EP3051231B1 - Appareil réfrigérateur et/ou congélateur - Google Patents

Appareil réfrigérateur et/ou congélateur Download PDF

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Publication number
EP3051231B1
EP3051231B1 EP15194244.8A EP15194244A EP3051231B1 EP 3051231 B1 EP3051231 B1 EP 3051231B1 EP 15194244 A EP15194244 A EP 15194244A EP 3051231 B1 EP3051231 B1 EP 3051231B1
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EP
European Patent Office
Prior art keywords
cooled space
cooling
heat exchanger
space
refrigeration
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.)
Active
Application number
EP15194244.8A
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German (de)
English (en)
Other versions
EP3051231A1 (fr
Inventor
Jochen Hiemeyer
Martin Kerstner
Michael Freitag
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.)
Liebherr Hausgeraete Lienz GmbH
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Lienz GmbH
Liebherr Hausgeraete Ochsenhausen GmbH
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Filing date
Publication date
Priority claimed from DE102015006559.9A external-priority patent/DE102015006559A1/de
Application filed by Liebherr Hausgeraete Lienz GmbH, Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Lienz GmbH
Publication of EP3051231A1 publication Critical patent/EP3051231A1/fr
Application granted granted Critical
Publication of EP3051231B1 publication Critical patent/EP3051231B1/fr
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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation

Definitions

  • the present invention relates to a refrigerator and / or freezer that cools an interior of the refrigerator and / or freezer with the aid of several thermoelectric elements.
  • thermoelectric elements In the prior art, the production of refrigerators and / or freezers based on thermoelectric elements is considered to be of little promise because such a device has poor efficiency and high demands on the external heat exchanger for removal of those produced by the thermoelectric element or elements Waste heat calls.
  • thermoelectric elements So-called multi-stage Peltier elements are known from Peltier technology, which treats thermoelectric elements, with which it is possible to achieve larger temperature differences than with single-stage Peltier elements.
  • the outer Peltier element is dimensioned so that it can pump off the waste heat from the next inner Peltier element. Due to the low efficiency of Peltier elements, a significantly higher cooling capacity of the outer Peltier element is required.
  • the heat exchanger for the removal of the waste heat is the critical variable.
  • a locally installed two-stage Peltier element would generate too much waste heat, which would create a large temperature gradient when it was removed. This large temperature gradient would conflict with the effect of the Peltier element.
  • the heat-insulated container has at least one temperature-controlled interior, which can be cooled or heated, so that a temperature below or above the ambient temperature of e.g. 21 ° C results.
  • DE 11 34 395 B relates to a refrigerator which is equipped with two cooling devices which are assigned to two refrigerated goods compartments of different temperature, of which one compartment is designed as a freezer compartment and which is separated from the normal refrigerating compartment by a flap and by an intermediate wall accommodating an electrothermal cooling device such that the heat-emitting side of the electrothermal cooling device built into the partition protrudes into the normal cooling compartment.
  • the object of the invention is to provide a refrigerator and / or freezer which is cooled with the aid of thermoelectric elements without attaching too much importance to the prejudices prevailing in the prior art.
  • thermoelectric element makes it possible to dissipate the heat of the thermoelectric element particularly advantageously with the aid of the temperature level prevailing in the first cooling space. This makes it possible to control the critical size of the waste heat generated by the thermoelectric element.
  • a vacuum element can preferably be used as the insulation element, the outer boundaries of which consist of a high barrier film which closes the inner region defined by the high barrier film in a diffusion-tight manner.
  • a vacuum element is typically called a vacuum insulation body.
  • a particularly preferred embodiment is one in which thermal insulation, which consists of a full vacuum system, is arranged between the inner wall of the container delimiting the interior and the outer skin of the container.
  • thermal insulation that consists exclusively or predominantly of an evacuated area that is filled with a core material.
  • the boundary of this area can be formed, for example, by a vacuum-tight film and preferably by a high barrier film.
  • thermal insulation between the inner wall of the container, preferably a device, and the outer skin of the container, preferably a device, only such a film body can be present as thermal insulation, which has a region surrounded by a vacuum-tight film, in which vacuum prevails and in which a core material is arranged.
  • Foaming and / or vacuum insulation panels as thermal insulation or other thermal insulation apart from the full vacuum system between the inside and the outside of the container or device are preferably not provided.
  • This preferred type of thermal insulation in the form of a full vacuum system can be between the wall delimiting the interior and the outer skin of the body and / or between the inside and the outside of the closure element, e.g. a door, flap, cover or the like.
  • the full vacuum system can be obtained in such a way that an envelope made of a gas-tight film is filled with a core material and then vacuum-tight is sealed.
  • both the filling and the vacuum-tight sealing of the casing are carried out at normal or ambient pressure.
  • the evacuation is then carried out by connecting a suitable interface, for example an evacuation socket, which may have a valve, incorporated into the casing to a vacuum pump.
  • a suitable interface for example an evacuation socket, which may have a valve, incorporated into the casing to a vacuum pump.
  • ambient or ambient pressure prevails outside the casing during the evacuation.
  • a vacuum chamber can be dispensed with during the production of the vacuum insulation.
  • a vacuum-tight or diffusion-tight sheathing or a vacuum-tight or diffusion-tight connection or the term high-barrier film is preferably understood to mean a sheathing or a connection or a film by means of which the gas entry into the vacuum insulation body is reduced to such an extent that that caused by gas entry conditional increase in the thermal conductivity of the vacuum insulation body over its service life is sufficiently small.
  • a period of 15 years, preferably 20 years and particularly preferably 30 years, is to be assumed as the life span, for example.
  • the increase in the thermal conductivity of the vacuum insulation body over its service life caused by the introduction of gas is preferably ⁇ 100% and particularly preferably ⁇ 50%.
  • the area-specific gas passage rate of the casing or of the connection or of the high barrier film is preferably ⁇ 10-5 mbar * l / s * m 2 and particularly preferably ⁇ 10-6 mbar * l / s * m 2 (measured in accordance with ASTM D-3985) .
  • This gas passage rate applies to nitrogen and oxygen.
  • gas in particular water vapor
  • there are also low gas passage rates preferably in the range of ⁇ 10-2 mbar * l / s * m 2 and particularly preferably in Range of ⁇ 10-3 mbar * l / s * m 2 (measured according to ASTM F-1249-90). These low gas passage rates preferably achieve the aforementioned slight increases in thermal conductivity.
  • a wrapping system known from the field of vacuum panels are so-called high barrier films.
  • this is preferably understood to mean single-layer or multilayer films (which are preferably sealable) with one or more barrier layers (typically metallic layers or oxide layers, aluminum or an aluminum oxide preferably being used as the metal or oxide), which above requirements (increase in thermal conductivity and / or area-specific gas passage rate) are sufficient as a barrier against the gas entry.
  • barrier layers typically metallic layers or oxide layers, aluminum or an aluminum oxide preferably being used as the metal or oxide
  • thermoelectric element is preferably embodied by a Peltier element, which can form a temperature difference between two surfaces by the supply of current.
  • the two surfaces typically run parallel to one another and are spaced apart from one another.
  • the second cooling space can preferably be used as a freezer compartment.
  • thermoelectric element for cooling the second cooling space is in contact with a heat exchanger which is also in contact with a thermoelectric element for cooling the first cooling space.
  • thermoelectric element for cooling the second cooling space The waste heat from the thermoelectric element for cooling the second cooling space is released to the heat exchanger in regular operation of the refrigerator and / or freezer.
  • the heat exchanger is also in a thermal connection with the cooling side or heat side of the other thermoelectric element for cooling the first cooling space.
  • thermoelectric element for cooling the first cooling space there is more than one thermoelectric element for cooling the first cooling space.
  • the thermoelectric element for cooling the first cooling space is preferably also arranged in an insulating element which surrounds the first cooling space.
  • the thermoelectric element for cooling the first cooling space is not arranged in an area that is arranged between the first cooling space and the second cooling space, but in a region between the first cooling space and an outer wall of the cooling device.
  • thermoelectric element for cooling the first cooling space is in a thermal or physical connection with the outer wall of the refrigerator and / or freezer.
  • the outer wall is used to dissipate any waste heat generated at the thermoelectric element and to dissipate it to the surroundings or to conduct heat required by the thermoelectric element and to draw it from the surroundings.
  • thermoelectric element is arranged in a vacuum body, there is a high barrier film between the outer wall of the device and the waste heat surface or heat absorption surface of the thermoelectric element, but this does not prevent effective heat conduction.
  • the heat exchanger which is connected to both the thermoelectric element for cooling the first and the second cooling space, is the inner container itself or part of the inner container of the first cooling space.
  • a metal in particular an aluminum, is suitable as the material for this heat exchanger.
  • the use of a metal makes it possible to distribute or absorb the waste heat to be dissipated or heat to be absorbed particularly quickly and to cool or heat it with the aid of the temperature prevailing in the first compartment, preferably the first cooling space, or the other thermoelectric elements.
  • thermoelectric element for cooling the second cooling space is arranged within the insulating element, which separates the first cooling space and the second cooling space.
  • the second temperature level is lower than the first temperature level.
  • the refrigerator and / or freezer preferably comprises a heat exchanger which is arranged in the second cooling space and which represents a thermally delimited surface which has a colder or warmer temperature than the air present in the second cooling space.
  • the heat exchanger is arranged in the second cooling space near the thermoelectric element for cooling the second cooling space and is at a lower or higher temperature level than the air present in the second cooling space.
  • thermoelectric element for cooling the second cooling space can be operated in reverse in order to heat the heat exchanger in the second cooling space and to defrost an ice layer that forms on this heat exchanger.
  • the cooling of the second cooling space by means of the thermoelectric element offers a simple and efficient possibility to design the second cooling space as a so-called "no-frost" cooling space. This is achieved by exchanging the polarity on the thermoelectric element so that the heat exchanger heats the second cooling room. As a result, the ice that may have formed on the heat exchanger melts and can be guided out of the second cooling space using suitable means. In this case, it is particularly advantageous to integrate a line for draining condensation and / or condensation water into the heat exchanger into the insulation, in order to discharge the condensation and / or condensation water through the insulation.
  • thermoelectric element can be operated as a heat pump with a very high degree of efficiency, the "no-frost" cycle in this structure is associated with very low energy losses.
  • thermoelectric element for cooling the second cooling space can preferably be operated in reverse in order to heat the heat exchanger in the second cooling space and to defrost an ice layer that forms on this heat exchanger.
  • the refrigerator and / or freezer can be advantageous for the refrigerator and / or freezer if it comprises a fan in the second cooling space in order to support natural convection in the second cooling space.
  • the refrigerator and / or freezer according to the invention is a household appliance or a commercial refrigerator.
  • devices are included that are designed for a stationary arrangement in the household, in a hotel room, in a commercial kitchen or in a bar.
  • it can also be a wine refrigerator.
  • the invention also includes freezers and / or freezers.
  • the devices according to the invention can have an interface for connection to a power supply, in particular to a household power network (for example a plug) and / or a standing or installation aid such as adjustable feet or an interface for fixing within a Have furniture niches.
  • the device can be a built-in device or a free-standing device.
  • the device is designed in such a way that it is supplied with an AC voltage, such as, for example, with a domestic network voltage of e.g. 120 V and 60 Hz or 230 V and 50 Hz can be operated.
  • the device is designed such that it can be operated with direct current of a voltage of, for example, 5 V, 12 V or 24 V.
  • a plug-in power supply is provided inside or outside the device, via which the device is operated.
  • the refrigerator and / or freezer has a cabinet-like shape and has a usable space which is accessible to a user on its front side (in the case of a chest on the top).
  • the usable space can be divided into several compartments, all of which are operated at the same or at different temperatures. Alternatively, only one compartment can be provided.
  • Storage aids such as storage compartments, drawers or bottle holders (in the case of a chest also room dividers) can also be provided within the usable space or a compartment to ensure optimal storage of refrigerated or frozen goods and optimal use of space.
  • the usable space can be closed by at least one door pivotable about a vertical axis.
  • a flap that can be pivoted about a horizontal axis or a sliding lid is conceivable as a closing element.
  • the door or another locking element can be closed are essentially airtight in connection with the body by means of a circumferential magnetic seal.
  • the door or another closure element is preferably also thermally insulated, the heat insulation being able to be achieved by means of a foaming process and, if appropriate, using vacuum insulation panels, or preferably using a vacuum system and particularly preferably using a full vacuum system.
  • door racks can be provided on the inside of the door in order to also be able to store refrigerated goods there.
  • the usable space defined by the inner wall of the container has, for example, a volume of less than 0.5 m 3 , less than 0.4 m 3 or less than 0.3 m 3 .
  • the outer dimensions of the container or device are preferably in the range up to 1 m in terms of height, width and depth.
  • Fig. 1 shows a refrigerator and / or freezer, with a first refrigerator 1, which is arranged above a second refrigerator 2.
  • the two are limited Cold rooms through respective insulation elements 3, which define the dimensions of the cold room.
  • each of the two cold rooms is accessible from the outside via a separate or a common access door (not shown).
  • thermoelectric element 4 for cooling the second cooling space, which is arranged between the first cooling space 1 and the second cooling space 2. With its surfaces, between which a temperature gradient can be created, it is oriented towards the cold rooms. In normal operation, the second cooling space 2 is cooled by the colder surface of the thermoelectric element 4 to a second temperature level, which is lower than the temperature level of the first cooling space 1. The surface of the thermoelectric element 4 that emits waste heat is in contact with a heat exchanger, which at the same time defines the inner container of the first cold room.
  • thermoelectric elements 7 in Fig. 1 a total of 3 pieces which are arranged between the first cooling space 1 and the outside 5 of the refrigerator and / or freezer.
  • the cold side of the thermoelectric elements 7 is oriented toward the first cooling space and is in thermal connection with the heat exchanger, at which the thermoelectric element 4 emits its waste heat for cooling the second cooling space.
  • the warm side of the thermoelectric elements 7 is in (thermal) contact with the outer surface 5 of the refrigerator and / or freezer and releases the waste heat produced to the environment.
  • the reference numeral 8 denotes the heat exchanger in the second cooling space, which has a colder temperature than air in the second cooling space 2.
  • a heat exchanger 8 is first formed Ice layer, provided there is sufficient convection in the second cooling space 2.
  • the Peltier elements (thermoelectric elements) 7 for cooling the first cooling space 1 serve to maintain the temperature level in the first cooling space 1. They give off their cooling capacity to a heat exchanger 6, which is located in the Fig. 1 corresponds to the inner container of the first cold room 1.
  • the Peltier element 4, which is arranged between the first cooling space 1 and the second cooling space 2 also gives off its waste heat to the heat exchanger 6.
  • the size and insulation of the first cooling space 1 and the second cooling space 2 are dimensioned such that the heat exchanger 6 does not generate any waste heat from the Peltier element 4, which is arranged between the first cooling space 1 and the second cooling space 2, without a large temperature difference from the Peltier elements 7 can transport and can be released into the air via the outer skin 5 of the refrigerator and / or freezer.
  • the outer skin 5 of the refrigerator and / or freezer also acts like a heat exchanger, since heat can be given off to the environment.
  • Reference number 9 denotes an evaporation tray for condensed and / or condensed water.

Claims (7)

  1. Appareil de réfrigération et/ou de congélation comprenant une première chambre de réfrigération (1) servant à réfrigérer à un premier niveau de température et une deuxième chambre de réfrigération (2) servant à réfrigérer à un deuxième niveau de température, dans lequel le deuxième niveau de température est inférieur au premier niveau de température, dans lequel la deuxième chambre de réfrigération (2) est séparée par un élément isolant (3) thermoisolant de la première chambre de réfrigération (1), dans lequel des premiers éléments (7) thermoélectriques sont prévus pour réfrigérer la première chambre de réfrigération (1), qui sont disposés dans une zone entre la première chambre de réfrigération et une paroi extérieure (5) de l'appareil, et dans lequel un deuxième élément (4) thermoélectrique servant à réfrigérer la deuxième chambre de réfrigération (2) est disposé à l'intérieur de l'élément isolant (3), qui sépare l'une de l'autre la première chambre de réfrigération (1) et la deuxième chambre de réfrigération (2), et délivre, dans un mode de réfrigération de la deuxième chambre de réfrigération (2), sa chaleur perdue dans la première chambre de réfrigération (1), dans lequel les premiers éléments (7) thermoélectriques fournissent pour réfrigérer la première chambre de réfrigération (1) leur puissance frigorifique à un échangeur de chaleur (6), qui correspond à un contenant intérieur de la première chambre de réfrigération (1), et le deuxième élément (4) thermoélectrique fournit pour réfrigérer la deuxième chambre de réfrigération (2) sa chaleur perdue audit échangeur de chaleur (6).
  2. Appareil de réfrigération et/ou de congélation selon la revendication précédente, dans lequel la première chambre de réfrigération et la deuxième chambre de réfrigération sont disposées dans un boîtier commun de l'appareil.
  3. Appareil de réfrigération et/ou de congélation selon l'une quelconque des revendications précédentes, dans lequel le contenant intérieur est élaboré à partir d'un métal, de préférence d'aluminium.
  4. Appareil de réfrigération et/ou de congélation selon l'une quelconque des revendications précédentes, comprenant en outre un échangeur de chaleur dans la deuxième chambre de réfrigération, qui constitue une surface thermiquement délimitée, qui présente une température plus froide que la deuxième chambre de réfrigération.
  5. Appareil de réfrigération et/ou de congélation selon la revendication 4, dans lequel le deuxième élément thermoélectrique servant à réfrigérer la deuxième chambre de réfrigération peut fonctionner à l'inverse pour réchauffer l'échangeur de chaleur dans la deuxième chambre de réfrigération et pour dégivrer une couche de glace se formant au niveau dudit échangeur de chaleur.
  6. Appareil de réfrigération et/ou de congélation selon la revendication 5, avec en outre un conduit servant à acheminer de l'eau de condensation et/ou de la condensation de l'échangeur de chaleur dans la deuxième chambre de réfrigération en direction d'une enveloppe extérieure de l'appareil de réfrigération et/ou de congélation pour permettre une évaporation de l'eau de condensation et/ou de la condensation, dans lequel de préférence l'eau de condensation et/ou la condensation sont transportées par des forces capillaires au niveau d'un emplacement défini d'un côté extérieur de frigidaire.
  7. Appareil de réfrigération et/ou de congélation selon l'une quelconque des revendications précédentes, comprenant en outre un ventilateur dans la deuxième chambre de réfrigération pour soutenir une convection naturelle dans la deuxième chambre de réfrigération.
EP15194244.8A 2015-01-29 2015-11-12 Appareil réfrigérateur et/ou congélateur Active EP3051231B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015001060 2015-01-29
DE102015006559.9A DE102015006559A1 (de) 2015-01-29 2015-05-20 Wärmeisoliertes Behältnis

Publications (2)

Publication Number Publication Date
EP3051231A1 EP3051231A1 (fr) 2016-08-03
EP3051231B1 true EP3051231B1 (fr) 2020-03-04

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107131715B (zh) * 2017-06-16 2019-10-15 合肥华凌股份有限公司 一种双温酒柜的温度控制方法、控制系统及计算机装置
CN110411133B (zh) * 2018-04-26 2021-04-20 合肥华凌股份有限公司 双温冷藏电器的温度控制方法及装置
CN109737679B (zh) * 2018-11-30 2021-04-23 海尔智家股份有限公司 用于冰箱的中梁及冰箱

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134395B (de) * 1959-06-24 1962-08-09 Siemens Elektrogeraete Gmbh Mit zwei Kuehleinrichtungen ausgeruesteter Kuehlschrank, von denen mindestens eine eine elektrothermische Kuehleinrichtung ist
DE10105963A1 (de) * 2000-09-15 2002-04-11 Samsung Electronics Co Ltd Mikrowellenofen
WO2009003893A2 (fr) * 2007-06-29 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique et procédé pour maintenir une température prédéterminée à une valeur constante dans un compartiment réfrigérant de l'appareil frigorifique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3451107B2 (ja) * 1992-10-05 2003-09-29 株式会社エコ・トゥエンティーワン 電子冷却装置
JP3369349B2 (ja) * 1995-03-02 2003-01-20 株式会社エコ・トゥエンティーワン 熱電変換装置
EP1421323B1 (fr) * 2001-08-27 2008-03-26 Rick C. Hunter Systeme de recipient a barrieres thermiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134395B (de) * 1959-06-24 1962-08-09 Siemens Elektrogeraete Gmbh Mit zwei Kuehleinrichtungen ausgeruesteter Kuehlschrank, von denen mindestens eine eine elektrothermische Kuehleinrichtung ist
DE10105963A1 (de) * 2000-09-15 2002-04-11 Samsung Electronics Co Ltd Mikrowellenofen
WO2009003893A2 (fr) * 2007-06-29 2009-01-08 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique et procédé pour maintenir une température prédéterminée à une valeur constante dans un compartiment réfrigérant de l'appareil frigorifique

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