EP0851183A3 - Refrigeration system - Google Patents

Refrigeration system Download PDF

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Publication number
EP0851183A3
EP0851183A3 EP97122135A EP97122135A EP0851183A3 EP 0851183 A3 EP0851183 A3 EP 0851183A3 EP 97122135 A EP97122135 A EP 97122135A EP 97122135 A EP97122135 A EP 97122135A EP 0851183 A3 EP0851183 A3 EP 0851183A3
Authority
EP
European Patent Office
Prior art keywords
refrigerant
iii
refrigeration system
circuits
refrigerant 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.)
Withdrawn
Application number
EP97122135A
Other languages
German (de)
French (fr)
Other versions
EP0851183A2 (en
Inventor
Burkhard Rüssmann
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.)
L & R Kaltetechnik GmbH
Original Assignee
L & R Kaltetechnik GmbH
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 L & R Kaltetechnik GmbH filed Critical L & R Kaltetechnik GmbH
Publication of EP0851183A2 publication Critical patent/EP0851183A2/en
Publication of EP0851183A3 publication Critical patent/EP0851183A3/en
Withdrawn legal-status Critical Current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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Kälteanlage zur Erzeugung von tiefen Temperaturen, wobei mehrere thermisch gekoppelte, geschlossene Kältemittelkreisläufe vorgesehen sind. Dabei sind vorzugsweise drei Kältemittelkreisläufe (I,II,III) mit unterschiedlichen geeigneten Kältemitteln vorgesehen, wobei die thermische Kopplung über Wärmetauscher (20,6) erfolgt und das Kältemittel eines jeden nachgeschalteten Kältemittelkreislaufs (II,III) im Wärmetauscher (20,6) über das Kältemittel des jeweils zuvorgeschalteten Kältemittelkreislaufs (I,II) vorgekühlt wird. Dadurch ist es möglich, auch bei vergleichsweise niedrigen Arbeitsdrücken Temperaturen bis zu etwa -125°C zu erzielen.

Figure 00000001
Refrigeration system for generating low temperatures, several thermally coupled, closed refrigerant circuits being provided. Three refrigerant circuits (I, II, III) with different suitable refrigerants are preferably provided, the thermal coupling being carried out via heat exchangers (20,6) and the refrigerant of each downstream refrigerant circuit (II, III) in the heat exchanger (20,6) the refrigerant of the upstream refrigerant circuit (I, II) is pre-cooled. This makes it possible to reach temperatures down to around -125 ° C even at comparatively low working pressures.
Figure 00000001
EP97122135A 1996-12-20 1997-12-16 Refrigeration system Withdrawn EP0851183A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653244 1996-12-20
DE1996153244 DE19653244A1 (en) 1996-12-20 1996-12-20 Refrigeration system

Publications (2)

Publication Number Publication Date
EP0851183A2 EP0851183A2 (en) 1998-07-01
EP0851183A3 true EP0851183A3 (en) 2000-04-05

Family

ID=7815494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97122135A Withdrawn EP0851183A3 (en) 1996-12-20 1997-12-16 Refrigeration system

Country Status (2)

Country Link
EP (1) EP0851183A3 (en)
DE (1) DE19653244A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20003397U1 (en) * 2000-02-24 2000-09-21 Pucel Markus Enclosure cooling unit in cascade connection with refrigerant R 600a
DE10011538B4 (en) * 2000-03-01 2011-07-07 Institut für Luft- und Kältetechnik gemeinnützige Gesellschaft mbH, 01309 Device for cooling utility and process water
DE102005049950B4 (en) * 2005-10-19 2014-04-03 Kälteconcept GmbH Method for generating low temperatures and a cascade refrigeration system operating thereafter
CN101865589B (en) * 2010-07-14 2012-03-28 天津商业大学 Environment-friendly and freon-free ultralow cold storage
DE102010031335A1 (en) * 2010-07-14 2012-01-19 Werner & Pfleiderer Lebensmitteltechnik Gmbh Refrigeration system for cooling dough product, comprises pre-cooling unit comprising pre-refrigerating machine, main cooling unit comprising main refrigerating machine, transmission heat exchanger, condenser and commercial heat exchanger
WO2021121546A1 (en) 2019-12-16 2021-06-24 Mainklima Gmbh Compression refrigeration system for electric refrigeration chambers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028079A (en) * 1976-02-23 1977-06-07 Suntech, Inc. Cascade refrigeration system
US4550574A (en) * 1983-06-02 1985-11-05 Sexton-Espec, Inc. Refrigeration system with liquid bypass line
EP0516093A1 (en) * 1991-05-28 1992-12-02 Sanyo Electric Co., Ltd. Refrigerating unit
DE4228415C1 (en) * 1992-08-31 1993-09-16 Stal-Astra Gmbh Kaelteanlagen, 21509 Glinde, De Refrigeration system for food display cabinet - has high and low pressure circuits for refrigeration medium allowing different food compartments to be held at different temp. levels
WO1994021919A1 (en) * 1993-03-25 1994-09-29 Robert Arden Higginbottom Equalization of load across a compressor upon shutdown
US5447038A (en) * 1993-11-16 1995-09-05 Reefco Manufacturing Corporation Apparatus for simultaneously providing multiple temperatures using an automatically configurable cooling system having both cascade and single compressor modes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474151A1 (en) * 1980-01-21 1981-07-24 Inst Francais Du Petrole METHOD OF PRODUCING HEAT USING A HEAT PUMP USING A SPECIFIC MIXTURE OF FLUIDS AS A WORKING AGENT
US4727727A (en) * 1987-02-20 1988-03-01 Electric Power Research Institute, Inc. Integrated heat pump system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028079A (en) * 1976-02-23 1977-06-07 Suntech, Inc. Cascade refrigeration system
US4550574A (en) * 1983-06-02 1985-11-05 Sexton-Espec, Inc. Refrigeration system with liquid bypass line
EP0516093A1 (en) * 1991-05-28 1992-12-02 Sanyo Electric Co., Ltd. Refrigerating unit
DE4228415C1 (en) * 1992-08-31 1993-09-16 Stal-Astra Gmbh Kaelteanlagen, 21509 Glinde, De Refrigeration system for food display cabinet - has high and low pressure circuits for refrigeration medium allowing different food compartments to be held at different temp. levels
WO1994021919A1 (en) * 1993-03-25 1994-09-29 Robert Arden Higginbottom Equalization of load across a compressor upon shutdown
US5447038A (en) * 1993-11-16 1995-09-05 Reefco Manufacturing Corporation Apparatus for simultaneously providing multiple temperatures using an automatically configurable cooling system having both cascade and single compressor modes

Also Published As

Publication number Publication date
EP0851183A2 (en) 1998-07-01
DE19653244A1 (en) 1998-06-25

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