WO2013060840A1 - Appareil réfrigérant doté d'un dispositif de conservation fraîcheur - Google Patents

Appareil réfrigérant doté d'un dispositif de conservation fraîcheur Download PDF

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Publication number
WO2013060840A1
WO2013060840A1 PCT/EP2012/071255 EP2012071255W WO2013060840A1 WO 2013060840 A1 WO2013060840 A1 WO 2013060840A1 EP 2012071255 W EP2012071255 W EP 2012071255W WO 2013060840 A1 WO2013060840 A1 WO 2013060840A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerated goods
radiation
refrigerating appliance
atmosphere
stored refrigerated
Prior art date
Application number
PCT/EP2012/071255
Other languages
German (de)
English (en)
Inventor
Astrid Klingshirn
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 WO2013060840A1 publication Critical patent/WO2013060840A1/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
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D2317/0413—Treating air flowing to refrigeration compartments by purification by humidification
    • 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
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment

Definitions

  • the invention relates to a refrigeration device, in particular a household refrigerating appliance, with a freshness-keeping device for longer keeping fresh stored in the refrigerator refrigerated goods.
  • a refrigeration device Under a refrigeration device is in particular a household refrigeration appliance understood, ie a refrigeration appliance, which is used for household management in households or possibly in the catering sector, and in particular serves to store food and / or drinks in household quantities at certain temperatures, such as For example, a refrigerator, a freezer, a fridge-freezer, a freezer or a wine storage cabinet.
  • refrigeration devices on the market frequently have devices which keep food fresh stored in the refrigeration device longer. In most cases, a temperature of just over 0 ° C is set, so that the stored food, while not freezing, but still kept fresh longer.
  • the object of the invention is to propose alternative or additional freshness keeping devices for longer keeping fresh stored in a refrigerator refrigerated goods, so as to further improve the refrigeration device.
  • a refrigeration device in particular a household refrigerating appliance, has a freshness keeping device for keeping fresh goods stored refrigerated in the refrigerator for longer.
  • the freshness preservation device comprises an irradiation device for irradiating the goods to be cooled with radiation suitable for keeping the stored goods cool, and an atmospheric composition control device for controlling the composition of the atmosphere surrounding the stored refrigerated goods. Due to the freshness keeping device, in contrast to the refrigeration devices on the market, two effects are used to keep the refrigerated goods fresh longer. On the one hand, the refrigerated goods are irradiated with suitable radiation and, on the other hand, the atmosphere surrounding the refrigerated goods is controlled in such a way that the refrigerated goods are kept fresh longer.
  • atmosphere composition control means a device which controls the parameters of the atmosphere surrounding the refrigerated goods in such a way to keep the stored refrigerated goods fresh longer.
  • This can be the known temperature control, but it can also be understood as meaning, for example, controlling the humidity or influencing the molecular composition of the atmosphere.
  • the irradiation device has at least one optical waveguide for the uniform conduction of the radiation to the stored refrigerated goods.
  • a homogeneous irradiation of the stored refrigerated goods can be achieved, so that also stored in corners or, for example, among other refrigerated goods to be cooled can be kept fresh longer.
  • the irradiation device is designed for emitting radiation having a wavelength of 200 nm to 600 nm, in particular from 400 nm to 500 nm.
  • blue light with a wavelength in the range of 450 nm, preferably avoiding yellow and green light components, it is advantageously possible to reduce the growth of molds and the associated mycotoxin formation.
  • condensation which favors mold growth.
  • the stored refrigerated goods also have a lower initial quality, the product spoilage can advantageously be slowed down by the irradiation with blue light.
  • the irradiation device is designed for emitting radiation having a wavelength of 540 nm to 750 nm, in particular from 590 nm to 700 nm.
  • the irradiation device for simultaneous radiation of radiation with the wavelength of 540nm to 750nm and radiation with the wavelength of 200nm to 600nm be formed. Then, on the one hand, the mycotoxin formation is advantageously prevented and, on the other hand, the photosynthesis activity of, for example, fruits and vegetables is advantageously stimulated so that nutrients are retained.
  • the irradiation device can also be designed for the alternating emission of radiation with the wavelength of 540 nm to 750 nm and radiation with the wavelength of 200 nm to 600 nm. A constant irradiation with the respective wavelengths is not absolutely necessary, therefore it can be energetically more efficient, if preferably only one wavelength range is emitted at a certain time.
  • the irradiation device can also be designed in such a way that radiation having a wavelength of 540 nm to 750 nm is emitted in a different region of the refrigeration device than radiation having the wavelength of 200nm to 600nm.
  • refrigerated goods intended to be ripened could advantageously be stored separately from the refrigerated goods which are already ripe and in which the main factor is the prevention of mycotoxin formation.
  • optical fibers it is also possible to provide the irradiation device at a single point in the refrigeration device, and then forward the radiation with the appropriate wavelength to the desired areas.
  • the irradiation device is designed for pulsed irradiation of the stored refrigerated goods.
  • the total exposure time can be varied. Irradiation of the chilled goods can also have negative consequences, namely by vitamins are destroyed and, for example, the stored refrigerated goods can dry out. Therefore, it is advantageous if the irradiation time can be adjusted over a clocking preferably to specific properties of the stored refrigerated goods, so as to avoid damage.
  • the atmospheric composition control device has a humidifying device for humidifying the atmosphere surrounding the stored refrigerated goods. This can be advantageously prevented at a persisting over a longer period of irradiation that the stored refrigerated goods dried out.
  • the moistening device is advantageously designed to generate an air humidity of> 75% RH, in particular 85 to 100% RH. At such relative humidities, it can easily come to unwanted condensation on the stored refrigerated goods. Particular preference is therefore the humidity in the In addition, ambient atmosphere stored on cooling goods, for example, ventilation slots, mechanical slides, motorized air dampers, etc. modified to prevent condensation.
  • the humidity in the for example, ambient atmosphere stored on cooling goods, for example, ventilation slots, mechanical slides, motorized air dampers, etc. modified to prevent condensation.
  • Atmospheric composition control device on an air filtration device for filtering the atmosphere surrounding the stored refrigerated goods. This can be advantageous in joint storage of various fruit and vegetable products, the mutual influences can be reduced, such as an odor transmission or acceleration of aging processes by ethylene release.
  • the atmosphere composition control means comprises atmosphere modifying means for modifying the atmosphere surrounding the stored refrigerated goods.
  • the molecular composition of the atmosphere can be changed so as to keep the chilled goods fresh longer.
  • oxygen and liberated ethylene can adversely affect the freshness of stored refrigerated goods, so it is advantageous if the resulting atmosphere can be modified.
  • the atmosphere modifying device is a negative pressure generating device for generating a negative pressure around the stored refrigerated goods.
  • Underpressure has the advantage that by reducing the oxygen content in the storage atmosphere, oxidative spoilage processes are reduced.
  • the atmosphere modifying device may have a gassing device for gassing the stored refrigerated goods.
  • the refrigerated goods can be advantageously surrounded with an atmosphere having a desired and positively acting on the freshness of the refrigerated product molecular composition.
  • the gassing device is designed for gassing the refrigerated goods with nitrogen.
  • Nitrogen is generally inert and also available inexpensively, so that it is advantageously suitable for inert storage of the goods to be cooled.
  • Fig. 1 shows a refrigeration device 10 with a thermally insulated housing 12, which can be inserted through a not darges 10 compartments 20, in each of which a refrigerated goods drawer 22.
  • the refrigerated goods drawer 22 is not shown for better illustration.
  • the freshness keeping device 24 has an irradiation device 26 and a
  • the light guides 30 may also be designed so that they also direct the radiation to the adjacent refrigerated goods drawer 22 and / or into the storage compartments 14.
  • the irradiation device 26 has a first radiation element 32 and a second radiation element 34.
  • the first radiating element 32 emits radiation having a wavelength of 200 nm to 650 nm, i. in the range around 450nm, from. It thus represents a radiating element for blue light.
  • the second radiation element 34 emits radiation with a wavelength of 540 nm to 750 nm and thus represents a radiation element for orange to red radiation.
  • the freshness preservation device 24 further comprises the atmospheric composition control device 28, which comprises an introduction element 36 and a discharge element 38.
  • the introduction element 36 and the discharge element 38 each have one Air filtration device 40 in the form of a filter 41 so that both the air introduced into the compartment 20 and discharged air can be filtered through the atmosphere composition control device 28.
  • the discharge element 38 is designed in particular for generating a negative pressure and thus forms a vacuum generating device 42.
  • the introduction element 36 is designed to introduce gases and moisture into the compartment 20. It thus forms both a humidifying device 44 and a gassing device 46. Depending on the desired effect, the gassing device 46 can introduce nitrogen or other gases into the compartment 20. Thus, the introduction element 36 and the discharge element 38 act as atmosphere modifier 48.
  • the refrigerated goods drawer 22 can have further optical fibers 30 in contact with the optical fibers 30 shown, in order to forward the radiation also within the refrigerated goods drawer 22 when inserted into the compartment 20. Further, the refrigerated goods drawer 22 has connection means (not shown) to the atmosphere composition control means 28 for fluid communication with the introduction member 36 and the discharge member 38.
  • the freshness-keeping device 24 can also be arranged on the lowermost bearing floor 16, so that connecting elements from the refrigerated goods drawer 22 to the freshness-keeping device 24 can advantageously be dispensed with.
  • a possibility is shown to improve the storage conditions of refrigerated goods such as fresh fruit, vegetables, lettuce, herbs, meat, baked goods, dry fruits, nuts, grapes, cereals, etc.
  • the growth of molds and the associated formation of mycotoxin can therefore be advantageously reduced by selective irradiation during the storage of refrigerated goods such as fruit and vegetable products in the refrigeration device 10.
  • the requirements for irradiation for mold control in order to be able to reduce or stop mold growth include certain basic parameters.
  • the advantageous light intensity of the radiation is 2800 lux, while the advantageous wavelength for mold control is about 450 nm, with yellow and green light components are advantageously avoided.
  • a homogeneous illumination of the storage area is advantageous in order to achieve the greatest possible activity on the surface of the chilled goods.
  • a timing of the irradiation is advantageous in order to be able to adapt the irradiation time preferably to product-specific properties, so as to avoid damage such as dehydration losses, pigment damage or increased pigment formation, vitamin losses, etc.
  • the majority of stored in the refrigerator 10 food is stored as dark as possible, so as to avoid photodamage by oxidation / degradation processes, expulsion and toxin formation. Therefore, it is advantageous if the radiation elements 32, 34 is limited to a separate refrigerator area such as, for example, the refrigerated goods drawer 22.
  • the irradiation device 26 can advantageously within the Storage area are placed.
  • the conduction of radiation to cooling goods placed away from the irradiation device 26 can be realized via one or more light guides 30.
  • the refrigerator 10 storage at different temperatures in the range of 0 to 16 ° C, ie in the range of cold storage shed conditions, conventional refrigerator storage and basement storage conditions, be realized.
  • the irradiation device 26 may be coupled to wavelength regions in the red to orange range, i. in the range of 590nm to 700nm.
  • certain fruits and vegetables may benefit from post-harvest exposure during storage in the blue and red-orange wavelength ranges by maintaining photosynthetic activity, e.g. in the vitamin structure and in the development of phytochemicals.
  • a humidity control is further preferred, this may include the storage area, for example, a seal and / or the humidifier 44 to hold up the humidity in the storage area and thus prevent desiccation.
  • the humidity range is ideal for storing fruit and vegetable products in the range of 85% RH to near 100% RH.
  • the air humidity in the storage area can be modified via ventilation slots, mechanical slides, etc. in order to avoid excessive condensation in the storage area.
  • modified atmosphere storage can offer 39 advantages in that it can achieve slowing of product breathing and aging and reduced transpiration and degradation processes. Therefore, the storage area can optionally with the

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  • 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 réfrigérant (10), notamment un appareil réfrigérant domestique, comprenant un dispositif de conservation fraîcheur (24) pour la conservation fraîcheur longue durée d'un produit réfrigéré entreposé dans l'appareil réfrigérant (10). Le dispositif de conservation fraîcheur (24) comprend un dispositif de rayonnement (26) pour l'exposition du produit réfrigéré à un rayonnement approprié à la conservation fraîcheur du produit réfrigéré entreposé, et un dispositif (28) de commande de la composition de l'atmosphère pour commander la composition de l'atmosphère (39) entourant le produit réfrigéré entreposé.
PCT/EP2012/071255 2011-10-28 2012-10-26 Appareil réfrigérant doté d'un dispositif de conservation fraîcheur WO2013060840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110085370 DE102011085370A1 (de) 2011-10-28 2011-10-28 Kältegerät mit frischhaltevorrichtung
DE102011085370.7 2011-10-28

Publications (1)

Publication Number Publication Date
WO2013060840A1 true WO2013060840A1 (fr) 2013-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/071255 WO2013060840A1 (fr) 2011-10-28 2012-10-26 Appareil réfrigérant doté d'un dispositif de conservation fraîcheur

Country Status (2)

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DE (1) DE102011085370A1 (fr)
WO (1) WO2013060840A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105994590A (zh) * 2016-07-07 2016-10-12 北京首邦新材料有限公司 一种绿色节能保鲜装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5946919A (en) * 1997-05-02 1999-09-07 Sharper Image Corp. Food conservator system
WO2007039166A2 (fr) * 2005-09-27 2007-04-12 Pruneri, Giorgio Ensemble de conservation refrigere, en particulier a usage domestique
JP2007327741A (ja) * 2004-07-22 2007-12-20 Matsushita Electric Ind Co Ltd 冷蔵庫
WO2010023822A1 (fr) * 2008-08-27 2010-03-04 パナソニック株式会社 Contenant de stockage de produits alimentaires
EP2199714A1 (fr) * 2007-10-09 2010-06-23 Panasonic Corporation Réfrigérateur
WO2010109989A1 (fr) * 2009-03-27 2010-09-30 三菱電機株式会社 Dispositif d'atomisation électrostatique, appareils, climatiseur, et réfrigérateur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5946919A (en) * 1997-05-02 1999-09-07 Sharper Image Corp. Food conservator system
JP2007327741A (ja) * 2004-07-22 2007-12-20 Matsushita Electric Ind Co Ltd 冷蔵庫
WO2007039166A2 (fr) * 2005-09-27 2007-04-12 Pruneri, Giorgio Ensemble de conservation refrigere, en particulier a usage domestique
EP2199714A1 (fr) * 2007-10-09 2010-06-23 Panasonic Corporation Réfrigérateur
WO2010023822A1 (fr) * 2008-08-27 2010-03-04 パナソニック株式会社 Contenant de stockage de produits alimentaires
WO2010109989A1 (fr) * 2009-03-27 2010-09-30 三菱電機株式会社 Dispositif d'atomisation électrostatique, appareils, climatiseur, et réfrigérateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105994590A (zh) * 2016-07-07 2016-10-12 北京首邦新材料有限公司 一种绿色节能保鲜装置

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