EP1764560A1 - Fournaise - Google Patents

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Publication number
EP1764560A1
EP1764560A1 EP05108505A EP05108505A EP1764560A1 EP 1764560 A1 EP1764560 A1 EP 1764560A1 EP 05108505 A EP05108505 A EP 05108505A EP 05108505 A EP05108505 A EP 05108505A EP 1764560 A1 EP1764560 A1 EP 1764560A1
Authority
EP
European Patent Office
Prior art keywords
elements
oven
oven according
cavity
presents
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Withdrawn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
EP05108505A
Other languages
German (de)
English (en)
Inventor
Luca Frasnetti
Kanagaray Vetrivel
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP05108505A priority Critical patent/EP1764560A1/fr
Publication of EP1764560A1 publication Critical patent/EP1764560A1/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Withdrawn legal-status Critical Current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 domestic oven comprising a cavity with a back wall and side walls.
  • the back wall and the side walls of a domestic oven are usually made of metal sheets assembled together.
  • the side walls are defined by a single metal skirt bent in an annular configuration and soldered at its ends, to which a metal back wall is soldered or fixed.
  • the metal sheets of the cavity have to be provided with insulation material, for instance panels of glass or rock wool. Then these panels are covered with auxiliary metal sheets that define the external final shape of the oven. All this assembling process is quite complex and moreover there are recycling problems (mainly due to the use of a big amount of insulating material) at the end of the useful life of the oven.
  • US-A-4127108 discloses a baking device of refractory stoneware comprising a bottom plate, a hood mounted on it with a front open end and a lid closing the open end, for baking rye flour bread and other forms of bread.
  • the baking device disclosed by US-A-6101930 includes a rectangular base and a pair of said walls, with the main purpose of reducing heat fluctuations thanks to the use of refractory insulating materials.
  • the side walls of the cavity comprise elements of refractory insulating material assembled together.
  • refractory insulating material we mean all the materials based on clay (baked clay or fire clay) as well as ceramic material.
  • the refractory insulating material are all the known clays which can be easily extruded through dies and that are fired in industrial ovens or kilns.
  • the elements that form the side walls of the oven according to the invention are therefore preferably made through an extrusion process, followed by drying and firing in an industrial oven or kiln for getting solid stone-like elements. This feature reduces dramatically the overall cost of the oven compared to the known methods in which the cavity of refractory material is moulded.
  • the use of elements of refractory insulating material reduce the transportation cost of the cavity, since the elements can be packed together therefore reducing the volume of the product to be shipped.
  • each of said elements presents a double wall structure. This feature reduces the weight of the oven without decreasing the heat insulation properties of the elements.
  • a domestic oven comprising a cavity 10a having side walls defined by a bottom element 12, a top element 14 and side elements 16 assembled together.
  • the rectangular elements 12, 14 and 16 are structural double wall elements obtained by firing extruded pieces of clay, therefore using a technique well known in the field of bricks.
  • the clay used for the above structural elements is preferably a fire clay which can withstand temperature up to ......°C, even if the composition of the clay is not critical in view of the usual temperatures reached in a domestic oven.
  • the elements 12, 14 and 16 are sandwiched between a front metal frame 18 and a back metal cover 20 which both have L-bent edges for enclosing the outside contour of the said elements in the assembled configuration thereof.
  • Figure 3 shows in detail the shape of the baked clay or fire clay elements 12, 14 and 16. All the elements have external flat surfaces respectively 12a, 14a and 16a that define a rectangular cross section.
  • the bottom element 12 and the top element 16 have concave interior surfaces 12b and 14b respectively.
  • the side elements 16 are identical, and comprise an interior surface 16b having parallel longitudinal grooves 22 for supporting wire racks R, dripping pans P or similar oven accessories (figure 1).
  • each of the side elements 16 presents, adjacent to its top and bottom portion (with reference to the assembled configuration of the oven) tongues or tenons 24 that cooperate with corresponding grooves 26 provided on side walls of the bottom and top elements 12 and 14 for assembling the elements together in a predetermined configuration.
  • Tenons 24 have widths slightly smaller than the widths of grooves 26 so as to be receivable therein.
  • the side elements 16 are provided with longitudinal holes 28 into which are placed rods 30 projecting outside of the oven 10 through opening 33 in the front frame 18 and through opening 36 in the back cover 20 of the oven.
  • the ends of the rods are threaded so that the front frame 18 and the back cover 20 are tightened against the clay elements by means of nuts 30a.
  • the front frame 18 (figure 4) has an opening 18a whose contour matches approximately the cross section of the interior surfaces of the cavity 10a, and is provided with a gasket 32 (figure 1).
  • the vertical edges of the opening 18a are not aligned with the interior surfaces 16b of the side elements 16 in order to allow the racks or dripping pans to be inserted into the grooves 22.
  • the font frame 18 presents cut-outs 34 where hinge brackets (not shown) will be mounted for supporting the oven door (which is of the traditional type), and upper brackets 36 for mounting the oven front panel and user interface 38 (figure 1).
  • the back cover 20 of the oven 10 (figure 5) has holes 40 for installing a top heating coil 42 (figure 1) and holes 44 for mounting a bottom heating coil 46.
  • Such heating coils 42 and 46 are laterally inserted in corresponding longitudinal grooves 42a and 46a (figure 3) provided in the side elements 16.
  • the back cover presents centrally a hole 48 for mounting a rear fan, and it is provided with a metal auxiliary frame 50 (figure 2) fixed to bent pieces 52 of the back cover 20 (by means of screws or similar fasteners) and used for installing the electric motor of the fan and other components of the oven (not shown).
  • the back cover 20 is covered by a traditional insulation panel (not shown) and supports an auxiliary back wall 49 in the cavity 10a covering the ventilation fan as well as a possible auxiliary heating element around the fan.
  • Figure 6 shows a second embodiment of the oven, in which the side elements 16 are provided, on the interior surface 16b thereof, of longitudinal ridges 54 for supporting racks R or dripping pans P.
  • the refractory insulating elements 12, 14 and 16 are preferably uncoated since the tests performed by the applicant have shown that the use of uncoated clay elements are extremely beneficial in adsorbing water vapour originated during the cooking process.
  • the temperature of the outside surfaces of the refractory insulating elements has been constantly much lower than the temperature of traditional oven (the inside temperature being equal). Moreover the inside temperature has been much more stable than in traditional ovens.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
EP05108505A 2005-09-15 2005-09-15 Fournaise Withdrawn EP1764560A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05108505A EP1764560A1 (fr) 2005-09-15 2005-09-15 Fournaise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05108505A EP1764560A1 (fr) 2005-09-15 2005-09-15 Fournaise

Publications (1)

Publication Number Publication Date
EP1764560A1 true EP1764560A1 (fr) 2007-03-21

Family

ID=35462645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108505A Withdrawn EP1764560A1 (fr) 2005-09-15 2005-09-15 Fournaise

Country Status (1)

Country Link
EP (1) EP1764560A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053771A1 (de) * 2008-10-22 2010-04-29 E.G.O. Elektro-Gerätebau GmbH Auskleidung für einen Backofen und Backofen
US10634362B2 (en) 2016-06-30 2020-04-28 Midea Group Co., Ltd. Oven bottom with cooking surface
GB2607268A (en) * 2021-04-13 2022-12-07 Uk Innovations Group Ltd Stone-lined oven

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE440295C (de) * 1927-02-01 Johann Butzerin Elektrische Heiz- und Kochvorrichtung
US3731039A (en) * 1970-11-27 1973-05-01 Mansfield Heat Ltd Electric cooking ovens
DE2610918A1 (de) * 1976-03-16 1977-09-22 Theo Anschuetz Haushalts-steinbackofen
EP0254500A1 (fr) * 1986-07-21 1988-01-27 Aktiebolaget Electrolux Appareils de cuisson
WO1989001921A1 (fr) * 1987-08-31 1989-03-09 Andrew Savva Ceramiques thermoresistantes et utilisations de telles ceramiques
US6101930A (en) * 1998-09-16 2000-08-15 Van Over; Charles Oven insert for improved baking

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE440295C (de) * 1927-02-01 Johann Butzerin Elektrische Heiz- und Kochvorrichtung
US3731039A (en) * 1970-11-27 1973-05-01 Mansfield Heat Ltd Electric cooking ovens
DE2610918A1 (de) * 1976-03-16 1977-09-22 Theo Anschuetz Haushalts-steinbackofen
EP0254500A1 (fr) * 1986-07-21 1988-01-27 Aktiebolaget Electrolux Appareils de cuisson
WO1989001921A1 (fr) * 1987-08-31 1989-03-09 Andrew Savva Ceramiques thermoresistantes et utilisations de telles ceramiques
US6101930A (en) * 1998-09-16 2000-08-15 Van Over; Charles Oven insert for improved baking

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053771A1 (de) * 2008-10-22 2010-04-29 E.G.O. Elektro-Gerätebau GmbH Auskleidung für einen Backofen und Backofen
DE102008053771B4 (de) * 2008-10-22 2011-04-14 E.G.O. Elektro-Gerätebau GmbH Auskleidung für einen Backofen und Backofen
US10634362B2 (en) 2016-06-30 2020-04-28 Midea Group Co., Ltd. Oven bottom with cooking surface
GB2607268A (en) * 2021-04-13 2022-12-07 Uk Innovations Group Ltd Stone-lined oven

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