Air conditioning system, outside air cooling control method and information processing unit

Abstract

To provide an air conditioning system that corrects an outside air cooling start condition and cools an indoor side comfortably through an outside air cooling operation, an outside air cooling control method and an information processing unit.SOLUTION: An air conditioning system includes a control section. The control section acquires a duration of an outside air cooling operation from start of the outside air cooling operation for taking in outside air by driving a ventilation apparatus to cool an indoor space to completion of the outside air cooling operation, and corrects an outside air cooling start condition in accordance with the duration of the outside air cooling operation.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an air conditioning system, an outdoor air cooling control method, and an information processing device. [Background technology]

[0002] For example, outdoor air cooling, which cools the room by introducing outdoor air into the room when the temperature and humidity conditions of the outdoor air are lower in temperature or humidity than the temperature and humidity conditions of the room, has been known for some time (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-121131 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the internal load (outdoor air load, envelope load, or indoor load) differs from property to property. For example, the indoor load differs depending on the number of people in the room or the number of heat sources. For this reason, with conventional air conditioning systems, even if the outdoor air cooling start conditions are met and outdoor air cooling operation is started, there are cases where the indoor space cannot be comfortably cooled by outdoor air cooling if the internal load is large.

[0005] The present disclosure aims to provide an air conditioning system, an outdoor air cooling control method, and an information processing device that corrects outdoor air cooling start conditions and comfortably cools a room using outdoor air cooling operation. [Means for solving the problem]

[0006] A first aspect of the present disclosure is an air conditioning system having a control unit, which obtains the duration of outdoor air cooling operation, which takes in outside air to cool the room by driving a ventilation device, from the start of the outdoor air cooling operation to the end of the outdoor air cooling operation, and corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation.

[0007] According to the first aspect of the present disclosure, it is possible to provide an air conditioning system that corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation and cools the room comfortably by the outdoor air cooling operation.

[0008] A second aspect of the present disclosure is the air conditioning system of the first aspect, wherein the control unit acquires the duration of one outdoor air cooling operation, or the duration of each of multiple outdoor air cooling operations, and corrects the outdoor air cooling start condition according to the duration of one outdoor air cooling operation, or the duration of each of the multiple outdoor air cooling operations.

[0009] According to the second aspect of the present disclosure, the outdoor air cooling start condition can be corrected according to the duration of one outdoor air cooling operation, or the duration of each of multiple outdoor air cooling operations.

[0010] A third aspect of the present disclosure is an air conditioning system of the first or second aspect, wherein the control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation is more likely to be started if the duration of the outdoor air cooling operation is longer than a first predetermined time.

[0011] According to a third aspect of the present disclosure, if the acquired duration of outdoor air cooling operation is longer than a first predetermined time, the outdoor air cooling start condition is corrected so that outdoor air cooling operation is more likely to be started, making it easier to start outdoor air cooling when there is a high probability that outdoor air cooling can be continued.

[0012] A fourth aspect of the present disclosure is an air conditioning system of the first or second aspect, wherein the control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation is less likely to be started if the duration of the outdoor air cooling operation is shorter than a second predetermined time.

[0013] According to a fourth aspect of the present disclosure, if the acquired duration of outdoor air cooling operation is shorter than a second predetermined time, the outdoor air cooling start condition can be corrected so that outdoor air cooling operation becomes less likely to be started, thereby making it more difficult to start outdoor air cooling when the outdoor air cooling is unlikely to be able to be continued.

[0014] A fifth aspect of the present disclosure is an air conditioning system described in any one of the first to fourth aspects, wherein the control unit corrects the outdoor air cooling start condition such that the correction range is larger the shorter the duration of the outdoor air cooling operation.

[0015] According to a fifth aspect of the present disclosure, the outdoor air cooling start conditions can be corrected so that the shorter the duration of outdoor air cooling operation, the more unlikely it is to start outdoor air cooling operation, making it more unlikely to start outdoor air cooling when the possibility of continuing outdoor air cooling is low.

[0016] A sixth aspect of the present disclosure is an air conditioning system described in any one of the first to fifth aspects, wherein the outdoor air cooling start condition is defined by an enthalpy difference between indoors and outdoors and a correction value, and the correction value is a correction value that corrects the enthalpy difference between indoors and outdoors of the outdoor air cooling start condition.

[0017] According to a sixth aspect of the present disclosure, an air conditioning system can be provided that corrects the outdoor air cooling start condition, which is defined by the enthalpy difference between indoors and outdoors and a correction value, depending on the duration of outdoor air cooling operation, and comfortably cools the room using outdoor air cooling operation.

[0018] A seventh aspect of the present disclosure is an air conditioning system described in any one of the first to sixth aspects, wherein the control unit does not start the outdoor air cooling operation for a third predetermined time after an outdoor air cooling termination condition is satisfied and the outdoor air cooling operation is terminated.

[0019] According to a seventh aspect of the present disclosure, after the outdoor air cooling end condition is satisfied and the outdoor air cooling operation is ended, control is performed so that the outdoor air cooling operation is not started until a third predetermined time has elapsed, thereby preventing the outdoor air cooling operation from being repeatedly started and ended in a short period of time.

[0020] An eighth aspect of the present disclosure is an air conditioning system described in any one of the first to seventh aspects, wherein the control unit returns the outdoor air cooling start condition to an initial value when a fourth predetermined time has elapsed since the last outdoor air cooling operation.

[0021] According to an eighth aspect of the present disclosure, when a fourth predetermined time has elapsed since the end of the last outdoor air cooling operation, the outdoor air cooling start condition is returned to an initial value, thereby preventing the outdoor air cooling operation from not being started.

[0022] A ninth aspect of the present disclosure is the air conditioning system of the sixth aspect, wherein the control unit returns the correction value of the outdoor air cooling start condition to an initial value when the correction value of the outdoor air cooling start condition becomes smaller than a predetermined value.

[0023] According to the ninth aspect of the present disclosure, by returning the correction value of the outdoor air cooling start condition that has become smaller than a predetermined value to the initial value, it is possible to prevent the outdoor air cooling operation from not being started.

[0024] A tenth aspect of the present disclosure is an outdoor air cooling control method executed by an air conditioning system having a control unit, which obtains the duration of outdoor air cooling operation, in which outdoor air is taken in by driving a ventilation device to cool the room, from the start of the operation to the end of the outdoor air cooling operation, and corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation.

[0025] According to the tenth aspect of the present disclosure, it is possible to provide an outdoor air cooling control method that corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation, and comfortably cools the room by the outdoor air cooling operation.

[0026] An eleventh aspect of the present disclosure is an information processing device having a control unit and controlling an air conditioning system, wherein the control unit obtains the duration of outdoor air cooling operation, which takes in outside air by driving a ventilation device to cool the room, from the start of the outdoor air cooling operation to the end of the outdoor air cooling operation, and corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation.

[0027] According to the eleventh aspect of the present disclosure, it is possible to provide an information processing device that corrects the outdoor air cooling start condition in accordance with the duration of the outdoor air cooling operation and comfortably cools the room by the outdoor air cooling operation. [Brief description of the drawings]

[0028] [Figure 1] 1 is a configuration diagram of an example of an air conditioning system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram illustrating an example of a hardware configuration of a computer according to the present embodiment. [Diagram 3] FIG. 2 is a diagram for explaining an air conditioning system on the property side according to the embodiment. [Figure 4] FIG. 4 is a sequence diagram showing an example of a processing procedure of the air conditioning system according to the present embodiment. [Diagram 5] 5 is a flowchart showing an example of a process for correcting a correction value ΔH of the air conditioning system according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Next, embodiments of the present disclosure will be described in detail.

[0030] [First embodiment] <System configuration> Fig. 1 is a configuration diagram of an example of an air conditioning system 1 according to this embodiment. The air conditioning system 1 shown in Fig. 1 includes an outdoor unit 12, a ventilation device 14, an indoor unit 16, an edge device 18, an application server device 30, and an API gateway server device 40.

[0031] The building 10 is provided with an outdoor unit 12, a ventilation device 14, an indoor unit 16, and an edge device 18. The outdoor unit 12, the ventilation device 14, and the indoor unit 16 are examples of air conditioning equipment that realizes cooling operation and outdoor air cooling operation indoors in the building 10. The edge device 18 is communicatively connected to the outdoor unit 12, the ventilation device 14, and the indoor unit 16 via a dedicated communication line or the like.

[0032] The edge device 18 is communicatively connected to the API gateway server device 40 via a network 50. The network 50 is, for example, the Internet. The edge device 18 receives an operation instruction request for the outdoor unit 12, the ventilation device 14, and the indoor unit 16 from the API gateway server device 40, and issues operation instructions to the outdoor unit 12, the ventilation device 14, and the indoor unit 16.

[0033] The API gateway server device 40 is communicably connected to the edge device 18 and the application server device 30 via a network 50. The API gateway server device 40 also provides an API (Application Programming Interface).

[0034] The API gateway server device 40 can receive data such as the operating status of the outdoor unit 12, the ventilation device 14, and the indoor unit 16 of the building 10 from the edge device 18, and transmit the data to the application server device 30. The data such as the operating status includes information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity. The information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity may be acquired from any of the outdoor unit 12, the ventilation device 14, or the indoor unit 16. In addition, the information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity may be acquired from a temperature and humidity sensor connected via a network 50.

[0035] The application server device 30 is communicatively connected to an API gateway server device 40 via a network 50. The application server device 30 uses an API provided by the API gateway server device 40 to remotely issue operation instructions to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10. The application server device 30 uses the API provided by the API gateway server device 40 to remotely acquire data such as the operating status of the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10.

[0036] For example, the application server device 30 acquires data on the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10, and determines whether or not to start outdoor air cooling operation by using the data to determine whether an outdoor air cooling start condition is satisfied. Also, the application server device 30 acquires data on the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10, and determines whether or not to end outdoor air cooling operation by using the data to determine whether or not an outdoor air cooling end condition is satisfied.

[0037] The application server device 30, which has determined the start or end of the outdoor air cooling operation, issues an operational instruction to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 to start or end the outdoor air cooling operation, using an API provided by the API gateway server device 40. Furthermore, before the start of the outdoor air cooling operation, the application server device 30 issues an operational instruction to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 to start cooling operation, using an API provided by the API gateway server device 40. Furthermore, after the end of the outdoor air cooling operation, the application server device 30 issues an operational instruction to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 to start cooling operation, using an API provided by the API gateway server device 40.

[0038] The application server device 30 has a control unit 32. The control unit 32 is a hardware configuration that executes a program, and is a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), etc. For example, the application server device 30 can execute various processes described below by causing a CPU, which is an example of the control unit 32, to execute a program.

[0039] 1 is an example. For example, the application server device 30 may be realized by one or more information processing devices. Furthermore, the application server device 30 may be realized as a cloud computing service.

[0040] The API gateway server device 40 may be realized by one or more information processing devices. The API gateway server device 40 may be realized as a cloud computing service.

[0041] 1 shows the control unit 32 of the application server device 30 as an example, the edge device 18 and the API gateway server device 40 also have control units. The outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 may also have control units. The various processes described below executed by the control unit 32 of the application server device 30 may be executed by the control unit of the edge device 18, the API gateway server device 40, the outdoor unit 12, the ventilation equipment 14, or the indoor unit 16. The various processes described below executed by the control unit 32 of the application server device 30 may be executed by two or more control units of the edge device 18, the API gateway server device 40, the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 in cooperation with each other.

[0042] It goes without saying that there are various system configuration examples for the configuration of the air conditioning system 1 in Fig. 1 depending on the application and purpose. The numbers of outdoor units 12, ventilation equipment 14, and indoor units 16 in the building 10 shown in Fig. 1 are just an example.

[0043] <Hardware configuration> The application server device 30 in Fig. 1 is realized, for example, by a computer 500 having the hardware configuration shown in Fig. 2. Moreover, the edge device 18 and the API gateway server device 40 in Fig. 1 may be realized by the computer 500 having the hardware configuration shown in Fig. 2.

[0044] 2 is a diagram showing an example of a hardware configuration of a computer 500 according to this embodiment. The computer 500 includes an input device 501, a display device 502, an external I / F 503, a RAM (Random Access Memory) 504, a ROM (Read Only Memory) 505, a CPU 506, a communication I / F 507, and a HDD (Hard Disk Drive) 508, all of which are connected to each other via a bus B. The input device 501 and the display device 502 may be connected and used when necessary.

[0045] The input device 501 is a touch panel, operation keys or buttons, a keyboard, a mouse, etc., used by the user to input various signals. The display device 502 is composed of a display such as a liquid crystal or organic EL display for displaying a screen, a speaker for outputting sound data such as voice and music, etc. The communication I / F 507 is an interface for the computer 500 to perform data communication via the network 50.

[0046] The HDD 508 is an example of a non-volatile storage device that stores programs and data. The stored programs and data include an OS (Operating System), which is basic software that controls the entire computer 500, and applications (hereinafter simply referred to as apps) that provide various functions on the OS. Note that the computer 500 may use a drive device (such as a solid-state drive: SSD) that uses a flash memory as a storage medium instead of the HDD 508.

[0047] The external I / F 503 is an interface with an external device. The external device may be a recording medium 503a. The computer 500 reads and writes data from and to the recording medium 503a via the external I / F 503.

[0048] The recording medium 503a is a flexible disk, a CD (Compact Disc), a DVD (Digital Versatile Disc), an SD (Secure Digital) memory card, a USB (Universal Serial Bus) memory, or the like.

[0049] The ROM 505 is an example of a non-volatile semiconductor memory (storage device) that can retain programs and data even when the power is turned off. The ROM 505 stores programs and data such as a basic input output system (BIOS) that is executed when the computer 500 is started, OS settings, and network settings. The RAM 504 is an example of a volatile semiconductor memory (storage device) that temporarily retains programs and data.

[0050] The CPU 506 is an arithmetic unit that realizes the overall control and functions of the computer 500 by reading programs and data from a storage device such as the ROM 505 or the HDD 508 onto the RAM 504 and executing processes.

[0051] FIG. 3 is a diagram for explaining the air conditioning system on the property side according to this embodiment. As shown in FIG. 3, the air conditioning system on the property side has an outdoor unit 12, a ventilation device 14, an indoor unit 16, a temperature sensor 60 for measuring an outdoor temperature, a humidity sensor 62 for measuring an outdoor humidity, a temperature sensor 64 for measuring an indoor temperature, and a humidity sensor 66 for measuring an indoor humidity. The outdoor unit 12 is installed outside the building. FIG. 3 shows an example in which the temperature sensor 60 for measuring the outdoor temperature and the humidity sensor 62 for measuring the outdoor humidity are provided in the outdoor unit 12. The ventilation device 14 is installed inside the building. The ventilation device 14 is an example of a ventilation facility that exhausts indoor air and supplies outdoor air to the room. The indoor unit 16 is installed inside the building. FIG. 3 shows an example in which the temperature sensor 64 for measuring the indoor temperature and the humidity sensor 66 for measuring the indoor humidity are provided in the indoor unit 16.

[0052] <Explanation of outdoor air cooling> The outdoor air cooling according to this embodiment is started when an outdoor air cooling start condition, described below, is satisfied using the outdoor enthalpy and the indoor enthalpy calculated by the following formula (1). Also, the outdoor air cooling according to this embodiment is ended when an outdoor air cooling end condition, described below, is satisfied using the outdoor enthalpy and the indoor enthalpy calculated by the following formula (1).

[0053]

number

[0054] In the outdoor air cooling operation mode, the difference between the outdoor enthalpy and the indoor enthalpy is utilized to cool the indoor space with outdoor air. However, the internal load (outdoor air load, exterior load, or indoor load) differs from property to property. For example, the indoor load differs depending on the number of people in the room or the number of heat sources. For this reason, in a property with an excessively large internal load, the room may not be cooled comfortably even if the outdoor air cooling start conditions are met and outdoor air cooling operation is started.

[0055] Therefore, in the air conditioning system 1 of this embodiment, the outdoor air cooling start conditions are corrected according to the duration of outdoor air cooling operation from when the outdoor air cooling start conditions are satisfied and outdoor air cooling operation is started to when the outdoor air cooling operation is ended (the duration of outdoor air cooling operation from when the outdoor air cooling start conditions are satisfied and outdoor air cooling operation is started to when the outdoor air cooling end conditions are satisfied and outdoor air cooling operation is ended), thereby converging to an appropriate outdoor air cooling start condition that corresponds to the internal load that differs for each room in the property.

[0056] For example, the timing at which the outdoor air cooling operation ends when the outdoor air cooling end condition is satisfied in a property with a large internal load is earlier than the timing at which the outdoor air cooling operation ends when the outdoor air cooling end condition is satisfied in the room of a property with a small internal load. The duration of outdoor air cooling operation in a property with a large internal load is shorter than the duration of outdoor air cooling operation in a property with a small internal load.

[0057] In addition, the timing at which the outdoor air cooling operation ends when the outdoor air cooling end condition is satisfied in a property with a small internal load is later than the timing at which the outdoor air cooling operation ends when the outdoor air cooling end condition is satisfied indoors in a property with a large internal load. The duration of outdoor air cooling operation in a property with a small internal load is longer than the duration of outdoor air cooling operation in a property with a large internal load.

[0058] In the air conditioning system 1 according to the present embodiment, if the duration of the outdoor air cooling operation is longer than a first predetermined time (e.g., a predetermined time included in 45 to 90 minutes), the outdoor air cooling start condition is corrected so that the outdoor air cooling operation is more likely to start. Also, in the air conditioning system 1 according to the present embodiment, if the duration of the outdoor air cooling operation is shorter than a second predetermined time (e.g., a predetermined time included in 10 to 40 minutes), the outdoor air cooling start condition is corrected so that the outdoor air cooling operation is less likely to start.

[0059] <Processing> The air conditioning system 1 according to this embodiment performs, for example, outdoor air cooling control as shown in Fig. 4. Fig. 4 is a sequence diagram showing an example of a processing procedure of the air conditioning system 1 according to this embodiment.

[0060] For example, an application for outdoor air cooling is installed in the application server device 30. The control unit 32 of the application server device 30 executes the application for outdoor air cooling, thereby performing the following processes.

[0061] The control unit 32 of the application server device 30 sets the correction value ΔH to an initial value of “0” when the outdoor air cooling control in FIG. 4 starts or when a fourth predetermined time (for example, a predetermined time included in the 5th to 10th days) has elapsed since the last outdoor air cooling operation.

[0062] Step S8 represents a process of transmitting data such as the operating status of the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 from the edge device 18 to the API gateway server device 40, and storing the data in the API gateway server device 40. The process of step S8 is performed before the process of step S10.

[0063] The control unit 32 of the application server device 30 executes the process of step S10 at every predetermined time (for example, a predetermined time included in 2 minutes to 8 minutes). In step S10, the control unit 32 of the application server device 30 executes the data acquisition API of the API gateway server device 40.

[0064] In step S12, the control unit 32 of the application server device 30 acquires data such as the operating states of the outdoor unit 12, the ventilation device 14, and the indoor unit 16 of the building 10 from the API gateway server device 40. The data such as the operating states includes information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity. The information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity may be acquired from any of the outdoor unit 12, the ventilation device 14, or the indoor unit 16. In addition, the information on the indoor temperature, the outdoor temperature, the indoor humidity, and the outdoor humidity may be acquired from a temperature and humidity sensor connected via the network 50.

[0065] In step S14, the control unit 32 of the application server apparatus 30 determines whether or not the outdoor air cooling start condition is satisfied, using the data acquired in step S12, to thereby determine whether or not to start the outdoor air cooling operation.

[0066] In addition, the control unit 32 of the application server device 30 determines whether or not to end the outdoor air cooling operation by determining whether or not the outdoor air cooling end condition is satisfied, using the data acquired in step S12.

[0067] In step S16, the control unit 32 of the application server device 30 determines whether or not to change the operation mode in the determination in step S14. For example, when the control unit 32 of the application server device 30 determines in step S14 to start or end the outdoor air cooling operation, the control unit 32 determines to change the operation mode.

[0068] If it is determined that the operation mode is to be changed, the control unit 32 of the application server device 30 performs the processes in and after step S18. If it is determined that the operation mode is not to be changed, the control unit 32 of the application server device 30 returns to the process in step S8 after a predetermined time (for example, a predetermined time included in 2 to 8 minutes).

[0069] In step S18, the control unit 32 of the application server device 30 executes the operation instruction API of the API gateway server device 40 to switch to the operation mode determined to be changed in step S16. In step S20, the API gateway server device 40 requests the edge device 18 of the building 10 to issue an operation instruction to switch to the operation mode determined to be changed in step S16. In step S22, the edge device 18 issues an operation instruction to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 to switch to the operation mode determined to be changed in step S16.

[0070] In step S24, the control unit 32 of the application server device 30 determines whether the outdoor air cooling operation has ended. If the outdoor air cooling operation has not ended, the control unit 32 of the application server device 30 returns to the processing of step S8. If the outdoor air cooling operation has ended, in step S25, the control unit 32 of the application server device 30 executes the operation instruction API of the API gateway server device 40 to switch to cooling operation. In step S26, the API gateway server device 40 requests the edge device 18 of the building 10 to issue an operation instruction to switch to cooling operation. In step S27, the edge device 18 issues an operation instruction to the outdoor unit 12, the ventilation equipment 14, and the indoor unit 16 of the building 10 to switch to cooling operation.

[0071] In step S28, the control unit 32 of the application server device 30 calculates the duration of the outdoor air cooling operation from the start of the outdoor air cooling operation to the end of the outdoor air cooling operation. For example, the duration of the outdoor air cooling operation is the duration from the start of the outdoor air cooling operation by satisfying the outdoor air cooling start condition of the outdoor air cooling operation to the end of the outdoor air cooling operation by satisfying the outdoor air cooling end condition of the outdoor air cooling operation.

[0072] After performing the correction process of the outdoor air cooling start condition in step S29, the control unit 32 of the application server device 30 returns to the process of step S8.

[0073] The outdoor air cooling start condition correction process in step S29 will be further described. The outdoor air cooling start condition can be expressed, for example, by the following formula (2). Formula (2) defines the outdoor air cooling start condition by the indoor / outdoor enthalpy difference and a correction value ΔH. The correction value ΔH is a correction value that corrects the indoor / outdoor enthalpy difference of the outdoor air cooling start condition.

[0074] Outdoor enthalpy ≦ Indoor enthalpy + ΔH…(2)

[0075] The outdoor air cooling end condition can be expressed, for example, by the following formula (3): Formula (3) defines the outdoor air cooling end condition by the indoor / outdoor enthalpy difference, the correction value ΔH, and a constant A (for example, 3 to 8).

[0076] Outdoor enthalpy > indoor enthalpy + ΔH + A…(3) The outdoor air cooling start condition may be defined, in addition to the above-mentioned formula (2), as outdoor air temperature, the relationship between the outdoor air temperature and the set temperature, the relationship between the indoor temperature and the set temperature, indoor humidity, etc. Also, instead of the above-mentioned formula (2), the outdoor air cooling start condition may be defined, in addition to the above-mentioned formula (2), as an equation such as indoor temperature≦set temperature+0.5°C. The outdoor air cooling end condition may be defined, in addition to the above-mentioned formula (3), as outdoor air temperature, the relationship between the outdoor air temperature and the set temperature, the relationship between the indoor temperature and the set temperature, indoor humidity, etc. Also, instead of the above-mentioned formula (3), the outdoor air cooling end condition may be defined, in addition to the above-mentioned formula (3), as an equation such as indoor temperature>set temperature+1°C.

[0077] When the outdoor air cooling operation ends, the control unit 32 of the application server device 30 corrects the outdoor air cooling start condition of formula (2) according to the duration of the outdoor air cooling operation acquired in step S28. For example, if the duration of the outdoor air cooling operation acquired in step S28 is longer than a first predetermined time (for example, a predetermined time included in 45 minutes to 90 minutes), the control unit 32 of the application server device 30 considers that the room could have been comfortably cooled by outdoor air cooling, and corrects the correction value ΔH of the outdoor air cooling start condition so that the outdoor air cooling operation is more likely to start. The control unit 32 of the application server device 30 increases the time of the outdoor air cooling operation and suppresses energy consumption by correcting the correction value ΔH of the outdoor air cooling start condition so that the outdoor air cooling operation is more likely to start.

[0078] If the duration of the outdoor air cooling operation acquired in step S28 is shorter than a second predetermined time (for example, a predetermined time included in 10 to 40 minutes), the control unit 32 of the application server device 30 determines that the room has not been comfortably cooled by outdoor air cooling, and therefore corrects the correction value ΔH of the outdoor air cooling start condition so that the outdoor air cooling operation becomes less likely to start. The control unit 32 of the application server device 30 corrects the correction value ΔH of the outdoor air cooling start condition so that the outdoor air cooling operation becomes less likely to start, thereby suppressing the frequency of switching between the outdoor air cooling operation and the cooling operation.

[0079] By repeating the process of Figure 4, the control unit 32 of the application server device 30 according to this embodiment can correct the correction value ΔH according to the duration of the outdoor air cooling operation, thereby converging the correction value ΔH so that the outdoor air cooling start condition becomes appropriate taking into account the internal load that differs for each property.

[0080] 4 in which the control unit 32 of the application server device 30 according to this embodiment corrects the correction value ΔH of the outdoor air cooling start condition and the outdoor air cooling end condition will be further described. Fig. 5 is a flowchart showing an example of a process for correcting the correction value ΔH of the air conditioning system 1 according to this embodiment.

[0081] In step S46, the control unit 32 of the application server device 30 determines whether the duration acquired in step S28 of FIG. 4 is equal to or longer than a first predetermined time (eg, a predetermined time included in the range of 45 minutes to 90 minutes).

[0082] If the duration is equal to or longer than the first predetermined time, the control unit 32 of the application server device 30 performs processing of step S48 to add "1" to the correction value ΔH of the outdoor air cooling start condition, and proceeds to processing of step S56. By processing of step S48, the outdoor air cooling start condition is corrected so that the next and subsequent outdoor air cooling operations are started with a smaller enthalpy difference between the indoors and outdoors, making it easier to start the outdoor air cooling operation and promoting energy saving through outdoor air cooling. If the duration is not equal to or longer than the first predetermined time, the control unit 32 of the application server device 30 proceeds to processing of step S50.

[0083] In step S50, the control unit 32 of the application server device 30 determines whether or not the duration acquired in step S28 of FIG. 4 is less than a second predetermined time (for example, a predetermined time included in the range of 10 minutes to 40 minutes).

[0084] If the duration is less than the second predetermined time, the control unit 32 of the application server device 30 performs processing in step S52 to correct the correction value ΔH of the outdoor air cooling start condition, for example, by the following formula (4). Formula (4) is an example in which the second predetermined time is "30 minutes." In formula (4), x is the duration. Note that formula (4) is only an example, and the correction value ΔH may be corrected in, for example, four stages according to the duration, in addition to formula (4).

[0085]

number

[0086] In step S54, the control unit 32 of the application server device 30 determines whether the correction value ΔH corrected in step S52 is smaller than a constant B (e.g., −40 to −30, etc.). The constant B may be calculated from, for example, the temperature and humidity of the indoor environment and the outdoor environment at which outdoor air cooling is considered to be practically possible.

[0087] If the correction value ΔH is smaller than the constant B, the control unit 32 of the application server device 30 performs the process of step S55 to reset the correction value ΔH of the outdoor air cooling start condition to the initial value. If the correction value ΔH is not smaller than the constant B, the control unit 32 of the application server device 30 performs the process of step S56.

[0088] In step S56, the control unit 32 of the application server device 30 performs control not to start the next outdoor air cooling operation for a third predetermined time after the outdoor air cooling operation termination condition of the outdoor air cooling operation is satisfied and the outdoor air cooling operation is terminated.

[0089] In this embodiment, an example has been described in which the duration of each outdoor air cooling operation is used, but the duration of the most recent outdoor air cooling operation, or the average duration of each of a plurality of past outdoor air cooling operations may be used. The processes in steps S54 and S55 are performed to prevent outdoor air cooling from not being started as a result of the outdoor air cooling start condition being corrected.

[0090] As described above, according to the air conditioning system 1 of this embodiment, by correcting the outdoor air cooling start conditions depending on the duration of outdoor air cooling, outdoor air cooling operation can be started in response to the internal load that differs for each property, and an air conditioning system, outdoor air cooling control method, and information processing device can be provided that realizes outdoor air cooling that cools the room comfortably.

[0091] [Effect] The present embodiment is an air conditioning system having a control unit, and the control unit acquires the duration of outdoor air cooling operation, which is performed by driving a ventilation device to take in outdoor air and cool the room, from when the outdoor air cooling operation is started to when the outdoor air cooling operation is ended, and corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation. The control unit is, for example, the control unit 32. The air conditioning system is, for example, the air conditioning system 1.

[0092] According to this embodiment, the duration of outdoor air cooling operation can be used to determine whether the room was comfortably cooled by outdoor air cooling, and therefore the outdoor air cooling start conditions are corrected according to the duration of outdoor air cooling operation, providing an air conditioning system that comfortably cools the room using outdoor air cooling operation while suppressing repeated switching between outdoor air cooling and cooling by the air conditioner.

[0093] In addition, in this embodiment, the control unit acquires the duration of one outdoor air cooling operation or the duration of each of multiple outdoor air cooling operations, and corrects the outdoor air cooling start condition according to the duration of one outdoor air cooling operation or the duration of each of multiple outdoor air cooling operations.

[0094] According to this embodiment, the outdoor air cooling start condition can be corrected according to the duration of one outdoor air cooling operation, or the duration of each of multiple outdoor air cooling operations.

[0095] Furthermore, in this embodiment, if the duration of the outdoor air cooling operation is longer than the first predetermined time, the control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation becomes more likely to be started.

[0096] According to this embodiment, if the duration of outdoor air cooling operation is longer than a first predetermined time, it is determined that the room has been comfortably cooled by outdoor air cooling, and the outdoor air cooling start conditions are corrected so that outdoor air cooling operation is more likely to be started, making it easier to start outdoor air cooling when there is a high possibility that outdoor air cooling can be continued.

[0097] Furthermore, in this embodiment, if the duration of the outdoor air cooling operation is shorter than the second predetermined time, the control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation becomes less likely to be started.

[0098] According to this embodiment, if the duration of outdoor air cooling operation is shorter than a second specified time, it is determined that the outdoor air cooling has not been able to comfortably cool the room, and the outdoor air cooling start conditions can be corrected so that it becomes more difficult to start outdoor air cooling operation, so that it is possible to make it more difficult to start outdoor air cooling when there is little possibility that outdoor air cooling can be continued.

[0099] Furthermore, in this embodiment, the control unit corrects the outdoor air cooling start condition such that the correction range is larger as the duration of the outdoor air cooling operation is shorter.

[0100] According to this embodiment, the shorter the duration of outdoor air cooling operation, the more it is determined that outdoor air cooling has not been able to cool the room comfortably, and the outdoor air cooling start conditions can be corrected so that outdoor air cooling operation is less likely to be started, making it more difficult to start outdoor air cooling when there is little possibility that outdoor air cooling can be continued.

[0101] In the present embodiment, the outdoor air cooling start condition is defined by the enthalpy difference between the indoors and outdoors and a correction value, and the correction value is a correction value for correcting the enthalpy difference between the indoors and outdoors of the outdoor air cooling start condition. The outdoor air cooling start condition may be further defined by the outdoor air temperature, the relationship between the outdoor air temperature and the set temperature, the relationship between the indoor temperature and the set temperature, the indoor temperature, or the like.

[0102] According to this embodiment, an air conditioning system can be provided that corrects the outdoor air cooling start condition, which is defined by the enthalpy difference between indoors and outdoors and a correction value, depending on the duration of the outdoor air cooling operation, and comfortably cools the room using outdoor air cooling operation.

[0103] Furthermore, in this embodiment, after the outdoor air cooling end condition is satisfied and the outdoor air cooling operation is ended, the control unit does not start the outdoor air cooling operation for a third predetermined time.

[0104] According to this embodiment, after the outdoor air cooling operation termination condition is satisfied and the outdoor air cooling operation is terminated, the outdoor air cooling operation is controlled not to be started until a third specified time has elapsed, thereby preventing hunting, which is the repeated starting and ending of the outdoor air cooling operation.

[0105] Furthermore, in this embodiment, when a fourth predetermined time has elapsed since the last outdoor air cooling operation, the control unit resets the outdoor air cooling start condition to the initial value.

[0106] According to this embodiment, when a fourth predetermined time has elapsed since the end of the last outdoor air cooling operation, the outdoor air cooling start condition is returned to the initial value, thereby making it possible to prevent the outdoor air cooling operation from not being started.

[0107] Furthermore, in this embodiment, when the correction value of the outdoor air cooling start condition becomes smaller than a predetermined value, the control unit returns the correction value of the outdoor air cooling start condition to the initial value.

[0108] According to this embodiment, by returning the correction value of the outdoor air cooling start condition that has become smaller than a predetermined value to the initial value, it is possible to prevent the outdoor air cooling operation from not being started.

[0109] Furthermore, this embodiment is an outdoor air cooling control method executed by an air conditioning system having a control unit, which obtains the duration of outdoor air cooling operation, in which outdoor air is taken in by driving a ventilation device to cool the room, from the start of the operation to the end of the outdoor air cooling operation, and corrects the outdoor air cooling start condition according to the duration of the outdoor air cooling operation.

[0110] According to this embodiment, the duration of outdoor air cooling operation can be used to determine whether the room was comfortably cooled by outdoor air cooling, and therefore an outdoor air cooling control method can be provided in which the outdoor air cooling start conditions are corrected according to the duration of outdoor air cooling operation, and the room is comfortably cooled by outdoor air cooling operation.

[0111] Furthermore, this embodiment is an information processing device that has a control unit and controls an air conditioning system, and the control unit obtains the duration of outdoor air cooling operation, which takes in outside air by driving a ventilation device to cool the room, from the start of the operation to the end of the outdoor air cooling operation, and corrects the outdoor air cooling start conditions according to the duration of the outdoor air cooling operation.

[0112] According to this embodiment, the duration of outdoor air cooling operation can be used to determine whether the room was able to be comfortably cooled by outdoor air cooling, so an information processing device can be provided that corrects the outdoor air cooling start conditions according to the duration of outdoor air cooling operation and comfortably cools the room using outdoor air cooling operation.

[0113] Although the present embodiment has been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. [Explanation of symbols]

[0114] 1. Air conditioning system 10. Building 12 Outdoor unit 14 Ventilation equipment 16 Indoor unit 18 Edge Device 30 Application server device 32 Control section 40 API Gateway Server Device 50 Network

Claims

1. An air conditioning system having a control unit, The control unit is Obtaining a duration of an outdoor air cooling operation from a start of the outdoor air cooling operation in which outdoor air is taken in to cool the room by driving a ventilation device to a finish of the outdoor air cooling operation; The outdoor air cooling start condition is corrected according to the duration of the outdoor air cooling operation. Air conditioning system.

2. The control unit is Obtaining a duration of one outdoor air cooling operation or a duration of each of a plurality of outdoor air cooling operations; The outdoor air cooling start condition is corrected according to the duration of one outdoor air cooling operation or the duration of each of a plurality of outdoor air cooling operations.

2. The air conditioning system of claim 1.

3. The control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation is more likely to be started if the duration of the outdoor air cooling operation is longer than a first predetermined time.

3. An air conditioning system according to claim 1 or 2.

4. The control unit corrects the outdoor air cooling start condition so that the outdoor air cooling operation is less likely to be started if the duration of the outdoor air cooling operation is shorter than a second predetermined time.

3. An air conditioning system according to claim 1 or 2.

5. The control unit corrects the outdoor air cooling start condition such that the correction range of the outdoor air cooling start condition becomes larger as the duration of the outdoor air cooling operation becomes shorter.

3. An air conditioning system according to claim 1 or 2.

6. The outdoor air cooling start condition is defined by an indoor / outdoor enthalpy difference and a correction value, The correction value is a correction value for correcting the enthalpy difference between the indoor and outdoor of the outdoor air cooling start condition.

3. An air conditioning system according to claim 1 or 2.

7. The control unit does not start the outdoor air cooling operation for a third predetermined time after an outdoor air cooling end condition is satisfied and the outdoor air cooling operation is ended.

3. An air conditioning system according to claim 1 or 2.

8. The control unit returns the outdoor air cooling start condition to an initial value when a fourth predetermined time has elapsed since the last outdoor air cooling operation.

3. An air conditioning system according to claim 1 or 2.

9. When the correction value of the outdoor air cooling start condition becomes smaller than a predetermined value, the control unit returns the correction value of the outdoor air cooling start condition to an initial value.

7. The air conditioning system of claim 6.

10. An outdoor air cooling control method executed by an air conditioning system having a control unit, Obtaining a duration of an outdoor air cooling operation from a start of the outdoor air cooling operation in which outdoor air is taken in to cool the room by driving a ventilation device to a finish of the outdoor air cooling operation; The outdoor air cooling start condition is corrected according to the duration of the outdoor air cooling operation. Outdoor air cooling control method.

11. An information processing device having a control unit and controlling an air conditioning system, The control unit is Obtaining a duration of an outdoor air cooling operation from a start of the outdoor air cooling operation in which outdoor air is taken in to cool the room by driving a ventilation device to a finish of the outdoor air cooling operation; The outdoor air cooling start condition is corrected according to the duration of the outdoor air cooling operation. Information processing device.

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