CN106440437A - Novel natural cooling resource refrigerating system and control method thereof - Google Patents
Novel natural cooling resource refrigerating system and control method thereof Download PDFInfo
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- CN106440437A CN106440437A CN201611049589.XA CN201611049589A CN106440437A CN 106440437 A CN106440437 A CN 106440437A CN 201611049589 A CN201611049589 A CN 201611049589A CN 106440437 A CN106440437 A CN 106440437A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0401—Refrigeration circuit bypassing means for the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a novel natural cooling resource refrigerating system and a control method thereof. The system comprises a condenser, a liquid accumulator, a freezing medium circulating pump, an electronic expansion valve, an evaporator and a refrigeration compressor. The evaporator, the compressor, the condenser, the liquid accumulator, the freezing medium circulating pump and the electronic expansion valve are connected in sequence to form a circulation loop, wherein the evaporator and the condenser are connected through a first by-pass pipeline, and the liquid accumulator and the electronic expansion valve are connected through a second by-pass pipeline; the refrigeration compressor, the condenser, the liquid accumulator, the electronic expansion valve and the evaporator form an air cooling water chilling unit refrigeration cycle system, and the condenser, the liquid accumulator, the freezing medium circulating pump and the evaporator form a natural cooling resource refrigeration cycle system. Compared with the prior art, a freezing medium is used as a circulating medium, so the novel natural cooling resource refrigerating system has the advantages of an ethylene glycol scheme and a pure water scheme, and no special antifreeze process is needed, the cost can be reduced and the heat exchange efficiency and the convenience of maintenance are improved.
Description
Technical field
The present invention relates to a kind of refrigeration system and its control method, more particularly to a kind of energy-conservation being applied to data center
The refrigeration system of type and its control method.
Background technology
Consumption of data center be usually data center in the information technoloy equipment such as server, switch, storage, refrigeration air-conditioner,
The overall energy consumption of the auxiliary equipments such as distribution battery.It is 90% left that information technoloy equipment and air conditioning energy consumption occupy data center's overall energy consumption
The right side, the air conditioning energy consumption as data center's auxiliary equipment occupies 40% about, is only second to information technoloy equipment power consumption.Refrigeration host computer exists
Wherein occupy core position, therefore improve refrigeration host computer efficiency and can effectively reduce consumption of data center.
The free low-temperature receiver commonly used at present is mainly the outdoor air of winter or spring and autumn.Therefore, if it would be possible, data
The addressing at center should be in the area that weather is colder or the low temperature time is long.In China, northern area is all to fit very much
Close and adopt free Refrigeration Technique.
For data center's year round cooling application characteristic, in north cold area, cooling by wind is entered with natural cooling source
Row combine, can in the winter time, autumn freezed using free natural cooling source (environment temperature), thus efficient electric refrigeration base
The synthesis realizing annual Energy Efficiency Ratio on plinth improves.
Comprehensive natural coldness resource utilizing situation at present, the natural coldness resource utilizing scheme of presently the most mature and reliable has the following two kinds
Mode：
1st, glycol solutions
It is combined with mechanical refrigeration for year round cooling operation demand natural cooling source, form 3 kinds of pattern (natural cooling source moulds
Formula, hybrid refrigeration pattern, compression refrigeration mode).Wherein pattern switching is switched over by electric T-shaped valve, in summer electronic three
Natural cooling source coil pipe is closed by port valve, relies on compressor cooling to provide low-temperature receiver；Transition season electric T-shaped valve is 0% to 100%
It is controlled, natural cooling source coil pipe is activated, but now environment temperature is insufficient to low it is impossible to realize providing completely cold, compression
Machine must assist operation；During winter, environment temperature is sufficiently low, then electric T-shaped valve is fully open, and compressor cuts out, then naturally cold
Source tray pipe provides whole colds.
In order to ensure system can be with reliability service in the winter time, then the circulatory system needs to fill anti-icing fluid, generally according to locality
Under meteorological condition, minimum temperature reduces by 5 degree again and carries out concentration proportioning；Anti-icing fluid has certain corrosivity for pipe-line system, and
And viscosity is higher than that pure water increases pump consumption, heat transfer characteristic is poorer than pure water, needs to configure more tail end heat exchange；Whole system
System needs to fill substantial amounts of anti-icing fluid, and maintenance is huge, and security presence hidden danger.
2nd, pure water scheme
The difference the most basic of pure water scheme and glycol solutions is to solve whole pipe-line system filling anti-icing fluid to be prevented
The drawbacks of jelly, natural cooling source system is separated with pipe-line system, heat exchange is carried out using Intermediate Heat Exchanger, natural cooling source is circulated
System fills anti-icing fluid, provides power cycle by circulating pump；Pure water scheme effectively reduces anti-icing fluid filling quantity and Maintenance Difficulty
Degree, but pipe-line system is circulated using pure water, is exposed to outdoor section and backup unit all has preventing freeze in winter problem, need in machine
Group increases heat tracing scheme and is solved；In addition carry out secondary heat exchange using Intermediate Heat Exchanger, there is heat transfer temperature difference, natural cooling source profit
Declined with efficiency, and Intermediate Heat Exchanger high cost, cleannes are had high demands, thus increasing maintenance workload.
Content of the invention
Goal of the invention：For problems of the prior art, the present invention provides a kind of new natural cold source refrigerating system
And its control method, this refrigeration system do not need to carry out special antifreeze process, can reduces cost, improve heat exchange efficiency and dimension
The convenience of shield.
Technical scheme：For achieving the above object, the present invention adopts the following technical scheme that：
A kind of new natural cold source refrigerating system, including condenser, reservoir, refrigerant circulation pump, electric expansion valve, steaming
Send out device and refrigeration compressor；Evaporimeter, compressor, condenser, reservoir, refrigerant circulation pump and electric expansion valve pass through pipeline
It is sequentially connected composition closed circuit, be connected by the first bypass line between evaporimeter and condenser, reservoir and electronic expansion
Pass through the second bypass line between valve to be connected；Described refrigeration compressor, condenser, reservoir, electric expansion valve and evaporimeter group
Become cooling by wind cooling cycle system, described condenser, reservoir, refrigerant circulation pump and evaporimeter composition natural cooling source
Cooling cycle system.
In a particular embodiment, the pipeline between described reservoir and electric expansion valve is provided with for switching cold-producing medium
Circulating pump place pipeline and the valve member of the second bypass line；Pipeline between described refrigeration compressor and condenser, and evaporation
The valve member of control piper on or off is respectively equipped with the pipeline between device and condenser.
In a particular embodiment, described refrigerant circulation pump is connected with evaporimeter by the 3rd bypass line, this pipeline
It is provided with the valve member of control piper on or off.
Preferably, described refrigeration compressor adopts separate unit or multiple stage frequency or frequency-changeable compressor surely.
Preferably, described refrigerant circulation pump uses fixed frequency or frequency conversion drive, using single pump or double pump backup mode.
Preferably, the blower fan of described condenser adopts speed change or variable frequency adjustment blower fan.
The control method of described new natural cold source refrigerating system, the method passes through environment temperature and evaporimeter freezes water outlet
Temperature and environment temperature difference judge to realize enabling and closing of natural cooling source pattern and electricity refrigeration mode, and introduce return water temperature
Carry out auxiliary judgment with environment temperature difference, realize enabling and closing of hybrid refrigeration pattern.
Preferably, described control method is according to regular implementation pattern switching as follows：
Electric refrigeration mode：Refrigeration system fault-free, do not have the hand-operated forced instruction only operating in natural cooling source pattern and from
Dynamic request instruction；Then electric refrigeration mode enables；
Hybrid refrigeration pattern：When (evaporimeter freezes return water temperature-environment temperature) >=hybrid refrigeration starts the temperature difference, maintenance sets
Fix time, then hybrid refrigeration pattern enables；When (evaporimeter freezes return water temperature-environment temperature) ＜ hybrid refrigeration closes the temperature difference,
Maintain setting time, then hybrid refrigeration pattern is closed；
Natural cooling source pattern：When environment temperature≤(evaporimeter freezing leaving water temperature-natural cooling source starts deviation), maintenance sets
Fix time；Then force natural cooling source pattern to enable, force electric refrigeration mode to be closed simultaneously；
When actual evaporator freezes leaving water temperature >=evaporimeter+1 DEG C of water outlet temperature setting value of freezing, maintain setting time；
Or environment temperature >=evaporimeter freezing water outlet temperature setting value, maintain setting time；Natural cooling source pattern is then forced to be closed, simultaneously
Electric refrigeration mode enables.
Beneficial effect：The new natural cold source refrigerating system that the present invention provides passes through to control switching can realize 3 kinds of operations
Pattern：Electric refrigeration mode, natural cooling source pattern and mixed mode (electricity refrigeration is combined with natural cooling source).Electric refrigeration mode and tradition
Natural cooling source cooling by wind kind of refrigeration cycle is identical, but contrasts traditional natural low-temperature receiver Application way, and condenser does not comprise nature
Low-temperature receiver coil pipe, thus reducing the loss of condenser wind collateral resistance, can select more small-power wind under same refrigeration and efficiency effect
Machine, thus reducing operation power, improves efficiency, because heat exchanger reduces half, thus reducing material cost.Natural cooling source pattern
Under, refrigerant circulation pump replaces compressor to provide refrigeration system circulation power, compared with traditional pure water scheme, saves intermediate heat transfer
The heat exchange loss of device, saves natural cooling source system pipeline and anti-icing fluid.Under mixed mode, in environment temperature, 20 degree can enter
Mixed mode, needs contrast freezing return water temperature could enter mixed mode higher than environment temperature with traditional scheme, according to current
16 degree of the backwater that data center commonly uses accounts for, and it enters mixed mode is also at least 15 degree, cold such that it is able to realize nature
The making full use of of source.
Compared with prior art, the new natural cold source refrigerating system of the present invention adopts cold-producing medium as circulatory mediator, has
There are glycol solutions and the advantage of pure water scheme, system does not need to carry out special antifreeze process, natural cooling source direct heat transfer, effect
Rate is high, and the whole pipeline circulatory system is using pure water it is ensured that end system heat exchange efficiency and safeguard convenience；It is omitted nature cold
Source tray pipe, provides natural cooling source by condenser；Save Intermediate Heat Exchanger, thus reduces cost and maintenance complexity.
Brief description
Fig. 1 is the systematic schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the systematic schematic diagram of the embodiment of the present invention 2.
Fig. 3 is the systematic schematic diagram of the embodiment of the present invention 3.
Fig. 4 is the systematic schematic diagram of the embodiment of the present invention 4.
In figure, 1- condenser, 2- reservoir, 3- refrigerant circulation pump, 4a, 4b- the 4th valve member, 4b- check valve, 5- electronics
Expansion valve, 6- evaporimeter, 7- refrigeration compressor, 8- first valve member, 8a- the 3rd valve member, 9- second valve member.
Specific embodiment
With reference to specific embodiment, it is further elucidated with the present invention it should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention, after having read the present invention, the various equivalences to the present invention for the those skilled in the art
The modification of form all falls within the application claims limited range.
Embodiment 1
As shown in figure 1, a kind of new natural cold source refrigerating system disclosed in the embodiment of the present invention, including condenser 1, liquid storage
Device 2, refrigerant circulation pump 3, electric expansion valve 5, evaporimeter 6 and refrigeration compressor 7；Evaporimeter 6, compressor 7, condenser 1, storage
Liquid device 2, refrigerant circulation pump 3 and electric expansion valve 5 are sequentially connected composition closed circuit, evaporimeter 6 and condenser 1 by pipeline
Between by first bypass line be connected；It is connected by the second bypass line between reservoir 2 and electric expansion valve 5.Refrigeration pressure
Contracting machine 7, condenser 1, reservoir 2, electric expansion valve 5 and evaporimeter 6 composition cooling by wind cooling cycle system, condenser
1st, reservoir 2, refrigerant circulation pump 3 and evaporimeter 6 composition natural cooling source cooling cycle system.First bypass line is provided with
One valve member 8 (can be electric two-way valve or magnetic valve), the pipeline between refrigeration compressor 7 and condenser 1 is provided with the second valve
Part 9 (can be check valve or electronic shut-off valve).Reservoir 2 (is rotated by motor, Ke Yishi by electric T-shaped valve 4
Existing A-AB with A-B flow direction conducting) it is connected with refrigerant circulation pump 3 place pipeline and the second bypass line respectively.
Compressor can be using different types, including screw compressor, helical-lobe compressor, centrifugal compressor
Deng wherein using during with lubrication oil circulation compressor, needing in refrigerant system configuration oil eliminator, and arrange reliable oil return
System；When using non-lubricated compressor, (magnetic suspension centrifugal compressor) does not need to configure oil eliminator.In order to improve unit
In part-load efficiency, frequency conversion can be used to compressor, thus obtaining more preferable efficiency；Compressor can also for separate unit
For multiple stage combination.
Refrigerant circulation pump 3 is natural cooling source system drive power, for improving natural cooling source efficiency and regulating working conditions ability,
Frequency conversion drive being used to refrigerant circulation pump 3, for improving system reliability, double pump backup mode being adopted, thus realizing 1
Standby with 1.
Condenser 1 can use multi-form, and as the core component of natural cooling source and condensing heat-exchange, condenser 1 is permissible
Using the different structure form such as copper pipe aluminum fin, microchannel, in order to adapt to Load Regulation, blower fan using speed change and can become frequency modulation
Section.
Evaporimeter 6 can use multi-form, including full-liquid type, falling film type, dry type, bushing type etc., wherein using full
When liquid formula and downward film evaporator 6, level sensing signal can be set, thus control refrigerant circulation pump 3 running frequency or
The aperture of person's electric expansion valve 5, thus reach the control of cooling load change.
The refrigeration system of the present embodiment realizes electric refrigeration mode, natural cooling source pattern and mixed mode 3 by switching control
The specific workflow of middle operational mode is as follows：
1st, natural cooling source pattern：Electric T-shaped valve 4A-AB flow direction conducting, refrigeration compressor 7 does not work, and the second valve member 9 closes
Disconnected, the first valve member 8 is opened.Refrigerant circulation flows to and is：Refrigerant circulation pump 3- electric expansion valve 5- evaporimeter 6- the first valve member
8- condenser 1- reservoir 2- electric T-shaped valve 4 (A-AB flow direction)-refrigerant circulation pump 3.
2nd, hybrid refrigeration pattern：Electric T-shaped valve 4A-AB flow direction conducting, refrigeration compressor 7 works, and the first valve member 8 turns off,
Second valve member 9 is opened.Refrigerant circulation flows to and is：Refrigeration compressor 7- the second valve member 9- condenser 1- reservoir 2- electric three passes
Valve 4 (A-AB flow direction)-refrigerant circulation pump 3- electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
3rd, electric refrigeration mode：Electric T-shaped valve 4A-B flow direction conducting, refrigerant circulation pump 3 does not work, refrigeration compressor 7 work
Make, the first valve member 8 turns off, and the second valve member 9 is opened.Refrigerant circulation flows to and is：Refrigeration compressor 7- the second valve member 9- condenser
1- reservoir 2- electric T-shaped valve 4 (A-B flow direction)-electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
Embodiment 2
As shown in Fig. 2 a kind of new natural cold source refrigerating system disclosed in the embodiment of the present invention, with the area in embodiment 1
It is not that refrigerant circulation pump 3 is connected with evaporimeter 6 by the 3rd bypass line, this pipeline is provided with the 3rd valve member 8a, refrigeration system
The throttling of refrigerant liquid when system is operated in natural cooling source pattern, is realized by the running frequency controlling refrigerant circulation pump 3.With
The workflow of the corresponding 3 kinds of operational modes of the present embodiment is as follows：
1st, natural cooling source pattern：Electric T-shaped valve 4A-AB flow direction conducting, refrigeration compressor 7 does not work, and the second valve member 9 closes
Disconnected, the first valve member 8 is opened, electronic throttle valve breakdown, and the 3rd valve member 8a opens.Refrigerant circulation flows to and is：Refrigerant circulation pump
3- the 3rd valve member 8a- evaporimeter 6- the first valve member 8- condenser 1- reservoir 2- electric T-shaped valve 4 (A-AB flow direction)-cold-producing medium follows
Ring pump 3.
2nd, hybrid refrigeration pattern：Electric T-shaped valve 4A-AB flow direction conducting, refrigeration compressor 7 works, and the first valve member 8 turns off,
Second valve member 9 is opened, and the 3rd valve member 8a turns off.Refrigerant circulation flows to and is：Refrigeration compressor 7- the second valve member 9- condenser 1-
Reservoir 2- electric T-shaped valve 4 (A-AB flow direction)-refrigerant circulation pump 3- electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
3rd, electric refrigeration mode：Electric T-shaped valve 4A-B flow direction conducting, refrigerant circulation pump 3 does not work, refrigeration compressor 7 work
Make, the first valve member 8 turns off, and the second valve member 9 is opened, the 3rd valve member 8a turns off.Refrigerant circulation flows to and is：Refrigeration compressor 7-
Two valve member 9- condenser 1- reservoir 2- electric T-shaped valve 4 (A-B flow direction)-electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
Embodiment 3
As shown in figure 3, a kind of new natural cold source refrigerating system disclosed in the embodiment of the present invention, with the area in embodiment 1
It is not to set the 4th valve member respectively on the refrigerated medium pump place pipeline between reservoir 2 and electric expansion valve 5 and the second bypass line
4a, 4b (can be check valve or electronic shut-off valve), realize the conducting of two pipelines by controlling this two valve member switching controls
With shutoff.The workflow of 3 kind operational modes corresponding with the present embodiment is as follows：
1st, natural cooling source pattern：Refrigeration compressor 7 does not work, and the second valve member 9 turns off, and the first valve member 8 is opened, and valve member 4a closes
Disconnected, valve member 4b opens.Refrigerant circulation flows to and is：Refrigerant circulation pump 3- valve member 4b- electric expansion valve 5- evaporimeter 6- first
Valve member 8- condenser 1- reservoir 2- refrigerant circulation pump 3.
2nd, hybrid refrigeration pattern：Refrigeration compressor 7 works, and the first valve member 8 turns off, and the second valve member 9 is opened, and valve member 4a closes
Disconnected, valve member 4b opens.Refrigerant circulation flows to and is：Refrigeration compressor 7- the second valve member 9- condenser 1- reservoir 2- cold-producing medium follows
Ring pump 3- valve member 4b- electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
3rd, electric refrigeration mode：Electric T-shaped valve 4A-B flow direction conducting, refrigerant circulation pump 3 does not work, refrigeration compressor 7 work
Make, the first valve member 8 turns off, and the second valve member 9 is opened, and valve member 4a opens, valve member 4b closes.Refrigerant circulation flows to and is：Refrigeration pressure
Contracting machine 7- the second valve member 9- condenser 1- reservoir 2- valve member 4a- electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
Embodiment 4
As shown in figure 4, a kind of new natural cold source refrigerating system disclosed in the embodiment of the present invention, with the area in embodiment 3
It is not that refrigerant circulation pump 3 is connected with evaporimeter 6 by the 3rd bypass line, this pipeline is provided with the 3rd valve member 8a, refrigeration system
The throttling of refrigerant liquid when system is operated in natural cooling source pattern, is realized by the running frequency controlling refrigerant circulation pump 3.With
The workflow of the corresponding 3 kinds of operational modes of the present embodiment is as follows：
1st, natural cooling source pattern：Refrigeration compressor 7 does not work, and the second valve member 9 turns off, and the first valve member 8 is opened, electronic throttle
Valve breakdown, the 3rd valve member 8a opens, and valve member 4a turns off, and valve member 4b opens.Refrigerant circulation flows to and is：Refrigerant circulation pump 3- valve
Part 4b- the 3rd valve member 8a- evaporimeter 6- the first valve member 8- condenser 1- reservoir 2- refrigerant circulation pump 3.
2nd, hybrid refrigeration pattern：Refrigeration compressor 7 works, and the first valve member 8 turns off, and the second valve member 9 is opened, the 3rd valve member 8a
Turn off, valve member 4a turns off, valve member 4b opens.Refrigerant circulation flows to and is：Refrigeration compressor 7- the second valve member 9- condenser 1- stores up
Liquid device 2- refrigerant circulation pump 3- valve member 4b- electric expansion valve 5- evaporimeter 6- refrigeration compressor 7.
3rd, electric refrigeration mode：Refrigerant circulation pump 3 does not work, and refrigeration compressor 7 works, and the first valve member 8 turns off, the second valve
Part 9 is opened, and the 3rd valve member 8a turns off, and valve member 4a opens, and valve member 4b closes.Refrigerant circulation flows to and is：Refrigeration compressor 7-
Two valve member 9- condenser 1- reservoir 2- valve member 4a- electric expansion valve 5- evaporimeter 6- refrigeration compressors 7.
Embodiment 5
Mode decision is the most key for natural coldness resource utilizing and energy-conservation, and the prolongation natural coldness resource utilizing time can effectively drop
Low unit power consumption, thus reduce operating cost；Traditional natural low-temperature receiver, is examined by the use of frequently with environment temperature as switching standards at present
Consider evaporimeter freezing temperature during user uses and set difference that may be present, generally require to arrange relatively low temperature conduct
Mode switch points.Control method for new natural cold source refrigerating system disclosed in the problem above embodiment of the present invention is passed through to draw
Enter evaporimeter freezing return water temperature assisted with environment temperature difference, combining environmental temperature and evaporimeter freezing leaving water temperature and
Environment temperature difference is thus the accurate switching of implementation pattern.The concrete switching judging rule of 3 kinds of patterns is as follows：
Electric refrigeration mode：
1. refrigeration system fault-free
2. there is not the hand-operated forced instruction only operating in natural cooling source pattern
3. there is not the automatic request instruction only operating in natural cooling source pattern
Then judge that electric refrigeration mode comes into force.
Hybrid refrigeration pattern：
1. (evaporimeter freezes return water temperature-environment temperature) >=hybrid refrigeration starts the temperature difference (0 DEG C of acquiescence, can set)
2. (evaporimeter freezes return water temperature-environment temperature) ＜ hybrid refrigeration closes the temperature difference (- 3 DEG C of acquiescence, can set)
3. the temperature difference sentences the steady time (acquiescence 10 minutes, can set)
Meet condition 1. 3. when, then hybrid refrigeration pattern enables；Meet condition 2. 3. when, then hybrid refrigeration pattern close,
According to the various embodiments described above specifically each valve state switch valve.
When electric refrigeration mode fault, hybrid refrigeration mode operation, when natural cooling source persistently cannot provide enough low-temperature receivers, point out
Natural cooling source is not enough.
Natural cooling source pattern：
When environment temperature≤(evaporimeter freezing leaving water temperature-natural cooling source starts deviation) (deviation gives tacit consent to 3 DEG C, can set),
Maintain 5 minutes；Then force natural cooling source pattern to enable, force electric refrigeration mode to be closed simultaneously.
When actual evaporator freezes leaving water temperature >=evaporimeter+1 DEG C of water outlet temperature setting value of freezing, maintain 5 minutes；Or ring
Border temperature >=evaporimeter freezing water outlet temperature setting value, maintains 5 minutes；Natural cooling source pattern is then forced to be closed, electricity refrigeration simultaneously
Pattern enables.
Claims (8)
1. a kind of new natural cold source refrigerating system is it is characterised in that include condenser, reservoir, refrigerant circulation pump, electronics
Expansion valve, evaporimeter and refrigeration compressor；Evaporimeter, compressor, condenser, reservoir, refrigerant circulation pump and electronic expansion
Valve is sequentially connected composition closed circuit by pipeline, is connected by the first bypass line between evaporimeter and condenser, reservoir
It is connected by the second bypass line between electric expansion valve；Described refrigeration compressor, condenser, reservoir, electric expansion valve
Form cooling by wind cooling cycle system, described condenser, reservoir, refrigerant circulation pump and evaporimeter group with evaporimeter
Become natural cooling source cooling cycle system.
2. new natural cold source refrigerating system according to claim 1 is it is characterised in that described reservoir and electronic expansion
Pipeline between valve is provided with the valve member for switching refrigerant circulation pump place pipeline and the second bypass line；Described refrigeration pressure
Control piper conducting is respectively equipped with the pipeline between contracting machine and condenser, and the pipeline between evaporimeter and condenser or closes
Disconnected valve member.
3. new natural cold source refrigerating system according to claim 2 is it is characterised in that described refrigerant circulation pump passes through
3rd bypass line is connected with evaporimeter, and this pipeline is provided with the valve member of control piper on or off.
4. new natural cold source refrigerating system according to claim 1 is it is characterised in that described refrigeration compressor is using single
Platform or multiple stage frequency or frequency-changeable compressor surely.
5. new natural cold source refrigerating system according to claim 1 is it is characterised in that described refrigerant circulation pump uses
Fixed frequency or frequency conversion drive, using single pump or double pump backup mode.
6. new natural cold source refrigerating system according to claim 1 is it is characterised in that the blower fan of described condenser adopts
Speed change or variable frequency adjustment blower fan.
7. the control method of the new natural cold source refrigerating system according to any one of claim 1-6 is it is characterised in that institute
State control method to judge to realize natural cooling source pattern with environment temperature difference by environment temperature and evaporimeter freezing leaving water temperature
With the enabling and closing of electric refrigeration mode, and introduce evaporimeter freezing return water temperature and carry out auxiliary judgment with environment temperature difference,
Realize enabling and closing of hybrid refrigeration pattern.
8. new natural cold source refrigerating system according to claim 7 control method it is characterised in that：Described controlling party
Method is according to regular implementation pattern switching as follows：
Electric refrigeration mode：Refrigeration system fault-free, does not have the hand-operated forced instruction only operating in natural cooling source pattern and automatically please
Ask instruction；Then electric refrigeration mode enables；
Hybrid refrigeration pattern：When（Evaporimeter freezes return water temperature-environment temperature）>=hybrid refrigeration starts the temperature difference, when maintaining setting
Between, then hybrid refrigeration pattern enables；When（Evaporimeter freezes return water temperature-environment temperature）＜ hybrid refrigeration closes the temperature difference, maintains
Setting time, then hybrid refrigeration pattern closing；
Natural cooling source pattern：When environment temperature≤（Evaporimeter freezing leaving water temperature-natural cooling source starts deviation）, when maintaining setting
Between；Then force natural cooling source pattern to enable, force electric refrigeration mode to be closed simultaneously；
When actual evaporator freezes leaving water temperature >=evaporimeter+1 DEG C of water outlet temperature setting value of freezing, maintain setting time；Or ring
Border temperature >=evaporimeter freezing water outlet temperature setting value, maintains setting time；Natural cooling source pattern is then forced to be closed, electricity system simultaneously
Chill formula enables.
Priority Applications (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900166A (en) * | 2017-03-24 | 2017-06-27 | 广东申菱环境系统股份有限公司 | A kind of liquid gas binary channels shares the cooling system and its control method of natural cooling source |
| CN107062550A (en) * | 2017-04-26 | 2017-08-18 | 青岛海尔空调电子有限公司 | A kind of water chilling unit control method |
| CN107702394A (en) * | 2017-09-21 | 2018-02-16 | 深圳市艾特网能技术有限公司 | A kind of modularization centralized cold source system and its control method |
| CN108917226A (en) * | 2018-08-07 | 2018-11-30 | 郑州云海信息技术有限公司 | A kind of natural cooling source energy-conserving refrigeration system |
| CN108981046A (en) * | 2018-08-17 | 2018-12-11 | 北京中热信息科技有限公司 | A kind of double cold source heat pipe backboard air conditioning multi-couple units |
| WO2019146099A1 (en) * | 2018-01-29 | 2019-08-01 | 三菱電機株式会社 | Air conditioning device |
| EP3627072A1 (en) * | 2018-09-18 | 2020-03-25 | Daikin applied Europe S.p.A. | Cooling system |
| CN111787766A (en) * | 2020-07-09 | 2020-10-16 | 北京中热信息科技有限公司 | Power supplies liquid backward flow formula phase transition heat transfer system |
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| CN113227676A (en) * | 2018-11-16 | 2021-08-06 | 法雷奥热系统公司 | Reversible thermal management device for motor vehicles |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2400678A1 (en) * | 1977-08-18 | 1979-03-16 | Messier Fa | Self contained refrigerator operating with liq. refrigerant bottle - has refrigerant fed to condenser at approximately atmospheric pressure |
| FR2715716A1 (en) * | 1994-02-01 | 1995-08-04 | Bernier Jacques | Energy-saving cold production device, autonomous or integrable in the circuit of refrigeration machines. |
| CN102364256A (en) * | 2011-10-24 | 2012-02-29 | 北京德能恒信科技有限公司 | Single cold heat pipe heat pump air conditioner |
| CN203464396U (en) * | 2013-08-12 | 2014-03-05 | 北京雅驿欣科技有限公司 | Multi-refrigerating-cycle energy-saving air conditioning unit with compact indoor unit structure |
| CN105004092A (en) * | 2015-07-14 | 2015-10-28 | 浪潮电子信息产业股份有限公司 | Phase-change natural cooling container data center refrigerating system |
| CN105066310A (en) * | 2015-09-18 | 2015-11-18 | 南京佳力图空调机电有限公司 | Chilled water type machine room air conditioner of fluorine pump double-circulation natural cold source cold storage system |
| CN105091383A (en) * | 2015-08-18 | 2015-11-25 | 合肥华凌股份有限公司 | Refrigerating device |
| CN105241130A (en) * | 2015-11-19 | 2016-01-13 | 珠海格力电器股份有限公司 | Cooling unit and control method thereof |
| CN205332361U (en) * | 2015-12-24 | 2016-06-22 | 南京佳力图空调机电有限公司 | Novel utilize energy -conserving air conditioner in room separately cooling source indirectly |
| CN106016545A (en) * | 2016-07-06 | 2016-10-12 | 广东海悟科技有限公司 | Power type heat pipe and air conditioner integrated machine |
| CN206377872U (en) * | 2016-11-24 | 2017-08-04 | 南京佳力图机房环境技术股份有限公司 | A kind of new natural cold source refrigerating system |
-
2016
- 2016-11-24 CN CN201611049589.XA patent/CN106440437B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2400678A1 (en) * | 1977-08-18 | 1979-03-16 | Messier Fa | Self contained refrigerator operating with liq. refrigerant bottle - has refrigerant fed to condenser at approximately atmospheric pressure |
| FR2715716A1 (en) * | 1994-02-01 | 1995-08-04 | Bernier Jacques | Energy-saving cold production device, autonomous or integrable in the circuit of refrigeration machines. |
| CN102364256A (en) * | 2011-10-24 | 2012-02-29 | 北京德能恒信科技有限公司 | Single cold heat pipe heat pump air conditioner |
| CN203464396U (en) * | 2013-08-12 | 2014-03-05 | 北京雅驿欣科技有限公司 | Multi-refrigerating-cycle energy-saving air conditioning unit with compact indoor unit structure |
| CN105004092A (en) * | 2015-07-14 | 2015-10-28 | 浪潮电子信息产业股份有限公司 | Phase-change natural cooling container data center refrigerating system |
| CN105091383A (en) * | 2015-08-18 | 2015-11-25 | 合肥华凌股份有限公司 | Refrigerating device |
| CN105066310A (en) * | 2015-09-18 | 2015-11-18 | 南京佳力图空调机电有限公司 | Chilled water type machine room air conditioner of fluorine pump double-circulation natural cold source cold storage system |
| CN105241130A (en) * | 2015-11-19 | 2016-01-13 | 珠海格力电器股份有限公司 | Cooling unit and control method thereof |
| CN205332361U (en) * | 2015-12-24 | 2016-06-22 | 南京佳力图空调机电有限公司 | Novel utilize energy -conserving air conditioner in room separately cooling source indirectly |
| CN106016545A (en) * | 2016-07-06 | 2016-10-12 | 广东海悟科技有限公司 | Power type heat pipe and air conditioner integrated machine |
| CN206377872U (en) * | 2016-11-24 | 2017-08-04 | 南京佳力图机房环境技术股份有限公司 | A kind of new natural cold source refrigerating system |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900166B (en) * | 2017-03-24 | 2023-07-14 | 广东申菱环境系统股份有限公司 | Heat dissipation system with liquid-gas double channels sharing natural cold source and control method thereof |
| CN106900166A (en) * | 2017-03-24 | 2017-06-27 | 广东申菱环境系统股份有限公司 | A kind of liquid gas binary channels shares the cooling system and its control method of natural cooling source |
| CN107062550A (en) * | 2017-04-26 | 2017-08-18 | 青岛海尔空调电子有限公司 | A kind of water chilling unit control method |
| CN107062550B (en) * | 2017-04-26 | 2020-07-07 | 青岛海尔空调电子有限公司 | Control method of water chilling unit |
| CN107702394A (en) * | 2017-09-21 | 2018-02-16 | 深圳市艾特网能技术有限公司 | A kind of modularization centralized cold source system and its control method |
| WO2019146099A1 (en) * | 2018-01-29 | 2019-08-01 | 三菱電機株式会社 | Air conditioning device |
| JPWO2019146099A1 (en) * | 2018-01-29 | 2020-11-19 | 三菱電機株式会社 | Air conditioner |
| CN108917226A (en) * | 2018-08-07 | 2018-11-30 | 郑州云海信息技术有限公司 | A kind of natural cooling source energy-conserving refrigeration system |
| CN108981046A (en) * | 2018-08-17 | 2018-12-11 | 北京中热信息科技有限公司 | A kind of double cold source heat pipe backboard air conditioning multi-couple units |
| EP3627072A1 (en) * | 2018-09-18 | 2020-03-25 | Daikin applied Europe S.p.A. | Cooling system |
| CN113227676A (en) * | 2018-11-16 | 2021-08-06 | 法雷奥热系统公司 | Reversible thermal management device for motor vehicles |
| CN113227676B (en) * | 2018-11-16 | 2023-03-14 | 法雷奥热系统公司 | Reversible thermal management device for motor vehicles |
| KR20210038458A (en) * | 2020-05-15 | 2021-04-07 | 베이징 바이두 넷컴 사이언스 앤 테크놀로지 코., 엘티디. | Refrigeration system |
| EP3910265A1 (en) * | 2020-05-15 | 2021-11-17 | Beijing Baidu Netcom Science And Technology Co. Ltd. | Cooling system |
| US20210360831A1 (en) * | 2020-05-15 | 2021-11-18 | Beijing Baidu Netcom Science And Technology Co., Ltd. | Cooling System |
| JP7223049B2 (en) | 2020-05-15 | 2023-02-15 | ベイジン バイドゥ ネットコム サイエンス テクノロジー カンパニー リミテッド | cooling system |
| JP2021099218A (en) * | 2020-05-15 | 2021-07-01 | 北京百度網訊科技有限公司 | Cooling system |
| US11612082B2 (en) * | 2020-05-15 | 2023-03-21 | Beijing Baidu Netcom Science Technology Co., Ltd. | Cooling system |
| KR102513802B1 (en) * | 2020-05-15 | 2023-03-24 | 베이징 바이두 넷컴 사이언스 앤 테크놀로지 코., 엘티디. | Refrigeration system |
| CN111787766A (en) * | 2020-07-09 | 2020-10-16 | 北京中热信息科技有限公司 | Power supplies liquid backward flow formula phase transition heat transfer system |
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