CN107238180A - The air quantity control method and system of cooling by wind - Google Patents
The air quantity control method and system of cooling by wind Download PDFInfo
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- CN107238180A CN107238180A CN201710484400.8A CN201710484400A CN107238180A CN 107238180 A CN107238180 A CN 107238180A CN 201710484400 A CN201710484400 A CN 201710484400A CN 107238180 A CN107238180 A CN 107238180A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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Abstract
The invention discloses a kind of air quantity control method of cooling by wind and system.Control method includes：Environment temperature, the vaporous parameter of the evaporator operation of cooling by wind or the air-breathing parameter and compressor classical insulation of compressor run according to cooling by wind, determine the target exhaust pressure ratio of compressor；The target exhaust pressure ratio of the actual exhaust air pressure ratio of the compressor of cooling by wind and the compressor of cooling by wind is compared in real time；Adjust the air quantity of the blower fan of the condenser side of cooling by wind in real time according to comparison result.Compressor operating performance parameter is introduced to characterize the running status that whole cooling by wind is actual, the demand of refrigerant displacement and the condensing pressure of cooling by wind and the pressure difference of evaporating pressure for the air quantity of blower fan of compressor is considered simultaneously, adjust the air quantity of the blower fan of condenser side in real time according to both comparison results, the Energy Efficiency Ratio for enabling cooling by wind to be optimal.
Description
Technical field
The present invention relates to wind-cooled cold-water machine technical group field, more particularly to a kind of air quantity control method of cooling by wind
And system.
Background technology
Air-cooled liquid chillers are a kind of major refrigeration equipment of air-conditioning system, generally include compressor, condenser, evaporation
Device, cooling blower and expansion valve, cooling blower are cooled down to condenser, and the refrigerant in evaporator is operationally carried out
Heat absorption, so as to provide low-temperature receiver for air-conditioning system.
In current cooling by wind, air-blower control is using control exhaust and the side of differencial pressure suction or condensing pressure
Under part load condition, easily there is fan operation and compressor operating shape in formula, control fan operating numbers and rotating speed, operation
State can not be matched, and cause compressor operating to be reduced in sub-load, but blower fan standard-sized sheet, or fan operation quantity, compressor fortune
Row in higher load, case above easily occur blower fan frequently regulation or start and stop, long-play can cause blower fan damage and
Efficiency is reduced.Performance can not be played more preferably during unit sub-load, and the efficiency of unit can not reach optimum state.
The content of the invention
There is provided a kind of air quantity control method of cooling by wind, the wind for first aspect according to embodiments of the present invention
Cold handpiece Water Chilling Units include compressor, the condenser and evaporator that are connected with the compressor and are arranged at the condenser side
For the blower fan cooled down to the condenser, the control method includes：
Environment temperature, the vaporous parameter of the evaporator operation of cooling by wind or the pressure run according to cooling by wind
The air-breathing parameter of contracting machine and the compressor classical insulation of cooling by wind, determine the compressor of cooling by wind
Target exhaust pressure ratio；
The actual exhaust air pressure ratio of the compressor of cooling by wind and the target of the compressor of cooling by wind are arranged
Atmospheric pressure ratio is compared in real time；
Adjust the air quantity of the blower fan of the condenser side of cooling by wind in real time according to comparison result.
Cooling by wind of the present invention air quantity control method further improvement is that, the compressor electric property ginseng
Number includes percentage of current, compressor horsepower percentage or the compressor horsepower of compressor operating.
Cooling by wind of the present invention air quantity control method further improvement is that, the compressor electric property ginseng
Number is the percentage of current of compressor operating, and the cooling by wind includes at least one refrigerating circuit, the control method
Also include：
The actual motion current value of compressor in the refrigerating circuit is with the compressor in the refrigerating circuit
The ratio size of the maximum current value of middle permission, determines the percentage of current of the compressor operating of cooling by wind.
Cooling by wind of the present invention air quantity control method further improvement is that, the refrigerating circuit includes many
Individual compressor, according to the actual motion current value sum of each compressor in the refrigerating circuit and each compressor in the system
The ratio size of the maximum current value sum allowed in cold loop, determines the compressor fortune of each refrigerating circuit of cooling by wind
Capable percentage of current.
Cooling by wind of the present invention air quantity control method further improvement is that, adjusted in real time according to comparison result
The air quantity of the blower fan of the condenser side of cooling by wind, including：
The actual exhaust air pressure ratio of compressor of cooling by wind is compared out more than the compressor of cooling by wind
Target exhaust pressure ratio, increases the air quantity of the blower fan of the condenser side of cooling by wind, makes the compressor of cooling by wind
Actual exhaust air pressure ratio meet cooling by wind compressor target exhaust pressure ratio；
The actual exhaust air pressure ratio of compressor of cooling by wind is compared out less than the compressor of cooling by wind
Target exhaust pressure ratio, reduces the air quantity of the blower fan of the condenser side of cooling by wind, makes the compressor of cooling by wind
Actual exhaust air pressure ratio meet cooling by wind compressor target exhaust pressure ratio.
Cooling by wind of the present invention air quantity control method further improvement is that, adjusted in real time according to comparison result
The air quantity of the blower fan of the condenser side of cooling by wind, including：
Compare out the mesh of the actual exhaust air pressure ratio of the compressor of cooling by wind and the compressor of cooling by wind
Difference range of the difference beyond setting of exhaust pressure ratio is marked, the air quantity of the blower fan of the condenser side of cooling by wind is adjusted,
Make the target exhaust pressure ratio of the actual exhaust air pressure ratio of the compressor of cooling by wind and the compressor of cooling by wind
Difference meet the difference range of setting.
Cooling by wind of the present invention air quantity control method further improvement is that, the vaporous parameter includes evaporation
Temperature or evaporating pressure；The air-breathing parameter includes saturated suction temperature or pressure of inspiration(Pi).
There is provided a kind of air quantity control system of cooling by wind, the wind for second aspect according to embodiments of the present invention
Cold handpiece Water Chilling Units include compressor, the condenser and evaporator that are connected with the compressor and are arranged at the condenser side
For the blower fan cooled down to the condenser, the control system includes：
Environment temperature detection module, is configured as detecting the environment temperature of cooling by wind operation；
Parameter detection module, is configured as detecting the vaporous parameter or compressor of the evaporator operation of cooling by wind
Air-breathing parameter；
Classical insulation determining module, is configured to determine that the compressor classical insulation of cooling by wind；
Exhaust pressure ratio determining module, with the environment temperature detection module, the parameter detection module and the electricity
Gas performance parameter determining module is connected, and is configured as the cooling by wind operation detected according to the environment temperature detection module
Environment temperature, the vaporous parameter or compressor of the evaporator operation of the cooling by wind of parameter detection module detection
The compressor classical insulation for the cooling by wind that air-breathing parameter and the classical insulation determining module are determined, really
Determine the target exhaust pressure ratio of the compressor of cooling by wind；
Comparing module, is connected with the exhaust pressure ratio determining module, is configured as the exhaust pressure ratio determining mould
The target exhaust of the actual exhaust air pressure ratio of the compressor for the cooling by wind that block is determined and the compressor of cooling by wind
Pressure ratio is compared in real time；
Adjustment module, is connected with the comparing module, is configured as being adjusted in real time according to the comparison result of the comparing module
Save the air quantity of the blower fan of the condenser side of cooling by wind.
Cooling by wind of the present invention air quantity control system further improvement is that, the compressor electric property ginseng
Number includes percentage of current, compressor horsepower percentage or the compressor horsepower of compressor operating.
Cooling by wind of the present invention air quantity control system further improvement is that, the compressor electric property ginseng
Number is the percentage of current of compressor operating, and the cooling by wind includes at least one refrigerating circuit, the electric property
Parameter determination module is configured to the actual motion current value and the pressure of the compressor in the refrigerating circuit
The ratio size for the maximum current value that contracting machine allows in the refrigerating circuit, determines the compressor operating of cooling by wind
Percentage of current.
Cooling by wind of the present invention air quantity control system further improvement is that, the refrigerating circuit includes many
Individual compressor, the classical insulation determining module is configured to according to each compressor in the refrigerating circuit
The ratio size for the maximum current value sum that actual motion current value sum allows with each compressor in the refrigerating circuit,
Determine the percentage of current of the compressor operating of each refrigerating circuit of cooling by wind.
Cooling by wind of the present invention air quantity control system further improvement is that, the adjustment module further by
It is configured to：
When the actual exhaust air pressure ratio that the comparison module goes out the compressor of cooling by wind is more than wind-cooled cold-water
The target exhaust pressure ratio of the compressor of unit, increases the air quantity of the blower fan of the condenser side of cooling by wind, makes air-cooled cold
The actual exhaust air pressure ratio of the compressor of water dispenser group meets the target exhaust pressure ratio of the compressor of cooling by wind；
When the actual exhaust air pressure ratio that the comparison module goes out the compressor of cooling by wind is less than wind-cooled cold-water
The target exhaust pressure ratio of the compressor of unit, reduces the air quantity of the blower fan of the condenser side of cooling by wind, makes air-cooled cold
The actual exhaust air pressure ratio of the compressor of water dispenser group meets the target exhaust pressure ratio of the compressor of cooling by wind.
Cooling by wind of the present invention air quantity control system further improvement is that, the adjustment module further by
It is configured to：
When the comparison module goes out the actual exhaust air pressure ratio and wind-cooled cold-water machine of the compressor of cooling by wind
The difference of the target exhaust pressure ratio of the compressor of group adjusts the condenser side of cooling by wind beyond the difference range of setting
Blower fan air quantity, make the mesh of the actual exhaust air pressure ratio of the compressor of cooling by wind and the compressor of cooling by wind
The difference of mark exhaust pressure ratio meets the difference range of setting.
Cooling by wind of the present invention air quantity control system further improvement is that, the vaporous parameter includes evaporation
Temperature or evaporating pressure；The air-breathing parameter includes saturated suction temperature or pressure of inspiration(Pi).
The technical scheme that embodiments of the invention are provided can include the following benefits：
The present invention characterizes the actual running status of whole cooling by wind by introducing compressor classical insulation,
Compressor classical insulation can as cooling by wind actual load and operating condition sign, simplify control it is defeated
Enter, at the same consider the refrigerant displacement and the condensing pressure of cooling by wind and the pressure difference of evaporating pressure of compressor for
The demand of the air quantity of blower fan, and the two coupling factors are united two into one, condensation is adjusted according to both comparison results in real time
The air quantity of the blower fan of device side, the Energy Efficiency Ratio for enabling cooling by wind to be optimal is in optimal working condition all the time.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Fig. 1 is the structural representation of the cooling by wind shown in an exemplary embodiment of the invention；
Fig. 2 is the flow chart of the air quantity control method of the cooling by wind shown in an exemplary embodiment of the invention；
Fig. 3 is the refinement flow of the air quantity control method of the cooling by wind shown in an exemplary embodiment of the invention
Figure；
Fig. 4 is the structured flowchart of the air quantity control system of the cooling by wind shown in an exemplary embodiment of the invention.
Embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally
Conversion is all contained in protection scope of the present invention.
It is the purpose only merely for description specific embodiment in terminology used in the present invention, and is not intended to be limiting the present invention.
" one kind ", " described " and "the" of singulative used in the present invention and appended claims are also intended to including majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wrapped
It may be combined containing one or more associated any or all of project listed.
Below in conjunction with the accompanying drawings, the air quantity control method and system of cooling by wind of the invention are elaborated,
In the case of not conflicting, the feature in following embodiments and embodiment can be mutually combined.
The embodiment of the present invention provides a kind of air quantity control method of cooling by wind, can be applied to cooling by wind.
Referring to described in Fig. 1, the cooling by wind includes compressor 91, the condenser 92 and evaporator that are connected with the compressor 91
93rd, the expansion valve 94 that is connected between condenser 92 and evaporator 93 and it is arranged at the side of condenser 92 and is used for described cold
The blower fan 95 that condenser 92 is cooled down.The low-temperature low-pressure refrigerant gas sucked by compressor 91 after sweat cooling, then compresses
Condenser 92, the condensed device 92 of pressure high temperature hot gas is sent gas condensation is changed into normal temperature high voltage liquid after cooling down into high temperature and high pressure gas
Body, when normal temperature high voltage liquid flows into heating power expansion valve 94, through throttling into the damp steam of low-temp low-pressure, flows into shell-tube evaporator 93,
Absorbing the heat of the chilled water in evaporator 93 declines coolant-temperature gage, and the refrigerant after evaporation is sucked back into compressor 91 again, again
Next kind of refrigeration cycle is repeated, so as to realize refrigeration purpose.
Shown in Figure 2, the air quantity control method of cooling by wind of the present invention comprises the following steps：
Step S01：The steaming that the environment temperature run according to cooling by wind, the evaporator 93 of cooling by wind are run
The classical insulation of the compressor 91 of the air-breathing parameter and cooling by wind of hair parameter or compressor 91, is determined air-cooled
The target exhaust pressure ratio of the compressor 91 of handpiece Water Chilling Units.Alternatively, the vaporous parameter includes evaporating temperature or evaporating pressure,
The air-breathing parameter includes saturated suction temperature or pressure of inspiration(Pi).Alternatively, the classical insulation of the compressor 91 includes
Percentage of current, compressor horsepower percentage or compressor horsepower that compressor 91 is run.
Step S02：By the actual exhaust air pressure ratio of the compressor 91 of cooling by wind and the compression of cooling by wind
The target exhaust pressure ratio of machine 91 is compared in real time.
Step S03：Adjust the air quantity of the blower fan 95 of the side of condenser 92 of cooling by wind in real time according to comparison result.
In the present embodiment, the actually required target exhaust pressure ratio of compressor 91 is determined by calculation formula, is calculated
Formula is：PRStPt=ax1+b·x2+c·x3+d.Wherein, PRStPtIt is the target exhaust of the compressor 91 of cooling by wind
Pressure ratio；x1It is the environment temperature of cooling by wind operation；x2It is the vaporous parameter that the evaporator 93 of cooling by wind is run
Or the air-breathing parameter of compressor；x3It is the classical insulation of the compressor 91 of cooling by wind；A, b, c, d are based on air-cooled
One group of constant obtained by handpiece Water Chilling Units inherent parameters.With x2For the evaporating temperature of the operation of evaporator 93, x3Run for compressor 91
Percentage of current certain cooling by wind exemplified by, a, b, c, tetra- parameters of d are respectively a=-0.0685, b=0.04, c=
0.017, d=1.548, as environment temperature x1The evaporating temperature x run for 20C (DEG C), unit evaporator 932For 5C (DEG C), unit
The percentage of current x that compressor 91 is run3For 50% when, try to achieve goal pressure ratio for 2.913, be with x in the present embodiment2For
The evaporating temperature of the operation of evaporator 93, x3Exemplified by the percentage of current run for compressor 91, using calculating during other specification
Mode is identical.When the pressure ratio for surveying machine set compressor 91 is more than 2.913, it will the blower fan 95 of control condenser 92 side increases
Air quantity, conversely, reducing the air quantity of the blower fan 95 of the side of condenser 92 so that observed pressure is than matching goal pressure ratio.That is,
In above-mentioned calculation formula, the evaporation ginseng that the environment temperature of cooling by wind operation, the evaporator 93 of cooling by wind are run
The classical insulation of the compressor 91 of the air-breathing parameter and cooling by wind of number or compressor is variable, simplifies control
System input, while the classical insulation of the compressor 91 of cooling by wind is also very easy to read from the driving of compressor 91
Enter, the target exhaust pressure that these three data values can determine that the compressor 91 of cooling by wind is obtained and input by detection
Than, and the compressor 91 for passing through cooling by wind actual exhaust air pressure ratio and cooling by wind compressor 91 target
Exhaust pressure ratio is compared in real time, and the air quantity of the blower fan 95 of the side of condenser 92 of regulation cooling by wind, makes air-cooled in real time
The Energy Efficiency Ratio that handpiece Water Chilling Units can be optimal, is in optimal working condition all the time.
The air quantity control method of the cooling by wind of the present invention is by introducing the classical insulation of compressor 91 come table
The actual running status of whole cooling by wind is levied, the classical insulation of compressor 91 can be real as cooling by wind
The sign of border load and operating condition, simplifies control input, while considering the refrigerant displacement of compressor 91 and air-cooled
The condensing pressure of handpiece Water Chilling Units and the pressure difference of evaporating pressure for the air quantity of blower fan 95 demand, and by the two coupling factors
Unite two into one, adjust the air quantity of the blower fan 95 of the side of condenser 92 in real time according to both comparison results, realize the crosswind of condenser 92
The supply on demand of amount, the Energy Efficiency Ratio for enabling cooling by wind to be optimal is in optimal working condition all the time.
In the air quantity control method of the cooling by wind of the present invention, cooling by wind can be using multiloop design
(two or more self-contained refrigerating systems can share or not share water circuit system), in each refrigerating circuit (or each refrigeration system
System) in compressor 91 the maximum cold scope of whole cooling by wind is on the one hand extended by way of in parallel, while can
To improve Energy Efficiency Ratio during sub-load.
In an optional embodiment, the classical insulation of the compressor 91 is the electric current percentage that compressor 91 is run
Than the cooling by wind includes at least one refrigerating circuit, and the control method also includes step S011：According to the system
The maximum electricity that the actual motion current value of compressor 91 in cold loop allows with the compressor 91 in the refrigerating circuit
The ratio size of flow valuve, determines the percentage of current that the compressor 91 of cooling by wind is run.
In the present embodiment, by taking the single compressor of double loop as an example, the electric current hundred of the operation of compressor 91 of cooling by wind
Divide allows most than being equal to the actual motion current value of the compressor 91 in refrigerating circuit with compressor 91 in the refrigerating circuit
The ratio size of high current value.For example, only including a compressor A in a refrigerating circuit, then the pressure of cooling by wind
The percentage of current that contracting machine 91 is run is equal to compressor A actual motion current value IAPermit with compressor A in the refrigerating circuit
Perhaps maximum current value IA-MAXRatio size.
In an optional embodiment, the refrigerating circuit includes multiple compressors 91, and the control method also includes
Step S011 '：Existed according to the actual motion current value sum of each compressor 91 in the refrigerating circuit and each compressor 91
The ratio size of the maximum current value sum allowed in the refrigerating circuit, determines the pressure of each refrigerating circuit of cooling by wind
The percentage of current that contracting machine 91 is run.
In the present embodiment, by taking the double-compressor of double loop as an example, the electric current hundred of the operation of compressor 91 of cooling by wind
Divide and freeze back than the actual motion current value sum equal to each compressor 91 in refrigerating circuit with each compressor 91 described
The ratio size of the maximum current value sum allowed in road.For example, a refrigerating circuit includes a compressor A and a pressure
Contracting machine B, then the percentage of current that the compressor 91 of cooling by wind is run is equal to compressor A actual motion current value IA
And compressor B actual motion current value IBThe maximum current value I that sum allows with compressor A in the refrigerating circuitA-MAXAnd
The maximum current value I that compressor B allows in the refrigerating circuitB-MAXThe ratio size of sum.If only opening compressor A, that
The percentage of current that the compressor 91 of cooling by wind is run is equal to compressor A actual motion current value IAWith compressor
The maximum current value I that A allows in the refrigerating circuitA-MAXAnd the maximum current value that compressor B allows in the refrigerating circuit
IB-MAXThe ratio size of sum.If only opening compressor B, then the electric current percentage that the compressor 91 of cooling by wind is run
Than the actual motion current value I equal to compressor BBThe maximum current value I allowed with compressor A in the refrigerating circuitA-MAXAnd
The maximum current value I that compressor B allows in the refrigerating circuitB-MAXThe ratio size of sum.If refrigerating circuit includes two
Compressor more than individual, calculation when calculation includes two compressors with refrigerating circuit is identical.
It is shown in Figure 3, in an optional embodiment, in above-mentioned steps S03, adjusted in real time according to comparison result air-cooled
The air quantity of the blower fan 95 of the side of condenser 92 of handpiece Water Chilling Units, further comprises：
Step S031：The actual exhaust air pressure ratio for comparing out the compressor 91 of cooling by wind is more than cooling by wind
Compressor 91 target exhaust pressure ratio, increase cooling by wind the side of condenser 92 blower fan 95 air quantity, make air-cooled
The actual exhaust air pressure ratio of the compressor 91 of handpiece Water Chilling Units meets the target exhaust pressure ratio of the compressor 91 of cooling by wind.
Step S032：The actual exhaust air pressure ratio for comparing out the compressor 91 of cooling by wind is less than cooling by wind
Compressor 91 target exhaust pressure ratio, reduce cooling by wind the side of condenser 92 blower fan 95 air quantity, make air-cooled
The actual exhaust air pressure ratio of the compressor 91 of handpiece Water Chilling Units meets the target exhaust pressure ratio of the compressor 91 of cooling by wind.
In an optional embodiment, in above-mentioned steps S03, the cold of cooling by wind is adjusted in real time according to comparison result
The air quantity of the blower fan 95 of the side of condenser 92, further comprises step S033：
Compare out the actual exhaust air pressure ratio of the compressor 91 of cooling by wind and the compressor 91 of cooling by wind
Target exhaust pressure ratio difference beyond setting difference range (being optionally 0.05~0.2), adjust cooling by wind
The side of condenser 92 blower fan 95 air quantity, make the actual exhaust air pressure ratio and wind-cooled cold-water of the compressor 91 of cooling by wind
The difference of the target exhaust pressure ratio of the compressor 91 of unit meets the difference range of setting.
When the actual exhaust air pressure ratio for the compressor 91 for comparing out cooling by wind is more than the compression of cooling by wind
The target exhaust pressure ratio of machine 91, and the actual exhaust air pressure ratio and cooling by wind of the compressor 91 of cooling by wind
Compressor 91 target exhaust pressure ratio difference beyond setting difference range maximum (being optionally 0.2), increase
The air quantity of the blower fan 95 of the side of condenser 92 of cooling by wind, makes the actual exhaust air pressure of the compressor 91 of cooling by wind
Than the target exhaust pressure ratio for the compressor 91 for meeting cooling by wind.When the compressor 91 for comparing out cooling by wind
Actual exhaust air pressure ratio is less than the target exhaust pressure ratio of the compressor 91 of cooling by wind, and the pressure of cooling by wind
The difference of the actual exhaust air pressure ratio of contracting machine 91 and the target exhaust pressure ratio of the compressor 91 of cooling by wind is beyond setting
Difference range minimum value (being optionally 0.05), reduce cooling by wind the side of condenser 92 blower fan 95 air quantity,
Make the compressor 91 of cooling by wind actual exhaust air pressure ratio meet cooling by wind compressor 91 target exhaust
Pressure ratio.
It can be drawn, using the air quantity control method of the cooling by wind of the present invention, can measured in blower fan by table 1 below
When 95 air quantity reaches 41%, the total energy effect (EER) of cooling by wind can be made maximum.
| Air quantity percentage | Unit | 33% | 41% | 100% |
| Unit refrigerating capacity | kW | 169.25 | 172.30 | 169.40 |
| Unit COP | kW/kW | 6.87 | 7.14 | 4.29 |
| Unit exhaust pressure ratio | NONE | 2.16 | 2.07 | 1.78 |
Table 1
Shown in Figure 4, the embodiment of the present invention also provides a kind of air quantity control system of cooling by wind, for realizing
The air quantity control method of above-mentioned cooling by wind, the control system includes：
Environment temperature detection module 10, is configured as detecting the environment temperature of cooling by wind operation.
Parameter detection module 20, is configured as detecting the vaporous parameter or compression that the evaporator 93 of cooling by wind is run
The air-breathing parameter of machine.Alternatively, the vaporous parameter includes evaporating temperature or evaporating pressure, and the air-breathing parameter is inhaled including saturation
Temperature degree or pressure of inspiration(Pi).
Classical insulation determining module 30, is configured to determine that the electric property ginseng of the compressor 91 of cooling by wind
Number.Alternatively, the classical insulation of the compressor 91 includes percentage of current, the compressor horsepower hundred that compressor 91 is run
Divide ratio or compressor horsepower.
Exhaust pressure ratio determining module 40, with the environment temperature detection module 10, the parameter detection module 20 and
The classical insulation determining module 30 is connected, and is configured as according to the air-cooled cold of the environment temperature detection module 10 detection
The evaporation that the evaporator 93 for the cooling by wind that the environment temperature of water unit operation, the parameter detection module 20 are detected is run
The compression for the cooling by wind that parameter or the air-breathing parameter of compressor and the classical insulation determining module 30 are determined
The classical insulation of machine 91, determines the target exhaust pressure ratio of the compressor 91 of cooling by wind.
Comparing module 50, is connected with the exhaust pressure ratio determining module 40, is configured as the exhaust pressure ratio is true
The actual exhaust air pressure ratio and the compressor 91 of cooling by wind of the compressor 91 for the cooling by wind that cover half block 40 is determined
Target exhaust pressure ratio compared in real time.
Adjustment module 60, is connected with the comparing module 50, is configured as the comparison result according to the comparing module 50
The air quantity of the blower fan 95 of the side of condenser 92 of cooling by wind is adjusted in real time.
In the present embodiment, environment temperature, wind-cooled cold-water machine that cooling by wind is run are obtained and inputted by detection
Group evaporator 93 run vaporous parameter or compressor air-breathing parameter and cooling by wind compressor 91 it is electric
Three data values of performance parameter are the target exhaust pressure ratio for the compressor 91 that can determine that cooling by wind, and by air-cooled cold
The actual exhaust air pressure ratio of the compressor 91 of water dispenser group and the target exhaust pressure ratio of the compressor 91 of cooling by wind are carried out
Compare in real time, the air quantity of the blower fan 95 of the side of condenser 92 of regulation cooling by wind, enables cooling by wind to reach in real time
To optimal Energy Efficiency Ratio, optimal working condition is in all the time.
The air quantity control method of the cooling by wind of the present invention is by introducing the classical insulation of compressor 91 come table
The actual running status of whole cooling by wind is levied, the classical insulation of compressor 91 can be real as cooling by wind
The sign of border load and operating condition, simplifies control input, while considering the displacement and wind-cooled cold-water machine of compressor 91
The conjunction of the two coupling factors and two is by the condensing pressure of group and the pressure difference of evaporating pressure for the demand of the air quantity of blower fan 95
One, adjust the air quantity of the blower fan 95 of the side of condenser 92 in real time according to both comparison results, realize the crosswind amount of condenser 92 by
Supply is needed, the Energy Efficiency Ratio for enabling cooling by wind to be optimal is in optimal working condition all the time.
In an optional embodiment, the classical insulation of the compressor 91 is the electric current percentage that compressor 91 is run
Include at least one refrigerating circuit than, the cooling by wind, the classical insulation determining module 30 further by with
The actual motion current value for the compressor 91 being set in the refrigerating circuit is with the compressor 91 in the refrigerating circuit
The ratio size of the maximum current value of middle permission, determines the percentage of current that the compressor 91 of cooling by wind is run.
Further, the refrigerating circuit includes multiple compressors 91, and the classical insulation determining module 30 is entered
One step is configured as according to the actual motion current value sum of each compressor 91 in the refrigerating circuit and each compressor 91
The ratio size of the maximum current value sum allowed in the refrigerating circuit, determines each refrigerating circuit of cooling by wind
The percentage of current that compressor 91 is run.
In an optional embodiment, the adjustment module 60 is configured to：
When the comparing module 50 compares out the actual exhaust air pressure ratio of the compressor 91 of cooling by wind more than air-cooled
The target exhaust pressure ratio of the compressor 91 of handpiece Water Chilling Units, increases the wind of the blower fan 95 of the side of condenser 92 of cooling by wind
Amount, make the compressor 91 of cooling by wind actual exhaust air pressure ratio meet cooling by wind compressor 91 target row
Atmospheric pressure ratio；
When the comparing module 50 compares out the actual exhaust air pressure ratio of the compressor 91 of cooling by wind less than air-cooled
The target exhaust pressure ratio of the compressor 91 of handpiece Water Chilling Units, reduces the wind of the blower fan 95 of the side of condenser 92 of cooling by wind
Amount, make the compressor 91 of cooling by wind actual exhaust air pressure ratio meet cooling by wind compressor 91 target row
Atmospheric pressure ratio.
In an optional embodiment, the adjustment module 60 is configured to：
When the comparing module 50 compare out the actual exhaust air pressure ratio of the compressor 91 of cooling by wind with it is air-cooled cold
The difference of the target exhaust pressure ratio of the compressor 91 of water dispenser group adjusts the cold of cooling by wind beyond the difference range of setting
The air quantity of the blower fan 95 of the side of condenser 92, makes the actual exhaust air pressure ratio and cooling by wind of the compressor 91 of cooling by wind
The difference of target exhaust pressure ratio of compressor 91 meet the difference range of setting.Wherein, when comparing out cooling by wind
Compressor 91 actual exhaust air pressure ratio be more than cooling by wind compressor 91 target exhaust pressure ratio, it is and air-cooled
The actual exhaust air pressure ratio of the compressor 91 of handpiece Water Chilling Units and the target exhaust pressure ratio of the compressor 91 of cooling by wind
Difference increases the wind of the side of condenser 92 of cooling by wind beyond the maximum (being optionally 0.2) of the difference range of setting
The air quantity of machine 95, makes the actual exhaust air pressure ratio of the compressor 91 of cooling by wind meet the compressor 91 of cooling by wind
Target exhaust pressure ratio.When the actual exhaust air pressure ratio for the compressor 91 for comparing out cooling by wind is less than wind-cooled cold-water machine
Group compressor 91 target exhaust pressure ratio, and the actual exhaust air pressure ratio of the compressor 91 of cooling by wind with it is air-cooled
The difference of the target exhaust pressure ratio of the compressor 91 of handpiece Water Chilling Units (is optionally beyond the minimum value of the difference range of setting
0.05), reduce the air quantity of the blower fan 95 of the side of condenser 92 of cooling by wind, make the reality of the compressor 91 of cooling by wind
Border exhaust pressure ratio meets the target exhaust pressure ratio of the compressor 91 of cooling by wind.
Those skilled in the art will readily occur to its of the present invention after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by the application
Claim point out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (14)
1. a kind of air quantity control method of cooling by wind, the cooling by wind includes compressor and the compressor
The condenser and evaporator of connection and it is arranged at the condenser side and is used for the blower fan that is cooled down to the condenser, its
It is characterised by, the control method includes：
The environment temperature run according to cooling by wind, the vaporous parameter or compressor of the evaporator operation of cooling by wind
Air-breathing parameter and cooling by wind compressor classical insulation, determine the mesh of the compressor of cooling by wind
Mark exhaust pressure ratio；
By the actual exhaust air pressure ratio of the compressor of cooling by wind and the target exhaust pressure of the compressor of cooling by wind
Power ratio is compared in real time；
Adjust the air quantity of the blower fan of the condenser side of cooling by wind in real time according to comparison result.
2. the air quantity control method of cooling by wind according to claim 1, it is characterised in that the compression electrical-mechanical
Performance parameter includes percentage of current, compressor horsepower percentage or the compressor horsepower of compressor operating.
3. the air quantity control method of cooling by wind according to claim 2, it is characterised in that the compression electrical-mechanical
Performance parameter is the percentage of current of compressor operating, and the cooling by wind includes at least one refrigerating circuit, the control
Method processed also includes：
The actual motion current value of compressor in the refrigerating circuit is permitted with the compressor in the refrigerating circuit
Perhaps the ratio size of maximum current value, determines the percentage of current of the compressor operating of cooling by wind.
4. the air quantity control method of cooling by wind according to claim 3, it is characterised in that in the refrigerating circuit
Including multiple compressors, existed according to the actual motion current value sum of each compressor in the refrigerating circuit and each compressor
The ratio size of the maximum current value sum allowed in the refrigerating circuit, determines the pressure of each refrigerating circuit of cooling by wind
The percentage of current of contracting machine operation.
5. the air quantity control method of cooling by wind according to claim 1, it is characterised in that real according to comparison result
When regulation cooling by wind condenser side blower fan air quantity, including：
Compare out target of the actual exhaust air pressure ratio more than the compressor of cooling by wind of the compressor of cooling by wind
Exhaust pressure ratio, increases the air quantity of the blower fan of the condenser side of cooling by wind, makes the reality of the compressor of cooling by wind
Border exhaust pressure ratio meets the target exhaust pressure ratio of the compressor of cooling by wind；
Compare out target of the actual exhaust air pressure ratio less than the compressor of cooling by wind of the compressor of cooling by wind
Exhaust pressure ratio, reduces the air quantity of the blower fan of the condenser side of cooling by wind, makes the reality of the compressor of cooling by wind
Border exhaust pressure ratio meets the target exhaust pressure ratio of the compressor of cooling by wind.
6. the air quantity control method of cooling by wind according to claim 1, it is characterised in that real according to comparison result
When regulation cooling by wind condenser side blower fan air quantity, including：
The target for comparing out the actual exhaust air pressure ratio of the compressor of cooling by wind and the compressor of cooling by wind is arranged
Atmospheric pressure than difference beyond setting difference range, adjust cooling by wind condenser side blower fan air quantity, make wind
The difference of the actual exhaust air pressure ratio of the compressor of cold handpiece Water Chilling Units and the target exhaust pressure ratio of the compressor of cooling by wind
Value meets the difference range of setting.
7. the air quantity control method of cooling by wind according to claim 1, it is characterised in that the vaporous parameter bag
Include evaporating temperature or evaporating pressure；The air-breathing parameter includes saturated suction temperature or pressure of inspiration(Pi).
8. a kind of air quantity control system of cooling by wind, the cooling by wind includes compressor and the compressor
The condenser and evaporator of connection and it is arranged at the condenser side and is used for the blower fan that is cooled down to the condenser, its
It is characterised by, the control system includes：
Environment temperature detection module, is configured as detecting the environment temperature of cooling by wind operation；
Parameter detection module, is configured as detecting the vaporous parameter or the air-breathing of compressor of the evaporator operation of cooling by wind
Parameter；
Classical insulation determining module, is configured to determine that the compressor classical insulation of cooling by wind；
Exhaust pressure ratio determining module, with the environment temperature detection module, the parameter detection module and the electrical resistance
Energy parameter determination module is connected, and is configured as the ring that cooling by wind is run detected according to the environment temperature detection module
Border temperature, the vaporous parameter of the evaporator operation of the cooling by wind of parameter detection module detection or the air-breathing of compressor
The compressor classical insulation for the cooling by wind that parameter and the classical insulation determining module are determined, determines wind
The target exhaust pressure ratio of the compressor of cold handpiece Water Chilling Units；
Comparing module, is connected with the exhaust pressure ratio determining module, is configured as the exhaust pressure ratio determining module is true
The target exhaust pressure of the actual exhaust air pressure ratio of the compressor of fixed cooling by wind and the compressor of cooling by wind
Than being compared in real time；
Adjustment module, is connected with the comparing module, is configured as adjusting wind in real time according to the comparison result of the comparing module
The air quantity of the blower fan of the condenser side of cold handpiece Water Chilling Units.
9. the air quantity control system of cooling by wind according to claim 8, it is characterised in that the compression electrical-mechanical
Performance parameter includes percentage of current, compressor horsepower percentage or the compressor horsepower of compressor operating.
10. the air quantity control system of cooling by wind according to claim 9, it is characterised in that the compression is electromechanical
Gas performance parameter is the percentage of current of compressor operating, and the cooling by wind includes at least one refrigerating circuit, described
Classical insulation determining module is configured to the actual motion current value of the compressor in the refrigerating circuit
The ratio size of the maximum current value allowed with the compressor in the refrigerating circuit, determines the compression of cooling by wind
The percentage of current of machine operation.
11. the air quantity control system of cooling by wind according to claim 10, it is characterised in that the refrigerating circuit
Include multiple compressors, the classical insulation determining module is configured to according to each in the refrigerating circuit
The maximum current value sum that the actual motion current value sum of compressor allows with each compressor in the refrigerating circuit
Ratio size, determines the percentage of current of the compressor operating of each refrigerating circuit of cooling by wind.
12. the air quantity control system of cooling by wind according to claim 8, it is characterised in that the adjustment module
It is configured to：
When the actual exhaust air pressure ratio that the comparison module goes out the compressor of cooling by wind is more than cooling by wind
Compressor target exhaust pressure ratio, increase cooling by wind condenser side blower fan air quantity, make wind-cooled cold-water machine
The actual exhaust air pressure ratio of the compressor of group meets the target exhaust pressure ratio of the compressor of cooling by wind；
When the actual exhaust air pressure ratio that the comparison module goes out the compressor of cooling by wind is less than cooling by wind
Compressor target exhaust pressure ratio, reduce cooling by wind condenser side blower fan air quantity, make wind-cooled cold-water machine
The actual exhaust air pressure ratio of the compressor of group meets the target exhaust pressure ratio of the compressor of cooling by wind.
13. the air quantity control system of cooling by wind according to claim 8, it is characterised in that the adjustment module
It is configured to：
When the comparison module goes out the actual exhaust air pressure ratio and cooling by wind of the compressor of cooling by wind
The difference of the target exhaust pressure ratio of compressor adjusts the wind of the condenser side of cooling by wind beyond the difference range of setting
The air quantity of machine, arranges the actual exhaust air pressure ratio of the compressor of cooling by wind and the target of the compressor of cooling by wind
Atmospheric pressure than difference meet the difference range of setting.
14. the air quantity control system of cooling by wind according to claim 8, it is characterised in that the vaporous parameter
Including evaporating temperature or evaporating pressure；The air-breathing parameter includes saturated suction temperature or pressure of inspiration(Pi).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006919A (en) * | 2017-11-15 | 2018-05-08 | 珠海格力电器股份有限公司 | Evaporative cooling type water chilling unit, and control method and control system thereof |
| CN108036568A (en) * | 2017-11-24 | 2018-05-15 | 淮北智淮科技有限公司 | A kind of cooling water circulation machine |
| CN109708273A (en) * | 2018-12-29 | 2019-05-03 | 广东美的暖通设备有限公司 | The control method and its device of cryogenic refrigeration air-valve |
| CN110006140A (en) * | 2019-03-04 | 2019-07-12 | 青岛海尔空调电子有限公司 | Control method and air-cooled magnetic suspension unit for air-cooled magnetic suspension unit |
| US10386820B2 (en) | 2014-05-01 | 2019-08-20 | Johnson Controls Technology Company | Incorporating a demand charge in central plant optimization |
| CN111457628A (en) * | 2020-04-17 | 2020-07-28 | 特灵空调系统(中国)有限公司 | Cold water device and control method for optimizing refrigerant charge |
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| CN115628530A (en) * | 2022-10-26 | 2023-01-20 | 珠海格力电器股份有限公司 | Fan control method, device and unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100656164B1 (en) * | 2005-12-21 | 2006-12-13 | 삼성전자주식회사 | Air conditioner and its control method |
| US8702482B2 (en) * | 2004-12-07 | 2014-04-22 | Trane International Inc. | Ventilation controller |
| CN104633869A (en) * | 2015-03-16 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method and system for air conditioner outdoor unit |
| CN104838214A (en) * | 2012-10-10 | 2015-08-12 | 特灵国际有限公司 | Variable fan speed control in hvac systems and methods |
| CN106524421A (en) * | 2016-11-28 | 2017-03-22 | 广东美芝制冷设备有限公司 | Air conditioning system |
| CN106595154A (en) * | 2016-10-18 | 2017-04-26 | 珠海格力电器股份有限公司 | Condensing unit operation control method and device and refrigeration equipment with same |
-
2017
- 2017-06-23 CN CN201710484400.8A patent/CN107238180B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8702482B2 (en) * | 2004-12-07 | 2014-04-22 | Trane International Inc. | Ventilation controller |
| KR100656164B1 (en) * | 2005-12-21 | 2006-12-13 | 삼성전자주식회사 | Air conditioner and its control method |
| CN104838214A (en) * | 2012-10-10 | 2015-08-12 | 特灵国际有限公司 | Variable fan speed control in hvac systems and methods |
| CN104633869A (en) * | 2015-03-16 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method and system for air conditioner outdoor unit |
| CN106595154A (en) * | 2016-10-18 | 2017-04-26 | 珠海格力电器股份有限公司 | Condensing unit operation control method and device and refrigeration equipment with same |
| CN106524421A (en) * | 2016-11-28 | 2017-03-22 | 广东美芝制冷设备有限公司 | Air conditioning system |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11275355B2 (en) | 2014-05-01 | 2022-03-15 | Johnson Controls Technology Company | Incorporating a demand charge in central plant optimization |
| US11803174B2 (en) | 2014-05-01 | 2023-10-31 | Johnson Controls Technology Company | Building management system for forecasting time series values of building variables |
| US10386820B2 (en) | 2014-05-01 | 2019-08-20 | Johnson Controls Technology Company | Incorporating a demand charge in central plant optimization |
| US11774948B2 (en) | 2014-05-01 | 2023-10-03 | Johnson Controls Technology Company | High level central plant optimization |
| US10915094B2 (en) | 2014-05-01 | 2021-02-09 | Johnson Controls Technology Company | High level central plant optimization |
| CN108006919A (en) * | 2017-11-15 | 2018-05-08 | 珠海格力电器股份有限公司 | Evaporative cooling type water chilling unit, and control method and control system thereof |
| CN108036568A (en) * | 2017-11-24 | 2018-05-15 | 淮北智淮科技有限公司 | A kind of cooling water circulation machine |
| CN109708273A (en) * | 2018-12-29 | 2019-05-03 | 广东美的暖通设备有限公司 | The control method and its device of cryogenic refrigeration air-valve |
| WO2020177309A1 (en) * | 2019-03-04 | 2020-09-10 | 青岛海尔空调电子有限公司 | Air-cooled magnetic levitation unit control method and air-cooled magnetic levitation unit |
| CN110006140A (en) * | 2019-03-04 | 2019-07-12 | 青岛海尔空调电子有限公司 | Control method and air-cooled magnetic suspension unit for air-cooled magnetic suspension unit |
| CN111457628B (en) * | 2020-04-17 | 2021-11-23 | 特灵空调系统(中国)有限公司 | Cold water device and control method for optimizing refrigerant charge |
| CN111457628A (en) * | 2020-04-17 | 2020-07-28 | 特灵空调系统(中国)有限公司 | Cold water device and control method for optimizing refrigerant charge |
| CN112628895A (en) * | 2020-12-28 | 2021-04-09 | 青岛海尔空调电子有限公司 | Direct expansion type air conditioning unit and control method thereof |
| CN112628895B (en) * | 2020-12-28 | 2022-10-28 | 青岛海尔空调电子有限公司 | Direct expansion type air conditioning unit and control method thereof |
| CN115628530A (en) * | 2022-10-26 | 2023-01-20 | 珠海格力电器股份有限公司 | Fan control method, device and unit |
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