EP0987497A1 - Enceinte de cuisson avec isolation thermique - Google Patents

Enceinte de cuisson avec isolation thermique Download PDF

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Publication number
EP0987497A1
EP0987497A1 EP99118118A EP99118118A EP0987497A1 EP 0987497 A1 EP0987497 A1 EP 0987497A1 EP 99118118 A EP99118118 A EP 99118118A EP 99118118 A EP99118118 A EP 99118118A EP 0987497 A1 EP0987497 A1 EP 0987497A1
Authority
EP
European Patent Office
Prior art keywords
wall
muffle
insulating
oven
oven muffle
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.)
Withdrawn
Application number
EP99118118A
Other languages
German (de)
English (en)
Inventor
Peter Mallinger
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.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0987497A1 publication Critical patent/EP0987497A1/fr
Withdrawn legal-status Critical Current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
    • F24C15/34—Elements and arrangements for heat storage or insulation

Definitions

  • the present invention relates to a baking oven muffle with a particle material existing insulation layer provided in a between two insulation walls Gap is included.
  • oven muffle it is generally intended to be the muffle of a household appliance be understood, which must be isolated.
  • Oven muffle glass or mineral wool fibers are used, but are increasingly being replaced for health and safety reasons.
  • Granules used, such as for example according to DE 40 28 743 A1 or DE 195 29 040 A1 for oven muffle of the type mentioned at the outset have the tendency to result in use the movements of the muffle wall caused by the temperature fluctuations and the outer wall bounding them the tendency to compress or close shred, which leads to a decrease in volume. This has worsened Insulation effect.
  • composite mats or sheets containing films, foam and the like can, for example according to DE 44 38 294 A1.
  • the invention has for its object a thermal insulation for an oven muffle To be provided that is free of fibers and binders and good insulation properties having.
  • the insulating layer thus consists of particle material and is in a space provided between two insulating walls contain. One or both insulating walls are prestressed towards the other.
  • This measure according to the invention causes the particles of the insulating layer also Changes in temperature as a result of pressurization by the inner and / or outer Insulating wall are held in place. On the other hand, it remains an unhindered one Extending the muffle walls ensures that there is no increased mechanical Stresses of the housing comes. In this way it is achieved that Volume of the insulating layer is maintained and the insulating properties are maintained on all sides become.
  • the bias of the outer insulating wall is advantageously carried out in that it has embossed shapes in its surfaces. These shaped embossings allow a co-movement the insulation wall due to temperature changes, but at the same time cause that a slight pressure is exerted on the thermal insulation material inside.
  • outer insulating wall can be cambered outwards or inwards Plates are made, which simplifies production.
  • the inner insulating wall can expediently also be provided as a muffle wall are provided so that no additional housing, except the outer insulating wall must become.
  • the bottom heat radiator with the associated outer wall or its housing insert is appropriate directly below the muffle bottom, so again arranged above the lower insulating layer.
  • the two insulating walls form according to the invention its own inner housing in such a way that even at maximum temperature expansion Muffle wall no tension occurs.
  • the bottom heat radiator with associated the outer wall or housing is expedient between the muffle base and inserted the inner insulating wall.
  • Perlite, diatomaceous earth, expanded clay, etc. can be used in particular as insulation material, this list is not exhaustive. Are particularly suitable as filler forms Balls, but other shapes of granules are possible, such as coarse powder.
  • FIG. 1 in which an oven muffle 2 with a muffle wall 4 shown on the front of the oven for formation the front wall is bent (see reference number 4a).
  • the muffle wall 4 has in the usual way Way bushings, of which in Fig. 1 a bushing 6 for one Top heat radiator 8 is shown in the muffle rear wall 4b.
  • the muffle wall 4 is surrounded by a double insulating wall 14, 16.
  • An inner one Insulating wall 14 with bushings 18, 20, 22 for the top heat radiator, bottom heat radiator and the lower heat outer wall essentially surrounds the muffle wall 4 constant distance such that they expand due to temperature can.
  • An outer insulating wall 16 is multi-part in the present embodiment formed from different plates, of which in FIG. 1 the top wall plate 16a, Back panel 16b and bottom panel 16c are shown.
  • the outer plates 16a, 16b and 16c all have upward or downward facing edge flanges or areas 16d for assembly purposes.
  • the outer plates 16a, 16b and 16c are in shown embodiment inwards, i.e. biased towards the oven muffle 2, and bombshell.
  • the plates thus practice due to their shape and Constantly relieving an inward pressure, essentially regardless of temperature fluctuations.
  • an insulating layer 24 which is shown in FIG Embodiment consists of pearlite balls. Due to the pressure of the outer plates 16a, 16b and 16c, the pearlite balls are also exposed to temperature changes in held in place, with only slight but constant pressure. Even when this pearlite microstructure ages and any comminution that may occur, i.e. thus when the pearlite balls are placed, they become due to the pressurization always kept fixed by the outer insulating wall 16, so that even over longer Service life the insulation properties can be maintained on all sides.
  • the layer thickness of the insulating layer in the upper region is thinner, which is the case with the present Construction of cooling air ducts in the usual way above it allows is.
  • the layer thickness here can also be the same as in the other areas his.
  • the structure of the oven muffle 2 and its isolation is essentially as previously described. However the two insulating walls do not represent a separate housing, but rather form the muffle wall 4 also the inner insulating wall.
  • the outer insulating wall 16 again consists of individual plates 16a, 16b and 16c, which in turn by crowning are biased inwards to ensure constant compensation for compression and loss of volume to provide the insulating layer 24.
  • the third embodiment of the oven muffle according to the invention shown in FIG. 3 again concerns a device with pyrolysis operation. It differs essentially 1 in the curvature of the outer plates 161a, 161b, 161c to the outside, but also this crowning to the outside causes internal pressure on the insulating layer 24.
  • FIG. 4 is a fourth embodiment of an oven muffle according to the invention for shown a device without pyrolysis. Like the third embodiment, it has one outer insulating wall 161 with outwardly convex plates 161a, 161b and 161c, which exert an inward pressure on the insulating layer 24.
  • the inner or the outer insulating wall also or additionally shaped embossing of any kind. Then through the appropriate shapes the required pressure is exerted on the insulating layer or its particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP99118118A 1998-09-15 1999-09-10 Enceinte de cuisson avec isolation thermique Withdrawn EP0987497A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19842247 1998-09-15
DE19842247A DE19842247A1 (de) 1998-09-15 1998-09-15 Backofenmuffel mit thermischer Isolierung

Publications (1)

Publication Number Publication Date
EP0987497A1 true EP0987497A1 (fr) 2000-03-22

Family

ID=7881055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118118A Withdrawn EP0987497A1 (fr) 1998-09-15 1999-09-10 Enceinte de cuisson avec isolation thermique

Country Status (3)

Country Link
US (1) US6080966A (fr)
EP (1) EP0987497A1 (fr)
DE (1) DE19842247A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033358C2 (de) * 2000-07-08 2003-07-31 Aeg Hausgeraete Gmbh Tür für ein Haushaltsgerät, insbesondere einen Haushaltsgarofen
DE10134520A1 (de) * 2001-07-16 2003-01-30 Bsh Bosch Siemens Hausgeraete Vorrichtung mit zumindest einer einen Garraum begrenzenden Wand
FR2835310B1 (fr) * 2002-01-30 2004-05-28 Seb Sa Four electromenager
US20050047584A1 (en) * 2003-08-26 2005-03-03 Capital One Financial Corporation System and method for customized intelligent contact routing
DE102004052046A1 (de) * 2004-10-26 2006-04-27 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerätevorrichtung
US20060151483A1 (en) * 2005-01-11 2006-07-13 Yun Min H Oven
WO2016128372A1 (fr) * 2015-02-10 2016-08-18 Electrolux Appliances Aktiebolag Porte de four et four comprenant une porte de four

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744580A1 (fr) * 1995-05-26 1996-11-27 AEG Hausgeräte GmbH Mouffle de four pour rÔtir et cuire au four
DE19520020A1 (de) * 1995-05-31 1996-12-05 Bosch Siemens Hausgeraete Wärmeisolierendes Gehäuse
DE19520040A1 (de) * 1995-05-31 1996-12-05 Bosch Siemens Hausgeraete Doppelwandiges Backrohr zwecks besserer Wärmedämmung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782360A (en) * 1972-11-20 1974-01-01 Gen Motors Corp Heat-cleaning range construction
DE3231462C1 (de) * 1982-08-24 1984-05-24 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Thermisch belastetes Blechteil, insbesondere Ofenmuffel und Verfahren zu dessen Herstellung
DE8414126U1 (de) * 1984-05-09 1987-06-19 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Backrohr
DE3650143T2 (de) * 1985-04-17 1995-06-29 Matsushita Electric Ind Co Ltd Kochgerät.
DE4028743A1 (de) * 1990-09-11 1992-03-12 Miele & Cie Backofen mit einer backmuffel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744580A1 (fr) * 1995-05-26 1996-11-27 AEG Hausgeräte GmbH Mouffle de four pour rÔtir et cuire au four
DE19520020A1 (de) * 1995-05-31 1996-12-05 Bosch Siemens Hausgeraete Wärmeisolierendes Gehäuse
DE19520040A1 (de) * 1995-05-31 1996-12-05 Bosch Siemens Hausgeraete Doppelwandiges Backrohr zwecks besserer Wärmedämmung

Also Published As

Publication number Publication date
DE19842247A1 (de) 2000-03-16
US6080966A (en) 2000-06-27

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