WO2008102748A1 - Refrigeration device - Google Patents

Refrigeration device Download PDF

Info

Publication number
WO2008102748A1
WO2008102748A1 PCT/JP2008/052702 JP2008052702W WO2008102748A1 WO 2008102748 A1 WO2008102748 A1 WO 2008102748A1 JP 2008052702 W JP2008052702 W JP 2008052702W WO 2008102748 A1 WO2008102748 A1 WO 2008102748A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
refrigerant
stopped
air conditioner
refrigerating machine
Prior art date
Application number
PCT/JP2008/052702
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshio Ueno
Shuji Fujimoto
Manabu Yoshimi
Atsushi Yoshimi
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.
Publication of WO2008102748A1 publication Critical patent/WO2008102748A1/en

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
    • 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
    • F25B2313/027—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
    • F25B2400/01—Heaters
    • 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
    • F25B2500/27—Problems to be solved characterised by the stop of the refrigeration cycle

Abstract

A refrigeration device using refrigerating machine oil not immiscible with refrigerant and having a higher density than the refrigerant, in which electric power consumption while a compressor is stopped is suppressed. An air conditioner (1) has a compressor (21), a heat source-side heat exchanger (23), an expansion mechanism (24), a utilization-side heat exchanger (41), a refrigerant circuit (10) in which refrigerating machine oil immiscible with refrigerant and having a higher density than the refrigerant is sealed, and a crankcase heater (9) for heating that portion of the compressor (21) which is near the oil level (U). Before the compressor is stopped, the air conditioner (1) performs oil recovery operation for returning refrigerating machine oil distributed in the refrigerant circuit (10), and when the compressor is stopped, the air conditioner (1) activates the crankcase heater (9).
PCT/JP2008/052702 2007-02-23 2008-02-19 Refrigeration device WO2008102748A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-044229 2007-02-23
JP2007044229A JP2008209036A (en) 2007-02-23 2007-02-23 Refrigeration device

Publications (1)

Publication Number Publication Date
WO2008102748A1 true WO2008102748A1 (en) 2008-08-28

Family

ID=39710025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052702 WO2008102748A1 (en) 2007-02-23 2008-02-19 Refrigeration device

Country Status (2)

Country Link
JP (1) JP2008209036A (en)
WO (1) WO2008102748A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013114461A1 (en) * 2012-02-02 2015-05-11 三菱電機株式会社 Air conditioner and air conditioner for railway vehicles
CN108253674A (en) * 2017-12-08 2018-07-06 上海三菱电机·上菱空调机电器有限公司 The switching method and system of refrigerant control are carried out by coolant piping length

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5611179B2 (en) * 2011-11-28 2014-10-22 三菱電機株式会社 Air conditioner
WO2013088541A1 (en) * 2011-12-14 2013-06-20 三菱電機株式会社 Heat pump device, and air conditioner, heat pump/hot-water supply machine, refrigerator, and freezer equipped with same
US9181939B2 (en) * 2012-11-16 2015-11-10 Emerson Climate Technologies, Inc. Compressor crankcase heating control systems and methods
US9353738B2 (en) 2013-09-19 2016-05-31 Emerson Climate Technologies, Inc. Compressor crankcase heating control systems and methods
US11486620B2 (en) 2017-01-25 2022-11-01 Mitsubishi Electric Corporation Refrigeration cycle apparatus
WO2019106795A1 (en) * 2017-11-30 2019-06-06 三菱電機株式会社 Refrigeration cycle device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0626716A (en) * 1992-04-21 1994-02-04 Daikin Ind Ltd Operation control device for air conditioner
JPH08193759A (en) * 1995-01-17 1996-07-30 Matsushita Electric Ind Co Ltd Control device for freezer with freezer oil non-compatible with refrigerant
JP2005024168A (en) * 2003-07-02 2005-01-27 Sanyo Electric Co Ltd Air conditioner and method of collecting refrigerating machine oil of air conditioner
JP2006283616A (en) * 2005-03-31 2006-10-19 Daikin Ind Ltd Compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503633B2 (en) * 1989-02-28 1996-06-05 ダイキン工業株式会社 Refrigeration system operation controller
JP3286817B2 (en) * 1993-01-28 2002-05-27 松下電器産業株式会社 Multi-room air conditioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0626716A (en) * 1992-04-21 1994-02-04 Daikin Ind Ltd Operation control device for air conditioner
JPH08193759A (en) * 1995-01-17 1996-07-30 Matsushita Electric Ind Co Ltd Control device for freezer with freezer oil non-compatible with refrigerant
JP2005024168A (en) * 2003-07-02 2005-01-27 Sanyo Electric Co Ltd Air conditioner and method of collecting refrigerating machine oil of air conditioner
JP2006283616A (en) * 2005-03-31 2006-10-19 Daikin Ind Ltd Compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013114461A1 (en) * 2012-02-02 2015-05-11 三菱電機株式会社 Air conditioner and air conditioner for railway vehicles
US9796398B2 (en) 2012-02-02 2017-10-24 Mitsubishi Electric Corporation Air-conditioning apparatus and railway vehicle air-conditioning apparatus
CN108253674A (en) * 2017-12-08 2018-07-06 上海三菱电机·上菱空调机电器有限公司 The switching method and system of refrigerant control are carried out by coolant piping length
CN108253674B (en) * 2017-12-08 2020-11-20 上海三菱电机·上菱空调机电器有限公司 Switching method and system for controlling refrigerant according to length of refrigerant piping

Also Published As

Publication number Publication date
JP2008209036A (en) 2008-09-11

Similar Documents

Publication Publication Date Title
WO2008102748A1 (en) Refrigeration device
WO2009040997A1 (en) Refrigeration device
EP1826510A3 (en) Refrigeration cycle device
WO2008146709A1 (en) Refrigeration cycle device
WO2006019553A3 (en) Flash tank for heat pump in heating and cooling modes of operation
SE0502008L (en) Air conditioning device
EP2381180A3 (en) Heat pump type hot water supply apparatus
EP1577621A3 (en) Refrigerating machine
EP2310770A4 (en) Heat pump with microchannel heat exchangers as both outdoor and reheat heat exchangers
EP1610076A3 (en) Cooling cycle apparatus and method of operating the same
EP2677252A1 (en) Refrigerator
WO2007115876A3 (en) Refrigeration device comprising a defrost heater
EP1577620A3 (en) Refrigerating machine
WO2012072693A3 (en) Method of operating a heat pump dryer and heat pump dryer
EP2189740A3 (en) Cooling system with a unit for determining the amount of frost and method of controlling such a system
EP1475585A3 (en) Air conditioner and outdoor unit therefor
WO2006039066A3 (en) Charge management for 100% heat recovery units
TW200732610A (en) Dual temperature refrigeration circuit
WO2009047067A3 (en) Refrigeration device with a holder for a section of a refrigerant line
EP1473526A3 (en) Air conditioner and outdoor unit therefor
EP2428754A3 (en) Idle defrosting operation determining device for air conditioning apparatus
EP1674807A3 (en) Air conditioner
EP1329675A3 (en) Refrigerating cycle of air-conditioner
CN104456775B (en) A kind of method and air conditioner for improving heating capacity in air conditioner chamber
CN102564014A (en) Defroster of refrigerator

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08711526

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08711526

Country of ref document: EP

Kind code of ref document: A1