EP3640549A1 - Système de climatisation et climatiseur doté dudit système - Google Patents

Système de climatisation et climatiseur doté dudit système Download PDF

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Publication number
EP3640549A1
EP3640549A1 EP18892332.0A EP18892332A EP3640549A1 EP 3640549 A1 EP3640549 A1 EP 3640549A1 EP 18892332 A EP18892332 A EP 18892332A EP 3640549 A1 EP3640549 A1 EP 3640549A1
Authority
EP
European Patent Office
Prior art keywords
pipeline
liquid separator
cylinder
communication
air
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.)
Pending
Application number
EP18892332.0A
Other languages
German (de)
English (en)
Other versions
EP3640549A4 (fr
Inventor
Hui Dong
Lingao LU
Liang Liu
Qingbo CAI
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.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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 Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Publication of EP3640549A1 publication Critical patent/EP3640549A1/fr
Publication of EP3640549A4 publication Critical patent/EP3640549A4/fr
Pending 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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member

Definitions

  • the present disclosure relates to the technical field of air-conditioning equipment, and in particular, to an air-conditioning system and an air conditioner having the same.
  • the lowest evaporating temperature obtained by the double-stage compression refrigeration device employing medium-temperature refrigerant is also limited by a series of problems caused by too low evaporation pressure.
  • the pressure difference between the evaporator pressure and the outside pressure increases, the possibility that the air infiltrates into the system increases, which will affect the normal operation of the system.
  • the suction specific volume is large, and the gas actually sucked into the cylinder is reduced, which causes an increase of the size of the cylinder. Therefore, when a low evaporation temperature is required, a low-temperature refrigerant should be used.
  • the condensation temperature of the low-temperature refrigerant is required to be lower, and the refrigerant cannot be condensed into liquid by ordinary water cooling and air cooling.
  • a kind of artificial cold source is required to condense the low-temperature refrigerant, accordingly, a cascaded refrigeration cycle adopting two kinds of refrigerants occurs.
  • multiple compressors are employed to realize the cascaded refrigeration cycle in the existing technology, which causes a problem of an increase of the cost of implementing a cascade refrigeration cycle in the existing technology.
  • the main objective of the present disclosure is to provide an air-conditioning system and an air conditioner having the same, so as to solve a problem of a high cost of manufacturing the air-conditioning system in the prior art.
  • an air-conditioning system including a compressor; a first pipeline, a second pipeline, an evaporative condenser, a first liquid separator, and a second liquid separator;
  • the first pipeline is in communication with the compressor;
  • the second pipeline is in communication with multiple compressors, and the first pipeline and the second pipeline are arranged independently;
  • the evaporative condenser is provided in the first pipeline and the second pipeline, and refrigerant in the first pipeline and refrigerant in the second pipeline perform heat exchange with the evaporative condenser respectively;
  • the first liquid separator is arranged in the first pipeline, and an outlet of the first liquid separator is in communication with the compressor;
  • the second liquid separator is arranged in the second pipeline, and an outlet of the second liquid separator is in communication with the compressor; and the first liquid separator is disposed adjacent to the second liquid separator.
  • the compressor includes multiple cylinders, and the multiple cylinders are configured to work independently.
  • the multiple cylinders include a first cylinder; the outlet of the first liquid separator is in communication with a suction port of the first cylinder; a first end of the first pipeline is in communication with a discharge port of the first cylinder; and a second end of the first pipeline is in communication with an inlet of the first liquid separator.
  • the air-conditioning system further includes a condenser; the condenser is arranged in the first pipeline; an inlet of the condenser is in communication with the discharge port of the first cylinder; an outlet of the condenser is in communication with a first inlet of the evaporative condenser; and a first outlet of the evaporative condenser is in communication with the inlet of the first liquid separator.
  • the air-conditioning system further includes a first throttle valve; the first throttle valve is arranged in the first pipeline and located between the evaporative condenser and the condenser.
  • the multiple cylinders further include a second cylinder; the outlet of the second liquid separator is in communication with a suction port of the second cylinder; a first end of the second pipeline is in communication with a discharge port of the second cylinder; and a second end of the second pipeline is in communication with an inlet of the second liquid separator.
  • the air-conditioning system further includes an evaporator; the evaporator is arranged in the second pipeline; an inlet of the evaporator is in communication with a second outlet of the evaporative condenser; and an outlet of the evaporator is in communication with the inlet of the second liquid separator.
  • the air-conditioning system further includes a second throttle valve; the second throttle valve is arranged in the second pipeline and is located between the evaporative condenser and the evaporator.
  • a volume ratio of the second cylinder to the first cylinder is T1, wherein 0.15 ⁇ T1 ⁇ 0.4.
  • a diameter ratio of the suction port of the second cylinder and the suction port of the first cylinder is T2, wherein 0.7 ⁇ T2 ⁇ 0.9.
  • a height ratio of the second cylinder to the first cylinder is T3, wherein 0.75 ⁇ T3 ⁇ 0.95.
  • an effective volume ratio of the first liquid separator to the second liquid separator is T4, wherein 2.5 ⁇ T4 ⁇ 6.
  • the present disclosure provides an air conditioner including the air-conditioning system above.
  • the first pipeline and the second pipeline are provided independently; the first pipeline and the second pipeline are respectively in communication with the same one compressor; and a first liquid separator and a second liquid separator are arranged in the first pipeline respectively.
  • the air-conditioning system can realize a cascade refrigeration cycle. Since only one compressor is employed in the system, the cost of manufacturing the air-conditioning system is effectively saved.
  • spatially relative terms such as “above”, “over”, “on a surface of', “upper”, etc., may be used herein to describe the spatial position relationships between one device or feature and other devices or features as shown in the drawings. It should be appreciated that the spatially relative term is intended to include different directions during using or operating the device other than the directions described in the drawings. For example, if the device in the drawings is inverted, the device is described as the device “above other devices or structures” or “on other devices or structures” will be positioned “below other devices or structures” or “under other devices or structures”. Thus, the exemplary term “above” can include both “above” and "under”. The device can also be positioned in other different ways (rotating 90 degrees or at other orientations), and the corresponding description of the space used herein is interpreted accordingly.
  • an air-conditioning system is provided.
  • the air-conditioning system includes a compressor 10, a first pipeline 20, a second pipeline 30, an evaporative condenser 40, a first liquid separator 51 and a second liquid separator 52.
  • the first pipeline 20 is in communication with the compressor 10, and the second pipeline 30 is in communication with multiple compressors 10.
  • the first pipeline 20 and the second pipeline 30 are arranged independently, and the evaporative condenser 40 is provided in the first pipeline 20 and the second pipeline 30.
  • the refrigerant in the first pipeline 20 and the refrigerant in the second pipeline 30 can perform heat exchange with the evaporative condenser 40 respectively.
  • the first liquid separator 51 is arranged in the first pipeline 20, and an outlet of the first liquid separator 51 is in communication with the compressor 10.
  • the second liquid separator 52 is arranged in the second pipeline 30, and an outlet of the second liquid separator 52 is in communication with the compressor 10.
  • the first liquid separator 51 is disposed adjacent to the second liquid separator 52.
  • the first pipeline and the second pipeline are provided independently; the first pipeline and the second pipeline are respectively in communication with the same one compressor; and the first liquid separator and the second liquid separator are arranged in the first pipeline respectively.
  • the air-conditioning system can realize a cascade refrigeration cycle. Since only one compressor is employed in the system, the cost of manufacturing the air-conditioning system is effectively saved.
  • the compressor 10 includes multiple cylinders, and the multiple cylinders work independently. Such an arrangement enables the air-conditioning system to be adaptive for compressing different refrigerants, thereby improving practicability and reliability of the compressor.
  • the multiple cylinders include a first cylinder 11.
  • An outlet of the first liquid separator 51 is in communication with a suction port of the first cylinder 11.
  • the first end of the first pipeline 20 is in communication with the discharge port of the first cylinder 11, and the second end of the first pipeline 20 is in communication with the inlet of the first liquid separator 51.
  • the air-conditioning system further includes a condenser 61 and a first throttle valve 62.
  • the condenser 61 is arranged in the first pipeline 20.
  • the inlet of the condenser 61 is in communication with the discharge port of the first cylinder 11.
  • the outlet of the condenser 61 is in communication with the first inlet of the evaporative condenser 40, and the first outlet of the evaporative condenser 40 is in communication with the inlet of the first liquid separator 51.
  • the first throttle valve 62 is arranged in the first pipeline 20 and located between the evaporative condenser 40 and the condenser 61. Such an arrangement can effectively improve the reliability of the air-conditioning system.
  • the multiple cylinders further include a second cylinder 12.
  • the outlet of the second liquid separator 52 is in communication with the suction port of the second cylinder 12, the first end of the second pipeline 30 is in communication with the discharge port of the second cylinder 12; and the second end of the second pipeline 30 is in communication with the inlet of the second liquid separator 52.
  • the air-conditioning system further includes an evaporator 63 and a second throttle valve 64.
  • the evaporator 63 is arranged in the second pipeline 30.
  • the inlet of the evaporator 63 is in communication with the second outlet of the evaporative condenser 40.
  • the outlet of the evaporator 63 is in communication with the inlet of the second liquid separator 52.
  • the second throttle valve 64 is arranged in the second pipeline 30 and is located between the evaporative condenser 40 and the evaporator 63.
  • the volume ratio of the second cylinder 12 to the first cylinder 11 is T1, where 0.15 ⁇ T1 ⁇ 0.4.
  • the diameter ratio of the suction port of the second cylinder 12 and the suction port of the first cylinder 11 is T2, where 0.7 ⁇ T2 ⁇ 0.9.
  • the height ratio of the second cylinder 12 to the first cylinder 11 is T3, where 0.75 ⁇ T3 ⁇ 0.95.
  • the effective volume ratio of the first liquid separator 51 to the second liquid separator 52 is T4, where 2.5 ⁇ T4 ⁇ 6. Such an arrangement can effectively improve the performance the air-conditioning system.
  • the air-conditioning system of the above embodiment can also be applied in the field of air conditioner technology, that is, an air conditioner is provided.
  • the air conditioner includes an air-conditioning system, and the air-conditioning system is one of the air-conditioning systems disclosed in the foregoing embodiments.
  • the air-conditioning system includes a compressor 10, a first pipeline 20, a second pipeline 30, an evaporative condenser 40, a first liquid separator 51 and a second liquid separator 52.
  • the first pipeline 20 is in communication with compressor 10
  • the second pipeline 30 is in communication with multiple compressors 10.
  • the first pipeline 20 and the second pipeline 30 are arranged independently, and the evaporative condenser 40 is provided in the first pipeline 20 and in the second pipeline 30.
  • the refrigerant in the first pipeline 20 and the refrigerant in the second pipeline 30 can perform heat exchange with the evaporative condenser 40 respectively.
  • the first liquid separator 51 is arranged in the first pipeline 20, and the outlet of the first liquid separator 51 is in communication with the compressor 10.
  • the second liquid separator 52 is disposed in the second pipeline 30, and the outlet of the second liquid separator 52 is in communication with the compressor 10.
  • the first liquid separator 51 is disposed adjacent to the second liquid separator 52.
  • the first pipeline and the second pipeline are provided independently; the first pipeline and the second pipeline are respectively in communication with the same one compressor; and the first liquid separator and the second liquid separator are arranged in the first pipeline respectively.
  • the air-conditioning system can realize a cascade refrigeration cycle. Since only one compressor is employed in the system, the cost of manufacturing the air-conditioning system is effectively saved.
  • the cascaded refrigeration cycle generally includes two or three independent refrigeration circulations, which are referred to as a high temperature portion and a low temperature portion respectively.
  • Each of these independent refrigeration circulations is a complete single-stage or two-stage compression refrigeration system, and the two portions are related by the same one evaporative condenser.
  • the independent systems of the two portions respectively use two compressors, which results in a complicated structure of the whole system.
  • a compressor with one unit and double refrigerants is provided.
  • the upper cylinder and the lower cylinder of the compressor can participate in two refrigeration circulations respectively, and function as two compressors.
  • the second cylinder is disposed above the first cylinder.
  • the upper first cylinders of the twin cylinder compressor independently complete the compression processes of the two refrigeration circulations respectively, and the compressor with one unit and double refrigerants simplifies the cascaded circulation system.
  • the two cylinders need to be connected to the liquid separator component separately.
  • the first cylinder is a high-temperature refrigerant cylinder. After flowing through the first liquid separator and entering the first cylinder, the high-temperature refrigerant is compressed, and then discharged into an intermediate cavity of the upper flange, and finally discharged out of the high-temperature refrigerant discharge pipe 2.
  • the second cylinder is a low-temperature refrigerant cylinder.
  • the low-temperature refrigerant After flowing through the first liquid separator and entering the second cylinder, the low-temperature refrigerant is compressed, and then discharged into the housing of the compressor directly through the lower flange, and finally discharged out of the low-temperature refrigerant discharge pipe 1.
  • the discharge temperature of the low-temperature refrigerant is lower, which takes an effect on lowering the temperature of the motor.
  • the volume ratio of the second cylinder to the first cylinder ranges from 0.15 to 0.4.
  • the high ratio of the second cylinder to the first cylinder ranges from 0.75 to 0.95. It can be further determined that the diameter ratio of the suction port of the second cylinder to the suction port of the first cylinder ranges from 0.7 to 0.9. Such an arrangement can further improve the reliability of the sealing inside the pump body.
  • the evaporative condenser When operating in the system with double refrigerants, the evaporative condenser acts as an evaporator of the high-temperature refrigerant; after flowing through the first liquid separator and entering the high-temperature refrigerant cylinder, the high-temperature refrigerant at a low-temperature and low-pressure state is compressed and discharged into the inner cavity of the lower flange, then is discharged from the high-temperature discharge pipe into the condenser and then the throttle valve, and finally flows back to the evaporative condenser, thereby completing a circulation cycle of the high-temperature refrigerant. After the high-temperature refrigerant circulates for a period of time, the low-temperature refrigerant begins to circulate.
  • the refrigerant After the low-temperature refrigerant from the evaporator flows through the second liquid separator and enters the low-temperature refrigerant cylinder, the refrigerant is compressed and discharged from the discharge port of the upper flange into the inner cavity of the compressor.
  • the effective volume ratio of the first liquid separator to the second liquid separator ranges from 2.5 to 6.0.
  • the discharge temperature of the low-temperature refrigerant is lower, which takes an effect on lowering the temperature of the compressor motor.
  • the low-temperature refrigerant flows through the low-temperature refrigerant discharge pipe and enters the evaporative condenser, then enter the throttle valve, and finally flows back to the evaporator, thereby completing a circulation cycle of the low-temperature refrigerant.
  • a second liquid separator is provided independently at the suction inlet of the low-temperature refrigerant cylinder.
  • the inner cavity of the lower flange is used as a high-temperature refrigerant discharge cavity.
  • a high-temperature refrigerant discharge port is independently disposed in the lower flange and is in communication with the high-temperature refrigerant discharge pipe. The sealing distances between the parts inside the pump body are ensured to be sufficient, and the first cylinder and the second cylinder can be independently compressed.
  • FIG.3 is a top view of the compressor with one unit and double refrigerants. As far as the appearance is concerned, the compressor is provided with two liquid separators with different specifications corresponding to the high-temperature refrigerant discharge pipe and the low-temperature refrigerant discharge pipe. The low-temperature refrigerant is discharged into the housing of the compressor first, which takes an effect on lowering the temperature of the compressor motor.
  • FIG.1 is a principle diagram of the system using the compressor with one unit and double refrigerants.
  • two independent refrigeration circulations are related through the evaporative condenser, and also through the compressor with double refrigerants; the evaporative condenser acts as an evaporator of the high-temperature refrigerant; after flowing through the first liquid separator and entering the high-temperature refrigerant cylinder, the high-temperature refrigerant at the low-temperature and low-pressure state is compressed and discharged into the inner cavity of the lower flange, then is discharged from the high-temperature discharge pipe into the condenser and the throttle valve, and finally flows back to the evaporative condenser, thereby completing a circulation cycle of the high-temperature refrigerant.
  • the low-temperature refrigerant After the high-temperature refrigerant circulates for a period of time, the low-temperature refrigerant begins to circulate. After the low-temperature refrigerant from the evaporator flows through the second liquid separator and enters the low-temperature refrigerant cylinder, the refrigerant is compressed, and discharged from the discharge port of the upper flange into the inner cavity of the compressor. The discharge temperature of the low-temperature refrigerant is lower, which takes an effect on lowering the temperature of the compressor motor.
  • the low-temperature refrigerant flows through the low-temperature refrigerant discharge pipe, and enters the evaporative condenser and the throttle valve, and finally flows back to the evaporator, thereby completing a circulation cycle of the low-temperature refrigerant.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP18892332.0A 2017-12-19 2018-05-30 Système de climatisation et climatiseur doté dudit système Pending EP3640549A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711399605.2A CN108119955B (zh) 2017-12-19 2017-12-19 空调器系统及具有其的空调器
PCT/CN2018/089015 WO2019119733A1 (fr) 2017-12-19 2018-05-30 Système de climatisation et climatiseur doté dudit système

Publications (2)

Publication Number Publication Date
EP3640549A1 true EP3640549A1 (fr) 2020-04-22
EP3640549A4 EP3640549A4 (fr) 2020-08-05

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EP18892332.0A Pending EP3640549A4 (fr) 2017-12-19 2018-05-30 Système de climatisation et climatiseur doté dudit système

Country Status (4)

Country Link
US (1) US20210041151A1 (fr)
EP (1) EP3640549A4 (fr)
CN (1) CN108119955B (fr)
WO (1) WO2019119733A1 (fr)

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CN207635458U (zh) * 2017-12-19 2018-07-20 珠海格力节能环保制冷技术研究中心有限公司 空调器系统及具有其的空调器

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CN108119955A (zh) 2018-06-05
WO2019119733A1 (fr) 2019-06-27

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