CN108006893A - 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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Abstract
The invention discloses a kind of multi-connected machine heating operation divided gauging method and system, 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, outdoor unit power consumption is distributed to the total power consumption for every heating operation indoor unit, calculating every heating operation indoor unit in set period of time T according to the accounting of heat exchange amount of the every heating operation indoor unit in set period of time；The metering method of the present embodiment, multi-connected machine hardware cost is not increased, without using kilowatt-hour meter, realize that multi-connected machine energy consumption point family is distributed, reduce household metering cost, indoor unit improves the fairness and accuracy of household metering, easy to the popularization and application of household metering according to heat exchange amount pro rata distribution outdoor unit power consumption；Moreover, the method for the present embodiment, simple and practicable, it is easy to implement.
Description
Technical field
The invention belongs to air-conditioning technical field, is 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 installed on different application space
Heating (heat pump) system.Multi-connected machine saves installation space, energy conservation and environmental protection, easy to the advantage such as control and manage, in business with it
Widely applied with office space.
The household cost allocation system of multi-connected machine has certain demand in some large and medium-sized commercial locations, 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 ... ..., N, N 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：
When heating operation indoor unit is anti-cold wind state：Hn=Kn·An·(Tsat-Tain)1/4；
When heating operation indoor unit is normally heats state：Hn=1.01Gn·(Toutn-Tain)；
Wherein,
HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；
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；
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；
Tsat is the corresponding saturation temperature of Compressor Discharge Pressure in set period of time T；
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；
(4) total power consumption of the every heating operation indoor unit in set period of time T is calculated：
Wherein, PznFor general power of n-th heating operation indoor unit 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 collection of air inlet of n-th heating operation indoor unitn, pass through pressure
Sensor detects Compressor Discharge Pressure, then calculates the corresponding saturation temperature Tsat of pressure at expulsion.
Further, formula is passed throughObtain
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 collection obtain.
Further, formula is passed throughCalculate Pw；Wherein, Pw1 is compressor
Power in set period of time T, Pw2 be power of the outdoor fan in set period of time T, Ww0 is setting for outdoor unit electric-controlled plate
The no-load power fixed time in section 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.
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 are 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 ... ..., N, N are the quantity of heating operation indoor unit；Indoor unit heat exchange amount
Module is obtained, for obtaining heat exchange amount of the every heating operation indoor unit in set period of time T：When heating operation indoor unit is
During anti-cold wind state：Hn=Kn·An·(Tsat-Tain)1/4；When heating operation indoor unit is normally heats state：Hn=
1.01·Gn·(Toutn-Tain)；Wherein, HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；KnFor
The coefficient of heat transfer under heat exchanger heating condition of the wind turbine of n-th heating operation indoor unit under setting speed；AnFor n-th heating
Run the heat exchange area of heat exchanger of the indoor unit in set period of time T；GnSet for the wind turbine of n-th heating operation indoor unit
Air-supply mass flow under the setting speed fixed time in section T；Tsat is the Compressor Discharge Pressure pair in set period of time T
The saturation temperature answered；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；Outdoor acc power obtains mould
Block, for obtaining power P of the outdoor unit in set period of time Tw；Heating operation indoor unit total power consumption obtains module, based on
Calculate total power consumption of the every heating operation indoor unit in set period of time T：Wherein, PznFor n-th
General power of the platform heating operation indoor unit in set period of time T；HzIt is all heating operation indoor units in set period of time T
Total 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；TainGathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation indoor unit.
Further, the outdoor unit power obtaining module is specifically used for：Pass through formula
Calculate Pw；Wherein, Pw1 is work(of the compressor in set period of time T
Rate, Pw2 be power of the outdoor fan in set period of time T, Ww0 is unloaded work(of the outdoor unit electric-controlled plate 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.
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：Count 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, according to the accounting of heat exchange amount of the every heating operation indoor unit in set period of time by outdoor
Machine 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；The metering method of the present embodiment, does not increase multi-connected machine hardware cost, without using kilowatt-hour meter, realizes multi-connected machine energy consumption point family point
Match somebody with somebody, reduce household metering cost, indoor unit improves the justice of household metering according to heat exchange amount pro rata distribution outdoor unit power consumption
Property and accuracy, easy to the popularization and application of household metering；Moreover, the method for the present embodiment, simple and practicable, it is easy to implement.
After the 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.
Brief 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.
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；Outdoor unit
Power consumption is undertaken by the indoor unit of heating operation, is divided in portion according to the heating capacity of indoor unit, improves the public affairs of household metering
Levelling and accuracy.
Multi-connected machine includes outdoor unit, multiple indoor units, Centralized Controller (or monitoring server)；Outdoor unit passes through refrigerant pipe
Road is connected with each indoor unit respectively, and it is swollen that an electronics is laid with the refrigerant pipeline that each indoor unit is connected 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 with 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, avoid record data from occurring 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；All power consumptions of outdoor unit are all shared by the indoor unit of heating operation, according to the heat exchange amount size of indoor unit
It is allocated in proportion.
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。
Wherein, PnFor power of n-th heating operation indoor unit in set period of time T, calculated by indoor unit electric-controlled plate
Draw.
PFn, 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, i.e.,
The indoor unit of non-heating state, indoor fan are 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 ... ..., N, N 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.
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, indoor unit electric-controlled plate is according to formula
Hn=Kn·An·(Tsat-Tain)1/4, calculate Hn。
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 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.
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.AnWith heat-exchanger type
It is number related, it is constant, is stored in the memory of indoor unit electric-controlled plate.
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 operatesnFor the constant more than 0.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.
Tsat is the corresponding saturation temperature of Compressor Discharge Pressure in set period of time T.
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 have two schemes.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.
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.
TainGathered 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；Compressor Discharge Pressure is detected by pressure sensor, then calculates exhaust
The corresponding saturation temperature Tsat of pressure.
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 is 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 obtained, be then sent to outdoor unit electric-controlled plate；Ww0 is setting for outdoor unit electric-controlled plate
The no-load power fixed time in section 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.Outdoor unit electrically-controlled valve includes the electrically-controlled valves such as all solenoid valves of outdoor unit, expansion valve.
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 is 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
Obtain.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.
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.
HzFor total heat exchange amount of all heating operation indoor units in set period of time T.
That is, Hz=H1+H2+H3+......+HN。
The P that indoor unit electric-controlled plate will calculatenAnd HnOutdoor unit electric-controlled plate is sent to, outdoor unit electric-controlled plate calculates Wzn。
During multi-connected machine heating operation, since the wind turbine of holding state indoor unit is inoperative, holding state indoor unit
Power consumption includes indoor unit electric-controlled plate no-load power consumption and electric expansion valve power consumption.
During multi-connected machine heating operation, all power consumptions of outdoor unit are all shared by the indoor unit of heating operation, according to interior
Heat exchange amount (heating capacity) size proportional assignment of machine.That is, according to every heating operation indoor unit in set period of time
The accounting of heat exchange amount distributes outdoor unit power consumption to every heating operation indoor unit.
Since the indoor unit of holding state does not use outdoor unit, all power consumptions of outdoor unit are all by heating
The indoor unit of operation is distributed according to heat exchange amount size, improves the accuracy and fairness of household metering.
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 calculate 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, are existed according to every heating operation indoor unit
The accounting of heat exchange amount in set period of time distributes outdoor unit power consumption to every heating operation indoor unit, calculates every heating
Run total power consumption of the indoor unit in set period of time T；The metering method of the present embodiment, does not increase multi-connected machine hardware cost, no
Using kilowatt-hour meter, realize that multi-connected machine energy consumption point family is distributed, reduce household metering cost, indoor unit is according to heat exchange amount pro rata distribution
Outdoor unit power consumption, improves the fairness and accuracy of household metering, easy to the popularization and application of household metering；Moreover, this implementation
The method of example, it is 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 holder, 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
Received aggregate-value is stored in newly-built memory block, and difference and time data are stored in Centralized Controller (or service monitoring
Device) exceptions area, easy to subsequently search 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,
Control indoor unit to bring into operation after standby 3min, 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
Run indoor unit total power consumption and obtain 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, WEnSet 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 ... ..., N, N 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：When heating operation indoor unit is anti-cold wind state：Hn=Kn·An·(Tsat-Tain)1/4；When heating operation indoor unit is
During normal heating state：Hn=1.01Gn·(Toutn-Tain)；Wherein, HnBe n-th heating operation indoor unit setting when
Between heat exchange amount in section T；KnTo be changed under heat exchanger heating condition of the wind turbine under setting speed of n-th heating operation indoor unit
Hot coefficient；AnFor the heat exchange area of heat exchanger 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；Tsat is in set period of time T
The corresponding saturation temperature of interior Compressor Discharge Pressure；ToutnIt is n-th heating operation indoor unit in set period of time T
Leaving air temp at air outlet；TainIt is air inlet of n-th heating operation indoor unit in set period of time T into wind-warm syndrome
Degree.
Outdoor unit power obtaining module, for obtaining power P of the outdoor unit in set period of time Tw.The outdoor unit work(
Rate obtains module and is specifically used for：Pass through formulaCalculate Pw；Wherein, Pw1 is compressor
Power in set period of time T, Pw2 be power of the outdoor fan in set period of time T, Ww0 is setting for outdoor unit electric-controlled plate
The no-load power fixed time in section 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.
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, its
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 is 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：Wherein, PznIt is n-th heating operation indoor unit in set period of time T
General power；HzFor total heat exchange amount of all heating operation indoor units 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；TainGathered and obtained by the temperature sensor for the air inlet for being laid in n-th heating operation 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, are existed according to every heating operation indoor unit
The accounting of heat exchange amount in set period of time distributes outdoor unit power consumption to every heating operation indoor unit, calculates every heating
Run total power consumption of the indoor unit in set period of time T；The metering method of the present embodiment, does not increase multi-connected machine hardware cost, no
Using kilowatt-hour meter, realize that multi-connected machine energy consumption point family is distributed, reduce household metering cost, indoor unit is according to heat exchange amount pro rata distribution
Outdoor unit power consumption, improves the fairness and accuracy of household metering, easy to the popularization and application of household metering；Moreover, this implementation
The method of example, it is 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, for those of ordinary skill in the art, still can be to foregoing implementation
Technical solution described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replace
Change, the essence of appropriate technical solution is departed 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 ... ..., N, N 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：
When heating operation indoor unit is anti-cold wind state：Hn=Kn·An·(Tsat-Tain)1/4；
When heating operation indoor unit is normally heats state：Hn=1.01Gn·(Toutn-Tain)；
Wherein,
HnFor heat exchange amount of n-th heating operation indoor unit in set period of time T；
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；
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；
Tsat is the corresponding saturation temperature of Compressor Discharge Pressure in set period of time T；
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；
(4) total power consumption of the every heating operation indoor unit in set period of time T is calculated：
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Wherein, PznFor general power of n-th heating operation indoor unit 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 inlet air for being laid in n-th heating operation indoor unit
Temperature sensor collection at mouthful obtains Toutn, passed by being laid in the temperature of air inlet of n-th heating operation indoor unit
Sensor collection obtains Tain, Compressor Discharge Pressure is detected by pressure sensor, then to calculate pressure at expulsion corresponding full
With temperature Tsat.
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；
TainGathered 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 in any one of claims 1 to 3, it is characterised in that：
Pass through formulaCalculate Pw；
Wherein, Pw1 is power of the compressor in set period of time T, Pw2 be power of the outdoor fan in set period of time T,
Ww0 is no-load power of the outdoor unit electric-controlled plate in set period of time T,It is outdoor unit electrically-controlled valve in set period of time T
Interior power, L 1,2,3 ..., M, M are the quantity of outdoor unit electrically-controlled valve.
5. according to the method described in claim 4, it is characterized 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 ... ..., N, N 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：When
When heating operation indoor unit is anti-cold wind state：Hn=Kn·An·(Tsat-Tain)1/4；When heating operation indoor unit is normal
During heating state：Hn=1.01Gn·(Toutn-Tain)；Wherein, HnIt is n-th heating operation indoor unit in set period of time T
Interior heat exchange amount；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；GnFor n-th heating operation
Air-supply mass flow under setting speed of the wind turbine of indoor unit in set period of time T；Tsat is in set period of time T
The corresponding saturation temperature of Compressor Discharge Pressure；ToutnFor outlet air of n-th heating operation indoor unit in set period of time T
Leaving air temp at mouthful；TainFor the inlet air temperature of air inlet of n-th heating operation 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；
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：Wherein, PznFor total work of n-th heating operation indoor unit in set period of time T
Rate；HzFor total heat exchange amount of all heating operation indoor units 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；TainGathered 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 outdoor unit power obtaining module is specifically used for：
Pass through formulaCalculate Pw；Wherein, Pw1 for compressor in set period of time T
Power, Pw2 be power of the outdoor fan in set period of time T, Ww0 is sky of the outdoor unit electric-controlled plate in set period of time T
Carry power,For power of the outdoor unit electrically-controlled valve in set period of time T, L 1,2,3 ..., M, M is outdoor Electrical Control
The quantity of valve.
9. system according to claim 8, it is characterised in that：The outdoor unit power obtaining module 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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