Whole building air conditioning system and method for controlling the same

Abstract

To provide a whole building air conditioning system enabling improvement in a living room temperature control performance by correcting a living room temperature measured by a temperature sensor disposed on a living room wall surface so as to come closer to a temperature in a living room center space.SOLUTION: A whole building air conditioning system serves for air-conditioning a plurality of living rooms, and includes: a duct transporter including a chamber unit provided with an air conditioner 13, and a fan 24; and a controller 18 controlling a first temperature sensor 17a, a second temperature sensor 17b, a third temperature sensor 17c, the air conditioner 13 and / or the fan 24. The controller 18 includes: a target temperature storage unit 36a; a first input unit 37a acquiring a living room temperature; a second input unit 37b acquiring a return air temperature; a third input unit 37c acquiring an outside air temperature; a temperature correction unit 37d correcting the living room temperature on the basis of a difference between the outside air temperature and the return air temperature; and a temperature control unit 37e controlling the air conditioner 13 and / or the fan 24 on the basis of a difference between the corrected living room temperature and the target temperature.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a central air conditioning system and a control method thereof. [Background technology]

[0002] The following Patent Document 1 describes an air conditioning system that uses a single heat source including at least one air conditioner to condition multiple rooms in a building. This system measures the temperature of each room using a temperature sensor in each room. The air conditioning system is controlled so that the room temperature approaches a target temperature set by the user. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-004682 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, temperature sensors for measuring the temperature of each room are fixed to the wall surface, such as an exterior wall or a partition wall, that separates the room. Because such temperature sensors measure the air temperature around the wall surface, they cannot accurately measure the temperature in the central space of the room where more occupants are present. As a result, there is room for improvement in controlling the room temperature to a target temperature.

[0005] The present invention was devised in consideration of the above-mentioned problems, and its main purpose is to provide a whole-building air conditioning system that can correct the room temperature measured by a temperature sensor installed on the wall of the room so that it approaches the temperature in the central space of the room, thereby improving room temperature controllability. [Means for solving the problem]

[0006] The present invention is a whole-building air-conditioning system for conditioning a plurality of rooms with a single heat source, comprising: a chamber unit having an air conditioner therein for generating conditioned air; a duct conveying section including a plurality of ducts and fans for conveying the conditioned air in the chamber unit to each of the rooms; a return path for returning return air that has passed through the plurality of rooms to the chamber unit; a first temperature sensor provided on a wall surface of each of the plurality of rooms; a second temperature sensor for measuring the temperature of the return air; and a third temperature sensor for measuring the outside air temperature. and a control unit that controls the air conditioner, wherein the control unit includes a target temperature memory unit that stores a target temperature that has been preset for each of the plurality of rooms, a first input unit that acquires the room temperature measured by the first temperature sensor, a second input unit that acquires the return air temperature measured by the second temperature sensor, a third input unit that acquires the outside air temperature measured by the third temperature sensor, a temperature correction unit that corrects the room temperature based on the difference between the outside air temperature and the return air temperature, and a temperature control unit that controls the air conditioner and / or the fan based on the difference between the corrected room temperature and the target temperature. [Effects of the Invention]

[0007] By adopting the above-mentioned configuration, the whole-building air conditioning system of the present invention can correct the room temperature measured by a temperature sensor installed on the wall of the room to approach the temperature in the central space of the room, thereby improving room temperature controllability. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view showing an example of a building equipped with a central air conditioning system. [Figure 2] FIG. 2 is an enlarged view of the central air conditioning system of FIG. 1. [Figure 3] FIG. 2 is a conceptual diagram illustrating an example of the configuration of a control unit. [Figure 4] 10 is a flowchart showing an example of a processing procedure of a control method for a central air-conditioning system. [Figure 5] A flowchart showing an example of a processing procedure of a room temperature correction method for a central air conditioning system. [Figure 6] 10 is a flowchart showing an example of a processing procedure of a temperature acquisition process of a central air-conditioning system. [Figure 7] 10 is a graph showing the relationship between the difference between the outside air temperature and the return air temperature and the correction value for the room temperature for each of a plurality of rooms when the air conditioner is in heating operation. [Figure 8] 10 is a graph showing the relationship between the difference between the outside air temperature and the return air temperature and the correction value for the room temperature for each of a plurality of air volume notches during heating operation of the air conditioner. [Figure 9] 10 is a graph showing the relationship between the difference between the outside air temperature and the return air temperature and the correction value for the room temperature for each of a plurality of rooms when the air conditioner is in cooling operation. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present invention will now be described with reference to the drawings. 1 is a cross-sectional view showing an example of a building 2 equipped with a central air-conditioning system 1 according to this embodiment. It should be noted that the drawings are intended to enhance understanding of the invention, and include exaggerated representations, and that the scales and the like do not strictly match between the drawings.

[0010] [building] Although a house is exemplified as the building 2, it may be, for example, a building, etc. The building 2 of this embodiment is configured to include an underfloor space 3 and an above-floor space 4.

[0011] The underfloor space 3 is a space surrounded by a foundation 5, the ground 6, and the first floor 7. In this embodiment, the foundation 5 is surrounded by insulation material 8, thereby insulating the underfloor space 3. The foundation 5 has an opening 9 for taking in outside air A1. The outside air A1 taken in through the opening 9 exchanges heat with underground heat, which changes little in temperature throughout the year, via the ground 6. As a result, the underfloor space 3 can store underfloor air (outside air) A2, which is relatively cooler in the summer and relatively warmer in the winter than the outside air A1.

[0012] The above-floor space 4 is a space provided above the under-floor space 3 via a floor 7. The above-floor space 4 of this embodiment includes a plurality of living rooms 10 and a non-living room 11.

[0013] The living room 10 is a space used for living, gathering, entertainment, etc., such as a living room, bedroom, or children's room. In this embodiment, the multiple living rooms 10 are shown as a first living room 10a and a second living room 10b on the first floor, and a third living room 10c and a fourth living room 10d on the second floor. However, the living rooms 10 are not limited to this configuration, and may be composed of only the first living room 10a and the second living room 10b on the first floor, or may include living rooms on other floors.

[0014] Non-habitable rooms 11 are spaces such as corridors, halls, stairs, entrances, washrooms, bathrooms, toilets, etc. In Fig. 1, first floor corridor 11a, second floor corridor 11b, and second floor hall 11c are shown as representative non-habitable rooms 11.

[0015] [Whole building air conditioning system] FIG. 2 is an enlarged view of the central air conditioning system 1 of FIG. 1. The central air conditioning system 1 of this embodiment is a central air conditioning type. The central air conditioning system 1 is for conditioning multiple rooms 10 shown in FIG. 1 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor) using a single heat source 12. The heat source 12 of this embodiment is composed of an air conditioner (air conditioner) 13 for generating conditioned air (hereinafter sometimes referred to as "conditioned air") A3. The heat source 12 of this embodiment is composed of a single air conditioner 13, but may also be composed of multiple air conditioners 13.

[0016] As shown in Figure 1, the whole-building air conditioning system 1 of this embodiment includes a chamber unit 14, a duct conveying section 15, a return path 16, a first temperature sensor 17a, a second temperature sensor 17b, a third temperature sensor 17c, and a control section 18.

[0017] [Chamber unit] As shown in Fig. 2, the chamber unit 14 of this embodiment is formed in a box shape with a space inside. The above-mentioned air conditioner 13 is provided inside the chamber unit 14. The chamber unit 14 is installed, for example, in the non-occupied room 11 (the hall 11c on the second floor) shown in Fig. 1.

[0018] The chamber unit 14 of this embodiment is provided with an outside air intake port (not shown) for supplying underfloor air A2 (outside air A1) to the inside. The underfloor air A2 (outside air A1) of this embodiment is taken in from the underfloor space 3 via the duct 19 and the outside air supply fan 20 shown in FIG. 1. The outside air A1 may also be taken in directly from the outdoors 38.

[0019] The chamber unit 14 of this embodiment is provided with an air intake port 21 for supplying air A4 from the above-floor space 4 (in this example, air circulated through the multiple rooms 10) to the interior. The air intake port 21 of this embodiment is formed, for example, in the upper part of the chamber unit 14. This air intake port 21 is configured to be able to communicate with the above-floor space 4 (second-floor corridor 11b and second-floor hall 11c) shown in FIG. 1. Therefore, air (return air) A4 from the above-floor space 4 can enter the chamber unit 14 of this embodiment via the air intake port 21.

[0020] [Air conditioner] The air conditioner 13 is, for example, a typical split-type air conditioner for home use. Therefore, the air conditioner 13 includes, as a set, an indoor unit 13a and an outdoor unit (not shown) installed outside the building 2 shown in Fig. 1. In this embodiment, the indoor unit 13a is disposed inside the chamber unit 14.

[0021] The indoor unit 13a has an air inlet (not shown) and an air outlet (not shown). The air inlet is for taking in air into a heat exchanger (not shown) inside the indoor unit 13a. On the other hand, the air outlet is for discharging conditioned air A3 through the heat exchanger. The set temperature and air volume of the air conditioner 13 are controlled, for example, by a control unit 18 (shown in FIG. 1) described below. In this embodiment, the conditioned air A3 is purified by a filter 22 provided in the chamber unit 14, but this is not limited to this.

[0022] [Duct conveying section] The duct transfer section 15 is provided to transfer the conditioned air A3 in the chamber unit 14 to each of the plurality of rooms 10 shown in FIG. 1. The duct transfer section 15 includes a plurality of ducts 23 and a fan 24. Furthermore, the duct transfer section 15 of this embodiment includes a damper 25. Note that the duct transfer section 15 is not limited to this configuration, and for example, the damper 25 may be omitted or other devices may be added.

[0023] The multiple ducts 23 are for communicating (connecting) the chamber unit 14 with each of the multiple living rooms 10 shown in Fig. 1. The multiple ducts 23 in this embodiment are configured to include a first duct 23a and a second duct 23b. Note that the multiple ducts 23 may be configured to include ducts other than the first duct 23a and the second duct 23b.

[0024] The first duct 23a in this embodiment connects the chamber unit 14 to the first living room 10a and the second living room 10b on the first floor shown in Fig. 1. The first duct 23a in this embodiment is provided with a branch section 26 between the chamber unit 14 and the first living room 10a and the second living room 10b on the first floor. This allows the first duct 23a to communicate with the chamber unit 14 and the first living room 10a and the second living room 10b on the first floor.

[0025] The second duct 23b of this embodiment connects the chamber unit 14 to the third living room 10c and the fourth living room 10d on the second floor, respectively, shown in Fig. 1. The second duct 23b of this embodiment is provided with a branch section 26 between the chamber unit 14 and the third living room 10c on the second floor and the fourth living room 10d on the second floor. This allows the second duct 23b to communicate with the chamber unit 14 and the third living room 10c and the fourth living room 10d on the second floor.

[0026] The fan 24 is for sending the conditioned air A3 in the chamber unit 14 to the plurality of rooms 10 shown in FIG. 1 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). The fan 24 is connected to the duct 23. The fan 24 in this embodiment is configured to include a first fan 24a and a second fan 24b. The fan 24 may be configured with either the first fan 24a or the second fan 24b, or may be configured with three or more fans.

[0027] The first fan 24a in this embodiment is for sending (supplying) the conditioned air A3 to the first living room 10a and the second living room 10b on the first floor shown in Fig. 1. The first fan 24a in this embodiment is connected to the first duct 23a. This allows the first fan 24a to send (supply) the conditioned air A3 to the first living room 10a and the second living room 10b on the first floor via the first duct 23a.

[0028] The second fan 24b in this embodiment is for sending (supplying) the conditioned air A3 to the third living room 10c and the fourth living room 10d on the second floor shown in Fig. 1. The second fan 24b in this embodiment is connected to the second duct 23b. This allows the second fan 24b to send (supply) the conditioned air A3 to the third living room 10c and the fourth living room 10d on the second floor via the second duct 23b.

[0029] The airflow rates of the fans 24 (first fan 24a and second fan 24b in this example) are controlled by a control unit 18 (shown in FIG. 1) described below, based on, for example, the ventilation rate and air conditioning load required for the building 2 shown in FIG. 1. The fans 24 in this embodiment are configured as constant airflow fans whose rotation speeds are controlled to maintain a constant airflow rate, but are not limited to such constant airflow fans.

[0030] The fans 24 of this embodiment (in this example, the first fan 24a and the second fan 24b) can be operated based on one of a plurality of airflow notches, each set to a different airflow rate. The airflow notches of this embodiment are set to three levels, including, for example, a small notch, a medium notch, and a large notch. Of these airflow notches, the small notch is set to the smallest airflow rate. On the other hand, the large notch is set to the largest airflow rate. For example, an airflow rate capable of controlling the temperature of each room 10 shown in FIG. 1 can be set for each airflow notch. Note that the airflow notches are not limited to this embodiment, and some of the small notches to the large notches may be omitted, or other airflow notches may be included.

[0031] The damper 25 is for adjusting the air volume of the conditioned air A3 in each of the multiple living rooms 10 shown in FIG. 1 (in this example, the first living room 10a and the second living room 10b on the first floor, and the third living room 10c and the fourth living room 10d on the second floor). The damper 25 is connected to the duct 23. In this embodiment, the damper 25 is provided in each living room 10 shown in FIG. 1. This allows the damper 25 to adjust the air volume of the conditioned air A3 for each living room 10.

[0032] The damper 25 of this embodiment can increase the air volume of the conditioned air A3 depending on the opening degree (opening area) of the damper 25. The opening degree of the damper 25 is controlled, for example, by a control unit 18 (shown in FIG. 1) described below. Note that a plurality of dampers 25 may be provided in one living room 10 shown in FIG. 1.

[0033] [Return Route] 1, the return path 16 is for returning the return air A4 that has passed through the multiple living rooms 10 to the chamber unit 14. The return path 16 in this embodiment is made up of non-living rooms 11 (in this example, including the second floor corridor 11b, the second floor hall 11c, the first floor corridor 11a and stairs (not shown)) and a gap 27 (an undercut provided in the door 28), but is not particularly limited thereto, and some spaces in the non-living rooms 11 may be omitted, or other spaces may be included.

[0034] In the return path 16, return air A4, which is the conditioned air A3 that has passed through the occupied room 10, passes through the gap 27 shown in Fig. 1 and the non-occupied room 11, and is taken into the chamber unit 14 from the air supply port 21 shown in Fig. 2. The return air A4 taken in in this way is taken into a heat exchanger (not shown) inside the indoor unit 13a from an intake port (not shown) of the indoor unit 13a shown in Fig. 2.

[0035] [First temperature sensor] As shown in FIG. 1, the first temperature sensors 17a are used to measure the room temperatures of the multiple rooms 10. In this embodiment, known temperature sensors are used as the first temperature sensors 17a. These first temperature sensors 17a are connected to a control unit 18, which will be described later. As a result, the room temperatures measured by the first temperature sensors 17a are transmitted to the control unit 18.

[0036] The first temperature sensor 17a in this embodiment is provided on each of the room walls 29 in a plurality of rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). The room walls 29 in this embodiment include wall surfaces 29a and 29d of the exterior wall Wo, a wall surface 29b of the first partition wall Wi1, and a wall surface 29c of the second partition wall Wi2. The exterior wall Wo serves to separate the rooms 10 from the outdoors 38. The first partition wall Wi1 serves to separate the room 10 (the second room 10b on the first floor) from the non-residential room 11 (the hallway 11a on the first floor). The second partition wall Wi2 serves to separate the room 10 (the third room 10c on the second floor) from the non-residential room 11 (the hallway 11c on the second floor).

[0037] In this embodiment, a first temperature sensor 17a is provided on a wall surface 29a of an exterior wall Wo provided in the first living room 10a on the first floor and on a wall surface 29b of a first partition wall Wi1 provided in the second living room 10b on the first floor. Furthermore, in this embodiment, a first temperature sensor 17a is provided on a wall surface 29c of a second partition wall Wi2 provided in the third living room 10c on the second floor and on a wall surface 29d of an exterior wall Wo provided in the fourth living room 10d on the second floor.

[0038] In this embodiment, by providing first temperature sensor 17a on living room wall surface 29, it is possible to effectively utilize the central space (the space inside living room wall surface 29) where more residents stay in each of multiple living rooms 10 (first living room 10a on the first floor to fourth living room 10d on the second floor). However, because first temperature sensor 17a measures the room temperature around living room wall surface 29, if there is a bias in the air temperature distribution within each living room 10, the measurement value of first temperature sensor 17a may differ from the actual room temperature in the central space. Furthermore, first temperature sensor 17a may be affected by the temperature of adjacent outside air A1 through living room wall surface 29 and the temperatures of living rooms 10 and non-occupied rooms 11, which may further diverge from the measurement value of first temperature sensor 17a and the actual room temperature in the central space. For this reason, first temperature sensor 17a may not be able to accurately measure the room temperature in the central space of the room. Therefore, in order to control air conditioner 13 and fan 24 shown in Figure 2 based on the room temperature in the central space of the room, it is preferable to correct the room temperature measured by first temperature sensor 17a so that it approaches the room temperature in the central space of the room.

[0039] [Second temperature sensor] 1, the second temperature sensor 17b is for measuring the temperature of the return air A4 (air from the plurality of rooms 10). A known temperature sensor is used as the second temperature sensor 17b in this embodiment.

[0040] The second temperature sensor 17b in this embodiment is provided in the air supply port 21 (shown in FIG. 2) of the chamber unit 14 for taking in the return air A4, but is not limited to this configuration and may be provided in the air intake port (not shown) of the indoor unit 13a, etc. The second temperature sensor 17b in this embodiment is connected to the control unit 18, which will be described later. As a result, the temperature of the return air A4 measured by the second temperature sensor 17b is transmitted to the control unit 18.

[0041] [Third temperature sensor] The third temperature sensor 17c is for measuring the outside air temperature, and a known temperature sensor is used as the third temperature sensor 17c in this embodiment.

[0042] In this embodiment, the third temperature sensor 17c is provided in the opening 9 of the foundation 5, but is not limited to this configuration and may be provided in, for example, an outdoor unit (not shown). The third temperature sensor 17c in this embodiment is connected to the control unit 18, which will be described later. As a result, the outside air temperature measured by the third temperature sensor 17c is transmitted to the control unit 18.

[0043] [Control Unit] The control unit 18 is for controlling the air conditioner 13 and / or the fan 24 shown in Fig. 2. The control unit 18 of this embodiment is configured by a computer, and is installed, for example, on a partition wall of the living room 10. Fig. 3 is a conceptual diagram showing an example of the configuration of the control unit 18.

[0044] The control unit 18 is configured to include, for example, a calculation unit (CPU) 31, a storage unit 32 for storing processing procedures and the like, and a working memory 33 for reading the processing procedures and the like from the storage unit 32. An input unit 34 and an output unit 35 are connected to the control unit 18 (calculation unit 31).

[0045] [Input section] The input unit 34 of this embodiment is configured with operation buttons, a touch panel, etc. provided on the housing of the control unit 18 shown in Fig. 1. By means of such input unit 34, for example, information (signals) input by a user (resident) or the like can be transmitted to the control unit 18.

[0046] The information input to the input unit 34 includes, for example, the start and stop of the air conditioning operation (heating operation or cooling operation) of the air conditioner 13. Furthermore, the input information includes the target temperature of each of the rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). The target temperature in this embodiment is the temperature of each room 10 that should be achieved and maintained by air conditioning by the central air conditioning system 1 (based on the control method of the central air conditioning system 1).

[0047] [Output section] The output unit 35 of this embodiment is configured as a display provided on the housing of the control unit 18 shown in Fig. 1. Such an output unit 35 receives signals (data) from the control unit 18 and can display, for example, the operating status of the central air-conditioning system 1. Examples of the operating status include the operating status of the air conditioner 13 (for example, heating operation or cooling operation) and the target temperature and room temperature of each of the multiple rooms 10.

[0048] [Calculation section] 3, the calculation unit 31 of this embodiment is configured by, for example, a CPU (Central Processing Unit). The calculation unit 31 (control unit 18) of this embodiment is communicatively connected to the air conditioner 13. This allows the calculation unit 31 to control the operation of the air conditioner 13 (for example, changing the set temperature and the air volume of the indoor unit fan). Furthermore, data related to the operating status of the air conditioner 13 can be received by the calculation unit 31.

[0049] The calculation unit 31 (control unit 18) of this embodiment is communicatively connected to the fans 24 (first fan 24a and second fan 24b) and the outside air supply fan 20. This allows the calculation unit 31 to control the operation of the fans 24 and the outside air supply fan 20 (for example, switching of air volume notches). Furthermore, the calculation unit 31 can receive signals from the fan 24 (data such as the currently operating air volume notch and rotation speed).

[0050] The calculation unit 31 (control unit 18) of this embodiment is connected to be able to communicate with the damper 25. This allows the calculation unit 31 to control the damper 25 (for example, the opening degree of the damper 25).

[0051] The calculation unit 31 of this embodiment is communicatively connected to the first temperature sensor 17a, thereby allowing the calculation unit 31 to receive a signal from the first temperature sensor 17a (in this example, measurement data on the living room temperatures of the first living room 10a and the second living room 10b on the first floor, and the third living room 10c and the fourth living room 10d on the second floor).

[0052] The calculation unit 31 of this embodiment is communicatively connected to the second temperature sensor 17b, whereby the calculation unit 31 receives a signal from the second temperature sensor 17b (measurement data of the temperature of the return air A4 (air from the multiple rooms 10) in this example).

[0053] The calculation unit 31 of this embodiment is communicatively connected to the third temperature sensor 17c, whereby the calculation unit 31 receives a signal from the third temperature sensor 17c (measurement data of the outside air temperature in this example).

[0054] [Storage] The storage unit 32 of this embodiment is, for example, a non-volatile information storage device. The storage unit 32 includes a data unit 36 ​​and a program unit 37.

[0055] [Data section] The data unit 36 ​​of this embodiment is for storing the calculation results and the like obtained by the calculation unit 31. The data unit 36 ​​of this embodiment includes a target temperature storage unit 36a and a correction data storage unit 36b. Furthermore, the data unit 36 ​​of this embodiment includes a measured temperature storage unit 36c and a correction temperature storage unit 36d. Note that the data unit 36 ​​is not limited to this example, and may further include, for example, a storage unit for storing other information.

[0056] The target temperature storage unit 36a is for storing a target temperature that is set in advance for each of the multiple rooms 10 shown in Fig. 1. This target temperature is input by a user (resident) or the like via the input unit 34, for example.

[0057] The correction data memory unit 36b is for storing (identifying) the relationship between the difference between the outside air temperature and the return air temperature and the correction value of the room temperature based on this difference. As described above, this relationship is used to correct the room temperature measured by the first temperature sensor 17a to approach the room temperature in the central space of the room when the first temperature sensor 17a cannot accurately measure the room temperature in the central space of the room due to uneven air temperature distribution in each room 10 and the influence of the temperatures of the outside air A1, the living room 10, and the non-occupied rooms 11 adjacent to each other through the room wall surface 29.

[0058] In this embodiment, the above relationship can be stored (specified) in advance in the correction data storage unit 36b by, for example, a serviceman (engineer) who installs the central air-conditioning system 1 in the building 2. Note that, before the air conditioner 13 (shown in FIG. 2) starts operating, the above relationship may also be stored (specified) in the correction data storage unit 36b by, for example, a user (resident). Details of this relationship will be explained later in the control method for the central air-conditioning system 1.

[0059] [Program section] The program unit 37 is a program (computer program) for causing the calculation unit 31 (control unit 18) to execute the control method and room temperature correction method for the central air-conditioning system 1 of this embodiment. When executed by the calculation unit 31, the program unit (program) 37 causes the control unit 18 to function as a specific means.

[0060] The program unit 37 of this embodiment includes a first input unit 37a, a second input unit 37b, a third input unit 37c, a temperature correction unit 37d, a temperature control unit 37e, and a fan drive unit 37f. Furthermore, the program unit 37 of this embodiment includes an air conditioning start unit 37g, a target temperature input unit 37h, an end determination unit 37i, and an air conditioning end unit 37j. Note that the program unit 37 is not limited to this configuration and may include other programs. The functions of these program units 37 will be explained in the respective steps of the control method for the central air conditioning system 1 and the room temperature correction method described below.

[0061] [Control method for central air conditioning system (first embodiment)] Next, a control method for the central air-conditioning system 1 of this embodiment (hereinafter sometimes referred to as the "control method") will be described. FIG. 4 is a flowchart showing an example of the processing procedure of the control method for the central air-conditioning system 1. In this embodiment, the room temperature correction method for the central air-conditioning system 1 (hereinafter sometimes referred to as the "room temperature correction method") is carried out in a room temperature correction step S3, which will be described later.

[0062] [Start air conditioning] In the control method of this embodiment, first, air conditioning operation is started (step S1). In step S1 of this embodiment, operation of the air conditioner 13 and fan 24 shown in Fig. 2 and the outside air supply fan 20 shown in Fig. 1 is started. Note that if the whole-building air-conditioning system 1 is not provided with an outside air supply fan 20, starting operation of the outside air supply fan 20 may be omitted.

[0063] In step S1 of this embodiment, an air-conditioning start unit 37g and a fan drive unit 37f included in the program unit 37 shown in Fig. 3 are loaded into the work memory 33. The air-conditioning start unit 37g is a program for starting air-conditioning operation (in this example, operation of the air conditioner 13 and the outside air supply fan 20). The fan drive unit 37f is a program for operating the fan 24 at a plurality of predetermined air volume notches. Execution of the air-conditioning start unit 37g and the fan drive unit 37f by the calculation unit 31 causes the control unit 18 to function as a means for starting air-conditioning operation.

[0064] In step S1 of this embodiment, the air conditioning starting unit 37g (control unit 18) starts the operation of the outside air supply fan 20 shown in Fig. 1 and the air conditioning operation (heating operation or cooling operation) of the air conditioner 13 shown in Fig. 2. Furthermore, the fan driving unit 37f (control unit 18) starts the operation of the fans 24 (in this example, the first fan 24a and the second fan 24b).

[0065] Switching between heating operation and cooling operation may be performed, for example, by a user (resident) inputting information into the input unit 34, or may be performed by the air conditioning start unit 37g based on the temperature of the outside air A1, etc. The set temperature (initial set temperature) of the air conditioner 13 is set as appropriate, for example, based on the target temperatures set for each of the multiple rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor), the room temperatures, etc. The airflow rate of the indoor unit fan (not shown) is selected as appropriate, for example, depending on the operating status (air conditioning load) of the air conditioner 13, etc.

[0066] In step S1 of this embodiment, operation of the outside air supply fan 20 is started, thereby supplying underfloor air A2 (outside air A1) into the chamber unit 14. The air volume of the outside air supply fan 20 is set appropriately based on, for example, the number of ventilation cycles required for the building 2.

[0067] In step S1 of this embodiment, air conditioning operation (heating operation or cooling operation) of the air conditioner 13 is started, and a mixture of underfloor air A2 (outside air A1) supplied by operation of the outside air supply fan 20 and return air A4 (air from the plurality of rooms 10) is drawn into the indoor unit 13a. Then, conditioned air A3 that has undergone heat exchange in the indoor unit 13a is discharged into the chamber unit 14. As a result, conditioned air A3 is generated inside the chamber unit 14.

[0068] In step S1 of this embodiment, operation of the fans 24 (in this example, the first fan 24a and the second fan 24b) is started, and the conditioned air A3 generated inside the chamber unit 14 is transported via the ducts 23 (the first duct 23a and the second duct 23b) to each of the multiple rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). The air volume notch of the fan 24 is appropriately selected depending on, for example, the ventilation rate required for the building 2 and the operating status (air conditioning load) of the air conditioner 13.

[0069] In step S1 of this embodiment, the return air A4 that has passed through the multiple rooms 10 is returned to the chamber unit 14 via the return path 16. As a result, in step S1, the multiple rooms 10 can be ventilated and air-conditioned while circulating the air (return air A4) within the building 2.

[0070] [Store the target room temperature] Next, in the control method of this embodiment, the target temperatures for the living rooms 10 shown in Fig. 1 are stored (step S2). In step S2 of this embodiment, first, a target temperature input unit 37h included in the program unit 37 shown in Fig. 3 is loaded into the working memory 33. The target temperature input unit 37h is a program for obtaining the target temperatures for the living rooms 10 shown in Fig. 1 (in this example, the first living room 10a and the second living room 10b on the first floor, and the third living room 10c and the fourth living room 10d on the second floor). Execution of this target temperature input unit 37h by the calculation unit 31 causes the control unit 18 to function as a means for obtaining the target temperatures.

[0071] As described above, in this embodiment, the target temperatures for each of the multiple rooms 10 shown in Fig. 1 (in this example, the first room 10a and second room 10b on the first floor, and the third room 10c and fourth room 10d on the second floor) are input by a user (resident) or the like to the input unit 34. These target temperatures (signals) are transmitted from the input unit 34 to the target temperature input unit 37h (control unit 18) shown in Fig. 3, and the target temperature input unit 37h stores (inputs) the received target temperatures in the target temperature memory unit 36a.

[0072] If the target temperature is updated, the updated target temperature is stored (input) in the target temperature storage unit 36a in step S2, which is executed again. This makes it possible to air-condition the building 2 based on the updated target temperature.

[0073] [Room temperature correction process (Room temperature correction method)] Next, in the control method of this embodiment, the room temperature measured by the first temperature sensor 17a is corrected (room temperature correcting step S3). In the room temperature correcting step S3 of this embodiment, a room temperature correcting method is carried out.

[0074] As described above, first temperature sensor 17a measures the room temperature around room wall surface 29, and therefore, for example, if there is a bias in the air temperature distribution in each room 10, the room temperature in the central space of the room may not be measured correctly. If air conditioner 13 or fan 24 is controlled based on the room temperature measured by such first temperature sensor 17a (i.e., the room temperature deviating from the room temperature in the central space of the room), there is a problem in that it is difficult to control the room temperature (i.e., the room temperature in the central space of the room) to the target temperature.

[0075] According to experiments conducted by the inventors, it was found that the temperature of the central space of the room can generally be estimated by adding a correction value (offset temperature) determined by the difference between the outside air temperature and the return air temperature to the room temperature (i.e., the room temperature around the room wall surface 29) measured by the first temperature sensor 17a fixed to the room wall surface 29.

[0076] In the room temperature correction step S3 (room temperature correction method) of this embodiment, the room temperature measured by the first temperature sensor 17a is corrected based on the difference between the outside air temperature and the return air temperature so as to approach the room temperature in the central space of the room. Figure 5 is a flowchart showing an example of the processing procedure of the room temperature correction method (room temperature correction step S3) of the central air-conditioning system 1.

[0077] [Temperature acquisition process] In the room temperature correcting step S3 (room temperature correcting method) of this embodiment, first, the room temperature, the return air temperature, and the outside air temperature are acquired (temperature acquiring step S31). Fig. 6 is a flowchart showing an example of the processing procedure of the temperature acquiring step S31.

[0078] [Get room temperature] In the temperature acquisition step S31 of this embodiment, first, the room temperature measured by the first temperature sensor 17a shown in FIG. 1 is acquired (step S311).

[0079] In step S311 of this embodiment, a first input unit 37a included in the program unit 37 shown in Fig. 3 is loaded into the working memory 33. The first input unit 37a is a program for acquiring the room temperatures of the rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor) measured by the first temperature sensor 17a shown in Fig. 1. Execution of this first input unit 37a by the calculation unit 31 causes the control unit 18 to function as a means for acquiring the room temperatures.

[0080] As described above, in this embodiment, the room temperature on the room wall surface 29 of each of the rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor) is measured by the first temperature sensor 17a. These measured room temperatures are transmitted from the first temperature sensor 17a to the control unit 18 (first input unit 37a) shown in FIG. 3. The first input unit 37a then inputs (stores) the received room temperatures into the measured temperature memory unit 36c.

[0081] [Get return air temperature] Next, in the temperature acquisition step S31 of this embodiment, the return air temperature measured by the second temperature sensor 17b shown in FIG. 1 is acquired (step S312).

[0082] In step S312 of this embodiment, a second input section 37b included in the program section 37 shown in Fig. 3 is loaded into the working memory 33. The second input section 37b is a program for acquiring the temperature of the return air A4 shown in Fig. 1. When the second input section 37b is executed by the calculation section 31, the control section 18 can function as a means for acquiring the return air temperature.

[0083] As described above, in this embodiment, the temperature of the return air A4 (return air temperature) is measured by the second temperature sensor 17b. This temperature of the return air A4 is transmitted from the second temperature sensor 17b to the control unit 18 (second input unit 37b) shown in Fig. 3. The second input unit 37b then inputs (stores) the received temperature of the return air A4 into the measured temperature storage unit 36c.

[0084] [Get outside temperature] Next, in the temperature acquisition step S31 of this embodiment, the outside air temperature measured by the third temperature sensor 17c shown in FIG. 1 is acquired (step S313).

[0085] In step S313 of this embodiment, a third input unit 37c included in the program unit 37 shown in Fig. 3 is loaded into the working memory 33. The third input unit 37c is a program for acquiring the temperature of the outside air A1 shown in Fig. 1. When the third input unit 37c is executed by the calculation unit 31, the control unit 18 can function as a means for acquiring the outside air temperature.

[0086] As described above, in this embodiment, the temperature of the outside air A1 is measured by the third temperature sensor 17c. This outside air temperature is transmitted from the third temperature sensor 17c to the control unit 18 (third input unit 37c) shown in Fig. 3. The third input unit 37c then inputs (stores) the received outside air temperature into the measured temperature storage unit 36c.

[0087] [Correct room temperature] Next, in the room temperature correction step S3 (room temperature correction method) of this embodiment, the room temperature is corrected based on the difference between the outside air temperature and the return air temperature (step S32). In this embodiment, the room temperature of each of the multiple rooms 10 shown in Figure 1 (in this example, the first room 10a and second room 10b on the first floor, and the third rooms 10c and 10d on the second floor) is corrected.

[0088] The room temperature can be appropriately corrected based on the difference between the outdoor air temperature and the return air temperature. In this embodiment, the relationship between the difference between the outdoor air temperature and the return air temperature and the correction value for the room temperature based on this difference is used. Figure 7 is a graph showing the relationship between the difference between the outdoor air temperature and the return air temperature and the correction value for the room temperature when the air conditioner 13 is in heating operation.

[0089] The horizontal axis of Fig. 7 is the outside air temperature T out and return air temperature T r The difference between the inside and outside temperature (T r -T out ) indicates the temperature difference between the inside and outside (T r -T out ) is the return air temperature T r to the outside temperature T out The vertical axis of FIG. 7 represents the offset temperature Δt, which is the correction value for the room temperature.

[0090] In FIG. 7, a relationship R is specified for each of multiple living rooms 10 (in this example, the first living room 10a and the second living room 10b on the first floor, and the third living room 10c and the fourth living room 10d on the second floor). This is because the types of room wall surfaces 29 on which the first temperature sensors 17a are installed (exterior wall Wo, the walls of first partition wall Wi1 and second partition wall Wi2), the internal / external pressure difference resulting from the indoor / outdoor temperature difference during heating / cooling, and the amount of solar radiation are different in each living room 10, and therefore the influences on the room temperatures measured by the first temperature sensors 17a tend to differ from one another. Note that, if the influence on the room temperatures measured by the first temperature sensors 17a is small in multiple living rooms 10, only one relationship R may be specified.

[0091] As shown in FIG. 1, if the first temperature sensor 17a is installed on the exterior wall Wo in the first living room 10a on the first floor, the living room temperature measured by this first temperature sensor 17a will be affected by the outside air temperature 38. On the other hand, if the first temperature sensor 17a is installed on the first partition wall Wi1 in the second living room 10b on the first floor, the living room temperature measured by this first temperature sensor 17a will be affected by the living room temperature of the non-living room 11 (the first-floor hallway 11a) adjacent to the second living room 10b on the first floor. For example, in winter, the outside air temperature tends to be lower than the living room temperature of the non-living room 11. Therefore, the living room temperature of the first living room 10a on the first floor, in which the first temperature sensor 17a is installed on the exterior wall Wo, will tend to be measured lower than the living room temperature of the second living room 10b on the first floor, in which the first temperature sensor 17a is installed on the first partition wall Wi1.

[0092] Furthermore, during heating operation, an ascending air current is generated in the above-floor space 4, so the pressure in the fourth living room 10d on the second floor tends to be higher than the pressure in the first living room 10a on the first floor. As a result, the living room temperature measured in the fourth living room 10d on the second floor tends to be higher than the living room temperature measured in the first living room 10a on the first floor.

[0093] Thus, in each living room 10, the influence on the room temperature measured by first temperature sensor 17a tends to differ depending on the type of room wall surface 29 on which first temperature sensor 17a is installed, the difference in indoor / outdoor pressure due to the difference in indoor / outdoor temperature during heating operation, the amount of solar radiation, etc. Therefore, by specifying the above relationship R for each of multiple living rooms 10, the room temperature measured by first temperature sensor 17a in each living room 10 can be appropriately corrected to approach the room temperature in the central space of the room.

[0094] If the partition wall (not shown) on which the first temperature sensor 17a is installed is adjacent to another living room (not shown), the difference between the living room temperature measured by the first temperature sensor 17a and the living room temperature in the central space of the living room will be smaller than in the first living room 10a and the second living room 10b where the first temperature sensor 17a is installed on the exterior wall Wo or the first partition wall Wi1. Therefore, in such a case, correction of the living room temperature measured by the first temperature sensor 17a may be omitted.

[0095] The above relationship R can be appropriately specified for each of the multiple living rooms 10. First, a method for specifying the relationship Raw for the first living room 10a on the first floor will be described.

[0096] In this embodiment, first, after the air conditioner 13 is put into heating operation, the return air temperature T r1 , the room temperature T of the first room 10a on the first floor i1 and outside temperature T out1 is measured. At this time, in order to stabilize the temperature distribution of the air in the first room 10a, it is preferable that the above measurement be performed 30 to 120 minutes after the start of the heating operation of the air conditioner 13. Furthermore, it is preferable that the air volume notch of the fan 24 is kept constant. Next, the return air temperature T r1 to the outside temperature T out1 By subtracting the temperature difference between inside and outside the room at any time (T r1 -T out1 ) is identified.

[0097] Next, at an arbitrary time (in this example, before the control method is implemented), the offset temperature Δt1 of the first living room 10a on the first floor is determined. This offset temperature Δt1 is determined by subtracting the room temperature T measured by the first temperature sensor 17a of the first living room 10a on the first floor from the room temperature T i1 is a correction value for correcting the temperature in the central space of the first room 10a on the first floor to approach the room temperature in the central space of the first room 10a. Therefore, the offset temperature Δt1 is used to correct the room temperature in the central space of the first room 10a on the first floor by subtracting the room temperature T i1However, since no temperature sensor is provided in the central space of the room, the room temperature in the central space of the room cannot be obtained. Here, the air in the room 10 quickly returns to the chamber unit 14 as return air A4 with almost no change in temperature. Therefore, the room temperature in the central space of the room can be determined by subtracting the return air temperature T r1 Therefore, the offset temperature Δt1 is calculated by multiplying the return air temperature T r1 From the above, the room temperature T measured by the first temperature sensor 17a is calculated. i1 can be determined by subtracting the value.

[0098] The temperature difference between the inside and outside at any time (T r1 -T out1 ) and the offset temperature Δt1 of the first room 10a on the first floor at any time are plotted on the graph of FIG. 7 (shown as point P1 in FIG. 7). r -T out ) and the offset temperature Δt are both 0°C) and point P1 is identified as the relationship Raw for the first room 10a on the first floor. Such a relationship Raw is identified as a linear function, and the return air temperature T r and the outside air temperature T acquired in step S313 out The temperature difference between inside and outside the r -T out ) is substituted, the offset temperature Δt of the first living room 10a on the first floor can be uniquely identified.

[0099] The relationship Raw of the first living room 10a on the first floor is not limited to being determined based on the origin and one point P1 determined from measurements at any time. For example, the relationship Raw of the first living room 10a on the first floor may be determined as a linear function obtained by linear approximation using the least squares method between the origin and two or more points P1, or as a quadratic function obtained by curve approximation.

[0100] In this embodiment, the relationship Rbw of the second living room 10b on the first floor, the relationship Rcw of the third living room 10c on the second floor, and the relationship Rdw of the fourth living room 10d on the second floor can be determined based on the same procedure as the method for determining the relationship Raw of the first living room 10a on the first floor. r1 -T out1 ) and the offset temperature Δt3 of the second room 10b on the first floor are plotted as point P3. r1 -T out1 ) and the offset temperature Δt4 of the third room 10c on the second floor are plotted as point P4. r1 -T out1 ) and the offset temperature Δt2 of the fourth living room 10d on the second floor are plotted as point P2. Based on these points P2 to P4, the relationship Rbw of the second living room 10b on the first floor, the relationship Rcw of the third living room 10c on the second floor, and the relationship Rdw of the fourth living room 10d on the second floor can be determined.

[0101] As described above, in winter (during heating operation), the room temperature of the first living room 10a on the first floor, in which the first temperature sensor 17a is installed on the exterior wall Wo, tends to be measured lower than the room temperature of the second living room 10b on the first floor, in which the first temperature sensor 17a is installed on the first partition wall Wi1. Therefore, the room temperature of the first living room 10a on the first floor tends to deviate more significantly from the room temperature in the central space of the living room (return air temperature) than the room temperature of the second living room 10b on the first floor. In this embodiment, the offset temperature Δt1 specified by the relationship Raw for the first living room 10a on the first floor is set to be greater than the offset temperature Δt3 specified by the relationship Rbw for the second living room 10b on the first floor. These offset temperatures Δt1 and Δt3 are added to the room temperatures of the first living room 10a and the second living room 10b on the first floor measured by the first temperature sensor 17a, and can be corrected to approach the room temperatures in the central spaces of the first living room 10a and the second living room 10b on the first floor.

[0102] Similarly, in winter (during heating operation), the room temperature of the fourth living room 10d on the second floor, where the first temperature sensor 17a is mounted on the exterior wall Wo, tends to be measured lower than the room temperature of the third living room 10c on the second floor, where the first temperature sensor 17a is mounted on the second partition wall Wi2. In this embodiment, the offset temperature Δt2 specified by the relationship Rdw for the fourth living room 10d on the second floor is set to be larger than the offset temperature Δt4 specified by the relationship Rcw for the third living room 10c on the second floor. By adding these offset temperatures Δt2 and Δt4 to the room temperatures of the third living room 10c and the fourth living room 10d on the second floor measured by the first temperature sensor 17a, the room temperatures of both the third living room 10c and the fourth living room 10d on the second floor measured by the first temperature sensor 17a can be corrected to approach the room temperature in the central space of each room.

[0103] Furthermore, during heating operation, an ascending air current is generated in the above-floor space 4, causing the pressure in the fourth living room 10d on the second floor to tend to be higher than the pressure in the first living room 10a on the first floor. As a result, the room temperature measured in the fourth living room 10d on the second floor tends to be higher than the room temperature measured in the first living room 10a on the first floor. In this embodiment, the offset temperature Δt2 specified by the relationship Rdw for the fourth living room 10d on the second floor is set to be smaller than the offset temperature Δt1 specified by the relationship Raw for the first living room 10a on the first floor. By adding these offset temperatures Δt1 and Δt2 to the room temperatures of the first living room 10a on the first floor and the fourth living room 10d on the second floor measured by the first temperature sensor 17a, the room temperatures of both the first living room 10a on the first floor and the fourth living room 10d on the second floor measured by the first temperature sensor 17a can be corrected to approach the room temperature in the respective central spaces of the rooms.

[0104] In this way, in this embodiment, the above relationship Raw to Rdw is identified for each of multiple living rooms 10, so that the living room temperature measured by the first temperature sensor 17a in each living room 10 can be appropriately corrected to approach the living room temperature in the central space of the living room.

[0105] In this embodiment, it is preferable to perform a step (not shown) prior to performing step S32, in which a relationship R between the difference between the outside air temperature and the return air temperature and a correction value for the ambient room temperature based on the difference is specified. This step is performed by a service technician, a user (resident), or the like, based on the procedure described above, and the specified relationship Raw to Rdw is stored in the correction data storage unit 36b shown in FIG.

[0106] Next, the procedure for correcting the room temperature using the above relationship Raw~Rdw will be described. In step S32 of this embodiment, first, the room temperatures, return air temperatures, and outdoor air temperatures of the multiple rooms 10 input into the measured temperature storage unit 36c shown in Fig. 3 are read into the working memory 33. Furthermore, the above relationship (i.e., the relationship Raw~Rdw (shown in Fig. 7) between the difference between the outdoor air temperature and the return air temperature and the correction value of the room temperature based on said difference) input (stored) in advance in the correction data storage unit 36b is read into the working memory 33.

[0107] Furthermore, in step S32 of this embodiment, a temperature correction unit 37d included in the program unit 37 shown in Fig. 3 is loaded into the working memory 33. The temperature correction unit 37d is a program for correcting the room temperature based on the difference between the outside air temperature and the return air temperature. Execution of this temperature correction unit 37d by the calculation unit 31 causes the control unit 18 to function as a means for correcting the room temperature.

[0108] In step S32 of this embodiment, first, the outside air temperature measured in step S313 is subtracted from the return air temperature acquired in step S312. As a result, the inside / outside temperature difference (T r -T out ) is obtained. Next, the temperature difference between the inside and outside (T r -T out ) is substituted into the relationship R, the offset temperatures Δt (corrected values ​​of room temperatures) of the plurality of rooms 10 are uniquely identified.

[0109] In winter, when heating operation is mainly performed, as described above, the room temperature measured by first temperature sensor 17a may be lower than the room temperature in the central space of the rooms. Therefore, by adding a correction value for the room temperature (offset temperature Δt) to the room temperature measured by first temperature sensor 17a, a room temperature corrected to approach the room temperature in the central space of the rooms (return air temperature) (hereinafter sometimes referred to as the "corrected room temperature") is obtained. This corrected room temperature is obtained for each of the first to fourth rooms 10a to 10d.

[0110] Thus, in the living room temperature correction step S3 (living room temperature correction method) of this embodiment, a corrected living room temperature is calculated for each of the multiple living rooms 10 by correcting the living room temperature measured by the temperature sensor (first temperature sensor 17a) provided on the living room wall surface 29 so that it approaches the living room temperature (return air temperature) in the living room central space. By controlling the air conditioner 13 and fan 24 based on these corrected living room temperatures and the target temperature, it becomes possible to control (bring closer to) the living room temperature in the living room central space in each of the multiple living rooms 10 to the target temperature. The corrected living room temperature is input (stored) in the correction temperature memory unit 36d.

[0111] [Control air conditioners and / or fans] Next, in the control method of this embodiment, the air conditioner 13 and / or the fan 24 are controlled (step S4).

[0112] In step S4 of this embodiment, first, the target temperature input into the measured temperature storage unit 36c is read into the working memory 33. Next, in step S4 of this embodiment, the corrected room temperature (corrected room temperature) input into the corrected temperature storage unit 36d is read into the working memory 33. Furthermore, in step S4 of this embodiment, the temperature control unit 37e included in the program unit 37 shown in FIG. 3 is read into the working memory 33. The temperature control unit 37e is a program for controlling the air conditioner 13 and / or the fan 24 based on the difference between the corrected room temperature and the target temperature. Execution of this temperature control unit 37e by the calculation unit 31 allows the control unit 18 to function as a means for controlling the air conditioner 13 and / or the fan 24. In this embodiment, the air conditioner 13 and the fan 24 are controlled, but only one of the air conditioner 13 and the fan 24 may be controlled.

[0113] As described above, the air conditioner 13 and the fan 24 are controlled based on the difference between the corrected room temperature and the target temperature. When the room temperature and the target temperature are obtained for each of multiple rooms 10, as in this embodiment, the difference between the room temperature and the target temperature for each room 10 may be calculated, and the average of these differences may be calculated. The air conditioner 13 and the fan 24 may then be controlled based on the calculated average. The air conditioner 13 and the fan 24 are also controlled as needed. In this embodiment, the set temperature of the air conditioner 13, the airflow rate of the indoor unit fan (not shown), and the airflow rate notch of the fan 24 are adjusted as needed to reduce the difference between the corrected room temperature and the target temperature. This allows the room temperature in the central space of the room to approach the target temperature, improving room temperature controllability.

[0114] [Determine whether or not an instruction to stop air conditioning operation has been issued] Next, in the control method of this embodiment, as shown in Fig. 4, it is determined whether or not an instruction to end the air conditioning operation has been received (step S5). In step S5 of this embodiment, a termination determination unit 37i included in the program unit 37 shown in Fig. 3 is loaded into the working memory 33. This termination determination unit 37i is a program for determining whether or not an instruction to end the air conditioning operation has been received. Execution of this termination determination unit 37i by the calculation unit 31 allows the control unit 18 to function as a means for determining whether or not an instruction to end the air conditioning operation has been received.

[0115] The determination of whether or not there is an instruction to end the air conditioning operation is made based on, for example, instruction data input by a user (resident) or the like to the input unit 34 (shown in Figures 1 and 3), or the occurrence of an abnormal termination of an interrupt process or the like.

[0116] In this embodiment, if it is determined that an instruction to end the air conditioning operation has been given ("Yes" in step S5), step S6 is performed to end the air conditioning operation. On the other hand, if it is determined that an instruction to end the air conditioning operation has not been given ("No" in step S5), steps S2 to S4 are performed again.

[0117] In this way, the central air conditioning system 1 of this embodiment can continuously control the air conditioner 13 and / or fan 24 based on the difference between the corrected room temperature (which corresponds to the room temperature in the central space of the room) and the target temperature until an instruction to end the air conditioning operation is received. Therefore, the central air conditioning system 1 of this embodiment improves room temperature controllability and enables control that matches the bodily sensation (comfort of the occupant) of the user staying in the central space of the room.

[0118] The above-described steps S2 to S4 are preferably repeated at predetermined time intervals (for example, 1 to 30 minutes). This allows control based on the ever-changing room temperature and an updated target temperature, further improving the temperature controllability and comfort of the room 10.

[0119] [End air conditioning operation] Next, in the control method of this embodiment, if the determination in step S5 is affirmative, the air conditioning operation is terminated (step S6). In step S6 of this embodiment, an air conditioning termination unit 37j included in the program unit 37 shown in FIG. 3 is loaded into the working memory 33. This air conditioning termination unit 37j is a program for terminating the air conditioning of the multiple rooms 10 shown in FIG. 1 (in this example, the first room 10a and second room 10b on the first floor, and the third room 10c and fourth room 10d on the second floor). Execution of this air conditioning termination unit 37j by the calculation unit 31 causes the control unit 18 to function as a means for terminating the air conditioning operation.

[0120] In step S6 of this embodiment, the air conditioning termination unit 37j (control unit 18) terminates the air conditioning operation (heating operation or cooling operation) by the air conditioner 13. This terminates the air conditioning for the multiple rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). Meanwhile, the operation of the fan 24 and the outside air supply fan 20 may be continued to maintain ventilation of the building 2. In this case, the air volume notch of the fan 24 and the air volume of the outside air supply fan 20 are appropriately set based on, for example, the number of ventilations required for the building 2.

[0121] [Control method for central air conditioning system (second embodiment)] In the embodiments described above, the room temperature measured by the first temperature sensor 17a was corrected based on the relationship Raw-Rdw identified for each of the multiple rooms 10 (in this example, the first room 10a and second room 10b on the first floor, and the third room 10c and fourth room 10d on the second floor), but this is not limited to this configuration.

[0122] As described above, if there is a bias in the air temperature distribution within each living room 10, the first temperature sensor 17a, which measures the room temperature around the living room wall surface 29, may not be able to accurately measure the room temperature in the central space of the living room. Experiments conducted by the inventors have shown that such bias in the air temperature distribution tends to vary depending on the air volume (supply volume) of the conditioned air A3 supplied to the living room 10. That is, when the air volume is large, the conditioned air A3 can easily spread throughout the living room 10, and therefore the bias in the air temperature distribution in each living room 10 tends to be smaller. On the other hand, when the air volume is small, the conditioned air A3 cannot easily spread throughout the living room 10, and therefore the bias in the air temperature distribution in each living room 10 tends to be larger. Therefore, the smaller the air volume, the greater the tendency for the measurement value of the first temperature sensor 17a to deviate from the actual room temperature in the central space of the living room.

[0123] In this embodiment, the air volume (supply volume) of the conditioned air A3 can be specified by a plurality of air volume notches set in the fan 24. Therefore, the room temperature may be corrected based on the relationship specified for each of the plurality of air volume notches. Fig. 8 is a graph in which the relationship R between the difference between the outside air temperature and the return air temperature and the correction value for the room temperature is specified for each of the plurality of air volume notches during heating operation of the air conditioner 13. Fig. 8 shows a representative graph in which the relationship specified for each of the plurality of air volume notches is specified for the first room 10a on the first floor.

[0124] The above relationship R can be appropriately determined for each of a plurality of air volume notches for each of a plurality of living rooms 10 (first living room 10a to fourth living room 10d). First, a method for determining the relationship Ras for the small notches for the first living room 10a on the first floor will be described.

[0125] In this embodiment, first, the air conditioner 13 is put into heating operation, and the fan 24 is operated at a small notch. Then, at an arbitrary time, the return air temperature T r2 , the room temperature T of the first room 10a on the first floor i2 and outside temperature T out2In order to stabilize the temperature distribution of the air in the first room 10a, it is preferable to perform the above measurement 30 to 120 minutes after the fan 24 starts operating at a small notch. Next, the return air temperature T r2 to the outside temperature T out2 By subtracting the temperature difference between inside and outside the room at any time (T r2 -T out2 ) is identified.

[0126] Next, at any time, the offset temperature Δt5 of the first room 10a on the first floor when the fan 24 is operating at the small notch is determined. This offset temperature Δt5 is determined by subtracting the room temperature T measured by the first temperature sensor 17a in the first room 10a on the first floor when the fan 24 is operating at the small notch. i2 is a correction value for correcting the temperature in the central space of the first room 10a on the first floor to approach the room temperature in the central space of the first room 10a. Therefore, the offset temperature Δt5 is used to correct the room temperature in the central space of the first room 10a on the first floor by subtracting the room temperature T i2 As mentioned above, the room temperature in the central space of the room can be determined by subtracting the return air temperature T r2 Therefore, the offset temperature Δt5 is calculated by multiplying the return air temperature T r2 From the above, the room temperature T measured by the first temperature sensor 17a is calculated. i2 can be determined by subtracting the value.

[0127] Then, when the fan 24 is operating at a small notch, the difference between the inside and outside temperatures (T r2 -T out2 ) and the offset temperature Δt5 of the first room 10a on the first floor at any time are plotted on the graph of FIG. 8 (shown as point P5 in FIG. 8). r -T out The line connecting point P5 (when the temperature difference between the return air temperature T and the offset temperature Δt is both 0°C) is specified as the relationship Ras of the first room 10a on the first floor when the fan 24 is operating at the small notch. Such a relationship Ras is specified as a linear function, and the return air temperature T obtained in step S312r and the outside air temperature T acquired in step S313 out The temperature difference between inside and outside the r -T out ) is substituted, the offset temperature Δt can be uniquely identified.

[0128] The relationship Ras for the first living room 10a on the first floor when the fan 24 is operating at the small notch is not limited to being determined based on the origin and one point P5 determined from measurements at any time. For example, the relationship Ras may be determined as a linear function obtained by linear approximation using the least squares method between the origin and two or more points P5, or the relationship Ras for the first living room 10a on the first floor may be determined as a quadratic function obtained by curve approximation.

[0129] In this embodiment, the relationship Ram of the first living room 10a on the first floor when the fan 24 is operating at the medium notch and the relationship Ral of the first living room 10a on the first floor when the fan 24 is operating at the large notch can be determined based on the same procedure as the method for determining the relationship Ras at the small notch described above. r2 -T out2 ) and the offset temperature Δt6 of the first room 10a on the first floor when the fan 24 is operating at the middle notch are plotted as point P6. r2 -T out2 ) and the offset temperature Δt7 in the first room 10a on the first floor when the fan 24 is operating at the large notch are plotted as point P7. Based on these points P6 and P7, the relationship Ram at the medium notch and the relationship Ral at the large notch can be determined.

[0130] As described above, the smaller the airflow rate, the greater the deviation between the measurement value of the first temperature sensor 17a and the actual room temperature in the central space of the room. In this embodiment, the offset temperature Δt5 specified by the relationship Ras at the small notches is set larger than the offset temperature Δt6 specified by the relationship Ram at the medium notches and the offset temperature Δt7 specified by the relationship Ral at the large notches. As described above, the smaller the airflow rate, the larger the offset temperatures Δt5, Δt6, and Δt7 are set. Therefore, at each airflow rate notch, the offset temperatures Δt5, Δt6, and Δt7 are added to the room temperature of the first room 10a on the first floor measured by the first temperature sensor 17a, thereby correcting the temperature to approach the room temperature in the central space of the first room 10a on the first floor.

[0131] In this embodiment, the relationships (Ras, Ram, and Ral) for the first living room 10a on the first floor (not shown) can be determined for each of the plurality of airflow notches based on a procedure similar to that used to determine the relationships (Ras, Ram, and Ral) for the first living room 10a on the first floor. The relationships for the second living room 10b on the first floor (not shown), the third living room 10c on the second floor (not shown), and the fourth living room 10d on the second floor (not shown) can be determined for each of the plurality of airflow notches. In this embodiment, the relationships for each airflow notch are determined for each of the plurality of living rooms 10, and the room temperature measured by the first temperature sensor 17a in each living room 10 can be appropriately corrected to approach the room temperature in the central space of the room. These relationships determined for each of the plurality of airflow notches are stored in the correction data storage unit 36b shown in FIG. 3.

[0132] [Control method for central air conditioning system (third embodiment)] In the above-described embodiments, the room temperature measured by the first temperature sensor 17a is corrected based on the relationship R determined during heating operation of the air conditioner 13, but the present invention is not limited to this. For example, the room temperature may be corrected based on the relationship R determined for each of cooling operation and heating operation of the air conditioner 13.

[0133] FIG. 9 is a graph showing the relationship R between the difference between the outdoor air temperature and the return air temperature and the correction value for the room temperature during cooling operation of the air conditioner 13. The relationship R is specified for each of multiple rooms 10 (in this example, the first room 10a and the second room 10b on the first floor, and the third room 10c and the fourth room 10d on the second floor). This is because, in each room 10, the type of room wall surface 29 on which the first temperature sensor 17a is installed (the exterior wall Wo, the wall surface of the first partition wall Wi1, and the second partition wall Wi2), the indoor / outdoor pressure difference resulting from the indoor / outdoor temperature difference during heating / cooling, and the amount of solar radiation are different. Therefore, the influence on the room temperature measured by the first temperature sensor 17a tends to differ not only during heating operation but also during cooling operation of the air conditioner 13. Note that, if the influence on the room temperature measured by the first temperature sensor 17a is small for multiple rooms 10, only one relationship R may be specified.

[0134] The room temperature of the first living room 10a on the first floor, where the first temperature sensor 17a is installed on the exterior wall Wo, tends to be measured higher than the room temperature of the second living room 10b on the first floor, where the first temperature sensor 17a is installed on the first partition wall Wi1.

[0135] During cooling operation, a downward air current occurs in the above-floor space 4, so the pressure in the fourth living room 10d on the second floor tends to be lower than the pressure in the first living room 10a on the first floor. As a result, the living room temperature measured in the fourth living room 10d on the second floor tends to be higher than the living room temperature measured in the first living room 10a on the first floor.

[0136] Thus, in each room 10, the influence on the room temperature measured by first temperature sensor 17a tends to differ depending on the type of room wall surface 29 on which first temperature sensor 17a is installed, the difference in indoor / outdoor pressure due to the difference in indoor / outdoor temperature during cooling operation, the amount of solar radiation, etc. Therefore, by specifying the above relationship R for each of multiple rooms 10, the room temperature measured by first temperature sensor 17a in each room 10 can be appropriately corrected to approach the room temperature in the central space of the room.

[0137] The above relationship R can be appropriately specified for each of the plurality of living rooms 10. First, a method for specifying the relationship Rac for the first living room 10a on the first floor will be described.

[0138] In this embodiment, first, after the air conditioner 13 is put into cooling operation, the return air temperature T r3 , the room temperature T of the first room 10a on the first floor i3 and outside temperature T out3 is measured. At this time, in order to stabilize the temperature distribution of the air in the first room 10a, it is preferable that the above measurement be performed 30 to 120 minutes after the start of the cooling operation of the air conditioner 13. Furthermore, it is preferable that the air volume notch of the fan 24 is kept constant. Next, the return air temperature T r3 to the outside temperature T out3 By subtracting the temperature difference between inside and outside the room at any time (T r3 -T out3 ) is identified.

[0139] Next, the offset temperature Δt9 of the first living room 10a on the first floor at an arbitrary time is determined. This offset temperature Δt9 is determined by subtracting the room temperature T i3 is a correction value for correcting the temperature in the central space of the first room 10a on the first floor to approach the room temperature in the central space of the first room 10a. Therefore, the offset temperature Δt9 is used to correct the room temperature in the central space of the first room 10a on the first floor by subtracting the room temperature T i3 As mentioned above, the room temperature in the central space of the room can be determined by subtracting the return air temperature T r3 Therefore, the offset temperature Δt9 is approximately the return air temperature T r3 From the above, the room temperature T measured by the first temperature sensor 17a is calculated. i3 can be determined by subtracting the value.

[0140] The temperature difference between the inside and outside at any time (T r3 -T out3) and the offset temperature Δt9 of the first room 10a on the first floor at any time are plotted on the graph of FIG. 9 (shown as point P9 in FIG. 9). r -T out The line connecting the point P9 and the temperature difference (T ) and the offset temperature Δt are both 0°C is specified as the relationship Rac of the first room 10a on the first floor during cooling operation. r -T out ) is substituted, the offset temperature Δt of the first living room 10a on the first floor can be uniquely identified.

[0141] Note that the relationship Rac of the first living room 10a on the first floor during cooling operation is not limited to being determined based on the origin and one point P9 determined from measurements at any time. For example, the relationship Rac of the first living room 10a on the first floor may be determined as a linear function obtained by linear approximation using the least squares method between the origin and two or more points P9, or as a quadratic function obtained by curve approximation.

[0142] Based on the same procedure as the method for determining the relationship Rac of the first living room 10a on the first floor during cooling operation, the relationship Rbc of the second living room 10b on the first floor during cooling operation, the relationship Rcc of the third living room 10c on the second floor during cooling operation, and the relationship Rdc of the fourth living room 10d on the second floor during cooling operation can be determined. r3 -T out3 ) and the offset temperature Δt 11 The difference between the inside and outside temperatures (T r3 -T out3 ) and the offset temperature Δt 10 The difference between the inside and outside temperatures (T r3 -T out3) and the offset temperature Δt8 of the fourth living room 10d on the second floor are plotted as point P8. Based on these points P8, 10, and 11, the relationship Rbc of the second living room 10b on the first floor, the relationship Rcc of the third living room 10c on the second floor, and the relationship Rdc of the fourth living room 10d on the second floor can be determined.

[0143] In summer (cooling operation), unlike in winter (heating operation) in the previous embodiments, the room temperature of the first living room 10a on the first floor, where the first temperature sensor 17a is installed on the exterior wall Wo, tends to be measured higher than the room temperature of the second living room 10b on the first floor, where the first temperature sensor 17a is installed on the first partition wall Wi1. Therefore, the room temperature of the first living room 10a on the first floor tends to deviate more greatly from the room temperature in the central space of the rooms (return air temperature) than the room temperature of the second living room 10b on the first floor. In this embodiment, the offset temperature Δt9 specified by the relationship Rac of the first living room 10a on the first floor is higher than the offset temperature Δt 11 These offset temperatures Δt9 and Δt 11 By adding this to the room temperatures of the first living room 10a and the second living room 10b on the first floor measured by the first temperature sensor 17a, the temperatures can be corrected to approach the room temperatures in the central spaces of the first living room 10a and the second living room 10b on the first floor.

[0144] Similarly, in summer (during cooling operation), the room temperature of the fourth room 10d on the second floor, where the first temperature sensor 17a is installed on the exterior wall Wo, tends to be measured higher than the room temperature of the third room 10c on the second floor, where the first temperature sensor 17a is installed on the second partition wall Wi2. In this embodiment, the offset temperature Δt8 specified by the relationship Rdc of the fourth room 10d on the second floor is higher than the offset temperature Δt 10 These offset temperatures Δt8 and Δt 10By adding this to the room temperatures of the third room 10c and the fourth room 10d on the second floor measured by the first temperature sensor 17a, the room temperatures of both the third room 10c and the fourth room 10d on the second floor measured by the first temperature sensor 17a can be corrected to approach the room temperatures in the central spaces of the respective rooms.

[0145] Furthermore, during cooling operation, downward air currents are generated in the above-floor space 4, causing the pressure in the fourth living room 10d on the second floor to tend to be lower than the pressure in the first living room 10a on the first floor. As a result, the room temperature measured in the fourth living room 10d on the second floor tends to be higher than the room temperature measured in the first living room 10a on the first floor. In this embodiment, the offset temperature Δt8 specified by the relationship Rdc for the fourth living room 10d on the second floor is set to be smaller than the offset temperature Δt9 specified by the relationship Rac for the first living room 10a on the first floor. By adding these offset temperatures Δt8 and Δt9 to the room temperatures measured by the first temperature sensor 17a for the first living room 10a on the first floor and the fourth living room 10d on the second floor, the room temperatures measured by the first temperature sensor 17a for both the first living room 10a on the first floor and the fourth living room 10d on the second floor can be corrected to approach the room temperature in the respective central spaces of the rooms.

[0146] In this manner, in the present embodiment, by specifying the above relationships Rac-Rdc for each of the multiple rooms 10 during cooling operation, the room temperature measured by the first temperature sensor 17a in each room 10 can be appropriately corrected to approach the room temperature in the central space of the room. Therefore, in this embodiment, the room temperature is corrected based on both the relationship R (shown in FIG. 9) specified during cooling operation of the air conditioner 13 and the relationship R (shown in FIG. 7) specified during heating operation of the air conditioner 13. This allows the room temperature measured by the first temperature sensor 17a to be corrected to approach the temperature in the central space of the room during both cooling operation and heating operation, thereby improving room temperature controllability. The relationship during cooling operation of the air conditioner 13 and the relationship during heating operation described in the previous embodiments are stored in the correction data storage unit 36b shown in FIG. 3.

[0147] In this embodiment, the relationships Raw-Rdw (shown in FIG. 7) and relationships Rac-Rdc (shown in FIG. 9) are specified for each of the multiple rooms 10 during both cooling and heating operation of the air conditioner 13, but the present invention is not limited to this. For example, the relationships Raw-Rdw for each room 10 during heating operation and the relationships Rac-Rdc for each room 10 during cooling operation may be specified for each of the multiple air volume notches, as in the second embodiment described above.

[0148] Although a particularly preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the illustrated embodiment and can be modified and implemented in various ways.

[0149] [Note] The present invention includes the following aspects.

[0150] [Invention 1] A whole-building air conditioning system for conditioning multiple rooms with a single heat source, a chamber unit having an air conditioner therein for generating conditioned air; a duct conveying section including a plurality of ducts and fans for conveying the conditioned air in the chamber unit to each of the living rooms; a return path for returning the return air that has passed through the plurality of rooms to the chamber unit; a first temperature sensor provided on a wall surface of each of the rooms; a second temperature sensor for measuring the temperature of the return air; a third temperature sensor for measuring an outside air temperature; a control unit that controls the air conditioner and / or the fan, The control unit a target temperature storage unit that stores a target temperature preset for each of the plurality of rooms; a first input unit that acquires the room temperature measured by the first temperature sensor; a second input unit that acquires the return air temperature measured by the second temperature sensor; a third input unit that acquires the outside air temperature measured by the third temperature sensor; a temperature correction unit that corrects the room temperature based on a difference between the outside air temperature and the return air temperature; a temperature control unit that controls the air conditioner and / or the fan based on a difference between the corrected room temperature and the target temperature, Air conditioning system throughout the building. [Invention 2] The control unit further includes a correction data storage unit that specifies the relationship between the difference between the outside air temperature and the return air temperature and a correction value for the living room temperature based on the difference. [Invention 3] 3. The central air-conditioning system according to claim 2, wherein the correction data storage unit stores the relationship for each of the plurality of rooms. [Invention 4] the control unit includes a fan drive unit that operates the fan at a plurality of predetermined air volume notches; 4. The central air-conditioning system according to claim 2 or 3, wherein the correction data storage unit stores the relationship for each of the plurality of air volume notches. [Invention 5] 5. The central air-conditioning system according to any one of claims 2 to 4, wherein the correction data storage unit stores the relationship for each of cooling operation and heating operation of the air conditioner. [Invention 6] By operating an air conditioner inside the chamber unit, conditioned air is generated inside the chamber unit; The conditioned air in the chamber unit is transported to each of a plurality of rooms by a plurality of ducts and fans; A control method for a whole-building air-conditioning system in which return air that has passed through the plurality of rooms is returned to the chamber unit, comprising: storing a preset target temperature for each of the plurality of rooms; acquiring a room temperature, a return air temperature, and an outside air temperature on a wall surface of each of the plurality of rooms; correcting the room temperature based on a difference between the outside air temperature and the return air temperature; and controlling the air conditioner and / or the fan based on a difference between the corrected room temperature and the target temperature. How to control a whole-building air conditioning system. [Invention 7] A control method for a central air-conditioning system according to aspect 6, further comprising a step of specifying the relationship between the difference between the outside air temperature and the return air temperature and a correction value for the room temperature based on the difference. [Invention 8] A method for controlling a central air-conditioning system according to aspect 7, further comprising the step of storing the relationship for each of the plurality of rooms. [Invention 9] operating the fan at a plurality of predetermined airflow notches; 9. The method for controlling a central air-conditioning system according to invention 7 or 8, further comprising the step of storing the relationship for each of the plurality of air volume notches. [Invention 10] 10. A method for controlling a central air-conditioning system according to any one of claims 7 to 9, further comprising the step of storing the relationship each time the air conditioner is in cooling operation and heating operation. [Invention 11] By operating an air conditioner inside the chamber unit, conditioned air is generated inside the chamber unit; The conditioned air in the chamber unit is transported to each of a plurality of rooms by a plurality of ducts and fans; A room temperature correction method for a whole-building air-conditioning system in which return air that has passed through the plurality of rooms is returned to the chamber unit, comprising: acquiring a room temperature, a return air temperature, and an outside air temperature on a wall surface of each of the plurality of rooms; and correcting the room temperature based on a difference between the outside air temperature and the return air temperature. A method for correcting room temperatures in a whole-building air conditioning system. [Explanation of symbols]

[0151] 13 Air conditioner 17a First temperature sensor 17b Second temperature sensor 17c Third Temperature Sensor 18 Control Unit 24 Fans 36a Target temperature storage section 37a First input section 37b Second input section 37c Third input section 37d Temperature correction section 37e Temperature control unit

Claims

1. A central air conditioning system for conditioning multiple rooms with a single heat source, A chamber unit having an air conditioner therein for generating conditioned air; a duct conveying section including a plurality of ducts and fans for conveying the conditioned air in the chamber unit to each of the rooms; a return path for returning the return air that has passed through the plurality of rooms to the chamber unit; A first temperature sensor provided on a wall surface of each of the rooms; a second temperature sensor for measuring the temperature of the return air; a third temperature sensor for measuring an outside air temperature; A control unit that controls the air conditioner and / or the fan, The control unit is a target temperature storage unit that stores a target temperature preset for each of the plurality of rooms; A first input unit that acquires a room temperature measured by the first temperature sensor; A second input unit that acquires a return air temperature measured by the second temperature sensor; a third input unit that acquires the outside air temperature measured by the third temperature sensor; a temperature correction unit that corrects the room temperature based on a difference between the outside air temperature and the return air temperature; and a temperature control unit that controls the air conditioner and / or the fan based on a difference between the corrected room temperature and the target temperature. Air conditioning system throughout the building.

2. The central air conditioning system according to claim 1 , wherein the control unit further includes a correction data storage unit that specifies a relationship between a difference between the outside air temperature and the return air temperature and a correction value for the living room temperature based on the difference.

3. The central air-conditioning system according to claim 2 , wherein the correction data storage unit stores the relationship for each of the plurality of rooms.

4. The control unit includes a fan drive unit that operates the fan at a plurality of predetermined air volume notches, The central air-conditioning system according to claim 2 , wherein the correction data storage unit stores the relationship for each of the plurality of air volume notches.

5. The central air-conditioning system according to claim 2 , wherein the correction data storage unit stores the relationship for each of a cooling operation and a heating operation of the air conditioner.

6. By operating an air conditioner inside the chamber unit, conditioned air is generated inside the chamber unit; The conditioned air in the chamber unit is transported to each of a plurality of rooms by a plurality of ducts and fans; A method for controlling a whole-building air-conditioning system in which return air that has passed through the plurality of rooms is returned to the chamber unit, comprising: storing a preset target temperature for each of the plurality of rooms; acquiring a room temperature, a return air temperature, and an outside air temperature on a wall surface of each of the rooms; correcting the room temperature based on a difference between the outside air temperature and the return air temperature; and controlling the air conditioner and / or the fan based on a difference between the corrected room temperature and the target temperature. How to control a whole-building air conditioning system.

7. The method for controlling a central air-conditioning system according to claim 6 , further comprising the step of identifying a relationship between a difference between the outside air temperature and the return air temperature and a correction value for the room temperature based on the difference.

8. The method for controlling a central air-conditioning system according to claim 7 , further comprising the step of storing the relationship for each of the plurality of rooms.

9. operating the fan at a number of predetermined airflow notches; The method for controlling a central air-conditioning system according to claim 7 or 8, further comprising the step of storing the relationship for each of the plurality of air volume notches.

10. 9. The method for controlling a central air-conditioning system according to claim 7, further comprising the step of storing the relationship each time the air conditioner is in cooling operation and each time the air conditioner is in heating operation.

11. By operating an air conditioner inside the chamber unit, conditioned air is generated inside the chamber unit; The conditioned air in the chamber unit is transported to each of a plurality of rooms by a plurality of ducts and fans; A method for correcting room temperatures in a central air conditioning system in which return air that has passed through the plurality of rooms is returned to the chamber unit, comprising: acquiring a room temperature, a return air temperature, and an outside air temperature on a wall surface of each of the rooms; and correcting the room temperature based on a difference between the outside air temperature and the return air temperature. How to correct room temperatures in a central air conditioning system.

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