EP1321727A2 - Wärmepumpenartige Klimaanlage - Google Patents

Wärmepumpenartige Klimaanlage Download PDF

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Publication number
EP1321727A2
EP1321727A2 EP02023360A EP02023360A EP1321727A2 EP 1321727 A2 EP1321727 A2 EP 1321727A2 EP 02023360 A EP02023360 A EP 02023360A EP 02023360 A EP02023360 A EP 02023360A EP 1321727 A2 EP1321727 A2 EP 1321727A2
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EP
European Patent Office
Prior art keywords
coolant
heat exchangers
indoor
port
air conditioner
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.)
Granted
Application number
EP02023360A
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English (en)
French (fr)
Other versions
EP1321727B1 (de
EP1321727A3 (de
Inventor
Sae-Dong Jang
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
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Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1321727A2 publication Critical patent/EP1321727A2/de
Publication of EP1321727A3 publication Critical patent/EP1321727A3/de
Application granted granted Critical
Publication of EP1321727B1 publication Critical patent/EP1321727B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • 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
    • F25B2313/0233—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
    • 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
    • F25B2313/0251—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units being defrosted alternately

Definitions

  • the present invention relates to a heat pump type air conditioner, and in particular to a heat pump type air conditioner which is capable of performing an indoor heating operation while performing an outdoor defrosting operation.
  • a heat pump type air conditioner is an air conditioner performable both a cooling operation and a heating operation. Because it includes an evaporator and a condenser, etc., it can perform a heating operation as well as a cooling operation by reversing a cooling cycle.
  • Figure 1 illustrates a cooling cycle of the conventional heat pump type air conditioner.
  • the conventional heat pump type air conditioner includes an indoor unit 102 placed indoors and performing cooling or heating and an outdoor unit 104 placed outdoors and performing a heat exchange operation.
  • the indoor unit 102 includes at least one indoor heat exchanger 106 installed in each room and performing cooling and heating operations.
  • the outdoor unit 104 includes a compressor 108 for compressing a coolant; a four-way valve 110 for switching a flow of the coolant normally or reversely; an outdoor heat exchanger 112 used as a condenser in cooling and an evaporator in heating; and an expansion valve 116 installed at a coolant pipe 114 for connecting the outdoor heat exchanger 112 with the indoor heat exchanger 106 and turning coolant gas into low temperature-low pressure state.
  • a liquid receiver 118 for dividing the coolant into liquid and gas is installed at the rear of the expansion valve 116, and an opening/closing valve 120 is installed at the coolant pipe 114 between the outdoor heat exchanger 112 and the indoor heat exchanger 106 in order to open the coolant supply to the indoor unit 102 and the coolant discharge to the outdoor unit 104.
  • An accumulator 122 for turning the coolant into a gas state is installed at a certain side of the compressor 108, and an oil divider 124 is installed at a discharge side of the compressor 108.
  • the coolant gas compressed in the compressor 108 passes the four-way valve 110, flows into the outdoor heat exchanger 112, is converted into a low temperature-low pressure state while passing the expansion valve 116 and flows into the indoor heat exchanger 106. And, the coolant gas evaporated in the indoor heat exchanger 106 performs the indoor cooling operation while performing heat-exchange with indoor air and is sucked into the compressor 108 through the four-way valve 110 and is circulated again.
  • the coolant gas discharged from the compressor 108 flows into the indoor heat exchanger 106 through the four-way valve 110, is condensed and performs the indoor heating operation while performing heat-exchange with indoor air.
  • the coolant passing the indoor heat exchanger 106 is turned into a low temperature-low pressure state and is evaporated through the outdoor heat exchanger 112. The evaporated coolant gas is sucked into the compressor 108 through the four-way valve 110 and is circulated again.
  • the outdoor heat exchanger 112 in order to perform a defrosting operation, by performing the cooling operation for a certain time, the outdoor heat exchanger 112 is used as a condenser, and accordingly frost formed at the outdoor heat exchanger 112 melts by the condensing heat.
  • a heat pump type air conditioner which is capable of maintaining a room temperature constantly by including two outdoor heat exchangers and performing a heating operation with one heat exchanger when the other heat exchanger performs a defrosting operation.
  • a heat pump type air conditioner which is capable of improving a cooling/heating performance by varying a heat exchange performance of each indoor heat exchanger according to a size of each room.
  • a heat pump type air conditioner includes a compressor for compressing a coolant; a four-way valve for switching a flow of the coolant normally or reversely; a first and a second outdoor heat exchangers respectively installed outdoors, used as a condenser in cooling and used as an evaporator in heating; plural indoor heat exchangers respectively installed at each indoor space and performing a cooling/heating operation; a first and a second outdoor expansion valves respectively installed at coolant pipes for connecting the first and second outdoor heat exchangers with the indoor heat exchangers in order to turn the coolant into a low temperature-low pressure state and open/close the coolant pipes; a control unit for making one of the first and second outdoor heat exchangers perform a defrosting operation and making the rest perform a heating operation by controlling the first and second outdoor expansion valves; and plural indoor expansion valves respectively installed at the indoor coolant pipes and variously adjusting a quantity of the coolant flowing into the plural indoor heat exchangers.
  • the four-way valve includes a first port connected to a discharge side of the compressor; a second port connected to the indoor heat exchangers by a first coolant pipe; a third port connected to the first and second outdoor heat exchangers by a second and a third coolant pipes; and a fourth port connected to a suction side of the compressor; wherein the first port communicates with the third port and the second port communicates with the fourth port in the cooling operation, and the first port communicates with the second port and the third port communicates with the fourth port in the heating operation.
  • the second coolant pipe connects the first outdoor heat exchanger with the four-way valve
  • a fourth coolant pipe connects the first outdoor heat exchanger with the indoor heat exchangers
  • a sixth coolant pipe connects the fourth coolant pipe with the second port of the four-way valve
  • a first valve is installed at the sixth coolant pipe in order to open/close it according to an electric signal transmitted from the control unit.
  • the first valve is a solenoid type for opening the sixth coolant pipe according to an electric signal applied from the control unit.
  • the third coolant pipe connects the second outdoor heat exchanger with the four-way valve
  • a fifth coolant pipe connects the second outdoor heat exchanger with the indoor heat exchangers
  • a seventh coolant pipe connects the fifth coolant pipe with the second port of the four-way valve
  • a second valve is installed at the seventh coolant pipe to open/close it according to an electric signal transmitted from the control unit.
  • the second valve is a solenoid type for opening the seventh coolant pipe according to an electric signal applied from the control unit.
  • the control unit opens the sixth coolant pipe by operating the first valve and closes the fourth coolant pipe by operating the first outdoor expansion valve in the defrosting operation of the first outdoor heat exchanger.
  • the control unit opens the seventh coolant pipe by operating the second valve and closes the fifth coolant pipe by operating the second outdoor expansion valve in the defrosting operation of the second outdoor heat exchanger.
  • Figure 2 illustrates a construction of a cooling cycle of a heat pump type air conditioner in accordance with the present invention.
  • the heat pump type air conditioner in accordance with the present invention includes an indoor unit 2 installed indoors and performing a cooling or a heating operation; an outdoor unit 4 installed outdoors, connected to the indoor unit 2 by a coolant pipe and performing a heat exchange operation; and a control unit 6 respectively controlling a cooling operation, a heating operation and a defrosting operation.
  • the indoor unit 2 includes plural indoor heat exchangers 8a, 8b respectively installed at each indoor space; and plural indoor expansion valves 10a, 10b for turning the coolant into a low temperature-low pressure state and adjusting a flow amount of the coolant supplied to each indoor heat exchanger 8a, 8b.
  • the outdoor unit 4 includes a compressor 12 for compressing the coolant; a four-way valve 14 for switching a flow of the coolant into a normal direction or a reverse direction; a first and a second outdoor heat exchangers 16, 18 used as a condenser in a cooling operation and an evaporator in a heating operation; and a first and a second outdoor expansion valves 20, 22 respectively installed at coolant pipes connecting the first and second heat exchangers 16, 18 with the indoor heat exchangers 8a, 8b, turning the coolant gas into a low temperature-low pressure state and opening/closing the coolant pipes.
  • An accumulator 24 for sucking the coolant is installed at a suction side of the compressor 12, and an oil divider 26 is installed at a discharge side of the compressor 12.
  • a liquid receiver 28 is connected to the coolant pipes connecting the first and second outdoor heat exchangers 16, 18 with the indoor heat exchangers 8a, 8b.
  • the four-way valve 14 includes a first port 30 connected to the discharge side of the compressor 12; a second port 32 connected to the indoor heat exchangers 8a, 8b; a third port 34 connected to the first and second outdoor heat exchangers 16, 18; and a fourth port 36 connected to the suction part of the compressor 12.
  • a first coolant pipe 40 connects the second port 32 of the four-way valve 14 with the indoor heat exchangers 8a, 8b, a second coolant pipe 42 connects the third port 34 with the first outdoor heat exchanger 16, and a third coolant pipe 44 connects the third port 34 with the second outdoor heat exchanger 18.
  • a fourth coolant pipe 46 connects the first outdoor heat exchanger 16 with the indoor heat exchangers 8a, 8b
  • a fifth coolant pipe 48 connects the second outdoor heat exchanger 18 with the indoor heat exchanger 8a, 8b.
  • a first outdoor expansion valve 20 is installed at the fourth coolant pipe 46
  • a second outdoor expansion valve 22 is installed at the fifth coolant pipe 48.
  • the fourth coolant pipe 46 and the fifth coolant pipe 48 get together and is connected to the liquid receiver 28, and plural indoor expansion valves 10a, 10b are installed at the coolant pipes connecting the liquid receiver 28 with each indoor heat exchanger 8a, 8b.
  • an opening/closing valve 52 for intermitting a coolant flow is respectively installed at a suction pipe and a discharge pipe connected to the indoor heat exchangers 8a, 8b.
  • a sixth coolant pipe 54 connects the fourth coolant pipe 46 with the first coolant pipe 40, and a seventh coolant pipe 56 connects the fifth coolant pipe 48 with the first coolant pipe 40.
  • a first valve 58 is installed at the sixth coolant pipe 54 to open/close it, and a second valve 60 is installed at the seventh coolant pipe 56 to open/close it.
  • first and second valves 58, 60 prefferably be a solenoid type for respectively opening the sixth and seventh coolant pipes 54, 56 when an electric signal is applied from the control unit 6.
  • FIG. 3 is a block diagram illustrating a control structure of the heat pump type air conditioner in accordance with the present invention.
  • the heat pump type air conditioner in accordance with the present invention includes an operation selecting unit 70 operated by a user; a first sensing unit 72 for sensing whether the first outdoor heat exchanger 18 is covered with frost not less than a setting value; a second sensing unit 74 for sensing whether the second outdoor heat exchanger 18 is covered with frost not less than a setting value; and a control unit 6 for performing the cooling operation, the heating operation and the defrosting operation in accordance with a signal transmitted from the operation selecting unit 70, the first and second sensing units 72, 74.
  • first and second sensing units 72, 74 can be applied to the first and second sensing units 72, 74, and any method capable of grasping whether the first outdoor heat exchanger 16 and the second outdoor heat exchanger 18 are covered with frost can be applied.
  • the control unit 6 performs the cooling/heating switching by operating the four-way valve 14 according to the operation of the operation selecting unit 70.
  • the control unit 6 makes one of the first outdoor heat exchanger 20 and the second outdoor heat exchanger 22 perform the defrosting operation and makes the rest perform the heating operation according to the signal received from the first and second sensing units 72, 74.
  • control unit 6 adjusts a quantity of the coolant supplied to each indoor heat exchanger 8a, 8b by adjusting opening of the indoor expansion valves 10a, 10b.
  • the control unit 6 respectively connects the second port 32 and the fourth port 36 with the first port 30 and the third port 34 by operating the four-way valve 14. And, the first and second valves 58, 60 maintain the closed state.
  • the compressed coolant flows into the first port 30 of the four-way valve 14, is discharged to the third port 34, respectively flows into the first outdoor heat exchanger 16 and the second outdoor heat exchanger 18 through the second and third coolant pipes 42, 44 and performs the heat exchange.
  • the coolant finishing the heat exchange is discharged into the four and fifth coolant pipes 46, 48, is turned into the low temperature-low pressure state while passing the first and second outdoor expansion valves 20, 22 and flows into each indoor heat exchanger 8a, 8b.
  • each indoor heat exchanger 8a, 8b performs the indoor cooling while performing the heat exchange with indoor air, flows into the second port 32 of the four-way valve 14 through the first coolant pipe 40, is discharged into the third port 34, flows into the compressor 12, is compressed, and accordingly the coolant is circulated again.
  • Figure 4 is a state diagram illustrating the heating operation of the heat pump type air conditioner in accordance with the present invention.
  • the control unit 6 connects the first port 30 of the four-way valve 14 with the second port 32, connects the third port 34 with the fourth port 36, and accordingly the coolant flows in the reverse direction.
  • the first valve 58 and the second valve 60 are in the closed state.
  • the coolant compressed by the operation of the compressor 12 flows into the first port 30 of the four-way valve 14, is discharged into the second port 32, flows into the indoor heat exchangers 8a, 8b through the first coolant pipe 40, is condensed and performs the heat exchange with indoor air, and accordingly the indoor heating is performed.
  • the coolant passing the indoor heat exchangers 8a, 8b is turned into the low temperature-low pressure state while passing the indoor expansion valves 10a, 10b, the first and second outdoor expansion valves 10a, 10b and is evaporated while passing the first and second outdoor heat exchanges 16, 18 through the fourth and fifth coolant pipes 46, 48.
  • the evaporated coolant flows again into the third port 34 of the four-way valve 14, is discharged into the fourth port 36, is sucked into the compressor 12, and accordingly the coolant is circulated again.
  • the control unit 6 adjusts opening of each indoor expansion valve 10a, 10b according to the signal of the operation selecting unit 70 in order to adjust a flow amount of the coolant supplied to each indoor heat exchanger 8a, 8b, and accordingly the cooling/heating capacity can be adjusted.
  • Figure 5 is a state diagram illustrating the defrosting operation of the heat pump type air conditioner in accordance with the present invention.
  • control unit 6 judges one of the outdoor heat exchanges is covered with frost not less than the setting value after receiving the signal transmitted from the first and second sensing units 72, 74, it makes the outdoor heat exchanger covered with frost to perform the defrosting operation and makes the rest to perform the heating operation.
  • the control unit 6 opens the sixth coolant pipe 54 by operating the first valve 58 and closes the fourth coolant pipe 46 by operating the first outdoor expansion valve 20.
  • the coolant compressed in the compressor 12 is discharged into the second port 32 of the four-way valve 14, is supplied to each indoor heat exchanger 8a, 8b through the first coolant pipe 40.
  • Part of the coolant discharged into the second port 32 is supplied to the first outdoor heat exchanger 16 through the sixth coolant pipe 54, is condensed and performs the defrosting operation.
  • the coolant discharged after finishing the defrosting operation of the first outdoor heat exchanger 16 flows into the compressor 12 through the second coolant pipe 42 and the four-way valve 14.
  • the second outdoor heat exchanger 18 performs the normal heating operation same as the above-described heating operation.
  • the second outdoor heat exchanger 18 performs the heating operation normally, and accordingly the indoor heating can be continually performed.
  • control unit 6 opens the seventh coolant pipe 56 by operating the second valve 60 and closes the fifth coolant pipe 48 by operating the second outdoor expansion valve 60.
  • the coolant compressed in the compressor 12 is discharged into the second port 32 of the four-way valve 14, is supplied to each indoor heat exchanger 8a, 8b through the first coolant pipe 40. And, part of the coolant discharged into the second port 32 is supplied to the second outdoor heat exchanger 18 through the seventh coolant pipe 56, is condensed and performs the defrosting operation. And, the coolant discharged after finishing the defrosting operation of the second outdoor heat exchanger 18 flows again into the compressor 12 through the third coolant pipe 44 and the four-way valve 14.
  • the first outdoor heat exchanger 16 can normally perform the heating operation same as the above-described heating operation.
  • a cooling/heating capacity can be varied according to a size of an indoor space by adjusting a quantity of the coolant supplied to each indoor heat exchanger by adjusting opening of each indoor expansion valve.
EP02023360A 2001-12-20 2002-10-18 Wärmepumpenartige Klimaanlage Expired - Fee Related EP1321727B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001081991 2001-12-20
KR10-2001-0081991A KR100442392B1 (ko) 2001-12-20 2001-12-20 한 쌍의 실외열교환기를 구비한 냉난방 겸용 공기조화기

Publications (3)

Publication Number Publication Date
EP1321727A2 true EP1321727A2 (de) 2003-06-25
EP1321727A3 EP1321727A3 (de) 2003-11-19
EP1321727B1 EP1321727B1 (de) 2007-04-25

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Family Applications (1)

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EP02023360A Expired - Fee Related EP1321727B1 (de) 2001-12-20 2002-10-18 Wärmepumpenartige Klimaanlage

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EP (1) EP1321727B1 (de)
JP (1) JP3816860B2 (de)
KR (1) KR100442392B1 (de)
CN (1) CN1190640C (de)
DE (1) DE60219753T2 (de)

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EP1598610A2 (de) * 2004-05-21 2005-11-23 LG Electronics Inc. Einrichtung und Methode zur Steuerung des Heizbetriebes einer Wärmepumpenanlage
EP1657505A1 (de) * 2004-10-26 2006-05-17 LG Electronics, Inc. Verfahren und System zur Erkennung von Verstopfungen in einem Rohr einer Mehreinheiten-Klimaanlage
CN102155790A (zh) * 2011-05-11 2011-08-17 吴忠南 一种空气源热泵热水器
CZ302759B6 (cs) * 2006-05-12 2011-10-26 Klazar@Ludek Tepelné cerpadlo s odtáváním
EP2581692A3 (de) * 2011-10-12 2013-06-26 Lg Electronics Inc. Klimaanlage
WO2014029316A1 (zh) * 2012-08-21 2014-02-27 Wang Lingfei 带除霜结构的热泵及其除霜方法
CN106403200A (zh) * 2016-10-27 2017-02-15 北京联合大学 空调送风控制系统及方法
US20170314795A1 (en) * 2016-05-02 2017-11-02 Lee Wa Wong Air Conditioning and Heat Pump Tower with Energy Efficient Arrangement
US20170314813A1 (en) * 2016-05-02 2017-11-02 Lee Wa Wong Split-Type Air Conditioning and Heat Pump System with Energy Efficient Arrangement
EP2525160A4 (de) * 2010-01-14 2018-03-14 Mitsubishi Heavy Industries Thermal Systems, Ltd. Klimaanlage
EP4033170A4 (de) * 2019-09-17 2022-11-09 Qingdao Haier Air-Conditioning Electronic Co., Ltd Verfahren zur steuerung der gleichmässigen vereisung von ausseneinheiten in einem multi-split-klimaanlagensystem

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KR101013373B1 (ko) * 2003-08-28 2011-02-14 삼성전자주식회사 공기조화기
US7222496B2 (en) 2004-06-18 2007-05-29 Winiamando Inc. Heat pump type air conditioner having an improved defrosting structure and defrosting method for the same
JP4151625B2 (ja) * 2004-07-21 2008-09-17 松下電器産業株式会社 空気調和機
KR20060029566A (ko) * 2004-10-02 2006-04-06 삼성전자주식회사 공기 조화기 및 그 제어 방법
JP2006132797A (ja) * 2004-11-02 2006-05-25 Matsushita Electric Ind Co Ltd 空気調和装置
JP2010139097A (ja) * 2008-12-09 2010-06-24 Mitsubishi Electric Corp 空気調和機
KR101321546B1 (ko) * 2009-11-13 2013-10-28 엘지전자 주식회사 공기조화기
CN102183107A (zh) * 2011-03-30 2011-09-14 上海汉福空气处理设备有限公司 一种工艺性空调的多级热气旁通智能控制系统
CN102183108A (zh) * 2011-05-06 2011-09-14 广东美的暖通设备有限公司 三管制热回收系统的除霜方法
CN102401521A (zh) * 2011-05-24 2012-04-04 宁波奥克斯电气有限公司 螺杆式压缩多联空调制热运行过程中的除霜方法
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DE102012024577A1 (de) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Wärmepumpenanordnung und Verfahren zum Betrieb einer Wärmepumpenanordnung
CN103822314A (zh) * 2014-02-14 2014-05-28 银翔 热泵型分体空调器室外机及包括该室外机的分体空调器
KR101694604B1 (ko) 2015-01-12 2017-01-09 엘지전자 주식회사 공기 조화기
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KR101694603B1 (ko) * 2015-01-12 2017-01-09 엘지전자 주식회사 공기 조화기
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CN104896785B (zh) * 2015-05-15 2017-06-09 广东美的暖通设备有限公司 一种喷气增焓多联机空调系统及其控制方法
CN108224837A (zh) * 2017-12-19 2018-06-29 青岛海尔空调电子有限公司 空调器系统
CN109405365A (zh) * 2018-09-27 2019-03-01 珠海格力电器股份有限公司 冷媒循环系统及其控制方法、空气调节装置
CN113932323B (zh) * 2020-06-29 2022-08-30 青岛海信日立空调系统有限公司 一种空调室外机
CN112797669B (zh) * 2021-01-05 2022-03-29 珠海格力电器股份有限公司 热泵系统及其控制方法、控制装置和空调设备

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EP1197710A2 (de) * 2000-10-13 2002-04-17 Eaton-Williams Group Limited Wärmepumpenausstattung

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US4565070A (en) * 1983-06-01 1986-01-21 Carrier Corporation Apparatus and method for defrosting a heat exchanger in a refrigeration circuit
US4774813A (en) * 1986-04-30 1988-10-04 Hitachi, Ltd. Air conditioner with defrosting mode
US5186016A (en) * 1990-11-06 1993-02-16 Kabushiki Kaisha Toshiba Defrosting control method and apparatus for air conditioner
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US6276158B1 (en) * 1998-07-23 2001-08-21 Eaton-Williams Group Limited Heat exchange equipment
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EP1197710A2 (de) * 2000-10-13 2002-04-17 Eaton-Williams Group Limited Wärmepumpenausstattung

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598610A3 (de) * 2004-05-21 2006-11-02 LG Electronics Inc. Einrichtung und Methode zum Steuerung des Heizbetiebes einer Wärmepumpenanlage
EP1598610A2 (de) * 2004-05-21 2005-11-23 LG Electronics Inc. Einrichtung und Methode zur Steuerung des Heizbetriebes einer Wärmepumpenanlage
EP1657505A1 (de) * 2004-10-26 2006-05-17 LG Electronics, Inc. Verfahren und System zur Erkennung von Verstopfungen in einem Rohr einer Mehreinheiten-Klimaanlage
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JP3816860B2 (ja) 2006-08-30
DE60219753T2 (de) 2007-08-16
JP2003194384A (ja) 2003-07-09
EP1321727B1 (de) 2007-04-25
EP1321727A3 (de) 2003-11-19
CN1190640C (zh) 2005-02-23
KR100442392B1 (ko) 2004-07-30
KR20030051091A (ko) 2003-06-25
CN1430030A (zh) 2003-07-16
DE60219753D1 (de) 2007-06-06

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