JP7226969B2 - Air conditioning control device and method - Google Patents

Description

The present invention relates to an air-conditioning control technique used in a VAV (Variable Air Volume) type central air-conditioning system.

2. Description of the Related Art In recent years, a VAV central air-conditioning system has been introduced as an air-conditioning system in a building such as a building having a relatively large air-conditioned space. The VAV-type central air-conditioning system has a variable air volume type air-conditioning device (VAV) installed in each zone in which the air-conditioned space is divided into multiple zones, and supplies air adjusted by an air handling unit (AHU). It is a system that controls the amount of air supplied to each zone and sent to the air-conditioned space by the VAV of each zone.

Conventionally, in such a VAV central air-conditioning system, load reset control is used as an air-conditioning control technique for optimally controlling the thermal environment in a certain zone in the air-conditioned space. By this load reset control, the air conditioner controller resets the supply air temperature set value according to the required air volume notified from each VAV (load reset), and the new supply air temperature set value and the AHU detected by the temperature sensor In order to match the supply air temperature, the valve is controlled by calculating the manipulated variable related to the flow rate of cold and hot water using an algorithm such as PID, and the air supply air volume of the AHU according to the total air volume required for each VAV is controlled (see, for example, Patent Document 1).

JP 2015-132396 A JP-A-8-28940 JP-A-8-42902

However, in such conventional technology, although the AHU supply air temperature set value can be controlled to an optimum value according to the required air volume in each zone, the supply air volume is reduced in a zone with a large heat load compared to other zones. tends to be insufficient, and a deviation between the set temperature and the actual temperature, that is, a steady-state deviation tends to occur.

For example, during cooling operation, in a zone with a smaller heat load than others, if the zone temperature falls below the set temperature even if the amount of supplied air is minimized, the conventional technology does not support the AHU. By increasing the supply air temperature, control is performed to raise the zone temperature of the zone to the set temperature. On the other hand, such an increase in supply air temperature causes the zone temperature of each zone to rise, so in order to maintain the zone temperature of each zone at the set temperature, the supply air volume of almost all zones increases. It will be. At this time, the supply air volume of the VAV zone, which has a relatively large heat load, may reach the maximum supply air volume, and the air volume may not be increased sufficiently, which may cause the zone to fall into insufficient air conditioning. .

The present invention is intended to solve such problems, and an object thereof is to provide an air conditioning control technique capable of compensating for the shortage of air supply air volume in an arbitrary zone.

In order to achieve such an object, an air conditioning control apparatus according to the present invention includes an air conditioner that generates and supplies conditioned air having a specified supply air temperature, and specifies the conditioned air supplied from the air conditioner. and a plurality of air conditioners that supply a predetermined amount of supplied air to a space to be air-conditioned, and that performs load reset control on the supply air temperature of the air conditioners in accordance with the load status notified from the plurality of air conditioners. The conditioned air to be supplied to the zone from the air conditioner corresponding to the zone based on the zone set temperature set for each of a plurality of zones used in the system and provided by dividing the space. is an air conditioning control device that instructs the air conditioning system to supply an air volume of 1, wherein a zone in which the air supply air volume is insufficient is selected from the zones as an air supply air volume insufficient zone, and the air supply air volume insufficient zone A zone selection unit that selects one or a plurality of zones located in the surrounding area as an assist zone for performing assist air supply to the air supply shortage zone, and a zone setting temperature of the assist zone that instructs the air conditioning system and an air supply air volume adjustment unit that adjusts and increases the air supply air volume in the assist zone to compensate for the insufficient air supply air volume in the air supply air volume shortage zone.

Further, in one configuration example of the air conditioning control device according to the present invention, the zone selection unit is notified from the plurality of air conditioning equipment, based on the load status indicating insufficient air conditioning capacity in each zone, The air supply air volume shortage zone is selected.

Further, in one configuration example of the air conditioning control device according to the present invention, when the air supply air volume adjustment unit adjusts the zone set temperature of the assist zone, if the air conditioner is in cooling operation, the The zone set temperature of the assist zone is adjusted to a temperature lower by a preset cooling adjustment temperature, and when the air conditioner is in heating operation, the zone set temperature of the assist zone is adjusted to the preset heating adjustment. Only the temperature is adjusted to a higher temperature.

Further, in one configuration example of the air conditioning control device according to the present invention, when the air supply air volume adjustment unit adjusts the zone setting temperature of the assist zone, one of the assist zones is selected from among the assist zones at the time of the previous adjustment in the assist zone. Zones that have not been adjusted for a certain period of time are excluded, and only the zone setting temperatures of the remaining assist zones are adjusted.

Further, an air conditioning control method according to the present invention includes an air conditioner that generates and supplies conditioned air having a specified supply air temperature, and an air conditioner that supplies the conditioned air supplied from the air conditioner at a specified supply air volume. and a plurality of air conditioners supplying a space, and for performing load reset control of the supply air temperature of the air conditioners according to the load status notified from the plurality of air conditioners. Then, based on the zone set temperature set for each of a plurality of zones provided by dividing the space, the air supply volume of the conditioned air to be supplied from the air conditioner corresponding to the zone to the zone is determined. to the air conditioning system, wherein a zone selection unit selects a zone in which the air supply air volume is insufficient among the zones as an air supply air volume shortage zone, and the air supply air volume is insufficient a zone selection step of selecting one or a plurality of zones located around an insufficient zone as an assist zone in which assist air is supplied to the insufficient air supply air volume zone; an air supply air volume adjustment step of adjusting the indicated zone set temperature of the assist zone and increasing the air supply air volume in the assist zone to compensate for the insufficient air supply air volume in the air supply air volume shortage zone; It has

According to the present invention, assist air supply is performed by one or a plurality of assist zones located around an air supply air volume shortage zone in which the air supply air volume is insufficient among the zones. . Therefore, it is possible to make up for the shortage of air supply air volume in any zone, and to suppress the deviation between the set temperature and the actual temperature, that is, the occurrence of steady state deviation. Therefore, even if there is a zone with a large heat load among the zones provided in the space R and the cooling capacity cannot keep up, the air supplied from the surrounding zones can be used to control the air-conditioned environment to a better one. becomes possible.

It is a block diagram which shows the structure of an air-conditioning control apparatus. FIG. 4 is a sequence diagram showing load reset control operations in the air conditioning system; 4 is a flowchart showing zone assist control operations in the air conditioning system; It is an operation example of zone assist control.

Next, one embodiment of the present invention will be described with reference to the drawings.
[Air conditioning controller]
First, an air conditioning control device 10 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of an air conditioning control device.

The air-conditioning control device 10 is generally composed of an arithmetic processing device such as an industrial controller and a server device. It has the function of calculating and instructing air conditioning control parameters such as air supply air volume and air supply temperature used in air handling units (AHUs) and air conditioning equipments (VAV) (Variable Air Volume).

As shown in FIG. 1, in the space R, an air conditioning system 20 is installed. The air conditioning control device 10 is connected to an air conditioning controller 21 of an air conditioning system 20 via a communication line L1.
The air-conditioning system 20 is an existing system for actually adjusting the air-conditioned environment of the space R to be air-conditioned. AHU and N VAVs (N is an integer equal to or greater than 2) are provided.

The air conditioning controller 21 is an industrial controller as a whole and has a function of controlling the AHU and VAV based on the air conditioning control parameters instructed by the air conditioning control device 10 .
The AHU consists of a general air conditioner, and has the function of generating conditioned air at a supplied air temperature specified by the air conditioning controller 21 and blowing air to each VAV at the supplied air volume specified by the air conditioning controller 21. there is
The VAV consists of a general variable air volume device installed for each of a plurality of zones Z that are provided by dividing the space R, and responds to the conditioned air blown from the AHU with the supplied air volume specified by the air conditioning controller 21. It has a function of supplying air to the zone Z where it is used.

The air conditioning system 20 according to the present invention has a function of controlling AHU and VAV based on general load reset control.
Specifically, the VAV has a function of calculating the required air volume required in the zone Z based on the zone set temperature of the corresponding zone Z and the zone temperature actually detected by the temperature sensor, and notifying the air conditioning controller 21 of the required air volume. Then, based on the zone set temperature, zone temperature, and required air volume, it is determined whether or not the air conditioning capacity is insufficient in the zone Z, and the load status (request status) including the determined result is notified to the air conditioning controller 21. and

The air conditioning controller 21 has a function of resetting the set value of the supply air temperature of the AHU based on the load status notified from the VAV, and the set value of the supply air temperature and the supply air temperature of the AHU actually detected by the temperature sensor. Based on this, the operation amount (valve opening) for controlling the amount of cold water and hot water supplied to the AHU is calculated, and the function to instruct the heat medium valve such as the cold water valve and the hot water valve, and the function to notify from the VAV Based on the total required air volume obtained from the required air volume, the fan rotation speed corresponding to the air supply volume required by the AHU is calculated and instructed to the AHU.

In FIG. 1, three (N=3) zones Z1, Z2, Z3 and three VAV1, VAV2, VAV3 are installed in the space R. The case where a VAV is installed is shown. In the following, this is generalized so that one AHU is placed in the space R, and N zones Zi (i=1, 2, . VAVi (i=1, 2, . . . , N) are connected as an example.

The number of zones Z and VAVs and the relationship between zones Z and VAVs are not limited to this, and it is sufficient that at least one zone Z has one VAV. For example, when a plurality of VAVs are installed in one zone Z, the plurality of VAVs are replaced with one representative VAV to calculate the air supply air volume of zone Z, and the finally obtained air supply air volume is proportionally divided by each VAV, the present invention can be applied in the same manner as below.
Also, the number of AHUs is not limited to this. For example, even in a configuration in which a plurality of AHUs are arranged in the space R and a plurality of VAVs are connected to each AHU, if load reset control is performed for each AHU (for each air conditioning system), the following is performed. The present invention can be applied in the same manner.

Next, the configuration of the air conditioning control device 10 will be described in detail with reference to FIG. The air conditioning control device 10 includes a communication I/F section 11, an operation input section 12, a display section 13, a storage section 14, and an arithmetic processing section 15 as main functional sections.

The communication I/F section 11 has a function of performing data communication with the air conditioning controller 21 via the communication line L1.
The operation input unit 12 includes operation input devices such as a keyboard, touch panel, mouse, operation buttons, and switches, and has a function of detecting an operator's operation and outputting it to the arithmetic processing unit 15 .
The display unit 13 is composed of a display element such as an LCD or an LED, and has a function of visually displaying data output from the arithmetic processing unit 15 .

The storage unit 14 is composed of a storage device such as a hard disk or a semiconductor memory, and has a function of storing a program 14P used for air conditioning control processing executed by the arithmetic processing unit 15 and various processing data. The program 14P is pre-stored in the storage unit 14 from an external device or recording medium connected to the air conditioning control device 10 . The processing data stored in the storage unit 14 includes the correspondence relationship between the zone Z acquired from the facility management system 30 and the VAV, the zone set temperature and load status for each zone, and furthermore, the assist zone and the adjusted zone to be described later. We have data.

The arithmetic processing unit 15 has a CPU and its peripheral circuits, and has a function of realizing various processing units by making the CPU cooperate with the program 14P of the storage unit 14 . Main processing units realized by the arithmetic processing unit 15 include a data acquisition unit 15A, a zone selection unit 15B, an air supply air volume adjustment unit 15C, and an air conditioning instruction unit 15D.

The data acquisition unit 15A acquires the zone set temperatures and load conditions for each zone Z from the air conditioning controller 21 of the air conditioning system 20 via the communication line L1 and the communication I/F unit 11, and stores them in the storage unit 14. have.

The zone selection unit 15B acquires from the storage unit 14 the load status indicating insufficient air conditioning capacity for each zone Z, which is notified from the VAV to the air conditioning controller 21, and based on these load statuses, determines the air supply air volume in the zone Z. A function to select a zone with insufficient air volume as an insufficient air volume zone, and one or more zones located around the insufficient air volume zone to assist air supply to the insufficient air volume zone. and the ability to select as a zone.

The air supply air volume adjustment unit 15C adjusts the zone setting temperature of the assist zone instructed to the air conditioning controller 21 of the air conditioning system 20 to increase the air supply air volume in the assist zone so that the air supply air volume is insufficient in the zone where the air supply air volume is insufficient. It has a function to compensate for the amount of air supplied.
Specifically, when adjusting the zone set temperature of the assist zone, if the AHU is in cooling operation, the air supply air volume adjustment unit 15C lowers the zone set temperature of the assist zone by the preset cooling adjustment temperature. Adjust to temperature. Further, when the AHU is in heating operation, the zone setting temperature of the assist zone is adjusted to a temperature higher by the preset heating adjustment temperature. One and the same adjusted temperature may be used as both the cooling adjusted temperature and the heating adjusted temperature.

Further, when adjusting the zone set temperatures of the assist zones, the air supply air volume adjustment unit 15C excludes, from the assist zones, zones that have not been adjusted for a certain period of time since the previous adjustment in the assist zones, and the remaining It has a function to adjust only the zone setting temperature of the assist zone.

The air-conditioning instruction unit 15D has a function of instructing the air-conditioning controller 21 of the air-conditioning system 20, via the communication I/F unit 11 and the communication line L1, of the zone setting temperature of the assist zone adjusted by the air supply air volume adjustment unit 15C. have.

[Operation of the air conditioning system]
Next, load reset control operation of the air conditioning system 20 using the air conditioning control device 10 according to the present embodiment will be described with reference to FIG. FIG. 2 is a sequence diagram showing load reset control operations in the air conditioning system.

Each VAVi acquires the zone temperature detected by the temperature sensor installed in the corresponding zone Zi according to the arrival of the preset equipment control cycle (step S100), and instructed by the air conditioning controller 21 The zone setting temperature of zone Zi is obtained from its own storage unit (not shown) (step S101).
Subsequently, each VAVi calculates the required air volume required in the zone Zi based on the deviation between the zone temperature and the zone set temperature (step S102), and notifies the obtained required air volume to the air conditioning controller 21 (step S103).

The air conditioning controller 21 obtains the requested air volume notified from each VAVi, calculates the total requested air volume (step S104), and adjusts the air supply air volume required by the AHU based on the obtained total required air volume. The fan rotation speed obtained is calculated (step S105), and the obtained fan rotation speed is indicated to the AHU (step S106).
The AHU controls the rotation speed of the air supply fan based on the fan rotation speed instructed by the air conditioning controller 21 (step S107). As a result, conditioned air corresponding to the air volume required in each zone Zi is supplied from the AHU to each VAVi.

Also, each VAVi controls the opening of its own damper based on the required air volume required in zone Zi calculated in step S102 (step S110). As a result, the required air volume in zone Zi is ensured.
After that, each VAVi determines whether or not the air conditioning capacity is insufficient as the load status in the zone Zi based on the required air volume of the zone Zi, the zone temperature and the zone set temperature (step S111). If it is determined that it is not (step S112: NO), it waits until the next device control period arrives. As for whether or not the air conditioning capacity is insufficient, a known determination method described in Patent Documents 2 and 3, for example, may be used.

On the other hand, when it is determined that the air conditioning capacity is insufficient (step S112: YES), each VAVi notifies the air conditioning controller 21 of insufficient air conditioning capacity as the load status in the zone Zi (step S113).
When the load status notified from each VAVi indicates that the air conditioning capacity is insufficient, the air conditioning controller 21 changes and resets the supply air temperature setting value of the AHU (step S114). At this time, if the load condition indicates insufficient cooling capacity, the supply air temperature setting value is set lower by a preset temperature range, and if the load condition indicates insufficient heating capability, the supply air temperature setting value is preset. is set higher by the temperature range

After that, the air conditioning controller 21 acquires the AHU supply air temperature detected by the temperature sensor (step S115), and based on a feedback control algorithm such as PID, determines the AHU supply air temperature set value and the supply air temperature. A new manipulated variable (valve opening) for matching is calculated (step S116), and the obtained new manipulated variable is indicated to a heat transfer valve (not shown) (step S117).

In general, the temperature of air supplied to the AHU is controlled by the amount of heat medium supplied to the AHU, which is cold water or hot water. Therefore, the air conditioning controller 21 calculates an operation amount indicating the degree of opening of a heat medium valve such as a cold water valve or a hot water valve for controlling the amount of heat medium supplied, and instructs the heat medium valve.
The heat medium valve controls the valve opening degree based on the operation amount instructed by the air conditioning controller 21 (step S118). As a result, the supply air temperature of the AHU is controlled so as to match the supply air temperature set value, and as a result, the lack of air conditioning capacity in each zone is resolved.

[Operation of Air Conditioning Control Device]
Next, the zone assist control operation of the air conditioning control device 10 according to the present embodiment will be described with reference to FIG. FIG. 3 is a flow chart showing the zone assist control operation in the air conditioning system.

The data acquisition unit 15A acquires the zone setting temperature of each zone Zi from the air conditioning controller 21 (step S120) and acquires the load status of each zone Zi in accordance with the arrival of the preset zone assist control cycle. and stored in the storage unit 14 (step S121).
Next, the zone selection unit 15B acquires the load status of each zone Zi stored in the storage unit 14, and based on these load statuses, determines the air supply air volume in each zone Zi where the air supply air volume is insufficient. It is checked whether there is an insufficient zone (step S122).
Here, if none of the load conditions indicate an insufficient air supply volume and there is no zone for an insufficient air supply volume (step S122: NO), the series of zone assist control operations is terminated and the next zone assist control cycle is performed. wait until the arrival of

On the other hand, if there is an air supply air volume shortage zone in which the load status indicates insufficient air conditioning capacity (step S122: YES), the zone selection unit 15B selects one or more air supply air volume shortage zones located around the air supply air volume shortage zone. The zone is selected as an assist zone in which assist air supply is performed for the insufficient air supply volume zone (step S123).

Subsequently, the air supply air volume adjustment unit 15C selects the assist zone selected by the zone selection unit 15B, and adjusts the zone set temperature in the assist zone immediately before that adjustment, for which a certain period of time has not passed since the previous adjustment. Zones are excluded (step S124). At this time, the timing at which the zone set temperature is adjusted by the zone assist control is stored in the storage unit 14 for each zone.

Next, the air supply air volume adjustment unit 15C adjusts the zone setting temperatures of the remaining assist zones excluding the already adjusted zones by the preset adjustment temperature (step S125). At this time, when the AHU is in the cooling operation, the air supply air volume adjustment unit 15C adjusts the zone setting temperature of the assist zone to a temperature lower by the preset cooling adjustment temperature, and the AHU is in the heating operation. In some cases, the zone setting temperature of the assist zone is adjusted to a temperature higher by the preset heating adjustment temperature.

After that, the air-conditioning instruction unit 15D instructs the air-conditioning controller 21 of the air-conditioning system 20 via the communication I/F unit 11 and the communication line L1 to set the zone set temperature of the assist zone adjusted by the air supply air volume adjustment unit 15C. Then (step S126), the series of zone assist control operations is completed, and the next zone assist control period is awaited.

FIG. 4 is an operation example of zone assist control. In FIG. 4, the space R, which has a rectangular shape in plan view, is divided into 3×2=6 (N=6) zones, and each zone Zi (i=1, 2, . . . , 6) has a pair of 1 shows an example in which VAVi is arranged.
In such an arrangement example, it is assumed that zone Z1 is selected as an air supply shortage zone, and zones Z2 and Z3 adjacent to zone Z1 are selected as assist zones.

As a result, when the AHU is in cooling operation, the zone set temperature Ts2 of the assist zone Z2 is adjusted to a temperature lower by the preset cooling adjustment temperature ΔT, that is, Ts2−ΔT. Similarly, the zone set temperature Ts3 of the assist zone Z3 is also adjusted to a temperature lower by the cooling adjustment temperature ΔT, that is, Ts3−ΔT.
Further, when the AHU is in heating operation, the zone set temperature Ts2 of the assist zone Z2 is adjusted to a temperature higher by a preset heating adjustment temperature ΔT, that is, Ts2+ΔT. Similarly, the zone set temperature Ts3 of the assist zone Z3 is also adjusted to a temperature lower by the heating adjustment temperature ΔT, that is, Ts3+ΔT.

As a result, in the assist zones Z2 and Z3, the air conditioning controller 21 controls the VAV2 and VAV3 of the assist zones Z2 and Z3 so that the zone temperatures approach the new zone set temperatures, and the air conditioning supplied to the assist zones Z2 and Z3 is controlled. The amount of air, ie zone supply airflow, will increase. For this reason, conditioned air flows into the insufficient air supply air volume zone Z1 from the surrounding assist zones Z2 and Z3. It will be supplemented by Z3. Therefore, the load condition of the air supply air volume shortage zone Z1 is improved, and the air conditioning environment of the air supply air volume shortage zone Z1 can be maintained in good condition.

In addition, since the adjusted zone for which a certain period of time has not passed since the previous adjustment in which the zone setting temperature was adjusted immediately before is excluded from the assist zone, it is possible to provide a period in which the effect of the adjusted zone can be obtained, and excessive Adjustment of the zone set temperature can be suppressed. Further, as long as the air supply air volume shortage zone Z1 exists, the zone setting temperature of the assist zone is repeatedly adjusted every time a certain period of time has passed since the previous adjustment, so that the air supply air volume shortage zone Z1 is relatively early. Insufficient supply air volume can be resolved.

[Effects of this embodiment]
As described above, in the present embodiment, the zone selection unit 15B selects a zone in which the air supply air volume is insufficient among the zones as an air supply air volume insufficient zone, and selects one located around the air supply air volume insufficient zone. Alternatively, a plurality of zones are selected as assist zones in which assist air is supplied to an insufficient air supply air volume zone, and the air supply air volume adjustment unit 15C adjusts the zone setting temperature of the assist zone instructed to the air conditioning system 20, By increasing the amount of supplied air in the assist zone, the insufficient amount of supplied air in the insufficient amount of supplied air is compensated for.

As a result, assist air supply is performed by one or a plurality of assist zones located around an air supply air volume shortage zone in which the air supply air volume is insufficient among the zones. Therefore, it is possible to make up for the shortage of air supply air volume in any zone, and to suppress the deviation between the set temperature and the actual temperature, that is, the occurrence of steady state deviation. Therefore, even if there is a zone with a large heat load among the zones provided in the space R and the cooling capacity cannot keep up, the air supplied from the surrounding zones can be used to control the air-conditioned environment to a better one. becomes possible.

Further, in the present embodiment, the zone selection unit 15B selects the air supply air volume shortage zone based on the load status indicating insufficient air conditioning capacity in each zone Zi notified from a plurality of VAVs. may
As a result, it is possible to select an air supply air volume shortage zone by utilizing the load status of each zone used in the air conditioning system 20 for load reset control, and to accurately select an air supply air volume shortage zone with a simple configuration. It becomes possible.

Further, in the present embodiment, when the air supply air volume adjustment unit 15C adjusts the zone set temperature of the assist zone, the zone set temperature of the assist zone is set in advance when the AHU is in cooling operation. The temperature may be adjusted to be lower by the cooling adjustment temperature, and when the AHU is in heating operation, the zone set temperature of the assist zone may be adjusted to be higher by the preset heating adjustment temperature.
As a result, even when the AHU is in cooling operation or heating operation, it is possible to adjust the amount of supplied air in the assist zone by extremely simple control of adjusting the zone set temperature of the assist zone.

Further, in the present embodiment, when the air supply air volume adjustment unit 15C adjusts the zone setting temperature of the assist zone, the adjusted zone in which a certain period of time has not passed since the previous adjustment in the assist zone out of the assist zones may be excluded and only the zone set temperatures of the remaining assist zones may be adjusted.
As a result, an adjusted zone for which a certain period of time has not elapsed since the previous adjustment in which the zone setting temperature was adjusted immediately before is excluded from the assist zone. adjustment of the zone setting temperature can be suppressed. Further, as long as the air supply air volume shortage zone exists, the zone setting temperature of the assist zone is repeatedly adjusted every time a certain period of time has passed since the previous adjustment, so that the air supply in the air supply air volume shortage zone Z1 is relatively early. It is possible to solve the problem of insufficient air volume.

[Expansion of Embodiment]
Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10... Air-conditioning control apparatus, 11... Communication I/F part, 12... Operation input part, 13... Display part, 14... Storage part, 14P... Program, 15... Arithmetic processing part, 15A... Data acquisition part, 15B... Zone selection Section 15C... Supply air volume adjustment section 15D... Air conditioning instruction section 20... Air conditioning system 21... Air conditioning controller AHU... Air conditioner VAV... Air conditioner L1, L2... Communication line.

Claims (4)

An air conditioner that generates and supplies conditioned air having a specified supply air temperature, and a plurality of air conditioners that supply the conditioned air supplied from the air conditioner to a space to be air-conditioned at a specified supply air volume. and is used in an air conditioning system that performs load reset control of the supply air temperature of the air conditioner according to the load status notified from the plurality of air conditioners, each of a plurality of zones provided by dividing the space An air conditioning control device for instructing the air conditioning system of the amount of conditioned air to be supplied to the zone from the air conditioner corresponding to the zone based on the zone set temperature set in
A zone in which the air supply air volume is insufficient is selected from the zones as an air supply air volume insufficient zone, and one or more zones located around the air supply air volume insufficient zone are selected as the air supply air volume insufficient zone. a zone selection unit that selects as an assist zone for performing assist air supply to the
Adjusting the zone set temperature of the assist zone instructed to the air conditioning system to increase the air supply air volume in the assist zone, thereby supplementing the insufficient air supply air volume in the air supply air volume insufficient zone. Equipped with an air volume adjustment part and
When adjusting the zone setting temperature of the assist zone, the air supply air volume adjustment unit excludes, from the assist zones, an adjusted zone in which a predetermined time has not passed since the previous adjustment in the assist zone, and the remaining An air conditioning control device characterized by adjusting only the zone set temperature of an assist zone . The air conditioning control device according to claim 1,
The air conditioning control is characterized in that the zone selection unit selects the air supply air volume shortage zone based on the load status indicating insufficient air conditioning capacity in each zone notified from the plurality of air conditioning equipment. Device. In the air conditioning control device according to claim 1 or claim 2,
When the zone set temperature of the assist zone is adjusted, the air supply air volume adjustment unit adjusts the zone set temperature of the assist zone to a preset cooling adjustment temperature if the air conditioner is in cooling operation. An air conditioning control device that adjusts the temperature to a lower temperature, and adjusts the zone set temperature of the assist zone to a temperature that is higher by a preset heating adjustment temperature when the air conditioner is in heating operation. An air conditioner that generates and supplies conditioned air having a specified supply air temperature, and a plurality of air conditioners that supply the conditioned air supplied from the air conditioner to a space to be air-conditioned at a specified supply air volume. and is used in an air conditioning control device of an air conditioning system that performs load reset control of the supply air temperature of the air conditioners according to the load status notified from the plurality of air conditioners, and is provided by dividing the space. air conditioning system for instructing the air conditioning system on the amount of conditioned air to be supplied to the zone from the air conditioner corresponding to the zone, based on the zone set temperature set for each of the zones A control method comprising:
A zone selection unit selects a zone in which the air supply air volume is insufficient among the zones as an air supply air volume insufficient zone, and selects one or more zones located around the air supply air volume insufficient zone as the air supply air volume insufficient zone. a zone selection step for selecting an assist zone for performing assist air supply for an insufficient air volume zone;
The air supply air volume adjustment unit adjusts the zone set temperature of the assist zone instructed to the air conditioning system to increase the air supply air volume in the assist zone, so that the air supply air volume is insufficient in the insufficient air supply zone. Equipped with an air supply air volume adjustment step that compensates for the air supply air volume ,
The step of adjusting the air supply air volume includes, when adjusting the zone set temperature of the assist zone, excluding, from among the assist zones, an adjusted zone in which a predetermined time has not passed since the previous adjustment in the assist zone, and the remaining An air conditioning control method characterized by adjusting only the zone set temperature of an assist zone .

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