EP1094277B1 - Four avec panneau de verre pour porte de four - Google Patents

Four avec panneau de verre pour porte de four Download PDF

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Publication number
EP1094277B1
EP1094277B1 EP00122147A EP00122147A EP1094277B1 EP 1094277 B1 EP1094277 B1 EP 1094277B1 EP 00122147 A EP00122147 A EP 00122147A EP 00122147 A EP00122147 A EP 00122147A EP 1094277 B1 EP1094277 B1 EP 1094277B1
Authority
EP
European Patent Office
Prior art keywords
glass
baking oven
glass pane
oven
pane
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
Application number
EP00122147A
Other languages
German (de)
English (en)
Other versions
EP1094277A1 (fr
Inventor
Clemens Schaller
Klaus Erdmann
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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1094277A1 publication Critical patent/EP1094277A1/fr
Application granted granted Critical
Publication of EP1094277B1 publication Critical patent/EP1094277B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the invention relates to an oven with an oven door glass pane according to the preamble of claim 1.
  • the invention relates to the problem of thermal heat distortion of glass panes of oven doors. For oven doors with multiple glass panes, this affects Invention in particular the oven door inner pane. Glass panes bulge depending on the temperature, very strong in some cases. Depending on Glass tempering and depending on the uneven thermal load on the glass pane the glass may become unstable or in a stable state when hot are located. An unstable condition can lead to excessive noise to lead.
  • “unstable” condition is meant a condition in which Glass bulges can shift from one side of the glass to the other and vice versa, which is often associated with loud noise is.
  • the temperature of the oven acts on one side on the glass pane of the oven door Oven interior, which is between room temperature of about 10 ° C to 30 ° C can fluctuate to over 300 ° C, and on the other hand the temperature of the Oven outside in the kitchen, in which the oven is located, and which relative is constant between about 10 ° C and 30 ° C.
  • the heat is distributed in the Glass pane mostly not evenly and leads especially with such uneven Thermal stresses to high stresses and deformations in the Glass pane. Because the glasses are designed as flat panes in the prior art there are different deformations and different Bulges. One or more different can be inside the glass pane Deformations and different curvatures arise. A curvature can be in different areas have different radii of curvature.
  • the object of the invention is to solve breaks and noises Oven-glass pane, which are caused by strong temperature changes simple and reliable way and in a predictable manner for all types of ovens Way to avoid safely.
  • This object is achieved according to the invention in that the size and direction of the crowning the temperature-dependent expansion properties of the glass pane are adjusted in this way are that the crowning over the entire oven heating temperature range cannot turn in the opposite direction to the crown.
  • the oven door glass pane in particular the inner pane an oven door, is prebombed so that the crowning over the entire thermal oven heating process is controllable. So that are also thermal Dimensional changes of the glass pane and the metal structure of the Oven door can be predetermined. Furthermore, the risk of noise is minimized because the Bombing is chosen such that the one directed towards one side of the glass pane Bombing not on the other side of the glass pane during the oven heating process can handle. Furthermore, the crowning can also cause relative movements between the glass pane and the frame structure receiving it the oven door can be reduced.
  • the invention is based on the idea that the heat distribution in the Glass pane can only be improved insignificantly that the temperature-dependent Linear expansion of the glass pane must be accepted by targeted Pre-crowning in the hot surfaces of the glass pane is the direction for the temperature-dependent Linear expansion can be predetermined.
  • the crowning of the Glass pane can be used in process engineering in the manufacture of the glass pane control and achieve through targeted cooling air distribution during the cooling process, with this targeted cooling air distribution a corresponding glass tempering results, through which the glass pane in the cooled state has predetermined curvature (crowning).
  • crowning means a curvature of the glass pane, which the pane of glass has when it is the same on both sides of the pane Is exposed to ambient temperature.
  • the door glass panes are disproportionate and one larger crowning (curvature) than shown in reality to the To make invention clearer.
  • the glass is preferred a so-called tempered glass.
  • oven used here refers not only to ovens for baking, but any kind of heatable equipment room with an equipment room door that with a glass pane as a viewing window for observing the cooking process from Food is provided in the equipment room, e.g. also grills or combined baking and grilling devices.
  • the equipment room is therefore described below referred to as oven interior 4.
  • the ovens 2 of FIGS. 1 and 2 have an electrically or gas heated Interior 4 (baking room), which on the front through an oven door 6 is lockable.
  • the oven door 6 is about a horizontal hinge 8 and too pivotable.
  • the oven door 6 of FIG. 1 contains a viewing window 14 with a glass pane 10, which is arched into the interior 4.
  • the glass pane 10 thus has a convexity extending into the interior 4, in the following called "convex crowning".
  • the oven door 6 of FIG. 2 has a viewing window 14 with one from the interior 4 convexly curved glass pane 12.
  • This glass pane 12 thus has a convex curvature from inside 4, being concave on its side facing the interior 4, in the following called "concave crowning".
  • FIG. 3 shows a side view of a glass pane 10 from FIG. 1 in the form of a single glass pane, that is, a single-layer pane of glass that prebombs is so that they are at the same temperature on both sides of the glass in the interior 4 inside, that is convex, is arched.
  • the curvature With increasing temperature in the interior 4 and approximately constant temperature on the outside of the oven the curvature becomes larger, ie the radius of curvature becomes smaller.
  • Fig. 4 shows the glass sheet 12 of Fig. 2 in the form of a "single glass sheet", i. H. a single-layer glass pane, which is prebombed, so that it is in the Interior has 4 concave curvature or crowning, if on both sides of the glass the temperature is approximately the same. This has increased with increasing Temperature in the interior 4 and approximately constant temperature on the Oven outside the disadvantage that the crowning on the other side with can strike through a loud bang or that to avoid such Penetration or tipping over the crown must be very large.
  • FIG. 5 shows the glass pane 10 from FIG. 1 in the form of at least two Glass layers 10-1 and 10-2 existing laminated glass pane, which is prebombed is so that it is convex into the interior 4 when on both sides of the glass pane have approximately the same temperature.
  • FIG. 6 shows the glass pane 12 from FIG. 2 in the form of at least two Glass layers 12-1 and 12-2 existing laminated glass, which is prebombed is so that it is convex out of the interior 4 when the temperature on both sides of the glass is approximately the same. This means, that the laminated glass pane 12 facing the inner space 4 Side is concave.
  • both glass layers 12-1 and 12-2 have the same coefficient of thermal expansion.
  • the inner glass layer 12-1 expand much more than the outer Glass layer 12-2.
  • the crowning from the outside turns over on the inside, which can produce a strong bang, and the risk that the laminated glass pane breaks. Due to the temperature strong expansions and contractions also create strong relative movements between the laminated glass pane and the parts holding it the oven door 6.
  • the glass pane 10 or 12 can not only with a crown, but also be provided with several crowns, i.e. with one or more arches each in the same or in different directions.
  • This one or several curvatures or curvatures can have a uniform radius of curvature or a radius of curvature that changes across the crown to have. In areas with less temperature change during operation a smaller prebombing is usually more appropriate than in other areas where there are major temperature changes occur when baking or grilling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Electric Stoves And Ranges (AREA)
  • Laminated Bodies (AREA)

Claims (6)

  1. Four avec panneau de verre pour porte de four, ledit panneau de verre étant prébombé, caractérisé en ce que la taille et le sens du bombement sont adaptés aux caractéristiques de dilatation du panneau de verre (10; 12) dépendantes de la température de manière telle que, sur toute la plage de températures de chauffage du four, le bombement ne peut pas se retourner pour prendre le sens inverse du bombement.
  2. Four avec panneau de verre pour porte de four selon la revendication 1, caractérisé en ce que la face convexe du bombement se trouve du côté intérieur (4) du four et en ce que la face concave du bombement se trouve du côté extérieur du four.
  3. Four avec panneau de verre pour porte de four selon la revendication 1 ou 2, caractérisé en ce que ledit panneau de verre est un panneau monocouche.
  4. Four avec panneau de verre pour porte de four selon la revendication 1 ou 2, caractérisé en ce que ledit panneau de verre est un panneau multicouches.
  5. Four avec panneau de verre pour porte de four selon la revendication 4, caractérisé en ce que la couche (10-1; 12-1) du panneau plus rapprochée de l'espace intérieur (4) du four a un coefficient de dilatation thermique plus élevé que la couche (10-2; 12-2) du panneau plus éloignée.
  6. Four avec panneau de verre pour porte de four selon l'une des revendications précédentes, caractérisé en ce que le verre dudit panneau est un verre trempé.
EP00122147A 1999-10-21 2000-10-12 Four avec panneau de verre pour porte de four Expired - Lifetime EP1094277B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19950819A DE19950819A1 (de) 1999-10-21 1999-10-21 Backofentür-Glasscheibe
DE19950819 1999-10-21

Publications (2)

Publication Number Publication Date
EP1094277A1 EP1094277A1 (fr) 2001-04-25
EP1094277B1 true EP1094277B1 (fr) 2004-07-28

Family

ID=7926471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122147A Expired - Lifetime EP1094277B1 (fr) 1999-10-21 2000-10-12 Four avec panneau de verre pour porte de four

Country Status (4)

Country Link
EP (1) EP1094277B1 (fr)
AT (1) ATE272192T1 (fr)
DE (2) DE19950819A1 (fr)
ES (1) ES2223361T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206373A1 (de) * 2002-02-15 2003-08-28 Bsh Bosch Siemens Hausgeraete Gargerätetür
DE102005040260A1 (de) * 2005-08-24 2007-03-01 Miele & Cie. Kg Backofentür mit einer in einem Rahmen eingefassten bombierten Glasscheibe
DE102007062979B4 (de) 2007-12-21 2013-03-07 Schott Ag Verfahren zur Herstellung eines Glasgegenstands in Form einer Gargeräte-Innenscheibe, Glasscheibenpaket und Haushalts-Gargerätetür

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042212B (de) * 1955-01-12 1958-10-30 Krefft A G W Einrichtung an Doppeltueren von Back- und Bratoefen, insbesondere Back- und Bratroehren von Kuechenherden
DE4028674A1 (de) * 1990-09-10 1992-03-12 Gaggenau Werke Backofen
DE29811084U1 (de) * 1998-04-27 1998-09-24 Schott Glas Sichttür für ein Hausgerät

Also Published As

Publication number Publication date
EP1094277A1 (fr) 2001-04-25
DE19950819A1 (de) 2001-04-26
DE50007188D1 (de) 2004-09-02
ES2223361T3 (es) 2005-03-01
ATE272192T1 (de) 2004-08-15

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