CN106766410A - A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit - Google Patents

A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit Download PDF

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Publication number
CN106766410A
CN106766410A CN201710080025.0A CN201710080025A CN106766410A CN 106766410 A CN106766410 A CN 106766410A CN 201710080025 A CN201710080025 A CN 201710080025A CN 106766410 A CN106766410 A CN 106766410A
Authority
CN
China
Prior art keywords
fluorine pump
valve
pipeline
fluorine
refrigerating medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710080025.0A
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Chinese (zh)
Inventor
孙明迪
袁祎
程姗
张定樑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Canatal Data Centre Environmental Tech Co Ltd
Original Assignee
Nanjing Canatal Data Centre Environmental Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Canatal Data Centre Environmental Tech Co Ltd filed Critical Nanjing Canatal Data Centre Environmental Tech Co Ltd
Priority to CN201710080025.0A priority Critical patent/CN106766410A/en
Publication of CN106766410A publication Critical patent/CN106766410A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006Accumulators

Abstract

The invention discloses a kind of fluorine pump kind of refrigeration cycle assignment of traffic unit, it is characterised in that:Including outdoor unit, fluorine pump assembly and indoor end, the fluorine pump assembly includes reservoir, bypass motor-driven valve and at least one set of fluorine pump group part, the fluorine pump group part provides refrigerating efficiency by building internal fluorine pump circulation pipeline and further refrigerating medium is depressured by electric expansion valve, so as to using fluorine pump kind of refrigeration cycle technology reduction fluorine pump open stage cavitation erosion probability of happening, improve the stability and Safety Redundancy of fluorine pump operation;Freon refrigerating medium is distributed into multigroup indoor evaporator, extension uses scope.Application enhancements technology accomplishes accurate refrigeration of distributing according to need according to different evaporators heat load size, Based Intelligent Control end refrigerating medium uninterrupted.

Description

A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit
Technical field
The invention belongs to machine room air-conditioning energy-saving technology, more particularly to fluorine pump kind of refrigeration cycle technology and its flow allocation method.
Background technology
In data center field, the power consumption accounting of air conditioner in machine room is very big, has been turned into using natural cooling source technology and ground in recent years Study carefully trend.Wherein fluorine pump technology, i.e., when outdoor temperature is less than indoor temperature, refrigerating medium is cold after releasing heat in outdoor condenser Congeal into liquid, is pumped to evaporator, after absorbing machine room heat, outdoor condenser is entered with steam state or vapour-liquid admixture, puts Go out the Refrigeration Technique of heat, be gradually widely used.
Patent of invention CN200910181213.8 discloses a kind of energy-saving air conditioner of indirect utilization outdoor cold source, works as outdoor Temperature opens fluorine pump circulation less than after design temperature, without opening compressor, reduces operation of air conditioner power consumption.Patent of invention CN201110152404.9 discloses a kind of dual power source air-conditioner set, and using condenser, evaporator and fluorine pump complete refrigeration and follow It is bad.When outdoor temperature is relatively low, compressor cooling unit is better than using fluorine pump refrigerating medium group Energy Efficiency Ratio.Patent of invention CN201110435167 discloses a kind of energy-saving air conditioning system, including indoor set, outdoor unit and pump that pipeline is connected follow bad system, Indoor set includes compressor assembly evaporator and the multi-joint evaporator of fluorine pumping system.Outdoor unit includes compressor assembly condenser and fluorine The multi-joint condenser of pumping system.According to the difference of outdoor temperature, realize that pump circulation and compressor cooling intelligently combine, it is real The energy-saving run of existing data center.
Existing fluorine pump technology generally studies compressor refrigeration system and fluorine pump refrigeration system and sets realization by pipeline component System switches and operation problem, after usual fluorine pump refrigeration system is opened, whole freon refrigerating mediums is delivered into indoor set evaporation Device, prior art is not controlled reasonably the supply of freon flow and accomplishes to distribute on demand.Modern computer room is to ring The control of environmental temperature and humidity is more and more stricter, simultaneously because the operation load of each equipment cabinet server is unbalanced when most, just needs The refrigerating agent flux for being accurately controlled each end heat exchanger realizes accurate refrigeration, and thus distribution according to need improve whole refrigeration system The operational efficiency of system.
The content of the invention
Goal of the invention:For above-mentioned existing problem and shortage, it is an object of the invention to provide a kind of fluorine pump refrigeration Circular flow distributes unit, improves fluorine pump circulation technology, reduces fluorine pump open stage cavitation erosion probability of happening, improves fluorine pump operation Stability and Safety Redundancy, realize distribution according to need and the control technology of indoor evaporator freon flow.
Technical scheme:For achieving the above object, the technical solution adopted by the present invention is:A kind of fluorine pump kind of refrigeration cycle stream Amount distribution unit, including outdoor unit, fluorine pump assembly and indoor end, wherein:
The fluorine pump assembly includes reservoir, bypass motor-driven valve and at least one set of fluorine pump group part, and the fluorine pump group part includes One fluorine pump, the first ball valve, the second ball valve, the 5th ball valve, the first check valve, the second check valve and electronic by-passing valve, the room The outlet of outer machine is connected with the entrance of reservoir, and the outlet of the reservoir is connected by pipeline with the entrance of the first fluorine pump, institute The porch pipeline for stating the first fluorine pump is additionally provided with the first ball valve, and the first fluorine pump top and afterbody are respectively equipped with refrigerating medium outlet With motor coolant outlet, refrigerating medium outlet is connected with indoor end and reservoir entrance respectively by pipeline, and described the The second ball valve and the first check valve, the refrigerating medium outlet connection liquid storage are additionally provided with the pipeline of one fluorine pump refrigerating medium outlet successively Electronic by-passing valve is additionally provided with the pipeline of device;The motor coolant outlet is connected by pipeline with the inlet return of reservoir, and The 5th ball valve and the 3rd check valve are also sequentially provided with the pipeline of cooling of electrode outlet;
The indoor end includes multigroup indoor units, and every group of indoor units include electric expansion valve, device for drying and filtering, change Hot device and indoor fan, at the top of the fluorine pump refrigerating medium outlet be connected with heat exchanger by pipeline, the indoor fan with change Hot device shares air-cooled passage, and electric expansion valve and dry filter are set gradually on the pipeline of the refrigerating medium outlet connection heat exchanger Device;The outlet of the heat exchanger is connected to form circulation by pipeline with the inlet return of outdoor unit.
Preferably, the fluorine pump group part is two groups, and for parallel way is connected.
Preferably, the heat exchanger is micro-channel heat exchanger.
Preferably, also including the controller being connected with electric expansion valve.
Beneficial effect:Relative to prior art, the present invention has advantages below:1. fluorine pump circulation technology is improved, fluorine is reduced Pump open stage cavitation erosion probability of happening, improves the stability and Safety Redundancy of fluorine pump operation.2. fluorine pump kind of refrigeration cycle is by liquid Freon refrigerating medium distributes to multigroup indoor machine evaporation, changes fluorine pump and the man-to-man universal present situation of indoor set, extends fluorine pump Technology uses scope.3. the distribution according to need of indoor evaporator freon flow and control technology, according to every group of indoor evaporator Load of heat, Based Intelligent Control refrigerating agent flux accomplishes every group of accurate refrigeration of indoor evaporator, on demand selectivity distribution.
Brief description of the drawings
Fig. 1 is the system principle schematic diagram of fluorine pump kind of refrigeration cycle assignment of traffic unit of the present invention.
Wherein, outdoor unit A, fluorine pump assembly B, multigroup indoor end C, reservoir 1, bypass motor-driven valve 2, the first ball valve 3, One fluorine pump 4, the second ball valve 5, the first check valve 6, the 3rd ball valve 7, the second fluorine pump 8, the 4th ball valve 9, the second check valve the 10, the 3rd Check valve 11, the 5th ball valve 12, electric expansion valve 13, device for drying and filtering 14, micro-channel heat exchanger 15, indoor fan 16.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate The present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to of the invention each The modification for planting the equivalent form of value falls within the application appended claims limited range.
Fig. 1 is systematic schematic diagram of the invention, of the invention with protrusion for the ease of being stressed to main points of the present invention Specific effect, draws compressor refrigeration system, compressor refrigeration system and its switching between fluorine pump refrigeration system in figure Process is identical with prior art.It is contemplated that the range of application of extension prior art, using fluorine pump kind of refrigeration cycle technology Fluorine pump open stage cavitation erosion probability of happening is reduced, the stability and Safety Redundancy of fluorine pump operation is improved;By freon refrigerating medium Multigroup indoor evaporator is distributed to, extension uses scope.Application enhancements technology is according to different evaporators heat load size, intelligence control Refrigerating medium uninterrupted in end processed, accomplishes accurate refrigeration of distributing according to need, and specifically technical scheme is as follows:
The invention mainly comprises the multigroup indoor end connected by pipeline, outdoor unit and fluorine pump assembly, described interior End includes indoor fan, micro-channel heat exchanger, electric expansion valve and device for drying and filtering, and described fluorine pump assembly includes liquid storage Device, electronic by-passing valve, the first ball valve, the first fluorine pump, the first check valve, the second ball valve, the second fluorine pump, the second check valve, the 3rd Ball valve, the 4th ball valve, the 5th ball valve, the 3rd check valve.Outdoor unit is used to cool down freon, makes the reduction of its temperature for room Interior end radiating, fluorine pump assembly is used to collect the freon liquid of outdoor unit cooling, and is distributed to using fluorine pump circulation technology Multigroup indoor end.Indoor end is used for Freon liquid evacuator body into overheat gas or vehicle repair major fluid, with cooling chamber Air.
Because the multigroup indoor end of fluorine pump assembly correspondence, to improve system stable operation, it is to avoid freon is because revealing or patrolling Inspection causes system-down, sets the first fluorine pump and the second fluorine pump, the first ball valve of corresponding setting, the second ball valve, the 3rd ball valve, the Four ball valves, the 5th ball valve are further pumped out with turning off the maintenance that freon circulation facilitates fluorine pump in the first fluorine pump and the second fluorine Mouth sets first and works as check valve and the second check valve, by above-mentioned design, two is just formed between reservoir and indoor end Freon transmission channel, it is to avoid the crossfire phenomenon of freon liquid occur in two transmission channels.Such as need to use the first fluorine pump, need to beat The first ball valve, the second ball valve, the 5th ball valve are opened, the 3rd ball valve, the 4th ball valve is simultaneously closed off;Correspondingly need to such as use the second fluorine Pump, need to open the 3rd ball valve, the 4th ball valve, the 5th ball valve, simultaneously close off the first ball valve, the second ball valve.
Further, in two groups of fluorine pump joint outlets, electronic by-passing valve is set, electronic by-passing valve opposite side connects liquid storage Device import.Initial time period is opened in fluorine pump open two-way electronic valve.As a example by opening the first fluorine pump, in reservoir, the first ball valve, Second ball valve, forms Freon liquid body loop between the first check valve, electronic by-passing valve, be easy to freon pump smoothly to open. In the present invention, two groups of freon joint outlets refer to this section of liquid between multigroup indoor end after two groups of fluorine pump discharges Body pipeline.It should be noted that freon pump work characteristic requirements fluorine pump on startup have larger static pressure inlet head and Less detent torque.Static pressure inlet head depends on the freon fluid pressure in reservoir, and detent torque depends on fluorine pump After outlet, the lift needed for flowing through multigroup indoor end, outdoor unit and intermediate connection tube road, therefore the above-mentioned measure of this patent makes Obtain the microflow interior circulation that freon liquid is formed in outdoor unit, reservoir, fluorine pump, electronic by-passing valve and pipeline valve member.Increase The static pressure inlet head of fluorine pump, reduces resistance during fluorine pump startup, freon is smoothly started, and reduces fluorine pump startup When resistance, freon is smoothly started, reduce pump cavitation erosion, improve fluorine pump running life.
Further, each group of indoor end in multigroup indoor end, including the electric expansion valve being sequentially connected, Device for drying and filtering, micro-channel heat exchanger, wherein the maintenance and replacing of indoor end for convenience, can also enter in every group of indoor end Outlet sets ball valve, liquid-sighting glass etc..Wherein, micro-channel heat exchanger inside fluid channel provides higher flow rate to strengthen for Freon liquid Heat exchange;Impurity particle moisture content in device for drying and filtering removal freon liquid etc., prevents micro-channel heat exchanger from occurring dirty stifled.Blower fan Part can be with speed governing operation, it is ensured that the cold that freon liquid is carried is passed into room air, and ensures indoor air temperature Also keep constant when room is loaded and changed.
Further, electric expansion valve, electronic expansion valve controls freon liquid are set at the inlet of end indoors The latus rectum formed by tapered needle valve and valve seat changes to change freon fluid flow, is adapted to freon as the small of refrigerating medium Flow loop control, and can further reduce the pressure of freon so that the evaporating temperature of indoor end is lower, obtains more Heat exchange amount.Different from usually using electric expansion valve, this patent electric expansion valve is not provided with temperature sensor and pressure sensing Device, i.e., exist not against pressure difference before and after the aperture of heat exchanger degree of superheat control electric expansion valve, with compressor refrigeration system expansion valve Only 0.1MPa or so before and after 1.3MPa or so differences, fluorine pumping system valve, expansion valve is at this pressure not openable.
This patent also includes an electronic expansion valve controller, can be according to the size of indoor heat load directly to electronic expansion Valve carries out the unlatching step number of the control electric expansion valve of equal proportion so that the assignment of traffic of freon follows load of heat and changes Become.And traditional design is to set temperature sensor and pressure and flow sensor by pipeline, by pipeline Freon refrigerating medium is monitored, fluorine pump technology of the method to low discharge
Special instruction, the unavailable electronic proportion adjustment ball valve of this patent electric expansion valve and other differential pressure control valve generations Replace, reason has three:One is that freon differs greatly with chilled water as refrigerating medium as the flow of refrigerating medium, with end in 30kW rooms As a example by end, chilled water is 5.2m3/h as refrigerating medium water-carrying capacity, and freon only needs 0.5m3/h as refrigerating medium, in current industry Also without the electrically operated valve of such Small Flow Control.Two because freon easily leakage and, current electrical ball valve harmful to environment Application is hot and cold water, and ethylene glycol solution does not support the use of freon.Three is that freon is adjusted by electric adjustable ball valve Section, lacks the expansion of electric expansion valve, it is impossible to which, effectively by the reduction of freon pressure, using effect is had a greatly reduced quality.

Claims (4)

1. a kind of fluorine pump kind of refrigeration cycle assignment of traffic unit, it is characterised in that:Including outdoor unit, fluorine pump assembly and indoor end, Wherein:
The fluorine pump assembly includes reservoir, bypass motor-driven valve and at least one set of fluorine pump group part, and the fluorine pump group part includes one Fluorine pump, the first ball valve, the second ball valve, the 5th ball valve, the first check valve, the second check valve and electronic by-passing valve, the outdoor unit Outlet be connected with the entrance of reservoir, the outlet of the reservoir is connected by pipeline with the entrance of the first fluorine pump, described The porch pipeline of one fluorine pump is additionally provided with the first ball valve, and the first fluorine pump top and afterbody are respectively equipped with refrigerating medium outlet and electricity Machine coolant outlet, the refrigerating medium outlet is connected with indoor end and reservoir entrance respectively by pipeline, and first fluorine The second ball valve and the first check valve are additionally provided with the pipeline of pump refrigerating medium outlet successively, the refrigerating medium outlet connection reservoir Electronic by-passing valve is additionally provided with pipeline;The motor coolant outlet is connected by pipeline with the inlet return of reservoir, and electrode The 5th ball valve and the 3rd check valve are also sequentially provided with the pipeline of coolant outlet;
The indoor end includes multigroup indoor units, and every group of indoor units include electric expansion valve, device for drying and filtering, heat exchanger And indoor fan, the refrigerating medium outlet at the top of the fluorine pump is connected by pipeline with heat exchanger, the indoor fan and heat exchanger Air-cooled passage is shared, electric expansion valve and device for drying and filtering are set gradually on the pipeline of the refrigerating medium outlet connection heat exchanger; The outlet of the heat exchanger is connected to form circulation by pipeline with the inlet return of outdoor unit.
2. fluorine pump kind of refrigeration cycle assignment of traffic unit according to claim 1, it is characterised in that:The fluorine pump group part is two Group, and for parallel way is connected.
3. fluorine pump kind of refrigeration cycle assignment of traffic unit according to claim 1, it is characterised in that:The heat exchanger is microchannel Heat exchanger.
4. fluorine pump kind of refrigeration cycle assignment of traffic unit according to claim 1, it is characterised in that:Also include and electric expansion valve The controller of connection.
CN201710080025.0A 2017-02-14 2017-02-14 A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit Pending CN106766410A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107606809A (en) * 2017-10-20 2018-01-19 江苏兆胜空调有限公司 A kind of two phase flow high performance refrigerating unit
CN108548352A (en) * 2018-04-20 2018-09-18 依米康科技集团股份有限公司 A kind of computer-room air conditioning system and its control method
CN109539615A (en) * 2018-12-25 2019-03-29 北京中普瑞讯信息技术有限公司 A kind of water-cooling type fluorine pump refrigerant distribution unit

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CN202013041U (en) * 2011-03-09 2011-10-19 济南神华制冷设备有限公司 Barrel pump machine set for fluorine use
CN104406337A (en) * 2014-11-19 2015-03-11 深圳海悟科技有限公司 Anti-cavitation liquid feeding device and refrigeration system based on same
CN104764235A (en) * 2015-04-10 2015-07-08 深圳科士达科技股份有限公司 Fluoride pump air conditioning integration system for improving low temperature refrigeration ability
CN205066261U (en) * 2015-09-16 2016-03-02 安徽亿瑞深冷能源科技有限公司 Novel fluorine pump supplies liquid refrigerating system
CN106016465A (en) * 2016-06-29 2016-10-12 四川依米康环境科技股份有限公司 Variable frequency fluorine pump air conditioner
CN205807892U (en) * 2016-06-13 2016-12-14 北京库蓝科技有限公司 A kind of compression and fluorine pump cycle refrigeration system
CN206556311U (en) * 2017-02-14 2017-10-13 南京佳力图机房环境技术股份有限公司 A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202013041U (en) * 2011-03-09 2011-10-19 济南神华制冷设备有限公司 Barrel pump machine set for fluorine use
CN104406337A (en) * 2014-11-19 2015-03-11 深圳海悟科技有限公司 Anti-cavitation liquid feeding device and refrigeration system based on same
CN104764235A (en) * 2015-04-10 2015-07-08 深圳科士达科技股份有限公司 Fluoride pump air conditioning integration system for improving low temperature refrigeration ability
CN205066261U (en) * 2015-09-16 2016-03-02 安徽亿瑞深冷能源科技有限公司 Novel fluorine pump supplies liquid refrigerating system
CN205807892U (en) * 2016-06-13 2016-12-14 北京库蓝科技有限公司 A kind of compression and fluorine pump cycle refrigeration system
CN106016465A (en) * 2016-06-29 2016-10-12 四川依米康环境科技股份有限公司 Variable frequency fluorine pump air conditioner
CN206556311U (en) * 2017-02-14 2017-10-13 南京佳力图机房环境技术股份有限公司 A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107606809A (en) * 2017-10-20 2018-01-19 江苏兆胜空调有限公司 A kind of two phase flow high performance refrigerating unit
CN108548352A (en) * 2018-04-20 2018-09-18 依米康科技集团股份有限公司 A kind of computer-room air conditioning system and its control method
CN108548352B (en) * 2018-04-20 2021-06-01 依米康科技集团股份有限公司 Control method of machine room air conditioning system
CN109539615A (en) * 2018-12-25 2019-03-29 北京中普瑞讯信息技术有限公司 A kind of water-cooling type fluorine pump refrigerant distribution unit
CN109539615B (en) * 2018-12-25 2023-10-24 北京中普瑞讯信息技术有限公司 Water-cooling type fluorine pump refrigerant distribution unit

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Application publication date: 20170531