EP1064502A1 - Backofen mit backofenmuffel - Google Patents
Backofen mit backofenmuffelInfo
- Publication number
- EP1064502A1 EP1064502A1 EP99917868A EP99917868A EP1064502A1 EP 1064502 A1 EP1064502 A1 EP 1064502A1 EP 99917868 A EP99917868 A EP 99917868A EP 99917868 A EP99917868 A EP 99917868A EP 1064502 A1 EP1064502 A1 EP 1064502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- muffle
- oven
- protective layer
- layer
- sol
- 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
Links
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
- F24C15/00—Details
- F24C15/005—Coatings for ovens
Definitions
- the present invention relates to an oven with a metallic oven muffle that can be closed at the front by a door, the muffle walls of which are associated with heating elements for heating the cooking space to above about 180 ° C. or the items to be cooked therein, with a protective layer covering the muffle walls at least on the inside .
- Such an oven is generally known, the oven muffle being provided with an enamel layer.
- the enamel coating serves on the one hand as an anti-corrosion layer and on the other hand as an anti-oxidation layer. Furthermore, the enamel layer improves the cleanability of the oven muffle and increases the surface hardness. Finally, the look of the oven muffle is determined by the enamel.
- the object of the present invention is therefore to improve the performance properties of the oven muffle in an oven according to the preamble of claim 1.
- the thickness of the protective layer is less than about 30 microns, in particular less than 20 microns and preferably between about 5 and 10 microns.
- the thickness of the protective layer is less than about 30 microns, in particular less than 20 microns and preferably between about 5 and 10 microns.
- the sol-gel layer can, for example, be applied to the muffle walls in a simple immersion process.
- the low baking temperatures of about 450 to 500 ° C. are favorable in the sol-gel technique compared to the enamel technique.
- the applied sol-gel layers are also suitable for the temperatures typical for cooking processes.
- the hard layer preferably has a thickness of 5 to 10 ⁇ m.
- a sol-gel functional layer is provided on the hard sol-gel layer.
- Different areas of the muffle walls can be equipped with special properties. These properties can be, for example, a particularly simple cleanability, a special sliding behavior or catalytic properties.
- the functional layer is advantageously implemented as a layer approximately 10 ⁇ m, in particular approximately 2 to 3 ⁇ m thick. Due to the sol-gel technology, the applied layers, despite their small thickness, have great stability and great adhesion both on top of one another and on the metal.
- the protective layer is transparent and the inside of the muffle wall serves as a reflector. This is particularly advantageous when cooking with the help of heat radiation in the infrared range or in the visible light range.
- Such transparent layers can be easily represented as sol-gel layers.
- the protective layer can be realized as an anodized, in particular hard anodized, aluminum oxide layer.
- This oxide layer is particularly characterized by its excellent hardness and smoothness.
- a particularly good heat transfer from the heating element to the muffle wall or to the cooking space and an excellent heat distribution in this respect can be achieved in that the muffle wall has an insulating protective layer in the ⁇ m range to which the heating element is applied directly by means of thick-film technology.
- the heating element can also be implemented using more complex coating processes, for example thin-film technology. Due to the thin protective layers, only slight stresses occur in the oven muffle when the oven muffle is heated up, despite the different thermal expansion coefficients of the protective layer and the muffle wall. The thickness of the muffle wall can therefore also be reduced to, for example, approximately 0.4 mm.
- the oven muffle is supported from the outside by a stabilizing frame. This is particularly important if the thickness of the muffle wall is only about 0.3 to 0.5 mm. This almost halving the wall thickness of the oven muffle compared to the previously known prior art further improves the heating-up times and the heat distribution. In addition, material can be saved due to the low material thickness. In addition, the weight of the oven muffle is significantly reduced.
- the stabilizing frame is essentially formed by oven insulation. On the one hand, this must be sufficiently flexible to be able to participate in the spatial enlargement of the oven muffle when heating up, and on the other hand it must be stiff enough to be able to sufficiently stabilize the thin-walled oven muffle.
- Fig. 4 in perspective views from the front of the oven muffle after various process steps for its manufacture.
- Fig. 1 shows a rectangular oven muffle 1 made of stainless steel with five muffle walls 3. These are the two side walls, a bottom and a top wall and a rear wall.
- the loading opening of the oven muffle 1 moves around a muffle flange 5.
- the oven muffle 1 is produced in one piece using a hydroforming process. In this deep-drawing process, in contrast to conventional mechanically deep-drawn parts, the oven muffle does not have defects such as uneven and large changes in wall thickness, visible traces of drawing and a bead, as well as reduced surface quality and reduced shape accuracy.
- sol-gel technology a muffle inside 7 and a muffle outside 9 are coated with a sol-gel layer 11 in a dipping or spraying process (FIG. 2).
- a solution becomes a colloid by controlled condensation methods System created on the micrometer scale (gel).
- This gel is compressed by drying as a result of solvent removal and then cured in a suitable manner or baked at a temperature of about 450 to 500 ° C.
- the sol-gel layer is particularly firmly bonded to the substrate via chemical compounds.
- the resulting sol-gel layer is about 10 ⁇ m thick and forms a hard surface with electrical insulation properties on both sides of the stainless steel muffle wall 3. Furthermore, it forms a tarnish and oxidation protection for the stainless steel.
- functional layers are applied to the sol-gel hard layer on different areas of the inside of the socket 7.
- the sol-gel functional layers in particular provide non-stick, sliding and catalytic properties.
- the sol-gel functional layers have a thickness of approximately 3 ⁇ m.
- the protective layer formed from the two sol-gel layers 11 is so transparent that the heat radiation relevant to the preparation of food can penetrate the protective layer in the infrared or visible light range and can be optimally reflected by the stainless steel surface into the interior of the muffle (Fig . 2). If necessary, a transparent or opaque coloring of the layers is also possible.
- heating conductors 13 are applied to the sol-gel hard layer on the muffle outside using thick-film technology (FIG. 3). Due to the particularly thin insulation layer between the heating conductor 13 and the muffle wall 3, a particularly favorable and uniform heat transfer is possible.
- the heating conductors 13 can be supplied with electrical voltage via conductor connections 15.
- the oven muffle 1 is finally in a muffle insulation 17 made of fiber-free insulation material, e.g. Perlite, embedded.
- the oven jacket 1 the wall thickness of which is only 0.4 mm, is stabilized by the insulation jacket.
- the insulation shell 17 is designed to be sufficiently flexible so that it does not tear during the thermal expansion of the oven muffle 1 during heating during a baking process.
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Baking, Grill, Roasting (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Cookers (AREA)
- Electric Stoves And Ranges (AREA)
- Special Wing (AREA)
- Electric Ovens (AREA)
- Meat, Egg Or Seafood Products (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02017745A EP1255083B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit Backofenmuffel |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813787A DE19813787A1 (de) | 1998-03-27 | 1998-03-27 | Backofen mit Backofenmuffel |
DE19813787 | 1998-03-27 | ||
PCT/EP1999/002061 WO1999050601A1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017745A Division EP1255083B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit Backofenmuffel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1064502A1 true EP1064502A1 (de) | 2001-01-03 |
EP1064502B1 EP1064502B1 (de) | 2003-02-19 |
Family
ID=7862695
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99917868A Revoked EP1064502B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
EP02017745A Expired - Lifetime EP1255083B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit Backofenmuffel |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017745A Expired - Lifetime EP1255083B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit Backofenmuffel |
Country Status (10)
Country | Link |
---|---|
US (1) | US6392203B1 (de) |
EP (2) | EP1064502B1 (de) |
JP (1) | JP2002510029A (de) |
KR (1) | KR20010034651A (de) |
AT (1) | ATE232952T1 (de) |
DE (3) | DE19813787A1 (de) |
ES (2) | ES2193696T3 (de) |
PL (1) | PL343159A1 (de) |
TR (1) | TR200002585T2 (de) |
WO (1) | WO1999050601A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3381154B2 (ja) * | 2000-02-25 | 2003-02-24 | 修 山崎 | 茹で卵様食品の製造装置 |
EP1382226B1 (de) * | 2001-04-17 | 2005-11-23 | Koninklijke Philips Electronics N.V. | Isolierende schicht für ein heizelement |
DE20107564U1 (de) | 2001-05-03 | 2001-08-16 | Mapa GmbH Gummi- und Plastikwerke, 27404 Zeven | Vorrichtung zum Erwärmen von Nahrung |
DE10247192B4 (de) | 2002-10-10 | 2018-11-22 | BSH Hausgeräte GmbH | Auszugsvorrichtung für ein Haushaltsgerät |
US20030138661A1 (en) * | 2003-02-19 | 2003-07-24 | Ferro Corporation | Sol-gel composition and method of making same |
US20050047584A1 (en) * | 2003-08-26 | 2005-03-03 | Capital One Financial Corporation | System and method for customized intelligent contact routing |
US7132628B2 (en) * | 2004-03-10 | 2006-11-07 | Watlow Electric Manufacturing Company | Variable watt density layered heater |
USD569491S1 (en) | 2007-07-02 | 2008-05-20 | Saint-Gobain Ceramics & Plastics, Inc. | Interconnecting muffle |
ITPD20070420A1 (it) * | 2007-12-20 | 2009-06-21 | Unox S R L | Struttura di forno a muffola, particolarmente per la cottura di prodotti alimentari |
DE102008025886A1 (de) * | 2008-05-29 | 2009-12-03 | Schott Ag | Backofenmuffel |
EP2405204B1 (de) * | 2010-07-09 | 2017-10-11 | Electrolux Home Products Corporation N.V. | Frontrahmen für einen Ofeninnenraum eines Backofens |
DE102010063510A1 (de) * | 2010-12-20 | 2012-06-21 | BSH Bosch und Siemens Hausgeräte GmbH | Gargerät |
ES2385156B1 (es) * | 2010-12-22 | 2013-05-24 | BSH Electrodomésticos España S.A. | Soporte de producto de cocción. |
ES2385155B1 (es) | 2010-12-22 | 2013-05-24 | BSH Electrodomésticos España S.A. | Mufla de cocción. |
DE102014201639A1 (de) * | 2014-01-30 | 2015-07-30 | BSH Hausgeräte GmbH | Backrohr |
DE102015224800A1 (de) | 2015-12-10 | 2017-06-14 | BSH Hausgeräte GmbH | Muffel und Haushaltsgargerät |
DE102017223680A1 (de) * | 2017-12-22 | 2019-06-27 | BSH Hausgeräte GmbH | Gegenstand mit einer hochtemperaturbeständigen omniphoben Antihaftbeschichtung, sowie Verfahren zur Herstellung des Gegenstands |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537433A (en) * | 1945-10-12 | 1951-01-09 | Gen Motors Corp | Impregnated aluminum oven liner |
US3816702A (en) * | 1972-06-26 | 1974-06-11 | R Green | Electronic isothermal device |
US3979575A (en) * | 1975-05-29 | 1976-09-07 | M & M Enterprises, Inc. | Portable electric oven |
US4298789A (en) * | 1980-03-24 | 1981-11-03 | General Electric Company | Oven having a cavity heated by at least one monolithic integrated heat source |
JPS57120033A (en) * | 1981-01-19 | 1982-07-26 | Mitsubishi Electric Corp | Inner wall of cooking range |
DE3302794A1 (de) * | 1983-01-28 | 1984-08-02 | Miele & Cie GmbH & Co, 4830 Gütersloh | Backmuffel fuer einen elektroherd |
CA1247685A (en) * | 1985-04-17 | 1988-12-28 | Kazumi Hirai | Heat cooking apparatus |
DE8622874U1 (de) * | 1986-08-26 | 1987-02-05 | Breust, Jan-Uwe, 2223 Meldorf | Backofen-Einschub |
JPH0637981B2 (ja) * | 1987-06-12 | 1994-05-18 | シャープ株式会社 | 電子レンジ |
JP2912509B2 (ja) * | 1992-11-13 | 1999-06-28 | シャープ株式会社 | 高温加熱用調理機器の調理面構造およびその製造方法 |
US5616266A (en) * | 1994-07-29 | 1997-04-01 | Thermal Dynamics U.S.A. Ltd. Co. | Resistance heating element with large area, thin film and method |
JP3529438B2 (ja) * | 1994-08-31 | 2004-05-24 | シャープ株式会社 | 高温加熱用調理機器の調理面構造およびその製造方法 |
US6054227A (en) * | 1997-03-14 | 2000-04-25 | Ppg Industries Ohio, Inc. | Photocatalytically-activated self-cleaning appliances |
JPH11118078A (ja) * | 1997-10-20 | 1999-04-30 | Toyo Tire & Rubber Co Ltd | 樹脂管用可とう継手 |
DE19813786C2 (de) * | 1998-03-27 | 2000-04-27 | Bsh Bosch Siemens Hausgeraete | Backofen mit einstückiger Backofenmuffel |
DE19822033A1 (de) * | 1998-05-15 | 1999-11-18 | Bsh Bosch Siemens Hausgeraete | Dickschichtsubstanz und Verfahren zum Herstellen einer Struktur aus einer Dickschichtsubstanz |
-
1998
- 1998-03-27 DE DE19813787A patent/DE19813787A1/de not_active Withdrawn
-
1999
- 1999-03-26 WO PCT/EP1999/002061 patent/WO1999050601A1/de not_active Application Discontinuation
- 1999-03-26 DE DE59904331T patent/DE59904331D1/de not_active Revoked
- 1999-03-26 JP JP2000541465A patent/JP2002510029A/ja active Pending
- 1999-03-26 EP EP99917868A patent/EP1064502B1/de not_active Revoked
- 1999-03-26 KR KR1020007010578A patent/KR20010034651A/ko not_active Application Discontinuation
- 1999-03-26 ES ES99917868T patent/ES2193696T3/es not_active Expired - Lifetime
- 1999-03-26 DE DE59911624T patent/DE59911624D1/de not_active Expired - Lifetime
- 1999-03-26 TR TR2000/02585T patent/TR200002585T2/xx unknown
- 1999-03-26 AT AT99917868T patent/ATE232952T1/de not_active IP Right Cessation
- 1999-03-26 PL PL99343159A patent/PL343159A1/xx not_active IP Right Cessation
- 1999-03-26 EP EP02017745A patent/EP1255083B1/de not_active Expired - Lifetime
- 1999-03-26 ES ES02017745T patent/ES2237637T3/es not_active Expired - Lifetime
-
2000
- 2000-09-27 US US09/671,826 patent/US6392203B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9950601A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6392203B1 (en) | 2002-05-21 |
ES2193696T3 (es) | 2003-11-01 |
DE59911624D1 (de) | 2005-03-17 |
EP1255083A1 (de) | 2002-11-06 |
WO1999050601A1 (de) | 1999-10-07 |
ATE232952T1 (de) | 2003-03-15 |
PL343159A1 (en) | 2001-07-30 |
KR20010034651A (ko) | 2001-04-25 |
EP1255083B1 (de) | 2005-02-09 |
TR200002585T2 (tr) | 2000-11-21 |
DE59904331D1 (de) | 2003-03-27 |
JP2002510029A (ja) | 2002-04-02 |
EP1064502B1 (de) | 2003-02-19 |
DE19813787A1 (de) | 1999-09-30 |
ES2237637T3 (es) | 2005-08-01 |
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