EP1611396B1 - Procede de fonctionnement d'un four de cuisson - Google Patents

Procede de fonctionnement d'un four de cuisson Download PDF

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Publication number
EP1611396B1
EP1611396B1 EP04721518A EP04721518A EP1611396B1 EP 1611396 B1 EP1611396 B1 EP 1611396B1 EP 04721518 A EP04721518 A EP 04721518A EP 04721518 A EP04721518 A EP 04721518A EP 1611396 B1 EP1611396 B1 EP 1611396B1
Authority
EP
European Patent Office
Prior art keywords
temperature
heating
muffle
phase
oven
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.)
Expired - Lifetime
Application number
EP04721518A
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German (de)
English (en)
Other versions
EP1611396A1 (fr
Inventor
Ramona Haberkamm
Martin Keller
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1611396A1 publication Critical patent/EP1611396A1/fr
Application granted granted Critical
Publication of EP1611396B1 publication Critical patent/EP1611396B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • 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
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated

Definitions

  • the invention relates to a method for operating a baking oven and to an oven for carrying out this method, provided with a closable, thermally insulated oven muffle, arranged with a circulating air blower disposed within a fan room of the oven muffle with at least one near the muffle walls outside the fan room thermal heating element and with a control device, with which the at least one heating element and the circulating air blower can be switched on and off in accordance with a predetermined temperature / time profile during the oven operation consisting of the heating phase and the heating phase.
  • the present invention is therefore the object of a method for operating a baking oven of the type mentioned in such a way that with simple tax technical means at the end of the heating phase, ie when switching off the heating elements or at the beginning of FortMap-control phase in the center of the oven muffle the set target temperature is maintained as close as possible to the cooking temperature.
  • This object is achieved according to the invention in a method of the type described above in that during the An Aviationphase the at least one heating element is preferably continuously connected and that the circulating air fan according to one of the predetermined shutdown temperature of the heating element at the end of the heating phase at least partially dependent time profile temporarily turned on becomes.
  • this single or multiple connection of the circulating air blower is only briefly z. B. with a turn-on of about 30 seconds.
  • the circulation fan is turned on at least once to one of the height of the shutdown temperature and / or the operating mode and arrangement of the at least one heating element and at least one more time to one by the temperature gradient of the respective Anußprofils during the Anußphase.
  • the circulation fan is turned on at least once to one of the height of the shutdown temperature and / or the operating mode and arrangement of the at least one heating element and at least one more time to one by the temperature gradient of the respective Anußprofils during the An.
  • FIG. 1 shows a schematic and perspective view of the cuboid oven muffle 5 of a baking oven, consisting of side muffle walls 6, 7, an upper muffle wall 8, a lower muffle wall 9 and a rear, vertical muffle 10.
  • a motor-driven circulating air blower 14 is arranged at the rear end of the Muffelraums 11 at a distance from the rear muffle wall 10th.
  • This fan room communicates with the rest of the muffle space 11 via lateral exhaust openings (not shown) in FIG FIG. 1 represented by air flow arrows 15.
  • a radiator heating element 16 also called top heat
  • a further heating element 17 is arranged as a so-called bottom heat.
  • air flow arrows 18 and 19 is in FIG. 1 indicated that from the circulating air fan 14, air flows in the direction of the aforementioned heating elements 16, 17 are heated there on the heating elements or on the adjacent muffle walls and sucked by the circulating air fan 14 via a central intake in the intermediate wall 12 of the fan chamber 13 again. In this case, an operation of heating elements within the fan chamber 13 is not provided.
  • a temperature sensor 20 which is spatially and functionally connected to a non-illustrated, conventional control device for the oven.
  • This temperature sensor 20 is located in the vicinity of the upper muffle wall 8 and is for example attached to the rear muffle wall 10 and penetrates the intermediate wall 12 of the fan chamber 13.
  • this temperature sensor 20 is - as usual - far outside the treatment center of the oven muffle 5, in which the food to be treated is located.
  • the oven muffle 5 is surrounded by a thermal insulation, not shown, and is tightly closed by a furnace door, also not shown, during the oven operation.
  • FIG. 2 illustrated by means of a set of curves, with which problem deals with the invention before lying.
  • the diagram shows - as well FIG. 3 - The process sequence of the oven with the abscissa as the time axis and the ordinate as the temperature axis.
  • the set of curves shows the curve 1, which shows the real temperature profile at the outside of the treatment center of the oven muffle 5 (FIG. FIG. 1 ) arranged temperature sensor 20 without, that during the heating phase 0 - t3, the circulating air blower 14 is turned on, so only the heating elements 16, 17 are continuously turned on.
  • the time t3 is the point in the temperature / time profile in which the heating elements 16, 17 at Reaching the Aufsortspitze be switched off for the first time (shutdown), the Anterrorismphase is completed and the FortMapphase t3 - tx begins with a known, cyclic control game of heating elements and circulating air blower, controlled by a conventional, not shown control device.
  • Curve 2 shows a desired, ideal course of the temperature profile at the temperature sensor with respect to a selected target temperature Tsoll in the treatment center, which is relatively far away from the real measured temperature at the temperature sensor at time t3, ie there is an overshoot of the temperature detected at the temperature sensor instead of the ideal temperature.
  • the curves in FIG. 2 clearly show that relatively much time would pass during the heating phase t3-tx in order to achieve the ideal temperature profile of curve 2 in the region tx in the mode of operation according to curve 1.
  • the curve 3 is intended to illustrate the ideal temperature profile in the treatment center of the oven, in which treatment center there is no temperature sensor of the control device. At time t3, this ideal treatment temperature is at least substantially close to the setpoint temperature Tset, and there is only a minimal difference to the ideal temperature of the ideal curve 2 at this time t3.
  • the curve 4 is to be clarified a corrected temperature / time profile according to the described invention, in which by preferably multiple entries of the circulating air blower 14 (FIG. FIG. 1 ) the temperature profile at the temperature sensor 20 at time t3 the ideal temperature profile according to curve 2 is approximated.
  • the corrected temperature curve achieves the ideal temperature profile in a shorter time, such as FIG. 2 clearly shows.
  • FIG. 3 Such a temperature / time profile is in FIG. 3 illustrated by the curve 5.
  • the circulation fan 14 (FIG. FIG. 1 ) at times t1 and t2 temporarily, z.
  • FIG. 3 shows in contrast to this by the curve 6, a temperature / time profile, as would be without the inventive method, ie here the Anatomkurve would rise continuously and continuously until a shutdown when reaching a Anatomspitze at the end of the heating phase.
  • Curve 5 illustrates the aforementioned activation of the circulating air blower at times t1 and t2.
  • the ideal time profile according to the invention is achieved in that the time profile is determined by the level of the switch-off temperature at t3 and / or by the operating mode and arrangement of the heating element or elements 16, 17 (FIG. FIG. 1 ).
  • this first switch-on time t1 in the time profile is a fixed percentage relative to the heating peak or the switch-off temperature at the end of the heating phase 0 - t3.
  • the second switch-on time t2 is preferably determined by the temperature gradient of the respective heating profile which is dependent on the selected setpoint or switch-off temperature.
  • the advantages of the present invention arise equally both in a temporal advance of the temperature at the temperature sensor compared to the temperature in the treatment center and vice versa in the time lag of the temperature at the temperature sensor with respect to the temperature in the treatment center.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Defrosting Systems (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Claims (6)

  1. Procédé pour l'exploitation d'un four de cuisson, doté d'un moufle (5) pouvant être fermé et isolé thermiquement, comprenant une soufflerie à circulation d'air (14) disposée à l'intérieur d'un espace de soufflerie (13) du moufle de four, au moins un élément chauffant (16, 17) thermique, disposé à proximité des parois de moufle (6 à 10) à l'extérieur de l'espace de soufflerie (13) et un dispositif de commande, avec lequel l'au moins un élément chauffant (16, 17) et la soufflerie à circulation d'air peuvent être connectés et déconnectés en fonction d'un profil de température/temps prédéfini pendant le fonctionnement du four comprenant une phase de préchauffage (0-t3) et une phase de poursuite de chauffage (t3-tx), caractérisé en ce que, pendant la phase de préchauffage (0-t3), l'au moins un élément de chauffage (16, 17) est connecté de préférence de façon permanente et en ce que la soufflerie à circulation d'air (14) est raccordée temporairement en fonction d'un profil de temps dépendant au moins partiellement de la température de déconnexion prédéfinie de l'élément de chauffage à la fin de la phase de préchauffage.
  2. Procédé selon la revendication 1, caractérisé en ce que le profil de temps est déterminé par le niveau de la température de déconnexion et/ou du mode de service et de l'agencement de l'au moins un élément de chauffage (16, 17).
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le profil de temps est déterminé par le gradient de température du profil de préchauffage respectif, dépendant de la température prescrite ou de la température de déconnexion choisie.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la soufflerie à circulation d'air (14) est connectée brièvement au moins deux fois pendant la phase de préchauffage (0-t3).
  5. Procédé selon les revendications 1 à 4, caractérisé en ce que, pendant la phase de préchauffage (0-t3), la soufflerie à circulation d'air (14) est connectée au moins une fois à un moment dépendant du niveau de la température de déconnexion et/ou du mode de service et de l'agencement de l'au moins un élément de chauffage (16, 17) et au moins une autre fois à un moment dépendant du gradient de température du profil de préchauffage respectif.
  6. Four de cuisson, en particulier pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un espace de soufflerie (13) avec une soufflerie à circulation d'air (14) est prévu à l'intérieur d'un moufle de four (5) thermiquement isolé et pouvant être fermé et au moins un élément de chauffage (16, 17) thermique est prévu à proximité des parois de moufle (6 à 10) et de préférence à l'extérieur de l'espace de soufflerie et en ce qu'un dispositif de commande, dont la sonde de température (20) se trouve à l'extérieur du centre de traitement du moufle de four (5), est conçu de telle sorte que, pendant une phase de préchauffage (0-t3) placée en amont d'une phase de poursuite de chauffage (t3, tx), du moufle de four (5), la soufflerie à circulation d'air (14) est raccordée temporairement en fonction d'un profil de temps dépendant au moins partiellement de la température de déconnexion prédéfinie de l'élément de chauffage à la fin de la phase de préchauffage (t3).
EP04721518A 2003-03-27 2004-03-18 Procede de fonctionnement d'un four de cuisson Expired - Lifetime EP1611396B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10313914A DE10313914A1 (de) 2003-03-27 2003-03-27 Verfahren zum Betreiben eines Backofens
PCT/EP2004/002859 WO2004085925A1 (fr) 2003-03-27 2004-03-18 Procede de fonctionnement d'un four de cuisson

Publications (2)

Publication Number Publication Date
EP1611396A1 EP1611396A1 (fr) 2006-01-04
EP1611396B1 true EP1611396B1 (fr) 2008-10-08

Family

ID=32946260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04721518A Expired - Lifetime EP1611396B1 (fr) 2003-03-27 2004-03-18 Procede de fonctionnement d'un four de cuisson

Country Status (6)

Country Link
US (1) US7309846B2 (fr)
EP (1) EP1611396B1 (fr)
AT (1) ATE410644T1 (fr)
DE (2) DE10313914A1 (fr)
ES (1) ES2314388T3 (fr)
WO (1) WO2004085925A1 (fr)

Families Citing this family (18)

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DE102006013806A1 (de) * 2006-03-24 2007-09-27 Werner & Pfleiderer Lebensmitteltechnik Gmbh Verfahren zum Betrieb eines Backofens mit einem umluftbeheizten Backraum, einer Umluftheizung und einem Umluftgebläse
DE102006048416A1 (de) * 2006-10-12 2008-04-30 BSH Bosch und Siemens Hausgeräte GmbH Temperatursteuervorrichtung für ein Haushaltsgerät
KR20080079069A (ko) * 2007-02-26 2008-08-29 삼성전자주식회사 조리기 및 그 제어방법
KR20090030974A (ko) * 2007-09-21 2009-03-25 삼성전자주식회사 조리장치 및 그 스팀청소 제어방법
KR101510380B1 (ko) * 2008-03-25 2015-04-14 엘지전자 주식회사 조리기기 및 그 제어방법
DE102008040936A1 (de) * 2008-08-01 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Backofen
US8198853B2 (en) * 2008-10-09 2012-06-12 Bsh Home Appliances Corporation Motor speed controller
US8836257B2 (en) * 2008-10-09 2014-09-16 Bsh Home Appliances Corporation Household appliance including a fan speed controller
US8304695B2 (en) * 2008-12-16 2012-11-06 Whirlpool Corporation Priority controlled multi-fan convection oven
US8097833B2 (en) * 2008-12-16 2012-01-17 Whirlpool Corporation Convection cooking in multi-fan convection oven
US8931400B1 (en) * 2009-05-28 2015-01-13 iDevices. LLC Remote cooking systems and methods
US20160116171A1 (en) * 2014-10-22 2016-04-28 General Electric Company Oven airflow control
DE102015225581A1 (de) * 2015-12-17 2017-06-22 Convotherm Elektrogeräte GmbH Verfahren zum Betreiben eines gewerblichen Gargeräts
ES2733979T3 (es) * 2016-03-01 2019-12-03 Adventys Calefacción por inducción magnética con espaciador
US10969118B2 (en) 2016-05-26 2021-04-06 Electrolux Home Products, Inc. Steam cooking appliance
CN216535005U (zh) 2020-04-06 2022-05-17 沙克忍者运营有限责任公司 烹饪系统
US11435089B2 (en) * 2020-09-02 2022-09-06 Haier Us Appliance Solutions, Inc. Retractable display for an oven appliance
CN117356590B (zh) * 2023-09-20 2024-05-31 广州市赛思达机械设备有限公司 一种隧道炉供热控制方法、装置、设备及存储介质

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Also Published As

Publication number Publication date
US20060237424A1 (en) 2006-10-26
EP1611396A1 (fr) 2006-01-04
US7309846B2 (en) 2007-12-18
DE502004008206D1 (de) 2008-11-20
ES2314388T3 (es) 2009-03-16
WO2004085925A1 (fr) 2004-10-07
DE10313914A1 (de) 2004-10-07
ATE410644T1 (de) 2008-10-15

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