EP3049737A1 - Appareil réfrigérant comportant une structure de guidage de la circulation permettant d'améliorer le profil de distribution thermique - Google Patents

Appareil réfrigérant comportant une structure de guidage de la circulation permettant d'améliorer le profil de distribution thermique

Info

Publication number
EP3049737A1
EP3049737A1 EP13773202.0A EP13773202A EP3049737A1 EP 3049737 A1 EP3049737 A1 EP 3049737A1 EP 13773202 A EP13773202 A EP 13773202A EP 3049737 A1 EP3049737 A1 EP 3049737A1
Authority
EP
European Patent Office
Prior art keywords
interspace
air supply
refrigerator
evaporator
refrigeration 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.)
Withdrawn
Application number
EP13773202.0A
Other languages
German (de)
English (en)
Inventor
Yusuf Koc
Tolga APAYDIN
Erman Tutkak
Taylan MUCUK
Salih YILDIRIM
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3049737A1 publication Critical patent/EP3049737A1/fr
Withdrawn legal-status Critical Current

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

Definitions

  • the present invention relates to a refrigerator having an improved and more evenly distributed thermal profile in respect of different shelves along the height of the cooling compartment of the refrigerator.
  • the cooling process is performed by means of an evaporator known as cold wall evaporator.
  • the evaporator is disposed at the back surface of the compartment wall to be cooled.
  • Preserved food items are cooled in the cooling compartment by way of passing the ambient air over the evaporator by means of a fan and accordingly circulating the same inside the compartment.
  • the surface temperature of the evaporator eventually causes frost of the humidity contained in the circulating air in the form of ice accumulations so that defrosting cycles are effected at certain intervals typically by means of electric heaters such that the ice deposited on the cold evaporator surface caused by frozen water content of the circulated air is removed.
  • the refrigerator comprises an evaporator which is placed behind an evaporator cover defining the rear wall of the device’s inner compartment.
  • the evaporator typically effects cooling of the food items by means of the refrigerant circulated by the compressor cooling the ambient air around the evaporator and the cooled air being circulated inside the cooling compartment by a fan.
  • the present invention provides an advantageous circulation guiding structure by which the temperature difference between the uppermost and the lowermost regions of the cooling compartment can be maintained within a limited range of variation without having to continuously operate the circulation fan.
  • KR20030018840 disclosing a supply duct formed on one side of a rear side of a refrigerator compartment to supply air introduced from a freezer compartment.
  • a ceiling duct is formed on a ceiling of the refrigerator compartment frontward from the supply duct and a ceiling discharge port formed on a front end of the ceiling duct to discharge chilled air supplied to a lower side of the refrigerator compartment.
  • the present invention proposes an improved circulation guiding structure providing uniform distribution of temperature in cases where an interrupted fan operation is effected as provided by the characterizing features defined in Claim 1.
  • Primary object of the present invention is to provide an improved and more evenly distributed thermal profile in respect of different shelves along the height of the cooling compartment of a refrigerator without having to continuously operate the circulation fan.
  • the present invention proposes a refrigerator having a refrigeration compartment comprising a compressor, an evaporator fan and a cold-wall evaporator extending over the interior rear wall of the refrigeration compartment.
  • An air supply interspace is provided between the interior rear wall and an air supply covering. Said air supply interspace is longitudinally divided into three divisions by means of air separators such that a central interspace communicates with two lateral interspaces only at the lower end of the air supply interspace.
  • Said evaporator fan is a radial fan on the inner surface of the ceiling in the refrigeration compartment.
  • the evaporator fan only communicates with the central interspace.
  • the cold-wall evaporator’s cooler inlet side and subsequent sections are arranged to extend along the lateral interspaces and the relatively hot end sections along the central interspace.
  • the air supply covering has a plurality of cooling openings along its vertical longitudinal surface such that cool air is supplied to respective shelves.
  • the central interspace is delimited by the central longitudinal part of the air supply covering that is free of openings between longitudinal ends thereof such that air is maintained in the central interspace during its circulation therethrough.
  • the cooling openings along the lateral interspaces gradually increase in the direction of the ceiling of the refrigeration compartment so that cooler air is supplied to the upper shelves.
  • Fig. 1 demonstrates a lateral cross-sectional view of the refrigerator exposing the interior of the refrigeration compartment according to the present invention.
  • Fig. 2 demonstrates a front view of the air supply covering disposed against the cold-wall evaporator according to the present invention.
  • Fig. 3 demonstrates a rear view of the air supply covering disposed against the cold-wall evaporator according to the present invention.
  • Fig. 4 demonstrates a general front view of the cold-wall evaporator according to the present invention.
  • the present invention proposes a refrigerator (1) having a cooling or refrigeration compartment (11) for preserving foodstuff, a compressor (3) circulating a refrigerant fluid, a condenser (4) providing the refrigerant fluid to be condensed, a cold-wall evaporator (5) effecting refrigeration by absorbing the ambient thermal energy and an evaporator fan (6) carrying out the circulation of the cooled air.
  • a water discharge line (8) is provided together with a defrost receptacle (9) for use during removal of the ice deposited on the cold evaporator surface caused by frozen water content of the circulated air.
  • Said evaporator fan (6) is disposed on an inner surface portion of the ceiling of the refrigeration compartment (11) behind a fan covering (15).
  • a cooling air supply covering (12) is vertically mounted to the front part of the cold-wall evaporator (5) parallel to the vertical surface of the cabin’s rear inner wall.
  • the air supply covering (12) has a plurality of cooling openings (14) in communication with the refrigeration compartment (11).
  • An air supply interspace (7) is accordingly formed throughout said cold-wall evaporator (5) between the rear wall and the air supply covering (12) to be delimited by the latter.
  • the cold-wall evaporator (5) is hence situated behind said air supply covering (12) in the air supply interspace (7) through which the cold air is circulated and blown around the refrigeration compartment (11) with the evaporator fan (6) motor.
  • the cold-wall evaporator (5) is disposed against the inner surface of the rear wall of the refrigeration compartment (11) facing the door (2).
  • the air supply interspace (7) is longitudinally divided into a plurality of parts by means of air separators (16) such that a central interspace (17) communicates with two lateral interspaces (18) only at a bottom end of the air supply interspace (7).
  • the evaporator fan (6) being disposed on an inner surface portion of the ceiling of the refrigeration compartment (11) and only in communication with the central interspace (17) provides that the refrigeration compartment’s (11) relatively high temperature air is sucked and circulated into the central interspace (17).
  • relatively hot air shown by arrows h
  • Fig. 3 is forced downwards through the central interspace (17).
  • the cold-wall evaporator (5) is configured such that the inlet side (A, C) thereof is first laid substantially along a first lateral interspace (18), then substantially along a second lateral interspace (18). Its outlet side (B) is finally laid along the central interspace (17).
  • the cold-wall evaporator (5) is designed to have tubular sections extending substantially in parallel with the longitudinal axes of said central and lateral interspaces (17, 18).
  • the central interspace (17) communicating with two lateral interspaces (18) only at a bottom end of the air supply interspace (7) ensures that sucked air is gradually cooled by being circulated around the gradually cooler sections of the cold-wall evaporator (5) while moving towards the bottom and then dividing into the lateral interspaces (18) and flowing in the direction of the ceiling of the refrigeration compartment (11).
  • the air supply covering (12) comprises a plurality of cooling openings (14) positioned between longitudinal ends of the air supply covering (12) and establishing communication between the lateral interspaces (18) and the refrigeration compartment (11).
  • the sizes of the cooling openings (14) along the lateral interspaces (18) gradually increase in the direction of the ceiling of the refrigeration compartment (11) from the bottom part thereof.
  • the central interspace (18) is delimited by part of the air supply covering (12) that is free of openings between longitudinal ends of the air supply covering (12).
  • the shelves (13) of the refrigeration compartment (11) are fed with cooler air through the cooling openings (14) such that the temperature difference between the upper shelves (13) and the lower shelves (13) is kept minimal.
  • the present invention therefore ensures that the air fed to the upper shelves (13) by said cooling openings (14) is cooler due to the special configuration of the air guiding structure. This effect is even more enhanced by the special design of the cold-wall evaporator (5).

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

La présente invention concerne un appareil réfrigérant (1) qui comporte un compartiment réfrigéré (11) accessible par une porte (2) et dans lequel des aliments à conserver sont stockés, ledit appareil réfrigérant (1) comporte également un compresseur (3) faisant circuler un fluide frigorifique, un condenseur (4) fournissant le fluide frigorifique à condenser, un ventilateur d'évaporateur (6) faisant circuler l'air refroidi et un évaporateur à paroi froide (5) placé contre la surface intérieure d'une paroi du compartiment réfrigéré (11) face à la porte (2), de sorte qu'un espace d'alimentation en air (7) est formé entre l'évaporateur à paroi froide (5) et un couvercle (12) de l'alimentation en air qui doit être délimité par ce dernier.
EP13773202.0A 2013-09-27 2013-09-27 Appareil réfrigérant comportant une structure de guidage de la circulation permettant d'améliorer le profil de distribution thermique Withdrawn EP3049737A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/070173 WO2015043646A1 (fr) 2013-09-27 2013-09-27 Appareil réfrigérant comportant une structure de guidage de la circulation permettant d'améliorer le profil de distribution thermique

Publications (1)

Publication Number Publication Date
EP3049737A1 true EP3049737A1 (fr) 2016-08-03

Family

ID=49303957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13773202.0A Withdrawn EP3049737A1 (fr) 2013-09-27 2013-09-27 Appareil réfrigérant comportant une structure de guidage de la circulation permettant d'améliorer le profil de distribution thermique

Country Status (3)

Country Link
US (1) US20160231044A1 (fr)
EP (1) EP3049737A1 (fr)
WO (1) WO2015043646A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101835336B1 (ko) * 2016-03-09 2018-03-07 엘지전자 주식회사 냉장고

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2790540B2 (ja) * 1990-11-21 1998-08-27 松下冷機株式会社 恒温高湿度庫
IT1272145B (it) * 1993-03-25 1997-06-11 Whirlpool Italia Refrigeratore a circolazione forzata d'aria con ventilazione interna migliorata
CH688422A5 (de) * 1993-12-15 1997-09-15 Forster Ag Hermann Mehrtemperatur-Haushalt-Kuehlschrank.
IT246893Y1 (it) * 1999-08-05 2002-04-10 Candy Spa Frigorifero con abbattitore rapido di temperatura e congelatore rapido
DE10143242A1 (de) * 2001-09-04 2003-03-20 Bsh Bosch Siemens Hausgeraete Kältegerät mit Kühlluftzirkulation
US6722149B1 (en) * 2003-01-07 2004-04-20 Carrier Commercial Refrigeration, Inc. Refrigerated display merchandiser
SE0303234D0 (sv) * 2003-12-01 2003-12-01 Dometic Sweden Ab Refrigerator and method
SI21815A (sl) * 2004-06-04 2005-12-31 Gorenje Gospodinjski Aparati, D.D. Hladilna naprava
US20100024446A1 (en) * 2008-08-04 2010-02-04 Hussmann Corporation Refrigerated merchandiser with dual air curtain
CN102918343A (zh) * 2010-06-15 2013-02-06 松下电器产业株式会社 冷藏库

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015043646A1 *

Also Published As

Publication number Publication date
WO2015043646A1 (fr) 2015-04-02
US20160231044A1 (en) 2016-08-11

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