EP0029532A1 - Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb - Google Patents

Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb Download PDF

Info

Publication number
EP0029532A1
EP0029532A1 EP80106841A EP80106841A EP0029532A1 EP 0029532 A1 EP0029532 A1 EP 0029532A1 EP 80106841 A EP80106841 A EP 80106841A EP 80106841 A EP80106841 A EP 80106841A EP 0029532 A1 EP0029532 A1 EP 0029532A1
Authority
EP
European Patent Office
Prior art keywords
openings
glass ceramic
microwave
ceramic plate
coupling housing
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Withdrawn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
EP80106841A
Other languages
German (de)
English (en)
French (fr)
Inventor
Willi Reiss
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0029532A1 publication Critical patent/EP0029532A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/6402—Aspects relating to the microwave cavity
    • H05B6/6405—Self-cleaning cavity

Definitions

  • the invention relates to a combined cooker for microwave and conventional resistance heating operation, which is equipped with a device for pyrolytic cleaning of the cooking space and a cooling air system and in which a window opening which is tightly covered by a glass ceramic plate is provided in the floor of the cooking space, beneath which a microwave coupling housing with a microwave energy generation and supply device is attached.
  • a stove of this type is known from DE-A-27 15 655.
  • the cooking chamber is operated with resistance heating elements during the baking or roasting process, moist vapors occur to a considerable extent, which penetrate everywhere and subsequently condense and thereby contaminate the relevant parts of the appliance through their precipitation.
  • their operational safety can be considerably impaired.
  • the glass ceramic covering the window opening in the bottom of the cooking space Plate attached with the interposition of a high-temperature-resistant all-round seal. It has now been shown, however, that such a seal takes up fat and the like during normal operation of the cooking space and stores it initially.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of designing a cooker of the type mentioned at the outset in such a way that a condensation precipitation of the grease vapor or the contaminated gas escaping, in particular, from the seal for the bottom-side glass ceramic plate the microwave energy generating device is practically avoided with simple design measures.
  • the advantages achieved by the invention are essentially to be seen in the fact that the fat vapors and other contaminated gases diffusing out of the seal, especially during the heat cleaning process, into one of the Microwave energy generation and supply device are directed opposite flow direction, so that the vapors and gases are kept away from these parts and thus a settling on these parts and an associated contamination is excluded.
  • the operability and thus the service life of the microwave energy generating parts is considerably extended and the maintenance and maintenance costs of such cookers are kept down.
  • the cooking space 1 shown of a cooker or a roasting and baking oven has a conventional electric jacket tube heating element 2 on the top side, guides 3 arranged laterally for baking trays and the like, and on the back a receiving device 4 for a grill or hot air device.
  • the cooking space 1 can be closed by a cooking space door 5.
  • a recessed area is provided in the bottom 6 of the cooking space 1, which is designed as a rectangular window opening with a circumferential flange 7, which is preferably covered towards the cooking space 1 by a glass ceramic plate 8 resting on the flange 7.
  • the glass ceramic plate 8 lying thereon is secured in its recessed position by a circumferential fastening frame 9 which is screwed to the bottom 6 of the cooking space.
  • the mounting frame 9 is supported under Zwi position of a high temperature resistant double seal 10 and 11 on the one hand on the bottom 6 of the cooking space 1 and on the other hand on the glass ceramic plate 8.
  • the glass ceramic plate 8 is in turn placed on the flange 7 with the interposition of a further seal 13.
  • a gap 15 is formed between the glass ceramic plate 8 and the raised edge 14 of the flange 7, so that the glass ceramic plate 8 can expand unhindered when heated.
  • Coupling opening 16 for the microwave energy is a pot-like so-called.
  • Coupling housing 17 is attached to the underside of the flange 7, the dimensions of which are adapted approximately to the window or coupling opening 16 and are expediently encased with an insulating body 18.
  • a magnetron 19 is provided in order to be able to introduce microwave energy into the cooking space 1.
  • the microwaves (energy waves) are emitted into a waveguide 21 via an associated antenna 20 and from there reach the interior of the coupling housing 17 and then through the coupling opening 16 covered with the glass ceramic plate 8 into the cooking space 1.
  • the seals 10, 11, 13 absorb grease and other impure substances during operation of the cooking space 1, which then evaporate (diffuse out) from the seals, in particular during the pyrolytic heat cleaning process, and then evaporate as gases in all directions.
  • the vapors or gases also get into the waveguide 21 and from there unhindered to the antenna 20 of the magnetron 19, as shown in FIG. 2 by an arrow 31.
  • the vapors or gases then precipitate on the antenna 20, as a result of which this is covered with a layer of dirt over time. The consequence of this is premature failure of the microwave energy generating device.
  • an air guide line 23 upstream of the air guide openings 22 in the waveguide 21 in order to be able to introduce or press the air into the coupling housing 17 in a targeted manner.
  • This air guide line 23 can expediently be connected directly to the cooling air system of the cooker.
  • annular air outlet openings 24 are provided for discharging the air flow guided through the waveguide 21 and the coupling housing 17.
  • the air outlet openings 24 are in turn connected to an annular channel 30 provided in the insulating body 18 for the pot-like housing 17, which is connected to one or more vertical shafts 25 which then each end with an opening 26 on the bottom side.
  • the air outlet openings 24 are located directly in the next area below the seal 13, the vapors and gases diffusing out of the seal are immediately enveloped by the throughput air flow emerging from the coupling housing 17 and entrained to the air outlet openings 24, so that these vapors and Gases in the waveguide 21 is excluded with the greatest security.
  • the shaft 25 leading downwards the vapors, gases, Air led out through the shaft opening 26.
  • the air throughput through the shaft 25 can be determined by appropriate dimensioning of the shaft opening 26.
  • openings 27 which connect gap 15 between glass ceramic plate 8 and raised edge 14 of flange 7 and shaft 25 are arranged in peripheral flange 7 for glass ceramic plate 8.
  • FIG. 5 shows an exemplary embodiment in which the gap 15 between the glass ceramic plate 8 and the raised edge 14 of the flange 7 via openings 28 on the one hand with the shaft 25 and on the other hand via further openings 29 in the flange 7 with an adjoining channel 30 with the outlet openings 24 is connected in the side wall 17 'of the coupling housing 17 of the coupling opening 16.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Electronic Switches (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP80106841A 1979-11-20 1980-11-06 Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb Withdrawn EP0029532A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792946766 DE2946766A1 (de) 1979-11-20 1979-11-20 Kombinierter herd fuer mikrowellen- und konventionellen widerstands-heizbetrieb
DE2946766 1979-11-20

Publications (1)

Publication Number Publication Date
EP0029532A1 true EP0029532A1 (de) 1981-06-03

Family

ID=6086451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106841A Withdrawn EP0029532A1 (de) 1979-11-20 1980-11-06 Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb

Country Status (5)

Country Link
US (1) US4320275A (da)
EP (1) EP0029532A1 (da)
DE (1) DE2946766A1 (da)
DK (1) DK469280A (da)
NO (1) NO146827C (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208254B1 (en) * 2007-10-30 2016-05-11 TurboChef Technologies, Inc. Antenna cover for microwave ovens

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147044A1 (de) * 1981-11-27 1983-06-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Kombinierter herd fuer mikrowellen- und elektrischen heizwiderstands-betrieb
DE3818490A1 (de) * 1988-05-31 1989-12-07 Bosch Siemens Hausgeraete Mikrowellen-haushaltgeraet
DE102005050528B4 (de) * 2005-10-21 2007-07-26 Deutsches Zentrum für Luft- und Raumfahrt e.V. Mikrowellenautoklav
US8173942B2 (en) * 2005-10-31 2012-05-08 General Electric Company Self-cleaning over the range oven
US20220214047A1 (en) * 2021-01-06 2022-07-07 Bsh Home Appliances Corporation Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1565588A1 (de) * 1965-12-28 1972-02-24 Huskvarna Vapenfabriks Ab Vorrichtung zur dielektrischen Waermebehandlung
DE2715655A1 (de) * 1976-07-06 1978-01-12 Litton Industries Inc Mikrowellenenergiezufuehrung fuer kombinierte kochherde
US4091252A (en) * 1975-06-09 1978-05-23 Tokyo Shibaura Electric Co., Ltd. Microwave heating apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276138A (en) * 1962-09-21 1966-10-04 Miwag Mikrowellen Ag Microwave drying apparatus
US3364331A (en) * 1965-02-17 1968-01-16 Westinghouse Electric Corp Energy distribution system
US3440385A (en) * 1965-10-13 1969-04-22 Microtherm Ltd Electronic ovens
DE1936324B2 (de) * 1969-07-17 1972-01-13 Burger Eisenwerke Ag, 6349 Burg Mehrflutiges Geblase fur ein Gerat um Auftauen, Braten oder Backen von Lebensmitteln
US4096369A (en) * 1975-11-20 1978-06-20 Matsushita Electric Industrial Co., Ltd. Microwave oven

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1565588A1 (de) * 1965-12-28 1972-02-24 Huskvarna Vapenfabriks Ab Vorrichtung zur dielektrischen Waermebehandlung
US4091252A (en) * 1975-06-09 1978-05-23 Tokyo Shibaura Electric Co., Ltd. Microwave heating apparatus
DE2715655A1 (de) * 1976-07-06 1978-01-12 Litton Industries Inc Mikrowellenenergiezufuehrung fuer kombinierte kochherde

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208254B1 (en) * 2007-10-30 2016-05-11 TurboChef Technologies, Inc. Antenna cover for microwave ovens

Also Published As

Publication number Publication date
US4320275A (en) 1982-03-16
DK469280A (da) 1981-05-21
NO146827B (no) 1982-09-06
NO146827C (no) 1982-12-15
NO803488L (no) 1981-05-21
DE2946766A1 (de) 1981-06-11

Similar Documents

Publication Publication Date Title
DE1679199C3 (de) Verfahren zum Betrieb eines selbstreinigenden Gasherdes und Gasherd zur Durchführung des Verfahrens
DE19505469C1 (de) Anordnung für die Zuführung von Primärluft zu einem atmosphärischen Gasbrenner über einer Kochplatte aus Glaskeramik
DE1579665C3 (de) Haushaltsherd mit Hitzereinigung des Back- bzw. Bratraums
DE3516847C3 (de) Elektroherd mit Katalysator
EP0900985B1 (de) Verfahren zum Kühlen einer Garofentür und Garofen mit Kühleinrichtung
DE2705395B2 (de) Herd
EP2747515A1 (de) Gargerät
DE19705697A1 (de) Haushaltsherd mit einer auf Glas abgedichteten Muffel
DE3931482C2 (da)
EP0029532A1 (de) Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb
EP0029179A1 (de) Kombinierter Herd für Mikrowellen- und konventionellen Widerstands-Heizbetrieb
DE19738601C1 (de) Verfahren zum Kühlen der Außenumgebung einer Ofenmuffel
DE69501965T2 (de) Haushaltskochofen
EP0731318B1 (de) Backofen
EP0671591A1 (de) Vorrichtung zum Abführen von Wrasen aus einem Backofen
CH661829A5 (de) Hochfrequenzheizgeraet.
DE4407084A1 (de) Backofen
EP0633433B1 (de) Einbauherd
DE2831804C3 (de) Mikrowellenherd
DE3119596A1 (de) Kombinierter herd fuer mikrowellen- und konventionellen widerstands-heizbetrieb
DE3224369C2 (da)
DE19738602A1 (de) Verfahren zum Abführen von Garkondensat aus einer Ofenmuffel und Garofen mit Mitteln zum Abführen von Garkondensat
EP2444738B1 (de) Gargerät mit einem Backofen
DE19809761A1 (de) Gargerät mit pyrolytischer Selbstreinigung
DE3715598A1 (de) Herd mit pyrolytischer selbstreinigung des bratraumes

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810706

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: 19830309

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REISS, WILLI