EP0002034B1 - Electrically heated cooking oven with top and bottom heating and with an integrated microwave provision - Google Patents

Electrically heated cooking oven with top and bottom heating and with an integrated microwave provision Download PDF

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Publication number
EP0002034B1
EP0002034B1 EP19780101336 EP78101336A EP0002034B1 EP 0002034 B1 EP0002034 B1 EP 0002034B1 EP 19780101336 EP19780101336 EP 19780101336 EP 78101336 A EP78101336 A EP 78101336A EP 0002034 B1 EP0002034 B1 EP 0002034B1
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EP
European Patent Office
Prior art keywords
heating
roasting
roasting oven
electrically heated
provision
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.)
Expired
Application number
EP19780101336
Other languages
German (de)
French (fr)
Other versions
EP0002034A1 (en
Inventor
Ulrich Schmidt
Peter Klapper
Gerhard Lehmann
Heinrich Keppel
Richard Tureck
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.)
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Publication date
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Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0002034A1 publication Critical patent/EP0002034A1/en
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    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0263—Ovens
    • 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
    • F24C7/02—Stoves or ranges heated by electric energy using microwaves
    • 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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
    • 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

Definitions

  • the invention relates to an electrically heated roasting oven with bottom and top heating and with an integrated microwave device.
  • a roasting oven of this type is known from DE-OS 26 05 699.
  • the preparation or cooking of the food can take place in this roasting oven in a conventional manner by switching on the bottom and / or top heating of the roasting oven.
  • the bottom and / or top heating is additionally switched on to support it, in order to give the exterior of the item to be cooked a certain degree of browning and thus an improvement in taste.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of developing an electrically heated roasting oven of the type mentioned in such a way that the quality of the food to be cooked is improved and the cooking time is shortened.
  • the roasting oven housing 1 for a cooker (not shown further) has a known microwave device or heating 2 on its underside 1 'and a heating rod 3 arranged above it, which serves as an underheater.
  • the inner top side 1 "of the roasting oven housing 1 is a heating rod 4 and a further heating rod 5, which is used as additional heating, is provided between the latter.
  • a radiant panel 6 is arranged, which radiates the radiant heat of the heating rods 4 and 5 downwards onto the Roasted food guides.
  • the upper heat heating rod 4 and the lower heat heating rod 3 are connected in parallel and are controlled by an adjustable temperature controller 7 located in series with them.
  • the adjustable temperature controller 7 responds to the respectively set or preselected temperature for the roasting space of the roasting oven 1 and keeps the roasting space at this temperature.
  • the control range of this temperature controller 7 is in the range of about 50 ° to 300 ° C.
  • the top heat rod 4 and the bottom heat rod 3 can be switched on via a contact 8 which can be actuated by a switch toggle.
  • the additional heating rod 5 Parallel to the upper heat heating rod 4 and lower heat heating rod 3 is the additional heating rod 5, which is switched by a temperature switch 9 which is set to a temperature in the roasting chamber of approximately 250 ° C.
  • the additional heating element 5 is switched on via a switching element 10, which can be a conventional relay or an electronic or mechanical timer.
  • the temperature in the roasting space rises only very slowly to 250 ° C. when only the upper heat heating element 4 and the lower heat heating element 3 are switched on.
  • the additional heater 5 is switched on, however, as the characteristic curve II shows, the desired temperature of 250 ° C. is set in the roasting chamber in a considerably shorter period of time, which is particularly the case with such a roasting oven when using the time-saving microwave device or heating when roasting or the like is advantageous.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)
  • Electric Ovens (AREA)
  • Baking, Grill, Roasting (AREA)

Description

Die Erfindung betrifft einen elektrisch beheizten Bratofen mit Unter- und Oberbeheizung und mit integrierter Mikrowelleneinrichtung.The invention relates to an electrically heated roasting oven with bottom and top heating and with an integrated microwave device.

Ein Bratofen dieser Art ist aus der DE-OS 26 05 699 bekannt. Die Zubereitung bzw. Garung des Gutes kann bei diesem Bratofen auf herkömmliche Weise unter Einschaltung der Unter- und/oder Oberbeheizung des Bratofens erfolgen. Bei Benutzung der Mikrowelleneinrichtung zum Garen wird zu deren Unterstützung noch zusätzlich die Unter- und/oder Oberbeheizung zugeschaltet, um dem Äußeren des Gargutes eine gewisse Bräunung und somit Geschmacksverbesserung zu geben.A roasting oven of this type is known from DE-OS 26 05 699. The preparation or cooking of the food can take place in this roasting oven in a conventional manner by switching on the bottom and / or top heating of the roasting oven. When using the microwave device for cooking, the bottom and / or top heating is additionally switched on to support it, in order to give the exterior of the item to be cooked a certain degree of browning and thus an improvement in taste.

Es hat sich nun aber in der Praxis gezeigt, daß bei gleichzeitigem Einsatz der Unter- und Oberbeheizung im Bratofen und der Mikrowelleneinrichtung infolge der verhältnismäßig langen An- bzw. Aufheizzeit des Bratofens trotzdem keine befriedigenden Bratergebnisse erzielbar sind.However, it has now been shown in practice that if the bottom and top heating in the roasting oven and the microwave device are used at the same time, satisfactory roasting results can still not be achieved due to the relatively long heating or heating time of the roasting oven.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, einen elektrisch beheizten Bratofen der eingangs genannten Art so weiterzubilden, daß die Qualität des Gargutes verbessert und die Garzeit verkürzt wird.The invention seeks to remedy this. The invention, as characterized in the claims, solves the problem of developing an electrically heated roasting oven of the type mentioned in such a way that the quality of the food to be cooked is improved and the cooking time is shortened.

Die mit der Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, daß bei jedem Einschaltvorgang zunächst eine große Aufheizleistung für den Bratofen zur Verfügung steht, durch die der Bratofen bzw. der Bratraum in einer relativ kurzen Zeitspanne auf etwa 250°C aufgeheizt und nach Erreichen der genannten Temperatur automatisch auf eine kleinere Heizleistung bestehend aus der Unter-und Oberbeheizung zurückgeschaltet wird. Daraus ergibt sich nicht nur der Vorteil einer verkürzten Garzeit insgesamt, sondern das Gargut und zwar insbesondere das Bratgut wird auch bei Einsatz der zeitsparenden Mikrowelleneinrichtung gut durchgebraten, so daß sich die den Geschmack eines Bratens bewirkenden Geschmacks- bzw. Aromastoffe auch voll entwickeln bzw. bilden können.The advantages achieved with the invention are essentially to be seen in the fact that, with each switch-on, a large heating power is initially available for the roasting oven, by means of which the roasting oven or the roasting space is heated to about 250 ° C. in a relatively short period of time and after it has been reached the temperature mentioned is automatically switched back to a lower heating output consisting of the lower and upper heating. This not only results in the advantage of a shortened cooking time overall, but the food to be cooked, and in particular the food to be fried, is also well fried when the time-saving microwave device is used, so that the flavoring or flavoring substances which cause the taste of a roast also develop fully can.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird an Hand dieser nachfolgend näher beschrieben. Es zeigt

  • Figur 1 einen mit einer Mikrowelleneinrichtung bzw. -beheizung versehenen Bratofen eines Herdes,
  • Figur 2 ein Schaltbild für die Steuerung der Beheizung dieses Bratofens und
  • Figur 3 ein Diagramm, welches den Temperaturanstieg im Bratraum pro Zeit mit und ohne Zusatzheizung darstellt.
An embodiment of the invention is shown in the drawing and will be described in more detail below with reference to this. It shows
  • FIG. 1 shows a roasting oven of a cooker provided with a microwave device or heating,
  • Figure 2 is a circuit diagram for controlling the heating of this oven and
  • Figure 3 is a diagram showing the temperature rise in the roasting chamber per time with and without additional heating.

Das Bratofengehäuse 1 für einen nicht weiter dargestellten Herd besitzt an seiner Unterseite 1' eine bekannte Mikrowelleneinrichtung bzw. -beheizung 2 und einen darüber angeordneten, als Unterheizung dienenden Heizstab 3. Der inneren Oberseite 1" des Bratofengehäuses 1 ist ein als Oberbeheizung dienender Heizstab 4 und zwischen diesem ein weiterer Heizstab 5, der als Zusatzheizung verwendet wird, vorgesehen. Zwischen den oberen Heizstäben 4 und 5 und der inneren Oberseite 1" des Bratofengehäuses 1 ist ein Strahlblech 6 angeordnet, welches die Strahlungswärme der Heizstäbe 4 und 5 nach unten zu auf das Bratgut lenkt.The roasting oven housing 1 for a cooker (not shown further) has a known microwave device or heating 2 on its underside 1 'and a heating rod 3 arranged above it, which serves as an underheater. The inner top side 1 "of the roasting oven housing 1 is a heating rod 4 and a further heating rod 5, which is used as additional heating, is provided between the latter. Between the upper heating rods 4 and 5 and the inner top side 1 ″ of the roasting oven housing 1, a radiant panel 6 is arranged, which radiates the radiant heat of the heating rods 4 and 5 downwards onto the Roasted food guides.

Wie das Schaltbild nach Figur 2 zeigt, sind der Oberhitze-Heizstab 4 und der Unterhitze-Heizstab 3 parallel geschaltet und werden von einem in Reihe dazu liegenden verstellbaren Temperaturregler 7 gesteuert. Der verstellbare Temperaturregler 7 spricht auf die jeweils eingestellte bzw. vorgewählte Temperatur für den Bratraum des Bratofens 1 an und hält den Bratraum auf dieser Temperatur. Der Regelbereich dieses Temperaturreglers 7 liegt dabei im Bereich von etwa 50° bis 300°C. Über einen von einem Schaltknebel betätigbaren Kontakt 8 können der Oberhitze-Heizstab 4 und der Unterhitze-Heizstab 3 eingeschaltet werden.As the circuit diagram according to FIG. 2 shows, the upper heat heating rod 4 and the lower heat heating rod 3 are connected in parallel and are controlled by an adjustable temperature controller 7 located in series with them. The adjustable temperature controller 7 responds to the respectively set or preselected temperature for the roasting space of the roasting oven 1 and keeps the roasting space at this temperature. The control range of this temperature controller 7 is in the range of about 50 ° to 300 ° C. The top heat rod 4 and the bottom heat rod 3 can be switched on via a contact 8 which can be actuated by a switch toggle.

Parallel zu dem Oberhitze-Heizstab 4 und Unterhitze-Heizstab 3 ist der Zusatz-Heizstab 5 gelegt, der von einem auf eine Temperatur im Bratraum von etwa 250°C fest eingestellten Temperaturschalter 9 geschaltet wird. Eingeschaltet wird der Zusatz-Heizstab 5 über ein Schaltglied 10, welches ein übliches Relais oder ein elektronisches oder mechanisches Zeitglied sein kann.Parallel to the upper heat heating rod 4 and lower heat heating rod 3 is the additional heating rod 5, which is switched by a temperature switch 9 which is set to a temperature in the roasting chamber of approximately 250 ° C. The additional heating element 5 is switched on via a switching element 10, which can be a conventional relay or an electronic or mechanical timer.

Wie die Kennlinie im Diagramm in Figur 3 zeigt, steigt die Temperatur im Bratraum, wenn nur der Oberhitze-Heizstab 4 und der Unterhitze-Heizstab 3 eingeschaltet sind, nur sehr langsam auf 250°C an. Bei Zuschaltung des Zusatzheizkörpers 5 stellt sich jedoch, wie die Kennlinie II zeigt, im Bratraum in einem wesentlich kürzeren Zeitraum die gewünschte Temperatur von 250°C ein, was bei einem solchen Bratofen insbesondere bei Verwendung der zeitsparenden Mikrowelleneinrichtung bzw. -beheizung beim Garen von Braten oder dgl. von Vorteil ist.As the characteristic curve in the diagram in FIG. 3 shows, the temperature in the roasting space rises only very slowly to 250 ° C. when only the upper heat heating element 4 and the lower heat heating element 3 are switched on. When the additional heater 5 is switched on, however, as the characteristic curve II shows, the desired temperature of 250 ° C. is set in the roasting chamber in a considerably shorter period of time, which is particularly the case with such a roasting oven when using the time-saving microwave device or heating when roasting or the like is advantageous.

Claims (3)

1. Electrically heated roasting oven with lower and upper heating and with integrated microwave equipment, characterised thereby, that arranged in the roasting oven (1) is an additional heater element (5), which is controllable independently of the lower and upper heating (3 or 4), is capable of being switched on with the switching-on of the roasting oven heating consisting of lower and upper heating (3, 4) and/or switching-on of the microwave equipment (2) and which after attainment of a certain temperature in the roasting space of the roasting oven (1) is capable of being switched off through a fixedly set temperature switch (9).
2. Roasting oven according to claim 1, characterised thereby, that the switching-on of the additional heater element (5) takes place through a relay or similar switching means.
3. Roasting oven according to claim 1, characterised thereby, that the control of the additional heater element (5) takes place through an electrical or mechanical timing member.
EP19780101336 1977-11-18 1978-11-09 Electrically heated cooking oven with top and bottom heating and with an integrated microwave provision Expired EP0002034B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2751483 1977-11-18
DE19772751483 DE2751483C2 (en) 1977-11-18 1977-11-18 Electrically heated roasting oven with top and bottom heating and with integrated microwave heating device

Publications (2)

Publication Number Publication Date
EP0002034A1 EP0002034A1 (en) 1979-05-30
EP0002034B1 true EP0002034B1 (en) 1980-10-29

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ID=6023998

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Application Number Title Priority Date Filing Date
EP19780101336 Expired EP0002034B1 (en) 1977-11-18 1978-11-09 Electrically heated cooking oven with top and bottom heating and with an integrated microwave provision

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EP (1) EP0002034B1 (en)
DE (1) DE2751483C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396817A (en) * 1980-03-31 1983-08-02 Litton Systems, Inc. Method of browning food in a microwave oven
GB8815381D0 (en) * 1988-06-28 1988-08-03 New World Domestic Appliances Cooking ovens
KR950019405A (en) * 1993-12-04 1995-07-24 이헌조 Microwave Oven Cavity Protection Device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664207A (en) * 1948-07-20 1952-01-02 British Thomson Houston Co Ltd Improvements in and relating to ultra-high frequency electric heating apparatus
US2597825A (en) * 1948-07-20 1952-05-20 Hotpoint Inc Combination electric and ultrahighfrequency heating apparatus
US2744990A (en) * 1951-01-24 1956-05-08 Gen Electric Ultrahigh frequency heating apparatus
DE1093502B (en) * 1959-05-05 1960-11-24 Siemens Elektrogeraete Gmbh Cooking compartment of an electric cooker
DE1282897C2 (en) * 1960-05-09 1976-07-22 Ausscheidung in: 13 03 940 General Electric Company, New York, N.Y. (V.St.A.) METHOD FOR INDEPENDENT CLEANING OF THE INTERNAL SURFACES OF OVENS AND OVENS OF COOKING EQUIPMENT, IN PARTICULAR ELECTRIC STOVES
DE1565816B2 (en) * 1966-06-28 1971-12-09 Siemens Electrogerate GmbH, 1000 Ber linu 8000 München CONTROL DEVICE FOR COOKING, FRYING AND BAKING
DE2221874C3 (en) * 1972-05-04 1974-12-12 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Arrangement for regulating the output of electric hotplates
DE2257647A1 (en) * 1972-11-24 1974-05-30 Licentia Gmbh TEMPERATURE CONTROL DEVICE FOR AN AUTOMATICALLY CONTROLLED ELECTRIC COOKING PLATE WITH PRE-COOKING AND CONTINUOUS COOKING AREA
DE2455579B2 (en) * 1974-11-23 1978-03-30 G. Bauknecht Gmbh, Elektrotechnische Fabriken, 7000 Stuttgart Method and arrangement for operating an electrically heated household oven
NO770418L (en) * 1976-02-13 1977-08-16 Witte & Co Stephan MICROWAVE STOVE.
DE2605699A1 (en) * 1976-02-13 1977-08-25 Witte & Co Stephan Microwave oven for domestic use - has high temp. heater in side walls for pyrolytic self cleaning action
DE7606217U1 (en) * 1976-03-02 1976-09-02 G. Bauknecht Gmbh, Elektrotechnische Fabriken, 7000 Stuttgart GRILL RADIATOR

Also Published As

Publication number Publication date
EP0002034A1 (en) 1979-05-30
DE2751483A1 (en) 1979-05-23
DE2751483C2 (en) 1983-03-03

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