EP0786629B1 - Dispositif d'alimentation des résistances chauffantes de voute et de sole d'un four ménager électrique - Google Patents
Dispositif d'alimentation des résistances chauffantes de voute et de sole d'un four ménager électrique Download PDFInfo
- 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
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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)
Description
- la figure 1 représente schématiquement un four ménager électrique en coupe verticale et auquel est appliqué le dispositif d'alimentation de l'invention;
- la figure 2 est un schéma électrique du dispositif d'alimentation des résistances chauffantes selon l'invention.
Claims (5)
- Dispositif d'alimentation des résistances chauffantes de voûte et de sole (4 et 5) d'une enceinte de cuisson (2) d'un four ménager électrique (1) qui sont branchées en parallèle sur une source d'alimentation (7) et comprenant, d'une part, un premier dispositif de commande (8) monté en série avec. lesdites résistances chauffantes (4 et 5) et comportant un premier interrupteur-minuteur (14) de commande de l'alimentation des résistances chauffantes (4 et 5) actionné par un premier bouton susceptible de prendre des positions déterminées limitant la durée de fonctionnement des résistances chauffantes (4 et 5) et un thermostat réglable (15) monté en série avec le premier interrupteur-minuteur (14), commandé par un deuxième bouton susceptible de prendre des positions déterminées limitant la température de l'enceinte de cuisson (2) et dont les températures de réglage varient entre une température minimum et une température maximum et, d'autre part, un deuxième dispositif de commande (23) monté en série avec la résistance chauffante de sole (5) et comprenant un commutateur (25) commandé par un premier organe de commande et occupant soit une position de "fonctionnement en four" pour laquelle la résistance chauffante de sole (5) est connectée à la source d'alimentation (7), soit une position de "fonctionnement en gril" pour laquelle la résistance de sole (5) est déconnectée de la source d'alimentation (7),
caractérisé en ce qu'il comporte un troisième dispositif de commande (35) branché en parallèle sur le premier dispositif de commande (8) et comprenant un deuxième interrupteur-minuteur (36) de commande activé par un deuxième bouton de commande et occupant au moins deux positions, soit une position ouverte pour laquelle le troisième dispositif de commande (35) laisse libre l'alimentation des résistances chauffantes de voûte et de sole (4 et 5) par le premier dispositif de commande (35), soit une position fermée pour laquelle le deuxième interrupteur-minuteur (36) active, soit les résistances chauffantes de voûte et de sole (4 et 5) pendant une première durée T1 si le commutateur (25) du deuxième dispositif de commande (23) est en position de "fonctionnement en four", soit l'alimentation de la résistance chauffante de voûte (4) pendant la première durée T1 si le commutateur (25) du deuxième dispositif de commande (23) est en position de "fonctionnement en gril". - Dispositif d'alimentation selon la revendication 1,
caractérisé en ce que le troisième dispositif de commande (35) comprend, en outre, un thermostat fixe (38) monté en série avec le deuxième interrupteur-minuteur (36), et dont la température de réglage présente une valeur supérieure à la température maximum du réglage du premier dispositif de commande (35). - Dispositif d'alimentation selon la revendication 1 ou 2,
caractérisé en ce que le deuxième interrupteur-minuteur (36) peut occuper une troisième position également fermée pour laquelle le deuxième interrupteur-minuteur (36) active l'alimentation des résistances chauffantes de voûte et/ou de sole (4 et 5) pendant une deuxième durée T2 supérieure à la première durée T1. - Dispositif d'alimentation selon la revendication 3,
caractérisé en ce que la puissance de chacune de résistances chauffantes de voûte et de sole (4 et 5) étant choisie respectivement aux environs de 1 100 W, la première durée T1 présente une valeur comprise dans une plage entre 10 et 15 minutes et la deuxième durée T2 présente une valeur comprise dans une plage entre 20 et 30 minutes. - Dispositif d'alimentation selon l'une quelconque des revendications précédentes,
caractérisé en ce que la température minimum de réglage du thermostat réglable (15) présente une valeur voisine de 100 °C, la température maximum de réglage du thermostat (15) présente une valeur voisine de 280 °C, et la température de réglage du thermostat fixe (35) présente une valeur voisine de 290 °C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9600948 | 1996-01-26 | ||
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 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0786629A2 EP0786629A2 (fr) | 1997-07-30 |
EP0786629A3 EP0786629A3 (fr) | 1999-03-03 |
EP0786629B1 true EP0786629B1 (fr) | 2003-06-04 |
Family
ID=9488521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970400103 Expired - Lifetime EP0786629B1 (fr) | 1996-01-26 | 1997-01-20 | Dispositif d'alimentation des résistances chauffantes de voute et de sole d'un four ménager électrique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0786629B1 (fr) |
DE (1) | DE69722473T2 (fr) |
ES (1) | ES2200128T3 (fr) |
FR (1) | FR2744322B1 (fr) |
Families Citing this family (1)
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)
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 |
-
1996
- 1996-01-26 FR FR9600948A patent/FR2744322B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-20 EP EP19970400103 patent/EP0786629B1/fr not_active Expired - Lifetime
- 1997-01-20 DE DE69722473T patent/DE69722473T2/de not_active Expired - Fee Related
- 1997-01-20 ES ES97400103T patent/ES2200128T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0786629A2 (fr) | 1997-07-30 |
FR2744322A1 (fr) | 1997-08-01 |
FR2744322B1 (fr) | 1999-12-31 |
DE69722473T2 (de) | 2004-05-06 |
EP0786629A3 (fr) | 1999-03-03 |
DE69722473D1 (de) | 2003-07-10 |
ES2200128T3 (es) | 2004-03-01 |
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