CN201666686U - Throttling air supply system with ejectors - Google Patents

Throttling air supply system with ejectors Download PDF

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Publication number
CN201666686U
CN201666686U CN201020107168XU CN201020107168U CN201666686U CN 201666686 U CN201666686 U CN 201666686U CN 201020107168X U CN201020107168X U CN 201020107168XU CN 201020107168 U CN201020107168 U CN 201020107168U CN 201666686 U CN201666686 U CN 201666686U
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CN
China
Prior art keywords
gas
outlet
injector
inlet
compressor
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Expired - Lifetime
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CN201020107168XU
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Chinese (zh)
Inventor
梁祥飞
吴迎文
郑波
林华和
涂小苹
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201020107168XU priority Critical patent/CN201666686U/en
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Abstract

The utility model relates to a throttling air supply system with ejectors. The throttling air supply system comprises an air supply compressor, a condenser, a first ejector, a flash vaporization device or an economizer, a second ejector, a gas-liquid separator and an evaporator that form a closed circulation loop; the first ejector is connected between the outlet of the condenser and the inlet of the flash vaporization device or the inlet of the economizer of an auxiliary loop in series, and the ejecting inlet of the first ejector is connected with the gas outlet of the gas-liquid separator; a second ejector is connected between the liquid outlet of the flash vaporization device or the economizer and the inlet of the gas-liquid separator in series, and the ejecting inlet of the second ejector is connected with the outlet of the evaporator; the outlet of the compressor is connected with the inlet of the condenser; and the gas outlet of the gas-liquid separator is connected with the gas suction port of the compressor. The throttling air supply system adopts the parts with simple structures, low cost and no movement, and the ejectors with good adaptability to the working condition of two-phase flow replaces a throttling device, thereby being beneficial for overall improving the performance of the system.

Description

Injector throttling air compensating system
[technical field]
The utility model relates to the refrigeration and air-conditioning technical field, refers in particular to the throttling air compensating system that is 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 air supply compressor method improves the cryogenic system heating capacity in the middle of the common employing of hot pump in low temp system, mainly comprise middle air compensating system of flash evaporation and economizer air compensating system, see Fig. 1 and Fig. 2, it comprises the closed circulation loop that is made of compressor 205, condenser 206, evaporimeter 208, choke valve F1 and choke valve F2, flash evaporation 200 or economizer 201, makes compressor according to accurate twin-stage compression operation.Equally 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 the two stages of compression.
But there is certain restriction loss in said system because what adopt is throttle valve gear, and along with the reduction restriction loss of environment temperature is big more, and seeing from the energy conservation angle needs to reclaim this part expansion work to improve refrigerating plant efficient.Lorentzen at first proposes to replace choke valve with decompressor, reclaims the expansion work of working medium pressure drop process, improves systematic energy efficiency ratio, but decompressor processing and manufacturing difficulty, cost is higher, and it is uneconomical to be used for the 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 to be necessary.
[utility model content]
The air compensating system that provides a kind of systematic function good, energy-conservation is provided the purpose of this utility model.
For realizing the utility model purpose, provide following technical scheme:
The utility model injector throttling air compensating system can provide following different schemes to realize the utility model purpose.
1 one kinds of injector throttlings of scheme air compensating system, it comprises compressor, condenser, first injector, flash evaporation, second injector, gas-liquid separator, evaporimeter, it constitutes the closed circuit of sealing, serial connection first injector between condensator outlet and flash evaporation inlet, its injection inlet is connected with the gas-liquid separator gas outlet, serial connection second injector between the liquid outlet of flash evaporation and gas-liquid separator inlet, its injection inlet is connected with evaporator outlet, compressor outlet is connected with condenser inlet, the gas-liquid separator gas outlet is connected with the compressor air suction mouth, described compressor is provided with gas supplementing opening, and gas supplementing opening is connected with flash evaporation.
What scheme 2 injector throttling air compensating systems were different with scheme is, described flash evaporation is substituted by economizer, serial connection first injector between condensator outlet and bypass economizer inlet, main road economy inlet is connected to condensator outlet, serial connection second injector between the liquid outlet of economizer and gas-liquid separator inlet.
Aforementioned two kinds of injector throttling air compensating systems can also be connected to throttling arrangement, and the gas-liquid separator liquid outlet is connected with the throttling arrangement inlet, and outlet is connected evaporator inlet with throttling arrangement.
Described system can be accurate secondary 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.
Also can be two-stage compression system, this two-stage compression system comprises high pressure compressor and the low pressure compressor that is 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 described gas supplementing opening is the high pressure compressor suction inlet.
Adopt the heat pump or the refrigeration system supplementing method for air of above-mentioned injector throttling air compensating system as follows: the major part of gas-liquid separator top refrigerant vapour is sucked by compressor, set up first injection, tonifying Qi and the second injection step successively at refrigerant circulation loop, the described first injection step is by the small part low-pressure steam of first injector injection gas-liquid separator outlet; Described tonifying Qi step be low-pressure steam behind the first injector throttling, mixing, diffusion, enter flash evaporation or economizer become in the compacting refrigerant vapor, the middle compacting refrigerant vapor on flash evaporation or economizer top enters the compressor gas supplementing opening, and the middle compacting cryogen liquid of its underpart enters second injector as the working fluid of second injector; The described second injection step from the low-temperature low-pressure refrigerant steam that evaporimeter comes out, enters gas-liquid separator by the second injector injection behind injector throttling, mixing, diffusion.
Described method also further comprises the throttling step, the liquid refrigerant of the bottom of gas-liquid separator through throttling arrangement enter change the low-temperature low-pressure refrigerant steam into after evaporimeter carries out heat exchange after by the second injector injection.
Described system can be a two-stage compression system, comprise high pressure compressor and low pressure compressor, the tonifying Qi step is that the major part of gas-liquid separator top refrigerant vapour is sucked the compressed suction inlet that enters high pressure compressor after the refrigerant vapour mixing of coming out in back and economizer or flash evaporation of discharging by low pressure compressor in the described method.
Described system is a two-stage compression system, comprises high pressure compressor and low pressure compressor, and the refrigerant vapour that the tonifying Qi step is come out from low pressure compressor in the described method enters and sucked by high pressure compressor after economizer or flash evaporation form saturated refrigerant vapour.
The contrast prior art the utlity model has following advantage:
First injector and second injector substitute corresponding throttling arrangement in the utility model injector throttling tonifying Qi system, reclaimed the throttling merit, first injector injection gas-liquid separator outlet low-pressure steam, improved compressor tonifying Qi pressure, second injector has improved the gas-liquid separator outlet pressure, and comprehensively these 2 compressor air suction pressure are improved.For air supply compressor, first injector injection part gas-liquid separator outlet steam has increased the compressor air compensation, and air intake duct flow minimizing simultaneously helps reducing the air intake duct pressure drop, makes systematic function further improve.The cold-producing medium mass dryness fraction of coming out to enter evaporimeter from gas-liquid separator reduces, reduced the evaporator inlet enthalpy, improved the cold-producing medium specific refrigerating effect, under the certain situation of refrigerating capacity, reduced evaporimeter inner refrigerant circular flow, reduced the evaporimeter pressure drop, evaporimeter shunting uniformity also improves in addition.Therefore adopt again simple in structure, cost is low, movement-less part, the injector good to the two phase flow adaptability for working condition replaces expansion valve, will help the overall improved system performance.
[description of drawings]
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 the utility model injector throttling flash evaporation air compensating system circular chart;
Fig. 4 is the utility model injector throttling flash evaporation air compensating system pressure-enthalpy chart;
Fig. 5 is the utility model injector throttling economizer air compensating system alternative elements schematic diagram;
Fig. 6 not exclusively cools off the two-stage compression system circular chart in the middle of the throttling of the utility model injector;
Fig. 7 not exclusively cools off the two-stage compression system pressure-enthalpy chart in the middle of the throttling of the utility model injector;
Fig. 8 is a complete cooling system alternative elements schematic diagram in the middle of the utility model.
[specific embodiment]
Embodiment one sees also Fig. 3, and system is made of compressor 105, condenser 106, first injector 101, flash evaporation 103, second injector 102, gas-liquid separator 107, throttling arrangement, evaporimeter 108.High temperature, the high-pressure refrigerant vapor 4 of discharging from compressor can be used for room heating with the heat transferred refrigerating medium or as the domestic hot-water through condenser 106.The high pressure refrigerant liquid 5 of coming out from condenser 106 enters first injector 101 as working fluid, the low-temperature low-pressure refrigerant steam 1 that injection comes out from gas-liquid separator 107, through 101 throttlings 6 of first injector, mix 7, enter flash evaporation 103 behind the diffusion 8, the middle compacting refrigerant vapor 9 on its top enters compressor gas supplementing opening 109, the low-temperature low-pressure refrigerant steam 16 that the middle compacting cryogen liquid 10 of its underpart comes out from evaporimeter 108 as second injector, 102 working fluid injections, through 102 throttlings 11 of second injector, mix 12, enter gas-liquid separator 107 behind the diffusion 13, gas-liquid separator 107 top refrigerant vapours 1 major part is sucked by compressor, a part is by first injector, 101 injection parts in addition, the liquid refrigerant 14 of its underpart after throttling arrangement becomes the very little cold-producing medium of mass dryness fraction 15 and enters evaporimeter 108 endothermic transitions to be steam 16 by second injector, 102 injections.In compressor, after the preliminary compression 2 of low-pressure refrigerant vapor 1 process of air inlet suction, suppress cryogen 3 with compacting cryogen 9 from the auxilairy air intake suction in being mixed into, enter condenser 106 after further boil down to high-pressure refrigerant vapor 4 compressed machines are discharged again.
Embodiment two sees also Fig. 5, similar with embodiment one, adopt economizer 104 systems to substitute flash evaporation 103 systems, sub-cooled liquid refrigerant 5 parts of coming out from condenser 106 are mixed 7, are entered economizer 104 heat absorptions behind the diffusion 8 and become refrigerant vapour 9 and enter the compressor gas supplementing opening again through 101 throttlings 6 of first injector with driving fluid, the main road cold-producing medium crosses cold back 10 as second injector, 102 working fluids economizer 104 in.
See also Fig. 6, embodiment three is on the basis of embodiment two, adopt two stages of compression to substitute original accurate secondary compressibility, gas-liquid separator 107 outlet refrigerant vapours 1 small part is by first injector, 101 injections, and the 3 suction inlet compression discharges 4 that enter high pressure compressor 111 entered condenser 106 after the refrigerant vapour 9 that major part is come out by low pressure compressor 112 suctions, compression discharge back 2 and economizer 104 mixed.
See also Fig. 8, embodiment four and embodiment three are similar, and the refrigerant vapour 2 that comes out from low pressure compressor 112 enters economizer 104 and forms saturated refrigerant vapour and sucked by high pressure compressor 111.
The cold-producing medium mass dryness fraction of coming out to enter evaporimeter 108 from gas-liquid separator 107 reduces, and has reduced evaporimeter 108 inlet enthalpies, has improved the cold-producing medium specific refrigerating effect, as Fig. 4 and shown in Figure 7.
The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited thereto, and anyly all belongs within the utility model protection domain based on the equivalent transformation on the technical solutions of the utility model.

Claims (7)

1. injector throttling air compensating system, it comprises compressor, condenser, flash evaporation, gas-liquid separator, evaporimeter, it is characterized in that, described system also comprises first injector, second injector, it constitutes the closed circuit of sealing, serial connection first injector between condensator outlet and flash evaporation inlet, its injection inlet is connected with the gas-liquid separator gas outlet, serial connection second injector between the liquid outlet of flash evaporation and gas-liquid separator inlet, its injection inlet is connected with evaporator outlet, compressor outlet is connected with condenser inlet, the gas-liquid separator gas outlet is connected with the compressor air suction mouth, described compressor is provided with gas supplementing opening, and gas supplementing opening is connected with flash evaporation.
2. injector throttling air compensating system as claimed in claim 1, it is characterized in that, described flash evaporation is substituted by economizer, serial connection first injector between condensator outlet and bypass economizer inlet, main road economy inlet is connected to condensator outlet, serial connection second injector between the liquid outlet of economizer and gas-liquid separator inlet.
3. injector throttling air compensating system as claimed in claim 1 or 2 is characterized in that it further comprises throttling arrangement, and the gas-liquid separator liquid outlet is connected with the throttling arrangement inlet, and outlet is connected evaporator inlet with throttling arrangement.
4. injector throttling air compensating system as claimed in claim 3 is characterized in that, the described system secondary compression air compensating system that is as the criterion.
5. injector throttling air compensating system as claimed in claim 1 or 2, it is characterized in that, described system is a two-stage compression system, comprises the high pressure compressor and the low pressure compressor that are connected in series, and the exhaust outlet of described low pressure compressor is connected to the air entry of high pressure compressor.
6. injector throttling air compensating system as claimed in claim 5 is characterized in that 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.
7. injector throttling air compensating system as claimed in claim 5 is characterized in that, the exhaust outlet of described low pressure compressor is connected with described high pressure compressor air entry via flash evaporation or economizer, and described gas supplementing opening is the high pressure compressor suction inlet.
CN201020107168XU 2010-01-19 2010-01-19 Throttling air supply system with ejectors Expired - Lifetime CN201666686U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230682A (en) * 2011-06-14 2011-11-02 合肥天鹅制冷科技有限公司 Refrigerating system of three-stage flash-evaporation ejection economizers
CN102230681A (en) * 2011-06-14 2011-11-02 合肥天鹅制冷科技有限公司 Zero-superheat-degree running refrigerating system at evaporator outlet
CN102588291A (en) * 2011-01-11 2012-07-18 珠海格力电器股份有限公司 Spray liquid cooling device and compressor provided with same
CN103968477A (en) * 2013-02-01 2014-08-06 珠海格力电器股份有限公司 Air conditioner
CN102128508B (en) * 2010-01-19 2014-10-29 珠海格力电器股份有限公司 Ejector throttling and vapor supplementing system and heat pump or refrigerating system vapor supplementing method
CN105444450A (en) * 2014-07-04 2016-03-30 约克广州空调冷冻设备有限公司 Refrigeration device
CN106196678A (en) * 2016-07-10 2016-12-07 北京工业大学 The pump of a kind of band ejector drives double evaporators base station heat radiator
CN109297210A (en) * 2018-08-28 2019-02-01 珠海格力电器股份有限公司 A kind of air-conditioning system and control method with injector
CN109405330A (en) * 2018-09-17 2019-03-01 珠海格力电器股份有限公司 A kind of compressor and heat pump system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102128508B (en) * 2010-01-19 2014-10-29 珠海格力电器股份有限公司 Ejector throttling and vapor supplementing system and heat pump or refrigerating system vapor supplementing method
CN102588291A (en) * 2011-01-11 2012-07-18 珠海格力电器股份有限公司 Spray liquid cooling device and compressor provided with same
CN102230682A (en) * 2011-06-14 2011-11-02 合肥天鹅制冷科技有限公司 Refrigerating system of three-stage flash-evaporation ejection economizers
CN102230681A (en) * 2011-06-14 2011-11-02 合肥天鹅制冷科技有限公司 Zero-superheat-degree running refrigerating system at evaporator outlet
CN103968477A (en) * 2013-02-01 2014-08-06 珠海格力电器股份有限公司 Air conditioner
CN103968477B (en) * 2013-02-01 2017-04-12 珠海格力电器股份有限公司 Air conditioner
CN105444450A (en) * 2014-07-04 2016-03-30 约克广州空调冷冻设备有限公司 Refrigeration device
CN106196678A (en) * 2016-07-10 2016-12-07 北京工业大学 The pump of a kind of band ejector drives double evaporators base station heat radiator
CN106196678B (en) * 2016-07-10 2018-10-12 北京工业大学 A kind of pump driving double evaporators base station heat radiator with injector
CN109297210A (en) * 2018-08-28 2019-02-01 珠海格力电器股份有限公司 A kind of air-conditioning system and control method with injector
CN109405330A (en) * 2018-09-17 2019-03-01 珠海格力电器股份有限公司 A kind of compressor and heat pump system

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AV01 Patent right actively abandoned

Granted publication date: 20101208

Effective date of abandoning: 20100119

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