CN104748421B - High-low temperature environment air-cooled chiller unit and control method thereof - Google Patents
High-low temperature environment air-cooled chiller unit and control method thereof Download PDFInfo
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- CN104748421B CN104748421B CN201510103831.6A CN201510103831A CN104748421B CN 104748421 B CN104748421 B CN 104748421B CN 201510103831 A CN201510103831 A CN 201510103831A CN 104748421 B CN104748421 B CN 104748421B
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a high-low temperature environment air-cooled chiller unit and a control method thereof. By adopting the cooperation of a water system and a cooling system, the overall unit is reasonable in design, intelligent in control, wide in adaptation environment range and stable and reliable in operation, energy is saved, and important significance on improving the reliability, operated for a long term and under the limiting ambient temperature, of the air-cooled chiller unit used in a data center or a process requirement place where cooling is still needed under the high temperature environment and low temperature environment is achieved.
Description
Technical field
It is the present invention relates to a kind of cooling by wind, particularly a kind of to remain to normal refrigerating operaton under high and low temperature environment
High and low temperature environment cooling by wind and its control method.
Background technology
Current communication machine room, particularly large-scale data center usually adopt wind-cooled cold-water machine to be logical as low-temperature receiver
The indoor end of the air-conditioning equipment in news machine room provides chilled water, so as to the indoor environment to communication machine room carries out refrigeration cool-down.
As the communication apparatus in communication machine room is substantially at annual uninterrupted operation state, and caloric value is very big, therefore, no matter
It is all hot summer, or in cold winter, for the wind-cooled cold-water machine of communication machine room, is required to stablize refrigerating operaton.
In -10 ~ 43 DEG C of conventional environment areas, existing general cooling by wind, can realize that year round cooling is transported at present
OK, but in the case of 43 ~ 60 DEG C of hot environments or -50 ~ -10 DEG C of low temperature environments, then normally cannot run.
In the case of -50 ~ -10 DEG C of low temperature environments, general cooling by wind adopts compressor cooling cooling, compressor
Easily there is condensing pressure too low, height pressure reduction is low, beyond compressor normal operation range, cause refrigeration system feed flow not enough
The problem of compressor is not burnt freely with oil return.Although part of generating units employs blower fan start-stop or speed governing to control refrigeration system
Condensing pressure, this mode have certain effect in -10 DEG C or more temperature environments, but if in more low temperature environment -10 ~ -
When 50 DEG C, depend merely on start-stop or speed governing cannot be realized effectively controlling at all to condensing pressure, even if because now stopping completely cold
Solidifying blower fan, as outdoor temperature is very low, condensing pressure can be very low, and reliability cannot be protected.
In the case of 43 ~ 60 DEG C of hot environments, general cooling by wind adopts compressor cooling cooling, compressor displacement
Easily there is condensing pressure too high, beyond compressor normal operation range, cause refrigeration system delivery temperature and hypertonia, occur
Lubricating oil is carbonized and burns the problem of compressor.
Therefore, existing common wind-cooled cold-water machine longtime running has larger in the outdoor environment temperature of low temperature or high temperature
Potential safety hazard, and the cooling by wind reliability requirement for being applied to data center is very high, will cause if there is failure
A large amount of important communications cannot normal work, existing common wind-cooled cold-water machine is unable to reach use requirement.
Therefore, prior art has yet to be improved and developed.
The content of the invention
It is an object of the invention to provide a kind of high and low temperature environment cooling by wind and its control method, it is intended to solve existing
With the presence of common wind-cooled cold-water machine longtime running in low temperature or high temperature outdoor environment larger potential safety hazard, it is impossible to meet data
The problem of center use requirement.
Technical scheme is as follows：
A kind of high and low temperature environment cooling by wind, wherein, including refrigeration system, air-conditioning secondary refrigerant system, axial flow blower
Cooling system and automatic control system；The refrigeration system includes compressor, condenser, vaporizer and pressure transducer；It is described
Air-conditioning secondary refrigerant system includes surface cooler, three-way valve, water pump, and surface cooler is arranged in condenser；The axial flow blower cooling system
System includes axial flow blower；The automatic control system includes inflow temperature sensor, leaving water temperature sensors, ambient temperature sensing
Device, sensor data acquisition system and central control system；The a interfaces of the three-way valve are connected with one end of vaporizer, evaporation
The other end of device is connected with water pump one end, water pump other end connection air conditioning pipe system；The b interfaces connection air-conditioning refrigerating of three-way valve
Agent pipeline, the b interfaces of three-way valve are also connected with the arrival end of surface cooler, and the port of export of surface cooler is connected with the c interfaces of three-way valve；
Vaporizer one end is connected with compressor one end, and the compressor other end is connected with condenser one end, the condenser other end and vaporizer
The other end connects；The pressure transducer is arranged between vaporizer and condenser, and inflow temperature sensor is arranged on air-conditioning load
On refrigerant circuit, leaving water temperature sensors are arranged on the water pump other end；The inflow temperature sensor, leaving water temperature sensing
Device, environment temperature sensor and pressure transducer are all connected with sensor data acquisition system, sensor data acquisition system with
Central control system connects, and the compressor, three-way valve, water pump, axial flow blower are all connected with central control system respectively.
Described high and low temperature environment cooling by wind, wherein, the axial flow blower is connected with axial flow blower buncher,
Axial flow blower buncher is connected with Axial-flow fan motor speed regulator, axial flow blower buncher and Axial-flow fan motor speed regulator
It is connected with central control system, axial flow blower buncher is carried out by central control system control axial flow blower machine governor
Speed governing, carries out speed governing to axial flow blower then.
Described high and low temperature environment cooling by wind, wherein, is provided between the vaporizer and pressure transducer swollen
Swollen valve.
Described high and low temperature environment cooling by wind, wherein, is connected with traffic protection on the air-conditioning refrigerating medium pipeline
Device, inflow temperature sensor are placed between traffic protection device and the b interfaces of three-way valve, traffic protection device and sensor data acquisition
System connects, and air-conditioning refrigerating medium enters high and low temperature environment cooling by wind after the flow-control of traffic protection device.
A kind of control method of the high and low temperature environment cooling by wind as described in above-mentioned any one is wherein, concrete to wrap
Include following steps：
Step A00：The turnover coolant-temperature gage of setting unit；
Step B00：By sensor data acquisition system gather unit actual motion pressure at expulsion, turnover coolant-temperature gage,
To central control system, central control system calculates judgement to the feedback of the information of traffic protection device and ambient temperature automatically, draws knot
Really；
Step C00：Unlatching or shutdown of the central control system according to output control compressor, Axial-flow fan motor speed regulator
The condensation radiating air quantity of the rotating speed and axial flow blower of stepless control Axial-flow fan motor, controls the unlatching or shutdown of water pump, control
The unlatching ratio of three-way valve, adjusts the actual turnover coolant-temperature gage of unit in the range of setting Inlet and outlet water temperature value, so as to protect
Unit refrigerating operaton reliability in high temperature environments.
The control method of described high and low temperature environment cooling by wind, wherein, the control to axial flow blower is as follows：
Step a10：The ambient temperature that set environment temperature sensor is detected is TEnvironment, ambient temperature temperature difference setting value 1 is
ΔtRing setting 1, the inflow temperature T that inflow temperature sensor is detectedWater inlet, the refrigeration system condensing pressure that pressure transducer is detected
Numerical value PDetection, pressure set points 1 are PSetting 1, pressure set points 2 are PSetting 2；
Step b10：Central control system judges whether compressor is opened, if compressor is opened, execution step c10 is to step
G10, if compressor shutdown, execution step h10 is to step j10；
Step c10：Central control system judges PDetectionWith PSetting 1、PSetting 2Size, if PDetection≦PSetting 1, execution step d10,
If PSetting 1＜ PDetection≤PSetting 2, execution step e10, if PDetection>PSetting 2, execution step f10；
Step d10：Central control system control Axial-flow fan motor is closed, and axial flow blower is accordingly turned off；
Step e10：Central control system judges PDetectionReduce or rise, if PDetectionReduce, execution step f10, if PDetection
Rise, execution step g10；
Step f10：The stepless rotating speed for reducing Axial-flow fan motor of central control system control axial flow blower machine governor,
So as to reduce the rotating speed of axial flow blower, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, pressure at expulsion is made in compressor
In safety range, it is ensured that compressor can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step g10：The stepless rotating speed for lifting Axial-flow fan motor of central control system control axial flow blower machine governor,
So as to lift the rotating speed of axial flow blower, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, pressure at expulsion is made in compressor
In safety range, it is ensured that compressor can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step h10：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, perform
Step i10, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step j10；
Step i10：Central control system controls axial flow blower motor stopping, and axial flow blower is shut down therewith；
Step j10：Central control system controls axial flow blower machine governor and adjusts the rotating speed of Axial-flow fan motor for most
Greatly, axial flow blower presses maximum (top) speed operating therewith always.
The control method of described high and low temperature environment cooling by wind, wherein, the control to compressor is as follows：
Step a20：Leaving water temperature that leaving water temperature sensors detect is set as TWater outlet, water outlet temperature setting value is
TWater outlet sets, temperature difference setting value 1 is Δ tSetting 1；
Step b20：Central control system judges TWater outletWith TWater outlet sets+ΔtSetting 1、TWater outlet sets-ΔtSetting 1Size, if TWater outlet＞
TWater outlet sets+ΔtSetting 1, execution step c10, if TWater outlet≤TWater outlet sets-ΔtSetting 1, execution step d10, if TWater outlet sets-ΔtSetting 1<TWater outlet≦
TWater outlet sets+ΔtSetting 1, execution step e10；
Step c10：Compressor opens refrigeration cooling；
Step d10：Compressor is closed and stops refrigeration cooling；
Step e10：Compressor does not change standing state.
The control method of described high and low temperature environment cooling by wind, wherein, the control to axial flow blower is as follows：To three
The control of port valve is as follows：
Step a30：The ambient temperature that set environment temperature sensor is detected is TEnvironment, ambient temperature temperature difference setting value 1 is
ΔtRing setting 1, the inflow temperature that inflow temperature sensor is detected is TWater inlet, the refrigeration system condensation pressure that pressure transducer is detected
Power numerical value is PDetection, pressure set points 3 are PSetting 3, pressure set points 4 are PSetting 4, the ambient temperature that leaving water temperature sensors are detected
TWater outlet, water outlet temperature setting value TWater outlet sets, temperature difference setting value 1 is Δ tSetting 1, temperature difference setting value 2 is Δ tSetting 2, temperature difference setting value 3 is
ΔtSetting 3；
Step b30：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, step
C30 is to step h30, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step i30 is to step m30；
Step c30：Central control system judges PDetectionWith PSetting 3、PSetting 4Size, if PDetection＜ PSetting 3, execution step d30,
If PSetting 3≤PDetection＜ PSetting 4, execution step e30 is to step g30, if PDetection＞ PSetting 4, execution step h30；
Step d30：The c-a passages of three-way valve are fully closed, b-a passage standard-sized sheets；
Step e30：Central control system judges PDetectionRise or decline, if PDetectionRise, execution step f30, if PDetection
Decline, execution step g30；
Step f30：The c-a passages ratio increase of three-way valve, b-a passage ratios are accordingly reduced；
Step g30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase；
Step h30：The c-a passage standard-sized sheets of three-way valve, b-a passages are fully closed；
Step i30:Central control system judges TWater outletWith TWater outlet sets-ΔtSetting 3、TWater outlet sets-ΔtSetting 2、TWater outlet sets+ΔtSetting 1With
TWater outlet sets-ΔtSetting 1Size, if TWater outlet sets+ΔtSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 1, execution step j30, if TWater outlet sets-Δ
tSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 2, execution step l30, if TWater outlet sets-ΔtSetting 2≥TWater outlet＞ TWater outlet sets-ΔtSetting 3, execution step
m30；
Step j30：The c-a passage standard-sized sheets of three-way valve, b-a passages are fully closed；
Step l30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase；
Step m30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase.
Beneficial effects of the present invention：The present invention is by providing a kind of high and low temperature environment cooling by wind and its controlling party
Method, is engaged with refrigeration system using water system, and whole unit design is reasonable, it is intelligent to control, adapt to environmental field width, operation surely
Fixed reliable, energy saving, for the field for still needing to cooling under the lifting hot environment such as data center or process requirements and low temperature environment
The cooling by wind for being used reliability of operation under long-term and limiting ambient temperature is significant.
Description of the drawings
Fig. 1 is the structural representation of high and low temperature environment cooling by wind in the present invention.
The step of Fig. 2 is high and low temperature environment cooling by wind control method in present invention flow chart.
Specific embodiment
For making the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.
As shown in figure 1, this high and low temperature environment cooling by wind includes refrigeration system, air-conditioner water system（That is, air-conditioning is carried
Cryogen system）, axial flow blower cooling system and automatic control system；The refrigeration system include compressor 110, condenser 120,
Vaporizer 130 and pressure transducer 140；The air-conditioning secondary refrigerant system includes surface cooler 210, three-way valve 220, water pump 230, table
Cooler 210 is arranged in condenser 120；The axial flow blower cooling system includes axial flow blower 320；The automatic control system
Including inflow temperature sensor 420, leaving water temperature sensors 430, environment temperature sensor 440, sensor data acquisition system
And central control system；The a interfaces of the three-way valve 220 are connected with one end of vaporizer 130, the other end of vaporizer 130 with
230 one end of water pump connects, 230 other end of water pump connection air conditioning pipe system；The b interfaces connection air-conditioning refrigerating medium of three-way valve 220
Pipeline, the b interfaces of three-way valve 220 are also connected with the arrival end of surface cooler 210, the port of export and the three-way valve 220 of surface cooler 210
C interfaces connect；130 one end of vaporizer is connected with 110 one end of compressor, and 110 other end of compressor is connected with 120 one end of condenser
Connect, 120 other end of condenser is connected with the vaporizer other end；The pressure transducer 140 is arranged on vaporizer 130 and condenser
Between 120, inflow temperature sensor 420 is arranged on air-conditioning refrigerating medium pipeline, and leaving water temperature sensors 430 are arranged on water pump
On 230 other ends；The inflow temperature sensor 420, leaving water temperature sensors 430, environment temperature sensor 440 and pressure are passed
Sensor 140 is all connected with sensor data acquisition system, and sensor data acquisition system is connected with central control system, the pressure
Contracting machine 110, three-way valve 220, water pump 230, axial flow blower 320 are all connected with central control system respectively.
For the ease of carrying out speed governing to axial flow blower 320, the axial flow blower 320 is connected with axial flow blower buncher 310
Connect, axial flow blower buncher 310 is connected with Axial-flow fan motor speed regulator 410, axial flow blower buncher 310 and axle stream wind
Machine machine governor 410 is connected with central control system, countershaft by central control system control axial flow blower machine governor 410
Flow fan buncher 310 carries out speed governing, carries out speed governing to axial flow blower 320 then.
In order to control the flow of cold-producing medium in vaporizer 130, arrange between the vaporizer 130 and pressure transducer 140
There is expansion valve 111.
In order to protect the normal operation of each equipment, traffic protection device 221 on the air-conditioning refrigerating medium pipeline, is connected with, is intake
Temperature sensor 420 is placed between traffic protection device 221 and the b interfaces of three-way valve 220, traffic protection device 221 and sensor number
Connect according to acquisition system, air-conditioning refrigerating medium enters high and low temperature environment wind-cooled cold-water after the flow-control of traffic protection device 221
Unit.
As shown in Fig. 2 a kind of control method of high and low temperature environment cooling by wind as described above, specifically include with
Lower step：
Step A00：The turnover coolant-temperature gage of setting unit；
Step B00：By sensor data acquisition system gather unit actual motion pressure at expulsion, turnover coolant-temperature gage,
To central control system, central control system calculates judgement to the feedback of the information of traffic protection device and ambient temperature automatically, draws knot
Really；
Step C00：Unlatching or shutdown of the central control system according to output control compressor 110, Axial-flow fan motor are adjusted
The condensation radiating air quantity of the rotating speed and axial flow blower 320 of the stepless control Axial-flow fan motor 310 of fast device 410, controls water pump 230
Open or shut down, control the unlatching ratio of three-way valve 220, the actual turnover coolant-temperature gage of unit is adjusted in setting Inlet and outlet water temperature value
In the range of, so as to protect unit refrigerating operaton reliability in high temperature environments.
Specifically, the control wherein to axial flow blower 320 is as follows：
Step a10：The ambient temperature that set environment temperature sensor 440 is detected is TEnvironment, the setting of the ambient temperature temperature difference
Value 1 is Δ tRing setting 1, the inflow temperature T that inflow temperature sensor 420 is detectedWater inlet, the refrigeration that pressure transducer 140 is detected
System condensing pressure value PDetection, pressure set points 1 are PSetting 1, pressure set points 2 are PSetting 2；
Step b10：Central control system judges whether compressor is opened, if compressor is opened, execution step c10 is to step
G10, if compressor shutdown, execution step h10 is to step j10；
Step c10：Central control system judges PDetectionWith PSetting 1、PSetting 2Size, if PDetection≦PSetting 1, execution step d10,
If PSetting 1＜ PDetection≤PSetting 2, execution step e10, if PDetection>PSetting 2, execution step f10；
Step d10：Central control system control Axial-flow fan motor 310 is closed, and axial flow blower 320 is accordingly turned off；
Step e10：Central control system judges PDetectionReduce or rise, if PDetectionReduce, execution step f10, if PDetection
Rise, execution step g10；
Step f10：Central control system control axial flow blower machine governor 410 is stepless to reduce Axial-flow fan motor 310
Rotating speed, so as to reduce the rotating speed of axial flow blower 320, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, make at pressure at expulsion
In the safety range of compressor 110, it is ensured that compressor 110 can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step g10：Central control system control axial flow blower machine governor 410 is stepless to lift Axial-flow fan motor 310
Rotating speed, so as to lift the rotating speed of axial flow blower 320, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, make at pressure at expulsion
In the safety range of compressor 110, it is ensured that compressor 110 can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step h10：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, perform
Step i10, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step j10；
Step i10：Central control system control Axial-flow fan motor 310 is shut down, and axial flow blower 320 is shut down therewith；
Step j10：Central control system control axial flow blower machine governor 410 adjusts turning for Axial-flow fan motor 310
Speed is maximum, and axial flow blower 320 presses maximum (top) speed operating therewith always.
Specifically, the control wherein to compressor 110 is as follows：
Step a20：Leaving water temperature that leaving water temperature sensors 430 detect is set as TWater outlet, water outlet temperature setting value is
TWater outlet sets, temperature difference setting value 1 is Δ tSetting 1；
Step b20：Central control system judges TWater outletWith TWater outlet sets+ΔtSetting 1、TWater outlet sets-ΔtSetting 1Size, if TWater outlet＞
TWater outlet sets+ΔtSetting 1, execution step c10, if TWater outlet≤TWater outlet sets-ΔtSetting 1, execution step d10, if TWater outlet sets-ΔtSetting 1<TWater outlet≦
TWater outlet sets+ΔtSetting 1, execution step e10；
Step c10：Compressor 110 opens refrigeration cooling；
Step d10：Compressor 110 is closed and stops refrigeration cooling；
Step e10：Compressor 110 does not change standing state.
Specifically, the control wherein to three-way valve 220 is as follows：
Step a30：The ambient temperature that set environment temperature sensor 440 is detected is TEnvironment, the setting of the ambient temperature temperature difference
Value 1 is Δ tRing setting 1, the inflow temperature that inflow temperature sensor 420 is detected is TWater inlet, the refrigeration that pressure transducer 140 is detected
System condensing pressure value is PDetection, pressure set points 3 are PSetting 3, pressure set points 4 are PSetting 4, leaving water temperature sensors 430 visit
Ambient temperature T for measuringWater outlet, water outlet temperature setting value TWater outlet sets, temperature difference setting value 1 is Δ tSetting 1, temperature difference setting value 2 is Δ tSetting 2,
Temperature difference setting value 3 is Δ tSetting 3；
Step b30：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, perform
Step c30 is to step h30, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step i30 is to step m30；
Step c30：Central control system judges PDetectionWith PSetting 3、PSetting 4Size, if PDetection＜ PSetting 3, execution step d30,
If PSetting 3≤PDetection＜ PSetting 4, execution step e30 is to step g30, if PDetection＞ PSetting 4, execution step h30；
Step d30：The c-a passages of three-way valve 220 are fully closed, b-a passage standard-sized sheets；
Step e30：Central control system judges PDetectionRise or decline, if PDetectionRise, execution step f30, if PDetection
Decline, execution step g30；
Step f30：The c-a passages ratio increase of three-way valve 220, b-a passage ratios are accordingly reduced；
Step g30：The c-a passages ratio of three-way valve 220 is reduced, and b-a passage ratios accordingly increase；
Step h30：The c-a passage standard-sized sheets of three-way valve 220, b-a passages are fully closed；
Step i30:Central control system judges TWater outletWith TWater outlet sets-ΔtSetting 3、TWater outlet sets-ΔtSetting 2、TWater outlet sets+ΔtSetting 1With
TWater outlet sets-ΔtSetting 1Size, if TWater outlet sets+ΔtSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 1, execution step j30, if TWater outlet sets-Δ
tSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 2, execution step l30, if TWater outlet sets-ΔtSetting 2≥TWater outlet＞ TWater outlet sets-ΔtSetting 3, execution step
m30；
Step j30：The c-a passage standard-sized sheets of three-way valve 220, b-a passages are fully closed；
Step l30：The c-a passages ratio of three-way valve 220 is reduced, and b-a passage ratios accordingly increase；
Step m30：The c-a passages ratio of three-way valve 220 is reduced, and b-a passage ratios accordingly increase.
This high and low temperature environment cooling by wind is engaged with refrigeration system using water system, whole unit design rationally,
Control intelligence, adaptation environmental field width, stable and reliable operation, energy saving, it is contour for lifting data center or process requirements
Cooling by wind operation under long-term and limiting ambient temperature that the place of cooling uses is still needed under warm environment and low temperature environment
Reliability it is significant.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or be converted, all these modifications and variations should all belong to the guarantor of claims of the present invention
Shield scope.
Claims (3)
1. a kind of control method of high and low temperature environment cooling by wind, the high and low temperature environment cooling by wind, including refrigeration
System, air-conditioning secondary refrigerant system, axial flow blower cooling system and automatic control system；The refrigeration system includes compressor, cold
Condenser, vaporizer and pressure transducer；The air-conditioning secondary refrigerant system includes surface cooler, three-way valve, water pump, and surface cooler is arranged on
In condenser；The axial flow blower cooling system includes axial flow blower；The automatic control system include inflow temperature sensor,
Leaving water temperature sensors, environment temperature sensor, sensor data acquisition system and central control system；The a of the three-way valve
Interface is connected with one end of vaporizer, and the other end of vaporizer is connected with water pump one end, water pump other end connection air-conditioning duct system
System；The b interfaces connection air-conditioning refrigerating medium pipeline of three-way valve, the b interfaces of three-way valve are also connected with the arrival end of surface cooler, surface cooler
The port of export be connected with the c interfaces of three-way valve；Vaporizer is also connected with condenser one end by compressor, and the condenser other end is also
It is connected with vaporizer；The pressure transducer is arranged between vaporizer and condenser, and inflow temperature sensor is arranged on air-conditioning
On refrigerating medium pipeline, leaving water temperature sensors are arranged on the water pump other end；The inflow temperature sensor, leaving water temperature sensing
Device, environment temperature sensor and pressure transducer are all connected with sensor data acquisition system, sensor data acquisition system with
Central control system connects, and the compressor, three-way valve, water pump, axial flow blower are all connected with central control system respectively；It is described
Axial flow blower is connected with axial flow blower buncher, and axial flow blower buncher is connected with Axial-flow fan motor speed regulator, axle stream
Fan speed regulation machine and Axial-flow fan motor speed regulator are connected with central control system, control axial flow blower by central control system
Machine governor carries out speed governing to axial flow blower buncher, carries out speed governing to axial flow blower then；The vaporizer and pressure
Expansion valve is provided between sensor；Traffic protection device is connected with the air-conditioning refrigerating medium pipeline, inflow temperature sensor is put
Between the b interfaces of traffic protection device and three-way valve, traffic protection device is connected with sensor data acquisition system, air-conditioning refrigerating medium
High and low temperature environment cooling by wind is entered after the flow-control of traffic protection device characterized in that, specifically including following step
Suddenly：
Step A00：The turnover coolant-temperature gage of setting unit；
Step B00：Gather the pressure at expulsion of unit actual motion, pass in and out coolant-temperature gage, flow by sensor data acquisition system
To central control system, central control system calculates judgement to the feedback of the information of protector and ambient temperature automatically, obtains a result；
Step C00：Unlatching or shutdown of the central control system according to output control compressor, Axial-flow fan motor speed regulator are stepless
The condensation radiating air quantity of the rotating speed and axial flow blower of control Axial-flow fan motor, controls the unlatching or shutdown of water pump, controls threeway
The unlatching ratio of valve, adjusts the actual turnover coolant-temperature gage of unit in the range of setting Inlet and outlet water temperature value, so as to protect unit
Refrigerating operaton reliability in high temperature environments；
Wherein, the control to axial flow blower is as follows：
Step a10：The ambient temperature that set environment temperature sensor is detected is TEnvironment, ambient temperature temperature difference setting value 1 is Δ
tRing setting 1, the inflow temperature T that inflow temperature sensor is detectedWater inlet, the refrigeration system condensing pressure number that pressure transducer is detected
Value PDetection, pressure set points 1 are PSetting 1, pressure set points 2 are PSetting 2；
Step b10：Central control system judges whether compressor is opened, if compressor open, execution step c10 to step g10,
If compressor shutdown, execution step h10 is to step j10；
Step c10：Central control system judges PDetectionWith PSetting 1、PSetting 2Size, if PDetection≦PSetting 1, execution step d10, if PSetting 1
＜ PDetection≤PSetting 2, execution step e10, if PDetection>PSetting 2, execution step f10；
Step d10：Central control system control Axial-flow fan motor is closed, and axial flow blower is accordingly turned off；
Step e10：Central control system judges PDetectionReduce or rise, if PDetectionReduce, execution step f10, if PDetectionOn
Rise, execution step g10；
Step f10：The stepless rotating speed for reducing Axial-flow fan motor of central control system control axial flow blower machine governor, so as to
The rotating speed of axial flow blower is reduced, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, make safety of the pressure at expulsion in compressor
In the range of, it is ensured that compressor can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step g10：The stepless rotating speed for lifting Axial-flow fan motor of central control system control axial flow blower machine governor, so as to
The rotating speed of axial flow blower is lifted, the pressure at expulsion for controlling refrigeration system is higher than PSetting 1, make safety of the pressure at expulsion in compressor
In the range of, it is ensured that compressor can ensure high-low pressure pressure reduction, normal safe operation at low temperature；
Step h10：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, execution step
I10, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step j10；
Step i10：Central control system controls axial flow blower motor stopping, and axial flow blower is shut down therewith；
Step j10：It is maximum, axle that central control system controls the rotating speed of axial flow blower machine governor regulation Axial-flow fan motor
Flow fan presses maximum (top) speed operating therewith always.
2. the control method of high and low temperature environment cooling by wind according to claim 1, it is characterised in that to compressor
Control it is as follows：
Step a20：Leaving water temperature that leaving water temperature sensors detect is set as TWater outlet, water outlet temperature setting value is TWater outlet sets, temperature
Difference setting value 1 is Δ tSetting 1；
Step b20：Central control system judges TWater outletWith TWater outlet sets+ΔtSetting 1、TWater outlet sets-ΔtSetting 1Size, if TWater outlet＞ TWater outlet sets+
ΔtSetting 1, execution step c10, if TWater outlet≤TWater outlet sets-ΔtSetting 1, execution step d10, if TWater outlet sets-ΔtSetting 1<TWater outlet≦TWater outlet sets+
ΔtSetting 1, execution step e10；
Step c10：Compressor opens refrigeration cooling；
Step d10：Compressor is closed and stops refrigeration cooling；
Step e10：Compressor does not change standing state.
3. the control method of high and low temperature environment cooling by wind according to claim 1, it is characterised in that to three-way valve
Control it is as follows：
Step a30：The ambient temperature that set environment temperature sensor is detected is TEnvironment, ambient temperature temperature difference setting value 1 is Δ
tRing setting 1, the inflow temperature that inflow temperature sensor is detected is TWater inlet, the refrigeration system condensing pressure that pressure transducer is detected
Numerical value is PDetection, pressure set points 3 are PSetting 3, pressure set points 4 are PSetting 4, the ambient temperature that leaving water temperature sensors are detected
TWater outlet, water outlet temperature setting value TWater outlet sets, temperature difference setting value 1 is Δ tSetting 1, temperature difference setting value 2 is Δ tSetting 2, temperature difference setting value 3 is
ΔtSetting 3；
Step b30：Central control system judges TEnvironmentWith TWater inlet+ΔtRing setting 1Size, if TEnvironment＞ TWater inlet+ΔtRing setting 1, step c30
To step h30, if TEnvironment≤TWater inlet+ΔtRing setting 1, execution step i30 is to step m30；
Step c30：Central control system judges PDetectionWith PSetting 3、PSetting 4Size, if PDetection＜ PSetting 3, execution step d30, if PSetting 3
≤PDetection＜ PSetting 4, execution step e30 is to step g30, if PDetection＞ PSetting 4, execution step h30；
Step d30：The c-a passages of three-way valve are fully closed, b-a passage standard-sized sheets；
Step e30：Central control system judges PDetectionRise or decline, if PDetectionRise, execution step f30, if PDetectionUnder
Drop, execution step g30；
Step f30：The c-a passages ratio increase of three-way valve, b-a passage ratios are accordingly reduced；
Step g30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase；
Step h30：The c-a passage standard-sized sheets of three-way valve, b-a passages are fully closed；
Step i30:Central control system judges TWater outletWith TWater outlet sets-ΔtSetting 3、TWater outlet sets-ΔtSetting 2、TWater outlet sets+ΔtSetting 1With
TWater outlet sets-ΔtSetting 1Size, if TWater outlet sets+ΔtSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 1, execution step j30, if TWater outlet sets-Δ
tSetting 1≥TWater outlet＞ TWater outlet sets-ΔtSetting 2, execution step l30, if TWater outlet sets-ΔtSetting 2≥TWater outlet＞ TWater outlet sets-ΔtSetting 3, execution step
m30；
Step j30：The c-a passage standard-sized sheets of three-way valve, b-a passages are fully closed；
Step l30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase；
Step m30：The c-a passages ratio of three-way valve is reduced, and b-a passage ratios accordingly increase.
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| CN106322593B (en) * | 2015-07-03 | 2022-11-15 | 广州市华德工业有限公司 | Evaporative cooling type water chilling unit |
| CN106766310A (en) * | 2016-11-30 | 2017-05-31 | 珠海格力电器股份有限公司 | Refrigeration system, refrigeration control method and refrigeration control device |
| CN108548352B (en) * | 2018-04-20 | 2021-06-01 | 依米康科技集团股份有限公司 | Control method of machine room air conditioning system |
| CN110953739A (en) * | 2019-12-09 | 2020-04-03 | 珠海格力电器股份有限公司 | Control method of refrigeration system, refrigeration system and refrigerator |
| CN111412594A (en) * | 2020-03-11 | 2020-07-14 | 珠海格力电器股份有限公司 | Control method and device of water multi-connected system, storage medium and water multi-connected system |
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| JP2000240990A (en) * | 1999-02-24 | 2000-09-08 | Nishiyodo Kuchoki Kk | Ice heat storage system |
| CN2540587Y (en) * | 2002-04-23 | 2003-03-19 | 孙杰民 | Air-cooled double-temp. split air conditioner with water heating device |
| JP4338018B2 (en) * | 2003-05-16 | 2009-09-30 | 三建設備工業株式会社 | Cooling system |
| CN102589114A (en) * | 2012-01-12 | 2012-07-18 | 广东申菱空调设备有限公司 | Air-cooled water chiller with natural cooling function and control method for water chiller |
| CN203615638U (en) * | 2013-12-06 | 2014-05-28 | 南京恒标斯瑞冷冻机械制造有限公司 | High-precision industrial water chilling unit |
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Address after: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Applicant after: GUANGDONG SHENLING AIR-CONDITIONING EQUIPMENT CO., LTD. Address before: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Applicant before: Guangdong Shenling Air Conditioning Equipment Co., Ltd. |
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