CN102359794B - Charging method and system for multi-connected central air conditioner external units - Google Patents
Charging method and system for multi-connected central air conditioner external units Download PDFInfo
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- CN102359794B CN102359794B CN 201110250610 CN201110250610A CN102359794B CN 102359794 B CN102359794 B CN 102359794B CN 201110250610 CN201110250610 CN 201110250610 CN 201110250610 A CN201110250610 A CN 201110250610A CN 102359794 B CN102359794 B CN 102359794B
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Abstract
The invention relates to a charging method and system for multi-connected central air conditioner external units; the expense of each air conditioner unit is calculated by the conduction area of an electronic expansion valve and the conduction time; and the charging method and the system for multi-connected central air conditioner external units has the advantages of simple wiring, stability, reliability, accurate calculation and capability of accurately allocating electric charge of each room in real time in application process so that the management on a whole building is simpler and more convenient.
Description
Technical field
The present invention relates to the outer machine charging method of a kind of multi-joint machine central air conditioner and system, relate in particular to the outer machine charging method of a kind of multi-joint machine central air conditioner and system.
Background technology
The method that the outer dynamo-electric amount of existing business air conditioner is distributed mostly adopts according to user's service time and usable floor area carrying out rough expense allocation; And seem more scientific and reasonable by determining that according to machine cold medium flux in each machine distributes outer electromechanics to measure in each in the middle of the practical application.
In the existing method of distributing outer dynamo-electric amount according to cold medium flux with good grounds on pipeline mounting temperature sensor, pressure transducer, flow sensor carry out outer dynamo-electric amount distribution, it mainly contains following shortcoming:
The wiring complexity: its measurement is an independent cover sensor Acquisition Circuit that is independent of air-conditioner controller, and much sensor is connected in separately on the pipeline, and wiring is very complicated.
Stability, precision is not high: its measuring accuracy depends on the measuring accuracy of sensor to a great extent, and flow sensor depends on the induction to cold medium flux in managing, so sensor accuracy is easy to the restriction of the time that is subjected to or environment, shines into serious distortion.
The cost height: this method in actual applications controller, sensor, the connecting line expense can be very high.
Summary of the invention
The technical matters that the present invention solves is: make up a kind of central air conditioner charging method and system, overcome present technology wiring complexity, calculation deviation is big, the monolithic stability reliability is low technical matters.
Technical scheme of the present invention is: make up the outer machine charging distribution method of a kind of multi-joint machine central air conditioner, the refrigerant of described central air conditioner arrives condenser condenses through outdoor compressor, output to evaporator through electric expansion valve again, described central air conditioner charging method comprises the steps
Obtain the aperture of electric expansion valve: aperture and the working time of obtaining each electric expansion valve when in the charging phase, working;
Obtain the conducting area of each electric expansion valve: conducting area and working time when obtaining each electric expansion valve work according to the aperture of electric expansion valve;
Obtain the conducting area of all electric expansion valves of air-conditioning: conducting area and the working time of obtaining all electric expansion valves of air-conditioning according to the conducting area of each electric expansion valve and working time;
Calculate the expense of each air-conditioning unit: according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
Further technical scheme of the present invention is: in the expense of calculating each air-conditioning unit, comprise the steps:
Obtain the conducting area of unit interval: conducting area and working time and total working time according to each electric expansion valve, draw the conducting area of unit interval;
Obtain the consumes power of unit interval: conducting area and the conducting total area according to the unit interval, obtain the consumes power of unit interval;
Obtain the electric weight that each air-conditioning unit consumes: according to the consumes power of each air-conditioning unit unit interval and the working time of each air-conditioning unit, draw each air-conditioning unit at the electric weight of phase internal consumption that charges.
Further technical scheme of the present invention is: in obtaining the conducting area step of unit interval, comprising:
Electronic expansion valve opening does not change in the unit interval, and then the conducting area of interior electric expansion valve of unit interval equals the conducting area of this electric expansion valve;
Electronic expansion valve opening changes in the unit interval, then in the unit interval conducting area of electric expansion valve equal in unit interval electric expansion valve conducting interface weighted mean value.
Further technical scheme of the present invention is: the described unit interval is 5 to 20 minutes.
Further technical scheme of the present invention is: the described unit interval is 10 minutes.
Technical scheme of the present invention is: make up the outer machine charge system of a kind of multi-joint machine central air conditioner, comprise outdoor compressor, condenser, electric expansion valve, evaporator, the refrigerant of described central air conditioner arrives condenser condenses through outdoor compressor, output to evaporator through electric expansion valve again, described central air conditioner charge system also comprises the aperture collecting unit of gathering electronic expansion valve opening, obtain first acquiring unit of electric expansion valve conducting sectional area and working time, obtain the conducting area of all electric expansion valves of air-conditioning and the second acquisition unit of working time, calculate the electricity charge computing unit of the expense of each air-conditioning unit, described first acquiring unit obtains the conducting sectional area of electric expansion valve according to the relation of the electronic expansion valve opening of described aperture collecting unit collection and electronic expansion valve opening and electric expansion valve conducting sectional area, described second acquisition unit obtains conducting area and the working time that the result obtains all electric expansion valves of air-conditioning according to first acquiring unit, described electricity charge computing unit is according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
Further technical scheme of the present invention is: described electricity charge computing unit comprise the conducting area that obtains the unit interval unit interval conducting area acquisition module, obtain the consumes power of unit interval unit interval consumes power acquisition module, obtain the air-conditioning unit consumes power acquisition module of each air-conditioning unit consumes power.
Further technical scheme of the present invention is: the storage unit that also comprises the relation of store electrons expansion valve opening and electric expansion valve conducting sectional area.
Technique effect of the present invention is: the outer machine charging method of a kind of multi-joint machine central air conditioner of the present invention and system, conducting area and ON time by electric expansion valve are calculated each air-conditioning unit consumption expense of machine outward, central air conditioner charging method of the present invention and system's wiring in application are simple, reliable and stable, calculate accurately, also can accurately distribute each room electricity charge in real time, make whole building management more simple and convenient.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
Fig. 2 is connection diagram of the present invention.
Fig. 3 is each air-conditioning unit consumes power process flow diagram of calculating of the present invention.
Fig. 4 is structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment, technical solution of the present invention is further specified.
As shown in Figure 1 and Figure 2, the specific embodiment of the present invention is: make up the outer machine charging method of a kind of multi-joint machine central air conditioner, the refrigerant of described central air conditioner to condenser condenses, outputs to evaporator through electric expansion valve through outdoor compressor again.Because refrigerant is liquid state or gaseous state under the refrigerant normal condition, refrigerant is through equating at each electric expansion valve place through pressure before the electric expansion valve after the outdoor condenser, so refrigerant is directly proportional with this place's electric expansion valve conducting diameter through the coolant quantity of indoor set, thus, the outer machine charging method of described multi-joint machine central air conditioner comprises the steps
Step 100: obtain the aperture of electric expansion valve, that is: obtain aperture and the working time of each electric expansion valve when in the charging phase, working.
Specific implementation process is as follows: in sharing multi-joint machine central air conditioner, every interior machine will pass through electric expansion valve before refrigerant enters evaporator, and electronic expansion valve opening is controlled by interior machine, simultaneously, electric expansion valve is to be controlled step by step by stepper motor, the air-conditioning expansion valve that initially powers at every turn or shut down all can close extremely, and expansion valve opening zero clearing has simultaneously reached the purpose of calibration.In use, indoor set can send current expansion valve opening value to central controller and host computer by mixed-media network modules mixed-media, and host computer just gets up the electronic expansion valve opening real-time storage of every interior machine correspondence, has so just obtained the aperture of electric expansion valve.
Step 200: obtain the conducting area of each electric expansion valve, that is: conducting area and working time when obtaining each electric expansion valve work according to the aperture of electric expansion valve.
Specific implementation process is as follows: the table of comparisons of the corresponding current electric expansion valve conducting area of store electrons expansion valve opening in system, can be according to the conducting sectional area of tabling look-up to obtain electric expansion valve after obtaining electronic expansion valve opening, simultaneously, record the time of each electric expansion valve conducting, that is the working time of air-conditioning unit.
Step 300: obtain the conducting area of all electric expansion valves of air-conditioning, that is: conducting area and the working time of obtaining all electric expansion valves of air-conditioning according to the conducting area of each electric expansion valve and working time.Each electric expansion valve conducting area and working time are added up to, obtain conducting area and the working time of all electric expansion valves of air-conditioning.
Step 400: the expense of calculating each air-conditioning unit, that is: according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
As shown in Figure 3, specific implementation process is as follows: in system, electricity charge branch is equipped with the unit interval meter, and concrete computation process is as follows:
Step 401: obtain the conducting area of unit interval, that is: according to conducting area and working time and total working time of each electric expansion valve, draw the conducting area of unit interval.
Detailed process is as follows: in the unit interval, flow to each evaporator cold medium flux ratio and have two kinds of situations:
The organic electronic expansion valve opening does not change in ten minutes, electric expansion valve conducting sectional area S △=S then, and wherein: S is the conducting area that begins the unit interval.
If the organic electronic expansion valve opening is regulated in ten minutes, then electric expansion valve conducting area S △ equal in unit interval electric expansion valve conducting interface weighted mean value, be S △=(S1*T1+S2*T2+ ... Sn*Tn)/T, wherein, Sn is the conducting area at Tn electric expansion valve in the time, and T is T.T..
Step 402: obtain the consumes power of unit interval, that is: according to conducting area and the conducting total area of unit interval, obtain the consumes power of unit interval.
Step 403: obtain the electric weight that each air-conditioning unit consumes, that is: according to the consumes power of each air-conditioning unit unit interval and the working time of each air-conditioning unit, draw each air-conditioning unit at the electric weight of phase internal consumption that charges.
Draw the outer dynamo-electric amount of consumption according to the conducting sectional area, after obtaining S △, each start air-conditioned room refrigerant consumption follows S △ to be directly proportional, to closing air conditioner S △=0.So n platform air-conditioning is dynamo-electric amount Wn outside the unit interval internal consumption:
Wn=Q*S△n/（S1?+S2?+……+Sm）
Wherein: Q is the inside and outside total electric weight of machine consumption of unit interval, is drawn by the system queries ammeter; M is the total platform number of indoor set, (S1+S2+... + Sm) be the conducting interface of all electric expansion valves of air-conditioning in the chargeable time.
By above-mentioned calculating, draw the electric weight that machine consumes in each air-conditioning unit in the unit interval, with unit interval internal consumption electric weight addition, can obtain an air-conditioning dynamo-electric amount total value outside a period of time internal consumption, then the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
In the specific implementation process, the described unit interval is 5 to 20 minutes.In the embodiment of the invention, the described unit interval is 10 minutes.
As shown in Figure 4, the specific embodiment of the present invention is: make up the outer machine charge system of a kind of multi-joint machine central air conditioner, comprise outdoor compressor, condenser, electric expansion valve, evaporator, the refrigerant of described central air conditioner arrives condenser condenses through outdoor compressor, output to evaporator through electric expansion valve again, described central air conditioner charge system also comprises the aperture collecting unit 1 of gathering electronic expansion valve opening, obtain first acquiring unit 2 of electric expansion valve conducting sectional area and working time, obtain conducting area and the second acquisition unit of working time 3 of all electric expansion valves of air-conditioning, calculate the electricity charge computing unit 4 of the expense of each air-conditioning unit, described first acquiring unit 2 obtains the conducting sectional area of electric expansion valve according to the relation of the electronic expansion valve opening of described aperture collecting unit collection and electronic expansion valve opening and electric expansion valve conducting sectional area, described second acquisition unit 3 obtains conducting area and the working time that the result obtains all electric expansion valves of air-conditioning according to first acquiring unit, described electricity charge computing unit 4 is according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
Specific implementation process is as follows: indoor set can send current expansion valve opening value to central controller and host computer by mixed-media network modules mixed-media, host computer just gets up the electronic expansion valve opening real-time storage of every interior machine correspondence, and aperture collecting unit 1 has just obtained the aperture of electric expansion valve like this.The table of comparisons of the corresponding current electric expansion valve conducting area of store electrons expansion valve opening in system, after obtaining electronic expansion valve opening, first acquiring unit 2 can be according to the conducting sectional area of tabling look-up to obtain electric expansion valve, simultaneously, record the time of each electric expansion valve conducting, that is the working time of air-conditioning unit.Described second acquisition unit 3 adds up to each electric expansion valve conducting area and working time, obtains conducting area and the working time of all electric expansion valves of air-conditioning.Electricity charge computing unit 4 is according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.Wherein, unit interval conducting area acquisition module 41 draws the conducting area of unit interval according to conducting area and working time and total working time of each electric expansion valve.
Detailed process is as follows: in the unit interval, flow to each evaporator cold medium flux ratio and have two kinds of situations:
The organic electronic expansion valve opening does not change in ten minutes, electric expansion valve conducting sectional area S △=S then, and wherein: S is the conducting area that begins the unit interval.
If the organic electronic expansion valve opening is regulated in ten minutes, then electric expansion valve conducting area S △ equal in unit interval electric expansion valve conducting interface weighted mean value, be S △=(S1*T1+S2*T2+ ... Sn*Tn)/T, wherein, Sn is the conducting area at Tn electric expansion valve in the time, and T is T.T..
Unit interval consumes power acquisition module 42 obtains the consumes power of unit interval according to conducting area and the conducting total area of unit interval.
Air-conditioning unit consumes power acquisition module 43 draws each air-conditioning unit at the electric weight of phase internal consumption that charges according to the consumes power of each air-conditioning unit unit interval and the working time of each air-conditioning unit.
Detailed process is as follows: draw according to the conducting sectional area and consume outer dynamo-electric amount, after obtaining S △, each start air-conditioned room refrigerant consumption is directly proportional with S △, to closing air conditioner S △=0.So n platform air-conditioning is dynamo-electric amount Wn outside the unit interval internal consumption:
Wn=Q*S△n/（S1?+S2?+……+Sm）
Wherein: Q is the inside and outside total electric weight of machine consumption of unit interval, is drawn by the system queries ammeter; M is the total platform number of indoor set, (S1+S2+... + Sm) be the conducting interface of all electric expansion valves of air-conditioning in the chargeable time.
In the specific embodiment, the outer machine charge system of described multi-joint machine central air conditioner also comprises the storage unit 5 of the relation of store electrons expansion valve opening and electric expansion valve conducting sectional area.
Technique effect of the present invention is: a kind of central air conditioner charging method of the present invention and system, conducting area and ON time by electric expansion valve are calculated each air-conditioning unit consumption expense of machine outward, central air conditioner charging method of the present invention and system's wiring in application are simple, reliable and stable, calculate accurately, also can accurately distribute each room electricity charge in real time, make whole building management more simple and convenient.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. the outer machine charging method of a multi-joint machine central air conditioner, the refrigerant of described central air conditioner to condenser condenses, outputs to evaporator through electric expansion valve through outdoor compressor again, and the outer machine charging method of described multi-joint machine central air conditioner comprises the steps
Obtain the aperture of electric expansion valve: aperture and the working time of obtaining each electric expansion valve when in the charging phase, working;
Obtain the conducting area of each electric expansion valve: conducting area and working time when obtaining each electric expansion valve work according to the aperture of electric expansion valve;
Obtain the conducting area of all electric expansion valves of air-conditioning: conducting area and the working time of obtaining all electric expansion valves of air-conditioning according to the conducting area of each electric expansion valve and working time;
Calculate the expense of each air-conditioning unit: according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
2. according to the outer machine charging method of the described multi-joint machine central air conditioner of claim 1, it is characterized in that, in the expense of calculating each air-conditioning unit, comprise the steps:
Obtain the conducting area of unit interval: in the unit interval, conducting area and working time and total working time according to each electric expansion valve, draw the conducting area of unit interval;
Obtain the consumes power of unit interval: conducting area and the conducting total area according to the unit interval, obtain the consumes power of unit interval;
Obtain the electric weight that each air-conditioning unit consumes: according to the consumes power of each air-conditioning unit unit interval and the working time of each air-conditioning unit, draw each air-conditioning unit at the electric weight of phase internal consumption that charges.
3. according to the outer machine charging method of the described multi-joint machine central air conditioner of claim 2, it is characterized in that, in obtaining the conducting area step of unit interval, comprising:
Electronic expansion valve opening does not change in the unit interval, and then the conducting area of interior electric expansion valve of unit interval equals the conducting area of this electric expansion valve;
Electronic expansion valve opening changes in the unit interval, then in the unit interval conducting area of electric expansion valve equal in unit interval electric expansion valve conducting area weighted mean value.
4. according to the outer machine charging method of the described multi-joint machine central air conditioner of claim 2, it is characterized in that the described unit interval is 5 to 20 minutes.
5. according to the outer machine charging method of the described multi-joint machine central air conditioner of claim 4, it is characterized in that the described unit interval is 10 minutes.
6. the outer machine charge system of a multi-joint machine central air conditioner, comprise outdoor compressor, condenser, electric expansion valve, evaporator, the refrigerant of described central air conditioner arrives condenser condenses through outdoor compressor, output to evaporator through electric expansion valve again, it is characterized in that, also comprise the aperture collecting unit of gathering electronic expansion valve opening, obtain first acquiring unit of electric expansion valve conducting sectional area and working time, obtain the conducting area of all electric expansion valves of air-conditioning and the second acquisition unit of working time, calculate the electricity charge computing unit of the expense of each air-conditioning unit, described first acquiring unit obtains the conducting sectional area of electric expansion valve according to the relation of the electronic expansion valve opening of described aperture collecting unit collection and electronic expansion valve opening and electric expansion valve conducting sectional area, described second acquisition unit obtains conducting area and the working time that the result obtains all electric expansion valves of air-conditioning according to first acquiring unit, described electricity charge computing unit is according to conducting area and the working time of the conducting area of each electric expansion valve and working time and all electric expansion valves and consume total electric weight and calculate each air-conditioning unit at the electric weight of phase internal consumption that charges, the expense that draws each air-conditioning unit according to electric weight and the electric unit price of each air-conditioning unit consumption.
7. according to the outer machine charge system of the described multi-joint machine central air conditioner of claim 6, it is characterized in that, described electricity charge computing unit comprise the conducting area that obtains the unit interval unit interval conducting area acquisition module, obtain the consumes power of unit interval unit interval consumes power acquisition module, obtain the air-conditioning unit consumes power acquisition module of each air-conditioning unit consumes power.
8. according to the outer machine charge system of the described multi-joint machine central air conditioner of claim 6, it is characterized in that, also comprise the storage unit of the relation of store electrons expansion valve opening and electric expansion valve conducting sectional area.
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| CN 201110250610 CN102359794B (en) | 2011-08-29 | 2011-08-29 | Charging method and system for multi-connected central air conditioner external units |
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| CN102359794B true CN102359794B (en) | 2013-07-03 |
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| CN107560078B (en) * | 2017-09-04 | 2018-11-13 | 珠海格力电器股份有限公司 | An a kind of one driven multiple air conditioner and its calculating of interior machine electricity consumption ratio, power energy allocation method |
| CN109061288B (en) * | 2018-07-16 | 2020-06-26 | 珠海格力电器股份有限公司 | Household charging method, device and system for multi-split system and charging terminal |
| CN109188938A (en) * | 2018-08-16 | 2019-01-11 | 珠海聚能精密工业有限公司 | Intelligent motor protection and Internet of Things remotely control metering system |
| CN112066520B (en) * | 2020-09-17 | 2022-02-22 | 无锡职业技术学院 | Intelligent building air conditioner charging and intelligent management and control system |
| CN112413830B (en) * | 2020-11-02 | 2022-06-14 | 青岛海尔空调器有限总公司 | Information processing method and information processing equipment for shared air conditioning system |
| CN113137712B (en) * | 2021-04-08 | 2022-03-18 | 珠海格力电器股份有限公司 | Metering method for power consumption of electronic expansion valve and air conditioner |
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