EP2519772B1 - Four - Google Patents

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Publication number
EP2519772B1
EP2519772B1 EP10790846.9A EP10790846A EP2519772B1 EP 2519772 B1 EP2519772 B1 EP 2519772B1 EP 10790846 A EP10790846 A EP 10790846A EP 2519772 B1 EP2519772 B1 EP 2519772B1
Authority
EP
European Patent Office
Prior art keywords
door
fan speed
opened
control unit
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.)
Not-in-force
Application number
EP10790846.9A
Other languages
German (de)
English (en)
Other versions
EP2519772A1 (fr
Inventor
Nilay Yalcinkaya
Burcak Aytekin
Ihsan Arslantekin
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 EP2519772A1 publication Critical patent/EP2519772A1/fr
Application granted granted Critical
Publication of EP2519772B1 publication Critical patent/EP2519772B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the present invention relates to an oven the cooking quality of which is provided not to be adversely affected when the door thereof is opened and which is provided to operate in a safe manner.
  • European Patent Application EP 1 342 414 A1 describes a method for determining the humidity content inside an oven comprising a cooking chamber, a heater, and a fan.
  • the producer determines the fan speed as a function of the cooking chamber temperature in dry air, which is recorded in the memory of a control unit as a characteristic line.
  • a temperature sensor measures the actual temperature of the air inside the cooking chamber and another sensor determines the instantaneous fan speed.
  • a fan speed which would occur at the respective temperature in a dry atmosphere is determined.
  • the difference between the actually measured fan speed and said determined fan speed is calculated, and the actual humidity is calculated from this according to a given formula.
  • the aim of the present invention is the realization of an oven the cooking quality of which is provided not to be adversely affected when the door thereof is opened and which is provided to operate in a safe manner.
  • the oven realized in order to attain the aim of the present invention comprises a sensor detecting instantaneous fan speed and a control unit calculating the amount of change in fan speed according to the data transmitted by the sensor.
  • the control unit compares the amount of change in fan speed with the limit amount of change in fan speed predetermined by the producer and saved in the memory thereof and decides that the door is opened when the amount of change in fan speed is equal to or greater than the limit amount of change in fan speed.
  • the control unit provides changes to be made in the cooking steps upon detecting that the door is opened.
  • the cooking quality is prevented from being affected adversely as a result of the door being opened and also user safety is guaranteed.
  • control unit stops the vapor spraying upon detecting that the door is opened.
  • the user is prevented from being harmed.
  • control unit provides the heaters to operate such as to compensate the temperature decrease in the cooking chamber occurring as a result of the door being opened when the door is closed again upon detecting that the door is opened.
  • the cooking quality is prevented from being affected adversely as a result of the door being opened.
  • the opening of the door is detected by monitoring the amount of change in fan speed, and unwanted situations such as the cooking quality being deteriorated, the user being in danger as a result of the door being opened are prevented.
  • the oven (1) comprises a body (2), a cooking chamber (3) located in the body (2), wherein foods to be cooked are placed, a door (4) providing access to the cooking chamber (3), at least one heater (5) providing the air in the cooking chamber (3) to be heated, a fan (6) moving the air heated by the heater (5), a motor (7) providing the fan (6) to be driven, at least one shaft (8) providing the drive provided by the motor (7) to be transferred to the fan (6) and a sensor (9) placed onto the motor (7) such as to face the shaft (8), detecting the instantaneous fan speed (N) ( Figure 1 ).
  • the oven (1) of the present invention furthermore comprises a control unit (10) which determines the amount of change in fan speed (DN) by calculating the difference between two consecutive instantaneous fan speed (N) measurements detected by the sensor (9) in the time period (ti) predetermined by the producer, which detects that the door (4) is opened when the amount of change in fan speed (DN) is at least as much as the limit amount of change in fan speed (DNlimit) predetermined by the producer and which accordingly provides changes to be made in cooking steps.
  • a control unit (10) which determines the amount of change in fan speed (DN) by calculating the difference between two consecutive instantaneous fan speed (N) measurements detected by the sensor (9) in the time period (ti) predetermined by the producer, which detects that the door (4) is opened when the amount of change in fan speed (DN) is at least as much as the limit amount of change in fan speed (DNlimit) predetermined by the producer and which accordingly provides changes to be made in cooking steps.
  • the instantaneous fan speed (N) is directly affected by the cooking chamber (3) temperature.
  • the instantaneous fan speed (N) increases as the cooking chamber (3) temperature increases during the cooking process.
  • the instantaneous fan speed (N) decreases as the cooking chamber (3) temperature decreases during the cooking process.
  • the fan speed (N) also decreases ( Figure 2 ).
  • the instantaneous fan speed (N) is measured by the sensor (9) and transmitted to the control unit (10).
  • the control unit (10) calculates the amount of change in fan speed (DN) by comparing the consecutive instantaneous fan speeds (N) with each other. For example, when the instantaneous fan speed (N1) at t1 and the instantaneous fan speed (N2) at t2 are transmitted to the control unit (10), the control unit (10) calculates the amount of change in fan speed (DN) as N2-N1.
  • the amount of change occurring in fan speed (DN) when the door (4) is opened predetermined as the result of experimental studies undertaken is saved as the limit amount of change in fan speed (DNlimit) to the control unit (10) memory by the producer.
  • the control unit (10) detects that the door (4) is opened when the amount of change in fan speed (DN) calculated by the control unit (10) is equal to or greater than the limit amount of change in fan speed (DNlimit) ( Figure 2 ). In this situation, the control unit (10) takes precautions to provide the cooking quality not to be deteriorated and to provide user safety. Thus, adverse effects that an external factor such as the opening of the door (4) creates on the cooking quality are eliminated. Moreover, safe conditions of use are provided by eliminating effects which can occur by the door (4) being opened and which can risk user safety.
  • control unit (10) stops the vapor spraying upon as it detects that the door (4) is opened.
  • the user safety is provided by stopping vapor diffusion from the cooking chamber (3) upon the opening of the door (4).
  • control unit (10) provides the heaters (5) to operate such as to compensate the temperature loss occurring in the cooking chamber (3), when the door (4) is closed again after detecting that the door (4) is opened.
  • adverse effect on the cooking quality that the opening of the door (4) causes is decreased.
  • the senor (9) detecting the instantaneous fan speed (N) is "Hall effect" type. Thus, the instantaneous fan speed (N) is detected more precisely.
  • the door (4) is detected as being open by monitoring the amount of change in fan speed (DN) calculated by the control unit (10) according to the instantaneous fan speed (N) and the cooking quality and the user safety are provided not to be adversely affected by the door (4) being opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)

Claims (4)

  1. Un four (1) comprenant
    - un corps (2),
    - une chambre de cuisson (3) qui est située dans le corps (2) et dans laquelle les aliments à cuire sont placés,
    - une porte (4) permettant l'accès dans la chambre de cuisson (3),
    - au moins un dispositif de chauffage (5) qui permet le chauffage de l'air dans la chambre de cuisson (3),
    - un ventilateur (6) qui remue l'air chauffé par le dispositif de chauffage (5),
    - un moteur (7) qui permet l'entraînement du ventilateur (6),
    - au moins un arbre (8) qui permet le transfert de l'entraînement fourni par le moteur (7) au ventilateur (6),
    - un capteur (9) qui est disposé sur le moteur (7) de manière à faire face au arbre (8) et qui détecte la vitesse de ventilateur instantanée (N),
    caractérisé en ce qu'une unité de commande (10) est configurée pour
    - déterminer la quantité de variation dans la vitesse de ventilateur (DN) en calculant la différence entre deux mesures consécutives de vitesse de ventilateur instantanée (N) détectées par le capteur (9) dans la période (ti) prédéterminée par le fabricant pour déterminer une diminution dans la vitesse de ventilateur (N) en raison d'une diminution soudaine dans la température de la chambre de cuisson (3) qui se produit lorsque la porte (4) est ouverte, - détecter que la porte (4) est ouverte lorsque ladite quantité de variation dans la vitesse de ventilateur (DN) déterminée par l'unité de commande (10) est égale ou supérieure à la quantité limite de variation dans la vitesse de ventilateur (DNlimit) prédéterminée par le fabricant et
    - permet la réalisation des modifications dans les étapes de cuisson lors de la détection que la porte est ouverte.
  2. Un four (1) selon la Revendication 1, caractérisé par l'unité de commande (10) qui est configurée pour arrêter la pulvérisation de la vapeur lorsque la porte (4) est ouverte.
  3. Un four (1) selon la Revendication 1 ou 2, caractérisé par l'unité de commande (10) qui est configurée pour permettre le fonctionnement des dispositifs de chauffage (5) de manière à compenser la perte de chaleur dans la chambre de cuisson (3) lorsque la porte (4) est refermée après que la porte (4) est détectée comme ouverte.
  4. Un four (1) selon l'une quelconque des revendications précédentes, caractérisé par le capteur à effet Hall (9).
EP10790846.9A 2009-12-30 2010-12-16 Four Not-in-force EP2519772B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200909984 2009-12-30
PCT/EP2010/069861 WO2011080087A1 (fr) 2009-12-30 2010-12-16 Four

Publications (2)

Publication Number Publication Date
EP2519772A1 EP2519772A1 (fr) 2012-11-07
EP2519772B1 true EP2519772B1 (fr) 2016-05-18

Family

ID=43628737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10790846.9A Not-in-force EP2519772B1 (fr) 2009-12-30 2010-12-16 Four

Country Status (4)

Country Link
EP (1) EP2519772B1 (fr)
ES (1) ES2587190T3 (fr)
PL (1) PL2519772T3 (fr)
WO (1) WO2011080087A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2896893A1 (fr) * 2014-01-17 2015-07-22 Electrolux Appliances Aktiebolag Procédé de fonctionnement d'un ventilateur de convection d'air d'un four de cuisson et four de cuisson
US9829201B2 (en) 2015-01-19 2017-11-28 Haier Us Appliance Solutions, Inc. Oven appliance and a method for operating an oven appliance

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231331A (ja) 1983-06-13 1984-12-26 Matsushita Electric Ind Co Ltd 自動加熱調理器
JPH0949637A (ja) * 1995-08-08 1997-02-18 Hitachi Home Tec Ltd 加熱調理器
EP1342414B1 (fr) * 2002-03-07 2006-05-31 ELOMA GmbH BEDARFSARTIKEL ZUR GEMEINSCHAFTSVERPFLEGUNG Procédé de détection de l' humidité dans un dispositif de traitement et préparation de produits alimentaires, et dispositif de traitement et préparation de produits alimentaires
US6772752B1 (en) * 2003-04-10 2004-08-10 Maytag Corporation Cooling system airflow sensor for a cooking appliance
JP2005282556A (ja) * 2004-03-26 2005-10-13 Hitachi Hybrid Network Co Ltd ファンモジュール
US20070246452A1 (en) * 2006-04-20 2007-10-25 Electrolux Home Products, Inc. Variable speed convection in cooking applications

Also Published As

Publication number Publication date
WO2011080087A1 (fr) 2011-07-07
PL2519772T3 (pl) 2016-11-30
ES2587190T3 (es) 2016-10-21
EP2519772A1 (fr) 2012-11-07

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