EP2379947A1 - Lampe pour appareil électroménager - Google Patents

Lampe pour appareil électroménager

Info

Publication number
EP2379947A1
EP2379947A1 EP09768523A EP09768523A EP2379947A1 EP 2379947 A1 EP2379947 A1 EP 2379947A1 EP 09768523 A EP09768523 A EP 09768523A EP 09768523 A EP09768523 A EP 09768523A EP 2379947 A1 EP2379947 A1 EP 2379947A1
Authority
EP
European Patent Office
Prior art keywords
radiator
cavity
household appliance
radiation
infrared
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Withdrawn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
EP09768523A
Other languages
German (de)
English (en)
Inventor
Miguel Angel BUÑUEL MAGDALENA
Francisco Javier Ester Sola
Jose-Ramon Garcia Jimenez
Damaso Martin Gomez
José Ignacio Peña Torre
Daniel Sola Martinez
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 EP2379947A1 publication Critical patent/EP2379947A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/744—Lamps as heat source, i.e. heating elements with protective gas envelope, e.g. halogen lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6444—Aspects relating to lighting devices in the microwave cavity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture

Definitions

  • the invention relates to a radiator for a household appliance, in particular for a stove, a household appliance with at least one radiator and a method for producing a radiator.
  • IR radiation resistance heating elements For baking food by means of infrared (IR) radiation resistance heating elements are known, which are arranged in a cooking chamber of a baking oven.
  • the object of the invention is to provide a particularly precise, flexible and efficient way of generating radiation in household appliances, in particular for baking.
  • the spotlight for a household appliance has at least one cavity, which is filled with at least one light source.
  • the at least one luminous means can be excited by means of an electromagnetic excitation field, in particular an alternating magnetic field, for the emission of radiation, in particular for the emission of infrared radiation.
  • the radiator is designed in particular as an infrared radiator and / or as a light or beacon.
  • the illuminant can be, for example, an infrared illuminant. Accordingly, the radiation may comprise an infrared radiation.
  • This spotlight has the advantages that the light source is excited in a timely manner and thus the light source can emit heat quickly. In the same way, heat emission is terminated promptly when the excitation field is switched off. Consequently, a heat input can be controlled very precisely and directly.
  • the excitation of the light source in the cavity is particularly reliable and efficient. Also, various, in particular easy to implement, variations for the cavity are possible. This requires a correspondingly high degree of design flexibility.
  • An embodiment is that a radiator with at least one cavity is at least partially, in particular completely, surrounded by a glassy body.
  • the vitreous body may be a body of glass, glass ceramic or a combination of both. Due to its easy integration, the spotlight can be used flexibly.
  • the body surrounding the cavity may comprise any other light-transmissive, in particular infrared-permeable, and preferably high-temperature-resistant material, for example a transparent ceramic or a plastic.
  • the body may be made of non-opaque material.
  • Heat radiation a radiator with a plate-shaped glassy body can be used.
  • the at least one cavity can be made flat.
  • the cavity is designed electrodeless.
  • the at least one IR illuminant present in the cavity can be excited by means of an external excitation field, similar to the action principle of a zero ground.
  • an embodiment is particularly durable and reliable.
  • the radiator may comprise at least one excitation means for generating the electromagnetic excitation field, e.g. a high frequency (HF) generator.
  • excitation means for generating the electromagnetic excitation field, e.g. a high frequency (HF) generator.
  • HF high frequency
  • the electromagnetic excitation field can preferably be generated by means of at least one coil.
  • the excitation means may comprise at least one coil.
  • At least one electrode preferably two or more electrodes, can be introduced into at least one cavity filled with lamps for generating the electromagnetic excitation field.
  • illuminants all suitable illuminants, in particular infrared illuminants, can be used, which are under an electromagnetic Excitation field for illumination, for example in the infrared range, in particular in the near infrared range (NIR), are excitable, either individually or in a composition or mixture.
  • electromagnetic Excitation field for illumination for example in the infrared range, in particular in the near infrared range (NIR)
  • NIR near infrared range
  • the illuminant may be a noble gas or a combination of
  • noble gases are non-toxic and inert.
  • other illuminants are also conceivable, e.g. Mercury or mercury compounds, halogens, carbon dioxide or solid light bulbs (e.g., phosphor-based bulbs).
  • the emitted radiation has a maximum at a wavelength that allows a particularly good penetration for food.
  • the radiation may have a maximum in the range of 1, 3 microns.
  • a radiator can be used which has a major part (e.g., more than 50%) of its energy, e.g. in the infrared range, in particular in the near infrared range.
  • the luminous means can emit part of its radiation energy in the form of visible light, so that the heat radiation surface can be optically well recognized by a user and possibly avoided. This increases the operating safety.
  • a household appliance which has at least one radiator as described.
  • the household appliance preferably has a cooking chamber (for example a stove, a built-in oven or a microwave oven), wherein at least one radiator is arranged on or in at least one wall of the cooking chamber.
  • a cooking chamber for example a stove, a built-in oven or a microwave oven
  • at least one radiator is arranged on or in at least one wall of the cooking chamber.
  • a food located in the cooking chamber can be heated, alone or together with conventionally present heating means, such as a bottom heat radiator, a top heat radiator, a circulating air heater, a microwave generating unit, etc.
  • the household appliance may also have a hob with a cooking zone, for example, a single hob or a stove, wherein at least one radiator at least one Cooking zone for heating a cooking dish located on the cooking zone is used.
  • a hob with a cooking zone for example, a single hob or a stove, wherein at least one radiator at least one Cooking zone for heating a cooking dish located on the cooking zone is used.
  • the cavity can be arranged in or on the cooking plate of the hob and can also emit visible light for safety reasons or for the information of a user.
  • a cooking zone can be determined by the cavity.
  • the cavity is introduced into a particular glassy body. This can e.g. done by laser processing with a focal point within the body, as a joining process with resulting joining surfaces is avoided.
  • a method can be used for easy processing of the body, comprising the step of introducing at least one recess in a bottom of the body and a subsequent covering the free opening of the recess with a cover, in particular by gluing the open surface with a glass plate.
  • 1a shows a top view of a glass ceramic plate of a radiator
  • 1 b shows a cross-sectional side view of a radiator with the glass-ceramic plate of FIG. 1 a and an additional excitation field source
  • 2a shows a sectional side view of a glass ceramic plate produced according to another method in a first production step
  • FIG. 2b shows a sectional side view of the glass-ceramic plate from FIG. 2a in a second production step
  • 3a shows a sectional view in side view one according to another
  • FIG. 3 b shows a top view of the glass ceramic plate from FIG. 3 a.
  • the infrared radiator described by way of example below may be any radiator, in particular an arbitrary light or luminous radiator.
  • FIG. 1a shows a top view of an IR-transparent glass ceramic plate 1 of a radiator, in particular an infrared or heat radiator, in which a rectangular heat radiation zone 2 with length 11 and width 12 is introduced.
  • the heat radiation zone 2 is defined by means of a coherent cavity 3 completely surrounded by the material of the glass-ceramic plate 1, which acts as an infrared radiation area.
  • the cavity 3 is filled with at least one infrared illuminant (not shown), which is excited in an electromagnetic excitation field for the emission of heat radiation.
  • a coil 4 To generate the excitation field is located below the cavity 3, a coil 4 and generates an upward (in the z direction) directed into the cavity 3 alternating magnetic field.
  • the at least one infrared illuminant which is provided here in the form of one or more noble gases, is ionized by means of the alternating magnetic field and emits inter alia IR light of a wavelength in a range of 1.3 ⁇ m, which at least partially passes through the glass ceramic plate 1 at the top 5 penetrates.
  • the cavity 3 may function similar to a no-luminescent tube. On the top 5, the heat radiation can be transmitted to a parked on the heat radiation zone 2 cooking utensils.
  • an IR reflector (not shown) may be present below the cavity 3, which is largely permeable to the excitation field.
  • the cavity 3 has to increase stability, in particular for protection against breakage of the upper cavity wall, parallel and equidistantly arranged ribs 6.
  • the infrared illuminant In order to identify the heat radiation zone 2 for a user, the infrared illuminant also emits light in the visible range, so that the heat radiation zone 2 shines in color or recognizable.
  • the wavelength of the emitted visible and / or infrared light can be adjusted in each case by a type of the illuminant, a pressure in the cavity and / or by means of an excitation frequency.
  • a glass ceramic plate provided without the cavity 3 is first of all processed by a laser processing method in which the laser is focused in the glass ceramic plate and generates the cavity 3 there. Furthermore, a through hole (not shown) may be formed between the cavity 3 and the outside. Through the through-hole, the cavity can be vented by means of a vacuum pump by creating a negative pressure in a range of 10 "1 atm and 10 " 5 atm. Then, an infrared illuminant, such as a noble gas or a noble gas mixture, are introduced through this through hole into the cavity 3 until a comparatively lower negative pressure prevails in the cavity 3. Thereafter, the through hole is hermetically sealed, for example by means of a glass adhesive.
  • FIG. 2a shows a sectional side view of a glass ceramic plate 7 produced by a different method in a first production step.
  • the glass ceramic plate 7 is first divided into two parts in an upper part 8 and a lower thin cover plate 9.
  • a rectangular recess 10 has been inserted by means of a surface-removing machining method, e.g. by means of laser ablation, sandblasting, water jet machining, micro machining, etc.
  • the cover plate 9 After introduction of the recess 10, the cover plate 9, as shown in Fig.2b, placed in a subsequent manufacturing step in the direction indicated in Figure 2a arrow direction on the underside of the upper part 8 and firmly connected to it, so that forms a negative pressure cavity 11 with the recesses 10.
  • the upper part 8 and the cover plate 9 thus form the glass ceramic plate 7.
  • 3 a shows a sectional side view of a glass ceramic plate 12 produced according to a further method, on the underside of which a separately produced glass ceramic element 13 protrudes, which is connected to a solid upper plate part 14 (in particular inseparable) and which has a cavity 15 filled with fluorescent material.
  • FIG. 3 b shows a plan view from above of the glass-ceramic plate 12 with the FIG
  • Glass ceramic element 13 from Fig.3a The glass ceramic element 13 and an upper plate part 14 form the glass ceramic plate 12 by way of example.
  • a lower outer contour 16 of the glass ceramic element 13 and thus of the cavity 15 is step-shaped executed and thereby generates for a user at the top 5 a similar visible pattern as the cavities 3 and 11 respectively.
  • the embodiments shown have the advantages that heat at the heat radiation zone (see, for example, reference numeral 2 in Fig. 1b) can be efficiently generated and rapidly switched on and off.
  • the cavity acting as an infrared radiation region can be integrated into the glass-ceramic plate and, in particular, can be completely realized in glass-ceramic, the glass-ceramic plate can be used simply and flexibly. Also, the shape of the cavity is variable and thus allows a high degree of design flexibility.
  • the present invention is not limited to the embodiments shown.
  • mercury, phosphorus or other non-gaseous substances can also be used as the infrared illuminant.
  • the infrared illuminant is not limited to noble gases as luminous gases.
  • halogens, halogen mixtures or carbon dioxide can also be used.
  • electrodes may also be introduced into the cavity in order to generate the excitation field.
  • This embodiment is independent of the position and strength of an external excitation source.
  • electrodeless cavities and cavities equipped with electrodes can be used individually or together for a cooking plate or cooking zone.
  • any other IR-transparent and preferably heat-resistant material may be used, such as glass, plastic or ceramic.
  • the shape of the at least one cavity is not limited to an open, a closed or an angular basic shape.
  • the at least one cavity may also be configured oval or annular.
  • one or more cavities can be configured spherical, drop-shaped or line-shaped.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

La présente invention concerne une plaque de cuisson transparente comportant au moins un volume creux pourvu d'au moins un milieu luminescent produisant de la lumière lorsqu'il est excité par un champ d'excitation électromagnétique. Le plan de cuisson à induction comporte au moins une telle plaque de cuisson. Le procédé de fabrication de cette plaque de cuisson comporte au moins les étapes suivantes: (a) élimination de l'air contenu dans le volume creux; (b) remplissage du volume creux avec le milieu luminescent considéré; et (c) fermeture du volume creux.
EP09768523A 2008-12-19 2009-12-07 Lampe pour appareil électroménager Withdrawn EP2379947A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200803713A ES2350212B1 (es) 2008-12-19 2008-12-19 Radiador para un aparato domestico.
PCT/EP2009/066470 WO2010069790A1 (fr) 2008-12-19 2009-12-07 Lampe pour appareil électroménager

Publications (1)

Publication Number Publication Date
EP2379947A1 true EP2379947A1 (fr) 2011-10-26

Family

ID=42097267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768523A Withdrawn EP2379947A1 (fr) 2008-12-19 2009-12-07 Lampe pour appareil électroménager

Country Status (5)

Country Link
US (1) US20110233195A1 (fr)
EP (1) EP2379947A1 (fr)
CN (1) CN102257326A (fr)
ES (1) ES2350212B1 (fr)
WO (1) WO2010069790A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519285A (en) * 1992-12-15 1996-05-21 Matsushita Electric Works, Ltd. Electrodeless discharge lamp
FR2792158B1 (fr) * 1999-04-09 2001-05-18 Jaeger Regulation Foyer de cuisson par induction modulable a rayonnement reduit et procede de realisation
US6300602B1 (en) * 2000-05-26 2001-10-09 Bsh Home Appliances Corporation Light ring display for cooktop
DE10110792B4 (de) * 2001-03-06 2004-09-23 Schott Glas Keramisches Kochsystem mit Glaskeramikplatte,Isolationsschicht und Heizelementen
KR100915416B1 (ko) * 2002-03-19 2009-09-03 파나소닉 주식회사 유도 가열장치
WO2005041245A1 (fr) * 2003-10-24 2005-05-06 Matsushita Electric Works, Ltd. Lampe a decharge sans electrode
JP2006134627A (ja) * 2004-11-04 2006-05-25 Matsushita Electric Ind Co Ltd 誘導加熱調理器
JP2006181307A (ja) * 2004-12-27 2006-07-13 Asahi Denshi Kogyo Kk 電気式加熱調理器
JP2007018787A (ja) * 2005-07-06 2007-01-25 Matsushita Electric Ind Co Ltd 調理器
GB2435233A (en) * 2006-02-18 2007-08-22 Tyco Electronics Infrared splicing
CN101118834A (zh) * 2006-07-31 2008-02-06 广东雪莱特光电科技股份有限公司 一种高强度放电红外辐射光源
ES2322006B1 (es) * 2007-04-19 2010-03-04 Bsh Electrodomesticos España, S.A. Dispositivo de aparato domestico con una plancha de un material transparente al menos parcialmente.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010069790A1 *

Also Published As

Publication number Publication date
US20110233195A1 (en) 2011-09-29
CN102257326A (zh) 2011-11-23
ES2350212A1 (es) 2011-01-20
WO2010069790A1 (fr) 2010-06-24
ES2350212B1 (es) 2011-11-11

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