WO2023213376A1 - Cooking device with two zones in the cooking cavity - Google Patents

Cooking device with two zones in the cooking cavity Download PDF

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Publication number
WO2023213376A1
WO2023213376A1 PCT/EP2022/061698 EP2022061698W WO2023213376A1 WO 2023213376 A1 WO2023213376 A1 WO 2023213376A1 EP 2022061698 W EP2022061698 W EP 2022061698W WO 2023213376 A1 WO2023213376 A1 WO 2023213376A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooking
cooking cavity
cavity
heating
airflow
Prior art date
Application number
PCT/EP2022/061698
Other languages
French (fr)
Inventor
Stephan Keller
Stéphane Poiré
Marc Schönenberger
Marcel Koller
Original Assignee
V-Zug Ag
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 V-Zug Ag filed Critical V-Zug Ag
Priority to PCT/EP2022/061698 priority Critical patent/WO2023213376A1/en
Publication of WO2023213376A1 publication Critical patent/WO2023213376A1/en

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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
    • F24C15/008—Illumination for oven cavities
    • 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
    • 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
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices

Definitions

  • Cooking device with two zones in the cooking cavi ty
  • the present invention relates to a cooking device , in particular a steam oven, comprising a cooking cavity and a heating cavity .
  • the air within a cooking cavity of a cooking device is heated by heating elements .
  • the cooking device comprises one or more fans , wherein each fan is enclosed by a ring heater to heat the air that is circulated by the fans .
  • the heating elements and the fans are arranged in a heating cavity, e . g . at the back side of the cooking cavity .
  • the cooking cavity and the heating cavity are separated by a separating wall arranged between the cooking cavity and the heating cavity . Ventilation openings are located at the separating wall .
  • Cooking devices are known with one cooking cavity divided into two cooking zones .
  • the two cooking zones are arranged on top of each other and separated by a baking tray or another hori zontal physical wall inside the cooking cavity .
  • the cooking cavity can be heated such that the air temperature in the first cooking zone is di f ferent to the air temperature in the second cooking zone .
  • Two di f ferent foods can be cooked in the two cooking zones .
  • the problem to be solved by the present invention is to provide an improved cooking device that creates di f ferent temperatures within the cooking cavity of the cooking device .
  • the invention relates to a cooking device , in particular a steam oven, comprising at least the following elements :
  • a cooking cavity This is the cavity used for cooking the foodstuf f .
  • a heating cavity This is a cavity separate from the cooking cavity . It contains fans and the heating unit as outlined below .
  • a separating wall arranged between the cooking cavity and the heating cavity .
  • This wall mechanically separates the cooking cavity and the heating cavity .
  • the separating wall extends substantially vertically .
  • Ventilation openings located at the separating wall .
  • the ventilation openings provide an air exchange between the cooking cavity and the heating cavity .
  • a first fan and a second fan are arranged, in particular side by side , in the heating cavity .
  • the two fans rotate in opposite direction .
  • a heating unit arranged in the heating cavity .
  • the first fan is positioned and adapted to collect air from the cooking cavity and to generate a first airflow interacting with the heating unit and being conveyed back into a first part of the cooking cavity and the second fan is positioned and adapted to collect air from the cooking cavity and to generate a second airflow interacting with the heating unit and being conveyed back into a second part of the cooking cavity .
  • the first airflow and the second airflow are two separate airflows . " Interacting" is understood as the airflow entering into a heat exchange with the given heating element .
  • the cooking device further comprises a control unit adapted to operate the first fan and the second fan independently from each other.
  • the control unit may increase the power of one fan while keeping the power of the other fan constant or decreasing, or vice versa.
  • first airflow and a second airflow with two different flow rates from the heating cavity back into the cooking cavity. For example, if the first airflow has a higher flow rate compared to the second airflow, the first airflow will occupy a higher volume in the cooking cavity compared to the second airflow. This increases the size of the first part of the cooking cavity and decreases the size of the second part of the cooking cavity. On the other hand, if both, the first airflow and the second airflow, have the same flow rate, the first part and the second part of the cooking cavity will have the same size.
  • the foodstuff arranged in the first part of the cooking cavity and foodstuff arranged in the second part of the cooking cavity are cooked with different temperatures. If the first airflow has a higher flow rate and a higher temperature compared to the second flow rate, more volume of the cooking cavity is tempered on the higher temperature than on the lower temperature because the first part of the cooking cavity with the higher temperature has a larger volume than the second part of the cooking cavity with the lower temperature .
  • the described cooking device comprises a cooking cavity divided into two different parts. Different food can be cooked on different temperatures in these two parts.
  • the size of the two parts can be varied such that smaller or lager foodstuff can be arranged side by side in the cooking cavity and be cooked on different temperatures. For example, if a larger foodstuff is cooked in the first part and a smaller foodstuff is cooked in the second part, the power of the first fan is set higher than the power of the second fan .
  • the volume of the first part is larger than the volume of the second part in the cooking cavity .
  • An advantageous embodiment of the present invention refers to a cooking device that is operated as a steam oven .
  • the device comprises a steam generator .
  • all parts and processes are advantageously designed to be used in a highly humid environment .
  • the fan, the first and second heating element , as well as any deflector, i f present may be of materials resistant against humidity, e . g . at least some of these parts may be formed ( at least at their surfaces ) from stainless steel .
  • the heating unit comprises a first heating element and a second heating element , both positioned and adapted such that the first airflow interacts with the first heating element and that the second airflow interacts with the second heating element .
  • the heating elements can be arranged around the fans and/or the first heating element and the second heating element can be part of one single heating element .
  • control unit is adapted to operate the first heating element and the second heating element independently from each other, i . e . the heating elements can be operated with di f ferent power . This allows to keep the first part and the second part of the cooking cavity on di f ferent temperatures . Both the volume and the temperatures of the first part and the second part can be varied independently .
  • the control unit may be adapted to maintain the temperature di f ference between the first airflow and the second airflow, as the airflows exits the heating cavity, at at least 20 ° C, in particular at at least 50 ° C, very particular at at least 100 ° C .
  • the cooking device comprises a separating element separating the heating cavity in two parts such that the first airflow interacts only with the first heating element and the second airflow interacts only with the second heating element in the heating cavity .
  • the separating element completely separates the first airflow and the second airflow in the heating cavity such that flow rate and temperature of the two airflows can be better controlled .
  • the power of the first fan and the second fan are controlled by controlling a DC motor or a dropping resistor .
  • the cooking device comprises two or more temperature sensors arranged in the cooking cavity .
  • a first of said temperature sensors is arranged in a left hal f of the cooking cavity and a second of said temperature sensors is arranged in the right hal f of the cooking cavity .
  • "Right" and " left” means from the perspective of a user looking through the cooking cavity opening or through the door of the cooking device into the cooking cavity .
  • the temperature sensors are arranged at the top wall of the cooking cavity .
  • the first and the second temperature sensors are spaced from each other not more than 400 mm, in particular not more than 200 mm . These sensors are arranged close to the center of the cooking cavity such that the temperature in the transition area between the first part and the second part can precisely be measured . It can be detected where the transition area is located, since the volume of the first part and the second part can be varied .
  • the cooking device can comprise
  • a separating bar can be arranged between the two grill elements such that the first grill element does not radiate at all or only a little into the first part and that the second grill element does not radiate at all or only a little into the second part of the cooking cavity .
  • the steam atmosphere can be controlled independently in the first part and in the second part of the cooking cavity .
  • the grill elements and/or the steam inlets and/or the bottom/ top heating elements can be operated independently from each other .
  • the cooking device comprises a first lighting device arranged in the first part of the cooking cavity and a second lighting device arranged in the second part of the cooking cavity . Both the first part and the second part can be illuminated independently .
  • the user sets parameters , e . g . temperature or volume , of the first part , the first lighting device is active and the second lighting device is inactive .
  • I f the user sets parameters of the second part , the second lighting device is active and the first lighting device is inactive .
  • a first part of the ventilation openings is arranged in the first part of the cooking cavity .
  • the first airflow flows only through the first part of the ventilation openings .
  • a second part of the ventilation openings is arranged in the second part of the cooking cavity .
  • the second airflow flows only through the second part of the ventilation openings .
  • the arrangement of ventilation openings in both parts of the cooking cavity allows to guide both airflows separate from each other in the first and second part of the cooking cavity .
  • the ventilation openings arranged in the first part of the cooking cavity are arranged only in the outer hal f of the first part of the cooking cavity and the ventilation openings arranged in the second part of the cooking cavity are arranged only in the outer hal f of the second part of the cooking cavity .
  • the arrangement of the ventilation openings in the cooking cavity allows a clear separation of the first airflow and of the second airflow in the cooking cavity .
  • the cooking device is configured such that the cooking temperature in the first part and in the second part can be set separately, i . e . individually, in particular by the user .
  • the user can define di f ferent temperatures for the first part and the second part and cooking di f ferent foodstuf f inside one single cooking cavity in di f ferent atmospheres .
  • the cooking device is configured such that power of the first fan and the power of the second fan can be set separately, i . e . individually, in particular by defining the si ze of the first part and the second part , and/or by the user .
  • the user can define that the first part has a volume of two- thirds of the whole cooking cavity volume and the second part has a volume of one-third of the whole cooking cavity volume , or vice versa .
  • the user can define that the first part and the second part have equal volume , i . e . the transition area between the first part and the second part is located in the center of the cooking cavity .
  • the first part and the second part of the cooking cavity are arranged hori zontally side by side .
  • the first part is located on the left side and the second part is located on the right side of the cooking cavity .
  • the cooking cavity consists only of the first part and the second part of the cooking cavity .
  • the first part and the second part of the cooking cavity are defined such that the border, i . e . the transition area, between the first part and the second part is a vertical plane dividing the cooking cavity in a left part and a right part , wherein the first part is the left part and the second part is the right par .
  • the cooking cavity does not comprise a separating physical wall separating the cooking cavity into two parts , in particular into the first part and the second part of the cooking cavity .
  • Fig . 1 shows a front view of an empty cooking device of the present invention without separating wall ;
  • Fig . 2a shows a front view of the cooking device with mounted separating wall , a baking tray and foodstuf f comprising bread and chicken;
  • Fig . 2b shows a top view of the embodiment shown in Fig . 2a ;
  • Fig . 3 shows a top view with foodstuf f comprising fish and carrots ;
  • Fig . 4 shows a top view with foodstuf f comprising bread and carrots .
  • Fig . 1 and Fig . 2a show a front view of the cooking device 100 .
  • Fig . 2b shows a top view of the cooking device 100 .
  • the terms “ left” , “ right” , “behind” , “ top” , “bottom” are understood from the perspective of a user with a front view as shown in Fig . 1 or Fig . 2a .
  • the front of the cooking device 100 is defined as the position where the door 101 of the cooking device is arranged .
  • the cooking device 100 comprises a cooking cavity 1 and a heating cavity 2 .
  • the heating cavity 2 is arranged behind the cooking cavity 1 .
  • a separating wall 3 separates the cooking cavity 1 and the heating cavity 2 .
  • the separating wall 3 comprises first ventilation openings 41 arranged in the centre of the separating wall 3 and second ventilation openings 42 arranged close to the side walls of the cooking cavity . Airflow leaves the heating cavity 2 through the second ventilation openings 42 into the cooking cavity 1 and returns through the first ventilation openings 41 into the heating cavity 2 .
  • Fig . 2b shows arrows 5 illustrating the airflow through the separating wall 3 .
  • a first fan 61 and a second fan 62 are arranged in the heating cavity 2 behind the separating wall 3 .
  • the first fan 61 is arranged on the left side and the second fan 62 is arranged on the right side of the cooking device 100 .
  • a heating unit 7 comprising a first heating element 71 and a second heating element 72 is arranged around the first fan 61 and around the second fan 62 .
  • the heating elements 71 and 72 are connected with a control unit 9 via connecting elements 8 .
  • the first fan 61 is positioned and adapted to collect air from the cooking cavity 1 and to generate a first airflow 51 interacting with the first heating element 71 in the heating cavity 2 .
  • the second fan 61 is positioned and adapted to collect air from the cooking cavity 1 and to generate a second airflow 52 interacting with the first heating element 72 in the heating cavity 2 .
  • the first airflow 51 flows from the cooking cavity 1 through the first ventilation openings 41 arranged in the centre of the separating wall 3 into the heating cavity 2 and is heated by the first heating element 71 . After being heated, the first airflow 51 returns into the cooking cavity 1 through the ventilation openings 42 arranged close to the left side wall of the cooking cavity 1 .
  • the second airflow 52 flows from the cooking cavity 1 through the first ventilation openings 41 arranged in the centre of the separating wall 3 into the heating cavity 2 and is heated by the second heating element 72 . After being heated, the second airflow 52 returns into the cooking cavity 1 through the ventilation openings 42 arranged close to the right side wall of the cooking cavity 1 .
  • the heating cavity 2 comprises a separating element 21 arranged in the middle of the heating cavity 2 .
  • the separating element 21 divides the heating cavity 2 in a first part 22 arranged on the left side of the cooking device 100 and in a second part 23 arranged on the right side of the cooking device 100 .
  • the separating element 21 avoids any interaction between the first airflow 51 and the second airflow 52 inside the heating cavity 2 .
  • the first airflow 51 is only heated by the first heating element 71 and the second airflow 52 is only heated by the second heating element 72 .
  • the cooking device 100 comprises a control unit 9 arranged above the cooking cavity 1 .
  • the control unit 1 is configured to control the first fan 61 and the second fan 62 independently from each other .
  • the control unit 9 is configured to control the first heating element 71 and the second heating element 72 independently from each other .
  • the first airflow 51 can be heated to a di f ferent temperature than the second airflow 52 and the first airflow 51 can be conveyed into the cooking cavity 1 with a di f ferent flow rate than the second airflow 52 .
  • the cooking cavity 1 is divided in a first part 11 and a second part 12 of the cooking cavity 1 .
  • the First part 11 is arranged on the left side and the second part 12 is arranged on the right side of the cooking cavity 2 , i . e . the first part 11 and the second part 12 are arranged side by side .
  • the first airflow 51 enters through the ventilation openings 42 arranged close to the left side wall into the first part 11 of the cooking cavity .
  • the second airflow 52 enters through the ventilation openings 42 close to the right side wall into the second part 12 of the cooking cavity 1 .
  • the boundary 13 separating the first part 11 and the second part 12 is shown by a dashed line in Fig . 2b .
  • the boundary 13 is not a physical wall but a virtual , vertical plane dividing the cooking cavity 1 in a left part and in a right part .
  • Fig . 2b shows a situation where a user cooks bread in the first part 11 and chicken in the second part 12 of the cooking cavity 1 .
  • Bread is optimally cooked with a temperature of 180 ° C and chicken is optimally cooked with a temperature of 220 ° C .
  • the control unit 9 operates the first heating element 71 with less power than the second heating element 72 .
  • the first airflow 51 enters the cooking cavity 1 with a lower temperature than the second airflow 52 .
  • the control unit operates the first fan 61 with more power than the second fan 62 .
  • the first airflow 51 enters the cooking cavity 1 with a higher flow rate than the second airflow 52 . Due to the higher flow rate , the first airflow occupies more volume inside the cooking cavity 1 than the second airflow 52 .
  • This is illustrated by the virtual boundary 13 not arranged exactly in the middle of the cooking cavity 1 but displaced from the middle to the right for a certain distance .
  • the first part 11 of the cooking cavity 1 representing the space for the first airflow 51 is bigger than the second part 12 representing the space for the second airflow 52 .
  • the di f ferent flow rates of the airflows 51 and 52 are illustrated by arrows 53 and 54 inside the cooking cavity 1 .
  • Fig . 3 shows a situation where a user cooks fish in the first part 11 and carrots in the second part 12 of the cooking cavity 1 .
  • Fish is optimally cooked with a temperature of 205 ° C and carrots are optimally cooked with a temperature of 160 ° C .
  • the control unit 9 operates the first heating element 71 with more power than the second heating element 72 and the control unit operates the first fan 61 with less power than the second fan 62 .
  • This configuration provides a first airflow 51 with a higher temperature and a lower flow rate compared to the second airflow 52 .
  • the first part 11 of the cooking cavity is smaller than the second part 12 .
  • Fig . 4 shows a situation where a user cooks bread in the first part 11 and carrots in the second part 12 of the cooking cavity 1 .
  • Bread is optimally cooked with a temperature of 180 ° C and carrots are optimally cooked with a temperature of 160 ° C .
  • the control unit 9 operates the first heating element 71 with a little bit more power than the second heating element 72 and the control unit operates both the first fan 61 and the second fan 62 on the same power level .
  • This configuration provides a first airflow 51 with a higher temperature compared to the second airflow 52 .
  • the flow rate is identical .
  • the first part 11 of the cooking cavity has the same si ze than the second part 12 .
  • the user can define different settings for the cooking process.
  • the user defines if he wants to cook with one unique atmosphere inside the cooking cavity 1 or with two different atmospheres as described above. If the user cooks with two different atmosphere, he defines for both the first part 11 and the second part 12 temperature and volume, i.e. the size of the first part 11 and the second part 12. For example, the user defines to cook with a temperature of 160°C in the first part 11 and to cook with a temperature of 200°C in the second part 12. Regarding the volume of the first part 11 and the second part 12, the user can define that the foodstuff arranged in the first part 11 occupies more space in the cooking cavity 1 than the food stuff arranged in the second part 12. The user defines a larger size for the first part 11 and a smaller size for the second part 12 inside the cooking cavity 1. In this case, the control unit 9 operates the first fan 61 with more power than the second fan 62.
  • the cooking cavity 1 comprises three temperature sensors 14, 15, 16 arranged at the top wall of the cooking cavity 1 close to the middle of the cooking cavity 1.
  • the first temperature sensor 14 is arranged in the left half of the cooking cavity 1
  • the second temperature sensor 15 is arranged in the right half of the cooking cavity 1
  • the third temperature sensor 16 is arranged in the middle of the cooking cavity 1. All of these three sensors 14, 15, 16 are arranged close to each other.
  • the first temperature sensor 14 is spaced 150 mm from the second temperature sensor 15.
  • the control unit 9 can vary the power of the fans 61, 62 and of the heating elements 71 and 72.
  • the control unit 9 must ensure that in average the air in the first part 11 and the air in the second part 12 are on the required temperature level.
  • the control unit must ensure that the boundary 13 is located where defined by the user .
  • the boundary 13 is located where the temperature sensors measure the highest temperature gradient .
  • the highest temperature gradient can be identi fied by interpolating the signals of the temperature sensors 14 , 15 , 15 , 16 .
  • individual lighting devices 20 are arranged at the top wall in the left hal f and in the right hal f of the cooking cavity 1 .
  • I f the user sets parameters for the first part 11 , the lightning device 20 arranged in the left hal f of the cooking cavity 1 is active and the lightning device 20 arranged in the right hal f of the cooking cavity 1 is inactive .
  • I f the user sets parameters for the second part 12 , the lightning device 20 arranged in the right hal f of the cooking cavity 1 is active and the lightning device 20 arranged in the left hal f of the cooking cavity 1 is inactive .
  • This configuration visualises to the user for which part the parameters are set .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking cavity 1 comprising two parts .
  • FIG. 1 illustrates the invention only with a cooking

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

A cooking device (100), in particular a steam oven, comprises a cooking cavity (1), a heating cavity (2), a separating wall (3) arranged between the cooking cavity (1) and the heating cavity (2) and ventilation openings (41, 42) located at the separating wall. A first fan (61), a second fan (62) and a heating unit are arranged, in particular side by side, in the heating cavity (2). The first fan (61) is positioned and adapted to collect air from the cooking cavity (1) and to generate a first airflow (51) interacting with the heating unit (61, 62) and being conveyed back into a first part (11) of the cooking cavity (1). The second fan (62) is positioned and adapted to collect air from the cooking cavity (1) and to generate a second airflow (52) interacting with the heating unit (61, 62) and being conveyed back into a second part (12) of the cooking cavity (1). The cooking device (100) further comprises a control unit (9) adapted to operate the first fan (61) and the second fan (62) independently from each other.

Description

Cooking device with two zones in the cooking cavi ty
Technical Field
The present invention relates to a cooking device , in particular a steam oven, comprising a cooking cavity and a heating cavity .
Background Art
The air within a cooking cavity of a cooking device , in particular a steam oven, is heated by heating elements . Typically, the cooking device comprises one or more fans , wherein each fan is enclosed by a ring heater to heat the air that is circulated by the fans . The heating elements and the fans are arranged in a heating cavity, e . g . at the back side of the cooking cavity . The cooking cavity and the heating cavity are separated by a separating wall arranged between the cooking cavity and the heating cavity . Ventilation openings are located at the separating wall .
Cooking devices are known with one cooking cavity divided into two cooking zones . The two cooking zones are arranged on top of each other and separated by a baking tray or another hori zontal physical wall inside the cooking cavity . The cooking cavity can be heated such that the air temperature in the first cooking zone is di f ferent to the air temperature in the second cooking zone . Two di f ferent foods can be cooked in the two cooking zones .
Disclosure of the Invention
The problem to be solved by the present invention is to provide an improved cooking device that creates di f ferent temperatures within the cooking cavity of the cooking device .
This problem is solved by the cooking device of the independent claim . Hence , the invention relates to a cooking device , in particular a steam oven, comprising at least the following elements :
- A cooking cavity : This is the cavity used for cooking the foodstuf f .
- A heating cavity : This is a cavity separate from the cooking cavity . It contains fans and the heating unit as outlined below .
- A separating wall arranged between the cooking cavity and the heating cavity . This wall mechanically separates the cooking cavity and the heating cavity . Advantageously, the separating wall extends substantially vertically .
- Ventilation openings located at the separating wall . The ventilation openings provide an air exchange between the cooking cavity and the heating cavity .
- A first fan and a second fan are arranged, in particular side by side , in the heating cavity . Advantageously, the two fans rotate in opposite direction .
- A heating unit arranged in the heating cavity .
The first fan is positioned and adapted to collect air from the cooking cavity and to generate a first airflow interacting with the heating unit and being conveyed back into a first part of the cooking cavity and the second fan is positioned and adapted to collect air from the cooking cavity and to generate a second airflow interacting with the heating unit and being conveyed back into a second part of the cooking cavity . The first airflow and the second airflow are two separate airflows . " Interacting" is understood as the airflow entering into a heat exchange with the given heating element .
The cooking device further comprises a control unit adapted to operate the first fan and the second fan independently from each other. For example, the control unit may increase the power of one fan while keeping the power of the other fan constant or decreasing, or vice versa.
This allows to feed a first airflow and a second airflow with two different flow rates from the heating cavity back into the cooking cavity. For example, if the first airflow has a higher flow rate compared to the second airflow, the first airflow will occupy a higher volume in the cooking cavity compared to the second airflow. This increases the size of the first part of the cooking cavity and decreases the size of the second part of the cooking cavity. On the other hand, if both, the first airflow and the second airflow, have the same flow rate, the first part and the second part of the cooking cavity will have the same size.
If the first airflow and the second airflow are heated on different temperatures, the foodstuff arranged in the first part of the cooking cavity and foodstuff arranged in the second part of the cooking cavity are cooked with different temperatures. If the first airflow has a higher flow rate and a higher temperature compared to the second flow rate, more volume of the cooking cavity is tempered on the higher temperature than on the lower temperature because the first part of the cooking cavity with the higher temperature has a larger volume than the second part of the cooking cavity with the lower temperature .
With other words, the described cooking device comprises a cooking cavity divided into two different parts. Different food can be cooked on different temperatures in these two parts. The size of the two parts can be varied such that smaller or lager foodstuff can be arranged side by side in the cooking cavity and be cooked on different temperatures. For example, if a larger foodstuff is cooked in the first part and a smaller foodstuff is cooked in the second part, the power of the first fan is set higher than the power of the second fan . The volume of the first part is larger than the volume of the second part in the cooking cavity .
An advantageous embodiment of the present invention refers to a cooking device that is operated as a steam oven . In that case , the device comprises a steam generator . In such an embodiment , all parts and processes are advantageously designed to be used in a highly humid environment . In particular, the fan, the first and second heating element , as well as any deflector, i f present , may be of materials resistant against humidity, e . g . at least some of these parts may be formed ( at least at their surfaces ) from stainless steel .
Advantageously, the heating unit comprises a first heating element and a second heating element , both positioned and adapted such that the first airflow interacts with the first heating element and that the second airflow interacts with the second heating element . In particular, the heating elements can be arranged around the fans and/or the first heating element and the second heating element can be part of one single heating element .
In particular, the control unit is adapted to operate the first heating element and the second heating element independently from each other, i . e . the heating elements can be operated with di f ferent power . This allows to keep the first part and the second part of the cooking cavity on di f ferent temperatures . Both the volume and the temperatures of the first part and the second part can be varied independently .
In at least one mode of operation of the device , the control unit may be adapted to maintain the temperature di f ference between the first airflow and the second airflow, as the airflows exits the heating cavity, at at least 20 ° C, in particular at at least 50 ° C, very particular at at least 100 ° C . This allows to maintain a substantial temperature gradient in the heating cavity . Advantageously, the cooking device comprises a separating element separating the heating cavity in two parts such that the first airflow interacts only with the first heating element and the second airflow interacts only with the second heating element in the heating cavity . The separating element completely separates the first airflow and the second airflow in the heating cavity such that flow rate and temperature of the two airflows can be better controlled .
In particular, the power of the first fan and the second fan are controlled by controlling a DC motor or a dropping resistor .
Advantageously, the cooking device comprises two or more temperature sensors arranged in the cooking cavity . In particular, a first of said temperature sensors is arranged in a left hal f of the cooking cavity and a second of said temperature sensors is arranged in the right hal f of the cooking cavity . "Right" and " left" means from the perspective of a user looking through the cooking cavity opening or through the door of the cooking device into the cooking cavity . In particular, the temperature sensors are arranged at the top wall of the cooking cavity .
Furthermore , the first and the second temperature sensors are spaced from each other not more than 400 mm, in particular not more than 200 mm . These sensors are arranged close to the center of the cooking cavity such that the temperature in the transition area between the first part and the second part can precisely be measured . It can be detected where the transition area is located, since the volume of the first part and the second part can be varied .
Furthermore , the cooking device can comprise
- A first grill element arranged in the first part of the cooking cavity and a second grill element arranged in the second part of the cooking cavity . A separating bar can be arranged between the two grill elements such that the first grill element does not radiate at all or only a little into the first part and that the second grill element does not radiate at all or only a little into the second part of the cooking cavity .
- A first steam inlet arranged in the first part of the cooking cavity and a second steam inlet arranged in the second part of the cooking cavity . The steam atmosphere can be controlled independently in the first part and in the second part of the cooking cavity .
- A first bottom and top heating element arranged in the first part of the cooking cavity and a second bottom and top heating element arranged in the second part of the cooking cavity .
The grill elements and/or the steam inlets and/or the bottom/ top heating elements can be operated independently from each other .
Advantageously, the cooking device comprises a first lighting device arranged in the first part of the cooking cavity and a second lighting device arranged in the second part of the cooking cavity . Both the first part and the second part can be illuminated independently .
In particular, i f the user sets parameters , e . g . temperature or volume , of the first part , the first lighting device is active and the second lighting device is inactive . I f the user sets parameters of the second part , the second lighting device is active and the first lighting device is inactive .
Advantageously, a first part of the ventilation openings is arranged in the first part of the cooking cavity . The first airflow flows only through the first part of the ventilation openings . A second part of the ventilation openings is arranged in the second part of the cooking cavity . The second airflow flows only through the second part of the ventilation openings . The arrangement of ventilation openings in both parts of the cooking cavity allows to guide both airflows separate from each other in the first and second part of the cooking cavity .
In particular the ventilation openings arranged in the first part of the cooking cavity are arranged only in the outer hal f of the first part of the cooking cavity and the ventilation openings arranged in the second part of the cooking cavity are arranged only in the outer hal f of the second part of the cooking cavity . The arrangement of the ventilation openings in the cooking cavity allows a clear separation of the first airflow and of the second airflow in the cooking cavity .
Advantageously, the cooking device is configured such that the cooking temperature in the first part and in the second part can be set separately, i . e . individually, in particular by the user . The user can define di f ferent temperatures for the first part and the second part and cooking di f ferent foodstuf f inside one single cooking cavity in di f ferent atmospheres .
In particular, the cooking device is configured such that power of the first fan and the power of the second fan can be set separately, i . e . individually, in particular by defining the si ze of the first part and the second part , and/or by the user . For example , the user can define that the first part has a volume of two- thirds of the whole cooking cavity volume and the second part has a volume of one-third of the whole cooking cavity volume , or vice versa . Alternatively, the user can define that the first part and the second part have equal volume , i . e . the transition area between the first part and the second part is located in the center of the cooking cavity .
In particular, the first part and the second part of the cooking cavity are arranged hori zontally side by side . For example , the first part is located on the left side and the second part is located on the right side of the cooking cavity . Advantageously, the cooking cavity consists only of the first part and the second part of the cooking cavity .
In a further preferred embodiment , the first part and the second part of the cooking cavity are defined such that the border, i . e . the transition area, between the first part and the second part is a vertical plane dividing the cooking cavity in a left part and a right part , wherein the first part is the left part and the second part is the right par .
In particular, the cooking cavity does not comprise a separating physical wall separating the cooking cavity into two parts , in particular into the first part and the second part of the cooking cavity .
Other advantageous embodiments are listed in the dependent claims as well as in the description below .
Brief Description of the Drawings
The invention will be better understood and obj ects other than those set forth above will become apparent from the following detailed description thereof . Such description makes reference to the annexed drawings , wherein :
Fig . 1 shows a front view of an empty cooking device of the present invention without separating wall ;
Fig . 2a shows a front view of the cooking device with mounted separating wall , a baking tray and foodstuf f comprising bread and chicken;
Fig . 2b shows a top view of the embodiment shown in Fig . 2a ;
Fig . 3 shows a top view with foodstuf f comprising fish and carrots ; and
Fig . 4 shows a top view with foodstuf f comprising bread and carrots .
Mode for Carrying Out the Invention Fig . 1 and Fig . 2a show a front view of the cooking device 100 . Fig . 2b shows a top view of the cooking device 100 . The terms " left" , " right" , "behind" , " top" , "bottom" are understood from the perspective of a user with a front view as shown in Fig . 1 or Fig . 2a . The front of the cooking device 100 is defined as the position where the door 101 of the cooking device is arranged .
The cooking device 100 comprises a cooking cavity 1 and a heating cavity 2 . The heating cavity 2 is arranged behind the cooking cavity 1 . A separating wall 3 separates the cooking cavity 1 and the heating cavity 2 . The separating wall 3 comprises first ventilation openings 41 arranged in the centre of the separating wall 3 and second ventilation openings 42 arranged close to the side walls of the cooking cavity . Airflow leaves the heating cavity 2 through the second ventilation openings 42 into the cooking cavity 1 and returns through the first ventilation openings 41 into the heating cavity 2 . Fig . 2b shows arrows 5 illustrating the airflow through the separating wall 3 .
A first fan 61 and a second fan 62 are arranged in the heating cavity 2 behind the separating wall 3 . The first fan 61 is arranged on the left side and the second fan 62 is arranged on the right side of the cooking device 100 . A heating unit 7 comprising a first heating element 71 and a second heating element 72 is arranged around the first fan 61 and around the second fan 62 . The heating elements 71 and 72 are connected with a control unit 9 via connecting elements 8 .
The first fan 61 is positioned and adapted to collect air from the cooking cavity 1 and to generate a first airflow 51 interacting with the first heating element 71 in the heating cavity 2 . The second fan 61 is positioned and adapted to collect air from the cooking cavity 1 and to generate a second airflow 52 interacting with the first heating element 72 in the heating cavity 2 .
With other words , the first airflow 51 flows from the cooking cavity 1 through the first ventilation openings 41 arranged in the centre of the separating wall 3 into the heating cavity 2 and is heated by the first heating element 71 . After being heated, the first airflow 51 returns into the cooking cavity 1 through the ventilation openings 42 arranged close to the left side wall of the cooking cavity 1 . The second airflow 52 flows from the cooking cavity 1 through the first ventilation openings 41 arranged in the centre of the separating wall 3 into the heating cavity 2 and is heated by the second heating element 72 . After being heated, the second airflow 52 returns into the cooking cavity 1 through the ventilation openings 42 arranged close to the right side wall of the cooking cavity 1 .
Furthermore , the heating cavity 2 comprises a separating element 21 arranged in the middle of the heating cavity 2 . The separating element 21 divides the heating cavity 2 in a first part 22 arranged on the left side of the cooking device 100 and in a second part 23 arranged on the right side of the cooking device 100 . The separating element 21 avoids any interaction between the first airflow 51 and the second airflow 52 inside the heating cavity 2 . The first airflow 51 is only heated by the first heating element 71 and the second airflow 52 is only heated by the second heating element 72 .
The cooking device 100 comprises a control unit 9 arranged above the cooking cavity 1 . The control unit 1 is configured to control the first fan 61 and the second fan 62 independently from each other . Furthermore , the control unit 9 is configured to control the first heating element 71 and the second heating element 72 independently from each other . With other words , the first airflow 51 can be heated to a di f ferent temperature than the second airflow 52 and the first airflow 51 can be conveyed into the cooking cavity 1 with a di f ferent flow rate than the second airflow 52 .
In order to define and understand the invention, the cooking cavity 1 is divided in a first part 11 and a second part 12 of the cooking cavity 1 . The First part 11 is arranged on the left side and the second part 12 is arranged on the right side of the cooking cavity 2 , i . e . the first part 11 and the second part 12 are arranged side by side . The first airflow 51 enters through the ventilation openings 42 arranged close to the left side wall into the first part 11 of the cooking cavity . The second airflow 52 enters through the ventilation openings 42 close to the right side wall into the second part 12 of the cooking cavity 1 . The boundary 13 separating the first part 11 and the second part 12 is shown by a dashed line in Fig . 2b . The boundary 13 is not a physical wall but a virtual , vertical plane dividing the cooking cavity 1 in a left part and in a right part .
Fig . 2b shows a situation where a user cooks bread in the first part 11 and chicken in the second part 12 of the cooking cavity 1 . Bread is optimally cooked with a temperature of 180 ° C and chicken is optimally cooked with a temperature of 220 ° C . In this situation, the control unit 9 operates the first heating element 71 with less power than the second heating element 72 . The first airflow 51 enters the cooking cavity 1 with a lower temperature than the second airflow 52 .
As shown in Fig . 2a, bread uses more space inside the cooking cavity 1 than chicken . In order to provide an optimal cooking atmosphere for both bread and chicken, the control unit operates the first fan 61 with more power than the second fan 62 . The first airflow 51 enters the cooking cavity 1 with a higher flow rate than the second airflow 52 . Due to the higher flow rate , the first airflow occupies more volume inside the cooking cavity 1 than the second airflow 52 . This is illustrated by the virtual boundary 13 not arranged exactly in the middle of the cooking cavity 1 but displaced from the middle to the right for a certain distance . With other words , the first part 11 of the cooking cavity 1 representing the space for the first airflow 51 is bigger than the second part 12 representing the space for the second airflow 52 . The di f ferent flow rates of the airflows 51 and 52 are illustrated by arrows 53 and 54 inside the cooking cavity 1 .
Fig . 3 shows a situation where a user cooks fish in the first part 11 and carrots in the second part 12 of the cooking cavity 1 . Fish is optimally cooked with a temperature of 205 ° C and carrots are optimally cooked with a temperature of 160 ° C . In this situation the control unit 9 operates the first heating element 71 with more power than the second heating element 72 and the control unit operates the first fan 61 with less power than the second fan 62 . This configuration provides a first airflow 51 with a higher temperature and a lower flow rate compared to the second airflow 52 . The first part 11 of the cooking cavity is smaller than the second part 12 .
Fig . 4 shows a situation where a user cooks bread in the first part 11 and carrots in the second part 12 of the cooking cavity 1 . Bread is optimally cooked with a temperature of 180 ° C and carrots are optimally cooked with a temperature of 160 ° C . In this situation the control unit 9 operates the first heating element 71 with a little bit more power than the second heating element 72 and the control unit operates both the first fan 61 and the second fan 62 on the same power level . This configuration provides a first airflow 51 with a higher temperature compared to the second airflow 52 . The flow rate is identical . The first part 11 of the cooking cavity has the same si ze than the second part 12 . The user can define different settings for the cooking process. First of all, the user defines if he wants to cook with one unique atmosphere inside the cooking cavity 1 or with two different atmospheres as described above. If the user cooks with two different atmosphere, he defines for both the first part 11 and the second part 12 temperature and volume, i.e. the size of the first part 11 and the second part 12. For example, the user defines to cook with a temperature of 160°C in the first part 11 and to cook with a temperature of 200°C in the second part 12. Regarding the volume of the first part 11 and the second part 12, the user can define that the foodstuff arranged in the first part 11 occupies more space in the cooking cavity 1 than the food stuff arranged in the second part 12. The user defines a larger size for the first part 11 and a smaller size for the second part 12 inside the cooking cavity 1. In this case, the control unit 9 operates the first fan 61 with more power than the second fan 62.
In order to better control the air temperature close to the boundary 13, the cooking cavity 1 comprises three temperature sensors 14, 15, 16 arranged at the top wall of the cooking cavity 1 close to the middle of the cooking cavity 1. The first temperature sensor 14 is arranged in the left half of the cooking cavity 1, the second temperature sensor 15 is arranged in the right half of the cooking cavity 1 and the third temperature sensor 16 is arranged in the middle of the cooking cavity 1. All of these three sensors 14, 15, 16 are arranged close to each other. The first temperature sensor 14 is spaced 150 mm from the second temperature sensor 15.
Depending on the measured temperatures, the control unit 9 can vary the power of the fans 61, 62 and of the heating elements 71 and 72. The control unit 9 must ensure that in average the air in the first part 11 and the air in the second part 12 are on the required temperature level. On the other hand, the control unit must ensure that the boundary 13 is located where defined by the user . The boundary 13 is located where the temperature sensors measure the highest temperature gradient . The highest temperature gradient can be identi fied by interpolating the signals of the temperature sensors 14 , 15 , 15 , 16 .
In order to further improve the individual atmospheric parameters in the first part 11 and the second part 12 of the cooking cavity 1 , individual grill elements 17 , steam inlets 18 and bottom/top heating elements 19 are provided for the first part 11 and the second part 12 of the cooking cavity 1 . Grill elements 19 , steam inlets 18 and bottom/top heating element 19 can be controlled individually by the control unit 9 .
Furthermore , individual lighting devices 20 are arranged at the top wall in the left hal f and in the right hal f of the cooking cavity 1 . I f the user sets parameters for the first part 11 , the lightning device 20 arranged in the left hal f of the cooking cavity 1 is active and the lightning device 20 arranged in the right hal f of the cooking cavity 1 is inactive . I f the user sets parameters for the second part 12 , the lightning device 20 arranged in the right hal f of the cooking cavity 1 is active and the lightning device 20 arranged in the left hal f of the cooking cavity 1 is inactive . This configuration visualises to the user for which part the parameters are set .
It should be noted, that drawings illustrate the invention only with a cooking cavity 1 comprising two parts . However, it is possible to divide the cooking cavity 1 into three or more parts . In this case , three or more heating elements and fans arranged in the heating cavity 2 are provided .

Claims

Claims
1. A cooking device (100) , in particular a steam oven, comprising:
- a cooking cavity (1) ,
- a heating cavity (2) ,
- a separating wall (3) arranged between the cooking cavity (1) and the heating cavity (2) ,
- ventilation openings (41, 42) located at the separating wall,
- a first fan (61) and a second fan (62) arranged, in particular side by side, in the heating cavity (2) ,
- a heating unit (71, 72) arranged in the heating cavity (2) , wherein
- the first fan (61) is positioned and adapted to collect air from the cooking cavity (1) and to generate a first airflow (51) interacting with the heating unit (61, 62) and being conveyed back into a first part (11) of the cooking cavity (1) and
- the second fan (62) is positioned and adapted to collect air from the cooking cavity (1) and to generate a second airflow (52) interacting with the heating unit (61, 62) and being conveyed back into a second part (12) of the cooking cavity (1) , wherein the cooking device (100) further comprises a control unit (9) adapted to operate the first fan (61) and the second fan (62) independently from each other .
2. The cooking device (100) of claim 1, wherein the heating unit (61, 62) comprises a first heating element (61) and a second heating element (62) , both positioned and adapted such that the first airflow (51) interacts with the first heating element (61) and that the second airflow (52) interacts with the second heating element ( 62 ) .
3. The cooking device (100) of claim 2, wherein the control unit (9) is adapted to operate the first heating element (61) and the second heating element (62) independently from each other.
4. The cooking device (100) of any of the claims 2 or 3, comprising a separating element (21) separating the heating cavity (2) in two parts such that the first airflow (51) interacts only with the first heating element (71) and the second airflow (52) interacts only with the second heating element (72) .
5. The cooking device (100) of any of the preceding claims, wherein the power of the first fan (61) and the second fan (62) are controlled by controlling a DC motor or a dropping resistor.
6. The cooking device (100) according to one of the preceding claims comprising two or more temperature sensors (14, 15, 16) arranged in the cooking cavity (1) , in particular wherein a first (14) of said temperature sensors is arranged in a left half of the cooking cavity (1) and a second (15) of said temperature sensors is arranged in right half of the cooking cavity (1) , in particular wherein the temperature sensors (14, 15, 16) are arranged at the top wall of the cooking cavity ( 1 ) .
7. The cooking device (100) according to claim 6 wherein the first and the second temperature sensors (14, 15) are spaced from each other not more than 400 mm, in particular not more than 200 mm.
8. The cooking device (100) according to one of the preceding claims, comprising
- a first grill element (17) arranged in the first part (11) of the cooking cavity (1) and a second grill element (17) arranged in the second part (12) of the cooking cavity (1) , and/or
- a first steam inlet (18) arranged in the first part (11) of the cooking cavity (1) and a second steam inlet (18) arranged in the second part (12) of the cooking cavity (1) , and/or
- a first bottom and top heating element (19) arranged in the first part (11) of the cooking cavity (1) and a second bottom and top heating element (19) arranged in the second part (12) of the cooking cavity (1) , wherein the grill elements (17) and/or the steam inlets (18) and/or the bottom/top heating elements (19) can be operated independently from each other.
9. The cooking device (100) according to one of the preceding claims comprising a first lighting device (20) arranged in the first part (11) of the cooking cavity (1) and a second lighting device (20) arranged in the second part (12) of the cooking cavity (1) .
10. The cooking device (100) of claim 9, wherein the control unit (9) is adapted such that
- the first lighting device (20) is active and the second lighting device (20) is inactive while the user sets parameters of the first part (11) of the cooking cavity ( 1 ) ,
- the second lighting device (20) is active and the first lighting device (20) is inactive while the user sets parameters of the second part (12) of the cooking cavity ( 1 ) .
11. The cooking device (100) according to one of the preceding claims, wherein
- a first part (11) of the ventilation openings (42) is arranged in the first part of the cooking cavity adapted such that only the first airflow (51) flows through the first part of the ventilation openings (42) ,
- a second part of the ventilation openings (42) is arranged in the second part (12) of the cooking cavity (1) adapted such that only the second airflow (51) flows through the second part of the ventilation openings (42) .
12. The cooking device (100) according to claim 11, wherein
- the ventilation openings (42) arranged in the first part (11) of the cooking cavity (1) are arranged only in the outer half of the first part (11) of the cooking cavity (1) , and
- the ventilation openings (42) arranged in the second part (12) of the cooking cavity (1) are arranged only in the outer half of the second part (12) of the cooking cavity (1) .
13. The cooking device (100) according to one of the preceding claims, configured such that the cooking temperature in the first part (11) and in the second part (12) can be set separately, in particular by the user.
14. The cooking device (100) according to one of the preceding claims, configured such that power of the first fan (61) and the second fan (62) can be set separately, in particular
- by defining the size of the first part (11) and the second part (12) , and/or
- by the user.
15. The cooking device (100) according to one of the preceding claims, wherein the first part (11) and the second part (12) of the cooking cavity (100) are arranged horizontally side by side.
16. The cooking device (100) according to one of the preceding claims, wherein the cooking cavity (1) consists of the first part (11) and the second part (12) of the cooking cavity (1) .
17. The cooking device (100) according to one of the preceding claims, wherein the first part (11) and the second part (12) of the cooking cavity (1) are defined such that the border (13) between the first part (11) and the second part (12) is a vertical plane dividing the cooking cavity (1) in a left part and a right part, wherein the first part (11) is the left part and the second part (12) is the right part.
18. The cooking device (100) according to one of the preceding claims, wherein the cooking cavity (1) does not comprise a separating physical wall separating the cooking cavity (1) into two parts, in particular into the first part (11) and the second part (12) of the cooking cavity ( 1 ) .
PCT/EP2022/061698 2022-05-02 2022-05-02 Cooking device with two zones in the cooking cavity WO2023213376A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/061698 WO2023213376A1 (en) 2022-05-02 2022-05-02 Cooking device with two zones in the cooking cavity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/061698 WO2023213376A1 (en) 2022-05-02 2022-05-02 Cooking device with two zones in the cooking cavity

Publications (1)

Publication Number Publication Date
WO2023213376A1 true WO2023213376A1 (en) 2023-11-09

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Application Number Title Priority Date Filing Date
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163517U (en) * 1981-04-09 1982-10-15
EP2232151B1 (en) * 2007-12-16 2019-07-03 LG Electronics Inc. Convection apparatus
US20210222890A1 (en) * 2018-03-29 2021-07-22 Aha, Llc Process and apparatus for cooking utilizing nebulized water particles and air
US20210372630A1 (en) * 2020-02-28 2021-12-02 Team International Group of America Inc. Dual cooking appliance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163517U (en) * 1981-04-09 1982-10-15
EP2232151B1 (en) * 2007-12-16 2019-07-03 LG Electronics Inc. Convection apparatus
US20210222890A1 (en) * 2018-03-29 2021-07-22 Aha, Llc Process and apparatus for cooking utilizing nebulized water particles and air
US20210372630A1 (en) * 2020-02-28 2021-12-02 Team International Group of America Inc. Dual cooking appliance

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