WO2007095847A1

WO2007095847A1 - A household charging method and system of a central air conditioner

Info

Publication number: WO2007095847A1
Application number: PCT/CN2007/000517
Authority: WO
Inventors: Jianming Tan; Yuhai Su; Zehan Tan; Haichuan Song; Guiping Liu; Yujie Feng; Yuehang Zhan
Original assignee: Gree Electric Appliances Inc. Of Zhuhai
Priority date: 2006-02-23
Filing date: 2007-02-14
Publication date: 2007-08-30
Also published as: CN101025370A; CN101025370B

Abstract

A household charging method and system of a central air conditioner are provided. The household charging method includes the following steps: S1: obtaining the power consumption of a single indoor machine itself; S2: computing and obtaining the allocated power consumption of the single indoor machine, the allocated power consumption of the single indoor machine including the allocated power consumption of outdoor machines and the other power consumption indoors except the power consumption of the indoor machine itself; S3: adding the power consumption of the single indoor machine itself obtained in step S1 to the allocated power consumption of the single indoor machine obtained in step S2 to obtain the total power consumption of the single indoor machine.

Description

Technical field

The invention relates to the field of air conditioning metering, in particular to a central air conditioner household metering method. Background technique

Central air-conditioning is favored by more and more users because of its superior performance, but the characteristics of multi-connection itself are that multiple internal machines of different capabilities share one external machine, so how to use each internal machine fairly and reasonably The calculation of the actual operating costs becomes a problem. The early measurement method was based on population, and gradually developed to share utility electricity by floor area or by number of households. However, no matter what measurement method is adopted, it is impossible to obtain the user's actual electricity consumption cost fairly. The more accurate method is to install the flowmeter and calculate the cost based on the flow of ice water through the flowmeter. This method has a high price and is prone to failure, and it is troublesome to replace. The most important factor is the physical properties of the refrigerant. The flow meter cannot accurately calculate the flow rate of the refrigerant.

Summary of the invention

The present invention has the disadvantages of the prior art, and provides a central air conditioner household metering method and a central air conditioner household metering system using the method.

In order to solve the above technical problems, the following technical solutions are implemented:

A central air-conditioning household metering method calculates the power consumption of each user, and the metering method distributes the power consumption of the external unit and the power consumption of the indoor unit other than the internal machine to each internal machine.

The measurement method includes the following process:

S 1 : Calculating the power consumption of a single internal machine;

S2: Calculating the power consumption of a single internal machine, and the power consumption of the single internal machine includes

1

Confirmation The allocated outdoor unit power consumption and other power consumption in the room except the internal machine itself;

S3: Adding the power consumption of the single internal machine obtained in steps S1 and S2 to the power consumption of the single internal machine to obtain the total power consumption of the single internal machine.

The central air conditioning household metering method of the present invention further includes the step S4: the total power consumption of each of the internal machines of the user is respectively added to obtain the total power consumption of the user.

The central air conditioner household metering method of the present invention further includes the step S5: multiplying the total power consumption of the user by the unit price to obtain the user's power consumption fee.

The step S1 of the central air conditioning household metering method of the present invention includes:

S1-1: multiplying the electric heating opening time t1 of the single internal machine by its electric heating power W3⁄4d to obtain the internal electromechanical heating power consumption ^;

S1-2: Multiplying the running time t of the single internal machine and the motor power W^'m of the internal machine to obtain the internal motor running power consumption ^{WiJm t} ;

S1-3: adding ^ and ^W ^ ^t obtained in step S1-1 and step S1-2 to obtain the power consumption d _{Un of the} single internal machine itself _;

The calculation method of the power consumption of the single internal machine is as follows:

d ij.. two

n W ^r ij-Aa \ + W ij-m t .

d _ijn is the power consumption of the internal machine of the i-th customer's jth internal machine, t is the internal machine running time, ^ is the electric heating opening time, W _ijd is the electromechanical heating power of the jth station of the i-th customer, W _ljm is the motor power of the i-th customer in the jth.

In the central air conditioning household metering method of the present invention, the electric heating power W^'d and the internal motor power Wijm of the internal machine are determined by the internal machine itself, and are stored in the processing device; and the running time t and electricity The heating on time t1 can be collected by the sampling module configured in the internal machine and transmitted through the communication module. d _ w; t + W. †

To the processing device, the processing device calculates the power consumption of the single internal machine according to the formula ^{ijn ijd 1} .

In the central air conditioning household metering method of the present invention, the step S2 includes the following steps: S2-1: acquiring the total power consumption D of the unit;

S2-2: Calculate the total power consumption DL of all internal machines, that is, the sum of all ^;

S2-3: Calculate the proportional coefficient of the actual output capacity of a single internal machine in a certain range to the actual output capacity of all internal machines/ _;

S2-4: The total power consumption D is subtracted from the total power consumption of all the internal machines. The DL is multiplied by the proportional coefficient/the power consumption of the single internal machine. .

In the central air conditioner household metering method of the present invention, in the step S2-1, the total power consumption D is obtained by installing an electric energy meter in the unit.

In the central air conditioner household metering method of the present invention, in the step S2-3, the calculation method of the proportional coefficient/ is as follows:

Where: n is the number of users, m is the number of internal machines owned by a single user; is the output of the internal capacity of the i-th customer, calculated as: qij - qij A; rated for the i-th customer Capability output, A is the correction factor of the ability, according to the air conditioning operating conditions.

In the central air conditioning household metering method of the present invention, a series of correction coefficients A are stored in advance in a database of processing equipment, and the processing equipment calls an appropriate correction coefficient according to an operating condition of the air conditioner internal unit transmitted through the communication module. A. In the central air-conditioning household metering method of the present invention, the unit price is divided into unit price of a plurality of charging periods according to different power consumption time; when charging, separately calculating power consumption of each time period of the user, respectively multiplied by The corresponding unit price gives the total electricity cost.

The present invention provides a central air conditioning household metering system, the central air conditioner applying the metering system includes at least one air conditioning unit, the metering system includes at least one communication module, at least one converter, a power indicator device, and a processing device; One end of the communication module is correspondingly connected to an air conditioning unit, and the other end is connected to the processing device through the converter, and the operating parameters of the air conditioning unit are transmitted to the processing device; the power display device is connected to the The air conditioning unit obtains the total power consumption of the air conditioning unit.

In the central air conditioning household metering system of the present invention, a repeater is connected between the converter and the processing device to achieve the purpose of increasing the communication distance and increasing the communication node.

In the central air conditioning household metering system of the present invention, the processing device is equipped with a computing power application; the processing device is a computer; the power display device includes at least one electric meter, and the electric energy of the air conditioning unit is measured; The converter is an optically isolated RS232-485 converter; the air conditioning unit includes at least one external unit and at least one internal unit, and the internal unit includes at least two internal units.

Compared with the prior art, the present invention provides a central air conditioning household metering method and system not only to simply settle the consumed electricity, but also according to the air conditioner's own capacity, operating mode, fan power, ambient temperature, etc. The series affects the energy consumption of the air conditioner, and calculates the actual consumption of the air conditioner to ensure fairness and reasonableness. For the specific measurement method, please refer to the following demonstration. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic view of the module connection of the present invention;

2 is a schematic view showing the connection between the multi-unit and the communication module of the present invention; 3 is a schematic view showing the connection of a single unit and a communication module of the present invention.

Detailed ways

The invention will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1, FIG. 1 discloses a central air conditioner household metering system. The central air conditioner applying the metering system includes at least one air conditioning unit 0. The metering system includes a communication module 1, a converter 2, and a relay. The device 3, a power display device 5, and a processing device 4. The communication module 1 includes a communication controller 11 and a power transformer 12. One end of the communication controller 11 is connected to an air conditioning unit 0, and the other end is connected to the repeater 3 through the converter 2, and the data is amplified by the repeater 3. Transfer to the processing device 4. The power consumption of the air conditioning unit 0 is read by the electric quantity display device 5, and the read value is recorded in the processing device 4. The operating parameters of the air conditioning unit 0 are transmitted to the processing device 4 via the communication module 1 via the converter 2, and the operating parameters are processed and calculated by the processing device 4 to obtain the power consumption of each user. Among them, the converter 2 converts the parameter signal from the air conditioning unit 0 into a signal matching the processing device 4; and the repeater 3 enhances the signal converted by the converter 2 to facilitate long-distance transmission.

Embodiment 1:

Referring to FIG. 2, FIG. 2 discloses a connection relationship between the central air conditioner using the central air conditioner household metering system and a plurality of external units and a plurality of internal units. An external unit composed of a plurality of external units is connected to a plurality of internal units through a plurality of external unit adapter boards. A communication module is connected to the signal access point between the external adapter board and the internal unit. The operating parameters of the internal unit are transmitted to the processing device through the communication module for processing, and the power consumption of each user is measured.

Embodiment 2:

Referring to FIG. 3, FIG. 3 discloses a connection relationship between the central air conditioner having the central air conditioner household metering system and an external unit and an inner unit. The difference between this embodiment and the first embodiment is that the measurement system The statistical calculation is the cost of electricity for an external unit and an internal unit, without the need for an external adapter plate. A communication module is connected to the signal access point between the external unit and the internal unit. The operating parameters of the internal unit are transmitted to the processing device through the communication module for processing, and the power consumption of each user is measured.

The principle of central air conditioning household measurement method:

The central air conditioner generally includes at least one external unit and multiple internal units. Several internal units are divided into one group, and one external unit is used. The number of internal machines used by each user is variable. The user's air-conditioning costs include the cost of the external machine and the cost of the internal machine. The cost of a single internal unit includes the power consumption of the single internal unit and the power consumption of the single internal unit. The power consumption of a single internal unit includes the power consumption of the internal electromechanical heating and the power consumption of the internal motor. The power consumption of the internal unit includes the allocated outdoor unit power consumption and the indoor unit. Other power consumption. The power consumption of a single internal machine has a specific formula for calculation; the power consumption of a single internal machine uses a parameter to adjust the ratio of power consumption in different states.

When the user's power is calculated, the power consumption of the air conditioning unit is read by the power display device, and the read value is recorded in the processing device. At the same time, through the communication module, the status values of the air conditioner operating state and running time are recorded in the database in the processing device. The database also includes the correction factor A of the capability, and the correction factor A of the capability is obtained according to the operating conditions of the air conditioner. The capability correction coefficient is a correction parameter for the rated capacity of the air conditioner internal machine, and corresponds to the actual operating state of the air conditioner internal machine. The factors that specifically affect the correction coefficient are: operation mode, internal environment temperature, external environment temperature, etc. Operating parameters. The operating mode of the air conditioner is different, the correction coefficient is different, and the correction coefficient is adjusted according to other operating parameters. A series of correction coefficients A are pre-stored in a database of processing devices that invoke an appropriate correction factor A based on the operating conditions of the air conditioner internals transmitted via the communication module. For example: When the air conditioner is in the cooling mode, the internal environment temperature is less than 24 degrees, and the outdoor environment temperature is 25 degrees, the correction factor A value of the processing device is 70%. , The steps of the central air-conditioning household measurement method are as follows:

(1) Calculating the power consumption of a single internal unit;

The power consumption of a single internal unit includes the internal electromechanical heating power consumption and the internal motor running power consumption. According to the electric heating opening time t1 of the internal machine and the electric heating power Wijd of the internal machine, the internal electromechanical heating power consumption is obtained; and the internal motor running power consumption is obtained according to the running time t of the internal machine and the motor power Wijm of the internal machine; Wijd is the electromechanical heating power of the i-th customer in the jth station, and Wijm is the electric motor power of the jth in the i-th customer. Then use the formula (1): d.. Two W-.J, + W.. t Calculate the power consumption of the single internal machine of the i-th customer's jth internal machine ^ ". Among the internal machines The electric heating power W d and the internal motor power W^m are determined by the internal machine itself and stored in the processing equipment; and the running time t and the electric heating opening time t1 are determined by the actual use of the internal machine, and can be determined in the internal machine. The sampling module is configured to be collected, and transmitted to the processing device through the communication module, and the processing device calculates the power consumption of the single internal machine according to the formula (1).

(2) Calculate the power consumption of a single internal machine;

The power consumption allocated by a single internal unit includes the allocated outdoor unit power consumption and other power consumption in addition to the internal machine itself; the calculation method is as follows: d _ijw 2 (D - where: dy'w is the ith The power consumption of the outdoor unit allocated by the customer in the jth unit and the power consumption of the indoor side except the internal operation of the internal machine; D is the total power consumption; DL is the sum of the power consumption of all the internal machines themselves, that is, all The sum of ¹ dijn; the ratio of the actual output capacity of a single internal machine to the actual output capacity of all internal machines within a certain range. The total power consumption D of the unit can be read by the electric energy meter; The DL adds the power consumption of all the internal machines.

The scale factor is calculated as follows:

Where: n is the number of users, m is the number of internal machines owned by a single user; is the output of the internal capacity of the i-th customer, the calculation method is: qij = qije * A, (for example: an internal machine rated capacity qije is 2.5KW cooling capacity, the correction factor A is 70%, then the actual capacity output of the internal machine is 2. 5 * 70% KW cooling =

1.75KW cooling capacity); qije is the rated capacity output of the i-th customer in the jth machine, and A is the correction coefficient of the capacity ₅ according to the air conditioning operating conditions. '

(3) Calculate the total power consumption of the single internal unit, that is, the power consumption of the self in step 1) plus the power consumption allocated in step 2); that is, the total power consumption of the single internal unit

(4) The total power consumption of each internal unit of user i is added separately, and the total power consumption of user i is obtained; that is, the total power consumption of the user

DLi= J ^=] .

(5) The user's total electricity consumption is multiplied by the unit price h to obtain the user's electricity consumption fee; that is, the user i's electricity consumption fee.

DFi = DLi*h.

The unit price is divided into several unit price billing periods according to different power consumption time. When charging, the user's electricity consumption in each time period is calculated separately, and the total electricity consumption fee is obtained by multiplying the corresponding unit price.

The above steps are only illustrative and not limiting of the technical solutions of the present invention. Without departing from the spirit of the invention Any modifications or partial substitutions of the scope are intended to be included within the scope of the appended claims.

Claims

Rights request

A central air conditioning household metering method, characterized in that it comprises the following steps:

S1: Obtain the power consumption of a single internal machine;

S2: Calculating the power consumption of a single internal machine, and the power consumption of the single internal machine includes the allocated outdoor unit power consumption and the indoor power consumption other than the internal machine itself;

2. The central air conditioner household metering method according to claim 1, wherein the measuring method further comprises the step S4: the total power consumption of the internal machines of the user are respectively added, and the total user is obtained.

The central air conditioning household metering method according to claim 2, wherein the measuring method further comprises:

Step S5: The user's total power consumption is multiplied by the unit price to obtain the user's power consumption fee.

The central air conditioning household metering method according to claim 2, wherein the step S1 comprises:

S1-1: multiplying the electric heating opening time t1 of the single internal machine by its electric heating power Wijd to obtain the internal electromechanical heating power consumption ^ ¹ ;

S1-2: multiplying the running time t of the single internal machine and the motor power W3⁄4m of the internal machine to obtain

Machine motor running power consumption;

S1-3: adding the ^^ and ^W t obtained in step S1-1 and step S1-2 to obtain a single internal machine d ij..n = W ij..dJ, 1 + W ^r ij..mt . , . d _ijn is the power consumption of the internal machine of the i-th customer's jth internal machine, t is the internal machine running time , for the electric heating opening time, Wi" _d is the electromechanical heating power in the jth station of the i-th customer, and W _ijm is the motor power of the jth in the i-th customer.

The central air conditioner household metering method according to claim 4, wherein the electric heating power Wijd and the internal motor power Wijm of the internal machine are determined by the internal machine itself, and are stored in the processing device; The time t and the electric heating on time t1 can be collected by the sampling module configured in the internal machine and transmitted to the processing device through the communication module, and the processing device according to the formula d = W. f + W. f rl

i ^{jH ijd 1} is calculated to obtain the power consumption of a single internal machine ^ ".

The central air conditioning household metering method according to claim 5, wherein the step S2 comprises the following steps:

S2-1: Obtain the total power consumption of the unit D;

S2-2: Calculate the total power consumption DL of all internal machines, that is, the sum of all (!^;

S2-3 : Calculate the proportional coefficient of the actual output capacity of a single internal machine in a certain range to the actual output capacity of all internal machines / ·,

S2-4: The total power consumption is subtracted from the sum of the power consumption of all the internal machines. The DL is multiplied by the proportional coefficient/the power consumption of the single internal machine.

The central air conditioner household metering method according to claim 6, wherein in the step S2-1, the total power consumption amount 0 is obtained by installing an electric energy meter in the unit.

The central air conditioner household measurement method according to claim 6, wherein in the step S2-3, the calculation method of the proportional coefficient/ is as follows:

Where: n is the number of users, m is the number of internal machines owned by a single user; is the output of the i-th customer's j. internal machine capability, calculated as: qij = q _ije * A _; q _ije is the i-th customer j internal machine rated capacity output, A is the ability to correct the coefficient, according to air conditioning operating conditions.

9. The central air conditioner household metering method according to claim 8, wherein a series of correction coefficients A are stored in advance in a database of the processing device, and the processing device is based on the air conditioner internal unit transmitted through the communication module. The operating condition calls the appropriate correction factor A.

The central air conditioner household metering method according to claim 3, wherein the unit price is divided into unit price of a plurality of charging periods according to different power usage times; and when charging, each user time period is calculated separately. The power consumption is multiplied by the corresponding unit price to get the total electricity cost.

A central air conditioning household metering system, wherein the central air conditioner applying the metering system comprises at least one air conditioning unit, wherein the metering system comprises at least one communication module, at least one converter, a power indicator device, and a Processing device; one end of the communication module is correspondingly connected to an air conditioning unit, and the other end is connected to the processing device through the converter, and the operating parameters of the air conditioning unit are transmitted to the processing device; To the air conditioning unit, the total power consumption of the air conditioning unit is obtained.

12. The central air conditioning household metering system of claim 11 wherein a repeater is coupled between said converter and said processing device to amplify signals from said converter.

The central air conditioning household metering system according to claim 11 or 12, wherein the processing device is provided with a computing power application; the processing device is a computer; The device includes at least one electric meter for measuring the electric quantity of the air conditioning unit; the converter is optically isolated

An RS232-485 converter; the air conditioning unit includes at least one external unit and at least one internal unit, and the internal unit includes at least two internal units.