JP6985794B2 - Control device for air conditioning system, air conditioning system - Google Patents

Description

The present invention relates to a control device for an air conditioning system and an air conditioning system. The present invention specifically relates to a control device for an air conditioning system that collectively performs air conditioning in a plurality of air conditioning regions in a building, and an air conditioning system including the control device.

Patent Document 1 describes a configuration in which cold air or warm air from an indoor unit is distributed to a plurality of rooms, and the supply of cold air or warm air to an outlet is turned on or off by a damper. Further, the outdoor unit is equipped with a variable capacity compressor, and the capacity of the variable capacity compressor is determined according to the total number of outlets corresponding to the open dampers. Patent Document 1 provides a capacity ratio table in which the total number of outlets and the capacity of the variable capacity compressor are associated with each other.

Japanese Unexamined Patent Publication No. 2013-200089

The damper provided in the air conditioner described in Patent Document 1 only switches the supply of cold air or warm air to the room on or off. That is, in the technique described in Patent Document 1, when the number of dampers is changed, the capacity ratio table must also be changed.

In the configuration described in Patent Document 1, when the number of dampers is changed, the capacity of the heat source machine cannot be used in the full range without changing the design or the like.

It is an object of the present invention to provide a control device and an air conditioning system for an air conditioning system that enables the full range of the capacity of the heat source machine to be used regardless of the number of dampers.

The control device for an air conditioning system according to the present invention includes a processing unit and a control unit. The processing unit determines the amount of heat supplied per unit time from the heat source machine that generates cold air or warm air to each of the plurality of air-conditioned areas of the building. The control unit controls a distribution device that distributes the cold air or the warm air generated by the heat source machine to the plurality of air-conditioned regions. The distribution device includes an air supply duct and a plurality of dampers. The air supply duct is branched into a plurality of systems so as to distribute the cold air or the warm air from the heat source machine to each of the plurality of air conditioning regions. The plurality of dampers adjust the flow rate of the cold air or the warm air blown from each of the plurality of systems of the air supply duct to the plurality of air-conditioned regions. The processing unit has at least two functions as follows. The first function is a function of determining the opening degree of each of the plurality of dampers according to the amount of heat supplied to each of the plurality of air conditioning regions per unit time. The second function is a function of determining the air volume of the cold air or the warm air supplied by the heat source machine with respect to the evaluation value corresponding to the average value of the opening degree of each of the plurality of dampers. The processing unit evaluates the satisfaction or deficiency of air conditioning from the temperature difference between the current temperature and the target temperature, and from the temperature change with respect to the time of the current temperature, per unit time supplied to the plurality of air conditioning regions. It has a function of evaluating whether the amount of heat is too small or too large and correcting the opening degree of each of the plurality of dampers. The processing unit is configured to determine the opening degree of the damper based on the degree of difference between the current temperature and the target temperature acquired at predetermined time intervals for each of the plurality of air conditioning regions. The processing unit includes a control table, a score table, an air volume table, and a determination unit. In the control table, the opening degree of the damper is associated with each of a plurality of sections in which the degree of difference between the current temperature and the target temperature is divided. The score table associates the score with the opening degree of the damper. In the air volume table, the air volume of the cold air or the warm air supplied by the heat source machine is associated with each of the plurality of sections in which the points are divided. When the current temperature is acquired, the determination unit obtains the opening degree of each of the plurality of dampers based on the control table, and then corresponds to the opening degree of each of the plurality of dampers based on the score table. The points are obtained, and the average value of the obtained points is used as the evaluation value, and the air volume of the heat source machine is determined based on the air volume table.

One aspect of the air conditioning system according to the present invention includes a heat source device, a distribution device, a plurality of temperature sensors, and a control device for the air conditioning system. The heat source machine generates cold air or warm air to be supplied to the building. The distribution device distributes the cold air or the warm air generated by the heat source machine to a plurality of air-conditioned areas in the building. The plurality of temperature sensors measure the temperature of each of the plurality of air conditioning regions. The control device is configured to acquire the temperature measured by the plurality of temperature sensors as the current temperature.

In the configuration of the present invention, the opening degree of the plurality of dampers is determined according to the amount of heat supplied to each of the plurality of air conditioning regions per unit time, and the evaluation value corresponding to the average value of the opening degree of each of the plurality of dampers. On the other hand, the amount of cold air or warm air supplied by the heat source unit is determined. Therefore, it is possible to use the full range of the capacity of the heat source unit regardless of the number of dampers.

FIG. 1 is a schematic configuration diagram showing an overall configuration of an embodiment. FIG. 2 is a block diagram showing a control device according to an embodiment. FIG. 3 is a diagram showing an example of a screen for setting a user's desired temperature in the embodiment. FIG. 4 is a flowchart showing the overall operation of the control device in the embodiment. FIG. 5 is a flowchart showing an operation of determining a control table for the control device in the embodiment.

In the embodiment described below, it is assumed that the building is a detached house and the air conditioning system is a whole building air conditioning system. This whole building air conditioning system is configured to supply almost the entire building as cold air or warm air generated by a heat source unit. In addition, this whole building air conditioning system is configured to perform air conditioning and ventilation.

The air conditioning system 10 shown in FIG. 1 is installed in a building 20 and includes a heat source machine 11, an air filter 12, and two transfer fans 13. Further, the air conditioning system 10 shown in FIG. 1 includes three or more dampers 14 and three or more outlets 15 for one transport fan 13. The number of dampers 14 and outlets 15 is preferably 5 or more and 7 or less. Since the damper 14 and the outlet 15 have a one-to-one correspondence, the number of the damper 14 and the outlet 15 is the same. The damper 14 here is realized by a VAV unit (VAV: Variable Air Volume). The number of transfer fans 13 and the number of dampers 14 and outlets 15 are appropriately determined according to the capacity of the heat source machine 11, the configuration and scale of the building 20, and the like. In the following, for the sake of simplicity, a case where the damper 14 and the outlet 15 are 5 each for one transport fan 13 will be described as an example.

Further, the air conditioning system 10 includes an air supply duct 16 that sends cold air or warm air from the heat source machine 11 to the outlet 15, and an outside air duct 171 that introduces outside air into the heat source machine 11. The air inside the building 20 is also introduced into the heat source machine 11. In FIG. 1, the route for introducing the air inside the building 20 into the heat source machine 11 is represented by reference numeral 172. This path 172 schematically represents the flow of air, and includes a gap between doors inside the building 20 and a place where air flows, such as a ventilation port. Further, the path 172 may be provided with a duct for reflux.

The air sent out by the heat source machine 11 includes cold air cooled by the heat source machine 11 and warm air heated by the heat source machine 11 according to the operating state of the heat source machine 11. Further, the air conditioning system 10 shown in FIG. 1 includes a control device 30 and a plurality of temperature sensors 18. Here, the heat source machine 11, the air filter 12, and the two transfer fans 13 are housed in a single housing 101 installed in the building 20 and are unitized. Therefore, a path (shown by a broken line in FIG. 1) from the heat source machine 11 to the two transfer fans 13 through the air filter 12 is formed inside the housing 101.

The air conditioning system 10 includes two transport fans 13 and ten dampers 14 in order to distribute the cold air or warm air generated by the heat source machine 11 to the ten outlets 15. The air sent out by the transport fan 13 is sent to the outlet 15 through the air supply duct 16. That is, the two transfer fans 13, the 10 dampers 14, and the air supply duct 16 constitute a distribution device 102 that distributes the cold air or warm air generated by the heat source machine 11 to the 10 outlets 15. The ratio of distributing the cold air or warm air generated by the heat source machine 11 to the 10 outlets 15 is determined by the air volume of each of the two transport fans 13 and the opening degree of each of the 10 dampers 14. That is, by controlling the distribution device 102 by the control device 30, the ratio of distributing the cold air or warm air generated by the heat source machine 11 to the 10 outlets 15 is determined. The amount of heat supplied to each of the plurality of air-conditioned regions 21 per unit time is determined by the temperature and flow rate of the air supplied from the outlet 15 to the air-conditioned region 21.

The air-conditioning region 21 here is a spatial region virtually defined so as to have a one-to-one correspondence with the air outlet 15. When cold air or warm air is supplied from a plurality of outlets 15 to a single room 23 as an air-conditioned space to be air-conditioned, a plurality of air-conditioned regions 21 exist in the single room 23. The air-conditioned space is not limited to the room 23, but may be a corridor or stairs. In the air conditioning system 10 shown in FIG. 1, a case where two air conditioning regions 21 exist in one room 23 is illustrated. The broken line shown in the room 23 does not partition the air-conditioning region 21 in the real space, but is a line tentatively set to indicate that two air-conditioning regions 21 exist.

The control device 30 acquires the temperature measured by each of the plurality of temperature sensors 18 as the current temperature at predetermined time intervals, controls the heat source machine 11 and the distribution device 102 based on the current temperature, and has 10 outlets 15. Adjust the amount of heat distributed per unit time to. It is desirable that each of the plurality of temperature sensors 18 is housed in a case having a vent so as to measure the air temperature without being affected by radiant heat.

The building 20 has a plurality of air-conditioned areas 21 inside. The air conditioning area 21 is a space to be air-conditioned. Each of the plurality of air-conditioned areas 21 generally has a one-to-one correspondence with the room 23 of the building 20. However, there may be a plurality of air-conditioned areas 21 in a single room 23, and a single air-conditioned area 21 may span a plurality of rooms 23. The air conditioning area 21 is not limited to the room 23, but may be a corridor or stairs. An outlet 15 is arranged in each of the plurality of air conditioning regions 21. That is, air is supplied from the outlet 15 to each of the plurality of air conditioning regions 21.

In principle, the temperature sensor 18 and the room 23 (which may be a corridor or stairs), which is an air-conditioned space, have a one-to-one correspondence, and the temperature sensor 18 measures the temperature of the room 23. Therefore, when a plurality of air-conditioned regions 21 exist in a single room 23, one temperature sensor 18 is arranged in the room 23. In the air conditioning system 10 shown in FIG. 1, an example in which one temperature sensor 18 is arranged in a single room 23 having two air conditioning regions 21 is shown. Therefore, the air conditioning system 10 shown in FIG. 1 includes nine temperature sensors 18 for ten outlets 15. When a plurality of air-conditioned areas 21 exist in a single room 23, the temperature measured by one temperature sensor 18 arranged in the room 23 is shared by the plurality of air-conditioned areas 21. That is, the air conditioning region 21 has a one-to-one correspondence with the damper 14, but when the room 23 has a one-to-many correspondence with the damper 14, the opening degree of the plurality of dampers 14 is determined by the temperature measured by one temperature sensor 18. However, when a plurality of air conditioning regions 21 exist in a single room 23, two or more temperature sensors 18 may be arranged.

The place where the temperature sensor 18 is arranged is determined so that the air blown out by the outlet 15 does not directly hit the temperature sensor 18. The position of the temperature sensor 18 is a wall surface surrounding the air conditioning region 21, and is set so as to have a height of, for example, 110 [cm] or more and 120 [cm] or less from the floor. The position of such a temperature sensor 18 can be appropriately changed.

In a room 23 in which an atrium is formed and the dimension from the floor to the ceiling is large, a plurality of outlets 15 may be arranged vertically apart from each other. In such a room 23, a plurality of air-conditioning regions 21 arranged one above the other in a single room 23 are formed. In the room 23 where the atrium is formed, there is no ceiling on the first floor, and the ceiling on the second floor is often the ceiling of the room 23. When the room 23 in which the atrium is formed includes two air-conditioned areas 21 arranged one above the other, the temperature sensor 18 is arranged in each of the two air-conditioned areas 21. Then, one temperature sensor 18 is arranged at a position at the above-mentioned height from the floor on the first floor, and the other temperature sensor 18 is arranged at a position above the above-mentioned height from the height corresponding to the floor on the second floor. To. The position of such a temperature sensor 18 is only an example, and can be appropriately changed.

The heat source unit 11 is a heat pump type air conditioner including one indoor unit 111 and one outdoor unit 112, and the air from the indoor unit 111 is supplied to the air conditioning region 21 through the air supply duct 16. The air taken in by the indoor unit 111 is the outdoor air taken in from the underfloor 22 of the building 20 through the outside air duct 171 and the indoor air taken in from the inside of the building 20 through the path 172. The outside air duct 171 is connected to a ventilation fan 19 that takes in the air under the floor 22.

The heat source unit 11 performs a cooling operation in which cold air is sent out from the indoor unit 111 in the summer, and a heating operation in which the warm air is sent out from the indoor unit 111 in the winter. Switching between the cooling operation and the heating operation of the heat source unit 11 is performed in an intermediate period such as spring or autumn. The difference between the cooling operation and the heating operation is whether the set temperature of the heat source machine 11 is used as the upper limit value or the lower limit value. The heat source unit 11 operates so that the temperature of the cold air sent out from the indoor unit 111 does not exceed the set temperature of the heat source unit 11 which is the upper limit value during the cooling operation, and the warm air sent out from the indoor unit 111 during the heating operation. It operates so that the temperature of the heat source machine 11 does not fall below the set temperature of the heat source machine 11, which is the lower limit value. In the following description, the amount of heat during the heating operation means the amount of heat of the warm air, and the amount of heat during the cooling operation means the amount of heat of the cold air.

The air from the indoor unit 111 is sent to the transfer fan 13 through the air filter 12. The air filter 12 is preferably a HEPA filter (HEPA: High Efficiency Particulate Air). If the air filter 12 is a HEPA filter, fine particulate matter can be removed. Here, for dust and insects having a relatively large size, before introducing air into the air filter 12 by a filter arranged at one or more places in the path including the ventilation fan 19, the outside air duct 171 and the indoor unit 111. Will be removed. Therefore, clogging of the air filter 12 is suppressed.

In the air conditioning system 10, the air supply duct 16 includes two branch ducts 161 into which the air sent out by the two transport fans 13 is introduced. That is, the air sent from the indoor unit 111, passing through the air filter 12, and then sent to the two transfer fans 13 is introduced into the branch duct 161 that is different for each transfer fan 13. The two transfer fans 13 accelerate the air from the indoor unit 111, respectively. In this air conditioning system 10, each of the two branch ducts 161 is further branched into five terminal ducts 162. That is, the air from the indoor unit 111 is introduced into the terminal duct 162 of the 10 system.

A damper 14 is arranged in each of the terminal ducts 162 of the 10 systems. The opening degree of the damper 14 is adjustable, and the flow rate of air passing through the end duct 162 is changed by the change of the opening degree. An outlet 15 is connected to the end of the end duct 162. Therefore, the air from the indoor unit 111 is sent to the damper 14 through the transport fan 13, the flow rate is adjusted by the damper 14, and then the air is blown out to the air conditioning region 21 through the air outlet 15.

The air conditioning system 10 described above constantly ventilates the building 20. Therefore, as a general rule, the transfer fan 13 always operates. Further, the air conditioning system 10 stops the heat source machine 11 when the cooling operation or the heating operation is not required. That is, the outside air introduced from the outside air duct 171 to the indoor unit 111 is sent to the air conditioning region 21 by the transport fan 13 for ventilation even when the heat source unit 11 does not cool or heat. However, it is possible to stop the transfer fan 13 as needed for maintenance and the like. Further, when ventilation is performed by a ventilation fan or the like, the transport fan 13 may be stopped.

Hereinafter, the control device 30 will be described in detail. As shown in FIG. 2, the control device 30 includes a processing unit 31 and a control unit 32. The processing unit 31 determines the amount of heat to be supplied to each of the plurality of air conditioning regions 21. The control unit 32 controls the heat source machine 11, the transfer fan 13, and the damper 14. Further, the control device 30 includes an interface unit 33 for inputting and outputting information to and from the operation display device 40.

The operation display device 40 includes a touch panel including a display device and a touch pad, and functions as a user interface (GUI: Graphic User Interface). That is, the control device 30 outputs information to the display device included in the operation display device 40, and receives the information input from the touch pad included in the operation display device 40. Various screens are displayed on the operation display device 40 as needed. The operation display device 40 may be a smartphone, a tablet computer, a personal computer, or the like, even if it is not dedicated. Further, instead of the operation display device 40, the display device and the operation device may be individually provided.

The screen displayed on the operation display device 40 includes a screen for associating the damper 14 with the room 23, a screen for associating the temperature sensor 18 with each of the plurality of rooms 23 in the building 20, and the like. When the correspondence between the room 23 and the damper 14 is determined and the correspondence between the room 23 and the temperature sensor 18 is determined, the room 23, the damper 14, and the temperature sensor 18 are linked. Further, since the outlet 15 has a one-to-one correspondence with the damper 14, once the correspondence between the room 23 and the damper 14 is determined, the room 23 and the outlet 15 are connected.

By the way, one of the screens displayed on the operation display device 40 is the screen P1 for determining the user's desired temperature of the room 23 (which may be a corridor or stairs) as shown in FIG. This screen P1 has a plurality of button groups B1, B2, and B3 that receive the user's desired temperature in each of the plurality of rooms 23. The screen P1 is provided with a field F1 indicating a room name. In the example shown in FIG. 3, it is possible to determine the user's desired temperature of the three rooms 23 on one screen P1. When the number of rooms 23 included in the building 20 exceeds the number of rooms 23 that can be displayed on one screen P1, a button for switching to another screen is displayed on the screen P1. When this button is operated, the screen is switched to another screen, and the user's desired temperature of the other room 23 can be set.

In the example shown in FIG. 3, in the button group B1, three buttons B10, B11, and B12 are arranged one above the other. The button B10 in the center corresponds to a reference temperature set for the entire building 20. The reference temperature can be set by the user. Further, the air conditioning system 10 may have an initial value of a reference temperature set at the time of shipment from the factory. When this button B10 is operated, the user's desired temperature is set to the reference temperature. Further, when the upper button B11 is operated, the user's desired temperature is set higher than the reference temperature, and when the lower button B12 is operated, the user's desired temperature is set lower than the reference temperature. When the button B11 or the button B12 is operated, the control device 30 changes the user's desired temperature in predetermined temperature increments for each operation. The selected temperature is displayed numerically in association with the button group B1.

As an example, it is assumed that the reference temperature is 26.0 [° C.], the predetermined temperature is 0.5 [° C.], and the user's desired temperature is the reference temperature. In this case, if the button B11 is operated once, the user's desired temperature is set to 26.5 [° C.], and if the button B12 is operated once, the user's desired temperature is set to 25.5 [° C.]. Further, when the user's desired temperature is the reference temperature and the button B11 is operated twice, the user's desired temperature is set to 27.0 ° C. Regardless of the set user's desired temperature, when the button B10 is operated, the user's desired temperature returns to the reference temperature of 26.0 [° C.]. The numerical values shown here are examples of the case where the air conditioning system 10 is in the cooling operation period, and are not intended to be limited to these numerical values.

Here, the configuration and operation of the button group B1 have been described. Button groups B2 and B3 have the same configuration and operation. Further, although the configuration in which the user's desired temperature of the three rooms 23 can be set on one screen is illustrated, the number of rooms 23 in which the user's desired temperature is set on one screen can be changed by design. Further, the configuration and operation of the button groups B1, B2, and B3 are not limited to the above-described configuration. For example, a plurality of button groups B1, B2, and B3 may each have five buttons. In this configuration, in each of the plurality of button groups B1, B2, and B3, the button corresponding to the selected user's desired temperature may be displayed in a different display state from the remaining buttons. The different display states are realized by at least one element, for example, the size of the button, the color of the button, the mark added to the button, and the like.

When the user's desired temperature is determined by using the screen P1 for each of the plurality of rooms 23, the control device 30 stores the user's desired temperature in the storage unit 34. The storage unit 34 stores the user's desired temperature for each of the plurality of rooms 23.

The processing unit 31 of the control device 30 shown in FIG. 2 includes an acquisition unit 310 that communicates with each of the plurality of temperature sensors 18. In the air conditioning system 10, the acquisition unit 310 is configured to perform wired communication with the temperature sensor 18 and periodically inquire about the current temperature to the plurality of temperature sensors 18. That is, the acquisition unit 310 acquires the current temperature from each temperature sensor 18 by polling the plurality of temperature sensors 18. The cycle in which the acquisition unit 310 inquires about the current temperature from each of the plurality of temperature sensors 18 is defined in the range of 1 minute or more and 15 minutes or less, preferably 5 minutes or more and 10 minutes or less. This cycle is determined by the measurement accuracy of the temperature sensor 18, the speed at which the temperature of the room 23 changes, and the like.

The current temperature acquired by the acquisition unit 310 from the temperature sensor 18 is the temperature measured by the temperature sensor 18 when the acquisition unit 310 inquires of the temperature sensor 18. However, it may be the average value of the temperature in a predetermined period determined in the vicinity of the time when the temperature sensor 18 receives the inquiry from the acquisition unit 310. This predetermined period is either before or after the time when the temperature sensor 18 receives an inquiry from the acquisition unit 310, or straddles that time. This predetermined period is set, for example, in the range of 10 seconds or more and 3 minutes or less, preferably 30 seconds or more and 1 minute or less.

The processing unit 31 of the control device 30 includes a first calculation unit 311, a second calculation unit 312, and a determination unit 313 in addition to the acquisition unit 310. Here, for the sake of explanation, a positive integer value i representing the order is associated with the time series of the current temperature acquired by the acquisition unit 310, and the identification information for distinguishing the plurality of rooms 23 from each other is represented by j. The identification information j is represented by, for example, a positive integer value.

The first calculation unit 311 determines the target temperature for each of the plurality of rooms 23 based on the user's desired temperature stored in the storage unit 34. Depending on the operation of the control device 30, the target temperature may be different from the user's desired temperature, but here, the case where the target temperature is the same as the user's desired temperature will be described. The first calculation unit 311 uses the current temperature acquired by the acquisition unit 310 as an input to calculate the temperature difference between the current temperature acquired at predetermined time intervals and the current temperature of the target temperature. When the current temperature acquired by the acquisition unit 310 is expressed by θj1 (i) and the target temperature is expressed by θj2 for the room 23 whose identification information is j, the first calculation unit 311 expresses the temperature difference Δθj (i) by Δθj. (I) = θj1 (i) −θj2 is calculated and output with positive and negative signs. The first calculation unit 311 obtains the temperature difference Δθj (i) for each of the plurality of rooms 23. The temperature difference Δθj (i) obtained by the first calculation unit 311 is temporarily stored in the storage unit 34 in association with the identification information j of the room 23.

The storage unit 34 stores at least two temperature differences Δθj (i) and Δθj (i-1) for each room 23. The two temperature differences Δθj (i) and Δθj (i-1) stored in the storage unit 34 are updated when the acquisition unit 310 acquires the current temperature θj1 (i). That is, the storage unit 34 stores the latest temperature difference Δθj (i) and the previous temperature difference Δθj (i-1). The latest temperature difference Δθj (i) is a temperature difference obtained in the period from the acquisition of the current temperature θj1 (i) by the acquisition unit 310 to the acquisition of the next current temperature θj1 (i + 1). Further, the previous temperature difference Δθj (i-1) is the period before the acquisition unit 310 acquires the current temperature θj1 (i) and after the acquisition of the previous previous current temperature θj1 (i-1). It is the temperature difference obtained in.

The second calculation unit 312 calculates the temperature change Vj (i) every time the acquisition unit 310 acquires the current temperature θj1 (i). The temperature change Vj (i) is the difference between the current temperatures θj1 (i) and θj1 (i-1) acquired by the acquisition unit 310 for two times. That is, the second calculation unit 312 obtains the temperature change Vj (i) in a unit time by the calculation of Vj (i) = θj1 (i-1) −θj1 (i). The obtained temperature change Vj (i) represents the temperature change with time. Since the first calculation unit 311 obtains the temperature difference Δθj (i), the second calculation unit 312 obtains the current temperatures θj1 (i) and θj1 (i-1) in order to obtain the temperature change Vj (i). Instead of the difference, the difference between the two temperature differences Δθj (i) and Δθj (i-1) may be obtained. If the target temperature θj2 does not change during the period in which the acquisition unit 310 acquires the current temperatures θj1 (i) and θj1 (i-1) for two times, the current temperatures θj1 (i) and θj1 (i-1) for two times are not changed. And the difference between the two temperature differences Δθj (i) and Δθj (i-1) are the same values.

The determination unit 313 uses the i-th temperature difference Δθj (i) obtained by the first calculation unit 311 and the temperature change Vj (i) obtained by the second calculation unit 312 for each of the plurality of rooms 23. The amount of heat supplied from the heat source machine 11 is determined for each of the plurality of rooms 23. The amount of heat distributed to each of the plurality of rooms 23 is determined by the opening degree of each of the plurality of dampers 14, the air volume of each of the two transport fans 13, and the amount of heat generated by the heat source machine 11 per unit time. That is, the determination unit 313 determines the opening degree of each of the plurality of dampers 14 based on the temperature difference Δθj (i) and the temperature change Vj (i) of each of the plurality of rooms 23, and then the two transport fans 13 respectively. The amount of air and the amount of heat generated by the heat source machine 11 per unit time are determined. Here, when there are a plurality of outlets 15 in a single room 23, the amount of heat supplied to the room 23 from each of the plurality of outlets 15 corresponding to the single room 23 is set to the same amount of heat in principle. Be done.

A specific operation example of the determination unit 313 will be described below. In the following, after explaining the function of determining the opening degree of the damper 14 in the case where one room 23 has one outlet 15, two units of the two units are based on the opening degree of all the dampers 14 arranged in the building 20. The function of determining the air volume of the transfer fan 13 and the amount of heat generated by the heat source machine 11 per unit time will be described. The function of determining the opening degree of the damper 14 will be described by omitting the identification information j of the room 23. Therefore, in the following description, the current temperature is represented by θ1 (i), the target temperature is represented by θ2, and the temperature difference is represented by Δθ (i) (= θ1 (i) −θ2)). The target temperature θ2 may be changed, but for the sake of simplicity, the description will be made assuming that the target temperature θ2 is not changed. Here, since one outlet 15 corresponds to one room 23, the room 23 can be read as an air-conditioned region 21.

The determination unit 313 includes a control table 314 having a format as shown in Table 1 in which the temperature difference and the opening degree are associated with each other. In the control table 314, the temperature difference is divided into a plurality of sections, and the opening degree of the damper 14 corresponds to each of the plurality of sections. Table 1 shows a control table 314 during which the air conditioning system 10 is in cooling operation in the assumed standard heat load room 23.

In the cooling operation, when the current temperature exceeds the target temperature, the cold air from the heat source machine 11 must be supplied to the room 23 to maintain the current temperature near the target temperature. In the cooling operation, in the air-conditioning region 21, the fact that the current temperature exceeds the target temperature indicates that the cooling is insufficient. Further, in the air conditioning region 21, the fact that the current temperature matches the target temperature indicates the satisfaction of cooling, and the fact that the current temperature is below the target temperature indicates that the cooling is excessive.

When the cooling is insufficient, it is necessary to increase the amount of cold heat supplied to the room 23 per unit time as the current temperature is higher than the target temperature. In other words, if the cooling is insufficient, it can be said that the degree of the cooling shortage is greater as the current temperature exceeds the target temperature and the difference between the current temperature and the target temperature is large.

The first calculation unit 311 obtains the temperature difference obtained by subtracting the target temperature from the current temperature with positive and negative signs. Therefore, if the temperature difference obtained by the first calculation unit 311 is positive, it indicates that the cooling is insufficient, and the larger the temperature difference, the greater the degree of the insufficient cooling. In the control table 314 of Table 1, the section where the temperature difference is positive is provided more than the section where the temperature difference is negative.

As an example, the control table 314 defines five sections with an interval of 1 [° C.] for the temperature difference. Since this control table 314 is used during the cooling operation period, in this control table 314, a relatively large opening as the opening of the damper 14 corresponds to a section in which the temperature difference is positive and relatively large. There is. That is, in the control table 314, the opening degree of the damper 14 is set so that when the cooling is insufficient, the larger the degree of the insufficient cooling, the larger the amount of cooling heat supplied to the room 23 per unit time. ..

In the control table 314 shown in Table 1, even if the temperature difference is negative, the damper is supplied so as to supply heat so that the temperature of the air conditioning region 21 does not rise until the current temperature drops by 1 [° C] from the target temperature. The opening degree of the damper 14 of 14 is set (25 [%]). Further, in the control table 314 shown in Table 1, when the temperature difference exceeds 2 [° C.], the opening degree of the damper 14 is set to be maximum (100 [%]). Further, in the control table 314 shown in Table 1, it is defined that the opening degree of the damper 14 is minimized when the current temperature drops by more than 1 [° C.] with respect to the target temperature (5 [%]. ]). The minimum opening of the damper 14 is set so that the minimum ventilation can be ensured in the room 23. However, if the room 23 can be ventilated even if the transport fan 13 is stopped, the damper 14 may be closed. In this case, the opening degree of the damper 14 is 0 [%].

By the way, the temperature difference can be rephrased as "insufficiency". The degree of deficiency added to Table 1 is represented by an integer value in five stages from "-1" to "3" corresponding to the temperature difference. When the degree of deficiency is 0, it indicates the satisfaction of air conditioning, when the degree of deficiency is positive, it indicates the deficiency of air conditioning, and when the degree of deficiency is negative, it indicates the excess of air conditioning. The lack of air conditioning is represented by an integer value in three stages, and the larger the value, the greater the degree of lack of air conditioning.

The determination unit 313 uses the control table 314 of the form shown in Table 2 during the period when the air conditioning system 10 is in the heating operation. In the heating operation, when the current temperature is lower than the target temperature, the warm air from the heat source unit 11 must be supplied to the room 23 to maintain the current temperature near the target temperature. In the heating operation, in the air conditioning region 21, the fact that the current temperature is below the target temperature indicates that the heating is insufficient. In Table 2, more sections where the temperature difference is negative are provided than sections where the temperature difference is positive. Further, the degree of deficiency is associated so that the larger the absolute value is, the larger the temperature difference is.

Each time the acquisition unit 310 acquires the current temperature θ1 (i), the determination unit 313 receives the temperature difference Δθ (i) from the first calculation unit 311 and determines the section to which the temperature difference Δθ (i) belongs in the control table 314. Ask from. The determination unit 313 determines the opening degree of the damper 14 according to the section to which the temperature difference Δθ (i) belongs. The opening degree of the damper 14 set in the control table 314 of Tables 1 and 2 is the default value of the opening degree with respect to the temperature difference in this air conditioning system 10. That is, the control table 314 shown in Tables 1 and 2 is a control table 314 corresponding to the air conditioning region 21 assumed as a standard. The degree of deficiency in Tables 1 and 2 is not essential.

Here, since the temperature difference Δθ (i) is a value obtained by subtracting the target temperature from the current temperature, as can be seen by comparing Table 1 and Table 2, it depends on whether the air conditioning system 10 is in cooling operation or heating operation. , The positive and negative signs of the temperature difference Δθ (i) indicating the state of insufficient air conditioning are inverted. In the following description, a case where the air conditioning system 10 is in a cooling operation will be described as an example. Therefore, when the air conditioning system 10 is in the heating operation, it is necessary to reverse the positive and negative signs of the temperature difference Δθ (i) and read them.

By the way, when the cooling is insufficient, the larger the temperature difference, the larger the amount of heat supplied to the room 23 per unit time, the shorter the time until the current temperature reaches the target temperature. Further, if the heat load is the same for the plurality of rooms 23 and the amount of heat supplied to the rooms 23 per unit time is the same, it is considered that the changes in the temperature of the rooms 23 are substantially the same. However, the heat load of each of the plurality of rooms 23 in the building 20 differs depending on factors such as the volume of the room 23, the amount of heat flowing into or out of the room 23, and the amount of heat generated in the room 23. Therefore, if the amount of heat supplied per unit time is the same for the plurality of rooms 23, the speed at which the current temperature changes will vary.

Now, it is assumed that the target temperatures are set to be the same for the plurality of rooms 23 having different heat loads, and the temperatures at the time when air conditioning is started are the same. In this case, if the amount of heat supplied per unit time to the plurality of rooms 23 is equal, the time until the current temperature reaches the target temperature varies. That is, in the room 23 where the heat load is relatively large, the time until the current temperature reaches the target temperature may be long, and in the room 23 where the heat load is relatively small, the current temperature exceeds the target temperature. Excessive cooling can occur. Further, when the current temperature reaches the target temperature and the amount of heat supplied to the room 23 per unit time does not match the heat load of the room 23, the fluctuation of the current temperature may become large.

In short, when the heat load is different in each of the plurality of rooms 23 of the building 20, the amount of heat supplied to the room 23 per unit time is determined based only on the temperature difference between the current temperature and the target temperature. At 23, there is a possibility that the characteristics of the change in the current temperature will vary. In other words, if the heat load of each of the plurality of rooms 23 is different, the amount of heat supplied to the room 23 per unit time may not be within an appropriate range and may be too small or too large.

In the air conditioning system 10, the determination unit 313 determines the opening degree of the damper 14 not only based on the temperature difference but also on the temperature change with time. That is, the determination unit 313 includes a correction unit 315 that corrects the opening degree set in the control table 314. When the degree of insufficient air conditioning is relatively large and the temperature change with time is relatively small, the correction unit 315 corrects the opening degree of the damper 14 so that the temperature change with time is relatively large. Further, when the air conditioning is sufficient or excessive, or the degree of air conditioning is relatively small and the temperature change with respect to time is relatively large, the correction unit 315 is a damper so that the temperature change is relatively small. The opening degree of 14 is corrected. Here, the magnitude of the temperature change with respect to time represents the speed of the temperature change in the room 23.

The condition for whether or not to correct the opening degree of the damper 14 is determined by combining the temperature difference and the temperature change with time. The determination unit 313 evaluates whether or not the air conditioning is insufficient by comparing the temperature difference with the first threshold value. Further, the determination unit 313 evaluates whether or not the amount of heat supplied to the room 23 per unit time is too small by comparing the temperature change with time with the second threshold value. When the temperature change with respect to time is smaller than the second threshold value, it means that the amount of heat supplied to the room 23 per unit time is too small with respect to the heat load of the room 23.

The determination unit 313 also defines a third threshold value to be compared with the temperature difference and a fourth threshold value to be compared with the temperature change. The third threshold is used to evaluate whether or not the air conditioner is almost satisfied by comparing with the temperature difference. The fourth threshold value is used to evaluate whether or not the amount of heat supplied to the room 23 per unit time is excessive. When the temperature change with respect to time is larger than the fourth threshold value, it means that the amount of heat supplied to the room 23 per unit time is excessive with respect to the heat load of the room 23.

By the way, the correction unit 315 is one selected from the latest temperature difference Δθ (i) and the previous temperature difference Δθ (i-1) as the temperature difference to be compared with the first threshold value and the third threshold value. Use the temperature difference. Since the storage unit 34 stores the two temperature differences Δθ (i) and Δθ (i-1), either one may be used, but in the following, the previous temperature difference Δθ (i-1) is used. The case of using it will be described as an example. That is, the determination unit 313 determines the opening degree of the damper 14 based on the latest temperature difference Δθ (i), and compares the previous temperature difference Δθ (i-1) with the first threshold value and the third threshold value. .. Hereinafter, the first threshold value will be described as TH1, the second threshold value as TH2, the third threshold value as TH3, and the fourth threshold value as TH4.

The correction unit 315 corrects the opening degree of the damper 14 so that the temperature change V (i) increases when the conditions of Δθ (i-1)> TH1 and V (i) <TH2 are satisfied. The condition here indicates that the degree of insufficient air conditioning is relatively large because the temperature difference Δθ (i-1) is larger than the first threshold value TH1, and the temperature change is smaller than the second threshold value TH2, so that the unit is in the room 23. It means that the amount of heat supplied per hour is too small. That is, the room 23 in which this condition is satisfied has a heat load larger than that of the room 23 assumed as a standard, and the amount of heat supplied per unit time is too small. Therefore, the correction unit 315 corrects the control table 314 so that the opening degree of the damper 14 corresponding to the room 23 is increased and the amount of heat supplied per unit time is increased. By making such a correction, the control device 30 makes it possible to provide the control table 314 corresponding to the heat load of the room 23.

Further, the correction unit 315 corrects the opening degree of the damper 14 so that the temperature change V (i) decreases when the condition Δθ (i-1) <TH3 and V (i)> TH4 is satisfied. The condition here indicates that the air conditioner is almost satisfied or excessive because the temperature difference Δθ (i-1) is smaller than the third threshold value TH3, and the temperature change is larger than the fourth threshold value TH4 in the room 23. It means that the amount of heat supplied per unit time is excessive. When the air conditioner is almost satisfied, the temperature difference between the current temperature and the target temperature is close to 0 [° C.] even if the air conditioner is insufficient, and the air conditioner is satisfied. That is, the room 23 in which this condition is satisfied has a heat load smaller than that of the room 23 assumed as a standard, indicating that the amount of heat supplied per unit time is excessive. Therefore, the correction unit 315 corrects the control table 314 so as to reduce the opening degree of the damper 14 corresponding to the room 23. By performing such a correction, the control device 30 reduces the possibility that the temperature of the room 23 greatly fluctuates in the vicinity of the target temperature θ2.

The first threshold value TH1 is used to evaluate that the difference between the current temperature θ1 (i-1) and the target temperature θ2 on the insufficient side of air conditioning is relatively large. Therefore, the first threshold value TH1 is a relatively large value, and is set to, for example, 1 [° C.]. The second threshold TH2 is selected from, for example, a range of 0 [° C.] or more and 1 [° C.] or less, preferably 0.2 [° C.] or more and 0.5 [° C.] or less, and is 0.3 as an example. It is set to [℃]. On the other hand, the third threshold value TH3 is used to evaluate that the difference between the current temperature θ1 (i-1) and the target temperature θ2 is relatively small on the side where the air conditioning is sufficient or excessive or the air conditioning is insufficient. Therefore, the third threshold value TH3 is a relatively small value, and is set to, for example, 0.5 [° C.]. The fourth threshold TH4 is, for example, selected from the range of 0.2 [° C.] or more and 1 [° C.], preferably selected from the range of 0.3 [° C.] or more and 0.7 [° C.] or less, and 0. It is set to 5 [° C].

The method of correcting the control table 314 will be specifically described below. When the correction unit 315 corrects the opening degree of the damper 14 so as to be relatively large, the correction unit 315 uses the corrected control table 314 as shown in Table 3.

Here, since it is assumed that the air conditioning system 10 is in cooling operation, the control table 314 shown in Table 3 is created by correcting the control table 314 shown in Table 1. That is, when the temperature difference Δθ (i) is 1 [° C.] or more and less than 2 [° C.], the opening degree of the damper 14 is changed from 70 [%] to 100 [%], and the temperature difference Δθ (i) is 0 [. When the temperature is equal to or higher than 1 [° C.], the opening degree of the damper 14 is changed from 40 [%] to 70 [%]. Further, in the control table 314 of Table 3, when the temperature difference Δθ (i) is -1 [° C.] or more and less than 0 [° C.], the opening degree of the damper 14 is 25 [%] with respect to the control table 314 of Table 1. ] Has been changed to 40 [%].

Here, since the upper limit of the opening degree of the damper 14 is 100 [%], when the temperature difference Δθ (i) is 2 [° C.] or more, the opening degree of the damper 14 is also set in the control table 314 of Table 3. 100 [%] is maintained. Further, here, since the air conditioning system 10 constantly ventilates, the damper 14 is not closed even when the temperature difference Δθ (i) is less than -1 [° C.], and the damper 14 has an opening degree of 5 [%]. ] Is maintained.

When the control table 314 is corrected as shown in Table 3 for any room 23 of the plurality of rooms 23 in the building 20, the determination unit 313 determines the corrected control table 314 for the room 23. Is used to determine the opening degree of the damper 14. Further, even if control is performed using the corrected control table 314, the temperature difference Δθ (i-1) is still larger than the first threshold value TH1 and the temperature change V (i) is smaller than the second threshold value TH2. There is. In this case, the correction unit 315 corrects the control table 314 for the room 23 so that the opening degree of the damper 14 is further increased. Examples of the corrected control table 314 are shown in Tables 4 and 5.

Here, the air conditioning system 10 needs to be designed according to the volume of the room 23 and the like so that the opening degree of the damper 14 does not reach 100 [%] when the current temperature is the target temperature. .. Further, it is desirable that the correction unit 315 limits the upper limit of the opening degree of the damper 14. For example, when the opening degree of the damper 14 is increased with respect to the control table 314 shown in Table 1, the correction unit 315 corrects to the control table 314 of Table 3 in the first stage, and to the control table 314 of Table 4 in the second stage. to correct. Then, it is desirable that the correction unit 315 limits the upper limit when increasing the opening degree of the damper 14. It is desirable that the upper limit when correcting the opening degree of the damper 14 is about 1 to 3 steps with respect to the default value.

On the other hand, when the correction unit 315 corrects the opening degree of the damper 14 so as to be relatively small, the correction unit 315 uses the corrected control table 314 as shown in Table 6.

The control table 314 shown in Table 6 is corrected so that the opening degree of the damper 14 is relatively smaller than that of the control table 314 shown in Table 1. That is, when the temperature difference Δθ (i) is 1 [° C.] or more and less than 2 [° C.], the opening degree of the damper 14 is changed from 70 [%] to 40 [%], and the temperature difference Δθ (i) is 0. When it is 5 [° C.] or more and less than 1 [° C.], the opening degree of the damper 14 is changed from 40 [%] to 25 [%]. Further, in the control table 314 of Table 4, when the temperature difference Δθ (i) is -1 [° C.] or more and less than 0.5 [° C.], the opening degree of the damper 14 is 25 with respect to the control table 314 of Table 1. It has been changed from [%] to 5 [%]. Even when the correction unit 315 corrects to reduce the opening degree of the damper 14, the opening degree of the damper 14 can be corrected in a plurality of stages as in the case of increasing the opening degree of the damper 14. Further, it is desirable that the correction unit 315 limits the lower limit of the opening degree of the damper 14.

Here, when the temperature difference Δθ (i) is less than -1 [° C.], the opening degree of the damper 14 is 5 [, similar to the control table 314 shown in Table 3, because the air conditioning system 10 constantly ventilates. %] Is maintained. Further, when the temperature difference Δθ (i) is 2 [° C.] or more, the opening degree of the damper 14 is maintained at 100 [%].

The correction unit 315 does not have a temperature difference Δθ (i) between the current temperature θ1 (i) acquired by the acquisition unit 310 and the target temperature θ2, but the current temperature θ1 (i-1) one time before and the target temperature θ2. The temperature difference Δθ (i-1) is compared with the first threshold TH1 and the third threshold TH3. On the other hand, the correction unit 315 may compare the latest temperature difference Δθ (i) with the first threshold value TH1 and the third threshold value TH3.

Tables 3, 4, 5, and 6 show the corrected control table 314 when the air conditioning system 10 is in the cooling operation. On the other hand, when the air conditioning system 10 is in the heating operation, the correction unit 315 corrects the control table 314 shown in Table 2. The opening degree of the damper 14 is corrected in the same manner as in Table 3, Table 4, Table 5, and Table 6 with respect to Table 1. Further, the air conditioning system 10 described above uses the control table 314 in which the temperature difference and the opening degree of the damper 14 are associated with each other. However, if the degree of deficiency is used instead of the temperature difference, Tables 3, 4, and 5 are used. , Table 6 can also be used when the air conditioning system 10 is in the heating operation. The numerical values in the control table 314 described above are values used for explaining the operation, and are appropriately changed depending on the design.

In the above-mentioned operation, the positive and negative signs of the temperature difference are reversed depending on whether the air conditioning system 10 is in the cooling operation or the heating operation. On the other hand, if the first calculation unit 311 replaces the two terms of the current temperature and the target temperature when calculating the temperature difference according to the cooling operation or the heating operation, regardless of whether the cooling operation or the heating operation is performed. It is possible to match the positive and negative signs of the temperature difference with respect to the degree of lack of air conditioning. That is, the first calculation unit 311 adopts the value obtained by subtracting the target temperature from the current temperature as the temperature difference during the cooling operation, and the value obtained by subtracting the current temperature from the target temperature as the temperature difference during the heating operation. It may be configured to be adopted. In this case, the determination unit 313 does not need to use different control tables 314 for the cooling operation and the heating operation, and the control table as shown in Table 3, Table 4, Table 5, and Table 6 for both the cooling operation and the heating operation. 314 can be shared. For the temperature change in a unit time, the value obtained by subtracting the previous current temperature from the latest current temperature is used during the cooling operation, and the value obtained by subtracting the latest current temperature from the previous current temperature during the heating operation. May be used. In this case, when the correction unit 315 compares the temperature change with the second threshold value TH2 and the fourth threshold value TH4, it is not necessary to switch the magnitude relationship between the cooling operation and the heating operation, and the above-mentioned magnitude relationship is referred to as the cooling operation. It can be shared with both heating operation.

By the way, the amount of heat supplied per unit time to each of the plurality of rooms 23 is the amount of heat generated by the heat source machine 11 per unit time, the air volume of each of the two transport fans 13, and the opening of each of the 10 dampers 14. It depends on the degree. Further, when the air volume of each of the two transport fans 13 and the opening degree of each of the 10 dampers 14 are determined, the volume of air supplied to each of the 10 air conditioning regions 21 per unit time is determined. That is, the heat energy generated by the heat source machine 11 per unit time corresponds to the ratio of the volume of air supplied to each of the 10 air conditioning regions 21 per unit time under ideal conditions where there is no heat loss. It is distributed to 10 air-conditioned areas 21. The amount of heat energy generated by the heat source machine 11 per unit time is equal to the total amount of heat energy supplied to each of the rooms 23 in the building 20 under ideal conditions where there is no heat loss.

In the above operation, when the acquisition unit 310 acquires the current temperature of each of the plurality of rooms 23, the determination unit 313 obtains the opening degree of the damper 14 corresponding to each of the plurality of rooms 23. In order to determine the amount of heat per unit time to be distributed to each of the plurality of rooms 23, the determination unit 313 obtains the air volume of each of the two transport fans 13 after obtaining the opening degree of the damper 14. The air volume of the two transport fans 13 can be selected from a plurality of stages, and in this air conditioning system 10, the air volume of the two transport fans 13 is selected from four stages, respectively.

In this air conditioning system 10, since one transport fan 13 is associated with five dampers 14, the determination unit 313 applies the air volume of one transport fan 13 to the five dampers 14 corresponding to the transport fan 13. Determined based on the opening degree of. The air volume of the transport fan 13 is associated with the opening degree of the damper 14 in advance. The determination unit 313 determines the opening degree of each of the five dampers 14 corresponding to one transfer fan 13, and then determines the air volume of the transfer fan 13.

Hereinafter, the operation in which the control device 30 determines the air volume of the conveyor fan 13 will be described. In order to determine the air volume of the transfer fan 13 based on the opening degree of the damper 14, the determination unit 313 has a score table 316 as shown in Table 7 in which the points are associated with the opening degree of the damper 14, and the points of the transfer fan 13 are assigned to the points. It is provided with a fan air volume table 317 as shown in Table 8 to which the air volume is associated. In the fan air volume table 317, the air volume of the conveyor fan 13 is associated with each of the plurality of sections in which the points are divided. The air volume in the fan air volume table 317 means the volume per hour. The determination unit 313 obtains a score corresponding to the opening degree of each of the 10 dampers 14 by referring to the score table 316, and obtains the air volume of each of the two transport fans 13 by referring to the fan air volume table 317. stipulate.

Specifically, the determination unit 313 obtained the score corresponding to the opening degree of each of the five dampers 14 corresponding to one transport fan 13 from the score table 316, and obtained the average value (average score) of the scores. After that, the air volume of the transport fan 13 is obtained from the fan air volume table 317. It can be said that the average score obtained by the determination unit 313 is an evaluation value corresponding to the average value of the opening degrees of each of the five dampers 14. Since the ratio of the opening degree of the damper 14 to the score in the score table 316 is not constant, the average score does not necessarily correspond to the average value of the opening degree, but the score increases monotonically with respect to the opening degree of the damper 14. Therefore, it can be said that the average score as the evaluation value corresponds to the average value of the opening.

The score in the fan air volume table 317 shown in Table 8 is the average score of the scores of the five dampers 14. In the score table 316 shown in Table 7, the maximum score is 5 points and the minimum score is 1 point. Therefore, the total score of the 5 dampers 14 is 5 points or more and 25 points or less. However, the average score is 1 point or more and 5 points or less. Therefore, the determination unit 313 can determine the air volume of the transfer fan 13 by using the fan air volume table shown in Table 8 regardless of the number of dampers 14 associated with the transfer fan 13. In Table 8, since it is assumed that the number of dampers 14 is changed depending on the scale of the building 20, the average value of the points corresponding to the opening degree of the dampers 14 is used as the evaluation value. However, when the number of dampers 14 is not changed, the evaluation value may be the total of the points corresponding to the opening degree of the dampers 14 (total points). That is, if the number of dampers 14 is not changed, the product of the average score and the number of dampers 14 is the total score, so that the total score can be treated in the same manner as the average score. Further, the evaluation value may be obtained directly from the opening degree of the damper 14 instead of the score corresponding to the opening degree of the damper 14.

In the fan air volume table 317 shown in Table 8, the transport fan 13 can select the air volume from four stages. The number of stages of the air volume of the transport fan 13 is an example for explanation, and is appropriately determined by design and the like. Further, the value of the air volume corresponding to the section divided by the points in Table 8 is also appropriately determined by the design and the like. The type of sum of the air volumes of the two transport fans 13 is calculated by a duplicate combination that allows duplication and selects 2 from 4 when the air volumes of the 2 transport fans 13 are simply combined. Is. On the other hand, if the difference in air volume is constant in two adjacent stages of the fan air volume table 317, there are seven types of sum of the air volumes of the two transport fans 13, and the heat source machine 11 with respect to the air volume of the transport fan 13. It is easy to adjust the air volume of. However, it is not essential to keep the air volume difference between two adjacent stages constant.

The determination unit 313 determines the air volume of the two transport fans 13 based on the opening degree of the ten dampers 14, and then determines the air volume of the heat source machine 11. The air volume of the transfer fan 13 and the air volume of the heat source machine 11 are associated in advance. The set temperature of the heat source machine 11 is set to a temperature lower than the minimum temperature among the target temperatures of the plurality of rooms 23 if the air conditioning system 10 is in the cooling operation, and a plurality of temperatures are set if the air conditioning system 10 is in the heating operation. It is set to a temperature higher than the maximum temperature among the target temperatures of the room 23. For example, in the case of heating operation, the set temperature of the heat source machine 11 is set to a value obtained by adding an appropriate temperature to the maximum temperature among the target temperatures of the plurality of rooms 23. The temperature to be added to the maximum temperature is selected from the range of 1 [° C.] or more and less than 7 [° C.], and is set to 4 [° C.] as an example. In the cooling operation, the same temperature is subtracted from the above-mentioned minimum temperature. When the set temperature of the heat source machine 11 is determined, the amount of heat supplied by the heat source machine 11 per unit time is adjusted by the air volume. The determination unit 313 determines that the air volume of the heat source machine 11 is close to the total of the air volumes of the two transport fans 13.

The control device 30 described above is realized with a device including a processor for executing a program as a main hardware configuration. The device including the processor may be an MPU (Micro Processing Unit) provided with a semiconductor memory separately, or a microcontroller (Micro-Controller) housed in a single package together with the semiconductor memory. It is desirable that the control device 30 includes at least a RAM (Random Access Memory) as a memory, and at least one of a ROM (Read-Only Memory) and an EEPROM (Electrically Erasable Programmable Read-Only Memory).

The program is provided as written in ROM, or may be a recording medium such as an optical recording disk or a recording medium including a flash memory, and may be provided by a computer-readable recording medium. The program may also be provided through a telecommunication line such as the Internet or a mobile communication network. Programs provided by recording media or telecommunication lines are preferably stored in rewritable non-volatile memory (eg EEPROM).

An operation example of the control device 30 when the air conditioning system 10 shown in FIG. 1 is assumed will be collectively described with reference to FIGS. 4 and 5. The air conditioning system 10 includes one heat source machine 11, two transfer fans 13, ten dampers 14, and nine temperature sensors 18 arranged in each of the nine rooms 23. The control device 30 periodically acquires the current temperature from each of the nine temperature sensors 18 at regular time intervals. Further, the following description assumes a case where the air conditioning system 10 is in a cooling operation.

As shown in FIG. 4, the control device 30 determines a control table 314 for controlling the opening degree of the damper 14 according to the temperature difference and the temperature change (S10). As an example, the case where the temperature difference here is the previous temperature difference Δθ (i-1) has been described, but the latest temperature difference Δθ (i) may be used. The control device 30 individually determines the control table 314 for each of the 10 dampers 14. After that, the determination unit 313 of the control device 30 determines the opening degree of the damper 14 according to the temperature difference for each of the 10 dampers 14 by using the control table 314 determined in step S10 (S11). The case where the temperature difference here is the latest temperature difference Δθ (i) has been described as an example, but the previous temperature difference Δθ (i-1) may be used.

Next, in step S12, the determination unit 313 determines the air volume of each of the two transport fans 13 based on the opening degree of each of the five dampers 14 corresponding to the two transport fans 13. When the air volume of each of the two transport fans 13 is determined, the determination unit 313 determines the air volume of the heat source machine 11 (S13). When the opening degree of the 10 dampers 14, the air volume of the two transport fans 13, and the air volume of the heat source machine 11 are determined, the control unit 32 of the control device 30 determines the heat source machine 11, the transfer fan 13, and the damper 14. (S14).

FIG. 5 shows a specific procedure of step S10. That is, when the acquisition unit 310 acquires the current temperature θ1 (i) of the air conditioning region 21 corresponding to one damper 14 (S101), the first calculation unit 311 has the current temperature θ1 (i) and the target temperature of the air conditioning region 21. The temperature difference Δθ (i) from θ2 is calculated (S102). The storage unit 34 stores the latest temperature difference Δθ (i) calculated by the first calculation unit 311 and the previous temperature difference Δθ (i-1). Here, an example will be described in which the latest temperature difference Δθ (i) is used to determine the opening degree of the damper 14, and the previous temperature difference Δθ (i-1) is used to determine the control table 314. The following operation is an example when the air conditioning is insufficient.

In the control device 30, for the air conditioning region 21 corresponding to any of the dampers 14, from the acquisition of the previous current temperature θ1 (i-1) by the acquisition unit 310 to the acquisition of the current current temperature θ1 (i). It is determined whether or not the target temperature θ2 has been changed during the period (S103). When the target temperature θ2 is changed for the air conditioning region 21 corresponding to any of the dampers 14 (S103: Y), the acquisition unit 310 acquires the previous current temperature θ (i-1) for the opening degree of the damper 14. It is determined by using the control table 314 used at that time (S107). That is, the control table 314 is corrected for the air-conditioning region 21 in which the target temperature θ2 has been changed since the time when the current temperature θ1 (i-1) was acquired one time before when the current temperature θ1 (i) was acquired. do not do.

On the other hand, if the target temperature θ2 is not changed for the air-conditioned region 21 corresponding to the damper 14 (S103: N), the second calculation unit 312 causes the temperature change V (i) for the air-conditioned region 21 corresponding to the damper 14. Obtain (S104). The latest temperature difference Δθ (i) stored in the storage unit 34, the temperature difference Δθ (i-1) one time before, and the temperature change V (i) obtained by the second calculation unit 312 are determined. Given to 313. The determination unit 313 evaluates the temperature difference Δθ (i-1) and the temperature change V (i) using the first threshold value TH1 and the second threshold value TH2 (S105). That is, does the determination unit 313 need to correct the control table 314 by comparing the temperature difference Δθ (i-1) with the first threshold value TH1 and the temperature change V (i) with the second threshold value TH2? Evaluate whether or not. When the correction of the control table 314 is necessary (S105: correction is necessary), the corrected control table 314 as shown in Tables 3, 4, 5, and 6 is adopted to determine the opening degree of the damper 14 (S105: correction is necessary). S106). When the correction of the control table 314 is not necessary (S105: correction is not required), the determination unit 313 is the control table used at the time when the acquisition unit 310 acquires the current temperature θ1 (i-1) one time before. The opening degree of the damper 14 is determined by adopting 314 (S107).

The process of step S10 is repeated until the current temperature θ1 (i) is acquired for all the air-conditioned regions 21 (S108). In the air conditioning system 10 described above, since the building 20 has 10 air conditioning regions 21, the processes of steps S101 to S105 are repeated for all the 10 air conditioning regions 21 to determine the 10 control tables 314. ..

As described above, in the air conditioning system 10 shown in FIG. 1, one of the nine rooms 23 has two air conditioning regions 21, and these two air conditioning regions 21 use the temperature sensor 18. It is shared. Therefore, it is possible to use the same control table 314 for two of the ten air-conditioned areas 21. In this case, the number of repetitions of the process from step S101 to step S105 may be 9 times instead of 10.

When the air conditioning system 10 is in the cooling operation, in step S10, the control device 30 selects any one of the plurality of types of control tables 314 as illustrated in Table 1, Table 3, Table 4, Table 5, and Table 6. Select for each of the dampers 14. The same applies when the air conditioning system 10 is in the heating operation, and the control device 30 selects any of a plurality of types of control tables 314 including the control table 314 exemplified in Table 2 for each of the 10 dampers 14. do.

In the operation example shown in FIG. 5, when the target temperature is changed in any of the 10 air-conditioning regions 21, the acquisition unit 310 is once before the control device 30 only in the air-conditioning region 21 where the target temperature is changed. The control table 314 adopted when the current temperature θ (i-1) of the above is acquired is adopted. That is, after the temperature difference Δθ (i) is calculated in each air-conditioned region 21, it is determined whether or not the target temperature has changed in the air-conditioned region 21. In response to this operation, when the target temperature is changed in any of the six air-conditioning regions 21, the control device 30 has the current temperature θ (i) one time before the acquisition unit 310 in all of the six air-conditioning regions 21. The control table 314 adopted when -1) is acquired may be adopted.

In step S11, the determination unit 313 uses the control table 314 for each of the 10 dampers 14 determined in step S10, and the temperature difference Δθ (i) or the temperature difference Δθ (i-1) of each of the 10 air conditioning regions 21. The opening degree of each of the 10 dampers 14 is obtained according to the above. Then, as described above, the determination unit 313 obtains the air volume of the transport fan 13 based on the opening degree of each of the 10 dampers 14, and obtains the air volume of the heat source machine 11 from the air volume of the transport fan 13 in step S13. In this way, the control device 30 first determines the opening degree of each of the 10 dampers 14 based on the current temperature of the air conditioning region 21, then determines the air volume of each of the two transport fans 13, and then determines the air volume of each of the two transport fans 13. The air volume of 11 is determined.

The building 20 is not limited to a detached house, but may be another building such as an apartment house or a store. Although the configuration including the heat pump type heat source machine 11 is exemplified as the air conditioning system 10, the air conditioning system 10 may be configured to pass hot water or cold water through a plurality of fan coil units. Further, when only heating is performed, the air conditioning system 10 may be configured to pass steam or hot water through a radiator. In the air conditioning system 10 described above, a HEPA filter is used as the air filter 12, but it does not prevent the use of an air filter 12 having another configuration. The number of transfer fans 13, the number of dampers 14 and outlets 15, the number of temperature sensors 18, the number of rooms 23, etc. described above are examples and may be appropriately changed. Further, the transfer fan 13 is not an essential configuration of the air conditioning system 10. That is, the air conditioning system 10 may be configured such that the cold air or warm air generated by the heat source machine 11 is blown out from the outlet 15 through the damper 14 without being accelerated.

The opening degree of the damper 14 shown in Tables 1 to 6 is an example, and is appropriately changed according to the specifications of the air conditioning system 10. For example, in Table 1, the value described as 70 [%] is set to an appropriate value in the range of 50 [%] or more and 90 [%] or less, and the value described as 40 [%] is , 30 [%] or more and 60 [%] or less is set to an appropriate value. Further, the value described as 25 [%] is set to an appropriate value in the range of 15 [%] or more and 30 [%] or less. In Table 1, 5 [%] is set to an appropriate value in the range of 5 [%] or more and 10 [%] or less in consideration of the minimum ventilation volume of constant ventilation. When constant ventilation is performed separately from the air conditioning system 10, the minimum value of the opening degree of the damper 14 may be 0 [%]. The range of numerical values described here is also an example, and may be changed as appropriate depending on the design or the like.

Further, in Tables 1 to 6, the minimum unit of the temperature difference section is set to 0.5 [° C], but the minimum unit of the temperature difference section is 0.1 [° C] or more and 1.5 [° C]. It can be appropriately determined in the following range, and it is more desirable if it is in the range of 0.1 [° C.] or more and 1.0 [° C.] or less. The number of sections is not limited to five and can be appropriately determined.

In the air conditioning system 10 described above, the acquisition unit 310 performs wired communication with the temperature sensor 18, but wireless communication may be performed, and even if wired communication and wireless communication are mixed in the building 20. good. There are no particular restrictions on the communication rules between the acquisition unit 310 and the temperature sensor 18. Further, in the air conditioning system 10 described above, the acquisition unit 310 inquires about the current temperature of each of the plurality of temperature sensors 18, but the plurality of temperature sensors 18 transmit the current temperature to the acquisition unit 310 at an appropriate timing. There may be.

In the above-mentioned air conditioning system 10, the degree of difference between the current temperature θ1 (i) and the target temperature θ2 is represented by the temperature difference Δθ (i), and the control device 30 has a damper based on the temperature difference Δθ (i). The opening degree of 14 is determined. The degree of difference between the current temperature θ1 (i) and the target temperature θ2 may be expressed by the ratio of the current temperature θ1 (i) to the target temperature θ2.

If cold air or warm air can be sent from the heat source machine 11 to the outlet 15 without providing the transfer fan 13 between the heat source machine 11 and the damper 14, the transfer fan 13 can be omitted. In this case, it is desirable to determine the air volume of the heat source machine 11 by using an evaluation value corresponding to the average value of the openings of the ten dampers 14. Similar to the fan air volume table 317 for determining the air volume of the conveyor fan 13, when the control device 30 determines the air volume of the heat source machine 11 from the opening degree of the damper 14, the control device 30 associates the air volume of the heat source machine 11 with the average value of the points. A heat source machine air volume table 318 (shown by a broken line in FIG. 2) as shown in Table 9 is used. Even when the air volume of the heat source machine 11 is determined using the heat source machine air volume table 318, the opening degree of the damper 14 is replaced with a score by the score table 316. The control device 30 may include one of the fan air volume table 317 and the heat source machine air volume table 318.

In the air conditioning system 10 described above, the control device 30 determines the air volume of the transfer fan 13 using an average point corresponding to the average value of the openings of the five dampers 14 corresponding to one transfer fan 13 as an evaluation value. However, other evaluation values may be used. For example, the evaluation value may be the average value of the openings of the five dampers 14, or may be the average value of the above-mentioned deficiencies.

The control device 30 for the air conditioning system described above includes a processing unit 31 and a control unit 32. The processing unit 31 determines the amount of heat supplied per unit time from the heat source machine 11 that generates cold air or warm air to each of the plurality of air-conditioned areas 21 of the building 20. The control unit 32 controls a distribution device 102 that distributes the cold air or warm air generated by the heat source machine 11 to the plurality of air conditioning regions 21. The distribution device 102 includes an air supply duct 16 and a damper 14. The air supply duct 16 is branched into a plurality of systems so as to distribute the cold air or the warm air from the heat source unit 11 to each of the plurality of air conditioning regions 21. The damper 14 adjusts the flow rate of cold air or warm air blown out from each of the plurality of systems of the air supply duct 16 to the plurality of air conditioning regions 21. The processing unit 31 has at least two functions as follows. The first function is a function of determining the opening degree of each of the plurality of dampers 14 according to the amount of heat supplied to each of the plurality of air conditioning regions 21 per unit time. The second function is a function of determining the air volume of cold air or warm air supplied by the heat source machine 11 with respect to the evaluation value corresponding to the average value of the opening degree of each of the plurality of dampers 14.

The control device 30 for the air conditioning system determines the amount of cold air or warm air supplied by the heat source machine 11 based on the opening degree of the plurality of dampers 14 that determine the amount of heat supplied to each of the plurality of air conditioning regions 21 per unit time. It is a composition. Since the control device 30 determines the amount of cold air or warm air supplied by the heat source machine 11 with respect to the evaluation value corresponding to the average value of the openings of the plurality of dampers 14, the range in which the evaluation value can be taken is the damper 14. Regardless of the number, it is limited by the adjustment range of the opening degree of the damper 14. Therefore, the adjustment range of the air volume of the heat source machine 11 does not change depending on the number of dampers 14, and the air volume of the heat source machine 11 can be used in the full range from the minimum value to the maximum value.

Assuming that the air volume of the heat source machine 11 is associated with the total opening degree of the damper 14, the adjustment range of the air volume of the heat source machine 11 changes depending on the number of dampers 14, and the number of air conditioning regions 21 is small. There is a possibility that the air volume of the heat source machine 11 will be relatively small. On the other hand, since the air volume of the heat source machine 11 is determined by an evaluation value corresponding to the average value of the opening degree of the damper 14, the air volume of the heat source machine 11 can be used in the full range even when the number of the air conditioning regions 21 is small.

The processing unit 31 is configured to determine the opening degree of the damper 14 based on the degree of difference between the current temperature θ1 (i) acquired at predetermined time intervals and the target temperature θ2 for each of the plurality of air conditioning regions 21. Is desirable.

That is, the amount of heat supplied to the air-conditioned region 21 per unit time is adjusted according to the degree of difference in the current temperature θ1 (i) with respect to the target temperature θ2, and cold air or warm air is distributed according to the amount of heat required by the air-conditioned region 21. To.

Further, it is desirable that the processing unit 31 includes a control table 314, a score table 316, a heat source machine air volume table 318, and a determination unit 313. In the control table 314, the opening degree of the damper 14 is associated with each of the plurality of sections in which the degree of difference between the current temperature θ1 (i) and the target temperature θ2 is divided. In the score table 316, the score is associated with the opening degree of the damper 14. In the heat source machine air volume table 318, the air volume of cold air or warm air supplied by the heat source machine 11 is associated with each of the plurality of sections in which the points are divided. When the current temperature θ1 (i) is acquired, the determination unit 313 obtains the opening degree of each of the plurality of dampers 14 based on the control table 314, and then the opening degree of each of the plurality of dampers 14 based on the score table 316. Find the score corresponding to. Further, the determination unit 313 determines the air volume of the heat source machine 11 based on the heat source machine air volume table 318, using the average value of the obtained points as an evaluation value.

That is, after the determination unit 313 determines the opening degree of the damper 14 from the current temperature θ1 (i), the air volume of the heat source machine 11 is determined using the average value of the points corresponding to the opening degree of each of the plurality of dampers 14 as the evaluation value. Therefore, the air volume of the heat source machine 11 is determined without requiring complicated calculation.

The distribution device 102 may further include a transfer fan 13 that sends cold air or warm air supplied by the heat source machine 11 to the plurality of dampers 14. In this case, it is desirable that the processing unit 31 is configured to determine the air volume of the cold air or the warm air supplied by the heat source machine 11 after determining the air volume of the transport fan 13 with respect to the evaluation value.

That is, since the transfer fan 13 accelerates the cold air or warm air from the heat source machine 11, the amount of heat can be adjusted even in the air conditioning region 21 away from the heat source machine 11. Further, since the amount of heat supplied to the air conditioning region 21 per unit time is adjusted by the transport fan 13 and the damper 14, it is possible to improve the accuracy of the amount of heat supplied per unit time for each air conditioning region 21. Further, the determination unit 313 determines the opening degree of the damper 14, then determines the air volume of the transfer fan 13, and further determines the air volume of the heat source machine 11 based on the air volume of the transfer fan 13. Therefore, the control device 30 controls the transfer fan 13 and the heat source machine 11 according to the amount of heat supplied to the air conditioning region 21, and the waste of energy for operating the transfer fan 13 and the heat source machine 11 is reduced. In this case, the air volume of the heat source machine 11 with respect to the opening degree of the plurality of dampers 14 is indirectly determined after the air volume of the conveyor fan 13 is determined.

When there are a plurality of transport fans 13, it is desirable that the air supply duct 16 includes a plurality of branch ducts 161 and a plurality of end ducts 162. A plurality of transfer fans 13 are arranged in the branch duct 161. The terminal duct 162 is further branched from each of the plurality of branch ducts 161 into a plurality of systems, and a plurality of dampers 14 are arranged respectively. In this case, the processing unit 31 determines the opening degree of the damper 14 arranged in each of the plurality of end ducts 162, and then determines the air volume of the transport fan 13 for each of the plurality of branch ducts 161 based on the opening degree of the damper 14. It is desirable that it is configured to determine.

That is, since a plurality of dampers 14 correspond to one transport fan 13 and the air volume of the transport fan 13 is adjusted based on the opening degree of each of the plurality of dampers 14, the number of air conditioning regions 21 is increased. The number of transfer fans 13 can be reduced. As a result, the number of transfer fans 13 installed in the building 20 can be reduced, and the equipment introduction cost can be suppressed.

It is desirable that the processing unit 31 includes a control table 314, a score table 316, a fan air volume table 317, and a determination unit 313. In the control table 314, the opening degree of the damper 14 is associated with each of the plurality of sections in which the degree of difference between the current temperature θ1 (i) and the target temperature θ2 is divided. In the score table 316, the score is associated with the opening degree of the damper 14. In the fan air volume table 317, the air volume of the conveyor fan 13 is associated with each of the plurality of sections in which the points are divided. When the current temperature θ1 (i) is acquired, the determination unit 313 obtains the opening degree of each of the plurality of dampers 14 based on the control table 314, and then the opening degree of each of the plurality of dampers 14 based on the score table 316. Find the score corresponding to. Further, the determination unit 313 determines the air volume of the conveyor fan 13 based on the fan air volume table 317, using the average value of the obtained points as an evaluation value.

That is, after the determination unit 313 determines the opening degree of the damper 14 from the current temperature θ1 (i), the air volume of the transport fan 13 is determined using the average value of the points corresponding to the opening degree of each of the plurality of dampers 14 as the evaluation value. Therefore, the air volume of the transport fan 13 is determined without requiring complicated calculation.

Further, the above-mentioned air conditioning system 10 includes a heat source machine 11, a distribution device 102, a plurality of temperature sensors 18, and a control device 30. The heat source machine 11 generates cold air or warm air to be supplied to the building 20. The distribution device 102 distributes the cold air or warm air generated by the heat source unit 11 to a plurality of air-conditioned regions 21 in the building 20. The plurality of temperature sensors 18 measure the temperature of each of the plurality of air conditioning regions 21. The control device 30 is configured to acquire the temperature measured by the plurality of temperature sensors 18 as the current temperature θ1 (i).

That is, in this air conditioning system 10, the control device 30 acquires the current temperature θ1 (i) from the temperature sensor 18 that measures the temperature of the air conditioning region 21, and applies thermal energy to the air conditioning region 21 based on the current temperature θ1 (i). Allocate.

The embodiments described above are only a part of various embodiments of the present invention. Further, the above-described embodiment can be variously modified according to the design and the like as long as the object of the present invention can be achieved.

10 Air conditioning system 11 Heat source machine 13 Conveying fan 14 Damper 16 Air supply duct 18 Temperature sensor 20 Building 21 Air conditioning area 30 Control device 31 Processing unit 32 Control unit 102 Distribution device 161 Branch duct 162 Terminal duct 313 Determining unit 314 Control table 316 Point table 317 Fan air volume table 318 Heat source machine air volume table θ1 (i) Current temperature θ2 Target temperature

Claims (6)

A processing unit that determines the amount of heat supplied per unit time from a heat source machine that generates cold or warm air to each of multiple air-conditioned areas of the building.
A control unit for controlling a distribution device that distributes the cold air or the warm air generated by the heat source machine to the plurality of air-conditioned regions is provided.
The distribution device is
An air supply duct branched into a plurality of systems so as to distribute the cold air or the warm air from the heat source machine to each of the plurality of air conditioning regions, and
It is provided with a plurality of dampers for adjusting the flow rate of the cold air or the warm air blown out from each of the plurality of systems of the air supply duct to the plurality of air conditioning regions.
The processing unit
A function of determining the opening degree of each of the plurality of dampers according to the amount of heat supplied to each of the plurality of air conditioning regions per unit time.
A function of determining the air volume of the cold air or the warm air supplied by the heat source machine with respect to an evaluation value corresponding to the average value of the opening degrees of each of the plurality of dampers.
Satisfaction or deficiency of air conditioning is evaluated from the temperature difference between the current temperature and the target temperature, and the amount of heat supplied to the plurality of air conditioning regions per unit time is too small or insufficient from the temperature change with respect to the time of the current temperature. It has a function of performing excessive evaluation and correcting the opening degree of each of the plurality of dampers.
The processing unit
For each of the plurality of air-conditioning regions, the opening degree of the damper is determined based on the degree of difference between the current temperature and the target temperature acquired at predetermined time intervals.
The processing unit
A control table in which the opening degree of the damper is associated with each of a plurality of sections in which the degree of difference between the current temperature and the target temperature is divided.
A score table in which points are associated with the opening of the damper,
An air volume table in which the air volumes of the cold air or the warm air supplied by the heat source machine are associated with each of the plurality of sections in which the points are divided.
When the current temperature is acquired, the opening degree of each of the plurality of dampers is obtained based on the control table, and then the points corresponding to the opening degree of each of the plurality of dampers are obtained and obtained based on the score table. A control device for an air conditioning system, comprising: a determination unit for determining the air volume of the heat source machine based on the air volume table, with the average value of the points as the evaluation value . The distribution device is
Further, a transport fan for sending the cold air or the warm air supplied by the heat source machine to the plurality of dampers is provided.
The processing unit
The control device for an air conditioning system according to claim 1, which is configured to determine the air volume of the cold air or the warm air supplied by the heat source machine after determining the air volume of the transport fan with respect to the evaluation value. .. There are multiple transfer fans,
The air supply duct
A plurality of branch ducts for passing the cold air or the warm air from each of the plurality of transport fans, and the plurality of branch ducts.
It is provided with a plurality of terminal ducts that branch from each of the plurality of branch ducts into a plurality of systems and in which the plurality of dampers are arranged.
The processing unit
After determining the opening degree of the damper arranged in each of the plurality of terminal ducts, the air volume of the transport fan is determined for each of the plurality of branch ducts based on the opening degree of the damper. The control device for the air conditioning system according to claim 2. The processing unit
The air conditioning system according to claim 2 or 3, wherein the opening degree of the damper is determined based on the degree of difference between the current temperature and the target temperature acquired at predetermined time intervals for each of the plurality of air conditioning regions. Control device. The processing unit
A fan air volume table in which the air volume of the conveyor fan is associated with each of the plurality of sections in which the points are divided is provided.
When the current temperature is acquired, the determination unit obtains the opening degree of each of the plurality of dampers based on the control table, and then corresponds to the opening degree of each of the plurality of dampers based on the score table. The control device for an air conditioning system according to claim 4, wherein the points are obtained, and the average value of the obtained points is used as the evaluation value to determine the air volume of the conveyor fan based on the fan air volume table. With the heat source machine
With the distribution device
A plurality of temperature sensors that measure the temperature of each of the plurality of air conditioning regions, and
The control device for the air conditioning system according to any one of claims 1, 4 and 5 is provided.
The control device for the air conditioning system is characterized in that it is configured to acquire the temperature measured by the plurality of temperature sensors as the current temperature.

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