JP2023032051A - Whole-building air conditioning system and method for inspecting the same - Google Patents

Abstract

[Problem] To provide a central air conditioning system and an inspection method thereof that is useful not only for inspecting air conditioners but also for identifying causes of impeding air conditioning on the residential side. [Solution] An inspection method for a central air conditioning system 1 for a residential home including an air conditioner 6, a duct 7 for supplying air Ac conditioned by the air conditioner 6 to a plurality of rooms 5, and a control unit 8 communicatively connected to the air conditioner 6. This inspection method includes a storage step in which the control unit 8 acquires status information including at least the temperatures on the intake 14 side and the exhaust 15 side of the air conditioner 6 and the volume of air blown out, and stores the information in the storage unit, a calculation step in which the control unit 8 calculates heat quantities including at least the sensible heat capacity and latent heat capacity of the air conditioner 6 based on the stored status information, and a display step in which the control unit displays the calculated heat quantities and/or information obtained from the heat quantities. [Selected Figure] Figure 1

Description

The present invention relates to a central air-conditioning system and an inspection method thereof.

In recent years, various residential air-conditioning systems have been proposed. For example, Patent Document 1 below describes an air-conditioned room in which an indoor unit of an air conditioner is arranged, a first flow path that supplies at least the air in the building to the air-conditioned room, one end communicating with the air-conditioned room, and another An air conditioning system is described that includes a second flow path having an end communicating with a living room in the building, a first fan for supplying air from the air conditioned room to the living room via the second flow path, and a controller. there is

JP 2021-085533 A

By the way, in the central air-conditioning system, the air that has been conditioned by the air conditioner is supplied to a plurality of living rooms through ducts, so it is important that the air conditioner exhibits an appropriate air conditioning capacity. . Moreover, even if the air conditioner exhibits its original ability, it may not be possible to sufficiently air-condition each living room for some reason on the side of the house. In such a case, it is not easy to identify the cause of obstruction of air conditioning existing on the residential side.

The present invention has been devised in view of the actual situation as described above, and is primarily intended to provide a central air-conditioning system that is useful not only for inspecting air conditioners but also for identifying the cause of obstruction of air-conditioning existing on the residential side. purpose.

The present invention relates to an entire house including an air conditioner, a duct for supplying air conditioned by the air conditioner to a plurality of living rooms, and a control section communicably connected to the air conditioner. In the air conditioning system inspection method, a storage step in which the control unit acquires status information including at least the temperature of each of the air inlet side and the air outlet side of the air conditioner and the amount of blown air, and stores the status information in a storage unit. a calculation step in which the control unit calculates a heat quantity including at least the sensible heat capacity and the latent heat capacity of the air conditioner based on the stored situation information; and the control unit calculates the calculated heat quantity and and/or a display step of displaying information obtained from the amount of heat.

The inspection method for the central air-conditioning system according to the present invention further includes a maximum operation step in which the control unit operates the air conditioner in a maximum operation mode, and wherein the calculating step includes: The information may be used to calculate the amount of heat.

In the inspection method for the central air-conditioning system according to the present invention, the control unit causes the air conditioner to execute the maximum operation step when the temperature on the suction port side satisfies a predetermined condition. good.

In the inspection method for the central air conditioning system according to the present invention, the displaying step includes at least a sensible heat ratio, which is the ratio of the sensible heat capacity to the air conditioning capacity, and a latent heat ratio, which is the ratio of the latent heat capacity to the air conditioning capacity. Either one may be displayed.

In the inspection method for the central air-conditioning system according to the present invention, the calculating step may be performed based on predetermined schedule information.

The inspection method for the central air-conditioning system according to the present invention may further include a heat amount information storage step in which the control unit stores the calculated heat amount in the storage unit.

The present invention provides a residential air-conditioning system including an air conditioner, a duct for supplying air conditioned by the air conditioner to a plurality of rooms, and a computer communicably connected to the air conditioner. A program for causing the computer to execute a method for inspecting the above, wherein the computer is provided with status information including at least the temperature of each of the air inlet side and the air outlet side of the air conditioner and the amount of blown air a storing step of acquiring and storing in a storage unit; a calculating step of calculating a heat quantity including at least the sensible heat capacity and the latent heat capacity of the air conditioner based on the stored situation information; and/or a display step of displaying information obtained from the amount of heat.

The present invention is a central air conditioning system for a residence, comprising: an air conditioner; a duct for supplying air conditioned by the air conditioner to a plurality of living rooms; and communicably connected to the air conditioner. a control unit, wherein the control unit stores status information including at least the temperatures on the inlet side and the outlet side of the air conditioner and the amount of blown air; and a calculation unit for calculating a heat quantity including at least the sensible heat capacity and the latent heat capacity of the air conditioner, and a display unit for displaying the heat quantity and/or information obtained from the heat quantity. do.

By adopting the above configuration, the central air-conditioning system of the present invention makes it possible not only to inspect the air conditioner but also to identify the cause of obstruction of the air-conditioning existing in the residence.

1 is a sectional view conceptually showing a house in which a central air-conditioning system of this embodiment is installed; FIG. It is a conceptual diagram showing the configuration of the control unit of the present embodiment. 4 is a flow chart showing a processing procedure of an inspection method for the central air-conditioning system of the present embodiment; 4 is a flow chart showing a processing procedure of calculation steps of the present embodiment. 4 is a flow chart showing a processing procedure of an inspection step of the present embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described based on the drawings. It should be understood that the drawings include exaggerated representations and representations that differ from the dimensional ratios of the actual structures in order to facilitate understanding of the content of the invention. In addition, throughout each embodiment, the same or common elements are denoted by the same reference numerals, and overlapping descriptions are omitted. Furthermore, the specific configurations shown in the embodiments and drawings are for understanding the content of the present invention, and the present invention is not limited to the illustrated specific configurations.

[Housing]
FIG. 1 is a sectional view conceptually showing a house 2 in which a central air-conditioning system 1 of this embodiment is installed. A house 2 of this embodiment includes an underfloor space 3 and an overfloor space 4 . A plurality of living rooms 5 are provided in the floor space 4. - 特許庁The plurality of living rooms 5 of the present embodiment includes a living room 5A on the first floor and a living room 5B on the second floor. The plurality of living rooms 5 may be composed of, for example, only the living room 5A on the first floor, or may include living rooms (not shown) on the third and higher floors.

[Whole building air-conditioning system]
A central air-conditioning system 1 of this embodiment includes an air conditioner 6 , a duct 7 , and a controller 8 .

[Air conditioner]
The air conditioner 6 of this embodiment is accommodated inside the chamber box 11, for example. The chamber box 11 is formed in a box shape having a space inside. The chamber box 11 of the present embodiment includes an air supply port (not shown) for supplying the air Ai circulated in the plurality of living rooms 5 to the inside, and an outside air for supplying the outside air (underfloor air) Ao to the inside. An inlet (not shown) is provided. The outside air Ao of this embodiment is taken in from the underfloor space 3 via an outside air supply duct 12 and an outside air supply fan 13, for example. In addition, the outside air Ao may be taken in directly from the outdoors.

The air conditioner 6 of the present embodiment is configured by, for example, a general household separate type air conditioner. The air conditioner 6 includes an indoor unit 6A and an outdoor unit (not shown) installed outside the house 2 as a set. The indoor unit 6A has an inlet 14 and an outlet 15. As shown in FIG. The suction port 14 is for taking air (in this example, a mixture of the circulated air Ai and the outside air Ao) into a heat exchanger (not shown) provided inside the indoor unit 6A. On the other hand, the outlet 15 is for discharging the air Ac air-conditioned by the heat exchanger. The set temperature and air volume (blown air volume) of the air conditioner 6 are controlled by the controller 8, for example.

The air conditioner 6 of the present embodiment can acquire the temperature and humidity on the side of the inlet 14 and the temperature on the side of the outlet 15 by using, for example, a built-in sensor or the like. Furthermore, the air conditioner 6 can acquire (estimate) the blown air volume from, for example, the air volume setting information (TAP1 to TAP4).

The temperature and humidity on the suction port 14 side are the temperature and humidity of the air taken in from the suction port 14 (in this example, the mixture of the circulated air Ai and the outside air Ao). The temperature and humidity at the suction port 14 are acquired as the temperature and humidity at the suction port 14 side in this embodiment. The temperature and humidity on the side of the suction port 14 were measured, for example, within a predetermined range (eg, 10 to 30 cm) from the suction port 14 in the space between the suction port 14 and the outside air supply duct 12. It may be temperature and humidity.

The temperature on the side of the outlet 15 in this embodiment is the temperature of the air (air-conditioned air) Ac discharged from the outlet 15 . The temperature at the blowout port 15 is obtained as the temperature at the blowout port 15 side in this embodiment. The temperature on the outlet 15 side is, for example, the temperature measured within a predetermined range (for example, 10 cm or less) from the outlet 15 in the space between the outlet 15 and the duct 7. good.

The blowing air volume is the air volume of air (conditioned air) Ac that is discharged from the blowing port 15 . As for the blowing air volume in the present embodiment, the air volume at the blowing port 15 is acquired. As described above, the blown air volume is estimated from the air volume setting information (TAP1 to TAP4), but like the temperature on the outlet 15 side, the air volume measured within the above range may be used.

The air conditioner 6, for example, acquires the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air based on the signal from the control unit 8, and calculates these temperatures etc., can be transmitted to the control unit 8 . The temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air may be obtained by a sensor (not shown) provided separately from the air conditioner 6, or the like.

[duct]
The duct 7 of this embodiment is for supplying the air Ac air-conditioned by the air conditioner 6 to the plurality of living rooms 5 . One end of the duct 7 of this embodiment is connected to the air conditioner 6 side (in this example, the outlet 15 side inside the chamber box 11). The other end of the duct 7 is connected to multiple living rooms 5 . Thereby, the duct 7 can communicate between the air conditioner 6 (chamber box 11 ) and the plurality of living rooms 5 . The duct 7 of this embodiment includes a first duct 7A connected to the living room 5A on the first floor and a second duct 7B connected to the living room 5B on the second floor.

The duct 7 of the present embodiment is provided with a fan 16 for sending (pumping) the air Ac air-conditioned by the air conditioner 6 to the plurality of living rooms 5 . Although the fan 16 of this embodiment is housed in the chamber box 11, it is not limited to such an aspect. The fan 16 of this embodiment includes a first fan 16A connected to the first duct 7A and a second fan 16B connected to the second duct 7B.

[Control part]
The controller 8 of this embodiment is communicably connected to the air conditioner 6 . The control unit 8 of the present embodiment is configured by a computer 9 and installed, for example, on a partition wall of the living room 5 or the like.

FIG. 2 is a conceptual diagram showing the configuration of the control section 8 of this embodiment. The control unit 8 includes, for example, an arithmetic device 18 , a storage device 19 for storing processing procedures and the like, and a working memory 20 for reading the processing procedures and the like from the storage device 19 . An input device 21 and an output device 22 are connected to the control unit 8 (arithmetic device 18).

The input device 21 of the present embodiment can be configured by, for example, operation buttons and a touch panel provided on the housing of the control unit 8 (shown in FIG. 1). For example, information input by a user (resident) or the like can be transmitted to the control unit 8 (arithmetic device 18) through the input device 21 . The information to be input includes, for example, instruction information for starting and stopping the air conditioning operation, and the target temperature of each living room 5 (shown in FIG. 1).

The output device 22 of this embodiment is configured as, for example, a display provided in the housing of the control unit 8 (shown in FIG. 1). By receiving a signal from the control unit 8 (arithmetic device 18), the output device 22 can display, for example, the operation status of the central air-conditioning system 1 (shown in FIG. 1).

[Arithmetic unit]
The arithmetic unit 18 (control unit 8) of the present embodiment is configured by, for example, a CPU (central processing unit). The computing device 18 of this embodiment is communicably connected to the air conditioner 6 . As a result, the arithmetic device 18 transmits a signal to the air conditioner 6 to control the operation of the air conditioner 6 (start and stop of cooling operation, heating operation, etc., set temperature, blown air volume, etc.) be able to. Furthermore, the computing device 18 acquires the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air by transmitting signals to the air conditioner 6, and acquires these acquired Temperature, etc., can be communicated to the computing device 18 .

The computing device 18 of this embodiment is connected to the outside air supply fan 13 and the fan 16 (in this example, the first fan 16A and the second fan 16B). Thereby, the arithmetic device 18 can control the operation (start, stop, air volume (rotational speed), etc.) of the outside air supply fan 13 and the fan 16 by transmitting signals to the fans.

[Storage device]
The storage device 19 of this embodiment is, for example, a non-volatile information storage device. The storage device 19 includes a data section 23 and a program section 24 .

[Data part]
The data section 23 of the present embodiment is for storing calculation results and the like by the arithmetic device 18 . The data section 23 of this embodiment includes a storage section 23A. Note that the data unit 23 is not limited to such a mode, and an input unit or the like for storing other information may be added as necessary.

In the storage unit 23A of the present embodiment, status information indicating the operating status of the air conditioner 6 (in this example, the temperatures on the inlet 14 side and the outlet 15 side of the air conditioner 6 shown in FIG. , and the blown air volume) are stored. The status information of the present embodiment further includes, for example, the humidity on the suction port 14 side. The storage unit 23A of the present embodiment also stores the amount of heat, the air conditioning capacity, etc. calculated in the calculation step S4, which will be described later.

[Program part]
The program unit 24 is a program (computer program) for causing the computer 9 (control unit 8) to execute the inspection method of the present embodiment. The program unit (program) 24 can cause the control unit 8 (computer 9) to function as specific means by being executed by the arithmetic unit 18. FIG.

The program section 24 of this embodiment includes, for example, a condition determination section 24A, a maximum operating section 24B, a situation information acquisition section 24C, a calculation section 24D, a display section 24E and an inspection section 24F. Note that the program section 24 is not limited to such a mode, and may include other programs.

The condition determination unit 24A is for determining whether or not the temperature on the suction port 14 side of the air conditioner 6 (shown in FIG. 1) satisfies a predetermined condition. The maximum operation section 24B is for operating the air conditioner 6 in the maximum operation mode. The status information acquisition unit 24C is for acquiring status information (including at least the temperatures on the inlet 14 side and the outlet 15 side of the air conditioner 6 and the amount of blown air). Furthermore, the status information acquisition unit 24C of the present embodiment acquires the humidity on the suction port 14 side.

The calculator 24D is for calculating the amount of heat including at least the sensible heat capacity and the latent heat capacity of the air conditioner 6 (shown in FIG. 1) based on the situation information. The display unit 24E is for displaying the amount of heat calculated by the calculation unit 24D and/or information obtained from the amount of heat. The inspection unit 24F is for determining whether or not the air conditioner 6 is exhibiting its originally expected performance, and for identifying the cause of obstruction of the air conditioning existing on the house 2 side (framework side). . These functions of the program section 24 will be explained in each step of the inspection method described later.

As shown in FIG. 1 , in the central air conditioning system 1 of the present embodiment, operations of the air conditioner 6 , the outside air supply fan 13 and the fan 16 are controlled based on instructions (signals) from the controller 8 . The air conditioner 6 takes in a mixture of the air Ai and the outside air Ao circulated in the plurality of living rooms 5 through the suction port 14 and discharges air-conditioned air Ac through the outlet 15 . Air-conditioned air Ac is supplied to a plurality of living rooms 5 via ducts 7 (and fans 16). The air Ai that has circulated through the plurality of living rooms 5 passes through a return path 28 (including, for example, an undercut 26 provided on the door 25 and stairs 27), and is supplied again to the suction port 14 of the air conditioner 6. .

In this way, the central air-conditioning system 1 can air-condition and ventilate a plurality of living rooms 5 while circulating the air inside the house 2 . In such a central air-conditioning system 1, it is important that the air conditioners 6 exhibit proper air-conditioning capacity in order to air-condition the plurality of living rooms 5 appropriately.

Moreover, even when the air conditioner 6 exhibits its original ability, there is a case where each living room 5 cannot be sufficiently air-conditioned due to some cause on the side of the house 2 . There are various factors that impede such air conditioning (hereinafter sometimes simply referred to as "air conditioning impediment factors"). The cause of air conditioning obstruction includes, for example, the case where the return path 28 of the air Ai from each living room 5 to the air conditioner 6 is not sufficiently secured. Furthermore, the air-conditioning hindrance causes include the presence of an airtight weak point in the house 2 . An example of an airtight weak point is a gap that communicates an outlet plate (not shown), an elevator (not shown), or the like with the outdoors.

Due to such an air-conditioning hindrance, for example, due to the lack of air Ai from the return path 28, outside air (not shown) that enters from the airtight weak point is introduced into the suction port 14 of the indoor unit 6A. As a result, the room temperature control function of each living room 5 cannot be exhibited sufficiently. Furthermore, the cause of air-conditioning hindrance is, for example, a so-called shortcut in which the air-conditioned air Ac returns to the indoor unit 6</b>A from a route different from the original return route 28 before it spreads into each living room 5 . Thus, these air-conditioning obstruction causes obstruct the air-conditioning of each living room 5 . However, it is not easy to identify these air conditioning obstruction causes.

As a result of extensive research, the inventors have found that there is a correlation between the amount of heat including the sensible heat capacity and latent heat capacity of the air conditioner and the cause of air conditioning inhibition. For example, if there is a cause of hindrance to air conditioning, such as outside air (for example, hot and humid outside air) that has entered from an airtight weak point and is introduced into the suction port 14 of the indoor unit 6A, the air conditioner 6 is in the dehumidifying operation. This causes a decrease in the sensible heat capacity of the air conditioner 6 and an increase in the latent heat capacity. As a result, the room temperature control function of each living room 5 cannot be sufficiently exhibited. In the inspection method for the central air-conditioning system 1 of the present embodiment (hereinafter sometimes simply referred to as the "inspection method"), the cause of air conditioning obstruction is specified based on such knowledge.

[Method for inspecting central air-conditioning system (first embodiment)]
Next, the processing procedure (function of the central air-conditioning system 1) of the inspection method of this embodiment will be described. In the inspection method of the present embodiment, not only the air conditioner 6 is inspected, but also the cause of obstruction of air conditioning (cause of obstruction of air conditioning existing on the side of the house 2) is specified. In the inspection of the air conditioner 6 of the present embodiment, it is determined whether or not the air conditioner 6 is exhibiting its originally expected performance.

In the present embodiment, the inspection method is executed when the controller 8 receives an instruction to start executing the inspection method, but the present invention is not limited to such a mode. For example, execution of the inspection method may be started at the same time as operation of the central air-conditioning system 1 is started. Further, the instruction to the control unit 8 in the present embodiment is given by, for example, a serviceman (engineer) or the like who repairs the central air-conditioning system 1, but may be given by a resident of the house 2 or the like. . Furthermore, the instruction to the control unit 8 may be given directly from the input device 21 (shown in FIG. 2) of the control unit 8. It may also be performed from a computer (eg, cloud server, etc.).

In the inspection method of the present embodiment, based on the status information of the air conditioner 6, the amount of heat including at least the sensible heat capacity and the latent heat capacity of the air conditioner 6 (hereinafter sometimes simply referred to as "heat amount") is calculated. be. In this embodiment, sensible heat capacity is calculated as the amount of heat.

Furthermore, in the inspection method of the present embodiment, the air conditioning capacity of the air conditioner 6 is calculated along with the amount of heat (sensible heat capacity in this example). Based on these heat quantities and air conditioning capacity, the inspection method of the present embodiment inspects the air conditioner 6 and identifies the cause of air conditioning obstruction.

By the way, in order to accurately inspect the air conditioner 6 and identify the cause of air conditioning obstruction, the air conditioning It is desirable to obtain status information when the aircraft 6 is operating.

Conditions suitable for calculation can be appropriately specified according to, for example, the air conditioner 6 (shown in FIG. 1). The conditions of this embodiment include the maximum operating mode of the air conditioner 6 . The maximum operation mode is a state in which the amount of blown air from the air conditioner 6 is maximized and the air conditioner 6 is operated at its maximum capacity (including cooling operation and heating operation). In such a maximum operation mode, the air conditioner 6 can be operated by maximizing its inherent ability. Therefore, based on the situation information in the maximum operation mode, the amount of heat (in this example, sensible heat capacity) and the air conditioning capacity are calculated to determine whether the air conditioner 6 is exhibiting its originally expected capacity. It is possible to accurately identify the cause of air-conditioning obstruction.

Further, even if the air conditioner 6 (shown in FIG. 1) is operated in the maximum operation mode, for example, depending on the air conditioning conditions and the environment (for example, the temperature on the side of the suction port 14), the original temperature of the air conditioner 6 may not be able to perform to their full potential. For example, during heating operation, if the temperature on the side of the suction port 14 is higher than a predetermined temperature (26° C. in this embodiment), even if it is operated in the maximum operation mode, the original capacity is maximized. It may be difficult to demonstrate On the other hand, during cooling operation, if the temperature on the side of the suction port 14 is lower than a predetermined temperature (20° C. in this embodiment), even if the operation is performed in the maximum operation mode, the original capacity is maximized. It can be difficult to get the most out of it.

In the inspection of this embodiment, prior to acquiring the status information, the air conditioner 6 is operated in the maximum operation mode when the temperature on the side of the suction port 14 satisfies a predetermined condition. FIG. 3 is a flow chart showing the processing procedure of the inspection method for the central air-conditioning system 1 of this embodiment.

[Condition judgment step]
In the inspection method of this embodiment, first, the control unit 8 determines whether or not the temperature on the side of the suction port 14 satisfies a predetermined condition (condition determination step S1). In the condition determination step S1 of this embodiment, first, the condition determination section 24A shown in FIG. Then, the condition determination unit 24A is executed by the arithmetic unit 18 to cause the control unit 8 (computer 9) to determine whether the temperature on the inlet port 14 side satisfies a predetermined condition. It can function as a tool.

In the condition determination step S1 of this embodiment, the condition determination unit 24A (control unit 8) transmits a signal to the air conditioner 6 in order to acquire the temperature on the suction port 14 side shown in FIG. Accordingly, the condition determination unit 24A (control unit 8) can acquire the temperature on the suction port 14 side. Then, in the condition determination step S1 of the present embodiment, it is determined whether or not the temperature on the suction port 14 side satisfies a predetermined condition.

As described above, during heating operation, when the temperature on the side of the suction port 14 is higher than a predetermined temperature (26° C. in this embodiment), even if the operation is performed in the maximum operation mode, the original capacity is not achieved. It's difficult to get the most out of it. Therefore, in the condition determination step S1 of this embodiment, the air conditioner 6 is in heating operation and the temperature on the side of the suction port 14 is a predetermined temperature (26° C. in this embodiment) or less. In some cases, it is determined that the condition is satisfied.

On the other hand, during cooling operation, if the temperature on the side of the suction port 14 is lower than a predetermined temperature (20° C. in this embodiment), even if the operation is performed in the maximum operation mode, the original capacity is maximized. It will be difficult to maximize it. Therefore, in the condition determination step S1 of the present embodiment, the air conditioner 6 is in cooling operation, and the temperature on the side of the suction port 14 is a predetermined temperature (20° C. in the present embodiment) or higher. In some cases, it is determined that the condition is satisfied.

When it is determined in the condition determination step S1 that the temperature on the side of the suction port 14 satisfies a predetermined condition ("Yes" in the condition determination step S1), the air conditioner 6 is operated in the maximum operation mode. , the original ability of the air conditioner 6 can be exhibited to the maximum. In this case, the following maximum operating step S2 is carried out.

On the other hand, when it is determined in the condition determination step S1 that the temperature on the side of the suction port 14 does not satisfy the predetermined condition ("No" in the condition determination step S1), the air conditioner 6 is set to the maximum operation mode. Even if it is allowed to drive, it is difficult to maximize its original ability. In this case, condition determination step S1 is performed again.

It may take some time for the temperature on the side of the suction port 14 to reach a state that satisfies the predetermined conditions. Therefore, after a predetermined period of time (for example, 0.5 to 2.0 hours) elapses after a negative (“No”) determination is made in the condition determination step S1, the condition determination step S1 is performed. It may be performed again.

[Maximum operation step]
Next, in the inspection method of the present embodiment, the controller 8 causes the air conditioner 6 to operate in the maximum operation mode (maximum operation step S2). In the maximum operation step S2, first, the maximum operation section 24B shown in FIG. The maximum operation unit 24B is executed by the arithmetic device 18, so that the control unit 8 (computer 9) can function as means for operating the air conditioner 6 in the maximum operation mode.

In the maximum operation step S2 of the present embodiment, the maximum operation unit 24B (control unit 8) transmits a signal to the air conditioner 6 to maximize the blowing air volume of the air conditioner 6 and Drive at maximum capacity. When the air conditioner 6 is in the heating operation, the heating operation is performed in the maximum operation mode. On the other hand, when the air conditioner 6 is in the cooling operation, the cooling operation is performed in the maximum operation mode.

In the inspection method of the present embodiment, the maximum operation step S2 is performed after it is determined in the condition determination step S1 that the temperature on the side of the suction port 14 satisfies a predetermined condition. Therefore, in the maximum operation step S2 of the present embodiment, it is possible to operate the air conditioner 6 by maximizing its inherent ability.

[Memory step]
Next, in the inspection method of this embodiment, the control unit 8 acquires the situation information and stores it in the storage unit 23A (storage step S3). In the storage step S3 of the present embodiment, first, the status information acquisition section 24C shown in FIG. The situation information acquisition section 24C is executed by the arithmetic device 18, so that the control section 8 (computer 9) can function as means for acquiring situation information and storing it in the storage section 23A. The situation information in this embodiment is acquired and stored in chronological order, but may be acquired and stored at arbitrary timings (spots).

In the storage step S3 of the present embodiment, acquisition of status information is first started. In this embodiment, in order to acquire the situation information (in this example, the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air shown in FIG. 1), the situation information acquisition unit 24C ( A control unit 8) transmits a signal to the air conditioner 6 . From this, the arithmetic unit 18 (control unit 8) can acquire the status information.

In the storage step S3 of the present embodiment, the status information is stored at predetermined time intervals (for example, 1 to 20 minutes) from the start of acquisition of the status information until the end of acquisition of the status information. is obtained. As a result, in the storage step S3 of the present embodiment, the situation information can be obtained in time series (at time intervals). The status information acquired in chronological order is stored in the storage unit 23A.

The timing for terminating acquisition of the status information can be appropriately set as long as status information capable of calculating the heat quantity and air-conditioning capacity of the air conditioner 6 can be acquired in the calculation step S4, which will be described later. For example, when the defrosting operation is started during the heating operation, the heating operation in the maximum operation mode is forcibly interrupted. For this reason, in the storing step S3, for example, acquisition of the status information may be terminated after a period of time longer than the time required for the defrosting operation has elapsed since acquisition of the status information was started. This makes it possible to reliably acquire the status information during the heating operation in the maximum operation mode.

[Calculation step]
Next, in the inspection method of the present embodiment, the control unit 8 calculates at least the heat quantity (sensible heat capacity in this example) of the air conditioner 6 based on the stored situation information (calculation step S4). In the calculation step S4 of the present embodiment, the heat quantity and air conditioning capacity of the air conditioner 6 at a certain operating time (arbitrary operating time) or period (arbitrary operating period) are calculated.

In the calculation step S4 of this embodiment, first, the status information stored in the storage section 23A shown in FIG. Then, the calculation unit 24D is executed by the calculation device 18, so that the control unit 8 (computer 9) is a means for calculating the heat quantity (sensible heat capacity in this example) and the air conditioning capacity of the air conditioner 6. can function as

When the situation information is acquired and stored at arbitrary timing (spot), the heat quantity and the air conditioning capacity at the operating time when the situation information is acquired are calculated. On the other hand, when the status information is acquired and stored in chronological order, the calorific value and the air conditioning capacity are calculated based on the status information at any operating time and period. In this embodiment, from each operating time of the status information acquired in time series, the operating time suitable for calculating the heat quantity and air conditioning capacity (in this example, an arbitrary operating time during operation in the maximum operating mode (for example, excluding Except for the time during frost operation, etc.)) is selected. Then, the heat quantity and the air conditioning capacity are calculated based on the status information of the selected operating time.

Among the status information of the selected operating time, for example, the status information at the operating time when the temperature on the side of the suction port 14 is temporarily fluctuating due to the opening of the window or door by the occupant is If used, heat and air conditioning capacity may not be calculated accurately. For this reason, it is desirable to use the status information at the time of operation when the temperature on the side of the suction port 14 is stable (for example, the fluctuation width is ±1° C.).

[calculate heat quantity]
FIG. 4 is a flow chart showing an example of the procedure of the calculation step S4. In the calculation step S4 of the present embodiment, first, the heat quantity (sensible heat capacity in this example) of the air conditioner 6 is calculated (step S41). For example, the following formula (1) is used to calculate the sensible heat capacity (actual sensible heat air conditioning capacity Q _{sensible heat} ). The following formula (1) contains the situation information at the selected operating time (in this example, the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air) shown in FIG. assigned.

ここで、
Ｑ_顕熱：実顕熱空調能力（Ｗ）
Ｖ：吹出し風量（ｍ³／sec）
Ｔ_ｉ：吸込み口側の温度（℃）
Ｔ_ｏ：吹出し口側の温度（℃）
Ｘ_ｉ：吸込み口側の湿度（kg/kg’）
ｈ_ｉ：吸込み口側のエンタルピー（ｋJ/kg’）
ｈ_ｏ：吹出し口側のエンタルピー（ｋJ/kg’）

here,
Q _{sensible heat} : actual sensible heat air conditioning capacity (W)
V: Blowing air volume (m ³ /sec)
T _i : Temperature on the inlet side (°C)
T _o : Temperature on the outlet side (°C)
X _i : Humidity on the inlet side (kg/kg')
h _i : Enthalpy on the inlet side (kJ/kg')
h _o : Enthalpy on outlet side (kJ/kg')

The blown air volume at the selected operating time is substituted for the blown air volume V in the above equation (1). The temperature on the side of the suction port 14 at the selected operating time is substituted for the temperature T _i on the side of the suction port in the above equation (1). The temperature on the side of the outlet 15 at the selected operating time is substituted for the temperature T _o on the side of the outlet in the above equation (1). The humidity (absolute humidity) on the side of the suction port 14 at the selected operating time is substituted for the humidity _Xi on the side of the suction port in the above equation (1). When the humidity on the suction port 14 side is obtained as relative humidity, it is converted to absolute humidity using the temperature and humidity on the suction port 14 side, for example. Accordingly, in step S41, the sensible heat capacity (actual sensible heat air conditioning capacity Q _{sensible heat} ) at the selected operating time can be calculated. Here, in the above equation (1), the outlet-side enthalpy h _o is calculated using the inlet-side humidity _{X i in} the same manner as the inlet-side enthalpy hi. This is based on the premise that the air taken in from the suction port 14 is not dehumidified in the calculation of the sensible heat capacity and is discharged from the outlet 15 while maintaining the humidity (absolute humidity) on the side of the suction port 14. It is because Accordingly, in the present embodiment, since it is not necessary to measure the humidity on the side of the outlet 15, the sensible heat capacity (actual sensible heat air conditioning capacity Q _{sensible heat} ) can be easily calculated.

Also, when calculating the amount of heat (sensible heat capacity in this example) for a certain period (arbitrary operating period), first, based on the same procedure as above, during that period, time intervals (each operating time) From the status information acquired in , the heat quantity at each operating time is calculated. Then, by averaging the heat quantity at each operation time, the heat quantity (average value) for a certain period can be calculated.

As another calculation method, first, an average value of status information for a certain period (average temperature on the inlet 14 side, average temperature on the outlet 15 side, and average blown air volume) is obtained. Then, by substituting these average values into the above formula (1), the average value of the amount of heat can be calculated. Note that the calculation method is not limited to these modes.

[Calculate air conditioning capacity]
Next, in the calculation step S4 of the present embodiment, the air conditioning capacity of the air conditioner 6 is calculated (step S42). For example, the following formula (2) is used to calculate the air conditioning capacity (actual total heat air conditioning capacity Q _{total heat} ). In the following formula (2), the situation information at the selected operating time (in this example, the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15 shown in FIG. 1, and the amount of air blown) are assigned.

ここで、
Ｑ_全熱：実全熱空調能力（Ｗ）
Ｖ：吹出し風量（ｍ³／sec）
Ｔ_ｉ：吸込み口側の温度（℃）
Ｔ_ｏ：吹出し口側の温度（℃）
Ｘ_ｉ：吸込み口側の湿度（kg/kg’）
Ｘ_ｏ：吹出し口側の湿度（kg/kg’）
ｈ_ｉ：吸込み口側のエンタルピー（ｋJ/kg’）
ｈ_ｏ：吹出し口側のエンタルピー（ｋJ/kg’）

here,
Q _{total heat} : actual total heat air conditioning capacity (W)
V: Blowing air volume (m ³ /sec)
T _i : Temperature on the inlet side (°C)
T _o : Temperature on the outlet side (°C)
X _i : Humidity on the inlet side (kg/kg')
X _o : Humidity on the outlet side (kg/kg')
h _i : Enthalpy on the inlet side (kJ/kg')
h _o : Enthalpy on outlet side (kJ/kg')

The blown air volume at the selected operating time is substituted for the blown air volume V in the above equation (2). The temperature on the side of the suction port 14 at the selected operating time is substituted for the temperature T _i on the side of the suction port in the above equation (2). The temperature on the side of the outlet 15 at the selected operating time is substituted for the temperature T _o on the side of the outlet in the above equation (2). The humidity (absolute humidity) on the side of the suction port 14 at the selected operating time is substituted for the humidity _Xi on the suction port side in the above equation (2). When the humidity on the suction port 14 side is obtained as relative humidity, it is converted to absolute humidity using the temperature and humidity on the suction port 14 side, for example.

The humidity (absolute humidity ₎ on the side of the outlet 15 at the selected operating time is substituted for the humidity Xo on the outlet side in the above equation (2). The humidity on the side of the outlet 15 in this embodiment is the humidity of the conditioned air Ac. Here, the status information of the present embodiment does not include the humidity on the outlet 15 side. Therefore, in the present embodiment, the humidity on the side of the outlet 15 is obtained (estimated) based on the situation information (in this example, the humidity on the side of the inlet 14 and the temperature on the side of the outlet 15).

In this embodiment, in order to obtain the humidity (absolute humidity) on the side of the air outlet 15, first, the humidity (absolute humidity) on the side of the air inlet 14 at the selected operating time is used to determine the dew point of the air taken in from the air inlet 14. temperature is calculated. Next, it is determined whether or not the temperature on the outlet 15 side at the selected operating time is equal to or higher than the dew point temperature. When the temperature on the side of the air outlet 15 is equal to or higher than the dew point temperature, the air taken in from the air inlet 14 is not dehumidified by the operation of the air conditioner 6 (dehumidification operation, etc.), and the humidity on the side of the air inlet 14 decreases. It is considered that the air is discharged from the outlet 15 while maintaining the In this case, the humidity (absolute humidity) on the side of the outlet 15 is obtained (presumed) as the same absolute humidity on the side of the suction port 14 . Therefore, the humidity (absolute humidity) on the side of the suction port 14 is substituted for the humidity _Xo on the side of the outlet in the above equation (1).

On the other hand, when the temperature on the side of the outlet 15 is lower than the dew point temperature, the air taken in from the suction port 14 is dehumidified by the operation of the air conditioner 6 (dehumidification operation, etc.) and is discharged from the outlet 15. It is thought that In this case, the humidity (absolute humidity) on the side of the outlet 15 is obtained (presumed) as the saturated absolute humidity at the temperature on the side of the outlet 15 . Therefore, the saturated absolute humidity at the temperature on the side of the outlet 15 is substituted for the humidity _Xo on the outlet side in the above equation (2).

Thus, in the inspection method of the present embodiment, even if the humidity on the side of the outlet 15 is not actually measured, the situation information (in this example, the humidity on the side of the inlet 14 and the temperature on the side of the outlet 15 ) can be easily obtained (guessed). Accordingly, the air conditioner 6 of the present embodiment is not limited to one capable of measuring the humidity on the outlet 15 side. Furthermore, there is no need to separately install, for example, a humidity sensor (not shown) on the outlet 15 side. Therefore, the inspection method of the present embodiment can increase versatility while reducing the introduction cost of the central air-conditioning system 1 .

In step S42 of the present embodiment, for the selected operating time, status information (in this example, the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of air blown), and the predicted outlet The humidity on the 15 side is substituted into the above equation (2). Thereby, the air conditioning capacity (actual total heat air conditioning capacity Q _{total heat} ) at the selected operating time can be calculated.

Also, when calculating the air conditioning capacity for a certain period (arbitrary operating period), first, based on the same procedure as above, from the situation information acquired at time intervals (each operating time) during that period, The air conditioning capacity at each operating time is calculated. By averaging the air conditioning capacity at each operation time, the air conditioning capacity (average value) for a certain period can be calculated.

As another calculation method, first, average values of situation information for a certain period (average temperature and average humidity on the side of the inlet 14, average temperature on the side of the outlet 15, and average air flow rate) are obtained. Furthermore, the average value of the humidity on the outlet 15 side is predicted. Then, by substituting these average values into the above equation (2), the average value of the air conditioning capacity can be calculated. Note that the calculation method is not limited to these modes.

[Step of storing heat quantity information]
Next, in the inspection method of the present embodiment, the control unit 8 stores the calculated heat quantity in the storage unit 23A (heat quantity information storage step S5). In the heat amount information storage step S5 of the present embodiment, the heat amount (in this example, the sensible heat capacity) and the air conditioning capacity calculated in the calculation step S4 are stored in the storage unit 23A. In the calculation step S4, when the heat quantity and air conditioning capacity for a certain period (an arbitrary operating period) are calculated, the heat quantity and air conditioning capacity at each operating time during that period may also be stored. .

[Display step]
Next, in the inspection method of the present embodiment, the controller 8 displays the calculated amount of heat and/or information obtained from the amount of heat (display step S6). In the display step S6 of the present embodiment, first, the amount of heat (sensible heat capacity in this example) and the air conditioning capacity stored in the storage unit 23A shown in FIG. is read into the memory 20 for use. The display unit 24E is executed by the arithmetic unit 18, so that the control unit 8 (computer 9) can function as means for displaying the calculated heat quantity and/or information obtained from the heat quantity.

In the display step S6, one or both of the calculated heat quantity (in this example, the sensible heat capacity) and the information obtained from the heat quantity may be displayed. Information obtained from the amount of heat is not particularly limited as long as the cause of air conditioning inhibition can be identified. In the present embodiment, the sensible heat ratio (ratio of sensible heat capacity to air conditioning capacity) is displayed as information obtained from the amount of heat. The smaller the value of such a sensible heat ratio, the lower the sensible heat capacity relative to the air-conditioning capacity, and the higher the possibility that there is a cause for hindering the air-conditioning.

In the display step S6 of the present embodiment, along with the calculated heat quantity, the calculated capacity information regarding the air conditioning capacity is displayed. As performance information, if it is possible to determine whether or not the air conditioner 6 is exhibiting the originally expected performance, it can be displayed as appropriate. In the display step S6, for example, the calculated air conditioning capacity may be displayed as the capacity information, or the ratio to the expected air conditioning capacity predetermined for the air conditioner 6 (air conditioning capacity/expected air conditioning capacity in this example). may be displayed.

The heat quantity and ability information in the present embodiment are displayed on the output device 22 (display) of the control unit 8, but may be displayed on an output device such as a cloud server (eg, display, printer, etc.).

[Inspection step]
Next, in the inspection method of the present embodiment, inspection of the central air-conditioning system 1 is performed (inspection step S7). In the inspection step S7 of the present embodiment, the air conditioner 6 is inspected (in this example, it is determined whether or not the air conditioner 6 is exhibiting the originally expected capability), and the cause of the air conditioning obstruction is specified. .

The inspection of the central air-conditioning system 1 may be performed by a service person or by the control section 8 based on the heat quantity and capacity information displayed in the display step S6. In this embodiment, the control unit 8 inspects the central air-conditioning system 1 .

In the checking step S7 of this embodiment, first, the checking section 24F of the program section 24 is read into the work memory 20 as shown in FIG. The inspection unit 24</b>F is executed by the calculation device 18 , so that the control unit 8 (computer 9 ) can function as means for inspecting the central air-conditioning system 1 . FIG. 5 is a flow chart showing an example of the processing procedure of the inspection step S7.

[Check the air conditioner]
In the inspection step S7 of this embodiment, first, the air conditioner 6 is inspected (in this example, it is determined whether or not the air conditioner 6 is exhibiting its originally expected capability) (step S71). In step S71 of the present embodiment, if the calculated air conditioning capacity or the ratio to the expected air conditioning capacity (air conditioning capacity/expected air conditioning capacity in this example) is equal to or greater than a predetermined threshold, the air conditioner 6 is judged to be able to exhibit the originally expected ability. On the other hand, if the calculated air-conditioning capacity or the ratio to the expected air-conditioning capacity is less than the threshold, it is determined that the air conditioner 6 is not performing as originally expected. The threshold is appropriately set according to the performance expected of the air conditioner 6 . The threshold of the ratio is set to 95%, for example.

If it is determined in step S71 that the air conditioner 6 is exhibiting the originally expected performance ("Yes" in step S71), it is determined that the air conditioner 6 has no problem. In this case, the next step S72 is performed in the inspection step S7.

On the other hand, if it is determined in step S71 that the air conditioner 6 does not perform as originally expected ("No" in step S71), it is determined that the air conditioner 6 has a problem. Causes of the malfunction include, for example, refrigerant leakage from the air conditioner 6 and inappropriate installation space for the outdoor unit (not shown). In this case, step S73 of repairing (maintaining) the air conditioner 6 is executed.

[Identify the cause of air conditioning obstruction]
Next, in the inspection step S7 of the present embodiment, the cause of air conditioning obstruction is identified (step S72). In step S72 of the present embodiment, whether or not the calculated amount of heat (in this example, sensible heat capacity) or the sensible heat ratio (ratio of sensible heat capacity to air conditioning capacity) is less than a predetermined threshold is judged. The threshold value is appropriately set according to the air conditioning capacity expected of the central air conditioning system 1 . The threshold of the sensible heat ratio is set to 70%, for example.

In step S72, if the amount of heat (sensible heat capacity) or the sensible heat ratio is less than the threshold, it is determined in step S71 that although the air conditioner 6 is exhibiting its original capacity, each living room 5 cannot be sufficiently air-conditioned. not Therefore, in step S72, it is determined that there is a cause of hindrance to air conditioning.

In this embodiment, the existence of an airtight weak point or an insufficient return path 28 is identified as the cause of air conditioning obstruction. In step S72, if the cause of air conditioning obstruction is identified ("Yes" in step S72), step S74 of repairing the house 2 is executed in order to eliminate the air conditioning obstruction cause.

On the other hand, if the calculated amount of heat (sensible heat capacity) or the sensible heat ratio is equal to or greater than the threshold, it is determined that there is no air-conditioning impediment cause because each living room 5 is sufficiently air-conditioned. In this case, since the cause of air conditioning obstruction is not specified (step S72 "No"), the series of processes of the inspection method of the present embodiment ends. If the living room 5 is not properly air-conditioned even though the cause of the air-conditioning obstruction is not specified, for example, a serviceman or the like may analyze the cause of the malfunction of the central air-conditioning system 1 in detail.

[Repair air conditioner]
In step S<b>73 of the present embodiment, a serviceman (technical engineer) or the like is dispatched to the residence 2 to repair the malfunction of the central air-conditioning system 1 . The serviceman can quickly identify the cause of the malfunction of the air conditioner 6, for example, based on the air conditioning capacity displayed in the display step S6 and the status information stored in the storage unit 23A. Then, the serviceman can quickly repair (maintain) the air conditioner 6 based on the identified cause of the problem. As a result, in the inspection method of the present embodiment, the air conditioner 6 can reliably exhibit its originally expected performance.

[Housing Repair]
In step S<b>74 of the present embodiment, a serviceman (engineer) or the like is dispatched to the house 2 . The serviceman repairs the house 2, for example, based on the identified air conditioning obstruction cause. In order to specify the cause of air conditioning obstruction in detail, the heat quantity (sensible heat ratio) displayed in the display step S6, the situation information stored in the storage unit 23A, and the like may be analyzed.

If there is an airtight weak point in the house 2, the weak point can be eliminated by, for example, adding an airtight material to the weak point. If the return path 28 is insufficiently secured, for example, an obstacle on the return path 28 is removed, or an undercut 26 or the like is added to the door 25 provided on the return path 28. Thus, the return path 28 is secured. As a result, in the inspection method of the present embodiment, it is possible to eliminate the cause of hindrance to air conditioning, and to sufficiently air-condition the living room 5 .

[Function of inspection method for central air-conditioning system (central air-conditioning system and program)]
Thus, in the inspection method (the central air conditioning system 1 and the program) of the present embodiment, at least the heat quantity (sensible heat capacity in this example) of the air conditioner 6 is calculated based on the stored situation information, and the The amount of heat or information obtained from the amount of heat (in this example, the sensible heat ratio) is displayed. Furthermore, in the inspection method of the present embodiment, the air conditioning capacity of the air conditioner 6 is calculated and displayed. Thus, with the inspection method of the present embodiment, it is possible to inspect whether or not the air conditioner 6 is exhibiting an appropriate air conditioning capacity. Furthermore, in the inspection method of the present embodiment, even if the air conditioner 6 is exhibiting an appropriate air conditioning capacity, when each living room 5 cannot be sufficiently air-conditioned for some reason on the side of the house 2, The cause of air conditioning inhibition can be specified.

In addition, in the inspection method (entire building air-conditioning system 1 and program) of the present embodiment, using the situation information in the maximum operation mode in which the original capabilities of the air conditioner 6 are maximized, the air conditioner 6 heat quantity (in this example, sensible heat capacity) and air conditioning capacity are calculated. As a result, in the inspection method of the present embodiment, the heat quantity (sensible heat capacity in this example) and the air conditioning capacity of the air conditioner 6 can be calculated under appropriate conditions, so the inspection of the air conditioner 6, And it is possible to accurately identify the cause of air conditioning inhibition.

Furthermore, in the inspection method (central air conditioning system 1 and program) of the present embodiment, the air conditioner 6 can be operated in the maximum operation mode when the temperature on the side of the suction port 14 satisfies a predetermined condition. . As a result, in the inspection method of the present embodiment, it is possible to operate the air conditioner 6 by making the most of the inherent capabilities of the air conditioner 6 . Therefore, in the inspection method of the present embodiment, the heat quantity (sensible heat capacity in this example) and the air conditioning capacity of the air conditioner 6 can be calculated under more appropriate conditions, so the inspection of the air conditioner 6, And it becomes possible to more accurately identify the cause of air conditioning inhibition.

In the inspection method (entire building air-conditioning system 1 and program) of the present embodiment, for example, the amount of heat (sensible heat capacity) and the acquisition of air conditioning capacity can be suppressed. Therefore, in the inspection method of the present embodiment, the inspection of the air conditioner 6 and the identification of the cause of air conditioning obstruction can be performed with high accuracy.

[Method for inspecting central air-conditioning system (second embodiment)]
[Calculation step (second embodiment)]
Although the sensible heat capacity is calculated as the amount of heat of the air conditioner 6 in the calculation step S4 of the above embodiments, the present invention is not limited to such a mode. A latent heat capacity may be calculated as the amount of heat of the air conditioner 6 . In this embodiment, the same reference numerals are assigned to the same configurations as in the previous embodiments, and the description may be omitted.

For example, the following formula (3) is used to calculate the latent heat capacity. A sensible heat capacity (actual sensible heat air conditioning capacity Q _{sensible heat} ) and an air conditioning capacity (actual total heat air conditioning capacity Q _{total heat} ) are substituted into the following equation (3).

ここで、
Ｑ_潜熱：実潜熱空調能力（Ｗ）
Ｑ_全熱：実全熱空調能力（Ｗ）
Ｑ_顕熱：実顕熱空調能力（Ｗ）

here,
Q _{latent heat} : actual latent heat air conditioning capacity (W)
Q _{total heat} : actual total heat air conditioning capacity (W)
Q _{sensible heat} : actual sensible heat air conditioning capacity (W)

Based on the selected operation time status information, the above formula (3) includes the actual total heat air conditioning capacity Q _{total heat} specified by the above formula (2) and the actual actual air conditioning capacity Q specified by the above formula (1). Thermal air conditioning capacity Q and _{sensible heat} are substituted. Then, in the above equation (3), the latent heat capacity at the selected operating time (actual latent heat air conditioning capacity Q _{latent heat} ) is obtained by subtracting the actual sensible heat air conditioning capacity Q sensible _heat from the actual total heat air conditioning capacity Q _{total heat.} can be calculated.

Also, when calculating the latent heat capacity for a certain period (arbitrary operating period), first, based on the above procedure, the air conditioning capacity for a certain period (actual total heat air conditioning capacity Q _{total heat} ) and A sensible heat capacity (actual sensible heat air conditioning capacity Q _{sensible heat} ) is required. By substituting the air conditioning capacity and the sensible heat capacity into the above equation (3), the latent heat capacity for a certain period can be calculated. Note that the calculation method is not limited to these modes.

[Display Step (Second Embodiment)]
In the display step S6 of this embodiment, the latent heat ratio (ratio of latent heat capacity to air conditioning capacity) is displayed as information obtained from the amount of heat. The larger the latent heat ratio, the greater the latent heat capacity relative to the air conditioning capacity, and the higher the possibility that there is an air conditioning impediment factor.

[Inspection Step (Second Embodiment)]
In the inspection step S7 of this embodiment, if the latent heat capacity or the latent heat ratio is larger than a predetermined threshold value in the step S72 of identifying the cause of air conditioning inhibition, each room 5 is not sufficiently air-conditioned. It is determined that a blocking cause exists. On the other hand, when the latent heat capacity or the latent heat ratio is equal to or less than the threshold, it is determined that each living room 5 is sufficiently air-conditioned and that there is no air-conditioning impediment factor. The threshold value is appropriately set according to the air conditioning capacity expected of the central air conditioning system 1 . The latent heat ratio threshold is set to 30%, for example.

Thus, in the inspection method (entire building air conditioning system and program) of this embodiment, the latent heat capacity is calculated as the heat quantity of the air conditioner 6, and the heat quantity or information obtained from the heat quantity (in this example, the latent heat ratio) is displayed. be done. As a result, in the inspection method of this embodiment, as in the previous embodiments, it is inspected whether the air conditioner 6 is exhibiting an appropriate air-conditioning capability, and the appropriate air-conditioning capability is exhibited. Even in such a case, it is possible to identify the cause of air conditioning obstruction.

Although the latent heat capacity is calculated in the calculation step S4 of this embodiment, the sensible heat capacity may also be calculated. Furthermore, in the display step S6 of this embodiment, the latent heat capacity and the latent heat ratio are displayed as information obtained from the heat quantity and the heat quantity, but the sensible heat capacity and the sensible heat ratio may also be displayed together. As a result, in the inspection method of this embodiment, it is possible to inspect the air conditioner 6 and identify air conditioning impeding factors based on both the sensible heat capacity (sensible heat ratio) and the latent heat capacity (latent heat ratio). can.

[Method for Determining Performance of Central Air-Conditioning System (Third Embodiment)]
In the embodiments so far, the status information includes the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air shown in FIG. 1, but is not limited to such a mode. For example, the status information may further include outside temperature. In this embodiment, the same reference numerals are assigned to the same configurations as in the previous embodiments, and the description may be omitted.

The outside air temperature can be measured as appropriate. The outside air temperature in this embodiment is measured by, for example, an outside air temperature sensor 29 (shown in FIG. 1). As shown in FIG. 1, the outside air temperature sensor 29 may be a temperature sensor provided in the opening 31 of the foundation 30 or a temperature sensor provided in the outdoor unit (not shown) of the air conditioner 6. The outside air temperature sensor 29 is connected to the controller 8 (computing device 18 (shown in FIG. 2)). Thereby, the control unit 8 can acquire the outside air temperature by transmitting the outside air temperature sensor 29 signal, and can transmit the acquired outside air temperature to the arithmetic unit 18 .

[Storage Step (Third Embodiment)]
In the storage step S3 of this embodiment, in addition to the temperature and humidity on the side of the inlet 14, the temperature on the side of the outlet 15, and the amount of blown air, the outside air temperature is acquired as status information. Thereby, in the performance determination method of this embodiment, the outside air temperature when the air conditioner 6 is operated in the maximum operation mode can be specified.

[Calculation step (third embodiment)]
By the way, the standard (eg, JIS-B8616, etc.) stipulates that the air-conditioning capacity (rated capacity) should be obtained at, for example, a predetermined outside air temperature. For example, it is determined that the air conditioning capacity during heating operation is obtained when the outside air temperature is 7°C. On the other hand, it is stipulated that the air conditioning capacity during cooling operation is obtained when the outside temperature is 35°C. It should be noted that the outside air temperature is not limited to such a temperature, and can be appropriately changed according to the revision of standards, the type of standards to be applied, and the like.

In the calculation step S4 of this embodiment, the air conditioning capacity and heat quantity are calculated for the operation time or period when the outside air temperature satisfies a predetermined condition (in this example, during heating operation: 7°C, during cooling operation: 35°C). be done. Thus, in the performance determination method of this embodiment, the rated capacity can be calculated, so that it is possible to accurately determine the quality of the capacity of the air conditioner 6 based on the rated capacity in the inspection step S7. Become.

In the performance determination method of this embodiment, in the condition determination step S1, it is determined whether or not the outside air temperature satisfies a predetermined condition (in this example, during heating operation: 7°C, during cooling operation: 35°C). may In this case, since the maximum operation step S2 and the storage step S3 are performed when the outside air temperature satisfies the conditions, it is possible to reliably acquire the situation information when the outside air temperature satisfies the predetermined conditions. Therefore, it is possible to reliably calculate the rated capacity.

[Method for inspecting central air-conditioning system (fourth embodiment)]
In the above-described embodiments, the calculation step S4 is executed when it is determined in the condition determination step S1 that the temperature on the side of the suction port 14 satisfies the predetermined condition, but the present invention is not limited to such a mode. For example, the calculating step S4 may be performed based on predetermined schedule information. In this embodiment, the same reference numerals are assigned to the same configurations as in the previous embodiments, and the description may be omitted.

The schedule information is, for example, operating times or periods set based on calendar information (information on dates and times) set in the control unit 8 . The schedule information can be arbitrarily set, and for example, an operation time or period suitable for calculating the amount of heat (including sensible heat capacity and latent heat capacity) and air conditioning capacity can be set.

In the inspection method of this embodiment, when it is determined in the condition determination step S1 that the current time corresponds to the schedule information (operation time or period), the maximum operation step S2, the storage step S3 and the calculation step S4 are executed. As a result, in the inspection method of this embodiment, the calculation step S4 (including the maximum operation step S2 and the storage step S3) is executed during an operation time or period (for example, spring or autumn) that is not suitable for calculating the air conditioning capacity. can prevent it from being done. As a result, in the inspection method of this embodiment, unnecessary calculation of the air conditioning capacity can be suppressed, and pressure on the capacity of the storage unit 23A can be prevented.

The schedule information may be set only when the air conditioning of the central air conditioning system 1 is found to have a problem. As a result, in the inspection method of this embodiment, it is possible to prevent the calculation step S4 (including the maximum operation step S2 and the storage step S3) from being executed in the central air-conditioning system 1 in which no problem is found. Calculation of the required air conditioning capacity and the like can be suppressed.

Although the particularly preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be modified in various ways.

1 whole building air-conditioning system 2 house 5 living room 6 air conditioner 7 duct 8 control unit 14 suction port 15 outlet Ac conditioned air

Claims (8)

Inspection of a residential air-conditioning system including an air conditioner, a duct for supplying air conditioned by the air conditioner to a plurality of living rooms, and a controller communicably connected to the air conditioner. a method,
a storage step in which the control unit acquires status information including at least the temperature on the air inlet side and the air outlet side of the air conditioner and the amount of blown air, and stores the status information in a storage unit;
a calculation step in which the control unit calculates a heat quantity including at least a sensible heat capacity and a latent heat capacity of the air conditioner based on the stored situation information;
a display step in which the control unit displays the calculated amount of heat and/or information obtained from the amount of heat;
A method for inspecting the air-conditioning system for the entire building, including The control unit further includes a maximum operation step of operating the air conditioner in a maximum operation mode,
2. The inspection method for a central air-conditioning system according to claim 1, wherein said calculating step uses said situation information in said maximum operation mode to calculate said amount of heat. 3. The inspection method for a central air-conditioning system according to claim 2, wherein said control unit causes said air conditioner to execute said maximum operation step when the temperature on said inlet side satisfies a predetermined condition. 4. The display step displays at least one of a sensible heat ratio, which is the ratio of the sensible heat capacity to the air conditioning capacity, and a latent heat ratio, which is the ratio of the latent heat capacity to the air conditioning capacity. A method for inspecting a central air-conditioning system according to item 1. 5. The inspection method for a central air-conditioning system according to any one of claims 1 to 4, wherein said calculating step is executed based on predetermined schedule information. 6. The inspection method for a central air-conditioning system according to any one of claims 1 to 5, further comprising a calorific value information storage step in which said control unit stores said calculated calorific value in said storage unit. For inspecting a residential air-conditioning system including an air conditioner, a duct for supplying air conditioned by the air conditioner to a plurality of living rooms, and a computer communicably connected to the air conditioner. A program for causing the computer to execute the method of
to the computer;
a storage step of acquiring status information including at least the temperature of each of the air inlet side and the air outlet side of the air conditioner and the amount of blown air and storing it in a storage unit;
a calculating step of calculating a heat quantity including at least a sensible heat capacity and a latent heat capacity of the air conditioner based on the stored situation information;
a display step of displaying the calculated amount of heat and/or information obtained from the amount of heat;
program. A residential central air conditioning system,
an air conditioner;
a duct for supplying air conditioned by the air conditioner to a plurality of living rooms;
a control unit communicably connected to the air conditioner,
The control unit includes a storage unit for storing status information including at least the temperature of each of the air inlet side and the air outlet side of the air conditioner and the amount of blown air;
a calculation unit for calculating a heat quantity including at least sensible heat capacity and latent heat capacity of the air conditioner based on the situation information;
A display unit for displaying the amount of heat and / or information obtained from the amount of heat,
Whole building air conditioning system.

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