EP1655555A2 - Klimaanlage - Google Patents

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Publication number
EP1655555A2
EP1655555A2 EP05256788A EP05256788A EP1655555A2 EP 1655555 A2 EP1655555 A2 EP 1655555A2 EP 05256788 A EP05256788 A EP 05256788A EP 05256788 A EP05256788 A EP 05256788A EP 1655555 A2 EP1655555 A2 EP 1655555A2
Authority
EP
European Patent Office
Prior art keywords
fluid path
air conditioner
closing valve
path opening
outdoor
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.)
Withdrawn
Application number
EP05256788A
Other languages
English (en)
French (fr)
Other versions
EP1655555A3 (de
Inventor
Bong-Soo Gwanak Dreamtown 115-1804 Park
Sai-Kee Hyangchon Lotte Apt. 308-706 Oh
Chi-Woo Song
Ju-Won Kim
Baik-Young Chojeongmaeul Chung
Se-Dong Jugong Apt. 516-702 Chang
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1655555A2 publication Critical patent/EP1655555A2/de
Publication of EP1655555A3 publication Critical patent/EP1655555A3/de
Withdrawn legal-status Critical Current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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/027—Condenser control 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
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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
    • F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • F25B2313/02531—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during cooling
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • F25B2313/02533—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during heating
    • 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors

Definitions

  • the present invention relates to an air conditioner. It more particularly relates to an air conditioner capable of appropriately maintaining a high pressure of a cycle during small-load operation.
  • Air conditioners adjust temperature, humidity, air current and cleanliness of air in order to create a pleasant indoor environment.
  • air conditioners can be classified as integral type air conditioners in which an indoor unit and an outdoor unit are received inside one single case, and separated type air conditioners in which a compressor and a condenser as an indoor unit are separated from an evaporator as an outdoor unit.
  • An air conditioner for both heating and cooling which is part of the air conditioner, is provided with a fluid path switch valve and switches a fluid path of a refrigerant to thereby selectively perform its cooling or heating function.
  • a fluid path switch valve and switches a fluid path of a refrigerant to thereby selectively perform its cooling or heating function.
  • a plurality of outdoor units having a plurality of compressors and a plurality of outdoor heat exchangers are connected to each other in parallel.
  • FIG. 1 is a schematic view of a conventional multi-type air conditioner.
  • a conventional multi-type air conditioner includes: a plurality of indoor units 10 having indoor heat exchangers 11 and indoor expansion devices 13, and a plurality of outdoor units 20 having outdoor heat exchangers 41 and compressors 23.
  • the outdoor units 20 supply the compressed refrigerant to each of the indoor units 10 via a pipe 30, and cool spaces where the indoor units 10 are installed.
  • the multi-air conditioner performs condensation by using the outdoor heat exchangers 41 of all the outdoor units 20, even when some indoor units 10 perform cooling operations.
  • a condenser which is large in comparison to the area and air flow of the heat exchangers corresponding to the indoor unit 10 load is used. Accordingly, a phenomenon that the system high pressure decreases occurs.
  • the refrigerant cannot be smoothly supplied to the indoor units 10 and the pipe of the indoor units 10 can become frozen. Thus, cooling or heating becomes impossible.
  • the present invention seeks to provide an improved air conditioner.
  • the invention provides an air conditioner comprising: at least one indoor unit; an outdoor unit communicating with the indoor unit and having at least one compressor and one outdoor heat exchanger; a fluid path opening/closing valve for opening or closing a fluid path through which a refrigerant can flow to the outdoor heat exchanger; and a control unit for controlling the compressor and the fluid path opening/closing valve to perform appropriate compression and condensation of the refrigerant according to the load amount of the indoor unit.
  • an air conditioner in accordance with the first embodiment includes an indoor unit 10, an outdoor unit 20, a fluid path opening/closing valve 55 and a control unit 51.
  • Each of the indoor units 10 is disposed indoors, and includes an indoor heat exchanger 11, a cooling fan (not illustrated) disposed to promote heat exchange of the indoor heat exchanger 11 and an indoor expansion device 13 disposed at one side of the indoor heat exchanger 11 so as to expand a refrigerant.
  • the outdoor unit 20 includes compressors 23 for compressing a refrigerant and a pair of outdoor heat exchangers 41 and 41' connected with the compressors 23.
  • the compressors 23 are connected to each other via a flow pipe 25 through which oil can flow, and each of the compressors 23 has an oil separator 27 and a check valve 29 at its discharge side.
  • a four-way valve 31 is installed on the downstream side of the confluence junction so as to switch a fluid path of the refrigerant.
  • Each port of the four-way valve 31 communicates with each one end of connection pipes 33 connected with the indoor heat exchangers 41 and 41', an accumulator 35 and the indoor unit 10, respectively.
  • Check valves 43 and outdoor expansion devices 45 are provided on the downstream side of the outdoor heat exchangers 41 and 41', respectively, along the direction of the refrigerant flow.
  • the fluid path opening/closing valve 55 is disposed on the upstream side of the outdoor heat exchanger 41' along the direction of the refrigerant flow.
  • the fluid path opening/closing valve 55 blocks the fluid path of the refrigerant during small-load operation, and comprises an electric valve such as solenoid in order to allow the control by an electric signal.
  • the control unit 51 is implemented in the form of MICOM having a control program therein and is electrically connected with the compressors 23 and the fluid path opening/closing valve 55.
  • the control unit 51 calculates the load during small-load operation by which some indoor units 10 are operated, and appropriately controls compression and condensation on the basis of the calculated load.
  • control unit 51 calculates the cooling or heating load.
  • control unit 51 can calculate the cooling or heating load when all the indoor units 10 are operated.
  • control unit 51 control the compressors 23 such that some compressors 23 are operated or the compressors 23 are operated at low frequencies.
  • control unit 51 controls the fluid path opening/closing valve 55 such that the compressed refrigerant flows or does not flow to the outdoor heat exchanger 41'.
  • the compressors 23 and the fluid path opening/closing 55 can be simultaneously or sequentially controlled as occasion demands.
  • the air conditioner having the construction of Figures 2 and 3 can perform condensation corresponding only to the amount of the indoor unit 10 load when some indoor units 10 perform cooling or heating operation, so that a decrease of the system high pressure does not occur.
  • an air conditioner in accordance with a second embodiment includes an indoor unit 10, an outdoor unit 20, a fluid path opening/closing valve 55, a branch fluid path opening/closing valve 49 and a control unit 51.
  • the indoor unit 10 has the same construction and operation as the indoor unit 10 described in the first embodiment, a description therefor will be omitted.
  • the outdoor unit 20 includes compressors 23 for compressing a refrigerant and outdoor heat exchangers 41 and 41' connected with the compressors 23.
  • the compressor 23 Since the compressor 23 has the same construction and operation as the compressor 23 described in the first embodiment, a description therefor will be omitted.
  • the outdoor heat exchangers 41 and 41' include a plurality of heat exchange units 42 separated from each other; headers 47 having branch fluid paths through which the refrigerant branches off and is supplied to each of the heat exchange units 42; and distributors 57, respectively.
  • the branch fluid path includes a plurality of upstream branch fluid paths 48 for connecting the header 47 with the heat exchange unit 42, and a plurality of downstream branch fluid paths 58 for connecting the heat exchange unit 42 with the distributor 57.
  • the fluid path opening/closing valve 55 is installed on the upstream side of the header 47 of the outdoor heat exchanger 41', and opens or closes the corresponding fluid path.
  • the branch fluid path opening/closing valve 49 is installed on the upstream branch path 48 of the outer heat exchanger 41, and opens or closes the upstream branch fluid path 48 along the direction of the refrigerant flow.
  • Figure 5 illustrates an air conditioner according to a third embodiment in which a location where the branch fluid path opening/closing valve 49 is installed is changed from the upstream branch fluid path 48 of Figure 4 to the downstream branch fluid path 58.
  • the branch fluid path opening/closing valve 49 opens or closes the downstream branch fluid path 58.
  • the branch fluid path opening/closing valves 49 can be installed at both the upstream branch fluid path 48 and the downstream branch fluid paths 58.
  • control 51 is implemented as MICOM having a control program therein, and is electrically connected with the compressors 23, the fluid path opening/closing valve 55 and the branch fluid path opening/closing valve 59.
  • the control unit 51 calculates the load during small-load operation by which some indoor units 10 are operated. On the basis of the calculated load, the control unit 51 appropriately controls compression and condensation of the refrigerant.
  • control unit 51 calculates the cooing or heating load. Of course, if all the indoor units 10 perform cooling operations, the control unit 51 can calculate the cooling or heating load.
  • control unit 51 controls the compressors 23 such that some compressors 23 are operated or the compressors 23 are operated at low rates.
  • control unit 51 controls the fluid path opening/closing valve 55 such that the compressed refrigerant flows or does not flow to the outdoor heat exchanger 41'.
  • control unit 51 controls the branch fluid path opening/closing valve 49 such that the compressed refrigerant flows or does not flow to the outdoor heat exchanger 41.
  • the compressors 23, the fluid path opening/closing valve 55 and the branch fluid path opening/closing valve 49 can be simultaneously or sequentially controlled as occasion demands.
  • the air conditioner having the construction of Figures 4 to 6 can perform condensation corresponding to the amount of the indoor unit 10 load when some indoor units 10 perform cooling or heating operation, so that the decrease of the system high pressure does not occur.
  • the air conditioner in accordance with the fourth embodiment includes an indoor unit 10, an outdoor unit 20, a fluid path opening/closing valve 55, a branch fluid path opening/closing valve 59 and a control unit 51.
  • the indoor unit 10 has the same construction and operation as the indoor unit described in the first embodiment, a description therefor will be omitted.
  • the outdoor unit 20 includes a main outdoor unit 21 a and a sub-outdoor unit 21 b connected and installed in parallel.
  • the main outdoor unit 21 a and the sub-outdoor unit 21 b include a plurality of compressors 23, a plurality of outdoor heat exchangers 41 and 41' and accumulators 35 and four-way valves 31, respectively.
  • Oil separators 27 and check valves 29 are installed at discharge sides of the compressors 23 of the main outdoor unit 21 a and the sub-outdoor unit 21 b, respectively.
  • a pressure equalizing pipe 15 is provided between the main outdoor unit 21 a and the sub-outdoor unit 21 b so as to allow the upstream side of the outdoor heat exchangers 41 and 41' of the main outdoor unit 21 a and the upstream side of the outdoor heat exchangers 41 and 41' of the sub-outdoor unit 21 b to communicate with each other along the direction of the refrigerant flow.
  • the fluid path opening/closing valves 55 are installed on the upstream side of the outdoor heat exchanger 41 and 41' of the main outdoor unit 21 a and on the upstream of the outdoor heat exchangers 41 and 41' of the sub-outdoor unit 21 b, respectively, so as to open or close the corresponding fluid path along the direction of the refrigerant flow.
  • the branch fluid path opening/closing valve 59 is installed at the downstream branch fluid path 58 of the outdoor heat exchanger 41 of the main outdoor unit 21 a so as to open or close the corresponding branch fluid path 58.
  • control unit 51 is implemented in the form of MICOM having a control program therein, and is electrically connected with the compressors 23, the fluid path opening/closing valve 55 and the branch fluid path opening/closing valve 59.
  • the control unit 51 calculates the load during small-load operation by which some indoor units 10 are operated and appropriately controls compression and condensation on the basis of the calculated load.
  • control unit 51 calculates the cooling or heating load. Of course, when all the indoor units 10 perform cooling operations, the control unit 51 can calculate the cooling or heating load.
  • control unit 51 controls the compressors 23 such that some compressors 23 are operated or the compressors 23 are operated at low rates.
  • control unit 51 controls the fluid path opening/closing valve 55 such that the compressed refrigerant can flow or cannot flow to the outdoor heat exchanger 41 and 41' of the main outdoor unit 21 a and to the outdoor heat exchangers 41 and 41' of the sub-outdoor unit 21 b.
  • control unit 51 controls the branch fluid path opening/closing path 49 such that the compressed refrigerant can flow or cannot flow to the outdoor heat exchanger 41 of the main outdoor unit 21 a.
  • the compressor 23, the fluid path opening/closing valve 55 and the branch fluid path opening/closing valve 59 can be simultaneously or sequentially controlled as occasion demands.
  • the air conditioner having the construction of Figure 4 to 6 can perform condensation corresponding to the amount of the indoor unit 10 load when some indoor units 10 perform cooling or heating operation, so that the decrease of the system high pressure does not occur.
  • the air conditioner in accordance with one embodiment of the present invention of which description has been made so far includes the fluid path opening/closing valve and the branch fluid path opening/closing valve which are capable of opening or closing fluid paths and a control unit for controlling the valves. Accordingly, even during the small-load operation, a high pressure of a cycle is appropriately maintained to thusly increase reliability in operation.

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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)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP05256788A 2004-11-03 2005-11-02 Klimaanlage Withdrawn EP1655555A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040088948A KR100619756B1 (ko) 2004-11-03 2004-11-03 열교환용량 조절가능한 실외기 및 이를 구비한 공기조화기

Publications (2)

Publication Number Publication Date
EP1655555A2 true EP1655555A2 (de) 2006-05-10
EP1655555A3 EP1655555A3 (de) 2011-08-24

Family

ID=35840354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05256788A Withdrawn EP1655555A3 (de) 2004-11-03 2005-11-02 Klimaanlage

Country Status (4)

Country Link
US (1) US20060090487A1 (de)
EP (1) EP1655555A3 (de)
KR (1) KR100619756B1 (de)
CN (1) CN1769804A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047183A1 (de) * 2006-07-29 2009-04-15 LG Electronics, Inc. Mehrzonenklimaanlage mit gleichzeitiger heizung/kühlung
US20130105118A1 (en) * 2011-10-27 2013-05-02 Youngtaek HONG Air conditioner
EP2622284A1 (de) * 2010-09-27 2013-08-07 LG Electronics Inc. Kühlsystem und steuerverfahren dafür

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101023351B1 (ko) * 2008-07-16 2011-03-18 엘지전자 주식회사 용량 가변형 압축기 및 이를 구비하는 공기 조화 시스템
KR101006681B1 (ko) * 2008-07-16 2011-01-10 엘지전자 주식회사 모터
CN102288004A (zh) * 2011-06-14 2011-12-21 烟台同大制冷设备有限公司 多冷库制冷系统中压缩机组制冷量变量输出控制方法
KR101877986B1 (ko) * 2011-10-27 2018-07-12 엘지전자 주식회사 공기조화기
ITBO20120196A1 (it) * 2012-04-12 2013-10-13 Carpigiani Group Ali Spa Macchina per la lavorazione ed il mantenimento di gelato, sorbetti e prodotti simili
KR102032183B1 (ko) * 2013-01-18 2019-10-15 엘지전자 주식회사 공기 조화기 및 그 제어방법
JP6351494B2 (ja) * 2014-12-12 2018-07-04 日立ジョンソンコントロールズ空調株式会社 空気調和機
CN105066501B (zh) * 2015-07-22 2017-05-03 广东美的暖通设备有限公司 多联机室外机和具有其的多联机
US10465948B2 (en) * 2015-09-16 2019-11-05 Lg Electronics Inc. Air conditioner
JP6811605B2 (ja) * 2016-12-28 2021-01-13 ヤンマーパワーテクノロジー株式会社 ヒートポンプ
CN114838457B (zh) * 2022-03-16 2024-02-20 青岛海尔空调器有限总公司 防止空调冻结的控制方法、控制系统、电子设备和介质
CN114838458B (zh) * 2022-03-16 2024-02-20 青岛海尔空调器有限总公司 防止空调冻结的控制方法、控制系统、电子设备和介质

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JPS646657A (en) * 1987-06-26 1989-01-11 Matsushita Refrigeration Multiple chamber type air conditioner
GB2212604A (en) * 1987-11-13 1989-07-26 Toshiba Kk External heat exchange unit
JPH0464879A (ja) * 1990-07-04 1992-02-28 Hitachi Ltd 凝縮器
US5142879A (en) * 1990-03-19 1992-09-01 Mitsubishi Denki Kabushiki Kaisha Air conditioning system
JPH04324069A (ja) * 1991-04-23 1992-11-13 Sanyo Electric Co Ltd 冷凍装置

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JP3289366B2 (ja) * 1993-03-08 2002-06-04 ダイキン工業株式会社 冷凍装置
KR100437803B1 (ko) * 2002-06-12 2004-06-30 엘지전자 주식회사 냉난방 동시형 멀티공기조화기 및 그 제어방법
KR100717444B1 (ko) * 2003-10-20 2007-05-14 엘지전자 주식회사 멀티 에어컨 및 에어컨 제어방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS646657A (en) * 1987-06-26 1989-01-11 Matsushita Refrigeration Multiple chamber type air conditioner
GB2212604A (en) * 1987-11-13 1989-07-26 Toshiba Kk External heat exchange unit
US5142879A (en) * 1990-03-19 1992-09-01 Mitsubishi Denki Kabushiki Kaisha Air conditioning system
JPH0464879A (ja) * 1990-07-04 1992-02-28 Hitachi Ltd 凝縮器
JPH04324069A (ja) * 1991-04-23 1992-11-13 Sanyo Electric Co Ltd 冷凍装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2047183A1 (de) * 2006-07-29 2009-04-15 LG Electronics, Inc. Mehrzonenklimaanlage mit gleichzeitiger heizung/kühlung
EP2047183A4 (de) * 2006-07-29 2011-03-09 Lg Electronics Inc Mehrzonenklimaanlage mit gleichzeitiger heizung/kühlung
US8091377B2 (en) 2006-07-29 2012-01-10 Lg Electronics Inc. Simultaneous heating/cooling multi air conditioner
EP2622284A1 (de) * 2010-09-27 2013-08-07 LG Electronics Inc. Kühlsystem und steuerverfahren dafür
EP2622284A4 (de) * 2010-09-27 2017-04-05 LG Electronics Inc. Kühlsystem und steuerverfahren dafür
US20130105118A1 (en) * 2011-10-27 2013-05-02 Youngtaek HONG Air conditioner
US9416993B2 (en) * 2011-10-27 2016-08-16 Lg Electronics Inc. Air conditioner

Also Published As

Publication number Publication date
EP1655555A3 (de) 2011-08-24
US20060090487A1 (en) 2006-05-04
KR20060039739A (ko) 2006-05-09
CN1769804A (zh) 2006-05-10
KR100619756B1 (ko) 2006-09-06

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