KR960001572B1 - Multi-type conditioner system with optimum control for gaseous - Google Patents

Multi-type conditioner system with optimum control for gaseous Download PDF

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Publication number
KR960001572B1
KR960001572B1 KR91019546A KR910019546A KR960001572B1 KR 960001572 B1 KR960001572 B1 KR 960001572B1 KR 91019546 A KR91019546 A KR 91019546A KR 910019546 A KR910019546 A KR 910019546A KR 960001572 B1 KR960001572 B1 KR 960001572B1
Authority
KR
South Korea
Prior art keywords
gaseous
conditioner system
optimum control
type conditioner
type
Prior art date
Application number
KR91019546A
Other languages
English (en)
Other versions
KR920010230A (ko
Inventor
Tooru Kubo
Yoshinobu Fujita
Toshiaki Kawamura
Mitsunobu Maezawa
Original Assignee
Toshiba Kk
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 Toshiba Kk filed Critical Toshiba Kk
Publication of KR920010230A publication Critical patent/KR920010230A/ko
Application granted granted Critical
Publication of KR960001572B1 publication Critical patent/KR960001572B1/ko

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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
    • F25B13/00Compression machines, plants 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
    • 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
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/345Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • F25B41/347Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/1917Control of temperature characterised by the use of electric means using digital means
    • 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, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • 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, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0232Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses
    • F25B2313/02323Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses during heating
    • 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
    • F25B2400/00General 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
    • F25B2400/19Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
    • 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
    • F25B2500/00Problems to be solved
    • F25B2500/24Low amount of refrigerant in the system
    • 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
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/021Inverters therefor
    • 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
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • 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
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2104Temperatures of an indoor room or compartment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S706/00Data processing: artificial intelligence
    • Y10S706/90Fuzzy logic

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)
KR91019546A 1990-11-02 1991-11-02 Multi-type conditioner system with optimum control for gaseous KR960001572B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2295457A JP2909190B2 (ja) 1990-11-02 1990-11-02 空気調和機
JP1990-295457 1990-11-02

Publications (2)

Publication Number Publication Date
KR920010230A KR920010230A (ko) 1992-06-26
KR960001572B1 true KR960001572B1 (en) 1996-02-02

Family

ID=17820838

Family Applications (1)

Application Number Title Priority Date Filing Date
KR91019546A KR960001572B1 (en) 1990-11-02 1991-11-02 Multi-type conditioner system with optimum control for gaseous

Country Status (4)

Country Link
US (1) US5263333A (ko)
JP (1) JP2909190B2 (ko)
KR (1) KR960001572B1 (ko)
GB (1) GB2251959B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800623B1 (ko) * 2001-05-18 2008-02-05 주식회사 엘지이아이 공기조화기의 운전제어방법

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3117339B2 (ja) * 1993-01-27 2000-12-11 東芝キヤリア株式会社 冷凍サイクル装置
US5516041A (en) * 1993-06-30 1996-05-14 Ford Motor Company Method and control system for controlling an automotive HVAC system to prevent fogging
US5410890A (en) * 1994-01-27 1995-05-02 Fujitsu General Limited Control apparatus of air-conditioner
ES2091155B1 (es) * 1994-02-16 1998-04-16 Furjitsu General Limited Metodo de controlar el funcionamiento de un acondicionador de aire para recintos.
TW299392B (ko) * 1994-04-19 1997-03-01 Sanyo Electric Co
US5502970A (en) * 1995-05-05 1996-04-02 Copeland Corporation Refrigeration control using fluctuating superheat
JPH09229500A (ja) * 1995-12-27 1997-09-05 Mando Mach Co Ltd 多室エアコン
CN1134620C (zh) * 1996-04-12 2004-01-14 约克国际有限公司 模糊逻辑液位控制
KR100210079B1 (ko) * 1996-10-26 1999-07-15 윤종용 공기조화기의 실내기 독립운전장치
US6206652B1 (en) 1998-08-25 2001-03-27 Copeland Corporation Compressor capacity modulation
KR19990081638A (ko) * 1998-04-30 1999-11-15 윤종용 멀티형 공조기기 및 그 제어방법
FR2811069B1 (fr) * 2000-06-29 2006-01-06 Pierre Cantau Dispositif de refroidissement/rechauffage d'un liquide alimentaire
KR100382488B1 (ko) * 2000-11-10 2003-05-09 엘지전자 주식회사 2개의 압축기를 갖는 공조시스템의 전자팽창변 제어방법
US6735964B2 (en) * 2002-06-05 2004-05-18 Carrier Corporation Air conditioning system with refrigerant charge management
JP2004361036A (ja) * 2003-06-06 2004-12-24 Daikin Ind Ltd 空気調和装置
US7716943B2 (en) * 2004-05-12 2010-05-18 Electro Industries, Inc. Heating/cooling system
KR20060012837A (ko) * 2004-08-04 2006-02-09 삼성전자주식회사 멀티 에어컨 시스템 및 멀티 에어컨 시스템의 운전방법
US7257955B2 (en) * 2004-09-08 2007-08-21 Carrier Corporation Discharge valve to increase heating capacity of heat pumps
US7621141B2 (en) * 2004-09-22 2009-11-24 York International Corporation Two-zone fuzzy logic liquid level control
JP4067009B2 (ja) * 2005-05-30 2008-03-26 ダイキン工業株式会社 調湿装置
JP4120682B2 (ja) * 2006-02-20 2008-07-16 ダイキン工業株式会社 空気調和装置および熱源ユニット
JP5055965B2 (ja) * 2006-11-13 2012-10-24 ダイキン工業株式会社 空気調和装置
JP5125116B2 (ja) * 2007-01-26 2013-01-23 ダイキン工業株式会社 冷凍装置
US8157538B2 (en) 2007-07-23 2012-04-17 Emerson Climate Technologies, Inc. Capacity modulation system for compressor and method
DE102008028290B4 (de) * 2008-06-16 2019-05-16 Mahle International Gmbh Einrichtung zur Kühlung eines Kühlmittels, Kreislauf zur Aufladung einer Brennkraftmaschine und Verfahren zum Kühlen eines zur Aufladung einer Brennkraftmaschine vorgesehenen im Wesentlichen gasförmigen Ladefluids
US8156750B2 (en) * 2008-07-29 2012-04-17 Agri Control Technologies, Inc. Dynamic superheat control for high efficiency refrigeration system
KR101581466B1 (ko) * 2008-08-27 2015-12-31 엘지전자 주식회사 공기조화시스템
ES2623055T3 (es) 2009-01-27 2017-07-10 Emerson Climate Technologies, Inc. Sistema y método de descarga para un compresor
US9322562B2 (en) * 2009-04-01 2016-04-26 Mitsubishi Electric Corporation Air-conditioning apparatus
CN102597640B (zh) * 2009-10-27 2014-12-31 三菱电机株式会社 空调装置
JP5516602B2 (ja) * 2009-12-22 2014-06-11 ダイキン工業株式会社 冷凍装置
KR101146460B1 (ko) * 2010-02-08 2012-05-21 엘지전자 주식회사 냉매시스템
KR101146409B1 (ko) * 2010-02-08 2012-05-17 엘지전자 주식회사 냉매시스템
JP5404487B2 (ja) * 2010-03-23 2014-01-29 三菱電機株式会社 多室形空気調和機
JP5611353B2 (ja) * 2010-07-29 2014-10-22 三菱電機株式会社 ヒートポンプ
KR101806839B1 (ko) * 2011-07-26 2018-01-10 삼성전자주식회사 멀티 공기 조화기 및 그 제어 방법
JP5370560B2 (ja) * 2011-09-30 2013-12-18 ダイキン工業株式会社 冷媒サイクルシステム
US10378533B2 (en) 2011-12-06 2019-08-13 Bitzer Us, Inc. Control for compressor unloading system
WO2013084738A1 (ja) * 2011-12-09 2013-06-13 サンデン株式会社 車両用空気調和装置
JP5413480B2 (ja) * 2012-04-09 2014-02-12 ダイキン工業株式会社 空気調和装置
JP5573881B2 (ja) * 2012-04-16 2014-08-20 ダイキン工業株式会社 空気調和機
JP6105868B2 (ja) * 2012-06-26 2017-03-29 株式会社不二工機 電動弁制御装置及び電動弁装置
US10436463B2 (en) * 2012-11-29 2019-10-08 Mitsubishi Electric Corporation Air-conditioning apparatus
WO2015181980A1 (ja) * 2014-05-30 2015-12-03 三菱電機株式会社 空気調和機
JP6693312B2 (ja) * 2016-07-07 2020-05-13 株式会社富士通ゼネラル 空気調和装置
JP6528909B2 (ja) * 2016-09-30 2019-06-12 ダイキン工業株式会社 冷凍装置
US10976090B2 (en) 2016-09-30 2021-04-13 Daikin Industries, Ltd. Air conditioner
US10496108B2 (en) * 2017-07-19 2019-12-03 Heatcraft Refrigeration Products Llc Cooling system flood prevention tool
CN108180682B (zh) * 2017-12-28 2020-06-09 Tcl空调器(中山)有限公司 电子膨胀阀控制方法、空调机组及计算机可读存储介质
CN108489069B (zh) * 2018-01-31 2020-08-18 青岛海尔空调电子有限公司 一种空调散热结构控制方法及***
CN110500667B (zh) * 2018-05-18 2021-08-03 广东Tcl智能暖通设备有限公司 一种多联室内机降噪方法、空调***及存储介质
CN108518808B (zh) * 2018-06-12 2020-08-04 广东美的暖通设备有限公司 空调的控制方法、装置及具有其的空调
CN109084421B (zh) * 2018-08-03 2020-08-18 广东美的暖通设备有限公司 空调器的控制方法、控制装置及空调器
CN110160231B (zh) * 2019-05-29 2021-11-30 广东美的暖通设备有限公司 阀体控制方法、室内机以及计算机可读存储介质
CN110173854B (zh) * 2019-05-29 2023-08-22 青岛海尔空调电子有限公司 一种空调器低温制热启动控制方法和空调器
CN112443947B (zh) * 2019-08-30 2021-11-26 青岛海尔空调电子有限公司 同时冷暖多联机空调***的控制方法
AT525349B1 (de) * 2022-03-24 2023-03-15 Ochsner Waermepumpen Gmbh Anlage zur häuslichen Wärmeversorgung
KR20240061047A (ko) * 2022-10-31 2024-05-08 엘지전자 주식회사 공기조화기

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6361844A (ja) * 1986-09-02 1988-03-18 松下冷機株式会社 マルチ方式空気調和機
GB2215867B (en) * 1988-02-09 1992-09-02 Toshiba Kk Air conditioner system with control for optimum refrigerant temperature
JP3205989B2 (ja) * 1988-09-22 2001-09-04 日本電気株式会社 情報処理システム
GB2230873B (en) * 1989-02-27 1993-10-06 Toshiba Kk Multi-system air conditioning machine
JPH02223755A (ja) * 1989-02-27 1990-09-06 Toshiba Corp 空気調和機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800623B1 (ko) * 2001-05-18 2008-02-05 주식회사 엘지이아이 공기조화기의 운전제어방법

Also Published As

Publication number Publication date
JP2909190B2 (ja) 1999-06-23
GB9122980D0 (en) 1991-12-18
US5263333A (en) 1993-11-23
GB2251959B (en) 1994-10-12
KR920010230A (ko) 1992-06-26
JPH04169755A (ja) 1992-06-17
GB2251959A (en) 1992-07-22

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