CN106352635B - The progress control method and device of air-conditioning compressor - Google Patents

The progress control method and device of air-conditioning compressor Download PDF

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Publication number
CN106352635B
CN106352635B CN201610798672.0A CN201610798672A CN106352635B CN 106352635 B CN106352635 B CN 106352635B CN 201610798672 A CN201610798672 A CN 201610798672A CN 106352635 B CN106352635 B CN 106352635B
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Prior art keywords
compressor
saturation temperature
range
temperature
air
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CN106352635A (en
Inventor
孟红武
曾凡卓
李桂强
姚鸿海
谷月明
王晓红
宋鹏
袁占彪
朱新
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • F25B49/022Compressor control arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/06Damage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/027Compressor control by controlling pressure
    • F25B2600/0271Compressor control by controlling pressure the discharge pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/027Compressor control by controlling pressure
    • F25B2600/0272Compressor control by controlling pressure the suction pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/193Pressures of the compressor
    • F25B2700/1931Discharge pressures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19Pressures
    • F25B2700/193Pressures of the compressor
    • F25B2700/1933Suction pressures

Abstract

The invention discloses a kind of progress control method of air-conditioning compressor and devices, wherein this method includes:The pressure at expulsion of air-conditioning compressor exhaust outlet is obtained in real time;Determine the corresponding exhaust saturation temperature Tc of pressure at expulsion;The operation that compressor is adjusted according to exhaust saturation temperature Tc, so that the high-voltage operation process of compressor is in normal operation range.The present invention solves the problem of air-conditioner set runs in more than its own normal operation range, leads to compressor service life reduction in the prior art, improves air-conditioner set reliability of operation and further extends the service life of compressor.

Description

The progress control method and device of air-conditioning compressor
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of progress control method of air-conditioning compressor And device.
Background technology
Current most of air-conditioning products only carry out unit reliability experiment when carrying out unit development, after verification is qualified just Not in concern machine set compressor operation conditions, in the subsequent work process of unit, all may in high-voltage operation or low pressure operation The case where will appear more than its own normal operation range, reduces the reliability of compressor operating.
It is run in more than its own normal operation range for air-conditioner set in the related technology, causes compressor operating can The problem of being reduced by property, not yet proposes to efficiently solve scheme at present.
Invention content
The present invention provides a kind of progress control method of air-conditioning compressor and devices, at least to solve the prior art Middle air-conditioner set is run in more than its own normal operation range, cause compressor operating reliability reduce the problem of.
In order to solve the above technical problems, according to the one side of the embodiment of the present disclosure, the present invention provides a kind of air-conditioning systems The progress control method of system compressor, this method include:The pressure at expulsion of air-conditioning compressor exhaust outlet is obtained in real time;It determines The corresponding exhaust saturation temperature Tc of pressure at expulsion;The operation of compressor is adjusted according to exhaust saturation temperature Tc, so that compressor High-voltage operation process is in normal operation range.
Further, the operation that compressor is adjusted according to exhaust saturation temperature Tc, so that the high-voltage operation process of compressor In normal operation range, including:Obtain the corresponding range of operation figure of compressor;According to range of operation figure, the compressor is determined In the range of operation curve of busy hour;The range of operation curve of determining busy hour is fitted, determines compression The high pressure critical curve equation of machine;According to exhaust saturation temperature Tc and high pressure critical curve equation, the operation of compressor is adjusted.
Further, the high pressure critical curve equation of compressor is determined by following formula:
Tc '=alpha+beta * (T0+ γ), wherein Tc ' is high voltage protective critical-temperature, and T0 is the operation side according to air-conditioning system The temperature value that formula detects in real time, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, in air-conditioning When the method for operation of system is heating, T0 is defrost tube temperature angle value, and α, γ are the operation model in busy hour according to compressor The determining temperature parameter of the corresponding saturation temperature fitting of curve values is enclosed, β is the Slope Parameters of the high pressure critical curve of fitting.
Further, according to exhaust saturation temperature Tc and high pressure critical curve equation, the operation of compressor is adjusted, including: Step S1:The magnitude relationship of exhaust saturation temperature Tc and Tc ' is judged, if exhaust saturation temperature Tc is not more than Tc ', without adjusting Section, if exhaust saturation temperature Tc is more than Tc ', control compressor is forced to reduce the frequency of default value;Step S2:It is forcing to reduce After compressor frequency preset time threshold, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ', if exhaust saturation temperature Tc still greater than Tc ', force to reduce the frequency of default value by control compressor;Step S3:Above-mentioned steps S2 is recycled, until meeting pre- If after maintenance condition, control compressor maintains the current method of operation.
Further, until after meeting default maintenance condition, control compressor maintains the current method of operation, including:Strong After the number of system reduction compressor frequency meets predetermined threshold value number, by the minimum of the directly near compressor of the frequency of compressor When running frequency is run, alternatively, when being vented saturation temperature Tc no more than Tc ', confirms to meet and preset maintenance condition.
Further, after determining the corresponding exhaust saturation temperature Tc of pressure at expulsion, this method further includes:Tc is according to row Gas saturation temperature Tc adjusts the operation of compressor, so that the low pressure operation process of compressor is in normal operation range.
Further, the operation that compressor is adjusted according to exhaust saturation temperature Tc, so that the low pressure operation process of compressor In normal operation range, including:Obtain the corresponding range of operation figure of compressor;According to range of operation figure, the compressor is determined Range of operation curve in minimum load;Range of operation curve when by determining minimum load is fitted, and determines compression The low pressure critical curve equation of machine;According to exhaust saturation temperature Tc and low pressure critical curve equation, the operation of compressor is adjusted.
Further, the low pressure critical curve equation of compressor is determined by following formula:
Tc "=δ+ε * (T0+ η), wherein Tc " is low-voltage variation critical-temperature, and T0 is the method for operation according to air-conditioning system The temperature value detected in real time, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, in air-conditioning system When the method for operation of system is heating, T0 is defrost tube temperature angle value, and δ, η are that the range of operation according to compressor in minimum load is bent The determining temperature parameter of the corresponding saturation temperature fitting of line value, ε is the Slope Parameters of the low pressure critical curve of fitting.
Further, according to exhaust saturation temperature Tc and low pressure critical curve equation, the operation of compressor is adjusted, including: The magnitude relationship of exhaust saturation temperature Tc and Tc " is judged, if exhaust saturation temperature Tc is not less than Tc ", without action, if exhaust Saturation temperature Tc is less than Tc ", and the outer machine of control air-conditioning system continues to run with, and sends machine in prompt message to air-conditioning system;It is sending out After sending prompt message preset time threshold, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ", if exhaust saturation temperature Tc continues to send machine in prompt message to air-conditioning system still less than Tc ', until exhaust saturation temperature Tc is not less than Tc ".
According to the another aspect of the embodiment of the present disclosure, a kind of operating control device of air-conditioning compressor is provided, it should Device includes:First acquisition unit, the pressure at expulsion for obtaining air-conditioning compressor exhaust outlet in real time;First determines list Member, for determining the corresponding exhaust saturation temperature Tc of pressure at expulsion;High voltage protective unit, for according to exhaust saturation temperature Tc tune The operation for saving compressor, so that the high-voltage operation process of compressor is in normal operation range.
Further, high voltage protective unit includes:First acquisition module, for obtaining the corresponding range of operation of compressor Figure;First determining module, for according to range of operation figure, determine the compressor busy hour range of operation curve;The Two determining modules determine that the high pressure of compressor is critical for the range of operation curve of the busy hour determined to be fitted Curvilinear equation;First adjustment module adjusts the operation of compressor according to exhaust saturation temperature Tc and high pressure critical curve equation.
Further, the second determining module determines the high pressure critical curve equation of compressor by following formula:
Tc '=alpha+beta * (T0+ γ), wherein Tc ' is high voltage protective critical-temperature, and T0 is the operation side according to air-conditioning system The temperature value that formula detects in real time, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, in air-conditioning When the method for operation of system is heating, T0 is defrost tube temperature angle value, and α, γ are the operation model in busy hour according to compressor The determining temperature parameter of the corresponding saturation temperature fitting of curve values is enclosed, β is the Slope Parameters of the high pressure critical curve of fitting.
Further, the first adjustment module adjusts the operation of compressor according to following steps:Step S1:Judge exhaust saturation The magnitude relationship of temperature Tc and Tc ', if exhaust saturation temperature Tc is not more than Tc ', without adjusting, if exhaust saturation temperature Tc is big In Tc ', control compressor is forced to reduce the frequency of default value;Step S2:It is forcing to reduce compressor frequency preset time threshold After value, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ', if exhaust saturation temperature Tc is still greater than Tc ', control compression Machine is forced to reduce the frequency of default value;Step S3:Above-mentioned steps S2 is recycled, until after meeting default maintenance condition, control pressure Contracting machine maintains the current method of operation.
Further, the first adjustment module, will after forcing the number for reducing compressor frequency to meet predetermined threshold value number When the minimum running frequency of the directly near compressor of the frequency of compressor is run, alternatively, being vented saturation temperature Tc not When more than Tc ', confirms to meet and preset maintenance condition.
Further, which further includes:Tc low-voltage variation units, for adjusting compressor according to exhaust saturation temperature Tc Operation so that the low pressure operation process of compressor is in normal operation range.
Further, low-voltage variation unit includes:Second acquisition module, for obtaining the corresponding range of operation of compressor Figure;Third determining module, for according to range of operation figure, determining range of operation curve of the compressor in minimum load;The Four determining modules, range of operation curve when minimum load for will determine are fitted, and determine that the low pressure of compressor is critical Curvilinear equation;Second adjustment module, for according to exhaust saturation temperature Tc and low pressure critical curve equation, adjusting the fortune of compressor Row.
Further, the second adjustment module determines the low pressure critical curve equation of compressor by following formula:Tc "=δ+ ε * (T0+ η), wherein Tc " is low-voltage variation critical-temperature, and T0 is the temperature detected in real time according to the method for operation of air-conditioning system Angle value, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, is in the method for operation of air-conditioning system When heating, T0 is defrost tube temperature angle value, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load The temperature parameter that temperature foh determines, ε are the Slope Parameters of the low pressure critical curve of fitting.
Further, the second adjustment module includes:First submodule is vented the big of saturation temperature Tc and Tc " for judging Small relationship controls air-conditioning without action if exhaust saturation temperature Tc is not less than Tc " if exhaust saturation temperature Tc is less than Tc " The outer machine of system continues to run with, and sends machine in prompt message to air-conditioning system;The second submodule, for pre- in transmission prompt message If after time threshold, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ", if exhaust saturation temperature Tc still less than Tc ', Continue to send machine in prompt message to air-conditioning system, until exhaust saturation temperature Tc is not less than Tc ".
In the present invention, it is not just at and carries out unit reliability experiment when carrying out unit development, just do not exist after verification is qualified Machine set compressor operation conditions is paid close attention to, but during operation of air conditioner, equally machine set compressor operation conditions is detected, The pressure for obtaining exhaust outlet of compressor in real time during operation of air conditioner is determined and is obtained in conjunction with the property parameters of compressor of air conditioner The corresponding saturation temperature of pressure value air-conditioner set reliability operation is judged using the saturation temperature as judgement basis, When air-conditioner set is run in more than its own normal operation range, control is adjusted.Effective solution of the present invention is existing There is the problem of air-conditioner set runs in more than its own normal operation range, leads to compressor service life reduction in technology, improves Air-conditioner set reliability of operation further extends the service life of compressor.
Description of the drawings
Fig. 1 is a kind of optional flow of the progress control method of air-conditioning compressor according to the ... of the embodiment of the present invention Figure;
Fig. 2 be air-conditioning compressor according to the ... of the embodiment of the present invention progress control method in corresponding air-conditioning system show It is intended to;
Fig. 3 be air-conditioning compressor according to the ... of the embodiment of the present invention progress control method in a kind of compressor operating model Enclose figure;
Fig. 4 is a kind of optional structural frames of the operating control device of air-conditioning compressor according to the ... of the embodiment of the present invention Figure;And
Fig. 5 is a kind of another optional structure of the operating control device of air-conditioning compressor according to the ... of the embodiment of the present invention Block diagram.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Embodiment 1
The progress control method of air-conditioning compressor provided by the invention is illustrated below in conjunction with the accompanying drawings.
The progress control method of air-conditioning compressor provided by the invention can be applied in domestic air conditioner, can also Applied to the air-conditioning system of other environment, such as:The environment such as market, naval vessel can be corresponded to by being written in air-conditioning system mainboard Program realize that in some embodiments it is possible to realized by way of install software, Fig. 1 shows air-conditioning of the invention A kind of optional flow chart of the progress control method of system compressors, as shown in Figure 1, this method may comprise steps of:
S102 obtains the pressure at expulsion of air-conditioning compressor exhaust outlet in real time;
S104 determines the corresponding exhaust saturation temperature of pressure at expulsion;
S106 adjusts the operation of compressor according to exhaust saturation temperature, so that the high-voltage operation process of compressor is in just Normal range of operation.
In the above embodiment provided by the invention, it is not just at when carrying out unit development and carries out unit reliability reality It tests, just not in concern machine set compressor operation conditions after verification is qualified, but during operation of air conditioner, equally unit is compressed Machine operation conditions is detected, and the pressure of exhaust outlet of compressor is obtained in real time during operation of air conditioner, in conjunction with compressor of air conditioner Property parameters, determine obtain the corresponding saturation temperature of pressure value, using the saturation temperature as judgement basis, to air-conditioner set Reliability operation is judged, when air-conditioner set is run in more than its own normal operation range, control is adjusted.This Air-conditioner set is run in more than its own normal operation range invention effective solution in the prior art, leads to the compressor longevity The problem of life reduces improves air-conditioner set reliability of operation and further extends the service life of compressor.
Below in conjunction with the accompanying drawings 2 and attached drawing 3, the implementation of the present embodiment is specifically described, to be better understood from this hair Bright embodiment.
Fig. 2 shows a kind of corresponding optional air-conditioning system structure chart of the progress control method of this air-conditioning compressor, As shown in Fig. 2, the system includes:Compressor, exhaust temperature sensing package, high pressure sensor, high-voltage switch gear, four-way valve, finned heat exchanger, Environment temperature sensing package, defrost temperature sensing package, filter, electric expansion valve, plate heat exchanger, vapour liquid separator, air-breathing temperature sensing package, etc. portions Point, for details, reference can be made to the relationships of serial number and title shown in table one:
Serial number Title Serial number Title
1 Compressor 8 Defrost temperature sensing package
2 It is vented temperature sensing package 9 Filter
3 High pressure sensor 10 Electric expansion valve
4 High-voltage switch gear 11 Plate heat exchanger
5 Four-way valve 12 Vapour liquid separator
6 Finned heat exchanger 13 Air-breathing temperature sensing package
7 Environment temperature sensing package 14 Refrigerant liquid pipe temperature sensing package
15 Refrigerant tracheae temperature sensing package
Table one
During specific implementation, in the operation for adjusting compressor according to exhaust saturation temperature Tc, so that the high pressure of compressor When operational process is in normal operation range, the corresponding range of operation figure of compressor is obtained;According to range of operation figure, the pressure is determined Range of operation curve of the contracting machine in busy hour;The range of operation curve of determining busy hour is fitted, is determined The high pressure critical curve equation of compressor;According to exhaust saturation temperature Tc and high pressure critical curve equation, the fortune of compressor is adjusted Row.
Wherein, Fig. 3 shows a kind of compressor operating areal map of characterization compressor operating attribute, as shown in Figure 3, horizontal seat Suction pressure of compressor Ps [MPa] is indicated, ordinate shows Compressor Discharge Pressure Pd [MPa], different operating is shown in figure High pressure ratio area and low-pressure ratio area are shown schematically in range of operation and dotted line under frequency.
Preferably, the high pressure critical curve equation of compressor is determined by following formula:Tc '=alpha+beta * (T0+ γ), In, Tc ' is high voltage protective critical-temperature, and T0 is the temperature value detected in real time according to the method for operation of air-conditioning system, in air-conditioning When the method for operation of system is refrigeration, T0 is heat exchange manifold temperature value, and when the method for operation of air-conditioning system is heating, T0 is Defrost tube temperature angle value, α, γ are that the corresponding saturation temperature of range of operation curve values according to compressor in busy hour is fitted really Fixed temperature parameter, β are the Slope Parameters of the high pressure critical curve of fitting.
In addition, according to exhaust saturation temperature Tc and high pressure critical curve equation, when adjusting the operation of compressor, can adopt With following steps S1-S3:
Step S1:Judge the magnitude relationship of exhaust saturation temperature Tc and Tc ';If being vented saturation temperature Tc is not more than Tc ', no It is adjusted, if exhaust saturation temperature Tc is more than Tc ', control compressor is forced to reduce the frequency of default value;
Step S2:After forcing to reduce compressor frequency preset time threshold, continue to judge exhaust saturation temperature Tc and Tc ' Magnitude relationship;If being vented saturation temperature Tc still greater than Tc ', control compressor is forced to reduce the frequency of default value;
Step S3:Above-mentioned steps S2 is recycled, until after meeting default maintenance condition, control compressor maintains current operation side Formula.
Preferably, after forcing the number for reducing compressor frequency to meet predetermined threshold value number, the frequency of compressor is straight When connecing the minimum running frequency of the near compressor and being run, alternatively, when being vented saturation temperature Tc and being not more than Tc ', confirm Meet above-mentioned described default maintenance condition.
The above embodiment is mainly the protection to operation of air conditioner high-pressure section, in an optional embodiment, also The control method of the protection to operation of air conditioner low-pressure section is provided, specifically, on the basis of the above embodiment, the control Method processed further includes:Tc adjusts the operation of compressor according to exhaust saturation temperature Tc, so that at the low pressure operation process of compressor In normal operation range.
During specific implementation, in the operation for adjusting compressor according to exhaust saturation temperature Tc, so that the low pressure of compressor When operational process is in normal operation range, the corresponding range of operation figure of compressor is obtained;According to range of operation figure, the pressure is determined Range of operation curve of the contracting machine in minimum load;Range of operation curve when by determining minimum load is fitted, and is determined The low pressure critical curve equation of compressor;According to exhaust saturation temperature Tc and low pressure critical curve equation, the fortune of compressor is adjusted Row.
Wherein, compressor operating areal map still can be found in shown in Fig. 3, and abscissa shows suction pressure of compressor Ps [MPa], ordinate show Compressor Discharge Pressure Pd [MPa], the range of operation under different operating frequency, Yi Jixu are shown in figure High pressure ratio area and low-pressure ratio area are shown schematically in line.
Preferably, the low pressure critical curve equation of compressor is determined by following formula:
Tc "=δ+ε * (T0+ η), wherein Tc " is low-voltage variation critical-temperature, and T0 is the method for operation according to air-conditioning system The temperature value detected in real time, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, in air-conditioning system When the method for operation of system is heating, T0 is defrost tube temperature angle value, and δ, η are that the range of operation according to compressor in minimum load is bent The determining temperature parameter of the corresponding saturation temperature fitting of line value, ε is the Slope Parameters of the low pressure critical curve of fitting.
In addition, according to exhaust saturation temperature Tc and low pressure critical curve equation, when adjusting the operation of compressor, row is first judged The magnitude relationship of gas saturation temperature Tc and Tc ", if exhaust saturation temperature Tc is not less than Tc ", without action, if exhaust saturation temperature It spends Tc and is less than Tc ", the outer machine of control air-conditioning system continues to run with, and sends machine in prompt message to air-conditioning system;Then, it is sending After prompt message preset time threshold, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ", if exhaust saturation temperature Tc Still less than Tc ', continue to send machine in prompt message to air-conditioning system, until exhaust saturation temperature Tc is not less than Tc ".
The above method is described further with reference to air-conditioning system shown in Fig. 2 and specific example:
Air-conditioning system shown in Figure 2, unit in the process of running, the temperature and pressure value that unit detects in real time, specifically For, pressure at expulsion P is obtained by high pressure sensor 3Exhaust, delivery temperature T is obtained by being vented temperature sensing packageExhaust, felt by being vented Thermometer bulb 2 obtains delivery temperature TExhaust, defrost tube temperature degree T is obtained by defrost temperature sensing package 8Defrost
After obtaining above-mentioned parameter, the present invention can be divided into three parts progress:
1. calculating the corresponding saturation temperature of pressure:
The process can learn pressure at expulsion P by looking into saturation pressure-temperature parameter tableExhaustCorresponding saturation temperature Degree.
2. high pressure ratio is protected:
The process mainly carries out comparison meter by monitoring the exhaust saturation temperature of unit and the maximal pressure of setting in real time than line It calculates.
Specifically, according to the range of operation figure of machine set compressor, find machine set compressor peak load range of operation Curve obtains the high pressure critical curve equation of compressor by the fitting to pressure curve.
Wherein, maximal pressure can be than line formula:Tc '=alpha+beta * (T0+ γ)
Wherein, refrigeration mode T0 is that plate changes liquid pipe temperature;Heating mode T0 is defrost tube temperature degree, and α, γ are according to compressor In the determining temperature parameter of the corresponding saturation temperature fitting of the range of operation curve values of busy hour, β is that the high pressure of fitting is faced Boundary's slope of a curve parameter.
When detecting exhaust saturation temperature Tc more than Tc ', then compressor pressure reduces a Hz, maintains ts to detect again, if still So there is Tc to be more than Tc ', then reduce b Hz again, is detected again after maintaining ts, if still detecting, Tc is more than Tc ', then reduces c Hz, It is detected again after maintaining ts, if still there is Tc to be more than Tc ', is directly reduced to minimum frequency, is detected again after maintaining ts;In frequency reducing Cheng Zhong is run if having been reduced to low-limit frequency by low-limit frequency;Whenever, it detects that Tc is less than or equal to Tc ', exits height Pressure ratio is protected, by healthy compressor adjusting control.
3. low-pressure ratio is protected:
The process mainly carries out comparison meter by monitoring the exhaust saturation temperature of unit and the minimal pressure of setting in real time than line It calculates.
According to the range of operation curve of compressor, the range of operation for finding machine set compressor compressor in minimum load is bent Line obtains the low pressure critical curve equation of compressor by the fitting to pressure curve.
Wherein, minimal pressure can be than line formula:Wherein, refrigeration mode T0 is that plate changes liquid pipe temperature to Tc "=δ+ε * (T0+ η); Heating mode T0 is defrost tube temperature degree, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load The temperature parameter that temperature foh determines, ε are the Slope Parameters of the low pressure critical curve of fitting.
When detecting that Tc is less than Tc ", then sends out protection reason and be given to interior machine, outer machine continues to run with, without any changes, per Ts After detect, such as also Tc is less than Tc ", then protects reason to interior machine after supervention;If Tc is more than or equal to Tc ", then hair protection is not required to Reason, normal regulating.
Judge compressor whether just by detecting the corresponding saturation temperature of high pressure of unit in real time in above-described embodiment In normal range of operation, over range operation is adjusted in time, compressor is protected, extends the service life of compressor.
Embodiment 2
Based on the progress control method of the air-conditioning compressor provided in above-described embodiment 1, the present invention is optionally implemented Example 2 additionally provides a kind of operating control device of air-conditioning compressor, and specifically, Fig. 4 shows that one kind of the device is optional Structure diagram, as shown in figure 4, the device includes:First acquisition unit 42, for obtaining air-conditioning compressor exhaust in real time The pressure at expulsion of mouth;First determination unit 44, for determining the corresponding exhaust saturation temperature Tc of pressure at expulsion;High voltage protective unit 46, the operation for adjusting compressor according to exhaust saturation temperature Tc, so that the high-voltage operation process of compressor is in normal fortune Line range.
Further, high voltage protective unit includes:First acquisition module, for obtaining the corresponding range of operation of compressor Figure;First determining module, for according to range of operation figure, determine the compressor busy hour range of operation curve;The Two determining modules determine that the high pressure of compressor is critical for the range of operation curve of the busy hour determined to be fitted Curvilinear equation;First adjustment module adjusts the operation of compressor according to exhaust saturation temperature Tc and high pressure critical curve equation.
Further, the second determining module determines the high pressure critical curve equation of compressor by following formula:
Tc '=alpha+beta * (T0+ γ), wherein Tc ' is high voltage protective critical-temperature, and T0 is the operation side according to air-conditioning system The temperature value that formula detects in real time, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, in air-conditioning When the method for operation of system is heating, T0 is defrost tube temperature angle value, and α, γ are the operation model in busy hour according to compressor The determining temperature parameter of the corresponding saturation temperature fitting of curve values is enclosed, β is the Slope Parameters of the high pressure critical curve of fitting.
Further, the first adjustment module adjusts the operation of compressor according to following steps:Step S1:Judge exhaust saturation The magnitude relationship of temperature Tc and Tc ', if exhaust saturation temperature Tc is not more than Tc ', without adjusting, if exhaust saturation temperature Tc is big In Tc ', control compressor is forced to reduce the frequency of default value;Step S2:It is forcing to reduce compressor frequency preset time threshold After value, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ', if exhaust saturation temperature Tc is still greater than Tc ', control compression Machine is forced to reduce the frequency of default value;Step S3:Above-mentioned steps S2 is recycled, until after meeting default maintenance condition, control pressure Contracting machine maintains the current method of operation.
Further, the first adjustment module, will after forcing the number for reducing compressor frequency to meet predetermined threshold value number When the minimum running frequency of the directly near compressor of the frequency of compressor is run, alternatively, being vented saturation temperature Tc not When more than Tc ', confirms to meet and preset maintenance condition.
Further, as shown in figure 5, the device further includes:Low-voltage variation unit 52, for according to exhaust saturation temperature Tc The operation for adjusting compressor, so that the low pressure operation process of compressor is in normal operation range.
Further, low-voltage variation unit includes:Second acquisition module, for obtaining the corresponding range of operation of compressor Figure;Third determining module, for according to range of operation figure, determining range of operation curve of the compressor in minimum load;The Four determining modules, range of operation curve when minimum load for will determine are fitted, and determine that the low pressure of compressor is critical Curvilinear equation;Second adjustment module, for according to exhaust saturation temperature Tc and low pressure critical curve equation, adjusting the fortune of compressor Row.
Further, the second adjustment module determines the low pressure critical curve equation of compressor by following formula:Tc "=δ+ ε * (T0+ η), wherein Tc " is low-voltage variation critical-temperature, and T0 is the temperature detected in real time according to the method for operation of air-conditioning system Angle value, when the method for operation of air-conditioning system is refrigeration, T0 is heat exchange manifold temperature value, is in the method for operation of air-conditioning system When heating, T0 is defrost tube temperature angle value, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load The temperature parameter that temperature foh determines, ε are the Slope Parameters of the low pressure critical curve of fitting.
Further, the second adjustment module includes:First submodule is vented the big of saturation temperature Tc and Tc " for judging Small relationship controls air-conditioning without action if exhaust saturation temperature Tc is not less than Tc " if exhaust saturation temperature Tc is less than Tc " The outer machine of system continues to run with, and sends machine in prompt message to air-conditioning system;The second submodule, for pre- in transmission prompt message If after time threshold, continue the magnitude relationship for judging exhaust saturation temperature Tc and Tc ", if exhaust saturation temperature Tc still less than Tc ', Continue to send machine in prompt message to air-conditioning system, until exhaust saturation temperature Tc is not less than Tc ".
About the device in above-described embodiment, wherein each unit, module executes the concrete mode of operation related It is described in detail in the embodiment of this method, explanation will be not set forth in detail herein.
It can be seen from the foregoing description that in an embodiment of the present invention, being not just at and carrying out carrying out machine when unit development Group failtests, just not in concern machine set compressor operation conditions after verification is qualified, but during operation of air conditioner, equally Machine set compressor operation conditions is detected, obtains the pressure of exhaust outlet of compressor in real time during operation of air conditioner, in conjunction with The property parameters of compressor of air conditioner determine the corresponding saturation temperature of pressure value obtained, using the saturation temperature as judgement basis, Air-conditioner set reliability operation is judged, when air-conditioner set is run in more than its own normal operation range, is carried out Adjusting control.Air-conditioner set is run in more than its own normal operation range effective solution of the present invention in the prior art, The problem of leading to compressor service life reduction, improves air-conditioner set reliability of operation, and further, extend compressor uses the longevity Life.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the present invention Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or Person's adaptive change follows the general principle of the present invention and includes the common knowledge in the art that the present invention does not invent Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.

Claims (10)

1. a kind of progress control method of air-conditioning compressor, which is characterized in that including:
The pressure at expulsion of air-conditioning compressor exhaust outlet is obtained in real time;
Determine the corresponding exhaust saturation temperature Tc of the pressure at expulsion;
The operation that the compressor is adjusted according to the exhaust saturation temperature Tc, so that at the high-voltage operation process of the compressor In normal operation range;
The operation that the compressor is adjusted according to the exhaust saturation temperature Tc, so that the high-voltage operation mistake of the compressor Journey is in normal operation range, including:
Obtain the corresponding range of operation figure of the compressor;
According to the range of operation figure, determine the compressor busy hour range of operation curve;
The range of operation curve of determining busy hour is fitted, determines the high pressure critical curve side of the compressor Journey;
According to the exhaust saturation temperature Tc and the high pressure critical curve equation, the operation of the compressor is adjusted.
2. according to the method described in claim 1, it is characterized in that, determining that the high pressure of the compressor is critical by following formula Curvilinear equation:
Tc '=alpha+beta * (T0+ γ),
Wherein, Tc ' is high voltage protective critical-temperature, and T0 is the temperature detected in real time according to the method for operation of the air-conditioning system Value, when the method for operation of the air-conditioning system is refrigeration, the T0 is heat exchange manifold temperature value, in the air-conditioning system When the method for operation is heating, the T0 is defrost tube temperature angle value, and α, γ are the range of operation in busy hour according to compressor The determining temperature parameter of the corresponding saturation temperature fitting of curve values, β is the Slope Parameters of the high pressure critical curve of fitting.
3. according to the method described in claim 2, it is characterized in that, described according to the exhaust saturation temperature Tc and the high pressure Critical curve equation adjusts the operation of the compressor, including:
Step S1:The magnitude relationship of exhaust the saturation temperature Tc and the Tc ' are judged, if exhaust saturation temperature Tc is not more than institute Tc ' is stated, without adjusting, if the exhaust saturation temperature Tc is more than the Tc ', the compressor is controlled and forces to reduce present count The frequency of value;
Step S2:After forcing to reduce compressor frequency preset time threshold, continue to judge the exhaust saturation temperature Tc and institute The magnitude relationship of Tc ' is stated, if the exhaust saturation temperature Tc controls the compressor and force reduction default still greater than the Tc ' The frequency of numerical value;
Step S3:Above-mentioned steps S2 is recycled, until after meeting default maintenance condition, control compressor maintains the current method of operation.
4. according to the method described in claim 3, it is characterized in that, described until after the default maintenance condition of satisfaction, control is compressed Machine maintains the current method of operation, including:
Force reduce compressor frequency number meet predetermined threshold value number after, by the frequency of the compressor directly it is near should When the minimum running frequency of compressor is run, alternatively, when the exhaust saturation temperature Tc is not more than the Tc ', confirm Meet the default maintenance condition.
5. according to the method described in claim 1, it is characterized in that, in the corresponding exhaust saturation of the determination pressure at expulsion After temperature Tc, further include:
Tc adjusts the operation of the compressor according to the exhaust saturation temperature Tc, so that the low pressure operation process of the compressor In normal operation range.
6. according to the method described in claim 1, it is characterized in that, described adjust the pressure according to the exhaust saturation temperature Tc The operation of contracting machine, so that the low pressure operation process of the compressor is in normal operation range, including:
Obtain the corresponding range of operation figure of the compressor;
According to the range of operation figure, range of operation curve of the compressor in minimum load is determined;
Range of operation curve when by determining minimum load is fitted, and determines the low pressure critical curve side of the compressor Journey;
According to the exhaust saturation temperature Tc and the low pressure critical curve equation, the operation of the compressor is adjusted.
7. according to the method described in claim 6, it is characterized in that, determining that the low pressure of the compressor is critical by following formula Curvilinear equation:
Tc "=δ+ε * (T0+ η),
Wherein, Tc " is low-voltage variation critical-temperature, and T0 is the temperature detected in real time according to the method for operation of the air-conditioning system Value, when the method for operation of the air-conditioning system is refrigeration, the T0 is heat exchange manifold temperature value, in the air-conditioning system When the method for operation is heating, the T0 is defrost tube temperature angle value, and δ, η are that the range of operation according to compressor in minimum load is bent The determining temperature parameter of the corresponding saturation temperature fitting of line value, ε is the Slope Parameters of the low pressure critical curve of fitting.
8. the method according to the description of claim 7 is characterized in that described according to the exhaust saturation temperature Tc and the low pressure Critical curve equation adjusts the operation of the compressor, including:
The magnitude relationship for judging exhaust the saturation temperature Tc and the Tc ", if the exhaust saturation temperature Tc is not less than described Tc ", without action, if the exhaust saturation temperature Tc is less than the Tc ", the outer machine of control air-conditioning system continues to run with, concurrently Send machine in prompt message to air-conditioning system;
After sending prompt message preset time threshold, continue to judge that the size of the exhaust saturation temperature Tc and Tc " is closed System, if the exhaust saturation temperature Tc still less than the Tc ', continues to send machine in prompt message to air-conditioning system, until described It is vented saturation temperature Tc and is not less than the Tc ".
9. a kind of operating control device of air-conditioning compressor, which is characterized in that including:
First acquisition unit, the pressure at expulsion for obtaining air-conditioning compressor exhaust outlet in real time;
First determination unit, for determining the corresponding exhaust saturation temperature Tc of the pressure at expulsion;
High voltage protective unit, the operation for adjusting the compressor according to the exhaust saturation temperature Tc, so that the compression The high-voltage operation process of machine is in normal operation range;
High voltage protective unit includes:First acquisition module, for obtaining the corresponding range of operation figure of compressor;First determines mould Block, for according to range of operation figure, determine the compressor busy hour range of operation curve;Second determining module is used It is fitted in by the range of operation curve of the busy hour determined, determines the high pressure critical curve equation of compressor;First Adjustment module adjusts the operation of compressor according to exhaust saturation temperature Tc and high pressure critical curve equation.
10. device according to claim 9, which is characterized in that further include:
Tc low-voltage variation units, the operation for adjusting the compressor according to the exhaust saturation temperature Tc, so that the pressure The low pressure operation process of contracting machine is in normal operation range.
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CN108317073B (en) * 2018-01-12 2019-10-11 特灵空调系统(中国)有限公司 The control method and its control device of compressor, compressor
CN108278713B (en) * 2018-01-19 2021-04-09 珠海格力电器股份有限公司 Pressure control method and device
CN109236625B (en) * 2018-08-30 2020-10-23 珠海格力电器股份有限公司 Compressor control method and device and electrical equipment
CN109406042B (en) * 2018-10-24 2021-02-09 四川长虹空调有限公司 Pressure data fitting method for variable frequency air conditioner
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