CN104913541B - Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method - Google Patents
Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method Download PDFInfo
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- CN104913541B CN104913541B CN201510269444.XA CN201510269444A CN104913541B CN 104913541 B CN104913541 B CN 104913541B CN 201510269444 A CN201510269444 A CN 201510269444A CN 104913541 B CN104913541 B CN 104913541B
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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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
Abstract
The invention discloses a kind of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method.It includes sterlin refrigerator and vapor compression refrigerator.Wherein sterlin refrigerator includes compression piston, compression chamber, condenser/evaporator, regenerator, cool end heat exchanger, expansion chamber, pushing piston, and vapor compression refrigerator includes compressor, condenser, choke valve, condenser/evaporator.Cold fluid is the working medium of Vapor Compression Refrigeration Cycle in condenser/evaporator, and hot fluid is the working medium of Stirling cycle, and the two passes through the wall heat-shift of heat exchanger.The present invention directly cools down the working medium of Stirling cycle using Vapor Compression Refrigeration Cycle working medium, compared with the method cooled down using refrigerating medium, can substantially reduce the mean temperature of working medium in condenser/evaporator, lifts the performance of Stirling cycle.Meanwhile, the invention simplifies heat exchange process, reduces the attached current consuming apparatus of condenser/evaporator, is improved the refrigerating efficiency of whole system.
Description
Technical field
The present invention relates to regenerating type low-temperature refrigerator, more particularly to a kind of Stirling cycle and Vapor Compression Refrigeration Cycle it is straight
Connect the refrigeration machine and method of coupling.
Technical background
The application of high temperature superconductor technology and small-sized low-temperature liquefaction device is greatly promoted the fast of high-power Cryo Refrigerator
Speed development.Sterlin refrigerator has the features such as efficiency high, cooldown rate are fast, refrigeration temperature levels are wide, and its technology is relative
Ripe, cost is relatively low, is the hundred, first-selected type of multikilowatt refrigerating plant.
Sterlin refrigerator application Stirling cycle obtains refrigerating capacity, and Stirling cycle is by isotherm compression, isothermal expansion
Waited with two and hold the enclosed thermodynamic cycle that heat recovery process is constituted.The heat of compression that isotherm compression is produced quilt in indoor temperature end heat exchanger
Refrigerating medium is taken away, general to be used as refrigerating medium using water.The heat of compression is larger in High cooling power refrigeration machine, because cooling water specific heat has
Limit, causing water cooler to import and export water temperature has the larger temperature difference, i.e. average temperature to be higher than inflow temperature.Experiment and theory are all proved, cold
But water temperature rise can cause regenerator hot-side temperature to raise, and cause refrigeration machine hydraulic performance decline.So taking measures to reduce cooling water
Temperature is critically important for refrigeration machine performance boost.
Generally sterlin refrigerator hot junction is cooled down using handpiece Water Chilling Units.Sterlin refrigerator water cooler, water tank, pump
Circulation waterway is constituted with pipeline, the Stirling cycle heat of compression is cooled down.Water tank, compression refrigerating machine, pump and pipeline constitute recirculated water
Road, cooling water tank heat.Sterlin refrigerator and its auxiliary device are considered that Overall Power Consumption includes water tank refrigeration machine as overall
And pipeline wasted work, the refrigerating efficiency of sterlin refrigerator system can be effectively improved by reducing power consumption at this.
The content of the invention
Followed it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of Stirling cycle and vapor compression refrigeration
The direct-coupled refrigeration machine of ring and method.
The purpose of the present invention is achieved through the following technical solutions：
Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle include sterlin refrigerator and vapour pressure
Compression type refrigerating machine, sterlin refrigerator is changed including the compression piston being sequentially connected with, compression chamber, condenser/evaporator, regenerator, cold end
Hot device, expansion chamber, pushing piston, vapor compression refrigerator include the compressor being sequentially connected with, condenser, choke valve, condensation
Evaporator.
Described condenser/evaporator uses dividing wall type heat exchanger structure.
Stirling cycle and the direct-coupled refrigerating method of Vapor Compression Refrigeration Cycle are：Compression piston is moved up, compression chamber
Interior Stirling cycle working medium A is compressed, energy rise, is flowed into condenser/evaporator, is discharged to Vapor Compression Refrigeration Cycle working medium B
The heat of compression, realizes working medium A isotherm compression process；Working medium B absorbed heat in condenser/evaporator evaporation after enter compressor, be pressurized
After heating enter condenser, to Environmental cold source exothermic condensation after enter choke valve, pressure decline, the liquid refrigerant B of low-temp low-pressure
Condenser/evaporator heat absorption evaporation is again introduced into, Vapor Compression Refrigeration Cycle loop is formed.Working medium A after the release heat of compression enters back
Hot device, transfers heat to filler, and temperature streamwise is gradually reduced, the receiving thermal process such as realization；Pushing piston is moved up, swollen
Swollen intracavitary working medium A expansion, energy reduction, by cool end heat exchanger from low-temperature receiver absorb heat, obtain refrigerating capacity, realize working medium A etc.
Warm expansion process；Working medium A reverse flows, into regenerator, from filler heat absorption, temperature streamwise gradually rises, realize etc.
Hold endothermic process.Working medium A reciprocal flowing forms Stirling cycle loop；Cold fluid is vapor compression refrigeration in condenser/evaporator
Cycle fluid B, hot fluid is Stirling cycle working medium A, and two fluids carries out heat exchange by the wall that exchanges heat, using working medium B's
The compression heat that the direct cooling working medium A of phase transformation discharges in Stirling cycle.
Compound profound hypothermia refrigeration machine proposed by the present invention, the phase-change heat-exchange using Vapor Compression Refrigeration Cycle working medium B is straight
Connect the compression heat of cooling Stirling cycle.Compared with conventional handpiece Water Chilling Units cooling means：1. Vapor Compression Refrigeration Cycle work
Matter B（Cooling medium）Latent heat be more than water specific heat capacity, then cool down equivalent the heat of compression and cooling medium inlet temperature is consistent
When, cooling medium mean temperature is relatively low in condenser/evaporator in the present invention, and regenerator hot-side temperature is relatively low, refrigeration performance lifting；
2. simplify the heat transfer process of Vapor Compression Refrigeration Cycle working medium and cooling water, cooling water and Stirling cycle working medium, it is to avoid
It is related to the leakage heat of the heat transfer process and water tank of cooling water in itself, so the wasted work of compressor drops when cooling down the equal heat of compression
Low, the refrigerating efficiency of whole system is improved；3. simplify refrigeration machine condenser/evaporator（Indoor temperature end heat exchanger）Auxiliary device, keep away
Waterway circulating is exempted from, due to eliminating the power consumption of water pump, so the wasted work of compressor is reduced when cooling down the equal heat of compression, entirely
The refrigerating efficiency of system is improved.
Brief description of the drawings
Fig. 1 is the structural representation of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle.
Embodiment
As shown in figure 1, Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle include stirling refrigeration
Machine and vapor compression refrigerator, sterlin refrigerator include be sequentially connected with compression piston 1, compression chamber 2, condenser/evaporator 3,
Regenerator 4, cool end heat exchanger 5, expansion chamber 6, pushing piston 7, vapor compression refrigerator include be sequentially connected with compressor 8,
Condenser 9, choke valve 10, condenser/evaporator 3.
Described condenser/evaporator 3 uses dividing wall type heat exchanger structure.Refrigeration machine driver element can using electric rotating machine with
Toggle.
The refrigerating method that Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle are used is：Compression piston
1 is moved up, and the Stirling cycle working medium A in compression chamber 2 is compressed, energy rise, condenser/evaporator 3 is flowed into, to vapour pressure contraction
SAPMAC method working medium B discharges the heat of compression, realizes working medium A isotherm compression process；Working medium B is absorbed heat in condenser/evaporator 3 after evaporation
Into compressor 8, entered condenser 9 after supercharging heating, to Environmental cold source exothermic condensation after enter under choke valve 10, pressure
Drop, the liquid refrigerant B of low-temp low-pressure is again introduced into the heat absorption evaporation of condenser/evaporator 3, forms Vapor Compression Refrigeration Cycle loop.Release
The working medium A after the heat of compression is put into regenerator 4, filler is transferred heat to, temperature streamwise is gradually reduced, realization etc. is held
Exothermic process；Pushing piston 7 is moved up, and the working medium A expansions in expansion chamber 6, energy reduction is inhaled by cool end heat exchanger 5 from low-temperature receiver
Heat, obtains refrigerating capacity, realizes working medium A isothermal expansion process；Working medium A reverse flows, into regenerator 4, from filler heat absorption, temperature
Degree streamwise gradually rises, and endothermic process is held in realization etc..Working medium A reciprocal flowing forms Stirling cycle loop；Condensation
Cold fluid is Vapor Compression Refrigeration Cycle working medium B in evaporator 3, and hot fluid is Stirling cycle working medium A, and two fluids is by changing
Hot wall face carries out heat exchange, the compression heat discharged using the direct cooling working medium A of working medium B phase transformation in Stirling cycle.This
Special woods cycle fluid A typically uses high-pressure helium, hydrogen or nitrogen, and Vapor Compression Refrigeration Cycle working medium B is typically using fluorine profit
It is high to wait air-conditioning refrigerant.
Claims (3)
1. a kind of Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle, it is characterised in that including Stirling system
Cold and vapor compression refrigerator, sterlin refrigerator include the compression piston being sequentially connected with（1）, compression chamber（2）, condensation steam
Send out device（3）, regenerator（4）, cool end heat exchanger（5）, expansion chamber（6）, pushing piston（7）, vapor compression refrigerator includes suitable
The compressor of secondary circulation connection（8）, condenser（9）, choke valve（10）, condenser/evaporator（3）；Described condenser/evaporator（3）
Middle cold fluid is Vapor Compression Refrigeration Cycle working medium, and hot fluid is Stirling cycle working medium, and two fluids is entered by the wall that exchanges heat
Row heat exchange, the compression heat discharged using the direct cooling working medium of the phase transformation of working medium in Stirling cycle.
2. a kind of Stirling cycle according to claim 1 and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle, its
It is characterised by：Described condenser/evaporator（3）Using dividing wall type heat exchanger structure.
3. a kind of system using Stirling cycle as claimed in claim 1 and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle
Cooling method, it is characterised in that compression piston（1）Move up, compression chamber（2）Interior Stirling cycle working medium A is compressed, energy rise,
Flow into condenser/evaporator（3）, the heat of compression is discharged to Vapor Compression Refrigeration Cycle working medium B, working medium A isotherm compression process is realized；
Working medium B is in condenser/evaporator（3）Enter compressor after middle heat absorption evaporation（8）, entered condenser after supercharging heating（9）, Xiang Huan
Enter choke valve after the low-temperature receiver exothermic condensation of border（10）, pressure declines, and the liquid refrigerant B of low-temp low-pressure is again introduced into condenser/evaporator
（3）Heat absorption evaporation, the working medium A formed after Vapor Compression Refrigeration Cycle loop, the release heat of compression enters regenerator（4）, by heat
Filler is passed to, temperature streamwise is gradually reduced, the receiving thermal process such as realization；Pushing piston（7）Move up, expansion chamber（6）
Interior working medium A expansions, energy reduction passes through cool end heat exchanger（5）From low-temperature receiver heat absorption, refrigerating capacity is obtained, working medium A isothermal is realized
Expansion process；Working medium A reverse flows, into regenerator（4）, from filler heat absorption, temperature streamwise gradually rises, realize etc.
Hold endothermic process, working medium A reciprocal flowing forms Stirling cycle loop；Condenser/evaporator（3）Middle cold fluid is steam compressed
Kind of refrigeration cycle working medium B, hot fluid is Stirling cycle working medium A, and two fluids carries out heat exchange by the wall that exchanges heat, using working medium
The compression heat that the B direct cooling working medium A of phase transformation discharges in Stirling cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510269444.XA CN104913541B (en) | 2015-03-09 | 2015-05-25 | Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method |
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| CN201510101760 | 2015-03-09 | ||
| CN2015101017606 | 2015-03-09 | ||
| CN201510269444.XA CN104913541B (en) | 2015-03-09 | 2015-05-25 | Stirling cycle and the direct-coupled refrigeration machine of Vapor Compression Refrigeration Cycle and method |
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| CN104913541A CN104913541A (en) | 2015-09-16 |
| CN104913541B true CN104913541B (en) | 2017-07-28 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273779A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system based on phase-change material |
| CN110273780A (en) * | 2018-03-13 | 2019-09-24 | 浙江大学 | Regenerator and stirling cycle system with accumulation of heat shell |
| CN108444126B (en) * | 2018-04-09 | 2023-09-22 | 杨厚成 | Overlapping type acoustic energy refrigerator |
| CN110160378B (en) * | 2019-04-25 | 2020-11-03 | 南华大学 | Breathing heat exchange device and heat exchange method based on phase change heat absorber |
| CN115111843A (en) * | 2022-06-27 | 2022-09-27 | 西安交通大学 | Coupled multi-temperature-zone refrigerating system |
| CN115325717B (en) * | 2022-10-14 | 2023-01-31 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
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| JP3620575B2 (en) * | 1999-04-15 | 2005-02-16 | シャープ株式会社 | Stirling refrigerator |
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| CN1447890A (en) * | 2000-08-25 | 2003-10-08 | 夏普公司 | Stirling cooling device, cooling chamber, and refrigerator |
| CN2548088Y (en) * | 2002-05-30 | 2003-04-30 | 吴守艮 | New-type energy-saving refrigerating air conditioner |
| EP1818628A2 (en) * | 2006-02-11 | 2007-08-15 | Bruker BioSpin AG | Hybrid heat pump / refrigeration apparatus with magnetic cooling stage |
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