EP2300761A1 - Congélateur - Google Patents

Congélateur

Info

Publication number
EP2300761A1
EP2300761A1 EP09741574A EP09741574A EP2300761A1 EP 2300761 A1 EP2300761 A1 EP 2300761A1 EP 09741574 A EP09741574 A EP 09741574A EP 09741574 A EP09741574 A EP 09741574A EP 2300761 A1 EP2300761 A1 EP 2300761A1
Authority
EP
European Patent Office
Prior art keywords
emitting diodes
light
parts
insulating glass
condensation
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Withdrawn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
EP09741574A
Other languages
German (de)
English (en)
Inventor
Wolfgang Flatz
Mario Maier
Fritz Atschreiter
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.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
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 Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2300761A1 publication Critical patent/EP2300761A1/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Withdrawn legal-status Critical Current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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate

Definitions

  • the invention relates to freezer furniture with an electric
  • the heater is designed so that the temperature of the surfaces is always higher than the dew point temperature of water even in the worst case. This has the consequence that the heater is oversized under appropriate weather conditions, which is why it has already been proposed (DE 31 35 799 Al) to regulate the heating current in the sense of always tightly exceeding the dew point temperature at the surfaces.
  • these electrical heating systems in particular electrical resistance heaters, still have a negative impact on the overall energy balance of the refrigeration units without any additional positive effect.
  • the invention has the object to design refrigeration cabinets such that they have an over the prior art improved energy balance and the introduction of excessive waste heat is avoided in the cooling system.
  • the invention achieves this object by virtue of the fact that the parts to be preserved from condensation form heat sinks for light-emitting diodes which function as electrical heating.
  • light-emitting diodes are thus provided in those areas or parts of the freezer furniture surface at which condensation formation is to be avoided.
  • the condensation to be preserved parts are used as a heat sink for effective as an electric heater LEDs, making it possible to dispense with the separate, to be provided for the LEDs heat sink partially or completely.
  • the light-emitting diodes are applied, for example, directly to said parts or inserted into this. Further advantages of the invention are a part and cost reduction.
  • the space requirement is significantly reduced and an optionally still be provided frame heating can be reduced in performance or possibly completely eliminated.
  • the invention avoids the direct introduction of heat into the cooling circuit and thus improves the overall energy balance of the respective deep-freeze cabinet.
  • the light-emitting diodes are mounted in the metal frame of deep-frozen furniture doors. and the metal frame forms the heat sink. This additionally saves space in the area of the doors, which also eliminates the need for additional frame heating in this area or "can be reduced in terms of performance.” In addition, particularly advantageous illumination of the goods to be presented in the cooling furniture results.
  • Another prominent location in a refrigerated cabinet is the frontal area of shelves, in which area the cold air curtain of the refrigeration cycle usually passes to ensure effective heat removal from the refrigerated cabinet.
  • the light emitting diodes front front rails of shelves are assigned and the rails form the heat sink.
  • This area is usually also formed at the same time as a holder for the price or award signs.
  • the light emitting diodes are inserted with the interposition of thermally conductive materials in the heat sink forming parts.
  • the thermally conductive materials od in the usual way thermal compounds, sauceleitfolien. The like. be.
  • the invention relates to the use of light-emitting diodes as an electric heater to avoid condensation on at least parts of the freezer furniture surface.
  • the invention also relates to a method for electrical
  • Heating to avoid condensation on at least parts of the Lucas constructiveober Design wherein the parts to be preserved from condensation are heated both via effective as an electric heater LEDs and an additional existing electrical heating, and the control of the LEDs and the additional existing electric heater to each other are coordinated.
  • the light-emitting diodes acting as electrical heating can be arranged in the region between two insulating glass panes, namely in the region of the peripheral edge forming the insulation of the insulating glazing.
  • the light-emitting diodes on the one hand on a provided between the two insulating glass panes, preferably metallic, spacing profile are arranged or on the other hand are provided on a provided between the two insulating glass panes L-profile, with a leg between the two insulating glass he - Stretches and the other, parallel to the insulating glass aligned legs which carries light-emitting diodes.
  • FIG. 1 shows a shelf of a freezer cabinet according to the invention with an effective as an electric heater LED in cross section
  • An inventive cooling device not shown in detail, in particular freezer furniture, comprises an electric heater 2 for preventing condensation on parts of the cooling furniture surface.
  • an electric heater 2 for preventing condensation on parts of the cooling furniture surface.
  • light-emitting diodes 4 are provided, which are attached at least to the parts of the Tiefkühl combinOber Structure on which the condensation should be avoided.
  • the parts to be preserved from condensation form heatsinks 5 for the light-emitting diodes 4 that act as electrical heaters 2.
  • the LEDs 4 are assigned to the front end profile rails 6 of the shelves 3 and form the rails 6, the heat sink 5 from.
  • the LEDs are inserted with the interposition of thermally conductive materials in the rails or optionally applied to a thermally conductive, also the power supply of the LEDs ensuring conductor strip 7, which preferably adhered to the parts to be preserved against condensation forming od. Like. is.
  • the LEDs 4 are covered by a potting compound 8.
  • This lenticular potting compound 8 which is advantageously highly transparent, protects on the one hand the light emitting diodes 4 and on the other hand acts as a lens to align the emitted light emitted from the light emitting diodes 4 and optimally decoupled.
  • the potting compound has a lens effect Contain color conversion material, by means of which, for example, the light of a blue light emitting diode 4 can be converted into white light.
  • the light-emitting diodes 4 are preferably applied in surface mount technology (SMT) or chip-on-board technology (COB) on the conductor strip 7.
  • SMT surface mount technology
  • COB chip-on-board technology
  • a very good thermal coupling of the LED to the conductor strip 7 can be achieved.
  • the chip-on-board technology allows a very close assembly of LEDs 4, whereby a very homogeneous light distribution can be achieved.
  • the conductor strip 7, for example, by means of a double-sided adhesive tape 9, which advantageously has a high thermal conductivity, are attached to the heat sink 5.
  • the conductor strip 7 can also carry part of the control electronics for the light emitting diodes 4.
  • connection between the heat sink 5 and the conductor strip 7 can alternatively be realized by a double-sided adhesive heat-conducting foil or by a plurality of screw connections, wherein in the case of the screw connections, a heat-conducting foil or heat-conducting paste can be provided between the heat sink 5 and the conductor strip 7.
  • the conductor strip 7 may at least partially be formed as a reflector in order to achieve a better Lichtauskoppelung by the LEDs 4.
  • the freezer can also have temperature sensors.
  • at least one temperature sensor can be arranged in the vicinity of the light-emitting diodes 4, for example on the conductor strip 7. But it can also be arranged a temperature sensor in the vicinity of the still existing electric heater 2. With such a temperature sensor, for example, the temperature of the LEDs 4 can be monitored and tions of the temperature in the refrigerator are reacted. If, for example, the heating is activated only for certain periods of time, then the operation of the light emitting diodes 4 can be adapted to it. For example, at a high temperature, the power or the brightness of the light-emitting diodes 4 can be regulated back or, if a higher heating power is required, the power or the brightness of the light-emitting diodes 4 can be increased.
  • the control of the light-emitting diodes (4) can be carried out depending on the control of the additional existing electric heater.
  • the control of the LEDs (4) can be done depending on a measurement of a temperature sensor.
  • the light-emitting diodes 4 which act as electrical heating 2 are arranged in the region between two insulating glass shades 10, namely in the area of the peripheral edge forming the insulation 11 of the insulating glazing 12.
  • the light-emitting diodes 4 are arranged on the one hand on a provided between the two insulating glass panes 10, preferably metallic, Abstandsprofill3 (Fig. 4) and on the other hand arranged on a provided between the two insulating glass panes 10 L-profile, wherein a Leg 14 extends between the two insulating glass panes 10 and the other, parallel to the insulating glass panes 10 aligned legs 15, the LEDs 4 carries.
  • the light-emitting diodes 4 on the conductor strip 7 can also be mounted already in a prefabricated profile strand 20 and as a complete light emitting diode module in the freezer, preferably on a rail 6, are attached.
  • the profile strand 20 is preferably designed as a metallic carrier with good heat-conducting properties, which preferably has cooling ribs for improving the heat dissipation.
  • the profile strand 20 can be closed by a transparent cover 21.
  • the transparent cover 21 may have a lens shape and thereby promote improved light output.
  • the transparent cover 21 may optionally contain a color conversion substance by means of which, for example, the light of a blue light-emitting diode 4 can be converted into white light.
  • the lighting of the freezer cabinet with light sources can be made, which are selectable in their color output (radiated wavelength) and adapted, for example, to the food to be illuminated.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un congélateur comprenant un chauffage électrique (2) destiné à empêcher la formation d'eau de condensation sur au moins des parties de la surface du congélateur. En vue d'obtenir des conditions de construction avantageuses, les parties à protéger de la formation d'eau de condensation forment des corps de refroidissement (5) pour des diodes électroluminescentes (4) qui se comportent comme des éléments de chauffage électrique (2).
EP09741574A 2008-05-05 2009-05-05 Congélateur Withdrawn EP2300761A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0026008U AT10757U1 (de) 2008-05-05 2008-05-05 Tiefkühlmöbel
PCT/AT2009/000189 WO2009135243A1 (fr) 2008-05-05 2009-05-05 Congélateur

Publications (1)

Publication Number Publication Date
EP2300761A1 true EP2300761A1 (fr) 2011-03-30

Family

ID=40846036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09741574A Withdrawn EP2300761A1 (fr) 2008-05-05 2009-05-05 Congélateur

Country Status (4)

Country Link
EP (1) EP2300761A1 (fr)
AT (1) AT10757U1 (fr)
DE (1) DE112009001021A5 (fr)
WO (1) WO2009135243A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9797650B2 (en) * 2014-01-10 2017-10-24 Illinois Tool Works Inc. Thermally insulated door assembly and method
DE102015003215A1 (de) * 2014-12-31 2016-06-30 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006067777A2 (fr) * 2004-12-23 2006-06-29 Nualight Limited Eclairage de vitrine
JP2007182704A (ja) * 2006-01-06 2007-07-19 Air Cycle Sangyo Kk 照明付き建具
WO2008026137A2 (fr) * 2006-08-31 2008-03-06 Koninklijke Philips Electronics N.V. Dispositif de stockage à froid
WO2009016436A2 (fr) * 2006-08-31 2009-02-05 Koninklijke Philips Electronics N.V. Porte pour dispositif de stockage au froid tel qu'un réfrigérateur ou un congélateur
JP2008093250A (ja) * 2006-10-13 2008-04-24 Gac Corp ショーケース

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009135243A1 *

Also Published As

Publication number Publication date
AT10757U1 (de) 2009-09-15
WO2009135243A1 (fr) 2009-11-12
DE112009001021A5 (de) 2011-03-10

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