WO2019061914A1 - 新风空调系统及控制方法 - Google Patents

新风空调系统及控制方法 Download PDF

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Publication number
WO2019061914A1
WO2019061914A1 PCT/CN2017/119350 CN2017119350W WO2019061914A1 WO 2019061914 A1 WO2019061914 A1 WO 2019061914A1 CN 2017119350 W CN2017119350 W CN 2017119350W WO 2019061914 A1 WO2019061914 A1 WO 2019061914A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
port
way valve
indoor heat
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/119350
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English (en)
French (fr)
Chinese (zh)
Inventor
张蕾
刘春慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Highly Electrical Appliances Co Ltd
Original Assignee
Shanghai Highly Electrical Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Highly Electrical Appliances Co Ltd filed Critical Shanghai Highly Electrical Appliances Co Ltd
Priority to JP2019542597A priority Critical patent/JP6827550B2/ja
Priority to US16/479,603 priority patent/US11480369B2/en
Publication of WO2019061914A1 publication Critical patent/WO2019061914A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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
    • F24F11/00—Control or safety arrangements
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • 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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0401—Refrigeration circuit bypassing means for the compressor
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/16—Lubrication
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass valves

Definitions

  • the invention relates to the field of air conditioning systems, and in particular to a fresh air air conditioning system and a control method.
  • the object of the present invention is to provide a fresh air air-conditioning system and a control method thereof, which solves the problem that in the prior art, the partial load of the air-conditioning system, the long-term single-cylinder operation of the compressor causes the compressor to return poorly and the system returns frequently, and the indoor side is comfortable. Sexuality has a certain impact.
  • the present invention provides a fresh air air conditioning system including: an indoor unit and an outdoor unit; the indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger; the outdoor unit includes a compressor, and a suction a gas bypass circuit, a first accumulator, and a second accumulator; the intake bypass circuit includes a first solenoid valve, a second solenoid valve, and a third solenoid valve, the first end of the first solenoid valve Connecting the first end of the first indoor heat exchanger, the second end of the first electromagnetic valve is connected to the first suction end of the compressor and the third electromagnetic valve through the first accumulator One end, the second end of the third solenoid valve is connected to the second suction end of the compressor and the first end of the second solenoid valve through the second accumulator, the second solenoid valve a second end connected to the first end of the second indoor heat exchanger; wherein, when the first indoor heat exchanger or the second indoor heat exchanger is closed, the third electromagnetic valve
  • the outdoor unit further includes an outdoor heat exchanger, a first four-way valve, and a second four-way valve, wherein the first end of the first indoor heat exchanger is connected to the first four-way valve a first port E, a second port S of the first four-way valve is connected to the first end of the first electromagnetic valve, and a second end of the first indoor heat exchanger is connected to the outdoor heat exchanger
  • the first end of the outdoor heat exchanger is connected to the third port C of the first four-way valve and the third port C of the second four-way valve
  • the first four-way valve a fourth port D is connected to the exhaust end of the compressor
  • the first end of the second indoor heat exchanger is connected to the first port E of the second four-way valve
  • the second four-way valve a second port S is connected to the second end of the second electromagnetic valve
  • a second end of the second indoor heat exchanger is connected to the first end of the outdoor heat exchanger
  • the second four-way A fourth port D of the valve is coupled to the exhaust end of
  • the indoor unit further includes a first throttle mechanism and a second throttle mechanism, wherein the first throttle mechanism throttles and depressurizes the refrigerant passing through the first indoor heat exchanger, The second throttle mechanism throttles and depressurizes the refrigerant passing through the second indoor heat exchanger.
  • the first throttle mechanism is an electronic expansion valve
  • the second throttle mechanism is an electronic expansion valve
  • the present invention also provides a control method of a fresh air air conditioning system, the method comprising: when the first indoor heat exchanger or the second heat exchanger is turned off, the third electromagnetic valve is opened such that the first The accumulator and the second accumulator are simultaneously communicated to one of the first indoor heat exchanger and the second indoor heat exchanger.
  • the second electromagnetic valve is further closed.
  • the first solenoid valve when the first indoor heat exchanger is turned on and the second indoor heat exchanger is turned off, the second electromagnetic valve is further closed.
  • the outdoor unit further includes an outer heat exchanger and a first four-way valve
  • the fresh air air conditioning system is set to be in a cooling mode
  • the compressor makes the refrigerant
  • the exhaust end enters the fourth port D of the first four-way valve, and enters the outdoor heat exchanger from the third port C of the first four-way valve to dissipate heat, and then enters the first indoor heat exchange
  • the device is cooled, and then passes through the first port E and the second port S of the first four-way valve to enter the first accumulator and the second accumulator.
  • the outdoor unit further includes an external heat exchanger and a first four-way valve
  • the new air-conditioning system is set to be in a heating mode
  • the compressor makes the refrigerant Entering the fourth port D of the first four-way valve from the exhaust end, and entering the first indoor heat exchanger from the first port E of the first four-way valve to dissipate heat, and then enter the outdoor heat
  • the exchanger absorbs heat and then enters the first reservoir and the second reservoir through the third port C and the second port S of the first four-way valve.
  • the method further includes: closing the first electromagnetic valve, opening The second solenoid valve.
  • the outdoor unit further includes an outer heat exchanger and a second four-way valve
  • the fresh air air conditioning system is set to be in a cooling mode
  • the compressor makes the refrigerant
  • the exhaust end enters the fourth port D of the second four-way valve, and enters the outdoor heat exchanger from the third port C of the second four-way valve to dissipate heat, and then enters the second indoor heat exchanger for cooling
  • the first port E and the second port S of the second four-way valve enter the first accumulator and the second accumulator.
  • the outdoor unit further includes an external heat exchanger and a second four-way valve
  • the new air-conditioning system is set to be in a heating mode
  • the compressor makes the refrigerant Entering the fourth port D of the second four-way valve from the exhaust end, and entering the first indoor heat exchanger from the first port E of the second four-way valve to dissipate heat, and then enter the outdoor heat
  • the exchanger absorbs heat and then enters the first reservoir and the second reservoir through the third port C and the second port S of the second four-way valve.
  • the fresh air air conditioning system includes an indoor unit and an outdoor unit; the indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger; and the outdoor unit includes compression Machine, suction bypass circuit, first accumulator and second accumulator.
  • the intake bypass circuit realizes that the first liquid storage device and the second liquid storage device simultaneously communicate to the first The one opened in the indoor heat exchanger and the second indoor heat exchanger avoids the long-term single cylinder operation of the compressor, thereby causing poor oil return, ensuring the reliability of the compressor and improving the performance of the fresh air air conditioning system. It ensures the comfort of the indoor side and brings a better experience to the user.
  • FIG. 1 is a schematic structural diagram of a fresh air air conditioning system according to an embodiment of the present invention
  • 1-indoor machine 11-first indoor heat exchanger, 12-first throttle mechanism, 13-second indoor heat exchanger, 14-second throttle mechanism, 2-outdoor machine, 21-compressor , 22-first reservoir, 23-second reservoir, 24-first solenoid valve, 25-second solenoid valve, 26-third solenoid valve, 27-outdoor heat exchanger, 28-first four Through valve, 29-second four-way valve.
  • the fresh air air conditioning system includes an indoor unit 1 and an outdoor unit 2; the indoor unit 1 includes a first indoor heat exchanger 11 And a second indoor heat exchanger 13; the outdoor unit 2 includes a compressor 21 and an intake bypass circuit; when the first indoor heat exchanger 11 or the second indoor heat exchanger 13 is closed,
  • the suction bypass circuit realizes simultaneous operation of the two cylinders of the compressor 21 (each cylinder corresponding to one suction line and one suction end).
  • the control method of the fresh air air conditioning system includes an indoor unit 1 and an outdoor unit 2; the indoor unit 1 includes a first indoor heat exchanger 11 and a second indoor heat exchanger 13; the outdoor unit 2 includes compression Machine 21 and an intake bypass circuit; the method includes, when the first indoor heat exchanger 11 or the second heat exchanger 13 is closed, the intake bypass circuit causes the compressor 21 to Both cylinders operate at the same time.
  • the intake bypass circuit includes a first electromagnetic valve 24, a third electromagnetic valve 26 and a second electromagnetic valve 25 connected in sequence, one end of the first electromagnetic valve 24 is connected to one end of the first indoor heat exchanger 11, The other end is connected to the suction end A of the compressor 21 and one end of the third electromagnetic valve 26, and the other end of the third electromagnetic valve 26 is connected to the suction end B of the compressor 21 and the second electromagnetic valve 25. At one end, the other end of the second solenoid valve 25 is connected to one end of the second indoor heat exchanger 13.
  • the outdoor unit 2 further includes a first accumulator 22 and a second accumulator 23, and the inhalation end A of the compressor 21 is connected to the first solenoid valve 24 through the first accumulator 22
  • One end and one end of the third solenoid valve 26 the suction end B of the compressor 21 is connected to the other end of the third solenoid valve 26 and one end of the second solenoid valve 25 through the second accumulator 23.
  • first indoor heat exchanger 11 is connected to the first port E of the first four-way valve 28, and the second port S of the first four-way valve 28 is connected to one end of the first electromagnetic valve 24,
  • the other end of the first indoor heat exchanger 11 is connected to one end of the outdoor heat exchanger 27, and the other end of the outdoor heat exchanger 27 is connected to the third port C of the first four-way valve 28 and the a third port C of the second four-way valve 29, a fourth port D of the first four-way valve 28 is connected to the exhaust end W of the compressor 21, and one end of the second indoor heat exchanger 13 is connected a first port E of the second four-way valve 29, a second port S of the second four-way valve 29 is connected to the other end of the second solenoid valve 25, and the other end of the second indoor heat exchanger 13
  • One end of the outdoor heat exchanger 27 is connected, and the fourth port D of the second four-way valve 29 is connected to the exhaust end W of the compressor 21.
  • the switching mode of the suction side bypass circuit of the compressor is as follows:
  • the outdoor unit 2 includes an outdoor heat exchanger 27, a first four-way valve 28, a second four-way valve 29, a first accumulator 22 and a second accumulator 23, and the indoor unit 1
  • a first throttle mechanism 12 and a second throttle mechanism 14 are included.
  • the fresh air air conditioning system is set to be in the cooling mode, and the refrigerant gas whose low temperature and low pressure refrigerant gas is sucked by the compressor 21 and then pressurized to become high temperature and high pressure enters the first four-way valve from the exhaust end W of the compressor 21, respectively.
  • the high-temperature and high-pressure refrigerant gas dissipates heat in the outdoor heat exchanger 27 (condensed by the condenser) into a medium-temperature high-pressure liquid (heat is taken away by the outdoor circulating air), and the medium-temperature high-pressure liquid passes through the first throttling, respectively.
  • the mechanism 12 and the second throttle mechanism 14 are throttled and reduced to become a low temperature and low pressure liquid, and the low temperature and low pressure liquid refrigerant enters the first indoor heat exchanger 11 and the second indoor heat exchanger 13 respectively to absorb heat (through After the evaporator), the gas becomes a low-temperature low-pressure gas (the indoor air is cooled and cooled through the surface of the heat exchanger to achieve the purpose of lowering the temperature in the room), and then the low-temperature low-pressure gas in the first indoor heat exchanger 11 passes through the first four-way valve 28 First port E and the second port S enter the first accumulator 22, and the low temperature and low pressure gas in the second indoor heat exchanger 13 passes through the first port E and the second port S of the second four-way valve 29 into the second accumulator 23. The low temperature and low pressure refrigerant gas is again sucked by the compressor 21 and circulated.
  • the fresh air air conditioning system is set in the heating mode, and the low temperature and low pressure refrigerant gas is pressurized by the compressor and then pressurized to become a high temperature and high pressure refrigerant gas from the exhaust end W of the compressor 21 to the first four-way valve.
  • the fourth port D of 28 and the fourth port D of the second four-way valve 29 enter the first indoor heat from the first port E of the first four-way valve 28 and the fourth port D of the second four-way valve 29, respectively.
  • the exchanger 11 condenses and releases heat into a medium-temperature high-pressure liquid (the indoor air is heated through the surface of the heat exchanger to achieve the purpose of raising the temperature in the room), and the medium-temperature high-pressure liquid passes through the first throttle mechanism 12 and the second throttle.
  • the mechanism 14 After the mechanism 14 is throttled and depressurized, it becomes a low-temperature and low-pressure liquid, and the low-temperature and low-pressure liquid enters the outdoor heat exchanger 27 and absorbs heat and evaporates to become a low-temperature and low-pressure gas (the outdoor air is cooled and cooled through the surface of the heat exchanger), and then
  • the low temperature and low pressure gas in the indoor heat exchanger 11 enters the first accumulator 22 through the third port C and the second port S of the first four-way valve 28, and the low-temperature low-pressure gas passes through the second indoor heat exchanger 13 Third port C and second of the two-way valve 29
  • the port S enters the second accumulator 23, and finally the low-temperature and low-pressure gas is again sucked by the compressor 21, thus circulating.
  • the outdoor unit 2 includes an outer heat exchanger 27, a first four-way valve 28, a first accumulator 22, and a second accumulator 23, and the indoor unit 1 includes a first throttle mechanism 12 .
  • the fresh air air-conditioning system is in the cooling mode, and the low-temperature low-pressure refrigerant gas is sucked by the compressor 21 and then pressurized to become a high-temperature high-pressure refrigerant gas from the exhaust end W of the compressor 21 into the first four-way valve 28
  • the fourth port D enters the outdoor heat exchanger from the third port C of the first four-way valve 28, and the high-temperature high-pressure refrigerant gas dissipates heat in the outdoor heat exchanger 27 (condensed by the condenser) to become a medium-temperature high-pressure
  • the liquid heat is taken away by the outdoor circulating air
  • the medium-temperature high-pressure liquid is throttled and depressurized by the first throttle mechanism 12 to become a low-temperature low-pressure liquid
  • the low-temperature low-pressure liquid refrigerant enters the first indoor heat exchanger 11
  • the medium absorbs heat (through the evaporator) and becomes a low-temperature and low-pressure gas (the
  • the fresh air air conditioning system is set in the heating mode, and the low temperature and low pressure refrigerant gas is sucked by the compressor 21 and then pressurized to become a high temperature and high pressure refrigerant gas from the compressor exhaust end into the first four-way valve 28 Four ports D, and from the first port E of the first four-way valve 28 enters the first indoor heat exchanger 11 to condense and release heat into a medium-temperature high-pressure liquid (the indoor air is heated through the surface of the heat exchanger to achieve a temperature rise in the room) High purpose), the medium temperature and high pressure liquid is then thawed and depressurized by the first throttling mechanism 12 to become a low temperature and low pressure liquid, and the low temperature and low pressure liquid enters the outdoor heat exchanger 27 to absorb the heat and evaporate and become a low temperature and low pressure gas.
  • the outdoor air is cooled and cooled through the surface of the heat exchanger
  • the low pressure gas is again sucked in by the compressor 21 and thus circulated.
  • the outdoor unit 2 includes an outdoor heat exchanger 27, a second four-way valve 29, a first accumulator 22, and a second accumulator 23, and the indoor unit 1 includes a second throttle mechanism 14 .
  • the fresh air air-conditioning system is set to be in the cooling mode, and the low-temperature low-pressure refrigerant gas is taken in by the compressor 21 and then pressurized to become a high-temperature high-pressure refrigerant gas.
  • the refrigerant gas from the exhaust end W of the compressor 21 enters the second four-way valve 29
  • the fourth port D enters the outdoor heat exchanger from the third port C of the second four-way valve 29, and the high-temperature high-pressure refrigerant gas dissipates heat in the outdoor heat exchanger 27 (condenses through the condenser) to become a medium-temperature high-pressure
  • the liquid heat is taken away by the outdoor circulating air
  • the medium-temperature high-pressure liquid is throttled and depressurized by the second throttle mechanism 14 to become a low-temperature low-pressure liquid
  • the low-temperature low-pressure liquid refrigerant enters the second indoor heat exchanger 13
  • the medium absorbs heat (through the evaporator) and becomes
  • the low temperature and low pressure refrigerant gas is sucked by the compressor 21 and then pressurized to become a high temperature and high pressure refrigerant gas from the compressor exhaust end to the second four-way valve 29 Four ports D, and from the first port E of the second four-way valve 29 enters the second indoor heat exchanger 13 to condense and release heat into a medium-temperature high-pressure liquid (the indoor air is heated through the heat exchanger surface to reach the indoor temperature rise For high purpose), the medium-temperature high-pressure liquid is throttled and depressurized by the second throttle mechanism 14 to become a low-temperature low-pressure liquid, and the low-temperature low-pressure liquid enters the outdoor heat exchanger 27 to be heated to evaporate and become a low-temperature low-pressure gas.
  • the outdoor air is cooled and cooled by the surface of the heat exchanger), and then enters the first reservoir 22 and the second reservoir 23 through the third port C and the second port S of the second four-way valve 29, and finally the low temperature
  • the low pressure gas is again sucked in by the compressor 21 and thus circulated.
  • the first throttle mechanism 12 depressurizes the refrigerant that has passed through the first indoor heat exchanger 11, and the second throttle mechanism 14 depressurizes the refrigerant that has passed through the second indoor heat exchanger 13.
  • the first throttle mechanism 12 is an electronic expansion valve
  • the second throttle mechanism 14 is an electronic expansion valve
  • the first throttle mechanism and the second throttle mechanism may also be other devices or device combinations having a throttling function such as a capillary.
  • the first four-way valve 28 and the second four-way valve 29 function to change the flow direction of the refrigerant, so that the evaporator when the original cooling is operated becomes a condenser, that is, the indoor heat exchanger, when cooling
  • the evaporator is used as a condenser for heating.
  • the refrigerant releases heat in the condenser, and the heat is blown into the room by the fan to achieve heating.
  • the fresh air air conditioning system includes an indoor unit and an outdoor unit; the indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger; Includes compressor and suction bypass circuit.
  • the first indoor heat exchanger or the second indoor heat exchanger is turned off, and the closed indoor heat exchanger is closed corresponding to the throttle mechanism.
  • the two cylinders of the compressor can be operated at the same time, thereby avoiding the long-term single cylinder operation of the compressor and causing poor oil return. The situation ensures the reliability of the compressor, improves the performance of the fresh air conditioning system, ensures the comfort of the indoor side, and brings a better experience to the user.

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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)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)
PCT/CN2017/119350 2017-09-29 2017-12-28 新风空调系统及控制方法 Ceased WO2019061914A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019542597A JP6827550B2 (ja) 2017-09-29 2017-12-28 外気空調システムおよび制御方法
US16/479,603 US11480369B2 (en) 2017-09-29 2017-12-28 Fresh-air air conditioning system and control method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710912028.6A CN109595845B (zh) 2017-09-29 2017-09-29 新风空调系统及控制方法
CN2017109120286 2017-09-29

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WO2019061914A1 true WO2019061914A1 (zh) 2019-04-04

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JP (1) JP6827550B2 (https=)
CN (1) CN109595845B (https=)
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CN110779115A (zh) * 2019-11-29 2020-02-11 无锡同方人工环境有限公司 一种用于被动式住宅的空调独立除湿系统
WO2021233343A1 (zh) * 2020-08-28 2021-11-25 青岛海尔空调电子有限公司 多联机空调系统的回油控制方法
CN114234306A (zh) * 2020-09-08 2022-03-25 上海海立电器有限公司 换向阀及双蒸发温度空调系统

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CN110425765B (zh) * 2019-08-26 2023-10-10 珠海格力电器股份有限公司 换热系统及控制方法
CN110631286B (zh) * 2019-10-18 2023-10-10 珠海格力电器股份有限公司 换热系统及控制方法
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