CN108006870A - A kind of compound computer-room air conditioning system of air pump and its control method - Google Patents
A kind of compound computer-room air conditioning system of air pump and its control method Download PDFInfo
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- CN108006870A CN108006870A CN201810040780.0A CN201810040780A CN108006870A CN 108006870 A CN108006870 A CN 108006870A CN 201810040780 A CN201810040780 A CN 201810040780A CN 108006870 A CN108006870 A CN 108006870A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of compound computer-room air conditioning system of air pump, cold source system, main control unit and the temperature collecting cell formed including compressor, air pump, oil eliminator, condenser, flow apparatus, evaporator and gas-liquid separator, main control unit are connected with cold source system signal；Temperature collecting cell is used to gather outdoor temperature and indoor temperature and be connected with main control unit signal, makes operating status of the main control unit according to indoor and outdoor temperature control compressor, air pump, the wind turbine of condenser and flow apparatus.The invention also discloses a kind of control method of the compound computer-room air conditioning system of air pump, can be according to outdoor temperature, adjust compressor, the operating status of air pump, the on off state of throttling arrangement and the operating status of condenser, cold source system is set to be switched to kind of refrigeration cycle pattern or gas pump cycle pattern respectively, realize and substitute compression kind of refrigeration cycle pattern using gas pump cycle pattern using outdoor natural cooling source in low temperature season, can maximumlly utilize natural cooling source.
Description
Technical field
The present invention relates to a kind of compound computer-room air conditioning system of air pump and its control method.
Background technology
The fast development of information industry and digital Construction, has promoted computer room, the quantity of base station, and construction scale quickly increases
Long, computer room, the energy consumption of base station air conditioner account for the 40%~50% of its total energy consumption according to statistics.Computer room, the sensible heat load of base station are than big, and one
The four seasons in year need to continuously be run, and side design temperature is less than the season of outside temperature indoors, and conventional air-conditioning system still needs to continue
Compression-type refrigerating system is run, refrigeration system work efficiency is low and easily breaks down, if indoor/outdoor temperature-difference low cost can be utilized
Conveying heat provides cold for indoor, will greatly reduce the energy consumption and operating cost of air-conditioning system.In the high warm season such as summer
Section is by using the cold achievable refrigeration system Effec-tive Function in ground.Significantly lifting system efficiency.It is room using outdoor Cryogenic air
The method that inner side provides cold has obtained the concern of scholar in the industry and engineers and technicians, and engineering skill is unfolded in different forms
Art research, the fresh air system such as used at present, in addition with various forms of gas-gas, air-water heat-exchange system, and application
The composite air conditioner of hot pipe technique.
A kind of compound air conditioner in machine room of air-cooled air pump is disclosed in Chinese invention patent application CN201010528027.X
System, the system have two kinds of operating modes of compression-type refrigeration and heat pipe circularly cooling.Freeze mould when outdoor temperature >=20 DEG C
Formula works, and participates in the first refrigeration working medium of kind of refrigeration cycle evaporation endothermic in evaporative condenser, cooling and the refrigeration work of condensation second
Matter；As 20 DEG C of outdoor temperature ＜, system is converted to heat pipe circularly cooling pattern, using outdoor Cryogenic air to the second refrigeration work
Matter is cooled down and condensed, and compression-type refrigeration circulation is stopped, so as to effectively reduce annual air conditioning energy consumption.This system is utilizing
Outdoor Cryogenic air cold and ensure to compensate for the deficiency of first two system, but compression-type refrigeration and heat in terms of indoor air quality
Two kinds of operating modes of pipe circularly cooling switch in a certain temperature spot, and can the refrigerating capacity of system steadily be connected and reliably working etc.,
It is worth considering；The relatively low cold for being unfavorable for maximally utilizing outdoor Cryogenic air of ceiling temperature of heat pipe cycle operation at the same time.
Utility model patent CN01278831.7 discloses a kind of energy-saving refrigeration cycling devices with circulating pump, in heat pipe
Be conducive to improve the work efficiency of heat pipe circulation in the circulatory system using circulating pump, to condensation when also simplify hot-pipe system installation
The requirement of device, reservoir and evaporator relative position, but CN01278831.7 is maximally utilizing the cold of outdoor Cryogenic air
The deficiency of aspect is similar with CN201010528027.X, i.e., the ceiling temperature of heat pipe cycle operation relatively low could must be followed with refrigeration
Ring is steadily connected.
Patent of invention ZL201210037332.8 and patent of invention ZL201210037082.8 propose a kind of with recombination region
Heat pipe combined computer-room air conditioning system, is steamed using power type separate-type heat pipe system and vapor compression type refrigerating system in intermediate condensation
It is for composite to send out device (evaporation coil) place, refrigeration system compensates cold in transition season for hot-pipe system, widens hot-pipe system work
Make warm area.But patent of invention ZL201210037082.8 provided in cooling mode using secondary heat exchange mode for end it is cold
Amount, reduces cooling system efficiency；And ZL201210037332.8 can go out when refrigeration mode and heat pipe pattern both of which switch
Existing system cold output is unstable, excessive unstable state.
The content of the invention
The defects of it is an object of the invention to overcome the prior art and natural cooling source can maximumlly be utilized by providing one kind,
The compound computer-room air conditioning system of air pump and its control method of heat pipe circulation are infinitely constructed according to the indoor and outdoor temperature difference.
Realizing a kind of technical solution of the object of the invention is：A kind of compound computer-room air conditioning system of air pump, including low-temperature receiver system
System, main control unit and temperature collecting cell；Wherein,
Cold source system includes compressor, air pump, oil eliminator, condenser, flow apparatus, evaporator and gas-liquid separation
Device；
The compressor has the compression mechanisms of exhaust outlet and air entry into each compressor by one or more parallel connections
Exhaust outlet connect the import of first check valve respectively；
The air pump is made of one or more air pumps with exhaust outlet and air entry in parallel, the exhaust of each air pump
Mouth connects the import of second check valve respectively；
The entrance of the oil eliminator is connected with the outlet of first check valve and the second check valve, oil eliminator
Oil return opening is connected by oil return capillary with the air entry of compressor and the air entry of air pump；
The entrance of the condenser is connected with the outlet of the oil eliminator；
The entrance of the flow apparatus is connected with the outlet of the condenser, which there is wide cut to adjust flow
Function；
The entrance of the evaporator is connected with the outlet of the flow apparatus；
The entrance of the gas-liquid separator is connected with the outlet of the evaporator.
The main control unit is connected with cold source system signal；
The temperature collecting cell is used to gather outdoor temperature and indoor temperature and be connected with the main control unit signal,
Make the operation shape of main control unit compressor, air pump, the wind turbine of condenser and flow apparatus according to the temperature control of indoor and outdoor
State.
The compound computer-room air conditioning system of above-mentioned air pump, wherein, the cold source system further include be connected in turn it is described cold
Reservoir, device for drying and filtering and liquid-sighting glass between condenser and flow apparatus.
The compound computer-room air conditioning system of above-mentioned air pump, wherein, the condenser for air-cooled condenser, water-cooled condenser or
Evaporative condenser.
The compound computer-room air conditioning system of above-mentioned air pump, wherein, the flow apparatus is Single Electron expansion valve, or is two
A electric expansion valve is in parallel, or in parallel with solenoid valve for electric expansion valve, or be electric flow control valve and electric expansion valve simultaneously
Connection.
Realizing the another technical solution of the object of the invention is：A kind of compound machine of air pump based on described in claim 1
The control method of room air-conditioning system, including：
Outdoor temperature T is divided into two functional areas：Refrigeration area and air pump area；
The refrigeration area is：Outdoor temperature T ＞ T0；The air pump area is：Outdoor temperature T≤T0；
Wherein, T0 should be set according to specific operating mode；
For functional areas different residing for outdoor temperature T, the corresponding cold source system that switches runs on kind of refrigeration cycle pattern or gas
Pump circulation pattern：
The kind of refrigeration cycle pattern of the corresponding refrigeration area：By compressor, the first check valve, oil eliminator, condenser, flow
Device, evaporator and gas-liquid separator form refrigeration working medium circuit；
The gas pump cycle pattern in the corresponding air pump area：By air pump, the second check valve, oil eliminator, condenser, flow dress
Put, evaporator and gas-liquid separator form refrigeration working medium circuit.
The control method of the compound computer-room air conditioning system of above-mentioned air pump, wherein, when cold source system runs on kind of refrigeration cycle
During pattern, the flow apparatus carries out reducing pressure by regulating flow for throttling arrangement to refrigeration working medium, according to indoor load size and outdoor
Temperature T determines that the rotating speed of the wind turbine of the rotating speed of the compressor, the aperture of flow apparatus and condenser realizes the accurate of cold
Adjust.
The control method of the compound computer-room air conditioning system of above-mentioned air pump, wherein, when cold source system runs on gas pump cycle
During pattern, the flow apparatus is in standard-sized sheet, according to indoor load size and outdoor temperature T determine the air pump rotating speed and
The rotating speed of the wind turbine of condenser realizes the accurate adjusting of cold.
The control method of the compound computer-room air conditioning system of above-mentioned air pump, wherein, the cold source system running mode switching
When, switched over using temperature gap method and delay control method, that is, set outdoor temperature deviation delta T0 and hold time
Δt；
As outdoor temperature T0+ Δs T0 >=T >=T0- Δ T0, then the cold source system maintains present mode of operation；
As outdoor temperature T ＞ T0+ Δ T0, and hold time as Δ t, then the cold source system is switched to kind of refrigeration cycle mould
Formula；
As outdoor temperature T≤T0- Δ T0, and hold time as Δ t, then the cold source system is switched to gas pump cycle mould
Formula；
Temperature deviation Δ T0 and the Δ t that holds time should be set as the case may be.
The compound computer-room air conditioning system of air pump and its control mode of the present invention, can adjust compression according to outdoor temperature
The operating status of machine, air pump, the on off state of throttling arrangement and the operating status of condenser, make cold source system be switched to respectively
Kind of refrigeration cycle pattern or gas pump cycle pattern, are realized and are substituted in low temperature season using outdoor natural cooling source using gas pump cycle pattern
Kind of refrigeration cycle pattern is compressed, the unit cost of existing compound air-conditioning system is reduced, simplifies system structure, reduce maintenance
Difficulty；Can efficiently use at the same time round the clock, transition season and the outdoor natural cooling source in winter, operation energy consumption is greatly lowered, has
Excellent effects of energy saving and emission reduction.
Brief description of the drawings
Fig. 1 is a kind of structure principle chart of the compound computer-room air conditioning system of air pump of the present invention；
Fig. 2 is another structure principle chart of the compound computer-room air conditioning system of air pump of the present invention；
Fig. 3 is the schematic diagram of the control method of the compound computer-room air conditioning system of air pump of the present invention；
Fig. 4 is that the compound computer-room air conditioning system of air pump of the present invention runs on the schematic diagram of kind of refrigeration cycle pattern；
Fig. 5 is that the compound computer-room air conditioning system of air pump of the present invention runs on the pressure-enthalpy chart of kind of refrigeration cycle pattern；
Fig. 6 is that the compound computer-room air conditioning system of air pump of the present invention runs on the schematic diagram of gas pump cycle pattern；
Fig. 7 is that the compound computer-room air conditioning system of air pump of the present invention runs on the pressure-enthalpy chart of gas pump cycle pattern.
Embodiment
The present invention will be further described with reference to the accompanying drawings.
Please refer to Fig.1 to Fig. 7, the compound computer-room air conditioning system of a kind of air pump of the invention, including cold source system, master control list
Member and temperature control device, wherein：
Cold source system includes compressor 1, air pump 2, oil eliminator 4, condenser 5, flow apparatus, evaporator 7 and gas-liquid point
From device 8, wherein：
Compressor 1 is by one or more compression mechanisms with exhaust outlet and air entry in parallel into compressor 1 can root
Selected according to specific operating mode internal or external；The exhaust outlet of each compressor 1 connects the import of first check valve 31 respectively；
Air pump 2 is made of one or more air pumps with exhaust outlet and air entry in parallel, and air pump 2 can be according to specific
Operating mode selection is internal or external；The exhaust outlet of each air pump 2 connects the import of second check valve 32 respectively；
The entrance of oil eliminator 4 is connected with the outlet of the first check valve 31 and the second check valve 32, and oil eliminator 4 returns
Hydraulic fluid port is connected by oil return capillary 40 with the air entry of compressor 1 and the air entry of air pump 2；
The entrance of condenser 5 is connected with the outlet of oil eliminator 4；Condenser 5 for air-cooled condenser, water-cooled condenser or
Evaporative condenser；
The entrance of flow apparatus 6 is connected with the outlet of condenser 5, which there is wide cut to adjust traffic engineering capability,
And be Single Electron expansion valve, or be two electric expansion valve parallel connections, or it is in parallel with solenoid valve for electric expansion valve, or be electronic
Flow control valve is in parallel with electric expansion valve；The flow apparatus 6 of the present embodiment is Single Electron expansion valve (see Fig. 1)；
The entrance of evaporator 7 is connected with the outlet of flow apparatus 6；
The entrance of gas-liquid separator 8 is connected with the outlet of evaporator 7；
Main control unit difference signal connection cold source system and temperature collecting cell；
Temperature collecting cell is used to gather outdoor temperature and indoor temperature, makes main control unit according to indoor and outdoor temperature control
Compressor 1 processed, air pump 2, the operating status of the wind turbine of condenser 5 and flow apparatus 6.
In another embodiment, flow apparatus 6 is electric expansion valve 62 in parallel and solenoid valve 61 (see Fig. 2).
A kind of compound computer-room air conditioning system of air pump of the present invention, can efficiently use outdoor cold source, energy-efficient, can
By property height.
The control method based on the compound computer-room air conditioning system of above-mentioned air pump of the present invention, for switching the fortune of cold source system
Row mode, the accuracy controlling of refrigerating capacity and system oil return, control method are specifically：
Outdoor temperature T is divided into two functional areas：Refrigeration area and air pump area；
Refrigeration area is：Outdoor temperature T ＞ T0；
Air pump area is：Outdoor temperature T≤T0；
Wherein, T0 should be set according to specific operating mode；
For functional areas different residing for outdoor temperature T, the corresponding cold source system that switches runs on kind of refrigeration cycle pattern or gas
Pump circulation pattern.
The corresponding kind of refrigeration cycle pattern of refrigeration area：By compressor 1, the first check valve 31, oil eliminator 4, condenser 5, stream
Measure device 6, evaporator 7 and gas-liquid separator 8 and form refrigeration working medium circuit, flow apparatus 6 is throttling arrangement at this time, to refrigeration
Working medium carries out reducing pressure by regulating flow, determines that the rotating speed of compressor 1, flow apparatus 6 are opened according to indoor load size and outdoor temperature T
The rotating speed of the wind turbine of degree and condenser 5 realizes the accurate adjusting of cold；
The corresponding gas pump cycle pattern in air pump area：By air pump 2, the second check valve 32, oil eliminator 4, condenser 5, flow
Device 6, evaporator 7 and gas-liquid separator 8 form refrigeration working medium circuit, and flow apparatus 6 is full-gear at this time, without section
Stream decompression, fully achieves the circulation of gas phase heat pipe, and the rotating speed of air pump 2 and cold is determined according to indoor load size and outdoor temperature T
The rotating speed of the wind turbine of condenser 5 realizes accurately adjusting (see Fig. 3) for cold.
When outdoor temperature meets T ＞ T0, cold source system operation kind of refrigeration cycle pattern, the air pump 2 of main control unit control at this time
It is stopped, by compressor 1, the first check valve 31, oil eliminator 4, condenser 5, throttling arrangement 6, evaporator 7, gas-liquid separation
Device 8 forms refrigeration working medium circuit, and the flow apparatus 6 of main control unit control at this time is throttling arrangement, i.e., is worked by electric expansion valve 62,
Solenoid valve 61 is closed, and rotating speed, the control electric expansion valve 62 of compressor 1 are determined according to indoor load size and outdoor temperature T
Aperture and condenser 5 wind turbine rotating speed, realize the accurate adjusting of cold.Low-temp low-pressure refrigeration working medium steam is through compressor
1 boil down to high pressure high temperature vapor, by the working medium that 5 exothermic condensation postcooling of condenser is liquid, into throttling arrangement 6, passes through
The reducing pressure by regulating flow of electric expansion valve 62, then heat absorption evaporation, the refrigeration working medium steam of low-temp low-pressure pass through gas-liquid in the evaporator 7
Separator 8 returns to the air entry of compressor 1, completes kind of refrigeration cycle (see Fig. 4)；As shown in figure 5, the pressure enthalpy for kind of refrigeration cycle pattern
Figure, wherein 1-2 be compression process, 2-3 be condensation process, and 3-4 be throttling process, and 4-1 is evaporation endothermic process.Working medium from
After driving evaporator 7, into compressor 1,1-2 compression processes are carried out.The mixture of refrigeration working medium and lubricating oil composition enters oil
From device 4, wherein most lubricating oil returns to compressor 1 by oil return capillary 40.Due to the effect of the second check valve 32, compression
Machine 1 is discharged steam and will not be flowed back in air pump 2.
When outdoor temperature is higher, 1 mechanical refrigeration of compressor, plays highly effective refrigeration effect.
When outdoor temperature meets T≤T0, to realize energy-saving effect, cold source system operation gas pump cycle pattern, leads at this time
Control unit control compressor 1 is stopped, by air pump 2, the second check valve 32, oil eliminator 4, condenser 5, throttling arrangement 6, steaming
Send out device 7 and gas-liquid separator 8 forms gas refrigeration working medium circuit, directly evaporate realization refrigeration in evaporator 7 using refrigeration working medium
(see Fig. 6)；The flow apparatus 6 of main control unit control at this time is shown in a fully open operation, i.e., is worked by solenoid valve 61, electric expansion valve 62 closes
Close, and the rotating speed of the rotating speed of air pump 2 and the wind turbine of condenser 5 is determined according to indoor load size and outdoor temperature T, realize cold
The accurate adjusting of amount.As shown in fig. 7, the pressure-enthalpy chart for gas pump cycle pattern.
For 38 DEG C of constant temperature machine rooms, T0 is set as 12 DEG C, when T≤12 DEG C, cold source system runs on gas pump cycle pattern,
During T ＞ 12, cold source system runs on kind of refrigeration cycle pattern.
During cold source system running mode switching, temperature gap method and delay control method can also be used to switch over,
Set the outdoor temperature deviation delta T0 and Δ t that holds time；
As outdoor temperature T0+ Δs T0 >=T >=T0- Δ T0, then cold source system maintains present mode of operation；
As outdoor temperature T >=T0+ Δ T0, and hold time as Δ t, then cold source system is switched to kind of refrigeration cycle pattern；
As outdoor temperature T≤T0- Δ T0, and hold time as Δ t, then cold source system is switched to gas pump cycle pattern；
Temperature deviation Δ T0 and the Δ t that holds time should be set as the case may be.
For 38 DEG C of constant temperature machine room, if setting T0 as 12 DEG C, Δ T0 be 2 DEG C, Δ t be 5 minutes, when outdoor temperature T≤
At 10 DEG C, and maintain after five minutes, cold source system runs on gas pump cycle pattern；When outdoor temperature T >=14 DEG C, and maintain
After five minutes, cold source system runs on kind of refrigeration cycle pattern.
Above example is used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all equivalent
Technical solution should also belong to scope of the invention, should be limited by each claim.
Claims (8)
1. a kind of compound computer-room air conditioning system of air pump, including cold source system, main control unit and temperature collecting cell, its feature exist
In,
Cold source system includes compressor, air pump, oil eliminator, condenser, flow apparatus, evaporator and gas-liquid separator；Its
In,
The compressor has the compression mechanisms of exhaust outlet and air entry into the row of each compressor by one or more parallel connections
Gas port connects the import of first check valve respectively；
The air pump is made of one or more air pumps with exhaust outlet and air entry in parallel, the exhaust outlet point of each air pump
Not Lian Jie second check valve import；
The entrance of the oil eliminator is connected with the outlet of first check valve and the second check valve, the oil return of oil eliminator
Mouth is connected by oil return capillary with the air entry of compressor and the air entry of air pump；
The entrance of the condenser is connected with the outlet of the oil eliminator；
The entrance of the flow apparatus is connected with the outlet of the condenser, which there is wide cut to adjust flow work(
Energy；
The entrance of the evaporator is connected with the outlet of the flow apparatus；
The entrance of the gas-liquid separator is connected with the outlet of the evaporator.
The main control unit is connected with cold source system signal；
The temperature collecting cell is used to gather outdoor temperature and indoor temperature and be connected with the main control unit signal, makes master
Control the operating status of unit compressor, air pump, the wind turbine of condenser and flow apparatus according to the temperature control of indoor and outdoor.
2. the compound computer-room air conditioning system of air pump according to claim 1, it is characterised in that the cold source system further includes
Reservoir, device for drying and filtering and the liquid-sighting glass being connected in turn between the condenser and flow apparatus.
3. the compound computer-room air conditioning system of air pump according to claim 1 or 2, it is characterised in that the condenser is wind
Cool condenser, water-cooled condenser or evaporative condenser.
4. the compound computer-room air conditioning system of air pump according to claim 1, it is characterised in that the flow apparatus is single
Electric expansion valve, or be two electric expansion valve parallel connections, or it is in parallel with solenoid valve for electric expansion valve, or adjusted for electric flow
Valve is in parallel with electric expansion valve.
A kind of 5. control method of the compound computer-room air conditioning system of air pump based on described in claim 1, it is characterised in that
Outdoor temperature T is divided into two functional areas：Refrigeration area and air pump area；
The refrigeration area is：Outdoor temperature T ＞ T0；The air pump area is：Outdoor temperature T≤T0；
Wherein, T0 should be set according to specific operating mode；
For functional areas different residing for outdoor temperature T, corresponding switching cold source system runs on kind of refrigeration cycle pattern or air pump follows
Ring mode：
The kind of refrigeration cycle pattern of the corresponding refrigeration area：By compressor, the first check valve, oil eliminator, condenser, flow dress
Put, evaporator and gas-liquid separator form refrigeration working medium circuit；
The gas pump cycle pattern in the corresponding air pump area：By air pump, the second check valve, oil eliminator, condenser, flow apparatus,
Evaporator and gas-liquid separator form refrigeration working medium circuit.
6. the control method of the compound computer-room air conditioning system of air pump according to claim 5, it is characterised in that when low-temperature receiver system
When system runs on kind of refrigeration cycle pattern, the flow apparatus carries out reducing pressure by regulating flow for throttling arrangement to refrigeration working medium, according to interior
Payload and outdoor temperature T determine turning for the wind turbine of the rotating speed of the compressor, the aperture of flow apparatus and condenser
Speed realizes the accurate adjusting of cold.
7. the control method of the compound computer-room air conditioning system of air pump according to claim 5, it is characterised in that when low-temperature receiver system
When system runs on gas pump cycle pattern, the flow apparatus is in standard-sized sheet, is determined according to indoor load size and outdoor temperature T
The rotating speed of the rotating speed of the air pump and the wind turbine of condenser realizes the accurate adjusting of cold.
8. the control method of the compound computer-room air conditioning system of air pump according to claim 5, it is characterised in that the low-temperature receiver
During system running mode switching, switched over using temperature gap method and delay control method, that is, set outdoor temperature deviation
The Δ T0 and Δ t that holds time；
As outdoor temperature T0+ Δs T0 >=T >=T0- Δ T0, then the cold source system maintains present mode of operation；
As outdoor temperature T ＞ T0+ Δ T0, and hold time as Δ t, then the cold source system is switched to kind of refrigeration cycle pattern；
As outdoor temperature T≤T0- Δ T0, and hold time as Δ t, then the cold source system is switched to gas pump cycle pattern；
Temperature deviation Δ T0 and the Δ t that holds time should be set as the case may be.
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| CN201810040780.0A CN108006870A (en) | 2018-01-16 | 2018-01-16 | A kind of compound computer-room air conditioning system of air pump and its control method |
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| CN112351651A (en) * | 2020-10-30 | 2021-02-09 | 中国移动通信集团设计院有限公司 | Condenser, air conditioner special for air cooling machine room and control method of air conditioner special for air cooling machine room |
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| CN113531862A (en) * | 2021-06-30 | 2021-10-22 | 苏州英维克温控技术有限公司 | Variable-frequency fluorine pump air conditioner control method and device, electronic equipment and medium |
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| CN114165893A (en) * | 2021-11-30 | 2022-03-11 | 珠海格力电器股份有限公司 | Control device and method of machine room refrigerating system and machine room refrigerating system |
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| CN114165893A (en) * | 2021-11-30 | 2022-03-11 | 珠海格力电器股份有限公司 | Control device and method of machine room refrigerating system and machine room refrigerating system |
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| CN114251858A (en) * | 2021-12-20 | 2022-03-29 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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