US20110232325A1 - Refrigerating apparatus - Google Patents

Refrigerating apparatus Download PDF

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Publication number
US20110232325A1
US20110232325A1 US13/132,836 US200913132836A US2011232325A1 US 20110232325 A1 US20110232325 A1 US 20110232325A1 US 200913132836 A US200913132836 A US 200913132836A US 2011232325 A1 US2011232325 A1 US 2011232325A1
Authority
US
United States
Prior art keywords
refrigerant
pressure
compression mechanism
compression
heat exchanger
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.)
Abandoned
Application number
US13/132,836
Other languages
English (en)
Inventor
Shuji Furui
Kazuhiro Furusho
Michio Moriwaki
Ikuhiro Iwata
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Assigned to DAIKIN INDUSTRIES, LTD. reassignment DAIKIN INDUSTRIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MORIWAKI, MICHIO, FURUSHO, KAZUHIRO, FURUI, SHUJI, IWATA, IKUHIRO
Publication of US20110232325A1 publication Critical patent/US20110232325A1/en
Abandoned 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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • 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
    • F25B2313/0272—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using bridge circuits of one-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
    • 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
    • F25B2400/07—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
    • 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
    • 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
    • F25B2400/23—Separators

Definitions

  • a greater mass flow rate of refrigerant in the condenser results in a greater amount of heat released from refrigerant (i.e., a heat dissipation amount of refrigerant) in the condenser.
  • a mass flow rate of intermediate-pressure gas refrigerant supplied to the compressor is increased, the mass flow rate of refrigerant in the condenser can be increased without increasing a mass flow rate of low-pressure refrigerant sucked into the compressor from the evaporator.
  • the pressure of the intermediate-pressure gas refrigerant may be increased to increase the density of the intermediate-pressure gas refrigerant flowing into the compression chamber.
  • the first expansion valve ( 37 ), the first gas-liquid separator ( 36 ), the second expansion valve ( 47 ), and the second gas-liquid separator ( 46 ) are provided in the enthalpy reducing unit ( 20 ).
  • the first expansion valve ( 37 ), the first gas-liquid separator ( 36 ), the second expansion valve ( 47 ), and the second gas-liquid separator ( 46 ) are arranged in this order from the radiator to the evaporator.
  • a three-stage compression refrigeration cycle is performed when only a low COP (coefficient of performance) can be obtained in a two-stage compression refrigerant cycle or a single-stage compression refrigeration cycle due to a large difference between low and high pressure levels of the refrigeration cycle.
  • the “three-stage compression refrigeration cycle is performed only for the purpose of processing the first and second intermediate-pressure gas refrigerants generated in the enthalpy reducing unit ( 20 ) even through the difference between the low and high pressure levels of the refrigeration cycle is not so large.” Consequently, the problems such as the increase in mechanical loss and the increase in manufacturing cost due to the increase in the number of compression mechanisms can be solved.
  • the high-pressure refrigerant flowing into the second branched pipe ( 43 ) is expanded into second intermediate-pressure refrigerant when passing through the second expansion valve ( 44 ), and then flows into the intermediate-pressure flow path ( 32 ) of the second heat exchanger ( 40 ).
  • the refrigerant which flows into the second compression chamber ( 95 ) in the state at the point A and is being compressed, and the second intermediate-pressure gas refrigerant in the state at the point J, which flows into the second compression chamber ( 95 ) through the second injection port ( 99 ) are mixed together, and the refrigerant mixture is compressed into the refrigerant in the state at the point D.
  • a refrigeration cycle performed in the refrigerant circuit ( 5 ) of the present embodiment will be described. Differences between such a refrigeration cycle and the refrigeration cycle performed in the refrigerant circuit ( 5 ) of the first embodiment will be described below.
  • an “evaporator” means either one of an outdoor heat exchanger ( 12 ) and an indoor heat exchanger ( 14 ), which is operated as an evaporator
  • a “condenser” means either one of the outdoor heat exchanger ( 12 ) and the indoor heat exchanger ( 14 ), which is operated as a condenser.
  • the first flat pipe ( 101 ) and the fourth flat pipe ( 104 ) are stacked so that axial directions of the first flat pipe ( 101 ) and the fourth flat pipe ( 104 ) are parallel to each other, and flat portions of outer surfaces of the first flat pipe ( 101 ) and the fourth flat pipe ( 104 ) closely contact each other.
  • the second flat pipe ( 102 ) and the third flat pipe ( 103 ) are stacked so that axial directions of the second flat pipe ( 102 ) and the third flat pipe ( 103 ) are parallel to each other, and flat portions of outer surfaces of the second flat pipe ( 102 ) and the third flat pipe ( 103 ) closely contact each other.
  • first flat pipe ( 101 ) and the fourth flat pipe ( 104 ) are bonded together with the first flat pipe ( 101 ) and the fourth flat pipe ( 104 ) being stacked in the heat exchange member ( 100 ), heat is exchanged between refrigerant flowing through the high-pressure flow path ( 31 ) and refrigerant flowing through the intermediate-pressure flow path ( 32 ).
  • both of the discharge pipe ( 52 a ) of the first compressor ( 50 a ) and the discharge pipe ( 52 b ) of the second compressor ( 50 b ) are connected to the first port of the four-way valve ( 11 ).
  • both of the first suction pipe ( 53 ) of the first compressor ( 50 a ) and the second suction pipe ( 54 ) of the second compressor ( 50 b ) are connected to the second port of the four-way valve ( 11 ).
  • the first injection pipe ( 35 ) is connected to the first injection port ( 89 ) of the first compression mechanism ( 71 ) provided in the first compressor ( 50 a ).
  • the second injection pipe ( 45 ) is connected to the second injection port ( 99 ) of the second compression mechanism ( 72 ) provided in the second compressor ( 50 b ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
US13/132,836 2008-12-05 2009-12-02 Refrigerating apparatus Abandoned US20110232325A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2008311505 2008-12-05
JP2008-311505 2008-12-05
JP2009-227151 2009-09-30
JP2009227151A JP4569708B2 (ja) 2008-12-05 2009-09-30 冷凍装置
PCT/JP2009/006561 WO2010064427A1 (ja) 2008-12-05 2009-12-02 冷凍装置

Publications (1)

Publication Number Publication Date
US20110232325A1 true US20110232325A1 (en) 2011-09-29

Family

ID=42233085

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/132,836 Abandoned US20110232325A1 (en) 2008-12-05 2009-12-02 Refrigerating apparatus

Country Status (7)

Country Link
US (1) US20110232325A1 (de)
EP (1) EP2357427A4 (de)
JP (1) JP4569708B2 (de)
KR (1) KR101254433B1 (de)
CN (1) CN102227599B (de)
AU (1) AU2009323588B2 (de)
WO (1) WO2010064427A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140305150A1 (en) * 2013-04-15 2014-10-16 Lg Electronics Inc. Air conditioner and method for controlling the same
US20150168037A1 (en) * 2012-09-07 2015-06-18 Mitsubishi Electric Corporation Air-conditioning apparatus
US20150267954A1 (en) * 2014-03-20 2015-09-24 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US20170082333A1 (en) * 2014-03-17 2017-03-23 Mitsubishi Electric Corporation Refrigeration cycle device
EP3018430A4 (de) * 2013-07-02 2017-04-12 Mitsubishi Electric Corporation Kältemittelkreislauf und klimaanlage

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101252173B1 (ko) 2010-11-23 2013-04-05 엘지전자 주식회사 히트 펌프 및 그 제어방법
KR101249898B1 (ko) * 2011-01-21 2013-04-09 엘지전자 주식회사 히트 펌프
JP6176470B2 (ja) * 2011-02-04 2017-08-09 三菱重工サーマルシステムズ株式会社 冷凍機
CN104101125B (zh) * 2013-04-09 2016-10-05 珠海格力电器股份有限公司 空调器
KR102122252B1 (ko) * 2013-04-15 2020-06-12 엘지전자 주식회사 공기조화기
KR102207263B1 (ko) * 2014-04-29 2021-01-25 엘지전자 주식회사 공기 조화기 및 그 제어방법
JP6038402B2 (ja) * 2014-05-15 2016-12-07 三菱電機株式会社 蒸気圧縮式冷凍サイクル
US10145587B2 (en) 2014-12-11 2018-12-04 Angelantoni Test Technologies S.R.L. Refrigeration device
KR101702736B1 (ko) 2015-01-12 2017-02-03 엘지전자 주식회사 공기 조화기
CN105444453B (zh) * 2015-12-18 2018-01-23 珠海格力电器股份有限公司 一种双温制冷及制热系统
CN106152606B (zh) * 2016-08-31 2018-10-02 广东美芝制冷设备有限公司 制冷剂的换向装置及具有其的制冷系统
CN106382760B (zh) * 2016-08-31 2022-08-12 广东美芝制冷设备有限公司 压缩机及具有其的制冷系统
CN106225295A (zh) * 2016-08-31 2016-12-14 广东美芝制冷设备有限公司 制冷系统
CN106705475B (zh) * 2016-11-30 2019-06-14 广东美芝制冷设备有限公司 制冷系统及制冷系统的控制方法
CN107763875B (zh) * 2017-10-25 2020-01-07 广东美的暖通设备有限公司 空调系统
DK4030122T3 (da) * 2019-09-09 2023-07-24 Mitsubishi Electric Corp Udendørsenhed og kølekredsløbsapparat
US20220325924A1 (en) * 2019-10-28 2022-10-13 Gd Midea Air-Conditioning Equipment Co., Ltd. Air conditioner
JP7092169B2 (ja) * 2020-08-31 2022-06-28 株式会社富士通ゼネラル 冷凍サイクル装置

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US6694750B1 (en) * 2002-08-21 2004-02-24 Carrier Corporation Refrigeration system employing multiple economizer circuits
US20070148026A1 (en) * 2003-12-26 2007-06-28 Hirofumi Higashi Compressor
WO2008082408A1 (en) * 2006-12-29 2008-07-10 Carrier Corporation Economizer heat exchanger
WO2008130359A1 (en) * 2007-04-24 2008-10-30 Carrier Corporation Refrigerant vapor compression system with dual economizer circuits
EP1990587A1 (de) * 2006-02-28 2008-11-12 Daikin Industries, Ltd. Kühlvorrichtung

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JP2007232280A (ja) * 2006-03-01 2007-09-13 Daikin Ind Ltd 冷凍装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4780714A (en) * 1985-07-19 1988-10-25 Siemens Aktiengesellschaft Selective voltage supply system for data network distributor
US20020050149A1 (en) * 2000-10-13 2002-05-02 Mitsubishi Heavy Industries, Ltd. Multistage compression refrigerating machine for supplying refrigerant from intercooler to cool rotating machine and lubricating oil
US6694750B1 (en) * 2002-08-21 2004-02-24 Carrier Corporation Refrigeration system employing multiple economizer circuits
US20070148026A1 (en) * 2003-12-26 2007-06-28 Hirofumi Higashi Compressor
EP1990587A1 (de) * 2006-02-28 2008-11-12 Daikin Industries, Ltd. Kühlvorrichtung
US20090044564A1 (en) * 2006-02-28 2009-02-19 Masakazu Okamoto Refrigerating Apparatus
WO2008082408A1 (en) * 2006-12-29 2008-07-10 Carrier Corporation Economizer heat exchanger
WO2008130359A1 (en) * 2007-04-24 2008-10-30 Carrier Corporation Refrigerant vapor compression system with dual economizer circuits

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150168037A1 (en) * 2012-09-07 2015-06-18 Mitsubishi Electric Corporation Air-conditioning apparatus
US9903625B2 (en) * 2012-09-07 2018-02-27 Mitsubishi Electric Corporation Air-conditioning apparatus
US20140305150A1 (en) * 2013-04-15 2014-10-16 Lg Electronics Inc. Air conditioner and method for controlling the same
US9989281B2 (en) * 2013-04-15 2018-06-05 Lg Electronics Inc. Air conditioner and method for controlling the same
EP3018430A4 (de) * 2013-07-02 2017-04-12 Mitsubishi Electric Corporation Kältemittelkreislauf und klimaanlage
US10429109B2 (en) 2013-07-02 2019-10-01 Mitsubishi Electric Corporation Refrigerant circuit and air-conditioning apparatus
US20170082333A1 (en) * 2014-03-17 2017-03-23 Mitsubishi Electric Corporation Refrigeration cycle device
US20150267954A1 (en) * 2014-03-20 2015-09-24 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US10436487B2 (en) * 2014-03-20 2019-10-08 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner

Also Published As

Publication number Publication date
CN102227599B (zh) 2014-03-12
WO2010064427A1 (ja) 2010-06-10
AU2009323588B2 (en) 2013-03-21
AU2009323588A1 (en) 2011-06-30
KR20110090998A (ko) 2011-08-10
CN102227599A (zh) 2011-10-26
JP4569708B2 (ja) 2010-10-27
KR101254433B1 (ko) 2013-04-12
EP2357427A4 (de) 2016-04-27
EP2357427A1 (de) 2011-08-17
JP2010156536A (ja) 2010-07-15

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Owner name: DAIKIN INDUSTRIES, LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FURUI, SHUJI;FURUSHO, KAZUHIRO;MORIWAKI, MICHIO;AND OTHERS;SIGNING DATES FROM 20100118 TO 20100125;REEL/FRAME:026396/0309

STCB Information on status: application discontinuation

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