EP3194869B1 - Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage - Google Patents

Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage Download PDF

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Publication number
EP3194869B1
EP3194869B1 EP15756940.1A EP15756940A EP3194869B1 EP 3194869 B1 EP3194869 B1 EP 3194869B1 EP 15756940 A EP15756940 A EP 15756940A EP 3194869 B1 EP3194869 B1 EP 3194869B1
Authority
EP
European Patent Office
Prior art keywords
evaporator
storage chamber
refrigeration device
guide rib
shell
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
EP15756940.1A
Other languages
German (de)
English (en)
Other versions
EP3194869A1 (fr
Inventor
Frank Cifrodelli
Renate Pradel
Rainer Weser
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL15756940T priority Critical patent/PL3194869T3/pl
Publication of EP3194869A1 publication Critical patent/EP3194869A1/fr
Application granted granted Critical
Publication of EP3194869B1 publication Critical patent/EP3194869B1/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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0654—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the side
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0655—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the top

Definitions

  • the present invention relates to a refrigerator, in particular a household refrigerator, with a housing in which a plurality of storage chambers, in particular storage chambers for different operating temperatures, such as a freezer compartment and a normal refrigerator compartment, are accommodated.
  • Such household refrigeration devices are often designed as full-no-frost devices.
  • the individual storage chambers are cooled by a common lamella evaporator, which is housed in an evaporator chamber, which is usually separated from the coldest storage chamber.
  • Such refrigeration devices are, for example EP 0 181 781 A2 and GB 1 482 926 A. known.
  • An object of the invention is to provide a refrigeration device of the NoFrost type in which the evaporator can be defrosted quickly and in an energy-efficient manner.
  • the guide rib ensures that air from both chambers can be distributed over the entire width of the evaporator, so that different regions do not exist across the width of the evaporator, which, since they are generally more Moisture-carrying air from the warmer storage chamber is more exposed and more ripe than other regions.
  • the guide rib prevents turbulent mixing of the air flows from the first and the second storage chamber in the inlet volume, it ensures a low pressure loss in the circulation of air between the evaporator chamber and the storage chambers, so that a fan with less power, which is used to drive the air circulation, is required gets along.
  • the guide rib allows the inlet volume to perform the function of a jet pump, in which the stronger of the two air currents pulls the weaker one instead of blocking it by swirling. This also contributes to the fact that both air streams enter the evaporator over the entire width of the inflow side.
  • the restricted turbulence in the inlet volume means that the air flows from the first and the second storage chamber largely unmixed, one above and the other below the guide rib, enter the evaporator.
  • This lack of or incomplete mixing can lead to the formation of more rapid frost in the area on the inflow side that is exposed to the humid air, but in the area exposed to the drier air flow, but the resulting uneven distribution of the frost has only a minor influence on the defrosting time because the distance between the areas is small.
  • snow formation which can occur when the relatively warm, humid air from one storage chamber cools in contact with the colder air from the other storage chamber, remains on a small area of the inlet volume, between the edge of the guide rib and the Upstream side, limited. Therefore, any snow that may be formed does not fall to the ground in the inlet volume, but is flushed into the evaporator, where it sticks and can then be easily defrosted.
  • fins of the evaporator can be oriented transversely to the guide rib and, by doing so, each fins both in the more frosted and in the weaker frosted area of the evaporator engages to ensure efficient heat transfer between the two areas during defrosting.
  • the longitudinal direction of the upstream side is generally a horizontal direction; it typically corresponds to the width direction of the refrigerator.
  • the shell can form at least part of a wall of the inlet volume opposite the inflow side, in which case the second openings communicating with the second storage chamber can be provided in the shell itself or between the shell and the insulation layer.
  • the first openings are preferably connected to the first bearing chamber via pipelines which extend through the thermal insulation layer.
  • these pipelines can each run at least over part of their length in a side wall of the first storage chamber.
  • the guide rib can be formed in one piece with the shell.
  • the guide rib is formed in one piece with the thermal barrier coating.
  • a fan can be provided to drive an air exchange with both storage chambers at the same time.
  • the length and passage cross sections of lines that connect the evaporator chamber to the first and the second storage chamber can be designed in accordance with the average cooling requirement of the two storage chambers so that the cooling capacity of the evaporator is distributed to both storage chambers as required. Costly flaps for controlling the air exchange with the two storage chambers can then be omitted.
  • the air throughput through the second openings should be greater than through the first.
  • Fig. 1 shows a NoFrost combination refrigerator in a schematic section in the depth direction.
  • a body 1 of the refrigerator two storage chambers 2, 3, here a normal refrigerator compartment and a freezer compartment, are separated from one another by a horizontal partition wall 4.
  • the body 1 comprises, in a manner customary in the art, an inner container 5 which is deep-drawn in one piece from plastic, an outer skin 6 composed of a plurality of plate-shaped elements and a thermal insulation layer 7 made of plastic foamed between the inner container 5 and the outer skin 6.
  • the two storage chambers 2, 3 can be formed as mutually separate depressions, so that the intermediate wall 4 is also an integral part of the inner container 5.
  • the inner container 5 has only a single depression, into which the intermediate wall 4 is inserted as a separate component.
  • the intermediate wall 4 here comprises a plate-shaped thermal insulation layer 8, preferably made of expanded polystyrene, which is covered at least on its upper side 9, a front side 12 facing doors 10, 11 closing the storage chambers 2, 3 and a front region 13 on its lower side by a plate which is made of the same plastic as the inner container 5.
  • a plastic injection molded shell 14 is attached, which separates an evaporator chamber 15 from the lower, second storage chamber 3.
  • the plate may be missing, so that the thermal insulation layer 8 directly delimits the evaporator chamber 15. Since the lower storage chamber 3 is provided as a freezer compartment, no strong insulation is required between it and the evaporator chamber 15.
  • the shell 14 is therefore made of a non-foamed plastic with a low insulation effect compared to the thermal insulation layer 8.
  • a flat cuboid vane evaporator 16 largely fills the vaporizer chamber 15 and divides it into an inlet volume 17 in front of an upstream side 18 of the vane vaporizer 16 and an outlet volume 19 behind the opposite side of the vane vaporizer 16.
  • a defrost heater 38 is attached below the finned evaporator 16, here in the form of an aluminum plate, the base of which is essentially the same as that of the finned evaporator 16, and a hot gas line, which is fastened on the one hand to the aluminum plate and, on the other hand, is clamped in notches on the lower edges of the fins of the evaporator 16 ,
  • a fan 20 is accommodated in the outlet volume 19 in order to drive air circulation through the lamella evaporator 16.
  • the air expelled by the fan 20 is distributed over the two storage chambers 2, 3 via a channel 21 extending in the rear wall of the body 1 and along the channel 21 on the inner container 5.
  • Air heated in the storage chamber 2 flows via passages 24 located opposite one another in side walls 23 of the body 1, via pipes 25 extending in the side walls, via pipes 26 of the intermediate wall 4, which are plug-connected to the latter, and openings 27 on an upper side of the inlet volume 17 back into the evaporator chamber 15.
  • the passages 24 are placed on the side walls at a height at which they cannot be blocked by a pull-out box 28 arranged in a conventional manner at the bottom of the storage chamber 2.
  • Air heated in the second storage chamber 3 returns to the evaporator chamber 15 via openings 29 which are provided in an end wall 30 of the shell 14 facing the door 11 and / or between an upper edge of the end wall 30 and the intermediate wall 4.
  • the openings 29 are distributed over the entire width of the shell 14 and the evaporator 16 accommodated therein, so that the air flow from the second storage chamber 2 is also distributed uniformly over the entire width of the inflow side 18.
  • the openings 27 communicating with the first storage chamber 2 are located at the lateral ends of the inlet volume 17. If the air flows through the openings 27 and 29 in the inlet volume 17 would meet one another in an uncontrolled manner, then it would be expected that the Relatively moist air flowing through the openings 27 flows through the evaporator 16 essentially only in its lateral areas immediately behind the openings 27 and therefore tire them significantly faster than a central area of the evaporator 16, which essentially only contains air from the storage chamber 3 is flowed through. In order to prevent this, the inlet volume 17 is divided over its entire width by a guide rib 31 which extends in the width direction of the body 1, as in FIG Fig.
  • the front wall 32 is formed here in a lower region by the end wall 30 of the shell 14, above the guide rib 31 it is formed by a flank of the thermal insulation layer 8.
  • the guide rib 31 divides the inlet volume 17 into an upper partial space 33, in which the air flowing in from the storage chamber 2 can be distributed over the entire width of the inlet volume 17 unhindered by the air flow coming from the second storage chamber 3, and a lower partial space 35 between the guide rib 31 and a base plate 34 of the shell 14, in which the air flow from the second storage chamber 3 is guided essentially laminar horizontally and generates a dynamic negative pressure between the upstream side 18 and the opposite rear edge of the guide rib 31, through the air from the upper Partial space 33 is suctioned off and pulled through the evaporator 16.
  • the fins 36 of the finned evaporator 16 are each oriented transversely to the guide rib 31.
  • Each individual lamella 36 is therefore predominantly exposed to air from the storage chamber 2 in its upper region and to air from the bearing chamber 3 in its lower region.
  • frost layer growing somewhat faster in operation on an upper part of the fins 36 than on a lower part, such uneven tires at most lead to a slight displacement of the air flows in the evaporator chamber 15 downwards and therefore have none noticeable influence on the distribution of the cooling capacity on the two storage chambers 2, 3.
  • the guide rib 31 is shown as an independent component which is attached to the underside of the intermediate wall 4.
  • the guide rib 31 is a one-piece component of the shell 14, which projects from an upper edge of the end wall 30 into the inlet volume 17 and is anchored to the plate covering the thermal insulation layer 8, here designated 37.
  • the guide rib 31 is an integral part of the thermal insulation layer 8.
  • REFERENCE NUMBERS ⁇ / b> 1 corpus 21 channel 2 storage chamber 22 outlet 3 storage chamber 23 Side wall 4 partition 24 passage 5 inner container 25 pipeline 6 shell 26 pipeline 7 thermal barrier 27 opening 8th thermal barrier 28 pull-out box 9 top 29 opening 10 door 30 bulkhead 11 door 31 guide rib 12 front 32 front wall 13 Front area 33 upper part 14 Bowl 34 baseplate 15 evaporator chamber 35 lower part 16 fin evaporator 36 lamella 17 intake volume 37 plate 18 inflow 38 defrost heater 19 discharge volume 20 fan

Claims (8)

  1. Appareil frigorifique, notamment appareil frigorifique à usage domestique, comprenant une première chambre de stockage (2) et une deuxième chambre de stockage (3), une chambre d'évaporateur (15) qui est logée dans une paroi de séparation (4) entre les chambres de stockage (2, 3) et est séparée de la première chambre de stockage (2) par une couche d'isolation thermique (8) et de la deuxième chambre de stockage (3) par une coque (14), comprenant un évaporateur (16) disposé dans la chambre d'évaporateur (15), les chambres de stockage (2, 3) étant refroidies par échange d'air avec la chambre d'évaporateur (15), un volume d'admission (17) étant maintenu libre en amont d'un côté d'arrivée (18) de l'évaporateur (16), lequel volume d'admission communique avec la première chambre de stockage (2) par l'intermédiaire de premières ouvertures d'aspiration (27) et avec la deuxième chambre de stockage (3) par l'intermédiaire de deuxièmes ouvertures d'aspiration (29), une nervure de guidage (31) s'étendant dans le volume d'admission (17) en direction longitudinale du côté d'arrivée (18), et, depuis une paroi (32) opposée au côté d'arrivée (18), s'étendant vers le côté d'arrivée (18), et divisant le volume d'admission (17) en deux volumes partiels (33, 35) oblongs le long du côté d'arrivée (18), les premières et les deuxièmes ouvertures d'aspiration (27, 29) étant disposées sur différents côtés de la nervure de guidage (31), et dans le deuxième volume partiel (35), les deuxièmes ouvertures d'aspiration (27) étant opposées au côté d'arrivée (18), les premières ouvertures d'aspiration (27) étant disposées sur des extrémités longitudinales du premier volume partiel (22), caractérisé en ce que l'effet d'isolation thermique de la coque (14) est plus faible que celui de la couche d'isolation thermique (8), et en ce que la nervure de guidage (31) empêche dans le volume d'admission (17) un mélange turbulent des flux d'air en provenance de la première et de la deuxième chambres de stockage (2, 3).
  2. Appareil frigorifique selon la revendication 1, caractérisé en ce que des lamelles (36) de l'évaporateur (16) sont orientées de manière transversale à la nervure de guidage (31).
  3. Appareil frigorifique selon la revendication 1 ou 2, caractérisé en ce que la coque (14) forme au moins une partie de la paroi (32) du volume d'admission (17), opposée au côté d'arrivée (18), et en ce que les deuxièmes ouvertures (30) sont ménagées dans la coque (14) ou entre la coque (14) et la couche d'isolation thermique (8).
  4. Appareil frigorifique selon l'une quelconque des revendications précédentes, caractérisé en ce que les premières ouvertures d'aspiration (27) sont reliées à la première chambre de stockage (2) par l'intermédiaire de conduits (26) s'étendant à travers la couche d'isolation thermique (8).
  5. Appareil frigorifique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la nervure de guidage (31) est réalisée d'une seule pièce avec la coque (14).
  6. Appareil frigorifique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la nervure de guidage (31) est réalisée d'une seule pièce avec la couche d'isolation thermique (8).
  7. Appareil frigorifique selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un ventilateur (20) est disposé pour entraîner un échange d'air simultanément avec les deux chambres de stockage (2, 3).
  8. Appareil frigorifique selon la revendication 7, caractérisé en ce que le débit d'air à travers les deuxièmes ouvertures d'aspiration (29) est plus puissant qu'à travers les premières ouvertures d'aspiration (27).
EP15756940.1A 2014-09-15 2015-09-04 Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage Active EP3194869B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15756940T PL3194869T3 (pl) 2014-09-15 2015-09-04 Urządzenie chłodnicze z kilkoma komorami magazynowania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014218411.8A DE102014218411A1 (de) 2014-09-15 2014-09-15 Kältegerät mit mehreren Lagerkammern
PCT/EP2015/070289 WO2016041791A1 (fr) 2014-09-15 2015-09-04 Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage

Publications (2)

Publication Number Publication Date
EP3194869A1 EP3194869A1 (fr) 2017-07-26
EP3194869B1 true EP3194869B1 (fr) 2020-01-15

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EP15756940.1A Active EP3194869B1 (fr) 2014-09-15 2015-09-04 Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage

Country Status (5)

Country Link
EP (1) EP3194869B1 (fr)
CN (1) CN106716030B (fr)
DE (1) DE102014218411A1 (fr)
PL (1) PL3194869T3 (fr)
WO (1) WO2016041791A1 (fr)

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KR102632586B1 (ko) 2016-09-29 2024-02-02 엘지전자 주식회사 냉장고
KR102632585B1 (ko) 2016-09-29 2024-02-02 엘지전자 주식회사 냉장고
KR102604833B1 (ko) * 2016-09-29 2023-11-22 엘지전자 주식회사 냉장고
KR102261134B1 (ko) * 2017-03-10 2021-06-07 엘지전자 주식회사 냉장고
DE102017219162A1 (de) 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Kältegerät mit vertikal durchströmtem Verdampfer
CN110285095B (zh) * 2019-05-21 2022-03-11 合肥美的电冰箱有限公司 蜗壳、制冷系统及具有其的制冷设备

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Also Published As

Publication number Publication date
CN106716030B (zh) 2020-03-06
DE102014218411A1 (de) 2016-03-17
WO2016041791A1 (fr) 2016-03-24
PL3194869T3 (pl) 2020-07-13
EP3194869A1 (fr) 2017-07-26
CN106716030A (zh) 2017-05-24

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