JP6998758B2 - Air conditioning system - Google Patents

Description

The present invention relates to an air conditioning system that supplies air-conditioned air generated by an air conditioner to an air-conditioned space.

The above-mentioned air conditioning system includes an air conditioner that generates air-conditioned air having a target air supply temperature, and a variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air. The variable air volume unit controls the amount of air supplied to the air-conditioned air to the air-conditioned space so that the room temperature of the air-conditioned space becomes the set temperature set by the user's human operation (for example, Patent Document). See 1.).

In the system described in Patent Document 1, the set temperature is changed in a predetermined pattern, and the indoor temperature of the air-conditioned space is swung up and down to improve the comfort. For example, in the cooling operation in summer, by lowering the set temperature to a temperature lower than the temperature required by the user or the like, it is possible to obtain a feeling of cooling higher than the actual temperature. Further, by gradually increasing the set temperature, it is possible to obtain a feeling of coldness that is almost the same as the required temperature.

In the predetermined pattern, in addition to the change pattern of the set temperature of how to change the set temperature, the change of the supply air volume of how the supply air volume by the variable air volume unit is changed according to the change of the set temperature. The pattern is set. As a result, not only the set temperature but also the amount of air supplied to the air-conditioned space is changed in a predetermined pattern.

Japanese Unexamined Patent Publication No. 2010-190434

In the system described in Patent Document 1, since the set temperature is changed to a temperature lower or higher than the temperature originally required by the user or the like, the indoor temperature of the air-conditioned space is higher than the temperature originally required. It becomes difficult to maintain the indoor temperature of the air-conditioned space at the originally required temperature. Therefore, it is not possible to meet the demands of users and the like, and there is a possibility that comfort will be impaired.

Further, in the system described in Patent Document 1, in order to change the air supply air volume, how the air supply air volume by the variable air volume unit is changed according to the change of the set temperature in a predetermined pattern. It is also necessary to set the change pattern of, which causes complexity. Moreover, the variable air volume unit not only controls the air supply air volume of the air conditioning air to the air conditioning target space so that the indoor temperature of the air conditioning target space becomes the set temperature, but also controls the air supply air volume set in a predetermined pattern. Therefore, it is necessary to control the amount of air-conditioned air supplied to the air-conditioned space, which leads to complicated control configuration.

In view of this situation, a main problem of the present invention is to provide an air conditioning system capable of improving comfort while being able to change the air supply air volume with a simple configuration.

The first characteristic configuration of the present invention is an air conditioner that generates conditioned air at a target air supply temperature.
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air-conditioning temperature control unit controls the target air-conditioning temperature when the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space continues to be out of the predetermined range. The point is that the execution is stopped and the target air supply temperature is changed so that the air supply air volume to the air-conditioned space is changed to the predetermined range side .

According to this configuration, when the target air supply temperature control unit executes the target air supply temperature control, the target air supply temperature is changed in a predetermined pattern. Changes. Since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space after the change, the air supply air volume to the air conditioning target space can be changed.

For example, when the air-conditioned space is cooled and the target air supply temperature is changed to the lowering side, the amount of air supplied to the air-conditioned space can be changed to the lowering side. On the contrary, when the target air supply temperature is changed to the rising side, the amount of air supplied to the air-conditioned space can be changed to the increasing side. In this way, the amount of air supplied to the air-conditioned space can be changed by utilizing the control of the variable air volume unit simply by performing a simple control of changing the target air supply temperature in a predetermined pattern. Moreover, since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space, the air supply air volume to the air conditioning target space can be appropriately covered while appropriately covering the load of the air conditioning target space. Can be changed.

When the load on the air-conditioned space is small, the amount of air supplied to the air-conditioned space is usually reduced by controlling the variable air volume unit, which may weaken the feeling of air flow. Even in such a case, the target air supply temperature control unit can change the target air supply temperature to the rising side by executing the target air supply temperature control, and air conditioning is performed according to the change in the air supply target temperature. The amount of air supplied to the target space can be increased. Therefore, it is possible to prevent the feeling of airflow from being weakened, and it is possible to improve the comfort of the user and the like. Further, by increasing the amount of air supplied to the air-conditioned space, it is possible to promote air mixing and air diffusion in the air-conditioned space, and it is possible to make the indoor temperature distribution and the air quality distribution suitable. .. Further, for example, in the case where the return air of the air-conditioned space is mixed and the outside air is supplied to the air-conditioned space, the amount of air supplied to the air-conditioned space is reduced by increasing the amount of air supplied to the air-conditioned space. Therefore, it is possible to prevent the outside air supply from becoming insufficient, and it is possible to supply a sufficient outside air.

Further, according to this configuration, the target air supply temperature control unit continues to be in a state where the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space is out of the predetermined range. Assuming that there is an inconvenience in air-conditioning the air-conditioned space, it is possible to stop the execution of the target air supply temperature control and change the target air supply temperature. By changing the target air supply temperature, the amount of air supplied to the air-conditioned space can be changed within a predetermined range, and the air-conditioned space can be appropriately air-conditioned.

The second characteristic configuration of the present invention is an air conditioner that generates conditioned air at a target air supply temperature.
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air-conditioning temperature control unit controls the target air-conditioning temperature when the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space continues to be out of the predetermined range. The point is that the predetermined pattern is changed so that the amount of air supplied to the air-conditioned space is changed to the predetermined range side.

According to this configuration, when the target air supply temperature control unit executes the target air supply temperature control, the target air supply temperature is changed in a predetermined pattern. Changes. Since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space after the change, the air supply air volume to the air conditioning target space can be changed.
For example, when the air-conditioned space is cooled and the target air supply temperature is changed to the lowering side, the amount of air supplied to the air-conditioned space can be changed to the lowering side. On the contrary, when the target air supply temperature is changed to the rising side, the amount of air supplied to the air-conditioned space can be changed to the increasing side. In this way, the amount of air supplied to the air-conditioned space can be changed by utilizing the control of the variable air volume unit simply by performing a simple control of changing the target air supply temperature in a predetermined pattern. Moreover, since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space, the air supply air volume to the air conditioning target space can be appropriately covered while appropriately covering the load of the air conditioning target space. Can be changed.
When the load on the air-conditioned space is small, the amount of air supplied to the air-conditioned space is usually reduced by controlling the variable air volume unit, which may weaken the feeling of air flow. Even in such a case, the target air supply temperature control unit can change the target air supply temperature to the rising side by executing the target air supply temperature control, and air conditioning is performed according to the change in the air supply target temperature. The amount of air supplied to the target space can be increased. Therefore, it is possible to prevent the feeling of airflow from being weakened, and it is possible to improve the comfort of the user and the like. Further, by increasing the amount of air supplied to the air-conditioned space, it is possible to promote air mixing and air diffusion in the air-conditioned space, and it is possible to make the indoor temperature distribution and the air quality distribution suitable. .. Further, for example, in the case where the return air of the air-conditioned space is mixed and the outside air is supplied to the air-conditioned space, the amount of air supplied to the air-conditioned space is reduced by increasing the amount of air supplied to the air-conditioned space. Therefore, it is possible to prevent the outside air supply from becoming insufficient, and it is possible to supply a sufficient outside air.
Further, according to this configuration, the target air supply temperature control unit keeps the state where the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space is out of the predetermined range. It is possible to change a predetermined pattern because it is inconvenient to air-condition the space to be air-conditioned. By changing this predetermined pattern, the amount of air supplied to the air-conditioned space can be changed within a predetermined range, and the air-conditioned space can be appropriately air-conditioned.

The third characteristic configuration of the present invention is that the predetermined pattern in the target air supply temperature control is set based on the reference target air supply temperature based on the load state of the air-conditioning target space and the reference target air supply temperature, and is set as a reference target supply. It is set in a pattern that periodically changes the target air temperature to multiple target air temperatures that are different from the air temperature.
The target air temperature control unit changes the reference target air temperature in the target air temperature control so that the amount of air supplied to the air-conditioned space is changed to the predetermined range side. The point is that it is configured to change.

According to this configuration, a predetermined pattern can be changed by a simple control of changing the reference target air supply temperature, and the configuration can be simplified. Moreover, since the reference target air supply temperature as a reference is changed in the predetermined pattern, the predetermined pattern can be appropriately changed to the pattern for keeping the air supply air volume to the air conditioning target space within the predetermined range, and the air conditioning target. The space can be properly air-conditioned.

The fourth characteristic configuration of the present invention is an air conditioner that generates conditioned air at a target air supply temperature.
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air supply temperature control unit is the target air supply temperature when the deviation between the indoor temperature of the air-conditioned space and the set temperature is within a predetermined range and the air supply air volume to the air-conditioned space is equal to or less than the predetermined air volume. The point is that it is configured to perform control.

According to this configuration, when the target air supply temperature control unit executes the target air supply temperature control, the target air supply temperature is changed in a predetermined pattern. Changes. Since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space after the change, the air supply air volume to the air conditioning target space can be changed.
For example, when the air-conditioned space is cooled and the target air supply temperature is changed to the lowering side, the amount of air supplied to the air-conditioned space can be changed to the lowering side. On the contrary, when the target air supply temperature is changed to the rising side, the amount of air supplied to the air-conditioned space can be changed to the increasing side. In this way, the amount of air supplied to the air-conditioned space can be changed by utilizing the control of the variable air volume unit simply by performing a simple control of changing the target air supply temperature in a predetermined pattern. Moreover, since the variable air volume unit controls the air supply air volume to the air conditioning target space based on the air conditioning state of the air conditioning target space, the air supply air volume to the air conditioning target space can be appropriately covered while appropriately covering the load of the air conditioning target space. Can be changed.
When the load on the air-conditioned space is small, the amount of air supplied to the air-conditioned space is usually reduced by controlling the variable air volume unit, which may weaken the feeling of air flow. Even in such a case, the target air supply temperature control unit can change the target air supply temperature to the rising side by executing the target air supply temperature control, and air conditioning is performed according to the change in the air supply target temperature. The amount of air supplied to the target space can be increased. Therefore, it is possible to prevent the feeling of airflow from being weakened, and it is possible to improve the comfort of the user and the like. Further, by increasing the amount of air supplied to the air-conditioned space, it is possible to promote air mixing and air diffusion in the air-conditioned space, and it is possible to make the indoor temperature distribution and the air quality distribution suitable. .. Further, for example, in the case where the return air of the air-conditioned space is mixed and the outside air is supplied to the air-conditioned space, the amount of air supplied to the air-conditioned space is reduced by increasing the amount of air supplied to the air-conditioned space. Therefore, it is possible to prevent the outside air supply from becoming insufficient, and it is possible to supply a sufficient outside air.
Further, according to this configuration, the target supply is provided under suitable conditions that the deviation between the indoor air temperature of the air-conditioned space and the set temperature is within a predetermined range and the air supply air volume to the air-conditioned space is equal to or less than the predetermined air temperature. The air temperature control unit can control the target air supply temperature. As a result, the effect of executing the target air supply temperature control such as improvement of comfort can be fully exhibited, and the air conditioning system becomes very easy to use for the user and the like.

The figure which shows the schematic structure of the air conditioning system. Flow chart showing the operation when cooling the air-conditioned space Flow chart showing operation in target air supply temperature control Graph showing changes in predetermined pattern and VAV air volume Flow chart showing operation in target air supply temperature control

An embodiment of the air conditioning system according to the present invention will be described with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, the air conditioning system includes an air conditioner 2 that generates air conditioning air A1, an air supply passage 3 that supplies air conditioning air A1 generated by the air conditioning machine 2 to an air conditioning target space 1, and air conditioning air A1. A variable air volume unit 4 that controls the amount of air supplied to the air-conditioned space 1 and a target air supply temperature control unit 5 that controls the target air temperature of the air-conditioned air A1 generated by the air conditioner 2 are provided. ..

In this embodiment, as shown in FIG. 1, the air-conditioned space 1 (one living room) is divided into a first area 1a and a second area 1b in a state where they communicate with each other. Therefore, the downstream portion of the air supply passage 3 is branched into a first branch air supply passage 3a corresponding to the first area 1a and a second branch air supply passage 3b corresponding to the second area 1b. The variable air volume unit 4 is arranged in each of the first branch air volume unit 3a and the second branch air supply path 3b, and is a second variable air volume unit 4a corresponding to the first area 1a and a second area 1b corresponding to the second area 1b. A variable air volume unit 4b is provided. In this way, the number of areas, the number of branch paths in the supply air passage 3, and the number of variable air volume units 4 are set to be the same. The number of areas of the air-conditioned space 1 can be appropriately changed, and the number of branch paths and the variable air volume unit 4 can be changed according to the number of areas.

The air conditioner 2 is arranged, for example, in a space adjacent to the air conditioning target space 1. The air conditioner 2 includes an air conditioning processing unit 21 that air-conditions the return air A2 from the air-conditioned space 1 to generate air-conditioned air A1 having a target supply air temperature. The air conditioner 2 is configured to be able to take in the outside air A3, and not only the return air A2 from the air-conditioned space 1 but also the taken-in outside air A3 or a mixture of the outside air A3 and the return air A2. , The air conditioning processing unit 21 is configured to be capable of air conditioning processing.

The air conditioner 2 is connected to a return air passage 6 that supplies the return air A2 from the air conditioning target space 1 to the air conditioner 2. The return air passage 6 is open to the ceiling space 7 of the air conditioning target space 1, and is configured to supply the return air A2 from the air conditioning target space 1 to the air conditioner 2 through the ceiling space 7. An outside air intake path 8 for taking in the outside air A3 is connected to an intermediate portion of the return air passage 6, and the taken-in outside air A3 or a mixture of the outside air A3 and the return air A2 is transferred to the air conditioner 2. It is configured to supply.

The air conditioner 2 is provided with an air conditioning fan 22 in addition to the air conditioning processing unit 21. By operating the air conditioning fan 22, the air conditioner 2 takes in air (only the return air A2, only the outside air A3, and the mixture of the return air A2 and the outside air A3) and generates the air conditioning air A1 in the air conditioning processing unit 21. , The generated conditioned air A1 is configured to be supplied to the conditioned space 1. The air conditioning processing unit 21 is composed of a cold water coil that cools the supplied air by exchanging heat between a heat medium (for example, cold water) circulated and supplied from a heat source machine (not shown) and the supplied air. There is. Incidentally, the air conditioning processing unit 21 may be a cold / hot water coil that not only cools the supplied air but also heats the air supplied by the heat medium (for example, hot water) supplied from the heat source machine. It can be done, and the configuration can be changed as appropriate.

Although not shown, the air conditioner 2 is provided with an air conditioner control unit that controls the air conditioning processing unit 21. The air conditioner control unit controls the air conditioning processing unit 21 by controlling the supply amount of the heat medium supplied to the air conditioning processing unit 21. The air conditioner control unit controls the operating state of the air conditioning fan 22, and also controls the air conditioning processing unit 21 so that the temperature of the generated air conditioning air A1 becomes the target air supply temperature.

The variable air volume unit 4 is provided with, for example, a damper or the like that can adjust the flow path area of the air supply passage 3, and by adjusting the flow path area of the supply air passage 3, the air-conditioned air A1 can be moved to the air-conditioned space 1. The air supply air volume is adjustable. The variable air volume unit 4 determines the amount of air supplied to the air-conditioned space 1 of the air-conditioned air A1 so that the indoor temperature of the air-conditioned space 1 becomes the set temperature based on the air-conditioned state (load state) of the air-conditioned space 1. I am in control. Here, the indoor temperature of the air-conditioned space 1 can be the detected temperature of the temperature sensors T1 and T2 arranged in the air-conditioned space 1, and the set temperature is the temperature set by the user's remote control operation or the like. It has become.

In this embodiment, since the air-conditioned space 1 is divided into a plurality of areas 1a and 1b, the variable air volume unit 4 controls the air supply air volume for each of the areas 1a and 1b separately. The first variable air volume unit 4a corresponding to the first area 1a controls the air supply air volume of the conditioned air A1 to the first area 1a so that the detected temperature of the temperature sensor T1 becomes the room temperature. The second variable air volume unit 4b corresponding to the second area 1b controls the air supply air volume of the conditioned air A1 to the second area 1b so that the detected temperature of the temperature sensor T2 becomes the room temperature.

In this air conditioning system, based on the load state of the air conditioning target space 1, the target air supply temperature in the air conditioner 2 is obtained in order to cover the load. In normal control, when the target air supply temperature is obtained, the air conditioner 2 generates air-conditioned air A1 having the target air-conditioning temperature, and supplies the air-conditioned air A1 to the air-conditioned space 1 through the supply air passage 3. Further, the variable air volume unit 4 controls the amount of air supplied to the air-conditioned space 1 of the air-conditioned air A1 so that the indoor temperature of the air-conditioned space 1 becomes the set temperature.

To add an explanation about how to obtain the target air supply temperature, the target air supply temperature is the set temperature set by the user's manual operation using a remote control or the like, the room temperature of the air conditioning target space 1, the set temperature, and the room. It can be obtained by using the relationship between the target air supply temperature and the deviation from the temperature. The relationship between the target air supply temperature and the deviation between the set temperature and the room temperature is, for example, a relationship indicating how much the target air supply temperature should be according to the magnitude of the deviation, and is used for experiments and other various conditions. It is preset based on. The indoor temperature of the air-conditioned space 1 can be obtained from the detected temperatures of the temperature sensors T1 and T2 arranged in the air-conditioned space 1. For example, when a plurality of temperature sensors T1 and T2 are provided, the indoor temperature (average value) of the air-conditioned space 1 can be obtained by obtaining the average value of the detected temperatures of the respective temperature sensors T1 and T2. Further, when cooling is performed, the highest detected temperature among the detected temperatures of the plurality of temperature sensors T1 and T2 can be acquired as the indoor temperature of the air conditioning target space 1.

In this air-conditioning system, not only normal control is performed, but also control for changing the amount of air supplied to the air-conditioned space 1 of the air-conditioned air A1 can be executed by positively changing the target air supply temperature. Has been done. Therefore, the target air supply temperature control unit 5 that executes the target air supply temperature control that changes the target air supply temperature of the conditioned air A1 generated by the air conditioner 2 in a predetermined pattern is provided.

The operation of the target air supply temperature control will be described later, but a predetermined pattern will be described. As the predetermined pattern, for example, as shown in FIG. 4, a pattern is set in which the target air supply temperature is periodically changed (every time a predetermined time elapses) between the reference target air supply temperature and a plurality of setting target air supply temperatures. can do. The reference target air supply temperature can be obtained based on the load state of the air-conditioned space 1. For example, as described above, the target air supply temperature obtained by using the set temperature, the room temperature, and the relationship between the set temperature and the target air supply temperature with respect to the deviation between the set temperature and the room temperature can be set as the reference target air supply temperature. .. The target air supply temperature for setting is set to a temperature different from the reference target air supply temperature based on the reference target air supply temperature. In the one shown in FIG. 4, for example, as the target air supply temperature for setting, the target air supply temperature for setting on the rising side, which is higher than the reference target air supply temperature by a predetermined temperature (for example, 2 ° C.), and the reference target air supply temperature. A target air supply temperature for setting on the lower side, which is a predetermined temperature (for example, 2 ° C.) lower than the air temperature, is set. As a result, the reference target air supply temperature is set to 16 ° C, the setting target air temperature on the ascending side is set to 18 ° C, and the setting target air supply temperature on the descending side is set to 14 ° C. It can be changed up and down around the target air supply temperature.

Hereinafter, the operation when cooling the air-conditioned space 1 will be described with reference to the flowcharts of FIGS. 2 and 3. Incidentally, FIG. 2 is a flowchart of the entire air conditioning system when cooling the air conditioning target space 1, and FIG. 3 is a flowchart of execution of target air supply temperature control by the target air supply temperature control unit 5.

First, the set temperature in the air-conditioned space 1 is set by human operation by the user or the like (step # 1). The setting of this set temperature makes it possible to set the overall set temperature in the entire air-conditioned space 1, and the overall set temperature can be set as the set temperature. Further, the area set temperature in each of the areas 1a and 1b can be set, and the average temperature of the area set temperature can be set as the set temperature. Further, in the case of cooling, the lowest area set temperature can be set as the set temperature.

Next, a predetermined pattern for controlling the target air supply temperature is set (step # 2). In the setting of this predetermined pattern, for example, a predetermined time for periodically changing the target air supply temperature, a reference target air supply temperature, and a setting target air supply temperature are set. For example, in the one shown in FIG. 4, the predetermined time is set to 10 minutes, and the target air supply temperature obtained in step # 3 is set as the reference target air supply temperature. In addition, as the target air supply temperature for setting, the target air supply temperature for setting on the rising side, which is higher than the standard target temperature by a predetermined temperature (2 ° C), and the target air supply temperature for setting, which is lower than the standard target temperature by a predetermined temperature (2 ° C), are set. The target air supply temperature is set. The predetermined pattern can be set based on an artificial operation by the user or the like, but the target air supply temperature control unit 5 can automatically set the predetermined pattern.

The target air supply temperature control unit 5 calculates the target air supply temperature (step # 3). As the target air-conditioning state of the air-conditioning target space 1, the set temperature in the air-conditioning target space 1 is set by human operation by the user or the like (see step # 1). Therefore, as described above as a method of obtaining the target air supply temperature, the target air supply temperature control unit 5 determines the deviation between the set set temperature and the indoor temperature of the air-conditioning target space 1, and the target air supply temperature with respect to the deviation. The target air supply temperature is obtained using the relationship.

When the target air supply temperature control unit 5 obtains the target air supply temperature, the deviation between the set temperature and the room temperature is obtained, and it is determined whether or not the deviation is within a predetermined range (step #). 4). Further, when the target air-conditioning temperature control unit 5 supplies the conditioned air A1 having the obtained target air-conditioning temperature to the air-conditioned space 1, the variable air volume unit 4 required to cover the load state of the air-conditioned space 1. The amount of air supplied to the air-conditioned space 1 by the variable air volume unit 4 (hereinafter, the amount of air supplied to the air-conditioned space 1 by the variable air volume unit 4 is referred to as "VAV air volume") is obtained, and the VAV air volume is a predetermined air volume (80%). ) It is determined whether or not it is the following (step # 5).

The target air supply temperature control unit 5 is the target air supply temperature when the deviation between the set temperature and the indoor temperature of the air-conditioned space 1 is within a predetermined range and the VAV air volume is equal to or less than the predetermined air volume (80%). Control is performed (in the case of Yes in step # 4, in the case of Yes in step # 5, step # 6). The operation in the target air supply temperature control will be described later.

When the target air supply temperature control unit 5 satisfies either the condition that the deviation between the set temperature and the room temperature is out of the predetermined range and the condition that the VAV air volume exceeds the predetermined air volume (80%). , Normal control is performed (in the case of No in step # 4, step # 7 in the case of No in step # 5).

In the normal control, as described above, the amount of air supplied to the air-conditioned space 1 is controlled while supplying the air-conditioned air A1 having the obtained air supply target temperature to the air-conditioned space 1. The control unit for the air conditioner controls the air conditioning processing unit 21 so that the temperature of the air conditioning air A1 becomes the obtained target air supply temperature, so that the air conditioner 2 generates the air conditioning air A1 having the target air supply temperature. ing. The variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air-conditioned space 1 becomes the set temperature.

The operation in the target air supply temperature control will be described with reference to FIG.
In the target air supply temperature control, the target air supply temperature control unit 5 changes the target air supply temperature in a predetermined pattern (step # 11). For example, as shown in FIG. 4, as a predetermined pattern, a reference target air supply temperature (16 ° C.), a target air supply temperature for setting on the ascending side (18 ° C.), and a target air supply temperature for setting on the descending side (14 ° C.) A case where a pattern for changing the target air supply temperature is set periodically (every time a set time (for example, 10 minutes) elapses) will be described.

As shown in FIG. 4, the target air supply temperature control unit 5 first sets the target air supply temperature to the reference target air supply temperature (for example, 16 ° C.). As a result, the air conditioner 2 generates air-conditioned air A1 having a reference target air temperature, and supplies the air-conditioned air A1 to the air-conditioned space 1 through the supply air passage 3. At this time, the variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air-conditioned space 1 becomes the set temperature. In this way, the VAV air volume is controlled so as to cover the load state of the air-conditioned space 1 while supplying the air-conditioned air A1 having the reference target air temperature to the air-conditioned space 1. In the one shown in FIG. 4, the VAV air volume is initially 80%, and by supplying the air-conditioned air A1 to the air-conditioned space 1, the indoor temperature of the air-conditioned space 1 (the detection temperature of the temperature sensors T1 and T2). ) And the set temperature become smaller, so the VAV air volume is gradually decreasing.

When a predetermined time (for example, 10 minutes) has elapsed after setting the target air supply temperature to the reference target air supply temperature, the target air supply temperature control unit 5 sets the target air supply temperature on the lower side. Change to (14 ° C). As a result, the air conditioner 2 generates the conditioned air A1 having the target supply air temperature for setting on the lower side, and supplies the conditioned air A1 to the conditioned space 1 through the supply air passage 3. Also at this time, the variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air conditioning target space 1 becomes the set temperature.

The target air supply temperature control unit 5 changes the target air supply temperature from the reference target air supply temperature (16 ° C.) to the lower setting target air supply temperature (14 ° C.) by executing the target air supply temperature control. Then, the temperature of the air-conditioned air A1 supplied to the air-conditioned space 1 drops from the reference target air supply temperature (16 ° C.) to the lower setting target air supply temperature (14 ° C.). The air temperature state of 1 changes. Therefore, when the air-conditioning state of the air-conditioning target space 1 changes as the variable air volume unit 4 changes the target air supply temperature to the setting target air-conditioning temperature on the lower side, the air-conditioning state of the air-conditioning target space 1 after the change. The VAV air volume will be controlled based on the above.

When the temperature of the air-conditioned air A1 supplied to the air-conditioned space 1 drops from the reference target air supply temperature (16 ° C.) to the lower setting target air supply temperature (14 ° C.), the room temperature and the set temperature of the air-conditioned space 1 The deviation from and becomes smaller. At this time, since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air-conditioned space 1 becomes the set temperature, the VAV air volume can be reduced.

When a predetermined time (for example, 10 minutes) has elapsed after setting the target air supply temperature to the setting supply air temperature on the lower side, the target air supply temperature control unit 5 sets the target air supply temperature as the reference target air supply temperature (for example, 10 minutes). 16 ° C). As a result, the air conditioner 2 generates air-conditioned air A1 having a reference target air temperature, and supplies the air-conditioned air A1 to the air-conditioned space 1 through the supply air passage 3. Also at this time, the variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air conditioning target space 1 becomes the set temperature.

When the temperature of the air-conditioned air A1 supplied to the air-conditioned space 1 rises from the lower setting target air supply temperature (14 ° C) to the reference target air temperature (16 ° C), the room temperature and the set temperature of the air-conditioned space 1 The deviation from and becomes large. At this time, since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air-conditioned space 1 (detected temperature of the temperature sensors T1 and T2) becomes the set temperature, the VAV air volume can be increased.

When a predetermined time (for example, 10 minutes) has elapsed after setting the target air supply temperature to the reference target air supply temperature, the target air supply temperature control unit 5 sets the target air supply temperature on the rising side. Change to (18 ° C). As a result, the air conditioner 2 generates the conditioned air A1 having the target supply air temperature for setting on the rising side, and supplies the conditioned air A1 to the conditioned space 1 through the supply air passage 3. Also at this time, the variable air volume unit 4 controls the VAV air volume so that the indoor temperature (detected temperature of the temperature sensors T1 and T2) of the air conditioning target space 1 becomes the set temperature.

When the temperature of the air-conditioned air A1 supplied to the air-conditioned space 1 rises from the reference target air supply temperature (16 ° C.) to the setting target air supply temperature (18 ° C.) on the rising side, the room temperature and the set temperature of the air-conditioned space 1 The deviation from and becomes large. At this time, since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air-conditioned space 1 (detected temperature of the temperature sensors T1 and T2) becomes the set temperature, the VAV air volume can be increased.

When the target air supply temperature control unit 5 executes the target air supply temperature control, the target air supply temperature is set every time a predetermined time elapses. The temperature is changed in the order of the target air supply temperature for setting on the rising side, and this periodic change is repeated. The air conditioning state of the air conditioning target space 1 changes with the change of the supply air target temperature, and the variable air volume unit 4 controls the VAV air volume based on the air conditioning state of the air conditioning target space 1 after the change. It can be changed to the decreasing side or the increasing side.

In this way, the air supply air volume (VAV air volume) to the air-conditioned space 1 can be determined by using the control of the variable air volume unit 4 simply by performing a simple control of changing the target air supply temperature in a predetermined pattern. Can be changed. Moreover, since the variable air volume unit 4 controls the VAV air volume based on the air conditioning state of the air conditioning target space 1, the VAV air volume can be changed while appropriately covering the load of the air conditioning target space 1.

For example, when the load of the air-conditioned space 1 is small, the deviation between the indoor temperature of the air-conditioned space 1 and the set temperature becomes small. Therefore, in normal control, the VAV air volume is reduced by controlling the variable air volume unit 4. Therefore, the feeling of air conditioning may be weakened. Even in such a case, by executing the target air supply temperature control, for example, the target air supply temperature for setting on the descending side → the reference target air supply temperature and the reference target air supply temperature → the target air supply for setting on the ascending side When the target air supply temperature is changed to the rising side, such as the air temperature, the VAV air volume can be increased according to the change in the air supply target temperature. Therefore, it is possible to prevent the feeling of airflow from being weakened, and it is possible to improve the comfort of the user and the like. Further, by increasing the VAV air volume, it is possible to promote the mixing of air and the diffusion of air in the air-conditioned space 1, and the indoor temperature distribution and the air quality distribution can be made suitable. Further, in this embodiment, the return air A2 of the air-conditioned space 1 is mixed with the outside air A3 so that the air can be supplied to the air-conditioned space 1. Therefore, by increasing the VAV air volume, the outside air supply is insufficient due to the decrease in the VAV air volume. It is possible to prevent this from occurring, and it is possible to supply sufficient outside air.

In the predetermined pattern shown in FIG. 4, the target air supply temperature is changed in the order of the reference target air supply temperature → the target air supply temperature for setting on the descending side → the reference target air supply temperature → the target air supply temperature for setting on the ascending side. Therefore, the VAV air temperature can be changed smoothly, and it is possible to prevent the user or the like from being uncomfortable due to a sudden change in the VAV air temperature. Moreover, since the target air temperature for setting on the descending side and the target air temperature for setting on the ascending side are changed around the reference target air supply temperature, the air supply target temperature can be changed in a well-balanced manner, and it gets cold. It is possible to appropriately cool the air-conditioned space 1 while suppressing the occurrence of over-cooling and insufficient cooling.

In this way, the target air-conditioning temperature control unit 5 controls the target air-conditioning temperature to change the target air-conditioning temperature in a predetermined pattern. If the room temperature of 1 is out of the predetermined range and the VAV air volume is out of the predetermined range, the load of the air-conditioned space 1 cannot be covered (insufficient cooling) or the air-conditioned space 1 May lead to overcooling.

Therefore, the target air supply temperature control unit 5 solves the problem of insufficient cooling or overcooling when the indoor temperature of the air-conditioned space 1 is out of the predetermined range and the VAV air volume is continuously out of the predetermined range. Is in control.

Returning to FIG. 3, the target air supply temperature control unit 5 has a VAV air volume of 100% and a room temperature during execution of the target air supply temperature control for changing the target air supply temperature in a predetermined pattern (step # 11). By determining whether or not is higher than the set temperature and whether or not the VAV air volume is the lower limit air volume and the room temperature is lower than the set temperature (steps # 12, step # 15), the air conditioning target space 1 It is determined whether or not the state in which the indoor temperature of the room is out of the predetermined range and the VAV air volume is out of the predetermined range continues.

When the VAV air volume is 100% and the room temperature is higher than the set temperature, even if the VAV air volume is 100%, the room temperature does not drop to the set temperature, and the load of the air-conditioned space 1 can be covered. There is no condition (insufficient cooling). Therefore, when the VAV air volume is 100% and the room temperature is higher than the set temperature, the target air supply temperature control unit 5 stops the target air supply temperature control, and the VAV air volume is changed to the predetermined range side. The target air supply temperature is changed so as to be (in the case of Yes in step # 12, step # 13, step # 14). If the current target air supply temperature is not the setting target air supply temperature on the lower side, the target air supply temperature control unit 5 lowers the target air supply temperature (in the case of No in step # 13, step # 14). .. The method for lowering the target air supply temperature depends on what the current target air supply temperature is, and if the current target air supply temperature is the reference target air supply temperature, the target supply for setting on the lower side It is lowered to the air temperature, and if the current target air supply temperature is the setting target air supply temperature on the rising side, it is lowered to the reference target air supply temperature.

When the target air supply temperature is lowered, the air-conditioned air A1 having a lower target air-conditioning temperature is supplied to the air-conditioned space 1, so that the room temperature can be lowered to the set temperature, and the air-conditioned space 1 can be lowered. It is possible to solve the lack of cooling. Since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air conditioning target space 1 (detection temperature of the temperature sensors T1 and T2) becomes the set temperature, the air conditioning is performed as the target air supply temperature decreases. The deviation between the indoor temperature and the set temperature of the target space 1 becomes small, and the VAV air volume is gradually reduced from 100% to within a predetermined range (for example, in the range of 40% to 80%).

If the current target air temperature is the setting target air temperature on the lower side, the target air temperature control unit 5 shifts to normal control without lowering the target air temperature (step # 13). In the case of Yes, step # 19).

When the VAV air volume is the lower limit air volume and the room temperature is lower than the set temperature, even if the VAV air volume is set to the lower limit air volume, the room temperature is lowered to a temperature lower than the set temperature, and the air conditioning target space 1 is cooled. It has passed. Therefore, when the VAV air volume is the lower limit air volume and the room temperature is lower than the set temperature, the target air supply temperature control unit 5 stops the target air supply temperature control, and the VAV air volume is changed to the predetermined range side. The target air supply temperature is changed so as to be (in the case of Yes in step # 15, step # 16, step # 17). The target air supply temperature control unit 5 raises the target air supply temperature if the current target air supply temperature is not the setting target air supply temperature on the rising side (in the case of No in step # 16, step # 17). .. The method for raising the target air supply temperature differs depending on what the current target air supply temperature is, and if the current target air supply temperature is the reference target air supply temperature, the target supply for setting on the rising side It is raised to the air temperature, and if the current target air supply temperature is the target air supply temperature for setting on the lower side, it is raised to the reference target air supply temperature.

When the target air supply temperature is raised, the air-conditioned air A1 having a higher target air supply temperature than before is supplied to the air-conditioned space 1, so that the room temperature can be raised to the set temperature, and the air-conditioned space 1 can be raised. It is possible to prevent the air from getting too cold. Since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air conditioning target space 1 (detection temperature of the temperature sensors T1 and T2) becomes the set temperature, the air conditioning is performed as the target air supply temperature rises. The deviation between the indoor temperature and the set temperature of the target space 1 becomes large, and the VAV air volume is gradually increased from the lower limit air volume to be within a predetermined range (for example, in the range of 40% to 80%).

If the current target air temperature is the setting target air temperature on the rising side, the target air temperature control unit 5 shifts to normal control without raising the target air temperature (step # 16). In the case of Yes, step # 19).

If there is a release signal for canceling the target supply air temperature control during execution of the target supply air temperature control, the target supply air temperature control unit 5 cancels the target supply air temperature control and shifts to the normal control. (In the case of Yes in step # 18, step # 19). As for the release signal for releasing the target air supply temperature control, for example, the release signal can be output based on the human operation of the user using a remote controller or the like. Further, for example, it is possible to set a condition for the release signal in advance, such as the elapse of the set time after starting the target air supply temperature control, and output the release signal when the condition is satisfied.

[Second Embodiment]
In the first embodiment, the second embodiment is used as a control for eliminating the insufficient cooling or the overcooling when an inconvenience such as insufficient cooling or overcooling occurs during the execution of the target air supply temperature control. It is another embodiment of what kind of control is performed.

In the first embodiment, if an inconvenience such as insufficient cooling or overcooling occurs during execution of the target supply air temperature control, the target supply air temperature control unit 5 stops the target supply air temperature control and the space to be air-conditioned. Control is performed to change the target air supply temperature so that the air supply air volume to 1 is changed to the predetermined range side. On the other hand, in the second embodiment, if an inconvenience such as insufficient cooling or overcooling occurs during the execution of the target supply air temperature control, the target supply air temperature control unit 5 continues the execution of the target supply air temperature control. However, in the target air supply temperature control, the control is performed to change the predetermined pattern so that the air supply air volume to the air conditioning target space 1 is changed to the predetermined range side.

As described above, in the second embodiment, the control for eliminating the insufficient cooling and the overcooling is only different from the first embodiment. Therefore, the control different from the first embodiment is based on the flowchart of FIG. Only the description will be added, and the description of other configurations will be omitted. Incidentally, the flowchart of FIG. 5 replaces the flowchart of FIG. 3 in the first embodiment, and the operation or the like in the flowchart of FIG. 2 performs the same operation in the second embodiment.

As shown in FIG. 5, in the target air supply temperature control, the target air supply temperature control unit 5 changes the target air supply temperature in a predetermined pattern (step # 21). Since the operation of changing the target air supply temperature in a predetermined pattern is the same as that of the first embodiment, the description thereof will be omitted.

During the execution of the target air supply temperature control (step # 21) in which the target air supply temperature control unit 5 changes the target air supply temperature in a predetermined pattern, the VAV air volume is 100% and the room temperature is higher than the set temperature. By determining whether the air volume is high and whether the VAV air volume is the lower limit air volume and the room temperature is lower than the set temperature (steps # 22 and step # 24), the room temperature of the air-conditioned space 1 is predetermined. It is determined whether or not the state of being out of the range and the VAV air volume being out of the predetermined range continues.

When the VAV air volume is 100% and the room temperature is higher than the set temperature, the target air supply temperature control unit 5 lowers the reference target air temperature so that the VAV air volume is changed to the predetermined range side. The predetermined pattern is changed to (in the case of Yes in step # 22, step # 23). As a method of lowering the reference target air supply temperature, for example, the reference target air supply temperature is lowered by a predetermined temperature (for example, 2 ° C.), and as the reference target air supply temperature decreases, the target air supply temperature for setting on the rising side is lowered. The target air supply temperature for setting on the lowering side is also lowered by a predetermined temperature (for example, 2 ° C.). That is, in what is shown in FIG. 4, the reference target air supply temperature is 16 ° C. → 14 ° C., the target air supply temperature for setting on the ascending side is 18 ° C. → 16 ° C., and the target air supply temperature for setting on the descending side is 14 ° C. → It will be changed to 12 ° C.

When the reference target air supply temperature, the target air supply temperature for setting on the rising side, and the target air supply temperature for setting on the descending side are lowered, air conditioning with a lower target air supply temperature than before for the air conditioning target space 1. Since the air A1 is supplied, the room temperature can be lowered to the set temperature, and the insufficient cooling of the air-conditioned space 1 can be solved. Since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air conditioning target space 1 (detection temperature of the temperature sensors T1 and T2) becomes the set temperature, the air conditioning is performed as the target air supply temperature decreases. The deviation between the indoor temperature and the set temperature of the target space 1 becomes small, and the VAV air volume is gradually reduced from 100% to within a predetermined range (for example, in the range of 40% to 80%).

When the VAV air volume is the lower limit air volume and the room temperature is lower than the set temperature, the target air supply temperature control unit 5 raises the reference target air supply temperature so that the VAV air volume is changed to the predetermined range side. The predetermined pattern is changed to (in the case of Yes in step # 24, step # 25). As a method of raising the reference target air supply temperature, for example, the reference target air supply temperature is raised by a predetermined temperature (for example, 2 ° C.), and as the reference target air supply temperature rises, the target air supply temperature for setting on the rising side is raised. And the target air supply temperature for setting on the lower side is also raised by a predetermined temperature (for example, 2 ° C.). That is, in what is shown in FIG. 4, the reference target air supply temperature is 16 ° C → 18 ° C, the target air temperature for setting on the ascending side is 18 ° C → 20 ° C, and the target air temperature for setting on the descending side is 14 ° C →. It will be changed to 16 ° C.

When the reference target air supply temperature, the target air supply temperature for setting on the ascending side, and the target air supply temperature for setting on the descending side are increased, air conditioning with a higher target air supply temperature than before for the air conditioning target space 1. Since the air A1 is supplied, the room temperature can be raised to a set temperature, and the air-conditioned space 1 can be prevented from being overcooled. Since the variable air volume unit 4 controls the VAV air volume so that the indoor temperature of the air conditioning target space 1 (detection temperature of the temperature sensors T1 and T2) becomes the set temperature, the air conditioning is performed as the target air supply temperature rises. The deviation between the indoor temperature and the set temperature of the target space 1 becomes large, and the VAV air volume is gradually increased from the lower limit air volume to be within a predetermined range (for example, in the range of 40% to 80%).

If there is a release signal for canceling the target supply air temperature control during execution of the target supply air temperature control, the target supply air temperature control unit 5 cancels the target supply air temperature control and shifts to the normal control. (In the case of Yes in step # 26, step # 27).

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, the air conditioning target space 1 is divided into a plurality of areas 1a and 1b, but for example, the air conditioning target space 1 may not be divided into a plurality of areas.

(2) The predetermined pattern in the target air supply temperature control is not limited to the one shown in FIG. 4, and various patterns can be set. For example, assuming that the reference target air supply temperature is 16 ° C., the first setting target air supply temperature (for example, 2 ° C.) higher than the reference target air supply temperature by a predetermined temperature (for example, 2 ° C.) is set as the target air supply temperature for setting. , 18 ° C.) and a second setting target air supply temperature (for example, 20 ° C.), which is twice a predetermined temperature higher than the reference target air supply temperature. When this pattern is set, the target air supply temperature can be changed in the form of gradually increasing in the order of 16 ° C. → 18 ° C. → 20 ° C.

In addition, when the target air temperature is periodically changed between the reference target air temperature and the target air temperature for multiple settings, the target air temperature is changed every time a certain predetermined time elapses. It is also possible to change the target air supply temperature when the first predetermined time elapses, and then change the target air supply temperature when the second predetermined time different from the first predetermined time elapses.

In this way, as a predetermined pattern, what kind of temperature the target air supply temperature is changed to, what order the target air supply temperature is changed among the plurality of temperatures, and how the target air supply temperature is changed. Various factors can be set as appropriate, such as whether to change at any timing.

(3) In the above embodiment, when the target air supply temperature control unit 5 stops the target air supply temperature control and changes the target air supply temperature so that the VAV air volume is changed to the predetermined range side, the target The supply air temperature is changed to the standard target air supply temperature and the target air supply temperature for setting, but the target air supply temperature may be changed to a temperature different from the standard target air supply temperature and the target air supply temperature for setting. It is possible, and the temperature at which the target air supply temperature is changed can be changed as appropriate.

(4) In the above embodiment, the target air supply temperature control unit 5 changes the predetermined pattern so that the VAV air volume is changed to the predetermined range side by changing the reference target air temperature. By changing the predetermined time in the predetermined pattern, the predetermined pattern can be changed so that the VAV air volume is changed to the predetermined range side. Further, by changing the order of the temperatures at which the target air supply temperature is changed in the predetermined pattern, the predetermined pattern can be changed so that the VAV air volume is changed to the predetermined range side. In this way, it is possible to appropriately change which element in the predetermined pattern is changed so that the VAV air volume is changed to the predetermined range side.

1 Air conditioning target space 2 Air conditioner 4 Variable air volume unit 5 Target air supply temperature control unit

Claims (4)

An air conditioner that produces conditioned air at the target air supply temperature,
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air-conditioning temperature control unit controls the target air-conditioning temperature when the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space continues to be out of the predetermined range. An air conditioning system that is configured to stop execution and change the target air supply temperature so that the air supply air volume to the air-conditioned space is changed to the predetermined range side . An air conditioner that produces conditioned air at the target air supply temperature,
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air-conditioning temperature control unit controls the target air-conditioning temperature when the indoor temperature of the air-conditioned space is out of the predetermined range and the amount of air supplied to the air-conditioned space continues to be out of the predetermined range. , An air-conditioning system configured to change the predetermined pattern so that the amount of air supplied to the air-conditioned space is changed to the predetermined range side . The predetermined pattern in the target air temperature control is set for a plurality of settings different from the reference target air temperature set based on the reference target air temperature based on the load state of the air-conditioned space and the reference target air temperature. It is set in a pattern that periodically changes the target air supply temperature to the target air supply temperature.
The target air temperature control unit changes the reference target air temperature in the target air temperature control so that the amount of air supplied to the air-conditioned space is changed to the predetermined range side. The air temperature system according to claim 2 , which is configured to change the temperature. An air conditioner that produces conditioned air at the target air supply temperature,
A variable air volume unit that controls the amount of air supplied to the air-conditioned space of the air-conditioned air generated by the air conditioner based on the air-conditioned state of the air-conditioned space.
It is provided with a target air supply temperature control unit that executes target air supply temperature control that changes the target air supply temperature of the conditioned air generated by the air conditioner in a predetermined pattern.
When the air-conditioning state of the air-conditioned space changes due to the execution of the target air-conditioning temperature control by the target air-conditioning temperature control unit, the variable air volume unit air-conditions based on the air-conditioned state of the air-conditioned space after the change. It is configured to control the amount of air supplied to the target space.
The target air supply temperature control unit is the target air supply temperature when the deviation between the indoor temperature of the air conditioning target space and the set temperature is within a predetermined range and the supply air volume to the air conditioning target space is equal to or less than the predetermined air volume. An air conditioning system that is configured to provide control .

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