EP1064502B1 - Four a mouffle - Google Patents

Four a mouffle Download PDF

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Publication number
EP1064502B1
EP1064502B1 EP99917868A EP99917868A EP1064502B1 EP 1064502 B1 EP1064502 B1 EP 1064502B1 EP 99917868 A EP99917868 A EP 99917868A EP 99917868 A EP99917868 A EP 99917868A EP 1064502 B1 EP1064502 B1 EP 1064502B1
Authority
EP
European Patent Office
Prior art keywords
baking oven
muffle
chamber
protective 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.)
Revoked
Application number
EP99917868A
Other languages
German (de)
English (en)
Other versions
EP1064502A1 (fr
Inventor
Gerhard Schmidmayer
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7862695&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1064502(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to EP02017745A priority Critical patent/EP1255083B1/fr
Publication of EP1064502A1 publication Critical patent/EP1064502A1/fr
Application granted granted Critical
Publication of EP1064502B1 publication Critical patent/EP1064502B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • 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 according to the preamble of Claim 1.
  • a generic oven is known from JP 57 120033 A.
  • the inside walls of the Oven muffle are provided with an enamel layer.
  • the enamel coating is used for one as an anti-corrosion layer and the other as an anti-oxidation layer. Farther the enamel layer improves the cleanability of the oven muffle and the Surface hardness increased. Finally, the look of the oven muffle is given by the enamel certainly.
  • the object of the present invention is therefore in an oven according to the preamble of claim 1 to improve the performance properties of the oven muffle.
  • Such thin protective layers can, in terms of process engineering, simply, preferably Sol-gel technology can be realized.
  • the sol-gel layer is, for example, simple Dip process can be applied to the muffle walls.
  • the sol-gel technique the low baking temperatures compared to the enamel technique from about 450 to 500 ° C favorable.
  • the applied sol-gel layers are also for the suitable for typical cooking temperatures.
  • the Hard layer with a thickness of 5 to 10 ⁇ m.
  • the Sol-gel hard layer a sol-gel functional layer is provided.
  • This allows 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 realized as a layer approximately 10 ⁇ m, in particular approximately 2 to 3 ⁇ m thick. Due to the sol-gel technique, the applied layers have, despite their low Thickness on each other as well as on the metal over a great stability and one great adherence.
  • the protective layer can be 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 can be achieved in that the muffle wall has an insulating protective layer in the um area on which the heating element is applied directly using thick film technology. If necessary, the heating element also with more complex coating processes, for example thin-film technology, be realized.
  • the strength the muffle wall can also be reduced to, for example, about 0.4 mm.
  • the oven muffle is provided with a stabilizing frame supported from the outside. This is especially important if 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-up times and heat distribution will continue to be significantly improved. moreover can be saved due to the low material thickness. Besides, that will Weight of the oven muffle significantly reduced.
  • the stabilizing frame is essentially formed by oven insulation. On the one hand, this must be sufficiently compliant be involved in the spatial enlargement of the oven muffle when heating up to be able to, and on the other hand be stiff enough to accommodate the thin-walled oven muffle to be able to stabilize.
  • 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 one Back wall.
  • the loading opening of the oven muffle 1 moves a muffle flange 5.
  • the oven muffle 1 is made in one piece in a hydroforming process. at This deep-drawing process shows the oven muffle in contrast to conventional mechanical deep-drawn parts 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 do not show up.
  • sol-gel technology are a muffle inside 7 and a muffle outside 9 coated with a sol-gel layer 11 (Fig. 2).
  • sol-gel a colloid from a solution (sol) by controlled condensation methods System created on the micrometer scale (gel).
  • This gel is made by drying Solvent removal compressed and then cured in a suitable manner or baked at a temperature of around 450 to 500 ° C.
  • the sol-gel layer is connected to the substrate via chemical compounds particularly firmly connected.
  • the resulting sol-gel layer is about 10 ⁇ m thick and forms a hard surface on both sides of the stainless steel muffle wall 3 electrical insulation properties. Furthermore, it forms a tarnish and oxidation protection for the stainless steel.
  • the sol-gel hard layer is in at least one further process step in sol-gel technology functional layers on different Areas of the inside of the muffle 7 applied.
  • the sol-gel functional layers are included a thickness of about 3 ⁇ m.
  • the one formed from the two sol-gel layers 11 Protective layer is so transparent that the relevant for the preparation of dishes Heat radiation in the infrared or visible light area the protective layer can penetrate and is optimally reflected from the stainless steel surface into the interior of the muffle can be (Fig. 2). If necessary, there is also a transparent coloring of the layers possible.
  • the sol-gel hard layer is in a subsequent process step Muffle outside 9 meandering heating conductor 13 applied in thick-film technology (Fig. 3). Due to the particularly thin insulation layer between the heating conductor 13 and the muffle wall 3 is a particularly cheap and uniform heat transfer possible.
  • the heating conductors 13 can be connected to electrical connections via conductor connections 15 be supplied.
  • the oven muffle 1 is finally in a muffle insulation 17 made of fiber-free Insulation material, e.g. Perlite, embedded. Because of the insulation jacket Oven muffle 1, the wall thickness of which is only 0.4 mm, stabilized. Still is the insulation shell 17 is designed to be sufficiently flexible to withstand thermal expansion the oven muffle 1 does not close when heating up during a baking process tear.
  • a muffle insulation 17 made of fiber-free Insulation material, e.g. Perlite, embedded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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)
  • Special Wing (AREA)
  • Electric Ovens (AREA)

Claims (9)

  1. Four équipé d'une moufle métallique pouvant être fermée en sa partie avant par une porte, dont les parois de la moufle sont associées à des éléments chauffants pour le chauffage du compartiment de cuisson à plus d'environ 180 °C resp. du produit à cuire disposé dans celui-ci, pourvue d'une couche de protection recouvrant les parois de la moufle au moins à ses faces intérieures, l'épaisseur de la couche protectrice (11) étant inférieure à environ 30 µm, caractérisé en ce que la couche protectrice (11) est transparente et en ce que la face intérieure de la paroi de la moufle sert de réflecteur.
  2. Four selon la revendication 1, caractérisé en ce que la couche protectrice est réalisée comme couche dure sol-gel (11).
  3. Four selon la revendication 2, caractérisé en ce que une couche fonctionnelle sol-gel est prévue sur la couche dure sol-gel.
  4. Four selon la revendication 3, caractérisé en ce que différentes zones de surface des parois de la moufle (3) comprennent différentes couches fonctionnelles.
  5. Four selon la revendication 1, caractérisé en ce que la moufle du four est en aluminium et en ce que la couche protectrice est réalisée comme couche d'oxyde d'aluminium anodisée.
  6. Four selon l'une des revendications précédentes, caractérisé en ce que la paroi de la moufle comprend au moins en partie une couche protectrice isolante, sur laquelle l'élément chauffant (13) est appliqué par la technique des couches épaisses.
  7. Four selon l'une des revendications précédentes, caractérisé en ce que un cadre de stabilisation soutient la moufle du four (1) de l'extérieur et en ce que le cadre de stabilisation est formé pour l'essentiel par une isolation de moufle (17).
  8. Four selon l'une des revendications précédentes, caractérisé en ce que l'épaisseur de la paroi de la moufle (3) est comprise entre environ 0,3 à 0,5 mm.
  9. Moufle de four selon l'une des revendications précédentes.
EP99917868A 1998-03-27 1999-03-26 Four a mouffle Revoked EP1064502B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02017745A EP1255083B1 (fr) 1998-03-27 1999-03-26 Four à mouffle

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 (fr) 1998-03-27 1999-03-26 Four a mouffle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02017745A Division EP1255083B1 (fr) 1998-03-27 1999-03-26 Four à mouffle

Publications (2)

Publication Number Publication Date
EP1064502A1 EP1064502A1 (fr) 2001-01-03
EP1064502B1 true EP1064502B1 (fr) 2003-02-19

Family

ID=7862695

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02017745A Expired - Lifetime EP1255083B1 (fr) 1998-03-27 1999-03-26 Four à mouffle
EP99917868A Revoked EP1064502B1 (fr) 1998-03-27 1999-03-26 Four a mouffle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02017745A Expired - Lifetime EP1255083B1 (fr) 1998-03-27 1999-03-26 Four à mouffle

Country Status (10)

Country Link
US (1) US6392203B1 (fr)
EP (2) EP1255083B1 (fr)
JP (1) JP2002510029A (fr)
KR (1) KR20010034651A (fr)
AT (1) ATE232952T1 (fr)
DE (3) DE19813787A1 (fr)
ES (2) ES2237637T3 (fr)
PL (1) PL343159A1 (fr)
TR (1) TR200002585T2 (fr)
WO (1) WO1999050601A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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
JP2004519832A (ja) * 2001-04-17 2004-07-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 加熱素子用絶縁性層
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 (fr) * 2010-07-09 2017-10-11 Electrolux Home Products Corporation N.V. Cadre frontal pour cavité de four d'un four de cuisson
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

Family Cites Families (16)

* Cited by examiner, † Cited by third party
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 (fr) * 1985-04-17 1988-12-28 Kazumi Hirai Appareil chauffant pour la cuisson
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

Also Published As

Publication number Publication date
ES2237637T3 (es) 2005-08-01
JP2002510029A (ja) 2002-04-02
ES2193696T3 (es) 2003-11-01
ATE232952T1 (de) 2003-03-15
US6392203B1 (en) 2002-05-21
DE19813787A1 (de) 1999-09-30
DE59911624D1 (de) 2005-03-17
PL343159A1 (en) 2001-07-30
WO1999050601A1 (fr) 1999-10-07
KR20010034651A (ko) 2001-04-25
EP1255083B1 (fr) 2005-02-09
EP1064502A1 (fr) 2001-01-03
EP1255083A1 (fr) 2002-11-06
TR200002585T2 (tr) 2000-11-21
DE59904331D1 (de) 2003-03-27

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