EP3553385A1 - Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand eines haushaltsgeräts oder einer komponente für ein haushaltsgerät - Google Patents

Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand eines haushaltsgeräts oder einer komponente für ein haushaltsgerät Download PDF

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Publication number
EP3553385A1
EP3553385A1 EP18166340.2A EP18166340A EP3553385A1 EP 3553385 A1 EP3553385 A1 EP 3553385A1 EP 18166340 A EP18166340 A EP 18166340A EP 3553385 A1 EP3553385 A1 EP 3553385A1
Authority
EP
European Patent Office
Prior art keywords
wall
area
household appliance
matted
light
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.)
Granted
Application number
EP18166340.2A
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English (en)
French (fr)
Other versions
EP3553385B1 (de
Inventor
Tobias Schütz
Jürgen Feser
Terence TAN
Elina WESTMAN
Pontus Kåberg
Cris Tridello
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP18166340.2A priority Critical patent/EP3553385B1/de
Publication of EP3553385A1 publication Critical patent/EP3553385A1/de
Application granted granted Critical
Publication of EP3553385B1 publication Critical patent/EP3553385B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C15/06—Ornamental features, e.g. grate fronts or surrounds
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers

Definitions

  • the present invention relates to the field of household appliances having a front wall.
  • the invention also relates to a method for producing a front wall, of a household appliance or a front wall of a component for a household appliance, which component front wall being adapted to define a household appliance wall.
  • Household appliances for e.g. preparing or preserving food or for treating items like dishes, laundry, etc. are well known in prior art.
  • Such appliances have at least one side, in particular a front side, a user is facing when using or operating the appliance.
  • the side comprises a wall with an outer surface which is directed towards the user, and an inner surface which is directed towards the interior of the household appliance, i.e. outer and inner surfaces are arranged at the wall on opposite sides.
  • the wall is, at least partially, made of light-transmissive material, it may consist of or may comprise a glass sheet or a sheet of heat resistant or, respectively, chemically stable light-transmissive plastic.
  • Such glass components which may be substantially glass sheets, comprise flat and specular surfaces which are regularly soiled and smeared by the user during the operation of the household appliance, what is exceedingly occurring with oven doors when the user is preparing a meal and loading the oven chamber with opening the oven door. Due to the specific type of soil which may comprise grease, the cleaning is laborious for a user who wants to receive a cleaning result with surfaces free of streaks. Some users are bothered already by minor soiling like fingerprints. In addition, specular surfaces are unfavourable with respect to scratch resistance, since such kind of defect impairs the visual impression.
  • a household appliance comprising a front wall according to independent claim 1 and/or by a method for producing a front wall of a household appliance or a front wall of a component for a household appliance wall according to independent claim 10.
  • a household appliance comprising a front wall
  • Said front wall comprises an outer surface which a user is facing when using or operating the household appliance and an inner surface which is directed towards the interior of the household appliance, e. g. an oven cavity, a cooling or dishwashing compartment or a washing drum.
  • the front wall is at least partially made of light-transmissive material, preferably wherein said light-transmissive material consists of or comprises a glass sheet.
  • light-transmissive and nontransparent are both differentiated from “opaque” that shall be understood as completely light-tight with no light being able to pass through.
  • light-transmissive material and “nontransparent” shall comprise all kinds of material enabling light to pass through, at least to a small extent.
  • light-transmissive (or also “translucent) comprises also transparent material that allows an essentially clear view through the light-transmissive material
  • nontransparent is any light-transmissive material that covers the entire range of translucent material, starting from material that allows no clear view through it or at most a blurred view through it of an object located behind it to light-transmissive material that does not even allow to recognize any contours of an obeject located behind it.
  • the wall comprises at least a first portion or a first area of a light-transmissive material that is nontransparent or enables at most a blurred, an unclear or a bleary view through the light-transmissive material.
  • This may be understood as the first portion or first area comprising a region or regions extending two-dimensionally or three-dimensionally causing light to be partially reflected and/or absorbed and/or scattered.
  • Such a nontransparent first wall portion or area or blurred, unclear or bleary view through the first wall portion or area may be effected by this first portion or area being translucent in its entirety, i. e. all over its cross section.
  • the at least first portion or first area of the wall may be frosted, in particular the first portion or area is made of or comprises frosted material, e. g. frosted glass or any other type of diffuse transmissive material.
  • another embodiment of the invention may comprise a layer which causes light scattering which layer may be arranged at whichever cross section position of the wall.
  • a layer may also be a contact surface of two abutting layers of a laminated wall construction.
  • a particular preferred embodiment of the invention is defined by a wall which comprises a matted or satin-finished surface or a surface which is covered by a matted or satin-finished layer.
  • said surface is the outer surface of the wall.
  • the matted or satin-finished structure results in a slightly coarse condition of the outer surface. With such coarse surface structure, not only soiling will be concealed to some extent, this effect is also somewhat gained with small scratches. Thus, visual advantages are obtained with said matted or satin-finished surface.
  • the matted or satin-finished surface may be obtained by means of a mechanical treatment, in particular by a sandblasting, sanding or scratching of the surface.
  • a partial or zonal matting or frosting may be realized by using masks or the like covering zones which shall not be treated, respectively.
  • a cavity illumination means when a cavity illumination means is switched off as well, such clouding of the view may be to a high extent, while it may be reduced, and food inside the cavity may be better visible, when the illumination means is switched on.
  • Yet another embodiment may even provide a highly clouded oven door window, in particular when the oven is equipped with a camera monitoring the oven cavity, so that clear-transparency of the oven door is not needed.
  • the household appliance to comprise an outer surface of the wall to be matted or satin-finished or to be covered by a matted or satin-finished layer, and, in addition, the inner surface of the wall to be coated with a nontransparent layer, in particular a colour coat, or to be laminated with a nontransparent foil, e. g. with an adhesive film.
  • the wall preferably, comprises at least one second portion or second area enabling a clear view through the light-transmissive material.
  • enabling a clear view in this context means, light can pass through the wall, i. e. through the second portion or second area, without any reflection, absorption or scattering.
  • Said second portion or second area may be limpid or clear-transparent and may be of or may comprise glass material.
  • the wall comprises a marking, lettering or labelling which is defined by the at least one second portion or area being in contrast with the at least one first portion or area.
  • marking, lettering or labelling defining the information to be provided to the user, capturing the first portion or area, and the background for the information being characterized by the second portion or area - the first alternative -, or contrariwise, defining the second option and being the preferred one because of a clearer visibility to the user.
  • the invention may also cover a household appliance comprising a door closing a treatment compartment, like an oven cavity, a cooling compartment, a dishwashing chamber or a washing drum, or the like, which door comprises a door wall zone enabling the user to look into the interior of the treatment compartment, wherein the door wall, in particular the door wall zone, comprises said translucent or frosted sections, markings, labellings or letterings.
  • a specifically preferred embodiment provides such a household appliance with said door wall zone being clear-transparent and framed by a frame-like lateral face, which is matted or satin-frosted on its outside surface and preferably has a colour print on the door wall rear side.
  • the invention may cover also a household appliance comprising a control panel with a casing, the casing having a casing wall which comprises at least one section which is made of translucent or frosted material or which comprises a matted or satin-finished surface, and which also comprises at least one limpid or clear-transparent portion or area, what may be a window or a display area, and/or at least one limpid or clear-transparent visual zone for an indicating light or optical signal and/or at least one clear-transparent zone together with at least one translucent marking, labelling and/or lettering.
  • a household appliance comprising a control panel with a casing, the casing having a casing wall which comprises at least one section which is made of translucent or frosted material or which comprises a matted or satin-finished surface, and which also comprises at least one limpid or clear-transparent portion or area, what may be a window or a display area, and/or at least one limpid or clear-transparent visual zone for an indicating light or optical signal and/
  • the inventive solution provides according to independent claim 10 a process step during which the front wall is provided with at least a first portion or first area that is nontransparent or at most enables a blurred, an unclear or bleary view through said light-transmissive material arranged at or defining the first portion or first area.
  • the wall being provided with a first portion or a first area comprising a region or regions extending two-dimensionally or three-dimensionally, in which region(s) the light is partially reflected and/or absorbed and/or scattered when passing through.
  • a preferred method is characterized by a first portion or a first area which receives a matted or satin-finished surface or a surface which is covered by a matted or satin-finished layer.
  • the method is applied to the outer surface of the wall.
  • said process step wherever this method is applied, results in a slightly coarse condition of the outer surface, thus, ending up in said matted or satin-finished structure. With such coarse surface structure, not only specific soiling will be concealed to some extent, this effect is also somewhat gained with small scratches.
  • the surface of the wall may be matted, frosted or satin-finished by means of a mechanical treatment, in particular by a sandblasting, sanding or scratching of the surface.
  • a mechanical treatment in particular by a sandblasting, sanding or scratching of the surface.
  • a partial or zonal matting or frosting may be realized by using masks or the like covering zones which shall not be treated, respectively.
  • an etching by means of hydrofluoric acid may be favourable.
  • the wall is provided with at least one second portion or second area enabling a clear view through the light-transmissive material.
  • enabling a clear view in this context means, light can pass through the wall, i. e. through the second portion or second area, without any reflection, absorption or scattering.
  • Said second portion or second area may be limpid or clear-transparent and may be of or may comprise glass material.
  • the at least one second portion or second area is made in contrast with the at least one first portion or first area.
  • a preferred method for implementing a distinction of the first portion or first area from the second portion or second area is serigraphy or a similar technique using a pattern in order to have e. g. an etching medium applied to the surface in order to define the first portion or first area, or to keep such etching medium away from the surface in order to define the second portion or second area.
  • the method according to the invention may also comprise an integration of a marking, a lettering or a labelling into the wall. This may be obtained by the at least one second portion or area being contrasted to the at least one first portion or area.
  • This contrasting may comprehend both alternatives, i. e. the marking, lettering or labelling, defining the information to be provided to the user, capturing the first portion or area, and the background for the information being characterized by the second portion or area - the first alternative -, or contrariwise, defining the second option.
  • a specifically preferred method comprises the following process steps
  • At least one third portion or third area on a second surface of the wall, arranged on an opposite side to the first surface, is provided with a nontransparent layer, in particular a colour coat or is laminated with a nontransparent foil, e. g. an adhesive film.
  • a nontransparent layer in particular a colour coat or is laminated with a nontransparent foil, e. g. an adhesive film.
  • a process step of burning-in may finalize the treatment of the second surface.
  • the at least one third portion or third area may be arranged superposed with the first potion or first area.
  • FIG 1 shows a schematic illustration of a domestic oven.
  • the oven 1 comprises an oven base body 3 with an oven cavity 5 which is adapted to receive food to be cooked and/or baked.
  • the oven 1 further comprises an oven door 7 which closes the oven cavity 5 from a front side of the oven 1 and can be opened by pivoting downwardly around a horizontal axis A in order to place the food into the oven cavity 5 and closed in order to obtain a closed oven cavity 5.
  • a door handle 9 is arranged in a horizontal direction on a top side of the oven door 7.
  • the oven 1 further comprises a control panel 11, also arranged on the front side of the oven 1 and above the oven door 7. Oven door 7 and control panel 11 are arranged in flush alignment of their outer surfaces, thus jointly building a front wall of the oven 1.
  • the control panel 11 comprises a display and control window 13 including a main switch 15 and an electronic control and display unit 17 for displaying graphical information and receiving user inputs. Both main switch 15 and electronic control and display unit 17 are formed as touch control elements.
  • the oven door 7 is shown in FIG 2 in closer detail in a cross-sectional view.
  • the oven door 7 comprises a frame or any other structural element, for example a door bar and a set of door columns which may border the oven door 7 circumferentially.
  • the frame or set of door bars / door columns may build the supporting structural element of the oven door 7 by means of which the oven door 7 is attached to the base body 3 of the oven 1.
  • the oven door 7 further comprises at least a first and a second door wall element 7.1 and 7.2, in the illustrated example building an outer door glass 7.1 (facing a user in front of the oven 1) and an inner door glass 7.2 (facing the oven cavity 5).
  • a third door wall element, an intermediate door glass 7.3 is comprised in order to increase heat insolation characteristics of the oven door 7.
  • a door cover 19 is arranged on a top side of the door glasses 7.1, 7.2, 7.3.
  • both outer door glass 7.1 and control panel 11 comprise first areas with matted or frosted outer surfaces (indicated in FIGs 1 and 3 by dots) and second areas with outer surfaces which are without any matting, rather, these second areas are of clear-transparent structure, thus enabling a user to look through the glass material.
  • the casing or outer wall 11.1 of the control panel 11 is made of a glass material. Glass surfaces as such are usually soiling sensitive with respect to touches, i. e. fingermarks, etc., in particular when the oven is operated while preparing the meal. In order to conceal such fingerprints to some extent, the outer glass surfaces of the outer door glass 7.1 and control panel 11 are matted or frosted, in particular in those areas where touches usually take place.
  • the matted or frosted surface is implemented by means of etching technology, e. g. using hydrofluoric acid.
  • etching technology e. g. using hydrofluoric acid.
  • the outer surface receives a slightly coarse character, while untreated surfaces are more planar or mirror-like.
  • Other technologies for implementing the matted structure may be used as well, in particular mechanical treatment such like sandblasting, sanding or scratching.
  • screen printing or serigraphy technology is used. The manufacturing process is as follows.
  • a covering coat is printed on those areas of the outer surfaces of the outer door glass 7.1 and the control panel 11, which shall not receive a matted structure. Serigraphy is used for this printing. Thereafter, the outer surfaces of the outer door glass 7.1 and the control panel 11 run through an etching bath. All areas not covered by the covering coat are etched and receive a matted structure. In a third step the outer surfaces run through a purification bath in order to remove etchant and covering coat.
  • the outer door glass 7.1 is now described more specifically.
  • the outer door glass 7.1 is defining, together with the front wall or outer wall 11.1 of the control panel 11, a front wall of the oven 1.
  • the outer surface of the outer door glass 7.1 is subdivided substantially into two zones, a central window zone 7.1w and a frame zone 7.1f defining the window zone 7.1w periphally.
  • the window zone 7.1w is clear-transparent and allows the user to look into the interior of the oven in order to monitor the food arranged in the oven cavity 5 during the cooking or baking process.
  • the peripheral frame zone 7.1f is arranged outlying the access area of the oven cavity 5, thereby not limiting the insight to the oven cavity 5 but covering the oven cavity frame.
  • the outer surface of the frame zone 7.1f Since the area behind the frame zone 7.1f shall be hidden from the user's view, the outer surface of the frame zone 7.1f has a matted structure. Moreover, in order to further receive an opaque condition, the inner surface of the frame zone 7.1f, arranged opposite to the outer surface and, from user's position, on the rear side of the outer door glass 7.1, is colour printed to the same extent as the matted surface on the forefront.
  • the control panel 11 is now described. Also the outer wall 11.1 of the control panel 11 is substantially subdivided into two zones, the display and control window 13 and a basic zone 11.1b.
  • the display and control window 13 is arranged at the outer wall 11.1 centrally in horizontal direction and at the top in vertical direction. Similar as with the outer door glass 7.1 as described above, the two zones differ from each other with respect to the outer surface structure. While the display and control window 13 is clear-transparent, the basic zone 11.1b has a matted outer surface, again, received by the etching process as already described.
  • the basic zone 11.1b is also equipped with a colour print on the rear side in order to fully hide the technical equipment arranged behind the outer wall 11.1.
  • the display and control window 13 has a rear colour-printing, however, a central area 13c is relieved from colour-printing, since this central area 13c uncovers the user's view to the electronic control and display unit 17.
  • the colour-printed area of the display and control window 13 places the main switch 15.
  • an illumination means e. g. an LED
  • other symbols for e. g. operational status indications may be arranged in the display and control window 13, preferably next to the ON/OFF symbol.
  • FIG 4 illustrates another example for making use of the invention.
  • This figure shows a detail view of a marking, or more specifically a logo 21, designed by means of the contrast between areas with matted or frosted surface and areas with clear-transparent surfaces.
  • the logo 21, which in the example illustration is designed as a simple rhombus, is arranged in the centre of a bottom portion of the frame zone 7.1f and comprises a clear-transparent outer outline and a left hand half section of the rhombus, while the right hand half section is characterized by a matted or frosted surface.
  • the contrast between these two differently structured surfaces defines the marking.
  • a full-faced colour-printing on the rear side of the outer door glass 7.1 increases the contrastive effect.
  • each feature and each combination of features in the claims and used in the description may be used and claimed independently from the respective claimed subject matter, independently from claim dependencies and back-references, and independently from the claim category in which the feature is claimed.
  • one or more embodiments as set forth hereinbefore and/or from the annexed figures may be envisaged.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
EP18166340.2A 2018-04-09 2018-04-09 Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand des haushaltsgeräts oder einer komponente für das haushaltsgerät Active EP3553385B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18166340.2A EP3553385B1 (de) 2018-04-09 2018-04-09 Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand des haushaltsgeräts oder einer komponente für das haushaltsgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18166340.2A EP3553385B1 (de) 2018-04-09 2018-04-09 Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand des haushaltsgeräts oder einer komponente für das haushaltsgerät

Publications (2)

Publication Number Publication Date
EP3553385A1 true EP3553385A1 (de) 2019-10-16
EP3553385B1 EP3553385B1 (de) 2020-12-23

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EP18166340.2A Active EP3553385B1 (de) 2018-04-09 2018-04-09 Haushaltsgerät mit einer wand und verfahren zur herstellung einer wand des haushaltsgeräts oder einer komponente für das haushaltsgerät

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3838102A1 (de) * 2019-12-19 2021-06-23 Miele & Cie. KG Haushaltsgerät
EP4180723A1 (de) * 2021-11-10 2023-05-17 Miele & Cie. KG Haushaltgerät mit einer mit kreide beschreibbaren frontvorderfläche aus glas

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8701978U1 (de) * 1987-02-10 1987-07-23 Flachglas Ag, 8510 Fuerth, De
US20100139638A1 (en) * 2008-12-09 2010-06-10 Whirlpool Corporation Oven door lighting
DE102011115379A1 (de) * 2011-10-10 2013-04-11 Schott Ag Beschichtetes Glas- oder Glaskeramik-Substrat mit haptischen Eigenschaften
DE102014220457A1 (de) * 2014-10-09 2016-04-14 Schott Ag Verfahren zur Herstellung eines beschichteten Substrats, scheibenförmiges Substrat, umfassend wenigstens zwei mittels Erwärmen aufgebrachte Schichten und Verwendung des beschichteten Substrats
WO2016128372A1 (en) 2015-02-10 2016-08-18 Electrolux Appliances Aktiebolag Oven door and oven comprising an oven door

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012502B4 (de) * 2006-03-16 2010-11-25 Electrolux Home Products Corporation N.V. Garofen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8701978U1 (de) * 1987-02-10 1987-07-23 Flachglas Ag, 8510 Fuerth, De
US20100139638A1 (en) * 2008-12-09 2010-06-10 Whirlpool Corporation Oven door lighting
DE102011115379A1 (de) * 2011-10-10 2013-04-11 Schott Ag Beschichtetes Glas- oder Glaskeramik-Substrat mit haptischen Eigenschaften
DE102014220457A1 (de) * 2014-10-09 2016-04-14 Schott Ag Verfahren zur Herstellung eines beschichteten Substrats, scheibenförmiges Substrat, umfassend wenigstens zwei mittels Erwärmen aufgebrachte Schichten und Verwendung des beschichteten Substrats
WO2016128372A1 (en) 2015-02-10 2016-08-18 Electrolux Appliances Aktiebolag Oven door and oven comprising an oven door

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3838102A1 (de) * 2019-12-19 2021-06-23 Miele & Cie. KG Haushaltsgerät
EP4180723A1 (de) * 2021-11-10 2023-05-17 Miele & Cie. KG Haushaltgerät mit einer mit kreide beschreibbaren frontvorderfläche aus glas

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