CN109751799A - Composite type cold heat source air conditioning system and temperature control method - Google Patents

Composite type cold heat source air conditioning system and temperature control method Download PDF

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Publication number
CN109751799A
CN109751799A CN201811544070.8A CN201811544070A CN109751799A CN 109751799 A CN109751799 A CN 109751799A CN 201811544070 A CN201811544070 A CN 201811544070A CN 109751799 A CN109751799 A CN 109751799A
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China
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temperature
composite type
hot
air conditioning
heat source
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CN201811544070.8A
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Inventor
周智勇
赵鹏
汪建
赖桃辉
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201811544070.8A priority Critical patent/CN109751799A/en
Publication of CN109751799A publication Critical patent/CN109751799A/en
Pending legal-status Critical Current

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Abstract

The present invention provides a kind of composite type cold heat source air conditioning system, for regulating and controlling temperature in computer room, comprising: refrigeration system is used for circularly cooling;Hot-pipe system, in the heat exchange and/or computer room for high temperature air in computer room and outdoor Cryogenic air in high temperature air and refrigeration system low temperature refrigerant heat exchange.Composite type cold heat source air conditioning system of the invention, using combined refrigeration system and hot-pipe system, it is big to solve the problems, such as that computer room temperature-controlling system consumes energy, make full use of outdoor natural cooling source, shorten the runing time and power consumption of refrigeration system, energy conservation and environmental protection can effectively improve the energy use efficiency of computer room.

Description

Composite type cold heat source air conditioning system and temperature control method
Technical field
The invention belongs to building environment control technology fields, and in particular to a kind of composite type cold heat source air conditioning system and temperature control Method.
Background technique
Internet+, the development of Internet of Things, wisdom city pushed the development of internet, the machine as Internet basic hardware The quantity construction scale rapid growth in room, base station needs suitable warm and humid in order to ensure the normal operation of these electronic equipments Degree, clean closed air conditioner surroundings, the relevant criterion of industry require the operating ambient temperature control of data center machine room equipment to exist 23 DEG C or so, not more than 28 DEG C, it is therefore necessary to which air conditioner in machine room whole year is operated in into cooling condition.And air conditioning electricity accounts for about this The 40%~60% of class equipment total electricity consumption, improves the efficiency of energy utilization of air-conditioning system, can greatly save its electricity consumption, from And save energy consumption.
It, can phase if can be rationally computer room cooling using natural cooling source in outdoor temperature lower season, such as winter The runing time for the shortening air-conditioning compressor answered, saves a large amount of electric energy.
In outdoor temperature higher season, such as summer, if can collect in computer room heat to neighbouring family, office, Even swimming pool heating, by Multi-class propagation, can be improved the utilization efficiency of the energy.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of composite type cold heat source air conditioning system, energy consumption is reduced, Improve the energy use efficiency of computer room.
To solve the above-mentioned problems, the present invention provides a kind of composite type cold heat source air conditioning system, warm in computer room for regulating and controlling Degree, comprising: refrigeration system is used for circularly cooling;Hot-pipe system, the heat for high temperature air in computer room and outdoor Cryogenic air are handed over Change and/or computer room in high temperature air and refrigeration system low temperature refrigerant heat exchange.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, the hot-pipe system is exchanged with the refrigeration system by heat exchanger components progress heat.
Preferably, heat exchanger components are low pressure recycle bucket, and hot-pipe system is connected to refrigeration system by the way that low pressure recycle bucket is compound.
Preferably, the hot-pipe system entrance of hot-pipe system is set to low pressure recycle bucket bottom, for sucking in low pressure recycle bucket The liquid refrigerants of bottom;The hot-pipe system outlet of hot-pipe system is set to the bottom of low pressure recycle bucket, for by refrigerant return to low Press circulation barrel bottom.
Preferably, the top of low pressure recycle bucket is arranged in the refrigeration system entrance of refrigeration system, for sucking low pressure recycle The gaseous coolant of bucket internal upper part;Bottom is arranged in low pressure recycle bucket in the refrigeration system outlet of refrigeration system, for returning refrigerant It flow to bottom in low pressure recycle bucket.
Preferably, hot-pipe system includes refrigerated medium pump, evaporator, the air-cooled condenser being connected in series along refrigerant flow direction; Evaporator is arranged in computer room, the heat exchange for high temperature air in low temperature refrigerant in hot-pipe system and computer room;Air-cooled condenser Heat exchange of the setting in outdoor, for hot-pipe system high temperature refrigerant and outdoor Cryogenic air.
Preferably, the outlet end of evaporator branches out the first branch and second branch, and air-cooled condenser is arranged at first On the road, second branch is equipped with the first solenoid valve of control second branch on-off.
Preferably, hot-pipe system further includes check valve, and refrigerated medium pump and evaporator is arranged in check valve in series Between.
Preferably, refrigeration system includes compressor, the condensing unit being connected in series along refrigerant flow direction.
Preferably, condensing unit is water-cooled condenser, cooling water and refrigeration system high temperature refrigerant heat in water-cooled condenser Exchange.
Preferably, refrigeration system further includes oil eliminator, oil eliminator be connected in series to setting in compressor and It is additionally provided with bypass oil return branch between water-cooled condenser, between oil eliminator and compressor, bypasses oil return branch for oil eliminator The lubricating oil separated and collected is transmitted back to compressor.
Preferably, bypass oil return branch is equipped with second solenoid valve, for controlling the on-off of bypass oil return branch.
Preferably, second solenoid valve is automatically opened in the accumulative operation setting time of compressor, and bypass oil return branch will moisten Lubricating oil is transmitted back to compressor.
Preferably, refrigeration system further includes electric expansion valve, electric expansion valve be arranged in water-cooled condenser along refrigerant stream The downstream in dynamic direction.
Preferably, composite type cold heat source air conditioning system further includes temperature sensing device, and temperature sensing device is for measuring from low pressure recycle Bucket flows into the temperature of the refrigerant of hot-pipe system.
Preferably, temperature sensing device is arranged on low pressure recycle bucket.
Preferably, the heat exchanger components are plate heat exchanger, and the hot-pipe system is changed with the refrigeration system by board-like Hot device carries out heat exchange.
When outdoor temperature is lower than temperature in computer room, and the temperature difference is greater than Δ T1, refrigeration system is shut down, hot-pipe system booting, Hot-pipe system carries out the heat exchange of high temperature air and outdoor Cryogenic air in computer room, controls temperature in computer room;
It is higher than temperature in computer room when outdoor temperature is higher than room temperature, or when outdoor temperature is lower than temperature in computer room, and When the temperature difference is greater than less than Δ T2, hot-pipe system, refrigeration system are opened simultaneously, refrigeration system circularly cooling, and hot-pipe system carries out machine The heat exchange of high temperature air and low temperature refrigerant in refrigeration system in room;
When outdoor temperature with lower than temperature in computer room, and the temperature difference be less than [Δ T2, Δ T1], when being greater than Δ T2, heat pipe system System is opened, and intermittence is opened when the temperature of refrigeration system refrigerant in hot-pipe system exceeds setting value;Wherein Δ T1 > Δ T2 sheet It the purpose of invention and solves its technical problem also following technical measures can be used to further realize.
Preferably, second solenoid valve is automatically opened in the accumulative operation setting time of compressor, bypass oil return branch conducting, Lubricating oil is transmitted back to compressor.
Preferably, Δ T1=15~20 DEG C.
Preferably, Δ T2=3~14 DEG C
Composite type cold heat source air conditioning system and temperature control method provided by the invention at least have it is following the utility model has the advantages that
Composite type cold heat source air conditioning system of the invention solves computer room using combined refrigeration system and hot-pipe system Temperature-controlling system consumes energy big problem, makes full use of outdoor natural cooling source, shortens the runing time and power consumption of refrigeration system, Energy conservation and environmental protection can effectively improve the energy use efficiency of computer room.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the composite type cold heat source air conditioning system of the embodiment of the present invention.
Appended drawing reference indicates are as follows:
1, refrigerated medium pump;2, temperature sensing device;3, check valve;4, evaporator;5, the first solenoid valve;6, air-cooled condenser;7, Low pressure recycle bucket;8, compressor;9, second solenoid valve;10, oil eliminator;11, water-cooled condenser;12, electric expansion valve;13, Refrigeration system entrance;14, hot-pipe system entrance;15, hot-pipe system exports;16, refrigeration system exports;17, the first branch;18, Second branch;19, oil return branch is bypassed.
Specific embodiment
In conjunction with shown in Figure 1, the embodiment of the invention provides a kind of composite type cold heat source air conditioning systems, for regulating and controlling machine Temperature in room, comprising: refrigeration system is used for circularly cooling;Hot-pipe system, for high temperature air in computer room and outdoor Cryogenic air Heat exchange and/or computer room in high temperature air and refrigeration system low temperature refrigerant heat exchange.
Composite type cold heat source air conditioning system of the invention, using the refrigeration system and hot-pipe system of combined type, instead of tradition Consume energy biggish computer room refrigerated air-conditioning system, and under the premise of retaining indispensable refrigerating function, heat-exchange system can also make full use of room Outer natural cooling source, shortens the runing time and power consumption of refrigeration system, energy conservation and environmental protection, and the energy for effectively increasing computer room makes Use efficiency.
The hot-pipe system carries out heat by heat exchanger components with the refrigeration system and exchanges.
Preferably, hot-pipe system is connected to refrigeration system by the way that low pressure recycle bucket 7 is compound one kind as the present embodiment.Heat pipe The hot-pipe system entrance 14 of system is set to the bottom of low pressure recycle bucket 7, and the liquid for sucking bottom in low pressure recycle bucket 7 is cold Matchmaker;The hot-pipe system outlet 15 of hot-pipe system is set to the bottom of low pressure recycle bucket 7, is used for refrigerant return to low pressure recycle bucket 7 Bottom.
The liquid refrigerants flowed in hot-pipe system carries out heat exchange with high temperature air in computer room first, and heating gasification is high temperature Then gaseous coolant carries out heat exchange with outdoor natural cooling source, it is liquid refrigerants that cooling liquefaction, which returns, passes through low pressure recycle bucket 7 It is of short duration resident, it directly again flows into hot-pipe system and is recycled next time.
The top of low pressure recycle bucket 7 is arranged in the refrigeration system entrance 13 of refrigeration system, for sucking in low pressure recycle bucket 7 The cryogenic gaseous refrigerant on top;Bottom is arranged in low pressure recycle bucket 7 in the refrigeration system outlet 16 of refrigeration system, is used for low temperature Low pressure refrigerant is back to bottom in low pressure recycle bucket 7.
Gas-liquid separation can occur for the refrigerant in low pressure recycle bucket 7, top and lower part, and liquid refrigerants is distributed in low pressure recycle bucket 7 bottoms, gaseous coolant are full of the top of low pressure recycle bucket 7, and after refrigeration system sucks gaseous coolant circularly cooling, defeated time liquid is cold Matchmaker uses for cooling down in computer room.
The hot-pipe system and refrigeration system of the present embodiment, cross in low pressure recycle bucket 7, share one group of refrigerant, refrigerant can With the interaction flowing in hot-pipe system and refrigeration system two systems, the low temperature liquid refrigerant of refrigeration system output can directly pass through Hot-pipe system carries out heat with computer room and exchanges, and is not required to be individually for refrigeration system setting heat exchange element, improves the collection of air-conditioning system It becomes second nature and equipment service efficiency.
As a kind of preferred embodiment of the present embodiment, hot-pipe system includes the refrigerated medium pump being connected in series along refrigerant flow direction 1, evaporator 4, air-cooled condenser 6;Evaporator 4 is arranged in computer room, for high temperature in low temperature refrigerant in hot-pipe system and computer room The heat exchange of air;The setting of air-cooled condenser 6 is handed in outdoor, the heat for hot-pipe system high temperature refrigerant and outdoor Cryogenic air It changes.
The outlet end of evaporator 4 branches out the first branch 17 and second branch 18, and air-cooled condenser 6 is arranged in the first branch On 17, second branch 18 is equipped with the first solenoid valve 5 of control 18 on-off of second branch.
First solenoid valve 5 is opened, and second branch 18 is connected, and refrigerant is flowed along second branch 18 in hot-pipe system, is no longer flowed Through air-cooled condenser 18, low pressure recycle bucket 7 is directly back to by hot-pipe system outlet 15;First solenoid valve 5 is closed, heat pipe system Refrigerant is flowed along the first branch 17 in system, flows through air-cooled condenser 18, is carried out heat exchange with outdoor Cryogenic air, is then just passed through Hot-pipe system outlet 15 is back in low pressure recycle bucket 7.
Hot-pipe system further includes check valve 3, check valve 3 be arranged in series refrigerated medium pump 1 and evaporator 4 it Between.Check valve 3 is arranged in 4 upstream of evaporator, can prevent in evaporator 4 after the boosting of liquid refrigerants endothermic gasification in hot-pipe system Recoil.
As a kind of preferred embodiment of this implementation, refrigeration system includes the compressor 8 being connected in series along refrigerant flow direction, cold Solidifying device.Condensing unit preferably uses water-cooled condenser 11, cooling water and refrigeration system high temperature refrigerant in water-cooled condenser 11 Heat exchange.
Since refrigerant is directly back to low pressure recycle bucket in the refrigeration system of this implementation, need to consider that compressor oil return is asked Topic.Oil eliminator 10 is set in refrigeration system, and it is cold in compressor 8 and water cooling that oil eliminator 10 is connected in series to setting Between condenser 11, bypass oil return branch 19 is additionally provided between oil eliminator 10 and compressor 8, bypass oil return branch 19 separates oil The lubricating oil separated and collected in device 10 is transmitted back to compressor.
The present embodiment bypass oil return branch 19 can effectively solve the problems, such as that the oil return of low pressure air return system is difficult, improve compression The reliability of machine 8.
It is equipped with second solenoid valve 9 on bypass oil return branch 19, for controlling the on-off of bypass oil return branch 19.
The refrigeration system of the present embodiment further includes electric expansion valve 12, and water-cooled condenser 11 is arranged in electric expansion valve 12 Along the downstream of refrigerant flow direction.Refrigerant is transformed into cryogenic high pressure liquid coolant, electric expansion valve after flowing through water-cooled condenser 11 12 are used for the throttling of refrigerant, and cryogenic high pressure liquid coolant is converted into the liquid coolant of low-temp low-pressure.
Temperature difference is little in outdoor temperature with computer room, especially spring, autumn transition season, mainly by hot-pipe system into Hot-air and outdoor normal temperature air natural heat dissipation in row computer room.But since the temperature difference is smaller, refrigerant can be gradually warmed up, so as to cause heat Guard system heat dissipation effect is deteriorated, and at this moment just needs to cool down to refrigerant, temperature-sensitive is arranged in composite type cold heat source air conditioning system Device 2, temperature sensing device 2 are used to measure the temperature for the refrigerant that hot-pipe system is flowed into from low pressure recycle bucket 7, and refrigerant is warming up to a fixed number Value, refrigeration system starting, cools down to refrigerant, and after refrigerant temperature is reduced to zone of reasonableness, refrigeration system is shut down.
Temperature sensing device 2 is arranged on low pressure recycle bucket 7, and low pressure recycle bucket 7 is in the refrigerant of the air-conditioning system of the present embodiment Turn station, the refrigerant in low pressure recycle bucket 7 most can in reflection system refrigerant virtual condition, temperature sensing device 2 is arranged and is followed in low pressure On ring bucket 7 can in more accurate measuring system refrigerant temperature.
In order to improve the energy utilization rate of computer room, the cooling water of 11 condensation side of water-cooled condenser absorbs under summer high load capacity Heat can produce 40~50 DEG C of high-temperature-hot-water, and high-temperature-hot-water, which can be concentrated after collection to family, swimming pool etc., needs heat single Position supply, plays the recycling of machine room heat.
As another scheme of the present embodiment, heat exchanger components are plate heat exchanger, and hot-pipe system passes through with refrigeration system Plate heat exchanger carries out heat exchange.Refrigerant individual flow in hot-pipe system and refrigeration system, high-speed low temperature low pressure refrigerant can be with Directly refrigerator oil is brought back in compressor, the oil eliminator 10 and bypass oil return branch 19 in refrigeration system can be cancelled.
The composite type cold heat source air conditioning system of the embodiment of the present invention, hot-pipe system and refrigeration system using intercommunication combined type System, makes full use of outdoor natural cooling source, and the biggish air-conditioning system of power consumption of compressor refrigeration is only relied on instead of tradition, is effectively dropped Low computer room temperature control energy consumption improves computer room electric energy service efficiency and computer room whole year Energy Efficiency Ratio, while the recycling heat of refrigeration system Amount is used for perimeter heating, and thermal energy rationally recycles, and the comprehensive utilization of electric energy is improved, to reduce carbon emission amount.
The embodiment of the invention provides a kind of temperature control methods of composite type cold heat source air conditioning system, comprising:
When outdoor temperature is lower than temperature in computer room, and the temperature difference is greater than Δ T1, the preferred value range of Δ T1 is 15~20 DEG C. Especially winter, compressor 8 are shut down, and refrigeration system is not run, and open refrigerated medium pump 1, and hot-pipe system is run, meanwhile, the first electricity Magnet valve 5 is closed, and second branch 18 is closed.The liquid refrigerants of the low-temp low-pressure of bottom is sent by refrigerated medium pump 1 in low pressure recycle bucket 7 Enter evaporator 4, liquid refrigerants is converted into gaseous coolant after carrying out heat exchange with high temperature air in computer room in evaporator 4, and gaseous state is cold Matchmaker flows into air-cooled condenser 6, and high-temperature gas refrigerant carries out heat exchange with outdoor Cryogenic air in air-cooled condenser 6, is converted into Bottom in low temperature liquid refrigerant return to low pressure recycle bucket 7 continues heat pipe circulation next time.
When outdoor temperature is higher than room temperature, or work as outdoor temperature lower than temperature in computer room, and the temperature difference is less than Δ T2, Δ The preferred value range of T2 is 3~14 DEG C.Especially summer opens compressor 8, refrigerated medium pump 1, and hot-pipe system, refrigeration system are same Shi Yunhang, while the first solenoid valve 5 is opened, second branch 18 is connected.The low temperature that compressor 8 absorbs 7 top of low pressure recycle bucket is low Gaseous coolant is pressed, compression forms high pressure gaseous refrigerant, the gaseous coolant of high temperature and pressure is then sent into water-cooled condenser 11, Refrigerant becomes cryogenic high pressure liquid refrigerants after exchanging with cooling water heat, liquid refrigerants forms low after the throttling of electric expansion valve 12 The liquid refrigerants of warm low pressure, liquid refrigerants flow into the bottom of low pressure recycle bucket 7, complete refrigeration link.Refrigerated medium pump 1 absorbs low temperature Liquid refrigerants is delivered in evaporator 4, and low temperature liquid refrigerant turns after carrying out heat exchange with high temperature air in computer room in evaporator 4 It is changed to gaseous coolant, gaseous coolant is back to low pressure recycle bucket 7 by the first solenoid valve 5, and gaseous coolant is joined through refrigeration system again With circularly cooling.
When outdoor temperature is lower than temperature in computer room, the temperature difference is less than Δ T1, and when being greater than Δ T2, especially spring, autumn was waited It crosses season, refrigerated medium pump 1 is opened, and hot-pipe system operation, the first solenoid valve 5 is closed, and second branch 18 is closed.Low temperature liquid refrigerant It is sent into evaporator 4 through refrigerated medium pump 1, liquid refrigerants is converted to gas after carrying out heat exchange with high temperature air in computer room in evaporator 4 State refrigerant, gaseous coolant flow into air-cooled condenser 6, and gaseous coolant carries out hot friendship with outdoor Cryogenic air in air-cooled condenser 6 It changes, is converted into low temperature refrigerant and returns to low pressure recycle bucket 7.When the temperature sensing device 2 being arranged on low pressure recycle bucket 7 detects refrigerant temperature When degree is more than setting value, compressor 8 starts, and refrigeration system operation freezes to refrigerant circulation in low pressure recycle bucket 7, supplements air-conditioning The cooling capacity of system.
Second solenoid valve 9 keeps normally off, automatically opens in the accumulative operation setting time of compressor 8, bypasses oil return Branch 19 is connected, and lubricating oil is transmitted back to compressor 8.
The present invention implements the temperature control method provided, can satisfy temperature control of the computer room under different temperature difference conditions and adjusts, sufficiently Using natural cooling source, shorten compressor refrigeration runing time, energy saving improves the energy use efficiency of computer room.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention Protect range.

Claims (20)

1. a kind of composite type cold heat source air conditioning system, for regulating and controlling temperature in computer room characterized by comprising
Refrigeration system is used for circularly cooling;
Hot-pipe system, high temperature air and system in the heat exchange and/or computer room for high temperature air in computer room and outdoor Cryogenic air The heat exchange of low temperature refrigerant in cooling system.
2. composite type cold heat source air conditioning system according to claim 1, which is characterized in that the hot-pipe system and the system Cooling system carries out heat exchange by heat exchanger components.
3. composite type cold heat source air conditioning system according to claim 2, which is characterized in that the heat exchanger components follow for low pressure Ring bucket (7), hot-pipe system are connected to the refrigeration system by the way that low pressure recycle bucket (7) are compound.
4. composite type cold heat source air conditioning system according to claim 3, which is characterized in that the heat pipe system of the hot-pipe system Entrance (14) are united set on low pressure recycle bucket (7) bottom, the liquid for sucking the interior bottom of the low pressure recycle bucket (7) is cold Matchmaker;The hot-pipe system outlet (15) of the hot-pipe system is set to the bottom of the low pressure recycle bucket (7), is used for refrigerant return extremely Low pressure recycle bucket (7) bottom.
5. composite type cold heat source air conditioning system according to claim 3, which is characterized in that the refrigeration system of the refrigeration system Entrance (13) setting unite on the top of the low pressure recycle bucket (7), for sucking the gaseous state of low pressure recycle bucket (7) internal upper part Refrigerant;Refrigeration system outlet (16) setting of the refrigeration system is in the interior bottom of the low pressure recycle bucket (7), for returning refrigerant It flow to the interior bottom of the low pressure recycle bucket (7).
6. -5 any composite type cold heat source air conditioning system according to claim 1, which is characterized in that the hot-pipe system packet Include the refrigerated medium pump (1), evaporator (4), air-cooled condenser (6) being connected in series along refrigerant flow direction;Evaporator (4) setting Heat exchange in computer room, for high temperature air in low temperature refrigerant in the hot-pipe system and computer room;The air-cooled condenser (6) Heat exchange of the setting in outdoor, for the hot-pipe system high temperature refrigerant and outdoor Cryogenic air.
7. composite type cold heat source air conditioning system according to claim 6, which is characterized in that the outlet of the evaporator (4) End branches out the first branch (17) and second branch (18), and the air-cooled condenser (6) is arranged on the first branch (17), The second branch (18) is equipped with the first solenoid valve (5) for controlling second branch (18) on-off.
8. composite type cold heat source air conditioning system according to claim 6, which is characterized in that the hot-pipe system further includes list To valve (3), the check valve (3) is arranged in series between the refrigerated medium pump (1) and the evaporator (4).
9. -5 any composite type cold heat source air conditioning system according to claim 1, which is characterized in that the refrigeration system packet Include compressor (8), the condensing unit being connected in series along refrigerant flow direction.
10. composite type cold heat source air conditioning system according to claim 9, which is characterized in that the condensing unit is water cooling Condenser (11), cooling water and the refrigeration system high temperature refrigerant heat exchange in the water-cooled condenser (11).
11. composite type cold heat source air conditioning system according to claim 10, which is characterized in that the refrigeration system further includes Oil eliminator (10), it is cold in the compressor (8) and the water cooling that the oil eliminator (10) is connected in series to setting Between condenser (11), bypass oil return branch (19), the side are additionally provided between the oil eliminator (10) and the compressor (8) The lubricating oil that the oil eliminator (10) separates and collects is transmitted back to compressor (8) by logical oil return branch (19).
12. composite type cold heat source air conditioning system according to claim 11, which is characterized in that the bypass oil return branch (19) second solenoid valve (9) are equipped with, for controlling the on-off of bypass oil return branch (19).
13. composite type cold heat source air conditioning system according to claim 10, which is characterized in that the refrigeration system further includes Electric expansion valve (12), the electric expansion valve (12) are arranged in the water-cooled condenser (11) under refrigerant flow direction Trip.
14. composite type cold heat source air conditioning system according to claim 3, which is characterized in that the composite type cold heat source is empty Adjusting system further includes temperature sensing device (2), and the temperature sensing device (2) flows into the heat for measuring from the low pressure recycle bucket (7) The temperature of the refrigerant of guard system.
15. composite type cold heat source air conditioning system according to claim 14, which is characterized in that the temperature sensing device (2) sets It sets on the low pressure recycle bucket (7).
16. composite type cold heat source air conditioning system according to claim 2, which is characterized in that the heat exchanger components are board-like Heat exchanger, the hot-pipe system carry out heat by plate heat exchanger with the refrigeration system and exchange.
17. a kind of temperature control method using the composite type cold heat source air conditioning system as described in claim 1-16 is any, feature It is, comprising:
When outdoor temperature is lower than temperature in computer room, and the temperature difference is greater than Δ T1, refrigeration system is shut down, hot-pipe system booting, heat pipe System carries out the heat exchange of high temperature air and outdoor Cryogenic air in computer room, controls temperature in computer room;
When outdoor temperature is higher than room temperature or outdoor temperature is lower than temperature in computer room, and when the temperature difference is less than Δ T2, heat pipe system System, refrigeration system are opened simultaneously, refrigeration system circularly cooling, and it is low with refrigeration system that hot-pipe system carries out high temperature air in computer room The heat exchange of warm refrigerant;
When outdoor temperature is lower than temperature in computer room, and the temperature difference is less than Δ T1, and when being greater than Δ T2, hot-pipe system is opened, refrigeration system Intermittence is opened when the temperature of refrigerant exceeds setting value in hot-pipe system;Wherein Δ T1 > Δ T2.
18. the temperature control method of composite type cold heat source air conditioning system according to claim 17, which is characterized in that the second electromagnetism Valve (9) is automatically opened in compressor (8) accumulative operation setting time, and bypass oil return branch (19) conducting, lubricating oil is transmitted back to Compressor (8).
19. the temperature control method of composite type cold heat source air conditioning system according to claim 17, which is characterized in that Δ T1=15 ~20 DEG C.
20. the temperature control method of composite type cold heat source air conditioning system according to claim 17, which is characterized in that Δ T2=3 ~14 DEG C.
CN201811544070.8A 2018-12-17 2018-12-17 Composite type cold heat source air conditioning system and temperature control method Pending CN109751799A (en)

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CN205690728U (en) * 2016-06-14 2016-11-16 安徽省君杰新能源科技有限公司 A kind of compound computer-room air conditioning system
CN106288515A (en) * 2016-08-05 2017-01-04 北京百度网讯科技有限公司 A kind of System and method for for the waste heat recovery to data center
CN108826554A (en) * 2018-08-17 2018-11-16 北京中热信息科技有限公司 A kind of double multi-joint units of cold source heat pipe air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145906A (en) * 2019-05-16 2019-08-20 广东美的暖通设备有限公司 Coolant circulating system and its control method and computer readable storage medium
CN110145906B (en) * 2019-05-16 2021-10-26 广东美的暖通设备有限公司 Refrigerant circulation system, control method thereof and computer readable storage medium
CN112146300A (en) * 2019-06-28 2020-12-29 苏州电器科学研究院股份有限公司 Cooling unit serving great temperature difference change environment

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