EP2562493B1 - Air conditioner refrigerant filling method - Google Patents

Air conditioner refrigerant filling method Download PDF

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Publication number
EP2562493B1
EP2562493B1 EP11771899.9A EP11771899A EP2562493B1 EP 2562493 B1 EP2562493 B1 EP 2562493B1 EP 11771899 A EP11771899 A EP 11771899A EP 2562493 B1 EP2562493 B1 EP 2562493B1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
pipe
amount
pipes
indoor units
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.)
Active
Application number
EP11771899.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2562493A4 (en
EP2562493A1 (en
Inventor
Takahiro Kato
Atsushi Enya
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.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems 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.)
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Publication date
Application filed by Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Publication of EP2562493A1 publication Critical patent/EP2562493A1/en
Publication of EP2562493A4 publication Critical patent/EP2562493A4/en
Application granted granted Critical
Publication of EP2562493B1 publication Critical patent/EP2562493B1/en
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Anticipated expiration legal-status Critical

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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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/001—Charging refrigerant to a 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • 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
    • F25B2700/04—Refrigerant level

Definitions

  • an air conditioner having an automatic refrigerant injection function that enables a specified amount of refrigerant to be automatically injected into a refrigerant circuit and an air conditioner that enables refrigerant to be automatically injected into a refrigerant circuit while eliminating the work of inputting information about crossover pipes and that enables precise determination of the adequacy of the amount of the refrigerant have been proposed (for example, see PTLs 1 to 3).
  • the minimum required refrigerant amount is calculated on the basis thereof, the resulting amount of refrigerant is additionally injected in advance, and then the refrigerant is automatically injected by the automatic refrigerant injection function until the specified injection amount is reached, the specified amount of refrigerant, i.e., the amount that eventually needs to be injected, can be correctly injected without any excess or shortfall.
  • the amount of refrigerant is calculated by assuming the pipe diameter of the horizontal pipe and the pipe diameter of the vertical pipe to the position of the first branched portion to be the diameter determined from the model of the outdoor unit or from the measurement value of the refrigerant pipe closest thereto. Therefore, even if the pipe diameter of the horizontal pipe and the pipe diameter of the vertical pipe to the position of the first branched portion are unknown, because the horizontal pipe and the vertical pipe are so-called main pipes, it can be reliably assumed that the refrigerant pipe closest to the outdoor unit is extended and serves as these pipes. Accordingly, by assuming the pipe diameter determined from the model of the outdoor unit or from the measurement value of the refrigerant pipe closest thereto to be the pipe diameters of the horizontal pipe and the vertical pipe, the minimum required refrigerant amount can be precisely calculated.
  • the amount of refrigerant may be calculated by assuming the pipe diameters of the branch pipes and/or the pipe diameter of the vertical pipe beyond the first branched portion to be the diameters determined from the models of the indoor units located farthest from the vertical pipe or from the measurement values of the refrigerant pipes closest thereto.
  • the amount of refrigerant may be calculated by assuming the pipe diameters of the branch pipes and/or the pipe diameter of the vertical pipe beyond the first branched portion to be the diameters determined from the models of the indoor units located farthest from the vertical pipe or from the measurement values of the refrigerant pipes closest thereto, even if the pipe diameters of the branch pipes and/or the pipe diameter of the vertical pipe beyond the first branched portion are unknown, the pipe diameters of the branch pipes and/or the pipe diameter of the vertical pipe can be reliably assumed to be, at least, those of the model of the indoor units located farthest from the vertical pipe or the pipe diameter of the refrigerant pipes connected to such indoor units.
  • the specifications (the gas-side pipe diameter (mm), the liquid-side pipe diameter (mm), and their pipe length (m)) of the refrigerant pipes (crossover pipes) 2 constituting this refrigerant circuit 3 are as follows:
  • a horizontal pipe 2A extending horizontally from the outdoor unit 10, installed on the roof of the building 40 or the like, along the roof has a gas-side pipe diameter of 28.58 mm, a liquid-side pipe diameter of 12.7 mm, and a pipe length of 10 m
  • a vertical pipe 2B extending from the horizontal pipe 2A to a ceiling on the second floor in the height direction of the building 40 has a gas-side pipe diameter of 28.58 mm, a liquid-side pipe diameter of 12.7 mm, and a pipe length of 20 m
  • a branch pipe 2C branched off from the vertical pipe 2B toward the indoor units 11 to 13 installed on the ceiling on the second floor has a gas-side pipe diameter of 19.05 mm, a liquid-side pipe diameter of
  • Steps S2 and S4 (after acquisition of the diagram) are intended for the people who can perfectly estimate the pipe size, length, etc.; the amount of refrigerant to be additionally injected is calculated on the basis thereof, and the specified amount of refrigerant is additionally charged (injected).
  • step S5 is intended for people who have not yet determined or cannot determine the pipe size, length, etc.; the pipe size, pipe length, and the like are estimated using the method described below, the minimum required refrigerant amount is calculated on the basis thereof, and the resulting amount of refrigerant is additionally charged.
  • the procedure proceeds to step S6, where an automatic operation is performed to additionally inject the refrigerant until the specified amount is reached, using the automatic refrigerant injection function of the air conditioner 1 described below.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
EP11771899.9A 2010-04-21 2011-04-12 Air conditioner refrigerant filling method Active EP2562493B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010097957A JP5705453B2 (ja) 2010-04-21 2010-04-21 空気調和装置の冷媒充填方法
PCT/JP2011/059061 WO2011132564A1 (ja) 2010-04-21 2011-04-12 空気調和装置の冷媒充填方法

Publications (3)

Publication Number Publication Date
EP2562493A1 EP2562493A1 (en) 2013-02-27
EP2562493A4 EP2562493A4 (en) 2016-09-14
EP2562493B1 true EP2562493B1 (en) 2018-03-28

Family

ID=44834090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11771899.9A Active EP2562493B1 (en) 2010-04-21 2011-04-12 Air conditioner refrigerant filling method

Country Status (4)

Country Link
EP (1) EP2562493B1 (ja)
JP (1) JP5705453B2 (ja)
CN (1) CN102695930B (ja)
WO (1) WO2011132564A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5642098B2 (ja) * 2012-02-21 2014-12-17 三菱電機株式会社 冷媒量推定装置及び冷媒量推定方法
CN104748287A (zh) * 2013-12-25 2015-07-01 珠海格力电器股份有限公司 选型软件构建及计算管长的方法及系统和中央空调器
CN104990320A (zh) * 2015-07-16 2015-10-21 广东美的暖通设备有限公司 一种冷媒自动充注的控制方法及系统
CN106766304B (zh) * 2016-12-22 2019-04-26 中科美菱低温科技股份有限公司 一种分离式低温制冷设备
JP2019011899A (ja) * 2017-06-30 2019-01-24 株式会社富士通ゼネラル 空気調和装置
CN113932503B (zh) * 2021-11-24 2023-04-07 宁波奥克斯电气股份有限公司 一种制冷剂充注装置及控制方法
CN114674095B (zh) * 2022-03-16 2024-04-23 青岛海尔空调器有限总公司 空调器、用于控制空调冷媒的方法、装置和存储介质

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821675A (ja) * 1994-07-06 1996-01-23 Hitachi Ltd 空気調和機およびその冷媒量判定方法
JPH08200905A (ja) * 1995-01-20 1996-08-09 Hitachi Ltd 冷媒量の指示装置
JPH1163745A (ja) * 1997-08-08 1999-03-05 Hitachi Ltd 空気調和機の冷媒封入量指示装置及び監視装置
JP2002350014A (ja) * 2001-05-22 2002-12-04 Daikin Ind Ltd 冷凍装置
JP3719246B2 (ja) * 2003-01-10 2005-11-24 ダイキン工業株式会社 冷凍装置及び冷凍装置の冷媒量検出方法
JP4155313B2 (ja) * 2006-06-26 2008-09-24 ダイキン工業株式会社 空気調和装置
JP2008111584A (ja) * 2006-10-30 2008-05-15 Daikin Ind Ltd 空気調和装置
KR100850952B1 (ko) * 2007-03-14 2008-08-08 엘지전자 주식회사 공기 조화기, 이의 냉매관 길이 및 적정 냉매량 산정 방법
JP4902866B2 (ja) * 2007-03-23 2012-03-21 三菱電機株式会社 冷媒充填方法
JP5326488B2 (ja) * 2008-02-29 2013-10-30 ダイキン工業株式会社 空気調和装置
KR101250243B1 (ko) * 2008-09-05 2013-04-04 엘지전자 주식회사 배관 거리 감지 장치 및 감지 방법
US8666684B2 (en) * 2010-03-10 2014-03-04 Lg Electronics Inc. Air conditioning system and method for calculating amount of filling refrigerants of the same

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
CN102695930B (zh) 2016-04-13
WO2011132564A1 (ja) 2011-10-27
JP2011226715A (ja) 2011-11-10
EP2562493A4 (en) 2016-09-14
EP2562493A1 (en) 2013-02-27
CN102695930A (zh) 2012-09-26
JP5705453B2 (ja) 2015-04-22

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