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WO2013013969A2 - Appareil frigorifique, notamment appareil frigorifique ménager - Google Patents

Appareil frigorifique, notamment appareil frigorifique ménager Download PDF

Info

Publication number
WO2013013969A2
WO2013013969A2 PCT/EP2012/063491 EP2012063491W WO2013013969A2 WO 2013013969 A2 WO2013013969 A2 WO 2013013969A2 EP 2012063491 W EP2012063491 W EP 2012063491W WO 2013013969 A2 WO2013013969 A2 WO 2013013969A2
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
cold air
air duct
flow
refrigerating appliance
Prior art date
Application number
PCT/EP2012/063491
Other languages
German (de)
English (en)
Other versions
WO2013013969A3 (fr
Inventor
Walter Angelis
Frank Cifrodelli
Ralph Krause
Niels Liengaard
Sebastian Rau
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2013013969A2 publication Critical patent/WO2013013969A2/fr
Publication of WO2013013969A3 publication Critical patent/WO2013013969A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • 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
    • F25D17/067—Evaporator fan units
    • 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
    • F25D2317/068—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 fans
    • F25D2317/0683—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 fans the fans not of the axial type
    • 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
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

Definitions

  • Refrigerating appliance in particular household refrigerating appliance
  • the invention relates to a refrigerator, in particular a household refrigerator, according to the preamble of claim 1.
  • a refrigerator in particular a household refrigerator
  • the evaporator of a refrigerator behind the cold room rear wall foamed in planteolierschaum.
  • a fan can be provided on the cold room ceiling in the cold room in order to reduce by air circulation, the refrigerator compartment temperature especially in the upper part of the refrigerator.
  • refrigerators are also known in which the evaporator is provided free-hanging in the refrigerator, whereby the evaporator on both sides directly in contact with the cooling space to be cooled air can be brought.
  • EP 0 793 066 B1 discloses a generic refrigerating appliance with such a freely suspended evaporator.
  • the refrigerator has one from the refrigerator
  • the cold air duct is fluidically connected to the cooling space via an air inlet and an air outlet.
  • a fan is arranged, with which the cooling chamber air in forced convection flows through the cold air duct and is returned from the air outlet into the cooling space.
  • the cold air duct is defined between a rear wall of the inner container delimiting the cooling space and a dividing wall.
  • Evaporator is held approximately in the middle between the rear wall and the partition wall and is thus surrounded on both sides by air.
  • the fan is arranged at the air inlet of the cold air duct, which is located above the evaporator. Due to the arrangement of the fan above the evaporator results on the pressure side, a particularly long flow path for the cold air flow, which also flows around the free-hanging evaporator. This has a comparatively large pressure and speed loss result, by a correspondingly high
  • a further refrigeration device is known in which the evaporator is a special, elongated finned evaporator.
  • the fan sucks on one side of the finned evaporator and blows out an air flow on the other side.
  • the back wall of the refrigerator is largely made of a multipart
  • Plastic cover and the special finned evaporator results in a very costly cold air guide.
  • the object of the invention is a refrigeration device, in particular
  • Household refrigeration appliance to provide, in which the energy efficiency of the refrigerator can be increased in a simple manner.
  • 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 or a wine storage cabinet.
  • a refrigerator which has a cooling space and a cold air channel separated therefrom.
  • the air flowing through is cooled by means of an evaporator.
  • the cold air duct is fluidically connected to the cooling space via an air inlet and an air outlet.
  • the evaporator forms a partition that separates the cold room from the cold air duct.
  • the invention therefore serves the evaporator in Dual function not only for cooling the air flow guided through the cold air duct, but also for separating the cold air duct from the cold room.
  • the cold air duct can be provided largely without flow obstacles. The air flow through the cold air duct can therefore take place in comparison to the prior art with greatly reduced pressure and speed loss.
  • the air flow in natural convection can flow through the cold air duct and thereby be cooled by the evaporator.
  • a fan can be used in addition, with which the cold air duct with cold air in
  • a radial fan is advantageous in which the air is sucked in axially and is blown out radially.
  • Such radial fans can also without flow housing, that is, only with a fan, be installed, whereby the required space is greatly reduced.
  • the fan suction side is associated with a suction through which the cooling space air is sucked.
  • the sucked cold room air is then along a
  • the air inlet with its intake opening can not be arranged at the edge above or laterally of the evaporator, but approximately centrally within the evaporator. That way is the
  • the cold air ducts to an upper and lower air outlet can thereby be approximately halved.
  • the suction opening is provided with the fan approximately in the vertical direction in the middle in the evaporator, whereby the
  • Cold air ducts are up and down substantially the same size. To further increase energy efficiency, it is advantageous if not only the
  • Cold air duct is flowed through, but in addition, a flow proportion of the cold air flow along the refrigerator facing the front side of the evaporator is guided.
  • a flow divider may be provided, which sucked the Cold air flow into a flowing through the cold air duct main flow and a partial flow divides. This can be parallel with the help of special guide elements
  • the above-mentioned flow divider can be a component-consuming way a separate
  • the flow divider for dividing the cold air flow into the main flow and into the partial flow is formed directly through the opening edge of the suction opening in the evaporator.
  • the cold air duct can be formed in a simple manner between the evaporator rear side and a cooling space delimiting wall of the inner space defining the cooling space, in particular a rear wall. At the top and bottom edges of the
  • Evaporator can be provided in each case air outlets through which the cold air is blown into the refrigerator.
  • the partial flow flowing along the evaporator front side can flow along an annular gap which is defined by the evaporator front side and an upstream cover plate.
  • the annular gap can be designed to be open to the outside.
  • the cover plate may have an intake opening, which is arranged in alignment with the air inlet of the evaporator.
  • the cover plate can also carry a screen that prevents access to the impeller of the fan as engagement protection.
  • the screen can cover the Stromungs sacrificelass the cover plate front to form inlet openings.
  • the evaporator is preferably an at least two-layer laminated sheet metal composite, which can almost completely cover, for example, the rear wall of the cooling space.
  • the laminated blanks composite the cold air duct air inlet and / or the
  • the laminated blanks composite consist of two aluminum plates, such as a high-strength motherboard and a cover plate with reduced material thickness.
  • a high-strength motherboard can be applied by means of graphite a predetermined channel image.
  • the cover plate can be welded by a rolling process with the motherboard.
  • Coolant channels can then be inflated the sheet metal blanks composite with high pressure.
  • the middle area can then be punched out of a recess which can be used as a suction opening for the fan.
  • FIG. 1 is a schematic side sectional view of a refrigerator.
  • FIG. 2 shows a detail view of the intake area of the ventilator from FIG. 1;
  • FIG. and Fig. 3 in a perspective view of the cold air duct air inlet in
  • a refrigeration device is shown with a cooling space 1, the front-side charging opening is closed by a door 3 in a side sectional view.
  • the refrigerator 1 is limited by a plastic inner container 2, which together with not shown housing outer walls in a conventional manner with a
  • an evaporator 9 is arranged. This is positioned freely suspended in the cooling chamber 1, that is not foamed in the heat insulating foam, but upstream in the Bautiefencardi y the rear wall 7.
  • the evaporator 9 is part of a refrigerant circuit, not shown in FIG. 2, the compressor is arranged, for example, in a machine room in the rear lower corner of the refrigerator.
  • the evaporator 9 is spaced from the rear wall 7 of the inner container 2 to form a cold air duct 13.
  • the cold air duct 13 has an air inlet 17, which is incorporated in the vertical direction z approximately centrally in the evaporator 9, as will be described in more detail later.
  • Inner container 2 but rather to form slit-shaped
  • a fan 23 of a centrifugal fan 15 is rotatably arranged as shown in FIGS. 1 and 2. With the fan 23, an air flow I is sucked in from the cooling space 1 approximately in the middle and in the depth direction y, and these are conveyed radially outwards through the cold air duct 13 to the two air outlets 21.
  • the cold air ducts a, b between the fan 23 and the two upper and lower air outlets 21 are substantially identical.
  • the evaporator rear side delimits the cold air duct 13, while the evaporator front side 27 faces the cooling chamber 1.
  • the evaporator 9 thus forms a partition which separates the cooling chamber 1 from the cold air duct 13.
  • the intake of the fan 15 is shown in detail.
  • the fan 23 of the radial fan 15 penetrates the air inlet 17 of the evaporator 9.
  • the fan 23 thus dominates the evaporator front side 27 with a supernatant c.
  • the fan 23 protrudes in the axial direction with a supernatant d in the
  • the opening edge 20 of the air inlet 17 acts in FIGS. 1 and 2 as a flow divider, which divides the sucked air flow I into a main flow II and a partial flow III.
  • the front end of the fan 23 is preceded by a cover 31, which has a central intake opening 33.
  • the suction port 33 is in the
  • the flow cross-section of the intake opening 33 is substantially smaller than the flow cross-section of the air inlet 17. Accordingly covers the cover 31, the fan 23 front side radially inwardly by a Versatzhold e.
  • a screen 35 is provided, which is spaced from the cover plate 31 via edge webs with intermediate Einströmspalten 37 (FIG. About the Einströmspalte 37, the air flow I is passed to the pressure side of the fan 23.
  • the impeller 23 displaces the sucked cold air radially outwards, to form a guided in the cold air duct 13 main flow I and a flow in a gap 39 (FIG. 2) partial flow II.
  • the flow gap 39 is through the evaporator front side 27 and the upstream Cover plate 31 defined.
  • Main flow II is guided according to FIGS. 1 and 2 via the cold air duct sections a, b to the air outlets 21 and blown out there into the cooling space 1.
  • the partial flow III is first led in the flow gap 39 parallel to the main flow II radially outward along the evaporator front side 27 into the cooling chamber 1 and then opens into the central region of the cooling chamber 1 a.
  • Fig. 3 is shown in an enlarged partial view of the central portion 45 of the evaporator 9, in which the air inlet 17 is incorporated.
  • the evaporator 9 is formed by two stacked sheet metal plates 41, 43, which are welded together in a roll-bonding method known per se.
  • the two sheet metal blanks 41, 43 are welded over a large area and continuously with each other.
  • the air inlet 17 is incorporated by a punching process as a sheet-metal recess in the sheet-metal composite.
  • the refrigerant pipes are incorporated, of which in Fig. 3, only a refrigerant line 46 is shown.

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 frigorifique, notamment un appareil frigorifique ménager comportant un espace frigorifique (1) et un canal d'air froid (13) séparé de l'espace frigorifique, dans lequel de l'air en circulation (11) peut être réfrigéré au moyen d'un évaporateur (9), le canal se trouvant en communication fluidique avec l'espace frigorifique (1) au moyen d'une entrée d'air (17) et d'une sortie d'air (21). Selon l'invention, l'évaporateur (9) forme une paroi de séparation séparant l'espace frigorifique (1) du canal d'air froid (13).
PCT/EP2012/063491 2011-07-25 2012-07-10 Appareil frigorifique, notamment appareil frigorifique ménager WO2013013969A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079761.0 2011-07-25
DE201110079761 DE102011079761A1 (de) 2011-07-25 2011-07-25 Kältegerät, insbesondere Haushaltskältegerät

Publications (2)

Publication Number Publication Date
WO2013013969A2 true WO2013013969A2 (fr) 2013-01-31
WO2013013969A3 WO2013013969A3 (fr) 2013-05-30

Family

ID=46466578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/063491 WO2013013969A2 (fr) 2011-07-25 2012-07-10 Appareil frigorifique, notamment appareil frigorifique ménager

Country Status (2)

Country Link
DE (1) DE102011079761A1 (fr)
WO (1) WO2013013969A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792085A (zh) * 2015-04-01 2015-07-22 合肥华凌股份有限公司 冰箱风道结构及风冷冰箱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014016212A1 (de) * 2014-10-31 2016-05-04 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793066B1 (fr) 1996-03-01 2001-11-21 Liebherr-Hausgeräte Gmbh Réfrigérateur avec compartiments de refroidissement à des températures différentes
DE60117808T2 (de) 2000-08-09 2006-10-05 Aktiebolaget Electrolux Kühlschrank oder gefrierschrank

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815460A (en) * 1957-01-08 1959-06-24 Gen Motors Corp Improved refrigerator
US2994209A (en) * 1959-02-26 1961-08-01 Gen Motors Corp Frostless refrigerator
US3009338A (en) * 1959-10-01 1961-11-21 Westinghouse Electric Corp Refrigeration apparatus
DE102008019362A1 (de) * 2008-04-17 2009-10-22 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einer umgebogenen Verdampferfläche
DE102009001825A1 (de) * 2009-03-25 2010-09-30 BSH Bosch und Siemens Hausgeräte GmbH Haushaltskältegerät mit einem ersten Lüfter und mindestens einen weiteren Lüfter zur Förderung von Kühlraumluft entlang der Oberfläche eines Verdampfers und zugehöriges Verfahren

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0793066B1 (fr) 1996-03-01 2001-11-21 Liebherr-Hausgeräte Gmbh Réfrigérateur avec compartiments de refroidissement à des températures différentes
DE60117808T2 (de) 2000-08-09 2006-10-05 Aktiebolaget Electrolux Kühlschrank oder gefrierschrank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792085A (zh) * 2015-04-01 2015-07-22 合肥华凌股份有限公司 冰箱风道结构及风冷冰箱
CN104792085B (zh) * 2015-04-01 2017-09-19 合肥华凌股份有限公司 冰箱风道结构及风冷冰箱

Also Published As

Publication number Publication date
DE102011079761A1 (de) 2013-01-31
WO2013013969A3 (fr) 2013-05-30

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