WO2009034300A1 - Système de production de glace - Google Patents

Système de production de glace Download PDF

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Publication number
WO2009034300A1
WO2009034300A1 PCT/GB2008/003016 GB2008003016W WO2009034300A1 WO 2009034300 A1 WO2009034300 A1 WO 2009034300A1 GB 2008003016 W GB2008003016 W GB 2008003016W WO 2009034300 A1 WO2009034300 A1 WO 2009034300A1
Authority
WO
WIPO (PCT)
Prior art keywords
defrost
evaporator
reservoir
refrigerant
fluid
Prior art date
Application number
PCT/GB2008/003016
Other languages
English (en)
Inventor
Thomas William Davies
Francois Paul Matthieu Courtot
Original Assignee
University Of Exeter
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 University Of Exeter filed Critical University Of Exeter
Publication of WO2009034300A1 publication Critical patent/WO2009034300A1/fr

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
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • 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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
    • F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
    • F25C5/10—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice using hot refrigerant; using fluid heated by 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • F25B2347/021—Alternate 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
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the 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
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/053—Compression system with heat exchange between particular parts of the system between the storage receiver and another part of the system
    • 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
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2301/00—Special arrangements or features for producing ice
    • F25C2301/002—Producing ice slurries

Definitions

  • This invention relates to an evaporator refrigerator system for the production of solid or slurry ice.
  • Ice making systems have been known for some time and a typical example is described in US-A-3,537,274. Their basic function can be seen from Figure 1 , in which a tank 100 contains a water, brine or other suitable liquid, which can be pumped, by pump 200, to distributors 300a to c which create a falling film on to the sides of respective evaporator plate which together form an evaporator head a, b and c.
  • the evaporator plates are connected to a refrigerant circuit or condensing pack R, so that films of ice are formed on them. The intention is that the resulting ice should then descend into the tank 100 so that the tank 100 has an ice slurry in it.
  • the ice or ice slurry may simply slip off the surface of the evaporator plates 400, but normally a de-frost cycle is required to harvest the ice and restore thermal efficiency.
  • the ice that builds up on the plate can slide into the tank during defrost.
  • a common method of effecting a defrost is to temporarily divert hot compressor exhaust gas to the evaporators, this defrost method is subject to important energy losses.
  • a less common but more energy efficient method is the warm liquid defrost.
  • Flooded evaporator systems are also known in which excess unboiled refrigerant leaving the evaporators is separated from the vapour in a low pressure receiver and is recirculated to the evaporator head.
  • At least some embodiments of the invention provide more energy efficient approaches.
  • the invention consists in an ice making system including a plurality of evaporators, a cooling circuit for circulating the refrigerant through the evaporators and a defrost circuit for defrosting at least one evaporator at a time and for circulating fluid through said evaporator to defrost that plate, characterised in that the system includes a reservoir for the defrost fluid and a heat exchanger in a cooling circuit for allowing the defrost fluid to cool the refrigerant prior to it passing through the evaporators.
  • the evaporators may be referred to as an evaporator head.
  • the evaporator head may consist of any practical arrangement of heat exchangers where the liquid to be chilled and frozen is brought into contact with the cold surfaces of the evaporator and where the refrigerant flows in such a way as to chill the evaporator.
  • the evaporator head consists of three vertical plates with internal channels through which refrigerant flows and evaporates. The liquid to be frozen is distributed along the top of each plate and flows down each external side of each plate, falling into a collection tank, from where it can be recirculated or extracted for use.
  • Other evaporator geometries may be used, such as tubes, coils, spiral plates etc and the evaporator head may be submerged in the tank containing the fluid to be frozen such that ice released during defrost floats upwards.
  • the defrost circuit may include a valve system for connecting an evaporator to the reservoir to allow relatively hot fluid to pass from the reservoir to the evaporator and for the liquid refrigerant in the evaporator to flow to the reservoir.
  • the system may include a compressor and condenser connected in series upstream of the reservoir, in which case there may be a liquid receiver, which may be connected downstream of the condenser.
  • the refrigerant can pass through the reservoir when all evaporators are in a refrigerant mode and through the heat exchanger when at least one evaporator is in a defrost mode.
  • the system may be a flooded evaporator system, in which case a low- pressure receiver may be located between the reservoir and the evaporators. Additionally or alternatively the system may include a buffer downstream of the condenser.
  • the defrost circuit may create a thermo-syphon for defrost fluid between the reservoir and the evaporator to be defrosted. It is preferred in this and other embodiments that the refrigerant and the defrost fluid are the same.
  • the invention consists in the method of operating an ice making system including evaporators and incorporating a reservoir for defrost fluids; the method including cooling the refrigerant by passing it through the defrost fluid.
  • the refrigerant and defrost fluid may be in direct contact, in at least some stages of operation.
  • the liquid refrigerant within an evaporator may be returned to the reservoir during defrost, to increase energy efficiency.
  • the invention includes a method of defrosting an evaporator including:
  • Liquid refrigerant released from the evaporator during defrost may be stored in the reservoir to cool the circulating refrigerant.
  • the invention consists in a method of detecting the ice loading of an evaporator including: applying a mechanical excitation to the evaporator; and detecting the resultant vibration of the evaporator to obtain an indication of ice loading.
  • Figure 2a is a diagram of a first embodiment of an ice making system and Figure 2b is a modification thereof;
  • Figure 3a is a corresponding diagram for a flooded evaporator system and Figure 3b is a modification thereof;
  • Figure 4a shows a suction line heat where one heat exchanger is added to the circuit of Figure 2a or Figure 3a and Figure 4b is an modification of Figure 4a.
  • Figure 2a shows how the three evaporator plates 7a are connected to a supply line 13, an exhaust line 14 and a defrost receiver 5, in such a way that any individual plate may be isolated from the condensing pack, which includes compressor 1 , condenser 2 and liquid receiver 3, during defrost by means of an arrangement of pipes and valves.
  • the high pressure liquid refrigerant is supplied to a heat exchanger 4 in receiver 5 by line 13 and then may pass through one or more of the expansion valves 6a, b, c, enters one or more plates 7a,b,c chilling said plates and then returns to the inlet of compressor 1 via line 14.
  • valves 10a,b,c are open and valves 8a,b,c and 9a,b,c are closed.
  • valves 6a and 10a are closed (conveniently sequentially), and valves 8a and 9a are opened, exposing the higher pressure warm liquid in defrost reservoir 5 to the lower pressure environment in plate 7a.
  • the liquid in 5 boils and the vapour passes thermosyphonically to the plate 7a, along line 11, where it condenses and releases heat, thereby defrosting plate 7a.
  • the chilled liquid refrigerant in 7a returns by gravity to reservoir 5 via line 12 where it recuperates and stores sufficient energy from the hot liquid refrigerant passing through heat exchanger or coil 4 to perform a subsequent defrost whilst simultaneously subcooling the liquid passing to the expansion valves via line 13.
  • valves 8a and 9a are closed and valves 6a and 10a are opened and plate 7a returns to freezing mode.
  • the timing and also sequencing of valve operation can be optimised for maximum system efficiency and the plates may be defrosted from the top, the bottom, or from the top and bottom simultaneously.
  • the types of valve which may be employed in the refrigerant flow circuit include check valves, solenoid valves, expansion valves, three-way valves and four-way valves.
  • the duration and frequency of defrost are selected to minimise energy consumption or maximise capacity.
  • the duration of the defrost should be minimised and the frequency optimised.
  • the duration of the defrost is in part determined by storing the appropriate quantity of energy in the defrost receiver 5 prior to transfer of this energy to an individual plate.
  • the thermal capacity of the defrost receiver needs to be matched to the energy requirements for rapid defrost and the release of ice from the evaporator surfaces needs to be detected so that the evaporator can be returned to freezing mode without further delay.
  • a variety of means for the detection of ice build up on the evaporator surfaces and for ice release from the evaporator surfaces may be employed.
  • Mechanical excitation of the evaporator and monitoring of the harmonic response may be used to obtain an indication of ice loading and ice release using changes in frequency, amplitude or phase of the vibrations.
  • Attenuation or interaction of electromagnetic waves, such as radio waves, by the ice film may also be used to detect ice accumulation and release.
  • Other means based on changes in optical properties of the evaporator surfaces or ice conductivity effects may also be employed.
  • the frequency of defrost depends mainly on the rate at which ice builds up on the evaporator surfaces and the consequent fall in thermal efficiency of the overall heat exchange process in the evaporator head. Loss of efficiency caused by ice film growth will vary with evaporator head design so that defrost frequency is specific to each variant of the present invention, and optimal frequency must be determined by experimentation.
  • FIG. 2b shows a modification of the refrigeration circuit which may be used in cases where lubricating oil return is problematic.
  • valves 15 and 17 are closed and valve 16 is open so that the warm liquid refrigerant from receiver 3 passes directly through coil 4 where it is cooled whilst warming the contents of reservoir 5.
  • the warm liquid refrigerant passing through line 13 is diverted by valves in order to flush any accumulated oil from reservoir 5. This is achieved by closing valve 16, and opening valves 15 and 17. This arrangement also allows faster energy recuperation in the defrost reservoir.
  • a low pressure receiver 18 links the condensing pack to the evaporator head.
  • vapour leaving receiver 18 passes via line 20 to the compressor 1 and warm liquid refrigerant leaving the condenser 2 enters liquid receiver 3 from where it flows through line 13 to coil 4 located in defrost receiver 5.
  • the cooled liquid then passes along line 21 via expansion valve 19 to receiver 18.
  • Expansion valve 19 is controlled to maintain the liquid level in receiver 18.
  • valves 6a, b, c and 10a,b,c are open valves 8a,b,c and 9a,b,c are closed so that liquid refrigerant from receiver 18 flows freely by gravity, or is pumped, via line 22, to the base of plates 7a,b,c and floods the plates and boils.
  • the two-phase (liquid/vapour) refrigerant mixture leaving the plates via line 14 enters the low pressure receiver 18.
  • valves 6a and 10a are closed and valves 8a and 9a are opened, allowing a thermosyphon flow of refrigerant from defrost reservoir 5 into plate 7a, thus defrosting 7a as previously described.
  • Figure 3b shows an alternative arrangement for connecting the defrost reservoir into the refrigeration circuit when oil flushing is required and the operation is the same as that already described in embodiment 1.
  • FIG 4 shows a third embodiment of the present invention, in which a suction line heater exchanger 23 is included in the refrigeration circuit of either Figure 2 or Figure 3.
  • This is a standard unit which allows subcooling of the hot liquid in line 13 by indirect contact in coil 24 with the cold suction gas leaving the evaporator head along line 14 ( Figure 2) or subcooling of the hot liquid in line 21 by cold suction gas in line 20 ( Figure 3).
  • This unit sometimes referred to as an accumulator, also serves to trap any liquid in the suction line before the suction gas enters the compressor 1.
  • the evaporator plates are designed to prevent oil accumulation during normal functioning.
  • the liquid receiver 3 is principally provided to buffer the refrigerant from a plate during defrost. It is conveniently placed in the condensing pack but may be elsewhere in the circuit or its function may be combined with another receiver in the circuit.
  • the energy used for the defrost is taken from the sub cooling of the warm liquid refrigerant leaving the condenser.
  • the energy used for the defrost is continuously collected and stored in the form of the temperature of a volume of liquid refrigerant (defrost receiver) placed at a lower level than the plates.
  • defrost receiver placed at a lower level than the plates.
  • the defrost is performed by opening the high pressure warm defrost receiver to the lower pressure cold frosted plate. Pressure differences quickly drive the warm refrigerant into the cold plate, gravity brings the cold liquid refrigerant back into the defrost receiver.
  • a heat exchange coil placed inside the defrost receiver exchanges heat between the warm liquid leaving the condenser and the refrigerant stored in the defrost receiver.
  • a thermosyphon establishes a heat flux, through this coil, between the cold defrosting plate and the warm liquid refrigerant leaving the condenser.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

Cette invention se rapporte à un système de production de glace comprenant plusieurs évaporateurs (7a,b,c), un circuit de refroidissement destiné à faire circuler un fluide frigorigène à travers l'appareil (7a,b,c) et un circuit de dégivrage destiné à dégivrer au moins un évaporateur (7a), au moment de faire circuler un fluide à travers ledit évaporateur (7a), afin de le dégivrer. Le système comprend un réservoir (5) pour fluide de dégivrage et un échangeur thermique (4) se trouve dans le circuit de refroidissement pour permettre au liquide de dégivrage de refroidir le fluide frigorigène avant son passage à travers l'appareil (7a,b,c).
PCT/GB2008/003016 2007-09-14 2008-09-05 Système de production de glace WO2009034300A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB0717908.8A GB0717908D0 (en) 2007-09-14 2007-09-14 An ice making system
GB0717908.8 2007-09-14
US99179107P 2007-12-03 2007-12-03
US60/991,791 2007-12-03

Publications (1)

Publication Number Publication Date
WO2009034300A1 true WO2009034300A1 (fr) 2009-03-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003016 WO2009034300A1 (fr) 2007-09-14 2008-09-05 Système de production de glace

Country Status (2)

Country Link
GB (1) GB0717908D0 (fr)
WO (1) WO2009034300A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009054370A1 (de) 2009-11-16 2011-05-19 Ingenieurtechnik-Vritex Gmbh Vorrichtung und Verfahren zur Herstellung von pumpfähigem Eis und Verfahren zur Herstellung der Vorrichtung
DE102010018497A1 (de) 2010-04-22 2011-10-27 Hochschule Karlsruhe-Technik Und Wirtschaft Verfahren und Vorrichtung zur Erzeugung von Eisbrei
GB2487975A (en) * 2011-02-11 2012-08-15 Frigesco Ltd Flash defrost system
WO2012109360A3 (fr) * 2011-02-09 2012-11-08 Control Products, Inc. Système, appareil et procédé de détection de glace
WO2013092236A2 (fr) 2011-12-23 2013-06-27 Hochschule Karlsruhe - Technik Und Wirtschaft Dispositif et procédé de production de bouillie de glace
DE102012218349A1 (de) 2012-10-09 2014-04-10 Hochschule Karlsruhe-Technik Und Wirtschaft Vorrichtung und Verfahren zur Erzeugung von Eisbrei
CN104344586A (zh) * 2013-07-26 2015-02-11 上海铁东电力技术有限公司 一种双蒸发器制冷系统
WO2015093233A1 (fr) * 2013-12-17 2015-06-25 株式会社前川製作所 Système de dégivrage pour dispositif de réfrigération et unité de refroidissement
JP2016142481A (ja) * 2015-02-03 2016-08-08 三菱重工冷熱株式会社 冷凍装置、および負荷冷却器のデフロスト方法
WO2017161425A1 (fr) * 2016-03-24 2017-09-28 Scantec Refrigeration Technologies Pty. Ltd. Système de dégivrage
CN108731292A (zh) * 2018-07-09 2018-11-02 广东申菱环境系统股份有限公司 一种热虹吸式融霜双通道油气回收冷凝机组

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US4646539A (en) * 1985-11-06 1987-03-03 Thermo King Corporation Transport refrigeration system with thermal storage sink
EP0992749A2 (fr) * 1998-10-06 2000-04-12 Manitowoc Foodservice Group, Inc. Machine de fabrication de glace avec dégivrage par gaz froid
EP1347255A1 (fr) * 2002-03-20 2003-09-24 Samsung Electronics Co. Ltd. Dégivrage d'un évaporateur de pompe à chaleur
GB2405688A (en) * 2003-09-05 2005-03-09 Applied Design & Eng Ltd Refrigerator

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Publication number Priority date Publication date Assignee Title
US4646539A (en) * 1985-11-06 1987-03-03 Thermo King Corporation Transport refrigeration system with thermal storage sink
EP0992749A2 (fr) * 1998-10-06 2000-04-12 Manitowoc Foodservice Group, Inc. Machine de fabrication de glace avec dégivrage par gaz froid
EP1347255A1 (fr) * 2002-03-20 2003-09-24 Samsung Electronics Co. Ltd. Dégivrage d'un évaporateur de pompe à chaleur
GB2405688A (en) * 2003-09-05 2005-03-09 Applied Design & Eng Ltd Refrigerator

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009054370B4 (de) 2009-11-16 2019-08-22 Vritex Technologies KG Vorrichtung und Verfahren zur Herstellung von pumpfähigem Eis
DE102009054370A1 (de) 2009-11-16 2011-05-19 Ingenieurtechnik-Vritex Gmbh Vorrichtung und Verfahren zur Herstellung von pumpfähigem Eis und Verfahren zur Herstellung der Vorrichtung
DE102010018497A1 (de) 2010-04-22 2011-10-27 Hochschule Karlsruhe-Technik Und Wirtschaft Verfahren und Vorrichtung zur Erzeugung von Eisbrei
WO2011131771A2 (fr) 2010-04-22 2011-10-27 Hochschule Karlsruhe - Technik Und Wirtschaft Procédé et dispositif de production de coulis de glace
WO2012109360A3 (fr) * 2011-02-09 2012-11-08 Control Products, Inc. Système, appareil et procédé de détection de glace
GB2487975A (en) * 2011-02-11 2012-08-15 Frigesco Ltd Flash defrost system
WO2012107773A3 (fr) * 2011-02-11 2012-11-29 Frigesco Limited Système de dégivrage éclair
GB2495672A (en) * 2011-02-11 2013-04-17 Frigesco Ltd Flash defrost system
RU2582729C2 (ru) * 2011-02-11 2016-04-27 Фриджеско Лимитед Система быстрого размораживания
WO2012107773A2 (fr) 2011-02-11 2012-08-16 Frigesco Limited Système de dégivrage éclair
CN103429974A (zh) * 2011-02-11 2013-12-04 Frigesco有限公司 闪蒸除霜系统
GB2495672B (en) * 2011-02-11 2013-12-25 Frigesco Ltd Flash defrost system
AU2012215130B2 (en) * 2011-02-11 2017-07-27 Frigesco Limited Flash defrost system
WO2013092236A2 (fr) 2011-12-23 2013-06-27 Hochschule Karlsruhe - Technik Und Wirtschaft Dispositif et procédé de production de bouillie de glace
DE102011089868A1 (de) 2011-12-23 2013-06-27 Hochschule Karlsruhe-Technik Und Wirtschaft Vorrichtung und Verfahren zur Erzeugung von Eisbrei
DE102012218349A1 (de) 2012-10-09 2014-04-10 Hochschule Karlsruhe-Technik Und Wirtschaft Vorrichtung und Verfahren zur Erzeugung von Eisbrei
DE102012218349B4 (de) * 2012-10-09 2016-01-28 Hochschule Karlsruhe-Technik Und Wirtschaft Vorrichtung und Verfahren zur Erzeugung von Eisbrei
CN104344586A (zh) * 2013-07-26 2015-02-11 上海铁东电力技术有限公司 一种双蒸发器制冷系统
WO2015093234A1 (fr) * 2013-12-17 2015-06-25 株式会社前川製作所 Système de dégivrage pour dispositif de réfrigération et unité de refroidissement
CN105473960B (zh) * 2013-12-17 2017-07-18 株式会社前川制作所 冷冻装置的除霜系统以及冷却单元
CN105283719A (zh) * 2013-12-17 2016-01-27 株式会社前川制作所 冷冻装置的除霜系统以及冷却单元
JP5944057B2 (ja) * 2013-12-17 2016-07-05 株式会社前川製作所 冷凍装置のデフロストシステム及び冷却ユニット
JP5944058B2 (ja) * 2013-12-17 2016-07-05 株式会社前川製作所 冷凍装置の昇華デフロストシステム及び昇華デフロスト方法
WO2015093233A1 (fr) * 2013-12-17 2015-06-25 株式会社前川製作所 Système de dégivrage pour dispositif de réfrigération et unité de refroidissement
JP6046821B2 (ja) * 2013-12-17 2016-12-21 株式会社前川製作所 冷凍装置のデフロストシステム及び冷却ユニット
CN105473960A (zh) * 2013-12-17 2016-04-06 株式会社前川制作所 冷冻装置的除霜系统以及冷却单元
WO2015093235A1 (fr) * 2013-12-17 2015-06-25 株式会社前川製作所 Système de dégivrage par sublimation pour dispositifs de réfrigération et procédé de dégivrage par sublimation
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JP2016142481A (ja) * 2015-02-03 2016-08-08 三菱重工冷熱株式会社 冷凍装置、および負荷冷却器のデフロスト方法
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US10712078B2 (en) 2016-03-24 2020-07-14 Scantec Refrigeration Technologies Pty. Ltd. Defrost system
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