JP2016099092A - Air conditioning system, control device for air conditioner and control method for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of satisfying both securing comfort and suppressing power consumption, a control device for an air conditioner and a control method for an air conditioner for controlling a plurality of air conditioners.SOLUTION: In an air conditioning system 1, a control device 5 includes: a total electric power calculation unit 55 which calculates a total electric power amount in which electric power amounts consumed by first and second air conditioners 21, 22 respectively are acquired and each of the electric power amounts is added up, by using a temperature detection result and thermal load distribution ratio information of a temperature sensor group 4, for each combination of setting temperature included in each operation condition, on the basis of the operation condition including the setting temperature determined according to virtually divided space characteristics the first and second air conditioners 21, 22 correspond to; and an air conditioner control unit 57 for controlling the first and second air conditioners 21, 22 respectively by the combination of setting temperatures which becomes the minimum electric power amount out of the total electric power amounts.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioner system, an air conditioner control device, and an air conditioner control method.

  In stores such as supermarkets and convenience stores, temperature control using an air conditioner is performed. In addition, the store has various heat sources such as a hot / cold heat source such as a refrigerated freezer showcase, heat from solar radiation, and outside air heat by people coming and going, which is a load on the air conditioner. In order to efficiently operate the power consumption of the entire store, for example, a refrigerated refrigerating and air-conditioning apparatus that performs centralized control in cooperation with one air conditioner installed in a store and a plurality of refrigerated freezer showcases. It has been proposed (see, for example, Patent Document 1). This refrigerated refrigeration air conditioner ensures comfort, and the refrigerated showcase and air-conditioning load are designed to achieve an ideal ratio that can reduce the power consumption. The machine operation is controlled.

JP 2013-130377 A

  By the way, generally, a store such as a supermarket or a convenience store often has a plurality of air conditioners. Conventionally, even when a plurality of air conditioners are installed in this manner, all air conditioners are uniformly controlled under the same conditions. However, hot and cold heat sources such as refrigerated freezer showcases are not always evenly arranged in the store, and in consideration of intrusion of heat by sunlight and outside air heat by people coming and going, it is related to each air conditioner In most cases, the heat loads are different from each other. Furthermore, in the store, whether or not comfort is required depends on the location. For this reason, in the conventional method of uniformly controlling a plurality of air conditioners under the same conditions, it has been impossible to satisfy both of ensuring comfort and suppressing power consumption.

  The present invention has been made in view of the above, and is an air conditioning system that can satisfy both of ensuring comfort and suppressing power consumption, and control of an air conditioner that controls a plurality of air conditioners. An object of the present invention is to provide an apparatus and a control method for an air conditioner.

  In order to solve the above-described problems and achieve the object, an air conditioning system according to the present invention is an air conditioning system that performs temperature control of one closed space, and is provided for the one closed space. A plurality of air conditioners and a plurality of temperatures installed at least one in each of the plurality of divided spaces obtained by virtually dividing the one closed space in correspondence with each of the plurality of air conditioners. A sensor, a temperature detection result by the plurality of temperature sensors, and a distribution ratio in which thermal loads due to a plurality of thermal elements related to the one closed space are respectively distributed to the plurality of divided spaces, As a result of obtaining for each air conditioner the amount of power consumed by the air conditioner based on operating conditions including a set temperature determined according to the characteristics of the divided space to which the air conditioner corresponds. Flip it, characterized in that the total amount of power the plurality of air conditioners is consumed and a control unit for controlling each of the plurality of air conditioners so as to have a minimum.

  In addition, the air conditioner control device according to the present invention controls an air conditioner that controls a plurality of air conditioners provided for the one closed space for temperature control of the one closed space. Temperature detection by a plurality of temperature sensors, each of which is installed in each of a plurality of divided spaces obtained by virtually dividing the one closed space in correspondence with each of the plurality of air conditioners. Using the result and a distribution ratio in which thermal loads due to a plurality of thermal elements related to the one closed space are respectively distributed to the plurality of divided spaces, the divided spaces corresponding to the respective air conditioners The total amount consumed by the plurality of air conditioners according to the result of calculating for each air conditioner the amount of power consumed by the air conditioner based on the operating conditions including the set temperature determined according to the characteristics of Electric Amount and wherein the plurality of air conditioners to be controlled respectively so as to minimize.

  An air conditioner control device according to the present invention includes an operating condition storage unit that stores operating conditions of each air conditioner, and a thermal load distribution that indicates the distribution ratio for each of the plurality of thermal elements. Based on the operating conditions of each air conditioner stored in the operating condition storage unit and the heat load information storing unit storing the ratio information, the plurality of temperatures for each combination of set temperatures included in each operating condition Using the temperature detection result by the sensor and the thermal load distribution ratio information stored in the thermal load information storage unit, the amount of electric power consumed by the air conditioner is obtained for each air conditioner, and each obtained electric energy The total power amount calculation unit that calculates the total power amount calculated by summing the total power amount, and the combination of the set temperature that is the smallest total power amount among the total power amounts calculated by the total power amount calculation unit is extracted and extracted. Setting An air conditioner control unit that controls each of the plurality of air conditioners in combination of temperature, further comprising a characterized.

  In the control device for an air conditioner according to the present invention, the plurality of thermal elements include at least each air conditioner, a heating / cooling heat source in the one closed space, solar heat, and the one It is characterized by outside air heat that has entered into a closed space.

  Further, in the control device for an air conditioner according to the present invention, the total electric energy calculation unit obtains a thermal load of each thermal element, and the obtained thermal load of the thermal element is determined by the thermal load distribution ratio information. It distributes to each divided space at the indicated ratio, and calculates the amount of power consumed by the air conditioner for each air conditioner based on the thermal load and the set temperature respectively distributed to each divided space. It is characterized by that.

  In addition, the air conditioner control method according to the present invention includes an air performed by a control device that controls a plurality of air conditioners provided for the one closed space for temperature control of the one closed space. A method for controlling a conditioner, wherein the temperature is detected by a plurality of temperature sensors installed at least one in each of a plurality of divided spaces obtained by virtually dividing the one closed space corresponding to each air conditioner. Combination of temperature detection result acquisition process for acquiring results and set temperature included in each operation condition based on operation condition including set temperature determined according to the characteristics of the divided space to which each air conditioner corresponds And a distribution ratio in which thermal loads due to a plurality of thermal elements related to the one closed space are distributed to the plurality of divided spaces, for each of the plurality of thermal elements. Thermal load distribution ratio information acquisition processing for acquiring the indicated thermal load distribution ratio information, temperature detection results acquired in the temperature detection result acquisition processing, and thermal load distribution acquired in the thermal load distribution ratio information acquisition processing Using the ratio information, for each combination of the set temperatures acquired in the temperature combination acquisition process, the amount of power consumed by the air conditioner is obtained for each air conditioner, and the obtained amounts of power are totaled. A total power amount calculation process for calculating the total power amount, and a combination of the set temperature that is the smallest total power amount among the total power amounts calculated in the total power amount calculation process, and the combination of the extracted temperatures And an air conditioner control process for controlling each of the plurality of air conditioners.

  According to the present invention, a temperature detection result by a plurality of temperature sensors installed at least one in each of a plurality of divided spaces obtained by virtually dividing one closed space corresponding to each of the plurality of air conditioners. And a distribution ratio in which thermal loads due to a plurality of thermal elements related to one closed space are distributed to the plurality of divided spaces, respectively, according to the characteristics of the divided spaces to which each air conditioner corresponds. The total power consumed by multiple air conditioners is minimized according to the result of calculating the amount of power consumed by the air conditioner for each air conditioner based on the operating conditions including the set temperature. Since each of the plurality of air conditioners is controlled, both of ensuring comfort and suppressing power consumption can be satisfied.

FIG. 1 is a block diagram showing an example of a configuration of an air conditioning system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of an internal configuration of a store that is an air conditioning target of the air conditioning system illustrated in FIG. 1. FIG. 3 is a flowchart showing a processing procedure of the air conditioner control method performed by the control device shown in FIG. 1. FIG. 4 is a diagram illustrating a table illustrating combinations of set temperatures of the first air conditioner and the second air conditioner illustrated in FIG. 1. FIG. 5 is a diagram illustrating an example of heat load distribution ratio information stored in the heat load information storage unit illustrated in FIG. 1. FIG. 6 is a diagram illustrating an example of the relationship between the heat load of the air conditioner and the showcase illustrated in FIG. 1 and the space setting temperature. FIG. 7 is a diagram illustrating an example of the relationship between the heat load of the air conditioner and the showcase illustrated in FIG. 1 and the space setting temperature. FIG. 8 is a diagram illustrating an example of a calculation result of the total power amount calculation unit illustrated in FIG. 1.

  Hereinafter, an air conditioning system in which a plurality of air conditioners are provided in one closed space will be described as an example of an embodiment according to the present invention. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same parts are denoted by the same reference numerals.

(Embodiment)
In the air conditioning system according to the present embodiment, a plurality of at least one installed in each of a plurality of divided spaces obtained by virtually dividing one closed space in correspondence with each of the plurality of air conditioners. Using the temperature detection result by the temperature sensor and the distribution ratio in which the thermal load due to the plurality of thermal elements related to one closed space is distributed to the plurality of divided spaces, the respective air conditioners correspond to Total energy consumed by multiple air conditioners according to the result of calculating for each air conditioner the amount of power consumed by the air conditioner based on the operating conditions including the set temperature determined according to the characteristics of the space Each of the plurality of air conditioners is controlled so as to minimize. In the present embodiment, an internal space of one store will be described as an example of one closed space.

  FIG. 1 is a block diagram showing an example of a configuration of an air conditioning system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example of an internal configuration of a store in which the air conditioning system according to the present embodiment is installed.

  As shown in FIG. 1 and FIG. 2, an air conditioner system 1 according to the embodiment includes an air conditioner group 2, a showcase group 3, a temperature sensor group 4, and the like provided in the interior space of a store S. And a control device 5 that controls the operation of the air conditioner group 2 and the showcase group 3.

  The air conditioner group 2 includes, for example, a first air conditioner 21 and a second air conditioner 22 provided on the ceiling of the store S or the like. As illustrated in FIG. 2, the first air conditioner 21 is provided on the ceiling between the entrance / exit E of the store S and the register counter, and the second air conditioner 22 is a fourth to be described later in the back of the store S. It is provided on the ceiling in front of the showcase 34.

  The showcase group 3 is a refrigerated refrigerator, and includes a first showcase 31 to a fourth showcase 34 arranged side by side on the wall surface behind the store S as illustrated in FIG.

  In the air conditioning system 1, the interior space of the store S is virtually divided corresponding to each of the plurality of air conditioners, and optimal control is performed for each air conditioner corresponding to the characteristics of the divided spaces. The maximum amount of power is also reduced. In the example of FIG. 2, the first air conditioner 21 is arranged in one divided space A1 of the divided space obtained by virtually dividing the internal space of the store S, and the second air conditioner 22 is arranged in the other divided space A2. Placed in. The division method is determined according to the layout of a plurality of air conditioners, showcases, windows, doorways, register counters, and the like. The divided space A1 corresponds to the first air conditioner 21, and the divided space A2 corresponds to the second air conditioner 22.

  The temperature sensor group 4 includes at least a first temperature sensor 41, a second temperature sensor 42, and an outdoor temperature sensor 43. At least one of the first temperature sensor 41, the second temperature sensor 42, and the outdoor temperature sensor 43 is installed in different areas. The first temperature sensor 41 is provided, for example, around the first air conditioner 21 in the divided space A1 shown in FIG. 2 and detects the temperature of the installed surroundings. The second temperature sensor 42 is provided, for example, around the second air conditioner 22 in the divided space A2 and detects the temperature of the installed surroundings. The outdoor temperature sensor 43 is provided outside the window W2 of the store S, for example, and detects the outside air temperature of the store S. Each temperature sensor outputs each detected temperature result to the control device 5. Each temperature sensor may periodically detect temperature, or may perform temperature detection when a temperature detection instruction is issued from the control device 5.

  The control device 5 is connected to each air conditioner of the air conditioner group 2, each showcase of the showcase group 3, and each temperature sensor of the temperature sensor group 4, and each air conditioner and showcase of the air conditioner group 2. Control the operation of each group 3 showcase. The control device 5 includes an input unit 51, an output unit 52, an operation condition storage unit 53, a thermal load information storage unit 54, a total power amount calculation unit 55, and a control unit 56.

  The input unit 51 includes input devices such as a keyboard, various buttons, and various switches, and pointing devices such as a mouse and a touch panel, and an instruction signal related to air conditioning control according to the operation of the administrator of the air conditioning system 1 for these devices. Is input to the control unit 56.

  The output unit 52 includes a display, a printer, and the like, and outputs information related to air conditioning control of the air conditioning system 1.

  The operating condition storage unit 53 stores the operating conditions of the first air conditioner 21 and the second air conditioner 22, respectively. The operating conditions of the first air conditioner 21 and the second air conditioner 22 are determined in advance according to the characteristics of the divided space A1 and the divided space A2 to which the first air conditioner 21 and the second air conditioner 22 correspond. Yes. The operating conditions include temperature and humidity as parameters. As the driving conditions, comfort priority driving conditions and energy saving priority conditions are set according to the combination of parameters.

  In the comfort priority driving conditions, parameters are set so as to give priority to comfort. As the comfort priority operation condition, for example, the temperature range during cooling and heating is set to 22 ° C. or higher and 26 ° C. or lower. In the energy saving priority operation condition, a parameter is set so that energy saving is prioritized. The energy-saving priority operation condition is that the temperature range during cooling is set to 24 ° C. or higher and 28 ° C. or lower, and the temperature range during heating is set to 20 ° C. or higher and 24 ° C. or lower. The operating conditions of the first air conditioner 21 and the second air conditioner 22 are schedule-managed according to the number of visitors, outside air temperature, season, time zone, and the like. The divided space A1 corresponding to the first air conditioner 21 includes a cash register counter, and there are many employees and customers waiting for check-in, so there are many times when comfort priority operation conditions are set. On the other hand, the divided space A2 corresponding to the second air conditioner 22 has less time for people to stay than the divided space A1, and therefore there are many time zones in which energy saving priority conditions are set. These operating conditions and set temperature ranges are stored in the operating condition storage unit 53 by being input in advance via the input unit 51 or the like. Further, it may be stored in the operating condition storage unit 53 by being input from an external device via a dedicated network line (not shown). The set temperature range is predetermined for each operating condition, but can be changed via the input unit 51 or the like.

  The thermal load information storage unit 54 indicates a distribution ratio in which the thermal loads due to the plurality of thermal elements related to the internal space of the store S are respectively distributed to the plurality of divided spaces for each of the plurality of thermal elements. Store distribution ratio information. In the example shown in FIG. 2, as a plurality of thermal elements, at least a first air conditioner 21 and a second air conditioner 22 that are hot / cold heat sources in the internal space of the store S, leakage cold air (see arrows Y31 to 34). ) In addition to the first to fourth showcases 31 to 34, solar heat through the windows W1 and W2 (see arrows Y11 and Y12), and outside air heat that has entered the store S through the doorway E. (See arrow Y21) and person H are included. The thermal load distribution ratio of each thermal element with respect to the divided spaces A1 and A2 is obtained in advance and stored in the thermal load information storage unit 54. In addition, the distribution ratio of the heat load of each element is appropriately changed according to the change in the arrangement of the heating / cooling heat source such as the air conditioner and the showcase of the store S, the change in the model, the change in the arrangement of the windows and the entrances and the like.

  The total electric energy calculation unit 55 acquires the operation condition of each air conditioner in the control target period from the operation conditions stored in the operation condition storage unit 53. The total electric energy calculation part 55 acquires the combination of each preset temperature contained in each operation condition based on the acquired operation condition of each air conditioner. A total electric energy calculating part calculates | requires the electric energy which the 1st air conditioner 21 and the 2nd air conditioner 22 consume for every combination of the acquired set temperature for every air conditioner. And the total electric energy calculating part 55 calculates the total electric energy which totaled each calculated | required electric energy for every combination of preset temperature, respectively. The total electric energy calculation unit 55 uses at least the temperature detection result by each temperature sensor of the temperature sensor group 4 and the thermal load distribution ratio information stored in the thermal load information storage unit 54, and uses the first air conditioner 21 and Each electric energy of the 2nd air conditioner 22 is calculated | required.

  The control unit 56 executes various programs and parameters stored in a memory (not shown) and controls each process and each operation of each component of the control device 5. The control unit 56 performs input / output control on data input / output to / from each component of the control device 5 and causes each component to perform predetermined processing on the data. The control unit 56 includes an air conditioner control unit 57. The air conditioner control unit 57 extracts the set temperature combination that is the smallest total power amount among the total power amounts calculated by the total power amount calculation unit 55, and the first air conditioner is combined with the extracted set temperature combination. The machine 21 and the second air conditioner 22 are controlled.

  FIG. 3 is a flowchart showing a processing procedure of an air conditioner control method performed by the control device 5 shown in FIG. 1. As shown in FIG. 3, in the control device 5, the control unit 56 performs a temperature detection result acquisition process for acquiring a temperature detection result by each temperature sensor of the temperature sensor group 4 (step S <b> 1). The controller 56 detects the temperature detection result of the outside temperature outside the store S by the outdoor temperature sensor 43 together with the temperature detection result of the division space A1 by the first temperature sensor 41 and the temperature detection result of the division space A2 by the second temperature sensor 42. To get. Each temperature detection result acquired by the control unit 56 is output to the total power amount calculation unit 55.

  The total electric energy calculation unit 55 acquires the operation conditions of the first air conditioner 21 and the second air conditioner 22 in the control target period from the operation conditions stored in the operation condition storage unit 53, and acquires the acquired operation. A temperature combination acquisition process for acquiring combinations of all the set temperatures included in the conditions is performed (step S2).

  FIG. 4 is a diagram illustrating a table illustrating combinations of set temperatures of the first air conditioner 21 and the second air conditioner 22 that are targets for calculating the total electric energy. For example, the first air conditioner 21 is determined in the comfort priority operation condition, and in the combination table T in FIG. 4, the set temperature is determined in the range of 22 ° C. or more and 26 ° C. or less as described above. The second air conditioner 22 is determined in the energy saving priority operation condition, and as described above, the set temperature is determined in the range of 24 ° C. or more and 28 ° C. or less. Accordingly, there are 25 combinations of set temperatures of the first air conditioner 21 and the second air conditioner 22 as shown in the cells C1 to C25 included in the cell group R. For example, the cell C1 corresponds to a combination in which the set temperature of the first air conditioner 21 is 22 ° C. and the set temperature of the second air conditioner 22 is 24 ° C. The cell C2 corresponds to a combination in which the set temperature of the first air conditioner 21 is 23 ° C. and the set temperature of the second air conditioner 22 is 24 ° C. The total electric energy calculation part 55 performs the process of step S4-step S7 demonstrated below for every combination of 25 setting temperature shown to this cell C1-C25, and calculates the electric energy which an air conditioner consumes. Obtained for each air conditioner, the total amount of power obtained by summing the obtained amounts of power is sequentially put into the corresponding cells.

  The total electric energy calculation unit 55 selects the first temperature combination that is the calculation target of the total electric energy among the combinations of the set temperatures obtained in step S2 (step S3). For example, the total electric energy calculation unit 55 selects the set temperature combination corresponding to the cell C1 in the combination table T of FIG. 4 as the first calculation target.

  The total electric energy calculation unit 55 refers to the operation condition storage unit 53, and determines the distribution ratio at which the thermal loads due to the plurality of elements related to the internal space of the store S are distributed to the divided spaces A1 and A2, respectively. Thermal load distribution ratio information acquisition processing is performed to acquire the thermal load distribution ratio information shown for each element (step S4).

  FIG. 5 is a diagram illustrating an example of thermal load distribution ratio information stored in the thermal load information storage unit 54. The thermal load distribution ratio table D shown in FIG. 5 is a list showing the ratios in which the thermal loads of the thermal elements related to the store S in FIG. 2 are distributed to the divided spaces A1 and A2, respectively. In the heat load distribution ratio table D, the first air conditioner 21, the second air conditioner 22, the first to fourth showcases 31 to 34, the amount of solar heat entering from the windows W1 and W2, the amount of outside air heat entering from the doorway E. For human heat and the like, the maximum load and the distribution ratio of the thermal load distributed to each of the divided spaces A1 and A2 are associated with each other.

  The total electric energy calculation unit 55 calculates the heat load of each air conditioner in the combination of set temperatures to be calculated (step S5). The total electric energy calculation unit 55 uses at least the temperature detection result acquired in the temperature detection result acquisition process and the heat load distribution ratio information acquired in the heat load distribution ratio acquisition process, and the first air conditioner 21 and the first air conditioner 21. 2 Calculate the total heat load consumed by the air conditioner 22.

  The processing content of step S5 will be described. In the first embodiment, the relationship between the initial value of the heat load and the space setting temperature in the first air conditioner 21 and the second air conditioner 22 according to each outside air temperature, each room temperature, the size of the space, and the like. The relationship between the initial value of the thermal load and the space setting temperature is obtained in advance. Moreover, also about the 1st-4th showcases 31-34, according to each outside temperature, each room temperature, the size of space, etc. for every showcase, the relationship between the initial value of a thermal load and the set temperature in a store | warehouse | chamber is shown. It is requested in advance. Each of these relationships is stored in, for example, the thermal load information storage unit 54.

  FIG. 6 is a diagram showing the relationship between the initial value of the thermal load of the first air conditioner 21 corresponding to the outside air temperature and room temperature acquired in step S1 and the space set temperature. FIG. 6 corresponds to that during cooling, and a curve L1 indicates the relationship between the initial value of the heat load of the first air conditioner 21 and the space setting temperature. For example, the case where the total heat load of the first air conditioner 21 is determined in association with the combination of the set temperatures of the cell C1 (see FIG. 4) will be described as an example. In this case, the total electric energy calculation unit 55 obtains the thermal load a1 corresponding to the space setting temperature 22 ° C. as the initial value of the thermal load of the first air conditioner 21, as indicated by an arrow Y41. The total power calculation unit 55 distributes 70% of the obtained heat load a1 to the divided space A1 according to the distribution ratio of the first air conditioner 21 during cooling in the heat load distribution table D (see FIG. 5). 30% of the heat load a1 is distributed to the divided space A2.

  Subsequently, the total electric energy calculation unit 55 refers to the relationship between the initial value of the thermal load of the second air conditioner 22 corresponding to the outside air temperature and room temperature acquired in step S1 and the space setting temperature, and sets the cell C1. Corresponding to the combination of temperatures, the initial value of the heat load of the second air conditioner 22 when the space setting temperature is 24 ° C. is obtained. The total electric energy calculation unit 55 divides 20% of the obtained initial value of the heat load of the second air conditioner 22 according to the distribution ratio of the second air conditioner 22 during cooling in the heat load distribution table D into the divided space. It distributes to A1, and 80% of the heat load c1 is distributed to the divided space A2. Similarly, for the first to fourth showcases 31 to 34, the total electric energy calculation unit 55 also sets the initial value of the heat load of the showcase corresponding to the outside air temperature and the room temperature acquired in step S1 for each showcase. Referring to the relationship with the set temperature in the cabinet, the initial value of the thermal load is obtained for each of the first to fourth showcases 31 to 34, and each obtained thermal load is divided according to the distribution ratio of the thermal load distribution table D. Distribute to spaces A1 and A2. For reference, an example of the relationship between the initial value of the thermal load of the first air conditioner 21 and the space setting temperature is shown in a curve L2 in FIG.

  The total electric energy calculation unit 55 also obtains the thermal loads of other thermal elements related to the store S, and distributes them to the divided spaces A1 and A2 according to the distribution ratio of the thermal load distribution table D. The total electric energy calculation unit 55 calculates the window W1 based on the time zone to be calculated, the outside air temperature obtained from the outdoor temperature sensor 43, the temperature detected by the first temperature sensor 41, the heat insulation characteristics of the windows W1 and W2, and the like. , W2 is calculated, and 85% of the calculated heat load is distributed to the divided space A1, and 15% is distributed to the divided space A2. The total electric energy calculation unit 55 calculates the heat load of the outside air entering from the entrance / exit E based on the time zone to be calculated, the outside air temperature obtained from the outdoor temperature sensor 43, the number of times of opening / closing the entrance / exit E, the heat insulation characteristics, etc. And 70% of the obtained thermal load is distributed to the divided space A1, and 30% is distributed to the divided space A2. Then, the total electric energy calculation unit 55 estimates the number of people H staying in the vicinity of the register counter in the time zone to be calculated based on the past visitor number data and the like, and the human heat load corresponding to the estimated number of people 95% of the obtained thermal load is distributed to the divided space A1, and 5% is distributed to the divided space A2.

  As described above, the total power calculation unit 55 distributes the thermal load of each thermal element related to each divided space A1, A2 to the divided space A1 and the divided space A2 based on the distribution characteristics of the heat quantity in the internal space. Then, the total amount of each heat load in the divided spaces A1 and A2 is obtained. The total power amount calculation unit 55 calculates the heat load applied to each of the first air conditioner 21 and the second air conditioner 22 based on the total amount of the heat loads in the divided spaces A1 and A2 and the set temperature. The total amount is obtained for each air conditioner. For the first air conditioner 21, the total power amount calculation unit 55 is configured based on the total amount of heat load in the divided space A1 and the set temperature 22 ° C. of the first air conditioner 21 corresponding to the cell C1. The heat load of the air conditioner 21 is obtained. For the second air conditioner 22, the total power amount calculation unit 55 is configured based on the total amount of heat load in the divided space A2 and the set temperature 24 ° C. of the second air conditioner 22 corresponding to the cell C1. The total amount of heat load of the air conditioner 21 is obtained.

  The total power amount calculation unit 55 converts the total heat load of the first air conditioner 21 and the total heat load of the second air conditioner 22 obtained in step S5 into respective power amounts (energy amounts) ( Step S6). The total electric energy calculation unit 55 performs a total electric energy calculation process for calculating the total electric energy obtained by adding the electric energy of the first air conditioner 21 and the electric energy of the second air conditioner 22 converted in step S6 (step S6). S7), and obtain the total amount of power for this set temperature combination.

  The total power calculation unit 55 determines whether or not the total power is calculated for all temperature combinations (step S8). When determining that the total power amount is not calculated for all temperature combinations (step S8: No), the total power amount calculation unit 55 selects the next temperature combination to be calculated (step S9). Then, the processing after step S4 is performed. For example, when the calculation of the total power amount related to the temperature combination corresponding to the cell C1 is completed, the total power amount calculation unit 55 performs the processing after step S4 on the temperature combination corresponding to the next cell C2, The total electric energy of the air conditioner group 2 in the temperature combination corresponding to the cell C2 is obtained.

  On the other hand, when the total power amount calculation unit 55 determines that the total power amount has been calculated for all temperature combinations (step S8: Yes), the air conditioner control unit 57 calculates the total power amount calculation unit 55. The temperature combination that minimizes the total power amount among the total power amounts thus extracted is extracted as the operating condition of the first air conditioner 21 and the second air conditioner 22 (step S10). The air conditioner control unit 57 performs an air conditioner control process for controlling the first air conditioner 21 and the second air conditioner 22 with the combination of the set temperatures extracted in step S10 (step S11).

  FIG. 8 is a diagram illustrating an example of a calculation result of the total power amount calculation unit 55. For example, in the air conditioner control unit 57, as a calculation result of the total power amount calculation unit 55, a total power amount calculation table T1 in which the calculated total power amount is put in each of the cells C1 to C25 (see FIG. 8). Is output. In this example, the sum of the electric energy of the first air conditioner 21 and the electric energy of the second air conditioner 22 is minimum when the set temperature is a combination corresponding to the cell C14 in the total electric energy calculation table T1. . Therefore, the air conditioner control unit 57 extracts the combination of the set temperatures corresponding to the cell C14 as the operating conditions of the first air conditioner 21 and the second air conditioner 22. And the air conditioner control part 57 sets the set temperature of the 1st air conditioner 21 to 25 degreeC, and sets the set temperature of the 2nd air conditioner 22 to 26 degreeC according to the combination of the set temperature corresponding to the extracted cell C14. Each air conditioner is controlled individually. As a result, in the divided space A1 corresponding to the first air conditioner 21, the room temperature is adjusted to 25 ° C. included in the comfort priority operation condition, and in the divided space A2 corresponding to the second air conditioner 22, the energy saving priority operation is performed. It is adjusted to a room temperature of 26 ° C. included in the conditions.

  As described above, in the embodiment, one closed space provided with a plurality of air conditioners is virtually divided corresponding to each air conditioner, and the characteristics of the divided spaces to which each air conditioner corresponds. The total amount of power consumed by multiple air conditioners is minimized according to the result of determining the amount of power consumed by the air conditioner for each air conditioner based on the operating conditions including the set temperature determined according to A plurality of air conditioners are controlled so as to be. In other words, in the present embodiment, the first air conditioner 21 and the second air conditioner 22 are controlled under optimum operating conditions in accordance with the characteristics of the virtually divided divided spaces A1 and A2, and the electric energy Therefore, it is possible to reduce power consumption required for air conditioning in the entire space while ensuring comfort in the divided space where comfort is required. Furthermore, in the present embodiment, the thermal load of each thermal element is distributed to each divided space A1, A2 based on the heat distribution characteristics in the space to be controlled, and the total heat load of each divided space after distribution. Since the total heat load applied to each air conditioner is actually obtained according to the set temperature, the room temperature of each of the divided spaces A1, A2 can be appropriately adjusted to the set temperature.

  In the present embodiment, the control device 5 performs the processes of Step S1 to Step S11 shown in FIG. 3 at regular timings according to changes in the outside air, or at preset timings, thereby improving comfort. In addition, the first air conditioner 21 and the second air conditioner 22 are controlled so as to satisfy both of the energy saving properties.

  In addition, the system configuration described in the present embodiment is an example, and it goes without saying that there are various system configuration examples depending on applications and purposes. In the embodiment, the case where the control device 5 includes all of the operation condition storage unit 53, the thermal load information storage unit 54, and the total power amount calculation unit 55 has been described as an example. The unit 53, the thermal load information storage unit 54, and the total power amount calculation unit 55 may be distributed over a plurality of devices that are connected via a network line. In this case, the air conditioner control unit 57 acquires each total power amount corresponding to each combination of the set temperatures calculated by the total power amount calculation unit 55 via the network line, and each acquired total power What is necessary is just to control the 1st air conditioner 21 and the 2nd air conditioner 22 with the combination of the setting temperature used as the smallest total electric energy among quantity, respectively. Of course, the number of air conditioners to be controlled by the control device 5 is not limited to two, and may be three or more. In the example of FIG. 4, the amount of electric power is obtained by associating a set temperature combination of two air conditioners with a cell, but the combination of set temperature is associated with a multidimensional array, including the case of three or more units. The amount of power may be obtained.

  Moreover, since the air conditioning system 1 of this Embodiment performs the air conditioning control of one closed space, it is applicable also when the 1st floor and the 2nd floor form a single space. is there.

  An execution program for each process executed by the control device 5 according to the present embodiment is a file in an installable format or an executable format, and is a CD-ROM, flexible disk (FD), CD-R, DVD ( It may be configured to be recorded on a computer-readable recording medium such as Digital Versatile Disk), and provided by being stored on a computer connected to a network such as the Internet and downloaded via the network. You may comprise as follows. Further, it may be configured to be provided or distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Air conditioner group 3 Showcase group 4 Temperature sensor group 5 Control apparatus 21 1st air conditioner 22 2nd air conditioner 31-34 1st-4th showcase 41 1st temperature sensor 42 2nd Temperature sensor 43 Outdoor temperature sensor 51 Input unit 52 Output unit 53 Operating condition storage unit 54 Thermal load information storage unit 55 Total power amount calculation unit 56 Control unit 57 Air conditioner control unit

Claims (6)

An air conditioning system that controls the temperature of one closed space,
A plurality of air conditioners provided for the one closed space;
A plurality of temperature sensors installed at least one in each of a plurality of divided spaces obtained by virtually dividing the one closed space in correspondence with each of the plurality of air conditioners;
Using the temperature detection results by the plurality of temperature sensors and a distribution ratio in which thermal loads due to a plurality of thermal elements related to the one closed space are distributed to the plurality of divided spaces, respectively, the air In accordance with the result of determining the amount of power consumed by the air conditioner for each air conditioner based on the operating conditions including the set temperature determined according to the characteristics of the divided space to which the conditioner corresponds. A control device that controls each of the plurality of air conditioners such that the total amount of power consumed by the air conditioner is minimized;
An air conditioning system characterized by comprising: A control device for an air conditioner for controlling a plurality of air conditioners provided for the one closed space for temperature control of the one closed space,
Temperature detection results by a plurality of temperature sensors installed at least one in each of a plurality of divided spaces obtained by virtually dividing the one closed space corresponding to each of the plurality of air conditioners, and the one According to the characteristics of the divided space to which each air conditioner corresponds, using a distribution ratio in which thermal loads due to a plurality of thermal elements related to one closed space are respectively distributed to the plurality of divided spaces. The total power consumed by the plurality of air conditioners is minimized according to the result of calculating for each air conditioner the amount of power consumed by the air conditioner based on the operating conditions including the set temperature that is determined. The air conditioner control apparatus characterized by controlling each of the plurality of air conditioners. The control device of the air conditioner is
An operating condition storage unit for storing the operating conditions of each air conditioner;
A thermal load information storage unit for storing thermal load distribution ratio information indicating the distribution ratio for each of the plurality of thermal elements;
Based on the operating conditions of each air conditioner stored in the operating condition storage unit, for each combination of set temperatures included in each operating condition, temperature detection results by the plurality of temperature sensors and the thermal load information storage unit Using the heat load distribution ratio information stored in the table, the electric power consumed by the air conditioner is obtained for each air conditioner, and the total electric power for calculating the total electric energy obtained by summing the obtained electric energy is calculated. A quantity calculation unit;
An air conditioner that extracts a set temperature combination that is the smallest total electric energy among the total electric energy calculated by the total electric energy calculation unit, and controls each of the plurality of air conditioners by the extracted set temperature combination Machine control unit,
The air conditioner control device according to claim 2, further comprising:   The plurality of thermal elements are at least each air conditioner, a heating / cooling heat source in the one closed space, solar heat, and outside air heat that has entered the one closed space. The control device for an air conditioner according to claim 3.   The total electric energy calculation unit obtains the thermal load of each thermal element, distributes the obtained thermal load of the thermal element to each divided space at a ratio indicated by the thermal load distribution ratio information, The air according to claim 3 or 4, wherein the amount of electric power consumed by the air conditioner is determined for each air conditioner based on the heat load and the set temperature respectively distributed to the divided spaces. Harmonic machine control device. A control method for an air conditioner performed by a control device for controlling a plurality of air conditioners provided for the one closed space for temperature control of one closed space,
Temperature detection result acquisition processing for acquiring temperature detection results by a plurality of temperature sensors installed at least one in each of a plurality of divided spaces obtained by virtually dividing the one closed space corresponding to each air conditioner When,
A temperature combination acquisition process for acquiring a combination of set temperatures included in each operation condition based on an operation condition including a set temperature determined according to the characteristics of the divided space corresponding to each air conditioner;
Obtaining thermal load distribution ratio information for each of the plurality of thermal elements indicating a distribution ratio in which thermal loads due to the plurality of thermal elements related to the one closed space are distributed to the plurality of divided spaces. Heat load distribution ratio information acquisition processing;
For each combination of the set temperatures acquired in the temperature combination acquisition process, using the temperature detection result acquired in the temperature detection result acquisition process and the thermal load distribution ratio information acquired in the thermal load distribution ratio information acquisition process And calculating the total amount of electric power consumed by the air conditioner for each of the air conditioners, and calculating the total amount of electric power obtained by totaling the calculated amounts of electric power, and
An air conditioner that extracts a combination of set temperatures that is the smallest total electric energy among the total electric energy calculated in the total electric energy calculation process, and controls each of the plurality of air conditioners by the extracted temperature combination. Control processing,
The control method of the air conditioner characterized by including.

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