CN105299845A - Virtual running parameter detecting method and device of air conditioner system - Google Patents

Virtual running parameter detecting method and device of air conditioner system Download PDF

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CN105299845A
CN105299845A CN201510815445.XA CN201510815445A CN105299845A CN 105299845 A CN105299845 A CN 105299845A CN 201510815445 A CN201510815445 A CN 201510815445A CN 105299845 A CN105299845 A CN 105299845A
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air
temperature
enthalpy
conditioning
operational model
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CN105299845B (en
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宋分平
侯泽飞
吴空
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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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
    • 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
    • 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
    • F24F11/56—Remote control
    • F24F11/59—Remote control for presetting

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a virtual running parameter detecting method of an air conditioner system. A parameter operational model of an air conditioner is established according to the incidence relation between the temperature of the preset position of the air conditioner and to-be-detected running parameters; when the air conditioner runs, the temperature of the preset position of the air conditioner is collected; and the to-be-detected running parameters are output according to the temperature of the preset position of the air conditioner and the parameter operational model. The invention further discloses a virtual running parameter detecting device of the air conditioner system. The to-be-detected value during running of the air conditioner can be obtained without using multiple metering tools so as to detect the state of the air conditioner, the detecting cost of the air conditioner is reduced, and the detecting stability and precision of the air conditioner are improved.

Description

Air-conditioning system operational factor virtual detection method and device
Technical field
The present invention relates to air-conditioning technical field, particularly relate to air-conditioning system operational factor virtual detection method and device.
Background technology
Along with the development of technology, the researcher of field of air conditioning is also constantly attempting the quality and the Consumer's Experience that are improved air-conditioning products by various method.Due to air-conditioning in use, various fault may be there is, therefore, air-conditioning state and potential problems can be understood in time, rapid location can be diagnosed in time when a failure occurs it, reduction product maintenance cost, raising product maintenance efficiency, enhancing CSAT, further Improving The Quality of Products are had very great help.
In prior art, domestic patent " based on the air-conditioning fault diagnosis system and method for data fusion under environment of internet of things " proposes a kind of detection method and mainly gathers the information such as the running status of air-conditioning equipment and parameter, then the information collected is stored in database and analyzes further thus realize the detection to air-condition faults.But this scheme needs to use the information required for the collection of multiple metering outfit, and the testing cost of air-conditioning is high.
Summary of the invention
Main purpose of the present invention is to provide a kind of air-conditioning system operational factor virtual detection method and device, is intended to without the need to using multiple metering outfit just can detect air-conditioning state, reduces detection of air-conditioning cost.
For achieving the above object, a kind of air-conditioning system operational factor virtual detection method provided by the invention, described air-conditioning system operational factor virtual detection method comprises step:
The parameter operational model of air-conditioning is set up according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
When operation of air conditioner, gather the temperature of described air-conditioning preset position;
According to temperature and the described operational factor to be detected of described parameter operational model output of described air-conditioning preset position.
Preferably, described parameter operational model comprises the outlet pressure operational model of outdoor heat exchanger, Compressor Discharge Pressure operational model and compressor return air pressure operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning comprises:
The temperature distribution state of indoor heat exchanger and outdoor heat exchanger under the different operating mode of record air-conditioning;
The preset probability interval of saturated-steam temperature is obtained according to described temperature distribution state;
The first saturated-steam temperature of air-conditioning system indoor heat exchanger and the second saturated-steam temperature of outdoor heat exchanger is analyzed by described preset probability interval;
The outlet pressure operational model of described outdoor heat exchanger is set up according to described second saturated-steam temperature; Described Compressor Discharge Pressure operational model is set up according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described second saturated-steam temperature; Described compressor return air pressure operational model is set up according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first saturated-steam temperature.
Preferably, described parameter operational model also comprises mass flow operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Described mass flow operational model is set up according to described first voltage drop value, described second voltage drop value, described first saturated-steam temperature, described second saturated-steam temperature.
Preferably, described parameter operational model also comprises compressor wasted work operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Collect and process machine suction temperature and delivery temperature;
Compressor return air enthalpy is obtained according to described compressor return air pressure and described compressor return air temperature; Compressor air-discharging enthalpy is obtained according to described Compressor Discharge Pressure and described delivery temperature;
Described compressor wasted work operational model is set up according to described mass flow operational model, described compressor return air enthalpy, described compressor air-discharging enthalpy.
Preferably, described parameter operational model also comprises coefficient of performance operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Gather outdoor heat exchanger inlet temperature and outlet temperature;
Outlet pressure according to described outdoor heat exchanger inlet temperature and described outdoor heat exchanger obtains the first import enthalpy of cold-producing medium at outdoor heat exchanger; The first outlet enthalpy of cold-producing medium at outdoor heat exchanger is obtained according to described outlet temperature and described compressor return air pressure;
Condensation heat is obtained according to described first import enthalpy, described first outlet enthalpy and described mass flow operational model;
Described coefficient of performance operational model is set up according to described condensation heat and described compressor wasted work operational model.
Preferably, described parameter operational model also comprises indoor air quantity operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Gather indoor return air temperature and wind pushing temperature;
Indoor return air enthalpy is obtained according to described indoor return air temperature and room atmosphere pressure; Indoor air-supply enthalpy is obtained according to described wind pushing temperature and described room atmosphere pressure;
The refrigerating capacity of system is obtained according to described compressor wasted work operational model and described coefficient of performance operational model;
Air quantity mass flow is obtained according to the refrigerating capacity of described system, described indoor return air enthalpy, described indoor air-supply enthalpy;
Described indoor air quantity operational model is set up according to described air quantity mass flow, described indoor return air temperature, described room atmosphere pressure.
Preferably, described parameter operational model also comprises indoor air relative humidity operational model and outdoor air relative humidity operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Described indoor air relative humidity operational model is obtained according to described indoor return air enthalpy and described indoor air-supply enthalpy;
Gather off-premises station return air temperature;
Off-premises station return air enthalpy is obtained according to described off-premises station return air temperature and outside atmosphere pressure;
Refrigerating capacity according to described compressor wasted work operational model and described system obtains outdoor condensation heat;
Off-premises station air-supply enthalpy is obtained according to described outdoor condensation heat and described off-premises station return air enthalpy;
Described outdoor air relative humidity operational model is obtained according to described off-premises station air-supply enthalpy and described off-premises station return air enthalpy.
In addition, for achieving the above object, the present invention also provides a kind of air-conditioning system operational factor virtual detector, and described air-conditioning system operational factor virtual detector comprises:
MBM, for setting up the parameter operational model of air-conditioning according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
Temperature collect module, for when operation of air conditioner, gathers the temperature of described air-conditioning preset position;
Output module, for exporting described operational factor to be detected according to the temperature of described air-conditioning preset position and described parameter operational model.
The parameter operational model of the present embodiment by adopting the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected to set up air-conditioning, when operation of air conditioner, gather the temperature of described preset position, the temperature value collected subsequently, through parameter operational model conversion output parameter, reaches virtual detection to air-conditioning according to described output parameter to running state of air conditioner analysis.Value to be detected when solving without the need to using multiple metering outfit just can obtain operation of air conditioner thus detect air-conditioning state, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air-conditioning system operational factor virtual detection method first embodiment of the present invention;
Fig. 2 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method second embodiment of the present invention;
Fig. 3 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method the 3rd embodiment of the present invention;
Fig. 4 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method the 4th embodiment of the present invention;
Fig. 5 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method the 5th embodiment of the present invention;
Fig. 6 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method the 6th embodiment of the present invention;
Fig. 7 is the refinement schematic flow sheet setting up parameter moving model in air-conditioning system operational factor virtual detection method the 7th embodiment of the present invention;
Fig. 8 is the functional module structure schematic diagram of air-conditioning system operational factor virtual detector first embodiment of the present invention;
Fig. 9 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector second embodiment of the present invention;
Figure 10 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector the 3rd embodiment of the present invention;
Figure 11 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector the 4th embodiment of the present invention;
Figure 12 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector the 5th embodiment of the present invention;
Figure 13 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector the 6th embodiment of the present invention;
Figure 14 is the refinement functional module structure schematic diagram of MBM in air-conditioning system operational factor virtual detector the 7th embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of air-conditioning system operational factor virtual detection method.With reference to Fig. 1, in a first embodiment, this air-conditioning system operational factor virtual detection method comprises:
Step S10 sets up the parameter operational model of air-conditioning according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
In the present embodiment, above-mentioned air-conditioning preset position comprises: the region of the appearance saturated-steam temperature obtained by experiment, compressor return air mouth and exhaust outlet, outdoor heat exchanger import and outlet, indoor set return air inlet and air outlet, off-premises station return air inlet.Particularly, temperature acquisition can be carried out at each position set temperature sensor.Above-mentioned operational factor to be detected can comprise the outlet pressure of outdoor heat exchanger, Compressor Discharge Pressure, compressor return air pressure, mass flow, compressor wasted work, the coefficient of performance, indoor air quantity, indoor air relative humidity and outdoor air relative humidity.Wherein, the outlet pressure model of outdoor heat exchanger, Compressor Discharge Pressure model, compressor return air pressure model, mass flow model, can occur that the region of saturated-steam temperature obtains by detecting; Compressor wasted work model can be obtained by mass flow model and detection compressor return air mouth and exhaust port temperatures; Coefficient of performance model can be obtained by outdoor heat exchanger outlet pressure model, compressor return air pressure model and sensing chamber's external heat exchanger import and outlet temperature; Indoor air quantity can be obtained by mass flow model, compressor wasted work model, outdoor heat exchanger outlet pressure model and sensing chamber's external heat exchanger import and outlet temperature; Indoor air relative humidity can be obtained by detection indoor set return air inlet and air outlet temperature; Outdoor air relative humidity can be obtained by compressor wasted work model, coefficient of performance model and detection off-premises station return air inlet temperature.
Step S20, when operation of air conditioner, gathers the temperature of described air-conditioning preset position;
In the present embodiment, before carrying out air-conditioning system operational parameter detection, in air-conditioning to be detected, above-mentioned preset position pre-sets temperature sensor.After air-conditioning start runs, the temperature sensor pre-set can detect the temperature value of this position in real time, and the program in air-conditioning chip reads the temperature value in each temperature sensor according to interval sometime, and this time interval can be arranged according to actual conditions.
Step S30, according to temperature and the described operational factor to be detected of described parameter operational model output of described air-conditioning preset position.
In the present embodiment, the saturated-steam temperature of outdoor heat exchanger and indoor heat exchanger passes to Compressor Discharge Pressure model, compressor return air pressure model, outdoor heat exchanger outlet pressure model and mass flow model, compressor return air temperature and delivery temperature pass to compressor wasted work operational model, outdoor heat exchanger inlet temperature and outlet temperature pass to coefficient of performance operational model, indoor return air temperature and wind pushing temperature temperature pass to air quantity operational model, and off-premises station return air temperature passes to outdoor air relative humidity operational model.Above-mentioned parameter operational model is recorded in air-conditioning system program with functional form, passes to respective function and calculate output valve after program reads the value of temperature sensor.Output valve can be analyzed according to actual conditions, in the present embodiment, output valve and each parameter and standard output area is contrasted, and uploads to further labor in the webserver simultaneously.Each value output area during the accessible work of above-mentioned each parameter and standard output area air-conditioning, before carrying out air-conditioning system operational parameter detection, carry out experiment obtain and be stored in air-conditioning system chip, the above-mentioned webserver comprises the relevant database of air-conditioning system operational factor.
The parameter operational model of the present embodiment by adopting the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected to set up air-conditioning, when operation of air conditioner, gather the temperature of described preset position, the temperature value collected subsequently, through parameter operational model conversion output parameter, reaches virtual detection to air-conditioning according to described output parameter to running state of air conditioner analysis.Value to be detected when solving without the need to using multiple metering outfit just can obtain operation of air conditioner thus detect air-conditioning state, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Further, with reference to Fig. 2, based on air-conditioning system operational factor virtual detection method first embodiment of the present invention, in air-conditioning system operational factor virtual detection method second embodiment of the present invention, above-mentioned parameter operational model comprises the outlet pressure operational model of outdoor heat exchanger, Compressor Discharge Pressure operational model and compressor return air pressure operational model, and above-mentioned steps S10 comprises:
Step S111, the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under the different operating mode of record air-conditioning;
In the present embodiment, above-mentioned different operating mode refers to the working condition of air-conditioning under different environment temperatures, and said temperature distribution refers to the distribution of indoor heat exchanger and outdoor heat exchanger surface each point temperature.The method wherein obtaining said temperature distribution is by adopting the analysis of Fluent software simulation.
Step S112, obtains the preset probability interval of saturated-steam temperature according to described temperature distribution state;
In the present embodiment, above-mentioned preset probability interval refers under different operating mode, based on indoor heat exchanger and outdoor heat exchanger Temperature Distribution, tests the maximum physical region of the appearance saturated-steam temperature value found.Maximum physical region can be chosen according to the number of times of actual conditions and experiment, such as, in 8 experiments, can choose and occur that the regional choice of saturated-steam temperature is preset probability interval more than 3 times.
Step S113, analyzes the first saturated-steam temperature of air-conditioning system indoor heat exchanger and the second saturated-steam temperature of outdoor heat exchanger by described preset probability interval;
In the present embodiment, the acquisition methods of described saturated-steam temperature is, obtains this position temperature by districution temperature sensor in above-mentioned preset probability interval, obtain the mean value of temperature in preset probability interval, be exactly saturated-steam temperature.Such as, the temperature that outdoor heat exchanger three regions obtain is respectively 16 DEG C, 17 DEG C and 18 DEG C, then the saturated-steam temperature of outdoor heat exchanger is 17 DEG C.
Step S114, sets up the outlet pressure operational model of described outdoor heat exchanger according to described second saturated-steam temperature;
In the present embodiment, the outlet pressure of described outdoor heat exchanger obtains according to saturated-steam temperature and the pressure table of comparisons, and before carrying out air-conditioning system operational parameter detection, saturated-steam temperature and the pressure table of comparisons are stored in air-conditioning system chip.Simultaneously, before detection design a model experiment time, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the outlet pressure calculating value of outdoor heat exchanger and detected value and be designated as S1, many experiments the average calculation error is designated as Sx1, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The value of above-mentioned second saturated-steam temperature got with variable Td storage in air-conditioning operation program, the outlet pressure operational model of above-mentioned outdoor heat exchanger is that Pcc=P (Td)+Sx1 represents with function.When the program is run, the value of program reading temperature sensor calculates the value that mean temperature obtains described second saturated-steam temperature Td, is then put into by variable Td in saturated-steam temperature and the pressure table of comparisons and searches and add that mean error Sx1 obtains the exit pressure levels Pcc of described outdoor heat exchanger.
Step S115, sets up described Compressor Discharge Pressure operational model according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described second saturated-steam temperature;
In the present embodiment, the first voltage drop value between described Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is according to formula Δ P=β 2Δ P rated 2calculate, wherein β is the corresponding different constant value of different operating mode, and namely there is the mapping table of different operating mode and β, this table is stored in air-conditioning system chip before carrying out air-conditioning system operational parameter detection, Δ P ratedcalculate according to compressor parameter of dispatching from the factory, calculate according to concrete air-conditioning system before detection and be kept in air-conditioning operation program with constant form.Simultaneously, before detection design a model experiment time, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the calculated value of Compressor Discharge Pressure and detected value and be designated as S2, many experiments the average calculation error is designated as Sx2, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is preserved, by function P1=β with variable P1 in operation program 2Δ P rated 2calculate the value of Compressor Discharge Pressure P1, preserve Compressor Discharge Pressure value with variable Pd, according to the second saturated-steam temperature Td, represent Compressor Discharge Pressure operational model with function Pd=P (Td)+P1+Sx2.When operation of air conditioner, the value of program reading temperature sensor calculates the value that mean temperature obtains described second saturated-steam temperature Td, then variable Td is put in saturated-steam temperature and the pressure table of comparisons and searches, the different temperatures inquiry operating mode corresponding by operating mode and the mapping table of β obtain β value and calculate the value of P1, again in conjunction with mean error Sx2, calculate compressor return air force value by function Pd=P (Td)+P1+Sx2.
Step S116, sets up described compressor return air pressure operational model according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first saturated-steam temperature.
In the present embodiment, in the experimentation designed a model before carrying out air-conditioning system operational parameter detection, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the calculated value of compressor return air pressure and detected value and be expressed as S3, many experiments the average calculation error is designated as Sx3, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The value of above-mentioned first saturated-steam temperature got with variable Ts storage in operation program, the pressure drop between indoor heat exchanger and Compressor Discharge Pressure is stored with variable P2, above-mentioned compressor back pressure operational model function Ps=P (Ts)+P2+Sx3 represents, wherein P (Ts) expression is tabled look-up according to temperature Ts and obtained force value.When operation of air conditioner, the value of program reading temperature sensor calculates the value that mean temperature obtains described first saturated-steam temperature Ts, then variable Ts is put in saturated-steam temperature and the pressure table of comparisons and searches, the different temperatures inquiry operating mode corresponding by operating mode and the mapping table of β obtain β value and calculate the value of P2, again in conjunction with mean error Sx1, calculate compressor return air force value by function Ps=P (Ts)+P2+Sx3.
The present embodiment, by the relation Modling model between temperature and pressure, can obtain outdoor heat exchanger exit pressure levels, Compressor Discharge Pressure value, compressor return air force value when operation of air conditioner according to the temperature value detected.Should be noted that, there are not the relations of dependence in above-mentioned steps S114 to step S116, therefore its sequencing performed can adjust, particularly, in actual applications, the one or both in outdoor heat exchanger outlet pressure operational model, Compressor Discharge Pressure operational model, compressor return air pressure model can also be set up according to actual needs.
Further, with reference to Fig. 3, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, in air-conditioning system operational factor virtual detection method the 3rd embodiment of the present invention, above-mentioned parameter operational model also comprises mass flow operational model, and above-mentioned steps S10 also comprises:
Step S121, sets up described mass flow operational model according to described first voltage drop value, described second voltage drop value, described first saturated-steam temperature, described second saturated-steam temperature.
In the present embodiment, above-mentioned mass flow operational model obtains according to temperature, pressure and quality controls table, before carrying out air-conditioning system operational parameter detection, is stored in air-conditioning system chip.In air-conditioning system program, the value of preserving mass flow with variable m, represents the calculating process of mass flow m with function m=(P1, P2, Td, Ts).When the program is run, search in conjunction with the second saturated-steam temperature Td of the first pressure drop P1 between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force, the second pressure drop P2, indoor heat exchanger first saturated vapour pressure Ts and outdoor heat exchanger between indoor heat exchanger saturation pressure force and Compressor Discharge Pressure the value that temperature, pressure and quality controls table obtain mass flow.
The present embodiment, by temperature, relation Modling model between pressure and mass flow, can obtain mass flow value when operation of air conditioner according to the temperature value detected.
Further, with reference to Fig. 4, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, in air-conditioning system operational factor virtual detection method the 4th embodiment of the present invention, above-mentioned parameter operational model also comprises compressor wasted work operational model, and above-mentioned steps S10 also comprises:
Step S131, collect and process machine suction temperature and delivery temperature;
Step S132, obtains compressor return air enthalpy according to described compressor return air pressure and described compressor return air temperature; Compressor air-discharging enthalpy is obtained according to described Compressor Discharge Pressure and described delivery temperature;
Step S133, sets up described compressor wasted work operational model according to described mass flow operational model, described compressor return air enthalpy, described compressor air-discharging enthalpy.
In the present embodiment, above-mentioned compressor suction temperature and delivery temperature to be detected by temperature sensor at compressor return air mouth and exhaust outlet and obtain.Described compressor return air enthalpy obtains according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, is stored in air-conditioning system chip.In air-conditioning system program, above-mentioned compressor suction temperature, above-mentioned delivery temperature is preserved respectively with variable Tys and Tyd, with function hs=H (Ps, Tys), hd=H (Pd, Tyd) represent described compressor return air enthalpy, exhaust enthalpy calculating process respectively, preserve the value of compressor wasted work with variable W, the operational model of compressor wasted work represents with function W=m* (hd-hs).When the program is run, read the temperature value of compressor return air mouth and exhaust outlet, in conjunction with the value of compressor return air pressure and pressure at expulsion, by function hs=H (Ps, and hd=H (Pd Tys), Tyd) search the pressure and temp enthalpy table of comparisons and obtain described compressor return air enthalpy and exhaust enthalpy, then calculate the value of compressor wasted work according to function W=m* (hd-hs).
The present embodiment is by temperature, pressure and enthalpy, and enthalpy, relation Modling model between quality and compressor wasted work, can obtain the value of compressor wasted work according to the temperature value detected when operation of air conditioner.
Further, with reference to Fig. 5, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, in air-conditioning system operational factor virtual detection method the 5th embodiment of the present invention, above-mentioned parameter operational model also comprises coefficient of performance operational model, and above-mentioned steps S10 also comprises:
Step S141, gathers outdoor heat exchanger inlet temperature and outlet temperature;
Step S142, the outlet pressure according to described outdoor heat exchanger inlet temperature and described outdoor heat exchanger obtains the first import enthalpy of cold-producing medium at outdoor heat exchanger; The first outlet enthalpy of cold-producing medium at outdoor heat exchanger is obtained according to described outlet temperature and described compressor return air pressure;
Step S143, obtains condensation heat according to described first import enthalpy, described first outlet enthalpy and described mass flow operational model;
Step S144, sets up described coefficient of performance operational model according to described condensation heat and described compressor wasted work operational model.
In the present embodiment, the inlet temperature of above-mentioned outdoor heat exchanger and outlet temperature gather with outlet set temperature sensor in the import of outdoor heat exchanger.First import enthalpy of above-mentioned outdoor heat exchanger and the first outlet enthalpy of outdoor heat exchanger obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, the inlet temperature, the described outlet temperature that detect the described outdoor heat exchanger obtained is preserved respectively with variable Tcin and Tcout, first import enthalpy, the first outlet enthalpy of described cold-producing medium at outdoor heat exchanger is preserved respectively with variable hcin and hcout, according to pressure and temp enthalpy relation, with function hcin=h (Tcin, Pcc), hcout=h (Tcout, Ps) represents the first import enthalpy of described outdoor heat exchanger and the calculating process of the first outlet enthalpy.Preserve the value of condensation heat with variable Qcon, the computational process of condensation heat represents with function Qcon=m* (hcin-hcout), and by the value of variable COP retention coefficient, coefficient of performance model function COP=(Qcon-W)/W represents.When the program is run, program reads the value of relevant position temperature sensor, the value of described hcin and hcout is obtained by searching the pressure and temp enthalpy table of comparisons, then the value of bond quality flow m, calculated the value of condensation heat by function Qcon=m* (hcin-hcout), calculate the value of the coefficient of performance finally by function COP=(Qcon-W)/W.
The present embodiment is by temperature, pressure and enthalpy, and quality, enthalpy and condensation heat, condensation heat, relation Modling model between compressor wasted work and the coefficient of performance, can obtain the value of the coefficient of performance according to the temperature value detected when operation of air conditioner.
Further, with reference to Fig. 6, above-mentioned based on air-conditioning system operational factor virtual detection method of the present invention, in air-conditioning system operational factor virtual detection method the 6th embodiment of the present invention, above-mentioned parameter operational model also comprises indoor air quantity operational model, and above-mentioned steps S10 also comprises:
Step S151, gathers indoor return air temperature and wind pushing temperature;
Step S152, obtains indoor return air enthalpy according to described indoor return air temperature and room atmosphere pressure; Indoor air-supply enthalpy is obtained according to described wind pushing temperature and described room atmosphere pressure;
Step S153, obtains the refrigerating capacity of system according to described compressor wasted work operational model and described coefficient of performance operational model;
Step S154, obtains air quantity mass flow according to the refrigerating capacity of described system, described indoor return air enthalpy, described indoor air-supply enthalpy;
Step S155, sets up described indoor air quantity operational model according to described air quantity mass flow, described indoor return air temperature, described room atmosphere pressure.
In the present embodiment.Above-mentioned room atmosphere pressure is standard environment atmospheric pressure, is worth for 101*10 5handkerchief.Above-mentioned indoor return air temperature and wind pushing temperature gather at indoor return air mouth and air outlet set temperature sensor.Above-mentioned indoor return air enthalpy and indoor air-supply enthalpy obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, preserve the described indoor return air temperature, the wind pushing temperature that detect and obtain respectively with variable Tin and Tout, by the value of atmospheric value in constant P preserving chamber, P=101*10 5with function hin=(P, and hout=(P Tin), Tout) calculating process of indoor return air enthalpy and indoor air-supply enthalpy is represented respectively, by the refrigerating capacity of variable Qref saved system, the computational process of refrigerating capacity is represented with function Qref=W/COP, air quantity mass flow value is preserved with variable qm, air quantity mass flow calculation process is represented with function qm=Qref/ (hout-hin), by airflow value in variable qv preserving chamber, represent indoor Wind Coverage Calculation process with function qv=(qm*R*Tin)/P, wherein the value of R is 8.314.When the program is run, program reads the value of relevant position temperature sensor, described compressor return air enthalpy and return-air enthalpy is obtained by searching pressure and temp enthalpy correspondence table, in conjunction with the value of compressor mass flow and compressor performance coefficient, calculate the refrigerating capacity of system, calculate the value of air quantity mass flow again according to function qm=Qref/ (hout-hin), calculate the value of indoor air quantity finally by function qv=(qm*R*Tin)/P.
The present embodiment is by temperature, pressure and enthalpy, compressor wasted work, the coefficient of performance and cooling system amount, cooling system amount, enthalpy and air quantity mass flow, relation Modling model between air quantity mass flow, room atmosphere pressure and indoor air quantity, can obtain the value of indoor air quantity according to the temperature value detected when operation of air conditioner.
Further, with reference to Fig. 7, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, in air-conditioning system operational factor virtual detection method the 7th embodiment of the present invention, above-mentioned parameter operational model also comprises indoor air relative humidity operational model and outdoor air relative humidity operational model, and above-mentioned steps S10 comprises:
Step S161, obtains described indoor air relative humidity operational model according to described indoor return air enthalpy and described indoor air-supply enthalpy;
Step S162, gathers off-premises station return air temperature;
Step S163, obtains off-premises station return air enthalpy according to described off-premises station return air temperature and outside atmosphere pressure;
Step S164, the refrigerating capacity according to described compressor wasted work operational model and described system obtains outdoor condensation heat;
Step S165, obtains off-premises station air-supply enthalpy according to described outdoor condensation heat and described off-premises station return air enthalpy;
Step S166, obtains described outdoor air relative humidity operational model according to described off-premises station air-supply enthalpy and described off-premises station return air enthalpy.
In the present embodiment, above-mentioned outside atmosphere pressure is standard environment atmospheric pressure, is worth for 101*10 5handkerchief.Above-mentioned off-premises station return air temperature and wind pushing temperature gather at off-premises station return air inlet and air outlet set temperature sensor.Above-mentioned off-premises station return air enthalpy and off-premises station air-supply enthalpy obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, indoor air relative humidity value is preserved with variable Sin, with function Sin=h (P, Tin)/h (P, Tout) computing of indoor air relative humidity is represented, outdoor condensation heat is represented with Qcon, the computing of outdoor condensation heat is represented with function Qcon=Qref+W, off-premises station return air temperature is preserved with variable Twin, off-premises station return air enthalpy, off-premises station air-supply enthalpy is represented respectively with hwin and hwout, by the value of atmospheric value in constant Pout preserving chamber, Pout=101*10 5with function hwin=(Pout, Twin) table lookup operations of off-premises station return air enthalpy is represented, the calculating of off-premises station air-out enthalpy is represented with function hwout=Qcon/hwin, by the value of variable Sout preserving chamber outer air relative humidity, represent the calculating of outdoor air relative humidity with function Sout=hwin/hwout.When the program is run, function Sin=h (P is passed through according to indoor return air enthalpy and indoor air-supply enthalpy, Tin)/h (P, Tout) indoor air relative humidity model is calculated, the value of function Qcon=Qref+W counting chamber condensed exterior heat is passed through according to indoor condensation heat and compressor wasted work, program reads the value Twin of the temperature sensor of off-premises station return air inlet, off-premises station return air enthalpy hwin is obtained by searching the pressure and temp enthalpy table of comparisons, then off-premises station air-out enthalpy is calculated by function hwout=Qcon/hwin, the value of outdoor air relative humidity is calculated finally by function Sout=hwin/hwout.
The present embodiment is by temperature, pressure and enthalpy, enthalpy and relative air humidity, the refrigerating capacity of system, compressor wasted work and condensation heat, condensation heat and enthalpy, relation Modling model between enthalpy and relative air humidity, can obtain the value of indoor air relative humidity and outdoor air relative humidity according to the temperature value detected when operation of air conditioner.Should be noted that, there are not the relations of dependence in above-mentioned steps S161 and step S162 to S165, therefore its sequencing performed can adjust, particularly, in actual applications, can also set up according to actual needs indoor air relative humidity, outdoor air relative humidity one of them.
The present invention further provides a kind of air-conditioning system operational factor virtual detector, with reference to Fig. 8, provide air-conditioning system operational factor virtual detector first embodiment of the present invention, in this embodiment, air-conditioning system operational factor virtual detector comprises:
MBM 10, for setting up the parameter operational model of air-conditioning according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
In the present embodiment, above-mentioned air-conditioning preset position comprises: the region of the appearance saturated-steam temperature obtained by experiment, compressor return air mouth and exhaust outlet, outdoor heat exchanger import and outlet, indoor set return air inlet and air outlet, off-premises station return air inlet.Particularly, temperature acquisition can be carried out at each position set temperature sensor.Above-mentioned operational factor to be detected can comprise the outlet pressure of outdoor heat exchanger, Compressor Discharge Pressure, compressor return air pressure, mass flow, compressor wasted work, the coefficient of performance, indoor air quantity, indoor air relative humidity and outdoor air relative humidity.Wherein, the outlet pressure model of outdoor heat exchanger, Compressor Discharge Pressure model, compressor return air pressure model, mass flow model, can occur that the region of saturated-steam temperature obtains by detecting; Compressor wasted work model can be obtained by mass flow model and detection compressor return air mouth and exhaust port temperatures; Coefficient of performance model can be obtained by outdoor heat exchanger outlet pressure model, compressor return air pressure model and sensing chamber's external heat exchanger import and outlet temperature; Indoor air quantity can be obtained by mass flow model, compressor wasted work model, outdoor heat exchanger outlet pressure model and sensing chamber's external heat exchanger import and outlet temperature; Indoor air relative humidity can be obtained by detection indoor set return air inlet and air outlet temperature; Outdoor air relative humidity can be obtained by compressor wasted work model, coefficient of performance model and detection off-premises station return air inlet temperature.
Temperature collect module 20, for when operation of air conditioner, gathers the temperature of described air-conditioning preset position;
In the present embodiment, before carrying out air-conditioning system operational parameter detection, in air-conditioning to be detected, above-mentioned preset position pre-sets temperature sensor.After air-conditioning start runs, the temperature sensor pre-set can detect the temperature value of this position in real time, and the program in air-conditioning chip reads the temperature value in each temperature sensor according to interval sometime, and this time interval can be arranged according to actual conditions.
Output module 30, for exporting described operational factor to be detected according to the temperature of described air-conditioning preset position and described parameter operational model.
In the present embodiment, the saturated-steam temperature of outdoor heat exchanger and indoor heat exchanger passes to Compressor Discharge Pressure model, compressor return air pressure model, outdoor heat exchanger outlet pressure model and mass flow model, compressor return air temperature and delivery temperature pass to compressor wasted work operational model, outdoor heat exchanger inlet temperature and outlet temperature pass to coefficient of performance operational model, indoor return air temperature and wind pushing temperature temperature pass to air quantity operational model, and off-premises station return air temperature passes to outdoor air relative humidity operational model.Above-mentioned parameter operational model is recorded in air-conditioning system program with functional form, passes to respective function and calculate output valve after program reads the value of temperature sensor.Output valve can be analyzed according to actual conditions, in the present embodiment, output valve and each parameter and standard output area is contrasted, and uploads to further labor in the webserver simultaneously.Each value output area during the accessible work of above-mentioned each parameter and standard output area air-conditioning, obtain and be stored in air-conditioning system chip carrying out experiment before carrying out air-conditioning system operational parameter detection, the above-mentioned webserver comprises the relevant database of air-conditioning system operational factor.
The parameter operational model of the present embodiment by adopting the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected to set up air-conditioning, when operation of air conditioner, gather the temperature of described preset position, the temperature value collected subsequently, through parameter operational model conversion output parameter, reaches virtual detection to air-conditioning according to described output parameter to running state of air conditioner analysis.Value to be detected when solving without the need to using multiple metering outfit just can obtain operation of air conditioner thus detect air-conditioning state, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Further, with reference to Fig. 9, based on air-conditioning system operational factor virtual detector first embodiment of the present invention, in air-conditioning system operational factor virtual detector second embodiment of the present invention, above-mentioned parameter operational model comprises the outlet pressure operational model of outdoor heat exchanger, Compressor Discharge Pressure operational model and compressor return air pressure operational model, and above-mentioned MBM 10 comprises:
Statistic unit 111, for recording the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under the different operating mode of air-conditioning;
In the present embodiment, above-mentioned different operating mode refers to the working condition of air-conditioning under different environment temperatures, and said temperature distribution refers to the distribution of indoor heat exchanger and outdoor heat exchanger surface each point temperature.The method wherein obtaining said temperature distribution is by adopting the analysis of Fluent software simulation.
Acquiring unit 112, for obtaining the preset probability interval of saturated-steam temperature according to described temperature distribution state;
In the present embodiment, above-mentioned preset probability interval refers under different operating mode, based on indoor heat exchanger and outdoor heat exchanger Temperature Distribution, tests the maximum physical region of the appearance saturated-steam temperature value found.Maximum physical region can be chosen according to the number of times of actual conditions and experiment, such as, in 8 experiments, can choose and occur that the regional choice of saturated-steam temperature is preset probability interval more than 3 times.
Analytic unit 113, for analyzing the first saturated-steam temperature of air-conditioning system indoor heat exchanger and the second saturated-steam temperature of outdoor heat exchanger by described preset probability interval;
In the present embodiment, the acquisition methods of described saturated-steam temperature is, obtains this position temperature by districution temperature sensor in above-mentioned preset probability interval, obtain the mean value of temperature in preset probability interval, be exactly saturated-steam temperature.Such as, the temperature that outdoor heat exchanger three regions obtain is respectively 16 DEG C, 17 DEG C and 18 DEG C, then the saturated-steam temperature of outdoor heat exchanger is 17 DEG C.
First modeling unit 114, for setting up the outlet pressure operational model of described outdoor heat exchanger according to described second saturated-steam temperature; Described Compressor Discharge Pressure operational model is set up according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described second saturated-steam temperature; Described compressor return air pressure operational model is set up according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first saturated-steam temperature.
In the present embodiment, the outlet pressure of described outdoor heat exchanger obtains according to saturated-steam temperature and the pressure table of comparisons, and before carrying out air-conditioning system operational parameter detection, saturated-steam temperature and the pressure table of comparisons are stored in air-conditioning system chip.Simultaneously, before detection design a model experiment time, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the outlet pressure calculating value of outdoor heat exchanger and detected value and be designated as S1, many experiments the average calculation error is designated as Sx1, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The value of above-mentioned second saturated-steam temperature got with variable Td storage in air-conditioning operation program, the outlet pressure operational model of above-mentioned outdoor heat exchanger is that Pcc=P (Td)+Sx1 represents with function.When the program is run, the value of program reading temperature sensor calculates the value that mean temperature obtains described second saturated-steam temperature Td, is then put into by variable Td in saturated-steam temperature and the pressure table of comparisons and searches and add that mean error Sx1 obtains the exit pressure levels Pcc of described outdoor heat exchanger.
Wherein, the first voltage drop value between described Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is according to formula Δ P=β 2Δ P rated 2calculate, wherein β is the corresponding different constant value of different operating mode, and namely there is the mapping table of different operating mode and β, this table is stored in air-conditioning system chip before carrying out air-conditioning system operational parameter detection, Δ P ratedcalculate according to compressor parameter of dispatching from the factory, calculate according to concrete air-conditioning system before detection and be kept in air-conditioning operation program with constant form.Simultaneously, before detection design a model experiment time, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the calculated value of Compressor Discharge Pressure and detected value and be designated as S2, many experiments the average calculation error is designated as Sx2, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is preserved, by function P1=β with variable P1 in operation program 2Δ P rated 2calculate the value of Compressor Discharge Pressure P1, preserve Compressor Discharge Pressure value with variable Pd, according to the second saturated-steam temperature Td, represent Compressor Discharge Pressure operational model with function Pd=P (Td)+P1+Sx2.When operation of air conditioner, the value of program reading temperature sensor calculates the value that mean temperature obtains described second saturated-steam temperature Td, then variable Td is put in saturated-steam temperature and the pressure table of comparisons and searches, the different temperatures inquiry operating mode corresponding by operating mode and the mapping table of β obtain β value and calculate the value of P1, again in conjunction with mean error Sx2, calculate compressor return air force value by function Pd=P (Td)+P1+Sx2.
Wherein, in the experimentation designed a model before carrying out air-conditioning system operational parameter detection, comparison is detected with actual pressure instrument by tabling look-up, obtain error between the calculated value of compressor return air pressure and detected value and be expressed as S3, many experiments the average calculation error is designated as Sx3, be understandable that, the precision of calculating and test period, number of times have certain relation, and experimental period, number of times can determine by actual conditions.The value of above-mentioned first saturated-steam temperature got with variable Ts storage in operation program, the pressure drop between indoor heat exchanger and Compressor Discharge Pressure is stored with variable P2, above-mentioned compressor back pressure operational model function Ps=P (Ts)+P2+Sx3 represents, wherein P (Ts) expression is tabled look-up according to temperature Ts and obtained force value.When operation of air conditioner, the value of program reading temperature sensor calculates the value that mean temperature obtains described first saturated-steam temperature Ts, then variable Ts is put in saturated-steam temperature and the pressure table of comparisons and searches, the different temperatures inquiry operating mode corresponding by operating mode and the mapping table of β obtain β value and calculate the value of P2, again in conjunction with mean error Sx1, calculate compressor return air force value by function Ps=P (Ts)+P2+Sx3.
The present embodiment, by the relation Modling model between temperature and pressure, can obtain outdoor heat exchanger exit pressure levels, Compressor Discharge Pressure value, compressor return air force value when operation of air conditioner according to the temperature value detected.Should be noted that, there are not the relations of dependence between outlet pressure operational model in above-mentioned modeling unit 114, Compressor Discharge Pressure operational model, compressor return air pressure operational model three, therefore in actual applications, wherein one or both can also be comprised according to actual needs.
Further, with reference to Figure 10, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, in air-conditioning system operational factor virtual detector the 3rd embodiment of the present invention, above-mentioned parameter operational model also comprises mass flow operational model, and above-mentioned MBM 10 also comprises:
Second modeling unit 121, for setting up described mass flow operational model according to described first voltage drop value, described second voltage drop value, described first saturated-steam temperature, described second saturated-steam temperature.
In the present embodiment, above-mentioned mass flow operational model obtains according to temperature, pressure and quality controls table, before carrying out air-conditioning system operational parameter detection, is stored in air-conditioning system chip.In air-conditioning system program, the value of preserving mass flow with variable m, represents the calculating process of mass flow m with function m=(P1, P2, Td, Ts).When the program is run, search in conjunction with the second saturated-steam temperature Td of the first pressure drop P1 between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force, the second pressure drop P2, indoor heat exchanger first saturated vapour pressure Ts and outdoor heat exchanger between indoor heat exchanger saturation pressure force and Compressor Discharge Pressure the value that temperature, pressure and quality controls table obtain mass flow.
The present embodiment, by temperature, relation Modling model between pressure and mass flow, can obtain mass flow value when operation of air conditioner according to the temperature value detected.
Further, with reference to Figure 11, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, in air-conditioning system operational factor virtual detector the 4th embodiment of the present invention, above-mentioned parameter operational model also comprises compressor wasted work operational model, and above-mentioned MBM 10 also comprises:
First temperature collecting cell 131, for collect and process machine suction temperature and delivery temperature;
First arithmetic element 132, for obtaining compressor return air enthalpy according to described compressor return air pressure and described compressor return air temperature; For obtaining compressor air-discharging enthalpy according to described Compressor Discharge Pressure and described delivery temperature;
3rd modeling unit 133, for setting up described compressor wasted work operational model according to described mass flow operational model, described compressor return air enthalpy, described compressor air-discharging enthalpy.
In the present embodiment, above-mentioned compressor suction temperature and delivery temperature to be detected by temperature sensor at compressor return air mouth and exhaust outlet and obtain.Described compressor return air enthalpy obtains according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, is stored in air-conditioning system chip.In air-conditioning system program, above-mentioned compressor suction temperature, above-mentioned delivery temperature is preserved respectively with variable Tys and Tyd, with function hs=H (Ps, Tys), hd=H (Pd, Tyd) represent described compressor return air enthalpy, exhaust enthalpy calculating process respectively, preserve the value of compressor wasted work with variable W, the operational model of compressor wasted work represents with function W=m* (hd-hs).When the program is run, read the temperature value of compressor return air mouth and exhaust outlet, in conjunction with the value of compressor return air pressure and pressure at expulsion, by function hs=H (Ps, and hd=H (Pd Tys), Tyd) search the pressure and temp enthalpy table of comparisons and obtain described compressor return air enthalpy and exhaust enthalpy, then calculate the value of compressor wasted work according to function W=m* (hd-hs).
The present embodiment is by temperature, pressure and enthalpy, and enthalpy, relation Modling model between quality and compressor wasted work, can obtain the value of compressor wasted work according to the temperature value detected when operation of air conditioner.
Further, with reference to Figure 12, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, in air-conditioning system operational factor virtual detector the 5th embodiment of the present invention, above-mentioned parameter operational model also comprises coefficient of performance operational model, and above-mentioned MBM 10 also comprises:
Second temperature collecting cell 141, for gathering inlet temperature and the outlet temperature of outdoor heat exchanger;
Second arithmetic element 142, for obtaining the first import enthalpy of cold-producing medium at outdoor heat exchanger according to the outlet pressure of described inlet temperature and described outdoor heat exchanger; The first outlet enthalpy of cold-producing medium at outdoor heat exchanger is obtained according to described outlet temperature and described compressor return air pressure;
3rd arithmetic element 143, for obtaining condensation heat according to described first import enthalpy, described first outlet enthalpy and described mass flow operational model;
4th modeling unit 144, for setting up described coefficient of performance operational model according to described condensation heat and described compressor wasted work operational model.
In the present embodiment, the inlet temperature of above-mentioned outdoor heat exchanger and outlet temperature gather with outlet set temperature sensor in the import of outdoor heat exchanger.First import enthalpy of above-mentioned outdoor heat exchanger and the first outlet enthalpy of outdoor heat exchanger obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, the inlet temperature, the described outlet temperature that detect the described outdoor heat exchanger obtained is preserved respectively with variable Tcin and Tcout, first import enthalpy, the first outlet enthalpy of described cold-producing medium at outdoor heat exchanger is preserved respectively with variable hcin and hcout, according to pressure and temp enthalpy relation, with function hcin=h (Tcin, Pcc), hcout=h (Tcout, Ps) represents the first import enthalpy of described outdoor heat exchanger and the calculating process of the first outlet enthalpy.Preserve the value of condensation heat with variable Qcon, the computational process of condensation heat represents with function Qcon=m* (hcin-hcout), and by the value of variable COP retention coefficient, coefficient of performance model function COP=(Qcon-W)/W represents.When the program is run, program reads the value of relevant position temperature sensor, the value of described hcin and hcout is obtained by searching the pressure and temp enthalpy table of comparisons, then the value of bond quality flow m, calculated the value of condensation heat by function Qcon=m* (hcin-hcout), calculate the value of the coefficient of performance finally by function COP=(Qcon-W)/W.
The present embodiment is by temperature, pressure and enthalpy, and quality, enthalpy and condensation heat, condensation heat, relation Modling model between compressor wasted work and the coefficient of performance, can obtain the value of the coefficient of performance according to the temperature value detected when operation of air conditioner.
Further, with reference to Figure 13, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, in air-conditioning system operational factor virtual detector the 6th embodiment of the present invention, above-mentioned parameter operational model also comprises indoor air quantity operational model, and above-mentioned MBM 10 also comprises:
3rd temperature collecting cell 151, for gathering indoor return air temperature and wind pushing temperature;
4th arithmetic element 152, for obtaining indoor return air enthalpy according to described indoor return air temperature and room atmosphere pressure; Indoor air-supply enthalpy is obtained according to described wind pushing temperature and described room atmosphere pressure;
5th arithmetic element 153, for obtaining the refrigerating capacity of system according to described compressor wasted work operational model and described coefficient of performance operational model;
6th arithmetic element 154, obtains air quantity mass flow for the refrigerating capacity according to described system, described indoor return air enthalpy, indoor air-supply enthalpy;
5th modeling unit 155, for setting up described indoor air quantity operational model according to described air quantity mass flow, described indoor return air temperature, described room atmosphere pressure.
In the present embodiment.Above-mentioned room atmosphere pressure is standard environment atmospheric pressure, is worth for 101*10 5handkerchief.Above-mentioned indoor return air temperature and wind pushing temperature gather at indoor return air mouth and air outlet set temperature sensor.Above-mentioned indoor return air enthalpy and indoor air-supply enthalpy obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, preserve the described indoor return air temperature, the wind pushing temperature that detect and obtain respectively with variable Tin and Tout, by the value of atmospheric value in constant P preserving chamber, P=101*10 5with function hin=(P, and hout=(P Tin), Tout) calculating process of indoor return air enthalpy and indoor air-supply enthalpy is represented respectively, by the refrigerating capacity of variable Qref saved system, the computational process of refrigerating capacity is represented with function Qref=W/COP, air quantity mass flow value is preserved with variable qm, air quantity mass flow calculation process is represented with function qm=Qref/ (hout-hin), by airflow value in variable qv preserving chamber, represent indoor Wind Coverage Calculation process with function qv=(qm*R*Tin)/P, wherein the value of R is 8.314.When the program is run, program reads the value of relevant position temperature sensor, described compressor return air enthalpy and return-air enthalpy is obtained by searching pressure and temp enthalpy correspondence table, in conjunction with the value of compressor mass flow and compressor performance coefficient, calculate the refrigerating capacity of system, calculate the value of air quantity mass flow again according to function qm=Qref/ (hout-hin), calculate the value of indoor air quantity finally by function qv=(qm*R*Tin)/P.
The present embodiment is by temperature, pressure and enthalpy, compressor wasted work, the coefficient of performance and cooling system amount, cooling system amount, enthalpy and air quantity mass flow, relation Modling model between air quantity mass flow, room atmosphere pressure and indoor air quantity, can obtain the value of indoor air quantity according to the temperature value detected when operation of air conditioner.
Further, with reference to Figure 14, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, in air-conditioning system operational factor virtual detector the 7th embodiment of the present invention, above-mentioned parameter operational model also comprises indoor air relative humidity operational model and outdoor air relative humidity operational model, and above-mentioned MBM 10 also comprises:
6th modeling unit 161, for obtaining described indoor air relative humidity operational model according to described indoor return air enthalpy and described indoor air-supply enthalpy;
4th temperature collecting cell 162, for gathering off-premises station return air temperature;
7th arithmetic element 163, for obtaining off-premises station return air enthalpy according to described off-premises station return air temperature and outside atmosphere pressure;
8th arithmetic element 164, for obtaining outdoor condensation heat according to the refrigerating capacity of described compressor wasted work operational model and described system;
9th arithmetic element 165, for obtaining off-premises station air-supply enthalpy according to described outdoor condensation heat and described off-premises station return air enthalpy;
7th modeling unit 166, for obtaining described outdoor air relative humidity operational model according to described off-premises station air-supply enthalpy and described off-premises station return air enthalpy.
In the present embodiment, above-mentioned outside atmosphere pressure is standard environment atmospheric pressure, is worth for 101*10 5handkerchief.Above-mentioned off-premises station return air temperature and wind pushing temperature gather at off-premises station return air inlet and air outlet set temperature sensor.Above-mentioned off-premises station return air enthalpy and off-premises station air-supply enthalpy obtain according to the pressure and temp enthalpy table of comparisons, before carrying out air-conditioning system operational parameter detection, are stored in air-conditioning system chip by this table.In air-conditioning system program, indoor air relative humidity value is preserved with variable Sin, with function Sin=h (P, Tin)/h (P, Tout) computing of indoor air relative humidity is represented, outdoor condensation heat is represented with Qcon, the computing of outdoor condensation heat is represented with function Qcon=Qref+W, off-premises station return air temperature is preserved with variable Twin, off-premises station return air enthalpy, off-premises station air-supply enthalpy is represented respectively with hwin and hwout, by the value of atmospheric value in constant Pout preserving chamber, Pout=101*10 5with function hwin=(Pout, Twin) table lookup operations of off-premises station return air enthalpy is represented, the calculating of off-premises station air-out enthalpy is represented with function hwout=Qcon/hwin, by the value of variable Sout preserving chamber outer air relative humidity, represent the calculating of outdoor air relative humidity with function Sout=hwin/hwout.When the program is run, function Sin=h (P is passed through according to indoor return air enthalpy and indoor air-supply enthalpy, Tin)/h (P, Tout) indoor air relative humidity model is calculated, the value of function Qcon=Qref+W counting chamber condensed exterior heat is passed through according to indoor condensation heat and compressor wasted work, program reads the value Twin of the temperature sensor of off-premises station return air inlet, off-premises station return air enthalpy hwin is obtained by searching the pressure and temp enthalpy table of comparisons, then off-premises station air-out enthalpy is calculated by function hwout=Qcon/hwin, the value of outdoor air relative humidity is calculated finally by function Sout=hwin/hwout.
The present embodiment is by temperature, pressure and enthalpy, enthalpy and relative air humidity, the refrigerating capacity of system, compressor wasted work and condensation heat, condensation heat and enthalpy, relation Modling model between enthalpy and relative air humidity, can obtain the value of indoor air relative humidity and outdoor air relative humidity according to the temperature value detected when operation of air conditioner.It should be noted that above-mentioned modeling unit 161 does not exist the relations of dependence between the two with modeling unit 166, therefore in actual applications, only can also comprise one of them according to actual needs.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (8)

1. an air-conditioning system operational factor virtual detection method, is characterized in that, described air-conditioning system operational factor virtual detection method comprises:
The parameter operational model of air-conditioning is set up according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
When operation of air conditioner, gather the temperature of described air-conditioning preset position;
According to temperature and the described operational factor to be detected of described parameter operational model output of described air-conditioning preset position.
2. air-conditioning system operational factor virtual detection method as claimed in claim 1, is characterized in that, described parameter operational model comprises the outlet pressure operational model of outdoor heat exchanger, Compressor Discharge Pressure operational model and compressor return air pressure operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning comprises:
The temperature distribution state of indoor heat exchanger and outdoor heat exchanger under the different operating mode of record air-conditioning;
The preset probability interval of saturated-steam temperature is obtained according to described temperature distribution state;
The first saturated-steam temperature of air-conditioning system indoor heat exchanger and the second saturated-steam temperature of outdoor heat exchanger is analyzed by described preset probability interval;
The outlet pressure operational model of described outdoor heat exchanger is set up according to described second saturated-steam temperature; Described Compressor Discharge Pressure operational model is set up according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described second saturated-steam temperature; Described compressor return air pressure operational model is set up according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first saturated-steam temperature.
3. air-conditioning system operational factor virtual detection method as claimed in claim 2, it is characterized in that, described parameter operational model also comprises: mass flow operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Described mass flow operational model is set up according to described first voltage drop value, described second voltage drop value, described first saturated-steam temperature, described second saturated-steam temperature.
4. air-conditioning system operational factor virtual detection method as claimed in claim 3, it is characterized in that, described parameter operational model also comprises: compressor wasted work operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Collect and process machine suction temperature and delivery temperature;
Compressor return air enthalpy is obtained according to described compressor return air pressure and described compressor return air temperature; Compressor air-discharging enthalpy is obtained according to described Compressor Discharge Pressure and described delivery temperature;
Described compressor wasted work operational model is set up according to described mass flow operational model, described compressor return air enthalpy, described compressor air-discharging enthalpy.
5. air-conditioning system operational factor virtual detection method as claimed in claim 4, it is characterized in that, described parameter operational model also comprises: coefficient of performance operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Gather outdoor heat exchanger inlet temperature and outlet temperature;
Outlet pressure according to described outdoor heat exchanger inlet temperature and described outdoor heat exchanger obtains the first import enthalpy of cold-producing medium at outdoor heat exchanger; The first outlet enthalpy of cold-producing medium at outdoor heat exchanger is obtained according to described outlet temperature and described compressor return air pressure;
Condensation heat is obtained according to described first import enthalpy, described first outlet enthalpy and described mass flow operational model;
Described coefficient of performance operational model is set up according to described condensation heat and described compressor wasted work operational model.
6. air-conditioning system operational factor virtual detection method as claimed in claim 5, it is characterized in that, described parameter operational model also comprises: indoor air quantity operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Gather indoor return air temperature and wind pushing temperature;
Indoor return air enthalpy is obtained according to described indoor return air temperature and room atmosphere pressure; Indoor air-supply enthalpy is obtained according to described wind pushing temperature and described room atmosphere pressure;
The refrigerating capacity of system is obtained according to described compressor wasted work operational model and described coefficient of performance operational model;
Air quantity mass flow is obtained according to the refrigerating capacity of described system, described indoor return air enthalpy, described indoor air-supply enthalpy;
Described indoor air quantity operational model is set up according to described air quantity mass flow, described indoor return air temperature, described room atmosphere pressure.
7. air-conditioning system operational factor virtual detection method as claimed in claim 6, it is characterized in that, described parameter operational model also comprises: indoor air relative humidity operational model and outdoor air relative humidity operational model;
The parameter operational model that incidence relation between the described temperature according to air-conditioning preset position and operational factor to be detected sets up air-conditioning also comprises:
Described indoor air relative humidity operational model is obtained according to described indoor return air enthalpy and described indoor air-supply enthalpy;
Gather off-premises station return air temperature;
Off-premises station return air enthalpy is obtained according to described off-premises station return air temperature and outside atmosphere pressure;
Refrigerating capacity according to described compressor wasted work operational model and described system obtains outdoor condensation heat;
Off-premises station air-supply enthalpy is obtained according to described outdoor condensation heat and described off-premises station return air enthalpy;
Described outdoor air relative humidity operational model is obtained according to described off-premises station air-supply enthalpy and described off-premises station return air enthalpy.
8. an air-conditioning system operational factor virtual detector, is characterized in that, described air-conditioning system operational factor virtual detector comprises:
MBM, for setting up the parameter operational model of air-conditioning according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;
Temperature collect module, for when operation of air conditioner, gathers the temperature of described air-conditioning preset position;
Output module, for exporting described operational factor to be detected according to the temperature of described air-conditioning preset position and described parameter operational model.
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