EP2339269A3 - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
EP2339269A3
EP2339269A3 EP10252001A EP10252001A EP2339269A3 EP 2339269 A3 EP2339269 A3 EP 2339269A3 EP 10252001 A EP10252001 A EP 10252001A EP 10252001 A EP10252001 A EP 10252001A EP 2339269 A3 EP2339269 A3 EP 2339269A3
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
double
expansion valve
refrigerant
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
EP10252001A
Other languages
German (de)
French (fr)
Other versions
EP2339269B1 (en
EP2339269A2 (en
Inventor
Shunji Itakura
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Publication of EP2339269A2 publication Critical patent/EP2339269A2/en
Publication of EP2339269A3 publication Critical patent/EP2339269A3/en
Application granted granted Critical
Publication of EP2339269B1 publication Critical patent/EP2339269B1/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
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2400/13—Economisers
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2509—Economiser valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

In an air conditioner having a double-pipe heat exchanger in a refrigerating cycle, the degree of opening of a bypass expansion valve is controlled easily without liquid return to a compressor and without considering the state of a low-pressure two-phase refrigerant in the double-pipe heat exchanger. In the air conditioner including a refrigerating cycle 1A in which a heating expansion valve 51 is provided between the outdoor heat exchanger 30 and the double-pipe heat exchanger 60; a cooling expansion valve 52 is provided between the indoor heat exchanger 40 and the double-pipe heat exchanger 60; and in the double-pipe heat exchanger 60, a high-pressure liquid refrigerant flowing in a liquid-side refrigerant pipe 50 is heat-exchanged with a low-pressure two-phase refrigerant that is formed by decompressing some of the high-pressure liquid refrigerant by a bypass expansion valve 62, a low-pressure refrigerant outflow portion 60a of the double-pipe heat exchanger 60 is connected to a refrigerant pipe portion 50a between the outdoor heat exchanger 30 and the heating expansion valve 51 via a first check valve 71, and is connected to a refrigerant pipe portion 50b between the indoor heat exchanger 40 and the cooling expansion valve 52 via a second check valve 72.
EP10252001.2A 2009-12-25 2010-11-25 Air conditioner Not-in-force EP2339269B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009293650A JP2011133177A (en) 2009-12-25 2009-12-25 Air conditioner

Publications (3)

Publication Number Publication Date
EP2339269A2 EP2339269A2 (en) 2011-06-29
EP2339269A3 true EP2339269A3 (en) 2011-07-13
EP2339269B1 EP2339269B1 (en) 2019-01-23

Family

ID=43873806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10252001.2A Not-in-force EP2339269B1 (en) 2009-12-25 2010-11-25 Air conditioner

Country Status (6)

Country Link
US (1) US20110154847A1 (en)
EP (1) EP2339269B1 (en)
JP (1) JP2011133177A (en)
CN (1) CN102109202B (en)
AU (1) AU2010246508A1 (en)
ES (1) ES2715928T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2884205B1 (en) * 2012-10-18 2017-02-01 Daikin Industries, Ltd. Air conditioner
KR101474356B1 (en) * 2013-07-18 2014-12-19 한국에너지기술연구원 Heat pump system capable of adjusting refrigerant amount of liquid receiver
CN103900222B (en) * 2014-03-07 2017-05-24 广东美的暖通设备有限公司 Method for cooling air conditioner electronic control frequency conversion module and air conditioner
CN104266416B (en) * 2014-09-29 2017-03-15 特灵空调***(中国)有限公司 Multi-connected machine throttling and supercooling controlling organization
CN104534725A (en) * 2015-01-23 2015-04-22 珠海格力电器股份有限公司 Air conditioner
CN106032950A (en) * 2015-03-18 2016-10-19 青岛海尔空调电子有限公司 Air-conditioning system
CN104848579B (en) * 2015-05-05 2017-12-01 广东美的制冷设备有限公司 Air conditioner and its heat-exchange system
JP6350577B2 (en) * 2016-03-31 2018-07-04 ダイキン工業株式会社 Air conditioner
JP6341321B2 (en) * 2016-06-30 2018-06-13 ダイキン工業株式会社 Air conditioner
CN111051793B (en) * 2017-09-07 2022-03-29 三菱电机株式会社 Air conditioning apparatus
JP6863395B2 (en) * 2019-02-18 2021-04-21 ダイキン工業株式会社 Air conditioner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855562A1 (en) * 1996-08-14 1998-07-29 Daikin Industries, Limited Air conditioner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116777U (en) * 1983-01-26 1984-08-07 三菱電機株式会社 Refrigeration equipment
US5253482A (en) * 1992-06-26 1993-10-19 Edi Murway Heat pump control system
JPH09152195A (en) * 1995-11-28 1997-06-10 Sanyo Electric Co Ltd Refrigerating apparatus
KR100496376B1 (en) * 2003-03-31 2005-06-22 한명범 Improvement system of energy efficiency for use in a refrigeration cycle
JP2006023073A (en) 2004-06-11 2006-01-26 Daikin Ind Ltd Air conditioner
CA2626331A1 (en) * 2005-10-18 2007-04-26 Carrier Corporation Economized refrigerant vapor compression system for water heating
JP2008057807A (en) * 2006-08-29 2008-03-13 Samsung Electronics Co Ltd Refrigerating cycle, and air conditioner and refrigerator using the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855562A1 (en) * 1996-08-14 1998-07-29 Daikin Industries, Limited Air conditioner

Also Published As

Publication number Publication date
US20110154847A1 (en) 2011-06-30
EP2339269B1 (en) 2019-01-23
AU2010246508A1 (en) 2011-07-14
ES2715928T3 (en) 2019-06-07
CN102109202A (en) 2011-06-29
JP2011133177A (en) 2011-07-07
CN102109202B (en) 2014-09-03
EP2339269A2 (en) 2011-06-29

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