EP0786629B1 - Stromversorgung von Heizwiderständen für Unter- und Oberhitze an elektrischen Haushaltherden - Google Patents

Stromversorgung von Heizwiderständen für Unter- und Oberhitze an elektrischen Haushaltherden Download PDF

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Publication number
EP0786629B1
EP0786629B1 EP19970400103 EP97400103A EP0786629B1 EP 0786629 B1 EP0786629 B1 EP 0786629B1 EP 19970400103 EP19970400103 EP 19970400103 EP 97400103 A EP97400103 A EP 97400103A EP 0786629 B1 EP0786629 B1 EP 0786629B1
Authority
EP
European Patent Office
Prior art keywords
control device
switch
power supply
temperature
timer
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 - Lifetime
Application number
EP19970400103
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English (en)
French (fr)
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EP0786629A2 (de
EP0786629A3 (de
Inventor
Philippe Louis Robert Baillieul
Bernard Marcel Bois
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.)
SEB SA
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SEB SA
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Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Publication of EP0786629A2 publication Critical patent/EP0786629A2/de
Publication of EP0786629A3 publication Critical patent/EP0786629A3/de
Application granted granted Critical
Publication of EP0786629B1 publication Critical patent/EP0786629B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • 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 invention relates to a feeding device.
  • an arch heating resistance and a resistance floor heating of an oven cooking chamber electric household appliances that are connected in parallel to a power source and comprising, on the one hand, a first control device mounted in series with said heating resistors and, secondly, a second control device connected in series with the resistor sole heating.
  • Said first control device has a first switch-timer for controlling heating resistors activated by a first button likely to take determined positions limiting the operating time of the heating resistors and an adjustable thermostat mounted in series with the first timer switch, controlled by a second button likely to take determined positions limiting the temperature of the cooking chamber, and whose setting temperatures vary between a temperature minimum and maximum temperature.
  • the second device control includes a switch controlled by a first control member and occupying either a position of "oven operation” for which the resistance of sole is connected to the power source, i.e. "grill operation” position for which the floor resistance is disconnected from the source Power.
  • the object of the invention is to remedy the aforementioned drawbacks by implementing a device simple and reliable power supply for processing in the best conditions for any type of food.
  • the supply device has a third control device connected in parallel on the first control device and including a second control timer switch activated by a third button and occupying at least two positions, i.e. an open position for which the third control device leaves free supplying the heating resistors of vaults and sole by the first control device, i.e. closed position for which the second switch-minimum active control, i.e. the supply of vault and sole resistances for a first duration T1 if the switch of the second control device is in the "oven operation" position, ie the supply of the arch resistor during the first duration T1 if the switch of the second device is in the "grill operation" position.
  • a third control device connected in parallel on the first control device and including a second control timer switch activated by a third button and occupying at least two positions, i.e. an open position for which the third control device leaves free supplying the heating resistors of vaults and sole by the first control device, i.e. closed position for which the second switch
  • the user can trigger, with a single button control, a heating operation on a type of a particular food, for example a pizza or a gratin, ensuring a fast and reliable result.
  • the third control device further comprises a fixed thermostat fitted in series with the second switch-timer and whose setting temperature is higher than the maximum thermostat temperature adjustable from the first control device.
  • Such a feeding device therefore promotes more powerful and faster rise in temperature the cooking chamber and improves the functioning of electric household ovens for food individuals.
  • the oven 1 comprises an enclosure 2 which opens on its front side with a door 3 articulated around a horizontal axis not shown located near its lower edge and which contains a vault heating resistance 4 and a resistance hearth heater 5 for cooking food placed on an intermediate shelf 6 represented by broken lines.
  • the heating resistors 4 and 5 are connected in parallel to a source supply 7 such as for example sector 220 volts and are controlled by a power device comprising a first control device 8 mounted in series with said heating resistors 4 and 5.
  • a first end 9 of the vault heating resistance 4 is connected to a first junction point 10.
  • Said first junction point 10 is connected to a first end it of the first control device 8.
  • a second end 12 of the first control device 8 is connected to one of the polarized 13 of the source supply 7.
  • the first control device 8 has a first control timer switch 14 and an adjustable thermostat 15 mounted in series with said first control switch-timer 14.
  • the first timer switch 14 is activated by a first button not shown, generally placed on the face front of the electric household oven and likely to take determined positions limiting the duration of heating resistors.
  • the thermostat adjustable 15 is controlled by a second button not shown, also placed on the front of the oven electric household, likely to take positions determined limiting the temperature of the enclosure cooking and whose setting temperatures vary between minimum temperature and maximum temperature.
  • the end 11 of the first control device 8 is connected to a first contact 16 of the adjustable thermostat 15.
  • a second contact 19 of the first timer-switch 14 is connected to the second end 12 of the first control device 8.
  • the adjustable thermostat minimum temperature 15 has a value close to 100 ° C and the temperature maximum adjustable thermostat setting 15 has a value close to 280 ° C.
  • a second end 20 of the heating resistor vault 4 is connected to a second junction point 30.
  • a first end 21 of the resistor floor heater 5 is connected to a first input 22 a second control device 23.
  • a second input 24 of the second control device 23 is connected at the first junction point 10.
  • the second device 23 thus mounted in series with the resistor heater 5 has a controlled switch 25 by a first control member not shown and occupying either a closed position not shown and called “oven operation" position for which the resistance of sole 5 is likely to be supplied, either an open position as shown and said position of "grill operation” for which the resistance heater 5 is disconnected from the source supply 7.
  • the first input 22 is connected to a first contact 26 of switch 25.
  • a second contact 27 of switch 25 is connected to the second end 24 of the second control device 23.
  • a second end 28 of the heating resistor floor 5 is connected to the second junction point 30.
  • Said second junction point 30 is connected to a first end 31 of a fuse 32.
  • a second end 33 of fuse 32 is connected to the second polarity 34 from the power source 7.
  • Said fuse 32 thus mounted in series downstream of the heating resistors vault 4 and sole 5, is intended to protect the oven household electrical 1 against too large an increase the temperature of the cooking chamber 2 in case among others, the adjustable thermostat 15.
  • fuse 32 plays its role as a circuit breaker when the temperature of the cooking chamber 2 is substantially greater than 400 ° C.
  • the supply device has a third control device 35 connected in parallel on the first control device 8 and including a second control timer switch 36 activated by a second control button and occupying at least two positions, i.e. an open position for which the third control device 35 leaves free supply of the heating elements of the roof and sole 4 and 5 by the first control device 8, or a closed position for which the second active timer switch, i.e. top and bottom heating elements 4 and 5 during a first duration T1 if the switch 25 of the second control device 23 is in position "oven operation", that is to say the supply of the vault heating resistance 4 during the first duration T1 if the switch 25 of the second device control 23 is in the "grill operation" position.
  • a third control device 35 connected in parallel on the first control device 8 and including a second control timer switch 36 activated by a second control button and occupying at least two positions, i.e. an open position for which the third control device 35 leaves free supply of the heating elements of the roof and sole 4 and 5 by the first control device 8,
  • the third control device 35 comprises a fixed thermostat 38 fitted in series with the second timer switch 36 and therefore the setting temperature is higher than the maximum temperature for setting the adjustable thermostat 15.
  • a first end 39 of the third control device 35 is connected to a first terminal 40 of the fixed thermostat 38.
  • a second terminal 41 of the fixed thermostat 38 is connected to a first contact 42 of the second timer switch 36.
  • a second contact 43 of the second switch-timer 36 is connected to a second end 44 of the third control device 35.
  • Said second end 44 of the third control device 35 is connected at polarity 13 of the power source 7.
  • the set thermostat temperature (35) present a value close to 290 ° C.
  • the second timer switch 36 can occupy one third position also closed for which the second timer switch 36 activates the power supply top and / or bottom heating resistors 4 and 5 during a second duration T2 greater than the duration T1.
  • the first duration T1 has a value within a range of 10 to 15 minutes for processing food such as pizza and the second duration T2 has a value included in a range between 20 and 30 minutes for treatment foods such as gratins.
  • the user after having checked the position of the second control device 23 in “operation in oven, "places food, for example, pizza, on the intermediate stage 6 and closes the door 3 of the household oven electric.
  • the food to be treated being a pizza
  • the user handles the second control button in a P1 position for which the second timer switch 36 triggers the supply of the heating resistors of vault and sole 4 and 5 for the duration T1. So the oven temperature rises to temperature of 280 ° C in about 4 minutes with a total power of the 2,200 W heating resistors and therefore allows optimal processing of the food.
  • a warning device known as self and connected in the feeding device, sending an end of heating operation signal to the user. The user can thus remove from the cooking chamber processed food.
  • the user after having checked the position of the second control device 23 in "operation grill "places the food in the cooking compartment 2 and manipulate the second command button on a position P2 for which the second timer switch 36 triggers the supply of the arch resistor 4 during the T2 period.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)

Claims (5)

  1. Versorgungsvorrichtung für Heizwiderstände (4 und 5) für Ober- und Unterhitze eines Kochraums (2) eines elektrischen Haushaltsofens (1), die zu einer Versorgungsquelle (7) parallelgeschaltet sind, und die einerseits eine erste Steuereinrichtung (8) aufweist, die mit den Heizwiderständen (4 und 5) in Reihe geschaltet ist und einen ersten Zeitschalter (14) zum Steuern der Versorgung der Heizwiderstände (4 und 5) aufweist, der durch einen ersten Knopf betätigt wird, der bestimmte Positionen einnehmen kann, die die Betriebsdauer der Heizwiderstände (4 und 5) begrenzen, und einen regelbaren Thermostat (15), der mit dem ersten Zeitschalter (14) in Reihe geschaltet ist, und der von einem zweiten Knopf gesteuert wird, der bestimmte Positionen einnehmen kann, die die Temperatur des Kochraums (2) begrenzen, und dessen Regeltemperaturen zwischen einer minimalen und einer maximalen Temperatur variieren, und andererseits eine zweite Steuereinrichtung (23), die mit dem Heizwiderstand (5) für Unterhitze in Reihe geschaltet ist und einen Umschalter (25) aufweist, der von einem ersten Steuerorgan gesteuert wird und entweder eine Position des "Betriebs als Ofen", für welche der Heizwiderstand (5) für Unterhitze mit der Versorgungsquelle (7) verbunden ist, oder eine Position des "Betriebs als Grill" einnimmt, für welche der Heizwiderstand (5) für Unterhitze von der Versorgungsquelle (7) getrennt ist, dadurch gekennzeichnet, daß sie eine dritte Steuereinrichtung (35) aufweist, die zu der ersten Steuereinrichtung (8) parallelgeschaltet ist und einen zweiten Steuerzeitschalter (36) aufweist, der von einem zweiten Steuerknopf aktiviert wird und wenigstens zwei Positionen einnimmt, entweder eine geöffnete Position, für die die dritte Steuereinrichtung (35) die Versorgung der Heizwiderstände (4 und 5) für Oberhitze und Unterhitze durch die erste Steuereinrichtung (35) frei läßt, oder eine geschlossene Position, für die der zweite Zeitschalter (36) entweder die Heizwiderstände (4 und 5) während einer ersten Zeitdauer T1 aktiviert, wenn sich der Umschalter (25) der zweiten Steuereinrichtung (23) in der Position "Betrieb als Ofen" befindet, oder die Versorgung des Heizwiderstands (4) für Oberhitze während der ersten Zeitdauer T1, wenn sich der Umschalter (25) der zweiten Steuereinrichtung (23) in der Position "Betrieb als Grill" befindet.
  2. Versorgungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die dritte Steuereinrichtung (35) ferner einen festen Thermostat (38) aufweist, der mit dem zweiten Zeitschalter (36) in Reihe geschaltet ist und dessen Regeltemperatur einen höheren Wert als die maximale Regeltemperatur der ersten Steuereinrichtung (35) aufweist.
  3. Versorgungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der zweite Zeitschalter (36) eine dritte, ebenfalls geschlossene Position einnehmen kann, für die der zweite Zeitschalter (36) die Versorgung der Heizwiderstände (4 und 5) für Oberhitze und/oder Unterhitze während einer zweiten Zeitdauer T2 steuert, die länger als die erste Zeitdauer T1 ist.
  4. Versorgungsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Leistung jedes der Heizwiderstände (4 und 5) für Oberhitze und Unterhitze jeweils bei etwa 1100 W gewählt ist, die erste Zeitdauer einen Wert in einem Bereich zwischen 10 und 15 Minuten aufweist und die zweite Zeitdauer T2 einen Wert in einem Bereich zwischen 20 und 30 Minuten aufweist.
  5. Versorgungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die minimale Regeltemperatur des regelbaren Thermostats (15) einen Wert in der Nähe von 100°C aufweist, die maximale Regeltemperatur des Thermostats (15) einen Wert in der Nähe von 280°C aufweist und die Regeltemperatur des festen Thermostats (35) einen Wert in der Nähe von 290°C aufweist.
EP19970400103 1996-01-26 1997-01-20 Stromversorgung von Heizwiderständen für Unter- und Oberhitze an elektrischen Haushaltherden Expired - Lifetime EP0786629B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9600948A FR2744322B1 (fr) 1996-01-26 1996-01-26 Dispositif d'alimentation des resistances chauffantes de voute et de sole d'un four menager electrique
FR9600948 1996-01-26

Publications (3)

Publication Number Publication Date
EP0786629A2 EP0786629A2 (de) 1997-07-30
EP0786629A3 EP0786629A3 (de) 1999-03-03
EP0786629B1 true EP0786629B1 (de) 2003-06-04

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EP19970400103 Expired - Lifetime EP0786629B1 (de) 1996-01-26 1997-01-20 Stromversorgung von Heizwiderständen für Unter- und Oberhitze an elektrischen Haushaltherden

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EP (1) EP0786629B1 (de)
DE (1) DE69722473T2 (de)
ES (1) ES2200128T3 (de)
FR (1) FR2744322B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009276015A (ja) * 2008-05-16 2009-11-26 Panasonic Corp 電熱加熱装置付き高周波加熱装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2111070B2 (de) * 1971-03-09 1973-08-30 Siemens Electrogerate GmbH, 1000 Berlin u 8000 München Back- und bratofen
DE2635220A1 (de) * 1976-08-05 1978-02-09 Licentia Gmbh Sicherheitseinrichtung fuer den bratraum von elektroherden
DE2757059C2 (de) * 1977-12-21 1985-05-02 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Backofen mit Umluftgebläse und Stahlungsheizkörpern

Also Published As

Publication number Publication date
DE69722473D1 (de) 2003-07-10
EP0786629A2 (de) 1997-07-30
DE69722473T2 (de) 2004-05-06
FR2744322A1 (fr) 1997-08-01
FR2744322B1 (fr) 1999-12-31
EP0786629A3 (de) 1999-03-03
ES2200128T3 (es) 2004-03-01

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