CN109373503B - Electricity consumption calculation method and device for central air conditioner and central air conditioner - Google Patents
Electricity consumption calculation method and device for central air conditioner and central air conditioner Download PDFInfo
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- CN109373503B CN109373503B CN201811204112.3A CN201811204112A CN109373503B CN 109373503 B CN109373503 B CN 109373503B CN 201811204112 A CN201811204112 A CN 201811204112A CN 109373503 B CN109373503 B CN 109373503B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
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Abstract
The invention discloses a central air conditioner electricity consumption calculation method and device and a central air conditioner, wherein the central air conditioner electricity consumption calculation method comprises the following steps: a cold/heat circulating system which can independently complete the work of a central air conditioner is used as a minimum charging unit, and the state information of the minimum charging unit is collected; in a charging period, counting the electric quantity of an external machine of the minimum charging unit through a first electric meter, and calculating the electric quantity of the external machine to be shared by each internal machine of the minimum charging unit according to the state information; counting the total electric quantity of all the internal machines in the minimum charging unit through a second electric meter, and calculating the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines according to the state information; and adding the electric quantity of the external machine, the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines to obtain the electric quantity required to be born by the internal machines in a charging period. The invention has simple structure and can obtain more accurate electric quantity needed to be born by the internal machine.
Description
Technical Field
The invention relates to a central air conditioner, in particular to a method and a device for calculating the electricity consumption of the central air conditioner more accurately.
Background
The central air conditioner has a plurality of internal machines, and the running conditions of each internal machine are different, so that the consumed power conditions are different. Taking a multi-split air conditioner as an example, the multi-split air conditioner belongs to a category of central air conditioners, and the characteristic of one split multiple air conditioners also has the problem of electric charge distribution. How to reasonably and fairly distribute the electric quantity consumed by the multi-split system to each user is always a difficult problem in the industry, and how to calculate the cost by the charging system is also a key focus of the user.
At present, no uniform charging method exists in the industry, and the commonly used charging methods include an area allocation method, a flow allocation method and a time allocation method. The area allocation method is used for calculating the use area of a user, the method is limited in application condition by adopting a 'cutting' mode, is generally only used in a large-scale market, but causes the use and the non-use of one sample, and has unreasonable defects; the flow apportionment method adopts the refrigerant flow or water flow to calculate, the charging is relatively reasonable, but a flow valve needs to be installed, the cost is relatively high, and the cost of an internal machine cannot be apportioned; the time sharing method is to calculate the cost according to the length of the service time, but in practice, parameters such as the mode, the temperature and the like set by each internal unit are not consistent, the pressure on the external unit is also different, and the electricity charge of the external unit is difficult to reasonably distribute. The above charging methods all have different degrees of defects.
The multi-split air conditioner is characterized in that the electric energy consumption of the multi-split air conditioner is mainly concentrated on the outer unit and the inner unit, wherein the electric energy consumption of the outer unit is easy to confirm (metering through an electric meter can be realized), but not easy to share (the outer unit is difficult to share), the electric energy consumption of the inner unit is relatively simple, theoretically, each inner unit can be independently provided with an electric meter for metering, but the actual engineering cannot be operated, and the reason is as follows: 1. the cost is too high, and each internal machine needs to be provided with an electric meter; 2. the operation is complex, and the corresponding electric meter number of each internal machine needs to be confirmed; 3. the power failure risk of independent power supply of each internal machine is large (a user leaves a habit switch), and the system operation is influenced.
Disclosure of Invention
In order to solve the problem that the accurate calculation of the electric quantity to be shared by each internal unit of the central air conditioner is difficult in the prior art, the invention provides an electric quantity calculation method of the central air conditioner, which comprises the following steps:
step 1, a cold/hot circulating system which can independently complete work of a central air conditioner is used as a minimum charging unit, and state information of the minimum charging unit is collected;
step 2, in a charging period, counting the electric quantity of an external machine of the minimum charging unit through a first electric meter, and calculating the electric quantity of the external machine to be shared by each internal machine of the minimum charging unit according to the state information; counting the total electric quantity of all the internal machines in the minimum charging unit through a second electric meter, and calculating the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines according to the state information;
and 3, adding the electric quantity of the external machine, the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines to obtain the electric quantity required to be born by the internal machines in a charging period.
In one embodiment, the amount of power required to be charged by the machine in the ith station in a charging period
Wherein OP is the external machine electric quantity of the minimum charging unit, IP is the total electric quantity of all the internal machines of the minimum charging unit, and TiFor the i-th unit of the minimum billing unit, the running time of the unit, CiCapacity of the i-th indoor unit of the minimum charging unit, JiThe model characteristic parameter of the ith indoor machine of the minimum charging unit, T is the time of a charging period, n is a natural number, 0<i<n。
Preferably, before the step 2, the method further comprises the steps of:
detecting whether the configuration relations of the first and second electric meters and the minimum charging unit are matched or not;
if the matching is carried out, executing the step 2; and if not, performing exception handling.
Specifically, the exception handling includes determining whether the number of the first and second electric meters is greater than the number of the minimum charging units capable of normally acquiring the state information, if so, counting the electric quantities of the first and second electric meters of the corresponding minimum charging unit in the step 2, and if not, reminding an exception.
Further, step 4 may be included, the electric charge of each internal machine is calculated according to the electric quantity to be borne by each internal machine.
The invention also provides a device adopting the power utilization calculation method, which comprises the following steps: the electric meter module is used for counting the electric quantity of the first electric meter and the second electric meter, the unit module is used for acquiring the state information, and the logic operation module is used for calculating the electric quantity of each internal unit.
Preferably, the system also comprises an HMI module for providing human-computer interaction function.
The invention also provides a central air conditioner adopting the device in the technical scheme.
In one embodiment, the central air conditioner is a multi-split air conditioner. The outdoor unit of the minimum billing unit of the central air conditioner may have a single module structure or a multi-module structure.
The invention can adopt an independent charging device to be connected into the electric meters of the inner machine and the outer machine, and calculates the electric quantity sharing mode according to the capacity requirement, thereby solving the problem of system abnormity caused by the power failure of the inner machine by users when only the outer machine is used for metering, and simultaneously reducing the equipment cost and the debugging difficulty of the household charging system. And by adopting the charging scheme of the invention, the internal machine and the external machine are uniformly powered, the system failure rate is reduced, and the requirement of household charging is met. The debugging difficulty is reduced in engineering, and the engineering efficiency is improved.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a diagram of a central system architecture in accordance with one embodiment of the present invention.
FIG. 2 is a flow diagram of a method of one embodiment of the invention.
Fig. 3 is a diagram of the structure of an apparatus according to an embodiment of the present invention.
Detailed Description
The principles and all embodiments of the present invention are explained in detail below.
The invention takes any cold/heat circulating system of the central air conditioner which can independently complete the work as a minimum charging unit to count the electric quantity of each internal machine in each minimum charging unit.
As shown in fig. 1, a central air conditioner according to an embodiment of the present invention is a multi-split air conditioner including a plurality of cooling/heating cycle systems (system 1 to system n) that can independently perform work. Each system is a minimum charging unit, and two electric meters are arranged in each minimum charging unit: a first electricity meter and a second electricity meter. The first electric meter is connected with an external unit of the minimum charging unit to count the electric quantity of the external unit, and the external unit can be of a single-module structure or a multi-module structure. And the second electric meter is connected with all the internal machines of the minimum charging unit, and the electric quantity of all the internal machines is counted.
The device needs to collect the electric quantity change of the external machine electric meter and the internal machine electric meter at the same time, and then the electric consumption of a single cold and heat source system is equal to the electric quantity of the external machine electric meter and the electric quantity of the internal machine electric meter.
The electric quantity required to be borne by each indoor unit in a charging period is divided into three parts, the first part is the allocation of the electric consumption of the outdoor unit, the allocation is mainly related to the running time, the capacity and the characteristics of the indoor unit, and when the indoor unit does not run, the allocated electric quantity is only related to the capacity of the indoor unit (because Ti is 0); the second part is the power consumption of the internal machines, and as the internal machines share one electric meter, the electric quantity of the internal machines is related to the operation time, the capacity and the type of the internal machines, the higher the fan power is, the longer the operation time is, the higher the electric quantity needs to be allocated, and assuming that the power-on state of the internal machines has about 3W power consumption (standby), the operation allocation is carried out after the standby electric quantity needs to be subtracted from the total electric quantity of the electric meters of the internal machines; the third part is the fixed standby electric quantity of the internal machine and is only related to the charging period. The electric quantity of each internal machine is composed of the three parts, so that the accurate electric quantity required to be born by each internal machine can be obtained. The electric charge to be shared by each internal machine can be calculated according to the electric quantity to be borne by each internal machine.
As shown in fig. 2, the charging method according to a preferred embodiment of the present invention is based on the above principle, and includes detecting the air conditioning unit, collecting the status information of the central air conditioner, detecting the first and second electric meters, checking the configuration information of the first and second electric meters, and determining whether the number of the electric meters matches the number of the systems (the number of the minimum charging units) capable of normally obtaining the status information. If the electric quantity is matched with the electric quantity, the data of the first electric meter and the data of the second electric meter are collected according to the principle, the electric quantity to be born by each internal unit is calculated, and the electric charge is further calculated. If not, proceed exception processing. Specifically, the exception handling determines whether the number of the first and second electric meters corresponds to the number of systems that can normally acquire status information. If some systems are not powered on, that is, the number of the first and second electric meters is greater than that of the systems capable of normally acquiring the state information, only the electric quantity of the electric meter corresponding to the powered-on system needs to be counted and the electric charge is calculated. If the number of the first electric meters and the number of the second electric meters are smaller than the number of the systems which can normally acquire the state information, the configuration is not matched, and the abnormity needs to be reminded.
In a specific calculation embodiment, the formula for calculating the electric quantity required to be charged by the ith internal unit of a system (minimum charging unit) in a charging period of the present invention is as follows:
wherein, PowiThe power required to be born by the ith internal machine, OP is the external machine power of the minimum charging unit, IP is the total power of all the internal machines of the minimum charging unit, and TiFor the i-th unit of the minimum billing unit, the running time of the unit, CiCapacity of the i-th indoor unit of the minimum charging unit, JiThe model characteristic parameter of the ith indoor machine of the minimum charging unit, T is the time of a charging period, n is a natural number, 0<i<n。
Assuming that the electric quantity to be charged by the internal unit 1 in the system 1 needs to be calculated, the charging period is 1 day, the number of the internal units in the system is 5, and 0.2 of the electric quantity to be charged by the external unit electric meter and 0.3 of the electric quantity to be charged by the internal unit electric meter are calculated by the above formula, then the electric quantity to be charged by the internal unit 1 is 78 × 0.2+ (25-0.003 × 24 × 5) 0.3+0.003 × 24 is 23.094 degrees, as shown in table 1 below.
Table 1 calculation demonstration table
As shown in fig. 3, the apparatus for performing electric quantity apportionment calculation according to the present invention may be designed to include: the system comprises an electric meter module, a unit module, a logic operation module and an HMI module. The electric meter module counts the electric quantity of the first electric meter and the second electric meter, and the unit module acquires the state information of each system (minimum charging unit), including the running time, the capacity, the running state, the model characteristic parameters and the like of each internal unit. And the logic operation module processes the data of the electric meter module and the unit module and calculates the electric quantity and the electric charge of each internal unit. The HMI module can provide human-machine interaction interfaces and information.
The invention also protects the central air conditioner adopting the charging device, the central air conditioner can be a multi-split air conditioner or other types, and the outer machine in the minimum charging unit of the central air conditioner can adopt a single-module structure or a multi-module structure, and can accurately calculate the electric quantity and the electric charge which are required to be born by each inner machine.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A power consumption calculation method of a central air conditioner is characterized by comprising the following steps:
step 1, a cold/hot circulating system which can independently complete work of a central air conditioner is used as a minimum charging unit, and state information of the minimum charging unit is collected;
step 2, in a charging period, counting the electric quantity of an external machine of the minimum charging unit through a first electric meter, and calculating the electric quantity of the external machine to be shared by each internal machine of the minimum charging unit according to the state information; counting the total electric quantity of all the internal machines in the minimum charging unit through a second electric meter, and calculating the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines according to the state information;
step 3, adding the electric quantity of the external machine, the operation consumed electric quantity and the fixed standby electric quantity which are to be shared by the internal machines to obtain the electric quantity required to be born by the internal machines in a charging period;
the electric quantity required to be borne by the ith indoor unit in one charging period
Wherein OP is the external machine electric quantity of the minimum charging unit, IP is the total electric quantity of all the internal machines of the minimum charging unit, and TiFor the i-th unit of the minimum billing unit, the running time of the unit, CiCapacity of the i-th indoor unit of the minimum charging unit, JiThe model characteristic parameter of the ith indoor machine of the minimum charging unit, T is the time of a charging period, and n is the self-charging timeNatural number, 0<i<n。
2. The electricity consumption calculation method according to claim 1, further comprising, before the step 2, the steps of:
detecting whether the configuration relations of the first and second electric meters and the minimum charging unit are matched or not;
if the matching is carried out, executing the step 2; and if not, performing exception handling.
3. The power consumption calculation method according to claim 2, wherein the exception handling includes determining whether the number of the first and second electric meters is greater than the number of the minimum charging unit that can normally acquire the status information, if so, counting the electric quantity of the first and second electric meters of the corresponding minimum charging unit in the step 2, and if not, performing exception reminding.
4. The electricity consumption calculation method according to claim 1, further comprising a step 4 of calculating an electricity charge of each internal unit based on the amount of electricity to be charged to each internal unit.
5. The device adopting the electricity calculation method according to any one of claims 1 to 4, comprising: the electric meter module is used for counting the electric quantity of the first electric meter and the second electric meter, the unit module is used for acquiring the state information, and the logic operation module is used for calculating the electric quantity of each internal unit.
6. The apparatus of claim 5, further comprising an HMI module that provides human-machine interaction functionality.
7. A central air conditioner using the apparatus as set forth in claim 5 or 6.
8. The central air conditioner according to claim 7, wherein the central air conditioner is a multi-split air conditioner.
9. The central air conditioner according to claim 7, wherein an outer unit of a minimum charge unit of the central air conditioner has a single module structure or a multi-module structure.
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| CN201811204112.3A CN109373503B (en) | 2018-10-16 | 2018-10-16 | Electricity consumption calculation method and device for central air conditioner and central air conditioner |
| PCT/CN2018/122448 WO2020077810A1 (en) | 2018-10-16 | 2018-12-20 | Method and apparatus for calculating electricity consumption for central air conditioner, and central air conditioner |
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| CN201811204112.3A CN109373503B (en) | 2018-10-16 | 2018-10-16 | Electricity consumption calculation method and device for central air conditioner and central air conditioner |
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| CN109373503A CN109373503A (en) | 2019-02-22 |
| CN109373503B true CN109373503B (en) | 2020-02-28 |
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| CN110296512A (en) * | 2019-07-11 | 2019-10-01 | 珠海格力电器股份有限公司 | The metering method of electric power changes of air conditioners, apparatus and system |
| CN110440421B (en) * | 2019-08-07 | 2020-06-30 | 珠海格力电器股份有限公司 | Multi-split debugging method based on random codes, household charging system and air conditioner |
| CN111160990A (en) * | 2019-12-31 | 2020-05-15 | 海信集团有限公司 | Electric appliance charging method and device |
| CN113570782A (en) * | 2021-07-26 | 2021-10-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Charging management method, device and system |
| CN113883693A (en) * | 2021-10-28 | 2022-01-04 | 湖北合合能源科技发展有限公司 | Metering method of centralized central air-conditioning system |
| CN113917211A (en) * | 2021-11-05 | 2022-01-11 | 万合智联(浙江)科技有限公司 | Central air-conditioning charging and distributing system |
| CN115388517A (en) * | 2022-07-27 | 2022-11-25 | 宁波奥克斯电气股份有限公司 | Household charging method and device for multi-connected air conditioner and multi-connected air conditioner |
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| JP4130134B2 (en) * | 2003-02-26 | 2008-08-06 | 三洋電機株式会社 | Device for calculating power consumption per unit time for each operation mode of equipment in facility and device for calculating power consumption of equipment in facility |
| CN1712843A (en) * | 2004-06-21 | 2005-12-28 | 乐金电子(天津)电器有限公司 | Air conditioning system with plural indoor units and its operation |
| CN101025370B (en) * | 2006-02-23 | 2010-10-13 | 珠海格力电器股份有限公司 | Central air-conditioner individual metering method and system |
| CN102175901A (en) * | 2011-01-25 | 2011-09-07 | 东南大学 | Energy consumption division method of multi-connected central air conditioning system and household charging system |
| CN103513099B (en) * | 2012-06-20 | 2017-02-08 | 珠海格力电器股份有限公司 | Method and device for air-conditioner power consumption processing |
| CN102778007B (en) * | 2012-08-16 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Electricity quantity distributing method of frequency conversion multi-connected central air-conditioning machine set |
| CN105737338B (en) * | 2016-02-25 | 2019-02-12 | 广东美的暖通设备有限公司 | Information about power calculation method, device, multi-gang air-conditioner device system and its outer machine |
| CN106771566B (en) * | 2016-12-09 | 2019-04-05 | 珠海格力电器股份有限公司 | Household-based charging method for multiple online air conditioners, device and system |
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