CN102128508B - Ejector throttling air supplementing system and air supplementing method of heat pump or refrigeration system - Google Patents
Ejector throttling air supplementing system and air supplementing method of heat pump or refrigeration system Download PDFInfo
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- CN102128508B CN102128508B CN201010104818.XA CN201010104818A CN102128508B CN 102128508 B CN102128508 B CN 102128508B CN 201010104818 A CN201010104818 A CN 201010104818A CN 102128508 B CN102128508 B CN 102128508B
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Abstract
The invention relates to an ejector throttling and air supplementing system which comprises an air supplementing compressor, a condenser, a first ejector, a flash evaporator or an economizer, a second ejector, a gas-liquid separator and an evaporator, wherein a closed circulation loop is formed, the first ejector is connected in series between an outlet of the condenser and an inlet of the flash evaporator or an inlet of an auxiliary way economizer, an injection inlet of the first ejector is connected with an air outlet of the gas-liquid separator, the second ejector is connected in series between an outlet of the flash evaporator or the economizer and an inlet of the gas-liquid separator, an injection inlet of the second ejector is connected with an outlet of the evaporator, an outlet of the compressor is connected with an inlet of the condenser, and an air outlet of the. The invention adopts the ejector with simple structure, low cost, no moving parts and good adaptability to the working conditions of two-phase flow to replace a throttling device, and is beneficial to integrally improving the system performance.
Description
[technical field]
The present invention relates to refrigeration and air-conditioning technical field, refer in particular to the throttling air compensating system and heat pump or the refrigeration system supplementing method for air that are applicable to air source heat pump system and freezing equipment.
[background technology]
Existing air source heat pump heating capacity is attenuation trend along with outdoor environment temperature reduces, in order to improve heating performance, the common employing compensating compressor of hot pump in low temp system method improves cryogenic system heating capacity, mainly comprise the middle air compensating system of flash evaporation and economizer air compensating system, see Fig. 1 and Fig. 2, it comprises the closed circulation loop consisting of compressor 205, condenser 206, evaporimeter 208, choke valve F1 and choke valve F2, flash evaporation 200 or economizer 201, and compressor is moved according to accurate Two-stage Compression.Same for freezing equipment in order to reach relatively low evaporating temperature and delivery temperature, refrigeration system generally adopts cool cycles mode in the middle of two stages of compression.
But said system is throttle valve gear due to what adopt, has certain restriction loss, and along with the reduction restriction loss of environment temperature is larger, from energy conservation angle, sees and need to reclaim this part expansion work to improve refrigerating plant efficiency.First Lorentzen proposes to replace choke valve with decompressor, reclaims the expansion work of working medium pressure drop process, improve systematic energy efficiency ratio, but decompressor processing and manufacturing is difficult, and cost is higher, uneconomical for minitype air conditioner heat pump.
Therefore, provide a kind of and can improve refrigerating capacity and Energy Efficiency Ratio, energy-conservation air compensating system is real is necessary.
[summary of the invention]
The object of the present invention is to provide the air compensating system that a kind of systematic function is good, energy-conservation, and a kind of heat pump or refrigeration system supplementing method for air are provided.
For realizing the object of the invention, provide following technical scheme:
Injector throttling air compensating system of the present invention can provide following different schemes to realize goal of the invention.
1 one kinds of injector throttling air compensating systems of scheme, it comprises compressor bank, condenser, the first injector, flash evaporation, the second injector, gas-liquid separator, evaporimeter, it forms the closed circuit of sealing, between condensator outlet and flash evaporation entrance, be connected in series the first injector, its injection entrance is connected with gas-liquid separator gas outlet, between the liquid outlet of flash evaporation and gas-liquid separator entrance, be connected in series the second injector, its injection entrance is connected with evaporator outlet, compressor bank outlet is connected with condenser inlet, gas-liquid separator gas outlet is connected with compressor bank air entry, described compressor bank is provided with gas supplementing opening, gas supplementing opening is connected with flash evaporation.
What scheme 2 injector throttling air compensating systems were different from scheme 1 is, described flash evaporation is substituted by economizer, between condensator outlet and bypass economizer entrance, be connected in series the first injector, the economic entrance of main road is connected to condensator outlet, between the liquid outlet of economizer and gas-liquid separator entrance, is connected in series the second injector.
Aforementioned two kinds of injector throttling air compensating systems can also be connected to throttling arrangement, and gas-liquid separator liquid outlet is connected with throttling arrangement entrance, and outlet is connected evaporator inlet with throttling arrangement.
In described system, compressor bank can be accurate two-stage compression air compensating system, and the pipeline between low pressure compressor and high pressure compressor is provided with gas supplementing opening, and described gas supplementing opening is connected with flash evaporation or economizer gas outlet.
Compressor bank can be also two-stage compression system, and this two-stage compression system comprises high pressure compressor and the low pressure compressor being connected in series, and the exhaust outlet of described low pressure compressor is connected to the air entry of high pressure compressor.The exhaust outlet of described low pressure compressor is connected with described high pressure compressor air entry via flash evaporation or economizer, and this high pressure compressor suction inlet is the gas supplementing opening of described compressor bank.
The present invention also provides a kind of heat pump or refrigeration system supplementing method for air, it adopts above-mentioned injector throttling air compensating system, in described method, the compressed unit of the major part of gas-liquid separator top refrigerant vapour sucks, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is that low-pressure steam enters flash evaporation after the first injector throttling, mixing, diffusion or economizer becomes middle compression refrigerant steam, the middle compression refrigerant steam on flash evaporation or economizer top enters compressor bank gas supplementing opening, and the middle compression refrigerant liquid of its underpart enters the second injector as the working fluid of the second injector; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion;
Described method also further comprises throttling step, the liquid refrigerant of the bottom of gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
Described system can be two-stage compression system, comprise high pressure compressor and low pressure compressor, in described method, tonifying Qi step is that the major part of gas-liquid separator top refrigerant vapour is sucked after compressed discharge by low pressure compressor and economizer or flash evaporation refrigerant vapour out enter the suction inlet of high pressure compressor after mixing.
Described system is two-stage compression system, comprises high pressure compressor and low pressure compressor, and in described method, tonifying Qi step enters economizer or flash evaporation form saturated refrigerant vapour and sucked by high pressure compressor from low pressure compressor refrigerant vapour out.
Contrast prior art, the present invention has the following advantages:
In injector throttling tonifying Qi of the present invention system, the first injector and the second injector substitute corresponding throttling arrangement, reclaimed throttle power, the first injector injection gas-liquid separator outlet low-pressure steam, improved compressor tonifying Qi pressure, the second injector has improved gas-liquid separator outlet pressure, and comprehensively these 2 suction pressure of compressors are improved.For air supply compressor, the first injector injection part gas-liquid separator outlet steam, has increased compressor air compensation, and air intake duct flow minimizing is simultaneously conducive to reduce air intake duct pressure drop, and systematic function is further improved.The cold-producing medium mass dryness fraction that out enters evaporimeter from gas-liquid separator reduces, reduced evaporator inlet enthalpy, improved cold-producing medium specific refrigerating effect, in the situation that refrigerating capacity is certain, reduced evaporimeter inner refrigerant circular flow, reduced evaporimeter pressure drop, evaporimeter shunting uniformity also improves in addition.And therefore adopt simple in structure, cost is low, movement-less part, and the good injector of two phase flow adaptability for working condition is replaced to expansion valve, will be conducive to overall improved system performance.
Fig. 1 is the schematic diagram of existing flash evaporation air compensating system;
Fig. 2 is the schematic diagram of existing economizer air compensating system;
Fig. 3 is injector throttling flash evaporation air compensating system circular chart of the present invention;
Fig. 4 is injector throttling flash evaporation air compensating system pressure-enthalpy chart of the present invention;
Fig. 5 is injector throttling economizer air compensating system alternative elements schematic diagram of the present invention;
Fig. 6 is incomplete cooling two-stage compression system circular chart in the middle of injector throttling of the present invention;
Fig. 7 is incomplete cooling two-stage compression system pressure-enthalpy chart in the middle of injector throttling of the present invention;
Fig. 8 is complete cooling system alternative elements schematic diagram in the middle of the present invention.
[specific embodiment]
Embodiment mono-refers to Fig. 3, and system consists of compressor 105, condenser 106, the first injector 101, flash evaporation 103, the second injector 102, gas-liquid separator 107, throttling arrangement, evaporimeter 108.High temperature, the high-pressure refrigerant vapor 4 of from compressor, discharging, transfer heat to that refrigerating medium can be used for room heating or as domestic hot-water through condenser 106.From condenser 106 high pressure refrigerant liquid 5 out, as working fluid, enter the first injector 101, injection is from gas-liquid separator 107 low-temperature low-pressure refrigerant steam 1 out, through the first injector 101 throttlings, mix, after diffusion, enter flash evaporation 103, the middle compression refrigerant steam on its top enters compressor gas supplementing opening 109, the middle compression refrigerant liquid of its underpart as the second injector 102 working fluid injections from evaporimeter 108 low-temperature low-pressure refrigerant steam out, through the second injector 102 throttlings, mix, after diffusion, enter gas-liquid separator 107, gas-liquid separator 107 top refrigerant vapour 1 major parts are sucked by compressor, a part is by first injector 101 injection parts in addition, the liquid refrigerant of its underpart after throttling arrangement becomes cold-producing medium that mass dryness fraction is very little and enters evaporimeter 108 endothermic transitions to be steam by the second injector 102 injections.In compressor, the low-pressure refrigerant vapor 1 sucking from air inlet is after preliminary compression 2, be mixed into middle compression refrigerant 3 with compression refrigerant from auxilairy air intake suction, more further boil down to high-pressure refrigerant vapor 4 after discharging, compressor enters condenser 106.
Embodiment bis-refers to Fig. 5, similar with embodiment mono-, adopt economizer 104 systems to substitute flash evaporation 103 systems, from condenser 106 sub-cooled liquid refrigerant 5 parts out, through the first injector 101 throttlings 6, mix 7 with driving fluid, enter economizer 104 heat absorptions after diffusion 8 and become refrigerant vapour 9 and enter again compressor gas supplementing opening, main road cold-producing medium after the interior mistake of economizer 104 is cold 10 as the second injector 102 working fluids.
Refer to Fig. 6, embodiment tri-is on the basis of embodiment bis-, adopt two stages of compression to substitute original accurate two-stage compression system, gas-liquid separator 107 outlet refrigerant vapour 1 small parts are by the first injector 101 injections, and major part is mixed the rear 3 suction inlets compression discharges 4 that enter high pressure compressor 111 by low pressure compressor 112 suctions, compression discharge rear 2 and economizer 104 refrigerant vapour 9 out and entered condenser 106.
Refer to Fig. 8, embodiment tetra-and embodiment tri-are similar, enter the saturated refrigerant vapour of economizer 104 formation sucked by high pressure compressor 111 from low pressure compressor 112 refrigerant vapour 2 out.
The cold-producing medium mass dryness fraction that out enters evaporimeter 108 from gas-liquid separator 107 reduces, and has reduced evaporimeter 108 entrance enthalpies, has improved cold-producing medium specific refrigerating effect, as shown in Fig. 4 and Fig. 7.
The foregoing is only preferred embodiment of the present invention, protection scope of the present invention is not limited to this, within any equivalent transformation based in technical solution of the present invention all belongs to protection domain of the present invention.
Claims (24)
1. an injector throttling air compensating system, it comprises compressor, condenser, flash evaporation, gas-liquid separator and evaporimeter, it is characterized in that, described system also comprises the first injector and the second injector, it forms the closed circuit of sealing, between condensator outlet and flash evaporation entrance, be connected in series the first injector, the injection entrance of this first injector is connected with gas-liquid separator gas outlet, between the liquid outlet of flash evaporation and gas-liquid separator entrance, be connected in series the second injector, the injection entrance of this second injector is connected with evaporator outlet, compressor outlet is connected with condenser inlet, gas-liquid separator gas outlet is connected with compressor air suction mouth, described compressor is provided with gas supplementing opening, gas supplementing opening is connected with flash evaporation.
2. injector throttling air compensating system as claimed in claim 1, is characterized in that, it further comprises throttling arrangement, and gas-liquid separator liquid outlet is connected with throttling arrangement entrance, and outlet is connected evaporator inlet with throttling arrangement.
3. injector throttling air compensating system as claimed in claim 2, is characterized in that, the described system two-stage compression air compensating system that is as the criterion.
4. an injector throttling air compensating system, it comprises compressor, condenser, economizer, gas-liquid separator and evaporimeter, it is characterized in that, described system also comprises the first injector and the second injector, it forms the closed circuit of sealing, between condensator outlet and economizer entrance, be connected in series the first injector, the injection entrance of this first injector is connected with gas-liquid separator gas outlet, between the liquid outlet of economizer and gas-liquid separator entrance, be connected in series the second injector, the injection entrance of this second injector is connected with evaporator outlet, compressor outlet is connected with condenser inlet, gas-liquid separator gas outlet is connected with compressor air suction mouth, described compressor is provided with gas supplementing opening, gas supplementing opening is connected with economizer.
5. injector throttling air compensating system as claimed in claim 4, is characterized in that, it further comprises throttling arrangement, and gas-liquid separator liquid outlet is connected with throttling arrangement entrance, and outlet is connected evaporator inlet with throttling arrangement.
6. injector throttling air compensating system as claimed in claim 5, is characterized in that, the described system two-stage compression air compensating system that is as the criterion.
7. an injector throttling air compensating system, it comprises high pressure compressor, low pressure compressor, condenser, flash evaporation, gas-liquid separator and evaporimeter, it is characterized in that, described system also comprises the first injector and the second injector, it forms the closed circuit of sealing, between condensator outlet and flash evaporation entrance, be connected in series the first injector, the injection entrance of this first injector is connected with gas-liquid separator gas outlet, between the liquid outlet of flash evaporation and gas-liquid separator entrance, be connected in series the second injector, the injection entrance of this second injector is connected with evaporator outlet, high pressure compressor and low pressure compressor are connected in series, high pressure compressor outlet is connected with condenser inlet, gas-liquid separator gas outlet is connected with low pressure compressor air entry, the exhaust outlet of described low pressure compressor is connected to the air entry of high pressure compressor, the air entry of described high pressure compressor is connected with described flash evaporation.
8. injector throttling air compensating system as claimed in claim 7, is characterized in that, described low pressure compressor is connected with the gas outlet of described flash evaporation with the pipeline between described high pressure compressor.
9. injector throttling air compensating system as claimed in claim 7, is characterized in that, the exhaust outlet of described low pressure compressor is connected with the air entry of described high pressure compressor via flash evaporation.
10. an injector throttling air compensating system, it comprises high pressure compressor, low pressure compressor, condenser, economizer, gas-liquid separator and evaporimeter, it is characterized in that, described system also comprises the first injector and the second injector, it forms the closed circuit of sealing, between condensator outlet and economizer entrance, be connected in series the first injector, the injection entrance of this first injector is connected with gas-liquid separator gas outlet, between the liquid outlet of economizer and gas-liquid separator entrance, be connected in series the second injector, the injection entrance of this second injector is connected with evaporator outlet, high pressure compressor and low pressure compressor are connected in series, high pressure compressor outlet is connected with condenser inlet, gas-liquid separator gas outlet is connected with low pressure compressor air entry, the exhaust outlet of described low pressure compressor is connected to the air entry of high pressure compressor, the air entry of described high pressure compressor is connected with described economizer.
11. injector throttling air compensating systems as claimed in claim 10, is characterized in that, described low pressure compressor is connected with the gas outlet of described economizer with the pipeline between described high pressure compressor.
12. injector throttling air compensating systems as claimed in claim 10, is characterized in that, the exhaust outlet of described low pressure compressor is connected with the air entry of described high pressure compressor via economizer.
13. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that it adopts injector throttling air compensating system as claimed in claim 1, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is that low-pressure steam enters flash evaporation and becomes middle compression refrigerant steam after the first injector throttling, mixing, diffusion, the middle compression refrigerant steam on flash evaporation top enters compressor gas supplementing opening, and the middle compression refrigerant liquid of its underpart enters the second injector as the working fluid of the second injector; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
14. a kind of heat pump as claimed in claim 13 or refrigeration system supplementing method for air, it is characterized in that described method also further comprises throttling step, the liquid refrigerant of the bottom of gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
15. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that it adopts injector throttling air compensating system as claimed in claim 4, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is that low-pressure steam enters economizer and becomes middle compression refrigerant steam after the first injector throttling, mixing, diffusion, the middle compression refrigerant steam on economizer top enters compressor gas supplementing opening, and the middle compression refrigerant liquid of its underpart enters the second injector as the working fluid of the second injector; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
16. a kind of heat pump as claimed in claim 15 or refrigeration system supplementing method for air, it is characterized in that described method also further comprises throttling step, the liquid refrigerant of the bottom of gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
17. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 7, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is after the major part of gas-liquid separator top refrigerant vapour is sucked compressed discharge by low pressure compressor and after flash evaporation refrigerant vapour mixing out, enters the suction inlet of high pressure compressor; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
18. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 10, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is after the major part of gas-liquid separator top refrigerant vapour is sucked compressed discharge by low pressure compressor and after economizer refrigerant vapour mixing out, enters the suction inlet of high pressure compressor; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
19. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 7, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi, the second injection step and throttling step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is after the major part of gas-liquid separator top refrigerant vapour is sucked compressed discharge by low pressure compressor and after flash evaporation refrigerant vapour mixing out, enters the suction inlet of high pressure compressor; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion; The liquid refrigerant of the bottom that described throttling step is gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
20. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 10, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi, the second injection step and throttling step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is after the major part of gas-liquid separator top refrigerant vapour is sucked compressed discharge by low pressure compressor and after economizer refrigerant vapour mixing out, enters the suction inlet of high pressure compressor; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion; The liquid refrigerant of the bottom that described throttling step is gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
21. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 7, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is sucked by high pressure compressor for entering flash evaporation forms saturated refrigerant vapour from low pressure compressor refrigerant vapour out; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
22. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 10, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi and the second injection step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is sucked by high pressure compressor for entering economizer forms saturated refrigerant vapour from low pressure compressor refrigerant vapour out; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion.
23. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 7, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi, the second injection step and throttling step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is sucked by high pressure compressor for entering flash evaporation forms saturated refrigerant vapour from low pressure compressor refrigerant vapour out; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion; The liquid refrigerant of the bottom that described throttling step is gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
24. 1 kinds of heat pumps or refrigeration system supplementing method for air, it is characterized in that adopting injector throttling air compensating system as claimed in claim 10, in described method, the major part of gas-liquid separator top refrigerant vapour is sucked by low pressure compressor, at refrigerant circulation loop, set up successively the first injection, tonifying Qi, the second injection step and throttling step, the first described injection step is by the small part low-pressure steam of the first injector injection gas-liquid separator outlet; Described tonifying Qi step is sucked by high pressure compressor for entering economizer forms saturated refrigerant vapour from low pressure compressor refrigerant vapour out; The second described injection step from evaporimeter low-temperature low-pressure refrigerant steam out, enters gas-liquid separator by the second injector injection after the second injector throttling, mixing, diffusion; The liquid refrigerant of the bottom that described throttling step is gas-liquid separator through throttling arrangement enter after evaporimeter carries out heat exchange, change low-temperature low-pressure refrigerant steam into after by the second injector injection.
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| CN201010104818.XA CN102128508B (en) | 2010-01-19 | 2010-01-19 | Ejector throttling air supplementing system and air supplementing method of heat pump or refrigeration system |
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| CN201010104818.XA CN102128508B (en) | 2010-01-19 | 2010-01-19 | Ejector throttling air supplementing system and air supplementing method of heat pump or refrigeration system |
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