EP0995951A2 - Four de cuisson avec moyens de nettoyage par pyrolyse - Google Patents

Four de cuisson avec moyens de nettoyage par pyrolyse Download PDF

Info

Publication number: EP0995951A2
Authority: EP; European Patent Office
Prior art keywords: oven; heating element; muffle; bottom wall; wall
Prior art date: 1998-10-23
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

EP99120167A

Other languages

German (de)

English (en)

Other versions

EP0995951A3 (fr

EP0995951B1 (fr

Inventor

Josef Gerl

Bernd Hopfenmüller

Helmut Knoll

Christian Zimmermann

Hans Lappat

Klemens Roch

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.)

BSH Hausgeraete GmbH

Original Assignee

BSH Bosch und Siemens Hausgeraete GmbH

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.)

1998-10-23

Filing date

1999-10-08

Publication date

2000-04-26

1999-10-08 Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH

2000-04-26 Publication of EP0995951A2 publication Critical patent/EP0995951A2/fr

2001-07-04 Publication of EP0995951A3 publication Critical patent/EP0995951A3/fr

2004-07-21 Application granted granted Critical

2004-07-21 Publication of EP0995951B1 publication Critical patent/EP0995951B1/fr

2019-10-08 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- F24C7/06—Arrangement or mounting of electric heating elements
- 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
- F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
- F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type

Definitions

the present invention relates to an oven with means for pyrolytic self-cleaning with a lockable by a door and limited by an oven muffle Cooking space, with one arranged below the top wall of the muffle in the cooking space first heating element and a second heating element assigned to the bottom wall, the Heating power in pyrolysis mode is significantly greater than that of the first heating element.
Such an oven is known from the publication US 3,668,371, in which Cooking space below the top wall and above the bottom wall of the muffle Tubular heating element is provided for cooking. In self-cleaning mode, that will be first heating element disconnected from the mains, while the second heating element on mains voltage is laid.
the focus of the oven muffle is about a temperature 320 ° C in contrast to that normally achieved in pyrolysis operation Center of gravity temperature of 450 ° C.
Center of gravity temperature Center of gravity temperature of 450 ° C.
the with the according to the publication US 3,668,371 significantly reduced center of gravity associated relatively low Muffle wall temperatures are, however, in the area of the less soiled muffle side walls and cover wall large enough for cleaning.
the object of the present invention is in an oven according to the preamble of claim 1 to facilitate cleanability.
the bottom wall is advantageously about 0.5 mm thick.
the bottom wall By forming the bottom wall as a separate part, it is possible to have a smaller wall thickness than that of the oven muffle to choose to use a different material or to use the floor pan special dirt-repellent layers. Due to the low heat capacity the bottom wall, the power requirement in pyrolysis operation is further reduced is the energy requirement for a cooking process, which also includes the second heating element is switched on, reduced compared to thicker bottom wall thicknesses.
the oven muffle has a closed one Floor
the second heating element is arranged above the floor, and is above the second heating element, the bottom wall in the form of a particular from the Muffle removable floor plate arranged.
the closed bottom of the oven muffle guarantees that the cooking space is completely sealed bottom as well as additional thermal insulation with respect to the radiated down Heat radiation from the second heating element.
a removable floor panel offers also advantages when cleaning the oven.
the second heating element from the bottom of the oven muffle is slight spaced.
the arrangement of a reflector element between serves the same purpose the second heating element and the bottom of the oven muffle. In both cases Heating up the oven muffle base and transferring the heat to the others Walls of the oven muffle significantly reduced.
the thermal coupling of the second Heating element on the floor panel or on the floor wall can be improved be that both are thermally conductively connected.
the heating element is implemented directly on the floor panel using thick-film technology, for example his.
the Bottom wall essentially via point or line-shaped contact points in the Oven muffle held.
the drainage in the floor wall or in the floor panel Heat absorbed into the walls of the oven muffle can be avoided by this measure be significantly reduced.
At least partial areas of the side walls or the top wall of the Oven muffle have a catalytic coating.
these areas of the muffle wall with a special easy to clean layer are coated. This can be done, for example, through special Enamel or sol-gel layers can be realized.
an oven has a housing 1 in which a cuboid oven muffle 3 defining a cooking space is held (FIG. 1). This is open on the front and with one articulated on the housing 1 or the muffle 3 Oven door 5 lockable.
the oven muffle 3 has a heat insulation layer on all sides 7 surrounded.
Here is the amount of insulation material or the requirement to the insulation properties of the heat insulation layer 7 due to the pyrolysis operation occurring low operating temperatures, as explained below, in comparison compared to conventional ovens with an external bottom heat radiator reduced.
Below the ceiling of the oven muffle 3 is an upper heat radiator 9 and Above the oven base 12 there is a lower heat radiator 11 at a distance from it supported.
the top of the oven bottom 12 is the heat radiation of the Underheating radiator 11 reflective metal layer 13 covered.
the reflective property also by a suitable inserted in the oven muffle 3 Reflector plate can be realized.
the distance between the lower heat radiator 11 and the oven floor 12 or the reflector layer 13 is over their entire Area at least a few mm.
the oven base 12 has embossments distributed over its surface, on which the Lower heat radiator 11 rests essentially at a point.
the bottom heat radiator 11 or the oven base 12 can be removed completely by a in the oven muffle 3 covered bottom plate 15 covered.
the wall thickness the bottom plate 15 is about 0.4-0.5 mm.
the bottom plate 15 can both on the Be held inside the oven door 5, especially if it is in the form of a known baking cart is formed, can on the side walls or the rear wall the oven muffle 3 can be held in known groove baking tubes or in a special provided in the oven muffle 3 known food support frame or be held in the muffle side walls of the guide grids.
the base plate 15 not to be removable from the oven muffle 3 to attach.
the bottom plate 15 has the smoothest possible surface contour to make it easier to wipe out pyrolysis residues.
a food support 17 can be held in the oven muffle 3 at different heights.
a control unit 21 can be used to operate the oven by means of an operating unit 19 Pyrolysis or cooking mode request can be communicated.
the control unit 19 Pyrolysis or cooking mode request can be communicated.
the control unit 19 the control unit 21, the radiators 9, 11 and other functional elements known per se ovens, such as a cooking space temperature sensor, via connecting lines 23 connected.
the lower heat radiator 11 is due to the thin bottom plate 15 shielded from the food.
the extent of thermal shielding is, however, less than in the case of the known arrangement of a bottom heat radiator outside the oven muffle 3 below the oven base 12.
the control unit 21 switches the top heat radiator 9 off and operates it the bottom heat radiator 11 at full power. This results in heating the bottom plate 15 to about 500 ° C, while the oven's center of gravity remains below 350 ° C.
the primary contamination area of the oven muffle 3, namely the bottom plate 15 is cleaned pyrolytically. Due to the low thermal Mass of the bottom plate 15, the poor thermal coupling to the Walls of the oven muffle 3 or the arrangement of the reflector layer 13 is thereby electrical energy saved.
a baking oven according to the second embodiment is trough-shaped Base plate 15 on its underside with a serving as a bottom heat radiator 11 Provide tubular heater. This is via plug connections not shown in the Area of the rear wall of the oven muffle 3 electrically contactable. If this connector is designed to be sufficiently stable, it can be used to hold the lower heat body alone be used in the oven muffle.
this connector In the side walls of the oven muffle 3 formed horizontal guide grooves 31 is shown in FIG. 2 the bottom plate 15 can be inserted stably at a distance from the reflector layer 13. The end section of an unflared side wall region 33 of the base plate rests 15 linearly on a guide surface of the groove 31.
the control unit 21 detects the presence of the lower heat radiator 11 or its ohmic resistance and thus the bottom plate 15 in the oven muffle 3. A cooking or pyrolysis operation only possible when the control unit 21 determines the presence of the floor plate 15. Due to the shielding of the lower heat radiator 11 by the thin and thermal bottom plate 15 weakly coupled to the oven muffle walls can large temperature differences between the primary pollution area in a particularly simple manner - The floor panel - and the secondary pollution areas - the Top and side walls - can be adjusted. In addition, the leads in particular weak thermal coupling of the bottom plate 15 to the walls of the oven muffle 3 low energy consumption in pyrolysis operation. During pyrolysis operation a circulating air fan, not shown, remains essentially switched off.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Baking, Grill, Roasting (AREA)
Electric Stoves And Ranges (AREA)
Physical Vapour Deposition (AREA)

EP99120167A 1998-10-23 1999-10-08 Four de cuisson avec moyens de nettoyage par pyrolyse Expired - Lifetime EP0995951B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19849040A DE19849040A1 (de)	1998-10-23	1998-10-23	Backofen mit Mitteln zur pyrolytischen Selbstreinigung
DE19849040		1998-10-23

Publications (3)

Publication Number	Publication Date
EP0995951A2 true EP0995951A2 (fr)	2000-04-26
EP0995951A3 EP0995951A3 (fr)	2001-07-04
EP0995951B1 EP0995951B1 (fr)	2004-07-21

Family

ID=7885489

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99120167A Expired - Lifetime EP0995951B1 (fr)	1998-10-23	1999-10-08	Four de cuisson avec moyens de nettoyage par pyrolyse

Country Status (3)

Country	Link
EP (1)	EP0995951B1 (fr)
AT (1)	ATE271675T1 (fr)
DE (2)	DE19849040A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10349312A1 (de) *	2003-10-23	2005-05-25	BSH Bosch und Siemens Hausgeräte GmbH	Verfahren und Backofen zur pyrolytischen Selbstreinigung einer Backofenmuffel
WO2009083390A1 (fr) *	2007-12-31	2009-07-09	Arcelik Anonim Sirketi	Four
DE102013209707A1 (de) *	2013-05-24	2014-11-27	BSH Bosch und Siemens Hausgeräte GmbH	Küchengeräte mit leicht reinigbaren oberflächen und verfahren zu deren aufbringung
EP2746677A3 (fr) *	2012-12-20	2016-12-14	BSH Hausgeräte GmbH	Appareil de cuisson
DE102017211289A1 (de)	2017-07-03	2019-01-03	BSH Hausgeräte GmbH	Koch-, Brat-, Back- oder Grillgerät mit funktioneller Beschichtung, sowie Verfahren zur Erneuerung der Beschichtung
EP3099980B1 (fr)	2014-01-30	2020-08-26	BSH Hausgeräte GmbH	Tube de cuisson

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES2390172B1 (es)	2010-01-29	2013-09-17	Fagor, S. Coop.	Horno pirolítico, preferentemente doméstico.
DE102011010283A1 (de)	2011-02-03	2012-08-09	i-clean Technologies GmbH	Verfahren zur Reinigung eines Haushalts-Gargerätes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3353004A (en) *	1964-10-09	1967-11-14	Gen Motors Corp	Domestic electric appliance
US3530847A (en) *	1968-04-02	1970-09-29	Caloric Corp	Gas-fueled self-cleaning oven
US3668371A (en) *	1971-06-16	1972-06-06	Gen Motors Corp	Circuit arrangement for accelerated continuous cleaning of self cleaning oven coatings
FR2238119B2 (fr) *	1973-07-17	1976-04-30	Cepem
NO770418L (no) *	1976-02-13	1977-08-16	Witte & Co Stephan	Mikrob¦lgekomfyr.
US5038748A (en) *	1990-08-30	1991-08-13	General Electric Company	Self-cleaning gas range having heat baffle assembly
US5387258A (en) *	1991-12-30	1995-02-07	Fulgor S.P.A.	Self-cleaning oven

1998
- 1998-10-23 DE DE19849040A patent/DE19849040A1/de not_active Withdrawn
1999
- 1999-10-08 DE DE59909999T patent/DE59909999D1/de not_active Expired - Fee Related
- 1999-10-08 EP EP99120167A patent/EP0995951B1/fr not_active Expired - Lifetime
- 1999-10-08 AT AT99120167T patent/ATE271675T1/de not_active IP Right Cessation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10349312A1 (de) *	2003-10-23	2005-05-25	BSH Bosch und Siemens Hausgeräte GmbH	Verfahren und Backofen zur pyrolytischen Selbstreinigung einer Backofenmuffel
WO2009083390A1 (fr) *	2007-12-31	2009-07-09	Arcelik Anonim Sirketi	Four
EP2746677A3 (fr) *	2012-12-20	2016-12-14	BSH Hausgeräte GmbH	Appareil de cuisson
DE102013209707A1 (de) *	2013-05-24	2014-11-27	BSH Bosch und Siemens Hausgeräte GmbH	Küchengeräte mit leicht reinigbaren oberflächen und verfahren zu deren aufbringung
EP3099980B1 (fr)	2014-01-30	2020-08-26	BSH Hausgeräte GmbH	Tube de cuisson
EP3099980B2 (fr) †	2014-01-30	2023-06-28	BSH Hausgeräte GmbH	Tube de cuisson
DE102017211289A1 (de)	2017-07-03	2019-01-03	BSH Hausgeräte GmbH	Koch-, Brat-, Back- oder Grillgerät mit funktioneller Beschichtung, sowie Verfahren zur Erneuerung der Beschichtung

Also Published As

Publication number	Publication date
ATE271675T1 (de)	2004-08-15
DE19849040A1 (de)	2000-04-27
DE59909999D1 (de)	2004-08-26
EP0995951A3 (fr)	2001-07-04
EP0995951B1 (fr)	2004-07-21

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2001-07-04	RTI1	Title (correction)	Free format text: BAKING OVEN WITH MEANS FOR PYROLITIC SELF-CLEANING
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