EP2625478A2 - Appareil frigorifique comprenant un accumulateur de froid - Google Patents

Appareil frigorifique comprenant un accumulateur de froid

Info

Publication number
EP2625478A2
EP2625478A2 EP11757658.7A EP11757658A EP2625478A2 EP 2625478 A2 EP2625478 A2 EP 2625478A2 EP 11757658 A EP11757658 A EP 11757658A EP 2625478 A2 EP2625478 A2 EP 2625478A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
interior
evaporator
storage material
refrigerating appliance
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
EP11757658.7A
Other languages
German (de)
English (en)
Other versions
EP2625478B1 (fr
Inventor
Bertram Wolf
Frank Bailly
Jörg STELZER
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2625478A2 publication Critical patent/EP2625478A2/fr
Application granted granted Critical
Publication of EP2625478B1 publication Critical patent/EP2625478B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration systems
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine

Definitions

  • the invention relates to a refrigeration device, in particular a household refrigerator, which has a cold storage.
  • DE 38 06 205 C2 discloses a refrigerator with a coolable interior and a separate from the coolable interior main evaporator space in which a
  • Main evaporator is arranged.
  • a cold storage is provided, which is enclosed in a heat-insulating material and surrounds a cold storage evaporator.
  • a thermo sensor the two
  • Evaporator be connected to allow a heat transfer.
  • Refrigerator can be operated so that heat is exchanged between the cold storage and the main evaporator.
  • Object of the present invention is an alternative refrigeration device with a
  • the object of the invention is achieved by a refrigeration device, having a
  • Inner container with a coolable interior for storing refrigerated goods, one
  • An evaporator for cooling the storage material of the cold accumulator, and a second refrigeration cycle comprising a heat exchanger disposed within the interior, which is coupled to the storage material of the cold accumulator.
  • a refrigeration device Under a refrigeration device is in particular a household refrigeration appliance understood, ie a refrigeration appliance for household management in households or possibly in the
  • Catering area is used, and in particular serves to store food and / or drinks in household quantities at certain temperatures, such as a refrigerator, a freezer, a fridge-freezer, a freezer or a wine storage cabinet.
  • the refrigerator according to the invention therefore comprises the coolable interior and the first refrigeration cycle, preferably as a condenser, a compressor and the evaporator comprehensive compressor refrigeration cycle can be formed.
  • the interior is not cooled by the evaporator. This is rather intended to cool the memory material of the cold accumulator.
  • the evaporator is coupled to the storage material of the cold storage. In order to cool the memory material as well as possible, it is especially with the
  • Memory material thermally conductively connected, preferably completely from
  • the refrigeration device according to the invention comprises the second refrigeration cycle, which comprises the heat exchanger. This is within the coolable interior of the second refrigeration cycle.
  • Refrigerating appliance e.g. on a wall of the interior, arranged or integrated in one of the walls, and is coupled to the memory material.
  • the interior is cooled via the heat exchanger and the storage material.
  • the cold storage at least its storage material, thermally isolated from the interior.
  • This can e.g. be realized by the cold storage is separated by an insulation from the interior.
  • the cold storage may also be arranged inside the interior, but e.g. be surrounded by an insulation.
  • the cold storage can also be arranged completely separate from the inner container.
  • Refrigeration circuit may be formed as a refrigerant circuit, which has the heat exchanger and connected to the heat exchanger, heat-conductively connected to the storage material of the cold storage further heat exchanger, so from
  • Heat exchanger flows into the heat exchanger.
  • the other heat exchanger is
  • the interior can be cooled in a relatively simple manner. Thus, it is possible to cool the interior even when the first refrigeration cycle is not in operation, because, for example, no electrical energy an electrical power supply network for the refrigeration device according to the invention is available.
  • the evaporator is thermally conductively connected to the further heat exchanger.
  • the evaporator can in particular touch the further heat exchanger. This will be a
  • Heat exchanger allows. This makes it possible that the refrigerant in the further heat exchanger is also cooled directly via the evaporator. This results in the operation of the first refrigeration cycle improved cooling of the other
  • the refrigerant circuit has a circulating pump which is set up to pump the refrigerant from the further heat exchanger to the heat exchanger so that the refrigerant flows through the heat exchanger and back to the further heat exchanger. Due to the
  • Circulation pump can improve the coming of the other heat exchanger, cooled refrigerant flows through the heat exchanger, whereby the cooling of the interior is improved.
  • Refrigeration circuit be designed such that the memory material through the
  • Heat exchanger is able to flow.
  • the storage material does not cool refrigerant via a further heat exchanger, but can flow directly through the heat exchanger arranged in the interior.
  • the storage material used can be a mushy and therefore optionally also pumpable storage material mixture, which is also referred to as "slurry.”
  • the second refrigeration cycle can comprise a circulating pump which is set up to pump the storage material through the heat exchanger the cooled storage material improves flow through the heat exchanger, whereby the cooling of the interior is improved.
  • the refrigerator according to the invention can be connected to the circulation pump
  • Have control device which is adapted to control the circulation pump for regulating the temperature of the interior. Is e.g. a higher cooling necessary, then the controller can turn on the circulation pump.
  • the refrigerator according to the invention may comprise a further evaporator, which is thermally connected to the interior to cool the interior.
  • the control device may then preferably be set up to control the circulation pump for cooling the interior only if no electrical energy is available from an electrical supply network for the refrigeration device and otherwise to cool the interior exclusively via the further evaporator.
  • the further evaporator can in particular within the interior of the
  • a refrigerating appliance in particular designed as a household refrigerating appliance, with two refrigerating circuits and a PCM tank or, in general, a cold storage is provided.
  • the PCM tank or the cold storage is used in the frozen state as a cold accumulator.
  • the PCM tank or the cold storage may preferably be removed from the refrigerator interior, e.g. be separated by an additional insulation, which can be cooled or frozen largely independent of the interior temperature.
  • the PCM tank / the cold storage could also be located in a container completely separated from the refrigeration appliance according to the invention or positioned at any point in the refrigeration appliance.
  • Substances or mixtures of substances which have a melting point (or phase change point) below the desired interior temperature can be used as the PCM material or storage material. These are for example
  • the evaporator of the primary refrigeration cycle or the first refrigeration cycle in household refrigerators, preferably a cold steam compression circuit
  • the evaporator of the primary refrigeration cycle or the first refrigeration cycle in household refrigerators, preferably a cold steam compression circuit
  • the first refrigeration cycle in household refrigerators, preferably a cold steam compression circuit
  • the control of the interior temperature is preferably carried out via the secondary circuit, which is filled depending on the embodiment of the refrigerator according to the invention with a suitable fluid for heat or cold transport.
  • a suitable fluid for heat or cold transport can be pumped from the heat exchanger in the other heat exchanger.
  • the fluid can absorb heat from the interior air, which can then be transferred after the return of the fluid in the other heat exchanger in particular to the PCM material or storage material or optionally directly to the refrigerant in the primary circuit.
  • the refrigerator interior temperature can be controlled.
  • the additional heat exchanger and the fluid in the secondary circuit can be dispensed with.
  • a PCM PCM
  • Material or storage material is preferably a pasty mixture of frozen and non-frozen components of the PCM material or generally the
  • slurry This pulpy and therefore pumpable PCM mixture is referred to as "slurry”. This can be cooled directly from the primary circuit in the PCM tank or in the cold storage. To cool the refrigerator interior, the PCM slurry, i. E. optionally pumped the storage material from the PCM tank or cold storage in the heat exchanger. Under
  • Heat absorption can thaw the frozen components of the slurry and extract heat from the interior.
  • the thawed PCM slurry is subsequently
  • Fig. 1 is a household refrigeration appliance in a sectional view and Figures 2, 3 each show another household refrigeration appliance in a sectional view.
  • Fig. 1 shows a household refrigerator 1 as an example of a refrigerator in a sectional view.
  • the household refrigerator 1 has an inner container 2 with a coolable interior 3.
  • the coolable interior 3 is provided to store refrigerated goods.
  • a door leaf 4 is hinged so that the interior 3 is accessible.
  • the coolable interior 3 may be e.g. around a cold room, e.g. to temperatures around 10 ° C, or to act on a freezer room
  • a cold storage 5 is arranged in the lower part of the inner container 2, which is thermally separated by an insulation or a heat-insulating wall 6 from the coolable interior 3.
  • the cold storage 5 can also completely from the remaining household refrigerator 1, in particular from
  • Inner container 2 may be arranged separately or be arranged thermally insulated within the interior 3.
  • a memory material 7 a so-called PCM (phase change material) is arranged.
  • PCM phase change material
  • Such a storage material 7 is known in the art in principle and is intended to store cold.
  • substances or substance mixtures which have a melting point (or phase change point) below the desired temperature of the coolable interior 3 are used as the storage material 7.
  • Suitable storage materials 7 are e.g. Soloitesen with a
  • the domestic refrigeration appliance 1 further comprises a compressor refrigeration cycle comprising a condenser 8, an evaporator 9 and a compressor 10.
  • the compressor refrigeration cycle is designed in particular as a cold steam compression circuit and is supplied by means of an electric power supply network, not shown, with electrical energy.
  • the evaporator 9 is thermally conductively connected to the cold storage 5, in particular, the evaporator 9 is disposed within the cold accumulator 5 and of the
  • the compressor refrigeration cycle may e.g. be connected to a control device of the household refrigerating appliance 1, not shown, to be turned on and off as needed, to cool the storage material 7 of the cold accumulator 5.
  • the household refrigerating appliance 1 has a compressor-less refrigerant refrigerant circuit, which comprises a first heat exchanger 1 1, a second heat exchanger 12 connected to the first heat exchanger 11 and a circulating pump 13.
  • the second heat exchanger 12 is thermally coupled to the cold storage 5.
  • the second heat exchanger 12 is also thermally conductive connected to the evaporator 9 of the compressor refrigeration cycle. This is realized in the case of the present embodiment, characterized in that the second heat exchanger 12 is located within the cold accumulator 5 and of the
  • Memory material 7 is surrounded, that is directly in contact with the memory material 7.
  • the first heat exchanger 11 is thermally coupled to the coolable interior 3. It is arranged in particular within the coolable interior 3. He can
  • the first heat exchanger 11 may also be integrated in one of the walls of the inner container 2.
  • the two heat exchangers 1 1, 12 comprehensive refrigeration cycle is with a
  • suitable fluid for heat or cold transport filled is arranged such that the cooled fluid from the second heat exchanger 12 by means of the circulation pump 13 to the first heat exchanger 1 1 can be transported.
  • the circulating pump 13 is connected, for example, to the control device of the household refrigerating appliance 1, which for example turns on and off the circulating pump 13 on the basis of a setpoint temperature of the interior 3 and on the basis of a measured or determined actual temperature of the interior 3. If the circulating pump 13 is turned on, then it pumps this from the storage material 7 and optionally from the evaporator 9, located in the second heat exchanger 12 fluid in the first heat exchanger 11.
  • the fluid heat from the air of the coolable interior 3 record which then after the Return transport of the fluid in the second heat exchanger 12 to the storage means 7 or directly to the refrigerant in the compressor refrigeration cycle can be transferred via the evaporator 9.
  • the temperature of the interior 3 can be adjusted or even regulated.
  • domestic refrigerator 1 is not supplied with electrical energy from the power grid, then, in the operation of the household refrigerator 1, the cooled, possibly the frozen storage material 7, the heat from the fluid and thus from the
  • the relatively low electrical power requirement of the circulation pump 13 and the control device can be covered by a rechargeable, relatively small battery, not shown, whereby a completely mains independent operation of the household refrigerator 1 with relatively low power consumption from the battery over a certain period is possible.
  • Fig. 2 shows another household refrigerator 21 as an example of a refrigerator in a sectional view.
  • components of the domestic refrigeration appliance 21 shown in FIG. 2 which are substantially identical in construction and function to components of the household refrigerating appliance shown in FIG. 1, are given the same reference numerals.
  • the household refrigerating appliance 21 shown in FIG. 2 differs essentially from the household refrigerating appliance 1 shown in FIG. 1 by an additional one
  • Evaporator 15 which is provided, if necessary, the interior 3 to cool directly.
  • the additional evaporator 15 is, for example, within the interior 3, for example on the Rear wall 14 of the inner container 3 is arranged or integrated into this. Accordingly, the interior 3 can be additionally or alternatively cooled by means of the additional evaporator 15. In particular, it is provided, the interior 3 by means of
  • the additional evaporator 15 is part of a compression refrigeration cycle, e.g.
  • This compression refrigeration cycle can be controlled by the control device of the household refrigerator 21 to regulate the temperature of the interior 3 in particular.
  • the additional evaporator 15 is connected by means of a 2-way valve 16 to the compression refrigeration cycle, which also includes the evaporator 9 for the cold storage 5.
  • the 2-way valve 16 is connected to the control device, for example, and is set up to supply either the evaporator 9 and / or the additional evaporator 15 with refrigerant of the compressor refrigeration cycle as needed.
  • Fig. 3 shows another household refrigerator 31 as an example of a refrigeration device in a sectional view.
  • components of the household refrigerating appliance 31 shown in FIG. 3, which are substantially identical in construction and function to components of the household refrigerating appliance 1 shown in FIG. 1, are given the same reference numerals.
  • the household refrigerating appliance 31 shown in FIG. 3 likewise comprises the cold storage 5, which is thermally separated from the coolable interior 3 by means of an insulation or the heat-insulating wall 6.
  • the storage material 7 is also arranged, which is carried out in the case of the present embodiment as a pulpy mixture of frozen and non-frozen components. This pulpy and therefore pumpable PCM mixture is also referred to as "slurry".
  • the household refrigerating appliance 31 also comprises the compressor refrigeration cycle comprising the condenser 8, the evaporator 9 and the compressor 10.
  • the evaporator 9 is also thermally conductive with the Cold storage 5 connected, in particular, the evaporator 9 is within the
  • Cold storage 5 arranged and surrounded by the storage material 7, so is directly with the memory material 7 in contact.
  • the household refrigerator 31 does not have the compressor-less refrigerant refrigerant circuit of the household refrigerators 2, 21 shown in Figures 1 and 2.
  • the heat exchanger 32 is thermally coupled to the coolable interior 3. It is arranged in particular within the coolable interior 3, and is preferably arranged on a wall of the inner container 2 directed towards the interior 3, in particular on the rear wall 14 of the inner container 2. One end of the heat exchanger 32 is connected to the circulation pump 33 and the other end is connected via a line with the
  • Heat exchanger 32 is connected, is also connected to a line with the cold storage.
  • the circulation pump 33 in the operation of the
  • the cooled storage material 7 from the cold storage 7 through the heat exchanger 32 can pump.
  • the control of the temperature of the coolable interior 3 is effected via the heat exchanger 32.
  • the circulation pump 33 is e.g. connected to the control device of the household refrigerator 31, for example, the circulation pump 33 due to a target temperature of the interior 3 and due to a measured or determined actual temperature of the interior 3 on demand and off. If the circulation pump 33 is turned on, then this storage material 7 pumps into the heat exchanger 32.
  • the circulation pump 33 is turned on, then this storage material 7 pumps into the heat exchanger 32.
  • Storage material 7 absorb heat from the air of the coolable interior 3, which is then again cooled after the return of the storage material 7 in the cold storage 7 by means of the evaporator 9. Depending on whether more or less storage material 7 is pumped into the heat exchanger 32, the temperature of the interior 3 can be adjusted or even regulated. If the household refrigerator 31 is operated independently of the mains, that is
  • Domestic refrigerator 31 is not supplied with electrical energy from the power grid, then in the operation of the household refrigerator 31, the cooled
  • the household refrigerating appliance 31 shown in FIG. 3 may also comprise the further evaporator 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne un appareil frigorifique (1, 21, 31) qui comprend un récipient interne (2) présentant un compartiment interne (3) pouvant être réfrigéré, destiné à l'entreposage de denrées réfrigérées, un accumulateur de froid (5) comprenant un matériau accumulateur (7), un premier circuit frigorifique comportant un évaporateur (9) pour refroidir le matériau accumulateur (7) de l'accumulateur de froid (5) et un second circuit frigorifique qui comporte un échangeur thermique (11, 32) placé dans le compartiment interne (3), qui est raccordé au matériau accumulateur (7) de l'accumulateur de froid.
EP11757658.7A 2010-10-04 2011-09-20 Appareil frigorifique comprenant un accumulateur de froid Not-in-force EP2625478B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010041951A DE102010041951A1 (de) 2010-10-04 2010-10-04 Kältegerät mit einem Kältespeicher
PCT/EP2011/066292 WO2012045574A2 (fr) 2010-10-04 2011-09-20 Appareil frigorifique comprenant un accumulateur de froid

Publications (2)

Publication Number Publication Date
EP2625478A2 true EP2625478A2 (fr) 2013-08-14
EP2625478B1 EP2625478B1 (fr) 2018-09-19

Family

ID=44651846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11757658.7A Not-in-force EP2625478B1 (fr) 2010-10-04 2011-09-20 Appareil frigorifique comprenant un accumulateur de froid

Country Status (3)

Country Link
EP (1) EP2625478B1 (fr)
DE (1) DE102010041951A1 (fr)
WO (1) WO2012045574A2 (fr)

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Publication number Priority date Publication date Assignee Title
DE102012207682A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit drei Temperaturerfassungssensoren und Verfahren zum Betreiben eines Haushaltskältegeräts
DE102012207687A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einem mit dem Gefrierfach gekoppelten Kältespeicher
DE102012207679A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit zumindest einem kühlbaren Innenraum zum Lagern von Kältegut
DE102012207680A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einstellbarem Gefrierbetriebsmodus
DE102012207683A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit Wärmetauscher und Verdampfer am Gefrierfach
DE102012207686A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit zwei kühlbaren Innenräumen und jeweils einem Kältespeicher
DE102012207684A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit zwei über einen Luftkanal verbundenen Innenräumen und zumindest einem Kältespeicher
DE102012207685A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einem Kältespeicher als Trennbereich zwischen zwei Innenräumen
DE102012207681A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit Temperaturerfassungssensoren und Verfahren zum Betreiben eines derartigen Haushaltskältegeräts
NL2011076C2 (en) * 2013-07-01 2015-01-05 Njord Holding B V Refrigerated storage compartment or container, and truck, van, trailer or storage system having such refrigerated storage compartment/container as a part thereof.
ES2603065T3 (es) 2013-12-09 2017-02-23 Tutech Innovation Gmbh Dispositivo refrigerador para la evacuación de una corriente de calor
ITUA20163308A1 (it) * 2016-05-10 2017-11-10 Bonetto S R L Contenitore isotermico per il trasporto di alimenti deperibili
DE102017109357B4 (de) 2017-05-02 2022-04-28 Viessmann Refrigeration Solutions Gmbh Kühlmöbel mit Speicher und Kühlsystem

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Also Published As

Publication number Publication date
DE102010041951A1 (de) 2012-04-05
WO2012045574A3 (fr) 2012-12-27
EP2625478B1 (fr) 2018-09-19
WO2012045574A2 (fr) 2012-04-12

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