EP2679911A1 - Lampe d'espace de cuisson fermée - Google Patents

Lampe d'espace de cuisson fermée Download PDF

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Publication number
EP2679911A1
EP2679911A1 EP13172281.1A EP13172281A EP2679911A1 EP 2679911 A1 EP2679911 A1 EP 2679911A1 EP 13172281 A EP13172281 A EP 13172281A EP 2679911 A1 EP2679911 A1 EP 2679911A1
Authority
EP
European Patent Office
Prior art keywords
cooking chamber
light
chamber light
compensation element
pressure compensation
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Withdrawn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
EP13172281.1A
Other languages
German (de)
English (en)
Inventor
Joschka BARZ
Robert KÜHN
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2679911A1 publication Critical patent/EP2679911A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/008—Illumination for oven cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a closed cooking light with at least one light source received therein.
  • the invention further relates to a cooking appliance having a cooking chamber and at least one cooking chamber lamp protruding into the cooking chamber.
  • the object is achieved by a closed cooking light with at least one light source received therein, wherein in the cooking light at least one translucent heat shield is taken from airgel, wherein the at least one heat shield is at least partially in a beam path of the at least one light source and wherein an interior of the cooking compartment is pressure compensated.
  • Airgel is highly thermally insulating (with a thermal conductivity of only between 0.014 and 0.05 W / (mK)), so that a heat flow in the direction of the (relatively sensitive) light source can be significantly reduced.
  • Another advantage of the airgel is that its melting point is so high (with silica airgel eg at about 1200 ° C) that it does not melt or deform appreciably elastically or plastically at temperatures that occur in household appliances (up to 500 ° C in a cooking chamber of a baking oven during a pyrolysis operation).
  • airgel is non-flammable and non-toxic.
  • airgel is transparent or practically transparent (quasi-transparent). Thus, a sufficiently high light transmission of light generated by the at least one light source is achieved.
  • the closed design prevents at least that vapors or cleaning agent penetrate into the interior and there components, in particular the at least one light source or the airgel damage. Due to the fact that the interior of the cooking chamber light can be compensated for pressure, a mechanical load due to thermal cycling can still be reduced.
  • the at least one light source may in particular comprise at least one semiconductor light source, such as e.g. comprise a light emitting diode.
  • the cooking chamber light has a semipermeable pressure compensation element for pressure equalization between the interior and an environment.
  • the semi-permeable pressure compensation element prevents vapors, etc. from entering the interior, but allows air to pass through the pressure.
  • the at least one semipermeable pressure compensation element is or has at least one membrane.
  • a membrane is particularly simple, inexpensive and can be used with a small space requirement.
  • the at least one membrane is preferably exchangeable.
  • the at least one semipermeable pressure compensation element has at least one combination of a valve and a filter unit.
  • a valve Through the valve, a volume of a compensating air flow is minimized, allowing a long-lasting filter capability of the filter unit.
  • the filter unit is preferably exchangeable.
  • the at least one semipermeable pressure compensation element is permeable to air and liquid impermeable.
  • air permeability Pressure equalization is provided, which prevents the penetration of oil, (liquid) water, cleaning fluid, etc., through the liquid impermeability (for liquids, including droplets).
  • the at least one semipermeable pressure compensation element is vapor-permeable. This allows the use of a comparatively simple and inexpensive pressure compensation element. Although it can get moisture from the environment into the interior, but this amount is relatively low due to the retention of droplets and can also be easily evaporated again in a warming of the interior. It is exploited that, although moisture can cause a material turbidity of the airgel, but this is typically reversible by heating the airgel to a temperature above 100 ° C. In addition, a risk of corrosion is kept low.
  • the at least one semipermeable pressure compensation element is covered by a permeable protective cover, e.g. a grid or perforated screen.
  • the at least one semipermeable pressure compensation element is arranged in a cold region of the cooking chamber light. This results in the advantage that the pressure compensation element is thermally loaded comparatively low.
  • a cold area of the cooking chamber light may in particular be understood as an area which is not directed into the cooking space and / or receives no direct heat radiation from a heat generating element (heating body, flash lamp, etc.).
  • the cooking chamber light can in particular be hermetically sealed except for the at least one pressure compensation element.
  • the cooking chamber light is tightly closed, a part of the interior is filled with a compressible (elastic) compressible material and this material is at least substantially adjacent to a beam path of the at least one light source.
  • the cooking compartment light may be completely sealed, since that in the interior, when heated expanding gas compresses the material. This compression of the material leads to a pressure drop in the interior and is reversible when cooled.
  • the material may e.g. Silicone, as silicone can be easily compressed elastically, is inexpensive, is easily malleable and is relatively resistant to chemical reactions, heat and light radiation.
  • LEDs can be potted with silicone.
  • the cooking chamber light has a hollow reflector.
  • This enables effective beam shaping.
  • a light exit surface of the hollow reflector may be covered for example by means of a translucent cover plate.
  • the cover plate may e.g. be transparent or diffused (as a diffuser plate). Due to the pressure compensation, a wall thickness of the reflector can be particularly low.
  • the object is also achieved by a cooking appliance with a cooking chamber and at least one cooking chamber protruding into the cooking chamber (including adjacent thereto) as described above.
  • the FIG. Shows a sectional side view of a cooking appliance 11 with a cooking chamber 13 delimited by a cooking chamber wall 12 and at least one cooking chamber light 14 projecting into the cooking chamber 13.
  • the cooking chamber light 14 is configured as a closed cooking chamber light with an interior 15 in which or which a light source in the form of a light-emitting diode 16 is received.
  • the light-emitting diode 16 is arranged on a front side 17 of a printed circuit board 18.
  • the printed circuit board 18 is fastened to the cooking chamber wall 12 via a holder 19 and faces the cooking chamber wall 12 with its rear side 28.
  • a hollow reflector 20 In front of the light emitting diode 16 (optically downstream of the light emitting diode 16) there is a hollow reflector 20, which is provided at its light exit surface E by a light-permeable cover 21 is covered.
  • the hollow reflector 20 includes a sleeve 23, which sits laterally of the light emitting diode 16 on the circuit board 18, via a sealing ring 24.
  • the cover 21, the hollow reflector 20, the sleeve 23 and the circuit board 18 limit and form the hollow, without further Measures tight interior 15.
  • a translucent heat shield 25 made of airgel.
  • the heat shield 25 is located in a beam path of the light emitting diode 16 and shields the light emitting diode 16 in front of a heat radiation urged out of the cooking chamber 13 by the cover 21.
  • the heat shield 25 is itself translucent, so that a light output of the cooking chamber 14 is not or not significantly reduced.
  • the sleeve 23 can also be designed to be reflective on the inside.
  • the cooking chamber 14 has a semipermeable pressure compensation element in the form of a membrane 26 in the region of a corresponding recess in the sleeve 23.
  • the membrane 26 is permeable to air and permeable to vapor, but impermeable to liquids. Possibly in the interior 15 penetrating water vapor can be expelled during operation of the cooking chamber 13.
  • the membrane 26 is covered on the outside by a permeable protective cover in the form of a grid 27. So that the membrane 26 is thermally stressed only comparatively low, it is located in a cold area of the cooking chamber 14. This may mean, in particular, that the membrane is not directly a by a radiant heater o.ä. generated heat radiation is exposed.
  • the cooking compartment light 14 may have further housing parts, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
EP13172281.1A 2012-06-28 2013-06-17 Lampe d'espace de cuisson fermée Withdrawn EP2679911A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012211202.2A DE102012211202A1 (de) 2012-06-28 2012-06-28 Geschlossene Garraumleuchte

Publications (1)

Publication Number Publication Date
EP2679911A1 true EP2679911A1 (fr) 2014-01-01

Family

ID=48669775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13172281.1A Withdrawn EP2679911A1 (fr) 2012-06-28 2013-06-17 Lampe d'espace de cuisson fermée

Country Status (2)

Country Link
EP (1) EP2679911A1 (fr)
DE (1) DE102012211202A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017055400A1 (fr) * 2015-10-01 2017-04-06 Osram Opto Semiconductors Gmbh Ensemble comprenant un composant optoélectronique et une couche de protection à base d'aérogel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114253B4 (de) * 2015-08-27 2017-06-22 Bjb Gmbh & Co. Kg Backofenleuchte
DE102016010198A1 (de) 2016-08-23 2018-03-01 Emz-Hanauer Gmbh & Co. Kgaa Haushalts-Backofen mit Muffelbeleuchtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347055A (en) * 1943-01-06 1944-04-18 Gen Electric Electric lamp
DE4240096A1 (de) * 1992-11-28 1994-06-01 Juno Groskuechen Gmbh Druckausgleichsvorrichtung
EP0979971A1 (fr) * 1998-08-07 2000-02-16 Siteco Beleuchtungstechnik GmbH Boítier pour luminaire avec un dispositif d'équilibrage de la pression
DE102005044347A1 (de) * 2005-09-16 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungsvorrichtung für Backöfen und Backofen
WO2010094567A1 (fr) * 2009-02-23 2010-08-26 Osram Gesellschaft mit beschränkter Haftung Dispositif d'éclairage avec une source lumineuse semi-conductrice et au moins un capteur
DE102009027912A1 (de) * 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungseinrichtung für den Behandlungsraum eines Backofens

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542457A1 (de) * 1985-11-30 1987-06-04 Bosch Gmbh Robert Scheinwerfer fuer fahrzeuge, insbesondere fuer kraftfahrzeuge
DE4014360A1 (de) * 1990-05-04 1991-11-07 Bosch Siemens Hausgeraete Beleuchtungseinrichtung fuer einen herd
DE9015721U1 (de) * 1990-11-16 1992-03-12 Maxs Ag, Sachseln Bestrahlungsvorrichtung
DE4234919C2 (de) * 1992-10-16 1994-11-17 Audi Ag Gehäuse mit einer darin angeordneten Wärmequelle, insbesondere an einem Kraftfahrzeug
DE4340710C2 (de) * 1993-11-30 1999-11-11 Fer Fahrzeugelektrik Gmbh Überdruckventil an einem Leuchtengehäuse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347055A (en) * 1943-01-06 1944-04-18 Gen Electric Electric lamp
DE4240096A1 (de) * 1992-11-28 1994-06-01 Juno Groskuechen Gmbh Druckausgleichsvorrichtung
EP0979971A1 (fr) * 1998-08-07 2000-02-16 Siteco Beleuchtungstechnik GmbH Boítier pour luminaire avec un dispositif d'équilibrage de la pression
DE102005044347A1 (de) * 2005-09-16 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungsvorrichtung für Backöfen und Backofen
WO2010094567A1 (fr) * 2009-02-23 2010-08-26 Osram Gesellschaft mit beschränkter Haftung Dispositif d'éclairage avec une source lumineuse semi-conductrice et au moins un capteur
DE102009027912A1 (de) * 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Beleuchtungseinrichtung für den Behandlungsraum eines Backofens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017055400A1 (fr) * 2015-10-01 2017-04-06 Osram Opto Semiconductors Gmbh Ensemble comprenant un composant optoélectronique et une couche de protection à base d'aérogel

Also Published As

Publication number Publication date
DE102012211202A1 (de) 2014-01-02

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