EP1714094A1 - Installation frigorifique et procede pour faire fonctionner une installation frigorifique - Google Patents

Installation frigorifique et procede pour faire fonctionner une installation frigorifique

Info

Publication number
EP1714094A1
EP1714094A1 EP05707175A EP05707175A EP1714094A1 EP 1714094 A1 EP1714094 A1 EP 1714094A1 EP 05707175 A EP05707175 A EP 05707175A EP 05707175 A EP05707175 A EP 05707175A EP 1714094 A1 EP1714094 A1 EP 1714094A1
Authority
EP
European Patent Office
Prior art keywords
refrigeration
consumer
expansion
modified
refrigerant
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Withdrawn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
EP05707175A
Other languages
German (de)
English (en)
Inventor
Uwe Schierhorn
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.)
Carrier Corp
Original Assignee
Linde Kaeltetechnik 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 Linde Kaeltetechnik GmbH filed Critical Linde Kaeltetechnik GmbH
Publication of EP1714094A1 publication Critical patent/EP1714094A1/fr
Withdrawn legal-status Critical Current

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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0401—Refrigeration circuit bypassing means for the compressor
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • 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
    • F25B2400/073—Linear 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
    • F25B2400/07—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
    • F25B2400/14—Power generation using energy from the expansion of the 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
    • 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
    • F25B2400/22—Refrigeration systems for supermarkets
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements

Definitions

  • the invention relates to a refrigeration system with at least one, at least one evaporator cooling consumer, at least one supply and at least one discharge line, via which the refrigerant or refrigerant mixture is supplied to the cold consumer (s) or removed from the cold consumer (s), the evaporator (s) Expansion organs are assigned.
  • the invention relates to a method for operating a refrigeration system, wherein modified expansion valves and modified linear compressors are assigned to the refrigeration consumer (s).
  • the invention relates to a method for operating a refrigeration system, by-pass lines being assigned to the conventional expansion valve and the conventional compressor (s) of the refrigeration consumer.
  • modified expansion valves should be understood below to mean all expansion valves which, in addition to the primary function “expansion of a liquid”, have the secondary function “realization of a fluid connection".
  • modified compressor in the following encompasses all compressors which, in addition to the primary function “compression of a gas”, enable the secondary function "realization of a fluid connection”.
  • Generic refrigeration systems are operated, for example, in supermarkets or wholesale stores. They generally supply a large number of refrigeration consumers, such as cold rooms, refrigerators and / or freezers. For this purpose, a one- or multi-component refrigerant or mixture of refrigerants circulates in them.
  • a refrigeration system - as is known from DE-PS 39 28 430 - has a condenser in which the pressurized refrigerant (mixture) is condensed by indirect heat exchange, preferably against outside air.
  • the liquid refrigerant (mixture) from the condenser is fed to an optional container.
  • refrigerant there must always be enough refrigerant in a refrigeration system that the evaporators of all refrigeration consumers can be filled even when there is a maximum demand for refrigeration.
  • the excess refrigerant (mixture) must be collected in the storage container provided during these times.
  • the refrigerant (mixture) is fed from the collection container to the cold consumers via at least one liquid line.
  • An expansion device preferably an expansion valve, is connected upstream of each refrigeration consumer, in which the refrigerant (mixture) flowing into the refrigeration consumer or the evaporator (s) of the refrigeration consumer is expanded.
  • the refrigerant (mixture) which has been expanded in this way is evaporated in the evaporators of the refrigerant consumers and thus cools the corresponding refrigeration cabinets or rooms.
  • the evaporated refrigerant (mixture) is then fed to a compressor unit via a suction line.
  • These compressor units can be designed in one or more stages.
  • the individual compressor stages usually have several compressors connected in parallel. These compress the refrigerant (mixture) and convey it via a riser to the previously mentioned condenser. While the compressor unit is normally located, for example, in a machine room located in the basement of a supermarket, the condenser is located on the roof of the supermarket.
  • Rotary driven, oil-lubricated reciprocating compressors are generally used as compressors.
  • the disadvantage here is that appropriate measures must be taken to enable the oil discharged from the reciprocating compressor to be separated from the refrigerant (mixture).
  • it must generally be ensured that the separated oil is in turn fed to the reciprocating compressor (s).
  • the mixture of refrigerant and oil must be used are first routed to certain points in the circuit, which is why minimum speeds have to be reached in rising suction and pressure lines, otherwise the oil would not be carried along. These minimum speeds make the pipe diameters smaller, which results in additional, undesirable pressure losses and thus energy losses.
  • pipe splits In order to be able to avoid these pressure and energy losses in riser pipes, pipe splits have to be made, which, however, in turn results in increased installation outlay. Process engineering aspects are therefore undesirably closely linked to economic aspects.
  • the term “condenser” is used. If it is a cold vapor compression process in the two-phase area, a condenser is actually used.
  • the term “liquefier” stands for a gas cooler. It is essential that heat is removed from the cycle.
  • the liquefaction can be carried out in an air-cooled apparatus, in a medium-pressure separator or by another set in a cascade connection.
  • a cascade connection is always present when there is another chiller that is operated at a higher temperature level and that only releases the heat of condensation to the environment.
  • the refrigeration unit depends on this refrigeration machine and in turn transfers its heat of condensation to it.
  • a normal chiller can be connected upstream of a freezer, whereby both chillers can have different refrigerants (mixtures).
  • the refrigeration system or the evaporators arranged in the refrigeration consumers must be defrosted at regular intervals, since frosting or icing of the evaporators leads to a reduction in the efficiency of the evaporators.
  • One way of defrosting is electrical defrosting. In this, the evaporators are defrosted by means of electrical heaters arranged on and / or in them. However, this procedure leads to an undesirable additional consumption of electrical energy.
  • So-called compressed gas defrosting is an alternative to the above-described electrical defrosting.
  • compressed gas lines are laid between the gas space of the collecting container connected downstream of the condenser and each evaporator or evaporator group and, via these, gaseous refrigerant, which preferably has a temperature between 35 and 45 ° C., is fed from the collecting container to the evaporators or evaporator groups.
  • the object of the present invention is to provide a refrigeration system of the generic type which has advantages over the refrigeration systems which belong to the prior art with regard to their investment and operating costs and reliability.
  • a refrigeration system which is characterized in that the expansion elements are designed as modified expansion valves and / or as modified linear expansion machines or bypass lines are assigned to them, and Each refrigeration consumer is assigned a modified linear compressor or a conventional compressor which has a by-pass line, the modified expansion valve (s) and / or the modified linear expansion machine (s) and / or the modified linear compressor (s) Have working position that allow a flow without significant pressure drop.
  • linear compressors work as oil-free cryo-Stirling coolers at the lowest temperatures and the lowest outputs, i.e. in cold vapor compression.
  • Linear compressors have only been used in cold steam compression for a few years and have only been used to a limited extent. The applicant is only aware of one application in the cooling sector, namely the use of a linear compressor in a household refrigerator.
  • a disadvantage of linear compressors is that their manufacturing costs have so far been significantly higher than those of rotary driven reciprocating compressors, but on a similar scale as
  • Linear compressors have the advantage that they allow stepless output control, which is achieved by stroke control. They can also be operated oil-free. In addition, the condensate that inevitably arises during defrosting does not damage them. They are also energetically superior to rotary driven, oil-lubricated reciprocating compressors.
  • the piston of one The linear compressor is mounted without contact and can be guided through so-called "flexible bearings" - that is, flexible bearings - which enable axial mobility combined with radial rigidity. Ultimately, it is a combination of springs that unwind and wind up, which, in addition to its periodic translational movement, causes the piston to rotate about its longitudinal axis.
  • Linear compressors can be operated oil-free because they have no plain bearings. There are a number of advantages to this freedom from oil. In the case of compressed gas defrosting with condensation, the previously comparatively vulnerable bearings can no longer be damaged by liquid refrigerant (mixture).
  • the known acid formation in the lubricating oils which can lead to the so-called Bur ⁇ -Out of the winding in built-in motors, has hitherto been more or less effectively avoided by the use of refrigerant dryers.
  • These molecular sieve dryers can now be omitted, unless the water content is so high that ice loss is to be feared during expansion. Regardless of this, it is advisable to provide dirt filters directly in front of the expansion valves or machines.
  • Linear compressors also have the advantage that they are not damaged by the pumping of liquid - in contrast to other compressor designs. Pumping liquid is particularly an issue after the end of a defrosting process, as at this point u. U. condensate still remains in the defrosted evaporators, which is sucked in by the compressor when it is restarted. However, it is advisable to ensure that liquid is pumped carefully. This means that small strokes are first started to limit the maximum performance of the compressor during the liquid flow and to protect the working valves and the stroke catcher. A constructive solution has also already been proposed in which a disc valve as a pressure valve replaces the cylinder head; this leads to very high operational reliability.
  • the compressor sets previously to be provided in refrigeration systems can now be omitted, since at least one individual compressor is assigned to each consumer. This means that every consumer can be controlled individually and continuously using his own compressor. In contrast to the known procedures or refrigeration systems, this individual regulation can now take place independently of the temperature level in the return line, since the return or discharge line is no longer the suction line, the pressure of which depends on the evaporation temperature, which determines the temperature of the refrigeration consumers. is dependent, but the pressure line.
  • freezer furniture can, for example, be used and operated temporarily as normal refrigerated furniture and / or shelves for fresh meat for dairy products.
  • this changeover is carried out by adjusting a temperature selection button on the respective refrigerated cabinet.
  • a pressure line - compared to the corresponding suction line - has a smaller diameter and does not require any insulation.
  • the invention further relates to two alternative methods for operating a generic refrigeration system in order to implement a compressed gas defrosting method.
  • the first alternative of the method according to the invention for operating a refrigeration system is characterized in that during the defrosting phase of the or at least one of the refrigeration consumers, the modified expansion valve (s) and the modified linear compressor (s) of the refrigeration consumer (s) to be defrosted are moved into the working position , in which a flow is possible without any significant drop in pressure.
  • the second alternative of the method according to the invention for operating a refrigeration system is characterized in that the associated by-pass lines are opened during the defrosting phase of the or at least one of the refrigeration consumers and the associated conventional expansion valve and the associated conventional compressor (s) are taken out of operation.
  • FIG. 1 shows a refrigeration system according to the invention, by means of which three refrigeration consumers V, V "and V" are supplied. Of course, the number of refrigeration consumers can be as large as desired.
  • the above-mentioned refrigeration consumers are supplied via a (central) feed line 1 and lines 1 ', 1 "-as well as 1'" branching therefrom, the refrigerant or mixture of refrigerants - hereinafter referred to as "refrigerant".
  • FIG. 2 shows an example of an embodiment of the refrigeration system according to the invention that is alternative to the embodiment shown in FIG.
  • modified linear expansion machines can also be used.
  • the expanded refrigerant is fed via lines 2', 2 "or 2 '" to the evaporators of the refrigeration consumers V, V "or V” and evaporated therein ,
  • the evaporated refrigerant is then fed back to the (central) return line 3 via the return lines 3 ', 3 "or 3'".
  • the modified linear compressors x, y and z shown in FIG. 1 it is also possible to provide a conventional compressor x 'which has a by-pass line 5, shown in dashed lines; this Embodiment of the refrigeration system according to the invention is also shown in Figure 2.
  • Linear compressor x to the evaporator of the refrigeration consumer V and defrosts it. ' Via line 2', the opened modified expansion valve a and the line, the refrigerant cooled and possibly condensed by the defrosting process is fed back to the (central) supply line 1 and then reaches lines 1 and 1 '' again to the cooling consumers V "and V".
  • the refrigeration consumers V, V "and / or V" - as shown in FIG. 1 - can be connected to the supply line 1 and the discharge line 3 by means of couplings, preferably by means of quick couplings K, in particular by means of standardized quick couplings become.
  • the refrigeration consumers V, V, V ",... Can also - as shown in FIG. 2 - be connected to one another in segments and directly, including the main lines 1 and 3. It is important to ensure that, under certain circumstances, consumers or condensers are at a different level - for example, cold rooms that are located in other floors of a wholesale market - are connected to each other, but a direct coupling or connection is not possible in every case.
  • Both methods according to the invention for operating a refrigeration system now make it possible for one or more refrigeration consumers to be defrosted at the same time to be defrosted by the other refrigeration consumer (s) in the cooling phase. This is possible without the need for additional pipeline networks and / or additional energy sources - as they were previously required for pressurized gas defrosting.
  • the or at least one of the refrigeration consumers has its own closed refrigerant (mixture) circuit
  • the refrigerant (mixture) circuits are operatively connected to the supply and discharge lines via at least one condenser and or the refrigerant (mixed) circuits each have modified expansion valves and / or modified linear expansion machines or conventional valves with assigned by-pass lines and modified linear compressors or conventional compressors with assigned by-pass lines, the ' evaporator of a refrigeration consumer being higher than that Condenser of the refrigeration consumer is arranged.
  • FIG. 3 shows the aforementioned embodiment of the refrigeration system according to the invention using the refrigeration consumer V as an example.
  • Refrigerant (mixed) circuits 6, 7, 8 and 9. This is in operative connection via the condenser E with the feed line 1 and the discharge line 3.
  • the refrigerant (mixed) circuit 6, 7, 8 and 9 has either a modified expansion valve a and a modified linear compressor x or a modified linear expansion machine or the conventional valve or Conventional expansion machines and the conventional compressor are assigned bypass lines, which are drawn with dashed lines in FIG. 3.
  • the linear compressors to be provided are operated oil-free.
  • all of the measures that were previously required that would be required for the separation, return, distribution and storage of the oil are thus eliminated. Since the transportation or distribution of the oil within the pipeline network is no longer an issue, the dimensioning of the individual pipelines or pipe sections can now only be based on economic criteria.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipeline Systems (AREA)
  • Defrosting Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne un nouveau type d'installation frigorifique comprenant au moins un consommateur frigorifique présentant au moins un évaporateur, au moins une conduite d'alimentation et au moins une conduite d'évacuation permettant d'assurer l'alimentation ou l'évacuation de l'agent réfrigérant ou du mélange d'agents réfrigérants par rapport au(x) consommateur(s) frigorifique(s). Des organes d'expansion sont associés au(x) évaporateur(s). Cette invention est caractérisée en ce que les organes d'expansion sont conçus sous forme de détendeurs modifiés (a, b, c) et/ou sous forme de machines d'expansion linéaires modifiées ou des conduites de dérivation (4) sont associées à ceux-ci, en ce qu'un compresseur linéaire modifié (x, y, z) ou un compresseur traditionnel (x') présentant une conduite de dérivation (5) est associé à chaque consommateur frigorifique (V', V'', V'''), et en ce que le ou les détendeurs modifiés (a, b, c) et/ou la ou les machines d'expansion linéaires modifiées et/ou le ou les compresseurs linéaires modifiés (x, y, z) présentent une position de travail qui permet un écoulement sans chute de pression considérable. La présente invention concerne également deux procédés alternatifs pour faire fonctionner une installation frigorifique.
EP05707175A 2004-02-09 2005-02-03 Installation frigorifique et procede pour faire fonctionner une installation frigorifique Withdrawn EP1714094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004006271A DE102004006271A1 (de) 2004-02-09 2004-02-09 Kälteanlage und Verfahren zum Betreiben einer Kälteanlage
PCT/EP2005/001092 WO2005075901A1 (fr) 2004-02-09 2005-02-03 Installation frigorifique et procede pour faire fonctionner une installation frigorifique

Publications (1)

Publication Number Publication Date
EP1714094A1 true EP1714094A1 (fr) 2006-10-25

Family

ID=34801779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05707175A Withdrawn EP1714094A1 (fr) 2004-02-09 2005-02-03 Installation frigorifique et procede pour faire fonctionner une installation frigorifique

Country Status (4)

Country Link
US (1) US20070220910A1 (fr)
EP (1) EP1714094A1 (fr)
DE (1) DE102004006271A1 (fr)
WO (1) WO2005075901A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011110390U1 (de) * 2011-02-14 2013-11-12 Kmw Kühlmöbelwerk Limburg Gmbh Kühlmöbel für ein zentrales Kälteversorgungssystem

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1445753A (en) * 1918-07-22 1923-02-20 George P Carroll Multispeed refrigerating apparatus
US3507322A (en) * 1969-05-08 1970-04-21 Freez Porter Systems Inc Apparatus for handling perishable materials
US3662557A (en) * 1970-10-05 1972-05-16 Dunham Bush Inc Aspirator disposal system for air conditioner evaporator condensate
US4103510A (en) * 1976-12-13 1978-08-01 Hall Roger W Portable cooling chest operatively attachable to an automobile air conditioning system
US4103519A (en) * 1977-03-18 1978-08-01 Byron W. Boyd Apparatus for ultrasonic cleaning of carpet, upholstery, and similar materials
US4285210A (en) * 1980-04-28 1981-08-25 General Electric Company Self-contained heating and cooling apparatus
US4346566A (en) * 1981-06-04 1982-08-31 General Electric Company Refrigeration system gravity defrost
US4420943A (en) * 1982-05-10 1983-12-20 Raytheon Company Method and apparatus for refrigerator defrost
CH660776A5 (de) * 1983-09-20 1987-06-15 Fischer Ingenieurbuero Verfahren und vorrichtung zur erhoehung des gesamtwirkungsgrades einer waermepumpenanlage.
DE3429058A1 (de) * 1984-08-07 1986-02-20 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Verfahren und vorrichtung zum abtauen eines verdampfers einer luft-waser-waermepumpe
DE3928430C1 (fr) * 1989-08-28 1991-03-07 Linde Ag, 6200 Wiesbaden, De
DE19516096C1 (de) * 1995-05-03 1996-11-14 Trinova Aeroquip Gmbh Schnellkupplung, insbesondere für Kältemittelleitungen
FR2738056B1 (fr) * 1995-08-09 1998-03-06 Pourcelle Charles Armoire refrigeree modulaire, pour la conservation de produits vivants notamment
US5669222A (en) * 1996-06-06 1997-09-23 General Electric Company Refrigeration passive defrost system
MY114473A (en) * 1997-04-08 2002-10-31 Daikin Ind Ltd Refrigerating system
JPH11132580A (ja) * 1997-10-31 1999-05-21 Matsushita Refrig Co Ltd 冷蔵庫
JP3888403B2 (ja) * 1997-12-18 2007-03-07 株式会社富士通ゼネラル 空気調和機の制御方法およびその装置
US6687122B2 (en) * 2001-08-30 2004-02-03 Sun Microsystems, Inc. Multiple compressor refrigeration heat sink module for cooling electronic components
DE60129231T2 (de) * 2001-12-05 2008-03-13 Whirlpool Corp., Benton Harbor Verfahren zur Regelung eines Kompressors mit variabler Kühlleistung und nach diesem Verfahren geregelter Kühl- oder Gefrierschrank
JP4075429B2 (ja) * 2002-03-26 2008-04-16 三菱電機株式会社 冷凍空調装置
US6868686B2 (en) * 2002-04-04 2005-03-22 Matsushita Electric Industrial Co., Ltd. Refrigeration cycle apparatus
DE10215586A1 (de) * 2002-04-10 2003-10-23 Stiebel Eltron Gmbh & Co Kg Einrichtung zum Eisfreihalten eines Wärmeaustauscherapparats
KR100484802B1 (ko) * 2002-07-03 2005-04-22 엘지전자 주식회사 두 개의 압축기를 구비한 공기조화기의 제상운전방법
US20040065111A1 (en) * 2002-10-08 2004-04-08 Sun Microsystems, Inc. Field replaceable packaged refrigeration module with thermosyphon for cooling electronic components
JP2004257572A (ja) * 2003-02-24 2004-09-16 Gac Corp 冷却ショーケース

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005075901A1 *

Also Published As

Publication number Publication date
DE102004006271A1 (de) 2005-08-25
WO2005075901A1 (fr) 2005-08-18
US20070220910A1 (en) 2007-09-27

Similar Documents

Publication Publication Date Title
EP1895246B1 (fr) Circuit frigorifique et procédé de fonctionnement d'un circuit frigorifique
WO2006015741A1 (fr) Circuit frigorifique et procede de fonctionnement d'un circuit frigorifique
DE69318810T2 (de) Kühlanlage
DE69722146T2 (de) Kälteanordnung mit einem Verdichter für ein- oder mehrstufigen Betrieb mit Leistungsregelung
DE69730125T2 (de) Kältegerät und verfahren zu seiner herstellung
DE60038616T2 (de) Kältevorrichtung mit mehrstufiger verdichtung
DE112015004059T5 (de) Zentrifugalkühler
DE102019201427A1 (de) Verfahren zum Betreiben eines Kältemittelkreislaufs einer Kälteanlage eines Fahrzeugs
EP3099985B1 (fr) Système de réfrigération
AT504135B1 (de) Verfahren zur wärmerückgewinnung
EP1050726B1 (fr) Système frigorifique
DE102011012644A1 (de) Kälteanlage
WO2005075901A1 (fr) Installation frigorifique et procede pour faire fonctionner une installation frigorifique
AT509647A2 (de) Transkritisches co2 wärme-kälte-verbundsystem
EP1983276A1 (fr) Installation de refroidissement
EP1050723B1 (fr) Système frigorifique et procédé de fonctionnement d'un système frigorifique
DE10332859A1 (de) Heißgasabtauverfahren für Kälteanlagen
DE10233411B4 (de) Kälteanlage mit wenigstens einem Kältekreislauf und Verfahren zum Abtauen des oder der Kälteverbraucher einer Kälteanlage
WO2005075904A1 (fr) Meuble frigorifique, y compris congelateur, a mode de circulation naturelle
EP0073363B1 (fr) Evaporateur pour un appareil de refroidissement à plusieurs témperatures
EP1050724A2 (fr) Système frigorifique
EP1808655A2 (fr) Installation de refroidissement
WO2015110632A1 (fr) Système de réfrigération
CH698242B1 (de) Kühlsystem.
DE102021125108A1 (de) Expansions-Kompressionsmaschine für Kältekreisläufe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060831

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LINDE KAELTETECHNIK GMBH

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CARRIER CORPORATION

17Q First examination report despatched

Effective date: 20130521

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130829