US3719180A - Device for heat treatment by way of forced gas convection, forming a bakery, pastry, pork-butchery oven or the like - Google Patents

Device for heat treatment by way of forced gas convection, forming a bakery, pastry, pork-butchery oven or the like Download PDF

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Publication number
US3719180A
US3719180A US00111241A US3719180DA US3719180A US 3719180 A US3719180 A US 3719180A US 00111241 A US00111241 A US 00111241A US 3719180D A US3719180D A US 3719180DA US 3719180 A US3719180 A US 3719180A
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United States
Prior art keywords
wall
walls
muffle
interior
pair
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US00111241A
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English (en)
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F Pere
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CAPIC CAILLAREC Ets
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CAPIC CAILLAREC Ets
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    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B1/00—Bakers' ovens
    • A21B1/02—Bakers' ovens characterised by the heating arrangements
    • A21B1/24—Ovens heated by media flowing therethrough
    • A21B1/26—Ovens heated by media flowing therethrough by hot air
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B1/00—Bakers' ovens
    • A21B1/02—Bakers' ovens characterised by the heating arrangements
    • A21B1/24—Ovens heated by media flowing therethrough
    • A21B1/28—Ovens heated by media flowing therethrough by gaseous combustion products
    • 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

Definitions

  • a device for heat treatment comprising a muffle, heating means, a fan and a treatment chamber limited on one of its sides by an inner wall of the muffle, the cross-sections of said chamber having the shape of trapezia, the larger base of which is located on the fan France....2016 ............7003575 side of the device.
  • the heating means are constituted by at least one gas burner.
  • the device comprises a casing forming a heat exchanging element surrounding said heating means and being placed within the hot gases circulating in the muffle.
  • the present invention has for its object a device for heat treatment of food products, of the forced gas convection type, adapted to be used, in particular, as a bakery, pastry, pork-butchery oven or the like, for baking, pre-heating, or heating food products.
  • the heat treatment device enables the various aforesaid drawbacks to be remedied.
  • the heat treatment device pertains to the general type described above and is characterized in that the heating means are constituted by at least one gas burner of the baror tube-type,or of the single-jet type, the latter being protected from the air flows produced in the oven chamber by a casing or enclosure which surrounds it at least on a portion of its periphery, the said casing or enclosure being located within the hot gases circulating in the muffle, so as to constitute a heat exchanging and distributing element.
  • the said fan is secured to the rear wall of the muffle, and the said casing is constituted by two substantially parallel and vertical metal sheets perpendicular to the fan shaft and located on either side of the said burner which is preferably constituted by a horizontal gas bar or tube, the said sheets being located in front of the fan and their side edges being bent towards the front and joined together, whereas a passageway is provided transversely of and through the said sheets in confronting relationship to the said fan,
  • the said bent edges being located at a certain distance from the side walls of the muffle so as to allow the passage of the hot gases proceeding from the space provided between the said casing and the rear wall of the muffle towards the interior of the chamber.
  • the device comprises two casings of the aforesaid type, placed symmetrically with respect to the said medial plane, within the treatment chamber proper, in immediate proximity to the muffle walls, so that the said casing is licked on one side by the gas flow entering the said chamber and on the other side by the gas flow passing through the said casing towards the said fan.
  • FIG. 1 is a horizontal sectional view of a heat treat- 7 ment device according to a first form of embodiment of the present invention
  • FIG. 2 is a vertical sectional view upon the line II-II of FIG. 1 of the same device
  • FIG. 3 is a perspective view of the rear metal sheet of the casing of the heat treatment device of FIG. 1
  • FIG. 4 is a vertical sectional view, in parallel relationship to the inlet door, of a heat treatment device according to a second form of embodiment of the invention
  • FIG. 5 is a longitudinal sectional view upon the line VV of FIG. 4 of the said device.
  • the heat treatment device comprises a muffle 1, made for instance from a refractory or heat insulating material, two fans 2 and 3 secured to the rear wall 1c of the muffle, a gas tube burner 4, a casing 5 for the latter and a trolley 6 for moving in or out the products to be treated, the said muffle being closed by means of a door 1a.
  • the gas tube burner 4 is fed through a gas (town gas, butane or propane) intake piping, not shown for the sake of clarity the gas tube burner is arranged on the sole or bed lb of the oven and is fed with air supplied from the exterior through two ducts 7 (portions 7a and 7b) and 8 (portions 8a and 8b) opening into the casing 5.
  • gas town gas, butane or propane
  • the treatment chamber 9 is constituted by the portion in front of the casing 5, i.e., the space comprised between the said casing and the door
  • the treatment chamber 9 is intended to contain the products to be treated which may be arranged on a system of removable or stationary trays or plates connected to the side wall of the muffle 1 however, as shown in FIG. 1, a trolley 6 is preferably used owing to the fact that the heating means and the means ensuring the circulation of the hot gases leave the medial portion of the internal volume defined by the muffle l altogether free, thus facilitating and accelerating the charging and discharging operations.
  • the general system of circulation of the hot gases within the muffle is as shown by the arrows F in FIG. 1 and results from the trapezoidal shape of the cross-sections of the inner walls of the muffle, normal to the medial plane 10 in which are placed the fans 2 and 3, in combination with the use of deflecting means which, in this case, are constituted by the casing 5 itself as well as the dihedral rounded angles of the inner rear corners 11a and 11b of the muffle l, axial passageways such as 12 and 13 being provided through the casing 5 in alignment with the fans 2 and 3.
  • FIG. 3 is a detailed view of the structure of the casing 5 surrounding the gas-tube burner 4 so as to protect the latter from the hot gas flow proceeding from the treatment chamber 9 or conveyed thereto the said casing is constituted by two vertical and parallel metal sheets 14 and which are substantially perpendicular to the axes of the fans 2 and 3 the side edges such as 15a of the metal sheet 15 are bent towards the front, and so are the side edges such as 14a of the metal sheet 14 the edges such as 14a and 15a are sealingly joined together, as by welding, so as to close as completely as possible the inner space of the casing 5 for the same reason, the communication between the said inner space and the general volume of the muffle at the passageways l2 and 13 is practically completely prevented by means of cylindrical metal sheets 12a and 13a connected at their ends to the sheets 14 and 15 the metal sheets 12a and 13a are provided at least at their upper portion with openings 16, the dimensions of which may be adjustable on the other hand, the diameter of the metal sheets 12a or 13a is slightly greater than that of the fan,
  • the metal sheet 14 of the casing 5 is also provided on its outer surface with substantially horizontal ribs or fins 17 serving to improve heat exchange and favor the transverse flow of hot gases in the space 18 located between the casing 5 and the rear wall 1c of the muffle.
  • the lower end of the casing 5 is connected to the sole or bed 1b whereas its upper end is connected to the muffle vault 1d thus, the combustion gases may escape through the chimney 18 opening at 18a into the upper medial portion of the rear wall 10 of the muffle, a short metal sheath being provided to connect the opening 18a with an opening 18b located opposite the opening 8a in the rear metal sheet 14 of the casing 5.
  • the present device provides the following improvements as compared with the already known types of gas ovens the required temperature within the treatment chamber 9 is attained more rapidly owing to the fact that a greater proportion of the sensible heat of the combustion gases than in the known gas ovens is transferred directly to the gases which are made to circulate in the chamber 9 by the fans 2 and 3, owing, on the one hand, to the fact that the heat of the flames is not stored in a heat insulator which subsequently restores it to the circulating gases and, on the other hand, to the fact that the combustion gases conveyed to the chimney are not as hot as in the known devices owing to the remoteness of the chimney with respect to the gas tube burner and owing to the particular position of the lower orifice of the chimney which is not located in the muffle vault (braking effect at exit) 1 thermal efficiency is improved, for as already stated, a greater proportion of combustion heat is transferred to the gases circulating in the treatment chamber 9, as
  • the orifices such as 16 ensure direct passage into the circulating hot gases blown back into the chamber 9 by the fans 2 and 3 of a portion of the burnt gases produced in the casing 5, thus imparting more flexibility to the heating means in operation without prejudicing the stability of the flames.
  • the heat treatment device shown in FIGS. 4 and 5 comprises a muffle 20 and at least one fan 21 secured to the vault 20a of the muffle and located in the medial plane 25 thereof, opposite an opening 22 provided in an inner wall 23 of the muffle, defining a treatment chamber 24 in the general volume of the muffle, the said inner wall 23 being preferably constituted by a metal sheet which is for instance suspended by suitable means from the oven vault 20a (in the case considered, the number of fans used depends upon the depth of the muffle, measured from its front wall provided with the access door to its rear wall).
  • the heating means are constituted by two gas-tube burners 26a and 26b, each surrounded by a casing 27a or 27b constituted by an invagination of the metal sheet 23, the said invagination being open at the level of the flames of the gas burner tubes, so that the combustion gases are conveyed back into the general circulation system of the gases in the treatment chamber the flames are protected from the direct effect of the flow owing to the end portions such as 27'a, the combustible gas being injected at the rear end of the gas burner tubes by an injector 30 supported by an arm or bracket 300, which allows auxiliary atmospheric air to be carried along by the gas.
  • the primary air supply orifices are at least two in number and arranged either in the front portion or in the side portion of the device of course, the said primary air may also be mixed beforehand with the fuel, a secondary air supply being possibly provided at the level of the flames.
  • a secondary air supply being possibly provided at the level of the flames.
  • a muffle having a front wall provided with a door, a rear wall opposite said front wall, opposed side walls extending between said front and rear walls and connected thereto, and top and bottom walls extending between and connected to the remaining walls, said muffle having a vertical medial plane situated midway between and being parallel to said side walls, said top and rear walls of said muffle forming a pair of walls which with said opposed side walls and said bottom and front walls define an interior treatment chamber which in a plane normal to said medial plane is of trapezoidal configuration on each side of said medial plane, at least one fan situated in close proximity to and carried by one of said pair of muffle walls, in said medial plane with the interior space of trapezoidal configuration on each side of said medial plane in said plane normal to the latter having its largest base situated in the region of said fan, an an inner wall situated adjacent that one of said pair of walls which carries said fan with the latter situated between said inner wall and said one of said pair
  • said one of said pair of walls is said rear wall of said muffle, said inner wall being situated in front of said rear wall and being in the form of a metal sheet, said casing including a front metal sheet situated forwardly of said inner wall and having a pair of opposed vertical side edges, said inner wall also having a pair of opposed vertical side edges respectively fixed with said ogpiostgdvertictzlill sidce1 e ining wi sa1 edges of said front metal sheet, an opposed side walls of said muffle said gaps through which the hot gases flow, at least one of said metal sheets having a rounded configuration and said casing having a lower interior region in which said burner is located, and a chimney connected to an upper portion of said casing and communicating with the interior thereof, and a circular wall defining an air channel, extending between and connected to said inner wall and from metal sheet, the latter being formed with an opening aligned with said opening of said inner wall so that said circular wall defines an air channel for flow of air through the latter channel toward said fan,

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Baking, Grill, Roasting (AREA)
  • Drying Of Solid Materials (AREA)
US00111241A 1970-02-02 1971-02-01 Device for heat treatment by way of forced gas convection, forming a bakery, pastry, pork-butchery oven or the like Expired - Lifetime US3719180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7003575A FR2079466A5 (es) 1970-02-02 1970-02-02

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US3719180A true US3719180A (en) 1973-03-06

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Country Link
US (1) US3719180A (es)
DE (1) DE2103827A1 (es)
ES (1) ES387809A1 (es)
FR (1) FR2079466A5 (es)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926106A (en) * 1972-06-15 1975-12-16 Burger Eisenwerke Ag Food-treatment apparatus with circulated hot combustion gas
US4039278A (en) * 1974-03-18 1977-08-02 Andrew Denholm Bakery oven
US4094631A (en) * 1976-01-15 1978-06-13 Grieve Douglas V Multiple outlet blower scroll for an industrial oven
DE3031041A1 (de) * 1980-07-11 1982-01-28 Niro-Plan Ag, Zug Gas- oder elektrisch beheizter umluftofen
US4512327A (en) * 1983-02-28 1985-04-23 Buderus Aktiengesellschaft Muffle oven for heating foodstuffs
US4515143A (en) * 1984-04-27 1985-05-07 Jabas Florian H Moving air oven for baking and the like
US4556043A (en) * 1984-09-17 1985-12-03 Lincoln Manufacturing Company, Inc. Air delivery system for an impingement food preparation oven including a conical air deflector
US4626661A (en) * 1984-04-16 1986-12-02 Lincoln Manufacturing Company, Inc. Air delivery system for an impingement food preparation oven
US4671250A (en) * 1986-07-28 1987-06-09 Thermo Electron Corporation Direct-firing gas convection oven
US5165889A (en) * 1989-05-19 1992-11-24 Import-Export Research And Development, Inc. Gas convection oven with heat exchanger and baffles
DE4224797A1 (de) * 1992-07-27 1994-02-03 Bosch Siemens Hausgeraete Backofen
US5385137A (en) * 1993-10-21 1995-01-31 The Lucks Company U-tube heat exchanger for bakery ovens
US5845631A (en) * 1997-08-21 1998-12-08 Kerry Ingredients, Inc. Heat exchanger for convection baking ovens
US6069344A (en) * 1999-01-27 2000-05-30 Hp Intellectual Corp. Convection feature for use in ovens
US6371104B1 (en) 2000-07-21 2002-04-16 Wayne/Scott Fetzer Company Convection oven with gas burner
US20060225727A1 (en) * 2005-04-11 2006-10-12 Lg Electronics Inc. Convection chamber of cooking device
US20080190299A1 (en) * 2007-02-08 2008-08-14 Daniele Turrin Cooking oven with premix burner for boilers
US20090064984A1 (en) * 2005-04-22 2009-03-12 Johannes Antonius Maria Kuhne Oven having a uniform hot air flow in the preparation space
US20120125313A1 (en) * 2008-09-23 2012-05-24 Kavaring Cooking Systems B.V. Apparatus for preparing food and air guide member therefor
US20140144423A1 (en) * 2012-11-27 2014-05-29 Jeahyuk Wie Gas oven range
CN104457206A (zh) * 2014-11-07 2015-03-25 重庆汇田机械制造有限公司 蚕茧烤房加热循环系统
US9127888B2 (en) 2010-07-02 2015-09-08 Asc Process Systems Industrial oven for curing composite material structures
EP2927601A1 (en) * 2014-04-03 2015-10-07 LG Electronics, Inc. Cooking appliance
KR101564505B1 (ko) 2014-04-03 2015-10-29 엘지전자 주식회사 조리기기
KR20160088552A (ko) * 2015-01-16 2016-07-26 엘지전자 주식회사 조리기기
US20170082294A1 (en) * 2015-09-21 2017-03-23 Lg Electronics Inc. Cooking device
EP2927602B1 (en) * 2014-04-03 2018-06-13 Lg Electronics Inc. Cooking appliance
IT201900008037A1 (it) * 2019-06-04 2020-12-04 Atihc Apparecchiatura per la cottura degli alimenti
IT201900008034A1 (it) * 2019-06-04 2020-12-04 Atihc Apparecchiatura per la cottura degli alimenti
US20220282871A1 (en) * 2021-03-05 2022-09-08 Electrolux Home Products, Inc. Oven bake heating channel exchange system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828760A (en) * 1973-05-23 1974-08-13 Lca Corp Oven
DE2739198C2 (de) * 1977-08-31 1985-06-27 Küppersbusch AG, 4650 Gelsenkirchen Gerät zum Garen von Eßwaren mittels Heißluft
DE102011079233A1 (de) * 2011-07-15 2013-01-17 BSH Bosch und Siemens Hausgeräte GmbH Belüftung eines Ofenraums
CN103518787A (zh) * 2013-10-23 2014-01-22 新麦机械（无锡）有限公司 一种微风层炉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124382A (fr) * 1955-05-17 1956-10-09 Appareil de cuisson à air chaud
US3148674A (en) * 1963-06-24 1964-09-15 Wolf Range Corp Air circulating oven
US3324844A (en) * 1965-11-09 1967-06-13 Vulcan Hart Corp Heat distribution system for gas-fired ovens
US3384068A (en) * 1966-12-09 1968-05-21 American Gas Ass Gas oven system
US3605717A (en) * 1969-11-10 1971-09-20 Crown X Inc Convection oven

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124382A (fr) * 1955-05-17 1956-10-09 Appareil de cuisson à air chaud
US3148674A (en) * 1963-06-24 1964-09-15 Wolf Range Corp Air circulating oven
US3324844A (en) * 1965-11-09 1967-06-13 Vulcan Hart Corp Heat distribution system for gas-fired ovens
US3384068A (en) * 1966-12-09 1968-05-21 American Gas Ass Gas oven system
US3605717A (en) * 1969-11-10 1971-09-20 Crown X Inc Convection oven

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926106A (en) * 1972-06-15 1975-12-16 Burger Eisenwerke Ag Food-treatment apparatus with circulated hot combustion gas
US4039278A (en) * 1974-03-18 1977-08-02 Andrew Denholm Bakery oven
US4094631A (en) * 1976-01-15 1978-06-13 Grieve Douglas V Multiple outlet blower scroll for an industrial oven
DE3031041A1 (de) * 1980-07-11 1982-01-28 Niro-Plan Ag, Zug Gas- oder elektrisch beheizter umluftofen
US4512327A (en) * 1983-02-28 1985-04-23 Buderus Aktiengesellschaft Muffle oven for heating foodstuffs
US4626661A (en) * 1984-04-16 1986-12-02 Lincoln Manufacturing Company, Inc. Air delivery system for an impingement food preparation oven
US4515143A (en) * 1984-04-27 1985-05-07 Jabas Florian H Moving air oven for baking and the like
US4556043A (en) * 1984-09-17 1985-12-03 Lincoln Manufacturing Company, Inc. Air delivery system for an impingement food preparation oven including a conical air deflector
US4671250A (en) * 1986-07-28 1987-06-09 Thermo Electron Corporation Direct-firing gas convection oven
US5165889A (en) * 1989-05-19 1992-11-24 Import-Export Research And Development, Inc. Gas convection oven with heat exchanger and baffles
DE4224797A1 (de) * 1992-07-27 1994-02-03 Bosch Siemens Hausgeraete Backofen
US5385137A (en) * 1993-10-21 1995-01-31 The Lucks Company U-tube heat exchanger for bakery ovens
US5845631A (en) * 1997-08-21 1998-12-08 Kerry Ingredients, Inc. Heat exchanger for convection baking ovens
US6069344A (en) * 1999-01-27 2000-05-30 Hp Intellectual Corp. Convection feature for use in ovens
US6371104B1 (en) 2000-07-21 2002-04-16 Wayne/Scott Fetzer Company Convection oven with gas burner
US20060225727A1 (en) * 2005-04-11 2006-10-12 Lg Electronics Inc. Convection chamber of cooking device
EP1712846A1 (en) * 2005-04-11 2006-10-18 LG Electronics Inc. Convection chamber of cooking device
US7368683B2 (en) 2005-04-11 2008-05-06 Lg Electronics Inc. Convection chamber of cooking device
US20090064984A1 (en) * 2005-04-22 2009-03-12 Johannes Antonius Maria Kuhne Oven having a uniform hot air flow in the preparation space
US8635995B2 (en) * 2005-04-22 2014-01-28 Koninklijke Fabriek Inventum B.V. Oven having a uniform hot air flow in the preparation space
US20080190299A1 (en) * 2007-02-08 2008-08-14 Daniele Turrin Cooking oven with premix burner for boilers
US8146488B2 (en) * 2007-02-08 2012-04-03 Electrolux Professional Spa Cooking oven with premix burner for boilers
US20120125313A1 (en) * 2008-09-23 2012-05-24 Kavaring Cooking Systems B.V. Apparatus for preparing food and air guide member therefor
US10448785B2 (en) * 2008-09-23 2019-10-22 Koninklijke Philips N.V. Apparatus for preparing food and air guide member therefor
US11337552B2 (en) 2008-09-23 2022-05-24 Koninklijke Philips N.V. Apparatus for preparing food and air guide member therefor
US9127888B2 (en) 2010-07-02 2015-09-08 Asc Process Systems Industrial oven for curing composite material structures
US20140144423A1 (en) * 2012-11-27 2014-05-29 Jeahyuk Wie Gas oven range
US9488377B2 (en) * 2012-11-27 2016-11-08 Lg Electronics Inc. Gas oven range
CN104970708A (zh) * 2014-04-03 2015-10-14 Lg电子株式会社 烹饪设备
KR101564505B1 (ko) 2014-04-03 2015-10-29 엘지전자 주식회사 조리기기
EP4394230A3 (en) * 2014-04-03 2024-09-18 LG Electronics Inc. Cooking appliance
EP4108991A1 (en) * 2014-04-03 2022-12-28 LG Electronics, Inc. Cooking appliance
US9874357B2 (en) 2014-04-03 2018-01-23 Lg Electronics Inc. Cooking appliance
US9939159B2 (en) 2014-04-03 2018-04-10 Lg Electronics Inc. Cooking appliance, burner and burner assembly
EP2927602B1 (en) * 2014-04-03 2018-06-13 Lg Electronics Inc. Cooking appliance
EP3483506A1 (en) * 2014-04-03 2019-05-15 LG Electronics Inc. Cooking appliance
EP3910240A1 (en) * 2014-04-03 2021-11-17 LG Electronics Inc. Cooking appliance
EP2927601A1 (en) * 2014-04-03 2015-10-07 LG Electronics, Inc. Cooking appliance
CN104457206A (zh) * 2014-11-07 2015-03-25 重庆汇田机械制造有限公司 蚕茧烤房加热循环系统
US10982845B2 (en) 2015-01-16 2021-04-20 Lg Electronics Inc. Cooking device
US10222058B2 (en) 2015-01-16 2019-03-05 Lg Electronics Inc. Cooking device
US11725812B2 (en) 2015-01-16 2023-08-15 Lg Electronics Inc. Cooking device
KR20160088552A (ko) * 2015-01-16 2016-07-26 엘지전자 주식회사 조리기기
US10982860B2 (en) * 2015-09-21 2021-04-20 Lg Electronics Inc. Cooking device
US10330323B2 (en) * 2015-09-21 2019-06-25 Lg Electronics Inc. Cooking device
US20170082294A1 (en) * 2015-09-21 2017-03-23 Lg Electronics Inc. Cooking device
IT201900008034A1 (it) * 2019-06-04 2020-12-04 Atihc Apparecchiatura per la cottura degli alimenti
IT201900008037A1 (it) * 2019-06-04 2020-12-04 Atihc Apparecchiatura per la cottura degli alimenti
US20220282871A1 (en) * 2021-03-05 2022-09-08 Electrolux Home Products, Inc. Oven bake heating channel exchange system
US12031727B2 (en) * 2021-03-05 2024-07-09 Electrolux Home Products, Inc. Oven bake heating channel exchange system

Also Published As

Publication number Publication date
DE2103827A1 (de) 1971-08-19
ES387809A1 (es) 1973-05-16
FR2079466A5 (es) 1971-11-12

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