurrences N may fall below the lower threshold THL. In this case, the ventilation system 2 cannot be properly controlled based on the detection results of the air quality sensor 7, so the CO2 concentration CM at the location where business person P is present may be above the first threshold TH1.

[0081] Furthermore, "changes caused by equipment" include, for example, the change of at least one of the windows and doors of a room located inside building H from a closed state to an open state, or from an open state to a closed state. When at least one of the room's windows and doors is changed from a closed state to an open state, the air in the air-conditioned ventilation space S is ventilated by at least one of the windows and doors. As a result, the CO2 concentration CM detected by the air quality sensor 7 may fall below, for example, the first threshold TH1. In this case, it is preferable to change the ventilation device 2 to a type that consumes less power. If at least one of the room's windows and doors is changed from an open state to a closed state, the air in the air-conditioned ventilation space S will no longer be ventilated by at least one of the windows and doors. As a result, even if the ventilation device 2 is operated at a high airflow rate, the CO2 concentration CM may not fall below the second threshold TH2. In this case, it is preferable to change the ventilation device 2 to a type with a higher ventilation capacity.

[0082] The determination of whether or not the change is equipment-related in step S135 can be made by comparing the temperature diffusion pattern in the initial period after the installation of the air conditioning and ventilation system 100 with the temperature diffusion pattern when step S135 is performed. The "temperature diffusion pattern" is, for example, a pattern showing the change in temperature of the indoor sensor 8 when the air conditioning unit 3 is in cooling or heating operation.

[0083] Furthermore, the determination of whether or not the change is equipment-related in step S135 can be made by comparing the CO2 diffusion pattern in the initial period after the installation of the air conditioning and ventilation system 100 with the CO2 diffusion pattern when step S135 is performed. The "CO2 diffusion pattern" is, for example, a pattern showing the change in CO2 concentration CM detected by the air quality sensor 7 when the ventilation device 2 is operated at a high airflow rate.

[0084] If the monitoring unit 604 determines in step S129 that the reason why the number of occurrences N is not greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH is due to a change caused by the equipment (step S135; YES), the process proceeds to step S137. Then, in step S137, the monitoring unit 604 notifies the user's smartphone that an on-site inspection of the location where the air conditioning and ventilation system 100 is installed is necessary. After that, the process returns to step S101 in Figure 3. The user is, for example, the maintenance manager of the air conditioning and ventilation system 100.

[0085] If the monitoring unit 604 determines in step S129 that the reason why the number of occurrences N is not greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH is not due to an equipment-related change (step S135; NO), the process proceeds to step S139. Then, in step S139, the monitoring unit 604 notifies the user's smartphone that an environmental change not caused by the equipment has occurred. After that, the process returns to step S101 in Figure 3. The user is, for example, the maintenance manager of the air conditioning and ventilation system 100.

[0086] Steps S107, S109, and S113 correspond to an example of a "control step". Also, steps S117, S119, and S123 correspond to an example of a "control step". Steps S129, S131, and S135 correspond to an example of a “monitoring step”. Steps S133, S137, and S139 correspond to an example of a "notification step".

[0087] In Figures 3 and 4, the monitoring unit 604 performs the determinations in steps S131 and S135 when it determines that the number of steps N is not greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH (step S129; NO), but the embodiments are not limited to these. If the monitoring unit 604 determines that the number of occurrences N is not greater than or equal to the lower threshold THL and less than or equal to the upper threshold THH (step S129; NO), the monitoring unit 604 may notify the user's smartphone that there is a possibility that a change in the installation environment has occurred.

[0088] [3. Effects, etc.] As described above, the air conditioning and ventilation system 100 comprises a ventilation device 2, at least one air quality sensor 7, a control unit 603 that controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7, and a monitoring unit 604 that monitors the control operation of the control unit 603. The control unit 603 controls the ventilation device 2 so that the CO2 concentration CM is less than a first threshold TH1. The monitoring unit 604 monitors the number of times N that the control unit 603 controls the ventilation device 2 to operate at a high airflow rate during the working hours of business person P in the office where the air quality sensor 7 and the ventilation device 2 are installed, and notifies that the installation environment of the ventilation device 2 may have changed if the number of times N deviates from a predetermined range.

[0089] With this configuration, if the number of times N the ventilation device 2 is controlled to operate at a high airflow rate deviates from a predetermined range, a notification is issued indicating that the installation environment of the ventilation device 2 may have changed. Therefore, the system can properly notify the user that the installation environment of the ventilation device 2 may have changed. Consequently, the user can confirm that the installation environment of the ventilation device 2 may have changed.

[0090] In the air conditioning and ventilation system 100, the monitoring unit 604 analyzes the factors causing the frequency N to deviate from a predetermined range, and based on the analysis results, notifies whether or not the installation environment of the ventilation device 2 has changed.

[0091] This configuration allows for the analysis of factors causing the number of cycles N to deviate from the predetermined range, and based on the analysis results, it notifies whether or not the installation environment of the ventilation device 2 has changed. Therefore, it is possible to properly notify whether or not the installation environment of the ventilation device 2 has changed. Consequently, the user can confirm whether or not the installation environment of the ventilation device 2 has changed.

[0092] In the air conditioning and ventilation system 100, the monitoring unit 604 determines whether the number of times N deviates from the predetermined range, taking into consideration whether the business person P working in the office corresponding to the air-conditioned ventilation space S where the air quality sensor 7 and the ventilation device 2 are located is within working hours.

[0093] According to this configuration, the determination of whether the number of occurrences N deviates from the predetermined range is made by considering whether the business person P working in the office corresponding to the air-conditioned ventilation space S is within working hours. Therefore, the determination of whether the number of occurrences N deviates from the predetermined range can be made appropriately.

[0094] In the air conditioning and ventilation system 100, the monitoring means includes a threshold setting unit 605 that determines whether the number of cycles N deviates from the predetermined range based on a lower threshold THL and an upper threshold THH, and sets the lower threshold THL and the upper threshold THH based on the results of operating the ventilation device 2 for a predetermined period.

[0095] With this configuration, the lower threshold THL and upper threshold THH are set based on the results of operating the ventilation device 2 for a predetermined period. By setting the predetermined period to an appropriate period, the lower threshold THL and upper threshold THH can be set to appropriate values. Therefore, it is possible to properly determine whether the number of cycles N has deviated from the predetermined range.

[0096] The control method for the air conditioning and ventilation system 100 comprises a ventilation device 2, at least one air quality sensor 7, and a server device 6 that controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7. The control method for the air conditioning and ventilation system 100 includes: a control step in which the server device 6 controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7; a monitoring step in which the control unit 603 monitors the number of times N in which it controls the ventilation device 2 to operate at a high airflow rate during the working hours of business person P in the office where the air quality sensor 7 and the ventilation device 2 are located; and a notification step in which the control unit 603 notifies that the installation environment of the ventilation device 2 may have changed if the number of times N deviates from a predetermined range.

[0097] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0098] The server device 6 comprises a control unit 603 that controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7, and a monitoring unit 604 that monitors the control operation of the control unit 603. The control unit 603 controls the ventilation device 2 so that the CO2 concentration CM is less than a first threshold TH1. The monitoring unit 604 monitors the number of times N that the control unit 603 controls the ventilation device 2 to operate at a high airflow rate during the working hours of business person P in the office where the air quality sensor 7 and the ventilation device 2 are installed. If the number N deviates from a predetermined range, the monitoring unit 604 notifies that the installation environment of the ventilation device 2 may have changed.

[0099] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0100] The control program 606 causes the server processor 60B to perform the following steps: a control step to control the ventilation device 2 so that the CO2 concentration CM detected by the air quality sensor 7 is less than a first threshold TH1; a monitoring step to monitor the number of times N that the control unit 603 has controlled the ventilation device 2 to operate at a high airflow rate during the working hours of business person P in the office where the air quality sensor 7 and the ventilation device 2 are located; and a notification step to notify the server processor 60B that the installation environment of the ventilation device 2 may have changed if the number of times N deviates from a predetermined range.

[0101] This configuration produces the same effects as the air conditioning and ventilation system 100 described above.

[0102] (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.

[0103] In the embodiment described above, an example was shown in which the air conditioning and ventilation system 100 comprises an air conditioning device 3 having a ventilation function and a ventilation device 2. However, the air conditioning and ventilation system 100 only needs to include at least one of the air conditioning device 3 having a ventilation function and the ventilation device 2.

[0104] In the embodiment described above, an example was given in which the server device 6 comprises a control unit 603 and a monitoring unit 604. However, a so-called "information processing device" may also comprise the control unit 603 and the monitoring unit 604. The "information processing device" includes personal computers, smartphones, tablet computers, and the like.

[0105] 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. 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.

[0106] 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.

[0107] In the embodiment described above, an example was given in which the control unit 603 controls the ventilation device 2 based on the CO2 concentration CM detected by the air quality sensor 7. However, the control unit 603 of this disclosure may also control the ventilation function of the air conditioning device 3 based on the CO2 concentration CM detected by the air quality sensor 7. Furthermore, the control unit 603 of this disclosure may also control the ventilation functions of both the ventilation device 2 and the air conditioning device 3 based on the CO2 concentration CM detected by the air quality sensor 7.

[0108] In the embodiment described above, the monitoring unit 604 is shown as monitoring the number of times N the control unit 603 controls the ventilation device 2 to operate at a high airflow rate during working hours. However, the monitoring unit 604 of this disclosure may also monitor the time during which the control unit 603 controls the ventilation device 2 to operate at a high airflow rate. Furthermore, the monitoring unit 604 of this disclosure may also monitor both the number of times N the control unit 603 controls the ventilation device 2 to operate at a high airflow rate and the time during which this control unit 604 controls the ventilation device 2.

[0109] In the embodiment described above, the "predetermined control" is exemplified as a control that operates the ventilation device 2 at a high airflow rate. However, the "predetermined control" may also be a control that operates the ventilation function of the air conditioning device 3 at a high airflow rate. Alternatively, the "predetermined control" may be a control that operates the ventilation device 2 at a high airflow rate and also operates the ventilation function of the air conditioning device 3 at a high airflow rate.

[0110] In the embodiment described above, the "predetermined monitoring period" was exemplified as being within the working hours of business persons P in the office corresponding to the air-conditioned ventilation space S. However, the "predetermined monitoring period" can be any period during which the "predetermined control" is likely to be performed. For example, the "predetermined monitoring period" may be any period during which the number of business persons P in the office corresponding to the air-conditioned ventilation space S is greater than or equal to a predetermined number.

[0111] In the embodiment described above, we have illustrated the case where the ventilation device 2 can switch between two types of ventilation airflow: "low wind" and "high wind." However, the ventilation device 2 may have three or more types of ventilation airflow.

[0112] 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).

[0113] The configuration of the indoor unit 1, ventilation device 2, and server device 6 shown in Figure 2 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 conversely, some of the functions realized by hardware may be implemented as software.

[0114] The operational step units shown in Figures 3 and 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 impede the intent of this disclosure.

[0115] 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.

[0116] (Note) Based on the above description of embodiments, the following technologies are disclosed.

[0117] (Technology 1) An air conditioning and ventilation system comprising: at least one of an air conditioning device having a ventilation function and a ventilation device; at least one air quality sensor; a control unit that controls the air conditioning device and the ventilation device based on a measurement value detected by the air quality sensor; and a monitoring unit that monitors the control operation of the control unit, wherein the control unit controls the air conditioning device and the ventilation device to satisfy predetermined conditions relating to the measurement value; the monitoring unit monitors at least one of the number of times and the time during which the control unit performs predetermined control within a predetermined monitoring period; and notifies that the installation environment of at least one of the air conditioning device and the ventilation device may have changed if at least one of the number of times and the time deviates from a predetermined range. According to this, it is possible to properly notify the user that the installation environment of at least one of the air conditioning system and the ventilation system may have changed. Therefore, the user can confirm that the installation environment of at least one of the air conditioning system and the ventilation system may have changed.

[0118] (Technical 2) The air conditioning and ventilation system according to Technical 1, wherein the monitoring unit analyzes the factors causing the number of times and the time to deviate from a predetermined range when at least one of the number of times and the time deviates from a predetermined range, and based on the results of the analysis, notifies whether or not the installation environment of at least one of the air conditioning device and the ventilation device has changed. According to this, it is possible to properly notify whether or not the installation environment of at least one of the air conditioning system and the ventilation system has changed. Therefore, the user can confirm whether or not the installation environment of at least one of the air conditioning system and the ventilation system has changed.

[0119] (Technical 3) The air conditioning and ventilation system according to Technical 1 or Technical 2, wherein the monitoring unit determines whether the number of times or the time deviates from the predetermined range, taking into consideration the operating status of the target space in which the air quality sensor and at least one of the air conditioning device and the ventilation device are located. According to this, it is possible to properly determine whether the number of times or the time deviates from the predetermined range.

[0120] (Technology 4) An air conditioning and ventilation system according to any one of Technology 1 to Technology 3, wherein the monitoring means includes a threshold setting unit that determines whether the number of times or the time deviates from the predetermined range based on a lower threshold and an upper threshold, and sets the lower threshold and the upper threshold based on the result of operating at least one of the air conditioning device and the ventilation device for a predetermined period of time. According to this, by setting the predetermined period to an appropriate period, the lower and upper threshold values ​​can be set to appropriate values. Therefore, it is possible to properly determine whether the number of occurrences or the time deviates from the predetermined range.

[0121] (Technical 5) A control method for an air conditioning and ventilation system comprising: an air conditioning device having a ventilation function and at least one of a ventilation device; at least one air quality sensor; and a control device that controls the air conditioning device and at least one of the ventilation device based on a measurement value detected by the air quality sensor, the control method comprising: a control step in which the control device controls the air conditioning device and at least one of the ventilation device so as to satisfy predetermined conditions relating to the measurement value; a monitoring step in which the control device monitors at least one of the number of times and time in which the control step has performed predetermined control within a predetermined monitoring period; and a notification step in which, if at least one of the number of times and time deviates from a predetermined range, the control device notifies that the installation environment of at least one of the air conditioning device and the ventilation device may have changed. According to this, it will produce the same effect as the air conditioning and ventilation system described in Technology 1.

[0122] (Technical 6) A control device comprising: a control unit that controls at least one of an air conditioning system having a ventilation function and a ventilation system based on measured values ​​detected by an air quality sensor; and a monitoring unit that monitors the control operation of the control unit, wherein the control unit controls at least one of the air conditioning system and the ventilation system to satisfy predetermined conditions relating to the measured values; and the monitoring unit monitors at least one of the number of times and the time during which the control unit performs predetermined control within a predetermined monitoring period, and notifies that the installation environment of at least one of the air conditioning system and the ventilation system may have changed if at least one of the number of times and the time deviates from a predetermined range. According to this, it will produce the same effect as the air conditioning and ventilation system described in Technology 1.

[0123] (Technical 7) A program that causes a processor in a control device to execute a control step that controls at least one of an air conditioning system having a ventilation function and a ventilation device so as to satisfy predetermined conditions related to the measured values ​​detected by an air quality sensor; a monitoring step that monitors at least one of the number of times and the time during which the control step performs predetermined control within a predetermined monitoring period; and a notification step that notifies that the installation environment of at least one of the air conditioning system and the ventilation device may have changed if at least one of the number of times and the time deviates from 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]

[0124] As described above, the air conditioning and ventilation system, control method for the air conditioning and ventilation system, control device, and program related to this disclosure can be used to notify whether or not the installation environment of at least one of the air conditioning device and the ventilation device has changed. [Explanation of Symbols]

[0125] 100 Air conditioning and ventilation systems 1 Indoor unit 2. Ventilation system 3. Air conditioning system 6. Server device (control device) 7. Air quality sensor 60A Server Memory 60B Server Processor (Processor) 601 Server Communication Control Unit 602 Storage Unit 603 Control Unit 604 Monitoring Department 605 Threshold setting section 606 Control Program (Program) CM CO2 concentration N times S Air-conditioned and ventilated space S107, S109, S113, S117, S119, S123 Steps (Control Steps) Steps S129, S131, and S135 (monitoring steps) S133, S137, S139 Step (Notification Step) TH1 First threshold TH2 Second threshold THH upper threshold THL Lower Threshold

Claims

1. An air conditioning system having a ventilation function, and at least one of the ventilation system, At least one air quality sensor, A control unit controls at least one of the air conditioning system and the ventilation system based on the measured values ​​detected by the air quality sensor. A monitoring unit that monitors the control operation of the control unit, An air conditioning and ventilation system equipped with, The control unit controls at least one of the air conditioning system and the ventilation system to satisfy predetermined conditions relating to the measured values. The monitoring unit monitors at least one of the number of times and the duration for which the control unit performs a predetermined control within a predetermined monitoring period, and notifies that if at least one of the number of times and the duration deviates from a predetermined range, there is a possibility that the installation environment of at least one of the air conditioning system and the ventilation system has changed. Air conditioning and ventilation system.

2. The monitoring unit, when at least one of the number of times and the time deviates from a predetermined range, analyzes the factors causing the number of times and the time to deviate from the predetermined range, and based on the results of the analysis, notifies whether or not the installation environment of at least one of the air conditioning system and the ventilation system has changed. The air conditioning and ventilation system according to claim 1.

3. The monitoring unit determines whether the number of times or the time deviates from the predetermined range, taking into consideration the operating status of the target space where the air quality sensor and at least one of the air conditioning device and the ventilation device are located. The air conditioning and ventilation system according to claim 1.

4. The monitoring unit determines, based on the lower threshold and the upper threshold, whether the number of times or the time deviates from the predetermined range. The system includes a threshold setting unit that sets the lower threshold and the upper threshold based on the results of operating at least one of the air conditioning system and the ventilation system for a predetermined period of time. An air conditioning and ventilation system according to any one of claims 1 to 3.

5. An air conditioning system having a ventilation function, and at least one of the ventilation system, At least one air quality sensor, A control device that controls at least one of the air conditioning system and the ventilation system based on the measured values ​​detected by the air quality sensor, A control method for an air conditioning and ventilation system comprising: The control device, A control step to control at least one of the air conditioning device and the ventilation device so as to satisfy predetermined conditions relating to the measured values, A monitoring step that monitors at least one of the number of times and the duration during which the control step performs a predetermined control within a predetermined monitoring period, A notification step in which, if at least one of the aforementioned number of times and the aforementioned time deviates from a predetermined range, the system notifies that the installation environment of at least one of the air conditioning system and the ventilation system may have changed. A method for controlling an air conditioning and ventilation system.

6. Based on the measured values ​​detected by the air quality sensor, an air conditioning system having a ventilation function and a control unit that controls at least one of the ventilation system, A monitoring unit that monitors the control operation of the control unit, A control device comprising, The control unit controls at least one of the air conditioning system and the ventilation system to satisfy predetermined conditions relating to the measured values. The monitoring unit monitors at least one of the number of times and the duration for which the control unit performs a predetermined control within a predetermined monitoring period, and notifies that if at least one of the number of times and the duration deviates from a predetermined range, there is a possibility that the installation environment of at least one of the air conditioning system and the ventilation system has changed. Control device.

7. The processor in the control unit A control step that controls at least one of an air conditioning system having a ventilation function and a ventilation device, based on the measured value detected by the air quality sensor, so as to satisfy predetermined conditions related to the measured value. A monitoring step that monitors at least one of the number of times and the duration during which the control step performs a predetermined control within a predetermined monitoring period, A notification step in which, if at least one of the aforementioned number of times and the aforementioned time deviates from a predetermined range, the system notifies that the installation environment of at least one of the air conditioning system and the ventilation system may have changed. A program that executes something.

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