CN104976811A - Dual-ejection refrigeration system - Google Patents
Dual-ejection refrigeration system Download PDFInfo
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- CN104976811A CN104976811A CN201410125291.7A CN201410125291A CN104976811A CN 104976811 A CN104976811 A CN 104976811A CN 201410125291 A CN201410125291 A CN 201410125291A CN 104976811 A CN104976811 A CN 104976811A
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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
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
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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
- 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
- F25B41/00—Fluid-circulation arrangements
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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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0015—Ejectors not being used as compression device using two or more ejectors
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a dual-ejection refrigeration system comprising a first gas-gas ejector and a second gas-gas ejector, a condenser, an evaporator, a throttle valve, a circulating pump and a generator; the first gas-gas ejector is connected in series with the condenser, the circulating pump and the generator in sequence so as to form a power cycle loop1; the second gas-gas ejector is connected in series with the first gas-gas ejector, the condenser, the throttle valve and the evaporator in sequence so as to form a refrigeration cycle loop2. Compared with a conventional ejection refrigeration system, the dual-ejection refrigeration system has a higher COP value; the dual-ejection refrigeration system is simple in structure, high in economic property, has great meanings in low grade energy utilization aspect, and can improve various existing ejection refrigeration systems.
Description
Technical field
The invention belongs to refrigeration technology field, specifically a kind of two ejector refrigeration system.
Background technology
In today of energy supply growing tension, by the utilization to the low-grade energy such as solar energy, industrial exhaust heat, carry out freezing and air-conditioning, not only significantly can reduce the consumption of electric energy but also can peak of power consumption be alleviated.Carry out in the system of freezing at the multiple low grade heat energy that utilizes, ejector refrigeration system, owing to having the advantages such as structure is simple, moving component is few, operation expense is low, receives publicity always.
As shown in Figure 7, conventional spray formula refrigeration system is primarily of generator (1), injector (4), condenser (5), evaporimeter (7), choke valve (6), circulating pump (8) composition.Whole refrigeration system is made up of two subcycles: one is the power subcycle completed by working steam, and another is the refrigeration subcycle completed by injection working medium.In generator (1), liquid refrigerant heat absorption vaporization produces saturated vapor, flows into injector (2), low pressure is produced near nozzle, the refrigerant vapour produced in evaporimeter (7) is sucked in injector (4), and mixes in mixing chamber, then boost through convergent-divergent diffuser; Injector (4) mist out enters condenser (5) condensation; Two-way is divided into from condenser (5) liquid refrigerant out, lead up to after choke valve (6) throttling and enter evaporimeter (7) sweat cooling, another road then produces saturated vapor by entering heat absorption vaporization in generator (1) after circulating pump (8) boosting, thus realizes a complete kind of refrigeration cycle.In theoretical circulation, the merit that power subcycle produces, just in time compensate for the merit that refrigeration subcycle consumes.
Only have a gas-gas blowout emitter in traditional ejector refrigeration system, its COP value is lower.In order to improve ejector refrigeration system efficiency, can improve from two aspects.One, further organically combines steam-sprayed refrigeration and other refrigeration modes.Utilize the advantage that ejector refrigeration system structure is simple, easy to operate, reliability is high, spray type refrigerating is combined with the refrigeration modes such as compression-type refrigeration, absorption refrigeration, fully utilize the advantage of steam-sprayed refrigeration and other refrigerating methods, improve the efficiency of whole refrigeration system.Its two, ejector refrigeration system self is optimized.
The present invention proposes a kind of two ejector refrigeration system, substantially increase the COP value of system.
Summary of the invention
The present invention proposes a kind of two ejector refrigeration system, this refrigeration system is by an increase gas-gas blowout emitter, substantially increase the COP value of refrigeration system, enhance economy and the stability of ejector refrigeration system, expand the scope of application of ejector refrigeration system.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of two ejector refrigeration system, comprises the first gas-gas blowout emitter and the second gas-gas blowout emitter two gas-gas blowout emitter, condenser, evaporimeter, choke valve, circulating pump and generator; Described injector is made up of nozzle, mixing chamber, diffuser; The the first described gas-Working-fluid intaking of gas blowout emitter is communicated with the sender property outlet of generator, the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter, and jet exit is communicated with the working medium entrance of condenser; The the second described gas-Working-fluid intaking of gas blowout emitter is communicated with the sender property outlet of generator, and driving fluid entrance is communicated with the sender property outlet of evaporimeter, and jet exit is communicated with the driving fluid entrance of the first gas-gas blowout emitter; The working medium entrance of described restricting element is communicated with the sender property outlet of condenser, and sender property outlet is communicated with the working medium entrance of evaporimeter; The compressed fluid outlet of the working medium entrance of described condenser and the first gas-gas blowout emitter, sender property outlet is communicated with the working medium entrance of restricting element with the working medium entrance of circulating pump.
Refrigeration system of the present invention comprises two loops, is by the first gas-gas blowout emitter loop 1 in series with condenser, circulating pump, generator successively respectively; The loop 2 that second gas-gas blowout emitter is formed with the first gas-gas blowout emitter, condenser, choke valve, evaporator series successively.The workflow of the working medium of refrigeration system of the present invention is: in loop 1, first, working medium becomes high temperature after being heated by external heat source in generator, gases at high pressure, from generator HTHP Working medium gas out as the working fluid injection of the first gas-gas blowout emitter from the compressed fluid of the second gas-gas blowout emitter outlet, and mix in the first gas-gas blowout emitter, diffusion, the compressed fluid of the first gas-gas blowout emitter outlet enters condenser condenses, then condensed Part I condensate liquid is back to generator by circulating pump boosting, loop 1 completes one action circulation, enter next working cycles, in loop 2, HTHP Working medium gas injection from generator carrys out the low temperature of flash-pot, low pressure working fluid, and mix in the second gas-gas blowout emitter, diffusion, the compressed fluid of the second gas-gas blowout emitter outlet is by the first gas-gas blowout emitter injection, and mix in the first gas-gas blowout emitter, diffusion, the compressed fluid of the first gas-gas blowout emitter outlet enters condenser condenses, condensed Part II condensate liquid enters restricting element reducing pressure by regulating flow, working medium after reducing pressure by regulating flow enters gasification refrigeration in generator, loop 2 completes one action circulation, enter next working cycles.
Described restricting element can select the restricting element that refrigerating field is conventional, and conventional restricting element is choke valve or capillary.The optional manual throttle valve of described choke valve or automatic throttle.
The driving heat source choosing multiple thermal source of described generator, such as, can adopt the thermals source such as industrial exhaust heat, solar energy, underground heat.In addition, of the present invention pair of ejector refrigeration system also can be obtained by various existing ejector refrigeration system transformation, and applicability is strong.
Beneficial effect of the present invention is: of the present invention pair of ejector refrigeration system has higher COP value compared with traditional ejector refrigeration system, improve the performance of system, improve the utilization rate of the energy, there is very high economy, there is structure simultaneously simple, with low cost, easy to use, save the advantages such as machine room space.
Accompanying drawing explanation
Fig. 1 is the system flow chart of a kind of embodiment of of the present invention pair of ejector refrigeration system.
Fig. 2 is the system flow chart of the second embodiment of of the present invention pair of ejector refrigeration system.
Fig. 3 is the system flow chart of the third embodiment of of the present invention pair of ejector refrigeration system.
Fig. 4 is the system flow chart of the 4th kind of embodiment of of the present invention pair of ejector refrigeration system.
Fig. 5 is the system flow chart of the 5th kind of embodiment of of the present invention pair of ejector refrigeration system.
Fig. 6 is the system flow chart of the 6th kind of embodiment of of the present invention pair of ejector refrigeration system.
Fig. 7 is the system flow chart of conventional spray formula refrigerating plant.
Fig. 8 is evaporating pressure P
hthe ratio of the embodiment of the present invention 1 and conventional spray formula refrigeration system COP during=1.2KPa.
In figure: 1, generator; 2, the first gas-gas blowout emitter; 3, the first condenser; 4, the second gas-gas blowout emitter; 5, the second condenser; 6, restricting element; 7, evaporimeter; 8, circulating pump.
Detailed description of the invention
Referring to the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1.
As shown in Figure 1, a kind of two ejector refrigeration system, the first gas-gas blowout emitter successively with condenser, circulating pump, generator loop 1 in series; Second gas-gas blowout emitter forms loop 2 with condenser, choke valve, evaporator series successively.
In two ejector refrigeration systems in this embodiment, the concrete annexation of each element is: the Working-fluid intaking of the first gas-gas blowout emitter 2 is communicated with the sender property outlet of generator 1, the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter 4, jet exit is communicated with the working medium entrance of condenser 3; The Working-fluid intaking of the second gas-gas blowout emitter 4 is communicated with the sender property outlet of generator 1, and driving fluid entrance is communicated with the sender property outlet of evaporimeter 7, and jet exit is communicated with the driving fluid entrance of the first gas-gas blowout emitter 2; The working medium entrance of restricting element 6 is communicated with the sender property outlet of condenser 3, and sender property outlet is communicated with the working medium entrance of evaporimeter 7; The compressed fluid outlet of the working medium entrance of condenser 3 and the first gas-gas blowout emitter 2, sender property outlet is communicated with the working medium entrance of restricting element 6 with the working medium entrance of circulating pump 8 respectively.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: refrigeration system of the present invention comprises two loops, is by the first gas-gas blowout emitter 2 loop 1 in series with condenser 3, circulating pump 8, generator 1 successively respectively; The loop 2 that second gas-gas blowout emitter 4 is in series with the first gas-gas blowout emitter 2, condenser 3, choke valve 6, evaporimeter 7 successively.The fluid that generator 1 and condenser 3 export is divided into two parts.The workflow of the working medium of refrigeration system of the present invention is: in loop 1, first, working medium becomes high temperature after being heated by external heat source in generator 1, gases at high pressure, from the compressed fluid that generator 1 Part I HTHP Working medium gas out exports from the second gas-gas blowout emitter 4 as the working fluid injection of the first gas-gas blowout emitter 2, and mix in the first gas-gas blowout emitter 2, diffusion, the compressed fluid that first gas-gas blowout emitter 2 exports enters condenser 3 condensation, then condensed Part I condensate liquid is back to generator 1 by circulating pump boosting, loop 1 completes one action circulation, enter next working cycles, in loop 2, Part II HTHP Working medium gas injection from generator 1 comes low temperature, the low pressure working fluid of flash-pot 7, and in the second gas-gas blowout emitter 4 mix, diffusion, the compressed fluid that second gas-gas blowout emitter 4 exports is entered condenser 3 condensation by the first gas-gas blowout emitter 2 injection, condensed condensate liquid enters restricting element 6 reducing pressure by regulating flow, working medium after reducing pressure by regulating flow enters gasification refrigeration in evaporimeter 7, and loop 2 completes one action circulation, enters next working cycles.
In this embodiment, restricting element 6 may be selected to be choke valve or capillary; The driving heat source of generator 1 can select the various heating sources such as industrial exhaust heat, solar energy, underground heat; Condenser 3 and evaporimeter 7 can select common double pipe heat exchanger, plate type heat exchanger, nest plate type heat exchanger or light pipe immersion heat exchanger; Cycle fluid can select the fluid working substance such as water or various cold-producing mediums.
Embodiment 2.
As shown in Figure 2, a kind of two ejector refrigeration system, be with the difference of the refrigerant system configurations in embodiment 1, the compressed fluid in the first gas-gas blowout emitter 2 exit has two whereabouts, and generator 1 exit fluid only has a whereabouts.Concrete annexation is: the Working-fluid intaking of the first gas-gas blowout emitter 2 is communicated with the sender property outlet of generator 1, the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter 4, jet exit is communicated with the Working-fluid intaking of the second gas-gas blowout emitter 4 with the working medium entrance of condenser 3 respectively; The compressed fluid outlet of the Working-fluid intaking of the second gas-gas blowout emitter 4 and the first gas-gas blowout emitter 2, driving fluid entrance is communicated with the sender property outlet of evaporimeter 7, and jet exit is communicated with the driving fluid entrance of the first gas-gas blowout emitter 2; All the other connected modes are identical with embodiment 1.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: the compressed fluid that the first gas-gas blowout emitter 2 exports is divided into two parts.First, working medium becomes high temperature after being heated by external heat source in generator 1, gases at high pressure, from the compressed fluid that generator 1 HTHP Working medium gas out exports from the second gas-gas blowout emitter 4 as the working fluid injection of the first gas-gas blowout emitter 2, and mix in the first gas-gas blowout emitter 2, diffusion, the Part I compressed fluid that first gas-gas blowout emitter 2 exports enters condenser 3 condensation, Part II compressed fluid injection carrys out the low temperature of flash-pot 7, low pressure working fluid, and mix in the second gas-gas blowout emitter 4, diffusion, the compressed fluid that second gas-gas blowout emitter 4 exports is by the first gas-gas blowout emitter 2 injection.All the other courses of work are with embodiment 1.
Embodiment 3.
As shown in Figure 3, a kind of two ejector refrigeration system, be with the difference of the refrigerant system configurations in embodiment 1, the compressed fluid in the second gas-gas blowout emitter 4 exit has two whereabouts, add a condenser 5 in system, the working medium in condenser 3 exit only has a whereabouts.Concrete annexation is: the Working-fluid intaking of the first gas-gas blowout emitter 2 is communicated with the sender property outlet of generator 1, the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter 4, jet exit is communicated with the working medium entrance of the first condenser 3, and the sender property outlet of the first condenser 3 is communicated with the working medium entrance of circulating pump 8; The Working-fluid intaking of the second gas-gas blowout emitter 4 is communicated with the sender property outlet of generator 1, driving fluid entrance is communicated with the sender property outlet of evaporimeter 7, jet exit is communicated with the working medium entrance of the second condenser 5 with the driving fluid entrance of the first gas-gas blowout emitter 2, and the sender property outlet of the second condenser 5 is communicated with the working medium entrance of restricting element 6; All the other connected modes are identical with embodiment 1.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: the compressed fluid that the second gas-gas blowout emitter 4 exports is divided into two parts.First, working medium becomes high temperature, gases at high pressure after being heated by external heat source in generator 1, from the Part I compressed fluid that generator 1 Part I HTHP Working medium gas out exports from the second gas-gas blowout emitter 4 as the working fluid injection of the first gas-gas blowout emitter 2, and in the first gas-gas blowout emitter 2 mix, diffusion, the compressed fluid that first gas-gas blowout emitter 2 exports enters the first condenser 3 condensation, and condensed condensate liquid is boosted by circulating pump 8.Low temperature, the low pressure working fluid of flash-pot 7 is come from generator 1 Part II HTHP Working medium gas injection out, and in the second gas-gas blowout emitter 4 mix, diffusion, the Part I compressed fluid that second gas-gas blowout emitter 4 exports is by the first gas-gas blowout emitter 2 injection, Part II compressed fluid enters the second condenser 5 condensation, and condensed condensate liquid enters restricting element 6 throttling.All the other courses of work are with embodiment 1.
Embodiment 4.
As shown in Figure 4, a kind of two ejector refrigeration system, be with the difference of the refrigerant system configurations in embodiment 1, the compressed fluid in the first gas-gas blowout emitter 2 and the second gas-gas blowout emitter 4 exit all has two whereabouts, add a condenser 5 in system, the working medium in generator 1 and condenser 3 exit only has a whereabouts.Concrete annexation is: the Working-fluid intaking of the first gas-gas blowout emitter 2 is communicated with the sender property outlet of generator 1, the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter 4, jet exit is communicated with the Working-fluid intaking of the second gas-gas blowout emitter 4 with the working medium entrance of the first condenser 3 respectively, and the sender property outlet of the first condenser 3 is communicated with the working medium entrance of circulating pump 8; The Working-fluid intaking of the second gas-gas blowout emitter 4 is communicated with the jet exit of the first gas-gas blowout emitter 2, driving fluid entrance is communicated with the sender property outlet of evaporimeter 7, jet exit is communicated with the working medium entrance of the second condenser 5 with the driving fluid entrance of the first gas-gas blowout emitter 2, and the sender property outlet of the second condenser 5 is communicated with the working medium entrance of restricting element 6; All the other connected modes are identical with embodiment 1.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: the compressed fluid that the first gas-gas blowout emitter 2 and the second gas-gas blowout emitter 4 export is divided into two parts.First, working medium becomes high temperature after being heated by external heat source in generator 1, gases at high pressure, from the Part I compressed fluid that generator 1 HTHP Working medium gas out exports from the second gas-gas blowout emitter 4 as the working fluid injection of the first gas-gas blowout emitter 2, and mix in the first gas-gas blowout emitter 2, diffusion, the Part I compressed fluid that first gas-gas blowout emitter 2 exports enters the first condenser 3 condensation, condensed condensate liquid is boosted by circulating pump 8, Part II compressed fluid carrys out the low temperature of flash-pot 7 as the work working medium injection of the second gas-gas blowout emitter, low pressure working fluid, and mix in the second gas-gas blowout emitter 4, diffusion, the Part I compressed fluid that second gas-gas blowout emitter 4 exports is by the first gas-gas blowout emitter 2 injection, Part II compressed fluid enters the second condenser 5 condensation, condensed condensate liquid enters restricting element 6 throttling.All the other courses of work are with embodiment 1.
Embodiment 5.
As shown in Figure 5, a kind of two ejector refrigeration system, be with the difference of the refrigerant system configurations in embodiment 1, without circulating pump in refrigeration system, the setting height(from bottom) of condenser 3 is higher than generator 1.Concrete annexation is: the sender property outlet of condenser 3 is communicated with restricting element 6 with generator 1 respectively; All the other connected modes are identical with embodiment 1.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: be divided into two parts by the condensate liquid of condenser 3 condensation, Part I condensate liquid flows back to generator 1 by gravity compensation, realize circulating without pump of ejector refrigeration system, Part II condensate liquid enters restricting element 6.All the other courses of work are with embodiment 1.
Embodiment 6.
As shown in Figure 6, a kind of two ejector refrigeration system, be with the difference of the refrigerant system configurations in embodiment 2, without circulating pump in refrigeration system, the setting height(from bottom) of condenser 3 is higher than generator 1.Concrete annexation is: the sender property outlet of condenser 3 is communicated with restricting element 6 with generator 1 respectively; All the other connected modes are identical with embodiment 1.
In two ejector refrigeration systems in this embodiment, the course of work of cycle fluid is: be divided into two parts by the condensate liquid of condenser 3 condensation, Part I condensate liquid flows back to generator 1 by gravity compensation, realize circulating without pump of ejector refrigeration system, Part II condensate liquid enters restricting element 6.All the other courses of work are with embodiment 1.
Application examples.
Using water as working medium, carried out analog computation respectively to the embodiment of the present invention 1 shown device and conventional spray formula refrigeration system (as shown in Figure 7), supposing the system is in ideal operation state.As shown in Figure 8, at evaporating pressure P
hwhen=1.2KPa, in embodiment 1, the performance of two ejector refrigeration system is with compression ratio P
c/ P
hincrease and improve, as expansion ratio P
p/ P
h=38.6, compression ratio P
c/ P
hwhen=7, the ratio n=1.26 of embodiment 1 and conventional spray formula refrigeration system COP, system COP improves 26%, as compression ratio P
c/ P
hwhen=9, the ratio n=2.09 of embodiment 1 and conventional spray formula refrigeration system COP, system COP improves 109%, substantially increases the performance of ejector refrigeration system, has stronger economy.
Be only the specific embodiment of this patent above, but this patent is not limited thereto, for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, the distortion made should be considered as belonging to scope.
Claims (9)
1. a two ejector refrigeration system, comprises generator (1), the first gas-gas blowout emitter (2), condenser (3), restricting element (6), circulating pump (8) and evaporimeter (7), it is characterized in that: also comprise the second gas-gas blowout emitter (4); The Working-fluid intaking of the first described gas-gas blowout emitter (2) is communicated with the sender property outlet of generator (1), the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter (4), and jet exit is communicated with the working medium entrance of condenser (3); The Working-fluid intaking of the second described gas-gas blowout emitter (4) is communicated with the sender property outlet of generator (1), and driving fluid entrance is communicated with the sender property outlet of evaporimeter (7), and jet exit is communicated with the driving fluid entrance of the first gas-gas blowout emitter (2); The working medium entrance of described restricting element (6) is communicated with the sender property outlet of condenser (3), and sender property outlet is communicated with the working medium entrance of evaporimeter (7); The working medium entrance of described circulating pump (8) is communicated with the sender property outlet of condenser (3), and sender property outlet is communicated with the working medium entrance of generator (1).
2. according to claim 1 pair of ejector refrigeration system, it is characterized in that, the Working-fluid intaking of the first gas-gas blowout emitter (2) is communicated with the sender property outlet of generator (1), the compressed fluid outlet of driving fluid entrance and the second gas-gas blowout emitter (4), jet exit is communicated with the working medium entrance of condenser (3).
3. according to claim 1 pair of ejector refrigeration system, it is characterized in that, the Working-fluid intaking of the second gas-gas blowout emitter (4) is communicated with the sender property outlet of generator (1), driving fluid entrance is communicated with the sender property outlet of evaporimeter (7), and jet exit is communicated with the driving fluid entrance of the first gas-gas blowout emitter (2).
4. according to claim 1 pair of ejector refrigeration system, it is characterized in that, the compressed fluid outlet of the working medium entrance of condenser (3) and the first gas-gas blowout emitter (2), sender property outlet is communicated with the working medium entrance of restricting element (6) with the working medium entrance of circulating pump (8), and described restricting element is choke valve or capillary.
5. according to claim 1 pair of ejector refrigeration system, is characterized in that, the working medium porch working medium of circulating pump (8) is identical with the working medium porch working medium operating mode of restricting element (6), is condenser (3) sender property outlet place fluid condition; The entrance working medium operating mode of the first gas-gas blowout emitter (2) is identical with the entrance working medium operating mode of the second gas-gas blowout emitter (4), is the sender property outlet place working medium operating mode of generator (1); The driving fluid operating mode of the first gas-gas blowout emitter (2) is identical with the compressed fluid operating mode of the second gas-gas blowout emitter (4).
6. according to claim 1 pair of ejector refrigeration system, is characterized in that, the compressed fluid pressure of the first gas-gas blowout emitter (2) is higher than the compressed fluid pressure of the second gas-gas blowout emitter (4).
7. according to claim 1 pair of ejector refrigeration system, is characterized in that, the working medium entrance of evaporimeter (7) is communicated with the sender property outlet of restricting element (6), and sender property outlet is communicated with the driving fluid entrance of the second gas-gas blowout emitter (4).
8. the two ejector refrigeration systems according to the arbitrary claim of claim 1-7, is characterized in that, the operating pressure of generator (1) is higher than the operating pressure of condenser (3), and the operating pressure of condenser (3) is higher than the operating pressure of evaporimeter (7).
9. the two ejector refrigeration systems according to the arbitrary claim of claim 1-8, is characterized in that, the driving heat source of described generator (1) comprises the thermals source such as solar energy, underground heat, waste heat of plant, used heat.
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| CN110748937A (en) * | 2019-10-25 | 2020-02-04 | 河南理工大学 | Compressor double-pressure working condition large-temperature-difference heat taking electric drive heat pump unit and working method |
| CN112815561A (en) * | 2019-10-31 | 2021-05-18 | 广东美的白色家电技术创新中心有限公司 | Refrigeration device |
| CN112815561B (en) * | 2019-10-31 | 2022-03-25 | 广东美的白色家电技术创新中心有限公司 | Refrigeration device |
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Application publication date: 20151014 |