EP1213542B1 - Dispositif de commande de la consommation d'énergie d'un four - Google Patents

Dispositif de commande de la consommation d'énergie d'un four Download PDF

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Publication number
EP1213542B1
EP1213542B1 EP01204314A EP01204314A EP1213542B1 EP 1213542 B1 EP1213542 B1 EP 1213542B1 EP 01204314 A EP01204314 A EP 01204314A EP 01204314 A EP01204314 A EP 01204314A EP 1213542 B1 EP1213542 B1 EP 1213542B1
Authority
EP
European Patent Office
Prior art keywords
temperature
energy
oven
cavity
cooking
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
EP01204314A
Other languages
German (de)
English (en)
Other versions
EP1213542A2 (fr
EP1213542A3 (fr
Inventor
Bettina Kohn
Franck Grevet
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 AB
Original Assignee
Electrolux 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 AB filed Critical Electrolux AB
Priority to DK01204314T priority Critical patent/DK1213542T3/da
Publication of EP1213542A2 publication Critical patent/EP1213542A2/fr
Publication of EP1213542A3 publication Critical patent/EP1213542A3/fr
Application granted granted Critical
Publication of EP1213542B1 publication Critical patent/EP1213542B1/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
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat

Definitions

  • the present invention relates to a controller for controlling the amount of energy supplied to an oven cavity for cooking food and comprising temperature measuring means, energy control means, and means for maintaining a set temperature in the cavity, and timer means.
  • thermostat i.e. a device which connects the energy supply when the temperature in the oven cavity is below a set value and switches it off when the set temperature has been reached.
  • a stable temperature has been reached there is a regular cycling between on and off in order to compensate for heat losses to the environment.
  • the power is switched off, for instance by turning the thermostat setting to 0. The food is removed, and the oven is left to cool off, sometimes assisted by a built-in blower.
  • the document CH-A-678 996 shows an oven with a controller for controlling the amount of energy supplied to the oven cavity for cooking food, comprising temperature measuring means, energy control means, timer means and means for maintaining a set temperature in the cavity.
  • the applied control method allows energy savings at the end of a cooking process by switching off the energy supply a predetermined time before the end of the cooking process that a predetermined value of temperature is reached at the end of the cooking procedure. There is hence a need for a more efficient way of saving energy when using an oven.
  • the energy stored in the oven cavity is used until the lower temperature has been reached. It may then be determined if the food has been cooked to satisfaction, in which case the oven is switched off (manually) and the food removed. If this is not the case the cycle in the energy supply is repeated, until the cooking is finished.
  • the set temperature may be made automatically lower for the later part of the cooking in order to finish the cooking.
  • the lower temperature is in the neighbourhood of 100 °C. This means that cooking can usefully take place until this temperature is reached.
  • 100 °C is chosen as the lower temperature is that much cooking, in particular towards the end of the preparation, consists in heating and evaporating water.
  • the time and temperature defined process is in practice electronically controlled.
  • the time from start of the cooking to the first change to the second cycle (the first "first cycle") is dependent on the temperature setting, in that a higher setting makes a shorter first cycle.
  • the advantage of the new combined temperature and time controlled switching of the heating elements in an oven cavity is firstly the saving in energy during each use of the cavity in all cooking functions without any intervention or program from the users side.
  • the user prepares the food and sets the oven as usual.
  • the cooking result is not changed, only the energy consumption is reduced significantly. Energy is saved due to better exploitation of energy introduced into the system.
  • the heat transfer during the "second cycle" occurs mainly by radiation. This type of transfer in general distributes the energy evenly.
  • a temperature sensor 1 which is fitted in a conventional manner inside the cavity of an oven.
  • the temperature sensor provides the input to means for maintaining a set temperature in the cavity, in other words a controller which functions like a thermostat.
  • the temperature sensor also provides the input for energy control means which serve to cut the power supply to the oven cavity for a period when stable temperature conditions have been determined by regular swiching-on and switching-off in the thermostat circuit.
  • the time constants for heating an oven cavity may be individually calibrated for each cavity, and more sophisticated controllers will take into account the load of food inside the cavity for cooking.
  • Fig. 2 is seen the action of the energy control means for an oven cavity according to the invention.
  • the temperature function is shown in dependence of time. It will be observed that the temperature increases steeply until a first region of maintenance by means of the thermostat circuit is reached. At this stage the power is switched off, either until a pre-determined lower temperature has been reached, or for a pre-determined time. From that time or from the lower temperature the energy control means switch the power on again, and the temperature increases steeply until the set temperature has been reached and has stabilised, upon which the cycle repeats.
  • Each cycle contains a Maintenance phase, a Residual phase, and a Heat-up (reheat) phase.
  • the thin temperature curve shows the temperature in a conventional oven controlled only by thermostat circuit means.
  • the energy saving is shown by the curves representing the power averages for each of the phases.
  • the curve at (a) shows the initial full power supplied for the first heating up of the cavity, after which it falls to a maintenance value (b).
  • a maintenance value b.
  • the Residual phase the power falls to that consumed by ancillary equipment, such as the electronics, lamps, etc.
  • the initial value of power consumption occurs briefly, upon which it again falls to the maintenance value.
  • a traditional power controller for an oven cavity would have the same initial full power and a continuous maintenance power, but this would mean an overall higher energy consumption as compared to the controller according to the invention. This is demonstrated graphically by the drop in power during the Residual phase, from which has been subtracted the full power surge required in the Heat-up phase.
  • the rectangles Energy Saving represent an energy saving in each cycle according to the invention.
  • variable time start of the Residual phase
  • the variable time varies depending on the oven set temperature. The higher the set temperature, the earlier the first Residual phase starts.
  • the correlation between the cavity centre temperature and cooking time is negative. This embodiment secures good cooking results and to optimise the energy consumption for each cooking process.
  • the advantage of the new controlled switching of the heating elements in an oven cavity is that it saves energy during each use of the cavity for all cooking functions without any special instruction of program from the user's side.
  • the customer prepares the food and sets the oven as usual.
  • the cooking result is not changed, only there is a significant reduction of the energy consumed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Control Of Temperature (AREA)
  • Electric Ovens (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Drying Of Solid Materials (AREA)
  • Spectrometry And Color Measurement (AREA)

Claims (3)

  1. Dispositif de commande pour commander la quantité d'énergie fournie à une cavité de four pour faire cuire des aliments et comprenant des moyens de mesure de température, des moyens de commande d'énergie, et des moyens pour maintenir une température réglée dans la cavité, et des moyens de minuterie, dans lequel les moyens de commande d'énergie créent une alimentation en énergie cyclique, et lorsque des conditions de température stables ont été obtenues dans la cavité, les moyens de commande d'énergie coupent l'alimentation en énergie jusqu'à ce qu'une température inférieure prédéterminée ait été atteinte, après quoi les moyens de commande d'énergie allument l'alimentation en énergie pour obtenir et maintenir la température réglée jusqu'à ce que des conditions de température stables aient à nouveau été obtenues.
  2. Dispositif de commande selon la revendication 1, caractérisé en ce que les moyens de minuterie retardent le démarrage de l'alimentation en énergie cyclique lorsque la température réglée a été atteinte.
  3. Dispositif de commande selon la revendication 1, caractérisé en ce que la température prédéterminée inférieure est dans le voisinage de 100°C.
EP01204314A 2000-11-10 2001-11-12 Dispositif de commande de la consommation d'énergie d'un four Expired - Lifetime EP1213542B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01204314T DK1213542T3 (da) 2000-11-10 2001-11-12 Styreanordning for energioptagelse til en ovn

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200001685 2000-11-10
DKPA200001685 2000-11-10

Publications (3)

Publication Number Publication Date
EP1213542A2 EP1213542A2 (fr) 2002-06-12
EP1213542A3 EP1213542A3 (fr) 2003-06-18
EP1213542B1 true EP1213542B1 (fr) 2005-12-28

Family

ID=8159834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01204314A Expired - Lifetime EP1213542B1 (fr) 2000-11-10 2001-11-12 Dispositif de commande de la consommation d'énergie d'un four

Country Status (4)

Country Link
EP (1) EP1213542B1 (fr)
AT (1) ATE314615T1 (fr)
DE (1) DE60116244D1 (fr)
DK (1) DK1213542T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112214054A (zh) * 2019-07-10 2021-01-12 佛山市顺德区美的电热电器制造有限公司 烹饪电器及其加热控制方法与装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132304B4 (de) * 2001-07-06 2005-10-27 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betrieb eines Gargeräts
DE10240175A1 (de) 2002-08-30 2004-04-22 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betrieb eines Gargeräts
DE10313595A1 (de) * 2003-03-26 2004-10-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Garvorgangs und Gareinrichtung
DE10337326B4 (de) * 2003-07-16 2008-05-15 Teka Küchentechnik GmbH Verfahren und Steuervorrichtung zum Steuern eines wenigstens eine Garzone aufweisenden Gargerätes
DE102005047582B4 (de) * 2004-10-12 2007-10-11 Miele & Cie. Kg Verfahren zum Garen von Speisen in einen Garraum eines Gargeräts
CN101855498B (zh) * 2007-11-12 2012-03-21 阿塞里克股份有限公司 一种烤箱
DE102009003037A1 (de) * 2009-05-12 2010-11-18 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Durchführen eines Zubereitungsvorgangs für ein Lebensmittel
ES2579081T3 (es) * 2009-12-30 2016-08-04 Arçelik Anonim Sirketi Horno
WO2011080110A1 (fr) 2009-12-31 2011-07-07 Arcelik Anonim Sirketi Four
EP2538142A1 (fr) * 2011-06-22 2012-12-26 Electrolux Home Products Corporation N.V. Procédé de contrôle de la période de chauffage d'un four de cuisson
EP3400802A1 (fr) * 2017-05-08 2018-11-14 Electrolux Appliances Aktiebolag Procédé de régulation d'un processus de cuisson dans un four de cuisson
WO2023128907A1 (fr) * 2021-12-30 2023-07-06 Mamur Teknoloji Sistemleri San. A.S. Procédé de régulation de température d'un four

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1565336B2 (de) * 1965-09-17 1970-12-23 Bauknecht GEA Elektrotechnische Fabriken GmbH, 7012 Fellbach Verfahren und Vorrichtung zum Aufheizen des Speicherkernes eines Wärmespeicherofens
CH678996A5 (en) * 1989-05-31 1991-11-29 Electrolux Ag Procedure and device for heating food in oven - where oven is automatically switched off shortly before completion of cooking and heat is recovered while allowing temp. to fall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112214054A (zh) * 2019-07-10 2021-01-12 佛山市顺德区美的电热电器制造有限公司 烹饪电器及其加热控制方法与装置
CN112214054B (zh) * 2019-07-10 2022-02-25 佛山市顺德区美的电热电器制造有限公司 烹饪电器及其加热控制方法与装置

Also Published As

Publication number Publication date
EP1213542A2 (fr) 2002-06-12
EP1213542A3 (fr) 2003-06-18
DK1213542T3 (da) 2006-05-22
DE60116244D1 (de) 2006-02-02
ATE314615T1 (de) 2006-01-15

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