WO2017190796A1 - Appareil de cuisson à fonction de chauffage par micro-ondes - Google Patents

Appareil de cuisson à fonction de chauffage par micro-ondes Download PDF

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Publication number
WO2017190796A1
WO2017190796A1 PCT/EP2016/060178 EP2016060178W WO2017190796A1 WO 2017190796 A1 WO2017190796 A1 WO 2017190796A1 EP 2016060178 W EP2016060178 W EP 2016060178W WO 2017190796 A1 WO2017190796 A1 WO 2017190796A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooking appliance
coating
cavity
side wire
dielectric material
Prior art date
Application number
PCT/EP2016/060178
Other languages
English (en)
Inventor
Alper YESILCUBUK
Merve METIN
Sezgi YIKILMAZCINAR
Serdal Elmas
Metin Gur
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PCT/EP2016/060178 priority Critical patent/WO2017190796A1/fr
Priority to TR2017/06634A priority patent/TR201706634A2/tr
Publication of WO2017190796A1 publication Critical patent/WO2017190796A1/fr

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Classifications

    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6408—Supports or covers specially adapted for use in microwave heating apparatus

Definitions

  • the present invention relates to a cooking appliance, in particular to a cooking appliance which has a microwave heating function.
  • a cooking appliance with the microwave heating function generally comprises a cavity for receiving the food to be cooked by means of microwaves; a magnetron for generating the microwaves; a waveguide for guiding the microwaves into the cavity, wherein the waveguide has an aperture which opens into the cavity; a pair of side wire racks which are respectively disposed onto the opposite side walls of the cavity and adapted to support a tray at one or more different levels.
  • EP2757322A1 discloses a microwave oven.
  • a problem with the aforementioned prior art cooking appliance is that the metal objects inside the oven cavity generally pose the risk of spark generation when the microwave heating function is used.
  • the sparks generally cause loud noises and flashes of light which can easily disturb the users.
  • the sparks can also cause damages to the electrical devices or to the other components of the cooking appliance, and thus incur additional maintenance costs.
  • the heat of the sparks can easily set the cooking appliance on fire.
  • An objective of the present invention is to provide a cooking appliance which solves the aforementioned problems of the prior art in a cost-effective way and which enables an improved cooking efficiency and an improved safety.
  • the side wire racks each comprises a first coating which includes a dielectric material which is heat-resistant, wherein each first coating covers the respective side wire rack at least partly or entirely.
  • a major advantageous effect of the present invention is that the risk of spark generation inside the cavity has been eliminated or reduced as much as possible by virtue of the one or more first coatings on the side wire racks.
  • the risk of spark generation between neighboring horizontal/vertical wire sections in the side wire racks have been eliminated or reduced as much as possible.
  • the risk of spark generation between the side wire racks and the tray or the side walls of the cavity have also been eliminated or reduced as much as possible.
  • the risk of spark generation between the neighboring metallic surfaces that enclose the air gaps, if any, in the welding joints of the side wire racks has also been eliminated or reduced as much as possible. Thereby, the side wire racks, the tray, and the side walls of the cavity can be protected against the damages due to the spark generation.
  • the life of the electrical devices such as the magnetron and the microwave stirring device can be prolonged.
  • the safety of the cooking appliance and also the cooking efficiency of the cooking appliance have been improved.
  • Another major advantageous effect of the present invention is that the existing cooking appliances, in particular those having the side wire racks inside their cavity can be easily retrofitted with the first coatings without the need for any mechanical modifications to the components or to the molds used for the die-casting of the components. Thereby, the production costs can be reduced both in terms of material and labor.
  • Another major advantageous effect of the present invention is that the cooking appliance can be designed more compactly, and thus the space inside the cavity can be used more efficiently. With the present invention, the user satisfaction can be further increased.
  • the side wire racks are respectively attached to the opposite side walls of the cavity by means of attachment members which are made of metal material.
  • the attachment members each comprises a second coating which includes a heat-resistant dielectric material. The second coating covers the respective attachment member at least partly or entirely. This embodiment is particularly advantageous as the risk of spark generation between the attachment members and the side wire racks or the side walls of the cavity or the tray can be eliminated or reduced as much as possible by virtue of the second coatings.
  • the dielectric material of the first/second coating each has a dielectric strength that is greater than the dielectric strength of the air inside the waveguide.
  • the first coatings on the side wire racks and/or the second coatings on the attachment members are transparent. These embodiments are particularly advantageous when the side wire racks and the attachment members comprise noble metal plating such as chrome plating. Hence, the chrome plating can be seen by the user through the first/second coatings. Of course, other type of noble metal plating which are known to those skilled in the art may be used.
  • the dielectric material comprises silica-based material.
  • the silica-based material may be obtained through the sol-gel technique.
  • the silica-based material may be obtained from silicone resin.
  • the first/second coatings may comprise different dielectric materials having different dielectric strengths.
  • the dielectric material may comprise enamels, polymers, glasses, micas, or varnishes or the like. These embodiments are particularly advantageous as the dielectric material can be chosen in accordance with the operating conditions and the size and shape of the components inside the cavity.
  • the tray inside the cavity is made from a metal material and its surface is entirely enamelled.
  • This embodiment is particularly advantageous as the enamelled tray can eliminate or reduce the risk of spark generation inside the cavity.
  • the first/second coatings can effectively eliminate or reduce the risk of spark generation between the tray and the side wire racks or the attachment members.
  • Figure 1 – is a schematic perspective view of a cooking appliance with a microwave heating function according to an embodiment of the present invention.
  • Cooking appliance 1a Waveguide 2. Cavity 3. Side wire racks 3a. horizontal wire section 3b. vertical wire section 4. Side wall 5. Tray 6a. First coating 6b. Second coating 7. Attachment member
  • the cooking appliance (1) has at least a microwave heating function.
  • the cooking appliance (1) comprises: a cavity (2) for cooking the food by means of microwaves; a magnetron (not shown) for generating the microwaves; a waveguide (1a) for guiding the microwaves into the cavity (2), wherein the waveguide (1a) has an aperture (not shown) which opens into the cavity (2); a pair of side wire racks (3) which are respectively disposed onto the opposite side walls (4) of the cavity (2) and adapted to support a tray (5) at one or more different levels (Fig. 1).
  • the side wire racks (3) each comprises a first coating (6a) which includes a dielectric material which is heat-resistant, wherein each first coating (6a) covers the respective side wire rack (3) at least partly or entirely (Fig. 1).
  • each side wire rack (3) comprises horizontal wire sections (3a) and vertical wire sections (3b) (Fig. 1).
  • the horizontal wire sections (3a) respectively define the different levels for slidably supporting the tray (5).
  • horizontal wire sections (3a) and vertical wire sections (3b) are joined through welding joints (not shown).
  • the dielectric material of the first coating (6a) is transparent.
  • the side wire racks (3) each comprise a chrome plating underside of the respective first coating (6a).
  • the chrome plating can be seen through the transparent first coatings (6a).
  • the cooking appliance (1) further comprises: attachment members (7) for respectively attaching the side wire racks (3) to the opposite side walls (4) of the cavity (3).
  • the attachment members (7) are each made of metal material.
  • the attachment members (7) each comprises a second coating (6b) which includes a heat-resistant dielectric material. In this embodiment, the second coating (6b) covers the respective attachment member (7) at least partly or entirely (Fig. 1).
  • the dielectric material of the second coating (6b) is transparent.
  • the attachment members (7) each comprises a chrome plating underside of the respective second coating (6b).
  • the chrome plating can be seen through the transparent second coating (6a).
  • the dielectric material of the first coating (6a) and/or the second coating (6b) comprises silica-based material.
  • the silica-based material is obtained through the sol-gel technique. In an alternative embodiment, the silica-based material is obtained from silicone resin.
  • the dielectric material comprises enamel.
  • the cooking appliance (1) further comprises one or more trays (5).
  • the tray (5) is made from a metal material and its surface is entirely enamelled.
  • a major advantageous effect of the present invention is that the risk of spark generation inside the cavity (1) has been eliminated or reduced as much as possible by virtue of the one or more first coatings (6a) on the side wire racks (3) .
  • the risk of spark generation between neighboring horizontal/vertical wire sections (3a;3b) in the side wire racks (3) have been eliminated or reduced as much as possible.
  • the risk of spark generation between the side wire racks (3) and the tray (5) or the side walls (4) of the cavity (2) have also been eliminated or reduced as much as possible.
  • the risk of spark generation between the neighboring metallic surfaces that enclose the air gaps, if any, in the welding joints of the side wire racks (3) has also been eliminated or reduced as much as possible.
  • the side wire racks (3), the tray (5), and the side walls (4) of the cavity (2) can be protected against the damages due to the spark generation. Thereby, also the life of the electrical devices such as the magnetron and the microwave stirring device (not shown) can be prolonged.
  • the safety of the cooking appliance (1) and also the cooking efficiency of the cooking appliance (1) have been improved.
  • Another major advantageous effect of the present invention is that the existing cooking appliances, in particular those having the side wire racks (3) inside their cavity (2) can be easily retrofitted with the first/second coatings (6a,6b) without the need for any mechanical modifications to the components or to the molds used for the die-casting of the components. Thereby, the production costs can be reduced both in terms of material and labor.
  • Another major advantageous effect of the present invention is that the cooking appliance (1) can be designed more compactly, and thus the space inside the cavity (2) can be used more efficiently. With the present invention, the user satisfaction can be further increased. Other advantageous effects of the present invention can be taken from the above-described embodiments.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

La présente invention concerne un appareil de cuisson (1) ayant une fonction de chauffage par micro-ondes, comprenant : une cavité (2) permettant de cuire l'aliment au moyen de micro-ondes ; une paire de râteliers à fils latéraux (3) qui sont respectivement disposés sur les parois latérales (4) opposées de la cavité (2) et conçus pour supporter un plateau (5) à un ou plusieurs niveaux différents.
PCT/EP2016/060178 2016-05-06 2016-05-06 Appareil de cuisson à fonction de chauffage par micro-ondes WO2017190796A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2016/060178 WO2017190796A1 (fr) 2016-05-06 2016-05-06 Appareil de cuisson à fonction de chauffage par micro-ondes
TR2017/06634A TR201706634A2 (tr) 2016-05-06 2017-05-05 Mi̇krodalga isitma i̇şlevi̇ne sahi̇p bi̇r pi̇şi̇ri̇ci̇ ci̇haz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/060178 WO2017190796A1 (fr) 2016-05-06 2016-05-06 Appareil de cuisson à fonction de chauffage par micro-ondes

Publications (1)

Publication Number Publication Date
WO2017190796A1 true WO2017190796A1 (fr) 2017-11-09

Family

ID=55913634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/060178 WO2017190796A1 (fr) 2016-05-06 2016-05-06 Appareil de cuisson à fonction de chauffage par micro-ondes

Country Status (2)

Country Link
TR (1) TR201706634A2 (fr)
WO (1) WO2017190796A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143707A (en) * 1983-07-21 1985-02-13 Microwave Ovens Ltd Trivet for microwave oven
US6372290B1 (en) * 1997-07-05 2002-04-16 Miele & Cie. Gmbh. & Co. Method of making a temperature and scratch resistant anti-sticking coating
US20050217501A1 (en) * 2004-04-02 2005-10-06 Paul Hettich Gmbh & Co. Kg Bearing tray of a kitchen appliance
EP2757322A1 (fr) 2013-01-18 2014-07-23 Electrolux Home Products Corporation N.V. Système de grille latérale pour cavité de four
US20140283814A1 (en) * 2013-03-20 2014-09-25 General Electric Company Appliance shelving system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143707A (en) * 1983-07-21 1985-02-13 Microwave Ovens Ltd Trivet for microwave oven
US6372290B1 (en) * 1997-07-05 2002-04-16 Miele & Cie. Gmbh. & Co. Method of making a temperature and scratch resistant anti-sticking coating
US20050217501A1 (en) * 2004-04-02 2005-10-06 Paul Hettich Gmbh & Co. Kg Bearing tray of a kitchen appliance
EP2757322A1 (fr) 2013-01-18 2014-07-23 Electrolux Home Products Corporation N.V. Système de grille latérale pour cavité de four
US20140283814A1 (en) * 2013-03-20 2014-09-25 General Electric Company Appliance shelving system

Also Published As

Publication number Publication date
TR201706634A2 (tr) 2017-11-21

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