CN107990585A - A kind of improved air injection enthalpy-increasing air-conditioning system - Google Patents
A kind of improved air injection enthalpy-increasing air-conditioning system Download PDFInfo
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- CN107990585A CN107990585A CN201711429577.4A CN201711429577A CN107990585A CN 107990585 A CN107990585 A CN 107990585A CN 201711429577 A CN201711429577 A CN 201711429577A CN 107990585 A CN107990585 A CN 107990585A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 11
- 238000002347 injection Methods 0.000 title claims abstract description 10
- 239000007924 injection Substances 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims 2
- 230000008676 import Effects 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000005057 refrigeration Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B31/00—Compressor 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/40—Fluid line 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
本发明涉及一种改进的喷气增焓空调系统，包括由压缩机、四通阀、室外侧换热器、室内侧换热器和气液分离器依序连接而成的冷媒循环回路；所述室外侧换热器和室内侧换热器之间的管路上设有单向阀组件和经济器；所述单向阀组件包括四个单向阀和四个端口，第一端口与室内侧换热器相连，第二端口与经济器液路进口相连，第三端口与所述室外侧换热器相连，第四端口与经济器液路出口相连；所述经济器的液路出口的外管路一分为二，一路经主电子膨胀阀后与第四端口相连，另一路经辅助电子膨胀阀后与经济器气路进口相连；所述经济器的气路出口与压缩机补气口相连。本发明使机组在制冷、制热时都能使用喷气增焓，提高了机组的能力和能效。
The invention relates to an improved air-injection enthalpy-increasing air-conditioning system, which includes a refrigerant circulation circuit sequentially connected by a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, and a gas-liquid separator; the chamber A check valve assembly and an economizer are arranged on the pipeline between the outside heat exchanger and the indoor heat exchanger; the check valve assembly includes four check valves and four ports, and the first port is connected to the indoor heat exchanger. The second port is connected with the liquid inlet of the economizer, the third port is connected with the outdoor heat exchanger, and the fourth port is connected with the liquid outlet of the economizer; the outer pipeline of the liquid outlet of the economizer is one Divided into two, one path is connected to the fourth port after passing through the main electronic expansion valve, and the other path is connected to the gas path inlet of the economizer after passing through the auxiliary electronic expansion valve; the gas path outlet of the economizer is connected to the gas supply port of the compressor. The invention enables the unit to use air injection to increase enthalpy during refrigeration and heating, thereby improving the capacity and energy efficiency of the unit.
Description
技术领域technical field
本发明涉及一种空调系统，尤其是一种能够在恶劣工况下能稳定且安全运行的空调系统，具体的说是一种改进的喷气增焓空调系统。The invention relates to an air-conditioning system, in particular to an air-conditioning system capable of stable and safe operation under harsh working conditions, in particular to an improved air-jet enthalpy-increasing air-conditioning system.
背景技术Background technique
空调在低温制热时，室外环境温度很低，室外机热交换能力下降，压缩机回气量减小，导致空调制热能力能效衰减十分严重；空调在高温制冷时，室外环境温度很高，室外机散热效果较差，机组运行时高压较高，制冷效果较差。喷气增焓技术有助于提高机组的能力和能效，并且能有效改善高压缩比工况下排气温度过高的情况，拓展机组运行范围。但是，目前使用排气增焓技术的空调系统大都结构复杂，不利于系统的稳定运行，以及成本的降低。When the air conditioner is heating at low temperature, the outdoor ambient temperature is very low, the heat exchange capacity of the outdoor unit decreases, and the return air volume of the compressor decreases, resulting in a serious decline in the energy efficiency of the air conditioner’s heating capacity; when the air conditioner is cooling at high temperature, the outdoor ambient temperature is high, and the outdoor The heat dissipation effect of the unit is poor, the high pressure is high when the unit is running, and the cooling effect is poor. The gas injection enthalpy increase technology helps to improve the capacity and energy efficiency of the unit, and can effectively improve the excessive exhaust temperature under high compression ratio conditions and expand the operating range of the unit. However, most of the air-conditioning systems currently using exhaust enthalpy increasing technology have complex structures, which is not conducive to the stable operation of the system and the reduction of cost.
发明内容Contents of the invention
本发明的目的是针对现有技术的不足，提供一种改进的喷气增焓空调系统，不仅可使机组在制冷、制热时都能使用喷气增焓，提升机组低温制热及高温制冷时的能力能效，保证机组安全、稳定运行，而且，结构更加简单，有利于降低成本。The purpose of the present invention is to address the deficiencies of the prior art and provide an improved air-jet enthalpy-increasing air-conditioning system, which not only enables the unit to use air-injection enthalpy during cooling and heating, but also improves the efficiency of the unit during low-temperature heating and high-temperature cooling. The capacity and energy efficiency ensure the safe and stable operation of the unit, and the structure is simpler, which is conducive to reducing costs.
本发明的技术方案是：Technical scheme of the present invention is:
一种改进的喷气增焓空调系统，包括由压缩机、四通阀、室外侧换热器、室内侧换热器和气液分离器依序连接而成的冷媒循环回路；所述压缩机为补气增焓压缩机；所述室外侧换热器和室内侧换热器之间的管路上设有单向阀组件和经济器；所述单向阀组件包括四个单向阀，其中，第一单向阀和第二单向阀同向串接，并在连接处形成第一端口；第三单向阀和第四单向阀同向串接，并在连接处形成第三端口；第一单向阀入口端与所述第三单向阀的入口端连接，并形成第四端口，第二单向阀的出口端与第四单向阀的出口端相连，并形成第二端口；所述第一端口与室内侧换热器相连，第二端口与经济器液路进口相连，第三端口与所述室外侧换热器相连，第四端口与经济器液路出口相连；所述经济器的液路出口的外管路一分为二，一路经主电子膨胀阀后与第四端口相连，另一路经辅助电子膨胀阀后与经济器气路进口相连；所述经济器的气路出口与压缩机补气口相连。An improved air-injection enthalpy-increasing air-conditioning system, including a refrigerant circulation circuit sequentially connected by a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, and a gas-liquid separator; Gas enthalpy-enhancing compressor; a check valve assembly and an economizer are arranged on the pipeline between the outdoor heat exchanger and the indoor heat exchanger; the check valve assembly includes four check valves, wherein the first The one-way valve and the second one-way valve are connected in series in the same direction and form a first port at the connection; the third one-way valve and the fourth one-way valve are connected in series in the same direction and form a third port at the connection; The inlet end of the one-way valve is connected to the inlet end of the third one-way valve to form a fourth port, and the outlet end of the second one-way valve is connected to the outlet end of the fourth one-way valve to form a second port; The first port is connected to the indoor heat exchanger, the second port is connected to the liquid inlet of the economizer, the third port is connected to the outdoor heat exchanger, and the fourth port is connected to the liquid outlet of the economizer; The outer pipeline of the outlet of the liquid circuit of the device is divided into two, one is connected to the fourth port after passing through the main electronic expansion valve, and the other is connected to the inlet of the gas circuit of the economizer after passing through the auxiliary electronic expansion valve; the gas circuit of the economizer The outlet is connected with the air supply port of the compressor.
较佳的，所述经济器为板式换热器。Preferably, the economizer is a plate heat exchanger.
本发明的有益效果：Beneficial effects of the present invention:
本发明利用单向阀组件实现制冷、制热流路切换，使机组在制冷、制热时都能使用喷气增焓，极大提高了机组在低温制热及高温制冷时的能力和能效，保证了机组在恶劣工况下能够稳定、安全的运行。同时，结构简单，操作方便，有利降低成本。The invention utilizes the one-way valve assembly to switch between cooling and heating flow paths, so that the unit can use air injection to increase enthalpy during cooling and heating, greatly improving the capacity and energy efficiency of the unit during low-temperature heating and high-temperature cooling, and ensuring The unit can operate stably and safely under harsh working conditions. At the same time, the structure is simple, the operation is convenient, and the cost is reduced.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
图2是本发明制热模式下的冷媒流向示意图。Fig. 2 is a schematic diagram of refrigerant flow in the heating mode of the present invention.
图3是本发明制冷模式下的冷媒流向示意图。Fig. 3 is a schematic diagram of refrigerant flow in the cooling mode of the present invention.
其中：1-压缩机；11-排气口；12-吸气口；13-补气口；2-四通阀；21-D端；22-C端；23-S端；24-E端； 3-室内侧换热器；4-单向阀组件；41—第一端口；42-第二端口；43-第三端口；44-第四端口；401-第一单向阀；402-第二单向阀；403-第三单向阀；404-第四单向阀；5-经济器；51-液路进口；52-液路出口；53-气路进口；54-气路出口；6-主电子膨胀阀；7-室外侧换热器；8-气液分离器；9-辅助电子膨胀阀；箭头表示冷媒的流向。Among them: 1-compressor; 11-exhaust port; 12-suction port; 13-air supply port; 2-four-way valve; 21-D end; 22-C end; 23-S end; 24-E end; 3-indoor heat exchanger; 4-one-way valve assembly; 41-first port; 42-second port; 43-third port; 44-fourth port; 401-first one-way valve; 402-the first Two one-way valves; 403-third one-way valves; 404-fourth one-way valves; 5-economizer; 51-liquid way inlet; 52-liquid way outlet; 6-main electronic expansion valve; 7-outdoor heat exchanger; 8-gas-liquid separator; 9-auxiliary electronic expansion valve; arrows indicate the flow direction of refrigerant.
具体实施方式Detailed ways
下面结合附图和实施例对本发明作进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
如图1所示，一种改进的喷气增焓空调系统，包括由压缩机1、四通阀2、室外侧换热器7、室内侧换热器3和气液分离器8依序连接而成的冷媒循环回路；所述压缩机1为补气增焓压缩机，包括吸气口12、排气口11和补气口13，可进行二级压缩，增大主循环回路的焓差，提升机组能力能效。所述四通阀2的D端21连接压缩机的排气口11，C端22连接室内侧换热器3，E端24连接室外侧换热器7，S端23连接气液分离器8。所述室外侧换热器7和室内侧换热器3之间的管路上设有单向阀组件4和经济器5；所述单向阀组件4包括四个单向阀，其中第一单向阀401和第二单向阀402同向串接，并在连接处形成第一端口41；第三单向阀403和第四单向阀404同向串接，并在连接处形成第三端口43；第一单向阀401入口端与所述第三单向阀403的入口端连接，并形成第四端口44，第二单向阀402的出口端与第四单向阀404的出口端相连，并形成第二端口42；所述第一端口41与室内侧换热器3相连，第二端口42与经济器5液路进口51相连，第三端口43与所述室外侧换热器7相连，第四端口44与经济器5液路出口52相连；所述经济器5的液路出口52的外管路一分为二，一路经主电子膨胀阀6后与第四端口44相连，另一路经辅助电子膨胀阀9后与经济器5气路进口53相连；所述经济器5的气路出口54与压缩机1补气口13相连。As shown in Figure 1, an improved air-injection enthalpy-increasing air-conditioning system consists of a compressor 1, a four-way valve 2, an outdoor heat exchanger 7, an indoor heat exchanger 3 and a gas-liquid separator 8 connected in sequence Refrigerant circulation loop; the compressor 1 is an air-increasing enthalpy compressor, including a suction port 12, an exhaust port 11, and an air-increasing port 13, which can perform two-stage compression, increase the enthalpy difference of the main circulation circuit, and improve the unit Capacity energy efficiency. The D end 21 of the four-way valve 2 is connected to the exhaust port 11 of the compressor, the C end 22 is connected to the indoor heat exchanger 3, the E end 24 is connected to the outdoor heat exchanger 7, and the S end 23 is connected to the gas-liquid separator 8 . The pipeline between the outdoor heat exchanger 7 and the indoor heat exchanger 3 is provided with a check valve assembly 4 and an economizer 5; the check valve assembly 4 includes four check valves, wherein the first check valve The valve 401 and the second one-way valve 402 are connected in series in the same direction and form the first port 41 at the connection; the third one-way valve 403 and the fourth one-way valve 404 are connected in series in the same direction and form the third port at the connection 43; the inlet port of the first one-way valve 401 is connected to the inlet port of the third one-way valve 403 to form a fourth port 44, the outlet port of the second one-way valve 402 is connected to the outlet port of the fourth one-way valve 404 connected to form a second port 42; the first port 41 is connected to the indoor heat exchanger 3, the second port 42 is connected to the liquid inlet 51 of the economizer 5, and the third port 43 is connected to the outdoor heat exchanger 7 connected, the fourth port 44 is connected with the liquid outlet 52 of the economizer 5; the outer pipeline of the liquid outlet 52 of the economizer 5 is divided into two, and one path is connected with the fourth port 44 after passing through the main electronic expansion valve 6 , and the other path is connected to the gas path inlet 53 of the economizer 5 after passing through the auxiliary electronic expansion valve 9; the gas path outlet 54 of the economizer 5 is connected to the gas supply port 13 of the compressor 1.
制热模式时，如图2所示，压缩机1、四通阀2、室内侧换热器3、单向阀组件4、经济器5、辅助电子膨胀阀9形成补气回路，经室内侧换热器3冷凝的冷媒从单向阀组件4第一端口41流入，从单向阀组件4第二端口42流出进入经济器5。冷媒的流向为：压缩机排气口---四通阀C端---室内侧换热器---第一端口---第二端口---经济器---主电子膨胀阀---第四端口---第三端口---室外侧换热器---四通阀E端---气液分离器---压缩机吸气口。In the heating mode, as shown in Figure 2, the compressor 1, the four-way valve 2, the indoor heat exchanger 3, the one-way valve assembly 4, the economizer 5, and the auxiliary electronic expansion valve 9 form a supplementary air circuit. The refrigerant condensed by the heat exchanger 3 flows in from the first port 41 of the one-way valve assembly 4 , flows out from the second port 42 of the one-way valve assembly 4 and enters the economizer 5 . The flow direction of the refrigerant is: compressor exhaust port --- four-way valve C end --- indoor heat exchanger --- first port --- second port --- economizer --- main electronic expansion valve ---Fourth port ---Third port ---Outdoor heat exchanger ---E end of four-way valve ---Gas-liquid separator ---Compressor suction port.
制冷模式时，如图3所示，所述压缩机1、四通阀2、室外侧换热器7、单向阀组件4、经济器5、辅助电子膨胀阀9形成补气回路，经室外侧换热器7冷凝的冷媒从单向阀组件4第3端口43流入，从单向阀组件4第二端口42流出进入经济器5。冷媒流向为：压缩机排气口---四通阀D端---E端---室外侧换热器---第三端口---第二端口---经济器---主电子膨胀阀---第四端口---第一端口---室内侧换热器---四通阀C端---S端---气液分离器---压缩机吸气口。In the cooling mode, as shown in Figure 3, the compressor 1, the four-way valve 2, the outdoor heat exchanger 7, the one-way valve assembly 4, the economizer 5, and the auxiliary electronic expansion valve 9 form a supplementary air circuit. The refrigerant condensed in the outer heat exchanger 7 flows in from the third port 43 of the one-way valve assembly 4 , flows out from the second port 42 of the one-way valve assembly 4 and enters the economizer 5 . The flow direction of refrigerant is: compressor exhaust port --- four-way valve D end --- E end --- outdoor heat exchanger --- third port --- second port --- economizer --- Main electronic expansion valve --- fourth port --- first port --- indoor heat exchanger --- four-way valve C end --- S end --- gas-liquid separator --- compressor suction breath.
所述经济器5为板式换热器，从单向阀组件4第二端口42流出的液态冷媒与经过辅助电子膨胀阀9节流后的气态冷媒在经济器5里换热，再经辅助电子膨胀阀后，流经经济器的气路，然后，流入压缩机的补气口。由于所述经济器的液路与气路为逆向换热设计，可保证最佳换热效果，液路冷媒被过冷后进入主循环回路，气路冷媒则通过管路进入压缩机。The economizer 5 is a plate heat exchanger. The liquid refrigerant flowing out from the second port 42 of the check valve assembly 4 exchanges heat with the gaseous refrigerant throttled by the auxiliary electronic expansion valve 9 in the economizer 5, and then passes through the auxiliary electronic expansion valve. After the expansion valve, it flows through the air circuit of the economizer, and then flows into the air supply port of the compressor. Since the liquid circuit and gas circuit of the economizer are designed for reverse heat exchange, the best heat exchange effect can be guaranteed. The liquid circuit refrigerant enters the main circulation loop after being overcooled, and the gas circuit refrigerant enters the compressor through the pipeline.
本发明未涉及部分均与现有技术相同或可采用现有技术加以实现。The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.
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| CN108954893A (en) * | 2018-06-26 | 2018-12-07 | 格力电器（合肥）有限公司 | Air conditioner system, air conditioner and air conditioner system detection method |
| CN111306725A (en) * | 2020-02-26 | 2020-06-19 | 海信（山东）空调有限公司 | Enhanced vapor injection air conditioning system and control method thereof |
| CN111536712A (en) * | 2020-04-13 | 2020-08-14 | 南京天加环境科技有限公司 | Double-compressor air source cold water heat pump unit and control method thereof |
| CN111561791A (en) * | 2020-06-12 | 2020-08-21 | 格瑞智慧人居环境科技(江苏)有限公司 | Air-cooled heat pump system for defrosting solution and control method thereof |
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| CN111306725B (en) * | 2020-02-26 | 2021-09-28 | 海信（山东）空调有限公司 | Enhanced vapor injection air conditioning system and control method thereof |
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| CN112744049A (en) * | 2021-02-07 | 2021-05-04 | 郑州科林车用空调有限公司 | Air supplementing and enthalpy increasing air conditioning system suitable for passenger car |
| CN114992910A (en) * | 2022-05-26 | 2022-09-02 | 浙江中广电器集团股份有限公司 | A three-stage compressed air source heat pump unit using flash tank and economizer |
| CN120232178A (en) * | 2025-05-29 | 2025-07-01 | 珠海格力电器股份有限公司 | Jet enthalpy heat pump system and control method thereof |
| CN120232178B (en) * | 2025-05-29 | 2025-08-19 | 珠海格力电器股份有限公司 | Vapor injection enthalpy-increasing heat pump system and control method thereof |
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