EP2938950B1 - Réfrigérateur avec chambre de traitement aux ultraviolets améliorée - Google Patents

Réfrigérateur avec chambre de traitement aux ultraviolets améliorée Download PDF

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Publication number
EP2938950B1
EP2938950B1 EP12816312.8A EP12816312A EP2938950B1 EP 2938950 B1 EP2938950 B1 EP 2938950B1 EP 12816312 A EP12816312 A EP 12816312A EP 2938950 B1 EP2938950 B1 EP 2938950B1
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EP
European Patent Office
Prior art keywords
refrigerator
light source
set forth
cover
control panel
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
EP12816312.8A
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German (de)
English (en)
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EP2938950A1 (fr
Inventor
Aylin MET
Feyzi Alper SOYSAL
Aydin Celik
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
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Publication date
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Publication of EP2938950A1 publication Critical patent/EP2938950A1/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
    • F25D17/042—Air treating means within refrigerated spaces
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0042—For refrigerators or cold rooms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/006—Safety devices
    • 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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
    • F25D2317/0417—Treating air flowing to refrigeration compartments by purification using an UV-lamp

Definitions

  • the present invention pertains to a refrigerator having an inner volume where food items are preserved.
  • a structurally essential component involved in a refrigerator is a storage division where food items are preserved at a temperature much higher than that of a freezer compartment but cooler than the regular temperature of the main storage division of said refrigerator. It is known to use ultraviolet light sources to inactivate microorganisms such as bacteria, which grow in food items. This typically helps increasing maximum storage time of food items by suppressing bacterial growth. It is to be noted that even if the food item may still be edible, the presence of bacteria can lead to potential health problems. Use of UV light sources in a refrigerator is effective in retarding food spoilage. In other words, diminishing the amount of organisms in the food item during the pre-spoilage stage should be accomplished.
  • UV-C light absorption by the DNA molecule of the organisms at 254 nm wavelength Health risks associated with use of UV light in refrigerators are, however, known and addressed in a plurality of prior art references, such risks including skin or eye irritation, scalds, vision damage and/or loss.
  • the US publication US 6,477,853 discloses a refrigerator according to the preamble of claim 1 having a system for retarding food spoilage in a refrigerator, which comprises an ultraviolet light turned on for at least a predetermined time only after the refrigerator door is shut.
  • the system as disclosed ensures that UV radiation is interrupted as soon as the refrigerator door is opened. Further, as an additional precaution, UV radiation is not initiated until a light sensor verifies that there is no ambient light in the compartment where UV radiation is to be applied and that the compartment door is closed.
  • the present invention provides a control mechanism according to which the compartment where UV radiation is applied is physically locked and maintained so until a set of actions are performed by a user.
  • Primary object of the present invention is to provide a refrigerator with a UV treatment compartment involving improved security measures for eliminating health risks associated with UV radiation.
  • the present invention discloses a refrigerator with a separate chamber for preserving food items.
  • Said inner compartment has a UV light source.
  • Said chamber's cover as well as the door of the refrigerator are automatically lockable to prevent access while said UV lamp is operational. Control of said locks is undertaken by an electronic control unit.
  • Both said cover and said door comprises control panels allowing user intervention. Further, said panels serve to the purpose of displaying information in regards to operation modes of the refrigerator.
  • Said electronic control unit activates and energizes said UV light source in the event a set of conditions are met. Users may activate said UV light source by using said chamber's control panel. Upon this, said electronic control unit automatically locks said cover. If in return, a given user closes the door of the refrigerator too, the electronic control unit then actuates said door lock. Only upon this, said UV light source is energized, i.e. when the cover and the door are locked.
  • a sensor (12) is present in the chamber and said electronic control unit verifies current operational status of said UV light source also with the help of said sensor as a second source of information, which is independent of the information processed between said electronic control unit that energizes said UV light source and said control panels.
  • Said cover opens horizontally, i.e. parallel to the ground. It is therefore less likely to be subject to direct UV light while opening the cover.
  • Said cover being made out of a transparent UV-resistant polymeric material, it is therefore self-indicative of the operational state of the UV light source.
  • Fig. 1 demonstrates a schematic view of a refrigerator according to the present invention.
  • the present invention proposes a refrigerator (1) comprising a compartment (2), a door (3) for accessing the compartment (2) in which a chamber (5) for preserving food items is disposed.
  • Said chamber (5) has a UV light source (6) for preventing microorganism growth in food items preserved within said chamber (5).
  • Said chamber (5) further has a cover (7) for effecting physical isolation of said chamber (5) volume from said inner volume of the refrigerator (1). Therefore by closing said cover (7), an activated UV light source (6) will only be efficient within the chamber (5) volume and not in the remaining volume of the refrigerator (1).
  • said cover (7) of said chamber (5) comprises a second locking means (8) for effecting closing of said cover (7) in a locked manner.
  • This provides that said cover (7) being closed and locked will remain so as long as said second locking means (8) of said cover (7) is not unlocked, therefore providing an improved security control over said cover (7), said chamber (5) incorporating a UV light source (6) subjection to which may lead to health problems.
  • said door (3) of said refrigerator (1) also comprises a first locking means (4) for effecting closing of said door (3) in a locked manner. Therefore, when said UV light source (6) of said chamber (5) is activated and both locks (4 and 8) are actuated as explained below, a user in an effort to reach a food item in said chamber (5) will need to subsequently unlock said first locking means (4) and said second locking means (8), which helps reducing risks associated with subjection to UV light.
  • Said refrigerator (1) comprises an electronic control unit (9) for controlling said second locking means (8) of said cover (7) and said first locking means (4) of said door (3).
  • said door (3) comprises a main control panel (10) in communication with said electronic control unit (9) for executing different operation modes of said refrigerator (1)
  • said cover (7) comprises an inner control panel (11) also in communication with said electronic control unit (9) and also for executing different operation modes of sad refrigerator (1). Therefore a set of different parameters are settable on two separate control panels (10 and 11); namely, while said UV light source (6) is activatable only by means of said inner control panel (11), it is deactivatable only by means of said main control panel (10). Due to this arrangement, it is provided that a user activating said UV light source (6) will certainly need to close the door (3) of the refrigerator (1) for deactivating said UV light source (6).
  • said UV light source (6) is not activatable on the main control panel (10) ensures that the given user, after activating said UV light source (6), still has access to the inner volume of the refrigerator (1) with the exception of said chamber (5) before closing the door (3), as closing of the latter will first initiate actuation of said first locking means (4) and then energization of said UV light source (6), as explained below.
  • Said chamber (5) comprises a sensor (12) in communication with said electronic control unit (9).
  • Said electronic control unit (9) therefore verifies validity of the information in regards to the operation status of said UV light source (6) as displayed on said main control panel (10). In other words, the case may occur that said main control panel (10) displays incorrect information in regards to the operation status of said UV light source (6) while said sensor (12) is still operational.
  • active mode of said UV light source (6) may be manually disabled on the main control panel (10) and be indicated as such thereon while said UV light source (6) is still active.
  • Activation of said UV light source (6) by the given user on said inner control panel (11) automatically triggers actuation of said second locking means (8).
  • said UV light source (6) is activatable on said inner control panel (11), it is not yet energized and therefore not operational until the door (3) of the refrigerator (1) is closed by the user and the first locking means (4) is actuated by said electronic control unit (9).
  • Said inner control panel (11) becomes inactive after activation of said UV light source (6) in the manner that it remains operational only for displaying information.
  • Visual and audible warnings are activatable on said inner control panel (11) and/or main control panel (10), such warnings reflecting different operation modes of said refrigerator (1). To this end, a given user will be informed of the current status of the UV light source (6) and will take desired steps accordingly.
  • Distinct visual and audible warnings may also be emitted after activation of said UV light source (6), such warnings, for instance, reflecting an open state of said door (3).
  • said UV light source (6) is activated by the user on the inner control panel (11) upon which said cover (7) is automatically locked but the user then did not close the door (3) of the refrigerator (1) for a prolonged duration. In this case, activation of said UV light source (6) is automatically cancelled as one of the required criteria is not met.
  • activation of said UV light source (6) is programmable to a particular time on said inner control panel (11), operational conditions and security criteria before and during operation time remaining unchanged.
  • Said cover (7) according to the present invention is operable around an axis parallel to the base of said refrigerator (1). This is a further security measure which ensures that direct eye contact with said UV light source (6) is avoided since with an opening axis in horizontal direction, i.e. in parallel with the ground, will not reveal said UV light source (6) in a direct and immediate manner.
  • Said UV light source (6) of the invention is a UV-C lamp.
  • said cover (7) being made out of a transparent and non UV permeable, UV-resistant polymeric material ensures that a given user can notice operational state of said UV light source (6) by viewing the cover (7) itself.
  • Said chamber (5) comprises an opaque sealing member (13) encircling said cover (7) is used to support and seal said cover (7).
  • Said sealing member (13) is designed in the form of ethylene propylene diene monomer (EPDM), a material having a high UV resistance.
  • EPDM ethylene propylene diene monomer
  • UV-sensitive silicon carbide photodiodes may be provided in between said cover (7) and said sealing member (13) whereby efficiency of the sealing member (13) can regularly be monitored. It is therefore possible to inform users in case leakage is observed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (13)

  1. Un réfrigérateur (1) comprenant un compartiment (2), une porte (3) pour accéder au compartiment (2) dans lequel une chambre (5) pour la conservation des aliments est disposée, où ladite chambre (5) présente une source de lumière UV (6) pour empêcher la croissance des micro-organismes dans les aliments conservés dans ladite chambre (5) et un couvercle (7) pour réaliser l'isolation physique de ladite chambre (5) du volume intérieur du compartiment (2), caractérisé en ce que
    ledit couvercle (7) de ladite chambre (5) comprend un deuxième moyen de verrouillage (8) pour réaliser la fermeture dudit couvercle (7) d'une manière verrouillée,
    ladite porte (3) comprend un premier moyen de verrouillage (4) pour réaliser la fermeture de ladite porte (3) d'une manière verrouillée,
    une unité de commande électronique (9) pour commander ledit premier moyen de verrouillage (4) et ledit deuxième moyen de verrouillage (8) et
    ledit couvercle (7) et ladite porte (3) sont automatiquement verrouillés afin de empêcher l'accès lorsque ladite lampe UV est opérationnelle.
  2. Un réfrigérateur (1) selon la Revendication 1 où ladite porte (3) comprend un panneau de commande principal (10) en communication avec ladite unité de commande électronique (9) et ledit couvercle (7) comprend un panneau de commande intérieur (11) en communication avec ladite unité de commande électronique (9), pour exécuter des différents modes de fonctionnement.
  3. Un réfrigérateur (1) selon la Revendication 2 où ladite source de lumière UV (6) peut être activée sur ledit panneau de commande intérieur (11).
  4. Un réfrigérateur (1) selon la Revendication 2 ou 3 où l'activation de ladite source de lumière UV (6) peut être effectuée après le verrouillage du couvercle (7) par ladite unité de commande électronique (9).
  5. Un réfrigérateur (1) selon l'une quelconque des revendications de 2 à 4 où ledit panneau de commande intérieur (11) est inactif dès l'activation de ladite source de lumière UV (6).
  6. Un réfrigérateur (1) selon l'une quelconque des revendications de 2 à 5 où l'activation de ladite source de lumière UV (6) peut être effectuée dès la fermeture subséquente et le verrouillage automatique de ladite porte (3).
  7. Un réfrigérateur (1) selon l'une quelconque des revendications de 2 à 6 où ladite source de lumière UV (6) peut être désactivée sur ledit panneau de commande principal (10).
  8. Un réfrigérateur (1) selon l'une quelconque des revendications de 2 à 7 où les informations en ce qui concerne l'état de fonctionnement de ladite source de lumière UV (6) peuvent être affichées sur ledit panneau de commande principal (10).
  9. Un réfrigérateur (1) selon l'une quelconque des revendications de 2 à 8 où l'activation de ladite source de lumière UV (6) peut être programmée à un moment précis sur ledit panneau de commande intérieur (11).
  10. Un réfrigérateur (1) selon l'une quelconque des revendications précédentes où ledit couvercle (7) est produit d'un matériau polymère transparent, résistant aux UV et imperméable aux UV.
  11. Un réfrigérateur (1) selon la Revendication 10 où ledit couvercle (7) est entouré par un élément d'étanchéité opaque (13) sous la forme de éthylène-propylène-diène monomère (EPDM).
  12. Un réfrigérateur (1) selon la Revendication 10 ou 11 où des photodiodes en carbure de silicium sensible aux UV sont disposées entre ledit couvercle (7) et ledit élément d'étanchéité (13).
  13. Un réfrigérateur (1) selon l'une quelconque des revendications précédentes où des avertissements sonores et visuels sont activés pour informer l'utilisateur de l'étant actuel de la source de lumière UV (6), sur ledit panneau de commande intérieur (11) et/ou ledit panneau de commande principal (10).
EP12816312.8A 2012-12-30 2012-12-30 Réfrigérateur avec chambre de traitement aux ultraviolets améliorée Active EP2938950B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/077102 WO2014101964A1 (fr) 2012-12-30 2012-12-30 Réfrigérateur avec chambre de traitement aux ultraviolets améliorée

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EP2938950A1 EP2938950A1 (fr) 2015-11-04
EP2938950B1 true EP2938950B1 (fr) 2016-11-09

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US (1) US20160161172A1 (fr)
EP (1) EP2938950B1 (fr)
PL (1) PL2938950T3 (fr)
WO (1) WO2014101964A1 (fr)

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Also Published As

Publication number Publication date
EP2938950A1 (fr) 2015-11-04
WO2014101964A1 (fr) 2014-07-03
US20160161172A1 (en) 2016-06-09
PL2938950T3 (pl) 2017-05-31

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