WO2023237209A1 - Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson - Google Patents

Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson Download PDF

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Publication number
WO2023237209A1
WO2023237209A1 PCT/EP2022/065831 EP2022065831W WO2023237209A1 WO 2023237209 A1 WO2023237209 A1 WO 2023237209A1 EP 2022065831 W EP2022065831 W EP 2022065831W WO 2023237209 A1 WO2023237209 A1 WO 2023237209A1
Authority
WO
WIPO (PCT)
Prior art keywords
baking tray
tubular heater
cooking
heater
temperature
Prior art date
Application number
PCT/EP2022/065831
Other languages
English (en)
Inventor
Stéphane Poiré
Original Assignee
V-Zug Ag
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 V-Zug Ag filed Critical V-Zug Ag
Priority to PCT/EP2022/065831 priority Critical patent/WO2023237209A1/fr
Publication of WO2023237209A1 publication Critical patent/WO2023237209A1/fr

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
    • F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
    • F24C15/166—Shelves, racks or trays inside ovens; Supports therefor with integrated heating means
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • H05B3/686—Heat-storage plates
    • 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
    • H05B3/688—Fabrication of the plates
    • 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
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to a baking tray for use in a cooking device , in particular an oven . Furthermore , the invention relates to a cooking device comprising said baking tray . Another part of the invention relates to a method for manufacturing said baking tray .
  • Baking trays are used for supporting foods inside a cooking chamber of a cooking device of a private household, in particular a baking oven or a steam oven .
  • the user Before inserting food into the cooking chamber, the user might preheat the baking tray inside the cooking chamber .
  • the user Before inserting food into the cooking chamber, the user might preheat the baking tray inside the cooking chamber .
  • the user In a second scenario , the user might not preheat the baking tray and might insert a cold baking tray together with the food into the cooking chamber .
  • the user might preheat a baking stone and uses it for a better cooking result .
  • the cooking result will be di f ferent in these three scenarios .
  • baking trays which comprise local heater elements for heating the baking tray inside the cooking chamber .
  • the baking tray is connected with a power source of the cooking device in order to operate the heater elements of the baking tray .
  • This arrangement accelerates the heating of the baking tray inside the cooking chamber .
  • the thermal ef ficiency of such baking trays is unsatis factory .
  • a baking stone can be equipped with local heater elements .
  • the problem to be solved by the present invention is therefore to provide a baking tray for a better cooking result in a cooking device .
  • a baking tray for use in a cooking device in particular a baking oven or a steam oven, comprises a bottom element made of aluminium alloy and a tubular heater .
  • “Made of aluminium alloy” means that the baking tray bottom element is made of an alloy in which aluminium is the predominant metal .
  • the “bottom element” is the supporting element for supporting the food inside a cooking chamber .
  • a tubular heater is a metal- sheathed and deformable heater with a round or oval cross-section .
  • the heater can be made of a NiCR alloy
  • the sheath material can be made of an aluminium alloy or CrNi steel .
  • An insulating material could be magnesium oxide .
  • aluminium is a very good heat conductor . Heat trans ferred from the tubular heater to the bottom element made of aluminium alloy is distributed quickly over the entire bottom element .
  • aluminium can be used for casting a baking tray in order to produce an optimally formed baking tray . Such a baking tray can be heated quickly inside a cooking chamber which leads to a better cooking result and a better thermal ef ficiency .
  • a Pi z za, Tarte Flambee or certain types of bread can be better cooked by using such a baking tray .
  • I f French fries are cooked on such a baking tray, they become crispy even i f the user does not turn the fries during cooking .
  • the tubular heater has the form of a wavy line and the tubular heater can extend over the entire bottom element . "Extend over the entire bottom element” means , that the tubular heater is distributed over the entire bottom element . There is no part of the bottom element which is not heated by the tubular heater .
  • the tubular heater with the form of a wavy line and an even distribution of the entire bottom element heats the bottom element uni formly such that equal cooking results can be expected everywhere on the baking tray .
  • the bottom element is a casting .
  • the bottom element is made by a manufacturing process in which a liquid aluminium alloy is poured into a mould, which contains a hollow cavity of the desired shape , and then allowed to solidi fy . Casting is used for making a complex shape of the baking tray .
  • the tubular heater is casted in the bottom element .
  • the tubular heater is surrounded by the casted aluminium alloy .
  • the tubular heater is arranged in the empty mould . Liquid aluminium alloy is poured into the mould such that liquid aluminium alloy surrounds the tubular heater at least partly and encloses the tubular heater .
  • the baking tray has an optimal heat trans fer from the tubular heater to the bottom element . Since the aluminium alloy surrounds the tubular heater, the heat trans fer area between the tubular heater and the casted aluminium alloy is very large . The baking tray can be heated very quickly .
  • At least 60% , in particular at least 80% , in particular at least 90% , of the outer surface of the tubular heater is surrounded by the bottom element . It is not necessary that the complete outer surface of the tubular heater is surrounded by the aluminium alloy . A good heat trans fer is ensured even i f only one part of the tubular heater touches the bottom element .
  • the bottom element comprises at least one heater rip enclosing a section of the tubular heater and/or at least one stability rip not enclosing a section of the tubular heater .
  • Heater rips enclose the tubular heater and trans fer the heat generated by the tubular heater to other parts of the bottom element .
  • Stability rips are additional rips arranged at the bottom element which do not enclose tubular heater but improve the mechanical stability of the bottom element .
  • the stability rips can comprise a wire or a tube , in particular made of steel .
  • the stability rips could be substituted by steel wire or steel tubes attached to the bottom element .
  • the baking tray comprises a temperature sensor .
  • the temperature sensor measures the temperature at at least one position of the baking tray .
  • the power of the tubular heater can be controlled more precisely using the temperature data generated by the temperature sensor .
  • the temperature sensor can be arranged closer to an edge of the baking tray than to the centre of the baking tray .
  • Arranging the temperature sensor in an outer area of the baking tray simpli fies the connection between the temperature sensor and a connecting element connecting the baking tray with the cooking device .
  • the temperature sensor is arranged at one of the at least one stability rips or is spaced from one of the at least one stability rips not more than 3 cm, in particular not more than 2 cm . Since the stability rip provides a good heat trans fer between di f ferent locations on the baking tray, the temperature sensor measures at the stability rip or close to the stability rip a temperature representing the temperature of another part , in particular a centre part , of the baking tray . It can be avoided that the temperature measures locally low values or locally high values of the temperature of the baking tray .
  • the temperature sensor is spaced at least 0 . 5 cm, in particular at least 1 cm, in particular at least 2 cm, from the heater rip .
  • a minimum distance to the heater rip ensures that the temperature sensor measures an average temperature of the bottom element and not a local high temperature caused by heat emitted by the tubular heater .
  • the tubular heater comprises a PTC-Heater, which is a positive temperature coef ficient heater, and/or the tube of the tubular heater is made of aluminium alloy or steel .
  • the baking tray comprises a connecting element , in particular one single connecting element , for electrically connecting the tubular heater and the temperature sensor with a cooking device , in particular a baking oven .
  • the connecting element connects the temperature sensor and the tubular heater together with the device control and the power source of the cooking device .
  • the cooking device comprises a receiving element for receiving the connecting element of the baking tray, wherein the receiving element is arranged at a back wall or at a side wall of the cooking chamber .
  • the device control can be adapted to limit the air temperature inside the cooking chamber to a first temperature i f the baking tray is arranged in the cooking chamber, and to a second temperature i f the baking tray is not arranged in the cooking chamber .
  • the second temperature is higher than the first temperature .
  • the cooking device comprises an input device , in particular a touch screen, adapted such that a user can select a cooking chamber air temperature and a baking tray temperature independently from each other via the input device .
  • the device control is adapted to identi fy, i f the temperatures selected by the user cannot be maintained or reached by the cooking device , in particular wherein the device control can communicate this identi fication to the user via an output device .
  • the invention is related to a method for manufacturing the baking tray described above .
  • the method comprises the following steps :
  • the method ensures that the tubular heater is enclosed by the aluminium alloy such that heat can ef ficiently be trans ferred from the tubular heater to the aluminium alloy .
  • the method comprises the step of applying a surface finish to the bottom element .
  • Fig . 1 shows a front view of a cooking device with a baking tray according to the invention
  • Fig . 3 shows a first sectional view of the baking tray
  • RECTIFIED SHEET (RULE 91)
  • ISA/EP Fig. 4 shows a second sectional view of the baking tray
  • Fig. 5a-5e show a method for manufacturing a baking tray according to the invention.
  • Fig. 1 shows a household cooking device with a view from the outside to the front.
  • the cooking device 1 is a baking oven.
  • the terms “left”, “right”, “behind”, “top”, “bottom” are understood from the perspective of a user with a front view as shown in Fig. 1.
  • the front of the cooking device 1 is defined as the position where the door 5 of the cooking device 1 is arranged.
  • the cooking device 1 comprises a housing 2 and a cooking chamber 3.
  • the cooking chamber 3 is arranged in the housing 2.
  • One or more food supports are arranged in the cooking chamber 3.
  • the food supports can be designed, for example, as a grid, a baking tray or the like.
  • the cooking device 1 shown in Fig. 1 comprises only one baking tray 4.
  • the cooking chamber 3 is accessible to the user via a door 5.
  • the door 5 comprises a door handle 6 with which the door 5 can be opened by hand.
  • a heating chamber is arranged behind the cooking chamber 3 and is separated from the cooking chamber 3 by a back wall 7.
  • the back wall 7 comprises air openings 8. Air is blown through theses air openings 8 between the cooking chamber 3 and the heating chamber by a fan arranged behind the back wall 7 in the heating chamber.
  • a tubular heater 14 is cast into the bottom element 11.
  • the tubular heater 14 is arranged on the bottom side of the baking tray 4 and has the form of a wavy line, i.e. the line runs with numerous turns.
  • the tubular heater 14 extends over the entire bottom element 11, i.e. over the entire baking tray 4. With other words, the tubular heater 14 is bent and arranged such that the bottom element 11 is homogeneously heated by the tubular heater 14.
  • Fig. 3a shows a detail view of Fig. 3. It shows a sectional view with the cross-section of the tubular heater 14.
  • the outer surface 15 of the tubular heater 14 is fully, i.e. 100% of the outer surface 15 of the tubular heater 14, surrounded by the bottom element 11. Heat can be transferred from the tubular heater 14 to the bottom element 11 via the whole circumference of the outer surface 15.
  • only one part of the tubular heater 14 could be surrounded by the bottom element 11. The other part could protrude downwards from the bottom element 11 and could be surrounded by air.
  • the letter embodiment would be thermally less efficient.
  • the part of the bottom element 11 which surrounds the tubular heater 14 and protrudes downwards from the bottom element 11 is defined as a heater rip 16.
  • the heater rip 16 follows the complete course of the tubular heater 14.
  • a temperature sensor 18 is arranged at the bottom side of the baking tray 4 . It is arranged on an outer part of the baking tray 4 , i . e . it is arranged closer to an edge 12 than to the centre 19 of the baking tray 4 . Furthermore , the temperature sensor 18 is spaced from the tubular heater 14 by distance 20 of 2 cm such that the tubular heater 14 does not distort the measurement of the temperature of the baking tray 4 by the temperature sensor 18 .
  • the centre line of the tubular heater 11 represents the heater 21 .
  • the heater 21 is a PTC-Heater which is enclosed by the tube 22 of the tubular heater 11 .
  • the tube 22 is made of steel . Magnesium oxide is enclosed in the tube 22 .
  • the connecting element 23 connects with a receiving element 24 arranged at the back wall 7 of the cooking chamber 3 .
  • the device control 25 limits the air temperature inside the cooking chamber 3 i f the baking tray 4 is inserted into the cooking chamber 3 .
  • the air temperature is limited to 250 ° C .
  • the device control 25 deactivates the tubular heater 14 i f the temperature sensor 18 measures a temperature exceeding a predefined temperature limit , for example 220 ° C .
  • Fig. 5b shows a closing part 32 which closes the mould 31.
  • the liquid aluminium alloy solidifies as shown in Fig. 5c.
  • the mould 31 and the closing part 32 are detached from casting 33 as shown in Fig. 5d.
  • Casting 33 comprises the bottom element 11 and the tubular heater
  • a surface finish 13 is applied on the top side of the casting 33 as shown in Fig. 5e.

Abstract

L'invention concerne un plateau de cuisson (4) destiné à être utilisé dans un dispositif de cuisson (1), en particulier un four de cuisson, comprend un fond (11) en alliage d'aluminium et un élément chauffant tubulaire (14).
PCT/EP2022/065831 2022-06-10 2022-06-10 Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson WO2023237209A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/065831 WO2023237209A1 (fr) 2022-06-10 2022-06-10 Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/065831 WO2023237209A1 (fr) 2022-06-10 2022-06-10 Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson

Publications (1)

Publication Number Publication Date
WO2023237209A1 true WO2023237209A1 (fr) 2023-12-14

Family

ID=82156438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/065831 WO2023237209A1 (fr) 2022-06-10 2022-06-10 Plateau de cuisson destiné à être utilisé dans un dispositif de cuisson et dispositif de cuisson comprenant un tel plateau de cuisson

Country Status (1)

Country Link
WO (1) WO2023237209A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648969C (de) * 1935-11-07 1937-08-12 Voigt & Haeffner Akt Ges Elektrisch beheizte Koch- und Heizplatte, insbesondere fuer Gluehtemperaturen
US3674982A (en) * 1970-11-09 1972-07-04 Rama Ind Heater Co Zone controlled cook oven
US20040182849A1 (en) * 2003-03-21 2004-09-23 Samsung Electronics Co., Ltd. Cooking apparatus
EP1288580B1 (fr) * 2001-08-29 2009-04-15 Whirlpool Corporation Four de cuisson
CN208144921U (zh) * 2017-12-12 2018-11-27 宁波峰亚电器有限公司 一种烙台底部设有隔热围框的家用电热烤盘
CN209003648U (zh) * 2018-07-11 2019-06-21 宁波市江北区创新电器有限公司 一种电烤炉
CN110772123A (zh) * 2018-07-31 2020-02-11 浙江苏泊尔家电制造有限公司 一种电加热组件、烹饪组件及厨房小家电
CN216048723U (zh) * 2021-11-13 2022-03-15 佛山法赛图温控设备有限公司 一种真空烘箱壁和托盘双加热装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648969C (de) * 1935-11-07 1937-08-12 Voigt & Haeffner Akt Ges Elektrisch beheizte Koch- und Heizplatte, insbesondere fuer Gluehtemperaturen
US3674982A (en) * 1970-11-09 1972-07-04 Rama Ind Heater Co Zone controlled cook oven
EP1288580B1 (fr) * 2001-08-29 2009-04-15 Whirlpool Corporation Four de cuisson
US20040182849A1 (en) * 2003-03-21 2004-09-23 Samsung Electronics Co., Ltd. Cooking apparatus
CN208144921U (zh) * 2017-12-12 2018-11-27 宁波峰亚电器有限公司 一种烙台底部设有隔热围框的家用电热烤盘
CN209003648U (zh) * 2018-07-11 2019-06-21 宁波市江北区创新电器有限公司 一种电烤炉
CN110772123A (zh) * 2018-07-31 2020-02-11 浙江苏泊尔家电制造有限公司 一种电加热组件、烹饪组件及厨房小家电
CN216048723U (zh) * 2021-11-13 2022-03-15 佛山法赛图温控设备有限公司 一种真空烘箱壁和托盘双加热装置

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