EP3732397B1 - Cooker - Google Patents

Cooker Download PDF

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Publication number
EP3732397B1
EP3732397B1 EP18811206.4A EP18811206A EP3732397B1 EP 3732397 B1 EP3732397 B1 EP 3732397B1 EP 18811206 A EP18811206 A EP 18811206A EP 3732397 B1 EP3732397 B1 EP 3732397B1
Authority
EP
European Patent Office
Prior art keywords
cooker
frame
glass
outer glass
cooker according
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.)
Active
Application number
EP18811206.4A
Other languages
German (de)
French (fr)
Other versions
EP3732397A1 (en
Inventor
Bekir Ozyurt
Mehmet Marasli
Basak BENGU
Samet AKAN
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3732397A1 publication Critical patent/EP3732397A1/en
Application granted granted Critical
Publication of EP3732397B1 publication Critical patent/EP3732397B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F24C15/004—Windows not in a door
    • 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
    • F24C15/005—Coatings for ovens
    • 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
    • F24C15/08—Foundations or supports plates; Legs or pillars; Casings; Wheels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/011—Heaters using laterally extending conductive material as connecting means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings

Definitions

  • the present invention relates to a transparent cooker enabling visibility of the food products during cooking.
  • convectional ovens The ovens cooking food products by transferring the heat generated in a separate section in the oven to the cooking section by means of a fan are referred to as convectional ovens.
  • convectional ovens elements such as tray level, preheating temperature, and the temperature of the product to be cooked (the product being freshly prepared or taken from a refrigerator) are important for ideal cooking.
  • a cooker Since a major portion of an oven is enclosed, illumination is required in its interior. Problems arise in examining the properties of cooking food products such as its roasting state, as this illumination cannot be performed homogeneously on all sides.
  • a cooker is designed which is transparent on all sides.
  • US 2005/115954 A1 discloses an electrically conductive heated glass panel, for example an oven door panel.
  • US 6 037 572 A discloses heating and warming assemblies including an electrically resistive thin film and particularly well suited for use in heating devices and appliances such as ranges and griddles. The assemblies are also incorporated into heating panels for ovens.
  • GB 2 254 915 A discloses a heat-convection stove comprising an electric heat-convection control unit having four alloy posts connected at the four corners for mounting three glass side boards, a front panel and a base.
  • US 2008/083722 A1 discloses a heated food display for warm food product.
  • the aim of the present invention is to provide a cooker design visible from all directions.
  • Another aim of the present invention is to enable obtaining homogeneous cooking results by applying equal heating from all surfaces.
  • a further aim of the present invention is to coat an easily cleanable coating on inner and outer glasses.
  • Another aim of the present invention is to resolve the problem of non-visibility of an oven's interior due to illumination.
  • Yet another aim of the present invention is to provide a cooker design having a low sound power level thanks to having no movable parts.
  • the transparent cooker of the invention enabling visibility of the food products during cooking is defined by claim 1.
  • the transparent cooker of the invention comprises outer glasses positioned in the frame so as to face the exterior, for enclosing the main body of the cooker formed by the frames. Also provided are inner glasses positioned also in the frame, parallel to the outer glasses so as to have the empty space in between. The inner glasses and the outer glasses are fixed into the frame by means of the fastening piece provided in the empty space. Fixing is enabled by placing the inner glasses and the outer glasses into preferably two fitting slots formed by means of the protrusion disposed on the fastening piece. In this arrangement, the outer glasses and the inner glasses rest parallel to each other.
  • the outer glasses are coated with ITO (Indium tin oxide) material.
  • ITO Indium tin oxide
  • ITO is an electrically conductive and optically permeable fine film coating used as heat barriers. Heating in the transparent cooker of the invention is performed by ITO coating. This coating enables heating the outer glass, transmitting the heat to the inner glass and to the interior of the cooker therefrom, and thereby cooking the food product.
  • ITO coating can be applied in different preferred thicknesses to obtain distinct power levels in order to provide discrete cooking characteristics.
  • Each surface of said cooker consists of an outer glass and an inner glass positioned parallel to each other with an empty space in between.
  • the inner glass is coated with easily cleanable ETC coating on the surface facing the internal volume of the cooker, and with ITO having heating properties on the surface facing the empty space.
  • a cable channel is provided in the frame, in which the cables are disposed enabling electric transmission.
  • At least one door capable of opening and closing is provided on at least one preferred surface of the cooker. The user may open and close the door when he/she wishes to place food products in the cooking volume, or when he/she wishes to remove the food products from within the cooker.
  • the door structure is formed by parallel positioning of the ITO coated outer glass and the inner glass, and by their placement into the fitting slots in the frame.
  • the frame forms a solid structure by surrounding the inner glass and the outer glass from their edges.
  • the surface preferred as the door is connected to the other surfaces by a hinged mechanism.
  • the outer glass and the inner glass placed in the frame are separated from each other and are fixed by means of teflon pieces used as the fastening piece.
  • the teflon pieces provide electrical insulation as well as form the fitting slots to fit the outer glasses and the inner glasses.
  • Copper plates are provided as busbars all along the preferred edges of each outer glass of the transparent cooker. These copper plates may be mechanically compressed between the conductive fastening piece and the outer glasses, or being fixed by a clamp-like structure. By means of the cable channel, the electric cables connected to said busbars, are collected on a single corner and are extended to the exterior of the cooker.
  • the cooker is configured to enable varying cooking applications or cooking in separate sections within the same cooking compartment.
  • the external appearance of the cooker is enabled to be dimmed by means of electrochromic coating of the outer glass.
  • the empty space between the outer glass and the inner glass is vacuumed to provide thermal insulation.
  • the frame is made of metal material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Ovens (AREA)
  • Surface Treatment Of Glass (AREA)

Description

    TECHNICAL FIELD
  • The present invention relates to a transparent cooker enabling visibility of the food products during cooking.
    • PRIOR ART
  • The ovens cooking food products by transferring the heat generated in a separate section in the oven to the cooking section by means of a fan are referred to as convectional ovens. In convectional ovens, elements such as tray level, preheating temperature, and the temperature of the product to be cooked (the product being freshly prepared or taken from a refrigerator) are important for ideal cooking.
  • However, a limited window area is left in convectional ovens to see the cooking compartment. It is a major problem to view all sides of particularly the larger food products from this window area. The capability to view the cooking food products consists a significant criterion in buying decisions of customers. However, the producers intend to keep this area limited due to technical limitations.
  • Since a major portion of an oven is enclosed, illumination is required in its interior. Problems arise in examining the properties of cooking food products such as its roasting state, as this illumination cannot be performed homogeneously on all sides. In the present invention, a cooker is designed which is transparent on all sides.
  • Another problem in ovens is having delimited heater orientations. In static cooking, cooking is performed from the upper and the lower surfaces, and a heater causing roasting marks on food products due to radiance, is experienced quite often. Therefore, Turbo and Surf cooking methods are developed. These methods have high sound power levels due to the utilized fans and their air flow speeds.
  • State of the art Chinese utility model no. CN2307511 mentions a fully transparent steam cooker. In said appliance, a steam container is disposed in a compartment provided on the lower portion of a steam chamber.
  • US 2005/115954 A1 discloses an electrically conductive heated glass panel, for example an oven door panel.
  • US 6 037 572 A discloses heating and warming assemblies including an electrically resistive thin film and particularly well suited for use in heating devices and appliances such as ranges and griddles. The assemblies are also incorporated into heating panels for ovens.
  • GB 2 254 915 A discloses a heat-convection stove comprising an electric heat-convection control unit having four alloy posts connected at the four corners for mounting three glass side boards, a front panel and a base.
  • US 2008/083722 A1 discloses a heated food display for warm food product.
  • None of the state of the art documents include a solution such as the one in the present invention.
    • BRIEF DESCRIPTION OF THE INVENTION
  • The aim of the present invention is to provide a cooker design visible from all directions.
  • Another aim of the present invention is to enable obtaining homogeneous cooking results by applying equal heating from all surfaces.
  • A further aim of the present invention is to coat an easily cleanable coating on inner and outer glasses.
  • Another aim of the present invention is to resolve the problem of non-visibility of an oven's interior due to illumination.
  • Yet another aim of the present invention is to provide a cooker design having a low sound power level thanks to having no movable parts.
    • DETAILED DESCRIPTION OF THE INVENTION
  • In its most basic form, the transparent cooker of the invention enabling visibility of the food products during cooking is defined by claim 1.
  • The transparent cooker of the invention comprises outer glasses positioned in the frame so as to face the exterior, for enclosing the main body of the cooker formed by the frames. Also provided are inner glasses positioned also in the frame, parallel to the outer glasses so as to have the empty space in between. The inner glasses and the outer glasses are fixed into the frame by means of the fastening piece provided in the empty space. Fixing is enabled by placing the inner glasses and the outer glasses into preferably two fitting slots formed by means of the protrusion disposed on the fastening piece. In this arrangement, the outer glasses and the inner glasses rest parallel to each other.
  • The outer glasses are coated with ITO (Indium tin oxide) material. ITO is an electrically conductive and optically permeable fine film coating used as heat barriers. Heating in the transparent cooker of the invention is performed by ITO coating. This coating enables heating the outer glass, transmitting the heat to the inner glass and to the interior of the cooker therefrom, and thereby cooking the food product. In addition, it is also possible to design the outer glass and the inner glass as heaters in a desired power level while maintaining their transparency. ITO coating can be applied in different preferred thicknesses to obtain distinct power levels in order to provide discrete cooking characteristics.
  • Each surface of said cooker consists of an outer glass and an inner glass positioned parallel to each other with an empty space in between. The inner glass is coated with easily cleanable ETC coating on the surface facing the internal volume of the cooker, and with ITO having heating properties on the surface facing the empty space.
  • A cable channel is provided in the frame, in which the cables are disposed enabling electric transmission. At least one door capable of opening and closing is provided on at least one preferred surface of the cooker. The user may open and close the door when he/she wishes to place food products in the cooking volume, or when he/she wishes to remove the food products from within the cooker. The door structure is formed by parallel positioning of the ITO coated outer glass and the inner glass, and by their placement into the fitting slots in the frame. The frame forms a solid structure by surrounding the inner glass and the outer glass from their edges. In a preferred embodiment of the invention, the surface preferred as the door is connected to the other surfaces by a hinged mechanism.
  • In a preferred embodiment of the invention, the outer glass and the inner glass placed in the frame, are separated from each other and are fixed by means of teflon pieces used as the fastening piece. The teflon pieces provide electrical insulation as well as form the fitting slots to fit the outer glasses and the inner glasses.
  • Copper plates are provided as busbars all along the preferred edges of each outer glass of the transparent cooker. These copper plates may be mechanically compressed between the conductive fastening piece and the outer glasses, or being fixed by a clamp-like structure. By means of the cable channel, the electric cables connected to said busbars, are collected on a single corner and are extended to the exterior of the cooker.
  • Since all of the outer glasses can be operated simultaneously or in varying sequences, the cooker is configured to enable varying cooking applications or cooking in separate sections within the same cooking compartment.
  • According to the invention, the external appearance of the cooker is enabled to be dimmed by means of electrochromic coating of the outer glass.
  • In another preferred embodiment of the invention, the empty space between the outer glass and the inner glass is vacuumed to provide thermal insulation.
  • In another embodiment of the invention, the frame is made of metal material.
  • In the design of the invention, food products are cooked equally on all sides because of performing a heating distributed equally on all surfaces. In addition, noise and motion based problems are not encountered as movable parts are not present.

Claims (9)

  1. A cooker enabling visibility of the food products during cooking, comprising
    - at least one frame forming the main body,
    - at least one fastening piece provided in gaps in the frame, forming fitting slots by protrusions provided on the fastening piece,
    - at least one inner glass suitable to be placed in the fitting slots on the side of the internal volume of the cooker where cooking is performed,
    - at least one outer glass suitable to be placed in the fitting slots on the side of the external volume of the cooker,
    - at least one empty space interposed between the outer glasses and the inner glasses with the outer glasses and the inner glasses placed in the fitting slots so as to be parallel to each other,
    - at least one cable channel enabling electric cables provided in the frame and connected to busbars provided in the frame, to be collected in a single corner and to be extended to the exterior,
    - at least one door capable of opening and closing, formed by joining at least a frame, an outer glass and an inner glass characterized by
    - each surface of said cooker consisting of an outer glass and an inner glass so that the internal volume is visible from all directions and
    - the outer glass coated with electrochromic material.
  2. A cooker according to claim 1, wherein a vacuumed empty space is disposed between the outer glass and the inner glass.
  3. A cooker according to claim 1, comprising a frame made of metal material.
  4. A cooker according to claim 1, comprising the outer glass coated with indium tin oxide.
  5. A cooker according to claim 1, comprising the inner glass coated with an easy cleanable coating on the surface facing the internal volume, and with ITO coating on the surface facing the empty space.
  6. A cooker according to claim 1, wherein heating is performed by the busbars provided in the frame and the ITO coating on the outer glass.
  7. A cooker according to claim 1, comprising the fastening piece made of Teflon material.
  8. A cooker according to claim 1, wherein copper plates as busbar are provided on at least two edges of each outer glass.
  9. A cooker according to claim 8, comprising a copper plate mechanically compressed between the fastening piece and the outer glass.
EP18811206.4A 2017-12-25 2018-11-26 Cooker Active EP3732397B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2017/21677A TR201721677A2 (en) 2017-12-25 2017-12-25 Transparent Cooker Design
PCT/EP2018/082558 WO2019129450A1 (en) 2017-12-25 2018-11-26 Transparent cooker design

Publications (2)

Publication Number Publication Date
EP3732397A1 EP3732397A1 (en) 2020-11-04
EP3732397B1 true EP3732397B1 (en) 2022-11-02

Family

ID=64556883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18811206.4A Active EP3732397B1 (en) 2017-12-25 2018-11-26 Cooker

Country Status (4)

Country Link
EP (1) EP3732397B1 (en)
PL (1) PL3732397T3 (en)
TR (1) TR201721677A2 (en)
WO (1) WO2019129450A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254915B (en) * 1991-04-15 1995-05-03 Kwei Tang Chang Electric heat-convection stove with transparent housing
US6037572A (en) * 1997-02-26 2000-03-14 White Consolidated Industries, Inc. Thin film heating assemblies
US5940579A (en) * 1997-02-26 1999-08-17 White Consolidated Industries, Inc. Capacitive leakage current cancellation for heating panel
US7265323B2 (en) * 2001-10-26 2007-09-04 Engineered Glass Products, Llc Electrically conductive heated glass panel assembly, control system, and method for producing panels
US7700894B2 (en) * 2006-10-06 2010-04-20 Hatco Corporation Heated food display
FR2918534A1 (en) * 2007-07-03 2009-01-09 Saint Gobain ELECTRIC OVEN WITH RADIANT GLASS PLATES
EP2604740B1 (en) 2011-12-16 2015-12-16 Electrolux Home Products Corporation N.V. Laundry machine with lighting apparatus for drum lighting
US20150297029A1 (en) * 2014-04-16 2015-10-22 Spectrum Brands, Inc. Cooking appliance using thin-film heating element

Also Published As

Publication number Publication date
EP3732397A1 (en) 2020-11-04
TR201721677A2 (en) 2019-07-22
PL3732397T3 (en) 2023-03-20
WO2019129450A1 (en) 2019-07-04

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