EP0786629A2 - 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
EP0786629A2
EP0786629A2 EP97400103A EP97400103A EP0786629A2 EP 0786629 A2 EP0786629 A2 EP 0786629A2 EP 97400103 A EP97400103 A EP 97400103A EP 97400103 A EP97400103 A EP 97400103A EP 0786629 A2 EP0786629 A2 EP 0786629A2
Authority
EP
European Patent Office
Prior art keywords
control device
switch
control
heating resistors
duration
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.)
Granted
Application number
EP97400103A
Other languages
English (en)
French (fr)
Other versions
EP0786629B1 (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
Original Assignee
Moulinex SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moulinex SA filed Critical Moulinex 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
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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 device for supplying a roof heating resistor and a floor heating resistor of a cooking enclosure of an electric household oven which 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, on the other hand, a second control device mounted in series with the floor heating resistance.
  • Said first control device comprises a first switch-timer for controlling the heating resistors actuated by a first button capable of taking determined positions limiting the operating time of the heating resistors and an adjustable thermostat mounted in series with the first switch-timer, controlled by a second button capable of taking determined positions limiting the temperature of the cooking chamber, and whose adjustment temperatures vary between a minimum temperature and a maximum temperature.
  • the second control device includes a switch controlled by a first control member and occupying either an "oven operation" position for which the hearth resistance is connected to the power source, or a "grill operation” position. for which the floor resistor is disconnected from the power source.
  • the object of the invention is to remedy the aforementioned drawbacks by using a simple and reliable supply device making it possible to treat any type of food under the best conditions.
  • the supply device comprises a third control device connected in parallel to the first control device and comprising a second control timer switch activated by a third button and occupying at least two positions, ie an open position for which the third control device allows free supply of the heating resistors of the roof and of floor by the first control device, either a closed position for which the second minimum control switch activates, or the supply of the vault and floor resistors for a first duration T1 if the switch of the second control device is in the position of "oven operation", that is to say the supply of the roof resistor for the first duration T1 if the switch of the second control device is in the "grill operation" position.
  • the user can trigger, with a single control button, a heating operation on a particular type of food, for example a pizza or a gratin, ensuring a result fast and reliable.
  • the third control device further comprises a fixed thermostat mounted in series with the second timer switch and whose control temperature is higher than the maximum temperature of the adjustable thermostat of the first control device .
  • Such a supply device therefore promotes a more powerful and faster rise in temperature of the cooking chamber and improves the operation of electric household ovens for particular foods.
  • the oven 1 comprises a cooking enclosure 2 which opens on its front face by a door 3 articulated around a horizontal axis, not shown, situated in the vicinity of its lower edge and which contains a vault heating resistance. 4 and a floor heating resistor 5 making it possible to cook food placed on an intermediate shelf 6 represented by broken lines.
  • the heating resistors 4 and 5 are connected in parallel to a power source 7 such as for example the 220 volt sector and are controlled by a power supply 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 11 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 power source 7.
  • the first control device 8 includes a first control timer switch and an adjustable thermostat 15 mounted in series with said first control timer switch 14.
  • the first timer switch 14 is actuated by a first button, not shown, generally placed on the front face of the household electric oven and capable of taking determined positions limiting the operating time of the heating resistors.
  • the thermostat adjustable 15 is controlled by a second button (not shown), also placed on the front face of the domestic electric oven, capable of taking determined positions limiting the temperature of the cooking chamber and whose adjustment temperatures vary between a minimum temperature and a 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 control timer switch 14 is connected to the second end 12 of the first control device 8.
  • the minimum temperature for setting the adjustable thermostat 15 has a value close to 100 ° C. and the maximum temperature for setting the adjustable thermostat 15 has a value close to 280 ° C.
  • a second end 20 of the roof heating resistor 4 is connected to a second junction point 30.
  • a first end 21 of the floor heating resistor 5 is connected to a first inlet 22 of a second control device 23.
  • a second input 24 of the second control device 23 is connected to the first junction point 10.
  • the second control device 23 thus mounted in series with the floor heating resistor 5 comprises a switch 25 controlled by a first control member not shown and occupying either a closed position not shown and called the "oven operation" position for which the hearth resistance 5 can be supplied, or an open position as shown and called the "grill operation” position for which the heating resistance of sole 5 is disconnected from the power source 7.
  • the first input 22 is connected to a first contact 26 of switch 25.
  • a second contact 27 of the switch 25 is connected to the second end 24 of the second control device 23.
  • a second end 28 of the floor heating resistor 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 the fuse 32 is connected to the second polarity 34 of the power source 7.
  • Said fuse 32 thus mounted in series downstream of the vault 4 and hearth heating resistors 5, is intended to protect the electric household oven 1 against an excessive increase in the temperature of the cooking enclosure 2 in the event of failure, among other things, of the adjustable thermostat 15.
  • the fuse 32 acts as a circuit breaker when the temperature of the cooking enclosure 2 is substantially higher than 400 ° C.
  • the supply device comprises a third control device 35 connected in parallel to the first control device 8 and comprising a second control timer switch 36 activated by a second control button and occupying at least two positions , either an open position for which the third control device 35 leaves free the supply of the top and bottom heating resistors 4 and 5 by the first control device 8, or a closed position for which the second switch-timer activates, either the supply of the top and bottom heaters 4 and 5 for a first duration T1 if the switch 25 of the second control device 23 is in the "oven operation” position, or the supply of the top heater 4 during the first period T1 if the switch 25 of the second device control 23 is in the "grill operation" position.
  • the third control device 35 includes a fixed thermostat 38 mounted in series with the second timer switch 36 and therefore the setting temperature is higher than the maximum setting temperature of 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 timer switch 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 to the polarity 13 of the power source 7.
  • the setting temperature of the fixed thermostat (35) has a value close to 290 ° C.
  • the fixed thermostat 38 is set to a trigger temperature higher than that of the adjustable thermostat 15, there is no overlapping of the temperature ranges, which allows the third control device 35 to short-circuit the first control device 8 As will be understood, a temperature of the cooking chamber is obtained very quickly, which makes it possible to carry out heating operations of the “snack” type.
  • the second timer switch 36 can occupy a third position also closed, for which the second timer switch 36 activates the supply of the vault and / or floor heating resistors 4 and 5 for a second duration T2 greater than the duration T1.
  • the first duration T1 has a value between 10 and 15 minutes for the treatment of food such as for example pizzas and the second duration T2 has a value in a range between 20 and 30 minutes for the treatment of food such as for example gratins.
  • the user after having checked the position of the second control device 23 in "oven operation", places a food, for example, a pizza, on the intermediate stage 6 and closes the door 3 of the household electrical oven.
  • a food for example, a pizza
  • the food to be treated being a pizza
  • the user manipulates the second control button on a position P1 for which the second timer switch 36 triggers the supply of the top and bottom heating resistors 4 and 5 for the duration T1.
  • the temperature of the cooking chamber rises to a temperature of 280 ° C in about 4 minutes with a total power of the heating resistors of 2,200 W and therefore allows optimal processing of the food.
  • a warning device known per se and connected in the supply device, sends a signal of the end of the heating operation to the user. The user can thus remove the treated food from the cooking chamber.
  • the user After having checked the position of the second control device 23 in "grill operation", places the food in the cooking chamber 2 and manipulates the second button. control on a position P2 for which the second timer switch 36 triggers the supply of the roof resistor 4 for the duration T2.
  • the heating operation thus triggered is the same as that described above.

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

Family

ID=9488521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970400103 Expired - Lifetime EP0786629B1 (de) 1996-01-26 1997-01-20 Stromversorgung von Heizwiderständen für Unter- und Oberhitze an elektrischen Haushaltherden

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287532A4 (de) * 2008-05-16 2014-01-22 Panasonic Corp Hochfrequenzheizvorrichtung mit elektrothermischer heizvorrichtung

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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287532A4 (de) * 2008-05-16 2014-01-22 Panasonic Corp Hochfrequenzheizvorrichtung mit elektrothermischer heizvorrichtung

Also Published As

Publication number Publication date
EP0786629B1 (de) 2003-06-04
ES2200128T3 (es) 2004-03-01
FR2744322A1 (fr) 1997-08-01
DE69722473D1 (de) 2003-07-10
EP0786629A3 (de) 1999-03-03
FR2744322B1 (fr) 1999-12-31
DE69722473T2 (de) 2004-05-06

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