CN101865555B - Multi-split air-conditioner capable of simultaneously refrigerating and heating - Google Patents

Multi-split air-conditioner capable of simultaneously refrigerating and heating Download PDF

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Publication number
CN101865555B
CN101865555B CN 201010214957 CN201010214957A CN101865555B CN 101865555 B CN101865555 B CN 101865555B CN 201010214957 CN201010214957 CN 201010214957 CN 201010214957 A CN201010214957 A CN 201010214957A CN 101865555 B CN101865555 B CN 101865555B
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CN
China
Prior art keywords
valve
indoor heat
heat exchanger
magnetic valve
exchange
Prior art date
Application number
CN 201010214957
Other languages
Chinese (zh)
Other versions
CN101865555A (en
Inventor
金听祥
李改莲
郑祖义
Original Assignee
广东志高空调有限公司
郑州轻工业学院
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 广东志高空调有限公司, 郑州轻工业学院 filed Critical 广东志高空调有限公司
Priority to CN 201010214957 priority Critical patent/CN101865555B/en
Publication of CN101865555A publication Critical patent/CN101865555A/en
Application granted granted Critical
Publication of CN101865555B publication Critical patent/CN101865555B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/54Heating and cooling, simultaneously or alternatively
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plant, or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0231Compression machines, plant, or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating

Abstract

The invention discloses a multi-split air-conditioner capable of simultaneously refrigerating and heating. A compressor, an oil-gas separator, a four-way valve, an indoor heat exchange system, an outdoor heat exchanger, a four-way valve and a gas-liquid separator are connected in turn along the refrigerant flowing direction to form a heating circuit; the compressor, the oil-gas separator, the four-way valve, the outdoor heat exchanger, an indoor heat exchange system and a gas-liquid separator are connected in turn along the refrigerant flowing direction to form a heating circuit; a pipeline between the outdoor heat exchanger and the indoor heat exchange system is provided with a parallel pipeline which is connected in parallel between a second electronic expansion valve and a second one-way valve; the parallel pipeline is provided with a third control valve and a third one-way valve; and one end of the parallel pipeline is connected with a pipeline between the four-way valve and the outdoor heat exchanger, while the other end is connected with a pipeline between the first one-way valve and the indoor heat exchange system. The multi-split air-conditioner has five modes of independent refrigerating, independent heating, main refrigerating, main heating and simultaneous refrigerating and heating.

Description

A kind of freeze simultaneously and heat one drag many air-conditionings
Technical field
The present invention relates to the air-conditioning equipment field, specifically be meant a kind of freeze simultaneously and heat one drag many air-conditionings.
Background technology
Air-conditioning is air regulator (air conditioner), and hanging air-conditioning is a kind of being used for the unit of handling air to area of space (being generally airtight) to be provided.Its function is that the parameters such as temperature, humidity, cleanliness factor and air velocity of the interior air in this room (or enclosure space, zone) are regulated, to satisfy the requirement of human comfort or technical process.Its operation principle is: compressor is the liquid refrigerant of the cold-producing medium boil down to HTHP of gaseous state, delivers to the liquid refrigerant that becomes normal temperature high voltage after condenser (off-premises station) heat radiation then, is hot blast so off-premises station produces by boasting; Parts that are cross valve are arranged when heating, make cold-producing medium opposite during with refrigeration at the flow direction of condenser and evaporimeter, so outdoor when heating what blow is cold wind, what indoor set blew is hot blast.
One drags many air-conditionings to be meant the air-conditioning of the public off-premises station of a plurality of indoor sets.At present, traditional one drags cooling or the heat supply separately at one time of many air-conditionings, still, in some special office or hotel, also needs air conditioner refrigerating winter, therefore needs exploitation one to drag many air-conditionings what different Administrative Areas can freeze simultaneously and heat.
Summary of the invention
To above-mentioned defective, the technical problem that the present invention solves is, provide a kind of freeze simultaneously and heat one drag many air-conditionings, can realize separate refrigeration, heat separately, freeze be main, heat be main, freeze and heat five kinds of patterns such as take into account simultaneously.
In order to solve above technical problem, provided by the invention freeze simultaneously and heat one drag many air-conditionings, comprise compressor, gs-oil separator, cross valve, outdoor heat exchanger, the indoor heat exchange mechanisms more than at least two, gas-liquid separator, wherein:
Said gs-oil separator and said compressor are connected with return line;
Said indoor heat exchange mechanisms comprises the indoor heat exchanger and first electric expansion valve, said indoor heat exchanger and the series connection of first electric expansion valve;
Compose in parallel indoor heat-exchange system between the said indoor heat exchange mechanisms;
Said compressor, gs-oil separator, cross valve, indoor heat-exchange system, outdoor heat exchanger, cross valve, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between said cross valve and the said indoor heat exchanger is respectively arranged with first control valve;
Said compressor, gs-oil separator, cross valve, outdoor heat exchanger, indoor heat-exchange system, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between said gas-liquid separator and the said indoor heat exchanger is respectively arranged with second control valve;
The connecting line of said cross valve and said indoor heat-exchange system is provided with first check valve;
Pipeline between said outdoor heat exchanger and the said indoor heat-exchange system is provided with parallel pipeline, said parallel pipeline be second electric expansion valve with second check valve between parallelly connected;
In addition; Also comprise series pipe; Said series pipe is provided with the 3rd control valve and the 3rd check valve; Said series pipe one end and said cross valve are connected the pipeline between the said series pipe other end and said first check valve and the said indoor heat-exchange system with pipeline between the said outdoor heat exchanger.
Preferably, said first control valve, second control valve, the 3rd control valve are magnetic valve.
Preferably, said compressor is a frequency-changeable compressor.
Compared with prior art, provided by the invention freeze simultaneously and heat one drag many air-conditionings, can realize separate refrigeration, heat separately, freeze be main, heat be main, freeze and heat five kinds of patterns such as take into account simultaneously.
Description of drawings
Fig. 1 for freeze simultaneously in one embodiment of the present invention and heat one drag many air-conditionings structural representation.
The specific embodiment
For those skilled in the art can understand technical scheme provided by the present invention better, set forth below in conjunction with specific embodiment.
Provided by the invention freeze simultaneously and heat one drag many air-conditionings, comprise frequency-changeable compressor, gs-oil separator, cross valve, outdoor heat exchanger, four indoor heat exchange mechanisms, gas-liquid separator, wherein:
Gs-oil separator and frequency-changeable compressor are connected with return line;
Indoor heat exchange mechanisms comprises the indoor heat exchanger and first electric expansion valve, indoor heat exchanger and the series connection of first electric expansion valve;
Compose in parallel indoor heat-exchange system between the indoor heat exchange mechanisms;
Frequency-changeable compressor, gs-oil separator, cross valve, indoor heat-exchange system, outdoor heat exchanger, cross valve, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between cross valve and the indoor heat exchanger is respectively arranged with first magnetic valve;
Frequency-changeable compressor, gs-oil separator, cross valve, outdoor heat exchanger, indoor heat-exchange system, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between gas-liquid separator and the indoor heat exchanger is respectively arranged with second magnetic valve;
The connecting line of cross valve and indoor heat-exchange system is provided with first check valve;
Pipeline between outdoor heat exchanger and the indoor heat-exchange system is provided with parallel pipeline, parallel pipeline be second electric expansion valve with second check valve between parallelly connected;
In addition; Also comprise series pipe; Series pipe is provided with the 3rd magnetic valve and the 3rd check valve, and series pipe one end and cross valve are connected the pipeline between the series pipe other end and first check valve and the indoor heat-exchange system with pipeline between the outdoor heat exchanger.
See also Fig. 1, this figure be freeze simultaneously in one embodiment of the present invention and heat one drag many air-conditionings structural representation.
Present embodiment is that example is explained with four indoor heat exchange mechanisms.
Provided by the invention freeze simultaneously and heat one drag many air-conditionings can realize separate refrigeration, heat separately, freeze to be main, heat be main, freeze and heat five kinds of patterns such as take into account simultaneously, specifically work operation logic and process are following:
Separate refrigeration pattern: during separate refrigeration; The 3rd magnetic valve 5, first magnetic valve 10, first magnetic valve 14, first magnetic valve 18 and first magnetic valve 24 are closed, and second magnetic valve 11, second magnetic valve 15, second magnetic valve 19 and second magnetic valve 25 are opened, and frequency-changeable compressor 1 compresses cold-producing medium; The refrigerant gas of HTHP enters into gs-oil separator 2; Through four-way change-over valve 3, refrigerant gas enters into outdoor heat exchanger 7, through second check valve 9 and first electric expansion valve 13, first electric expansion valve 17, first electric expansion valve 20 and first electric expansion valve 23; After the throttling step-down; Low pressure refrigerant liquid enters into indoor heat exchanger 12, indoor heat exchanger 16, indoor heat exchanger 21 and indoor heat exchanger 22 respectively, after the evaporation heat absorption, through second magnetic valve 11, second magnetic valve 15, second magnetic valve 19 and second magnetic valve 25; Enter into gas-liquid separator 26, get back to frequency-changeable compressor 1.
Refrigeration is for holotype: when refrigeration is main, with the indoor heat exchanger quantity of refrigeration mode operation more than indoor heat exchanger quantity with the heating mode operation.(certain closes second magnetic valve 11 if in second magnetic valve 11, second magnetic valve 15, second magnetic valve 19, second magnetic valve 25; Then corresponding certain should be opened in first magnetic valve 10, first magnetic valve 14, first magnetic valve 18, first magnetic valve 24), first magnetic valve 14, first magnetic valve 18 and first magnetic valve 24 close, the 3rd magnetic valve 5, first magnetic valve 10, second magnetic valve 15, second magnetic valve 19 and second magnetic valve 25 are opened, frequency-changeable compressor 1 compresses cold-producing medium; The refrigerant gas of HTHP enters into gs-oil separator 2; Through four-way change-over valve 3, a part of high-temperature high-pressure refrigerant gas is through the 3rd magnetic valve 5, the 3rd check valve 6 and first magnetic valve 10, through indoor heat exchanger 12 to indoor heat radiation; Reach and heat purpose; Electronics first expansion valve 13 of refrigerant liquid after the cooling through standard-sized sheet is after converging with the refrigerant liquid of another part high-temperature high-pressure refrigerant gas after through outdoor heat exchanger 7 coolings, through electronics first expansion valve 17, first expansion valve 20, first expansion valve 23; After the throttling step-down; Low pressure refrigerant liquid enters into indoor heat exchanger 16, indoor heat exchanger 21, indoor heat exchanger 22 respectively, after the evaporation heat absorption, through second magnetic valve 15, second magnetic valve 19, second magnetic valve 25; Enter into gas-liquid separator 26, get back to frequency-changeable compressor 1.
Independent heating mode: when heating separately; First magnetic valve 10, first magnetic valve 14, first magnetic valve 18 and first magnetic valve 24 are opened; The 3rd magnetic valve 5, second magnetic valve 11, second magnetic valve 15, second magnetic valve 19 and second magnetic valve 25 are closed; Frequency-changeable compressor 1 is with the cold-producing medium compression, and the refrigerant gas of HTHP enters into gs-oil separator 2, through the four-way change-over valve 3 and first check valve 4; High-temperature high-pressure refrigerant gas is through first magnetic valve 10, first magnetic valve 14, first magnetic valve 18 and first magnetic valve 24; Get into indoor heat exchanger 12, indoor heat exchanger 16, indoor heat exchanger 21 and indoor heat exchanger 22 respectively,, reach and heat purpose to indoor heat radiation.Refrigerant liquid after the cooling; Through first electric expansion valve 13, first electric expansion valve 17, first electric expansion valve 20, first electric expansion valve 23 and second electric expansion valve 8; After the throttling step-down, low pressure refrigerant liquid enters into outdoor heat exchanger 7, after the evaporation heat absorption; Through four-way change-over valve 3 and gas-liquid separator 26, get back to frequency-changeable compressor 1.
Heat and be holotype: heat when being main, with the indoor heat exchanger quantity of heating mode operation more than indoor heat exchanger quantity with the refrigeration mode operation.(certain opens second magnetic valve 11 if in second magnetic valve 11, second magnetic valve 15, second magnetic valve 19, second magnetic valve 25; Then corresponding certain should be closed in first magnetic valve 10, first magnetic valve 14, first magnetic valve 18, first magnetic valve 24), first magnetic valve 14, first magnetic valve 18 and first magnetic valve 24 open; The 3rd magnetic valve 5, first magnetic valve 10, second magnetic valve 15, second magnetic valve 19 and second magnetic valve 25 are closed; Frequency-changeable compressor 1 compresses cold-producing medium; The refrigerant gas of HTHP enters into gs-oil separator 2; Through the four-way change-over valve 3 and first check valve 4, high-temperature high-pressure refrigerant gas gets into indoor heat exchanger 16, indoor heat exchanger 21, indoor heat exchanger 22 respectively through second magnetic valve 14, second magnetic valve 18, second magnetic valve 24; To indoor heat radiation, reach and heat purpose.Refrigerant liquid after the cooling, through first electric expansion valve 17, first electric expansion valve 20, first electric expansion valve 23, part of refrigerant liquid enters into indoor heat exchanger 12; After the evaporation heat absorption; Through second magnetic valve 11, enter into gas-liquid separator 26, get back to frequency-changeable compressor 1.Another part more than refrigerant liquid through second electric expansion valve 8, enter into outdoor heat exchanger 7, after the evaporation heat absorption,, get back to frequency-changeable compressor 1 through four-way change-over valve 3 and gas-liquid separator 26.
Refrigeration and heat the pattern of taking into account simultaneously: freeze and heat when taking into account simultaneously, equal indoor heat exchanger quantity with the refrigeration mode operation with the indoor heat exchanger quantity of heating mode operation.Second magnetic valve 11 and second magnetic valve 15 (if in second magnetic valve 11, second magnetic valve 15, second magnetic valve 19, second magnetic valve 25 certain two open; Then in first magnetic valve 10, first magnetic valve 14, first magnetic valve 18, first magnetic valve 24 corresponding certain two should close), first magnetic valve 18 and first magnetic valve 24 open; The 3rd magnetic valve 5, first magnetic valve 10, first magnetic valve 14, second magnetic valve 19 and second magnetic valve 25 are closed; Frequency-changeable compressor 1 is with the cold-producing medium compression, and the refrigerant gas of HTHP enters into gs-oil separator 2, through four-way change-over valve 3 and check valve 4; High-temperature high-pressure refrigerant gas is through second magnetic valve 18, second magnetic valve 24; Get into indoor heat exchanger 21, indoor heat exchanger 22 respectively,, reach and heat purpose to indoor heat radiation.Refrigerant liquid after the cooling through first electric expansion valve 20, first electric expansion valve 23, enters into indoor heat exchanger 12, indoor heat exchanger 16 respectively; After the evaporation heat absorption; Through second magnetic valve 11, second magnetic valve 15, enter into gas-liquid separator 26, get back to frequency-changeable compressor 1.
Compared with prior art, provided by the invention freeze simultaneously and heat one drag many air-conditionings, can realize separate refrigeration, heat separately, freeze be main, heat be main, freeze and heat five kinds of patterns such as take into account simultaneously.
Certainly, more than only be preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (2)

  1. One kind freeze simultaneously and heat one drag many air-conditionings, it is characterized in that, comprise compressor, gs-oil separator, cross valve, outdoor heat exchanger, the indoor heat exchange mechanisms more than at least two, gas-liquid separator, wherein:
    Said gs-oil separator and said compressor are connected with return line;
    Said indoor heat exchange mechanisms comprises the indoor heat exchanger and first electric expansion valve, said indoor heat exchanger and the series connection of first electric expansion valve;
    Compose in parallel indoor heat-exchange system between the said indoor heat exchange mechanisms;
    Said compressor, gs-oil separator, cross valve, indoor heat-exchange system, outdoor heat exchanger, cross valve, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between said cross valve and the said indoor heat exchanger is respectively arranged with first control valve;
    Said compressor, gs-oil separator, cross valve, outdoor heat exchanger, indoor heat-exchange system, gas-liquid separator are along the cold-producing medium circulating direction composition heating loop that is linked in sequence, and the connecting line between said gas-liquid separator and the said indoor heat exchanger is respectively arranged with second control valve;
    The connecting line of said cross valve and said indoor heat-exchange system is provided with first check valve;
    Pipeline between said outdoor heat exchanger and the said indoor heat-exchange system is provided with parallel pipeline, said parallel pipeline be second electric expansion valve with second check valve between parallelly connected;
    In addition; Also comprise series pipe; Said series pipe is provided with the 3rd control valve and the 3rd check valve; Said series pipe one end and said cross valve are connected the pipeline between the said series pipe other end and said first check valve and the said indoor heat-exchange system with pipeline between the said outdoor heat exchanger;
    Said first control valve, second control valve, the 3rd control valve are magnetic valve.
  2. 2. according to claim 1 freeze simultaneously and heat one drag many air-conditionings, it is characterized in that said compressor is a frequency-changeable compressor.
CN 201010214957 2010-06-29 2010-06-29 Multi-split air-conditioner capable of simultaneously refrigerating and heating CN101865555B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010214957 CN101865555B (en) 2010-06-29 2010-06-29 Multi-split air-conditioner capable of simultaneously refrigerating and heating

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 201010214957 CN101865555B (en) 2010-06-29 2010-06-29 Multi-split air-conditioner capable of simultaneously refrigerating and heating
US13/807,429 US20130213077A1 (en) 2010-06-29 2011-03-10 Multi-split air conditioner capable of refrigerating and heating simultaneously
EP11800068.6A EP2589889A4 (en) 2010-06-29 2011-03-10 Multi-split air conditioner capable of refrigerating and heating simultaneously
PCT/CN2011/071673 WO2012000323A1 (en) 2010-06-29 2011-03-10 Multi-split air conditioner capable of refrigerating and heating simultaneously

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CN101865555A CN101865555A (en) 2010-10-20
CN101865555B true CN101865555B (en) 2012-10-03

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US (1) US20130213077A1 (en)
EP (1) EP2589889A4 (en)
CN (1) CN101865555B (en)
WO (1) WO2012000323A1 (en)

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CN101865555B (en) * 2010-06-29 2012-10-03 广东志高空调有限公司 Multi-split air-conditioner capable of simultaneously refrigerating and heating
CN202101340U (en) * 2011-05-24 2012-01-04 宁波奥克斯电气有限公司 Heat pump screw-type compression multi-connection central air conditioner device
CN102538077A (en) * 2012-02-19 2012-07-04 周玉涛 Multi-split air conditioner system without liquid storage devices and control mode of multi-split air conditioner system
CN102692054B (en) * 2012-04-26 2014-09-24 江苏辛普森新能源有限公司 Cooling and heating special unit of heat source tower
CN102589048A (en) * 2012-05-01 2012-07-18 周玉涛 Water-cooling multi-connected unit and working manner thereof
CN103148564B (en) * 2013-03-26 2015-07-29 青岛海尔空调电子有限公司 Realize communication means and the device of changes in temperature multi-gang air-conditioner generator set controller simultaneously
CN104633771B (en) * 2013-11-13 2018-07-03 珠海格力电器股份有限公司 VRF Air Conditioning System and its control method
CN103759455B (en) * 2014-01-27 2015-08-19 青岛海信日立空调系统有限公司 Reclamation frequency conversion thermal multiple heat pump and control method thereof
CN104748261B (en) * 2015-03-31 2019-12-03 广东美的暖通设备有限公司 Multi-line system
CN104879966A (en) * 2015-04-29 2015-09-02 广东美的制冷设备有限公司 Frequency-variable air conditioner and control method thereof
CN104833010B (en) * 2015-05-25 2017-06-06 广东美的暖通设备有限公司 The outdoor unit and heat-reclamation multi-compressors of heat-reclamation multi-compressors
CN110848850A (en) * 2019-11-28 2020-02-28 广东美的暖通设备有限公司 Air conditioner, control method of air conditioner, and storage medium
CN111706941A (en) * 2020-05-29 2020-09-25 苏州浪潮智能科技有限公司 Combined type data center cooling and heating system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107477902A (en) * 2017-08-02 2017-12-15 中国人民解放军理工大学 Sequential independent cooling heats formula multi-connected machine
CN107477902B (en) * 2017-08-02 2020-07-10 江苏戎装科技有限公司 Sequential independent refrigerating and heating multi-split air conditioner

Also Published As

Publication number Publication date
EP2589889A1 (en) 2013-05-08
WO2012000323A1 (en) 2012-01-05
CN101865555A (en) 2010-10-20
EP2589889A4 (en) 2014-04-23
US20130213077A1 (en) 2013-08-22

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