EP1994827A1 - Four de cuisson - Google Patents

Four de cuisson Download PDF

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Publication number
EP1994827A1
EP1994827A1 EP20080425193 EP08425193A EP1994827A1 EP 1994827 A1 EP1994827 A1 EP 1994827A1 EP 20080425193 EP20080425193 EP 20080425193 EP 08425193 A EP08425193 A EP 08425193A EP 1994827 A1 EP1994827 A1 EP 1994827A1
Authority
EP
European Patent Office
Prior art keywords
oven
burner
support
inner compartment
baking
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.)
Ceased
Application number
EP20080425193
Other languages
German (de)
English (en)
Inventor
Tiziano Lacche'
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.)
Whirlpool EMEA SpA
Original Assignee
Indesit Co SpA
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
Priority claimed from ITRN20070028 external-priority patent/ITRN20070028A1/it
Priority claimed from ITRN20070054 external-priority patent/ITRN20070054A1/it
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP1994827A1 publication Critical patent/EP1994827A1/fr
Ceased legal-status Critical Current

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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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F24C3/087—Arrangement or mounting of burners on ranges in baking ovens
    • 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
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • F24C3/128—Arrangement or mounting of control or safety devices on ranges in baking ovens
    • 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

Definitions

  • the present invention relates to an oven for baking foods: said baking oven is preferably employed in a home environment.
  • Known baking ovens comprise an inner compartment for receiving the foods to be baked, said inner compartment being defined by:
  • the baking oven comprises a first gas burner operating mainly by convection. Said first burner is located at the lower base of the inner compartment, nearly abutting the bottom surface of the inner compartment. Said type of baking ovens is widely used above all in Great Britain.
  • a gas-fired grill operating mainly by irradiation, which can be used to provide certain foods with superficial crispness.
  • Said grill burner is positioned at the ceiling of the inner compartment.
  • the activation of the burner operating mainly by convection or of the grill burner operating mainly by irradiation is achieved by acting manually on a dedicated selector that enables the alternated and not simultaneous operation of the two burners.
  • the ovens described above have some drawbacks and/or limitations.
  • undesired temperature inconsistencies may be created within the baking compartment, which determine inconsistent baking. This is particularly evident if a lower shelf and an upper shelf are simultaneously present, and foods on each of the two shelves are baked at the same time.
  • the upper and lower shelf do not completely overly the gas burner operating mainly by convection, but they leave free a rear gap that promotes heat distribution. In this way, however, since heat tends to rise upwards, the food located on the upper shelf will receive greater heat flow, which speeds up its baking.
  • An object of the present invention is to overcome the aforesaid drawbacks, making available a baking oven that enables to obtain a homogenous and uniform baking.
  • the reference number 1 designates an oven for baking foods according to the present invention.
  • Said oven for baking foods is preferably used for household applications and it comprises an inner compartment 2 for housing the foods to be baked.
  • said inner compartment 2 is commonly called "muffle”.
  • the inner compartment 2 is at least in part defined by a lower base 22 and by a ceiling 21.
  • the lower base 22 and the ceiling 21 are mutually opposite.
  • the lower base 22 and the ceiling 21 develop between said door 23 and said bottom surface 24.
  • the lower base 22 and the ceiling 21 develop substantially in a respective horizontal plane.
  • the inner compartment 2 is at least partly defined by two opposite lateral surfaces 25, 26, preferably with substantially vertical development, which develop between said base 22 and said ceiling 21.
  • the first and the second burner 41, 42 can operate simultaneously.
  • the first and the second burner 41, 42 can be activated independently from each other.
  • the first and the second burner 41, 42 comprise one or more slits wherefrom baking flames develop.
  • the oven 1 comprises at least a first support 31 which can be positioned in the inner compartment 2.
  • the first support 31 is suitable to support directly a food to be baked or is suitable to support directly a container in which the food to be baked is placed.
  • the first support 31 comprises, or coincides with, a first shelf 310 or a roasting jack 311.
  • the first shelf 310 may advantageously be a pan defining a continuous support plane without holes; alternatively, the first shelf 310 can be a grille; if the first shelf 310 is a pan, it can also support the foods directly; if the first shelf 310 is a grille, it supports a container which in turn contains the foods.
  • the oven 1 further comprises a second support 32 that can be positioned in the inner compartment 2 and that is suitable to support directly a food to be cooked or that is suitable to support directly a container in which the food to be cooked is placed; said second support 32 comprises, or coincides with, a second shelf 320.
  • the second support 32 overlies the first support 31.
  • the first and the second support 31, 32 and in particular the first and the second shelf 310, 320 can be inserted into and extracted from the inner compartment 2.
  • the oven comprises means 30 for positioning the first support 31 in at least one operative position in which said reference plane is positioned above the first and the second burner 41, 42 and in which said first support 31 is internal to the inner compartment 2.
  • the reference plane orthogonal to said ideal reference straight line passes through the point of said first support 31 that is closest to the lower base 22.
  • the positioning means 30 enable the first support 31 to assume a plurality of distinct operative positions in the inner compartment 2; as the operative position of the first support 31 changes, the location of the first support 31 also changes along the direction of development of the ideal reference straight line; in each of the operative positions allowed by the positioning means 30, said reference plane is above said first and second gas-fired burner 41, 42. Since heat tends to rise upwards, it is important that both the first and the second burner 41, 42 are positioned lower (with respect to the physical vertical) than the first and/or the second support 31, 32.
  • the means 40 for generating flames comprise a gas-fired grill burner 43.
  • the gas-fired grill burner 43 is normally positioned at the ceiling 21.
  • the gas-fired grill burner 43 operates mainly by irradiation.
  • the gas-fired grill burner 43 can advantageously be used for baking with the roasting jack 311.
  • the oven 1 comprises a user interface 51 for selecting a desired baking program according to the type of food to be baked (e.g. pizza, pasta, fish, etc.).
  • the user interface 51 enables to select the baking program also according to the type of foods to be baked simultaneously in the inner compartment 2.
  • advantageously foods to be baked are placed both on the first and on the second support 31, 32, in particular both on the first and on the second shelf 310, 320.
  • the operating manual of the oven 1 specifies at what distance from the lower base 22 it is best to place the first and/or the second shelf 310, 320; the distance from the lower base 22 can be specified indicating in which guides 301 the first and/or the second shelf 310, 320 are to be positioned.
  • the user interface 51 comprises means 510 for signalling information to the user.
  • the signalling means 510 indicate at what distance from the lower base 22 it is best to place the first and/or the second shelf 310, 320 according to the selected baking program. This can take place by signalling on which guides 301 the first and/or the second shelf 310, 320 are to be placed.
  • Said signalling means 510 comprise for example a display or a voice reproduction device.
  • the guides 301 comprise a presence sensor (which can advantageously be a weight sensor) that detects whether the first and/or the second shelf 310, 320 are positioned on the guide 301 indicated by the signalling means 510. If the user places the first and/or the second shelf 310, 320 on a different guide from the one previously signalled by the signalling means 510, then the signalling means 510 will notify the user of the positioning error of the first and/or of the second shelf 310, 320.
  • a presence sensor which can advantageously be a weight sensor
  • the oven 1 further comprises an electronic unit 53 for controlling at least a part of said flame generating means 40, said electronic control unit 53 operating according to the baking program selected through the user interface 51.
  • said electronic unit 53 implements a time sequence of activation/deactivation of at least the first and/or the second burner 41, 42.
  • the time sequence is selected among a plurality of pre-determined and pre-stored time sequences, each associated with a baking program.
  • the time sequence can be independent of thermodynamic parameters (e.g. temperature and/or humidity) measurable in the inner compartment 2 during the baking operation.
  • thermodynamic parameters e.g. temperature and/or humidity
  • the duration of at least one part of the activation and/or deactivation phases of the time sequence is equal to a predetermined value or it is determined by the reaching of a predetermined temperature in the inner compartment 2.
  • the time sequence can be influenced by the weight variation of the foods during the baking operation, measured by means of said weight sensor.
  • the time sequence of activation/deactivation implemented by the electronic unit 53 can also provide for the regulation over time of the thermal power delivered by the first gas-fired burner 41, said thermal power of the first gas-fired burner 41 being able to assume at least two values different from zero.
  • the time sequence of activation/deactivation implemented by the electronic unit 53 can also provide the regulation in time of the thermal power delivered by the second gas-fired burner 42, said thermal power of the second gas-fired burner 42 being able to assume at least two values different from zero.
  • the time sequence of activation/deactivation implemented by the electronic unit 53 can involve, in addition to the first and/or to the second burner 41, 42, also the grill burner 43.
  • the time sequence of activation/deactivation implemented by the electronic unit 53 can also provide the regulation in time of the thermal power delivered by the gas-fired grill burner 43, said thermal power of the gas-fired grill burner 43 being able to assume at least two values different from zero.
  • the predetermined time sequence is calibrated to uniform the baking times of a first and a second food positioned simultaneously on the first and on the second support 31, 32, in particular on the first and on the second shelf 310, 320.
  • the first and the second food can be of the same type or they can belong to predetermined types of foods.
  • the instructions that enable the electronic unit 53 to implement the time sequence of activation/deactivation can be stored in the baking oven during its manufacture, or they can be introduced at a later time through means for programming the oven 1 e.g. a programming keyboard (included in the user interface 51 or constituting a separate device from the user interface 51), or the oven 1 could comprise wireless or wired means for connecting to a remote database (e.g. the Internet).
  • a programming keyboard included in the user interface 51 or constituting a separate device from the user interface 51
  • the oven 1 could comprise wireless or wired means for connecting to a remote database (e.g. the Internet).
  • the oven 1 also comprises actuator means 54 for carrying out the commands provided by the electronic control unit 53, said actuator means being operatively interposed between said electronic unit 53 and at least a part of the flame generating means 40.
  • the actuator means 54 advantageously comprise shut-off means 521 that can prevent the flow of gas to the first and/or to the second burner 41, 42 and/or to the grill burner 43.
  • the shut-off means 521 comprise a first shut-off valve 522 that can prevent the flow of gas to the first burner 41.
  • the shut-off means 521 comprise a second shut-off valve 523 that can prevent the flow of gas to the second burner 42.
  • the shut-off means 521 comprise a third shut-off valve 529 that can prevent the flow of gas to the grill burner 43.
  • the actuator means 54 comprise means 55 for igniting the combustible mixture supplying at least part of the means 40 for generating baking flames (said igniting means 55 could, for example, be a device that generates sparks at the instant in which the ignition of the combustible mixture is desired).
  • the means 55 for igniting the mixture are positioned in proximity both to the first and with the second burner 41, 42.
  • the ignition means 55 are also positioned in proximity to the grill burner 43.
  • the actuator means 54 comprise regulating means 524 that regulate the flow of gas to the first and/or to the second burner 41, 42 and/or to the gas-fired grill burner 43.
  • the regulating means 524 comprise a first regulating valve 525 positioned upstream of the first burner 41.
  • the third shut-off valve 529 and the third regulating valve 530 are positioned on a line 531 for supplying the gas to the grill burner 43.
  • the shut-off means 521 comprise a single valve that can prevent flow both to the first and to the second burner 41, 42 and possibly also to the grill burner 43.
  • Said valve is positioned upstream of a downstream branch-off from which originate the lines 527, 528 supplying gas to the first burner 41 and to the second burner 42, the regulating valves 525, 526 being positioned on said lines 527, 528. If supply is to be shut off also to the grill burner 43, then said single valve is positioned upstream also of a branch-off from which originates the supply line 531 that brings the gas also to the grill burner 43, the regulating valve 530 being positioned on said line 531.
  • the first and/or the second gas-fired burner 41, 42 are in proximity to the lower base 22.
  • the second burner 42 is positioned in proximity to said bottom surface 24.
  • the second burner 42 develops along a direction joining said two lateral surfaces 25, 26.
  • the second burner 42 comprises a tubular element developing along the direction joining said two lateral surfaces 25, 26 for about 13-15 centimetres and its width is about 1 centimetre.
  • On the upper part of the tubular element are obtained slits that, when the second burner 42 is activated, subdivide the baking flame.
  • the second burner 42 is lower than the lower base 22 or it is substantially at the same height as the lower base 22.
  • the first burner 41 develops between said door 23 and said second burner 42.
  • the first burner 41 remains at a distance of a few centimetres both from the door 23 and from the second burner 42.
  • the first burner 41 is advantageously positioned underneath said lower base 22.
  • said first burner 41 is positioned underneath the first support 31, e.g. it is positioned underneath the first shelf 310. If the same food is to be baked simultaneously on the first and on the second shelf 310, 320, then the second burner 42 can be regulated to the maximum power and periodically the first burner 41 positioned immediately underneath the first shelf 310 will be activated to provide a heat flow destined particularly to baking the foods positioned on the first shelf 310. In this way, it is possible to prevent the foods placed on the second shelf 320 from being baked completely before the ones placed on the underlying first shelf 310, thereby obtaining a simultaneous optimal baking of the foods positioned on both shelves.
  • the lower base 22 has a plurality of holes 220 to enable a better distribution in the inner compartment 2 of the heat coming from the first burner 41 when said first burner 41 is positioned underneath said lower base 22.
  • the lower base 22 further comprises a slit 221 with greater size than the holes 220. Said slit 221 enables the entry into the inner compartment of the hot air coming from the second burner 42.
  • the first and the second burner 41, 42 could be side by side and develop along the direction joining the door 23 and the bottom surface 24.
  • the first shelf 310 when it is in said inner compartment 2, is positioned at a predetermined distance from the bottom surface 24, to promote the upward convective motion of the heat. In particular, this enables to promote the upward convective motion of the heat generated by the second burner 42 when said burner is placed at the lower base 22 in proximity to the bottom surface 24.
  • the oven 1 could also comprise a fan 6 that moves the air of the inner compartment 2, in such a way as to expand the baking functions which the oven can execute. In this way, it is possible to bake simultaneously on the first and on the second shelf 310, 320 foods that are even highly dissimilar from each other (in terms of type and baking time). It is possible, in this way, further to improve heat distribution in the inner compartment 2.
  • the time sequence of activation and deactivation of the rotation of the fan 6 is a function of the selected baking program and it is commanded by an electronic board.
  • said electronic board is a part of said electronic control unit 53.
  • the invention achieves important advantages.
  • gas baking e.g. in terms of energy savings or baking quality
  • electronic control which manages the activation, the regulation and the deactivation of the various burners according to the foods to be baked.

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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)
  • Electric Stoves And Ranges (AREA)
EP20080425193 2007-05-25 2008-03-25 Four de cuisson Ceased EP1994827A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRN20070028 ITRN20070028A1 (it) 2007-05-25 2007-05-25 Forno di cottura.
ITRN20070054 ITRN20070054A1 (it) 2007-11-07 2007-11-07 Forno di cottura.

Publications (1)

Publication Number Publication Date
EP1994827A1 true EP1994827A1 (fr) 2008-11-26

Family

ID=39730684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080425193 Ceased EP1994827A1 (fr) 2007-05-25 2008-03-25 Four de cuisson

Country Status (2)

Country Link
EP (1) EP1994827A1 (fr)
RU (1) RU2471124C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2251609A3 (fr) * 2009-05-15 2012-06-27 BSH Bosch und Siemens Hausgeräte GmbH Appareil de cuisson doté d'une moufle et procédé de fonctionnement d'un appareil de cuisson
KR20140081155A (ko) * 2012-12-21 2014-07-01 삼성전자주식회사 가스 오븐
EP2192351A3 (fr) * 2008-12-01 2017-11-01 BSH Hausgeräte GmbH Procédé destiné au fonctionnement d'un appareil de cuisson ainsi qu'appareil de cuisson

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404783A (en) * 1920-11-15 1922-01-31 Mckee Carolyn Burner for gas-stove ovens
AT301110B (de) * 1970-06-02 1972-08-25 Tirolia Werke Heiss J & Co Kg Backrohr
US3789826A (en) * 1972-06-05 1974-02-05 Eagle Range Mfg Co Runner construction for oven rack
GB2093984A (en) * 1981-02-19 1982-09-08 Thorn Gas Appliances Cooking ovens
US4930488A (en) * 1988-08-18 1990-06-05 Gas Research Institute Processor-controlled gas appliances and microprocessor-actuated valves for use therein
US5101805A (en) * 1990-05-25 1992-04-07 Samsung Electronics Co., Ltd. Gas cooker for oven and grill cooking
US5111028A (en) * 1989-09-11 1992-05-05 White Consolidated Industries, Inc. Method and control arrangement for cooking appliances
GB2253132A (en) * 1991-02-27 1992-09-02 Binder Wtb Labortech Gmbh Shelf for laboratory cabinets
DE4132161A1 (de) * 1991-09-27 1993-04-01 Seppelfricke Geb Gmbh Gasbackofen
WO1993014350A2 (fr) * 1992-01-21 1993-07-22 Fabio Lopes Teixeira Filho Cuisiniere a commande automatique
EP0608147A1 (fr) * 1993-01-21 1994-07-27 Whirlpool Corporation Commande électronique pour four de cuisson
DE4310235A1 (de) * 1993-03-30 1994-10-06 Bosch Siemens Hausgeraete Gar- Brat- und Backverfahren
GB2314925A (en) * 1996-06-26 1998-01-14 Waterford Foundry A gas cooker and a control system therefor
GB2319833A (en) * 1996-11-29 1998-06-03 New World Gas cooking appliance
EP0981027A1 (fr) * 1998-08-14 2000-02-23 Brandt Cooking Dispositif d'aide au positionnement de produits à cuire dans un four
US6481433B1 (en) * 2000-11-17 2002-11-19 Middleby Marshall Incorporated Conveyor oven having an energy management system for a modulated gas flow

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2052175C1 (ru) * 1992-03-11 1996-01-10 Научно-производственное объединение "Сплав" Бытовая газовая плита

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404783A (en) * 1920-11-15 1922-01-31 Mckee Carolyn Burner for gas-stove ovens
AT301110B (de) * 1970-06-02 1972-08-25 Tirolia Werke Heiss J & Co Kg Backrohr
US3789826A (en) * 1972-06-05 1974-02-05 Eagle Range Mfg Co Runner construction for oven rack
GB2093984A (en) * 1981-02-19 1982-09-08 Thorn Gas Appliances Cooking ovens
US4930488A (en) * 1988-08-18 1990-06-05 Gas Research Institute Processor-controlled gas appliances and microprocessor-actuated valves for use therein
US5111028A (en) * 1989-09-11 1992-05-05 White Consolidated Industries, Inc. Method and control arrangement for cooking appliances
US5101805A (en) * 1990-05-25 1992-04-07 Samsung Electronics Co., Ltd. Gas cooker for oven and grill cooking
GB2253132A (en) * 1991-02-27 1992-09-02 Binder Wtb Labortech Gmbh Shelf for laboratory cabinets
DE4132161A1 (de) * 1991-09-27 1993-04-01 Seppelfricke Geb Gmbh Gasbackofen
WO1993014350A2 (fr) * 1992-01-21 1993-07-22 Fabio Lopes Teixeira Filho Cuisiniere a commande automatique
EP0608147A1 (fr) * 1993-01-21 1994-07-27 Whirlpool Corporation Commande électronique pour four de cuisson
DE4310235A1 (de) * 1993-03-30 1994-10-06 Bosch Siemens Hausgeraete Gar- Brat- und Backverfahren
GB2314925A (en) * 1996-06-26 1998-01-14 Waterford Foundry A gas cooker and a control system therefor
GB2319833A (en) * 1996-11-29 1998-06-03 New World Gas cooking appliance
EP0981027A1 (fr) * 1998-08-14 2000-02-23 Brandt Cooking Dispositif d'aide au positionnement de produits à cuire dans un four
US6481433B1 (en) * 2000-11-17 2002-11-19 Middleby Marshall Incorporated Conveyor oven having an energy management system for a modulated gas flow

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2192351A3 (fr) * 2008-12-01 2017-11-01 BSH Hausgeräte GmbH Procédé destiné au fonctionnement d'un appareil de cuisson ainsi qu'appareil de cuisson
EP3399238A3 (fr) * 2008-12-01 2019-02-20 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil de cuisson ainsi qu'appareil de cuisson
EP3627054A1 (fr) * 2008-12-01 2020-03-25 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil de cuisson ainsi qu'appareil de cuisson
EP2251609A3 (fr) * 2009-05-15 2012-06-27 BSH Bosch und Siemens Hausgeräte GmbH Appareil de cuisson doté d'une moufle et procédé de fonctionnement d'un appareil de cuisson
KR20140081155A (ko) * 2012-12-21 2014-07-01 삼성전자주식회사 가스 오븐
EP2746668A3 (fr) * 2012-12-21 2016-05-25 Samsung Electronics Co., Ltd Four à gaz
US10203117B2 (en) 2012-12-21 2019-02-12 Samsung Electronics Co., Ltd. Gas oven

Also Published As

Publication number Publication date
RU2471124C2 (ru) 2012-12-27
RU2008111051A (ru) 2009-09-27

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