EP0084006B1 - Elektrischer Kochherd - Google Patents

Elektrischer Kochherd Download PDF

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Publication number
EP0084006B1
EP0084006B1 EP19830400030 EP83400030A EP0084006B1 EP 0084006 B1 EP0084006 B1 EP 0084006B1 EP 19830400030 EP19830400030 EP 19830400030 EP 83400030 A EP83400030 A EP 83400030A EP 0084006 B1 EP0084006 B1 EP 0084006B1
Authority
EP
European Patent Office
Prior art keywords
heating element
fan
turbine
oven
muffle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19830400030
Other languages
English (en)
French (fr)
Other versions
EP0084006A1 (de
Inventor
Bernard Logel
Robert Koehl
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.)
De Dietrich et Cie SA
Original Assignee
De Dietrich et Cie 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 De Dietrich et Cie SA filed Critical De Dietrich et Cie SA
Publication of EP0084006A1 publication Critical patent/EP0084006A1/de
Application granted granted Critical
Publication of EP0084006B1 publication Critical patent/EP0084006B1/de
Expired 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
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated

Definitions

  • the present invention relates to domestic electric cooking ovens of the type comprising a muffle in which are mounted at least one vault heating element, at least one hearth heating element, an air circulation turbine provided in the rear wall. muffle, a heating element placed in the air flow stream of the turbine, an air ducting means arranged to direct the air blown by the turbine in roughly horizontal veins in the cavity of the muffle, and an electrical switching device for the selective energization of said heating elements and said turbine.
  • Such ovens have already been described for example in DE-A-2 657 929. Their switching device is arranged. so that the user can place the oven in a first configuration called “conventional”, in which are energized exclusively, the vault and bottom elements and also in a second configuration, in which only the heating element of the turbine and this turbine itself is in action.
  • This second configuration is commonly called “fan heat”.
  • the object of the invention is to provide a domestic cooking oven of the type defined above, but without the abovementioned drawbacks.
  • this oven is characterized in that said switching device comprises a position in which it is able to connect said turbine heating element in series with the roof heating element or elements, while energizing said turbine and said bottom heating element, in parallel with said elements connected in series.
  • the oven can be placed in a so-called mixed configuration in which the hearth heating element operates at full power, while the vault and turbine heating elements consume only a relatively low power, the heat which they generate being conveyed in any ia cavity of the furnace.
  • the dish receives a high amount of heat from below by radiation and convection (for example for cooking a moist pie shell) while the sum of the heat supplied by the other resistances leads to a shorter cooking time than would be necessary in the other configurations of the oven. This therefore not only results in a better culinary result, but also a saving of up to 8% for a moist pastry in comparison with the fan-assisted configuration.
  • FIGs. 1 and 2 there is shown schematically an oven muffle 1 delimiting a cooking cavity 2 which, of course, is closed by a door (not shown) during cooking.
  • a turbine 4 driven by an electric motor 5, the discharge openings of the turbine being surrounded by a turbine resistor 6 formed for example by two coaxial turns.
  • the suction side of the turbine is placed in front of the central opening 7 of an air duct plate 8 in front of which a filter 9 is mounted.
  • the duct plate 8 has discharge orifices 10 at its periphery.
  • Arch heating elements 11 a and 11 b are mounted at the top of the muffle parallel to its arch wall.
  • a temperature sensor 12 controlling a thermostat contact 13 is placed next to the roof resistor 11 b.
  • a hearth heating element 14 or hearth resistance is arranged below the bottom wall of the muffle 1.
  • Contact A is connected to terminal 15 and is connected in series with the rest of the circuit to control power-up or cut-off.
  • the motor 5 of the turbine 4 is connected in series with the contact B between the contact A and the terminal 16.
  • the thermostatic contact 13 reacting to the probe 12 is connected between the contact A and a circuit which includes the heating elements of the oven .
  • the turbine heating element 6 is connected between the thermostatic contact 13 and a junction point 17 to which the grill and arch elements 11 a and 11b are connected in series with the respective contacts D and F, all being connected in parallel to contact E of the switching means.
  • the floor resistor 14 is mounted in series with the contact G between the contact 13 and the terminal 16.
  • FIG. 4 shows that the oven according to the invention can be placed, by means of a simple switching with a single button, not only in the conventional configurations such as “fan heat and” conventional “(positions c and i), but also in a so-called configuration "Mixed during which the oven is heated by the hearth resistance 14 providing a significant amount of heat from the bottom of the muffle and by the series connection of the turbine resistance 6 on the one hand and the parallel connection of the resistors of the vault 11a a and 11b on the other hand, the heat generated of which is conveyed and regularly distributed in the muffle thanks to the rotation of the turbine 4. This is here position d of FIG. 4.
  • the oven according to the invention therefore combines all the advantages of the two conventional cooking methods mentioned above as well as those resulting from the third "mixed" configuration. These particular advantages are in particular a better horizontal distribution of the heat in the oven, the contribution of calories being better distributed in particular by placing the floor resistance in series and paralleling the vault resistors in series with the turbine resistance.
  • Fig. 5 shows by way of comparison two diagrams of the temperature as a function of the time corresponding to the baking of a pastry of the aforementioned kind.
  • Diagram (a) shows the energy expenditure for the "circulating heat” configuration (position c), while diagram (b) shows this expenditure in mixed configuration (position d).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)

Claims (3)

1. Elektrischer Kochherd mit einem Muffelofen (1), in dem folgendes eingebaut ist : wenigstens ein Bodenheizelement (14), eine Luftumwälzturbine (4) im Hinterteil (3) des Muffelofens (1), ein im Luftumwälzstrom der Turbine (4) angeordnetes Heizelement (6), eine Luftkanalisierungseinrichtung zur Ausrichtung der von der Turbine geförderten Luft längs ungefähr waagerechter Strahlen im Hohlraum des Muffelofens (1) und eine elektrische Schaltvorrichtung (A bis G) zum wahlweisen Unterspannungsetzen der Heizelemente und der Turbine, dadurch gekennzeichnet, daß die Schaltvorrichtung (A bis G) eine Stellung (d) aufweist, in der es möglich ist, das Turbinenheizelement (6) in Reihe mit dem oder den Strahlheizelementen (11a, 11b) zu schalten, wobei die Turbine (4) und das Bodenheizelement (14) zu den in Reihe geschalteten Elementen parallel unter Spannung gesetzt sind.
2. Herd nach Anspruch 1, bei dem zwei Strahlheizelemente vorgesehen sind, dadurch gekennzeichnet, daß die Strahlheizelemente (11a, 11b) parallel geschaltet und in der angegebenen Stellung (d) der Schalteinrichtung (A bis G) alle miteinander mit dem Turbinenheizelement (6) in Reihe geschaltet sind.
3. Herd nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Schalteinrichtung (A bis G) eine Stellung (j) aufweist, die zur Reinigung des Muffelofens (1) durch Pyrolyse die Parallelschaltung des Bodenelements (14) und des Strahlheizelements (11a und 11 b) ermöglicht.
EP19830400030 1982-01-06 1983-01-05 Elektrischer Kochherd Expired EP0084006B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8200089 1982-01-06
FR8200089A FR2519413B1 (fr) 1982-01-06 1982-01-06 Four electrique de cuisson domestique

Publications (2)

Publication Number Publication Date
EP0084006A1 EP0084006A1 (de) 1983-07-20
EP0084006B1 true EP0084006B1 (de) 1986-04-16

Family

ID=9269735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830400030 Expired EP0084006B1 (de) 1982-01-06 1983-01-05 Elektrischer Kochherd

Country Status (3)

Country Link
EP (1) EP0084006B1 (de)
DE (1) DE3362968D1 (de)
FR (1) FR2519413B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552531B1 (fr) * 1983-09-23 1986-11-21 Europ Equip Menager Enceinte de cuisson a energie electrique
FR2562991B1 (fr) * 1984-04-11 1986-06-06 Europ Equip Menager Enceinte de cuisson a energie electrique
DE3447481A1 (de) * 1984-12-27 1986-07-03 Küppersbusch AG, 4650 Gelsenkirchen Bratroehre mit selbsttaetiger beseitigung von geruchs- u. verschmutzungsteilchen in der bratroehrenluft
FR2592467B1 (fr) * 1985-04-09 1988-04-29 Europ Equip Menager Enceinte de cuisson a energie electrique
FR2697321B1 (fr) * 1992-10-26 1997-04-25 Moulinex Sa Four électrique de cuisson domestique par gril ou par convection forcée.
DE4319613C1 (de) * 1993-06-14 1994-06-30 Bauknecht Hausgeraete Verfahren zum Betreiben eines Elektrobackofens
DE59302937D1 (de) * 1993-08-23 1996-07-18 Bauknecht Hausgeraete Backofen
DE10151937A1 (de) * 2001-10-22 2003-04-30 Bsh Bosch Siemens Hausgeraete Gargerät mit einer Schnellaufheizeinheit
EP1992879A1 (de) 2007-05-16 2008-11-19 Electrolux Home Products Corporation N.V. Backofen, insbesondere Haushaltsbackofen
KR20090021037A (ko) 2007-08-24 2009-02-27 엘지전자 주식회사 다중 브로일 히터를 구비한 전기 오븐 및 이 전기 오븐의프리히팅 방법
EP2848866B1 (de) * 2013-09-17 2020-02-05 Electrolux Appliances Aktiebolag Back- und/oder Garofen und Verfahren zum Betreiben eines Back- und/oder Garofens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2657929C3 (de) * 1976-12-21 1980-03-20 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen, insbesondere mit Mitteln zur pyrolytischen Selbstreinigung
DE2658686C3 (de) * 1976-12-23 1980-02-07 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen mit einem Umluftgeblase fur die Heißluftumwälzung
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
FR2519413B1 (fr) 1987-05-22
DE3362968D1 (en) 1986-05-22
FR2519413A1 (fr) 1983-07-08
EP0084006A1 (de) 1983-07-20

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