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 is based on a cooking appliance door according to the preamble of claim 1.
• Cooking appliances generally have a cooking space which is arranged in a housing and can be closed with a cooking appliance door.
• a cooking device is known from DE 196 38 241 A1, namely an oven with a generic cooking device door, which has a viewing window on its side facing the cooking chamber, e.g. made of glass ceramic.
• the viewing window completely covers an opening in the cooking space and forms a contact surface with a contact flange or extends beyond a seal.
• Such viewing panels are also referred to as full-surface viewing panels.
• a metal frame enclosing the viewing window can be saved and the resulting dirt edges on the inside of the viewing window facing the cooking space can be avoided. Furthermore, a large field of vision can be achieved.
• a further disadvantage is that full-surface viewing windows according to the prior art consist of high-quality special glasses, for example made of glass ceramics, in order to be able to avoid glass breakage as a result of high thermal stresses during pyrolysis operation.
• the object of the invention is to further develop a generic cooking appliance door, in particular advantageous thermal insulation with a simple and space-saving construction.
• the invention is based on a cooking appliance door, which on its side facing a cooking chamber arranged in a housing of a cooking appliance has a viewing window which completely covers an opening in the cooking chamber and forms a contact surface with a contact flange.
• the viewing window have a shape pointing in the direction of the cooking space in at least one area.
• Advantageous thermal insulation in the inner hot area can be achieved by an enlarged insulation space or pane spacing with an overall particularly space-saving construction. Heat loss through the cooking appliance door can be reduced and energy can be saved.
• the cooking appliance door according to the invention can be used particularly advantageously in cooking appliances with a thermal self-cleaning unit.
• the shape pointing into the cooking space can be heated up more and an advantageous cleaning result can be achieved.
• Improved insulation can reduce a temperature gradient and the associated thermal stress in the area of the molding.
• a spring effect can be achieved by obliquely running flanks, via which stresses in the glass can be compensated. Due to the reduced stresses in the area of the shaping and the stress equalization made possible by the spring action, inexpensive materials can be used, such as, in particular, borosilicate glass, soda-lime glass, etc. Glass ceramics could also be used without the cost advantage.
• the viewing window has only one shape, which extends over a large part of the opening of the cooking space.
• the shape advantageously has a distance of less than 4 mm to the side and to the bottom, and a distance of less than 6 mm to the contact flange, in particular in the case of a cooking appliance door pivotably mounted about a lower axis. The smallest possible outer area can be reached which is excluded from a pyrolysis process.
• a labyrinth effect can be achieved in particular by the smallest possible distance from the contact flange, specifically with regard to dirt constituents and with regard to heat or hot gases.
• the outer, cooler area can be shielded from dirt components and from hot gases, as a result of which contamination of the outer area can be reduced and burn-in of dirt components in the outer area can be avoided by a high temperature which is not sufficient for a pyrolysis process.
• low temperatures can be reached in the area of the contact flange or in the area of a seal, as a result of which inexpensive sealing materials can be used, such as, in particular, silicone, etc.
• the shape advantageously has a depth of between 10 and 35 mm, in which area good insulation can be achieved with an acceptable amount of installation space. Particularly at a depth of 35 mm, a particularly advantageous insulation is achieved, and the insulation improves only insignificantly from a depth of 35 mm. Furthermore, the shape advantageously has flanks with an angle between 90 ° and 55 °. A particularly effective labyrinth and spring effect can be achieved with a steep angle.
• the viewing pane is prestressed, in particular advantageously by means of a thermal or chemical process with a compressive stress on its surface, as a result of which the strength of the viewing pane can be increased. In the outer cooler area, the labyrinth effect that can be achieved with regard to heat, the pretension and the associated high strength can always be maintained.
• the shape can be completely arched or can advantageously have at least one flat area, as a result of which it can be produced in a particularly simple and cost-effective manner without the view being influenced by the viewing window.
• the second viewing pane can advantageously be designed with a shape pointing in the direction facing away from the cooking space become.
• the solution according to the invention can be used in numerous cooking appliances which appear sensible to a person skilled in the art, but is particularly advantageous in cooking appliances with a thermal self-cleaning unit, such as in particular in household ovens.
• FIG. 1 shows a schematically illustrated domestic oven from the front
• FIG. 2 shows a view of an oven door of the domestic oven from the inside
• 3 shows a schematic illustration of a section along the line III-III in FIG. 1
• FIG. 4 shows a schematic illustration of a section along the line IV-IV in FIG. 1.
• FIG. 1 shows a household oven which has a cooking space 11 in a housing 10.
• the cooking space 11 is delimited by a muffle 28 and has an opening 13 which is closed with an oven door (FIGS. 3 and 4).
• the oven door On its side facing the cooking chamber 11, the oven door has a viewing window 12 which completely covers the opening 13 of the cooking chamber 11 and forms a contact surface 27 with a contact flange 16 of the muffle 28, specifically with a silicone seal 29 fastened to the contact flange 16.
• the contact surface 27 is indicated in Fig. 1 and 2 with a dashed line.
• the lens 12 can be cleaned via a known thermal self-cleaning unit or pyrolysis unit arranged in the housing 10 of the household baking oven.
• the lens 12 is cup-shaped and has a shape 14 pointing in the direction of the cooking space 11, which extends over a large part of the opening 13 of the cooking space 11, and laterally a distance 15 of 2 mm, downwards a distance 17 of 2 mm and after has a distance 18 of 4 mm to the contact flange 16 at the top.
• the small distances 15, 17, 18 to the contact flange 16 result in an advantageous labyrinth effect to the outside with regard to dirt components and heat or hot gases.
• the formation 14 has a depth 19 of 30 mm and side flanks 21 with an angle 23 of 70 ° and flanks 20 on their top and bottom with an angle 22 of 80 °. After its flanks 20, 21, the formation 14 has a flat region 24, which forms a large part of the formation 14.
• the viewing pane 12 can additionally have a heat-reflecting coating and / or a suitable printing which specifically prevents the transparency of the pane.
• the shape 14 is molded onto the lens 12.
• the viewing window 12 is placed on a plate with an indentation corresponding to the shape and is heated in its flank area by heat sources until a flowable state occurs.
• the area forming the formation 14 is sucked into the indentation of the plate by negative pressure.
• the view- pane 12 is made of borosilicate glass and is thermally prestressed with compressive stresses on its surface.
• the oven door has two further windows 25, 30, namely a middle window 25 and an outer window 30 facing away from the cooking chamber 11.
• the windows 12, 25, 30 are held together by a carrier (not shown) and by plastic seals 31 , 32 almost airtight.
• the middle viewing pane 25 has a shape 26 pointing in the direction facing away from the cooking space 11, which has approximately the same height and width as the shape 14.
• the shape 14 and the shape 26 result in an advantageous insulating space 33 between the viewing panes 12, 25
• the middle lens can alternatively also be completely flat or can be omitted if the temperature requirements are reduced.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Electric Ovens (AREA)
• Electric Stoves And Ranges (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)
• General Preparation And Processing Of Foods (AREA)
• Cookers (AREA)
• Special Wing (AREA)
• Vending Machines For Individual Products (AREA)
• Baking, Grill, Roasting (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7659562

Family Applications (1)

Country Status (7)

Families Citing this family (8)

Family Cites Families (23)

• 2000
  • 2000-10-12 DE DE10050609A patent/DE10050609A1/de not_active Withdrawn
• 2001
  • 2001-10-04 AU AU2002221652A patent/AU2002221652A1/en not_active Abandoned
  • 2001-10-04 AT AT01986756T patent/ATE363632T1/de not_active IP Right Cessation
  • 2001-10-04 EP EP01986756A patent/EP1328762B1/fr not_active Expired - Lifetime
  • 2001-10-04 ES ES01986756T patent/ES2286155T3/es not_active Expired - Lifetime
  • 2001-10-04 DE DE50112573T patent/DE50112573D1/de not_active Expired - Lifetime
  • 2001-10-04 WO PCT/EP2001/011476 patent/WO2002031410A1/fr active IP Right Grant
• 2003
  • 2003-04-14 US US10/413,018 patent/US20060180141A1/en not_active Abandoned

Non-Patent Citations (1)

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