EP3546832A1 - Küchenherd mit hybrid-stromversorgung - Google Patents

Küchenherd mit hybrid-stromversorgung Download PDF

Info

Publication number: EP3546832A1
Authority: EP; European Patent Office
Prior art keywords: outlet openings; fan; panel; side edge; kitchen oven
Prior art date: 2018-03-27
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

EP18425021.5A

Other languages

English (en)

French (fr)

Other versions

EP3546832B1 (de

Inventor

Auro Po

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.)

STEEL Srl

Original Assignee

Steel Srl

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.)

2018-03-27

Filing date

2018-03-27

Publication date

2019-10-02

2018-03-27 Application filed by Steel Srl filed Critical Steel Srl

2018-03-27 Priority to EP18425021.5A priority Critical patent/EP3546832B1/de

2019-10-02 Publication of EP3546832A1 publication Critical patent/EP3546832A1/de

2021-04-28 Application granted granted Critical

2021-04-28 Publication of EP3546832B1 publication Critical patent/EP3546832B1/de

Status Active legal-status Critical Current

2038-03-27 Anticipated expiration legal-status Critical

Images

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
- F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
- F24C1/02—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified adapted for the use of two or more kinds of fuel or energy supply
- 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
- 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
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/008—Ranges

Definitions

the present invention relates to the field of kitchen ovens of the type intended for food cooking, and particularly it relates to a cooking oven for household applications arranged to allow dishes inserted into the cooking cavity thereof to be cooked.
the different power supply affects - although not to a decisive extent - the cooking dynamics and modes of use of the oven, so that several users can have different tastes and consider the one or the other mode more suitable for cooking different foods.
An oven with hybrid power supply wherein the cooking cavity can be alternatively heated in a gas or electric mode, would represent therefore a possibly interesting solution, allowing the cooking type to be varied according to the different needs and preferences of the users.
Ventilation systems nowadays widely employed both in electric ovens and in gas ovens, perform a convective heat transmission which allows the internal temperature of the cooking chamber to be uniformed as much as possible.
the shape thereof is necessarily linked to the type and position of the heat source, be it a gas burner or an electrical resistor. From this perspective, the use of two alternative power supplies would thus involve a duplication of the ventilation system, with the subsequent disadvantages due to the resulting structural complexity.
the technical problem underlying the present invention is thus to make a kitchen oven which solves the above-complained prior art limits, and which can, in particular, operate in the ventilated mode both with a gas power supply and with an electric power supply, with satisfactory cooking results in both cases.
the oven according to the invention is not only able to effectively operate both with a gas power supply and with an electric power supply, but it has also a ventilation system - defined by the fan and by the overhanging perforated cover - arranged to obtain an unusually homogeneous heat distribution in both power supply modes.
the Applicant has pointed out the asymmetrical shape of the side outlet openings of the cover, which is believed to offset the flow asymmetry linked to the clockwise or counterclockwise movement of the fan.
the first outlet openings can have an asymmetrical development along the vertical axis with respect to the opposite second outlet openings, i.e. the morphologies of the outlet openings on the two side edges of the cover are identical but reversed.
the first and second outlet openings can have the shape of a rectangle trapezoid and be defined by C-shaped brakes, facing the rear panel, of the respective side edges.
the inclination of the trapezoid oblique side advantageously allows the opening amplitude along the vertical axis to be varied, so as to progressively fit the transition to the flow asymmetry due to the fan movement.
the inclined sides of rectangle trapezoids which define the first outlet openings and the second outlet openings can be advantageously aligned with each other along a same line inclined with respect to the vertical, respectively departing from and approaching the rear panel when moving downwards.
the above-mentioned transition progressiveness is so maintained from one opening to the next one.
Outlet openings have preferably a vertically-elongate shape, fitting to the elongate shape of the side edge whereon they are obtained.
Outlet openings have preferably a variable amplitude comprised between 30% and 90% of the thickness of the respective side edge.
first outlet openings are two and the second outlet openings are two, preferably positioned near lower and upper corners of the respective first or second side edge.
first upper opening will have an identical and overturned shape with respect to the second lower opening
first lower opening will have an identical and overturned shape with respect to the second upper opening.
the upper edge of the cover has no openings, the entirety of the outlet openings being obtained on side edges.
inlet openings are all made in a central area of the main face of the cover and they define an air intake grid directly facing the fan.
the main gas burner is preferably located below the lower panel, so that the flame is not open in the cooking cavity.
the oven can advantageously comprise a gas thermostat arranged to stop the gas power supply to the main gas burner upon reaching a temperature set by the user and an electric thermostat arranged to stop the electric power supply to the electrical resistor.
the oven can further comprise a secondary gas burner at the upper panel, with a grill cooking function.
the cooking modes which can be controlled by the control unit can comprise a grill mode wherein said secondary gas burner is actuated, preferably without driving the fan into rotation.
the cooking modes which can be controlled by the control unit can also comprise a static gas mode wherein the main gas burner is operated without operating the fan.
a kitchen oven according to the present invention is generally identified with 100.
Kitchen oven means in particular in the present patent an oven intended for cooking or anyway preparing foods and dishes, regardless of the industrial or household destination of use thereof. The latter is however to be considered as preferred and the below-described specific embodiment refers thereto.
the kitchen oven 100 has a muffle 1, individually illustrated in the attached figures 2-6 , intended to be mounted within an external structure which coats it and whereon a control interface 21 for the user is provided.
the whole kitchen oven 100 and the muffle 1 are illustrated in the attached figures in the normal configuration of use thereof.
the relative and absolute positions and orientations of the various elements composing the oven defined by terms like upper and lower, above and below, horizontal and vertical or other equivalent terms, are always to be interpreted with reference to that configuration.
Other terms like front and rear, right or left, clockwise or counterclockwise and equivalents are to be interpreted by considering as a point of view the one of a user facing the main opening of the kitchen oven 100 in an operating position, and which considers the parts which are closer thereto as front parts.
the muffle 1 defines therewithin a cooking cavity 2 intended for introducing the foods to be heated or cooked.
the substantially parallelepiped cooking cavity 2 is bounded at the bottom by a lower panel 3, from whose rectangular perimeter a first side panel 4a, a rear panel 60 and a second side panel 4b raise, which connect to an upper panel 5.
the fourth side face of the cooking cavity 2 defines a front opening 8, reclosable by a suitable door 80.
a main gas burner 9 capable of heating the above cooking cavity 2 is present below the lower panel 3, which has peripheral passage slots.
a secondary gas burner 15 directly facing the cooking cavity 2 with a grill cooking function is provided below the upper panel 5.
the rear panel 60 has a central hollow surrounded by a peripheral portion which joins to the other panels. That central hollow is covered by a cover 7, slightly projecting with respect to the peripheral portion of the panel 60.
the peripheral portion of the rear panel 60 has at the top the mouth of a fume exhaust channel 16 which extends at the top outside the cooking cavity 2.
both the rear panel 60 and the cover 7 can be easily made from a single plate through traditional moulding techniques.
the rear bottom of the cooking cavity 2 closes therefore on a rear surface 6 peripherally defined by the flat portion of the rear panel 60 and centrally defined by the projecting cover 7, the latter defining the interface between cooking cavity 2 and ventilation cavity 10.
the cover 7 provides a substantially box-like geometry, i.e. a rectangular-parallelepiped-like one, where a front main face 70 is joined to the rear panel 60 by means of faces with a limited thickness, indicatively comprised between 8 mm and 20 mm, which are referred to in the present description with the term edges.
the cover 7 comprises a first side edge 71a and a second side edge 71b, facing the respective side panels 4a, 4b; as well as an upper edge 72 and a lower edge 73.
the cover 7 defines, together with the fan 11, a ventilation system adapted to define a convective current within the oven.
the cover 7 has therefore air inlet openings 74, obtained in front of the fan 11, and air outlet openings 75a, 75b obtained on the side edges 71a, 71b.
the rotation of the fan 11 radially blows the air entering from the inlet opening 74 towards the outlet openings 75a, 75b.
the air flow is heated within the ventilation cavity 10; when instead the main gas burner 9 is actuated, the fan 11 sucks an already-hot air flow defining a convective current within the cooking cavity 2.
the inlet openings 74 are defined by a plurality of vertical slots, which define a round grid facing the body of the fan 11.
the electrical resistor 12 is placed instead beyond the diameter of said round grid, i.e. it does not face the inlet openings 74.
the outlet openings 75a, 75b split in first outlet openings 75a and second outlet openings 75b, respectively obtained on the two opposite side edges 71a, 71b of the cover 7.
the first outlet openings 75a and the second outlet openings 75b have an asymmetrical shape, i.e. the profile of the openings on the first side edge 71a is overturned with respect to the profile of the openings on the second side edge 71b.
first outlet openings 75a - which in the embodiment described here, are the openings on the left - are wider in the lower part and narrow at the top; on the contrary the second outlet openings 75b - in the present version, on the right - are narrow in the lower portion and widen at the top.
the above-mentioned shape is linked to the fan rotational direction, clockwise in the embodiment described here.
the outlet openings 75a, 75b must be made in a specular way with respect to what is said above: the first outlet openings 75a, wide at the base and narrow at the top, will be in this case on the right; the second outlet openings 75b, narrow at the base and wide at the top, will be on the left.
the outlet openings 75a, 75b are two on both side edges 71a, 71b, respectively located near the upper and lower corner of the respective edge.
the outlet openings 75a, 75b are bounded by C-shaped recesses obtained by shearing on the edge of the cover 7 and by the surface of the rear panel 60 which the edge approaches.
the perimeter substantially in the shape of a rectangle trapezoid, is thus defined by a long side at the interface with the rear panel, and by the three profile sides of the C-shaped recess.
the latter ones comprise two parallel short sides, which define the thickness of the outlet opening 75a, 75b, and an oblique long side with respect to the vertical corner of the cover 7.
the skew long sides of the outlet openings 75a, 75b obtained on the same side edge 71a, 71b are aligned.
a progressive widening/narrowing of the slots defining the outlet openings 75a, 75b on a same edge is thus defined.
the area surfaces of the various outlet openings are also pointed out: the first upper outlet opening 75a has a first upper area Aau; the first lower outlet opening 75a has a first lower area Aa L ; the second upper outlet opening 75b has a second lower area Abu; the second lower outlet opening 75a has a second lower area Ab L . It is observed that the first upper area Aau is equal to the second lower area Ab L , while the first lower area Aa L is equal to the second upper area Abu.
the kitchen oven 1 has, as hinted above, a control interface 21 connected to a control unit 20.
the control unit 20 is operatively connected in turn to the different functional units of the kitchen oven 1, among which at least: the main gas burner 9, the secondary gas burner 15, the electrical resistor 12 and the fan 11.
control unit 20 implements by operating the above-said different functional units.

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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)

EP18425021.5A 2018-03-27 2018-03-27 Küchenherd mit hybrid-energieversorgung Active EP3546832B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
EP18425021.5A EP3546832B1 (de)	2018-03-27	2018-03-27	Küchenherd mit hybrid-energieversorgung

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP18425021.5A EP3546832B1 (de)	2018-03-27	2018-03-27	Küchenherd mit hybrid-energieversorgung

Publications (2)

Publication Number	Publication Date
EP3546832A1 true EP3546832A1 (de)	2019-10-02
EP3546832B1 EP3546832B1 (de)	2021-04-28

Family

ID=62245204

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP18425021.5A Active EP3546832B1 (de)	2018-03-27	2018-03-27	Küchenherd mit hybrid-energieversorgung

Country Status (1)

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EP (1)	EP3546832B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20230250970A1 (en) *	2022-02-10	2023-08-10	Whirlpool Corporation	Baffle assembly for an oven to generate distinct air flow regions within a cooking chamber having a different temperature

Citations (8)

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EP0580940A2 (de) *	1992-07-27	1994-02-02	BOSCH-SIEMENS HAUSGERÄTE GmbH	Backofen
DE10313916A1 (de) *	2003-03-27	2004-10-07	BSH Bosch und Siemens Hausgeräte GmbH	Backofen
US20040200825A1 (en) *	2003-04-10	2004-10-14	Maytag Corporation	Combination heating system for a cooking appliance
EP2003401A2 (de) *	2007-06-15	2008-12-17	BSH Bosch und Siemens Hausgeräte GmbH	Gargerätegebläsevorrichtungseinheit
WO2009012526A1 (en) *	2007-07-23	2009-01-29	Clara Appliances Pty Ltd	An oven
EP2110612A2 (de) *	2008-04-15	2009-10-21	Indesit Company S.P.A.	Belüfteter Ofen
WO2016016780A1 (en) *	2014-07-29	2016-02-04	Ma.Ti.Ka. S.R.L.	Panel for ovens
US20160258633A1 (en) *	2015-03-06	2016-09-08	Lg Electronics Inc.	Cooking device

2018
- 2018-03-27 EP EP18425021.5A patent/EP3546832B1/de active Active

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0580940A2 (de) *	1992-07-27	1994-02-02	BOSCH-SIEMENS HAUSGERÄTE GmbH	Backofen
DE10313916A1 (de) *	2003-03-27	2004-10-07	BSH Bosch und Siemens Hausgeräte GmbH	Backofen
US20040200825A1 (en) *	2003-04-10	2004-10-14	Maytag Corporation	Combination heating system for a cooking appliance
EP2003401A2 (de) *	2007-06-15	2008-12-17	BSH Bosch und Siemens Hausgeräte GmbH	Gargerätegebläsevorrichtungseinheit
WO2009012526A1 (en) *	2007-07-23	2009-01-29	Clara Appliances Pty Ltd	An oven
EP2110612A2 (de) *	2008-04-15	2009-10-21	Indesit Company S.P.A.	Belüfteter Ofen
WO2016016780A1 (en) *	2014-07-29	2016-02-04	Ma.Ti.Ka. S.R.L.	Panel for ovens
US20160258633A1 (en) *	2015-03-06	2016-09-08	Lg Electronics Inc.	Cooking device

Also Published As

Publication number	Publication date
EP3546832B1 (de)	2021-04-28

Publication	Publication Date	Title
US10989418B2 (en)	2021-04-27	Cooking appliance
US4431892A (en)	1984-02-14	Ventilated modular cooktop cartridge
US20090134155A1 (en)	2009-05-28	Vent grille of microwave oven
EP2087287B1 (de)	2017-01-04	Verfahren zur steuerung eines ofens
EP3620722B1 (de)	2023-01-25	Umluftofen mit gasbeheizung
US12101865B2 (en)	2024-09-24	Combination microwave and hood system
KR100821731B1 (ko)	2008-04-14	오븐의 예열 방법
KR101904660B1 (ko)	2018-11-28	조리기기
WO2006025133A1 (ja)	2006-03-09	加熱調理器
KR101207641B1 (ko)	2012-12-03	가열조리기
US6723970B1 (en)	2004-04-20	Ventilation system for a cooking appliance
EP3546832B1 (de)	2021-04-28	Küchenherd mit hybrid-energieversorgung
US11421894B2 (en)	2022-08-23	Spill guard for a gas oven burner
US20070107712A1 (en)	2007-05-17	Heating cooker
EP3425286B1 (de)	2020-11-25	Kochvorrichtung und betriebsverfahren dafür
CN118973450A (zh)	2024-11-15	具有烤制和加热空气流功能的烹饪设备
TW201814217A (zh)	2018-04-16	加熱調理器
EP4235039A1 (de)	2023-08-30	Küchenherd mit gegenläufigen ventilatoren
JP6697671B2 (ja)	2020-05-27	オーブントースター
KR101223312B1 (ko)	2013-01-16	오븐
CN217785248U (zh)	2022-11-11	烹饪组件
GB2349457A (en)	2000-11-01	Cooking appliance
JPS5938486B2 (ja)	1984-09-17	熱風循環式オ−ブンレンジ
EP1972856B1 (de)	2016-08-10	Kochvorrichtung
JP2017190877A (ja)	2017-10-19	ガスバーナ

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