WO2021103465A1 - Système à divisions multiples ayant des compresseurs d'augmentation d'enthalpie à double injection d'air - Google Patents

Système à divisions multiples ayant des compresseurs d'augmentation d'enthalpie à double injection d'air Download PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
heat exchanger
plate heat
compressors
port
way valve
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Application number
PCT/CN2020/093095
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English (en)
Chinese (zh)
Inventor
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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Application filed by 南京天加环境科技有限公司 filed Critical 南京天加环境科技有限公司
Publication of WO2021103465A1 publication Critical patent/WO2021103465A1/fr

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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

La présente invention concerne un système à divisions multiples ayant des compresseurs d'augmentation d'enthalpie à double injection d'air. Le système à divisions multiples comprend deux compresseurs d'augmentation d'enthalpie à injection d'air (1, 2). Des orifices d'échappement des deux compresseurs (1, 2) sont reliés en parallèle au moyen d'un séparateur d'huile (3) et sont ensuite reliés à un orifice D d'une vanne à quatre voies (5) ; un orifice C de la vanne à quatre voies (5) passe de manière séquentielle à travers un échangeur de chaleur extérieur (6), un système de commande et un échangeur de chaleur intérieur (16) et est ensuite relié à un orifice E de la vanne à quatre voies (5) ; un orifice S de la vanne à quatre voies (5) passe à travers un séparateur gaz-liquide (19) et est ensuite relié à des orifices d'aspiration d'air des deux compresseurs (1, 2) respectivement ; le système de commande comprend un premier échangeur de chaleur à plaques (17) et un second échangeur de chaleur à plaques (18) ; des entrées latérales principales des deux échangeurs de chaleur à plaques (17, 18) sont mutuellement reliées en parallèle et sont ensuite reliées à l'échangeur de chaleur extérieur (6) après avoir traversé une troisième vanne de détente électronique (7) ; et des sorties latérales principales des deux échangeurs de chaleur à plaques (17, 18) sont mutuellement reliées en parallèle et sont ensuite reliées à l'échangeur de chaleur intérieur (16). Le système à divisions multiples est rationnel en termes de conception et de fiabilité élevée et la structure d'échangeur de chaleur à double plaque est utilisée de telle sorte que la quantité d'échange de chaleur soit accrue, que la précision de commande et l'effet d'injection d'air des compresseurs soient améliorés et que la performance globale du système soit améliorée.
PCT/CN2020/093095 2019-11-27 2020-05-29 Système à divisions multiples ayant des compresseurs d'augmentation d'enthalpie à double injection d'air WO2021103465A1 (fr)

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CN201911178495.6 2019-11-27
CN201911178495.6A CN110925874A (zh) 2019-11-27 2019-11-27 一种含双喷气增焓压缩机的多联机系统

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CN111536712A (zh) * 2020-04-13 2020-08-14 南京天加环境科技有限公司 一种双压缩机空气源冷水热泵机组及其控制方法
CN111609588B (zh) * 2020-04-24 2022-03-18 珠海格力电器股份有限公司 一种双温空调系统、控制方法和空调器
CN111928517A (zh) * 2020-08-18 2020-11-13 南京天加环境科技有限公司 一种基于双压缩机的多联机空调系统及其控制方法

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Publication number Priority date Publication date Assignee Title
CN115727578A (zh) * 2022-11-23 2023-03-03 宁波奥克斯电气股份有限公司 一种补气增焓控制方法、装置、空调器及存储介质
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