JP2017096530A - Calculator, air conditioner, and model selection method and model selection program for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select a model of an air conditioner suitable for an air conditioning load in update of the air conditioner.SOLUTION: An air conditioner includes: a calculation unit 102 configured to calculate secondary operation data for determining an air conditioning load, based on primary operation data on an operation state of the air conditioner within a predetermined period; a judgement unit 103 configured to judge whether a model capacity of the air conditioner is suitable for the air conditioning load based on the secondary operation data, based on the secondary operation data and a predetermined threshold of the air conditioning load; and a determination unit 104 configured to determine a model capacity suitable for the air conditioning load in a case where the judgement unit 103 judged that the model capacity of the air conditioner is not suitable for the air conditioning load based on the secondary operation data.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an arithmetic device, an air conditioner, a model selection method thereof, and a model selection program.

Currently, about 60% of the air conditioner market in Japan is said to be renewal demand, and it is difficult to assume that new demand will increase in the future, and renewal of air conditioners is an important technical issue. Conventionally, the model selection at the time of air conditioner replacement has been selected with the same capacity as that currently installed.
The following Patent Document 1 discloses diagnosing useless power consumption for the usage status of a user of an air conditioner, and diagnosing whether the usage status of the air conditioner is appropriate for the system. .

JP 2007-271166 A

However, when the accuracy of air conditioning load calculation for model selection performed at the time of air conditioner introduction is poor, or the load may increase while using the air conditioner for a long period of 5 to 10 years, Equivalent capabilities are not always appropriate. For this reason, there is a risk that it becomes uncooled and unwarmed due to lack of capacity, or the capacity to be supplied is excessive than the required air conditioning capacity, which may result in extra equipment costs.
In the method of Patent Document 1, information on the time when the thermostat is turned on and the operation time is stored, and the use status is diagnosed based on this information. There was a problem that could not be done.

  The present invention has been made in view of such circumstances, and an arithmetic device, an air conditioner, and a model selection method and model capable of selecting an air conditioner model suitable for an air conditioning load when the air conditioner is updated. The purpose is to provide a selection program.

In order to solve the above problems, the present invention employs the following means.
The present invention is an air conditioner including an indoor unit and an outdoor unit, and secondary operation data for determining an air conditioning load based on primary operation data related to the operation state of the air conditioner within a predetermined period. Provided is an air conditioner comprising a calculating means for calculating and a storing means for storing the secondary operation data.

According to the present invention, secondary operation data for determining the air conditioning load of an indoor unit and / or an outdoor unit is calculated and stored from primary operation data obtained according to the operation of the air conditioner within a predetermined period. Is done.
Thus, by handling the processed secondary operation data, the actual air conditioning load can be expressed more quantitatively, and the air conditioning load can be quickly obtained.

  The air conditioner determines, based on the secondary operation data and a predetermined threshold value of the air conditioning load, whether the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data. When the determination means and the determination means determine that the model capability of the air conditioner does not match the air conditioning load based on the secondary operation data, the model capability corresponding to the air conditioning load is determined. Determining means.

According to this configuration, when it is determined that the model capacity of the air conditioner is not commensurate with the air conditioning load based on the secondary operation data based on the secondary operation data and the predetermined threshold value of the air conditioning load, The model capability that matches the load is determined.
Thereby, based on the past (predetermined period) actual operation data, the model selection (capacity selection) of the air conditioner suitable for the actual operation can be performed. In addition, it is when performing update work, such as replacement | exchange of an air conditioning apparatus, for example, determining whether the model capability of an air conditioning apparatus is suitable for an air-conditioning load.

  When a plurality of indoor units constituting a common refrigerant circuit are provided in the air conditioner, the calculation means calculates a ratio at which the plurality of indoor units are used at the same time, and the determination unit determines that the ratio is predetermined. When the determination means determines that the ratio is less than a predetermined ratio, the determining unit reduces the model capability of the outdoor unit to be smaller than the model capability of the outdoor unit being used. May be.

  As described above, the air conditioning load for each outdoor unit can be determined based on the proportion of the indoor units used at the same time. If the model capability of the outdoor unit is excessive, reducing the model capability leads to energy saving.

  The calculation means of the air conditioner calculates an air conditioning load of an air conditioning target area for each indoor unit within the predetermined period as the secondary operation data based on the primary operation data, and the air conditioning target area It is determined whether or not the air conditioning load is excessively covered by the indoor unit being used, and the determination unit determines that the air conditioning load of the air conditioning target area is excessively covered by the indoor unit. In such a case, the model capability of the indoor unit may be smaller than the model capability of the indoor unit being used.

  As described above, the air conditioning load for each indoor unit can be determined based on the air conditioning load in the air conditioning target area. If the model capability of the indoor unit is excessive, reducing the model capability leads to energy saving.

  The present invention provides acquisition means for acquiring primary operation data relating to the operating state of the air conditioner within a predetermined period, and calculation for calculating secondary operation data for determining an air conditioning load based on the primary operation data. There is provided an arithmetic device comprising means and storage means for storing the secondary data.

  The present invention is a method for selecting a model of an air conditioner including an indoor unit and an outdoor unit, and is a method for determining an air conditioning load based on primary operation data relating to an operating state of the air conditioner within a predetermined period. On the basis of the calculation step for calculating the next operation data, the storage step for storing the second operation data, the second operation data stored in the storage step and the predetermined threshold value of the air conditioning load. Determining whether or not the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data, and the determination step determines whether the model capability of the air conditioner is based on the secondary operation data. An air conditioner model selection method comprising: a determination step of determining a model capability corresponding to the air conditioning load when it is determined that the air conditioning load does not match.

  The present invention is a model selection program for an air conditioner including an indoor unit and an outdoor unit, and is a program for determining an air conditioning load based on primary operation data relating to an operating state of the air conditioner within a predetermined period. Based on the first process for calculating the next operation data, the second process for storing the second operation data, the second operation data stored by the second process and the predetermined threshold of the air conditioning load, A third process for determining whether or not the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data, and the model capability of the air conditioner is determined by the second process. A model of an air conditioner for causing a computer to execute a fourth process for determining a model capability corresponding to the air conditioning load when it is determined that the air conditioning load is not suitable based on operation data To provide a constant program.

  The present invention has an effect that an air conditioner model can be selected in accordance with an air conditioning load when an air conditioner is updated.

It is the figure which showed roughly the structure of the air conditioning system which concerns on 1st Embodiment of this invention. It is a functional block diagram of the air-conditioning load calculating part which concerns on 1st Embodiment of this invention. It is an example of the primary operation data which concerns on 1st Embodiment of this invention, and the secondary operation data calculated based on primary operation data. It is an operation | movement flow of the air-conditioning load calculating part at the time of the cooling operation of the air conditioning system which concerns on 1st Embodiment of this invention. It is an example of the primary operation data which concerns on 2nd Embodiment of this invention, and the secondary operation data calculated based on primary operation data. It is an operation | movement flow of the air-conditioning load calculating part of the air conditioning system which concerns on 2nd Embodiment of this invention.

Hereinafter, an arithmetic device, an air conditioner, a model selection method thereof, and a model selection program according to embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
Embodiments according to the present invention will be described below with reference to FIGS.
FIG. 1 shows a refrigerant circuit diagram of an air conditioning system 1 according to the present embodiment.
As shown in FIG. 1, the air conditioning system 1 includes an outdoor unit 2 and a plurality of indoor units 3A and 3B, and constitutes a refrigeration cycle (refrigerant system) 7. In the present embodiment, the case of a multi-type air conditioning system having two indoor units will be described as an example. However, the present invention is not limited to this, and one indoor unit is connected to one outdoor unit. May be an air conditioning system or three or more indoor units. In addition, when not distinguishing an indoor unit below, it describes as the indoor unit 3.
The indoor units 3A and 3B are connected in parallel to each other via a branching device 6 between a gas side pipe 4 and a liquid side pipe 5 led out from the outdoor unit 2.

  The outdoor unit 2 heats an inverter-driven compressor 10 that compresses refrigerant, an oil separator 11 that separates lubricating oil from refrigerant gas, a four-way switching valve 12 that switches the circulation direction of refrigerant, and refrigerant and outside air. The outdoor heat exchanger 13 to be exchanged, the supercooling coil 14 configured integrally with the outdoor heat exchanger 13, the heating expansion valve (EEVH) 15, the receiver 16 storing the liquid refrigerant, and the liquid refrigerant A subcooling heat exchanger 17 that provides supercooling, a supercooling expansion valve (EEVSC) 18 that controls the amount of refrigerant that is diverted to the subcooling heat exchanger 17, and a liquid component from the refrigerant gas that is drawn into the compressor 10. And an accumulator 19 for sucking only the gas component to the compressor 10 side, a gas side operation valve 20, and a liquid side operation valve 21.

  The compressor 10 compresses the low-temperature and low-pressure gas refrigerant from the outdoor heat exchanger 13 to produce a high-temperature and high-pressure gas refrigerant, and a scroll compressor may be used. A low pressure sensor 51 is provided in the refrigerant system on the suction side of the compressor 10, and a high pressure sensor 52 is provided in the refrigerant system on the discharge side. The outputs of the pressure sensors 51 and 52 are output to the outdoor controller 27 of the outdoor unit 2.

  Each said apparatus by the side of the outdoor unit 2 is connected as is well-known via the refrigerant | coolant piping 22, and comprises the outdoor side refrigerant circuit 23. FIG. The outdoor unit 2 is provided with an outdoor fan 25 that is driven by a DC fan motor 24 and vents outside air to the outdoor heat exchanger 13, and an oil separator 11 and a suction pipe of the compressor 10. In the meantime, an oil return circuit 26 for returning the lubricating oil separated from the discharged refrigerant gas in the oil separator 11 to the compressor 10 side by a predetermined amount is provided. Furthermore, the outdoor unit 2 is provided with an outdoor controller 27 (details will be described later).

  The gas side pipe 4 and the liquid side pipe 5 are refrigerant pipes connected to the gas side operation valve 20 and the liquid side operation valve 21 of the outdoor unit 2, and are connected to the outdoor unit 2 and to it during installation on site. The pipe length is set according to the distance between the plurality of indoor units 3A and 3B. An appropriate number of branching devices 6 are provided in the middle of the gas side piping 4 and the liquid side piping 5, and an appropriate number of indoor units 3 </ b> A and 3 </ b> B are connected via the branching devices 6. Thereby, one sealed refrigeration cycle (refrigerant circuit) 7 is configured.

The indoor units 3A and 3B are driven by an indoor heat exchanger 30 that exchanges heat between indoor air and a refrigerant for indoor air conditioning, an expansion valve (EEVC) 31 for cooling, and a DC fan motor 32. And an indoor fan 33 that circulates the room air through 30 and is connected to the branching device 6 through the branch gas side pipes 4A and 4B and the branch liquid side pipes 5A and 5B on the indoor side. The indoor units 3A and 3B are provided with an indoor controller 34 (details will be described later) for controlling a cooling expansion valve (EEVC) 31, a DC fan motor 32 for the indoor fan 33, and the like. The indoor controller 34 is connected to the outdoor controller 27.
The indoor controller 34 includes, for example, a microcomputer (hereinafter referred to as “microcomputer”), and controls the refrigeration cycle 7 based on the sensors and the data from the outdoor controller 27 in the refrigeration cycle 7.

In the air conditioning system 1 described above, the cooling operation is performed as follows.
The high-temperature and high-pressure refrigerant gas compressed and discharged by the compressor 10 is separated from the lubricating oil contained in the refrigerant by the oil separator 11. Thereafter, the refrigerant gas is circulated to the outdoor heat exchanger 13 side by the four-way switching valve 12, and is heat-exchanged with the outside air blown by the outdoor fan 25 in the outdoor heat exchanger 13 to be condensed and liquefied. The liquid refrigerant is further cooled by the supercooling coil 14, passes through the heating expansion valve 15, and is temporarily stored in the receiver 16.

  The liquid refrigerant whose circulation amount is adjusted by the receiver 16 is diverted from the liquid refrigerant pipe in the process of flowing through the liquid refrigerant pipe side through the supercooling heat exchanger 17 and is insulated by the supercooling expansion valve (EEVSC) 18. Heat exchange with the expanded refrigerant gives a degree of supercooling. This liquid refrigerant is led out from the outdoor unit 2 to the liquid side pipe 5 through the liquid side operation valve 21, and the liquid refrigerant led out to the liquid side pipe 5 is further connected to each indoor unit 3A, 3B via the branching device 6. To the branched liquid side pipes 5A and 5B.

  The liquid refrigerant divided into the branch liquid side pipes 5A and 5B flows into the indoor units 3A and 3B, is adiabatically expanded by the cooling expansion valve (EEVC) 31, and becomes a gas-liquid two-phase flow. 30. In the indoor heat exchanger 30, the indoor air circulated by the indoor fan 33 and the refrigerant are heat-exchanged, and the indoor air is cooled and provided for indoor cooling. On the other hand, the refrigerant is gasified, reaches the branching device 6 through the branch gas side pipes 4A and 4B, and is merged with the refrigerant gas from the other indoor units in the gas side pipe 4.

  The refrigerant gas merged in the gas side pipe 4 returns to the outdoor unit 2 again, merges with the refrigerant gas from the supercooling heat exchanger 17 through the gas side operation valve 20 and the four-way switching valve 12, and then accumulator 19. To be introduced. In the accumulator 19, the liquid component contained in the refrigerant gas is separated, and only the gas component is sucked into the compressor 10. This refrigerant is compressed again in the compressor 10, and the cooling operation is performed by repeating the above cycle.

On the other hand, the heating operation is performed as follows.
The high-temperature and high-pressure refrigerant gas compressed and discharged by the compressor 10 is separated from the lubricating oil contained in the refrigerant by the oil separator 11 and then the gas-side operation valve 20 side through the four-way switching valve 12. It is circulated in. The refrigerant is led out from the outdoor unit 2 through the gas side operation valve 20 and the gas side pipe 4, and further introduced into the plurality of indoor units 3A and 3B through the branching unit 6 and the indoor side branching gas side pipes 4A and 4B. Is done.

  The high-temperature and high-pressure refrigerant gas introduced into the indoor units 3A and 3B is heat-exchanged with the indoor air circulated through the indoor fan 33 in the indoor heat exchanger 30, and the indoor air is heated and used for indoor heating. The The liquid refrigerant condensed in the indoor heat exchanger 30 reaches the branching device 6 through the cooling expansion valve (EEVC) 31 and the branch liquid side pipes 5A and 5B, and is merged with the refrigerant from other indoor units. It returns to the outdoor unit 2 through the liquid side pipe 5. During heating, in the indoor units 3A and 3B, the refrigerant outlet temperature (hereinafter referred to as the heat exchange outlet temperature) or the refrigerant subcooling degree of the indoor heat exchanger 30 functioning as a condenser becomes the control target value. The opening degree of the cooling expansion valve (EEVC) 31 is controlled through the indoor controller 34.

  The refrigerant that has returned to the outdoor unit 2 reaches the supercooling heat exchanger 17 via the liquid side operation valve 21, and is given supercooling as in the case of cooling, and then flows into the receiver 16 and is temporarily stored. Thus, the circulation amount is adjusted. This liquid refrigerant is supplied to the heating expansion valve (EEVH) 15 and adiabatically expanded, and then flows into the outdoor heat exchanger 13 through the supercooling coil 14.

  In the outdoor heat exchanger 13, heat is exchanged between the outside air blown through the outdoor fan 25 and the refrigerant, and the refrigerant absorbs heat from the outside air and is evaporated and gasified. The refrigerant is introduced from the outdoor heat exchanger 13 through the four-way switching valve 12 to the refrigerant gas from the supercooling heat exchanger 17 and then introduced into the accumulator 19. In the accumulator 19, the liquid component contained in the refrigerant gas is separated, and only the gas component is sucked into the compressor 10 and compressed again in the compressor 10. The heating operation is performed by repeating the above cycle.

  The outdoor controller 27 includes, for example, a microcomputer, a volatile memory, a nonvolatile memory, and the like, and includes a compressor 10, a four-way switching valve 12, a heating expansion valve (EEVH) 15, a supercooling expansion valve (EEVSC) 18, A DC fan motor 24 for the outdoor fan 25 is controlled. For example, the outdoor controller 27 controls the start / stop of the compressor 10 or the number of rotations thereof based on various commands sent from the indoor controller 34, the indoor intake air temperature, the set indoor temperature, etc. Is adjusted to control the indoor air temperature and perform oil return control and the like. Further, the microcomputer realizes various functions by causing the CPU to read and execute the program recorded in the auxiliary storage device to the main storage device.

In addition, the outdoor controller 27 includes an air conditioning load calculation unit 100. Specifically, as shown in FIG. 2, the air conditioning load calculation unit 100 includes an acquisition unit (acquisition unit) 105, a storage unit 101, a calculation unit (calculation unit) 102, and a determination unit (determination unit) 103. And a determination unit (determination means) 104.
The acquisition unit 105 acquires primary operation data related to the operation state of the air conditioner within a predetermined period.
The storage unit 101 stores the information acquired by the acquisition unit 105, and reads and outputs the stored information based on a read command.
The calculation unit 102 calculates secondary operation data for determining the air conditioning load based on the primary operation data related to the operation state of the air conditioning system 1 within a predetermined period, and stores the calculation result in the storage unit 101.

The determination unit 103 determines whether the model capability of the air conditioning system 1 is commensurate with the air conditioning load based on the secondary operation data based on the secondary operation data and the predetermined threshold value of the air conditioning load.
For example, the determination unit 103 calculates a ratio in which the outdoor unit 2 to which the plurality of indoor units 3A and 3B are connected is simultaneously used by the indoor unit 3, and whether the ratio obtained as a result of the calculation is less than a predetermined ratio. To determine whether the air conditioning load is met. Specifically, if the outdoor functional force is less than a predetermined ratio, it is determined that the outdoor functional force is excessive (unmatched) with respect to the indoor units 3A and 3B. It is determined that 3B is appropriate (matched).

As described above, whether or not the capacity of the outdoor unit 2 is excessive with respect to the indoor units 3A and 3B can be determined by setting a threshold for the ratio of the plurality of indoor units 3 used simultaneously.
The determination result obtained by the determination unit 103 is output to the determination unit 104.
When the determination unit 103 determines that the model capability of the air-conditioning system 1 does not match the air conditioning load based on the secondary operation data, the determination unit 104 determines the model capability corresponding to the air conditioning load. For example, the determination unit 104 makes the model capability of the outdoor unit 2 smaller than the model capability of the outdoor unit 2 currently used when the ratio obtained by the determination unit 103 is less than a predetermined rate.
In the present embodiment, the model capability is expressed as a rank, and it is assumed that the larger the rank value, the higher the model capability than the smaller rank value.

FIG. 3 shows an example of primary operation data and secondary operation data. Below, an example is given and demonstrated about the calculation method in which the calculation part 102 calculates secondary operation data based on primary operation data. Also, the formula written on the right side of each secondary operation data in FIG. 3 indicates which item of the primary operation data is used for calculation.
The primary operation data includes, for example, “outdoor unit power on time”, “outdoor unit operation time”, “outdoor unit compressor on time”, “connected indoor unit capacity”, “operating indoor unit capacity”, “thermo on indoor unit”. Capacity, outdoor unit inverter frequency, etc. That is, the primary operation data is information related to the operation state of the outdoor unit 2 and each of the indoor units 3A and 3B, is acquired from the outdoor controller 27 and the indoor controller 34, and is obtained during a predetermined period (for example, one year). The data is accumulated in the storage unit 101.

The calculation unit 102 reads the primary operation data stored in the storage unit 101, calculates the secondary operation data based on the following calculation formula, and stores the calculated secondary operation data in the storage unit 101. .
The secondary operation data includes, for example, “outdoor unit operation rate”, “outdoor unit compressor on rate”, “indoor unit simultaneous operation rate (average value)”, “indoor unit simultaneous thermo on rate (average value)”, “outdoor unit Machine inverter frequency average value "and the like, and these secondary operation data are calculated by the following equations (1) to (5).

(Outdoor unit operation rate) = (Outdoor unit operation time) / (Outdoor unit power-on time) (1)
(Outdoor unit compressor on rate) = (Outdoor unit compressor on time) / (Outdoor unit power on time) (2)
(Indoor unit simultaneous operation rate) = Integral {(Operating indoor unit capacity) / (Connected indoor unit capacity)} / (Outdoor unit operating time) (3)
(Indoor unit simultaneous thermo-on rate) = Integral {(Thermo-on indoor unit capacity) / (Connected indoor unit capacity)} / (Outdoor unit compressor on-time) (4)
(Outdoor unit inverter frequency average value) = Integral {(Outdoor unit inverter frequency)} / (Outdoor unit compressor on-time) (5)

Below, the effect | action of the air-conditioning load calculating part 100 using secondary operation data is demonstrated using FIGS. 1-4. Moreover, the numerical value described as each threshold value and predetermined rank is mentioned as an example, and is suitably adjusted and set from the application property, experience value, etc. of an air conditioning system.
When the air conditioning system 1 is operated, operation information is collected by the indoor controller 34 and the outdoor controller 27 and is output to the air conditioning load calculation unit 100. The operation information is acquired by the acquisition unit 105 and stored in the storage unit 101 as primary operation data. By reading the primary operation data and performing a predetermined calculation, the secondary operation data is calculated (generated), and the secondary operation data is stored in the storage unit 101.

  When an update operation such as replacement of the outdoor unit 2 of the air conditioning system 1 is performed, the air conditioning load of the connected indoor units 3A and 3B is appropriate for the outdoor unit 2 by a predetermined communication command or switch / button operation. When the process start instruction for determining whether or not the “indoor unit simultaneous operation rate” or “indoor unit simultaneous thermo-on rate” is read from the storage unit 101, the average value of each is calculated (FIG. 4). Step SA1).

  It is determined whether the “indoor unit simultaneous operation rate” (average value) or the “indoor unit simultaneous thermo-on rate” (average value) is equal to or greater than a first threshold (for example, 0.5). (Yes in step SA2 in FIG. 4), the outdoor unit 2 is appropriate for the indoor units 3A and 3B, and it is assumed that the outdoor unit 2 and the indoor units 3A and 3B match each other, and the process proceeds to step SA6. On the other hand, when it is less than the first threshold value (No in step SA2 in FIG. 4), there is a high possibility that the capacity of the outdoor unit 2 is excessive with respect to the operation of the indoor units 3A and 3B. It is determined that the machines 3A and 3B do not match, and then the outdoor unit inverter frequency average value is read (step SA3 in FIG. 4).

A ratio between the read “outdoor unit inverter frequency average value” and the maximum control frequency is calculated, and it is determined whether or not the value is equal to or greater than a second threshold (for example, 0.5). If it is equal to or greater than the second threshold value (Yes in step SA4 in FIG. 4), it is determined that the outdoor unit 2 is appropriate, and the process proceeds to step SA6 in FIG. If it is less than the second threshold, it is determined that the outdoor unit 2 currently used is likely to be excessive with respect to the operation of the indoor units 3A and 3B, and the capacity of the outdoor unit 2 is set to a predetermined rank (for example, 1 rank) is dropped (step SA5 in FIG. 4).
“Outdoor unit operation rate” or “outdoor unit compressor ON rate” is read out, and it is determined whether or not it is less than the third threshold value. If it is equal to or greater than the third threshold value (No in step SA7 in FIG. 4), this process is terminated. If it is less than the third threshold value (Yes in step SA7 in FIG. 4), the outdoor functional force is further set to a predetermined value. The rank (for example, one rank) is dropped (step SA8 in FIG. 4), and this process is terminated.

  As described above, according to the air conditioning system 1 and the model selection method and model selection program thereof according to the present embodiment, from the primary operation data obtained according to the operation of the air conditioning system 1 within a predetermined period. Secondary operation data is calculated to determine the air conditioning load of the indoor unit 3 and / or the outdoor unit 2, and the model capability of the air conditioning system 1 is determined based on the secondary operation data and a predetermined threshold value of the air conditioning load. When it is determined that the air conditioning load is not suitable based on the secondary operation data, the model capability corresponding to the air conditioning load is determined.

Since the secondary operation data is calculated and stored in this manner, the actual air conditioning load can be expressed more quantitatively and the air conditioning load can be quickly obtained by reading the secondary operation data.
Further, based on the actual operation data in the past (predetermined period), the model selection (capability selection) of the air conditioner suitable for actual operation can be performed.
The air conditioning load of each outdoor unit 2 can be determined based on the ratio of the indoor units 3 being used at the same time. If the model capability of the outdoor unit 2 is excessive, reducing the model capability leads to energy saving.

  In addition, in this embodiment, although demonstrated as providing the air-conditioning load calculating part 100 in the outdoor side controller 27, it is not limited to this. For example, the air conditioning load calculation unit 100 may be provided in another calculation device that is connected to the air conditioning system 1 so as to be able to exchange information, and the storage unit 101 and the calculation unit 102 of the air conditioning load calculation unit 100 are connected to each other. It may be provided in one arithmetic device, and the functions may be distributed and provided in a plurality of arithmetic devices such that the determination unit 103 and the determination unit 104 of the air conditioning load arithmetic unit 100 are provided in the second arithmetic device.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described. It differs from 1st Embodiment by the point which judges whether the indoor unit of the air conditioning system provided in this embodiment corresponds with the air-conditioning load of the air-conditioning object area | region arrange | positioned. About the air conditioning system of this embodiment, description is abbreviate | omitted about the point which is common in 1st Embodiment, and a different point is mainly demonstrated using FIG.1, FIG.2, FIG.5 and FIG.

In the present embodiment, the determination unit 103 determines whether the indoor units 3A and 3B are indoor units corresponding to the air conditioning load based on the current air conditioning loads in the air conditioning target areas of the indoor units 3A and 3B. .
Specifically, the determination unit 103 calculates the air conditioning load of each air conditioning target area of each of the indoor units 3A and 3B within a predetermined period based on the secondary operation data. It is determined whether or not the indoor units 3A and 3B being used cover excessively.
Whether “over” is covered is determined based on a predetermined threshold provided for each secondary operation data.

  When it is determined that the air conditioning load in the air conditioning target area is excessively covered by the indoor units 3A and 3B, the determining unit 104 determines that the model capability of the indoor units 3A and 3B is the room currently used. Make it smaller than the model capability of the machine 3A, 3B

FIG. 5 shows the primary operation data and the secondary operation data, but the contents overlapping with the primary operation data and the secondary operation data shown in the first embodiment are omitted. Also, the formula written on the right side of each secondary operation data in FIG. 3 indicates which item of the primary operation data is used for calculation, and a part of the primary operation data shown in FIG. Refers to.
The primary operation data includes, in addition to those described in the first embodiment, “operation time for each indoor unit”, “thermo-on time for each indoor unit”, “set temperature for each indoor unit”, and “for each indoor unit”. The room temperature "is stored in the storage unit 101.

  The calculation unit 102 reads primary operation data such as “operating time for each indoor unit”, “thermo-on time for each indoor unit”, “set temperature for each indoor unit”, and “room temperature for each indoor unit”. Further, the calculation unit 102 uses the following formulas (6) to (10) to calculate “operating rate for each indoor unit”, “thermo on rate for each indoor unit”, and “thermo on rate during operation for each indoor unit”. “A set temperature average value during operation for each indoor unit”, “average room temperature value during operation for each indoor unit”, and the like are calculated.

(Operation rate for each indoor unit) = (Operating time for each indoor unit) / (Outdoor unit power on time) (6)
(Thermo-on rate for each indoor unit) = (Thermo-on time for each indoor unit) / (Outdoor unit power-on time) (7)
(Thermo-on rate during operation for each indoor unit) = (Thermo-on time for each indoor unit) / (Operating time for each indoor unit) (8)
(Set temperature average value during operation for each indoor unit) = Integral (Set temperature for each indoor unit during operation) / (Operating time for each indoor unit) (9)
(Average room temperature during operation for each indoor unit) = Integral (Room temperature for each indoor unit during operation) / (Operation time for each indoor unit) (10)

The secondary operation data calculated in this way is stored in the storage unit 101.
Below, the effect | action of the air-conditioning load calculating part 100 which concerns on this embodiment using secondary operation data is demonstrated using FIG. Moreover, the numerical value described as each threshold value or a predetermined number is mentioned as an example, and is suitably adjusted and set from the application property, experience value, etc. of the air conditioning system 1. FIG. In addition, here, the cooling operation will be described as an example.
When the air conditioning system 1 is operated, operation information is collected by the indoor controller 34 and the outdoor controller 27 and is output to the air conditioning load calculation unit 100. The operation information is acquired by the acquisition unit 105 and stored in the storage unit 101 as primary operation data. By reading the primary operation data and performing a predetermined calculation, the secondary operation data is calculated (generated), and the secondary operation data is stored in the storage unit 101.

  When performing an update operation such as replacement of the indoor units 3A and 3B of the air conditioning system, whether or not the air conditioning load is appropriate for the air conditioning target area of the indoor units 3A and 3B by a predetermined communication command or switch / button operation 6 is read out from the storage unit 101 (steps in FIG. 6). “Set temperature average value during operation for each indoor unit” and “Room temperature average value during operation for each indoor unit” SB1). It is determined whether or not “(average temperature setting during operation for each indoor unit)> (average room temperature value during operation for each indoor unit)” is satisfied, and (average temperature setting during operation for each indoor unit). Is greater (Yes in step SB2 in FIG. 6), it is determined that the capacity of the indoor units 3A and 3B is sufficient, and (the thermo-on rate during operation for each indoor unit) is read (FIG. 6). Step SB3). It is determined whether (the thermo-on rate during operation for each indoor unit) is equal to or greater than a fourth threshold (for example, 0.5) (Yes in step SB4 in FIG. 6). Is determined to be valid, and the process proceeds to step SB6 without changing the rank.

On the other hand, when (the set temperature average value during operation for each indoor unit) is smaller in step SB2, it is determined that the indoor functional force is insufficient, and the air conditioning system 1 is performed at the time of new introduction or the like. In this case, the model selection flow provided separately from the present invention is executed again to obtain the calculated air conditioning load value at the set temperature average value, and the capability rank is reacquired (step SB5 in FIG. 6).
In step SB4, when it is less than the fourth threshold value (No in step SB4 in FIG. 6), it is determined that the capacity of the indoor unit 3 is excessive, and the air conditioning system is performed at the time of new introduction or the like. The above-described model selection flow to be used is executed, the calculated air conditioning load value at the set temperature average value is obtained, and the capability rank obtained as a result is reacquired (step SB5 in FIG. 6).

  (Operation rate for each indoor unit) or (Thermo-on rate for each indoor unit) is read (step SB6 in FIG. 6). It is determined whether (operating rate for each indoor unit) or (thermo-on rate for each indoor unit) is less than a fifth threshold (for example, 0.1). If it is equal to or greater than the fifth threshold value (No in step SB7 in FIG. 6), this process ends. If it is less than the fifth threshold value (Yes in step SB7 in FIG. 6), it is estimated that the indoor unit 3 is used less frequently and is not being used almost. Then, the air conditioning load calculation value is multiplied by a predetermined number (for example, 0.9) smaller than 1 (step SB8 in FIG. 6), and this process is terminated.

  As described above, according to the present embodiment, the air conditioning load for each indoor unit can be determined based on the air conditioning load in the air conditioning target area, and if the model capability of the indoor unit 3 is excessive, the model capability is reduced. It can lead to energy saving.

[Modification]
In the said embodiment, although demonstrated using the operation | movement flow of the air-conditioning load calculating part 100 at the time of air_conditionaing | cooling operation, it reads as follows at the time of heating operation.
In step SB2 of FIG. 6, it is determined whether or not (set temperature average value during operation for each indoor unit) <(average room temperature value during operation for each indoor unit) "is satisfied. Is smaller (Yes in step SB2 in FIG. 6), it is determined that the capacity of the indoor units 3A and 3B is sufficient, and the (thermo-on rate during operation of each indoor unit) is It is read (step SB3 in FIG. 6).

When (the set temperature average value during operation for each indoor unit) is larger (No in step SB2 in FIG. 6), it is determined that the indoor functional force is insufficient, and the air conditioning system 1 is newly introduced. The model selection flow provided separately from the present invention is used to obtain the air conditioning load calculated value at the set temperature average value, and the capability rank obtained as a result is reacquired (see FIG. 6). Step SB5).
In other places, the same steps are performed.

  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. For example, the first embodiment and the second embodiment may be combined.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Outdoor unit 3A, 3B Indoor unit 27 Outdoor side controller 34 Indoor side controller 100 Air-conditioning load calculating part 101 Storage part 102 Calculation part (calculation means)
103 determination unit (determination means)
104 Determination unit (determination means)
105 Acquisition unit (acquisition means)

Claims (7)

An air conditioner including an indoor unit and an outdoor unit,
Calculation means for calculating secondary operation data for determining an air conditioning load based on primary operation data relating to the operating state of the air conditioner within a predetermined period;
An air conditioner comprising storage means for storing the secondary operation data. Based on the secondary operation data and a predetermined threshold value of the air conditioning load, a determination unit that determines whether the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data;
And determining means for determining a model capability corresponding to the air conditioning load when the determination unit determines that the model capability of the air conditioner does not match the air conditioning load based on the secondary operation data. The air conditioning apparatus according to claim 1. When a plurality of indoor units constituting a common refrigerant circuit are provided in the air conditioner,
The calculation means calculates a ratio in which a plurality of the indoor units are used simultaneously,
The determination unit determines whether the ratio is less than a predetermined ratio,
3. The air conditioner according to claim 2, wherein, when the determining unit determines that the ratio is less than a predetermined ratio, the model capacity of the outdoor unit is made smaller than the model capacity of the outdoor unit being used. . The calculation means calculates an air conditioning load of an air conditioning target area for each indoor unit within the predetermined period as the secondary operation data based on the primary operation data,
The determination means determines whether the air conditioning load of the air conditioning target area is excessively covered by the indoor unit being used,
When it is determined that the air-conditioning load in the air-conditioning target area is excessively covered by the indoor unit, the determining unit determines that the model capability of the indoor unit is the model capability of the indoor unit being used. The air conditioner according to claim 2 or 3, wherein the air conditioner is made smaller. Obtaining means for obtaining primary operation data relating to the operating state of the air conditioner within a predetermined period;
Calculation means for calculating secondary operation data for determining an air conditioning load based on the primary operation data;
A computing device comprising storage means for storing the secondary data. A method for selecting a model of an air conditioner including an indoor unit and an outdoor unit,
A calculation step of calculating secondary operation data for determining an air conditioning load based on primary operation data related to the operating state of the air conditioner within a predetermined period;
A storing step for storing the secondary operation data;
Based on the secondary operation data stored in the storage step and a predetermined threshold value of the air conditioning load, whether or not the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data. A determination step for determining;
A determination step of determining a model capability corresponding to the air conditioning load when the determination step determines that the model capability of the air conditioner does not match the air conditioning load based on the secondary operation data. Air conditioner model selection method. A model selection program for an air conditioner including an indoor unit and an outdoor unit,
A first process of calculating secondary operation data for determining an air conditioning load based on primary operation data relating to the operating state of the air conditioner within a predetermined period;
A second process for storing the secondary operation data;
Whether the model capability of the air conditioner is commensurate with the air conditioning load based on the secondary operation data based on the secondary operation data stored in the second process and the predetermined threshold value of the air conditioning load. A third process for determining
A fourth process for determining a model capability corresponding to the air conditioning load when it is determined by the third processing that the model capability of the air conditioner does not match the air conditioning load based on the secondary operation data; Air conditioner model selection program that causes a computer to execute

Images