EP0213442A1 - Arrangement for controlling ovens employing micro-waves and/or heat energy - Google Patents

Arrangement for controlling ovens employing micro-waves and/or heat energy Download PDF

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Publication number
EP0213442A1
EP0213442A1 EP86110857A EP86110857A EP0213442A1 EP 0213442 A1 EP0213442 A1 EP 0213442A1 EP 86110857 A EP86110857 A EP 86110857A EP 86110857 A EP86110857 A EP 86110857A EP 0213442 A1 EP0213442 A1 EP 0213442A1
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EP
European Patent Office
Prior art keywords
microwave
time
heating
control device
program control
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EP86110857A
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German (de)
French (fr)
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EP0213442B1 (en
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Helmut Dipl.-Ing. Waigand
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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
    • 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
    • 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

Definitions

  • the present invention relates to an arrangement for controlling cookers for heating and cooking food and liquids with microwave energy and / or thermal energy by means of resistance heating using a time and / or program control device by means of which the microwave energy can be adjusted with respect to heating power by clocking and with regard to heating duration is.
  • microwave ovens it is also known for microwave ovens to provide control measures which control the heating power by clocking the microwave power within a limited period of time that can be preset immediately after a start command has been entered.
  • control measures which control the heating power by clocking the microwave power within a limited period of time that can be preset immediately after a start command has been entered.
  • the maximum time allowed for a microwave cooking process is fixed in any case and cannot be exceeded.
  • microwave-only operation and pure heating operation can be time-controlled in the manner described using the resistance heating elements.
  • An arrangement which meets these requirements is characterized according to the invention in that switching measures of the time and / or program control Unit are assigned that the resistance heating according to set temperature and / or energy values for the duration of the microwave operation are supplied to the food.
  • the arrangement according to the invention is characterized in that a selector switch is assigned to the time and / or program control device, via which this program control device can alternatively be set to the time-controlled operating modes "microwave", “time-controlled resistance heating” and “microwave resistance heating combination ". If this selector switch takes the "microwave” position, the resistance heating can be switched on and off manually, regardless of whether microwave operation is taking place or not. This microwave mode is set via input elements of the time and / or program control device.
  • the operating mode selector switch 1 is used to enter the operating modes, in each case one switching position is provided for the operating modes "time-controlled resistance heating", "microwave” and "time-controlled microwave-resistance heating combination”.
  • the microwave operation can be preset and started by entering microwave power values via the corresponding buttons 2 of the control unit and time values assigned to this control unit via a rotary switch 3, which are shown on the display 4, and after that - prompted the indicator light 5 in the start button 6 is actuated by the flashing.
  • Microwave operation must be ended prematurely by pressing a stop button 7.
  • a temperature selector switch 8 is used to set the operating values, which, in addition to the position for the oven lighting, can be set to temperature values between 50 ° C. and 250 ° C. and for a grill operation.
  • the resistance heating is to be carried out in a time-controlled manner, a setting is to be made in the same way via the temperature selector switch 8, but the selector switch 1 for the operating modes is to be set to the "time-controlled resistance heating" position. It is now indicated by flashing that an assigned key 2 is to be pressed and the time must be entered via the rotary switch 3. Then the time-controlled resistance heating is started by pressing the start button 6.
  • the setting values can be entered as in the case of pure microwave mode and pure resistance heating mode, the setting times for microwave mode being automatically adopted for resistance heating mode.
  • the cooking process is also started using the start button 6.
  • the different operating modes which can be carried out with the aid of the cooker equipped according to the invention, are realized as binary values by the positions of the switches F1, F2, F3, which can be set by cams of the selector switch 1, which the function control device ZSt be forwarded.
  • the illustration shows that when the operating mode with thermal heating is used, the switches F1 and F3 are kept open when the operating mode with microwave heating is used. If both types of heating are used in a superimposed manner, all three switches F1, F2, F3 are consequently kept open.
  • Fig. 4 shows that the switch F1 is connected to the heating circuit for the heating resistors R1, R2, R3.
  • the switches F2 and F3 are used to enter information for the control device ZSt.
  • the heating resistor R1 serves as a grill heater and as a heater for the top heat, while the heating resistors R2 and R3 are assigned to the bottom heat in the oven.
  • the temperature controller TR in the power circuit is set to the operating value by the temperature selection switch 8 (FIG. 1). Further cams are arranged on the shaft of the temperature selector switch, via which the switches T1, T2, T3, T4 can be switched. The switches T1 and T2 are closed when the temperature selection switch 8 is rotated in the area in which the heating is to take place.
  • the switch T2 In the temperature range up to 250 ° C, the switch T2 remains closed and the switch T3 is open, so that the heating resistors R2 and R3 are available to provide the bottom heat and the heating resistor R1 - due to the series connection with the heating resistor R3 - supplies the top heat. If the temperature selection switch 8 is turned to the grill position, the switch T2 opens and the switch T3 closes. This means that the heating resistors R2 and R3 are deactivated and the heating resistor R1 is now at the full supply voltage in the function as a grill radiator. The control range of the temperature controller TR is also exhausted, so that the assigned switch remains closed. Depending on the rotary setting of the temperature selector switch 8 in the grill area, an energy acts Regulator ER for clocking the heating current for the heating resistor R1 to reduce power.
  • the operating mode selector switch 1 is set counterclockwise to the "thermal heating" operating mode.
  • the switch contacts F1, F2, F3 are actuated by cams arranged on the shaft of the operating mode selector switch 1 in such a way that the switch contact F1 and the switch contact F3 open and the switch contact F2 closes.
  • the power supply to the heating elements via the switch contact F1 is thus interrupted.
  • a relay R11, which closes the relay switch Sr1, is excited via the time / program control device ZSt during the predetermined time period, so that the heating current is conducted via this relay switch Sr1.
  • relays R12, R13, R14 which can be influenced by the time / program control device ZSt are used via the assigned relay switches Sr2, Sr3, Sr4 to control the microwave generator with the magnetron Mg.
  • This microwave generator can generally only be operated via the time / program control device ZSt.
  • the contacts e1, e2, e3 serve to secure the door during microwave operation.
  • Fig. 4 shows the time / program control device ZSt in connection with the input elements.
  • the central unit of this time / program control device is a microprocessor ⁇ P (eg KS5 100 from Tristar), whose inputs K1, K2, K3, K4 both through the switch contacts L3 of the keys 2 (according to FIG. 1) and through switch contacts F2, F3 e1, S6, S7 are multiplexed via the outputs R1, R0 and R3.
  • the relays R11, R12, R13, R14, of which only the relay R11 is shown in the figure, are controlled via the outputs R8 to R10.
  • the relay R11 is - as can be seen in particular from FIG.
  • the relay R14 is energized during the predetermined period in microwave operation and keeps the associated relay switch Sr4 closed. Via the relays R12 and R13 and the assigned relay switches Sr2 and Sr3 the microwave device is powered.
  • the display arrangement (for example 4-LT-13 from Futaba), which is controlled in a known manner by the outputs R0 to R6 and 00 to 07 of the microprocessor uP, is arranged to display time and operating data as well as operating states.
  • switches S6 and S7 are assigned to start button 6 and stop button 7, respectively.
  • the necessary device for the power supply is not shown and described, since it is not essential to the invention and can be constructed in a generally known manner.
  • the clock pulse T is generated in a known manner from the operating alternating current.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

The arrangement for controlling ovens employing microwaves and/or heat energy contains a switching device associated with the timing and/or program control device such that the heat energy supplied by resistance heating corresponding to the temperature setting and/or energy values is effective for the duration of microwave operation. <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf eine Anordnung zum Ansteuern von Herden zum Erhitzen und Garen von Speisen und Flüssigkeiten mit Mikrowellen­energie und/oder Wärmeenergie durch Widerstandsheizung unter Verwendung einer Zeit- und/oder Programmsteuereinrichtung, durch welche die Mikrowellenenergie bezüglich Heizliestung durch Taktung und bezüglich Heizdauer einstellbar ist.The present invention relates to an arrangement for controlling cookers for heating and cooking food and liquids with microwave energy and / or thermal energy by means of resistance heating using a time and / or program control device by means of which the microwave energy can be adjusted with respect to heating power by clocking and with regard to heating duration is.

Es ist bei Herden bekannt, Schaltmaßnahmen vorzusehen, durch welche Garungs­prozesse zeitgesteuert ablaufen. Dabei werden die Heizwerte bzw. die Tempera­turwerte für den Garungsprozess über Einstellmittel voreingestellt, die Dauer und das Ende und somit auch der Anfang des Garungsprozesses wird über eine Zeitablaufsteuerung, welche üblicherweise für einen Zeitraum bis zu 24 Stunden voreinstellbar ist, gesteuert. Diese Steuerungsmaßnahmen sind also dazu geeig­net, den Garungsprozess zeitlich begrenzt auch während der Abwesenheit von Be­dienungspersonen ablaufen zu lassen.It is known for stoves to provide switching measures by means of which cooking processes run in a time-controlled manner. The heating values or the temperature values for the cooking process are preset using setting means, the duration and the end and thus also the beginning of the cooking process is controlled via a time control, which can usually be preset for a period of up to 24 hours. These control measures are therefore suitable for allowing the cooking process to run for a limited time even when operators are absent.

Daneben ist es auch bei Mikrowellenherden bekannt, Steuermaßnahmen vorzusehen, welche die Heizleistung durch Taktung der Mikrowellenleistung innerhalb be­grenzt voreinstellbarer Zeiten unmittelbar nach Eingabe eines Startbefehls steuern. In diesem Zusammenhang ist es möglich, mehrere unterschiedliche Mi­krowellenleistungen in unmittelbarer zeitlicher Folge dem Gargut zuzuführen. Die maximal für einen Mikrowellen-Garungsprozess erlaubte Zeit ist in jedem Fall festgelegt und kann nicht überschritten werden.In addition, it is also known for microwave ovens to provide control measures which control the heating power by clocking the microwave power within a limited period of time that can be preset immediately after a start command has been entered. In this context, it is possible to supply several different microwave powers to the food in immediate succession. The maximum time allowed for a microwave cooking process is fixed in any case and cannot be exceeded.

Bei bekannten Herden, welche sowohl Wärmeenergie durch Widerstandsheizung als auch Mikrowellenenergie zur Beaufschlagung des Gargutes zur Verfügung stellen können, kann üblicherweise der reine Mikrowellenbetrieb und der reine Heizbe­trieb über die Widerstandsheizelemente in der beschriebenen Art zeitgesteuert erfolgen. Es ist aber auch möglich, den Mikrowellenbetrieb in der beschriebe­nen Art durchzuführen und gleichzeitig von Hand die Wärmeenergiezufuhr durch die Widerstandsheizung zu steuern.In known cookers, which can provide both thermal energy by means of resistance heating and microwave energy to act on the food to be cooked, usually microwave-only operation and pure heating operation can be time-controlled in the manner described using the resistance heating elements. However, it is also possible to carry out the microwave operation in the manner described and at the same time to manually control the supply of thermal energy through the resistance heater.

Aufbauend auf diesem Stande der Technik ist es Aufgabe der Erfindung, eine An­ordnung zum Ansteuern von Herden zum Erhitzen und Garen von Speisen und Flüs­sigkeiten mit Mikrowellenenergie und Wärmeenergie durch Widerstandsheizung mit erweiterten Einsatzmöglichkeiten bereitzustellen.Building on this prior art, it is the object of the invention to provide an arrangement for actuating cookers for heating and cooking food and liquids with microwave energy and thermal energy by means of resistance heating with extended possible uses.

Eine Anordnung, welche diesen Anforderungen genügt, ist erfindungsgemäß da­durch gekennzeichnet, daß Schaltmaßnahmen der Zeit- und/oder Programmsteuer­ einheit zugeordnet sind, daß die Widerstandsheizung entsprechend eingestellter Temperatur- und/oder Energiewerte für die Dauer des Mikrowellenbetriebes dem Gargut zugeführt werden.An arrangement which meets these requirements is characterized according to the invention in that switching measures of the time and / or program control Unit are assigned that the resistance heating according to set temperature and / or energy values for the duration of the microwave operation are supplied to the food.

Mit Hilfe der erfindungsgemäß ausgestatteten Anordnung ist es somit möglich, auch einen Erhitzungs- und Garungsprozess durchzuführen, bei welchem sowohl die zugeführte Mikrowellenenergie als auch die zugeführte Wärmeenergie durch die Widerstandsheizung gleichzeitig zeitlich begrenzt durch die Zeitsteuerung einsetzbar ist. Diese Funktionsweise bietet für den Benutzer eine Bedienungs­vereinfachung für geeignete Anwendungsfälle. Die über die Widerstandsheizung zugeführte Wärmeenergie ist durch übliche Eingabeorgane voreinstellbar.With the aid of the arrangement equipped according to the invention, it is thus also possible to carry out a heating and cooking process in which both the microwave energy supplied and the heat energy supplied by the resistance heating can be used for a limited time by the time control. This functionality offers the user a simplification of operation for suitable applications. The thermal energy supplied via the resistance heater can be preset using conventional input devices.

Gemäß einer bevorzugten Ausführungsform ist die erfindungsgemäße Anordnung da­durch gekennzeichnet, daß ein Wahlschalter der Zeit- und/oder Programmsteuer­einrichtung zugeordnet ist, über welchen diese Programmsteuereinrichtung al­ternativ einstellbar ist auf die zeitgesteuerten Betriebsarten "Mikrowelle", "zeitgesteuerte Widerstandsheizung" und "Mikrowellen-Widerstands-Heizungskom­bination". Nimmt dieser Wahlschalter die Stellung "Mikrowelle" ein, so ist von Hand die Widerstandsheizung ein- und ausschaltbar unabhängig davon, ob Mikro­wellenbetrieb erfolgt oder nicht. Die Einstellung dieses Mikrowellenbetriebes erfolgt über Eingabeorgane der Zeit- und/oder Programmsteuereinrichtung.According to a preferred embodiment, the arrangement according to the invention is characterized in that a selector switch is assigned to the time and / or program control device, via which this program control device can alternatively be set to the time-controlled operating modes "microwave", "time-controlled resistance heating" and "microwave resistance heating combination ". If this selector switch takes the "microwave" position, the resistance heating can be switched on and off manually, regardless of whether microwave operation is taking place or not. This microwave mode is set via input elements of the time and / or program control device.

Ein nach Merkmalen der Erfindung ausgestaltetes Ausführungsbeispiel ist anhand der Zeichnung im folgenden beschrieben. Es zeigen:

  • Fig. 1 eine Herdbedienfront,
  • Fig. 2 ein Belegungsschema der Ansteuerbahnen für die Funktions­einrichtung durch einen Funktionswählschalter,
  • Fig. 3 eine Schaltung einer Herdsteuerung mit einer elektronischen Funktionssteuereinrichtung,
  • Fig. 4 eine Schaltung der Funktionssteuereinrichtung.
An embodiment designed according to the features of the invention is described below with reference to the drawing. Show it:
  • 1 is a stove control front,
  • 2 shows an assignment diagram of the control tracks for the functional device by means of a function selector switch,
  • 3 shows a circuit of a stove control with an electronic function control device,
  • Fig. 4 shows a circuit of the function control device.

Der Betriebsarten-Wahlschalter 1 dient zur Eingabe der Betriebsarten und zwar sind für die Betriebsarten "zeitgesteuerte Widerstandsheizung", "Mikrowelle" und "zeitge­steuerte Mikrowellen-Widerstands-Heizungskombination" je eine Schaltstellung vorge­sehen. In der Stellung "Mikrowelle" kann der Mikrowellenbetrieb dadurch vor­eingestellt und gestartet werden, daß über die entsprechenden Tasten 2 der Steuereinheit Mikrowellen-Leistungswerte und über einen Drehschalter 3 dieser Steuereinheit zugeordnete Zeitwerte eingegeben werden, die im Anzeige­display 4 angezeigt werden, und daß danach - aufgefordert durch das Blinken eine Anzeigeleuchte 5 in die Starttaste 6 betätigt wird. Vorzeitig ist der Mi­krowellenbetrieb durch das Beträtigen einer Stopptaste 7 zu beenden.The operating mode selector switch 1 is used to enter the operating modes, in each case one switching position is provided for the operating modes "time-controlled resistance heating", "microwave" and "time-controlled microwave-resistance heating combination". In the "microwave" position, the microwave operation can be preset and started by entering microwave power values via the corresponding buttons 2 of the control unit and time values assigned to this control unit via a rotary switch 3, which are shown on the display 4, and after that - prompted the indicator light 5 in the start button 6 is actuated by the flashing. Microwave operation must be ended prematurely by pressing a stop button 7.

einer Anzeigeleuchte 5 - die Starttaste 6 betätigt wird. Vorzeitig ist der Mi­krowellenbetrieb durch das Betätigen einer Stopptaste 7 zu beenden.an indicator light 5 - the start button 6 is pressed. Microwave operation must be ended prematurely by pressing a stop button 7.

Unabhängig davon, ob auf diese Weise ein Mikrowellenbetrieb durchgeführt wird oder nicht, kann in der Stellung "Mikrowelle" die Widerstandsheizung einge­stellt und durchgeführt werden. Zur Einstellung der Betriebswerte dient ein Temperaturwahlschalter 8, welcher neben der Position für die Backofenbeleuch­tung auf Temperaturwerte zwischen 50°C und 250°C sowie für einen Grillbetrieb eingestellt werden kann.Regardless of whether microwave operation is carried out in this way or not, the resistance heating can be set and carried out in the "microwave" position. A temperature selector switch 8 is used to set the operating values, which, in addition to the position for the oven lighting, can be set to temperature values between 50 ° C. and 250 ° C. and for a grill operation.

Soll die Widerstandsheizung zeitgesteuert durchgeführt werden, so ist in glei­cher Weise eine Einstellung über den Temperaturwahlschalter 8 vorzunehmen, der Wahlschalter 1 für die Betriebsarten jedoch ist in die Stellung "zeitgesteuer­te Widerstandsheizung" zu bringen. Nunmehr wird durch Blinken darauf aufmerk­sam gemacht, daß eine zugeordnete Taste 2 zu betätigen ist und über den Dreh­schalter 3 die Zeiteingabe zu erfolgen hat. Danach ist durch Betätigen der Starttaste 6 die zeitgesteuerte Widerstandsheizung zu starten.If the resistance heating is to be carried out in a time-controlled manner, a setting is to be made in the same way via the temperature selector switch 8, but the selector switch 1 for the operating modes is to be set to the "time-controlled resistance heating" position. It is now indicated by flashing that an assigned key 2 is to be pressed and the time must be entered via the rotary switch 3. Then the time-controlled resistance heating is started by pressing the start button 6.

In der Stellung "Mikrowellen-Heizungs-Kombination" können wie bei reinem Mi­krowellenbetrieb und bei reinem Widerstandsheizungsbetrieb die Einstellwerte eingegeben werden, wobei für den Widerstandsheizungsbetrieb die Einstellzeiten des Mikrowellenbetriebs automatisch übernommen werden. Der Start des Garungs­prozesses erfolgt ebenfalls über die Starttaste 6.In the "microwave-heating combination" position, the setting values can be entered as in the case of pure microwave mode and pure resistance heating mode, the setting times for microwave mode being automatically adopted for resistance heating mode. The cooking process is also started using the start button 6.

Wie aus der Fig. 3 hervorgeht, werden die unterschiedlichen Betriebsarten, die mit Hilfe des erfindungsgemäß ausgestatteten Herdes durchführbar sind, durch die Stel­lungen der Schalter F1, F2, F3 die durch Nocken des Wahlschalters 1 einstellbar sind, als Binärwerte realisiert, welche der Funktionssteuereinrichtung ZSt zugeleitet werden. Die Darstellung läßt erkennen, daß bei der Nutzung der Betriebsart mit thermischer Heizung die Schalter F1 und F3 bei Nutzung der Betriebsart mit Mi­krowellenheizung der Schalter F2 geöffnet gehalten wird. Werden beide Heizungsar­ten überlagert genutzt, so sind folgerichtig alle drei Schalter F1, F2, F3 geöffnet gehalten.As can be seen from FIG. 3, the different operating modes, which can be carried out with the aid of the cooker equipped according to the invention, are realized as binary values by the positions of the switches F1, F2, F3, which can be set by cams of the selector switch 1, which the function control device ZSt be forwarded. The illustration shows that when the operating mode with thermal heating is used, the switches F1 and F3 are kept open when the operating mode with microwave heating is used. If both types of heating are used in a superimposed manner, all three switches F1, F2, F3 are consequently kept open.

Fig. 4 zeigt, daß der Schalter F1 in den Heizungsstromkreis für die Heizwiderstände R1, R2, R3 geschaltet ist. Die Schalter F2 und F3 dienen der Informationseingabe für die Steuereinrichtung ZSt.Fig. 4 shows that the switch F1 is connected to the heating circuit for the heating resistors R1, R2, R3. The switches F2 and F3 are used to enter information for the control device ZSt.

Der Heizwiderstand R1 dient als Grillheizkörper und als Heizkörper für die Oberhit­ze, während die Heizwiderstände R2 und R3 der Unterhitze im Backrohr zugeordnet sind. Der Temperaturregler TR im Leistungsstromkreis wird durch den Temperatur­wahlschalter 8 (Fig. 1) auf den Betriebswert eingestellt. Auf der Welle des Tempera­turwählschalters sind weitere Nocken angeordnet, über welche die Schalter T1, T2 T3, T4 schaltbar sind. Die Schalter T1 und T2 werden geschlossen, wenn der Tem­peraturwahlschalter 8 in dem Bereich verdreht ist, in dem die Heizung erfolgen soll. Im Temperaturbereich bis zu 250°C bleibt der Schalter T2 geschlossen und der Schalter T3 geöffnet, so daß die Heizwiderstände R2 und R3 zur Bereitstellung der Unterhitze zur Verfügung stehen und der Heizwiderstand R1 - infolge der Reihen­schaltung mit dem Heizwiderstand R3 - die Oberhitze liefert. Wird der Temperatur­wahlschalter 8 in die Grillstellung verdreht, so öffnet der Schalter T2 und der Schalter T3 schließt. Damit sind die Heizwiderstände R2 und R3 außer Funktion ge­setzt und der Heizwiderstand R1 liegt nunmehr in der Funktion als Grillheizkörper an der vollen Versorgungsspannung. Der Regelbereich des Temperaturreglers TR ist ebenfalls ausgeschöpft, so daß der zugeordnete Schalter geschlossen bleibt. Je nach Dreheinstellung des Temperaturwahlschalters 8 im Grillbereich wirkt ein Energie­ regler ER zur Taktung des Heizstroms für den Heizwiderstand R1 leistungsreduzie­rend.The heating resistor R1 serves as a grill heater and as a heater for the top heat, while the heating resistors R2 and R3 are assigned to the bottom heat in the oven. The temperature controller TR in the power circuit is set to the operating value by the temperature selection switch 8 (FIG. 1). Further cams are arranged on the shaft of the temperature selector switch, via which the switches T1, T2, T3, T4 can be switched. The switches T1 and T2 are closed when the temperature selection switch 8 is rotated in the area in which the heating is to take place. In the temperature range up to 250 ° C, the switch T2 remains closed and the switch T3 is open, so that the heating resistors R2 and R3 are available to provide the bottom heat and the heating resistor R1 - due to the series connection with the heating resistor R3 - supplies the top heat. If the temperature selection switch 8 is turned to the grill position, the switch T2 opens and the switch T3 closes. This means that the heating resistors R2 and R3 are deactivated and the heating resistor R1 is now at the full supply voltage in the function as a grill radiator. The control range of the temperature controller TR is also exhausted, so that the assigned switch remains closed. Depending on the rotary setting of the temperature selector switch 8 in the grill area, an energy acts Regulator ER for clocking the heating current for the heating resistor R1 to reduce power.

Soll die thermische Heizung innerhalb einer vorgegebenen Zeitspanne beendet und diese Zeitspanne gegebenenfalls nicht sofort begonnen werden, so wird der Betriebs­arten-Wahlschalter 1 gegen den Uhrzeigersinn in die Betriebsart "thermische Hei­zung" verstellt. Die Schaltkontakte F1, F2, F3 werden dabei durch auf der Welle des Betriebsarten-Wahlschalters 1 angeordnete Nocken betätigt und zwar derart, daß der Schaltkontakt F1 und der Schaltkontakt F3 öffnen und der Schaltkontakt F2 schließt. Damit ist die Stromversorgung der Heizelemente über den Schaltkontakt F1 unterbrochen. Über die Zeit-/Programmsteuereinrichtung ZSt wird während der vor­gegebenen Zeitspanne ein Relais R11 erregt, welches den Relaisschalter Sr1 schließt, so daß über diesen Relaisschalter Sr1 der Heizstrom geführt wird. Weitere durch die Zeit-/Programmsteuereinrichtung ZSt beeinflußbare Relais R12, R13, R14 dienen über die zugeordneten Relaisschalter Sr2, Sr3, Sr4 zur Steuerung des Mikrowellengenera­tors mit dem Magnetron Mg. Dieser Mikrowellengenerator ist generell nur über die Zeit-/Programmsteuereinrichtung ZSt betreibbar. Die Kontakte e1, e2, e3 dienen der Türsicherung während des Mikrowellenbetriebes.If the thermal heating is to be ended within a predetermined period of time and this period of time may not be started immediately, the operating mode selector switch 1 is set counterclockwise to the "thermal heating" operating mode. The switch contacts F1, F2, F3 are actuated by cams arranged on the shaft of the operating mode selector switch 1 in such a way that the switch contact F1 and the switch contact F3 open and the switch contact F2 closes. The power supply to the heating elements via the switch contact F1 is thus interrupted. A relay R11, which closes the relay switch Sr1, is excited via the time / program control device ZSt during the predetermined time period, so that the heating current is conducted via this relay switch Sr1. Further relays R12, R13, R14 which can be influenced by the time / program control device ZSt are used via the assigned relay switches Sr2, Sr3, Sr4 to control the microwave generator with the magnetron Mg. This microwave generator can generally only be operated via the time / program control device ZSt. The contacts e1, e2, e3 serve to secure the door during microwave operation.

Fig. 4 zeigt die Zeit-/Programmsteuereinrichtung ZSt in Verbindung mit den Einga­beorganen. Die zentrale Einheit dieser Zeit-/Programmsteuereinrichtung ist ein Mi­kroprozessor µP (z.B. KS5 100 von Tristar), dessen Eingänge K1, K2, K3, K4 sowohl durch die Schalterkontakte L3 der Tasten 2 (gemäß Fig. 1) als auch durch Schalter­kontakte F2, F3 e1, S6, S7 über die Ausgänge R1 bzw. R0 bzw. R3 gemultiplext angeschaltet sind. Über die Ausgänge R8 bis R10 werden die Relais R11, R12, R13, R14, von denen in der Figur lediglich das Relais R11 dargestellt ist, angesteuert. Das Relais R11 ist - wie insb. aus Fig. 3 hervorgeht - der thermischen Heizung zu­geordnet und hält während der voreingestellten Zeitspanne den zugeordneten Relais­schalter Sr1 geschlossen. Das Relais R14 ist während der vorgegebenen Zeitspanne bei Mikrowellenbetrieb erregt und hält den zugeordneten Relaisschalter Sr4 geschlos­sen. Über die Relais R12 und R13 und die zugeordneten Relaisschalter Sr2 und Sr3 erfolgt die Leistungstaktung der Mikrowelleneinrichtung. Zur Anzeige von Zeit- und Betriebsdaten sowie von Betriebszuständen ist die Displayanordnung (z.B. 4-LT-13 von Futaba) angeordnet, die durch die Ausgänge R0 bis R6 und 00 bis 07 des Mi­kroprozessors uP in bekannter Art angesteuert wird.Fig. 4 shows the time / program control device ZSt in connection with the input elements. The central unit of this time / program control device is a microprocessor µP (eg KS5 100 from Tristar), whose inputs K1, K2, K3, K4 both through the switch contacts L3 of the keys 2 (according to FIG. 1) and through switch contacts F2, F3 e1, S6, S7 are multiplexed via the outputs R1, R0 and R3. The relays R11, R12, R13, R14, of which only the relay R11 is shown in the figure, are controlled via the outputs R8 to R10. The relay R11 is - as can be seen in particular from FIG. 3 - assigned to the thermal heating and keeps the assigned relay switch Sr1 closed during the preset time period. The relay R14 is energized during the predetermined period in microwave operation and keeps the associated relay switch Sr4 closed. Via the relays R12 and R13 and the assigned relay switches Sr2 and Sr3 the microwave device is powered. The display arrangement (for example 4-LT-13 from Futaba), which is controlled in a known manner by the outputs R0 to R6 and 00 to 07 of the microprocessor uP, is arranged to display time and operating data as well as operating states.

Für die Vorgabe des Zeitraumes, in dem der Garungsprozess ablaufen soll, ist gleichzeitig zur Betätigung des Drehknopfes 3 und die dabei taktende Betätigung der Schalter L3, je nachdem, ob die Zeitdauer oder das Zeitende einggeben werden soll, die Taste 6 oder die Taste 7 zu drücken und dabei die entsprechenden Kontake L3 zu schließen. die Schalter S6 und S7 sind der Starttaste 6 bzw. der Stoptaste 7 zu­geordnet.To specify the period in which the cooking process is to take place, the button 6 or the button 7 is closed simultaneously with the actuation of the rotary knob 3 and the clocked actuation of the switch L3, depending on whether the duration or the end of the time is to be entered Press and close the corresponding contacts L3. switches S6 and S7 are assigned to start button 6 and stop button 7, respectively.

Die erforderliche Einrichtung für die Stromversorgung ist, da sie nicht erfindungswe­sentlich ist und nach allgemein bekannter Art aufgebaut werden kann, nicht darge­stellt und beschrieben. Für die verwendeten Bauelemente sind Spannungen U0 = 0 V, UC = 24 V, UV = 8,5 V und eine zur Spannung UC symmetrierte Wechselstrom-­Spannung von 3,5 V zur Heizung der Leuchtsegmente des Displays 3 erforderlich. Der Taktimpuls T wird in bekannter Weise aus dem Betriebs-Wechselstrom gene­riert.The necessary device for the power supply is not shown and described, since it is not essential to the invention and can be constructed in a generally known manner. For the components used, voltages U0 = 0 V, UC = 24 V, UV = 8.5 V and an AC voltage of 3.5 V symmetrical to the voltage UC are required to heat the light segments of the display 3. The clock pulse T is generated in a known manner from the operating alternating current.

Claims (2)

1. Anordnung zum Ansteuern von Herden zum Erhitzen und Garen von Speisen und Flüssigkeiten mit Mikrowellenenergie und/oder Wärmeenergie durch Wider­standsheizung unter Verwendung einer Zeit- und/oder Programmsteuereinrich­tung, durch welche die Mikrowellenenergie bezüglich Heizleistung durch Tak­tung und bezüglich Heizdauer einstellbar ist, dadurch gekenn­zeichnet, daß Schaltmaßnahmen der Zeit- und/oder Programmsteuerein­heit (2-7) zugeordnet sind, daß die Widerstandsheizung entsprechend einge­stellter Temperatur und/oder Energiewert für die Dauer des Mikrowellenbe­triebes dem Gargut zugeführt werden.1. Arrangement for controlling cookers for heating and cooking food and liquids with microwave energy and / or thermal energy by means of resistance heating using a time and / or program control device by means of which the microwave energy can be adjusted with respect to heating power by clocking and with regard to heating duration, characterized in that that switching measures of the time and / or program control unit (2-7) are assigned, that the resistance heating according to the set temperature and / or energy value are supplied to the food for the duration of the microwave operation. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß ein Wahlschalter (1) der Zeit- und/oder Programmsteuereinrichtung (2-7) zugeordnet ist, über welchen diese Programmsteuereinrichtung alternativ einstellbar ist auf die zeitgesteuerten Betriebsarten "Mikrowelle", "zeitgesteuerte Widerstandshei­zung" und "Mikrowellen-Widerstands-Heizungskombination".2. Arrangement according to claim 1, characterized in that a selector switch (1) of the time and / or program control device (2-7) is assigned, via which this program control device is alternatively adjustable to the time-controlled operating modes "microwave", "time-controlled resistance heating" and "microwave resistance heater combination".
EP86110857A 1985-08-06 1986-08-06 Arrangement for controlling ovens employing micro-waves and/or heat energy Expired - Lifetime EP0213442B1 (en)

Applications Claiming Priority (2)

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DE3528228 1985-08-06
DE19853528228 DE3528228A1 (en) 1985-08-06 1985-08-06 ARRANGEMENT FOR CONTROLLING OVENS WITH MICROWAVE ENERGY AND / OR HEATING ENERGY

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EP0503898A1 (en) * 1991-03-15 1992-09-16 Kabushiki Kaisha Toshiba Heating apparatus
EP0609161A1 (en) * 1993-01-29 1994-08-03 Eaton Controls S.A. Control for combined microwave and grill oven
GB2281016A (en) * 1993-08-10 1995-02-15 Ea Tech Ltd Microwave-assisted processing of materials
EP0679045A2 (en) * 1994-04-21 1995-10-25 Samsung Electronics Co., Ltd. Control apparatus of microwave oven
WO2000042824A1 (en) * 1999-01-13 2000-07-20 General Electric Company Combination oven with manual entry of control algorithms
WO2000042823A1 (en) 1999-01-13 2000-07-20 General Electric Company Combination oven using radiant and microwave energy
WO2006048062A1 (en) * 2004-11-04 2006-05-11 Daimlerchrysler Ag Method and device for the thermal protection for at least one drive in a vehicle
WO2013087537A1 (en) * 2011-12-14 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance and method

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JPS5729628A (en) * 1980-07-28 1982-02-17 Teijin Ltd Hemp like two layered fused processed yarn and method
DE3717224A1 (en) * 1987-05-22 1988-12-08 Licentia Gmbh Baking and roasting oven
JPH0274642A (en) * 1988-09-06 1990-03-14 Teijin Ltd Weaving of composite false-twisted yarn
DE3906504A1 (en) * 1989-03-01 1990-09-13 Bosch Siemens Hausgeraete MICROWAVE HOUSEHOLD APPLIANCE
DE4008827A1 (en) * 1990-03-20 1991-09-26 Miele & Cie OPERATING AND DISPLAY DEVICE
DE9407567U1 (en) * 1994-05-06 1994-07-07 Gebr. Seppelfricke GmbH, 45881 Gelsenkirchen Device for the electronic control of gas and electric cookers and / or ovens
EP2061287B1 (en) 2007-11-15 2015-03-25 Topinox Sarl Method to adjust the timing of a pulsed microwave generator for a cooking device and cooking device for this

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EP0503898A1 (en) * 1991-03-15 1992-09-16 Kabushiki Kaisha Toshiba Heating apparatus
EP0609161A1 (en) * 1993-01-29 1994-08-03 Eaton Controls S.A. Control for combined microwave and grill oven
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GB2281016A (en) * 1993-08-10 1995-02-15 Ea Tech Ltd Microwave-assisted processing of materials
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EP0679045A2 (en) * 1994-04-21 1995-10-25 Samsung Electronics Co., Ltd. Control apparatus of microwave oven
EP0679045A3 (en) * 1994-04-21 1996-05-08 Samsung Electronics Co Ltd Control apparatus of microwave oven.
WO2000042824A1 (en) * 1999-01-13 2000-07-20 General Electric Company Combination oven with manual entry of control algorithms
WO2000042823A1 (en) 1999-01-13 2000-07-20 General Electric Company Combination oven using radiant and microwave energy
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WO2006048062A1 (en) * 2004-11-04 2006-05-11 Daimlerchrysler Ag Method and device for the thermal protection for at least one drive in a vehicle
WO2013087537A1 (en) * 2011-12-14 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance and method
CN103988025A (en) * 2011-12-14 2014-08-13 Bsh博世和西门子家用电器有限公司 Domestic appliance and method
CN103988025B (en) * 2011-12-14 2017-06-06 Bsh家用电器有限公司 Household electrical appliance and method

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EP0213442B1 (en) 1990-11-14
JPS6235493A (en) 1987-02-16
DE3528228A1 (en) 1987-02-12
DE3675607D1 (en) 1990-12-20

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