KR100819845B1 - Method for calculating power consumption of multi-type system and multi-type system therefor - Google Patents

Abstract

A power consumption calculating method of a multi-type system for each room and the multi-type system are provided to calculate the power consumption amount used in each room and to make an algorism simple and to decrease calculation load by calculating power consumption for each room on the basis of information about the state of outdoor and indoor devices stored in a data storing unit or state information received through the communication network. A multi-type system is composed of an outdoor device(30); at least one indoor device(40) connected to the outdoor device through the communication network; a digital watt hour meter(20) connected with the outdoor device to measure the power consumption amount consumed in operating the outdoor and indoor devices; and a calculation device(50) for subdividing the total power consumption amount measured by the digital watt hour meter, into groups set in advance and determining the power consumption amount for each group on the basis of power consuming elements included in the subdivided groups. The calculation device computes power consumption for each room by using the determined power consumption amount and the mass flow rate for each room. The preset groups include a first group consuming power in common; a second group consuming power distributable to each room; and a third group consuming distributable power in proportion to the mass flow rate for each room. The third group includes a compressor and an outdoor fan.

Description

Calculation method of actual integrated power of multi-type system and its multi-type system {method for calculating power consumption of multi-type system and multi-type system therefor}

1 is an overall block diagram of a multi-type system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating the calculation device shown in FIG. 1; FIG.

3 is a view for explaining the outdoor unit and the indoor unit shown in FIG.

4 is a flowchart illustrating a method for calculating the actual integrated power of a multi-type system according to an exemplary embodiment of the present invention.

5 is an operation flowchart for explaining the integrated power amount calculation subroutine of FIG.

<Explanation of symbols for the main parts of the drawings>

10: power supply 20: digital power meter

30: outdoor unit 40: indoor unit

50: calculation device 51: information input unit

52: receiver 53: display

54: data storage unit 55: central processing unit

60: computer

The present invention relates to a method for calculating integrated power per room of a multi-type system, and the multi-type system. Particularly, the total power consumption is subdivided into elements, and the integrated power of each room can be accurately calculated based on the power consumption of each element and the refrigerant flow rate of each room. The present invention relates to a method for calculating the actual integrated power of a multi-type system and a multi-type system thereof.

Recently, as the use of air conditioners has increased significantly, air conditioners have been installed in each room in a home or in an office in a building.

These air conditioners can be classified into a single type system suitable for air conditioning in a small indoor room and a multi type system installed in a large building for common management.

First, a conventional air conditioner is an indoor unit installed in the interior room, the outdoor unit connected to the indoor unit and circulating the refrigerant is installed in the outdoor can be individually controlled independently for each room.

Since the single type system is installed / operated independently in each room in a small building that does not require common management, user input of control commands is performed through an indoor unit installed in each room.

On the other hand, in the multi-type system, a plurality of indoor units are installed in each room, and a few outdoor units connected to the plurality of indoor units are installed. The outdoor unit controls the distribution and circulation of the refrigerant circulated through the indoor unit according to the state information of the indoor unit.

Such a multi-type system has an economical advantage in that the initial installation cost is reduced and the installation space is reduced in terms of the management of the entire building rather than a normal air conditioner, but due to the characteristics of the air conditioner that performs air conditioning by circulating refrigerant, Compared to

In such a multi-type system, since the power consumption of each room actually used independently cannot be accurately measured, there is a problem in that the electric charge used in each room cannot be accurately calculated. That is, since the outdoor unit operates according to the total indoor load plus the indoor load reflecting the operation mode and operation conditions of each room, it is impossible to measure the power consumption of the outdoor unit independently for each room. none.

Accordingly, the user may feel uncomfortable due to the fee charged in a lump even if the air conditioner is rarely used.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and the total power consumption is subdivided into elements so that the integrated power amount of each room can be accurately calculated based on the power consumption of each element and the refrigerant flow rate of each room.

Multi-type system according to an embodiment of the present invention for achieving the above object is an outdoor unit; At least one indoor unit connected to the outdoor unit through an information communication network; A digital power meter connected to the outdoor unit for measuring power consumption consumed when the outdoor unit and the indoor unit operate; And an estimating device for subdividing the total electric power consumption measured by the digital electricity meter by each element to determine the electric power consumption for each subdivided element, and using the determined electric power consumption and the refrigerant flow rate of each chamber, to calculate the integrated electric power of each chamber. Characterized in that.

Preferably, the estimating apparatus comprises: a first group of consuming power in common among the total power consumption, a second group consuming power that can be distributed to each chamber, and a third group consuming power that can be distributed in proportion to the refrigerant flow rate It is characterized in that it is set to be subdivided into.

More preferably, the third group includes a compressor and an outdoor fan.

Even more preferably, the calculating device includes a data storage unit for storing variables necessary for calculating the integrated power amount of each chamber for one cycle, and among the variables stored in the data storage unit, the rated capacity at the restart, the total integrated power quantity, and each chamber It is characterized by initializing the variables that specify the integrated power amount of.

Still more preferably, the calculating device performs an interface with the outside, and provides the accumulated power amount of each chamber accumulated up to the settlement point to the outside.

Even more preferably, the calculation device, if there is a difference in the sum of the total power consumption and the total power consumption of each room, the power consumption corresponding to the difference is proportional to the power consumption of each room, characterized in that .

In addition, the actual integrated power estimation method of the multi-type system according to an embodiment of the present invention comprises the steps of: subdividing the total power consumption measured by the digital electricity meter for each element to determine the information on the power consumption for each element subdivided; And calculating an integrated power amount of each chamber by using the determined power consumption and a mass flow rate of each chamber.

Preferably, the calculating step includes calculating a total power consumption for one period; Calculating standby power consumption; Calculating a distribution power consumption by subtracting the standby power consumption from the calculated total power consumption; Calculating a total distributed power consumption by subtracting power consumption of a power consumption element belonging to a predetermined group from the calculated distributed power consumption; Calculating a refrigerant flow rate of each chamber and a total refrigerant flow rate of the chamber according to whether a specific mode is operated during a heating operation; And calculating the integrated power amount of each chamber by using the calculated total power consumption amount, the refrigerant flow rate of each chamber, and the total refrigerant flow rate of the chamber.
Here, the specific mode is a mode in which the total capacity requirement of the room can be determined as '0', and the indoor unit fan is stopped. For example, in order to prevent cold air discharge of the indoor unit, the indoor unit fan is stopped during the defrosting operation of the outdoor unit to solve the buildup of the outdoor unit while the indoor unit fan is stopped.

More preferably, the refrigerant flow rate of each chamber is determined as 0 when a specific mode is operated during the heating operation.

Even more preferably, after the calculating step, performing an interface with the outside; And providing an integrated power amount of each room accumulated up to the point of settlement to the outside.

Even more preferably, after the calculating step, comparing the sum of the total power consumption and the total power of each room at the time of settlement, determining whether there is a difference; And if there is a difference, calculating the integrated power amount of each room by distributing the power consumption corresponding to the difference in proportion to the power consumption of each room.

In addition, the actual integrated power estimation method of the multi-type system according to an embodiment of the present invention includes the steps of calculating the total power consumption for one period; Calculating standby power consumption; Calculating a distribution power consumption by subtracting the standby power consumption from the calculated total power consumption; Calculating a total distributed power consumption by subtracting power consumption of a power consumption element belonging to a predetermined group from the calculated distributed power consumption; Calculating a refrigerant flow rate of each chamber and a total refrigerant flow rate of the chamber according to whether a specific mode is operated during a heating operation; And calculating the integrated power amount of each chamber by using the calculated total power consumption, the refrigerant flow rate of each chamber, and the total refrigerant flow rate of the chamber.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The multi-type system according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 as follows.

1 is an overall block diagram of a multi-type system according to an exemplary embodiment of the present invention, FIG. 2 is a block diagram illustrating a calculation device shown in FIG. 1, and FIG. 3 is a block diagram illustrating an outdoor unit and an indoor unit shown in FIG. 1. It is a figure for following.

Referring to FIG. 1, the multi-type system according to the present invention includes at least one indoor unit 40 installed in each room of a building for air conditioning, and an outdoor unit shared with the indoor unit 40 to control the circulation of the refrigerant ( 30), the digital power meter 20 for measuring the power consumption consumed when the outdoor unit 30 and the indoor unit 40 are operated, and the total power consumption measured by the digital power meter 20 is subdivided by element. It is configured to include a calculation device 50 for determining the power consumption for each element, and using the determined power consumption and the refrigerant flow rate (mass flow rate) of each chamber to calculate the integrated power amount of each chamber. Here, the determined power consumption is a power consumption that sums up standby power consumption to be described later and power consumption belonging to a preset group (that is, the second group).

Reference numeral 10 is a power source.

In addition, the multi-type system further includes a computer 60 connected to the estimator 50. At this time, the computer 60 periodically receives the information stored in the calculation device 50 and stores it in a memory (not shown).

The indoor unit 40 is not limited to its type, such as ceiling type, wall-mounted type, standing type, etc., and may have different power consumption according to the type or model of the indoor unit 40 to be installed.

In particular, the indoor unit 40 differs in the amount of power consumed during operation depending on the type, function, model, installation year, frequency of use, and the like.

The outdoor unit 30 is connected to at least one indoor unit 40 to control the circulation of the refrigerant so that air conditioning of each chamber is achieved.

In addition, the outdoor unit 30 is connected to the digital electricity meter 20 and the power line A, which measures the amount of power consumed when the air conditioner is operated for a predetermined period of time, and the corresponding power is supplied to the outdoor unit 30.

Referring to the outdoor unit 30 and the indoor unit 40 as described above, the compressor is the most important power consumption factor, the operation of the compressor is determined by the indoor load reflecting the operation mode and the operating conditions of each room.

In the case of several such compressors, as shown in FIG. 3, the compressor output is controlled by adjusting the number of compressors to be operated according to the total indoor load. same.

Since the configurations of the outdoor unit 30 and the indoor unit 40 shown in FIG. 3 are known, detailed descriptions thereof will be omitted.

The digital electricity meter 20 is connected not only to the outdoor unit 30 but also to at least one indoor unit 40 through a power line A, so that the corresponding power is supplied to the indoor unit 40.

The calculation device 50 determines the subdivided power consumption by subdividing the total power consumption measured by the digital electricity meter 20 by the power consumption elements for a predetermined period (for example, 40 seconds).

In this case, the subdivided power consumption element is divided into a first group that consumes power in a common manner, a second group that consumes power that can be distributed to each room, and a third group that consumes power that can be distributed in proportion to the refrigerant flow rate of each room. Each element belongs.

The power consumption for the first group and the second group is determined by the power consumption of the power consumption element stored in the data storage unit (54 of FIG. 2), or the state information of the indoor unit received from each indoor unit through the information communication network (B). The power consumption of the corresponding power consumption element is determined by using the power consumption for the third group using the refrigerant flow rate of each chamber.

First, the power consumption elements belonging to the first group include the indoor unit EXV, the indoor unit control board and display, the communication line, the outdoor unit control board, Outdoor unit EXV, solenoid valve, four way valve, crankcase heater and the like.

Power consumption elements belonging to the second group include an indoor fan (Indoor fan), louver (Auto Swing On mode), indoor unit drain pump (cooling, dehumidification, defrost mode) and the like.

The power consumption elements belonging to the third group include compressors, outdoor fans, and power consumption elements in which power consumption increases among the power consumption elements belonging to the first group (for example, indoor unit control boards and outdoor unit control boards). to be.

As described above, when the elements are subdivided by elements and the amount of electric power used by the subdivided elements is determined, the calculation device 50 calculates the integrated electric power of each chamber by using the determined power consumption and the refrigerant flow rate of each chamber. At this time, the calculation device 50 is connected to the digital power meter 20, the outdoor unit 30 and at least one indoor unit 40 through an information communication network to transmit and receive a signal.

The calculation device 50 is further described, the calculation device 50 includes an information input unit 51 for inputting information so that a service related to the present invention can be performed, and a receiving unit 52 for receiving information related to the present invention. A display unit 53 for displaying information related to the present invention, a data storage unit 54 for storing software for calculating an integrated power amount of each room based on the information related to the present invention, and the information, It comprises a central processing unit 55 for calculating the integrated power amount of each room per cycle.

The information input unit 51 is a means for inputting information necessary for calculating the integrated power amount of each chamber. In particular, the information input unit 51 receives the outdoor unit, the product information of each indoor unit, status information and the like by the manager at the time of system installation or power failure or troubleshooting.

In addition, the information input unit 51 may receive a control command for backing up the information stored in the data storage unit 54 to the computer 50 at the request of an administrator.

The receiver 52 receives the state information of the outdoor unit 30 and the at least one indoor unit 30, and provides the received state information to the central processing unit 55. Accordingly, the manager can monitor the total power consumption, power consumption of the outdoor unit and the indoor unit in real time.

The data storage unit 54 stores the product information (for example, power consumption corresponding to at least one set value), the state information, and the information input unit 51 of the outdoor unit 30 and the at least one indoor unit 40. The information received by the information, the information received from the receiving unit 52 is stored. In addition, information received from the computer 60 connected through the information communication network is stored.

In addition, the data storage unit 54 stores information as shown in Table 1 below. This information is the basic information for calculating the refrigerant flow rate directly involved in cooling or heating. That is, the refrigerant flow rate is calculated by the opening degree and the pressure of the indoor unit EXV.

Table 1 below shows the relationship between valve opening, flow rate and pressure through calibration.

Dog Road 1 Dog degree 2 ... Pressure 1 Flow rate 11 Flow rate 12 ... Pressure 2 Flow rate 12 Flow rate 22 ... . . . ...

In the present embodiment, it is described as calculating the refrigerant flow rate using the information in Table 1, but the present invention is not limited thereto. In fact, when the pressure is constant, if the relationship between the refrigerant flow rate and the valve opening degree is linear, the refrigerant flow rate may be calculated using one row of Table 1 as a number.

That is, the present invention determines the refrigerant flow rate based on the pressure and the valve opening value, and calculates the power consumption by the determined refrigerant flow rate.

The central processing unit 55 calculates the distribution power consumption by subtracting the standby power consumption from the total power measured by the digital electricity meter 20 for a preset period, and subtracts the power consumption from the calculated distribution power consumption to calculate the total power consumption. Calculate

At this time, the standby power consumption is the sum of the power consumption of the power consumption elements belonging to the first group described above, the power consumption is calculated using a value previously stored in the data storage unit 54, or at least the outdoor unit 30 and at least It is calculated using the state information received from one indoor unit 40.

The power consumption subtracted from the distributed power consumption is a sum of the power consumptions of the power consumption elements belonging to the second group, and the distributed power consumption is also stored in the data storage 54 in the same manner as the standby power described above. It is calculated using the state information received from the outdoor unit 30 and the indoor unit 40 through the information communication network.

The central processing unit 55 calculates basic information (i.e., refrigerant flow rate of each chamber) for distributing the calculated total distribution power consumption to each chamber, and calculates the total refrigerant flow rate of the chamber by adding the calculated refrigerant flow rates of the chambers. Calculate At this time, the refrigerant flow rate of each chamber is the basic information for calculating the power consumption of the power consumption element belonging to the third group described above, and given the valve opening degree and the indoor unit EXV inlet pressure as shown in Table 1 above. Calculated through interpolation.

Here, the valve opening degree can be known when the position of the step motor is given, and when the valve opening degree and pressure are given, the flow rate of the refrigerant to the indoor unit 40 can be calculated. At this time, the outdoor unit control board has information about the position of the stepper motor.

The central processing unit 55 calculates the total power consumption of each chamber by using the following equation (1) for the total distribution power consumption, the total refrigerant flow rate and the refrigerant flow rate of each chamber.

ATPC _i = ATPC _i + dATPC * mdot _i / mdot

Here, _i is an ATPC integrated electric power of each chamber _(i), dATPC is the total amount of power consumption distribution, mdot _i is the flow rate of the refrigerant in each room _(i), mdot is the total coolant flow.

The central processing unit 55 calculates the integrated power amount of each room by a predetermined period and accumulates the integrated power amount of each room until the point of time of settlement. At this time, the central processing unit 55 interfaces with the outside (for example, the computer 60), and provides the accumulated power amount of each room accumulated until the settlement point to the outside to accurately calculate the electric charge of each room. To be able.

In addition, when there is a difference between the total power consumption and the integrated power amount of each room at the time of settlement, the central processing unit 55 calculates the integrated power amount of each room in proportion to the power consumption of each room. .

On the other hand, the central processing unit 55 initializes the variables that specify the rated capacity, the total integrated power amount and the integrated power amount of each room during restart among the variables used for calculating the integrated power amount during a predetermined period.

Referring to FIG. 4, a method for calculating an actual integrated power of a multi-type system having such a configuration is as follows.

The central processing unit 55 of the calculating device 50 includes information on the outdoor unit 30 and at least one indoor unit 40, and basic information for calculating the refrigerant flow rate (valve opening degree, pressure and flow rate as shown in Table 1 above). Is stored in advance in the data storage unit 54 (S100).

Next, the central processing unit 55 subdivides the power consumption elements by elements (S200). At this time, the subdivided power consumption elements are power consumption elements belonging to the first to third groups as described above.

Next, the central processing unit 55 performs a subroutine for calculating the integrated power amount of each room (S300 of FIG. 4).

Referring to FIG. 5, the subroutine for calculating the integrated power amount of each room is described in detail. The central processing unit 55 receives the power consumption measured from the digital power meter 20 (S301).

Next, the central processing unit 55 determines whether a predetermined period (for example, 40 seconds) has elapsed (S303).

As a result of the determination in step S303, if the predetermined period has not elapsed, the central processing unit 55 moves the process to step S301 described above.

As a result of the determination in step S303, when the predetermined period has elapsed, the central processing unit 55 calculates the total power consumption during the predetermined period (S305).

That is, the central processing unit 55 calculates the total power consumption for a predetermined period by subtracting the power consumption before one sample from the total power consumption measured by the digital wattmeter 20.

Next, the central processing unit 55 calculates the standby power consumption by adding up the power consumption of the power consumption elements belonging to the first group (S307). At this time, the calculated standby power consumption is uniformly distributed for each room.

The power consumption of the power consumption element belonging to the first group uses the set values from the data storage unit 54 storing the set values for the outdoor unit 30 and the at least one indoor unit 40, or the outdoor unit 30 and It is determined using the state information received from the at least one indoor unit 40 and a setting value corresponding to the state information.

Next, the central processing unit 55 calculates the distribution power consumption by subtracting the standby power consumption from the calculated total power consumption (S309).

Next, the central processing unit 55 calculates the total distributed power consumption by subtracting the power consumption of the power consumption elements belonging to the second group from the calculated distributed power consumption (S311). In this case, the calculated total distributed power consumption is distributed in proportion to the power consumption of the power consumption elements belonging to the third group.

The power consumption of the power consumption elements belonging to the second group is determined in the same manner as the power consumption of the power consumption elements belonging to the first group described above.

Next, the central processing unit 55 determines whether or not the heating operation (S313).

As a result of the determination in step S313, when not in the heating operation, the central processing unit 55 moves the process to step S314 described later.

As a result of the determination in step S313, when the heating is in operation, the central processing unit 55 determines whether the specific mode is in operation (S315).

As a result of the determination in step S315, when the heating operation is performed and the specific mode is in operation, the central processing unit 55 determines the total refrigerant flow rate of the chamber as 0 (S317).

As a result of the determination in step S315, when the heating operation is performed and the specific mode is not in operation, the central processing unit 55 calculates the refrigerant flow rate of each chamber (S314). At this time, the refrigerant flow rate is calculated by the interpolation method based on the valve opening degree and the indoor unit XV inlet pressure stored in the data storage unit 54.

Next, the central processing unit 55 calculates the total refrigerant flow rate of the chamber by adding the calculated refrigerant flow rates of the chambers (S316).

Next, the central processing unit 55 calculates the total distributed power consumption calculated by the above-described step S311, S314, S315 or S316, the total refrigerant flow rate of the chamber and the refrigerant flow rate of each chamber by using Equation 1 described above. Calculate the amount of integrated power of (S317).

Next, the central processing unit 55 determines whether it is time to settle the electricity bill (S319).

As a result of the determination in step S319, when the electric charge is not settled, the central processing unit 55 accumulates the accumulated power amount of each chamber, the total refrigerant flow rate of the chamber, and the refrigerant flow rate of each chamber, and stores the data in the data storage unit 54. (S320), the process moves to step S301 described above.

As a result of the determination in step S319, when the electricity bill is settled, the central processing unit 55 determines the amount of integrated power of each room to be used at the time of settlement (S321).

4 again, the central processing unit 55 provides the accumulated power amount of each room determined to be accumulated until the settlement point (S400).

By doing so, it is possible to accurately calculate the power consumption used in each room, and to impose an electric charge evenly on the calculated power consumption.

In the present embodiment, the calculation device calculates and provides an integrated power amount for each room, but the present invention is not limited thereto, and the information and software stored in the data storage unit of the calculation device are in a computer or other digital device. In addition, the integrated power of each room can be sufficiently calculated through the device. However, it should be possible to receive the information necessary to calculate the amount of integrated power for each identification.

In addition, the present embodiment has been described in the order of calculating the total power consumption after calculating the standby power consumption and the distributed power consumption, the order can be changed according to the implementation method.

In addition, the present embodiment has been described as determining and providing an integrated power amount of each room to be used at the time of settlement of electricity charges, but the present invention is not limited thereto, and may be provided at any time as required by an administrator. to be.

The power consumption elements belonging to the first group described above are as follows.

The indoor unit XV is driven by a stepping motor, which is requested by the producer when purchasing data on the power consumption in a hold state and the power consumption in each step, or measured by experiment.

Since indoor unit EXV can allocate power consumption to a specific room, distribution of integrated power seems to be simple, but the relationship with other rooms is excluded in that indoor unit EXV is engaged with the compressor to control the actual temperature of the room. There is an aspect that requires distribution because it cannot.

The indoor unit control board and the display are the same as the outdoor unit control board, but since they are arranged in each room, it is preferable to distribute the power consumption to each room.

In the communication line, the power usage of the communication line varies depending on the communication load. Strictly, the power usage should be distributed according to the frequency of use of the communication line. However, in the multi-type system, it is impossible to measure the load of the communication line and distribute it to each room in terms of cost.

The outdoor unit control board has a large difference in power consumption depending on the operating state. In addition, various sensors are connected to the outdoor unit control board of the multi-type system, and the power consumption for reading the sensor signal is included in the power consumption of the outdoor unit control board. However, it is impossible to measure the power consumption of the outdoor unit control board in real time. Therefore, the power consumption (“standby power consumption”) when the outdoor unit control board does not process data is distributed equally to all rooms, but the excess power consumption (ie, power consumption-standby) during the outdoor unit control board processing data. Power consumption = excess power consumption) is preferably distributed to users who actually operate the system.

The outdoor unit EXV is driven by a stepping motor. It is required by the producer when purchasing data on the power consumption in the hold state and the power consumption per step, or measured by experiment. Just like compressors, power consumption cannot be allocated to specific rooms, so there is a need for standards and strategies for distributing power.

Solenoid valves and four-way valves are on-off valves and consume little power except when the valve is opened or closed. Data on power consumption can be obtained by requesting the producer or by experimenting when purchasing by valve state. The power consumption can be distributed on the same principle as outdoor unit EXV.

The crankcase heater may contain refrigerant in the compressor oil when the compressor is not running, in which case the oil viscosity dilutes. When the compressor starts up in this state, the oil film is broken, the oil level is lowered, and the compressor is worn and durability problems are caused. In order to prevent this, when the compressor is not operating, turning on the crankcase heater, the compressor temperature rises, and the refrigerant does not mix in the compressor oil. Power consumption can be distributed evenly among all rooms, regardless of system usage.

Next, the indoor unit fan of the power consumption belonging to the second group is controlled to High, Medium, Low, OFF, or Auto speed.

The power consumption of the indoor unit fan can be measured by requesting producers or experimenting with data on power consumption at each setting of high, medium, low, and OFF when a fan is purchased. In the case of auto speed, the operation actually selects one of the manual settings, so only the power consumption of each setting of high, medium, low, and OFF is needed. Like indoor unit EXV, power consumption can be allocated to a specific room, so the distribution of power consumption is simple.

The louver's vertical airflow is controlled by a stepping motor and the horizontal airflow is controlled by a sweep AC motor. The power consumption by the louver has a meaningful value only in the Auto Swing On mode, and the data on the power consumption is obtained by requesting from the producer at the time of purchase or by experimenting. The louver position control is decided by the remote control by the user of each room, so the power consumption can be allocated to a specific room, and the power consumption is distributed to each room.

The indoor unit drain pump operates to discharge the water generated from the indoor unit to the outside, and is a power consumption factor that is always turned on in the cooling, dehumidification, and defrosting modes instead of being turned on during heating.

The power consumption by the drain pump varies depending on the water level, but the power consumption is distributed based on when it is operated without water, and the power consumption increased due to the amount of water is proportional to the refrigerant flow rate in the same way as the compressor. To distribute.

Data on the power consumption of the drain pump when operating without water can be measured by the producer or by experimentation.

Among the power consumption elements belonging to the third group, the compressor operates according to the total indoor load plus the indoor load of each chamber, and the outdoor unit fan is controlled to high, medium, low, and off. The power consumption of the outdoor unit fan can be measured by requesting data about power consumption at each setting of high, medium, low, and OFF when the fan is purchased or by experiment. Since power consumption cannot be allocated to a specific room, standards and strategies for distributing power consumption, like compressors, are needed.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

According to the present invention as described above by subdividing the total power consumption by the power consumption elements by the power consumption consumed by each subdivided element and the refrigerant flow rate of each room, by calculating the integrated power amount of each room, the power used in each room It is also possible to accurately estimate the amount of electricity used and to impose a fair charge on the electricity bill. Accordingly, there is also an effect that can give the user a confidence in the electricity bill.

In addition, according to the present invention as described above, by using the state information in the outdoor unit and at least one indoor unit stored in the data storage unit, or by using the state information received through the information communication network to calculate the amount of integrated power of each room, the algorithm is simple It also has the effect of reducing the computational load. In addition, it is possible to minimize the cost burden because it is possible to calculate the exact amount of integrated power per room without installing a separate expensive device.

Further, according to the present invention as described above, by storing the variables necessary for calculating the integrated power amount for one period in the data storage, information that can recover the state before the system interrupt from the calculation device when restarting the multi-type system due to power failure or failure Since it can be received, there is also an effect that can perform a stable power control.

Claims (12)

In a multi-type system for calculating integrated power, Outdoor unit; At least one indoor unit connected to the outdoor unit through an information communication network; A digital power meter connected to the outdoor unit for measuring power consumption consumed when the outdoor unit and the indoor unit are operated; And The total power consumption measured by the digital electricity meter is subdivided into preset groups to determine the power consumption of each group based on the power consumption elements belonging to the subdivided group, and the determined power consumption and the refrigerant flow rate of each room Including a calculating device for calculating the amount of integrated power, The preset group includes a first group jointly consuming power, a second group consuming power that can be distributed to each chamber, and a third group consuming power that can be distributed in proportion to the refrigerant flow rate of each chamber. Multi-type system characterized in that. delete The method of claim 1, wherein the third group is A multi-type system comprising a compressor, an outdoor fan. The method of claim 1, wherein the calculating device It includes a data storage unit for storing the variables necessary to calculate the total power of each room for one period, Multi-type system, characterized in that for resetting among the variables stored in the data storage unit, the rated capacity, the total integrated power amount, the integrated power amount of each room. The method of claim 1, wherein the calculating device Multi-type system, characterized in that by performing the interface with the outside, the accumulated power of each room accumulated up to the point of settlement to the outside. The method of claim 5, wherein the calculating device When there is a difference in the sum of the total power consumption and the total power consumption of each room at the time of settlement, the multi-type system, characterized in that the power consumption corresponding to the difference is distributed in proportion to the power consumption of each room. An integrated power estimation method for a multi-type system including an outdoor unit, at least one indoor unit connected to the outdoor unit through an information communication network, and a digital power meter and a calculating device for measuring power consumption consumed when the outdoor unit and the indoor unit are operated. Subdividing the total power consumption measured by the digital power meter into a predetermined group to determine power consumption for each group based on power consumption elements belonging to the divided group; And Computing the integrated power amount of each chamber by using the determined power consumption and the mass flow rate of each chamber, The preset group includes a first group jointly consuming power, a second group consuming power that can be distributed to each chamber, and a third group consuming power that can be distributed in proportion to the refrigerant flow rate of each chamber. Real-time integrated power calculation method of a multi-type system, characterized in that. The method of claim 7, wherein the calculating step Calculating total power consumption for one cycle; Calculating standby power consumption; Calculating a distribution power consumption by subtracting the standby power consumption from the calculated total power consumption; Calculating a total distributed power consumption by subtracting power consumption of a power consumption element belonging to a predetermined group from the calculated distributed power consumption; Calculating a refrigerant flow rate of each chamber and a total refrigerant flow rate of the chamber according to whether a specific mode is operated during a heating operation; And And calculating the integrated power amount of each room by using the calculated total power consumption, the refrigerant flow rate of each room, and the total refrigerant flow rate of the room. The method of claim 8, wherein the refrigerant flow rate of each chamber The real-time total power calculation method of the multi-type system, characterized in that the specific mode is operated during the heating operation is determined to be zero. The method of claim 7, wherein after the calculating step, Performing an interface with the outside; And Comprising a step of calculating the accumulated power of each room of the multi-type system, characterized in that it further comprises the step of providing the accumulated power of each room accumulated up to the point of settlement to the outside. The method of claim 7, wherein after the calculating step, At the time of settlement, comparing the sum of the total power consumption and the total power consumption of each room to determine whether there is a difference; And The result of the determination, if there is a difference, calculating the integrated power of each room by distributing the power consumption corresponding to the difference in proportion to the power consumption of each room; Calculation method. As a method of calculating the integrated power for each real type of the multi-type system to calculate the integrated power, Calculating total power consumption for one cycle; Calculating standby power consumption; Calculating a distribution power consumption by subtracting the standby power consumption from the calculated total power consumption; Calculating a total distributed power consumption by subtracting power consumption of a power consumption element belonging to a predetermined group from the calculated distributed power consumption; Calculating a refrigerant flow rate of each chamber and a total refrigerant flow rate of the chamber according to whether a specific mode is operated during a heating operation; And And calculating the integrated power amount of each room by using the calculated total power consumption, the refrigerant flow rate of each room, and the total refrigerant flow rate of the room.

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