WO2010118938A2 - Appareil frigorifique avec fenêtre d'observation antibuée - Google Patents

Appareil frigorifique avec fenêtre d'observation antibuée Download PDF

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Publication number
WO2010118938A2
WO2010118938A2 PCT/EP2010/053863 EP2010053863W WO2010118938A2 WO 2010118938 A2 WO2010118938 A2 WO 2010118938A2 EP 2010053863 W EP2010053863 W EP 2010053863W WO 2010118938 A2 WO2010118938 A2 WO 2010118938A2
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerating appliance
heating
viewing window
heizlackschicht
surface heating
Prior art date
Application number
PCT/EP2010/053863
Other languages
German (de)
English (en)
Other versions
WO2010118938A3 (fr
Inventor
Michael Neumann
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
Priority to CN2010800163456A priority Critical patent/CN102388283A/zh
Priority to EP10712397A priority patent/EP2419686A2/fr
Publication of WO2010118938A2 publication Critical patent/WO2010118938A2/fr
Publication of WO2010118938A3 publication Critical patent/WO2010118938A3/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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0404—Cases or cabinets of the closed type
    • A47F3/0426—Details
    • A47F3/0434—Glass or transparent panels
    • 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
    • F25D21/08—Removing frost by electric heating
    • 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

Definitions

  • the present invention relates to a refrigeration device or a cooling device with a housing which encloses an interior cooled relative to the environment.
  • This housing has at least one viewing window, through which insight into the cooled interior is made possible.
  • a refrigerator of the type in question is in particular a refrigerator and / or a freezer.
  • Refrigeration appliances with viewing windows find e.g. in private households, in particular as a wine storage cabinet in the retail and wholesale trade, in the catering trade and in medical practices as well as hospitals. Through the viewing window through the interior and cooled objects or products can be viewed or inspected without the need to open the refrigerator. Refrigeration appliances with viewing windows are thus optimally suited for inventory control or for the presentation of goods. Furthermore, viewing windows in refrigeration appliances also fulfill a design function.
  • the problem with viewing windows in refrigerators is that they can fog up.
  • Condensation or condensation from the ambient air on the outside exposed to the environment since the viewing window is quasi cooled from the inside and thus has a lower temperature than the environment.
  • cold bridges exist from the cooled interior space, so that condensed water preferably collects in these transition areas. This is mistakenly perceived as a quality defect of the refrigerator.
  • the object of the present invention is to show a new possibility to reliably prevent misting of a viewing window and / or the adjacent areas on a refrigeration device.
  • the invention solves this problem by a refrigerator according to claim 1.
  • Advantageous embodiments of the invention are specified in the dependent claims.
  • the invention also achieves the object by the use specified in the independent claim.
  • a refrigerator is proposed with a housing which encloses an environment cooled relative to the interior and which has at least one viewing window, wherein at least one viewing window and / or a window receiving this frame member of the housing is at least partially provided with a surface heating, the allows a local, homogeneous heating of the viewing window and / or the frame member.
  • the particular electrically operated surface heating allows within the heated area a uniform heat distribution by the heated surface is heated homogeneously.
  • a local area which is at risk of condensate accumulation can be uniformly heated, so that it has at least the ambient temperature, which prevents the condensation of water from the ambient air.
  • the homogeneous heating advantageously reduces possible material stresses in the viewing window and / or frame element.
  • the refrigeration device according to the invention can be made available for climatic classes, for which the previous refrigerators with viewing window were only suitable for a limited extent. These are in particular the climate classes ST (subtropics) and T (tropics). Furthermore, can be dispensed with the remedies mentioned above.
  • At the refrigerator according to the invention is e.g. possibly a simple double glazing instead of the o.g. Triple glazing sufficient. This saves material costs, production costs and weight.
  • the surface heating is formed from an electrically conductive Walkerlack Anlagen.
  • the current flows over the entire surface, which has the advantage that the heating even then works, if the paint layer is partially damaged.
  • the Schulack Anlagen may for example consist of a conductive plastic.
  • the electrically conductive heating lacquer layer is particularly preferably formed on the basis of carbon nanotubes or carbon nanotubes (CNTs).
  • Carbon nanotubes are microscopically small carbon tubular structures that are incorporated into the heating varnish and which can generate heat when an electrical voltage is applied.
  • the diameter of the carbon nanotubes is preferably in the range of 1 to 50 nm, the length of individual tubes can be up to several mm.
  • the carbon nanotubes preferably form a net-like pattern over the surface of the heating lacquer layer through which current can flow in all directions.
  • the heat generation is based e.g. on a resistance effect and / or on a vibration effect of the carbon nanotubes.
  • the carbon nanotubes can be transformed into a suitable carrier material e.g. be embedded in plastic.
  • such a heating lacquer can be applied exactly to a region of the viewing window or frame element which is critical with respect to the accumulation of condensation water as a heating lacquer layer.
  • the application may e.g. by means of a spray process or dipping process.
  • the heating varnish layer is transformed into a precisely fitting surface heating, which even works without problems even if the heating varnish layer is damaged in places. Since the current flows over the entire surface of the Edellack Anlagen, it comes to a homogeneous heating of this surface, so that the Schulack Mrs is heated almost the same at each point.
  • the heating lacquer layer does not store any heat, so that the electrical energy is almost completely converted into usable heat, with a relatively low power consumption.
  • such a Schulack Mrs allows heating or heating in no time.
  • the Schulack Mrs can also serve as a mechanical corrosion protection or moisture protection, especially during transport and intermediate storage of a refrigerator according to the invention.
  • the surface heating or Wienlack Mrs is transparent.
  • the Wienlack Mrs can be applied without impairment in visible and even transparent areas, for example on the glass of a viewing window.
  • the heating lacquer can also be formed intransparent or colored and applied, for example, in non-transparent areas such as the frame element.
  • the Schulack Mrs is applied to an exposed directly to the outside of the outside of the viewing window and / or the frame member.
  • a transparent heating lacquer is suitable for this purpose.
  • the Schulack Mrs can also be applied to an inner side of the viewing window, in particular in a double glazing mentioned above, or on a rear side of the frame member.
  • the Schulack Mrs is applied to an electrically insulating undercoat layer (insulating varnish).
  • insulating varnish insulating varnish
  • This is e.g. in a metallic frame member preferred. Regardless, it is possible to electrically contact the Edellack Mrs via a metallic frame member.
  • An undercoat layer can also be used with a plastic frame member and serves as e.g. the improvement of attachment.
  • the heating lacquer layer is sealed with a protective lacquer layer.
  • the protective lacquer layer provides mechanical protection for the heating lacquer layer, in particular if it is applied on an outer side.
  • the Schulack Mrs is operable with a low voltage. Under a low voltage is an AC voltage up to about 50 volts RMS and in particular a DC voltage to about 120 volts understood that are largely harmless to a human. As a result, the reliability can be improved. However, the Schulack Anlagen could also be operated with a normal mains low voltage with 220 volts. According to a preferred embodiment, it is provided that the heating temperature of the heating lacquer layer is adjustable. The setting is preferably carried out electrically, for example by changing the applied voltage. In addition, it is also possible to provide individual Schulackfelder that can be switched on and off separately.
  • a control unit which controls the operation of the Schulack Mrs. Controlling includes turning on and off, as well as adjusting the heating temperature.
  • the control unit is preferably integrated in the refrigeration appliance electronics.
  • At least one sensor for detecting the ambient temperature and / or ambient humidity is included, which is connected to the control unit.
  • the control or activation of the heating varnish layer by means of the control unit should take place as a function of the ambient temperature and / or the ambient humidity (which is primarily the relative air humidity of the ambient air) in order to keep the energy consumption as low as possible.
  • the (fog-free) viewing window is arranged in a door or flap of the housing.
  • the door can be designed as a swinging door or as a sliding door.
  • Such a refrigeration device is also referred to as a glass door device.
  • the electrical contacting of the Schulack Anlagen occurs e.g. via a flat cable (with a swing gate) or a busbar (with a sliding door).
  • the refrigeration device according to the invention is designed as a stand-alone device or as a built-in appliance. Particularly preferably, it is a household appliance, in particular a refrigerator, freezer or wine storage cabinet.
  • the subordinate claim relates to the use of an electrically conductive heating varnish based on carbon nanotubes as a surface heating for a viewing window or a frame member receiving this window of a refrigerator, in particular a refrigerator or freezer.
  • an electrically conductive heating varnish based on carbon nanotubes as a surface heating for a viewing window or a frame member receiving this window of a refrigerator, in particular a refrigerator or freezer.
  • FIG. 1 shows a perspective view of a refrigeration device with a viewing window.
  • Fig. 2 is a schematic perspective view of a critical corner region of the viewing window of Fig. 1, with a surface heating according to the invention.
  • Fig. 1 shows a perspective view of a refrigerator 10, which may be e.g. can act as a freestanding fridge, wine storage cabinet or freezer.
  • the refrigeration device 10 has a housing 12, which encloses or encloses a cooled interior.
  • a pivotable door 14 is arranged, via which an access to the cooled inner space is given.
  • a viewing window 16 is integrated, through which insight into the cooled interior is possible.
  • the viewing window 16 is surrounded by a frame or a frame element 18, which receives or encloses the viewing window 16.
  • an optional seal and / or insulation 20 may be provided.
  • a viewing window may also be arranged at a different location of the housing 12, e.g. in a sidewall.
  • Critical areas are, in particular, the transition areas between the viewing window 16 and the frame element 18, since there exist cold bridges from the cooled interior through the frame material. Such a critical area is bordered by dashed lines and designated 22.
  • the invention is provided to provide this region with surface heating, which is a homogeneous heating of the viewing window 16 over the relevant surface and / or of the frame element 18 and thus eliminates the temperature gradient for the collection of condensation water that causes the environment.
  • surface heating is preferably formed from an electrically conductive Banklacktik. This will be explained below with reference to FIG. 2.
  • FIG. 2 shows an enlarged view of the critical region 22 of FIG. 1.
  • the viewing window 16, here designed as double glazing, and the adjoining frame element 18 are each coated on their outer sides with a transparent Banklack Mrs 26 and 28 based on carbon nanotubes.
  • the viewing window 16 and the frame member 18 have separate Banklack Anlagenen 26 and 28, which are electrically controlled separately. Instead, a Schulack Mrs may be formed, which cohesively coated the transition areas between the viewing window 16 and the frame member 18.
  • the heating lacquer layer 26 on the viewing window 16 is electrically contacted by concealed contact elements 27a and 27b. These contact elements 27a and 27b may be e.g. be incorporated in the optional seal and / or insulation 20.
  • an undercoat layer 30 is applied to the frame element 18. This may also serve for electrical isolation, if e.g. the frame member 18 is formed of a metallic material. Furthermore, an additional protective lacquer layer can be applied over a heating lacquer layer 26 and / or 28.

Landscapes

  • 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)
  • Refrigerator Housings (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Resistance Heating (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne un appareil frigorifique (10), en particulier un réfrigérateur ou un congélateur, comprenant un carter (12), qui contient un espace intérieur refroidi par rapport à l'environnement et présente au moins une fenêtre d'observation (16). Pour empêcher un embuage, il est prévu selon l'invention qu'au moins une fenêtre d'observation (16) et/ou un élément formant le cadre (18) du carter, recevant cette fenêtre, est dotée au moins par endroits d'un chauffage de surface qui permet un réchauffement local et homogène de la fenêtre d'observation (16) et/ou de l'élément formant le cadre (18) et empêche ainsi un embuage.
PCT/EP2010/053863 2009-04-17 2010-03-25 Appareil frigorifique avec fenêtre d'observation antibuée WO2010118938A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2010800163456A CN102388283A (zh) 2009-04-17 2010-03-25 具有不结雾窗的致冷装置
EP10712397A EP2419686A2 (fr) 2009-04-17 2010-03-25 Appareil frigorifique avec fenêtre d'observation antibuée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910002469 DE102009002469A1 (de) 2009-04-17 2009-04-17 Kältegerät mit beschlagfreiem Sichtfenster
DE102009002469.7 2009-04-17

Publications (2)

Publication Number Publication Date
WO2010118938A2 true WO2010118938A2 (fr) 2010-10-21
WO2010118938A3 WO2010118938A3 (fr) 2011-01-06

Family

ID=42750852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/053863 WO2010118938A2 (fr) 2009-04-17 2010-03-25 Appareil frigorifique avec fenêtre d'observation antibuée

Country Status (4)

Country Link
EP (1) EP2419686A2 (fr)
CN (1) CN102388283A (fr)
DE (1) DE102009002469A1 (fr)
WO (1) WO2010118938A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017443666B2 (en) * 2017-12-19 2022-03-31 Hussmann Corporation Merchandiser including conductive coating to heat frame

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011006265A1 (de) * 2011-03-28 2012-10-04 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
DE102011006248A1 (de) * 2011-03-28 2012-10-04 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einer Heizvorrichtung
DE102012108449A1 (de) * 2012-09-11 2014-03-13 Ebm-Papst Mulfingen Gmbh & Co. Kg Wandring eines Lüfters mit Heizelement
DE102017004503A1 (de) 2017-02-10 2018-08-16 Liebherr Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
IT201800007178A1 (it) * 2018-07-13 2020-01-13 Apparecchiatura per la preparazione di una bevanda, comprendente un dispositivo di acquisizione di immagini

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SE505387C2 (sv) * 1995-11-28 1997-08-18 Termofrost Sweden Ab Skjutlockanordning vid kyl- och/eller frysgondol
US6144017A (en) * 1997-03-19 2000-11-07 Libbey-Owens-Ford Co. Condensation control system for heated insulating glass units
CN2475244Y (zh) * 2001-01-26 2002-01-30 孔德凯 可与窗玻璃活动拼接的多功能透明电热帘
SE525719C2 (sv) * 2003-10-01 2005-04-12 Schott Termofrost Ab System vid kyl-/frysutrymme
US20060016097A1 (en) * 2004-07-26 2006-01-26 Chiang Kuo C Moisture removal device
US7754336B2 (en) * 2006-06-30 2010-07-13 Cardinal Cg Company Carbon nanotube glazing technology
DE102007004953A1 (de) * 2007-01-26 2008-07-31 Tesa Ag Heizelement

Non-Patent Citations (1)

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Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017443666B2 (en) * 2017-12-19 2022-03-31 Hussmann Corporation Merchandiser including conductive coating to heat frame
US11484133B2 (en) 2017-12-19 2022-11-01 Hussmann Corporation Merchandiser including conductive coating to heat frame

Also Published As

Publication number Publication date
EP2419686A2 (fr) 2012-02-22
WO2010118938A3 (fr) 2011-01-06
DE102009002469A1 (de) 2010-10-21
CN102388283A (zh) 2012-03-21

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