EP3194869A1 - Appareil de réfrigération pourvu d'une pluralité de compartiments de stockage - Google Patents

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

Info

Publication number
EP3194869A1
EP3194869A1 EP15756940.1A EP15756940A EP3194869A1 EP 3194869 A1 EP3194869 A1 EP 3194869A1 EP 15756940 A EP15756940 A EP 15756940A EP 3194869 A1 EP3194869 A1 EP 3194869A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
refrigerating appliance
storage chamber
guide rib
chamber
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
EP15756940.1A
Other languages
German (de)
English (en)
Other versions
EP3194869B1 (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
Active 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
    • 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 refrigeration appliance, in particular a household refrigeration appliance, 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 refrigeration compartment, are housed.
  • Such household refrigerators are often designed as full no-frost devices.
  • the individual storage chambers are cooled by a common finned evaporator, which is housed in a mostly divided from the coldest storage chamber evaporator chamber.
  • a common finned evaporator which is housed in a mostly divided from the coldest storage chamber evaporator chamber.
  • moisture entrained in the air settles on the fins of the evaporator to form a frost layer which impedes the heat exchange between the fins and the circulating air and obstructs the passageways between them narrows the fins of the evaporator, thereby making the air circulation difficult.
  • the frost layer must therefore be defrosted regularly.
  • An object of the invention is to provide a refrigeration device in NoFrost type, in which the evaporator is fast and energy efficient abtaubar.
  • the object is achieved by providing in a refrigerator with an evaporator arranged in an evaporator chamber and at least two cooled by air exchange with the evaporator chamber storage chambers, in which in the evaporator chamber upstream of an upstream side of the evaporator, an inlet volume is kept free, the first intake via the first storage chamber and communicates via second suction openings with the second storage chamber, a guide rib is in the Inlet volume in the longitudinal direction of the inflow side and extending from an upstream side of the upstream wall to the upstream side and by the first and second openings are arranged on different sides of this guide rib.
  • the guide rib ensures that air from both chambers can be distributed across the entire width of the evaporator, so that there are not different regions across the width of the evaporator which, being more exposed to the generally more moisture-carrying air from the warmer storage chamber are more mature than other regions. Moreover, by obstructing turbulent mixing of the airflows from the first and second storage chambers in the inlet volume, the guide rib provides a small pressure drop in the circulation of the air between the evaporator chamber and the storage chambers, such that a lower performance ventilator may be required to drive air circulation 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 turbulence. This also contributes to the fact that over the entire width of the inflow side, both air streams pass one above the other into the evaporator.
  • the limited turbulence in the intake volume causes the air streams from the first and second storage chambers to be largely intimately mixed, one above and the other below the guide rib, entering the evaporator.
  • this lack of or incomplete mixing may cause frost to form faster in the region of the inflow side which is exposed to the humid air than in the area exposed to the drier air flow, a resulting unequal distribution of the frost has only a slight influence on the defrost time, since the distance between the areas is small.
  • snow formation which may occur when the relatively warm, moist air from a storage chamber cools in contact with the colder air from the other storage chamber, remains on a small portion of the inlet volume, between the edge of the guide rib and Inflow side, limited. Therefore, any resulting snow does not fall to the bottom in the inlet volume, but is flushed into the evaporator, where it sticks and can then be easily defrosted.
  • vanes of the evaporator may be oriented transversely of the guide rib and, as each louver engages both the more frosted and the less frosted regions of the evaporator, ensure efficient heat transfer between the two regions during defrost.
  • the evaporator chamber can be accommodated in a space-saving manner in a partition between the first and the second storage chamber.
  • the longitudinal direction of the inflow side is then generally a horizontal direction; it typically corresponds to the width direction of the refrigeration device.
  • the evaporator chamber is expediently separated from the first storage chamber by a thermal barrier coating and by the second storage chamber through a shell whose thermal insulation effect is weaker than that of the thermal barrier coating.
  • the shell may form at least part of a wall of the inlet volume opposite the upstream side, wherein the second openings communicating with the second storage chamber may then be provided in the shell itself or between the shell and the insulating layer.
  • the second partial openings are expediently located in the second partial space, in order to permit an intensive flow of air from the second storage chamber to the evaporator with minimal change in direction, which has a jet pumping effect on the evaporator can exert air flow originating from the first storage chamber.
  • These first openings are preferably connected to the first storage chamber via conduits extending through the thermal barrier coating.
  • these pipes can each extend at least over part of their length in a side wall of the first storage chamber.
  • the guide rib may be formed integrally with the shell.
  • the guide rib is formed integrally with the thermal barrier coating.
  • a fan may be provided to simultaneously drive air exchange with both storage chambers. Length and passage cross sections of lines which connect the evaporator chamber with the first and the second storage chamber, can be designed according to the average refrigeration demand of the two storage chambers so that the cooling capacity of the evaporator is distributed as needed to both storage chambers. Costly flaps for controlling the air exchange with the two storage chambers can then be omitted.
  • the second storage chamber generally has a lower operating temperature than the first storage chamber, and accordingly occupies a larger proportion of the evaporator's cooling capacity, the airflow through the second openings should be stronger than through the first.
  • FIG. 2 is a detail cross-section along the line II-II of Fig. 1;
  • FIG. 3 is an enlarged detail of the refrigerator according to a second embodiment in section in the depth direction.
  • FIG. 4 shows a section analogous to FIG. 3 according to a third embodiment.
  • Fig. 1 shows a NoFrost combination refrigerator in a schematic section in the depth direction.
  • a body 1 of the refrigerator are two storage chambers 2, 3, here a normal refrigerated compartment and a freezer compartment, separated by a horizontal partition 4 from each other.
  • the body 1 comprises in a customary manner a one-piece deep-drawn plastic inner container 5, a composite of several plate-shaped elements outer skin 6 and a thermal barrier coating 7 between the inner container 5 and the outer skin 6 foamed plastic.
  • the two storage chambers 2, 3 may be formed as separate depressions, so that the intermediate wall 4 is an integral part of the inner container 5.
  • the inner container 5 only a single recess 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 by a plate at least on its upper side 9, a bearing chambers 2, 3 closing doors 10, 1 1 facing end face 12 and a front portion 13 of its underside which is made of the same plastic as the inner container 5.
  • a plastic injection-molded shell 14 is fixed, which separates an evaporator chamber 15 from the lower, second storage chamber 3.
  • the plate may be missing, so that the thermal barrier coating 8 immediately limits the evaporator chamber 15.
  • a flat block-shaped finned evaporator 16 fills the evaporator chamber 15 for the most part and subdivides it into an inlet volume 17 in front of a inflow side 18 of the finned evaporator 16 and an outlet volume 19 behind the opposite side of the finned evaporator 16.
  • a defrost heater 38 is mounted here in the form of an aluminum plate, the base area of which substantially equals that of the lamellar evaporator 16, and a hot gas line, which is fastened on the one hand on 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 housed to drive air circulation through the fin evaporator 16.
  • the expelled air from the fan 20 is distributed over a in the rear wall of the body 1 extending channel 21 and along the channel 21 on the inner container 5 distributed outlet openings 22 on the two storage chambers 2, 3rd
  • Air heated in the storage chamber 2 flows through passages 24 located in side walls 23 of the body 1, through pipes 25 extending in the side walls, through pipelines 26 of the intermediate wall 4 plugged into the latter and openings 27 at 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 in which they can not be blocked by a pull-out box 28 arranged in the usual way at the bottom of the storage chamber 2.
  • heated air passes back into the evaporator chamber 15 via openings 29 which are provided in one of the door 1 1 facing end wall 30 of the shell 14 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 accommodated therein evaporator 16, so that the air flow from the second storage chamber 2 is evenly distributed over the entire width of the inflow side 18.
  • the openings 27 communicating with the first storage chamber 2 are located respectively at the lateral ends of the inlet volume 17. If the air flows through the openings 27 and 29 in the inlet volume 17 were uncontrolled, then it would be expected that the relatively humid air flowing in via the openings 27 flows through the evaporator 16 essentially only in its lateral regions lying directly behind the openings 27 and therefore frosts them much faster than a central region of the evaporator 16 which is in the Essentially, only air from the storage chamber 3 flows through.
  • 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 seen in Fig. 2, horizontally from one side wall 23 of the body 1 to the other and in Depth direction extends from a front wall 32 of the inlet volume 17 to just before the inflow side 18.
  • the front wall 32 is here formed in a lower region by the end wall 30 of the shell 14, above the guide rib 31 it is formed by an edge of the thermal barrier coating 8.
  • the guide rib 31 divides the inlet volume 17 into an upper sub-space 33, in which the air flowing from the storage chamber 2 can be distributed unimpeded by the air flow originating from the second storage chamber 3 over the entire width of the intake volume 17, and a lower sub-space 35 between the guide rib 31 and a bottom plate 34 of the shell 14, in which the air flow from the second storage chamber 3 is guided substantially laminar horizontally and between the inflow side 18 and the opposite rear edge of the guide rib 31 generates a dynamic negative pressure, through the air from the upper Subspace 33 is sucked off and pulled through the evaporator 16 therethrough.
  • the fins 36 of the finned evaporator 16 are each oriented transversely to the guide rib 31.
  • Each individual blade 36 is therefore exposed in its upper region predominantly air from the storage chamber 2 and in its lower region air from the storage chamber 3. While this may cause the frost layer to grow somewhat faster at an upper portion of the fins 36 than at a lower portion during operation, such uneven tires will eventually result in a slight displacement of the airflows in the evaporator chamber 15 and therefore have none noticeable influence on the distribution of the cooling capacity on the two storage chambers 2, 3. Since also during defrosting heat from the Defrost heater 38 is transported quickly and efficiently within the individual blades 36, it comes when defrosting the evaporator 16, even if the fins 36 longer need in their upper regions for defrosting than in the lower, possibly too low temperature gradient. This ensures fast and energy-efficient defrosting.
  • the guide rib 31 is shown as an independent component which is fixed to the underside of the intermediate wall 4.
  • the guide rib 31 is a one-piece component of the shell 14, which protrudes from an upper edge of the end wall 30 into the inlet volume 17 and at which the thermal barrier coating 8 covering, here designated 37 plate anchored ,

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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

L'invention concerne un appareil de réfrigération, notamment un appareil de réfrigération ménager, qui comprend un évaporateur (16) disposé dans un compartiment d'évaporateur (15) et au moins deux compartiments de stockage (2, 3) refroidi par échange d'air avec le compartiment d'évaporateur (15). Un volume d'admission (17), qui communique par le biais de premiers orifices d'aspiration (27) avec le premier compartiment de stockage (2) et par le biais de seconds orifices d'aspiration (29) avec le second compartiment de stockage (3), est ménagé dans le compartiment d'évaporateur (15) en amont d'un côté d'admission (18) de l'évaporateur (16). Une nervure de guidage (31) s'étend dans le volume d'entrée (17) dans la direction longitudinale du côté d'admission (18) et depuis une paroi (32), opposée au côté d'admission (18), en direction du côté d'admission (18). Les premier et second orifices d'aspiration (27, 29) sont disposés sur différents côtés de la nervure de guidage (31).
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 true EP3194869A1 (fr) 2017-07-26
EP3194869B1 EP3194869B1 (fr) 2020-01-15

Family

ID=54014841

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102604833B1 (ko) 2016-09-29 2023-11-22 엘지전자 주식회사 냉장고
KR102632586B1 (ko) * 2016-09-29 2024-02-02 엘지전자 주식회사 냉장고
KR102632585B1 (ko) 2016-09-29 2024-02-02 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
PL3194869T3 (pl) 2020-07-13
WO2016041791A1 (fr) 2016-03-24
DE102014218411A1 (de) 2016-03-17
CN106716030B (zh) 2020-03-06
CN106716030A (zh) 2017-05-24
EP3194869B1 (fr) 2020-01-15

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