EP2863151A3 - Two-stage compression cycle - Google Patents

Two-stage compression cycle Download PDF

Info

Publication number
EP2863151A3
EP2863151A3 EP14188877.6A EP14188877A EP2863151A3 EP 2863151 A3 EP2863151 A3 EP 2863151A3 EP 14188877 A EP14188877 A EP 14188877A EP 2863151 A3 EP2863151 A3 EP 2863151A3
Authority
EP
European Patent Office
Prior art keywords
stage compressor
oil
stage
stage compression
returning circuit
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
EP14188877.6A
Other languages
German (de)
French (fr)
Other versions
EP2863151A2 (en
EP2863151B1 (en
Inventor
Yoshiaki Miyamoto
Yoshiyuki Kimata
Youhei Hotta
Hajime Sato
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 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP2863151A2 publication Critical patent/EP2863151A2/en
Publication of EP2863151A3 publication Critical patent/EP2863151A3/en
Application granted granted Critical
Publication of EP2863151B1 publication Critical patent/EP2863151B1/en
Active 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
    • 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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line 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
    • 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
    • F25B2400/072—Intercoolers therefor
    • 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

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)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

An object is to provide a two-stage compression system that has no need for oil equalization between a lower-stage compressor and a higher-stage compressor, which makes it possible to simplify the configuration, and that makes it possible to reliably ensure appropriate oil levels in both the lower-stage compressor and the higher-stage compressor. In a two-stage compression system (1) in which a lower-stage compressor (2) and a higher-stage compressor (3) are disposed in series, and an oil separator (7) is provided on a discharge side of the higher-stage compressor (3), a first oil-returning circuit (11) and a second oil-returning circuit (12), which are independent of each other, are provided so as to be connected between the oil separator (7) and the lower-stage compressor (2) and the higher-stage compressor (3), and V1 > V2 is satisfied, assuming that the volume of oil returned to the lower-stage compressor (2) from the first oil-returning circuit (11) is V1, and the volume of oil returned to the higher-stage compressor (3) from the second oil-returning circuit (12) is V2.
EP14188877.6A 2013-10-18 2014-10-14 Two-stage compression cycle Active EP2863151B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013216944A JP6301101B2 (en) 2013-10-18 2013-10-18 Two-stage compression cycle

Publications (3)

Publication Number Publication Date
EP2863151A2 EP2863151A2 (en) 2015-04-22
EP2863151A3 true EP2863151A3 (en) 2015-07-29
EP2863151B1 EP2863151B1 (en) 2019-10-02

Family

ID=51753023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14188877.6A Active EP2863151B1 (en) 2013-10-18 2014-10-14 Two-stage compression cycle

Country Status (2)

Country Link
EP (1) EP2863151B1 (en)
JP (1) JP6301101B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6616224B2 (en) * 2016-03-28 2019-12-04 三菱重工サーマルシステムズ株式会社 Multistage compressor, refrigeration cycle provided with the same, and operation method of multistage compressor
CN105758066A (en) * 2016-04-25 2016-07-13 广东美的暖通设备有限公司 Outdoor unit of variable refrigerant flow air-conditioning system and variable refrigerant flow air-conditioning system
CN106766371B (en) * 2016-11-29 2019-12-10 珠海格力电器股份有限公司 two-stage compressor heat pump and oil return control system and control method thereof
US20180195794A1 (en) * 2017-01-12 2018-07-12 Emerson Climate Technologies, Inc. Diagnostics And Control For Micro Booster Supermarket Refrigeration System
CN108444137B (en) * 2018-03-23 2020-06-26 天津商业大学 Operation control method of two-stage compression heat pump system and heat pump system
JP6773095B2 (en) 2018-09-28 2020-10-21 ダイキン工業株式会社 Multi-stage compression system
US11428226B2 (en) 2018-09-28 2022-08-30 Daikin Industries, Ltd. Multistage compression system
EP3859234A4 (en) 2018-09-28 2021-11-03 Daikin Industries, Ltd. Multistage compression system
JP2024011150A (en) * 2022-07-14 2024-01-25 三菱重工業株式会社 Compressor unit and refrigeration system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434927A (en) * 1972-04-27 1976-05-12 Svenska Rotor Maskiner Ab Refrigeration plants
JPH07260263A (en) * 1994-03-17 1995-10-13 Sanyo Electric Co Ltd Device for two-stage compression refrigeration
JPH08121893A (en) * 1994-10-27 1996-05-17 Hitachi Ltd Heat pump
US20060201171A1 (en) * 2005-03-10 2006-09-14 Sunpower, Inc. Dual mode compressor with automatic compression ratio adjustment for adapting to multiple operating conditions
WO2009105092A1 (en) * 2008-02-19 2009-08-27 Carrier Corporation Refrigerant vapor compression system
WO2009119375A1 (en) * 2008-03-25 2009-10-01 ダイキン工業株式会社 Refrigeration device
JP2010014349A (en) * 2008-07-03 2010-01-21 Mayekawa Mfg Co Ltd Refrigeration cycle and oil-cooled refrigerating machine
EP2339265A2 (en) * 2009-12-25 2011-06-29 Sanyo Electric Co., Ltd. Refrigerating apparatus
DE102010026648A1 (en) * 2010-07-09 2012-01-12 Gea Grasso Gmbh Refrigeration system for cooling a conainer
US20120023978A1 (en) * 2010-07-28 2012-02-02 Chae Sunam Refrigerator and driving method thereof
EP2487437A1 (en) * 2011-02-11 2012-08-15 STIEBEL ELTRON GmbH & Co. KG Heat pump device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223402B2 (en) * 1973-10-12 1977-06-24
JPS6387556A (en) * 1986-09-30 1988-04-18 株式会社東芝 Heat pump device
JPH02264168A (en) * 1989-04-05 1990-10-26 Hitachi Ltd Freezing device
JPH0480555A (en) * 1990-07-19 1992-03-13 Sanyo Electric Co Ltd Refrigerating plant
JPH07190520A (en) * 1993-12-27 1995-07-28 Kobe Steel Ltd Freezer
JP2000346478A (en) * 1999-06-03 2000-12-15 Daikin Ind Ltd Refrigerator
CN101568771A (en) * 2006-12-21 2009-10-28 开利公司 Refrigerant system with intercooler utilized for reheat function

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434927A (en) * 1972-04-27 1976-05-12 Svenska Rotor Maskiner Ab Refrigeration plants
JPH07260263A (en) * 1994-03-17 1995-10-13 Sanyo Electric Co Ltd Device for two-stage compression refrigeration
JPH08121893A (en) * 1994-10-27 1996-05-17 Hitachi Ltd Heat pump
US20060201171A1 (en) * 2005-03-10 2006-09-14 Sunpower, Inc. Dual mode compressor with automatic compression ratio adjustment for adapting to multiple operating conditions
WO2009105092A1 (en) * 2008-02-19 2009-08-27 Carrier Corporation Refrigerant vapor compression system
WO2009119375A1 (en) * 2008-03-25 2009-10-01 ダイキン工業株式会社 Refrigeration device
JP2010014349A (en) * 2008-07-03 2010-01-21 Mayekawa Mfg Co Ltd Refrigeration cycle and oil-cooled refrigerating machine
EP2339265A2 (en) * 2009-12-25 2011-06-29 Sanyo Electric Co., Ltd. Refrigerating apparatus
DE102010026648A1 (en) * 2010-07-09 2012-01-12 Gea Grasso Gmbh Refrigeration system for cooling a conainer
US20120023978A1 (en) * 2010-07-28 2012-02-02 Chae Sunam Refrigerator and driving method thereof
EP2487437A1 (en) * 2011-02-11 2012-08-15 STIEBEL ELTRON GmbH & Co. KG Heat pump device

Also Published As

Publication number Publication date
JP6301101B2 (en) 2018-03-28
JP2015078804A (en) 2015-04-23
EP2863151A2 (en) 2015-04-22
EP2863151B1 (en) 2019-10-02

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