CN108050645A - A kind of multi-connected machine heating operation divided gauging method and system - Google Patents
A kind of multi-connected machine heating operation divided gauging method and system Download PDFInfo
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- CN108050645A CN108050645A CN201711051044.7A CN201711051044A CN108050645A CN 108050645 A CN108050645 A CN 108050645A CN 201711051044 A CN201711051044 A CN 201711051044A CN 108050645 A CN108050645 A CN 108050645A
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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
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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Abstract
The invention discloses a kind of multi-connected machine heating operation divided gauging method and systems, obtain power and heat exchange amount of the every heating operation indoor unit in set period of time T, obtain power of the outdoor unit in set period of time T, by outdoor unit electric-controlled plate no-load power consumption mean allocation to all indoor units, according to heat exchange area accounting of the every heating operation indoor unit in set period of time（During anti-cold wind state）Or heat exchange amount accounting（During normal heating state）Compressor of outdoor unit power consumption, outdoor fan power consumption, outdoor unit electrically-controlled valve power consumption are distributed to the total power consumption for every heating operation indoor unit, calculating every heating operation indoor unit in set period of time T；Improve the fairness and accuracy of household metering；Moreover, the metering method of the present embodiment, does not increase multi-connected machine hardware cost, without using kilowatt-hour meter, realize that multi-connected machine energy consumption point family is distributed, household metering cost is reduced, convenient for the popularization and application of household metering.
Description
Technical field
The invention belongs to air-conditioning technical fields, are to be related to a kind of multi-connected machine heating operation divided gauging method specifically
And system.
Background technology
Multi-connected machine refers to be made of one or more outdoor units and the more indoor set systems for being mounted on different application space
Heating (heat pump) system.Multi-connected machine saves installation space, energy conservation and environmental protection, convenient for the advantages such as controlling and managing, in business with it
It is widely applied with office space.
The household cost allocation system of multi-connected machine has certain demand in some large and medium-sized business places, it can not only be realized not
With the compartment according to can pay, and user can be promoted to form energy saving custom, realize the energy saving of overall operation.
Existing multi-line system household cost allocation method is more complicated, and not only each multi-line system needs to configure an intelligence
Energy digital kilowatt-hour meter, and every interior machine will configure corresponding ammeter.This causes household cost allocation system price costly, limit
The commonly used of household cost allocation is made.
The content of the invention
The present invention provides a kind of multi-connected machine heating operation divided gauging method, the fairness of household metering is improved, and
Without kilowatt-hour meter, cost is than relatively low.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of multi-connected machine heating operation divided gauging method, the multi-connected machine include outdoor unit and divide with the outdoor unit
The multiple indoor units not connected, the described method includes：
(1) power of the every heating operation indoor unit in set period of time T is obtained：
Pn=PFn+WEn+Wfn,
Wherein, PnFor power of n-th heating operation indoor unit in set period of time T,
PFnFor power of the wind turbine in set period of time T of n-th heating operation indoor unit,
WEnFor no-load power of the electric-controlled plate in set period of time T of n-th heating operation indoor unit,
WfnFor power of the electric expansion valve in set period of time T of n-th heating operation indoor unit,
N=1,2,3 ... ..., N1, N1 are the quantity of heating operation indoor unit；
(2) heat exchange amount of the every heating operation indoor unit in set period of time T is obtained：
Hn=1.01Gn·(Toutn-Tain)；
Wherein, HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；
GnFor the air-supply quality stream under setting speed of the wind turbine in set period of time T of n-th heating operation indoor unit
Amount；
ToutnFor leaving air temp of n-th heating operation indoor unit at the air outlet in set period of time T；
TainFor the inlet air temperature of air inlet of n-th heating operation indoor unit in set period of time T；
(3) power P of the outdoor unit in set period of time T is obtainedw：
Wherein, Pw1 be power of the compressor in set period of time T, Pw2 be work(of the outdoor fan in set period of time T
Rate,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,3 ..., M, M is outdoor unit electrically-controlled valve
Quantity；
(4) total power consumption of the every heating operation indoor unit in set period of time T is calculated：
When heating operation indoor unit is anti-cold wind state：
When heating operation indoor unit normally heats state：
Wherein, PznFor general power of n-th heating operation indoor unit in set period of time T；
N2 is the quantity of the indoor unit of holding state；
Ww0 is no-load power of the outdoor unit electric-controlled plate in set period of time T；
AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；
AzFor total heat exchange area of heat exchanger of all heating operation indoor units in set period of time T；
HzFor total heat exchange amount of all heating operation indoor units in set period of time T.
Further, gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit
Toutn, Tai is obtained by being laid in the temperature sensor acquisition of air inlet of n-th heating operation indoor unitn。
Further, formula is passed throughIt obtains
Toutn；Wherein, KnFor the system that exchanges heat under heat exchanger heating condition of the wind turbine under setting speed of n-th heating operation indoor unit
Number；AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；Tsat is in setting time
The corresponding saturation temperature of Compressor Discharge Pressure in section T, detects Compressor Discharge Pressure by pressure sensor first, then
Calculate the corresponding saturation temperature Tsat of pressure at expulsion；TainBy the air inlet for being laid in n-th heating operation indoor unit
Temperature sensor acquisition obtain.
Further, the method further includes：In multi-connected machine heating operation, obtain every holding state indoor unit and exist
Total power consumption in set period of time T；Calculation formula is：Wherein, WE1jIt is standby for jth platform
No-load power of the electric-controlled plate of state indoor unit in set period of time T, Wf1jElectronics for jth platform holding state indoor unit is swollen
Power of the swollen valve in set period of time T, j=1,2,3 ... ..., N2, N2 are the quantity of holding state indoor unit.
Further, formula P is passed throughw1=Vqiq/ η, calculate Pw1；Wherein, Vq, iq are the q shaft voltages of compressor
And electric current；η is driven compressor module efficiency, and calculation formula is：
Wherein, A, B, C be fitting constant, fmax,
Fmin is the peak frequency and minimum frequency that compressor can be run, and f is the frequency of compressor actual motion, and I0 exists for compressor
Rated current under current frequency.
A kind of multi-connected machine heating operation household metering system, the multi-connected machine include outdoor unit and divide with the outdoor unit
The multiple indoor units not connected, the system comprises：Indoor unit power obtaining module, for obtaining every heating operation indoor unit
Power in set period of time T：Pn=PFn+WEn+Wfn, wherein, PnIt is n-th heating operation indoor unit in set period of time T
Interior power, PFnFor power of the wind turbine in set period of time T of n-th heating operation indoor unit, WEnFor n-th heating fortune
No-load power of the electric-controlled plate of row indoor unit in set period of time T, WfnFor the electronic expansion of n-th heating operation indoor unit
Power of the valve in set period of time T, n=1,2,3 ... ..., N1, N1 are the quantity of heating operation indoor unit；Indoor unit exchanges heat
Amount obtains module, for obtaining heat exchange amount of the every heating operation indoor unit in set period of time T：Hn=1.01Gn·
(Toutn-Tain)；Wherein, HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；GnFor n-th heating
Run the air-supply mass flow under setting speed of the wind turbine of indoor unit in set period of time T；ToutnFor n-th heating fortune
Leaving air temp of the row indoor unit at the air outlet in set period of time T；TainBe n-th heating operation indoor unit setting when
Between air inlet in section T inlet air temperature；Outdoor unit power obtaining module, for obtaining outdoor unit in set period of time T
Power Pw：Wherein, Pw1 be power of the compressor in set period of time T, Pw2 be outdoor wind
Power of the machine in set period of time T,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,
3 ..., M, M are the quantity of outdoor unit electrically-controlled valve；Heating operation indoor unit total power consumption obtains module, for calculating every heating fortune
Total power consumption of the row indoor unit in set period of time T：When heating operation indoor unit is anti-cold wind state：When heating operation indoor unit normally heats state：Wherein, PznIt is total in set period of time T for n-th heating operation indoor unit
Power；N2 is the quantity of the indoor unit of holding state；Ww0 is no-load power of the outdoor unit electric-controlled plate in set period of time T；An
For the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；AzFor all heating operation indoor units
Total heat exchange area of heat exchanger in set period of time T；HzIt is total in set period of time T for all heating operation indoor units
Heat exchange amount.
Further, the system also includes：Leaving air temp acquisition module, for passing through formula
Obtain Toutn；Wherein, KnFor n-th
The coefficient of heat transfer under heat exchanger heating condition of the wind turbine of heating operation indoor unit under setting speed；AnFor n-th heating operation
The heat exchange area of heat exchanger of the indoor unit in set period of time T；Tsat is the Compressor Discharge Pressure in set period of time T
Corresponding saturation temperature detects Compressor Discharge Pressure by pressure sensor first, then to calculate pressure at expulsion corresponding
Saturation temperature Tsat；TainIt is gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
Further, the system also includes：Standby indoor unit total power consumption obtains module, is transported for being heated in multi-connected machine
During row, total power consumption of the every holding state indoor unit in set period of time T is obtained；Calculation formula is：Wherein, WE1jFor jth platform holding state indoor unit electric-controlled plate in set period of time T
No-load power, Wf1jFor power of the electric expansion valve in set period of time T of jth platform holding state indoor unit, j=1,2,
3 ... ..., N2, N2 are the quantity of holding state indoor unit.
Further, the outdoor unit power obtaining module includes：Compressor horsepower computing unit, for passing through formula
Pw1=Vqiq/ η, calculate Pw1；Wherein, Vq, iq are the q shaft voltages and electric current of compressor；Efficiency calculation unit, for leading to
Cross formula
η is calculated, wherein, A, B, C are fitting constant,
Fmax, fmin are the peak frequency and minimum frequency that compressor can be run, and f is the frequency of compressor actual motion, and I0 is pressure
Rated current of the contracting machine under current frequency.
Compared with prior art, the advantages and positive effects of the present invention are：It counts at the multi-connected machine heating operation point family of the present invention
Method and system are measured, obtain power and heat exchange amount of the every heating operation indoor unit in set period of time T, outdoor unit is obtained and exists
Power in set period of time T by outdoor unit electric-controlled plate no-load power consumption mean allocation to all indoor units, is transported according to every heating
Heat exchange area accounting (during anti-cold wind state) or heat exchange amount accounting of the row indoor unit in set period of time (normally heat state
When) distribute compressor of outdoor unit power consumption, outdoor fan power consumption, outdoor unit electrically-controlled valve power consumption to every heating operation indoor unit,
Calculate total power consumption of the every heating operation indoor unit in set period of time T；Improve the fairness of household metering and accurate
Property；Moreover, the metering method of the present embodiment, does not increase multi-connected machine hardware cost, without using kilowatt-hour meter, multi-connected machine energy consumption point is realized
Family is distributed, and household metering cost is reduced, convenient for the popularization and application of household metering；Moreover, the method for the present embodiment, simple easy
Row, is easy to implement.
After the specific embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is the flow chart of one embodiment of multi-connected machine heating operation divided gauging method proposed by the present invention；
Fig. 2 is the structure diagram of one embodiment of multi-connected machine heating operation household metering system proposed by the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
The present invention is described in further detail.
The multi-connected machine heating operation divided gauging method of the present invention, does not increase multi-connected machine hardware cost, without using digital electricity
Table is spent, heating operation household metering is realized on the basis of existing multi-connected machine hardware, reduces household metering cost, is improved point
The fairness and accuracy of family metering.
Multi-connected machine includes outdoor unit, multiple indoor units, Centralized Controller (or monitoring server)；Outdoor unit passes through refrigerant pipe
Road is connected respectively with each indoor unit, and it is swollen that an electronics is laid on the refrigerant pipeline being connected in each indoor unit with outdoor unit
Swollen valve, for controlling flow rate of heat medium；Outdoor unit is communicated with each indoor unit by connection, and outdoor unit can be in sensing chamber
The operating status of machine, outdoor unit sends operation data to indoor unit, and can control the operation and stopping of indoor unit.Concentrate control
Device (or monitoring server) processed is connected with the collection control port of outdoor unit electric-controlled plate (or to be passed through hand in hand with the connection of internal-external machine
Mode be connected together), realize receive outdoor unit send information and to outdoor unit send control signal.Centralized Controller
(or monitoring server) has larger memory space, can store the data that outdoor unit is sent in time, Centralized Controller (or
Monitoring server) it can be shut down in time with outdoor unit communication, control outdoor unit when breaking down, record data is avoided to occur inclined
Difference.
The present embodiment illustrates metering method by taking full direct-current variable-frequency multi-connection machine as an example.Full direct-current variable-frequency multi-connection machine refers to
The motor that compressor, outdoor fan, indoor fan use all is the magneto of DC frequency-changing.
Multi-connected machine power consumption includes outdoor unit power consumption and indoor unit power consumption, and outdoor unit power consumption includes outdoor unit electric-controlled plate zero load work(
Consumption, compressor power consumption, outdoor fan power consumption, outdoor unit electrically-controlled valve power consumption, indoor unit power consumption include indoor fan power consumption, indoor unit
Electric-controlled plate no-load power consumption, electric expansion valve power consumption.During multi-connected machine heating operation, some indoor unit heating operations, some indoor units
In holding state.
The multi-connected machine heating operation divided gauging method of the present embodiment mainly comprises the following steps, shown in Figure 1.
Step S1：Obtain power of the every heating operation indoor unit in set period of time T.
The power of indoor unit mainly includes the power of indoor fan, the no-load power of indoor unit electric-controlled plate, electric expansion valve
Power.
According to formula Pn=PFn+WEn+Wfn, calculate Pn。
PnFor power of n-th heating operation indoor unit in set period of time T, it is calculated by indoor unit electric-controlled plate.
PFnIt, can be by the control of wind turbine for power of the wind turbine in set period of time T of n-th heating operation indoor unit
Circuit counting obtains, and is then sent to indoor unit electric-controlled plate.When machine does not set heating operation without heating needs or indoors, room
Inner blower is not run, and the power of the wind turbine is 0.
WEnFor no-load power of the electric-controlled plate in set period of time T of n-th heating operation indoor unit.
WfnFor power of the electric expansion valve in set period of time T of n-th heating operation indoor unit.
N=1,2,3 ... ..., N1, N1 are the quantity of the heating operation indoor unit in set period of time T.
Step S2：Obtain heat exchange amount of the every heating operation indoor unit in set period of time T.
Indoor unit electric-controlled plate is according to formula Hn=1.01Gn·(Toutn-Tain), calculate Hn。
Wherein, HnThe heat exchange amount (namely heating capacity) for being n-th heating operation indoor unit in set period of time T.
GnFor the air-supply quality stream under setting speed of the wind turbine in set period of time T of n-th heating operation indoor unit
Amount.G when wind turbine is inoperativen=0, G when wind turbine operatesnTo be more than 0 constant.GnValue determined according to rotation speed of fan, with wind turbine turn
Speed is corresponding, and rotating speed is bigger, GnValue is bigger.Default rotation speed of fan-GnCorresponding table is stored in the memory of indoor unit electric-controlled plate,
Need GnWhen, it can be obtained by tabling look-up, it is simple and convenient.
ToutnFor leaving air temp of n-th heating operation indoor unit at the air outlet in set period of time T.
TainFor the inlet air temperature of air inlet of n-th heating operation indoor unit in set period of time T.
ToutnAcquisition there are two types of scheme.As a kind of preferred design of the present embodiment, in the present embodiment, lead to
Cross formulaObtain the leaving air temp at air outlet
Toutn.The Tout obtained by the formulan, leaving air temp can be preferably characterized, avoids measurement error.
Wherein, KnTo exchange heat under heat exchanger heating condition of the wind turbine under setting speed of n-th heating operation indoor unit
Coefficient.KnIt is related with wind turbine model, and under same model, KnRelated with rotation speed of fan, rotation speed of fan is bigger, KnIt is bigger.In advance
If rotation speed of fan-coefficient of heat transfer KnCorresponding table is stored in the memory of indoor unit electric-controlled plate, is needing KnWhen, by tabling look-up i.e.
It can obtain, it is simple and convenient.
AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T.AnWith heat-exchanger type
It is number related, it is constant, is stored in the memory of indoor unit electric-controlled plate.
Tsat is the corresponding saturation temperature of Compressor Discharge Pressure in set period of time T；The computational methods of Tsat are：
Compressor Discharge Pressure is detected by pressure sensor first, then calculates the corresponding saturation temperature Tsat of pressure at expulsion.
TainIt is gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
As another preferred design of the present embodiment, for the ease of calculating heat exchange amount Hn, ToutnBy being laid in
The temperature sensor of the air inlet of n-th heating operation indoor unit obtains, TainBy being laid in n-th heating operation room
The temperature sensor of the air inlet of machine obtains.
When machine does not set heating operation without heating needs or indoors, heat exchange amount 0.
Step S3：Obtain power P of the outdoor unit in set period of time Tw。
The power of outdoor unit mainly includes the power of compressor, the power of outdoor fan, the unloaded work(of outdoor unit electric-controlled plate
The power of rate, outdoor unit electrically-controlled valve.
Power P of the outdoor unit in set period of time TwCalculation formula be：
Wherein, Pw1 be power of the compressor in set period of time T, Pw2 be work(of the outdoor fan in set period of time T
Rate can be calculated by the control circuit of wind turbine and be obtained, be then sent to outdoor unit electric-controlled plate；Exist for outdoor unit electrically-controlled valve
Power in set period of time T, L 1,2,3 ..., M, M are the quantity of outdoor unit electrically-controlled valve.Outdoor unit electrically-controlled valve includes outdoor
The electrically-controlled valves such as all solenoid valves of machine, expansion valve.
Since the no-load power consumption of outdoor unit electric-controlled plate averraged by whole indoor units, for follow-up convenience of calculation, herein
Calculate PwWhen not include outdoor unit electric-controlled plate no-load power.
In the present embodiment, compressor horsepower Pw1 calculation formula is：Pw1=Vqiq/ η.
Wherein, Vq, iq are the q shaft voltages and electric current of the real-time vector of compressor.
Obtain the three-phase input current i of compressorA、iB、iC, CLARK conversion, PARK conversion are carried out, is converted to vector controlled
Component iq, id.
Then d shaft voltages V is calculated by above formuladWith q shaft voltages Vq。
Wherein, R be compressor electric motor resistance, LqFor compressor electric motor q axle inductances, LdFor compressor electric motor d axle inductances, ωr
For compressor electric motor rotating speed；ψfFor compressor electric motor no-load electromotive force.
η is driven compressor module efficiency, and calculation formula is：
Compressor efficiency calculation formula is obtained by experimental verification.Wherein, A, B, C are fitting constant, pass through experimental simulation
It obtains.In the present embodiment, A=0.95, B=0.03, C=0.015.
Fmax, fmin are the peak frequency and minimum frequency that compressor can be run, and are constant.In the present embodiment,
Fmax=100HZ, fmin=20HZ.F is the frequency of compressor actual motion, and I0 is specified electricity of the compressor under current frequency
Stream.
The step realizes autonomous accounting outdoor unit power, and the calculating for follow-up indoor unit power consumption provides condition.
Step S4：Calculate total power consumption of the every heating operation indoor unit in set period of time T.
Heating operation indoor unit includes two states：Anti- cold wind state and normal heating state.
When anti-cold wind-warm syndrome angle value (such as 28 DEG C) of the corresponding saturation temperature Tsat≤setting of Compressor Discharge Pressure, judge
Heating operation indoor unit is in astable operation state, i.e., anti-cold wind state.
When anti-cold wind-warm syndrome angle value (such as 28 DEG C) of the corresponding saturation temperature Tsat ＞ settings of pressure at expulsion, heating fortune is judged
Row indoor unit is in steady operational status, i.e., normally heats state.
When heating operation indoor unit is anti-cold wind state, indoor fan is not run, indoor heat exchanger and its surrounding air
For free convection and radiation heat transfer, calculation formula is：
When heating operation indoor unit for normal heating state when, indoor fan normal operation, indoor heat exchanger and its around
Air is forced-convection heat transfer, and calculation formula is：
Wherein, PznFor general power of n-th heating operation indoor unit in set period of time T.
WznFor total power consumption of n-th heating operation indoor unit in set period of time T.
Ww0 is no-load power of the outdoor unit electric-controlled plate in set period of time T.
AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T.AnWith heat-exchanger type
It is number related, it is constant, is stored in the memory of indoor unit electric-controlled plate.
AzFor total heat exchange area of heat exchanger of all heating operation indoor units in set period of time T.
That is, Az=A1+A2+A3+......+AN1.By outdoor unit electric-controlled plate to the heat exchange area of all heating operation indoor units
Summation, calculates Az。
HzFor total heat exchange amount of all heating operation indoor units in set period of time T.
That is, Hz=H1+H2+H3+......+HN1。
N2 is the quantity of the indoor unit of holding state.N1+N2 is the quantity of all indoor units.
The P that indoor unit electric-controlled plate will calculaten、Hn、AnOutdoor unit electric-controlled plate is sent to, outdoor unit electric-controlled plate calculates
Wzn。
It understands, during multi-connected machine heating operation, no-load power W of the outdoor unit electric-controlled plate in set period of time Tw0 by owning
Indoor unit mean allocation,It is divided in portion by heating operation indoor unit.When heating operation indoor unit
During in anti-cold wind state, it is divided in portion according to heat exchange area sizeWhen in heating operation room
When machine is in normal heating state, it is divided in portion according to heat exchange amount (heating capacity) sizeIt carries
The high fairness and accuracy of household metering.
The no-load power of outdoor unit electric-controlled plate is substantially equivalent to the standby power of outdoor unit, and therefore, it is necessary to all interiors
Machine is divided equally, to improve the accuracy and fairness of household metering.When heating operation indoor unit is anti-cold wind state, heating operation
Indoor unit is divided in portion according to heat exchange area sizeHeat exchange area calculates simple, easily real
It is existing；When heating operation indoor unit is normally heats state, heating operation indoor unit is divided in portion according to heat exchange amount sizeHeat exchange amount measuring and calculating is accurate so that accuracy is high when a point family is distributed.
In multi-connected machine heating operation, the calculation formula of total power consumption of the holding state indoor unit in set period of time T is：Wherein, WE1jFor jth platform holding state indoor unit electric-controlled plate in set period of time T
No-load power, Wf1jFor power of the electric expansion valve in set period of time T of jth platform holding state indoor unit, j=1,2,
3 ... ..., N2, N2 are the quantity of holding state indoor unit.
During multi-connected machine heating operation, outdoor unit electric-controlled plate no-load power consumption (WwIt 0T) averraged by all indoor units, room
Compressor power consumption, outdoor fan power consumption, the outdoor unit electrically-controlled valve power consumption of outer machine, i.e. PwT, by the indoor unit point of heating operation
Load is divided in proportion according to the heat exchange area size (during anti-cold wind state) or heat exchange amount size of indoor unit (during normal heating state)
Match somebody with somebody；That is, according to the accounting of heat exchange area of the every heating operation indoor unit in set period of time or heat exchange amount by outdoor unit work(
Consume PwT is distributed to every heating operation indoor unit.
In multi-connected machine heating process, after each set period of time T calculates the total power consumption of indoor unit, preserve to room
In the memory of outer Electrical Control plate, and it is uploaded to Centralized Controller (or service monitor) storage.
In a metering period, the indoor unit total power consumption in each set period of time is calculated, and calculates every indoor unit
Cumulative power consumption and.In the present embodiment, set period of time T is 1 second, in order to power consumption calculation.
For example, in a metering period, outdoor unit electric-controlled plate resets (t=0) in electrifying startup, time, starts timing,
Every indoor unit power integration value W0 that last time is run in the metering period is read out of memory.
In t=T, according to step S1 to S4, n-th heating operation indoor unit is calculated in first set period of time T
Interior total power consumption Wzn(t=T), cumulative power consumption value is Wzn(t=T)+W0.
In t=2T, according to step S1 to S4, n-th heating operation indoor unit is calculated in second set period of time T
Interior total power consumption Wzn(t=2T), cumulative power consumption value is Wzn(t=2T)+Wzn(t=T)+W0.
And so on, until this time heating operation terminates this indoor unit.
The multi-connected machine heating operation divided gauging method of the present embodiment obtains every heating operation indoor unit in setting time
Power and heat exchange amount in section T, obtain power of the outdoor unit in set period of time T, outdoor unit electric-controlled plate no-load power consumption are put down
All indoor units are respectively assigned to, according to heat exchange area accounting (anti-cold wind of the every heating operation indoor unit in set period of time
During state) or heat exchange amount accounting when state (normal heating) by compressor of outdoor unit power consumption, outdoor fan power consumption, outdoor Electrical Control
Valve power consumption distributes the total work for every heating operation indoor unit, calculating every heating operation indoor unit in set period of time T
Consumption；Improve the fairness and accuracy of household metering；Moreover, the metering method of the present embodiment, do not increase multi-connected machine hardware into
This, without using kilowatt-hour meter, realizes that multi-connected machine energy consumption point family is distributed, household metering cost is reduced, convenient for the popularization of household metering
Using；Moreover, the method for the present embodiment, simple and practicable, it is easy to implement.
Outdoor unit electric-controlled plate starts clock signal and Centralized Controller (or service monitor), interior after electrifying startup
Electrical Control plate is communicated, and correction outdoor unit clock, indoor unit clock are consistent with Centralized Controller (or service monitor).It is outdoor
Electrical Control plate reads the aggregate-value of every indoor unit power consumption of early period out of its reservoir, be sent to Centralized Controller (or service
Monitor), Centralized Controller (or service monitor) tires out the power for receiving the corresponding indoor unit that aggregate-value is stored with itself
Evaluation is compared, and if there is no difference, then data is stored since original storage region；If there is difference, then will connect
The aggregate-value received is stored in newly-built memory block, and difference and time data are stored in Centralized Controller (or service monitoring
Device) exceptions area, convenient for subsequently searching reason of discrepancies.Then Centralized Controller (or service monitor), which is sent, allows indoor unit to open
The signal (or indoor unit starting-up signal) of machine gives outdoor unit electric-controlled plate, outdoor unit electric-controlled plate according to the starting-up signal received,
After standby 3min indoor unit is controlled to bring into operation, then perform step S1 to S4, carry out household metering.
Based on the design of above-mentioned multi-connected machine heating operation divided gauging method, the present embodiment also proposed a kind of multi-joint mechanism
Heat operation household metering system, multi-connected machine include outdoor unit and the multiple indoor units being connected respectively with outdoor unit, the metering
System mainly includes：Indoor unit power obtaining module, indoor unit heat exchange amount obtain module, outdoor unit power obtaining module, heating
It runs indoor unit total power consumption and obtains module etc., it is shown in Figure 2.
Indoor unit power obtaining module, for obtaining power of the every heating operation indoor unit in set period of time T：Pn
=PFn+WEn+Wfn, wherein, PnFor power of n-th heating operation indoor unit in set period of time T, PFnFor n-th heating
Run power of the wind turbine of indoor unit in set period of time T, WEnIt is being set for the electric-controlled plate of n-th heating operation indoor unit
No-load power in period T, WfnFor work(of the electric expansion valve in set period of time T of n-th heating operation indoor unit
Rate, n=1,2,3 ... ..., N1, N1 are the quantity of heating operation indoor unit.
Indoor unit heat exchange amount obtains module, for obtaining heat exchange of the every heating operation indoor unit in set period of time T
Amount：Hn=1.01Gn·(Toutn-Tain)；Wherein, HnFor heat exchange of n-th heating operation indoor unit in set period of time T
Amount；GnFor the air-supply mass flow under setting speed of the wind turbine in set period of time T of n-th heating operation indoor unit；
ToutnFor leaving air temp of n-th heating operation indoor unit at the air outlet in set period of time T；TainFor n-th heating
Run the inlet air temperature of air inlet of the indoor unit in set period of time T.
Outdoor unit power obtaining module, for obtaining power P of the outdoor unit in set period of time Tw：Wherein, Pw1 be power of the compressor in set period of time T, Pw2 are setting for outdoor fan
Power in period T,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,3 ..., M, M is
The quantity of outdoor unit electrically-controlled valve.
Outdoor unit power obtaining module includes compressor horsepower computing unit, efficiency calculation unit etc..Compressor horsepower meter
Unit is calculated, for passing through formula Pw1=Vqiq/ η, calculate Pw1；Wherein, Vq, iq are the q shaft voltages and electric current of compressor.
Efficiency calculation unit, for passing through formulaη is calculated,
In, A, B, C are fitting constant, and fmax, fmin are the peak frequency and minimum frequency that compressor can be run, and f is real for compressor
The frequency of border operation, I0 are rated current of the compressor under current frequency.
Heating operation indoor unit total power consumption obtains module, for calculating every heating operation indoor unit in set period of time T
Interior total power consumption：When n-th heating operation indoor unit is anti-cold wind state：N-th
When platform heating operation indoor unit normally heats state：Wherein, PznFor n-th system
General power of the heat operation indoor unit in set period of time T；N2 is the quantity of the indoor unit of holding state；Ww0 is outdoor electromechanical
Control no-load power of the plate in set period of time T；AnFor heat exchanger of n-th heating operation indoor unit in set period of time T
Heat exchange area；AzFor total heat exchange area of heat exchanger of all heating operation indoor units in set period of time T；HzIt is all
Total heat exchange amount of the heating operation indoor unit in set period of time T.
The system also includes leaving air temp acquisition module, leaving air temp acquisition module is used to pass through formula
Obtain Toutn；Wherein, KnFor n-th
The coefficient of heat transfer under heat exchanger heating condition of the wind turbine of heating operation indoor unit under setting speed；AnFor n-th heating operation
The heat exchange area of heat exchanger of the indoor unit in set period of time T；Tsat is the Compressor Discharge Pressure in set period of time T
Corresponding saturation temperature detects Compressor Discharge Pressure by pressure sensor first, then to calculate pressure at expulsion corresponding
Saturation temperature Tsat；TainIt is gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
The system also includes standby indoor unit total power consumptions to obtain module, and standby indoor unit total power consumption obtains module and is used for
During multi-connected machine heating operation, total power consumption of the every holding state indoor unit in set period of time T is obtained；Calculation formula is：Wherein, WE1jFor jth platform holding state indoor unit electric-controlled plate in set period of time T
No-load power, Wf1jFor power of the electric expansion valve in set period of time T of jth platform holding state indoor unit, j=1,2,
3 ... ..., N2, N2 are the quantity of holding state indoor unit.
The course of work of specific multi-connected machine heating operation household metering system, in above-mentioned multi-connected machine heating operation point
It is described in detail in the metering method of family, it will not go into details herein.
The multi-connected machine heating operation household metering system of the present embodiment obtains every heating operation indoor unit in setting time
Power and heat exchange amount in section T, obtain power of the outdoor unit in set period of time T, outdoor unit electric-controlled plate no-load power consumption are put down
All indoor units are respectively assigned to, according to heat exchange area accounting (anti-cold wind of the every heating operation indoor unit in set period of time
During state) or heat exchange amount accounting when state (normal heating) by compressor of outdoor unit power consumption, outdoor fan power consumption, outdoor Electrical Control
Valve power consumption distributes the total work for every heating operation indoor unit, calculating every heating operation indoor unit in set period of time T
Consumption；Improve the fairness and accuracy of household metering；Moreover, the metering method of the present embodiment, do not increase multi-connected machine hardware into
This, without using kilowatt-hour meter, realizes that multi-connected machine energy consumption point family is distributed, household metering cost is reduced, convenient for the popularization of household metering
Using；Moreover, the method for the present embodiment, simple and practicable, it is easy to implement.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited；Although with reference to foregoing reality
Example is applied the present invention is described in detail, it for those of ordinary skill in the art, still can be to foregoing implementation
Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic；And these are changed or replace
It changes, the essence of appropriate technical solution is not made to depart from the spirit and scope of claimed technical solution of the invention.
Claims (9)
1. a kind of multi-connected machine heating operation divided gauging method, the multi-connected machine includes outdoor unit and distinguishes with the outdoor unit
Multiple indoor units of connection, it is characterised in that：The described method includes：
(1) power of the every heating operation indoor unit in set period of time T is obtained：
Pn=PFn+WEn+Wfn,
Wherein,
PnFor power of n-th heating operation indoor unit in set period of time T,
PFnFor power of the wind turbine in set period of time T of n-th heating operation indoor unit,
WEnFor no-load power of the electric-controlled plate in set period of time T of n-th heating operation indoor unit,
WfnFor power of the electric expansion valve in set period of time T of n-th heating operation indoor unit, n=1,2,3 ... ...,
N1, N1 are the quantity of heating operation indoor unit；
(2) heat exchange amount of the every heating operation indoor unit in set period of time T is obtained：
Hn=1.01Gn·(Toutn-Tain)；
Wherein, HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；
GnFor the air-supply mass flow under setting speed of the wind turbine in set period of time T of n-th heating operation indoor unit；
ToutnFor leaving air temp of n-th heating operation indoor unit at the air outlet in set period of time T；
TainFor the inlet air temperature of air inlet of n-th heating operation indoor unit in set period of time T；
(3) power P of the outdoor unit in set period of time T is obtainedw：
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Wherein, Pw1 be power of the compressor in set period of time T, Pw2 be power of the outdoor fan in set period of time T,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,3 ..., M, M is the number of outdoor unit electrically-controlled valve
Amount；
(4) total power consumption of the every heating operation indoor unit in set period of time T is calculated：
When heating operation indoor unit is anti-cold wind state：
When heating operation indoor unit normally heats state：
Wherein, PznFor general power of n-th heating operation indoor unit in set period of time T；
N2 is the quantity of the indoor unit of holding state；
Ww0 is no-load power of the outdoor unit electric-controlled plate in set period of time T；
AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；
AzFor total heat exchange area of heat exchanger of all heating operation indoor units in set period of time T；
HzFor total heat exchange amount of all heating operation indoor units in set period of time T.
2. according to the method described in claim 1, it is characterized in that：By the air inlet for being laid in n-th heating operation indoor unit
Temperature sensor acquisition at mouthful obtains Toutn, passed by being laid in the temperature of air inlet of n-th heating operation indoor unit
Sensor acquisition obtains Tain。
3. according to the method described in claim 1, it is characterized in that：
Pass through formulaObtain Toutn；
Wherein, KnFor the coefficient of heat transfer under heat exchanger heating condition of the wind turbine under setting speed of n-th heating operation indoor unit；
AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；
Tsat is the corresponding saturation temperature of Compressor Discharge Pressure in set period of time T, is examined first by pressure sensor
Compressor Discharge Pressure is measured, then calculates the corresponding saturation temperature Tsat of pressure at expulsion；
TainIt is gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
4. according to the method described in claim 1, it is characterized in that：The method further includes：In multi-connected machine heating operation, obtain
Obtain total power consumption of the every holding state indoor unit in set period of time T；
Calculation formula is：
Wherein, WE1jFor no-load power of the electric-controlled plate in set period of time T of jth platform holding state indoor unit,
Wf1jFor power of the electric expansion valve in set period of time T of jth platform holding state indoor unit, j=1,2,3 ... ...,
N2, N2 are the quantity of holding state indoor unit.
5. method according to any one of claim 1 to 4, it is characterised in that：
Pass through formula Pw1=Vqiq/ η, calculate Pw1；
Wherein, Vq, iq are the q shaft voltages and electric current of compressor；
η is driven compressor module efficiency, and calculation formula is：
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Wherein, A, B, C are fitting constant, and fmax, fmin are the peak frequency and minimum frequency that compressor can be run, and f is pressure
The frequency of contracting machine actual motion, I0 are rated current of the compressor under current frequency.
6. a kind of multi-connected machine heating operation household metering system, the multi-connected machine includes outdoor unit and distinguishes with the outdoor unit
Multiple indoor units of connection, it is characterised in that：The system comprises：
Indoor unit power obtaining module, for obtaining power of the every heating operation indoor unit in set period of time T：Pn=PFn
+WEn+Wfn, wherein, PnFor power of n-th heating operation indoor unit in set period of time T, PFnFor n-th heating operation
Power of the wind turbine of indoor unit in set period of time T, WEnFor n-th heating operation indoor unit electric-controlled plate in setting time
No-load power in section T, WfnFor power of the electric expansion valve in set period of time T of n-th heating operation indoor unit, n=
1,2,3 ... ..., N1, N1 are the quantity of heating operation indoor unit；
Indoor unit heat exchange amount obtains module, for obtaining heat exchange amount of the every heating operation indoor unit in set period of time T：Hn
=1.01Gn·(Toutn-Tain)；Wherein, HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；Gn
For the air-supply mass flow under setting speed of the wind turbine in set period of time T of n-th heating operation indoor unit；ToutnFor
Leaving air temp of n-th heating operation indoor unit at the air outlet in set period of time T；TainFor n-th heating operation room
The inlet air temperature of air inlet of the interior machine in set period of time T；
Outdoor unit power obtaining module, for obtaining power P of the outdoor unit in set period of time Tw：Wherein, Pw1 be power of the compressor in set period of time T, Pw2 are setting for outdoor fan
Power in period T,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,3 ..., M, M is
The quantity of outdoor unit electrically-controlled valve；
Heating operation indoor unit total power consumption obtains module, for calculating every heating operation indoor unit in set period of time T
Total power consumption：When heating operation indoor unit is anti-cold wind state：Work as heating operation
When indoor unit normally heats state：Wherein, PznFor in n-th heating operation room
General power of the machine in set period of time T；N2 is the quantity of the indoor unit of holding state；Ww0 is setting for outdoor unit electric-controlled plate
No-load power in period T；AnFor the heat exchange area of heat exchanger of n-th heating operation indoor unit in set period of time T；
AzFor total heat exchange area of heat exchanger of all heating operation indoor units in set period of time T；HzFor in all heating operation rooms
Total heat exchange amount of the machine in set period of time T.
7. system according to claim 6, it is characterised in that：The system also includes：
Leaving air temp acquisition module, for passing through formula
Obtain Toutn；Wherein, KnFor n-th heating fortune
The coefficient of heat transfer under heat exchanger heating condition of the wind turbine of row indoor unit under setting speed；AnFor n-th heating operation indoor unit
The heat exchange area of heat exchanger in set period of time T；Tsat is that the Compressor Discharge Pressure in set period of time T is corresponding
Saturation temperature detects Compressor Discharge Pressure by pressure sensor first, then calculates the corresponding saturation temperature of pressure at expulsion
Spend Tsat；TainIt is gathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
8. system according to claim 6, it is characterised in that：The system also includes：
Standby indoor unit total power consumption obtains module, exists in multi-connected machine heating operation, obtaining every holding state indoor unit
Total power consumption in set period of time T；Calculation formula is：Wherein, WE1jIt is standby for jth platform
No-load power of the electric-controlled plate of state indoor unit in set period of time T, Wf1jElectronics for jth platform holding state indoor unit is swollen
Power of the swollen valve in set period of time T, j=1,2,3 ... ..., N2, N2 are the quantity of holding state indoor unit.
9. the system according to any one of claim 6 to 8, it is characterised in that：The outdoor unit power obtaining module bag
It includes：
Compressor horsepower computing unit, for passing through formula Pw1=Vqiq/ η, calculate Pw1；Wherein, Vq, iq are compressor
Q shaft voltages and electric current；
Efficiency calculation unit, for passing through formula
η is calculated, wherein, A, B, C are fitting constant,
Fmax, fmin are the peak frequency and minimum frequency that compressor can be run, and f is the frequency of compressor actual motion, and I0 is pressure
Rated current of the contracting machine under current frequency.
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| CN201711051044.7A CN108050645A (en) | 2017-10-31 | 2017-10-31 | A kind of multi-connected machine heating operation divided gauging method and system |
| PCT/CN2018/082113 WO2019085391A1 (en) | 2017-10-31 | 2018-04-08 | Method and system for separate metering during heating operation of multi-split air conditioner |
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| CN201711051044.7A CN108050645A (en) | 2017-10-31 | 2017-10-31 | A kind of multi-connected machine heating operation divided gauging method and system |
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| CN109855245A (en) * | 2019-02-13 | 2019-06-07 | 青岛海尔空调电子有限公司 | Multi-online air-conditioning system and its heat exchange amount calculation method |
| CN110160213A (en) * | 2019-04-26 | 2019-08-23 | 青岛海尔空调电子有限公司 | The metering method of machine power consumption in multi-connected air conditioner device |
| CN111667637A (en) * | 2020-05-11 | 2020-09-15 | 中外运冷链物流有限公司 | Method for calculating electricity charge of single refrigeration house of centralized refrigeration system |
| WO2020238183A1 (en) * | 2019-05-24 | 2020-12-03 | 青岛海尔空调电子有限公司 | Multi-split air conditioning system and heat exchange calculation amount method therefor |
| CN112762574A (en) * | 2021-01-21 | 2021-05-07 | 广东美的暖通设备有限公司 | Indoor unit power consumption detection method, heat recovery multi-split air conditioner, storage medium and device |
| CN113237258A (en) * | 2021-05-31 | 2021-08-10 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method thereof |
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| CN114151932A (en) * | 2021-11-22 | 2022-03-08 | 青岛海信日立空调系统有限公司 | Energy consumption monitoring platform of multi-split system |
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| CN109855245A (en) * | 2019-02-13 | 2019-06-07 | 青岛海尔空调电子有限公司 | Multi-online air-conditioning system and its heat exchange amount calculation method |
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| CN112762574A (en) * | 2021-01-21 | 2021-05-07 | 广东美的暖通设备有限公司 | Indoor unit power consumption detection method, heat recovery multi-split air conditioner, storage medium and device |
| CN112762574B (en) * | 2021-01-21 | 2022-02-11 | 广东美的暖通设备有限公司 | Indoor unit power consumption detection method, heat recovery multi-split air conditioner, storage medium and device |
| CN113237258B (en) * | 2021-05-31 | 2023-06-20 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method thereof |
| CN113237258A (en) * | 2021-05-31 | 2021-08-10 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method thereof |
| CN113465140B (en) * | 2021-06-08 | 2022-08-02 | 深圳市英威腾网能技术有限公司 | Air conditioner monitoring method and device, air conditioner controller and storage medium |
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| CN114151932A (en) * | 2021-11-22 | 2022-03-08 | 青岛海信日立空调系统有限公司 | Energy consumption monitoring platform of multi-split system |
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Application publication date: 20180518 |