WO2021103465A1 - Multi-split system with double air-injection enthalpy-increasing compressors - Google Patents

Multi-split system with double air-injection enthalpy-increasing compressors Download PDF

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WO2021103465A1
WO2021103465A1 PCT/CN2020/093095 CN2020093095W WO2021103465A1 WO 2021103465 A1 WO2021103465 A1 WO 2021103465A1 CN 2020093095 W CN2020093095 W CN 2020093095W WO 2021103465 A1 WO2021103465 A1 WO 2021103465A1
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heat exchanger
plate heat
compressors
port
way valve
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PCT/CN2020/093095
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French (fr)
Chinese (zh)
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杨亚华
方杰
易博
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南京天加环境科技有限公司
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Publication of WO2021103465A1 publication Critical patent/WO2021103465A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • 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
    • 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

Definitions

  • the invention relates to an air conditioning system, in particular to a multi-line system with dual compressors, in particular to a multi-line system containing dual jet enthalpy compressors.
  • the purpose of the present invention is to address the shortcomings of the prior art, and provide a multi-line system with double jet enthalpy-enhancing compressors, which can independently and accurately control the two compressors, improve the control accuracy and jet effect, and improve the performance of the system. reliability.
  • a multi-line system with dual jet enthalpy-increasing compressors includes two jet-increasing enthalpy compressors.
  • the exhaust ports of the two compressors are connected in parallel after passing through an oil separator, and then connected to the four-way valve.
  • D port; the C port of the four-way valve is connected to the E port of the four-way valve after passing through the outdoor heat exchanger, the control system and the indoor heat exchanger in turn;
  • the S port of the four-way valve passes through the gas-liquid separator Connected to the suction ports of the two compressors respectively;
  • the control system includes a plate heat exchanger I and a plate heat exchanger II; the main side inlets of the two plate heat exchangers are connected in parallel with each other, and then connected to the outdoor heat exchanger after passing through an electronic expansion valve III; The main side outlets of the two plate heat exchangers are connected in parallel to each other and then connected to the indoor heat exchanger;
  • the auxiliary side outlet of the plate heat exchanger I is respectively connected with the jet port of the compressor I, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve I; the auxiliary side inlet of the plate heat exchanger I passes through After the electronic expansion valve I is connected to the main side inlet of the plate heat exchanger I;
  • the auxiliary side outlet of the plate heat exchanger II is respectively connected with the air jet port of the compressor II, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve II; the auxiliary side inlet of the plate heat exchanger II passes through The electronic expansion valve II is connected to the main side inlet of the plate heat exchanger II.
  • the indoor heat exchangers are connected in parallel in multiple groups.
  • auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger I are respectively provided with a temperature sensor I and a temperature sensor II.
  • auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger II are respectively provided with a temperature sensor III and a temperature sensor IV.
  • the invention has reasonable design, simple structure and high reliability.
  • the heat exchange is improved, thereby improving the control precision and the air injection effect of the compressor, and improving the overall performance of the system.
  • Figure 1 is a schematic diagram of the structure of the present invention.
  • 1- Compressor I 2- Compressor II; 3- Oil Separator II; 4- Oil Separator I; 5- Four-way Valve; 6-Outdoor Heat Exchanger; 7-Electronic Expansion Valve III; 8- Electronic expansion valve I; 9-Electronic expansion valve II; 10- Solenoid valve I; 11- Solenoid valve II; 12- Temperature sensor I; 13- Temperature sensor II; 14- Temperature sensor III; 15- Temperature sensor IV; 16- Indoor heat exchanger; 17-plate heat exchanger I; 18-plate heat exchanger II; 19-gas-liquid separator.
  • a multi-line system with double jet enthalpy-increasing compressor including compressor I1 and compressor II2.
  • the two compressors are both jet enthalpy compressors.
  • the compressor I1 and the compressor II2 are connected in parallel after passing through the oil separator I4 and the oil separator II3 respectively, and then connected to the D port of the four-way valve 5.
  • the C port of the four-way valve 5 is connected to the E port of the four-way valve 5 after passing through the outdoor heat exchanger 6, the electronic expansion valve III7, the control system and the indoor heat exchanger 16 in sequence.
  • the S ports of the four-way valve 5 are respectively connected to the suction ports of two compressors after passing through the gas-liquid separator 19.
  • the control system includes a plate heat exchanger I17 and a plate heat exchanger II18.
  • the main side inlets of the two plate heat exchangers are connected in parallel with each other, and then connected to the outdoor heat exchanger 6 after passing through the electronic expansion valve III7.
  • the main side outlets of the two plate heat exchangers are connected to the indoor heat exchanger 16 after being connected in parallel.
  • the auxiliary side outlets of the plate heat exchanger I17 are respectively connected to the jet port of the compressor I1, and are connected to the inlet of the gas-liquid separator 19 after passing through the solenoid valve I10.
  • the auxiliary side inlet of the plate heat exchanger I1 is connected to the main side inlet of the plate heat exchanger I17 after passing through the electronic expansion valve I8.
  • the auxiliary side outlets of the plate heat exchanger II18 are respectively connected to the air injection port of the compressor II2, and are connected to the inlet of the gas-liquid separator 19 after passing through the solenoid valve II11.
  • the auxiliary side inlet of the plate heat exchanger II2 is connected to the main side inlet of the plate heat exchanger II18 after passing through the electronic expansion valve II9.
  • the indoor heat exchanger 16 is connected in parallel in multiple groups.
  • the auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger I17 are respectively provided with a temperature sensor I12 and a temperature sensor II13.
  • the auxiliary side inlet and auxiliary side outlet of the plate heat exchanger II18 are respectively provided with a temperature sensor III14 and a temperature sensor IV15, which can measure the temperature of the refrigerant entering and leaving each plate heat exchanger, and provide information support for precise control: the electronic The expansion valve I8 adjusts its opening according to the temperature difference between the temperature sensor I12 and the temperature sensor II13; the electronic expansion valve II9 adjusts its opening according to the temperature difference between the temperature sensor III14 and the temperature sensor IV15.
  • the first step detecting the operating frequency of compressor I, when the operating frequency of compressor I ⁇ A rps, the solenoid valve I is opened,
  • the electronic expansion valve I is opened to a fixed opening degree P 1 ; when the operating frequency of the compressor I is greater than or equal to A rps, the solenoid valve I is closed, and the electronic expansion valve I is opened to an initial opening degree P 2 ;
  • Step two when the compressor operating frequency 1 ⁇ A rps, 40s each cycle, the temperature sensor detecting a temperature value T 1, the I and II the temperature sensor a temperature value T 2, if T 2 -T 1 ⁇ At T C , the electronic expansion valve I is opened by 8P;
  • Step 3 When the compressor I stops, the electronic expansion valve I and the solenoid valve I are closed.
  • the invention improves the heat exchange by controlling two plate heat exchangers and two solenoid valves, thereby improving the control accuracy and the air injection effect of the double-jet enthalpy-increasing compressor, and improves the overall performance of the system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Disclosed is a multi-split system with double air-injection enthalpy-increasing compressors. The multi-split system comprises two air-injection enthalpy-increasing compressors (1, 2). Exhaust ports of the two compressors (1, 2) are connected in parallel by means of an oil separator (3), and then connected to a port D of a four-way valve (5); a port C of the four-way valve (5) sequentially passes through an outdoor heat exchanger (6), a control system and an indoor heat exchanger (16), and then is connected to a port E of the four-way valve (5); a port S of the four-way valve (5) passes through a gas-liquid separator (19) and then is connected to air suction ports of the two compressors (1, 2) respectively; the control system comprises a first plate heat exchanger (17) and a second plate heat exchanger (18); main side inlets of the two plate heat exchangers (17, 18) are mutually connected in parallel, and then are connected to the outdoor heat exchanger (6) after passing through a third electronic expansion valve (7); and main side outlets of the two plate heat exchangers (17, 18) are mutually connected in parallel and then are connected to the indoor heat exchanger (16). The multi-split system is rational in terms of design and high in terms of reliability, and the double-plate heat exchanger structure is used, such that the heat exchange amount is increased, the control precision and the air injection effect of the compressors are improved, and the overall performance of the system is improved.

Description

一种含双喷气增焓压缩机的多联机系统A multi-line system containing double-jet enthalpy-increasing compressor 技术领域Technical field
本发明涉及一种空调系统，尤其是一种具有双压缩机的多联机系统，具体的说是一种含双喷气增焓压缩机的多联机系统。The invention relates to an air conditioning system, in particular to a multi-line system with dual compressors, in particular to a multi-line system containing dual jet enthalpy compressors.
背景技术Background technique
目前，喷气增焓压缩机已越来越多的被空调厂家熟悉、接受并应用。但是，对于采用双喷气增焓压缩机的系统，大都仍使用单个板式换热器和单个电子膨胀阀进行控制，存在控制精度低、运行效率差和容易造成干扰等问题，大大降低了整机系统的可靠性。因此，需要加以改进。At present, air-jet enthalpy-enhancing compressors have been more and more familiar, accepted and applied by air-conditioning manufacturers. However, for systems using dual-jet enthalpy-enhancing compressors, most of them still use a single plate heat exchanger and a single electronic expansion valve for control. There are problems such as low control accuracy, poor operating efficiency and easy interference, which greatly reduces the overall system Reliability. Therefore, it needs to be improved.
发明内容Summary of the invention
本发明的目的是针对现有技术的不足，提供一种含双喷气增焓压缩机的多联机系统，可对两台压缩机进行独立和精准的控制，提高控制精度和喷气效果，提升系统的可靠性。The purpose of the present invention is to address the shortcomings of the prior art, and provide a multi-line system with double jet enthalpy-enhancing compressors, which can independently and accurately control the two compressors, improve the control accuracy and jet effect, and improve the performance of the system. reliability.
本发明的技术方案是：The technical scheme of the present invention is:
一种含双喷气增焓压缩机的多联机系统，包括两台喷气增焓压缩机，该两台压缩机的排气口分别通过一个油分离器后进行并接，再连接到四通阀的D口；该四通阀的C口依次经过室外换热器、控制系统和室内换热器后连接到所述四通阀的E口；所述四通阀的S口经过气液分离器后分别连接到两台压缩机的吸气口；A multi-line system with dual jet enthalpy-increasing compressors includes two jet-increasing enthalpy compressors. The exhaust ports of the two compressors are connected in parallel after passing through an oil separator, and then connected to the four-way valve. D port; the C port of the four-way valve is connected to the E port of the four-way valve after passing through the outdoor heat exchanger, the control system and the indoor heat exchanger in turn; the S port of the four-way valve passes through the gas-liquid separator Connected to the suction ports of the two compressors respectively;
所述控制系统包括板式换热器I和板式换热器II；该两个板式换热器的主侧进口相互并接，再经过电子膨胀阀III后连接到所述室外换热器；该两个板式换热器的主侧出口相互并接后连接到所述室内换热器；The control system includes a plate heat exchanger I and a plate heat exchanger II; the main side inlets of the two plate heat exchangers are connected in parallel with each other, and then connected to the outdoor heat exchanger after passing through an electronic expansion valve III; The main side outlets of the two plate heat exchangers are connected in parallel to each other and then connected to the indoor heat exchanger;
所述板式换热器I的辅侧出口分别与所述压缩机I的喷气口相连，和经过电磁阀I后连接所述气液分离器的入口；该板式换热器I的辅侧进口经过电子膨胀阀I后连接该板式换热器I的主侧进口；The auxiliary side outlet of the plate heat exchanger I is respectively connected with the jet port of the compressor I, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve I; the auxiliary side inlet of the plate heat exchanger I passes through After the electronic expansion valve I is connected to the main side inlet of the plate heat exchanger I;
所述板式换热器II的辅侧出口分别与所述压缩机II的喷气口相连，和经过电磁阀II后连接所述气液分离器的入口；该板式换热器II的辅侧进口经过电子膨胀阀II后连接该板式换热器II的主侧进口。The auxiliary side outlet of the plate heat exchanger II is respectively connected with the air jet port of the compressor II, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve II; the auxiliary side inlet of the plate heat exchanger II passes through The electronic expansion valve II is connected to the main side inlet of the plate heat exchanger II.
进一步的，所述室内换热器为多组并联。Further, the indoor heat exchangers are connected in parallel in multiple groups.
进一步的，所述板式换热器I的辅侧进口和辅侧出口分别设有温度传感器I和温度传感器II。Further, the auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger I are respectively provided with a temperature sensor I and a temperature sensor II.
进一步的，所述板式换热器II的辅侧进口和辅侧出口分别设有温度传感器III和温度传感器IV。Further, the auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger II are respectively provided with a temperature sensor III and a temperature sensor IV.
本发明的有益效果：The beneficial effects of the present invention:
本发明设计合理，结构简单，可靠性高，通过采用双板式换热器结构，使换热量得到提升，从而提高了压缩机的控制精度和喷气效果，提升了系统的整体性能。The invention has reasonable design, simple structure and high reliability. By adopting the double-plate heat exchanger structure, the heat exchange is improved, thereby improving the control precision and the air injection effect of the compressor, and improving the overall performance of the system.
附图说明Description of the drawings
图1是本发明的结构示意图。Figure 1 is a schematic diagram of the structure of the present invention.
其中：1-压缩机I；2-压缩机II；3-油分离器II；4-油分离器I；5-四通阀；6-室外换热器；7-电子膨胀阀III；8-电子膨胀阀I；9-电子膨胀阀II；10-电磁阀I；11-电磁阀II；12-温度传感器I；13-温度传感器II；14-温度传感器III；15-温度传感器IV；16-室内换热器；17-板式换热器I；18-板式换热器II；19-气液分离器。Among them: 1- Compressor I; 2- Compressor II; 3- Oil Separator II; 4- Oil Separator I; 5- Four-way Valve; 6-Outdoor Heat Exchanger; 7-Electronic Expansion Valve III; 8- Electronic expansion valve I; 9-Electronic expansion valve II; 10- Solenoid valve I; 11- Solenoid valve II; 12- Temperature sensor I; 13- Temperature sensor II; 14- Temperature sensor III; 15- Temperature sensor IV; 16- Indoor heat exchanger; 17-plate heat exchanger I; 18-plate heat exchanger II; 19-gas-liquid separator.
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 with reference to the drawings and embodiments.
如图1所示。As shown in Figure 1.
一种含双喷气增焓压缩机的多联机系统，包括压缩机I1和压缩机II2。该两台压缩机均为喷气增焓压缩机。所述压缩机I1和压缩机II2分别经过油分离器I4和油分离器II3后进行并接，再连接到四通阀5的D口。该四通阀5的C口依次经过室外换热器6、电子膨胀阀III7、控制系统和室内换热器16后连接到所述四通阀5的E口。所述四通阀5的S口经过气液分离器19后分别连接到两台压缩机的吸气口。A multi-line system with double jet enthalpy-increasing compressor, including compressor I1 and compressor II2. The two compressors are both jet enthalpy compressors. The compressor I1 and the compressor II2 are connected in parallel after passing through the oil separator I4 and the oil separator II3 respectively, and then connected to the D port of the four-way valve 5. The C port of the four-way valve 5 is connected to the E port of the four-way valve 5 after passing through the outdoor heat exchanger 6, the electronic expansion valve III7, the control system and the indoor heat exchanger 16 in sequence. The S ports of the four-way valve 5 are respectively connected to the suction ports of two compressors after passing through the gas-liquid separator 19.
所述控制系统包括板式换热器I17和板式换热器II18。该两个板式换热器的主侧进口相互并接，再经过所述电子膨胀阀III7后连接到所述室外换热器6。该两个板式换热器的主侧出口相互并接后连接到所述室内换热器16。The control system includes a plate heat exchanger I17 and a plate heat exchanger II18. The main side inlets of the two plate heat exchangers are connected in parallel with each other, and then connected to the outdoor heat exchanger 6 after passing through the electronic expansion valve III7. The main side outlets of the two plate heat exchangers are connected to the indoor heat exchanger 16 after being connected in parallel.
所述板式换热器I17的辅侧出口分别与所述压缩机I1的喷气口相连，以及经过电磁阀I10后连接所述气液分离器19的入口。该板式换热器I1的辅侧进口经过电子膨胀阀I8后连接该板式换热器I17的主侧进口。The auxiliary side outlets of the plate heat exchanger I17 are respectively connected to the jet port of the compressor I1, and are connected to the inlet of the gas-liquid separator 19 after passing through the solenoid valve I10. The auxiliary side inlet of the plate heat exchanger I1 is connected to the main side inlet of the plate heat exchanger I17 after passing through the electronic expansion valve I8.
所述板式换热器II18的辅侧出口分别与所述压缩机II2的喷气口相连，以及经过电磁阀II11后连接所述气液分离器19的入口。该板式换热器II2的辅侧进口经过电子膨胀阀II9后连接该板式换热器II18的主侧进口。The auxiliary side outlets of the plate heat exchanger II18 are respectively connected to the air injection port of the compressor II2, and are connected to the inlet of the gas-liquid separator 19 after passing through the solenoid valve II11. The auxiliary side inlet of the plate heat exchanger II2 is connected to the main side inlet of the plate heat exchanger II18 after passing through the electronic expansion valve II9.
所述室内换热器16为多组并联。The indoor heat exchanger 16 is connected in parallel in multiple groups.
所述板式换热器I17的辅侧进口和辅侧出口分别设有温度传感器I12和温度传感器 II13。所述板式换热器II18的辅侧进口和辅侧出口分别设有温度传感器III14和温度传感器IV15，可以对进出各板式换热器的冷媒进行测温，为精准控制提供信息支持：所述电子膨胀阀I8根据所述温度传感器I12与所述温度传感器II13的温度差值调节开度；所述电子膨胀阀II9根据所述温度传感器III14与所述温度传感器IV15的温度差值调节开度。The auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger I17 are respectively provided with a temperature sensor I12 and a temperature sensor II13. The auxiliary side inlet and auxiliary side outlet of the plate heat exchanger II18 are respectively provided with a temperature sensor III14 and a temperature sensor IV15, which can measure the temperature of the refrigerant entering and leaving each plate heat exchanger, and provide information support for precise control: the electronic The expansion valve I8 adjusts its opening according to the temperature difference between the temperature sensor I12 and the temperature sensor II13; the electronic expansion valve II9 adjusts its opening according to the temperature difference between the temperature sensor III14 and the temperature sensor IV15.
所述电子膨胀阀I和电磁阀I的控制方法如下：The control methods of the electronic expansion valve I and the solenoid valve I are as follows:
第一步：检测压缩机I运行频率，当压缩机I运行频率＜A rps时，所述电磁阀I开启，The first step: detecting the operating frequency of compressor I, when the operating frequency of compressor I <A rps, the solenoid valve I is opened,
所述电子膨胀阀I开启至固定开度P 1；当压缩机I运行频率≥A rps时，所述电磁阀I关闭，电子膨胀阀I开启至初始开度P 2； The electronic expansion valve I is opened to a fixed opening degree P 1 ; when the operating frequency of the compressor I is greater than or equal to A rps, the solenoid valve I is closed, and the electronic expansion valve I is opened to an initial opening degree P 2 ;
第二步：当压缩机1运行频率≥A rps时，每40s一周期，检测所述温度传感器I的温度值T 1与所述温度传感器II的温度值T 2，当T 2-T 1≥T C时，所述电子膨胀阀I开大8P； Step two: when the compressor operating frequency 1 ≥A rps, 40s each cycle, the temperature sensor detecting a temperature value T 1, the I and II the temperature sensor a temperature value T 2, if T 2 -T 1 ≥ At T C , the electronic expansion valve I is opened by 8P;
当T d≤T 2-T 1＜T c时，所述电子膨胀阀I保持当前开度；当T 2-T 1＜T d时，所述电子膨胀阀I关闭4P； When T d ≤ T 2 -T 1 ＜T c , the electronic expansion valve I maintains the current opening; when T 2 -T 1 ＜T d , the electronic expansion valve I closes 4P;
其中，A为40～60rps；P 1＜P 2；T c为5℃以上，T d为3℃以下； Among them, A is 40-60 rps; P 1 <P 2 ; T c is above 5°C, and T d is below 3°C;
第三步：当所述压缩机I停止时，所述电子膨胀阀I和电磁阀I关闭。Step 3: When the compressor I stops, the electronic expansion valve I and the solenoid valve I are closed.
所述电子膨胀阀II9和电磁阀II11的调节方法同上。The adjustment methods of the electronic expansion valve II9 and the solenoid valve II11 are the same as above.
本发明通过控制两个板式换热器和两个电磁阀，使换热量得到提升，从而提高了双喷气增焓压缩机的控制精度和喷气效果，提升了系统的整体性能。The invention improves the heat exchange by controlling two plate heat exchangers and two solenoid valves, thereby improving the control accuracy and the air injection effect of the double-jet enthalpy-increasing compressor, and improves the overall performance of the system.
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 using the prior art.

Claims (4)

  1. 一种含双喷气增焓压缩机的多联机系统，包括两台喷气增焓压缩机，其特征是：该两台压缩机的排气口分别通过一个油分离器后进行并接，再连接到四通阀的D口；该四通阀的C口依次经过室外换热器、控制系统和室内换热器后连接到所述四通阀的E口；所述四通阀的S口经过气液分离器后分别连接到两台压缩机的吸气口；A multi-line system containing dual jet enthalpy compressors, including two jet enthalpy compressors, characterized in that: the exhaust ports of the two compressors are connected in parallel after passing through an oil separator, and then connected to Port D of the four-way valve; Port C of the four-way valve is connected to port E of the four-way valve after passing through the outdoor heat exchanger, the control system and the indoor heat exchanger in turn; Port S of the four-way valve passes through the air After the liquid separator is connected to the suction ports of the two compressors;
    所述控制系统包括板式换热器I和板式换热器II；该两个板式换热器的主侧进口相互并接，再经过电子膨胀阀III后连接到所述室外换热器；该两个板式换热器的主侧出口相互并接后连接到所述室内换热器；The control system includes a plate heat exchanger I and a plate heat exchanger II; the main side inlets of the two plate heat exchangers are connected in parallel with each other, and then connected to the outdoor heat exchanger after passing through an electronic expansion valve III; The main side outlets of the two plate heat exchangers are connected in parallel to each other and then connected to the indoor heat exchanger;
    所述板式换热器I的辅侧出口分别与所述压缩机I的喷气口相连，和经过电磁阀I后连接所述气液分离器的入口；该板式换热器I的辅侧进口经过电子膨胀阀I后连接该板式换热器I的主侧进口；The auxiliary side outlet of the plate heat exchanger I is respectively connected with the jet port of the compressor I, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve I; the auxiliary side inlet of the plate heat exchanger I passes After the electronic expansion valve I is connected to the main side inlet of the plate heat exchanger I;
    所述板式换热器II的辅侧出口分别与所述压缩机II的喷气口相连，和经过电磁阀II后连接所述气液分离器的入口；该板式换热器II的辅侧进口经过电子膨胀阀II后连接该板式换热器II的主侧进口。The auxiliary side outlet of the plate heat exchanger II is respectively connected with the air jet port of the compressor II, and is connected to the inlet of the gas-liquid separator after passing through the solenoid valve II; the auxiliary side inlet of the plate heat exchanger II passes through The electronic expansion valve II is connected to the main side inlet of the plate heat exchanger II.
  2. 根据权利要求1所述的含双喷气增焓压缩机的多联机系统，其特征是：所述室内换热器为多组并联。The multi-line system containing dual jet enthalpy-increasing compressors according to claim 1, characterized in that: the indoor heat exchangers are connected in parallel in multiple groups.
  3. 根据权利要求1所述的含双喷气增焓压缩机的多联机系统，其特征是：所述板式换热器I的辅侧进口和辅侧出口分别设有温度传感器I和温度传感器II。The multi-line system with dual jet enthalpy-enhancing compressors according to claim 1, characterized in that: the auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger I are respectively provided with a temperature sensor I and a temperature sensor II.
  4. 根据权利要求1所述的含双喷气增焓压缩机的多联机系统，其特征是：所述板式换热器II的辅侧进口和辅侧出口分别设有温度传感器III和温度传感器IV。The multi-line system with dual jet enthalpy-enhancing compressors according to claim 1, characterized in that: the auxiliary side inlet and the auxiliary side outlet of the plate heat exchanger II are respectively provided with a temperature sensor III and a temperature sensor IV.
PCT/CN2020/093095 2019-11-27 2020-05-29 Multi-split system with double air-injection enthalpy-increasing compressors WO2021103465A1 (en)

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