EP0247574A1 - Disposiif de chauffage pour appareil à micro-ondes - Google Patents

Disposiif de chauffage pour appareil à micro-ondes Download PDF

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Publication number
EP0247574A1
EP0247574A1 EP87107640A EP87107640A EP0247574A1 EP 0247574 A1 EP0247574 A1 EP 0247574A1 EP 87107640 A EP87107640 A EP 87107640A EP 87107640 A EP87107640 A EP 87107640A EP 0247574 A1 EP0247574 A1 EP 0247574A1
Authority
EP
European Patent Office
Prior art keywords
heating device
heating element
heating
glass
radiant
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Withdrawn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
EP87107640A
Other languages
German (de)
English (en)
Inventor
Herwig Dipl.-Ing. Scheidler
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.)
Schott AG
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
Schott Glaswerke AG
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 Carl Zeiss AG, Schott Glaswerke AG filed Critical Carl Zeiss AG
Publication of EP0247574A1 publication Critical patent/EP0247574A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F24C7/06—Arrangement or mounting of electric heating elements

Definitions

  • the present invention relates to a heating device for a microwave appliance.
  • Microwave appliances have become popular world-wide, and their share in the market increases constantly.
  • so-called combination microwave appliances have gained increasing importance wherein, besides the microwave feature, a supplemental infrared heating unit is arranged in the cooking chamber for browning the roasting.
  • a supplemental infrared heating unit is arranged in the cooking chamber for browning the roasting.
  • browned and/or roasted food can be obtained just like in a baking oven, while the roasting process is simultaneously enhanced by the microwave energy.
  • the customarily utilized supplemental infrared heating elements are radiant heating elements having an operating temperature of about 900 to 1000 K.
  • microwave feed-in usually takes place in microwave appliances from above, the zone of the microwave feed-in is simultaneously to be protected from soiling.
  • the invention makes possible to satisfactori­ly roast and grill the food and, in combination, have the radiant heating element protected by the cover against direct soiling.
  • the glass-ceramic cover is made of a high-spo­dumene microcrystal-containing glass ceramic (h-spodumene-­MK-containing glass-ceramic) having low microwave absorption and high infrared transmission.
  • the radiant heating element used can be any desired suitable infrared radiator, for example a resistance wire, halogen lamps, a quartz radiator, or a combination of differently suited radiators.
  • FIG 1 shows an example, in principle, according to claim 6 of the application.
  • the microwave energy is fed into the microwave cooking chamber 1 through the bottom 2.
  • a heating device designed as a module 4 is attached at the overhead wall of the cooking chamber.
  • a resistor 5 of this heating module forms a radiant heating element which radiates on the food to be grilled from above.
  • the walls of the cooking chamber are protected from overheating by means of an insulation molding 3 which also supports the heating resistor 5.
  • the heating resistor is covered by means of a glass-ceramic plate 7.
  • the glass-ceramic is mounted by means of a suitable mounting to the housing 8 of the heating module 4.
  • a temperature protector 6 integrated into the heating module 4 serves for temperature regulation and/or temperature limiting of the heating module 4.
  • FIG. 2 shows another embodiment, in principle, according to claim 7 of this application.
  • the microwave energy is fed into the microwave cooking chamber 1 in the direction 2 from above.
  • a heating device designed as a module 4 with an insulation body 3, a radiant heating element formed by a heating resistor 5, a glass-ceramic cover 7, and a temperature limiter 6 is in this case attached underneath the overhead wall of the cooking chamber. Thereby, the heating module radiates on the food to be grilled from above.
  • a glass-ceramic cover 7 protects, in this arrangement, not only the heating module from soiling, but also serves simultaneously for covering the microwave feed-in into the cooking chamber of the microwave appliance. Yet, on account of the low microwave absorption of the glass- ceramic 7, the microwave energy can enter the cooking chamber 1 with low losses.
  • the glass-ceramic cover can be fashioned as a plate, as illustrated in Figures 1 and 2; however, it is just as readily possible to provide a cover with pressed or blown molded components.
  • the radiant heating element is designed for an operating temperature of at least 1150 K.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Resistance Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
EP87107640A 1986-05-28 1987-05-26 Disposiif de chauffage pour appareil à micro-ondes Withdrawn EP0247574A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863618044 DE3618044A1 (de) 1986-05-28 1986-05-28 Beheizungsvorrichtung fuer kombinierte mikrowellengeraete
DE3618044 1986-05-28

Publications (1)

Publication Number Publication Date
EP0247574A1 true EP0247574A1 (fr) 1987-12-02

Family

ID=6301856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107640A Withdrawn EP0247574A1 (fr) 1986-05-28 1987-05-26 Disposiif de chauffage pour appareil à micro-ondes

Country Status (3)

Country Link
EP (1) EP0247574A1 (fr)
JP (1) JPS62285393A (fr)
DE (1) DE3618044A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0420319A1 (fr) * 1989-09-23 1991-04-03 Bauknecht Hausgeräte GmbH Cuisinière électrique
WO1992017102A1 (fr) * 1991-03-28 1992-10-15 Marcel Jolly Appareil de cuisson avec recipient
FR2682461A1 (fr) * 1991-10-15 1993-04-16 Jolly Marcel Appareil de cuisson constitue d'un recipient et d'un generateur de rayonnements electromagnetiques.
ES2036446A2 (es) * 1991-05-20 1993-05-16 Fagor S Coop Ltda Horno combinado de microondas con grill oculto.
FR2687767A1 (fr) * 1991-10-15 1993-08-27 Jolly Marcel Appareil pour grillade et cuisson.
FR2689214A1 (fr) * 1992-03-26 1993-10-01 Jolly Marcel Appareil pour grillade constitué d'un générateur de rayonnements électromagnétiques et d'un récipient.
EP0695913A1 (fr) * 1994-08-04 1996-02-07 AEG Hausgeräte GmbH Moufle pour four de cuisson
GB2336281A (en) * 1998-02-27 1999-10-13 Sanyo Electric Co Heating element assembly and disposition in a fan assisted cooking device
EP0977468A2 (fr) * 1998-07-29 2000-02-02 Lg Electronics Inc. Dispositif de refroidissement pour four à micro-ondes muni de lampes à halogènes
EP1221828A1 (fr) * 2000-11-30 2002-07-10 Lg Electronics Inc. Dispositif de chauffage pour un four à micro-ondes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921266A1 (de) * 1978-05-31 1979-12-06 Gen Electric Mikrowellen-koch- oder -backgeraet
US4477706A (en) * 1982-07-19 1984-10-16 Control Data Corporation Combination microwave/convection and broiling oven
EP0215617A1 (fr) * 1985-09-18 1987-03-25 THORN EMI Patents Limited Grill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920174A (en) * 1957-06-28 1960-01-05 Raytheon Co Microwave ovens
DE3406604C1 (de) * 1984-02-23 1985-07-25 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Heizeinrichtung fuer Strahlungsheizstellen mit elektrischen Strahlungsheizelementen
DE8437401U1 (de) * 1984-12-21 1985-03-28 Oberkirch, Brigitte, 7000 Stuttgart Schutztuch fuer kehlkopfoperierte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921266A1 (de) * 1978-05-31 1979-12-06 Gen Electric Mikrowellen-koch- oder -backgeraet
US4477706A (en) * 1982-07-19 1984-10-16 Control Data Corporation Combination microwave/convection and broiling oven
EP0215617A1 (fr) * 1985-09-18 1987-03-25 THORN EMI Patents Limited Grill

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, unexamined application, M section, vol. 2, no. 80, June 24, 1978 THE PATENT OFFICE JAPANESE GOVERNMENT page 2126 M 78 & JP-A-53-49 351 (matsuhita) *
PATENTS ABSTRACTS OF JAPAN, unexamined application, M section, vol. 2, no. 87, July 15, 1978 THE PATENT OFFICE JAPANESE GOVERNMENT page 2506 M 78 & JP-A-53-57 542 (matsuhita) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0420319A1 (fr) * 1989-09-23 1991-04-03 Bauknecht Hausgeräte GmbH Cuisinière électrique
WO1992017102A1 (fr) * 1991-03-28 1992-10-15 Marcel Jolly Appareil de cuisson avec recipient
ES2036446A2 (es) * 1991-05-20 1993-05-16 Fagor S Coop Ltda Horno combinado de microondas con grill oculto.
FR2682461A1 (fr) * 1991-10-15 1993-04-16 Jolly Marcel Appareil de cuisson constitue d'un recipient et d'un generateur de rayonnements electromagnetiques.
FR2687767A1 (fr) * 1991-10-15 1993-08-27 Jolly Marcel Appareil pour grillade et cuisson.
FR2689214A1 (fr) * 1992-03-26 1993-10-01 Jolly Marcel Appareil pour grillade constitué d'un générateur de rayonnements électromagnétiques et d'un récipient.
EP0695913A1 (fr) * 1994-08-04 1996-02-07 AEG Hausgeräte GmbH Moufle pour four de cuisson
GB2336281A (en) * 1998-02-27 1999-10-13 Sanyo Electric Co Heating element assembly and disposition in a fan assisted cooking device
EP0977468A2 (fr) * 1998-07-29 2000-02-02 Lg Electronics Inc. Dispositif de refroidissement pour four à micro-ondes muni de lampes à halogènes
EP0977468A3 (fr) * 1998-07-29 2002-05-29 Lg Electronics Inc. Dispositif de refroidissement pour four à micro-ondes muni de lampes à halogènes
EP1221828A1 (fr) * 2000-11-30 2002-07-10 Lg Electronics Inc. Dispositif de chauffage pour un four à micro-ondes
US6541746B2 (en) 2000-11-30 2003-04-01 Lg Electronics Inc. Microwave oven with a convectional heating apparatus

Also Published As

Publication number Publication date
JPS62285393A (ja) 1987-12-11
DE3618044A1 (de) 1987-12-03

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19871204

17Q First examination report despatched

Effective date: 19880907

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHEIDLER, HERWIG, DIPL.-ING.