EP3051209A1 - A method for performing a cooking process in a cooking oven - Google Patents

A method for performing a cooking process in a cooking oven Download PDF

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Publication number
EP3051209A1
EP3051209A1 EP15153228.0A EP15153228A EP3051209A1 EP 3051209 A1 EP3051209 A1 EP 3051209A1 EP 15153228 A EP15153228 A EP 15153228A EP 3051209 A1 EP3051209 A1 EP 3051209A1
Authority
EP
European Patent Office
Prior art keywords
heating element
fan
oven
during
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.)
Withdrawn
Application number
EP15153228.0A
Other languages
German (de)
French (fr)
Inventor
Francesco Lampitelli
Ferdinando VIVACQUA
Guido CAPERNA
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 Appliances AB
Original Assignee
Electrolux Appliances 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 Appliances AB filed Critical Electrolux Appliances AB
Priority to EP15153228.0A priority Critical patent/EP3051209A1/en
Priority to EP16153578.6A priority patent/EP3051210B1/en
Publication of EP3051209A1 publication Critical patent/EP3051209A1/en
Withdrawn legal-status Critical Current

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    • 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

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

Abstract

The present invention relates to a method for performing a cooking process in a cooking oven (10) including at least one oven cavity (12), at least one top heating element (14), at least one ring heating element (16) and at least one fan (18), wherein the at least one ring heating element (16) encloses the at least one fan (18) and/or an air stream from said fan (18). The cooking process includes a preheating phase and a regulation phase. During the preheating phase the temperature in the oven cavity increases from an ambient temperature to a set cooking temperature value. During the preheating phase the top heating element (14) and the ring heating element (16) are activated alternatingly, while the fan (18) is switched on during said preheating phase. The regulation phase comprises at least one heating cycle and at least one non-heating cycle. During the heating cycle of the regulation phase the top heating element (14) and the ring heating element (16) are activated alternatingly, while the fan (18) is switched off during said heating cycle. During the non-heating cycle of the regulation phase the top heating element (14) and the ring heating element (16) are deactivated, while the fan (18) is switched on during said non-heating cycle. Further, the present invention relates to a corresponding cooking oven, in particular a household cooking oven.

Description

  • The present invention relates to a method for performing a cooking process in a cooking oven. Further, the present invention relates to a corresponding cooking oven, in particular a household cooking oven. Moreover, the present invention relates to a computer program for causing a computer to perform the above cooking process.
  • A conventional cooking oven includes a number of heating elements arranged inside or beside an oven cavity. Usually, the cooking oven includes a ring heating element, a top heating element, a bottom heating element and/or a fan. For example, the top heating element and the ring heating element are arranged inside the oven cavity, while the bottom heating element is arranged below a bottom wall of said oven cavity.
  • During the cooking process the heating elements and the fan are activated and deactivated according to a predetermined scheme. There are a lot of schemes for activating and deactivating the heating elements and the fan. According to such schemes one or more heating elements are activated simultaneously, alternatingly and/or serially. However, many methods for activating and deactivating the heating elements and the fan result in relative high energy consumption.
  • It is an object of the present invention to provide a method for performing a cooking process, which method allows reduced energy consumption. It is further an object of the present invention to provide a corresponding cooking oven.
  • The object is achieved by the method for performing a cooking process in a cooking oven according to claim 1.
  • According to the present invention the method is provided for performing a cooking process in a cooking oven including at least one oven cavity, at least one top heating element, at least one ring heating element and at least one fan, wherein the at least one ring heating element encloses the at least one fan and/or an air stream from said fan, and wherein
    • the cooking process includes a preheating phase and a regulation phase,
    • during the preheating phase the temperature in the oven cavity increases from an ambient temperature to a set cooking temperature value,
    • during the preheating phase the top heating element and the ring heating element are activated alternatingly, while the fan is switched on during said preheating phase,
    • the regulation phase comprises at least one heating cycle and at least one non-heating cycle,
    • during the heating cycle of the regulation phase the top heating element and the ring heating element are activated alternatingly, while the fan is switched off during said heating cycle, and
    • during the non-heating cycle of the regulation phase the top heating element and the ring heating element are deactivated, while the fan is switched on during said non-heating cycle.
  • During the preheating phase the top heating element and the ring heating element are activated alternatingly, while the fan is switched on during the whole preheating phase. Then, during the heating cycle of the regulation phase the top heating element and the ring heating element are also activated alternatingly, but the fan is switched off during said heating cycle. In contrast, during the non-heating cycle of the regulation phase the top heating element and the ring heating element are deactivated, while the fan is switched on during said non-heating cycle. This concept reduces the cooking time and energy consumption.
  • In particular, the regulation phase comprises alternating heating cycles and non-heating cycles.
  • For example, the heating cycle of the regulation phase is activated, if the temperature in the oven cavity goes below a predetermined lower temperature threshold value.
  • In a similar way, the non-heating cycle is activated, if the temperature in the oven cavity excesses a predetermined upper temperature threshold value.
  • Preferably, the speed of the at least one fan is constant. This contributes to low complexity, since the fan is driven at only one constant speed.
  • Further, during the preheating phase any further heating element or further heating elements, for example a top heating element or a bottom heating element, is or are deactivated. Thus, only the top heating element and the ring heating element are activated alternatingly.
  • Moreover, during the regulation phase any further heating element or further heating elements, for example a top heating element or a bottom heating element, is or are deactivated. Thus, the top heating element and the ring heating element are the only alternatingly activated heating elements.
  • Preferably, the method is provided for a cooking oven, in which at least one top heating element is arranged inside the oven cavity and below a top wall of said oven cavity and/or at least one ring heating element is arranged inside the oven cavity and in front of a rear wall of said oven cavity.
  • In particular, the method is controlled by an electronic control circuit, by a computer program or by a combination of both.
  • Further, the present invention relates to a cooking oven including at least one oven cavity, at least one top heating element, at least one ring heating element and at least one fan, wherein the at least one ring heating element encloses the at least one fan and/or an air stream from said fan, wherein the cooking oven is provided for a method mentioned above.
  • In particular, the cooking oven includes at least one control unit for performing the method mentioned above.
  • For example, the top heating element is arranged inside the oven cavity and below a top wall of said oven cavity.
  • Further, the ring heating element is arranged inside the oven cavity and in front of a rear wall of said oven cavity, while the fan is arranged in or in front of said rear wall.
  • Moreover, the cooking oven includes at least one top heating element and/or at least one bottom heating element, wherein the top heating element is arranged above a top wall of the oven cavity and the bottom heating element is arranged below a bottom wall of the oven cavity.
  • At last, the present invention relates to a computer program stored in a computer usable medium, comprising computer readable program means for causing a computer to perform a method mentioned above.
  • Novel and inventive features of the present invention are set forth in the appended claims.
  • The present invention will be described in further detail with reference to the drawing, in which
    • FIG 1
    illustrates a schematic perspective view at an oven cavity of a cooking oven according to a preferred embodiment of the present invention,
    FIG 2
    illustrates an example of a schematic time pattern during a pre-heating phase of a cooking process in the cooking oven according to the preferred embodiment of the present invention, and
    FIG 3
    illustrates an example of a schematic time pattern during a regulation phase of the cooking process in the cooking oven according to the preferred embodiment of the present invention.
  • FIG 1 illustrates a schematic perspective view at an oven cavity 12 of a cooking oven 10 according to a preferred embodiment of the present invention. The cooking oven 10 includes a top heating element 14, a ring heating element 16 and a fan 18. In this example, the cooking oven 10 includes additionally a bottom heating element 20.
  • The top heating element 14 and the ring heating element 16 are arranged inside the oven cavity 12. The top heating element 14 is arranged below a top wall 22 of the oven cavity 12. The top heating element 14 extends substantially in a horizontal plane and parallel to the top wall 22 of the oven cavity 12. The ring heating element 16 is arranged in front of a rear wall 24 of the oven cavity 12. The ring heating element 16 extends substantially in a vertical plane and parallel to the rear wall 24 of the oven cavity 12. The fan 18 is arranged in the rear wall 24 of the oven cavity 12. An air stream from the fan 18 into the interior of the oven cavity 12 extends substantially perpendicular to the plane of the rear wall 24 of the oven cavity 12. The ring heating element 16 encloses the fan 18 and/or the air stream from said fan 18. The bottom heating element 20 is arranged below a bottom wall 26 of the oven cavity 12.
  • The cooking oven 10 is provided for performing a cooking process including a preheating phase and a regulation phase. During the preheating phase the temperature in the oven cavity increases from the ambient temperature Ta to a set cooking temperature value Ts. During the regulation phase the set cooking temperature Ts has been achieved and is controlled to be maintained. The regulation phase includes at least one heating cycle and at least one non-heating cycle. For example, the regulation phase includes alternating heating cycles and non-heating cycles. The heating cycles occur, if the temperature in the oven cavity goes below a predetermined lower temperature threshold value Tl. The non-heating cycles occur, if the temperature in the oven cavity excesses a predetermined upper temperature threshold value Tu. In particular, the set cooking temperature value Ts is between the predetermined lower temperature threshold value Tl and upper temperature threshold value Tu.
  • During the preheating phase the top heating element 14 and the ring heating element 16 are activated alternatingly, while the fan 18 is switched on during the whole preheating phase. During the heating cycles of the regulation phase the top heating element 14 and the ring heating element 16 are activated alternatingly, while the fan 18 is switched off during all heating cycles of the regulation phase. During the non-heating cycles of the regulation phase the top heating element 14 and the ring heating element 16 are deactivated, while the fan 18 is switched on during all non-heating cycles of the regulation phase.
  • Since the fan 18 is switched off during the heating cycles of the regulation phase, the spillage heat losses are limited. For example, said spillage heat losses occur through the gasket and holes of the oven cavity 12. However, when the top heating element 14 and the ring heating element 16 are deactivated during the non-heating cycles of the regulation phase, then the fan 18 is switched on and spreads the present heat onto the food stuff.
  • FIG 2 illustrates an example of a schematic time pattern during the pre-heating phase of the cooking process in the cooking oven 10 according to the preferred embodiment of the present invention.
  • The time pattern shows activated states ON and deactivated states OFF of the top heating element 14, the ring heating element 16 and the fan 18 as function of the time t. Further, the time pattern shows the development of the temperature T in the oven cavity 12. A first diagram 32 relates to the activation and deactivation of the top heating element 14. A second diagram 34 relates to the activation and deactivation of the ring heating element 16. A third diagram 36 relates to the activation and deactivation of the fan 18.
  • The preheating phase is subdivided into a plurality of duty cycle periods 30. During the preheating phase the duty cycle periods 30 are identical. During a long first part of each duty cycle period 30 the top heating element 14 is activated, while the ring heating element 16 is deactivated. In contrast, during a short second and last part of each duty cycle period 30 the top heating element 14 is deactivated, while the ring heating element 16 is activated. The fan 18 is activated during each duty cycle period 30. Thus, during the preheating phase the top heating element 14 and the ring heating element 16 are activated alternatingly, while the fan 18 is switched on during the complete preheating phase. During the preheating phase the temperature T increases continuously, but remains lower than the set cooking temperature value Ts.
  • FIG 3 illustrates an example of a schematic time pattern during the regulation phase of the cooking process in the cooking oven 10 according to the preferred embodiment of the present invention.
  • This time pattern shows also the activated states ON and the deactivated states OFF of the top heating element 14, the ring heating element 16 and the fan 18 as function of the time t. The development of the temperature T in the oven cavity 12 during the regulation phase is also shown in this time pattern. The first diagram 32 relates to the activation and deactivation of the top heating element 14. The second diagram 34 relates to the activation and deactivation of the ring heating element 16. The third diagram 36 relates to the activation and deactivation of the fan 18.
  • The regulation phase is also subdivided into the plurality of the duty cycle periods 30, wherein during the long first part of each duty cycle period 30 the top heating element 14 is activated and the ring heating element 16 is deactivated, and wherein during the short second and last part of each duty cycle period 30 the top heating element 14 is deactivated and the ring heating element 16 is activated. However, the duty cycle periods 30 with the alternating activation of the top heating element 14 and ring heating element 16 are only relevant, if the temperature T is lower than the upper temperature threshold value Tu. The fan 18 is deactivated, if the temperature T is lower than the upper temperature threshold value Tu. After the temperature T has reached or exceeded the upper temperature threshold value Tu, then the top heating element 14 and ring heating element 16 are deactivated, while the fan 18 is activated. The top heating element 14 and the ring heating element 16 remain deactivated and the fan 18 remains activated, as long as the temperature T in the oven cavity 12 is between the upper temperature threshold value Tu and the lower temperature threshold value Tl, wherein said temperature T decreases continuously. If the temperature T in the oven cavity 12 reaches or goes below the lower temperature threshold value Tl, then the top heating element 14 and ring heating element 16 are activated again, while the fan 18 is deactivated again. Thus, during the regulation phase the top heating element 14 and the ring heating element 16 are activated alternatingly and the fan 18 is deactivated, if the temperature T in the oven cavity 12 has to be increased. In contrast, during the regulation phase the top heating element 14 and the ring heating element 16 are deactivated and the fan 18 is activated, if the temperature T in the oven cavity 12 has a sufficiently high value.
  • The method for performing the cooking process according to the present invention provides improvements for cooking meat, fish and gratins. The inventive method combines the benefits of the hot air function and the grill based function. The hot air function reduces the cooking time, while the grill based function creates a crust on the surface of the food stuff. In particular, the hot air function is suitable for food stuff containing high humidity. The hot air function is provided by ring heating element 16 and the fan 18, while the grill based function is provided by the top heating element 14.
  • The inventive method reduces the energy consumption. The hot air function optimizes the temperature distribution. The radiation effect of the grill based function is used and the hot air function allows a fast heating up of the oven cavity. The combination of the grill based function and the hot air function results in lower energy consumption.
  • Further, the cooking oven 10 includes a control unit for performing the method for performing the cooking process. For example, the method is controlled by an electronic control circuit, by a computer program or by a combination of both.
  • Although an illustrative embodiment of the present invention has been described herein with reference to the accompanying drawing, it is to be understood that the present invention is not limited to that precise embodiment, and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.
    • List of reference numerals
    • 10
    cooking oven
    12
    oven cavity
    14
    top heating element
    16
    ring heating element
    18
    fan
    20
    bottom heating element
    22
    top wall
    24
    rear wall
    26
    bottom wall
    30
    duty cycle period
    32
    first diagram, state of the top heating element
    34
    second diagram, state of the ring heating element
    36
    third diagram, state of the fan
    ON
    activated state
    OFF
    deactivated state
    T
    temperature
    Ta
    ambient temperature
    Ts
    set cooking temperature value
    Tu
    upper temperature threshold value
    Tl
    lower temperature threshold value
    t
    time

Claims (15)

  1. A method for performing a cooking process in a cooking oven (10) including at least one oven cavity (12), at least one top heating element (14), at least one ring heating element (16) and at least one fan (18), wherein the at least one ring heating element (16) encloses the at least one fan (18) and/or an air stream from said fan (18), and wherein
    - the cooking process includes a preheating phase and a regulation phase,
    - during the preheating phase the temperature in the oven cavity increases from an ambient temperature to a set cooking temperature value,
    - during the preheating phase the top heating element (14) and the ring heating element (16) are activated alternatingly, while the fan (18) is switched on during said preheating phase,
    - the regulation phase comprises at least one heating cycle and at least one non-heating cycle,
    - during the heating cycle of the regulation phase the top heating element (14) and the ring heating element (16) are activated alternatingly, while the fan (18) is switched off during said heating cycle, and
    - during the non-heating cycle of the regulation phase the top heating element (14) and the ring heating element (16) are deactivated, while the fan (18) is switched on during said non-heating cycle.
  2. The method according to claim 1,
    characterized in that
    the regulation phase comprises alternating heating cycles and non-heating cycles.
  3. The method according to claim 1 or 2,
    characterized in that
    the heating cycle of the regulation phase is activated, if the temperature in the oven cavity (12) goes below a predetermined lower temperature threshold value.
  4. The method according to any one of the preceding claims,
    characterized in that
    the non-heating cycle is activated, if the temperature in the oven cavity (12) excesses a predetermined upper temperature threshold value.
  5. The method according to any one of the preceding claims,
    characterized in that
    the fan (18) is driven at one constant speed.
  6. The method according to any one of the preceding claims,
    characterized in that
    during the preheating phase any further heating element or further heating elements, for example a top heating element or a bottom heating element (20), is or are deactivated.
  7. The method according to any one of the preceding claims,
    characterized in that
    during the regulation phase any further heating element or further heating elements, for example a top heating element or a bottom heating element (20), is or are deactivated.
  8. The method according to any one of the preceding claims,
    characterized in that
    the method is provided for a cooking oven (10), in which at least one top heating element (14) is arranged inside the oven cavity (12) and below a top wall (22) of said oven cavity (12) and/or at least one ring heating element (16) is arranged inside the oven cavity (12) and in front of a rear wall (24) of said oven cavity (12).
  9. The method according to any one of the preceding claims,
    characterized in that
    the method is controlled by an electronic control circuit, by a computer program or by a combination of both.
  10. A cooking oven (10) including at least one oven cavity (12), at least one top heating element (14), at least one ring heating element (16) and at least one fan (18), wherein the at least one ring heating element (16) encloses the at least one fan (18) and/or an air stream from said fan (18),
    characterized in that
    the cooking oven (10) is provided for a method according to any one of the claims 1 to 9.
  11. The cooking oven (10) according to claim 10,
    characterized in that
    the cooking oven (10) includes at least one control unit for performing the method according to any one of the claims 1 to 9.
  12. The cooking oven (10) according to claims 10 or 11,
    characterized in that
    the top heating element (14) is arranged inside the oven cavity (12) and below a top wall (22) of said oven cavity (12).
  13. The cooking oven (10) according to any one of the claims 10 to 12,
    characterized in that
    the ring heating element (16) is arranged inside the oven cavity (12) and in front of a rear wall (24) of said oven cavity (12), while the fan (18) is arranged in or in front of said rear wall (24).
  14. The cooking oven (10) according to any one of the claims 10 to 13,
    characterized in that
    the cooking oven (10) includes at least one top heating element and/or at least one bottom heating element (20), wherein the top heating element is arranged above a top wall (22) of the oven cavity (12) and the bottom heating element (20) is arranged below a bottom wall (26) of the oven cavity (12).
  15. A computer program stored in a computer usable medium, comprising computer readable program means for causing a computer to perform a method according to any one of the claims 1 to 9.
EP15153228.0A 2015-01-30 2015-01-30 A method for performing a cooking process in a cooking oven Withdrawn EP3051209A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15153228.0A EP3051209A1 (en) 2015-01-30 2015-01-30 A method for performing a cooking process in a cooking oven
EP16153578.6A EP3051210B1 (en) 2015-01-30 2016-02-01 A method for performing a cooking process in a cooking oven and oven adapted for such method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15153228.0A EP3051209A1 (en) 2015-01-30 2015-01-30 A method for performing a cooking process in a cooking oven

Publications (1)

Publication Number Publication Date
EP3051209A1 true EP3051209A1 (en) 2016-08-03

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Application Number Title Priority Date Filing Date
EP15153228.0A Withdrawn EP3051209A1 (en) 2015-01-30 2015-01-30 A method for performing a cooking process in a cooking oven
EP16153578.6A Not-in-force EP3051210B1 (en) 2015-01-30 2016-02-01 A method for performing a cooking process in a cooking oven and oven adapted for such method

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16153578.6A Not-in-force EP3051210B1 (en) 2015-01-30 2016-02-01 A method for performing a cooking process in a cooking oven and oven adapted for such method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2671882A1 (en) * 2016-12-09 2018-06-11 Bsh Electrodomésticos España, S.A. COOKING APPARATUS DEVICE (Machine-translation by Google Translate, not legally binding)
US20190309955A1 (en) * 2018-04-05 2019-10-10 Rockwell Collins, Inc. Adaptive Cooking System

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447979A2 (en) * 1990-03-22 1991-09-25 Moulinex Baking method for an oven with microwave-, hot air and infrared heating
DE4319613C1 (en) * 1993-06-14 1994-06-30 Bauknecht Hausgeraete Operating fan-assisted domestic electric oven with automatic dual mode heating
EP0832544A1 (en) * 1995-06-15 1998-04-01 Aktiebolaget Electrolux An oven for the preparation of food
FR2777150A1 (en) * 1998-04-07 1999-10-08 Merloni Electromenager Energy saving operation of oven, useful for domestic and commercial installations
WO2008066267A1 (en) * 2006-11-29 2008-06-05 Lg Electronics Inc. Method of controlling oven
WO2008118639A2 (en) * 2007-03-27 2008-10-02 Electrolux Home Products Inc. Convection preheat system and method for radiant baking
EP2017536A1 (en) * 2007-07-20 2009-01-21 Electrolux Home Products Corporation N.V. An oven for a cooking appliance and a method for performing a cooking process
US20090250451A1 (en) * 2008-04-03 2009-10-08 Electrolux Home Products Inc. Auto stir

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447979A2 (en) * 1990-03-22 1991-09-25 Moulinex Baking method for an oven with microwave-, hot air and infrared heating
DE4319613C1 (en) * 1993-06-14 1994-06-30 Bauknecht Hausgeraete Operating fan-assisted domestic electric oven with automatic dual mode heating
EP0832544A1 (en) * 1995-06-15 1998-04-01 Aktiebolaget Electrolux An oven for the preparation of food
FR2777150A1 (en) * 1998-04-07 1999-10-08 Merloni Electromenager Energy saving operation of oven, useful for domestic and commercial installations
WO2008066267A1 (en) * 2006-11-29 2008-06-05 Lg Electronics Inc. Method of controlling oven
WO2008118639A2 (en) * 2007-03-27 2008-10-02 Electrolux Home Products Inc. Convection preheat system and method for radiant baking
EP2017536A1 (en) * 2007-07-20 2009-01-21 Electrolux Home Products Corporation N.V. An oven for a cooking appliance and a method for performing a cooking process
US20090250451A1 (en) * 2008-04-03 2009-10-08 Electrolux Home Products Inc. Auto stir

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2671882A1 (en) * 2016-12-09 2018-06-11 Bsh Electrodomésticos España, S.A. COOKING APPARATUS DEVICE (Machine-translation by Google Translate, not legally binding)
US20190309955A1 (en) * 2018-04-05 2019-10-10 Rockwell Collins, Inc. Adaptive Cooking System
US11333364B2 (en) * 2018-04-05 2022-05-17 Rockwell Collins, Inc. Adaptive cooking system

Also Published As

Publication number Publication date
EP3051210B1 (en) 2017-11-08
EP3051210A1 (en) 2016-08-03

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