EP1746351A2 - Backofen mit belüftetem Raum - Google Patents

Backofen mit belüftetem Raum Download PDF

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Publication number
EP1746351A2
EP1746351A2 EP06291162A EP06291162A EP1746351A2 EP 1746351 A2 EP1746351 A2 EP 1746351A2 EP 06291162 A EP06291162 A EP 06291162A EP 06291162 A EP06291162 A EP 06291162A EP 1746351 A2 EP1746351 A2 EP 1746351A2
Authority
EP
European Patent Office
Prior art keywords
cavity
air
oven
closed position
air inlet
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.)
Granted
Application number
EP06291162A
Other languages
English (en)
French (fr)
Other versions
EP1746351A3 (de
EP1746351B1 (de
Inventor
Vincent Gatto
Frédéric Branger
Serge Pruneau
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.)
FagorBrandt SAS
Original Assignee
FagorBrandt SAS
Brandt Industries SAS
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 FagorBrandt SAS, Brandt Industries SAS filed Critical FagorBrandt SAS
Priority to PL06291162T priority Critical patent/PL1746351T3/pl
Publication of EP1746351A2 publication Critical patent/EP1746351A2/de
Publication of EP1746351A3 publication Critical patent/EP1746351A3/de
Application granted granted Critical
Publication of EP1746351B1 publication Critical patent/EP1746351B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00Stoves or ranges heated by electric energy
    • F24C7/02Stoves or ranges heated by electric energy using microwaves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2007Removing cooking fumes from oven cavities
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/642Cooling of the microwave components and related air circulation systems
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/647Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
    • H05B6/6485Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating further combined with convection heating

Definitions

  • the present invention relates to an oven, and more particularly to a ventilated cavity oven.
  • the present invention relates to an oven adapted to operate firstly in the microwave cooking mode, and secondly in the combined cooking mode (microwave source combined with a radiant heat source) or in traditional cooking mode (radiant heat source).
  • a ventilation system is associated with the cavity, the cavity comprising air inlet means and air outlet means adapted to place the cavity in communication with an air circulation space.
  • the oven when the oven is also adapted to implement combined or traditional cooking modes (for example microwave combined with a radiant heat source with rotating heat), the ventilation of the cavity penalizes the cooking performance of the oven . Indeed, the continuous supply of fresh air into the cavity delays and reduces the rise in temperature in the cavity.
  • combined or traditional cooking modes for example microwave combined with a radiant heat source with rotating heat
  • a baffle adapted in a position to deflect a flow of air upstream of the air inlet means in the cavity.
  • the fresh air comes to cool the food but also the radiant heating elements which then see their temperature and especially their infrared radiation decrease.
  • this fresh air which stores some of the calories from the radiant heating elements does not return them necessarily to the food.
  • the present invention aims to solve the aforementioned drawbacks.
  • an oven comprising a cavity adapted to receive food to be heated and a ventilation system of the cavity, the cavity comprising air inlet means and air outlet means adapted to be used. communicating the cavity with an air flow space, and the furnace further comprising deflector means adapted in a closed position to deflect an air flow upstream of the input means.
  • the furnace further comprises second deflector means adapted in a closed position to isolate air outlet means from the air circulation space.
  • the inlets and outlets of the cavity are isolated from the air circulation space of the oven, so that the cavity is completely insulated from the rest of the oven.
  • the homogeneity of the temperature in the cavity is improved.
  • the heating of the external components can be reduced by reducing or eliminating leakage of hot air from the cavity operating in combined or traditional cooking mode.
  • the performance of the oven is thus increased.
  • the fats released during cooking can be confined in the cavity.
  • the first deflector means and the second deflector means are in the closed position simultaneously, so as to isolate the cavity at both the air inlets and the air outlets.
  • the first and second deflector means are constituted respectively of a first flap and a second flap movable between a closed position and an open position.
  • the air circulation space comprises a duct adapted to house a magnetron and the first deflector means are adapted to close said duct upstream of said air inlet means in the cavity and downstream of said magnetron.
  • the ventilation of the magnetron can be ensured permanently, especially during operation in combined mode, by closing the duct housing the magnetron downstream thereof relative to the direction of flow of the cooling air flow. .
  • FIGS. 1 and 2 A furnace according to one embodiment of the present invention will be described first with reference to FIGS. 1 and 2.
  • This oven comprises a cavity 10 adapted to receive food to be heated and / or cooked.
  • This cavity is closed on a front face by a door 10 'for viewing, through a glass surface, the interior of the cavity 10 during heating or cooking food.
  • a ventilation system of the cavity 10 and the entire oven is provided.
  • the latter comprises air intake means 13 and air outlet means 14.
  • the means for air inlet and the air outlet means consist of openings disposed in the same wall of the cavity, and here in the upper wall 10a of the cavity.
  • the air inlet means 13 and the air outlet means 14 extend respectively in two directions. parallel to each other, and here parallel to the width of the oven.
  • the air inlet means 13 and the air outlet means 14 consist of a series of perforations aligned in a direction that extends in the width of the furnace.
  • the air inlet means 13 are as shown in Figures 1 and 2 adjacent to the front door 10 '.
  • the air entering the cavity is adapted to circulate on the inner face of the door 10 ', and thus avoids any deposition of condensation on the glass surface of the door 10'.
  • the air flow is sufficiently powerful to prevent air from looping directly between the air inlet means 13 and the air outlet means 14 disposed in the upper wall 10a of the air. cavity 10.
  • the ventilation system is adapted to create a flow of air having a speed at the air inlet means 13 between 0.5 and 4 m / s. This speed is preferably equal to 1 m / s.
  • the ventilation system for ventilating the entire oven includes in particular a dual fan 15 adapted to supply two ventilation circuits.
  • a first air ventilation circuit is adapted to cool electronic components located in the upper part of the oven, and to ventilate the cavity 10 as described above.
  • an intermediate plate 16 is disposed between the upper wall 10a of the cavity and the outer wall 17 of the furnace body.
  • an air guide 18 extends between the fan 15 and the air inlet 13 in the cavity.
  • magnetron 19 microwave generator, to ensure its cooling.
  • the air supplying the fan 15 is sucked up to a front opening located between the oven door 10 'and a control panel 20.
  • This air sucked at the front air intake 20 circulates all the time. first between the intermediate plate 16 and the upper wall 17 of the furnace to be sucked into the fan and reinjected at the air guide 18 so as to cool the magnetron 19.
  • this air is introduced with sufficient speed at the air inlet means 13 in the cavity.
  • the air is then evacuated from the cavity at the level of the air outlet means 14 and circulates between the upper wall 10a of the cavity and the intermediate plate 16.
  • This air is then evacuated at the level of the space between the side walls of the cavity and the body of the oven to exit at the bottom of the oven, as illustrated by the white and black arrows under the cavity.
  • a second air circulation circuit is implemented from the fan 15 in the rear part of the oven as illustrated by the white arrows.
  • the air discharged between the rear wall 10b of the cavity and the rear wall 21 of the oven makes it possible to cool the components of the microwave oven (transformer, high-voltage capacitor) as well as the elements linked for example to operation of the oven with heat. rotating.
  • the air is evacuated at the side walls of the oven and at the bottom as illustrated at the white and black arrows.
  • the oven as illustrated in Figure 1 is adapted to implement a microwave cooking cycle, releasing a large amount of steam, and thus requiring the ventilation of the cavity to prevent the condensation of this vapor on the walls cold of the cavity 10.
  • the oven when, as illustrated in FIG. 2, the oven is adapted to operate in a combined mode or in a traditional mode that does not require the use of the microwave generator, it is preferable to suppress the ventilation of the oven. cavity, which is no longer necessary, and which at contrary represents a disadvantage for the homogeneous temperature rise in this cavity.
  • the furnace comprises deflector means 30.
  • the deflector means are illustrated in Figure 5 independently of the furnace.
  • deflector means 30 comprise a first flap 31, thus constituting first deflector means 31, and a second flap 32 constituting second deflector means 32.
  • flaps 31, 32 are secured to a pivot axis 33 so that they can pivot simultaneously about this axis 33 between an open position and a closed position which will be described later with reference to Figures 1 to 4.
  • the flaps 31 and 32 are disposed in the same plane and on the same side of the pivot axis 33. Given their implementation in an oven as described above, the first flap 31 is intended to deflect the air in the air guide 18, and the second flap 32 is for diverting air into the intermediate space between the upper wall 10a of the cavity and the intermediate wall 16 of the furnace.
  • the pivot axis 33 is adapted to extend in the width of the cavity 10, the length of this pivot axis 33 substantially corresponding to the width of the cavity 10.
  • the flaps 31, 32 disposed along this axis also have a cumulative length substantially equal to the width of the cavity.
  • the width of the first flap 31, corresponding to the distance between the axis 33 and the free end 31a of the first flap 31 is greater, and for example three times larger, than the width of the second flap 32 corresponding to the distance between the axis 33 and the free end 32a of the second flap 32.
  • An actuating tab 34 is disposed substantially at the center of the axis 33 and is adapted to cooperate with a wax cylinder 35 (see FIG. 1 and 2) enabling the flaps 31, 32 to be pivotally displaced about the axis 33 .
  • pivoting flaps 31, 32 here consisting of a wax cylinder, could be different.
  • the means for actuating the flaps 31, 32 is controlled by the control electronics of the oven, so as to control the movement of the flaps to their closed position when a combined or traditional cooking mode is selected by the user or to their open position when a microwave cooking mode is selected by the user.
  • the flaps 31, 32 are adapted to rest on the upper wall 10a of the cavity 10.
  • the flaps 31, 32 are adapted to deflect the air flow.
  • the first flap 31 is adapted in the closed position to deflect the flow of air upstream of the air inlet means 13.
  • this first flap 31 is adapted to close the air guide 18 upstream of the air inlet means 13 and downstream of the magnetron 19 disposed in the air guide 18.
  • the air driven by the fan 15 in the air guide 18 passes through the magnetron 19, then is discharged by the flap 31 in the closed position. Thanks to an opening disposed under the magnetron 19, the air can be discharged while ensuring the cooling of this magnetron.
  • the second flap is disposed in the intermediate space of air circulation, between the upper wall 10a of the cavity and the intermediate plate 16, so as to isolate the air outlet means 14 from this circulation space. 'air.
  • the hot air of the cavity is not sucked by the flow of air flowing around the cavity for cooling all the operating elements of the furnace.
  • the first and second flaps 31, 32 thus make it possible, in the closed position, to isolate the cavity 10 aeraulically and to avoid any aspiration of fresh air into the interior of the cavity at the level of the air inlet means 13 and any hot air leakage outside the cavity at the air outlet means 14.
  • the performance of the oven in combined or traditional cooking mode can thus be increased, the homogeneity of the temperature in the cavity being also improved.
  • the arrangement of the flaps and their respective sizes may be different since the air circulation spaces between the cavity and the oven are of different shape and size.
  • the flaps 31, 32 could also be integral with the same axis of operation, but arranged in two different locations of the oven, especially if the air inlet means and the air outlet means do not are not arranged near each other in a wall of the cavity.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Electric Ovens (AREA)
  • Cookers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Glass Compositions (AREA)
  • Electronic Switches (AREA)
  • Forging (AREA)
EP06291162A 2005-07-18 2006-07-18 Backofen mit belüftetem Raum Active EP1746351B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06291162T PL1746351T3 (pl) 2005-07-18 2006-07-18 Piec z wnęką wentylowaną

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0507609A FR2888632B1 (fr) 2005-07-18 2005-07-18 Four a cavite ventilee

Publications (3)

Publication Number Publication Date
EP1746351A2 true EP1746351A2 (de) 2007-01-24
EP1746351A3 EP1746351A3 (de) 2009-07-15
EP1746351B1 EP1746351B1 (de) 2011-05-11

Family

ID=36297198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291162A Active EP1746351B1 (de) 2005-07-18 2006-07-18 Backofen mit belüftetem Raum

Country Status (5)

Country Link
EP (1) EP1746351B1 (de)
AT (1) ATE509239T1 (de)
ES (1) ES2363028T3 (de)
FR (1) FR2888632B1 (de)
PL (1) PL1746351T3 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016199395A1 (ja) * 2015-06-09 2016-12-15 パナソニックIpマネジメント株式会社 加熱調理器
CN106439981A (zh) * 2016-12-09 2017-02-22 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为手动式卡扣结构的l型吸油烟机
CN106482192A (zh) * 2016-12-09 2017-03-08 成都前锋电子有限责任公司 一种同时具备上、下进风口的l型吸油烟机
CN106482191A (zh) * 2016-12-09 2017-03-08 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为电动式升降结构的可更换型l型吸油烟机
CN106524260A (zh) * 2016-12-09 2017-03-22 成都前锋电子有限责任公司 一种内嵌油槽的l型吸油烟机
CN106524258A (zh) * 2016-12-09 2017-03-22 成都前锋电子有限责任公司 一种底部进风口可开合且能够防止液体外泄的l型吸油烟机
CN106642252A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种内部导油板一体成型的l型吸油烟机
CN106642254A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种底部进风口可手动式开合的l型吸油烟机
CN106642253A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为电动式升降结构的l型吸油烟机
CN106705159A (zh) * 2016-12-09 2017-05-24 成都前锋电子有限责任公司 一种底部进风口可开合的l型吸油烟机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515478A (en) 1938-05-28 1939-12-06 James Lowebate Smith Improvements in ovens or stoves
DE29504477U1 (de) 1995-03-16 1995-06-14 Wiesheu Wiwa Gmbh Ofen zur Wärmebehandlung von Lebensmitteln und Katalysator hierfür

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332992A (en) * 1979-12-19 1982-06-01 Amana Refrigeration, Inc. Air flow system for combination microwave and convection oven
US4369347A (en) * 1980-04-09 1983-01-18 Sharp Kabushiki Kaisha Damper activation in a combined microwave and electric heating oven
JPS57131939A (en) * 1981-02-06 1982-08-16 Matsushita Electric Ind Co Ltd Heat cooking apparatus
DE3519423A1 (de) * 1985-05-30 1986-12-04 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Gargeraet mit verschliessbarem garraum
DE3931482A1 (de) * 1989-09-21 1991-04-04 Licentia Gmbh Back- u. bratofen
EP0463726B1 (de) * 1990-05-25 1996-01-03 Kabushiki Kaisha Toshiba Kochgerät
GB2258126B (en) * 1991-07-20 1995-03-22 Creda Ltd Oven with combined microwave and other heating sources

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515478A (en) 1938-05-28 1939-12-06 James Lowebate Smith Improvements in ovens or stoves
DE29504477U1 (de) 1995-03-16 1995-06-14 Wiesheu Wiwa Gmbh Ofen zur Wärmebehandlung von Lebensmitteln und Katalysator hierfür

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016199395A1 (ja) * 2015-06-09 2016-12-15 パナソニックIpマネジメント株式会社 加熱調理器
CN106439981A (zh) * 2016-12-09 2017-02-22 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为手动式卡扣结构的l型吸油烟机
CN106482192A (zh) * 2016-12-09 2017-03-08 成都前锋电子有限责任公司 一种同时具备上、下进风口的l型吸油烟机
CN106482191A (zh) * 2016-12-09 2017-03-08 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为电动式升降结构的可更换型l型吸油烟机
CN106524260A (zh) * 2016-12-09 2017-03-22 成都前锋电子有限责任公司 一种内嵌油槽的l型吸油烟机
CN106524258A (zh) * 2016-12-09 2017-03-22 成都前锋电子有限责任公司 一种底部进风口可开合且能够防止液体外泄的l型吸油烟机
CN106642252A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种内部导油板一体成型的l型吸油烟机
CN106642254A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种底部进风口可手动式开合的l型吸油烟机
CN106642253A (zh) * 2016-12-09 2017-05-10 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为电动式升降结构的l型吸油烟机
CN106705159A (zh) * 2016-12-09 2017-05-24 成都前锋电子有限责任公司 一种底部进风口可开合的l型吸油烟机
CN106482191B (zh) * 2016-12-09 2019-05-24 成都前锋电子有限责任公司 一种底部进风口可开合且开合结构为电动式升降结构的可更换型l型吸油烟机

Also Published As

Publication number Publication date
EP1746351A3 (de) 2009-07-15
FR2888632B1 (fr) 2007-10-12
PL1746351T3 (pl) 2011-10-31
ES2363028T3 (es) 2011-07-19
FR2888632A1 (fr) 2007-01-19
EP1746351B1 (de) 2011-05-11
ATE509239T1 (de) 2011-05-15

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