WO2011080087A1 - An oven - Google Patents

An oven Download PDF

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Publication number
WO2011080087A1
WO2011080087A1 PCT/EP2010/069861 EP2010069861W WO2011080087A1 WO 2011080087 A1 WO2011080087 A1 WO 2011080087A1 EP 2010069861 W EP2010069861 W EP 2010069861W WO 2011080087 A1 WO2011080087 A1 WO 2011080087A1
Authority
WO
WIPO (PCT)
Prior art keywords
door
fan speed
providing
fan
oven
Prior art date
Application number
PCT/EP2010/069861
Other languages
French (fr)
Inventor
Nilay Yalcinkaya
Burcak Aytekin
Ihsan Arslantekin
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 EP10790846.9A priority Critical patent/EP2519772B1/en
Priority to ES10790846.9T priority patent/ES2587190T3/en
Publication of WO2011080087A1 publication Critical patent/WO2011080087A1/en

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
    • F24C15/32—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.
  • 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 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. Thus, 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.
  • Figure 1 - is the sideways schematic view of an oven.
  • Figure 2 - is the graphic showing the change in fan speed by time in an oven.
  • 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
  • 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 (DNIimit) 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 (DNIimit) predetermined by the producer and which accordingly provides changes to be made in cooking steps.
  • the instantaneous fan speed (N) increases as the cooking chamber (3) temperature increases during the cooking process. Similarly, the instantaneous fan speed (N) decreases as the cooking chamber (3) temperature decreases during the cooking process. When the door (4) is opened, a sudden decrease in the cooking chamber (3) temperature occurs. Therefore, in this case the fan speed (N) also decreases ( Figure 2).
  • the instantaneous fan speed (N) is measured by the sensor (9) and
  • 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 (N 1) 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 (DNIimit) 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 (DNIimit) ( 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.
  • 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)

Abstract

The present invention relates to an oven (1) comprising 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).

Description

Description
AN OVEN
[0001] 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.
[0002] In ovens, some users need to control if the food being cooked is cooked or not by opening the oven door during the cooking process. When the door is opened, the internal temperature of the oven decreases and this situation affects the cooking quality adversely. Moreover, when the door is opened, hot air or vapor diffusion takes place and this situation causes the user to be harmed.
[0003] In the state of the art Japanese Patent Application No. JP59231331 , a cooking device comprising a control unit which provides the cooking process not to be affected adversely from the door being opened is described.
[0004] 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.
[0005] The oven realized in order to attain the aim of the present invention,
explicated in the first claim and the respective claims thereof, 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. Thus, the cooking quality is prevented from being affected adversely as a result of the door being opened and also user safety is guaranteed.
[0006] In an embodiment of the present invention, the control unit stops the vapor spraying upon detecting that the door is opened. Thus, the user is prevented from being harmed.
[0007] In another embodiment of the present invention, the 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.
Thus, the cooking quality is prevented from being affected adversely as a result of the door being opened.
[0008] By means of the present invention, 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.
[0009] The model embodiments relating to an oven realized in order to attain the aim of the present invention are illustrated in the attached figures, where:
[0010] Figure 1 - is the sideways schematic view of an oven.
[001 1] Figure 2 - is the graphic showing the change in fan speed by time in an oven.
[0012] The elements illustrated in the figures are numbered as follows:
1. Oven
2. Body
3. Cooking chamber
4. Door
5. Heater
6. Fan
7. Motor
8. Shaft
9. Sensor
10. Control unit
[0013] 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 ).
[0014] 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 (DNIimit) predetermined by the producer and which accordingly provides changes to be made in cooking steps.
[0015] 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. Similarly, the instantaneous fan speed (N) decreases as the cooking chamber (3) temperature decreases during the cooking process. When the door (4) is opened, a sudden decrease in the cooking chamber (3) temperature occurs. Therefore, in this case the fan speed (N) also decreases (Figure 2).
[0016] 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 (N 1) 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 (DNIimit) 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 (DNIimit) (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.
[0017] In an embodiment of the present invention, the control unit (10) stops the vapor spraying upon as it detects that the door (4) is opened. Thus, the user safety is provided by stopping vapor diffusion from the cooking chamber (3) upon the opening of the door (4).
[0018] In an embodiment of the present invention, the 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. Thus, adverse effect on the cooking quality that the opening of the door (4) causes is decreased.
[0019] In an embodiment of the present inventions, the sensor (9) detecting the instantaneous fan speed (N) is "Hall effect" type. Thus, the instantaneous fan speed (N) is detected more precisely.
[0020] By means of the present invention, 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.
[0021] It is to be understood that the present invention is not limited to the
embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims

Claims
1. An oven (1 ) comprising
- 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),
characterized by a control unit (10)
- determining 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,
- detecting 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 (DNIimit) predetermined by the producer and accordingly providing changes to be made in cooking steps.
2. An oven (1 ) as in Claim 1 , characterized by the control unit (10) stopping the vapor to be sprayed when the door (4) is opened.
3. An oven (1 ) as in Claim 1 or 2, characterized by the control unit (10) providing the heaters (5) to operate such as to compensate the heat loss in the cooking chamber (3), when the door (4) is closed again after the door (4) is detected as being open.
4. An oven (1 ) as in any one of the above Claims, characterized by the Hall effect type sensor (9).
PCT/EP2010/069861 2009-12-30 2010-12-16 An oven WO2011080087A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10790846.9A EP2519772B1 (en) 2009-12-30 2010-12-16 An oven
ES10790846.9T ES2587190T3 (en) 2009-12-30 2010-12-16 Oven

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2009/09984 2009-12-30
TR200909984 2009-12-30

Publications (1)

Publication Number Publication Date
WO2011080087A1 true WO2011080087A1 (en) 2011-07-07

Family

ID=43628737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/069861 WO2011080087A1 (en) 2009-12-30 2010-12-16 An oven

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2896893A1 (en) * 2014-01-17 2015-07-22 Electrolux Appliances Aktiebolag Method of operating an air convection fan of a cooking oven and cooking oven
US9829201B2 (en) 2015-01-19 2017-11-28 Haier Us Appliance Solutions, Inc. Oven appliance and a method for operating an oven appliance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231331A (en) 1983-06-13 1984-12-26 Matsushita Electric Ind Co Ltd Automatic heating and cooking unit
JPH0949637A (en) * 1995-08-08 1997-02-18 Hitachi Home Tec Ltd Heat-cooking apparatus
EP1342414A1 (en) * 2002-03-07 2003-09-10 eloma GmbH Grossküchentechnik Method for detecting the humidity in a device for treating and preparing food stuffs, and device for treating and preparing food stuffs
US6772752B1 (en) * 2003-04-10 2004-08-10 Maytag Corporation Cooling system airflow sensor for a cooking appliance
JP2005282556A (en) * 2004-03-26 2005-10-13 Hitachi Hybrid Network Co Ltd Fan module
US20070246452A1 (en) * 2006-04-20 2007-10-25 Electrolux Home Products, Inc. Variable speed convection in cooking applications

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231331A (en) 1983-06-13 1984-12-26 Matsushita Electric Ind Co Ltd Automatic heating and cooking unit
JPH0949637A (en) * 1995-08-08 1997-02-18 Hitachi Home Tec Ltd Heat-cooking apparatus
EP1342414A1 (en) * 2002-03-07 2003-09-10 eloma GmbH Grossküchentechnik Method for detecting the humidity in a device for treating and preparing food stuffs, and device for treating and preparing food stuffs
US6772752B1 (en) * 2003-04-10 2004-08-10 Maytag Corporation Cooling system airflow sensor for a cooking appliance
JP2005282556A (en) * 2004-03-26 2005-10-13 Hitachi Hybrid Network Co Ltd Fan module
US20070246452A1 (en) * 2006-04-20 2007-10-25 Electrolux Home Products, Inc. Variable speed convection in cooking applications

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199717, Derwent World Patents Index; AN 1997-189088, XP002633101 *
DATABASE WPI Week 200571, Derwent World Patents Index; AN 2005-686547, XP002633196 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2896893A1 (en) * 2014-01-17 2015-07-22 Electrolux Appliances Aktiebolag Method of operating an air convection fan of a cooking oven and cooking oven
US9829201B2 (en) 2015-01-19 2017-11-28 Haier Us Appliance Solutions, Inc. Oven appliance and a method for operating an oven appliance

Also Published As

Publication number Publication date
EP2519772A1 (en) 2012-11-07
ES2587190T3 (en) 2016-10-21
PL2519772T3 (en) 2016-11-30
EP2519772B1 (en) 2016-05-18

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