EP2846116B1 - Kühlschrank - Google Patents

Kühlschrank Download PDF

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Publication number
EP2846116B1
EP2846116B1 EP13183553.0A EP13183553A EP2846116B1 EP 2846116 B1 EP2846116 B1 EP 2846116B1 EP 13183553 A EP13183553 A EP 13183553A EP 2846116 B1 EP2846116 B1 EP 2846116B1
Authority
EP
European Patent Office
Prior art keywords
fins
frost
grid
freezer
compartment
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
EP13183553.0A
Other languages
English (en)
French (fr)
Other versions
EP2846116A1 (de
Inventor
Paolo Sicher
Serkan Gemici
Luca Alioli
Nicholas Righetti
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP13183553.0A priority Critical patent/EP2846116B1/de
Publication of EP2846116A1 publication Critical patent/EP2846116A1/de
Application granted granted Critical
Publication of EP2846116B1 publication Critical patent/EP2846116B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D21/06—Removing frost
    • 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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • F25D2317/0411—Treating air flowing to refrigeration compartments by purification by dehumidification

Definitions

  • the present invention relates to a refrigerator comprising at least a freezing compartment closed by a door, and a member arranged to reduce the moisture content of the air.
  • Such a refrigerator is known from EP 0644385 A1 which discloses a no-frost refrigerator comprising a freezing compartment, a closed storage compartment and a refrigerating circuit having an evaporator and circulating air to the above compartments.
  • the member to reduce moisture content of the air is a partition wall arranged in the return air duct, such partition wall being provided with a heater for carrying out defrost phase.
  • WO2009/141125A1 discloses a no frost refrigerator comprising a pre-defrost device which is arranged adjacent to the evaporator and has the same purpose of the partition wall of EP 0644385 , i.e. to have at least some humidity in the air guided by the pre-defrost device sticking to it.
  • a solution for speeding up the process of manual defrosting of a direct cooled freezer, particularly a vertical freezer, is disclosed by DE29702740U in which the evaporator, where there is the main accumulation of frost, may be removed from the cavity thanks to automatic valves which avoid loosing refrigerant fluid. The evaporator is then cleaned manually (for instance by putting it under tap water).
  • Such solution is quite complex and expensive and does not guarantee that a lack of refrigerant fluid may occur in the process of removing and then re-installing the evaporator grid.
  • EP 0031311 A2 discloses a refrigerator according to the preamble of claim 1.
  • a flat element with a plurality of fins supported by a frame is placed on the top part of a freezer compartment: in this way when the door is opened, most of the external humid air enters in contact with it.
  • the grid is not the coldest part of the freezer (by definition, the coldest part is the evaporator) but it is cold enough to have part of humidity stuck to its surface.
  • the metal grid has to be periodically cleaned by the user, but this operation is much easier because the grid can be easily removed and then cleaned with tap water. The grid is then replaced inside freezer and the same grid can be reused every time. In this way frost formation on the freezer walls is slower. As a consequence, the complex manual defrost operation can be done less frequently.
  • the grid is a simple mechanical component and it does not require electrical connections and/or electronic control.
  • the flat element presents a plurality of parallel fins arranged transversally to the front opening of the compartment.
  • a direct cooled double door refrigerator having an upper fresh food compartment 10a and a lower freezer compartment 10b.
  • the freezer compartment 10b is provided with two drawers 12 and a sliding shelf 14.
  • a flat grid 18 ( figures 2 , 3 ) comprising a plurality of parallel slanted fins 18a connected together by longitudinal beams 20 ( figure 3 ).
  • the fins 18a are placed transversally with reference to the direction of the opening of the compartment.
  • the ends of each beam 20 are connected to a front piece 22 and to a rear piece 24 respectively, so as to form a single piece grid.
  • the front piece 22 is provided centrally with an aperture 22a defining a handle for easily removing and mounting the grid 18 over rails (not shown) defined in the side walls of the liner.
  • the applicant has tested different kinds of fins pattern; figure 4 shows a pattern ("A") in which the fins 18a are inclined in a direction different from the direction shown in figure 5 (pattern "B").
  • Figure 6 shows a different arrangement of the grid 18 which is slanted of about 20° to 35° with respect to the horizontal arrangement shown in figures 4 and 5 (in the example of figure 6 the fins 18a are oriented according to pattern "B", but also the pattern "A" was tested by the applicant).
  • the 20 fins used on CB310 have a width of about 350 mm, while the 14 fins tested on CB304 have a width of 300 mm.
  • the width of the grid 18 may vary, and it depends mainly on the dimension of the compartment. As far as the material of the grid 18 is concerned, it is only important that the material has a high thermal conductivity, for instance aluminum or stainless steel.

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)

Claims (3)

  1. Kühlschrank, umfassend ein Gefrierfach (10b), das durch eine Tür verschlossen ist, und ein Element, das dazu angepasst ist, den Feuchtigkeitsgehalt der Luft zu reduzieren, wobei das Element ein flaches Element (18) ist, das angrenzend an die Oberseite (16) des Gefrierfachs (10b) angeordnet ist und dazu konfiguriert ist, vom Benutzer zur Beseitigung von Frost entfernt zu werden, wobei das flache Element (18) horizontal oder geneigt innerhalb des Gefrierfachs (10b) positioniert ist, dadurch gekennzeichnet, dass das flache Element (18) eine Vielzahl von Rippen (18a) aufweist, die quer zur Öffnung des Fachs (10b) angeordnet sind.
  2. Kühlschrank nach Anspruch 1, wobei die Rippen (18a) parallel und geneigt in Bezug auf das flache Element (18) sind.
  3. Kühlschrank nach Anspruch 1 oder 2, wobei die Rippen (18a) in einer Anzahl zwischen 10 und 30 enthalten sind.
EP13183553.0A 2013-09-09 2013-09-09 Kühlschrank Active EP2846116B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13183553.0A EP2846116B1 (de) 2013-09-09 2013-09-09 Kühlschrank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13183553.0A EP2846116B1 (de) 2013-09-09 2013-09-09 Kühlschrank

Publications (2)

Publication Number Publication Date
EP2846116A1 EP2846116A1 (de) 2015-03-11
EP2846116B1 true EP2846116B1 (de) 2021-02-17

Family

ID=49118399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13183553.0A Active EP2846116B1 (de) 2013-09-09 2013-09-09 Kühlschrank

Country Status (1)

Country Link
EP (1) EP2846116B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017000948A1 (de) 2016-11-04 2018-05-09 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442978A (en) * 1944-03-17 1948-06-08 Philco Corp Refrigeration apparatus having frost localizing means
US3008306A (en) * 1959-05-01 1961-11-14 Ohio Commw Eng Co Apparatus for defrosting refrigerators
SE7909844L (sv) * 1979-11-29 1981-05-30 Electrolux Ab Sett och anordning for att halla ett frysskap frostfritt
BR9403434A (pt) 1993-09-04 1995-05-09 Daewoo Electronics Co Ltd Sistema para reduzir a formação de geada em um refrigerador
DE29702740U1 (de) 1997-02-17 1997-04-24 Kauder, Peter K., 56567 Neuwied Tiefkühlschrank, mit einzel entnehmbaren Gefrierböden, zum energiesparenden Abtauen mit Griff und tropfsicheren Ventilen/Kupplungen
US6925819B2 (en) * 2003-09-19 2005-08-09 University Of Florida Research Foundation, Inc. System for trapping airborne water in cooling and freezing devices
RU2010152652A (ru) 2008-05-23 2012-06-27 Актиеболагет Электролюкс (Se) Холодильное устройство

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2846116A1 (de) 2015-03-11

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