EP1972855A1 - Four de cuisine avec porte de fermeture refroidie à l'air - Google Patents

Four de cuisine avec porte de fermeture refroidie à l'air Download PDF

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Publication number
EP1972855A1
EP1972855A1 EP07005932A EP07005932A EP1972855A1 EP 1972855 A1 EP1972855 A1 EP 1972855A1 EP 07005932 A EP07005932 A EP 07005932A EP 07005932 A EP07005932 A EP 07005932A EP 1972855 A1 EP1972855 A1 EP 1972855A1
Authority
EP
European Patent Office
Prior art keywords
door
gap
air flow
oven
duct
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
EP07005932A
Other languages
German (de)
English (en)
Other versions
EP1972855B1 (fr
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.)
Franke Technology and Trademark Ltd
Original Assignee
Niro Plan 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 Niro Plan AG filed Critical Niro Plan AG
Priority to ES07005932T priority Critical patent/ES2434516T3/es
Priority to EP20070005932 priority patent/EP1972855B1/fr
Publication of EP1972855A1 publication Critical patent/EP1972855A1/fr
Application granted granted Critical
Publication of EP1972855B1 publication Critical patent/EP1972855B1/fr
Not-in-force 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
    • F24C15/00Details
    • F24C15/006Arrangements for circulation of cooling air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/02Doors specially adapted for stoves or ranges
    • F24C15/04Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the present invention refers to a kitchen oven with an air cooled closing door.
  • Kitchen ovens are known to have closing doors provided with parallel glass panes in order to form at least one gap through which air flows, and the continuous removal of said air during oven operation makes it possible to avoid heating of the external glass pane, so that users may not inadvertently get burned during oven operation when coming into contact with the external glass pane.
  • fans are used, which generate an air flow which is tangential to the glass panes, in order to remove the air flowing out at the upper side of the gap.
  • the fan is placed on the inside of the oven and generates an air flow perpendicular to the plane of the door, when the door is closed.
  • Such an air flow typically passes through a generally horizontal conduit with an outlet section positioned at the top of the gap.
  • the air flow generated by the fan passes along the upper end of said door in order to generate an a depression which draws a certain flow of air to pass through the same gap in a upwards direction.
  • the gap communicates with the outside through a lower air inlet opening.
  • the object of the present invention consists in providing an oven with an air cooled door, having structural and functional characteristics which meet the above said need, at the same time avoiding the disadvantages cited with reference to the prior art.
  • 1 generally indicates an oven according to the present invention.
  • the oven 1 is a built-in oven mounted inside a cupboard.
  • the oven 1 comprises, generally, a support structure which defines a cooking chamber 2, known as a muffle, provided with an opening on one side, for accessing a cooking cavity 3 inside, a door 4 for closing the chamber 2, means for moving air, which will be described in greater detail later, and means for heating the inside of the cavity 3.
  • a cooking chamber 2 known as a muffle
  • the closing door 4 is hinged by means of two invisible struts to the chamber 2, so that it can be rotated between a closed position, in which the door 4 is disposed in a substantially vertical plane in order to close the opening and avoid access to the cavity 3, and an open position in which said door 4 is, for instance, inclined with respect to the vertical plane, in order to allow access to the cooking cavity 3 through said opening.
  • the means for heating the inside of the cavity 3 comprise a pair of electric resistors 10, one of which is placed inside the cavity 3 near the upper wall and the other is positioned in a slot 11 adjacent to the lower wall of chamber 2.
  • the air moving means comprise a blower 5, mounted above chamber 2, and positioned on the side opposite to where the door 4 is mounted, in order to generate an air flow perpendicular to the plane of door 4 when in the closed position.
  • the blower 5 communicates with a suction duct 6, through which a first air flow is drawn, in a way which will be described later, and with an expulsion duct 7, through which said first air flow, drawn through the suction duct 6, is expelled.
  • the suction duct 6 and the expulsion duct 7 are overlapping and separated by a common separation wall 67 and are formed by a respective flared conduit, which is substantially horizontal.
  • the conduit in the suction duct 6 has an inlet section 6a, positioned above the opening of chamber 2 and which preferably spans the whole width of door 4.
  • the conduit of expulsion duct 7 has an outlet section 7a positioned above the inlet section 6a of the suction duct 6 and preferably spans the whole width of door 4.
  • the cross-section of the suction duct 6 increases starting from the inlet section 6a, towards the bottom where the blower 5 is positioned, whereas the cross-section of expulsion duct 7, in the upper position, decreases starting from blower 5 up to the outlet section 7a.
  • the cross-section measured at the inlet section 6a is smaller than the outlet cross-section 7a.
  • the door 4 comprises an external plate 41, an internal plate 42 and two further plate-like elements, reference numeral 43, all of which are opposed and parallel to each other in order to form three gaps, wherein the outermost is indicated by 51 and the other two internal gaps are indicated by 52.
  • the plates 41, 42 and the plate-like elements 43 are held together to form the door 4, by a support frame comprising a pair of lateral struts 8 formed by a hollow profile. On each strut 8 a shaped element is attached, in order to form guiding channels 8a ( fig. 4 ) in which the plate-like elements 43 may slide.
  • the guiding channels 8a are formed in a direction generally parallel to the longitudinal extension of struts 8.
  • Plates 41 and 42 are mounted on two opposed faces of the struts 8.
  • the outermost plate 41 is supported on the lower side by a pair of small brackets 12 ( fig. 6 ) which are fixed to the lower ends of the two struts 8 by means of screws
  • the innermost plate 42 is supported by a profile 9 ( fig. 6 ), which is laterally fixed to the two brackets 12 by means of screws.
  • the two brackets 12 isolate the outermost plate 41 from the two struts, avoiding direct heat transfer between the strut and the respective plate.
  • the profile 9 has three seats 9a at its ends for holding the lower edges of the innermost plate 42 and the edges of the two plate-like elements 43.
  • a gripping handle 50 is attached, which extends along the whole width of door 4 near its upper edge.
  • the supporting frame of the door 4 further comprises a terminal body 20 ( fig. 5 ) associated to the two struts 8, and positioned along the upper edge of door 4.
  • said body 20 has a first portion 21 which forms a deflector which, when the door is in its closed position, forms an extension of the separating wall 67 of the two ducts 6 and 7, reducing the flow section for the air flow blown to the outside through the expulsion duct 7, and a second separating portion 22, which separates and seals off the two innermost gaps 52 from the outermost gap 51.
  • the deflector 21 when the door 4 is in its closed position, forms a passageway 70 with a variable cross-section, which decreases towards the direction of expulsion of the air flow; the deflector forms a sort of terminal opening for the expulsion duct 7 with an overhanging horizontal portion 23 of the oven supporting structure.
  • the air flow through the expulsion duct 7 is forced to pass through a further narrowing 70 before being completely expelled.
  • the second separating portion 22 is formed by a flat profile integral with the deflector 21, which is inserted into the central gap 52, directly contacting the outermost plate-like element 43 along its whole width, inhibiting the flow of air from the innermost gaps 52 towards the outermost one 51.
  • said second portion 22 may be put into contact with the outermost face, as long as it ensures a seal which inhibits the air from flowing from the two innermost gaps 52 towards the outermost gap 51 and vice versa.
  • the fixing of the terminal body 20 to the struts 8 is obtained by interposing the two lateral blocking portions 24, associated to the free ends of the body 20, which are shaped in such a way as to cooperate with the terminal body 20 and the two struts 8.
  • teeth 25 protrude from each lateral blocking portion 24, which correspond to the gaps 51, 52.
  • the two innermost gaps 52 isolated from the outermost gap 51 communicate with the suction duct 6, whose inlet section 6a is aligned to the upper edge of the innermost plate 42 and to the innermost plate-like element 43 when the door 4 is in its closed position.
  • the lower wall of the suction duct 6 is horizontally positioned at a height such that it is aligned to the upper edge of the innermost plate 42, when the door 4 is closed.
  • the edge of the innermost plate-like element 43 reaches a level lower than that of the innermost plate 42, whereas the rest of the outermost plate-like element 43 reaches a height greater than the one reached by the innermost plate 42.
  • the outermost gap 51 when the door 4 is in its closed position, is connected to the expulsion duct 7 at the narrowing 70.
  • the outermost gap 51 opens at the top directly behind the deflector 21 of the terminal body 20, with respect to the flow direction.
  • all gaps 51, 52 are connected to the outside through an opening which preferably spans the whole width of the door 4, which is left free at the lower edge of the same door 4.
  • the blower 5 whose rotational axis is horizontal and parallel to the plane of door 4, draws a first air flow to rise through the two innermost gaps 52, via the suction duct 6, which is connected only to the two gaps 52.
  • Said first air flow is immediately expelled by the same blower 5, through the expulsion duct 7, which is positioned above the suction duct 6. Before leaving the oven 1, said first air flow passes through the narrowing 70, which lies directly behind the expulsion duct 7.
  • the first horizontal air flow due to a Venturi effect, draws a second air flow upwards, which rises through the outermost gap 51, at the narrowing 70 formed by the deflector 21, and finally leaves the oven, as shown by the arrows in fig. 5 .
  • the rate at which hot air is replaced in the outermost gap 51 i.e. the one adjacent to the outermost plate 41, is extremely high, so that excessive heating of the outermost plate 41 is avoided.
  • the oven 1 is provided with a chimney 80 for extracting exhaust gases from the cooking chamber 2, which is connected to the expulsion duct 7.
  • blower 5 is connected to a shirt 90 adjacent to the back of the chamber 2, in which a motor 91 for a common radial ventilator 92 is provided, in order to generate a replacement of air inside the shirt 90 as well.
  • the door 4 may comprise only two gaps, connected to the suction duct 6 and narrowing 70, respectively.
  • the oven with an air cooled door according to the present invention meets the requirements and overcomes the disadvantages referenced in the introduction of the present invention, with reference to the prior art.
  • the oven according to the present invention allows a continuous replacement of the hot air which is in direct contact with the outermost glass pane of door 4, maintaining a suitable temperature and ensuring the thermal security requirements for users.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Drying Of Solid Materials (AREA)
  • Electric Stoves And Ranges (AREA)
EP20070005932 2007-03-22 2007-03-22 Four de cuisine avec porte de fermeture refroidie à l'air Not-in-force EP1972855B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES07005932T ES2434516T3 (es) 2007-03-22 2007-03-22 Horno de cocina con puerta de cierre enfriada por aire
EP20070005932 EP1972855B1 (fr) 2007-03-22 2007-03-22 Four de cuisine avec porte de fermeture refroidie à l'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070005932 EP1972855B1 (fr) 2007-03-22 2007-03-22 Four de cuisine avec porte de fermeture refroidie à l'air

Publications (2)

Publication Number Publication Date
EP1972855A1 true EP1972855A1 (fr) 2008-09-24
EP1972855B1 EP1972855B1 (fr) 2013-08-14

Family

ID=38720687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070005932 Not-in-force EP1972855B1 (fr) 2007-03-22 2007-03-22 Four de cuisine avec porte de fermeture refroidie à l'air

Country Status (2)

Country Link
EP (1) EP1972855B1 (fr)
ES (1) ES2434516T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108891A1 (fr) * 2008-04-10 2009-10-14 Whirpool Corporation Four intégré avec système de refroidissement amélioré
WO2011069667A1 (fr) 2009-12-10 2011-06-16 Electrolux Home Products Corporation N. V. Porte de four ventilée pour four de cuisson domestique
CN102188169A (zh) * 2010-03-02 2011-09-21 三星电子株式会社 烤箱
ITTO20130847A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
ITTO20130849A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
ITTO20130852A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
US9125537B2 (en) 2010-09-30 2015-09-08 Samsung Electronics Co., Ltd. Upright vacuum cleaner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655132A1 (fr) 1989-11-27 1991-05-31 Merloni Elettrodomestici Spa Dispositif de refroidissement de porte de four.
EP0900984A1 (fr) 1997-09-04 1999-03-10 AEG Hausgeräte GmbH Méthode pour évacuer un condensat d'une enceinte de four et four avec des moyens pour évacuer un condensat
US5918589A (en) 1996-05-10 1999-07-06 Whirlpool Corporation Low moisture/closed door broil oven ventilation system
WO2006064457A1 (fr) * 2004-12-13 2006-06-22 Arcelik Anonim Sirketi Appareil de cuisson

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655132A1 (fr) 1989-11-27 1991-05-31 Merloni Elettrodomestici Spa Dispositif de refroidissement de porte de four.
US5918589A (en) 1996-05-10 1999-07-06 Whirlpool Corporation Low moisture/closed door broil oven ventilation system
EP0900984A1 (fr) 1997-09-04 1999-03-10 AEG Hausgeräte GmbH Méthode pour évacuer un condensat d'une enceinte de four et four avec des moyens pour évacuer un condensat
WO2006064457A1 (fr) * 2004-12-13 2006-06-22 Arcelik Anonim Sirketi Appareil de cuisson

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108891A1 (fr) * 2008-04-10 2009-10-14 Whirpool Corporation Four intégré avec système de refroidissement amélioré
US8039775B2 (en) 2008-04-10 2011-10-18 Whirlpool Corporation Built-in oven with an improved cooling system
WO2011069667A1 (fr) 2009-12-10 2011-06-16 Electrolux Home Products Corporation N. V. Porte de four ventilée pour four de cuisson domestique
CN102188169A (zh) * 2010-03-02 2011-09-21 三星电子株式会社 烤箱
EP2363648A3 (fr) * 2010-03-02 2012-02-29 Samsung Electronics Co., Ltd. Four
KR101474494B1 (ko) * 2010-03-02 2014-12-23 삼성전자 주식회사 오븐
US9022017B2 (en) 2010-03-02 2015-05-05 Samsung Electronics Co., Ltd. Oven
US9125537B2 (en) 2010-09-30 2015-09-08 Samsung Electronics Co., Ltd. Upright vacuum cleaner
WO2015056208A1 (fr) * 2013-10-18 2015-04-23 Indesit Company S.P.A. Appareil de cuisson à usage domestique
WO2015056207A1 (fr) * 2013-10-18 2015-04-23 Indesit Company S.P.A. Appareil de cuisson à usage domestique
ITTO20130852A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
WO2015056206A1 (fr) * 2013-10-18 2015-04-23 Indesit Company S.P.A. Appareil de cuisson à usage domestique
ITTO20130849A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
ITTO20130847A1 (it) * 2013-10-18 2015-04-19 Indesit Co Spa Apparecchio di cottura domestico
CN105814366A (zh) * 2013-10-18 2016-07-27 盈得喜股份有限公司 家用烹调用具
CN106030213A (zh) * 2013-10-18 2016-10-12 盈得喜股份有限公司 家用烹调用具
EP3058282B1 (fr) 2013-10-18 2018-09-26 Whirlpool EMEA S.p.A Appareil electromenager de cuisson
US10260759B2 (en) 2013-10-18 2019-04-16 Whirlpool EMEA S.p.A Household cooking appliance
US10260758B2 (en) 2013-10-18 2019-04-16 Whirlpool Emea S.P.A. Household cooking appliance
US11092344B2 (en) 2013-10-18 2021-08-17 Whirlpool Emea S.P.A. Household cooking appliance

Also Published As

Publication number Publication date
ES2434516T3 (es) 2013-12-16
EP1972855B1 (fr) 2013-08-14

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