EP1255083B1 - Backofen mit Backofenmuffel - Google Patents
Backofen mit Backofenmuffel Download PDFInfo
- Publication number
- EP1255083B1 EP1255083B1 EP02017745A EP02017745A EP1255083B1 EP 1255083 B1 EP1255083 B1 EP 1255083B1 EP 02017745 A EP02017745 A EP 02017745A EP 02017745 A EP02017745 A EP 02017745A EP 1255083 B1 EP1255083 B1 EP 1255083B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- baking oven
- muffle
- sol
- protective layer
- gel
- 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
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
- F24C15/00—Details
- F24C15/005—Coatings for ovens
Definitions
- the present invention relates to a baking oven according to the preamble of the claim 1, as known from JP-A-57120033.
- the oven muffle with an enamel layer is provided.
- the enamel coating serves as an anti-corrosion layer and on the other hand as an antioxidant layer.
- Last the appearance of the oven muffle is determined by the enamel.
- Object of the present invention is therefore, in an oven according to the preamble of claim 1, the performance characteristics of the oven muffle improve.
- the protective layer is realized as a sol-gel hard layer.
- a sol-gel functional layer is provided which provides different areas of the muffle walls with special properties. These properties may be, for example, a particularly simple cleanability, a special sliding behavior or catalytic properties.
- the functional layer is realized as a layer about 10 ⁇ m, in particular about 2 to 3 ⁇ m thick. Due to the sol-gel technique, the deposited layers, despite their small thickness both on each other and on the metal have a high stability and a high adhesion.
- the thickness of the protective layer is less than about 30 microns, especially less than 20 microns and more preferably between about 5 and 10 microns. Due to the low layer thickness occur in the muffle wall only low voltages. Furthermore, a very good heat conduction from the heating elements or the muffle wall to the muffle interior is ensured and a low susceptibility to cracking of the protective layer or a low probability of chipping is realized.
- This thin protective layer provides adequate corrosion and oxidation protection as well as hard surface protection for the metal.
- Such thin protective layers can procedurally simple, preferably in Sol-gel technology be realized.
- the sol-gel layer is for example in a simple Dipping method applied to the muffle walls.
- the low stoving temperatures compared to the enamelling technique from about 450 to 500 ° C low.
- the applied sol-gel layers are for the during cooking typical temperatures suitable.
- the hard layer preferably has a thickness of 5 to 10 microns.
- the protective layer is transparent and serves the inside of the muffle wall as a reflector. This is particularly favorable when cooked with the help of heat radiation in the infrared range or in the visible light range becomes.
- Such transparent layers can be easily displayed as sol-gel layers.
- the protective layer may be anodised, in particular be realized hard anodized aluminum oxide.
- This oxide layer is characterized in particular by its excellent hardness and smoothness.
- the muffle wall has an insulating protective layer in the micron range, on which the heating element is applied directly by means of thick film technology.
- the heating element also with more complex coating processes, for example thin-film technology, be realized.
- the strength can be the muffle wall can also be reduced to, for example, about 0.4 mm.
- the baking oven muffle is provided by a stabilizing frame supported from the outside. This is especially important when the thickness the muffle wall is only about 0.3 to 0.5 mm. By this almost halving the Wall thickness of the oven muffle compared to the previously known prior art the heating times and the heat distribution will be significantly improved. moreover can be saved by the low material thickness material. Besides, that will Weight of oven muffle significantly reduced.
- Fig. 1 shows a cuboid 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 Back wall.
- the feed opening of the oven muffle 1 moves around a muffle flange 5.
- the oven muffle 1 is made in one piece in a hydroforming process. at This deep-drawing process, the oven muffle, in contrast to conventional mechanically deep-drawn parts defects, such as uneven and large changes in wall thickness, visible drawing marks and a drawing bead, as well as diminished Surface quality and reduced dimensional accuracy not on.
- sol-gel technology Be in a dipping or spraying a muffle inside 7 and a muffle outside 9 coated with a sol-gel layer 11 (Fig. 2).
- sol-gel a colloidal system generated in micrometer scale (gel).
- This gel is caused by drying Solvent removal compressed and then cured in a suitable manner or baked at a temperature of about 450 to 500 ° C.
- the sol-gel layer is chemically bonded to the substrate especially tightly connected.
- the resulting sol-gel layer is about 10 microns thick and forms on the muffle wall 3 made of stainless steel on both sides a hard surface with electrical Insulating properties. Furthermore, it forms a tarnish and oxidation protection for the stainless steel.
- On the sol-gel hard layer are in at least one other Process step in sol-gel technique Functional layers on different areas of the Muffelinnenseite 7 applied.
- the sol-gel functional layers have a thickness of about 3 microns.
- the protective layer formed from the two sol-gel layers 11 is such transparent, that the heat radiation relevant for food preparation in the infrared or in the visible light range, the protective layer can penetrate and of the Stainless steel surface can be optimally reflected into the muffle interior (Fig. 2). If necessary is also a transparent or opaque coloring of the layers possible.
- the sol-gel hard layer are in a subsequent step on the Muffle outside 9 meander-shaped heating conductor 13 applied in thick film technology (Fig. 3). Due to the particularly thin insulating layer between the heating 13th and the muffle wall 3 is a particularly favorable and uniform heat transfer possible.
- the heating conductors 13 can be connected via conductor terminals 15 with electrical voltage be supplied.
- the oven muffle 1 is finally in a muffle insulation 17 of fiber-free Insulation material, e.g. Perlite, embedded.
- a muffle insulation 17 of fiber-free Insulation material e.g. Perlite
- the oven muffle 1 whose wall thickness is only 0.4 mm, stabilized.
- the Insulation shell 17 designed sufficiently resilient to thermal expansion the oven muffle 1 during heating during a baking process not to break.
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)
- Electric Stoves And Ranges (AREA)
- Cookers (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Electric Ovens (AREA)
- Special Wing (AREA)
Description
Die Stärke der Schutzschicht ist geringer als etwa 30 µm, insbesondere geringer als 20 µm und bevorzugter Weise zwischen etwa 5 und 10 µm ist. Infolge der geringen Schichtstärke treten in der Muffelwand nur geringe Spannungen auf. Weiterhin ist eine sehr gute Wärmeleitung von den Heizelementen bzw. der Muffelwand zum Muffelinneren sichergestellt und ist eine geringe Rißanfälligkeit der Schutzschicht bzw. eine geringe Wahrscheinlichkeit von Abplatzem realisiert. Diese dünne Schutzschicht stellt einen ausreichenden Korrosions- und Oxidationsschutz sowie einen harten Oberflächenschutz für das Metall dar.
- Fig. 1 bis Fig. 4
- in perspektivischen Ansichten von vorne die Backofenmuffel nach verschiedenen Verfahrensschritten zu deren Herstellung.
Claims (5)
- Backofen mit einer frontseitig durch eine Tür verschließbaren metallischen Backofenmuffel, deren Muffelwände Heizelemente zum Beheizen des Garraumes auf über etwa 180 °C bzw. des darin angeordneten Gargutes zugeordnet sind, mit einer die Muffelwände zumindest an der Innenseite bedeckenden Schutzschicht, wobei die Stärke der Schutzschicht (11) geringer als etwa 30 µm ist, dadurch gekennzeichnet, dass die Schutzschicht als Sol-Gel-Hartschicht (11) realisiert ist, und dass auf der Sol-Gel-Hartschicht eine Sol-Gel-Funktionalschicht (11) vorgesehen ist, die verschiedene Bereiche der Muffelwände mit besonderen Eigenschaften ausstattet.
- Backofen nach Anspruch 1, dadurch gekennzeichnet, dass unterschiedliche Flächenbereiche der Muffelwände (3) unterschiedliche Funktionalschichten aufweisen.
- Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Muffelwand zumindest zum Teil eine isolierende Schutzschicht aufweist, auf der das Heizelement (13) mittels Dickschichttechnik aufgebracht ist.
- Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Stabilisierungsrahmen die Backofenmuffel (1) von außen stützt, und dass der Stabilisierungsrahmen im wesentlichen durch eine Backofenmuffelisolation (17) gebildet ist.
- Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dicke der Muffelwand (3) etwa 0,3 bis 0,5 mm beträgt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813787 | 1998-03-27 | ||
DE19813787A DE19813787A1 (de) | 1998-03-27 | 1998-03-27 | Backofen mit Backofenmuffel |
EP99917868A EP1064502B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99917868A Division EP1064502B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1255083A1 EP1255083A1 (de) | 2002-11-06 |
EP1255083B1 true EP1255083B1 (de) | 2005-02-09 |
Family
ID=7862695
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017745A Expired - Lifetime EP1255083B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit Backofenmuffel |
EP99917868A Revoked EP1064502B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99917868A Revoked EP1064502B1 (de) | 1998-03-27 | 1999-03-26 | Backofen mit backofenmuffel |
Country Status (10)
Country | Link |
---|---|
US (1) | US6392203B1 (de) |
EP (2) | EP1255083B1 (de) |
JP (1) | JP2002510029A (de) |
KR (1) | KR20010034651A (de) |
AT (1) | ATE232952T1 (de) |
DE (3) | DE19813787A1 (de) |
ES (2) | ES2237637T3 (de) |
PL (1) | PL343159A1 (de) |
TR (1) | TR200002585T2 (de) |
WO (1) | WO1999050601A1 (de) |
Families Citing this family (16)
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 |
ATE311084T1 (de) * | 2001-04-17 | 2005-12-15 | Koninkl Philips Electronics Nv | Isolierende schicht für ein heizelement |
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 |
ES2385155B1 (es) * | 2010-12-22 | 2013-05-24 | BSH Electrodomésticos España S.A. | Mufla de cocción. |
ES2385156B1 (es) * | 2010-12-22 | 2013-05-24 | BSH Electrodomésticos España S.A. | Soporte de producto 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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120033A (en) * | 1981-01-19 | 1982-07-26 | Mitsubishi Electric Corp | Inner wall of cooking range |
Family Cites Families (15)
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 |
DE3302794A1 (de) * | 1983-01-28 | 1984-08-02 | Miele & Cie GmbH & Co, 4830 Gütersloh | Backmuffel fuer einen elektroherd |
DE3650143T2 (de) * | 1985-04-17 | 1995-06-29 | Matsushita Electric Ind Co Ltd | Kochgerät. |
DE8622874U1 (de) * | 1986-08-26 | 1987-02-05 | Breust, Jan-Uwe, 2223 Meldorf, De | |
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 TR TR2000/02585T patent/TR200002585T2/xx unknown
- 1999-03-26 ES ES02017745T patent/ES2237637T3/es not_active Expired - Lifetime
- 1999-03-26 KR KR1020007010578A patent/KR20010034651A/ko not_active Application Discontinuation
- 1999-03-26 WO PCT/EP1999/002061 patent/WO1999050601A1/de not_active Application Discontinuation
- 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 JP JP2000541465A patent/JP2002510029A/ja active Pending
- 1999-03-26 DE DE59911624T patent/DE59911624D1/de not_active Expired - Lifetime
- 1999-03-26 EP EP02017745A patent/EP1255083B1/de not_active Expired - Lifetime
- 1999-03-26 ES ES99917868T patent/ES2193696T3/es not_active Expired - Lifetime
- 1999-03-26 EP EP99917868A patent/EP1064502B1/de not_active Revoked
- 1999-03-26 DE DE59904331T patent/DE59904331D1/de not_active Revoked
-
2000
- 2000-09-27 US US09/671,826 patent/US6392203B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120033A (en) * | 1981-01-19 | 1982-07-26 | Mitsubishi Electric Corp | Inner wall of cooking range |
Also Published As
Publication number | Publication date |
---|---|
WO1999050601A1 (de) | 1999-10-07 |
TR200002585T2 (tr) | 2000-11-21 |
ATE232952T1 (de) | 2003-03-15 |
EP1255083A1 (de) | 2002-11-06 |
EP1064502A1 (de) | 2001-01-03 |
ES2237637T3 (es) | 2005-08-01 |
DE19813787A1 (de) | 1999-09-30 |
DE59911624D1 (de) | 2005-03-17 |
ES2193696T3 (es) | 2003-11-01 |
DE59904331D1 (de) | 2003-03-27 |
US6392203B1 (en) | 2002-05-21 |
EP1064502B1 (de) | 2003-02-19 |
KR20010034651A (ko) | 2001-04-25 |
PL343159A1 (en) | 2001-07-30 |
JP2002510029A (ja) | 2002-04-02 |
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