CN105299845B - Air-conditioning system operational factor virtual detection method and device - Google Patents

Air-conditioning system operational factor virtual detection method and device Download PDF

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Publication number
CN105299845B
CN105299845B CN201510815445.XA CN201510815445A CN105299845B CN 105299845 B CN105299845 B CN 105299845B CN 201510815445 A CN201510815445 A CN 201510815445A CN 105299845 B CN105299845 B CN 105299845B
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air
temperature
operational
conditioning
pressure
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CN105299845A (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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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • F24F11/59Remote control for presetting

Abstract

The invention discloses a kind of air-conditioning system operational factor virtual detection method, the parameter operational model of air-conditioning is established according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected;When operation of air conditioner, the temperature of the air-conditioning preset position is gathered;The operational factor to be detected is exported according to the temperature of the air-conditioning preset position and the parameter operational model.The invention also discloses a kind of air-conditioning system operational factor virtual detector.The present invention solves without using a variety of metering outfits value to be detected during with regard to that can obtain operation of air conditioner so as to be detected to air-conditioning state, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.

Description

Air-conditioning system operational factor virtual detection method and device
Technical field
The present invention relates to air-conditioning technical field, more particularly to air-conditioning system operational factor virtual detection method and device.
Background technology
With the development of technology, the researcher of field of air conditioning also is continuously attempting to improve air-conditioning products by various methods Quality and Consumer's Experience.Due to air-conditioning in use, it is possible that various failures, therefore, it is possible to timely Air-conditioning state and potential problems are solved, rapid positioning can be diagnosed in time when a failure occurs it, for reducing product maintenance cost, carrying High product maintenance efficiency, enhancing CSAT, further Improving The Quality of Products have very great help.
In the prior art, domestic patent《Air-conditioning fault diagnosis system and method based on data fusion under environment of internet of things》 It is mainly to gather the information such as running status and the parameter of air-conditioning equipment to propose a kind of detection method, then deposits the information collected Store up in database and further analyze so as to realize the detection to air-conditioning failure.But this scheme needs to use a variety of metering works Information required for tool collection, the testing cost of air-conditioning are high.
The content of the invention
It is a primary object of the present invention to provide a kind of air-conditioning system operational factor virtual detection method and device, it is intended to nothing A variety of metering outfits need to be used just to be detected to air-conditioning state, reduce detection of air-conditioning cost.
To achieve the above object, a kind of air-conditioning system operational factor virtual detection method provided by the invention, the air-conditioning System operational parameters virtual detection method includes step:
The parameter that air-conditioning is established according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected is transported Calculate model;
When operation of air conditioner, the temperature of the air-conditioning preset position is gathered;
The operational factor to be detected is exported according to the temperature of the air-conditioning preset position and the parameter operational model.
Preferably, the parameter operational model includes the outlet pressure operational model of outdoor heat exchanger, compressor air-discharging pressure Power operational model and compressor return air pressure operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model includes:
Record the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under air-conditioning difference operating mode;
The preset probability interval of saturated-steam temperature is obtained according to the temperature distribution state;
First saturated-steam temperature of air-conditioning system indoor heat exchanger is analyzed by the preset probability interval and outdoor is changed Second saturated-steam temperature of hot device;
The outlet pressure operational model of the outdoor heat exchanger is established according to second saturated-steam temperature;According to compression The first voltage drop value and second saturated-steam temperature between machine pressure at expulsion and outdoor heat exchanger saturation pressure establish the pressure Contracting machine pressure at expulsion operational model;Satisfied according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first The compressor return air pressure operational model is established with vapor (steam) temperature.
Preferably, the parameter operational model also includes mass flow operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model also includes:
Steamed according to first voltage drop value, second voltage drop value, first saturated-steam temperature, second saturation Stripping temperature establishes the mass flow operational model.
Preferably, the parameter operational model also includes compressor wasted work operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model also includes:
Collect and process machine suction temperature and delivery temperature;
Compressor return air enthalpy is obtained according to the compressor return air pressure and the compressor return air temperature;According to described Compressor Discharge Pressure obtains compressor air-discharging enthalpy with the delivery temperature;
Institute is established according to the mass flow operational model, the compressor return air enthalpy, the compressor air-discharging enthalpy State compressor wasted work operational model.
Preferably, the parameter operational model also includes coefficient of performance operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model also includes:
Gather outdoor heat exchanger inlet temperature and outlet temperature;
Refrigerant is obtained in outdoor according to the outlet pressure of the outdoor heat exchanger inlet temperature and the outdoor heat exchanger First import enthalpy of heat exchanger;Refrigerant is obtained in outdoor heat exchange according to the outlet temperature and the compressor return air pressure The first outlet enthalpy of device;
Condensed according to the first import enthalpy, the first outlet enthalpy and the mass flow operational model Heat;
The coefficient of performance operational model is established according to the condensation heat and the compressor wasted work operational model.
Preferably, the parameter operational model also includes indoor air quantity operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model also includes:
Gather indoor return air temperature and wind pushing temperature;
Indoor return air enthalpy is obtained according to the indoor return air temperature and room atmosphere pressure;According to the wind pushing temperature and institute State room atmosphere pressure and obtain indoor air-supply enthalpy;
The refrigerating capacity of system is obtained according to the compressor wasted work operational model and the coefficient of performance operational model;
Air quantity quality stream is obtained according to the refrigerating capacity of the system, the indoor return air enthalpy, the indoor air-supply enthalpy Amount;
The indoor air quantity is established according to the air quantity mass flow, the indoor return air temperature, the room atmosphere pressure Operational model.
Preferably, the parameter operational model also includes indoor air relative humidity operational model and outdoor air is relatively wet Spend operational model;
The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the ginseng of air-conditioning Number operational model also includes:
The indoor air relative humidity computing mould is obtained according to the indoor return air enthalpy and the indoor air-supply enthalpy Type;
Gather outdoor unit return air temperature;
Outdoor unit return air enthalpy is obtained according to the outdoor unit return air temperature and outside atmosphere pressure;
Outdoor condensation heat is obtained according to the refrigerating capacity of the compressor wasted work operational model and the system;
Outdoor unit air-supply enthalpy is obtained according to the outdoor condensation heat and the outdoor unit return air enthalpy;
The outdoor air relative humidity fortune is obtained according to outdoor unit air-supply enthalpy and the outdoor unit return air enthalpy Calculate model.
In addition, to achieve the above object, the present invention also provides a kind of air-conditioning system operational factor virtual detector, described Air-conditioning system operational factor virtual detector includes:
Modeling module, established for the incidence relation between the temperature according to air-conditioning preset position and operational factor to be detected The parameter operational model of air-conditioning;
Temperature collect module, for when operation of air conditioner, gathering the temperature of the air-conditioning preset position;
Output module, it is described to be checked for the temperature according to the air-conditioning preset position and parameter operational model output Survey operational factor.
The present embodiment is established by using the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected The parameter operational model of air-conditioning, when operation of air conditioner, the temperature of the preset position is gathered, the temperature value then collected passes through Parameter operational model converts output parameter, and running state of air conditioner is carried out according to the output parameter to analyze the void reached to air-conditioning Intend detection.Value to be detected during with regard to that can obtain operation of air conditioner is solved without using a variety of metering outfits so as to enter to air-conditioning state Row detection, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Brief description of the drawings
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 to establish parameter moving model in air-conditioning system operational factor virtual detection method second embodiment of the present invention Refine schematic flow sheet;
Fig. 3 is to establish parameter moving model in air-conditioning system operational factor virtual detection method 3rd embodiment of the present invention Refine schematic flow sheet;
Fig. 4 is to establish parameter moving model in air-conditioning system operational factor virtual detection method fourth embodiment of the present invention Refine schematic flow sheet;
Fig. 5 is to establish parameter moving model in the embodiment of air-conditioning system operational factor virtual detection method the 5th of the present invention Refine schematic flow sheet;
Fig. 6 is to establish parameter moving model in air-conditioning system operational factor virtual detection method sixth embodiment of the present invention Refine schematic flow sheet;
Fig. 7 is to establish parameter moving model in the embodiment of air-conditioning system operational factor virtual detection method the 7th of the present invention Refine schematic flow sheet;
Fig. 8 is that the functional module structure of air-conditioning system operational factor virtual detector first embodiment of the present invention is illustrated Figure;
Fig. 9 is the refinement function of modeling module in air-conditioning system operational factor virtual detector second embodiment of the present invention Modular structure schematic diagram;
Figure 10 is the refinement work(of modeling module in air-conditioning system operational factor virtual detector 3rd embodiment of the present invention Can modular structure schematic diagram;
Figure 11 is the refinement work(of modeling module in air-conditioning system operational factor virtual detector fourth embodiment of the present invention Can modular structure schematic diagram;
Figure 12 is the refinement work(of modeling module in the embodiment of air-conditioning system operational factor virtual detector the 5th of the present invention Can modular structure schematic diagram;
Figure 13 is the refinement work(of modeling module in air-conditioning system operational factor virtual detector sixth embodiment of the present invention Can modular structure schematic diagram;
Figure 14 is the refinement work(of modeling module in the embodiment of air-conditioning system operational factor virtual detector the 7th of the present invention Can modular structure schematic diagram.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of air-conditioning system operational factor virtual detection method.Reference picture 1, in the first embodiment, should Air-conditioning system operational factor virtual detection method includes:
Step S10 establishes air-conditioning according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected Parameter operational model;
In the present embodiment, above-mentioned air-conditioning preset position includes:The region of the appearance saturated-steam temperature obtained by testing, Compressor return air mouth and exhaust outlet, outdoor heat exchanger import and outlet, indoor set return air inlet and air outlet, outdoor unit return air inlet. Specifically, in each position temperature sensor can be set to carry out temperature acquisition.Above-mentioned operational factor to be detected can include outdoor The outlet pressure of 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, pressure Contracting machine pressure at expulsion model, compressor return air pressure model, mass flow model, can by detection saturated-steam temperature occur Region obtain;Compressor wasted work model can be obtained by mass flow model and detection compressor return air mouth with exhaust port temperatures Arrive;Coefficient of performance model can be by changing outside outdoor heat exchanger outlet pressure model, compressor return air pressure model and sensing chamber Hot device import obtains with outlet temperature;Indoor air quantity can pass through mass flow model, compressor wasted work model, outdoor heat exchanger Outlet pressure model and detection outdoor heat exchanger import obtain with outlet temperature;Indoor air relative humidity can pass through sensing chamber Interior machine return air inlet obtains with air outlet temperature;Outdoor air relative humidity can pass through compressor wasted work model, performance demands digital-to-analogue Type and detection outdoor unit return air inlet temperature obtain.
Step S20, when operation of air conditioner, gather the temperature of the air-conditioning preset position;
In the present embodiment, before air-conditioning system operational parameter detection is carried out, above-mentioned preset position is pre- in air-conditioning to be detected Temperature sensor is first set.After air-conditioning start operation, the temperature sensor pre-set can detect the temperature of the position in real time Angle value, the program in air-conditioning chip read the temperature value in each temperature sensor according to sometime interval, and the time interval can To be configured according to actual conditions.
Step S30, the fortune to be detected is exported according to the temperature of the air-conditioning preset position and the parameter operational model Row parameter.
In the present embodiment, the saturated-steam temperature of outdoor heat exchanger and indoor heat exchanger passes to Compressor Discharge Pressure mould Type, compressor return air pressure model, outdoor heat exchanger outlet pressure model and mass flow model, compressor return air temperature and row Temperature degree passes to compressor wasted work operational model, and outdoor heat exchanger inlet temperature and outlet temperature pass to coefficient of performance computing Model, indoor return air temperature and wind pushing temperature temperature are transmitted to air quantity operational model, and outdoor unit return air temperature is transmitted to outdoor air phase To humidity operational model.Above-mentioned parameter operational model is recorded in air-conditioning system program with functional form, when program reads temperature Respective function is passed to after the value of degree sensor, and output valve is calculated.Output valve can be analyzed according to actual conditions, In the present embodiment, output valve and each parameter and standard output area are contrasted, while uploaded to further detailed in the webserver Analysis.Each value output area during the accessible work of above-mentioned each parameter and standard output area air-conditioning, is carrying out air-conditioning system operation Tested to obtain and be stored in air-conditioning system chip before parameter detecting, the above-mentioned webserver includes air-conditioning system operation ginseng The relevant database of number.
The present embodiment is established by using the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected The parameter operational model of air-conditioning, when operation of air conditioner, the temperature of the preset position is gathered, the temperature value then collected passes through Parameter operational model converts output parameter, and running state of air conditioner is carried out according to the output parameter to analyze the void reached to air-conditioning Intend detection.Value to be detected during with regard to that can obtain operation of air conditioner is solved without using a variety of metering outfits so as to enter to air-conditioning state Row detection, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Further, reference picture 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 includes outdoor heat exchanger Outlet pressure operational model, Compressor Discharge Pressure operational model and compressor return air pressure operational model, above-mentioned steps S10 Including:
Step S111, record the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under air-conditioning difference operating mode;
In the present embodiment, above-mentioned different operating modes refer to working condition of the air-conditioning under different environment temperatures, said temperature Distribution refers to the distribution of indoor heat exchanger and outdoor heat exchanger surface each point temperature.Wherein obtain said temperature distribution Method be by using Fluent software sunykatuib analyses.
Step S112, the preset probability interval of saturated-steam temperature is obtained according to the temperature distribution state;
In the present embodiment, above-mentioned preset probability interval refers under different operating modes, based on indoor heat exchanger and outdoor heat exchange Device Temperature Distribution, test the maximum physical region of the appearance saturated-steam temperature value found.Can be according to actual conditions and reality The number tested chooses maximum physical region, for example, in 8 experiments, can choose and saturated-steam temperature occurs more than 3 times Regional choice is preset probability interval.
Step S113, the first saturated-steam temperature of air-conditioning system indoor heat exchanger is analyzed by the preset probability interval With the second saturated-steam temperature of outdoor heat exchanger;
In the present embodiment, the acquisition methods of the saturated-steam temperature are, by being distributed in above-mentioned preset probability interval Temperature sensor obtains the position temperature, and the average value of temperature, is exactly saturated-steam temperature in acquired preset probability interval.Example Such as, the temperature that three regions of outdoor heat exchanger obtain is respectively 16 DEG C, 17 DEG C and 18 DEG C, then the saturated vapor of outdoor heat exchanger Temperature is 17 DEG C.
Step S114, the outlet pressure computing mould of the outdoor heat exchanger is established according to second saturated-steam temperature Type;
In the present embodiment, the outlet pressure of the outdoor heat exchanger is obtained according to saturated-steam temperature and the pressure table of comparisons , before air-conditioning system operational parameter detection is carried out, saturated-steam temperature is stored in air-conditioning system chip with the pressure table of comparisons. Meanwhile before detection design a model experiment when, by table look-up with actual pressure instrument detection compare, obtain outdoor heat exchanger Error is designated as S1 between outlet pressure calculating value and detected value, and many experiments the average calculation error is designated as Sx1, it is possible to understand that It is that precision and test period, the number of calculating have certain relation, and experimental period, number can be determined by actual conditions.In air-conditioning The value of above-mentioned second saturated-steam temperature got in operation program with variable Td storages, the outlet pressure of above-mentioned outdoor heat exchanger Power operational model is that Pcc=P (Td)+Sx1 is represented with function.When the program is run, program reads the value calculating of temperature sensor Mean temperature obtains the value of the second saturated-steam temperature Td, and variable Td then is put into saturated-steam temperature and compareed with pressure Searched in table and obtain the exit pressure levels Pcc of the outdoor heat exchanger plus mean error Sx1.
Step S115, according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described Two saturated-steam temperatures establish the Compressor Discharge Pressure operational model;
In the present embodiment, the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger the saturation pressure force is root According to formula Δ P=β2ΔPrated 2Be calculated, wherein β is that different operating modes correspond to different constant values, that is, exist different operating modes with β mapping table, the table are stored in air-conditioning system chip before air-conditioning system operational parameter detection is carried out, Δ PratedIt is root Dispatch from the factory what parameter was calculated according to compressor, calculated before detection according to specific air-conditioning system and sky is stored in the form of constant Adjust in operation program.Meanwhile before detection design a model experiment when, by table look-up with actual pressure instrument detection compare, obtain S2 is designated as to error between the calculated value and detected value of Compressor Discharge Pressure, many experiments the average calculation error is designated as Sx2, can With understanding, precision and test period, the number of calculating have certain relation, and experimental period, number can determine by actual conditions It is fixed.In operation program the first pressure drop between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is preserved with variable P1 Value, passes through function P1=β2ΔPrated 2Compressor Discharge Pressure P1 value is calculated, compressor air-discharging pressure is preserved with variable Pd Force value, according to the second saturated-steam temperature Td, Compressor Discharge Pressure operational model is represented with function Pd=P (Td)+P1+Sx2. When operation of air conditioner, the value calculating mean temperature that program reads temperature sensor obtains the second saturated-steam temperature Td's Value, is then put into saturated-steam temperature with being searched in the pressure table of comparisons by variable Td, is inquired about by different temperatures corresponding to operating mode Operating mode and β mapping table obtain β value and P1 value are calculated, and in conjunction with mean error Sx2, pass through function Pd=P (Td) compressor return air pressure value is calculated in+P1+Sx2.
Step S116, steamed according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and first saturation Stripping temperature establishes the compressor return air pressure operational model.
In the present embodiment, in the experimentation to design a model before carrying out air-conditioning system operational parameter detection, by looking into Table compares with the detection of actual pressure instrument, and error is expressed as S3 between obtaining the calculated value and detected value of compressor return air pressure, Many experiments the average calculation error is designated as Sx3, it is to be understood that and the precision of calculating has certain relation with test period, number, Experimental period, number can be determined by actual conditions.Above-mentioned first saturation got in operation program with variable Ts storages The value of vapor (steam) temperature, the pressure drop between indoor heat exchanger and Compressor Discharge Pressure, above-mentioned compressor return-air pressure are stored with variable P2 Power operational model represents that wherein P (Ts) represents to table look-up to obtain pressure value according to temperature Ts with function Ps=P (Ts)+P2+Sx3.When During operation of air conditioner, the value calculating mean temperature that program reads temperature sensor obtains the value of the first saturated-steam temperature Ts, Then variable Ts is put into saturated-steam temperature with being searched in the pressure table of comparisons, operating mode is inquired about by different temperatures corresponding to operating mode β value is obtained with β mapping table and P2 value is calculated, and in conjunction with mean error Sx1, passes through function Ps=P (Ts)+P2 Compressor return air pressure value is calculated in+Sx3.
The present embodiment establishes model by the relation between temperature and pressure, can be in operation of air conditioner according to detecting Temperature is worth to outdoor heat exchanger exit pressure levels, Compressor Discharge Pressure value, compressor return air pressure value.It should illustrate It is that simultaneously the relations of dependence are not present in above-mentioned steps S114 to step S116, therefore its sequencing performed can adjust, specifically Ground, in actual applications, outdoor heat exchanger outlet pressure operational model, compressor air-discharging pressure can also be established according to being actually needed One or both of power operational model, compressor return air pressure model.
Further, reference picture 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 3rd embodiment of the present invention, above-mentioned parameter operational model also includes mass flow Operational model, above-mentioned steps S10 also include:
Step S121, according to first voltage drop value, second voltage drop value, first saturated-steam temperature, described Second saturated-steam temperature establishes the mass flow operational model.
In the present embodiment, above-mentioned mass flow operational model obtains according to temperature, pressure and quality controls table, is entering Before row air-conditioning system operational parameter detection, it is stored in air-conditioning system chip.In air-conditioning system program, matter is preserved with variable m The value of flow is measured, mass flow m calculating process is represented with function m=(P1, P2, Td, Ts).When the program is run, with reference to pressure The first pressure drop P1, indoor heat exchanger saturation pressure force and compressor between contracting machine pressure at expulsion and outdoor heat exchanger saturation pressure force The second saturation of the second pressure drop P2, indoor heat exchanger the first saturated vapour pressure Ts and outdoor heat exchanger between pressure at expulsion are steamed Stripping temperature Td searches temperature, pressure and obtains the value of mass flow with quality controls table.
The present embodiment establishes model by the relation between temperature, pressure and mass flow, can in operation of air conditioner root Mass flow value is worth to according to the temperature detected.
Further, reference picture 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 fourth embodiment of the present invention, above-mentioned parameter operational model also includes compressor and consumed Work(operational model, above-mentioned steps S10 also include:
Step S131, collect and process machine suction temperature and delivery temperature;
Step S132, compressor return air enthalpy is obtained according to the compressor return air pressure and the compressor return air temperature Value;Compressor air-discharging enthalpy is obtained according to the Compressor Discharge Pressure and the delivery temperature;
Step S133, according to the mass flow operational model, the compressor return air enthalpy, the compressor air-discharging enthalpy Value establishes the compressor wasted work operational model.
In the present embodiment, above-mentioned compressor suction temperature and delivery temperature are to pass through temperature in compressor return air mouth and exhaust outlet Degree sensor detects what is obtained.The compressor return air enthalpy obtains according to the pressure and temp enthalpy table of comparisons, is carrying out sky Before adjusting system operational parameter detection, it is stored in air-conditioning system chip.In air-conditioning system program, distinguished with variable Tys and Tyd Above-mentioned compressor suction temperature, above-mentioned delivery temperature are preserved, with function hs=H (Ps, Tys), hd=H (Pd, Tyd) is represented respectively The compressor return air enthalpy, exhaust enthalpy calculating process, the value of compressor wasted work, the fortune of compressor wasted work are preserved with variable W Model is calculated to be represented with function W=m* (hd-hs).When the program is run, the temperature value of compressor return air mouth and exhaust outlet, knot are read The value of compressor back pressure and pressure at expulsion is closed, pressure temperature is searched by function hs=H (Ps, Tys) and hd=H (Pd, Tyd) The degree enthalpy table of comparisons obtains the compressor return air enthalpy and exhaust enthalpy, and pressure is calculated further according to function W=m* (hd-hs) The value of contracting machine wasted work.
For the present embodiment by temperature, pressure and enthalpy, the relation between enthalpy, quality and compressor wasted work establishes model, The value of compressor wasted work can be worth to according to the temperature detected in operation of air conditioner.
Further, reference picture 5, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, In the embodiment of air-conditioning system operational factor virtual detection method the 5th of the present invention, above-mentioned parameter operational model also includes the coefficient of performance Operational model, above-mentioned steps S10 also include:
Step S141, gather outdoor heat exchanger inlet temperature and outlet temperature;
Step S142, freezed according to the outlet pressure of the outdoor heat exchanger inlet temperature and the outdoor heat exchanger First import enthalpy of the agent in outdoor heat exchanger;Obtain refrigerant according to the outlet temperature and the compressor return air pressure and exist The first outlet enthalpy of outdoor heat exchanger;
Step S143, according to the first import enthalpy, the first outlet enthalpy and the mass flow operational model Obtain condensation heat;
Step S144, the coefficient of performance computing mould is established according to the condensation heat and the compressor wasted work operational model Type.
In the present embodiment, the inlet temperature and outlet temperature of above-mentioned outdoor heat exchanger be outdoor heat exchanger import and go out Mouth setting temperature sensor collection.First import enthalpy of above-mentioned outdoor heat exchanger and the first outlet enthalpy of outdoor heat exchanger Obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, the table is stored in air-conditioning system In system chip.In air-conditioning system program, the outdoor heat exchanger that detection obtains is preserved respectively with variable Tcin and Tcout Inlet temperature, the outlet temperature, the refrigerant is preserved respectively with variable hcin and hcout and is entered the first of outdoor heat exchanger Mouth enthalpy, first outlet enthalpy, according to pressure and temp enthalpy relation, with function hcin=h (Tcin, Pcc), hcout=h (Tcout, Ps) represents the first import enthalpy of the outdoor heat exchanger and the calculating process of first outlet enthalpy.With variable Qcon The value of condensation heat is preserved, the calculating process of condensation heat is represented with function Qcon=m* (hcin-hcout), with variable COP keeping qualities The value of energy coefficient, coefficient of performance model are represented with function COP=(Qcon-W)/W.When the program is run, program reads corresponding positions The value of temperature sensor is put, the value of the hcin and hcout are obtained by searching the pressure and temp enthalpy table of comparisons, then in conjunction with matter Flow m value is measured, the value of condensation heat is calculated by function Qcon=m* (hcin-hcout), finally by function COP= (Qcon-W) value of the coefficient of performance is calculated in/W.
The present embodiment passes through temperature, pressure and enthalpy, quality, enthalpy and condensation heat, condensation heat, compressor wasted work and performance Relation between coefficient establishes model, can be worth to the value of the coefficient of performance according to the temperature detected in operation of air conditioner.
Further, reference picture 6, it is above-mentioned based on air-conditioning system operational factor virtual detection method of the present invention, in the present invention In air-conditioning system operational factor virtual detection method sixth embodiment, above-mentioned parameter operational model also includes indoor air quantity computing mould Type, above-mentioned steps S10 also include:
Step S151, gather indoor return air temperature and wind pushing temperature;
Step S152, indoor return air enthalpy is obtained according to the indoor return air temperature and room atmosphere pressure;Sent according to described Air temperature and the room atmosphere pressure obtain indoor air-supply enthalpy;
Step S153, the system of system is obtained according to the compressor wasted work operational model and the coefficient of performance operational model Cold;
Step S154, wind is obtained according to the refrigerating capacity of the system, the indoor return air enthalpy, the indoor air-supply enthalpy Measure mass flow;
Step S155, according to being established the air quantity mass flow, the indoor return air temperature, room atmosphere pressure Indoor air quantity operational model.
In the present embodiment.Above-mentioned room atmosphere pressure is standard environment atmospheric pressure, is worth for 101*105Pa.Above-mentioned indoor return air Temperature and wind pushing temperature are that return air inlet and air outlet set temperature sensor to gather indoors.Above-mentioned indoor return air enthalpy and room What interior air-supply enthalpy obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, the table is deposited Storage is in air-conditioning system chip.In air-conditioning system program, the interior that detection obtains is preserved respectively with variable Tin and Tout Return air temperature, wind pushing temperature, with the value of atmospheric value in constant P preserving chambers, P=101*105, with function hin=(P, Tin) and Hout=(P, Tout) represents the calculating process of indoor return air enthalpy and indoor air-supply enthalpy respectively, and system is preserved with variable Qref Refrigerating capacity, the calculating process of refrigerating capacity is represented with function Qref=W/COP, air quantity mass flow value is preserved with variable qm, uses Function qm=Qref/ (hout-hin) represents air quantity mass flow calculation process, with airflow value in variable qv preserving chambers, uses function Qv=(qm*R*Tin)/P represents indoor Wind Coverage Calculation process, and wherein R value is 8.314.When the program is run, program reads phase The value of position temperature sensor is answered, the compressor return air enthalpy and return-air enthalpy are obtained by searching pressure and temp enthalpy corresponding table Value, with reference to the value of compressor mass flow and compressor performance coefficient, the refrigerating capacity of system is calculated, further according to function qm= The value of air quantity mass flow is calculated in Qref/ (hout-hin), is calculated finally by function qv=(qm*R*Tin)/P The value of indoor air quantity.
The present embodiment passes through temperature, pressure and enthalpy, compressor wasted work, the coefficient of performance and cooling system amount, cooling system Amount, enthalpy and air quantity mass flow, the relation between air quantity mass flow, room atmosphere pressure and indoor air quantity establish model, energy Enough values for being worth to indoor air quantity according to the temperature detected in operation of air conditioner.
Further, reference picture 7, based on air-conditioning system operational factor virtual detection method above-described embodiment of the present invention, In the embodiment of air-conditioning system operational factor virtual detection method the 7th of the present invention, above-mentioned parameter operational model also includes room air Relative humidity operational model and outdoor air relative humidity operational model, above-mentioned steps S10 include:
Step S161, it is relatively wet that the room air is obtained according to the indoor return air enthalpy and the indoor air-supply enthalpy Spend operational model;
Step S162, gather outdoor unit return air temperature;
Step S163, outdoor unit return air enthalpy is obtained according to the outdoor unit return air temperature and outside atmosphere pressure;
Step S164, outdoor condensation heat is obtained according to the refrigerating capacity of the compressor wasted work operational model and the system;
Step S165, outdoor unit air-supply enthalpy is obtained according to the outdoor condensation heat and the outdoor unit return air enthalpy;
Step S166, the outdoor air phase is obtained according to outdoor unit air-supply enthalpy and the outdoor unit return air enthalpy To humidity operational model.
In the present embodiment, above-mentioned outside atmosphere pressure is standard environment atmospheric pressure, is worth for 101*105Pa.Above-mentioned outdoor unit returns Air temperature and wind pushing temperature are to set temperature sensor to gather in outdoor unit return air inlet and air outlet.Above-mentioned outdoor unit return air enthalpy What value and outdoor unit air-supply enthalpy obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, The table is stored in air-conditioning system chip.In air-conditioning system program, indoor air relative humidity value is preserved with variable Sin, The computing of indoor air relative humidity is represented with function Sin=h (P, Tin)/h (P, Tout), outdoor condensation heat is represented with Qcon, The computing of outdoor condensation heat is represented with function Qcon=Qref+W, with variable Twin preserve outdoor unit return air temperature, with hwin with Hwout represents outdoor unit return air enthalpy, outdoor unit air-supply enthalpy respectively, with the value of atmospheric value in constant Pout preserving chambers, Pout=101*105, with function hwin=(Pout, Twin) represent outdoor unit return air enthalpy table lookup operations, with function hwout =Qcon/hwin represents the calculating of outdoor unit air-out enthalpy, with the value of relative air humidity outside variable Sout preserving chambers, uses function Sout=hwin/hwout represents the calculating of outdoor air relative humidity.When the program is run, according to indoor return air enthalpy and room Indoor air relative humidity model is calculated by function Sin=h (P, Tin)/h (P, Tout) in interior air-supply enthalpy, according to room Value of the interior condensation heat with compressor wasted work by function Qcon=Qref+W counting chambers condensed exterior heat, program read outdoor unit return air The value Twin of the temperature sensor of mouth, obtains outdoor unit return air enthalpy hwin, then by searching the pressure and temp enthalpy table of comparisons Outdoor unit air-out enthalpy is calculated by function hwout=Qcon/hwin, calculated finally by function Sout=hwin/hwout To the value of outdoor air relative humidity.
The present embodiment is consumed by temperature, pressure and enthalpy, enthalpy and relative air humidity, the refrigerating capacity of system, compressor Work(and condensation heat, condensation heat and enthalpy, the relation between enthalpy and relative air humidity establish model, can be in operation of air conditioner Temperature according to detecting is worth to the value of indoor air relative humidity and outdoor air relative humidity.On it should be noted that State step S161 and step S162 to S165 and the relations of dependence are not present, therefore its sequencing performed can adjust, specifically Ground, in actual applications, indoor air relative humidity, outdoor air relative humidity can also be established wherein according to being actually needed One of.
The present invention further provides a kind of air-conditioning system operational factor virtual detector, reference picture 8, there is provided the present invention Air-conditioning system operational factor virtual detector first embodiment, in the embodiment, air-conditioning system operational factor virtual detection dress Put including:
Modeling module 10, built for the incidence relation between the temperature according to air-conditioning preset position and operational factor to be detected The parameter operational model of vertical air-conditioning;
In the present embodiment, above-mentioned air-conditioning preset position includes:The region of the appearance saturated-steam temperature obtained by testing, Compressor return air mouth and exhaust outlet, outdoor heat exchanger import and outlet, indoor set return air inlet and air outlet, outdoor unit return air inlet. Specifically, in each position temperature sensor can be set to carry out temperature acquisition.Above-mentioned operational factor to be detected can include outdoor The outlet pressure of 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, pressure Contracting machine pressure at expulsion model, compressor return air pressure model, mass flow model, can by detection saturated-steam temperature occur Region obtain;Compressor wasted work model can be obtained by mass flow model and detection compressor return air mouth with exhaust port temperatures Arrive;Coefficient of performance model can be by changing outside outdoor heat exchanger outlet pressure model, compressor return air pressure model and sensing chamber Hot device import obtains with outlet temperature;Indoor air quantity can pass through mass flow model, compressor wasted work model, outdoor heat exchanger Outlet pressure model and detection outdoor heat exchanger import obtain with outlet temperature;Indoor air relative humidity can pass through sensing chamber Interior machine return air inlet obtains with air outlet temperature;Outdoor air relative humidity can pass through compressor wasted work model, performance demands digital-to-analogue Type and detection outdoor unit return air inlet temperature obtain.
Temperature collect module 20, for when operation of air conditioner, gathering the temperature of the air-conditioning preset position;
In the present embodiment, before air-conditioning system operational parameter detection is carried out, above-mentioned preset position is pre- in air-conditioning to be detected Temperature sensor is first set.After air-conditioning start operation, the temperature sensor pre-set can detect the temperature of the position in real time Angle value, the program in air-conditioning chip read the temperature value in each temperature sensor according to sometime interval, and the time interval can To be configured according to actual conditions.
Output module 30, for being treated described in the temperature according to the air-conditioning preset position and parameter operational model output Detect operational factor.
In the present embodiment, the saturated-steam temperature of outdoor heat exchanger and indoor heat exchanger passes to Compressor Discharge Pressure mould Type, compressor return air pressure model, outdoor heat exchanger outlet pressure model and mass flow model, compressor return air temperature and row Temperature degree passes to compressor wasted work operational model, and outdoor heat exchanger inlet temperature and outlet temperature pass to coefficient of performance computing Model, indoor return air temperature and wind pushing temperature temperature are transmitted to air quantity operational model, and outdoor unit return air temperature is transmitted to outdoor air phase To humidity operational model.Above-mentioned parameter operational model is recorded in air-conditioning system program with functional form, when program reads temperature Respective function is passed to after the value of degree sensor, and output valve is calculated.Output valve can be analyzed according to actual conditions, In the present embodiment, output valve and each parameter and standard output area are contrasted, while uploaded to further detailed in the webserver Analysis.Each value output area during the accessible work of above-mentioned each parameter and standard output area air-conditioning, is carrying out air-conditioning system fortune Tested to obtain before row parameter detecting and be stored in air-conditioning system chip, the above-mentioned webserver is run comprising air-conditioning system The database of relating to parameters.
The present embodiment is established by using the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected The parameter operational model of air-conditioning, when operation of air conditioner, the temperature of the preset position is gathered, the temperature value then collected passes through Parameter operational model converts output parameter, and running state of air conditioner is carried out according to the output parameter to analyze the void reached to air-conditioning Intend detection.Value to be detected during with regard to that can obtain operation of air conditioner is solved without using a variety of metering outfits so as to enter to air-conditioning state Row detection, reduces detection of air-conditioning cost, improves detection of air-conditioning stability and accuracy.
Further, reference picture 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 includes outdoor heat exchanger Outlet pressure operational model, Compressor Discharge Pressure operational model and compressor return air pressure operational model, above-mentioned modeling mould Block 10 includes:
Statistic unit 111, for recording the Temperature Distribution shape of indoor heat exchanger and outdoor heat exchanger under air-conditioning difference operating mode State;
In the present embodiment, above-mentioned different operating modes refer to working condition of the air-conditioning under different environment temperatures, said temperature Distribution refers to the distribution of indoor heat exchanger and outdoor heat exchanger surface each point temperature.Wherein obtain said temperature distribution Method be by using Fluent software sunykatuib analyses.
Acquiring unit 112, for obtaining the preset probability interval of saturated-steam temperature according to the temperature distribution state;
In the present embodiment, above-mentioned preset probability interval refers under different operating modes, based on indoor heat exchanger and outdoor heat exchange Device Temperature Distribution, test the maximum physical region of the appearance saturated-steam temperature value found.Can be according to actual conditions and reality The number tested chooses maximum physical region, for example, in 8 experiments, can choose and saturated-steam temperature occurs more than 3 times Regional choice is preset probability interval.
Analytic unit 113, for analyzing the first saturation of air-conditioning system indoor heat exchanger by the preset probability interval Second saturated-steam temperature of vapor (steam) temperature and outdoor heat exchanger;
In the present embodiment, the acquisition methods of the saturated-steam temperature are, by being distributed in above-mentioned preset probability interval Temperature sensor obtains the position temperature, and the average value of temperature, is exactly saturated-steam temperature in acquired preset probability interval.Example Such as, the temperature that three regions of outdoor heat exchanger obtain is respectively 16 DEG C, 17 DEG C and 18 DEG C, then the saturated vapor of outdoor heat exchanger Temperature is 17 DEG C.
First modeling unit 114, for establishing the outlet of the outdoor heat exchanger according to second saturated-steam temperature Pressure operational model;Satisfied according to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and described second The Compressor Discharge Pressure operational model is established with vapor (steam) temperature;According between indoor heat exchanger and Compressor Discharge Pressure Two voltage drop values and first saturated-steam temperature establish the compressor return air pressure operational model.
In the present embodiment, the outlet pressure of the outdoor heat exchanger is obtained according to saturated-steam temperature and the pressure table of comparisons , before air-conditioning system operational parameter detection is carried out, saturated-steam temperature is stored in air-conditioning system chip with the pressure table of comparisons. Meanwhile before detection design a model experiment when, by table look-up with actual pressure instrument detection compare, obtain outdoor heat exchanger Error is designated as S1 between outlet pressure calculating value and detected value, and many experiments the average calculation error is designated as Sx1, it is possible to understand that It is that precision and test period, the number of calculating have certain relation, and experimental period, number can be determined by actual conditions.In air-conditioning The value of above-mentioned second saturated-steam temperature got in operation program with variable Td storages, the outlet pressure of above-mentioned outdoor heat exchanger Power operational model is that Pcc=P (Td)+Sx1 is represented with function.When the program is run, program reads the value calculating of temperature sensor Mean temperature obtains the value of the second saturated-steam temperature Td, and variable Td then is put into saturated-steam temperature and compareed with pressure Searched in table and obtain the exit pressure levels Pcc of the outdoor heat exchanger plus mean error Sx1.
Wherein, the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger the saturation pressure force is according to formula Δ P=β2ΔPrated 2It is calculated, wherein β is that different operating modes correspond to different constant values, that is, different operating modes and β pair be present Relation table is answered, the table is stored in air-conditioning system chip before air-conditioning system operational parameter detection is carried out, Δ PratedIt is according to pressure Contracting machine dispatches from the factory what parameter was calculated, is calculated before detection according to specific air-conditioning system and air-conditioning fortune is stored in the form of constant Calculate in program.Meanwhile before detection design a model experiment when, by table look-up with actual pressure instrument detection compare, pressed Error is designated as S2 between the calculated value and detected value of contracting machine pressure at expulsion, and many experiments the average calculation error is designated as Sx2, Ke Yili Solution, precision and test period, the number of calculating have certain relation, and experimental period, number can be determined by actual conditions. The first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure force is preserved with variable P1 in operation program, is passed through Function P1=β2ΔPrated 2Compressor Discharge Pressure P1 value is calculated, Compressor Discharge Pressure value, root are preserved with variable Pd According to the second saturated-steam temperature Td, Compressor Discharge Pressure operational model is represented with function Pd=P (Td)+P1+Sx2.Work as air-conditioning During operation, the value calculating mean temperature that program reads temperature sensor obtains the value of the second saturated-steam temperature Td, then Variable Td is put into saturated-steam temperature with being searched in the pressure table of comparisons, operating mode and β are inquired about by different temperatures corresponding to operating mode Mapping table obtain β value and P1 value be calculated, in conjunction with mean error Sx2, pass through function Pd=P (Td)+P1+ Compressor return air pressure value is calculated in Sx2.
Wherein, in the experimentation to design a model before carrying out air-conditioning system operational parameter detection, by tabling look-up and in fact Border pressure tool detection compares, and error is expressed as S3 between obtaining the calculated value and detected value of compressor return air pressure, repeatedly real Test the average calculation error and be designated as Sx3, it is to be understood that the precision of calculating and test period, number have certain relation, during experiment Between, number can determine by actual conditions.The above-mentioned first saturated vapor temperature got in operation program with variable Ts storages The value of degree, the pressure drop between indoor heat exchanger and Compressor Discharge Pressure, above-mentioned compressor back pressure computing are stored with variable P2 Model represents that wherein P (Ts) represents to table look-up to obtain pressure value according to temperature Ts with function Ps=P (Ts)+P2+Sx3.When air-conditioning is transported During row, the value calculating mean temperature that program reads temperature sensor obtains the value of the first saturated-steam temperature Ts, then will Variable Ts is put into saturated-steam temperature with being searched in the pressure table of comparisons, and operating mode and β are inquired about by different temperatures corresponding to operating mode Mapping table obtains β value and P2 value is calculated, and in conjunction with mean error Sx1, passes through function Ps=P (Ts)+P2+Sx3 Compressor return air pressure value is calculated.
The present embodiment establishes model by the relation between temperature and pressure, can be in operation of air conditioner according to detecting Temperature is worth to outdoor heat exchanger exit pressure levels, Compressor Discharge Pressure value, compressor return air pressure value.It should illustrate It is outlet pressure operational model, Compressor Discharge Pressure operational model in above-mentioned modeling unit 114, compressor return air pressure Between operational model three and the relations of dependence are not present, therefore in actual applications, can also be included wherein according to being actually needed One or both.
Further, reference picture 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 3rd embodiment of the present invention, above-mentioned parameter operational model also includes mass flow Operational model, above-mentioned modeling module 10 also include:
Second modeling unit 121, for being steamed according to first voltage drop value, second voltage drop value, first saturation Stripping temperature, second saturated-steam temperature establish the mass flow operational model.
In the present embodiment, above-mentioned mass flow operational model obtains according to temperature, pressure and quality controls table, is entering Before row air-conditioning system operational parameter detection, it is stored in air-conditioning system chip.In air-conditioning system program, matter is preserved with variable m The value of flow is measured, mass flow m calculating process is represented with function m=(P1, P2, Td, Ts).When the program is run, with reference to pressure The first pressure drop P1, indoor heat exchanger saturation pressure force and compressor between contracting machine pressure at expulsion and outdoor heat exchanger saturation pressure force The second saturation of the second pressure drop P2, indoor heat exchanger the first saturated vapour pressure Ts and outdoor heat exchanger between pressure at expulsion are steamed Stripping temperature Td searches temperature, pressure and obtains the value of mass flow with quality controls table.
The present embodiment establishes model by the relation between temperature, pressure and mass flow, can in operation of air conditioner root Mass flow value is worth to according to the temperature detected.
Further, reference picture 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 fourth embodiment of the present invention, above-mentioned parameter operational model also includes compressor and consumed Work(operational model, above-mentioned modeling module 10 also include:
First temperature collecting cell 131, for collect and process machine suction temperature and delivery temperature;
First arithmetic element 132, for being pressed according to the compressor return air pressure and the compressor return air temperature Contracting machine return-air enthalpy;For obtaining compressor air-discharging enthalpy according to the Compressor Discharge Pressure and the delivery temperature;
3rd modeling unit 133, for according to the mass flow operational model, the compressor return air enthalpy, described Compressor air-discharging enthalpy establishes the compressor wasted work operational model.
In the present embodiment, above-mentioned compressor suction temperature and delivery temperature are to pass through temperature in compressor return air mouth and exhaust outlet Degree sensor detects what is obtained.The compressor return air enthalpy obtains according to the pressure and temp enthalpy table of comparisons, is carrying out sky Before adjusting system operational parameter detection, it is stored in air-conditioning system chip.In air-conditioning system program, distinguished with variable Tys and Tyd Above-mentioned compressor suction temperature, above-mentioned delivery temperature are preserved, with function hs=H (Ps, Tys), hd=H (Pd, Tyd) is represented respectively The compressor return air enthalpy, exhaust enthalpy calculating process, the value of compressor wasted work, the fortune of compressor wasted work are preserved with variable W Model is calculated to be represented with function W=m* (hd-hs).When the program is run, the temperature value of compressor return air mouth and exhaust outlet, knot are read The value of compressor back pressure and pressure at expulsion is closed, pressure temperature is searched by function hs=H (Ps, Tys) and hd=H (Pd, Tyd) The degree enthalpy table of comparisons obtains the compressor return air enthalpy and exhaust enthalpy, and pressure is calculated further according to function W=m* (hd-hs) The value of contracting machine wasted work.
For the present embodiment by temperature, pressure and enthalpy, the relation between enthalpy, quality and compressor wasted work establishes model, The value of compressor wasted work can be worth to according to the temperature detected in operation of air conditioner.
Further, reference picture 12, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, In the embodiment of air-conditioning system operational factor virtual detector the 5th of the present invention, above-mentioned parameter operational model also includes the coefficient of performance Operational model, above-mentioned modeling module 10 also include:
Second temperature collecting unit 141, for gathering the inlet temperature and outlet temperature of outdoor heat exchanger;
Second arithmetic element 142, for the outlet pressure system according to the inlet temperature and the outdoor heat exchanger First import enthalpy of the cryogen in outdoor heat exchanger;Refrigerant is obtained according to the outlet temperature and the compressor return air pressure In the first outlet enthalpy of outdoor heat exchanger;
3rd arithmetic element 143, for according to the first import enthalpy, the first outlet enthalpy and the quality stream Amount operational model obtains condensation heat;
4th modeling unit 144, for establishing the property according to the condensation heat and the compressor wasted work operational model Can coefficient operational model.
In the present embodiment, the inlet temperature and outlet temperature of above-mentioned outdoor heat exchanger be outdoor heat exchanger import and go out Mouth setting temperature sensor collection.First import enthalpy of above-mentioned outdoor heat exchanger and the first outlet enthalpy of outdoor heat exchanger Obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, the table is stored in air-conditioning system In system chip.In air-conditioning system program, the outdoor heat exchanger that detection obtains is preserved respectively with variable Tcin and Tcout Inlet temperature, the outlet temperature, the refrigerant is preserved respectively with variable hcin and hcout and is entered the first of outdoor heat exchanger Mouth enthalpy, first outlet enthalpy, according to pressure and temp enthalpy relation, with function hcin=h (Tcin, Pcc), hcout=h (Tcout, Ps) represents the first import enthalpy of the outdoor heat exchanger and the calculating process of first outlet enthalpy.With variable Qcon The value of condensation heat is preserved, the calculating process of condensation heat is represented with function Qcon=m* (hcin-hcout), with variable COP keeping qualities The value of energy coefficient, coefficient of performance model are represented with function COP=(Qcon-W)/W.When the program is run, program reads corresponding positions The value of temperature sensor is put, the value of the hcin and hcout are obtained by searching the pressure and temp enthalpy table of comparisons, then in conjunction with matter Flow m value is measured, the value of condensation heat is calculated by function Qcon=m* (hcin-hcout), finally by function COP= (Qcon-W) value of the coefficient of performance is calculated in/W.
The present embodiment passes through temperature, pressure and enthalpy, quality, enthalpy and condensation heat, condensation heat, compressor wasted work and performance Relation between coefficient establishes model, can be worth to the value of the coefficient of performance according to the temperature detected in operation of air conditioner.
Further, reference picture 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 sixth embodiment of the present invention, above-mentioned parameter operational model also includes indoor air quantity Operational model, above-mentioned modeling module 10 also include:
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 the indoor return air temperature and room atmosphere pressure; Indoor air-supply enthalpy is obtained according to the wind pushing temperature and the room atmosphere pressure;
5th arithmetic element 153, for according to the compressor wasted work operational model and the coefficient of performance operational model Obtain the refrigerating capacity of system;
6th arithmetic element 154, for the refrigerating capacity according to the system, the indoor return air enthalpy, indoor air-supply enthalpy It is worth to air quantity mass flow;
5th modeling unit 155, for big according to the air quantity mass flow, the indoor return air temperature, the interior Air pressure establishes the indoor air quantity operational model.
In the present embodiment.Above-mentioned room atmosphere pressure is standard environment atmospheric pressure, is worth for 101*105Pa.Above-mentioned indoor return air Temperature and wind pushing temperature are that return air inlet and air outlet set temperature sensor to gather indoors.Above-mentioned indoor return air enthalpy and room What interior air-supply enthalpy obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, the table is deposited Storage is in air-conditioning system chip.In air-conditioning system program, the interior that detection obtains is preserved respectively with variable Tin and Tout Return air temperature, wind pushing temperature, with the value of atmospheric value in constant P preserving chambers, P=101*105, with function hin=(P, Tin) and Hout=(P, Tout) represents the calculating process of indoor return air enthalpy and indoor air-supply enthalpy respectively, and system is preserved with variable Qref Refrigerating capacity, the calculating process of refrigerating capacity is represented with function Qref=W/COP, air quantity mass flow value is preserved with variable qm, uses Function qm=Qref/ (hout-hin) represents air quantity mass flow calculation process, with airflow value in variable qv preserving chambers, uses function Qv=(qm*R*Tin)/P represents indoor Wind Coverage Calculation process, and wherein R value is 8.314.When the program is run, program reads phase The value of position temperature sensor is answered, the compressor return air enthalpy and return-air enthalpy are obtained by searching pressure and temp enthalpy corresponding table Value, with reference to the value of compressor mass flow and compressor performance coefficient, the refrigerating capacity of system is calculated, further according to function qm= The value of air quantity mass flow is calculated in Qref/ (hout-hin), is calculated finally by function qv=(qm*R*Tin)/P The value of indoor air quantity.
The present embodiment passes through temperature, pressure and enthalpy, compressor wasted work, the coefficient of performance and cooling system amount, cooling system Amount, enthalpy and air quantity mass flow, the relation between air quantity mass flow, room atmosphere pressure and indoor air quantity establish model, energy Enough values for being worth to indoor air quantity according to the temperature detected in operation of air conditioner.
Further, reference picture 14, based on air-conditioning system operational factor virtual detector above-described embodiment of the present invention, In the embodiment of air-conditioning system operational factor virtual detector the 7th of the present invention, above-mentioned parameter operational model also includes room air Relative humidity operational model and outdoor air relative humidity operational model, above-mentioned modeling module 10 also include:
6th modeling unit 161, for obtaining the room according to the indoor return air enthalpy and the indoor air-supply enthalpy Interior relative air humidity operational model;
4th temperature collecting cell 162, for gathering outdoor unit return air temperature;
7th arithmetic element 163, for obtaining outdoor unit return air according to the outdoor unit return air temperature and outside atmosphere pressure Enthalpy;
8th arithmetic element 164, for being obtained according to the refrigerating capacity of the compressor wasted work operational model and the system Outdoor condensation heat;
9th arithmetic element 165, for obtaining outdoor unit according to the outdoor condensation heat and the outdoor unit return air enthalpy Air-supply enthalpy;
7th modeling unit 166, for obtaining institute according to outdoor unit air-supply enthalpy and the outdoor unit return air enthalpy State outdoor air relative humidity operational model.
In the present embodiment, above-mentioned outside atmosphere pressure is standard environment atmospheric pressure, is worth for 101*105Pa.Above-mentioned outdoor unit returns Air temperature and wind pushing temperature are to set temperature sensor to gather in outdoor unit return air inlet and air outlet.Above-mentioned outdoor unit return air enthalpy What value and outdoor unit air-supply enthalpy obtained according to the pressure and temp enthalpy table of comparisons, before air-conditioning system operational parameter detection is carried out, The table is stored in air-conditioning system chip.In air-conditioning system program, indoor air relative humidity value is preserved with variable Sin, The computing of indoor air relative humidity is represented with function Sin=h (P, Tin)/h (P, Tout), outdoor condensation heat is represented with Qcon, The computing of outdoor condensation heat is represented with function Qcon=Qref+W, with variable Twin preserve outdoor unit return air temperature, with hwin with Hwout represents outdoor unit return air enthalpy, outdoor unit air-supply enthalpy respectively, with the value of atmospheric value in constant Pout preserving chambers, Pout=101*105, with function hwin=(Pout, Twin) represent outdoor unit return air enthalpy table lookup operations, with function hwout =Qcon/hwin represents the calculating of outdoor unit air-out enthalpy, with the value of relative air humidity outside variable Sout preserving chambers, uses function Sout=hwin/hwout represents the calculating of outdoor air relative humidity.When the program is run, according to indoor return air enthalpy and room Indoor air relative humidity model is calculated by function Sin=h (P, Tin)/h (P, Tout) in interior air-supply enthalpy, according to room Value of the interior condensation heat with compressor wasted work by function Qcon=Qref+W counting chambers condensed exterior heat, program read outdoor unit return air The value Twin of the temperature sensor of mouth, obtains outdoor unit return air enthalpy hwin, then by searching the pressure and temp enthalpy table of comparisons Outdoor unit air-out enthalpy is calculated by function hwout=Qcon/hwin, calculated finally by function Sout=hwin/hwout To the value of outdoor air relative humidity.
The present embodiment is consumed by temperature, pressure and enthalpy, enthalpy and relative air humidity, the refrigerating capacity of system, compressor Work(and condensation heat, condensation heat and enthalpy, the relation between enthalpy and relative air humidity establish model, can be in operation of air conditioner Temperature according to detecting is worth to the value of indoor air relative humidity and outdoor air relative humidity.On it should be noted that State modeling unit 161 and modeling unit 166 between the two and the relations of dependence are not present, therefore in actual applications, can be with root One of them is only included according to being actually needed.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (7)

  1. A kind of 1. air-conditioning system operational factor virtual detection method, it is characterised in that the air-conditioning system operational factor is virtually examined Survey method includes:
    The parameter computing mould of air-conditioning is established according to the incidence relation between the temperature of air-conditioning preset position and operational factor to be detected Type;
    When operation of air conditioner, the temperature of the air-conditioning preset position is gathered;
    The operational factor to be detected is exported according to the temperature of the air-conditioning preset position and the parameter operational model;
    The parameter operational model includes operational model, the computing mould of Compressor Discharge Pressure of the outlet pressure of outdoor heat exchanger The operational model of type and compressor return air pressure;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model includes:
    Record the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under air-conditioning difference operating mode;
    The preset probability interval of saturated-steam temperature is obtained according to the temperature distribution state;
    The first saturated-steam temperature and outdoor heat exchanger of air-conditioning system indoor heat exchanger are analyzed by the preset probability interval The second saturated-steam temperature;
    The operational model of the outlet pressure of the outdoor heat exchanger is established according to second saturated-steam temperature;According to compressor The first voltage drop value and second saturated-steam temperature between pressure at expulsion and outdoor heat exchanger saturation pressure establish the compression The operational model of machine pressure at expulsion;Satisfied according to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure and described first The operational model of the compressor return air pressure is established with vapor (steam) temperature.
  2. 2. air-conditioning system operational factor virtual detection method as claimed in claim 1, it is characterised in that the parameter computing mould Type also includes:Mass flow operational model;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model also includes:
    According to first voltage drop value, second voltage drop value, first saturated-steam temperature, the second saturated vapor temperature Degree establishes the mass flow operational model.
  3. 3. air-conditioning system operational factor virtual detection method as claimed in claim 2, it is characterised in that the parameter computing mould Type also includes:Compressor wasted work operational model;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model also includes:
    Collect and process machine suction temperature and delivery temperature;
    Compressor return air enthalpy is obtained according to the compressor return air pressure and the compressor return air temperature;According to the compression Machine pressure at expulsion obtains compressor air-discharging enthalpy with the delivery temperature;
    The pressure is established according to the mass flow operational model, the compressor return air enthalpy, the compressor air-discharging enthalpy Contracting machine wasted work operational model.
  4. 4. air-conditioning system operational factor virtual detection method as claimed in claim 3, it is characterised in that the parameter computing mould Type also includes:Coefficient of performance operational model;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model also includes:
    Gather outdoor heat exchanger inlet temperature and outlet temperature;
    Refrigerant is obtained in outdoor heat exchange according to the outlet pressure of the outdoor heat exchanger inlet temperature and the outdoor heat exchanger First import enthalpy of device;Refrigerant is obtained in outdoor heat exchanger according to the outlet temperature and the compressor return air pressure First outlet enthalpy;
    Condensation heat is obtained according to the first import enthalpy, the first outlet enthalpy and the mass flow operational model;
    The coefficient of performance operational model is established according to the condensation heat and the compressor wasted work operational model.
  5. 5. air-conditioning system operational factor virtual detection method as claimed in claim 4, it is characterised in that the parameter computing mould Type also includes:Indoor air quantity operational model;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model also includes:
    Gather indoor return air temperature and wind pushing temperature;
    Indoor return air enthalpy is obtained according to the indoor return air temperature and room atmosphere pressure;According to the wind pushing temperature and the room Interior atmospheric pressure obtains indoor air-supply enthalpy;
    The refrigerating capacity of system is obtained according to the compressor wasted work operational model and the coefficient of performance operational model;
    Air quantity mass flow is obtained according to the refrigerating capacity of the system, the indoor return air enthalpy, the indoor air-supply enthalpy;
    The indoor air quantity computing is established according to the air quantity mass flow, the indoor return air temperature, the room atmosphere pressure Model.
  6. 6. air-conditioning system operational factor virtual detection method as claimed in claim 5, it is characterised in that the parameter computing mould Type also includes:Indoor air relative humidity operational model and outdoor air relative humidity operational model;
    The incidence relation according between the temperature of air-conditioning preset position and operational factor to be detected establishes the parameter fortune of air-conditioning Calculating model also includes:
    The indoor air relative humidity operational model is obtained according to the indoor return air enthalpy and the indoor air-supply enthalpy;
    Gather outdoor unit return air temperature;
    Outdoor unit return air enthalpy is obtained according to the outdoor unit return air temperature and outside atmosphere pressure;
    Outdoor condensation heat is obtained according to the refrigerating capacity of the compressor wasted work operational model and the system;
    Outdoor unit air-supply enthalpy is obtained according to the outdoor condensation heat and the outdoor unit return air enthalpy;
    The outdoor air relative humidity computing mould is obtained according to outdoor unit air-supply enthalpy and the outdoor unit return air enthalpy Type.
  7. 7. a kind of air-conditioning system operational factor virtual detector, it is characterised in that the air-conditioning system operational factor is virtually examined Surveying device includes:
    Modeling module, air-conditioning is established for the incidence relation between the temperature according to air-conditioning preset position and operational factor to be detected Parameter operational model;
    Temperature collect module, for when operation of air conditioner, gathering the temperature of the air-conditioning preset position;
    Output module, the fortune to be detected is exported for the temperature according to the air-conditioning preset position and the parameter operational model Row parameter;
    The outlet pressure operational model of the parameter operational model including outdoor heat exchanger, Compressor Discharge Pressure operational model and Compressor return air pressure operational model, the modeling module include:
    Statistic unit, for recording the temperature distribution state of indoor heat exchanger and outdoor heat exchanger under air-conditioning difference operating mode;
    Acquiring unit, for obtaining the preset probability interval of saturated-steam temperature according to the temperature distribution state;
    Analytic unit, for analyzing the first saturated-steam temperature of air-conditioning system indoor heat exchanger by the preset probability interval With the second saturated-steam temperature of outdoor heat exchanger;
    First modeling unit, for establishing the outlet pressure computing of the outdoor heat exchanger according to second saturated-steam temperature Model;According to the first voltage drop value between Compressor Discharge Pressure and outdoor heat exchanger saturation pressure and the second saturated vapor temperature Degree establishes the Compressor Discharge Pressure operational model;According to the second voltage drop value between indoor heat exchanger and Compressor Discharge Pressure And first saturated-steam temperature establishes the compressor return air pressure operational model.
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