EP2218984A3 - Air conditioner and method of controlling the same - Google Patents

Air conditioner and method of controlling the same Download PDF

Info

Publication number
EP2218984A3
EP2218984A3 EP10001542A EP10001542A EP2218984A3 EP 2218984 A3 EP2218984 A3 EP 2218984A3 EP 10001542 A EP10001542 A EP 10001542A EP 10001542 A EP10001542 A EP 10001542A EP 2218984 A3 EP2218984 A3 EP 2218984A3
Authority
EP
European Patent Office
Prior art keywords
oil
compressors
air conditioner
oil equalizing
intake pipe
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
EP10001542A
Other languages
German (de)
French (fr)
Other versions
EP2218984B1 (en
EP2218984A2 (en
Inventor
Ho Jong Jeong
Chi Woo Song
Baik Young Chung
Sai Kee Oh
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 EP2218984A2 publication Critical patent/EP2218984A2/en
Publication of EP2218984A3 publication Critical patent/EP2218984A3/en
Application granted granted Critical
Publication of EP2218984B1 publication Critical patent/EP2218984B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating 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
    • 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
    • F25B2313/025—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
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
    • 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
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2105—Oil temperatures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

An air conditioner includes a plurality of compressors (120a, b, c), a common intake pipe (111), and a plurality of oil equalizing pipes (114a, b, c) that connect the compressors (120a, b, c) to the common intake pipe (111) such that oil existing above a reference oil level in the compressors (120a, b, c) can be transferred to the common intake pipe (111). An oil equalizing valve (135a, b, c) provided on at least two of the oil equalizing pipes (114a, b, c) controls oil flowing through the oil equalizing pipes, where at least two of the oil equalizing valves can be opened together during performance of oil equalizing operation such that amounts of the oil in at least two compressors can be equalized.
EP10001542.9A 2009-02-16 2010-02-15 Air conditioner and method of controlling the same Not-in-force EP2218984B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090012519A KR101588204B1 (en) 2009-02-16 2009-02-16 Air conditioner and method for controlling air conditioner

Publications (3)

Publication Number Publication Date
EP2218984A2 EP2218984A2 (en) 2010-08-18
EP2218984A3 true EP2218984A3 (en) 2011-04-06
EP2218984B1 EP2218984B1 (en) 2015-12-16

Family

ID=42199001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10001542.9A Not-in-force EP2218984B1 (en) 2009-02-16 2010-02-15 Air conditioner and method of controlling the same

Country Status (3)

Country Link
US (1) US20100206000A1 (en)
EP (1) EP2218984B1 (en)
KR (1) KR101588204B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101259620B1 (en) * 2010-11-17 2013-04-29 엘지전자 주식회사 Air conditioner
KR101977984B1 (en) * 2012-07-11 2019-05-14 엘지전자 주식회사 Air conditioner and method for controlling the same
CN103776200B (en) * 2012-10-25 2016-08-24 珠海格力电器股份有限公司 Compressor system and control method of compressor system
CN103528273A (en) * 2013-03-14 2014-01-22 广东美芝制冷设备有限公司 Refrigerating cycle device
CN103791658B (en) * 2014-01-21 2015-12-02 宁波奥克斯电气有限公司 The oil mass regulate and control method of VRF Air Conditioning System
CN103900291A (en) * 2014-04-14 2014-07-02 珠海格力电器股份有限公司 Air conditioner compression module and module unit and air conditioner comprising same
CN105588353A (en) * 2014-12-05 2016-05-18 海信（山东）空调有限公司 refrigeration air conditioning system
US10641268B2 (en) 2015-08-11 2020-05-05 Emerson Climate Technologies, Inc. Multiple compressor configuration with oil-balancing system
CN107642921A (en) * 2016-07-22 2018-01-30 约克（无锡）空调冷冻设备有限公司 Oil balancing system and there is its multiscrew compressor parallel refrigeration unit
CN108072204B (en) * 2017-12-13 2020-07-03 宁波奥克斯电气股份有限公司 Multi-connected engine oil balance control method and device
US11460224B2 (en) * 2018-10-31 2022-10-04 Emerson Climate Technologies, Inc. Oil control for climate-control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367259A1 (en) * 2001-02-15 2003-12-03 Toshiba Carrier Corporation Freezer
EP1677057A2 (en) * 2004-12-28 2006-07-05 Samsung Electronics Co., Ltd. Heat pump with compressor oil distribution

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383802A (en) * 1981-07-06 1983-05-17 Dunham-Bush, Inc. Oil equalization system for parallel connected compressors
JP3413044B2 (en) * 1997-02-20 2003-06-03 株式会社日立製作所 Air conditioner
JP2001032772A (en) * 1999-07-19 2001-02-06 Daikin Ind Ltd Compressor, and freezing device
US6343482B1 (en) * 2000-10-31 2002-02-05 Takeshi Endo Heat pump type conditioner and exterior unit
JP4300804B2 (en) * 2002-06-11 2009-07-22 ダイキン工業株式会社 Oil leveling circuit of compression mechanism, heat source unit of refrigeration apparatus, and refrigeration apparatus including the same
KR100556773B1 (en) * 2003-11-05 2006-03-10 엘지전자 주식회사 Oil return apparatus for accumulator of air conditioner and oil return method thereof
KR100592955B1 (en) * 2005-01-10 2006-06-26 삼성전자주식회사 Refrigerating system and control method for the same
US8359873B2 (en) * 2006-08-22 2013-01-29 Carrier Corporation Oil return in refrigerant system
KR20090041846A (en) * 2007-10-25 2009-04-29 엘지전자 주식회사 Air conditioner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367259A1 (en) * 2001-02-15 2003-12-03 Toshiba Carrier Corporation Freezer
EP1677057A2 (en) * 2004-12-28 2006-07-05 Samsung Electronics Co., Ltd. Heat pump with compressor oil distribution

Also Published As

Publication number Publication date
EP2218984B1 (en) 2015-12-16
KR101588204B1 (en) 2016-01-25
EP2218984A2 (en) 2010-08-18
KR20100093370A (en) 2010-08-25
US20100206000A1 (en) 2010-08-19

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