CN205783456U - A kind of water-cooling type fluorine pump air-conditioning refrigeration system - Google Patents
A kind of water-cooling type fluorine pump air-conditioning refrigeration system Download PDFInfo
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- CN205783456U CN205783456U CN201620094682.1U CN201620094682U CN205783456U CN 205783456 U CN205783456 U CN 205783456U CN 201620094682 U CN201620094682 U CN 201620094682U CN 205783456 U CN205783456 U CN 205783456U
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- heat exchange
- fluorine pump
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- gas
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 72
- 239000011737 fluorine Substances 0.000 title claims abstract description 72
- 238000005057 refrigeration Methods 0.000 title claims abstract description 38
- 238000004378 air conditioning Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 239000003507 refrigerant Substances 0.000 claims abstract description 43
- 230000000712 assembly Effects 0.000 claims abstract description 37
- 238000000429 assembly Methods 0.000 claims abstract description 37
- 239000000498 cooling water Substances 0.000 claims abstract description 7
- 239000006200 vaporizer Substances 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 16
- 238000009835 boiling Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000009298 Trigla lyra Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
This utility model provides a kind of water-cooling type fluorine pump air-conditioning refrigeration system, and described system includes: the outdoor heat exchange unit connected by heat exchanging pipe and indoor heat exchange unit；Outdoor heat exchange unit includes: the condenser being connected in series by pipeline and gas-liquid separator, and the cooling water outside refrigerant vapour is with condenser in described condenser carries out heat exchange, and described gas-liquid separator is refrigerant vapour and refrigerant liquid in separate lines.Indoor heat exchange unit includes: be connected in series evaporator assemblies and fluorine pump assembly by pipeline.So that the refrigerant flow rates in condenser increases, improve heat exchange efficiency.The refrigeration as general air-conditioning refrigeration system can be reached.Additionally, due to eliminate compressor and expansion valve in systems, it is possible to reduce the power consumption of air-conditioning refrigeration system, it is achieved reduce use cost and the purpose of energy consumption.
Description
Technical field
This utility model relates to technical field of refrigeration equipment, particularly relates to a kind of water-cooling type fluorine pump air-conditioning refrigeration system.
Background technology
Along with science and technology growing, in communications equipment room, the requirement of machine is more and more higher, and the power consumption of machine, caloric value are the most increasing.In view of calculator room equipment caloric value is very big, it is required in machine room throughout the year reducing ambient temperature by refrigeration.Owing in machine room, life-span and the operational reliability of machinery equipment are all had a significant impact by environment, so the temperature and humidity in machine room is strictly controlled.In machine room, the communication exchange equipment caloric value such as data center is relatively big, and sensible heat ratio is higher, it is generally required to year round cooling.In view of the requirement of the damp and hot control of machine room, it is often totally enclosed type by Design of Machine Room, and air conditioner in machine room energy consumption is the highest, averagely accounts for about the 40% of whole calculator room equipment total power consumption.Therefore, on the premise of guaranteeing calculator room equipment safe operation, reduce air conditioning energy consumption to greatest extent, be to realize the key that information machine room is energy-conservation.At present, energy-saving type air conditioner uses compressor cooling unit.Compressor cooling unit utilizes the conversion between cryogen gaseous and liquid to realize heat absorption and heat release, thus air in machine room is realized refrigeration.Although above-mentioned compressor refrigeration unit is capable of the refrigeration to machine room, if but have extraneous water-cooled source, between cryogen gaseous and liquid during conversion, energy consumption of compressor is big, and then when causing it to freeze, efficiency is low, cost is big.It is unfavorable for reducing cost and reducing energy consumption.
Summary of the invention
In view of this, this utility model embodiment provides a kind of water-cooling type fluorine pump air-conditioning refrigeration system, to realize in the case of suitable ambient temperature, it is possible to effectively reduce the purpose of air-conditioning refrigeration system power consumption.
This utility model embodiment provides a kind of water-cooling type fluorine pump air-conditioning refrigeration system, and described system includes: the outdoor heat exchange unit connected by heat exchanging pipe and indoor heat exchange unit；
Described outdoor heat exchange unit includes: the condenser being connected in series by pipeline and gas-liquid separator, wherein, the outlet of described gas-liquid separator is connected with the entrance of condenser, the outlet of described condenser is connected with the entrance of described gas-liquid separator, cooling water outside refrigerant vapour is with condenser in described condenser carries out heat exchange, and described gas-liquid separator is refrigerant vapour and refrigerant liquid in separate lines；
Described indoor heat exchange unit includes: be connected in series evaporator assemblies and fluorine pump assembly by pipeline, the entrance of described fluorine pump assembly is connected with the outlet of gas-liquid separator, the outlet of described fluorine pump assembly is connected with the entrance of evaporator assemblies, and described fluorine pump assembly is used for forcing in indoor heat exchange unit refrigerant cycle in pipeline；
The entrance of described evaporator assemblies is connected with the outlet of fluorine pump assembly, and the outlet of described evaporator assemblies is connected with the entrance of gas-liquid separator, and described evaporator assemblies is for carrying out heat exchange by the cold-producing medium in room air and pipeline.
Further, described indoor heat exchange unit includes: separating branch road, described separation branch road is connected with the outlet of fluorine pump assembly and the entrance of gas-liquid separator respectively, refrigerant vapour and refrigerator liquid in heat exchange unit in separation chamber.
Further, described separation branch road includes: orifice filter, and described orifice filter is used for filtering refrigerant liquid in separation branch road, and described orifice filter is arranged on separation branch road, and near the side of gas-liquid separator.
Further, described indoor heat exchange unit includes: constant flow rate actuator, described constant flow rate actuator is arranged on the pipeline between fluorine pump assembly and evaporator assemblies, cold-producing medium total flow in heat exchange unit pipeline in conditioning chamber.
Further, described evaporator assemblies includes: at least one vaporizer, and when vaporizer is more than one, described vaporizer is connected in parallel.
Further, described evaporator assemblies also includes: flow control valve, and described flow control valve is arranged with evaporator series, and is connected with the entrance of vaporizer and the outlet of fluorine pump assembly respectively.
Further, described fluorine pump assembly includes: at least one fluorine pump, and when fluorine pump is more than one, described fluorine parallel connection of pumps connects.
Further, described pipeline is high voltage bearing copper pipe.
Further, affiliated cold-producing medium is low boiling point working medium.
The water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment provides, by using fluorine pump forced refrigeration agent to circulate, so that the refrigerant flow rates in condenser increases, improves heat exchange efficiency.The refrigeration as general air-conditioning refrigeration system can be reached.Additionally, due to eliminate compressor and expansion valve in systems, it is possible to reduce the power consumption of air-conditioning refrigeration system, it is achieved reduce use cost and the purpose of energy consumption.
Accompanying drawing explanation
The detailed description that non-limiting example is made made with reference to the following drawings by reading, other features, objects and advantages of the present utility model will become more apparent upon:
Fig. 1 is the structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment one provides；
Fig. 2 is the structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment two provides；
Fig. 3 is the structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment three provides.
The technical characteristic that reference in figure refers to respectively is:
1, outdoor heat exchange unit；2, indoor heat exchange unit；3, condenser；4, gas-liquid separator；
5, flow control valve；6, fluorine pump assembly；7, evaporator assemblies；8, vaporizer；
9, flow control valve；10, constant flow rate controller；11, branch road is separated；12, orifice filter；
13, fluorine pump.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.It is understood that specific embodiment described herein is used only for explaining this utility model, rather than to restriction of the present utility model.It also should be noted that, for the ease of describing, accompanying drawing illustrate only the part relevant to this utility model rather than full content.
Embodiment one
The structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that Fig. 1 this utility model embodiment one provides.As it is shown in figure 1, described water-cooling type fluorine pump air-conditioning refrigeration system includes: the outdoor heat exchange unit 1 connected by heat exchanging pipe and indoor heat exchange unit 2；Described outdoor heat exchange unit 1 includes: the condenser 3 being connected in series by pipeline and gas-liquid separator 4, wherein, the outlet of described gas-liquid separator 4 is connected with the entrance of condenser 3, the outlet of described condenser 3 is connected with the entrance of described gas-liquid separator 4, cooling water outside refrigerant vapour is with condenser 3 in described condenser 3 carries out heat exchange, and described gas-liquid separator 4 is used for separating refrigerant vapour and refrigerant liquid；Described indoor heat exchange unit 2 includes: the evaporator assemblies 7 being connected in series by pipeline and fluorine pump assembly 6, the described entrance of fluorine pump assembly 6 is connected with the outlet of gas-liquid separator 4, the described outlet of fluorine pump assembly 6 is connected with the entrance of evaporator assemblies 7, and described fluorine pump assembly 6 is used for forcing in indoor heat exchange unit refrigerant cycle in pipeline；The entrance of described evaporator assemblies 7 is connected with the outlet of fluorine pump assembly 6, and the outlet of described evaporator assemblies 7 is connected with the entrance of gas-liquid separator 4, and described evaporator assemblies 7 is for carrying out heat exchange by the cold-producing medium in room air and pipeline.Wherein cold-producing medium can use low boiling point working medium.Described pipeline can use high voltage bearing copper pipe, to improve heat exchange efficiency.
Indoor heat exchange unit 2 can be generally arranged in big-and-middle-sized machine room or equipment, for freezing for machine room or equipment.Concrete, machine room or the heat of equipment can be absorbed by heat exchange by indoor heat exchange unit 2；Outdoor heat exchange unit 1 can arrange the contacts such as machine room or the sub-cooled material that equipment is outer and client provides, such as cooling water.The sub-cooled material that the heat of the machine room absorbed in pipeline or equipment and client provide can be swapped by outdoor heat exchange unit 1, enable the cold-producing medium cyclic absorption machine room in described pipeline or the heat of equipment.
Indoor heat exchange unit 2 includes: the evaporator assemblies 7 being connected in series by pipeline and fluorine pump assembly 6, the described entrance of fluorine pump assembly 6 is connected with the outlet of gas-liquid separator 4, the described outlet of fluorine pump assembly 6 is connected with the entrance of evaporator assemblies 7, and described fluorine pump assembly 6 is used for forcing in indoor heat exchange unit refrigerant cycle in pipeline；The entrance of described evaporator assemblies 7 is connected with the outlet of fluorine pump assembly 6, and the outlet of described evaporator assemblies 7 is connected with the entrance of gas-liquid separator 4, and described evaporator assemblies 7 is for carrying out heat exchange by the cold-producing medium in room air and pipeline.Filling a certain amount of low boiling point working medium, i.e. cold-producing medium or its mixture in system pipeline, fluorine pump assembly 6 forced refrigeration agent circulates in systems.During work, fluorine pump assembly 6 forced refrigeration agent liquid flows through evaporator assemblies 7, in machine room or equipment, hot-air heat release is to the cold-producing medium of circulation in evaporator assemblies 7, the cold-producing medium endothermic gasification of cold-producing medium heat absorption and part forms refrigerant vapour, refrigerant liquid and refrigerant vapor and enters in gas-liquid separation 4 device.
Described outdoor heat exchange unit 1 includes: the condenser 3 being connected in series by pipeline and gas-liquid separator 4, wherein, the outlet of described gas-liquid separator 4 is connected with the entrance of condenser 3, the outlet of described condenser 3 is connected with the entrance of described gas-liquid separator 4, cooling water outside refrigerant vapour is with condenser in described condenser 3 carries out heat exchange, described gas-liquid separator 4 refrigerant vapour and refrigerant liquid in separate lines.Owing to fluorine pump assembly 6 forced refrigeration agent circulates in systems, refrigerant liquid and refrigerator in gas-liquid separator 4 flow to condenser 3, the heat carried again is discharged in the cooling water that user provides, and becomes subcooled liquid after refrigerant liquid and refrigerant vapour heat release.Work is gone down the most continuously, it is possible to realize in the case of without compressor and expansion valve, cooling machine room or the purpose of equipment hot-air.In this system, fluorine pump assembly 6 forced circulation refrigerant liquid so that it is flow through evaporator assemblies 7.Flow velocity in evaporator assemblies 7 increases, and improves heat exchange efficiency；On the other hand, relative position that evaporator assemblies 7 is installed with condenser 3 and apart from unrestricted, easy for installation flexibly.
Outdoor heat exchange unit 1 may also include that flow control valve 5, described flow control valve 5 are arranged between described condenser 3 and gas-liquid separator 4.By flow control valve 5 can the flow of effective control piper, and then realize controlling cold-producing medium heat exchange duration in condenser 3.
In a preferred implementation of the present embodiment, described evaporator assemblies 7 includes: multiple vaporizers 8, and the plurality of vaporizer 8 is connected in parallel.Each vaporizer 8 can be inserted in different machine rooms or equipment, the heat in the air absorbing different machine rooms or equipment.Preferably to realize the absorption to heat.
Additionally, described evaporator assemblies 7 also includes: flow control valve 9, described flow control valve 9 is arranged in series with vaporizer 8, and is connected with the entrance of vaporizer 8 and the outlet of fluorine pump assembly 6 respectively.The refrigerant flow of each vaporizer 8 can be adjusted by flow control valve 7, can be adjusted according to the flow that cold-producing medium in each vaporizer 8 is absorbed, the utilization rate of cold-producing medium can be improved, and reduce the power consumption of water-cooling type fluorine pump air-conditioning refrigeration system further.
In another preferred implementation of the present embodiment, described indoor heat exchange unit 2 also includes: constant flow rate actuator 10, described constant flow rate actuator 10 is arranged on the pipeline between fluorine pump assembly 6 and evaporator assemblies 7, cold-producing medium total flow in 2 yuan of pipelines of heat exchange list in conditioning chamber.The total flow of cold-producing medium in pipeline can be regulated by constant flow rate actuator 10, and adjust the workload of fluorine pump assembly 6 accordingly, reduce the power consumption of water-cooling type fluorine pump air-conditioning refrigeration system.
The water-cooling type fluorine pump air-conditioning refrigeration system that the present embodiment provides, by using fluorine pump forced refrigeration agent to circulate, so that the refrigerant flow rates in condenser increases, improves heat exchange efficiency.The refrigeration as general air-conditioning refrigeration system can be reached.Additionally, due to eliminate compressor and expansion valve in systems, it is possible to reduce the power consumption of air-conditioning refrigeration system, it is achieved reduce use cost and the purpose of energy consumption.
Embodiment two
The present embodiment is optimized based on above-described embodiment.Owing to the cold-producing medium after condenser 3 still there may be refrigerant vapour, if refrigerant vapour continues to circulate in the pipeline of indoor heat exchange unit 2, evaporator assemblies 7 will necessarily be affected and absorb the efficiency of heat.Fig. 2 is the structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment two provides, see Fig. 2, described indoor heat exchange unit 2 increases and separates branch road 11, described separation branch road 11 is connected with the outlet of fluorine pump assembly 6 and the entrance of gas-liquid separator 4 respectively, refrigerant vapour and refrigerator liquid in heat exchange unit 2 in separation chamber.
Described separation branch road 11 includes: orifice filter 12, and described orifice filter 12 is used for filtering refrigerant liquid in separation branch road 11, and described orifice filter 12 is arranged on separation branch road 11, and near the side of gas-liquid separator 4.Orifice filter 12 is positioned close to the side of gas-liquid separator 4, it is possible to the preferably refrigerant liquid in filter pipeline.Passing through for ease of a small amount of gas, the perforate of orifice filter 12 can be made into sector, or makes what the axis with pipeline was off.Refrigerant vapour is backed within gas-liquid separator 4.
The present embodiment separates branch road by increasing on described indoor heat exchange unit, refrigerant vapour in indoor heat exchange unit pipeline and refrigerant liquid can be separated from pipeline, and make refrigerant vapour back within gas-liquid separator, it is possible to effectively promote the refrigerating efficiency of indoor heat exchange unit.
Embodiment three
The present embodiment is optimized based on above-described embodiment, and in the present embodiment, fluorine pump assembly 6 includes: multiple fluorine pumps 13, and the plurality of fluorine pump 13 is connected in parallel.Fig. 3 is the structural representation of the water-cooling type fluorine pump air-conditioning refrigeration system that this utility model embodiment three provides, and as seen from Figure 3, in the present embodiment, described fluorine pump assembly 6 includes 3 fluorine pumps 13 in parallel.Use multiple fluorine pump 13 can the circulation rate of cold-producing medium in heat exchange unit 2 pipeline in enhanced room, accelerate the heat transfer rate of vaporizer 8, it is possible to further promote the refrigerating efficiency of indoor heat exchange unit 2.Meanwhile, gas-liquid separator 4 can distribute cold medium flux to ensure coolant utilization ratio automatically according to the quantity of fluorine pump 13.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.It will be appreciated by those skilled in the art that this utility model is not limited to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute without departing from protection domain of the present utility model.Therefore, although this utility model being described in further detail by above example, but this utility model is not limited only to above example, in the case of conceiving without departing from this utility model, other Equivalent embodiments more can also be included, and scope of the present utility model is determined by scope of the appended claims.
Claims (10)
1. a water-cooling type fluorine pump air-conditioning refrigeration system, it is characterised in that, including:
The outdoor heat exchange unit (1) connected by heat exchanging pipe and indoor heat exchange unit (2)；
Described outdoor heat exchange unit (1) including:
The condenser (3) being connected in series by pipeline and gas-liquid separator (4), wherein, the outlet of described gas-liquid separator (4) is connected with the entrance of condenser (3), the outlet of described condenser (3) is connected with the entrance of described gas-liquid separator (4), in described condenser (3), refrigerant vapour and condenser (3) cooling water outward carry out heat exchange, and described gas-liquid separator (4) is refrigerant vapour and refrigerant liquid in separate lines；
Described indoor heat exchange unit (2) including: the evaporator assemblies (7) being connected in series by pipeline and fluorine pump assembly (6),
The entrance of described fluorine pump assembly (7) is connected with the outlet of gas-liquid separator (4), the outlet of described fluorine pump assembly (6) is connected with the entrance of evaporator assemblies (7), and described fluorine pump assembly (6) is used for forcing in indoor heat exchange unit (2) refrigerant cycle in pipeline；
The entrance of described evaporator assemblies (7) is connected with the outlet of fluorine pump assembly (6), the outlet of described evaporator assemblies (7) is connected with the entrance of gas-liquid separator (4), and described evaporator assemblies (7) is for carrying out heat exchange by the cold-producing medium in room air and pipeline.
System the most according to claim 1, it is characterised in that described indoor heat exchange unit (2) including:
Separate branch road (11), described separation branch road (11) is connected with the outlet of fluorine pump assembly (6) and the entrance of gas-liquid separator (4) respectively, refrigerant vapour and refrigerator liquid in heat exchange unit (2) pipeline in separation chamber.
System the most according to claim 2, it is characterised in that described separation branch road (11) including:
Orifice filter (12), described orifice filter (12) is used for filtering refrigerant liquid in separation branch road (11), described orifice filter (12) is arranged in separation branch road (11), and near the side of gas-liquid separator (4).
System the most according to claim 1, it is characterised in that described indoor heat exchange unit (2) including:
Constant flow rate actuator (10), described constant flow rate actuator (10) is arranged on the pipeline between fluorine pump assembly (6) and evaporator assemblies (7), cold-producing medium total flow in heat exchange unit (2) pipeline in conditioning chamber.
System the most according to claim 1, it is characterised in that described evaporator assemblies (7) including:
At least one vaporizer (8), and when vaporizer (8) is more than one, described vaporizer (8) is connected in parallel.
System the most according to claim 5, it is characterised in that described evaporator assemblies (7) also includes:
Flow control valve (9), described flow control valve (9) is arranged in series with vaporizer (8), and is connected with the entrance of vaporizer (8) and the outlet of fluorine pump assembly (6) respectively.
System the most according to claim 1, it is characterised in that described fluorine pump assembly (6) including:
At least one fluorine pump (13), and when fluorine pump (13) is more than one, described fluorine pump (13) is connected in parallel.
System the most according to claim 1, it is characterised in that described outdoor heat exchange unit (1) including:
Flow control valve (5), described flow control valve (5) is arranged between described condenser (3) and gas-liquid separator (4).
System the most according to claim 1, it is characterised in that described pipeline is high voltage bearing copper pipe.
System the most according to claim 1, it is characterised in that affiliated cold-producing medium is low boiling point working medium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620094682.1U CN205783456U (en) | 2016-01-29 | 2016-01-29 | A kind of water-cooling type fluorine pump air-conditioning refrigeration system |
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| CN201620094682.1U CN205783456U (en) | 2016-01-29 | 2016-01-29 | A kind of water-cooling type fluorine pump air-conditioning refrigeration system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561955A (en) * | 2017-12-18 | 2018-09-21 | 深圳市艾特网能技术有限公司 | A kind of refrigeration system and method for data center |
| CN110243215A (en) * | 2019-07-12 | 2019-09-17 | 南京春荣节能科技有限公司 | A kind of adjustable heat pipe heat exchanging system of cooling capacity range |
| CN110455001A (en) * | 2019-09-06 | 2019-11-15 | 北京中普瑞讯信息技术有限公司 | A kind of refrigeration system |
-
2016
- 2016-01-29 CN CN201620094682.1U patent/CN205783456U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561955A (en) * | 2017-12-18 | 2018-09-21 | 深圳市艾特网能技术有限公司 | A kind of refrigeration system and method for data center |
| CN110243215A (en) * | 2019-07-12 | 2019-09-17 | 南京春荣节能科技有限公司 | A kind of adjustable heat pipe heat exchanging system of cooling capacity range |
| CN110455001A (en) * | 2019-09-06 | 2019-11-15 | 北京中普瑞讯信息技术有限公司 | A kind of refrigeration system |
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Effective date of registration: 20180929 Address after: 100124 Beijing Chaoyang District four Huidong Sihui building 4007E Patentee after: BeijingZhongpuruixun Information Technology Co., Ltd. Address before: 100124 Beijing Chaoyang District four Huidong Sihui building 4007E Co-patentee before: Liu Zaiguang Patentee before: Wang Heng |
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