Air conditioning ventilation system, method for controlling the air conditioning ventilation system, and program

Abstract

To provide an air conditioning ventilation system appropriately setting an operation mode of a ventilation device by changing condition to be used depending on the case where an operation mode of the ventilation device has priority in comfortability and the case where it has priority in energy conservation.SOLUTION: In an air conditioning ventilation system 1, a server processor 43 (control device) acquires each of a room temperature, an indoor humidity and an indoor enthalpy by an indoor air quality sensor 30, an outdoor temperature, an outdoor humidity and an outdoor enthalpy by an outdoor air quality sensor, a set temperature, and a target humidity of an indoor unit 11. The server processor 43 sets a ventilation mode on the basis of the indoor temperature, the outdoor temperature and the set temperature when operating the ventilation device 20 in the comfort-prior mode, and sets the ventilation mode on the basis of the indoor enthalpy and the outdoor enthalpy when operating the ventilation device 20 in an energy consumption-prior mode.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] Patent Document 1 discloses a technology that saves energy by switching the ventilation mode of the ventilation device from "heat exchange ventilation" to "normal ventilation" and stopping the air conditioning when the indoor temperature during cooling is higher than the set temperature and also higher than the outside air temperature. Patent Document 2 discloses a technology that performs ventilation operation that is both comfortable and energy-efficient by comparing indoor enthalpy, outdoor enthalpy, and target enthalpy and changing the ventilation mode so as to reduce the air conditioning load due to ventilation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-117084 A [Patent Document 2] JP 2015-206570 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an air conditioning and ventilation system that can set an appropriate operation mode for the ventilation device by changing the conditions for changing the ventilation mode used when comfort is prioritized and when energy conservation is prioritized, and a control method and control program for the air conditioning and ventilation system. [Means for solving the problem]

[0005] The air conditioning and ventilation system of the present disclosure is an air conditioning and ventilation system comprising a ventilation device and an air conditioning indoor unit installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity, and a control device that issues control instructions to the ventilation device and the indoor unit, wherein the control device acquires the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, and when the ventilation device is operated in comfort priority mode, sets the ventilation mode based on the indoor temperature, outdoor temperature, and set temperature, and when the ventilation device is operated in energy saving priority mode, sets the ventilation mode based on the indoor enthalpy and outdoor enthalpy.

[0006] In addition, the control method for an air conditioning and ventilation system in the present disclosure is a control method for an air conditioning and ventilation system including a ventilation device and an air conditioning indoor unit installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity, and a control device that issues control instructions to the ventilation device and the indoor unit, wherein the control device performs the following processes: acquires the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, and when the ventilation device is operated in a comfort priority mode, sets the ventilation mode based on the indoor temperature, outdoor temperature, and set temperature; and when the ventilation device is operated in an energy saving priority mode, sets the ventilation mode based on the indoor enthalpy and outdoor enthalpy.

[0007] In addition, the program of the present disclosure causes a processor of a control device provided in an air conditioning and ventilation system that includes a ventilation device and an air conditioning indoor unit installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, and an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity to execute the steps of acquiring the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, when the ventilation device is operated in a comfort priority mode, setting a ventilation mode based on the indoor temperature, outdoor temperature, and set temperature, and when the ventilation device is operated in an energy saving priority mode, setting the ventilation mode based on the indoor enthalpy and outdoor enthalpy. Effect of the Invention

[0008] The air conditioning and ventilation system, and the control method and program for the air conditioning and ventilation system disclosed herein are capable of setting an appropriate operation mode for the ventilation device in an environment where multiple indoor units and ventilation devices are installed, by changing the conditions for changing the ventilation mode used when comfort is prioritized and when energy conservation is prioritized. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing a configuration of an air conditioning and ventilation system according to a first embodiment. [Diagram 2] A block diagram showing a control configuration of an air conditioning and ventilation system according to a first embodiment. [Diagram 3] Flowchart showing the operation of the air conditioning ventilation system in the first embodiment [Figure 4] Table showing conditions for determining the ventilation mode in the comfort priority mode in the first embodiment. [Diagram 5] Table showing conditions for determining the ventilation mode in the energy saving priority mode in the first embodiment. [Figure 6] Table showing conditions for determining a ventilation mode in the second embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (The knowledge and other information that formed the basis of this disclosure) At the time when the inventors came up with the idea of ​​the present disclosure, there was a technology that aimed to achieve comfort and energy saving by coordinating an air conditioner and a ventilation device based on temperature and enthalpy. However, when choosing between ventilation for comfort and ventilation for energy conservation, even if the temperature and humidity conditions are the same, the operating mode selected may differ depending on whether the ventilation mode is determined based on temperature or enthalpy. For example, in a conditioned and ventilated space where the set temperature of the air conditioning indoor unit is set to 25°C for cooling, if the indoor temperature is higher than the set temperature (e.g., 27°C) and the outdoor temperature is lower than the set temperature (e.g., 23°C), the "normal ventilation mode" will be selected when considering only temperature (comfort) (e.g., Patent Document 1). Even under the same temperature conditions, when the outdoor humidity is higher (e.g., 90%) than the indoor humidity (e.g., 40%), such as after a rain shower or during dense fog, the outdoor entropy (63.6 kJ / kg) may be greater than the indoor enthalpy (49.8 kJ / kg). Under such conditions, the "heat exchange ventilation mode" is selected when selecting a ventilation mode that takes enthalpy (energy saving) into consideration (e.g., Patent Document 2). In such conditions where there is a trade-off between comfort and energy efficiency, it is necessary to take into account the usage patterns and requests of users. In addition, in an environment where multiple air conditioners and ventilation devices are installed, the priority between comfort and energy saving changes depending on the date and time and the usage situation, but this is not taken into consideration in the conventional technology. Furthermore, in an environment where multiple air conditioners and ventilation devices are installed, the number of operating ventilation devices changes, so it is necessary to change the measurement range of temperature and enthalpy used to select the ventilation mode, but the inventors discovered a problem in that only the temperature and enthalpy of a predetermined location can be used in the conventional technology, and have come to constitute the subject of the present disclosure in order to solve this problem. The present disclosure provides an air conditioning and ventilation system that can set an appropriate operation mode for the ventilation device by changing the conditions for using the operation mode of the ventilation device depending on whether comfort is prioritized or energy conservation is prioritized, and a control method and control program for the air conditioning and ventilation system.

[0011] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0012] (Embodiment 1) [1-1. Configuration] [1-1-1. Configuration of air conditioning and ventilation system] FIG. 1 is a diagram showing the configuration of an air conditioning ventilation system according to the first embodiment. The air conditioning and ventilation system 1 is a system that performs air conditioning and ventilation of a conditioned and ventilated space 5 provided inside a building such as a residence or a facility.

[0013] The air conditioning and ventilation system 1 includes an air conditioner 10, a ventilation device 20, and a server device 40. In FIG. 1, only the indoor unit 11 of the air conditioner 10 is shown. The air conditioner 10 comprises an indoor unit 11 and an outdoor unit (not shown), and the indoor unit 11 conditions the conditioned ventilation space 5 by a refrigeration cycle formed by the indoor unit 11 and the outdoor unit. Although the indoor unit 11 in this embodiment is exemplified as a ceiling cassette type indoor unit 11, the indoor unit 11 may be of other types such as a wall mounted type or a ceiling suspended type. In this embodiment, three indoor units 11, a first indoor unit 11, a second indoor unit 11 and a third indoor unit 11, are installed as the indoor units 11.

[0014] The ventilation device 20 can be operated in two ventilation modes: a normal ventilation mode in which outdoor air is directly introduced into the conditioned ventilation space 5, and a heat exchange ventilation mode in which the outdoor air is heat exchanged with indoor air and introduced into the conditioned ventilation space 5. The ventilation device 20 of this embodiment is exemplified as a ceiling-embedded type device. In the present embodiment, three ventilation devices 20, namely, a first ventilation device 20, a second ventilation device 20, and a third ventilation device 20, are installed.

[0015] The air conditioning and ventilation system 1 is equipped with a plurality of indoor air quality sensors 30. The indoor air quality sensor 30 is a sensor that detects the state of the air quality in the conditioned and ventilated space 5, and the indoor air quality sensor 30 in this embodiment is a sensor that detects, for example, the indoor temperature and the indoor humidity. In this embodiment, six indoor air quality sensors 30, namely, a first indoor air quality sensor 30 to a sixth indoor air quality sensor 30, are installed.

[0016] The air conditioning and ventilation system 1 is equipped with an outdoor air quality sensor 31. The outdoor air quality sensor is a sensor that detects the outdoor temperature and outdoor humidity of the air that the ventilation device 20 supplies to the conditioned ventilation space 5.

[0017] The server device 40 is capable of communicating with the indoor unit 11, the ventilation device 20, the indoor air quality sensor, and the outdoor air quality sensor 31 via a router 50 and a network 51, respectively.

[0018] [1-1-2. Control configuration] Next, the control configuration of the air conditioning ventilation system 1 will be described. FIG. 2 is a block diagram showing the control configuration of the air conditioning ventilation system 1. The indoor unit 11 of the air conditioner 10 includes an indoor control device 12 and an indoor communication unit 13. The indoor control device 12 is a control device that controls each part of the indoor unit 11. The indoor control device 12 includes an indoor processor 14, which is a processor such as a CPU (Central Processing Unit), an indoor memory 15, and an interface circuit for connecting other devices and sensors.

[0019] The indoor memory 15 is a memory for storing programs and data. The indoor memory 15 stores a control program 16 and data to be processed by the indoor processor 14. The indoor memory 15 has a non-volatile storage area. The indoor memory 15 may also have a volatile storage area and configure a work area for the indoor processor 14. The indoor memory 15 is configured, for example, by a ROM (Read Only Memory) or a RAM (Random Access Memory).

[0020] The indoor communication unit 13 includes communication hardware such as a communication circuit, and communicates with the server device 40 under the control of the indoor control device 12. The communication standard of the indoor communication unit 13 may be a wireless communication standard or a wired communication standard. The indoor processor 14 controls each part of the indoor unit 11 by reading and executing a control program 16 .

[0021] The ventilation device 20 includes a ventilation control device 21 and a ventilation communication unit 22. The ventilation control device 21 is a control device that controls each part of the ventilation device 20. The ventilation control device 21 includes a ventilation processor 23, which is a processor such as a CPU, a ventilation memory 24, and an interface circuit for connecting other devices and sensors, and controls each part of the ventilation device 20.

[0022] The ventilation memory 24 is a memory that stores programs and data. The ventilation memory 24 stores the control program 25 and data to be processed by the ventilation processor 23. The ventilation memory 24 has a non-volatile storage area. The ventilation memory 24 may also have a volatile storage area and constitute a work area for the ventilation processor 23. The ventilation memory 24 is constituted by, for example, a ROM or a RAM.

[0023] The ventilation communication unit 22 includes communication hardware such as a communication circuit, and communicates with the server device 40 under the control of the ventilation control device 21. The communication standard of the ventilation communication unit 22 may be a wireless communication standard or a wired communication standard. The ventilation processor 23 reads and executes a control program 25 to control each part of the ventilation device 20 .

[0024] The server device 40 is a device that processes information with the indoor unit 11, the ventilation device 20, the indoor air quality sensor 30, and the outdoor air quality sensor 31 as clients. The server device 40 is connected to a network 51 and communicates with the indoor unit 11, the ventilation device 20, the indoor air quality sensor 30, and the outdoor air quality sensor 31 via a router 50. Note that in FIG. 2, the server device 40 is represented by one block, but this does not necessarily mean that the server device 40 is composed of a single device.

[0025] The server device 40 includes a server control device 41 and a server communication unit 42 . The server control device 41 is a control device that controls each part of the server device 40. The server control device 41 includes a server processor 43, which is a processor such as a CPU, a server memory 44, and an interface circuit for connecting other devices and sensors, and controls each part of the server device 40.

[0026] The server memory 44 is a memory for storing programs and data. The server memory 44 stores a control program 45, log data, and data to be processed by the server processor 43. The server memory 44 has a non-volatile storage area. The server memory 44 may also have a volatile storage area and configure a work area for the server processor 43. The server memory 44 is configured by, for example, a ROM or a RAM.

[0027] The server communication unit 42 includes communication hardware such as a communication circuit, and communicates with the air conditioners, the ventilators 20, the indoor air quality sensors 30, and the outdoor air quality sensors under the control of the server control device 41. The communication standard of the server communication unit 42 may be a wireless communication standard or a wired communication standard. The server processor 43 reads and executes the control program 45 to control each part of the server device 40 .

[0028] The server processor 43 associates each ventilation device 20 with the nearby indoor units 11 and the indoor air quality sensors 30 and registers them in advance in the server memory 44. In Fig. 1, three indoor units 11, a first indoor unit 11 to a third indoor unit 11, and three ventilation devices 20, a first ventilation device 20 to a third ventilation device 20, are installed. In addition, six indoor air quality sensors 30, a first indoor air quality sensor 30 to a sixth indoor air quality sensor 30, are installed.

[0029] For example, in the first ventilation device 20, a first indoor unit 11 and a second indoor unit 11 are registered, and a first indoor air quality sensor 30, a second indoor air quality sensor 30, and a third indoor air quality sensor 30 are registered. Moreover, in the second ventilation device 20, the second indoor unit 11 and the third indoor unit 11 are registered, and the third indoor air quality sensor 30 and the fourth indoor air quality sensor 30 are registered. In the third ventilation device 20, a third indoor unit 11 is registered, and a fourth indoor air quality sensor 30 and a fifth indoor air quality sensor 30 are registered.

[0030] The server processor 43 acquires the representative value Tr of the indoor temperature, the representative value Hr of the indoor humidity, and the indoor enthalpy Er from each indoor air quality sensor 30 and records them in the server memory 44. The server processor 43 acquires the representative value Ts of the set temperature by each indoor unit 11 and the indoor target humidity Hs, and records them in the server memory 44. Furthermore, the server processor 43 acquires the outdoor temperature To, the outdoor humidity Ho, and the outdoor enthalpy Eo from the outdoor air quality sensor, and records them in the server memory 44.

[0031] In addition, the server processor 43 records in the server memory 44 log data of the indoor units 11, such as the ON / OFF status, set temperature, air volume, and suction temperature of each indoor unit 11, and log data of the ventilation device 20, such as the ON / OFF status, air volume (weak, strong), and ventilation mode (heat exchange ventilation, normal ventilation).

[0032] The server processor 43 transmits an operation control signal for the ventilation device 20 to the ventilation device 20 in accordance with the operation mode. The operation modes include a comfort priority mode and an energy saving priority mode. The ventilation control device 21 of the ventilation device 20 controls the operation of the ventilation device 20 based on an operation control signal sent from the server device 40 by the server processor 43. The comfort priority mode is an operation mode in which, based on the indoor temperature and indoor humidity measured by the indoor air quality sensor 30, it is determined whether to operate in the normal ventilation mode or the heat exchange ventilation mode. The energy saving priority mode is a mode in which operation is performed based on the indoor temperature and indoor humidity from the indoor air quality sensor 30, the set temperature of the indoor unit 11, and the indoor enthalpy determined based on the target humidity.

[0033] Whether to operate in the comfort priority mode or the energy saving priority mode may be directly specified by the user using, for example, a remote control of the indoor unit 11. Alternatively, the server processor 43 may automatically determine the mode. The determination made by the server processor 43 may be, for example, based on the day of the week, the time, a power saving request, or the operating state of the air conditioning device. When making the determination based on the day of the week, for example, the energy saving priority mode is designated for holidays, and the comfort priority mode is designated for business days. In addition, when the judgment is made based on time, for example, the energy saving priority mode is designated during late night and early morning hours, and the comfort priority mode is designated during business hours. When the determination is based on a power saving request, for example, if there is a power saving request, the energy saving priority mode is designated, and if there is no power saving request, the comfort priority mode is designated. When making the determination based on the operating state of the air conditioner, for example, energy saving priority mode is specified when the air conditioner is operating, and comfort priority mode is specified when the air conditioner is stopped.

[0034] [1-2. Operation] Next, the operation of the air conditioning and ventilation system 1 will be described. FIG. 3 is a flowchart showing the operation of this embodiment. The server processor 43 identifies the ventilation devices 20 that are in operation based on the log data of the ventilation devices 20 (ST1). The server processor 43 acquires a representative value Tr of the indoor temperature, a representative value Hr of the indoor humidity, and an indoor enthalpy Er based on the detection values ​​of the indoor air quality sensor 30 registered in association with the ventilation device 20 in operation (ST2).

[0035] Next, the server processor 43 acquires the representative value Ts of the set temperature and the target humidity Hs of the room of the indoor unit 11 registered in association with the ventilation device 20 in operation (ST3). Furthermore, the server processor 43 acquires the outdoor temperature To, the outdoor humidity Ho, and the outdoor enthalpy Eo from the outdoor air quality sensor (ST4).

[0036] Next, the operation mode is designated as either a comfort priority mode or an energy saving priority mode (ST5). As described above, the operation mode may be designated by the user, or may be automatically determined by the server processor 43. If priority is given to comfort (ST6: YES), the server processor 43 determines the ventilation mode based on the temperature and humidity (ST7).

[0037] FIG. 4 is a table showing conditions for determining the ventilation mode in the comfort priority mode. As shown in FIG. 4, when the comfort priority mode is specified, the server processor 43 determines whether or not the following conditions are met based on the representative value Tr of the indoor temperature, the representative value Ts of the set temperature of the indoor unit 11, and the outdoor temperature To measured by the outdoor air quality sensor. (Tr>Ts) and (Tr>To).

[0038] Furthermore, the server processor 43 determines whether or not the following condition is met based on the representative value Hr of the indoor humidity, the indoor target humidity Hs of the indoor unit 11, and the outdoor humidity Ho measured by the outdoor air quality sensor. (Hr>Hs) and (Hr>Ho). When it is determined that the above-mentioned two conditions are satisfied in the temperature judgment and the humidity judgment, the server processor 43 determines that the ventilation mode is to be the normal ventilation mode. Moreover, when it is determined that neither of the above-mentioned two conditions is satisfied in the temperature judgment and the humidity judgment, the server processor 43 determines that the ventilation mode is to be the heat exchange ventilation mode.

[0039] If the temperature and humidity judgments do not correspond to either the normal ventilation mode or the heat exchange ventilation mode, the server processor 43 determines that judgment is impossible (ST8).

[0040] On the other hand, when comfort is not prioritized, that is, when the energy saving priority mode is specified (ST6: NO), the server processor 43 determines the ventilation mode based on enthalpy (ST9). If it is determined that the determination based on temperature and humidity is impossible (ST8: YES), the server processor 43 performs the ventilation mode determination based on enthalpy again, as in the case where comfort is not prioritized.

[0041] FIG. 5 is a table showing the conditions for determining the ventilation mode in the energy-saving priority mode. As shown in FIG. 5, the server processor 43 determines whether the following conditions are satisfied based on the indoor enthalpy Er by the indoor air quality sensor 30 and the outdoor enthalpy Eo by the outdoor air quality sensor. Eo - Er < TH. Eo - Er ≧ TH. Here, TH is a predetermined threshold value. Then, when the condition Eo - Er < TH is satisfied, the server processor 43 determines that the ventilation mode is performed in the normal ventilation mode. On the other hand, when the condition Eo - Er ≧ TH is satisfied, the server processor 43 determines that the ventilation mode is performed in the heat exchange ventilation mode.

[0042] [1-3. Effects, etc.] As described above, in the air conditioning and ventilation system 1, the server processor 43 (control device) acquires the indoor temperature, indoor humidity, and indoor enthalpy by the indoor air quality sensor 30, the outdoor temperature, outdoor humidity, outdoor enthalpy by the outdoor air quality sensor, the set temperature of the indoor unit 11, and the target humidity, respectively. When the server processor 43 operates the ventilation device 20 in the comfort priority mode, it sets the ventilation mode based on the indoor temperature, outdoor temperature, and set temperature. When the server processor 43 operates the ventilation device 20 in the energy-saving priority mode, it sets the ventilation mode based on the indoor enthalpy and outdoor enthalpy. Thereby, in an environment where a plurality of indoor units 11 and a ventilation device 20 are installed, by changing the conditions for using the ventilation device 20 when comfort is prioritized and when energy saving is prioritized, an appropriate operation mode of the ventilation device 20 can be set.

[0043] Furthermore, in this embodiment, when the server processor 43 (control device) operates in the comfort priority mode, if the representative value of the indoor temperature is greater than the representative value of the set temperature, and the representative value of the indoor temperature is greater than the outdoor temperature, and the representative value of the indoor humidity is greater than the target humidity, and the representative value of the indoor humidity is greater than the outdoor humidity, the ventilation device 20 is operated in the normal ventilation mode; if the representative value of the indoor temperature is less than the representative value of the set temperature or the representative value of the indoor temperature is less than the outdoor temperature, and further, the representative value of the indoor humidity is less than the target humidity or the representative value of the indoor humidity is less than the outdoor humidity, the ventilation device 20 is operated in the heat exchange ventilation mode; otherwise, it determines that judgment is not possible. As a result, when operating the ventilation device 20 in comfort priority mode in an environment where multiple indoor units 11 and ventilation devices 20 are installed, it is possible to appropriately set the ventilation mode to either normal ventilation mode or heat exchange ventilation mode.

[0044] In addition, in this embodiment, when the server processor 43 (control device) operates in energy saving priority mode or when it is determined that a judgment is not possible, if the difference between the indoor enthalpy and the outdoor enthalpy is smaller than a predetermined threshold value, the server processor 43 (control device) operates the ventilation device 20 in normal ventilation mode, and if the difference between the indoor enthalpy and the outdoor enthalpy is equal to or greater than a predetermined threshold value, the server processor 43 operates the ventilation device 20 in heat exchange ventilation mode. As a result, when the ventilation device 20 is operated in the energy saving priority mode, the ventilation device 20 can be operated appropriately based on the indoor enthalpy and the outdoor enthalpy.

[0045] In addition, in this embodiment, multiple ventilation devices 20, indoor units 11, and indoor air quality sensors 30 are provided, and the server processor 43 (control device) is provided with a server memory 44 (storage means) that registers, for each of the multiple ventilation devices 20, the indoor units 11 and indoor air quality sensors 30 installed nearby in association with each other, and the server processor 43 identifies the ventilation devices 20 that are in operation, and obtains the set temperature and target humidity set by the indoor units 11 corresponding to the ventilation devices 20 in operation, and the indoor temperature, indoor humidity, and indoor enthalpy set by the indoor air quality sensor 30, to determine the operation mode of the ventilation device 20. As a result, by obtaining the measurement ranges of temperature, humidity, and enthalpy used to select the ventilation mode from the indoor unit 11 and indoor air quality sensor 30 located in the vicinity of the operating ventilation device 20, it is possible to select a ventilation mode that more accurately reflects the indoor temperature and indoor humidity around the operating ventilation device 20.

[0046] In addition, in this embodiment, the server processor 43 (control device) determines whether to operate the ventilation device 20 in a comfort priority mode or an energy saving priority mode based on the operation day and operation time of the ventilation device 20 or the operating status of the indoor unit 11. This allows the server processor 43 to automatically determine whether to operate the ventilation device 20 in a comfort-priority mode or an energy-saving-priority mode.

[0047] (Embodiment 2) [2-1. Configuration] Next, a second embodiment of the present disclosure will be described. In the second embodiment, an example of control of the ventilation device 20 when the indoor unit 11 is in air blowing operation or is stopped will be described. The configuration and control configuration of the conditioned ventilation space 5 are similar to those shown in Figs. 1 and 2 described in the first embodiment, and therefore will be described with reference to Figs. 1 and 2.

[0048] [2-2. Operation] The operation of this embodiment will be described. FIG. 6 is a table showing conditions for determining the ventilation mode. First, the server processor 43 acquires, based on the detection value of the indoor air quality sensor 30, a representative value Tr of the indoor temperature, and an upper limit Ts1 and a lower limit Ts2 of the appropriate temperature range of the indoor temperature. In addition, the server processor 43 acquires a representative value Hr of the indoor humidity of the conditioned and ventilated space, and an upper limit Hs1 and a lower limit Hs2 of the appropriate humidity range of the indoor humidity. As the appropriate temperature range for the room temperature, for example, an upper limit Ts1 of 27° C. and a lower limit Ts2 of 23° C. are acquired. Also, as the appropriate humidity range for the room humidity, an upper limit Hs1 of 60% and a lower limit Hs2 of 40% are acquired.

[0049] Then, as shown in FIG. 6, the server processor 43 compares the representative value Tr of the room temperature with the upper limit Ts1 and lower limit Ts2 of the appropriate temperature range of the room temperature, and also compares the representative value Tr of the room temperature with the outside air temperature T0. In addition, the server processor 43 compares the representative value Hr of the indoor humidity with the upper limit Hs1 and lower limit Hs2 of the appropriate humidity range of the indoor humidity, and also compares the representative value Hr of the indoor humidity with the outside air humidity H0.

[0050] The server processor 43 determines whether the following condition is met based on the representative value Tr of the indoor temperature, the upper limit Ts1 and lower limit Ts2 of the appropriate temperature range of the indoor temperature, and the outdoor temperature T0. (Tr>Ts1) and (Tr>To).

[0051] In addition, the server processor 43 determines whether or not the following condition is met based on the representative value Hr of the indoor humidity, the upper limit Hs1 and lower limit Hs2 of the appropriate humidity range of the indoor temperature, and the outdoor humidity Ho. (Hr>Hs1) and (Hr>Ho). When it is determined that the above-mentioned two conditions are satisfied in the temperature judgment and the humidity judgment, the server processor 43 determines that the ventilation mode is to be the normal ventilation mode.

[0052] Furthermore, when the server processor 43 determines that the following two conditions are satisfied, it determines that the ventilation mode is to be the normal ventilation mode. (Tr>Ts1) and (Tr>To). (Hr <Hs2)かつ(Hr<Ho)。

[0053] Furthermore, when the server processor 43 determines that the following two conditions are satisfied, it determines that the ventilation mode is to be the normal ventilation mode. (Tr <Ts2)かつ(Tr<To)。 (Hr>Hs1) and (Hr>Ho). Similarly, when the server processor 43 determines that the following two conditions are satisfied, it determines that the ventilation mode is to be the normal ventilation mode. (Tr <Ts2)かつ(Tr<To)。 (Hr <Hs2)かつ(Hr<Ho)。

[0054] Furthermore, when the server processor 43 determines that the following four conditions are satisfied, it determines that the ventilation mode is to be the heat exchange ventilation mode. (Tr≦Ts1) or (Tr≦To). (Tr≧Ts2) or (Tr≧To). (Hr≦Hs1) or (Hr≦Ho). (Hr≧Hs2) or (Hr≧Ho).

[0055] In addition, if the values ​​of the representative indoor temperature Tr, the upper limit Ts1 and lower limit Ts2 of the appropriate temperature range, the outdoor temperature T0, the representative indoor humidity Hr, the upper limit Hs1 and lower limit Hs2 of the appropriate humidity range, and the outdoor humidity H0 do not meet any of the above-mentioned conditions, the server processor 43 determines that it is impossible to make a judgment. If it is determined that the determination is impossible, the server processor 43 is controlled to select the ventilation mode based on the enthalpy on the basis of FIG. 5, as described in the first embodiment.

[0056] [2-3. Effects, etc.] As described above, in the air conditioning and ventilation system 1, the server processor 43 (control device) acquires the upper and lower limits of the appropriate temperature range for the indoor unit 11 and the upper and lower limits of the appropriate humidity range for the conditioned and ventilated space 5 when the indoor unit 11 is in fan operation or stopped. Then, when the representative value of the indoor temperature is higher than the upper limit of the appropriate temperature range and the representative value of the indoor temperature is higher than the outdoor temperature, and the representative value of the indoor humidity is higher than the upper limit of the target humidity range and the representative value of the indoor humidity is higher than the outdoor humidity, or when the representative value of the indoor temperature is lower than the lower limit of the appropriate temperature range and the representative value of the indoor humidity is lower than the outdoor temperature, and the representative value of the indoor humidity is higher than the upper limit of the appropriate humidity range and the representative value of the indoor humidity is higher than the outdoor humidity, or when the representative value of the indoor temperature is higher than the upper limit of the appropriate temperature range and the representative value of the indoor humidity is higher than the outdoor temperature, and the representative value of the indoor humidity is lower than the lower limit of the appropriate humidity range and the representative value of the indoor humidity is lower than the outdoor humidity, or when the representative value of the indoor temperature is lower than the lower limit of the appropriate temperature range and the representative value of the indoor humidity is lower than the outdoor temperature, and the representative value of the indoor humidity is lower than the lower limit of the appropriate humidity range and the representative value of the indoor humidity is lower than the outdoor humidity, the ventilation device is operated in normal ventilation mode. Then, if the representative value of the indoor temperature is below the upper limit of the appropriate temperature range, or the representative value of the indoor temperature is below the outdoor temperature, and the representative value of the indoor temperature is above the lower limit of the appropriate temperature range, or the representative value of the indoor temperature is above the outdoor temperature, and the representative value of the indoor humidity is below the upper limit of the appropriate humidity range, or the representative value of the indoor humidity is below the outdoor humidity, and the representative value of the indoor humidity is above the lower limit of the appropriate humidity range, or the representative value of the indoor humidity is above the outdoor humidity, the ventilation device is operated in heat exchange ventilation mode, and otherwise it is determined that judgment is not possible. As a result, when the indoor unit 11 is in fan operation or stopped, in an environment where multiple indoor units 11 and ventilation devices 20 are installed, it is possible to appropriately set the ventilation mode of the ventilation device 20 to either normal ventilation mode or heat exchange ventilation mode.

[0057] (Other embodiments) As described above, the above-mentioned first and second embodiments have been described as examples disclosed in the present application. However, the technology in the present disclosure is not limited to these, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. have been made. In addition, it is also possible to combine the components described in the above-mentioned first and second embodiments to form new embodiments. Therefore, other embodiments will be exemplified below.

[0058] In the above-described embodiment, the server control device 41 is used as the "control device" of the present disclosure. However, the "control device" of the present disclosure is not limited to the server control device 41, and may be, for example, a centralized management device that centrally manages each device in a building, the indoor control device 12 of an air conditioning device, or the ventilation control device 21 of a ventilation device 20.

[0059] The indoor processor 14, the ventilation processor 23, and the server processor 43 may be configured with a single processor or multiple processors. These processors may be hardware programmed to realize the corresponding functional units. That is, these processors may be configured with, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[0060] The configurations of the indoor unit 11, the ventilation device 20, and the server device 40 shown in the first embodiment are merely examples, and the specific implementation form is not particularly limited. In other words, it is not necessarily necessary to implement hardware corresponding to each unit individually, and it is also possible to implement a configuration in which one processor executes a program to realize the functions of each unit. Also, some of the functions realized by software in the above-mentioned embodiment may be hardware, or some of the functions realized by hardware may be software.

[0061] The step units of the operation shown in the flowchart of Fig. 3 are divided according to the main processing contents in order to facilitate understanding of the operation, and the operation is not limited by the manner in which the processing units are divided or the names thereof. The operation may be divided into more step units according to the processing contents. Furthermore, one step unit may be divided so as to include more processing. Furthermore, the order of the steps may be appropriately changed within a range that does not impede the purpose of this disclosure.

[0062] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents.

[0063] (Additional Note) The above description of the embodiments discloses the following techniques.

[0064] (Technology 1) An air conditioning and ventilation system comprising a ventilation device and an air conditioning indoor unit installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity, and a control device that issues control instructions to the ventilation device and the indoor unit, wherein the control device acquires the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, and sets a ventilation mode based on the indoor temperature, outdoor temperature, and set temperature when the ventilation device is operated in a comfort priority mode, and sets the ventilation mode based on the indoor enthalpy and outdoor enthalpy when the ventilation device is operated in an energy saving priority mode. According to this configuration, in an environment where multiple indoor units and ventilation devices are installed, an appropriate operation mode for the ventilation device can be set by changing the conditions for changing the ventilation mode used when comfort is prioritized and when energy conservation is prioritized.

[0065] (Technology 2) The air conditioning and ventilation system according to Technology 1, wherein, when operating in the comfort priority mode, the control device operates the ventilation device in a normal ventilation mode if the representative value of the indoor temperature is greater than the representative value of the set temperature, and the representative value of the indoor temperature is greater than the outdoor temperature, and the representative value of the indoor humidity is greater than the target humidity, and the representative value of the indoor humidity is greater than the outdoor humidity; and operates the ventilation device in a heat exchange ventilation mode if the representative value of the indoor temperature is equal to or less than the representative value of the set temperature or the representative value of the indoor temperature is equal to or less than the outdoor temperature, and further, the representative value of the indoor humidity is equal to or less than the target humidity or the representative value of the indoor humidity is equal to or less than the outdoor humidity; and otherwise determines that judgment is impossible. According to this configuration, when operating the ventilation device in comfort priority mode in an environment where multiple indoor units and ventilation devices are installed, the ventilation mode can be appropriately set to either normal ventilation mode or heat exchange ventilation mode.

[0066] (Technique 3) When the indoor unit is in air blowing operation or stopped, the control device acquires the upper and lower limits of an appropriate temperature range for the conditioned and ventilated space and the upper and lower limits of an appropriate humidity range for the conditioned and ventilated space, and when the representative value of the indoor temperature is greater than the upper limit of the appropriate temperature range and the representative value of the indoor temperature is greater than the outdoor temperature, the representative value of the indoor humidity is greater than the upper limit of the target humidity range and the representative value of the indoor humidity is greater than the outdoor humidity, or when the representative value of the indoor temperature is smaller than the lower limit of the appropriate temperature range and the representative value of the indoor humidity is smaller than the outdoor temperature, the representative value of the indoor humidity is greater than the upper limit of the appropriate humidity range and the representative value of the indoor humidity is greater than the outdoor humidity, or when the representative value of the indoor temperature is greater than the upper limit of the appropriate temperature range and the representative value of the indoor humidity is greater than the outdoor temperature, the representative value of the indoor humidity is smaller than the lower limit of the appropriate humidity range and the representative value of the indoor humidity is greater than the outdoor humidity If the representative value of the indoor temperature is smaller than the outdoor humidity, or if the representative value of the indoor temperature is smaller than the lower limit of the appropriate temperature range and the representative value of the indoor temperature is smaller than the outdoor temperature, and the representative value of the indoor humidity is smaller than the lower limit of the appropriate humidity range and smaller than the outdoor humidity, the ventilation device is operated in normal ventilation mode; if the representative value of the indoor temperature is lower than the upper limit of the appropriate temperature range, or the representative value of the indoor temperature is lower than the outdoor temperature, and the representative value of the indoor temperature is equal to or lower than the lower limit of the appropriate temperature range, or the representative value of the indoor temperature is equal to or higher than the outdoor temperature, and the representative value of the indoor humidity is equal to or lower than the upper limit of the appropriate humidity range, or the representative value of the indoor humidity is equal to or lower than the outdoor humidity, and the representative value of the indoor humidity is equal to or higher than the outdoor humidity, the ventilation device is operated in heat exchange ventilation mode; otherwise, it is determined that the judgment is impossible. According to this configuration, when the indoor unit is in fan operation or stopped, in an environment where multiple indoor units and ventilation devices are installed, the ventilation mode of the ventilation device can be appropriately set to either normal ventilation mode or heat exchange ventilation mode.

[0067] (Technology 4) An air conditioning ventilation system as described in Technology 2 and Technology 3, wherein the control device, when operating in the energy saving priority mode or when it is determined that the judgment is impossible, operates the ventilation device in a normal ventilation mode if the difference between the indoor enthalpy and the outdoor enthalpy is smaller than a predetermined threshold value, and operates the ventilation device in a heat exchange ventilation mode if the difference between the indoor enthalpy and the outdoor enthalpy is equal to or greater than a predetermined threshold value. According to this configuration, when the ventilation device is operated in the energy saving priority mode, the ventilation device can be operated appropriately based on the indoor enthalpy and the outdoor enthalpy.

[0068] (Technology 5) An air conditioning ventilation system as described in any one of Technology 1 to Technology 4, in which a plurality of ventilation devices, indoor units, and indoor air quality sensors are provided, and the control device has a memory means for registering, for each of the plurality of ventilation devices, the indoor units and the indoor air quality sensors installed nearby in association with each other, and the control device identifies a ventilation device that is in operation, and acquires the set temperature and target humidity set by the indoor unit corresponding to the ventilation device that is in operation, and the indoor temperature, indoor humidity, and indoor enthalpy acquired by the indoor air quality sensor, respectively, to determine the operation mode of the ventilation device. With this configuration, the measurement ranges of temperature, humidity, and enthalpy used to select the ventilation mode are obtained from the indoor unit and indoor air quality sensor located near the operating ventilation device, making it possible to select a ventilation mode that more accurately reflects the indoor temperature and humidity around the operating ventilation device.

[0069] (Technology 6) The air conditioning and ventilation system according to any one of Technology 1 to Technology 5, wherein the control device determines whether to operate the ventilation device in a comfort-priority mode or an energy-saving-priority mode based on the operation day, operation time, or operation status of the indoor unit of the ventilation device. According to this configuration, the control device can automatically determine whether to operate the ventilation device in a comfort priority mode or an energy saving priority mode.

[0070] (Technology 7) A control method for an air conditioning and ventilation system including a ventilation device and an indoor unit of an air conditioner installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity, and a control device that issues control instructions to the ventilation device and the indoor unit, wherein the control device performs the following processes: acquires the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, and when operating the ventilation device in a comfort priority mode, sets a ventilation mode based on the indoor temperature, outdoor temperature, and set temperature; and when operating the ventilation device in an energy saving priority mode, sets the ventilation mode based on the indoor enthalpy and outdoor enthalpy. According to this configuration, in an environment where multiple indoor units and ventilation devices are installed, the operating conditions for the ventilation device can be changed depending on whether comfort is prioritized or energy conservation is prioritized, making it possible to set an appropriate operating mode for the ventilation device.

[0071] (Technology 8) A program that causes a processor of a control device provided in an air conditioning and ventilation system that includes a ventilation device and an air conditioning indoor unit installed in a conditioned and ventilated space, an indoor air quality sensor that detects the indoor temperature and indoor humidity of the conditioned and ventilated space, and an outdoor air quality sensor that detects the outdoor temperature and outdoor humidity, to execute the following steps: acquiring the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature and target humidity of the indoor unit, if the ventilation device is to be operated in a comfort priority mode, setting a ventilation mode based on the indoor temperature, outdoor temperature, and set temperature, and if the ventilation device is to be operated in an energy saving priority mode, setting the ventilation mode based on the indoor enthalpy and outdoor enthalpy. According to this configuration, in an environment where multiple indoor units and ventilation devices are installed, the operating conditions for the ventilation device can be changed depending on whether comfort is prioritized or energy conservation is prioritized, making it possible to set an appropriate operating mode for the ventilation device. [Industrial Applicability]

[0072] As described above, the air conditioning and ventilation system, and the control method and program for the air conditioning and ventilation system according to the present disclosure can be suitably used in an environment where multiple indoor units and ventilation devices are installed, for purposes of being able to set an appropriate operation mode for the ventilation device by changing the conditions for using the operation mode of the ventilation device depending on whether comfort is prioritized or energy efficiency is prioritized. [Explanation of symbols]

[0073] 1. Air conditioning and ventilation system 5. Air-conditioned and ventilated spaces 10. Air conditioning equipment 11 Indoor unit 12 Indoor control device 13 Indoor communication section 14 Indoor Processor 15 Indoor Memory 16 Control Program 20 Ventilation system 21 Ventilation control device 22 Ventilation communication unit 23 Ventilation Processor 24 Ventilation Memory 25 Control Program 30 Indoor Air Quality Sensor 31 Outdoor Air Quality Sensor 40 Server device 41 Server control device 42 Server Communication Department 43 Server Processor 44 Server Memory 45 Control Program 50 Router 51 Network

Claims

1. A ventilation device and an indoor unit of an air conditioner installed in the conditioned ventilation space; an indoor air quality sensor for detecting an indoor temperature and an indoor humidity of the conditioned and ventilated space; an outdoor air quality sensor for detecting outdoor temperature and outdoor humidity; An air conditioning and ventilation system comprising the ventilation device and a control device that issues control instructions to the indoor unit, The control device includes: The indoor temperature, indoor humidity, and indoor enthalpy measured by the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy measured by the outdoor air quality sensor, the set temperature of the indoor unit, and the target humidity are respectively obtained; When the ventilation device is operated in a comfort-priority mode, the ventilation mode is set based on an indoor temperature, an outdoor temperature, and a set temperature, and when the ventilation device is operated in an energy-saving-priority mode, the ventilation mode is set based on an indoor enthalpy and an outdoor enthalpy. Air conditioning ventilation system.

2. The control device includes: When operating in the comfort priority mode, if the representative value of the indoor temperature is greater than the representative value of the set temperature, the representative value of the indoor temperature is greater than the outdoor temperature, the representative value of the indoor humidity is greater than the target humidity, and the representative value of the indoor humidity is greater than the outdoor humidity, the ventilation device is operated in a normal ventilation mode; When the representative value of the indoor temperature is equal to or lower than the representative value of the set temperature, or the representative value of the indoor temperature is equal to or lower than the outdoor temperature, and further, when the representative value of the indoor humidity is equal to or lower than the target humidity, or when the representative value of the indoor humidity is equal to or lower than the outdoor humidity, the ventilation device is operated in a heat exchange ventilation mode; In other cases, it is deemed impossible to determine. The air conditioning and ventilation system according to claim 1 .

3. The control device includes: When the indoor unit is in a fan operation or stopped state, the upper and lower limits of the appropriate temperature range of the air-conditioned and ventilated space and the upper and lower limits of the appropriate humidity range of the air-conditioned and ventilated space are obtained; When the representative value of the indoor temperature is greater than the upper limit of the appropriate temperature range and is greater than the outdoor temperature, the representative value of the indoor humidity is greater than the upper limit of the target humidity range and is greater than the outdoor humidity, or when the representative value of the indoor temperature is smaller than the lower limit of the appropriate temperature range and is smaller than the outdoor temperature, the representative value of the indoor humidity is greater than the upper limit of the appropriate humidity range and is greater than the outdoor humidity, or when the representative value of the indoor temperature is greater than the upper limit of the appropriate temperature range and is greater than the outdoor temperature, the representative value of the indoor humidity is greater than the upper limit of the appropriate humidity range and is greater than the outdoor humidity, or when the representative value of the indoor temperature is greater than the upper limit of the appropriate temperature range and is greater than the outdoor temperature, the representative value of the indoor humidity is smaller than the lower limit of the appropriate humidity range and is smaller than the outdoor humidity, or when the representative value of the indoor temperature is smaller than the lower limit of the appropriate temperature range and is smaller than the outdoor temperature, the representative value of the indoor humidity is smaller than the lower limit of the appropriate humidity range and is smaller than the outdoor humidity, When the representative value of the indoor temperature is equal to or lower than the upper limit of the appropriate temperature range, or the representative value of the indoor temperature is equal to or lower than the outdoor temperature, and the representative value of the indoor temperature is equal to or higher than the lower limit of the appropriate temperature range, or the representative value of the indoor temperature is equal to or higher than the outdoor temperature, and the representative value of the indoor humidity is equal to or lower than the upper limit of the appropriate humidity range, or the representative value of the indoor humidity is equal to or lower than the outdoor humidity, and the representative value of the indoor humidity is equal to or higher than the lower limit of the appropriate humidity range, or the representative value of the indoor humidity is equal to or higher than the outdoor humidity, the ventilation device is operated in a heat exchange ventilation mode; In other cases, it is deemed impossible to determine. The air conditioning and ventilation system according to claim 1 .

4. The control device includes: When operating in the energy saving priority mode or when it is determined that the judgment is impossible, if the difference between the indoor enthalpy and the outdoor enthalpy is smaller than a predetermined threshold, the ventilation device is operated in a normal ventilation mode; When the difference between the indoor enthalpy and the enthalpy is equal to or greater than a predetermined threshold, the ventilation device is operated in a heat exchange ventilation mode. The air conditioning and ventilation system according to claim 2 or 3.

5. The ventilation device, the indoor unit, and the indoor air quality sensor are each provided in plurality, the control device includes a storage means for registering, for each of the plurality of ventilation devices, the indoor units and the indoor air quality sensors installed nearby in association with each other; The control device identifies a ventilation device in an operating state, acquires the set temperature and target humidity by the indoor unit corresponding to the ventilation device in an operating state, and the indoor temperature, indoor humidity, and indoor enthalpy by the indoor air quality sensor, and determines the operation mode of the ventilation device. The air conditioning and ventilation system according to claim 4.

6. The control device determines whether to operate the ventilation device in a comfort priority mode or an energy saving priority mode based on the operation day of the week, the operation time, or the operation status of the indoor unit of the ventilation device. The air conditioning and ventilation system according to claim 1 .

7. A ventilation device and an indoor unit of an air conditioner installed in the conditioned ventilation space; an indoor air quality sensor for detecting an indoor temperature and an indoor humidity of the conditioned and ventilated space; an outdoor air quality sensor for detecting outdoor temperature and outdoor humidity; A control method for an air conditioning ventilation system including the ventilation device and a control device that issues control instructions to the indoor unit, The control device A process of acquiring the indoor temperature, indoor humidity, and indoor enthalpy from the indoor air quality sensor, the outdoor temperature, outdoor humidity, and outdoor enthalpy from the outdoor air quality sensor, the set temperature of the indoor unit, and the target humidity; When the ventilation device is operated in a comfort-priority mode, a process of setting a ventilation mode based on an indoor temperature, an outdoor temperature, and a set temperature; When the ventilation device is operated in an energy saving priority mode, a process of setting a ventilation mode based on an indoor enthalpy and an outdoor enthalpy is performed. A method for controlling an air conditioning and ventilation system.

8. A processor of a control device provided in an air conditioning and ventilation system including a ventilation device and an indoor unit of the air conditioning installed in a space to be air-conditioned and ventilated, an indoor air quality sensor that detects an indoor temperature and an indoor humidity in the space to be air-conditioned and ventilated, and an outdoor air quality sensor that detects an outdoor temperature and an outdoor humidity, A step of acquiring an indoor temperature, an indoor humidity, and an indoor enthalpy by the indoor air quality sensor, an outdoor temperature, an outdoor humidity, and an outdoor enthalpy by the outdoor air quality sensor, a set temperature of the indoor unit, and a target humidity; When the ventilation device is operated in a comfort-priority mode, a ventilation mode is set based on an indoor temperature, an outdoor temperature, and a set temperature; When the ventilation device is operated in an energy saving priority mode, a ventilation mode is set based on an indoor enthalpy and an outdoor enthalpy. program.

Images