JP6223780B2 - Air conditioning charge calculation device, control method therefor, and air conditioning system - Google Patents

Description

  The present invention relates to an air-conditioning charge calculation apparatus, a control method thereof, and an air-conditioning system, and more specifically, relates to an air-conditioning charge calculation apparatus, a control method thereof, and an air-conditioning system capable of calculating an appropriate charge according to a use situation.

2. Description of the Related Art Conventionally, a multi-air conditioning system including one or more refrigerant systems configured by connecting a plurality of indoor units to at least one outdoor unit is known. In office buildings, tenant buildings, and the like, such a multi-air conditioning system is centrally managed to apportion the usage charge of the air conditioning system to each user of a plurality of indoor units.
For example, Patent Document 1 discloses a technique for apportioning charges for a plurality of air conditioning systems driven by different power sources.
Japanese Patent Application Laid-Open No. 2003-228561 discloses a technique that can apportion an appropriate fee for standby power of an outdoor unit.

Japanese Patent No. 4544968 JP 2010-286218 A

  However, in the inventions disclosed in Patent Documents 1 and 2, the calculation error between the total power consumption of the air conditioner and the power consumption actually allocated to the tenant is not taken into consideration. When an error occurs, there is a problem that the owner is forced to pay for the air conditioning charges for the error. In addition, there is a method of equally dividing the power consumption corresponding to the error among each tenant, but it may be difficult to obtain an understanding from a tenant who has tried to save energy or a tenant whose use is extremely small.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the air-conditioning charge calculation apparatus which can perform an appropriate charge calculation according to a use condition, its control method, and an air-conditioning system.

In order to solve the above problems, the air-conditioning charge calculation apparatus, the control method thereof, and the air-conditioning system of the present invention employ the following means.
An air conditioning charge calculation device for calculating a charge of an air conditioning system used for air conditioning of a plurality of sections, each of the plurality of indoor units arranged in the plurality of sections is included in the air conditioning system, A meter that transmits a consumption signal indicating an energy consumption amount of a power source that drives the air conditioning system, a reception unit that receives the consumption signal, and the consumption signal received by the reception unit An air-conditioning charge calculation unit that calculates a usage charge, and the air-conditioning charge calculation unit includes a selection unit that receives an input of a distribution method of the air-conditioning system selected for each indoor unit from a plurality of distribution methods. In addition, the usage fee of the power source is calculated for each indoor unit by a common apportioning method input to the selection unit for each indoor unit, and the total consumption amount for each apportioned indoor unit and the energy consumption of the power source are calculated. Between quantity If there is a difference, to employ a conditioning charge calculation apparatus characterized by performing re proportionally distributed errors.

According to the present invention, for each indoor unit, an input of any one of the distribution methods is accepted from among a plurality of distribution methods. Therefore, it is easier for the user to set the distribution method suitable for the user's needs. Easy. Moreover, since the usage charge of the power source is calculated for each indoor unit by a common apportioning method input for each indoor unit, appropriate apportioning calculation can be performed.
Furthermore, if there is an error between the apportioned total amount of consumption for each indoor unit and the power source consumption, the error is redistributed and the error can be redistributed to each air conditioner. As a result, it is possible to minimize the calculation error due to overflow, round-up, round-down, etc. when calculating the distribution ratio of the power consumption for each air conditioner, that is, the distribution ratio. Further, it is possible to minimize apportionment calculation errors caused by the standby power.
Here, specifically, the overflow when calculating the distribution rate is as follows. For example, in order to distribute the power consumed by standby power on holidays, etc. at the allocation rate for each air conditioner on weekdays, the integration is large because the standby power on holidays is minimal compared to the power consumption on weekdays. It is desirable to make a prorated calculation over such a long period (for example, one week to one month). However, as described above, when the period is lengthened, it means that there is a concern that an overflow may occur in the total amount of operation for each air conditioner necessary for calculating the distribution rate.
In addition, rounding up or rounding down when calculating the distribution rate means that, for example, when the total amount of operation for each air conditioner increases, the air conditioner with a low operating rate and an air conditioner with a low air conditioning capability and a small pulse count for calculating consumption This means that there is a possibility of errors due to truncation because the machine allocation rate is minimal and less than the number of significant digits.

  In the above invention, it may be possible to select whether or not the error is redistributed to each indoor unit.

  According to the present invention, in order to be able to select whether to redistribute the error to each indoor unit, select a calculation method that matches the user's circumstances, such as “If the error is within the allowable range, do not redistribute” it can. Further, by setting a value as a reference for selecting whether or not to redistribute the error for each user, it becomes possible to adapt to the operation required by each user.

  In the above invention, the error may be calculated for each indoor unit by a common distribution method input for each indoor unit.

  According to the present invention, since the error is calculated for each indoor unit by a common distribution method input for each indoor unit, the consumption is shared according to the operation performance of the air conditioner, which is understood by the user. It is easy to set the apportionment method to meet the user's needs. In addition, it is possible to avoid the allocation of usage charges to non-occupied tenants who do not use the air conditioner, and so on.

  In the above invention, when an overflow occurs in the total amount of operation for each indoor unit, the air conditioning charge calculation unit divides a predetermined period until an overflow does not occur, and calculates the amount of the divided period. The sum of the quantities may be the sum of consumption for each indoor unit in the predetermined period.

  According to the present invention, when an overflow occurs in the total operation amount for each indoor unit, the calculation is performed by dividing the predetermined period while increasing the number of divisions until no overflow occurs and calculating the total operation amount. Therefore, it is possible to avoid occurrence of calculation errors due to overflow. In addition, since the division unit can be set manually, operation according to the user's circumstances is possible.

  The present invention is a control method of an air conditioning charge calculation device for calculating a charge of an air conditioning system used for air conditioning of a plurality of sections, each of a plurality of indoor units arranged in the plurality of sections, A meter that is included in the air conditioning system and that transmits a consumption signal indicating an energy consumption amount of a power source that drives the air conditioning system, a receiving unit that receives the consumption signal, and the consumption signal received by the receiving unit An air-conditioning charge calculation unit that calculates a charge for use of the air-conditioning system using the air-conditioning charge calculation unit, wherein the air-conditioning charge calculation unit is an apportioning method for the air-conditioning system selected for each indoor unit from among a plurality of apportioning methods. A selection unit that accepts an input; and a step of calculating a usage charge for the power source for each indoor unit according to a common apportioning method that is input to the selection unit for each indoor unit. Sum and power If there is an error between the energy consumption, to adopt a method of controlling the air-conditioning charge calculation apparatus characterized by comprising the step of re-proportionally distributed errors.

According to the present invention, for each indoor unit, an input of any one of the distribution methods is accepted from among a plurality of distribution methods. Therefore, it is easier for the user to set the distribution method suitable for the user's needs. Easy. Moreover, since the usage charge of the power source is calculated for each indoor unit by a common apportioning method input for each indoor unit, appropriate apportioning calculation can be performed.
Furthermore, if there is an error between the apportioned total amount of consumption for each indoor unit and the power source consumption, the error is redistributed and the error can be redistributed to each air conditioner. Thus, it is possible to minimize calculation errors due to overflow, rounding up, and rounding down when calculating the distribution rate for each air conditioner. Further, it is possible to minimize apportionment calculation errors caused by the standby power.

  The present invention employs an air conditioning system comprising the above-described air conditioning fee calculation apparatus according to the present invention and the air conditioning system.

  An air-conditioning system equipped with an air-conditioning charge calculation device as in the present invention performs an error re-distribution calculation when there is an error between the sum of consumption for each allocated indoor unit and the consumption of the power source. Therefore, the error can be redistributed to each air conditioner, and thereby, the calculation error due to overflow, rounding up or down when calculating the distribution rate for each air conditioner can be minimized. Further, it is possible to minimize apportionment calculation errors caused by the standby power.

  The present invention is a program of an air conditioning charge calculation device for calculating a charge of an air conditioning system used for air conditioning of a plurality of sections, wherein each of the plurality of indoor units arranged in the plurality of sections is the air conditioning A meter for transmitting a consumption signal indicating an energy consumption amount of a power source driving the air conditioning system, a receiver for receiving the consumption signal, and the consumption signal received by the receiver. An air-conditioning charge calculation unit that calculates a charge for use of the air-conditioning system using the air-conditioning charge calculation unit, and the air-conditioning charge calculation unit inputs an apportioning method of the air-conditioning system selected for each indoor unit from a plurality of apportioning methods. A selection unit that receives the power source, and calculates the usage fee of the power source for each indoor unit by a common apportioning method input to the selection unit for each indoor unit, and the sum of consumption for each apportioned indoor unit and The power source If there is an error between the Energy consumption, it employs a program for executing a process of re proportionally distributed errors in the computer.

According to the present invention, for each indoor unit, an input of any one of the distribution methods is accepted from among a plurality of distribution methods. Therefore, it is easier for the user to set the distribution method suitable for the user's needs. Easy. Moreover, since the usage charge of the power source is calculated for each indoor unit by a common apportioning method input for each indoor unit, appropriate apportioning calculation can be performed.
Furthermore, if there is an error between the apportioned total amount of consumption for each indoor unit and the power source consumption, the error is redistributed and the error can be redistributed to each air conditioner. Thus, it is possible to minimize calculation errors due to overflow, rounding up, and rounding down when calculating the distribution rate for each air conditioner. Further, it is possible to minimize apportionment calculation errors caused by the standby power.

  According to the present invention, since the error between the apportioned sum of consumption for each indoor unit and the consumption of the power source is redistributed, the calculation error of apportioned consumption for each air conditioner can be minimized. Have

It is the schematic block diagram which showed the air-conditioning charge calculation apparatus and air-conditioning system concerning one Embodiment of this invention. It is the figure which showed the table memorize | stored in the air-conditioning charge calculation apparatus concerning one Embodiment of this invention. It is the figure which showed the table memorize | stored in the centralized control apparatus concerning one Embodiment of this invention. It is the flowchart which showed the procedure of the charge calculation concerning one Embodiment of this invention. It is the flowchart which showed the procedure of the error re-distribution concerning one Embodiment of this invention.

Hereinafter, an embodiment of an air conditioning charge calculation device, a control method thereof, and an air conditioning system according to the present invention will be described with reference to the drawings.
FIG. 1 shows an air-conditioning charge calculation apparatus according to the present embodiment, a control method thereof, a schematic configuration of an air-conditioning system, an air-conditioning charge calculation apparatus, and an air conditioner system to which the air-conditioning charge calculation apparatus is applied (for example, an entire tenant building). A system for air conditioning) is shown.
As shown in FIG. 1, the air conditioner system according to the present embodiment is a multi-type air that employs GHP2 and an EHP (Electric Heat Pump) method of a multi-type air conditioner that employs a GHP (Gas Heat Pump) method. It is comprised from EHP4 of a harmony machine.

GHP2 is supplied with gas 5 and electricity 7 as power sources. More specifically, as shown in FIG. 1, the gas 5 is supplied to the outdoor unit 10, and the electricity 7 is supplied to the outdoor unit 10 and the indoor unit 12. The GHP 2 includes a gas flow meter 6 and an electric energy meter 8. Here, the gas flow meter 6 transmits a pulse signal every time a predetermined amount (for example, 1 m ³ ) of gas is supplied, and transmits the pulse signal to the centralized control device 22 described later. The electric energy meter 8 transmits a pulse signal every time a predetermined amount (for example, 1 kWh) of electric power is supplied, and transmits the pulse signal to the central control device 22.
The GHP 2 includes at least one (two in FIG. 1) outdoor unit 10 and at least one (three in FIG. 1) indoor unit 12 corresponding to each outdoor unit 10. Each outdoor unit 10 constitutes an air conditioning system 2-1, 2-2 connected to one or more indoor units 12 by a refrigerant pipe (not shown).

The EHP 4 is supplied with three-phase electricity 13 and single-phase electricity 15 as power sources. More specifically, as shown in FIG. 1, the three-phase electricity 13 is supplied to the outdoor unit 18 and the single-phase electricity 15 is supplied to the indoor unit 20 from the viewpoint of electricity. Is done.
The EHP 4 includes a three-phase energy meter 14 and a single-phase energy meter 16. Here, the three-phase electric energy meter 14 transmits a pulse signal every time the electric energy of the three-phase electricity 13 is supplied by a predetermined amount (for example, 1 kWh), and transmits the pulse signal to the centralized control device 22 described later. The single-phase electric energy meter 16 transmits a pulse signal every time the electric energy of the single-phase electricity 15 is supplied by a predetermined amount (for example, 1 kWh), and transmits the pulse signal to the centralized control device 22 described later.
The EHP 4 includes at least one (two in FIG. 1) outdoor unit 18 and at least one (three in FIG. 1) indoor unit 20 corresponding to each outdoor unit 18. Each outdoor unit 18 constitutes an air conditioning system 4-1, 4-2 connected to one or more indoor units 20 by a refrigerant pipe (not shown).

  GHP2 and EHP4 are used for air conditioning a plurality of sections (tenants) of a building. A tenant may use a mixture of indoor units 12 and 20 belonging to different types of outdoor units, such as three indoor units 12 belonging to GHP2 and one indoor unit 20 belonging to EHP4.

The central control device 22 includes a storage device 28. The central control device 22 further includes an arithmetic control device, an input device, an output device, and a communication device (not shown), and can be realized by a computer system such as a personal computer.
A program for realizing all or part of the processing is recorded in the storage device 28 and stored in a computer-readable state. Various operations are performed by the arithmetic control device reading out and executing the program from the storage device 28. The process may be realized.
The central control device 22 receives pulse signals from the gas flow meter 6, the electric energy meter 8, the three-phase electric energy meter 14, and the single-phase electric energy meter 16. The centralized control device 22 accumulates (adds) the number of received pulse signals every predetermined time (for example, every 10 minutes, every hour, every day).

  In addition, the centralized control device 22 according to the present embodiment includes a USB (Universal Serial Bus) connector. The amount of operation for each indoor unit calculated based on the selected apportioning method and the integrated value of the pulse signal for each predetermined time are stored in the USB memory 24 connected to the USB connector.

  The central control device 22 is connected to a control device that controls each of the indoor units 12 and 20 so as to allow information communication. Thereby, the centralized control device 22 can collect and store the operation amount for each air conditioner (information relating to the operation of each indoor unit 12, 20). Specifically, the collected information includes the operation time of each indoor unit 12, 20 within a predetermined time (for example, one day), the refrigerant flow rate (a numerical value corresponding to the indoor unit electronic expansion valve opening), the thermostat. The time of ON (at the time of air conditioning operation) is illustrated.

The air conditioning charge calculator 26 includes a storage device 27. The air-conditioning charge calculator 26 further includes an arithmetic control device, an input device, an output device, and a communication device (not shown), and can be realized by a computer system such as a personal computer. A program for realizing all or part of the processing is recorded in the storage device 27 and stored in a computer-readable state. Various operations are performed by the arithmetic control device reading and executing the program from the storage device 27. The process may be realized.
The air conditioning charge calculator 26 includes a USB connector. The air conditioning charge calculator 26 receives and stores data such as the operation amount for each air conditioner and the integrated value of the pulse signal for each predetermined time from the central control device 22 via the USB memory 24.

  FIG. 2 shows a table stored in the storage device 27 of the air conditioning charge calculator 26. More specifically, the storage device 27 stores a system definition table 30, a pulse definition table 32, a basic charge table 34, a unit price table 35, and a tenant configuration table 36. Data stored in these tables can be referred to by a display device provided in the air conditioning charge calculator 26 and can be rewritten by an input device.

The system definition table 30 stores an air conditioner ID, which is an identifier for identifying each indoor unit, and a system selection indicating which meter is connected to each indoor unit.
The pulse definition table 32 stores a pulse system that is an identifier for identifying a meter, a pulse constant that is a unit in which each meter transmits one pulse, and a power / gas classification in association with each other.
The basic charge table 34 stores a tenant ID for individually identifying each tenant and an electric or gas basic charge for each tenant in association with each other.
The unit price table 35 stores the pulse system, the unit price within the hour, and the unit price outside the hour in association with each other. The unit price for hours is the unit price of electricity or gas within the time set to be within time in the billing time zone table 61 described later, and the unit price for overtime is the electricity or time at times other than the time set to be within time. Shows the unit price of gas.
The tenant configuration table 36 stores a tenant ID and a configuration air conditioner ID that identifies an indoor unit used for the tenant specified by the tenant ID in association with each other.

  Since the data transfer between the central control device 22 and the air conditioning charge calculator 26 is performed by the USB memory 24, wiring work between the central control device 22 and the air conditioning charge calculator 26 becomes unnecessary, and the installation of the apparatus is easy. Become.

FIG. 3 shows a table stored in the storage device 28 of the central control device 22. The storage device 28 stores a distribution system / model capability table 60 and a billing time zone table 61. The data stored in these tables can be referred to by a display device provided in the central control device 22 and can be rewritten by an input device.
The apportionment method / model capability table 60 is an apportionment method that is a type of an air conditioner ID and a method of calculating an operation amount that is dimensionless in order to calculate a usage fee of the indoor unit specified by the air conditioner ID. The model capability that is the capability of the indoor unit specified by the air conditioner ID is stored in association with each other.
The charging time zone table 61 stores the start time and end time of the predetermined time described above when the unit price of electricity and / or gas is different between the predetermined time of the day and other time zones. Yes. This predetermined time is within the time, and the other time is outside the time.

  In FIG. 4, the calculation flow of the air-conditioning charge calculation apparatus in embodiment of this invention is shown.

  Step S2: The central control device 22 receives operation data for calculating the operation amount for each indoor unit. The central control device 22 reads the apportioning method and model capability set for each indoor unit with reference to the apportioning method / model capability table 60 (see FIG. 3). The central control device 22 calculates the operation amount for each air conditioner (the operation amount of each indoor unit) based on the read distribution method. The operation amount for each air conditioner is made dimensionless by being multiplied by a constant set in advance and stored in the storage device 28.

  The central control device 22 refers to the billing time zone table 61 (see FIG. 3) and obtains the integrated value of the operating amount per air conditioner within the set time and the integrated value of the operating amount per air conditioner outside the time. calculate.

  The apportioning system consists of (1) the operating time of each indoor unit x model capacity, (2) the air conditioning load of each indoor unit (refrigerant flow rate; numerical value according to the indoor unit electronic expansion valve opening), (3) thermo ON It is selected from methods such as time (during air-conditioning operation) x model capacity.

  According to the data structure of the apportionment method / model capability table 60 (see FIG. 3), the apportionment method is set for each indoor unit. Therefore, for example, in the case of the indoor unit 12 of GHP2, a common distribution method is set for gas and electricity. In the case of the EHP4 indoor unit 20, a common distribution method is set for the three-phase electricity 13 and the single-phase electricity 15.

  The method of setting the apportionment method corresponding to the indoor unit is different from the method of setting the apportionment method for each power source (gas, three-phase electricity, single-phase electricity, etc.), such as users (building managers, tenant users, etc.) ) Is easier to understand, and it is easy to set up a distribution method that meets the needs of the user.

  Step S4: Each meter (including the gas flow meter 6, the electric energy meter 8, the three-phase electric energy meter 14, and the single-phase electric energy meter 16) transmits a pulse signal according to the usage amount of each power source, A call is sent to the central control device 22. The central control device 22 receives a pulse signal.

  The central control apparatus 22 refers to the billing time zone table 61 (see FIG. 3), and calculates the integrated value of the pulse signal received within the set time and the integrated value of the pulse signal received outside the time. .

  Step S6: The centralized control device 22 stores the operation amount for each air conditioner calculated in Step S2 and the integrated value of the pulse signal calculated in Step S4 (both are calculated separately within the time and outside the time). To do. The stored operating amount for each air conditioner and the integrated value of the pulse signal are transferred to the air conditioning charge calculator 26 via the USB memory 24 at predetermined time intervals (for example, every day).

  Step S8: The air conditioning charge calculator 26 refers to the pulse definition table 32 (see FIG. 2) and multiplies the integrated value of the pulse signal recorded in step S6 by a pulse constant for each pulse system. Thereby, the air conditioner belonging to each pulse system (more precisely, the indoor unit specified by the air conditioner ID in which the system selection corresponding to each pulse system is set in the system definition table 30 (see FIG. 2)). Of total consumption. This total consumption amount is calculated separately for in-hours and out-of-hours.

Step S10: The air conditioning charge calculator 26 calculates the consumption amount for each indoor unit by the following equation. The amount of consumption for each indoor unit is calculated separately for in-hours and out-of-hours.
Air-conditioner consumption = total consumption x operation amount of the corresponding air conditioner ÷ total amount of operation amount of the air conditioner belonging to the meter

  Since the operation amount for each air conditioner is made dimensionless in step S2, even if a plurality of indoor units belonging to the same pulse system are set to different distribution methods, the pulse It is possible to apportion the total consumption of each power source calculated from the constants to each indoor unit by the ratio of the operation amount for each air conditioner.

Step S12: The air conditioning charge calculator 26 refers to the system definition table 30 (see FIG. 2) and searches which pulse system each indoor unit belongs to. The air-conditioning charge calculator 26 refers to the unit price table 35 (see FIG. 2) and searches for the in-hour unit price and the overtime unit price corresponding to the searched pulse system. The air conditioning charge calculator 26 calculates a use charge for each indoor unit according to the following equation.
Charge for each air conditioner = consumption per air conditioner (within hours) x unit price within hours + consumption per air conditioner (outside hours) x unit price after hours

Step S14: The air conditioning charge calculator 26 refers to the basic charge table 34 (see FIG. 2) and searches for the basic charge for electricity and the charge for gas usage corresponding to each tenant ID. The air conditioning fee calculator 26 refers to the tenant configuration table 36 (see FIG. 2) and refers to the configuration air conditioner corresponding to each tenant ID.
Specifically, the air conditioning fee calculator 26 performs processing for calculating the air conditioning fee for each tenant by the following formula.

First, a case where the power source is electricity will be described.
Air conditioning charge per tenant (electricity) = basic charge (electricity) + Σ (charge per use of air conditioner of the air conditioner constituting the tenant)
The air-conditioning charge calculator 26 calculates and adds the calculation processing based on these formulas, both within and outside the hours, with reference to various tables. In the calculation process, the consumption amount of the pulse system in which the corresponding indoor unit is not registered in the system definition table 30 (see FIG. 2) is zero. Further, when the power / gas classification of the pulse definition table 32 (see FIG. 2) is gas, the consumption amount is 0 and is not added.

Next, a case where gas is used as a power source will be described.
Air conditioning charge per tenant (gas) = basic charge (gas) + Σ (use charge per air conditioner of the air conditioner constituting the tenant)
The air-conditioning charge calculator 26 calculates and adds the calculation processing based on these formulas, both within and outside the hours, with reference to various tables. In the calculation process, the consumption amount of the pulse system in which the corresponding indoor unit is not registered in the system definition table 30 (see FIG. 2) is zero. Further, when the power / gas classification of the pulse definition table 32 (see FIG. 2) is electricity, the consumption amount is 0 and is not added.
In addition, the unit price table 35 (see FIG. 2) is not set for each pulse system, but the calculation can be simplified by setting only the unit price for gas and electricity within and outside hours.

  The fee calculated by the above flow has the following characteristics.

  The gas flow meter and watt-hour meter in GHP2 adopt the same proportional method. The watt-hour meter in GHP2 and the watt-hour meter in EHP4 adopt an independent distribution method. That is, different distribution methods can be set for a plurality of systems, that is, GHP2 and EHP4 in the present embodiment. In addition, a plurality of powers in the same system, in this embodiment, the power system and gas system of GHP2 are set in the same apportioning system. For example, a proportional distribution method based on the refrigerant flow rate (air conditioning load) can be selected for GHP2, and a proportional distribution method based on operation time can be selected for EHP4.

  As a modification of the present embodiment, a configuration in which the central control device 22 and the air conditioning charge calculator 26 are connected via a LAN and data transfer is performed via a LAN instead of the USB memory 24 is possible. In that case, the LAN can be configured to include a plurality of air conditioning charge calculators 26 each capable of independently selecting a charge calculation formula. According to the air conditioning charge calculation apparatus having such a configuration, energy calculation according to the purpose is facilitated, and energy management can be performed with higher convenience.

  Furthermore, as another example of the apportionment method, a method of apportioning the charge in proportion to “the operation time of the indoor fan motor that is the main energy consuming source of the indoor unit 12 × the fan motor rotational speed × the model capability” may be adopted. preferable. By using such a proportional distribution method, it is possible to calculate the energy consumption with higher accuracy.

  In step S10 of FIG. 4, if a calculation error occurs due to overflow, rounding up, or rounding down when calculating the ratio of the operation amount for each air conditioner, that is, the distribution rate, calculation for redistributing the calculation error is required.

  FIG. 5 shows a flowchart of error re-distribution calculation in the embodiment of the present invention.

  Step S501: The distribution ratio of the power consumption amount for a predetermined period is calculated using the sum of the operation amounts of the indoor units for the predetermined period as a denominator. At that time, calculation errors may occur due to overflow, rounding up or rounding down when calculating the allocation rate. When an overflow occurs in the total amount of operation, which is the denominator, a predetermined period is divided in order (two divisions, three divisions, etc.) until no overflow occurs, and each apportionment of the divided periods is calculated. The total amount of power is taken as the amount of power consumed for a predetermined period. Here, the maximum number of divisions is up to one day. A division unit (for example, every week, every 10 days, etc.) may be manually operated by the operator.

Step S502: Air conditioners belonging to each pulse system calculated in step S8 (see FIG. 4) (more precisely, system selection corresponding to each pulse system is set in the system definition table 30 (see FIG. 2)). The difference between the total consumption of the indoor unit specified by the air conditioner ID) and the sum of the proportional consumption D for each air conditioner calculated in step S501 is calculated.
Calculation errors may occur due to omission of holidays due to divisional calculation or rounding up or down of the allocation rate. Whether or not to redistribute this error is determined by setting a predetermined range for each user and determining whether or not the error is within this predetermined range.

  Step S503: It is determined whether or not the error calculated in step S502 is within a predetermined range. If it is within the predetermined range, it is determined that there is no need to apportion the error, and the flow ends. If it exceeds the predetermined range, the process proceeds to step S504.

  Step S504: The error calculated in step S502 is apportioned by the ratio of the operating amount for each air conditioner over a predetermined period, that is, the distribution rate. Let the calculated apportioning error be E.

Step S505: The air conditioning charge calculator 26 calculates the consumption amount for each air conditioner by the following equation. :
Air-conditioner consumption = Σ (air-conditioner consumption D) + prorated error E
When the consumption amount for each air conditioner is calculated, the apportionment calculation is completed, and the process proceeds to step S12 (see FIG. 4).

  As described above, since the calculation error generated at the time of the calculation is prorated according to the distribution rate in each air conditioner, the apportionment based on the actual use can be performed and the burden on the owner can be reduced.

As described above, according to the air conditioning charge calculation device, the control method thereof, and the air conditioning system according to the present embodiment, an input of any apportioning method among a plurality of apportioning methods is accepted for each indoor unit. Therefore, it is easy for the user to easily set the apportioning method suitable for the user's needs. Moreover, since the usage charge of the power source is calculated for each indoor unit by a common apportioning method input for each indoor unit, appropriate apportioning calculation can be performed.
Furthermore, if there is an error between the apportioned total amount of consumption for each indoor unit and the power source consumption, the error is redistributed and the error can be redistributed to each air conditioner. As a result, it is possible to minimize the calculation error due to overflow, round-up, round-down, etc. when calculating the distribution ratio of the power consumption for each air conditioner, that is, the distribution ratio. Further, it is possible to minimize apportionment calculation errors caused by the standby power.

  In addition, since it is possible to select whether or not to redistribute the error to each indoor unit, it is possible to select a calculation method that matches the user's circumstances, such as “Do not redistribute if the error is within the allowable range”. Further, by setting a value as a reference for selecting whether or not to redistribute the error for each user, it becomes possible to adapt to the operation required by each user.

  In addition, since the error is calculated for each indoor unit by a common apportioning method input for each indoor unit, the consumption is shared according to the operation results of the air conditioner, and it is easy for the user to understand. You can set the apportionment system that suits your needs. In addition, it is possible to avoid the allocation of usage charges to non-occupied tenants who do not use the air conditioner, and so on.

  In addition, if an overflow occurs in the total amount of operation for each indoor unit, calculation is performed by dividing the predetermined period until the overflow no longer occurs, and the total amount of operation is calculated. Can be avoided. In addition, since the division unit can be set manually, operation according to the user's circumstances is possible.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  In the present embodiment, the power sources are different powers, but all the power sources may be the same power such as electricity or gas. Moreover, several power sources may be the same power, and the kind of power is not ask | required.

2 GHP (Gas Heat Pump)
2-1, 2-2 Air conditioning system 4 EHP (Electric Heat Pump)
4-1, 4-2 Air conditioning system 5 Gas 6 Gas flow meter 7 Electricity 8 Electricity meter 10 Outdoor unit 12 Indoor unit 13 Three-phase electricity 14 Three-phase electricity meter 15 Single-phase electricity 16 Single-phase electricity meter 18 Outdoor unit 20 indoor unit 22 centralized control device 24 USB memory 26 air conditioning charge calculator 27 storage device 28 storage device 30 system definition table 32 pulse definition table 34 basic charge table 35 unit price table 36 tenant configuration table 60 apportioning system / model capability table 61 charging time zone table

Claims (7)

An air-conditioning charge calculation device for calculating a charge of an air-conditioning system used for air-conditioning of a plurality of sections,
Each of the plurality of indoor units arranged in the plurality of sections is included in the air conditioning system,
A meter that transmits a consumption signal indicating the energy consumption of a power source that drives the air conditioning system;
A receiver for receiving the consumption signal;
An air-conditioning charge calculation unit that calculates a use charge of the air-conditioning system using the consumption signal received by the receiving unit, and
The air-conditioning charge calculation unit includes a selection unit that receives an input of a proportional distribution method of the air-conditioning system that is selected for each indoor unit from a plurality of proportional distribution methods, and the usage fee of the power source is input to the selection unit for each indoor unit In addition to calculating for each indoor unit using the common distribution method entered in
An air-conditioning charge calculation apparatus that performs a re-distribution calculation of an error when there is an error between the sum of the consumption amount of each apportioned indoor unit and the energy consumption of the power source.   The air-conditioning charge calculation apparatus according to claim 1, wherein the error can be selected as to whether or not the error is redistributed to each indoor unit.   The air-conditioning charge calculation apparatus according to claim 1 or 2, wherein the error is calculated for each indoor unit by a common distribution method input for each indoor unit.   When an overflow occurs in the total operation amount for each indoor unit, the air conditioning charge calculation unit divides a predetermined period until an overflow does not occur, and calculates a total of the apportionment amount for the divided period. The air-conditioning charge calculation apparatus according to any one of claims 1 to 3, wherein a total amount of consumption for each of the indoor units in the predetermined period is set. A control method for an air-conditioning charge calculation device that calculates a charge for an air-conditioning system used to air-condition a plurality of sections,
Each of the plurality of indoor units arranged in the plurality of sections is included in the air conditioning system,
A meter that transmits a consumption signal indicating the energy consumption of a power source that drives the air conditioning system;
A receiver for receiving the consumption signal;
An air-conditioning charge calculation unit that calculates a use charge of the air-conditioning system using the consumption signal received by the receiving unit, and
The air-conditioning charge calculation unit includes a selection unit that receives an input of a proportional distribution method of the air-conditioning system that is selected for each indoor unit from a plurality of proportional distribution methods, and the usage fee of the power source is input to the selection unit for each indoor unit Along with the step of calculating for each indoor unit by the common apportioning method input to
The control of the air-conditioning charge calculation apparatus, characterized by having a step of performing a re-distribution calculation of the error when there is an error between the sum of the consumption of each apportioned indoor unit and the energy consumption of the power source Method. An air conditioning charge calculation device according to any one of claims 1 to 4,
The air conditioning system;
An air conditioning system comprising: An air-conditioning charge calculation device for calculating a charge of an air-conditioning system used for air-conditioning of a plurality of sections,
Each of the plurality of indoor units arranged in the plurality of sections is included in the air conditioning system,
A meter that transmits a consumption signal indicating the energy consumption of a power source that drives the air conditioning system;
A receiver for receiving the consumption signal;
An air-conditioning charge calculation unit that calculates a use charge of the air-conditioning system using the consumption signal received by the receiving unit, and
The air-conditioning charge calculation unit includes a selection unit that receives an input of a proportional distribution method of the air-conditioning system that is selected for each indoor unit from a plurality of proportional distribution methods, and the usage fee of the power source is input to the selection unit for each indoor unit In addition to calculating for each indoor unit using the common distribution method entered in
A program for causing a computer to execute a process of performing a re-distribution calculation of an error when there is an error between the sum of the consumed amounts for each indoor unit and the energy consumption of the power source.

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