EP1050726A2 - Système frigorifique - Google Patents

Système frigorifique Download PDF

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Publication number
EP1050726A2
EP1050726A2 EP00109558A EP00109558A EP1050726A2 EP 1050726 A2 EP1050726 A2 EP 1050726A2 EP 00109558 A EP00109558 A EP 00109558A EP 00109558 A EP00109558 A EP 00109558A EP 1050726 A2 EP1050726 A2 EP 1050726A2
Authority
EP
European Patent Office
Prior art keywords
circuit
refrigeration system
refrigeration
freezer
line
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
EP00109558A
Other languages
German (de)
English (en)
Other versions
EP1050726B1 (fr
EP1050726A3 (fr
Inventor
Klaus Koch
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 Kaeltetechnik Deutschland GmbH
Original Assignee
Linde 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
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Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP1050726A2 publication Critical patent/EP1050726A2/fr
Publication of EP1050726A3 publication Critical patent/EP1050726A3/fr
Application granted granted Critical
Publication of EP1050726B1 publication Critical patent/EP1050726B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • 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
    • F25B2400/075—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
    • F25B2400/16—Receivers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves

Definitions

  • the invention relates to a refrigeration system for cooling at least one refrigeration consumer by means of a normal cooling circuit and for cooling at least one Refrigeration consumers using a deep-freeze circuit, with each of the circuits having a Compressor unit has only one condenser and the pressure lines are brought together by the compressor units before the condenser.
  • Refrigeration systems are operated, for example, in supermarkets. They supply in there general a variety of refrigeration consumers, such as cold rooms, refrigeration and Freezer. For this purpose, a one- or multi-component circulates in them Refrigerant or refrigerant mixture.
  • a refrigeration system like that from the DE-PS 39 28 430 is known - has a condenser in which the under pressure standing refrigerants through indirect heat exchange, preferably against outside air, is condensed.
  • the liquid refrigerant from the condenser is fed to a collection container.
  • a collection container There must always be as much refrigerant in a refrigeration system as it does at maximum cooling demand, the evaporators of all cooling consumers are filled can. However, since individual evaporators are only partially used when cooling is low are filled or even completely empty, the excess refrigerant must during these times are collected in the designated container.
  • the refrigerant is fed to the refrigeration consumers from the collection container.
  • Each refrigeration consumer has an expansion device, preferably an expansion valve upstream, in which the in the cold consumer or the or Evaporator of the refrigerant flowing refrigerant is relaxed. That so expanded refrigerant is evaporated in the evaporators of the refrigerant consumers and thus cools the corresponding refrigeration furniture and rooms.
  • the refrigerant evaporated in this way is then passed through a suction line Compressor unit supplied.
  • These compressor units can have one or more stages be trained.
  • the individual compressor stages usually have several in parallel switched compressor. These compress and convey the refrigerant a riser in turn to the previously mentioned condenser. While the Compressor unit normally in one, in the basement one Is located in the supermarket, the condenser is on the roof of the supermarket.
  • the object of the present invention is to provide a refrigeration system of the generic type to indicate the lower investment and operating costs as well as installation costs makes necessary.
  • a refrigeration system which is thereby distinguishes that the pressure lines from the compressor units via a Defrost line, which is preferably designed to be shut off, with the suction line Compressor unit of the freezer circuit are connected.
  • the refrigeration system shown in Figure 1 has only one condenser V on this - according to an advantageous embodiment of the invention - a collection container S1 may be connected downstream.
  • the liquid refrigerant from the condenser V is fed to the collection container S1 via line 1.
  • consumers V1 and V2 for any number of consumers of the Normal cooling circuit, while the consumers shown in Figure 1 V3 and V4 stand for any number of consumers in the freezer circuit.
  • An expansion valve a to d is connected upstream of each cooling consumer V1 to V4 or assigned in which the in the cold consumer or the evaporator or evaporators the refrigerant flowing refrigerant is relaxed.
  • the so relaxed Refrigerant is evaporated in the evaporators of the refrigerant consumers V1 to V4 and thus cools the corresponding refrigeration furniture and rooms of the normal and deep-freeze circuits.
  • the refrigerant evaporated in the refrigeration consumers V1 and V2 of the normal cooling circuit is via a suction line 5 of the compressor unit of the normal cooling circuit fed.
  • Refrigeration system - a suction collecting tank S2 upstream.
  • the compressor unit of the normal cooling circuit is only one stage and has several, preferably three, compressors connected in parallel; the clarity for the sake of the figure there are only two compressors C1 and C2 connected in parallel shown.
  • Cooling or subcooling of the refrigerant in the liquid line 4 the for example in indirect heat exchange with that promoted in line 10 Refrigerant can be done.
  • the consumers V3 and V4 of the freezer circuit via the liquid line 4 supplied refrigerant is the suction line 10 of the compressor unit of the freezer circuit fed.
  • a low-pressure suction tank S3 may be connected upstream.
  • the compressor unit of the freezer circuit is preferably at least two stages trained, again for the sake of clarity through each compressor stage Two compressors C3 and C5 and C4 and C6 connected in parallel is shown.
  • the Compressors C3 and C5 of the first compressor stage suck via lines 11 and 12 gaseous refrigerant from the low-pressure suction tank S3 and pump the refrigerant compressed to an intermediate pressure via line 13 in the Intermediate pressure suction container S4.
  • the compressors C4 and C6 of the second compressor stage via lines 14 and 15 refrigerant and then also convey the compressed refrigerant via the pressure line 16 in front of the previously mentioned desuperheater E in line 9.
  • Compressor unit of the freezer circuit can also be designed in three or more stages; in this case, the individual compressor stages could each have separate suction collecting containers upstream. It should be noted that of course also can be dispensed with such a suction container.
  • the refrigeration system according to the invention has one compared to the known solutions lower investment and operating costs as well as installation costs. she also enables - as will be explained - further constructive designs and procedures that are difficult or impossible with previous solutions are to be realized.
  • Refrigeration system or the evaporators arranged in the refrigeration consumers must be in are defrosted at regular intervals because of frosting or icing on the Evaporators lead to a reduction in the efficiency of the evaporators.
  • So-called compressed gas defrosting is an alternative to the electrical defrosting described on.
  • the downstream of the condenser between the gas space Collection container and each evaporator or each evaporator group Compressed gas lines laid and over this gaseous refrigerant, which is a temperature between 35 ° C and 45 ° C, from the collection container to the evaporators or evaporator groups supplied.
  • the installation effort for this compressed gas defrost is comparatively high, however, because for each evaporator or each evaporator group a separate compressed gas line must be provided.
  • the pressure lines 8 and 16 are of the Compressor units C1 / C2 and C3 / C4 / C5 / C6 via a defrost line 30, which is preferred e.g. B. is designed to be shut off by means of a valve e, with the suction line 10 the compressor unit C3 / C4 / C5 / C6 of the freezer circuit.
  • the refrigerant is now supplied from the compressor unit C1 / C2 of the normal cooling circuit to the condenser V interrupted Compressor unit C3 / C4 / C5 / C6 of the freezer circuit switched off and the heated Refrigerant via the opened defrost line 30 of the suction line 10 and via this Refrigeration consumers V3 and V4 of the freezer circuit supplied.
  • the flow course of the refrigerant during the defrost phase is indicated by the large, framed arrows shown.
  • the defrost phase it makes sense to remove warm refrigerant from the storage tank S1 via the liquid lines 2 and 4 to the evaporators of the refrigeration consumers V3 and V4 of the freezer circuit flows the ones to be defrosted Evaporators are thereby accumulated with liquid refrigerant, which already creates a The evaporators to be defrosted are heated. As soon as that by means of the compressor unit C1 / C2 of the normal cooling circuit via the defrost line 30 to the evaporators the refrigerant V3 and V4 supplied refrigerant flows into the evaporator the previously accumulated refrigerant is displaced.
  • Another advantageous embodiment of the refrigeration system according to the invention is therefore characterized in that at least one of the refrigeration consumers V3 and V4 of Freezer circuit or the evaporators of these refrigeration consumers a directly controlled Solenoid valve that leads to the corresponding expansion valve of the refrigeration consumer is arranged in parallel, is connected upstream.
  • FIG. 1 Liquid line 4 and suction line 10 and the evaporator of the consumer V3 assigned expansion valve c, via which the refrigerant in the cooling mode in the Evaporator is injected.
  • refrigerant thus flows out of the liquid line 4 via line 40 to the expansion valve c and from this via the Line 42 in the evaporator of the refrigeration consumer V3.
  • a directly controlled solenoid valve c ' is provided.
  • the refrigerant flows through the defrost line 30, not shown in FIG. 2 and the suction line 10 in the evaporator of the refrigeration consumer V3 and then via lines 42 and 41 into the liquid line 4.
  • Is in one of the evaporators reaches the pre-set end of defrost temperature - for example by means of of a corresponding defrost sensor can be registered - the solenoid valve c ' closed.
  • the direct-controlled solenoid valve c acts as a check valve when the coil is de-energized with an opening pressure of approx. 1.5 bar, which is due to the valve.
  • the evaporators are simultaneously on the compressors of the normal and deep-freeze circuits.
  • refrigerant is automatically injected into the evaporator.
  • the evaporators of the freezer circuit are cooled in about 5 minutes.
  • Performance of the compressors of the normal cooling circuit is available because of the cooling points or refrigeration consumers of the normal cooling circuit during the defrosting of the evaporators the refrigeration consumer V3 and V4 of the deep-freeze circuit on forced cooling are switched and thereby reach temperatures below the target value. For the entire freezer area can therefore have a significantly shorter defrost time compared to electrical defrost can be achieved.
  • the implementation of the described defrosting process requires in the invention Refrigeration system compared to a refrigeration system in which an electrical defrost is carried out, no additional work on pipes and fittings.
  • the evaporators of the refrigeration consumers V3 and V4 of the freezer circuit no power has to be switched on - as is the case, for example, in In the case of an electrical defrost - the only thing that is cooling is in the energy balance after the defrost phase.
  • the defrosting performance is purer in itself Heat pump operation from the normal cooling composite set or the compressor unit C1 / C2.
  • Another advantage is that the pipe insulation is poorly ventilated Do not wet the floor ducts and / or under the refrigeration cabinets as they are forced to be heated every 48 hours during the defrosting process.
  • the goods are exposed to a lower temperature load, since only more three times a week - for example on Tuesdays, Thursdays and Saturdays - must be defrosted. With separate refrigerant circuits and cold gas defrosting this is not possible because after 48 hours of cooling in the freezer circuit no defrosting power would be available for the first defrosting group.
  • the refrigeration system is operated in a so-called Energy-saving operation driven.
  • energy-saving operation here to understand those operating conditions in which the on the refrigeration units Night blinds shut down or above, the lights are off, the Cold room doors can no longer be opened and therefore no flow of goods - i.e. the Removal or delivery of goods from or into the refrigeration units or cold rooms - takes place.
  • the freezer circuit is an at least two-stage compressor unit C3 / C4 / C5 / C6 and the suction side of the normal cooling circuit with the or one of the intermediate pressure sides of the freezer circuit is operatively connected.
  • suction collecting tanks S2 and S4 upstream are preferably in operative connection with each other.
  • An active connection between the suction side of the normal cooling circuit and the or one of the intermediate pressure sides of the freezer circuit or between the suction collecting container the normal cooling circuit and one or one of the intermediate pressure suction containers of the freezer circuit can be according to an advantageous embodiment the refrigeration system according to the invention via at least one connecting line 20 will be realized.
  • Another embodiment of the refrigeration system according to the invention is characterized in that one the suction collecting tank S2 of the normal cooling circuit and Oil equalization line connecting the intermediate pressure suction tank S4 of the freezer circuit 21 is provided.
  • the refrigeration system according to the invention thus offers a variety of advantages the known refrigeration systems, especially with regard to the defrosting of the evaporators as well as energy saving. It enables this with a reduced installation effort and associated lower investment costs. Since both the Energy consumption and maintenance costs are reduced also the operating costs. Furthermore, with the described defrosting process Compliance with future legal requirements possible.
  • the invention not only with a refrigeration system an at least two-stage compressor unit of the freezer circuit - as in the Figure 1 shown -, but also realize with a single-stage compressor unit let.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP00109558A 1999-05-05 2000-05-04 Système frigorifique Expired - Lifetime EP1050726B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19920726A DE19920726A1 (de) 1999-05-05 1999-05-05 Kälteanlage
DE19920726 1999-05-05

Publications (3)

Publication Number Publication Date
EP1050726A2 true EP1050726A2 (fr) 2000-11-08
EP1050726A3 EP1050726A3 (fr) 2002-08-14
EP1050726B1 EP1050726B1 (fr) 2007-01-24

Family

ID=7907084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109558A Expired - Lifetime EP1050726B1 (fr) 1999-05-05 2000-05-04 Système frigorifique

Country Status (5)

Country Link
EP (1) EP1050726B1 (fr)
AT (1) ATE352760T1 (fr)
DE (2) DE19920726A1 (fr)
ES (1) ES2278558T3 (fr)
PT (1) PT1050726E (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293734A1 (fr) * 2001-09-15 2003-03-19 TEKO Gesellschaft für Kältetechnik mbH Système de refroidissement et circuit correspondant
EP1300639A1 (fr) * 2001-10-04 2003-04-09 Denso Corporation Circuit de refroidissement comportant un éjecteur
EP1498673A1 (fr) * 2003-07-18 2005-01-19 Linde Kältetechnik GmbH & Co.KG Système de dégivrage par gaz chaud pour installations de réfrigération
WO2005024314A2 (fr) * 2003-09-05 2005-03-17 Applied Design And Engineering Ltd Ameliorations a ou liees a la refrigeration
EP1422487A3 (fr) * 2002-11-21 2008-02-13 York Refrigeration APS Dégivrage par gaz chaud pour installations frigorifiques
WO2011054397A1 (fr) * 2009-11-06 2011-05-12 Carrier Corporation Circuit de réfrigération et procédé de dégivrage sélectif d'unités consommatrices de froid d'un circuit de réfrigération
US20110314846A1 (en) * 2004-08-09 2011-12-29 Linde Kaltetechnik Gmbh Refrigeration Circuit and Method for Operating a Refrigeration Circuit
US8113008B2 (en) * 2004-08-09 2012-02-14 Carrier Corporation Refrigeration circuit and method for operating a refrigeration circuit
CN104534755A (zh) * 2014-12-02 2015-04-22 青岛澳柯玛超低温冷冻设备有限公司 一种具有自动化霜功能的制冷系统
CN106642852A (zh) * 2016-12-30 2017-05-10 中原工学院 一种制冷装置三级复合式快速融霜系统
EP3372919A1 (fr) * 2017-03-02 2018-09-12 Heatcraft Refrigeration Products LLC Dégivrage par gaz chaud dans un système de refroidissement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5533207B2 (ja) 2010-05-06 2014-06-25 株式会社日本自動車部品総合研究所 ヒートポンプサイクル

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928430C1 (fr) 1989-08-28 1991-03-07 Linde Ag, 6200 Wiesbaden, De

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US3638444A (en) * 1970-02-12 1972-02-01 Gulf & Western Metals Forming Hot gas refrigeration defrost structure and method
US4184341A (en) * 1978-04-03 1980-01-22 Pet Incorporated Suction pressure control system
CH632080A5 (en) * 1978-05-18 1982-09-15 Hugo Ledermann Heat pump installation
US4474026A (en) * 1981-01-30 1984-10-02 Hitachi, Ltd. Refrigerating apparatus
US4589263A (en) * 1984-04-12 1986-05-20 Hussmann Corporation Multiple compressor oil system
US4522037A (en) * 1982-12-09 1985-06-11 Hussmann Corporation Refrigeration system with surge receiver and saturated gas defrost
US4554795A (en) * 1983-11-14 1985-11-26 Tyler Refrigeration Corporation Compressor oil return system for refrigeration apparatus and method
US5092134A (en) * 1989-08-18 1992-03-03 Mitsubishi Denki Kabushiki Kaisha Heating and cooling air conditioning system with improved defrosting
JP3136644B2 (ja) * 1991-05-16 2001-02-19 ダイキン工業株式会社 オフサイクルデフロスト装置
JPH05106944A (ja) * 1991-10-14 1993-04-27 Nippondenso Co Ltd 冷凍装置
JPH08159620A (ja) * 1994-12-08 1996-06-21 Nippon Kentetsu Co Ltd 冷凍冷蔵ショーケースの運転制御方法
JPH102643A (ja) * 1996-06-11 1998-01-06 Mitsubishi Heavy Ind Ltd 冷凍装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928430C1 (fr) 1989-08-28 1991-03-07 Linde Ag, 6200 Wiesbaden, De

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293734A1 (fr) * 2001-09-15 2003-03-19 TEKO Gesellschaft für Kältetechnik mbH Système de refroidissement et circuit correspondant
EP1300639A1 (fr) * 2001-10-04 2003-04-09 Denso Corporation Circuit de refroidissement comportant un éjecteur
EP1422487A3 (fr) * 2002-11-21 2008-02-13 York Refrigeration APS Dégivrage par gaz chaud pour installations frigorifiques
EP1498673A1 (fr) * 2003-07-18 2005-01-19 Linde Kältetechnik GmbH & Co.KG Système de dégivrage par gaz chaud pour installations de réfrigération
WO2005024314A2 (fr) * 2003-09-05 2005-03-17 Applied Design And Engineering Ltd Ameliorations a ou liees a la refrigeration
WO2005024314A3 (fr) * 2003-09-05 2005-06-23 Applied Design & Eng Ltd Ameliorations a ou liees a la refrigeration
US8113008B2 (en) * 2004-08-09 2012-02-14 Carrier Corporation Refrigeration circuit and method for operating a refrigeration circuit
US20110314846A1 (en) * 2004-08-09 2011-12-29 Linde Kaltetechnik Gmbh Refrigeration Circuit and Method for Operating a Refrigeration Circuit
US8844303B2 (en) 2004-08-09 2014-09-30 Carrier Corporation Refrigeration circuit and method for operating a refrigeration circuit
US9476614B2 (en) 2004-08-09 2016-10-25 Carrier Corporation Refrigeration circuit and method for operating a refrigeration circuit
US9494345B2 (en) 2004-08-09 2016-11-15 Carrier Corporation Refrigeration circuit and method for operating a refrigeration circuit
WO2011054397A1 (fr) * 2009-11-06 2011-05-12 Carrier Corporation Circuit de réfrigération et procédé de dégivrage sélectif d'unités consommatrices de froid d'un circuit de réfrigération
CN104534755A (zh) * 2014-12-02 2015-04-22 青岛澳柯玛超低温冷冻设备有限公司 一种具有自动化霜功能的制冷系统
CN106642852A (zh) * 2016-12-30 2017-05-10 中原工学院 一种制冷装置三级复合式快速融霜系统
EP3372919A1 (fr) * 2017-03-02 2018-09-12 Heatcraft Refrigeration Products LLC Dégivrage par gaz chaud dans un système de refroidissement
US10767906B2 (en) 2017-03-02 2020-09-08 Heatcraft Refrigeration Products Llc Hot gas defrost in a cooling system

Also Published As

Publication number Publication date
EP1050726B1 (fr) 2007-01-24
ES2278558T3 (es) 2007-08-16
DE50013996D1 (de) 2007-03-15
DE19920726A1 (de) 2000-11-09
EP1050726A3 (fr) 2002-08-14
ATE352760T1 (de) 2007-02-15
PT1050726E (pt) 2007-03-30

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