EP1726883A2 - Lüftung einer Ofentür - Google Patents

Lüftung einer Ofentür Download PDF

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Publication number
EP1726883A2
EP1726883A2 EP06114433A EP06114433A EP1726883A2 EP 1726883 A2 EP1726883 A2 EP 1726883A2 EP 06114433 A EP06114433 A EP 06114433A EP 06114433 A EP06114433 A EP 06114433A EP 1726883 A2 EP1726883 A2 EP 1726883A2
Authority
EP
European Patent Office
Prior art keywords
door
air
ventilation
cooking oven
ventilation means
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
EP06114433A
Other languages
English (en)
French (fr)
Other versions
EP1726883B1 (de
EP1726883A3 (de
Inventor
Sylvain Raimond
Fabien Oberle
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.)
Groupe Brandt SAS
Original Assignee
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 Brandt Industries SAS filed Critical Brandt Industries SAS
Publication of EP1726883A2 publication Critical patent/EP1726883A2/de
Publication of EP1726883A3 publication Critical patent/EP1726883A3/de
Application granted granted Critical
Publication of EP1726883B1 publication Critical patent/EP1726883B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C15/00—Details
    • F24C15/006—Arrangements for circulation of cooling air
    • 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
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the present invention relates to baking ovens comprising a muffle whose front face is closed by a door, and surrounded by a housing comprising an upper wall, side walls and a bottom wall.
  • It relates more specifically to ovens equipped with a ventilation device comprising a fan arranged in a housing placed in a space between the housing and the muffle and intended to create an air flow between inlet and outlet openings, and ventilation means of the door for creating inside said door a fresh air channel.
  • a traditional oven includes a ventilation device whose air inlet openings are placed in the bottom of the door.
  • the air circulation is generated by a fan creating a depression in the upper part of the door either by direct suction or by a venturi effect. This air flow is intended to ventilate the door of a furnace from bottom to top.
  • this ventilation device described in a traditional oven has the disadvantage of creating an area of no ventilation in a part of the door because of the position of the vacuum zone. As a result, the temperature of the outer ice of the door is warmer in the previously defined area.
  • the object of the present invention is to overcome the disadvantages mentioned above by providing optimal air circulation while minimizing the cost of the construction of the ventilation device.
  • the present invention aims at a baking oven comprising a muffle whose front face is closed by a door, and surrounded by a housing comprising an upper wall, side walls and a bottom wall, a ventilation device comprising a fan connected to at least one ventilation duct placed in a space between the housing and the muffle and for creating air circulation between inlet and outlet openings.
  • the door comprises a ventilation means of said door for creating inside said door at least one fresh air flow transverse to the door from outside said door and flowing in the direction of at least one specific area to cool.
  • the fresh air flow is directed to the suction vacuum zone to cool the top of the door.
  • this ventilation of the door makes it possible to cool the door all along the ventilation channel and in particular in the zone requiring a supply of fresh air.
  • the construction of the ventilation device requires only one piece that minimizes the cost of achieving this principle of ventilation.
  • the ventilation means of the door comprises at least one air inlet opening in a side wall.
  • the ventilation means of the door comprises at least one air outlet orifice directed towards the front face of the cooking oven.
  • said at least one air inlet orifice is traversed by a plane substantially perpendicular to the plane passing through said at least one air outlet orifice.
  • the air ventilation is optimized by imposing a directed circulation and promoting the cooling of the depression zone. located in the upper part of the door.
  • the ventilation means of the door is a crosspiece of thermoplastic material located above the top of the door and extending over the entire width of the door.
  • a baking oven 1 comprises a muffle 2 whose front face 3 is closed by a door 4, and surrounded by a housing 5 comprising an upper wall 6, side walls 7 and a bottom wall 8, a ventilation device 9 comprising a fan 10 connected to at least one ventilation duct 11 placed in a space 12 between the housing 5 and the muffle 2 and intended to create an air flow between inlet and outlet openings 13 and 14.
  • a door 4 of a baking oven 1 comprises a structure 20 of substantially rectangular shape consisting of a counter-door 15, said counter-door 15 is made of metal, at least three referenced ice creams. 16 to 18.
  • the door 4 comprises an outer mirror 16 farthest from the muffle 2 of the baking oven 1, an inner mirror 17 vis-à-vis the opening 19 of the muffle 2 and at least one intermediate ice 18 disposed between the outer ice 16 and the inner ice 17.
  • Said door 4 is connected to the muffle 2 of the cooking oven 1 by hinges (not shown).
  • the counter door 15 is made to support at least two windows being rectangular in shape by assembly elements as known.
  • the counter door 15 comprises an inward clearance of the door 4 so as to insert the inner window 17.
  • each of the windows 16 to 18 is formed a volume of air to dissipate heat in the door 4 of the oven 1.
  • the outer glass 16 is arranged to receive a handle (not shown) of door 4 fixed by bearing on the outer surface of said outer glass 16 by known means, such as for example by screwing. Said handle can be screwed into a generally metal handle bar (not shown).
  • the inner window 17 facing the opening 19 of the muffle 2 is fixed to the door 15 by means of clipping or by means of assembly by gluing.
  • the assembly consisting of the muffle and the surrounding thermal insulation is considered as a single element. This set will be called muffle later in this document.
  • the door 4 comprises at least three mirrors 16, 17 and 18 parallel to each other and spaced so as to form two air passages for the flow of an air flow.
  • the door 4 may comprise four windows 16 to 18 including two intermediate windows 18 spaced so as to form three air knives 22, 23 whose blade of central air 23 allows the flow of an air flow represented by the arrows F1, as shown in FIG.
  • the two air knives 22 placed between the intermediate windows 18 and said inner 17 and outer ice 16 can allow the flow or not of a flow of air.
  • Said door 4 comprises a ventilation means 28 of said door 4 for creating inside said door 4 at least one fresh air flow F2 transverse to the door 4 from the outside of said door 4 and circulating in direction of at least one specific zone 30 to be cooled, as illustrated in FIGS. 5 and 6.
  • Said ventilation means 28 of the door 4 comprises an air channel 29 for directing the flow of fresh air F2 transversely to the door 4.
  • the air channel 29 of the ventilation means 28 extends on either side of the door 4 of the cooking oven 1.
  • the ventilation means 28 of the door 4 is positioned in abutment against the door 15.
  • the ventilation means 28 of the door 4 is a crossmember comprising at least side walls 36.
  • Said ventilation means 28 of the door 4 is a cross member thermoplastic located above the top of the door 4 and extending over the entire width of the door 4.
  • This ventilation means 28 of the door 4 is assembled so as to react elastically against the frame of the counter door 15, to absorb the deformations experienced by the windows 16 to 18 constituting the door 4 during the operation of the cooking oven 1.
  • the first air flow F1 enters at least one lower air inlet passage 24 located in the bottom of the door 4 of the cooking oven 1 and leaves at at least one upper air outlet passage 25 located at the top of the door 4 through at least one air inlet opening 26 located on a bottom wall 27 of the ventilation means 28.
  • the flow of air F1 passes through the ventilation means 28 of the door 4 by entering through said at least one air inlet opening 26 and out through said at least one air outlet opening 32 of the ventilation means 28.
  • the ventilation means 28 of the door 4 cooperate with said at least one inner window 17.
  • said at least one air inlet opening 26 is at least as wide as the distance separating the inner ice 17 and the intermediate ice 18.
  • a variant of this embodiment is to achieve said at least one an air inlet opening 26 at least as wide as the distance between the outer ice 16 and the intermediate ice 18.
  • the ventilation means 28 comprises a first air inlet opening 26 having a width corresponding to the spacing between the inner ice 17 and the said at least one intermediate ice 18 and a second opening of air inlet 26 having a width corresponding to the spacing between the outer ice 16 and said at least one intermediate ice 18.
  • the door 4 comprises four referenced glasses 16 to 18, two ice-creams are called intermediate ice-creams 18.
  • the air circulation is effected only between the intermediate windows 18 and not between the intermediate windows 18 and said outer ice 16 and inner ice 17.
  • Said at least one air inlet opening 26 is at least as wide as the distance separating the two intermediate windows 18.
  • Said specific zone 30 to be cooled is located at the top of the door 4.
  • This specific zone 30 to be cooled is generally arranged along the outer ice 16 since the air is sucked by a fan 10 creating a negative pressure in the air.
  • a ventilation duct 11 located near the inner ice 17.
  • fixing means 34 are arranged on the front wall 31 of the ventilation means 28 of the door 4.
  • This front wall 31 comprises conventional means for fixing and supporting the handle.
  • These fixing means 34 can also be arranged on the lower wall 27 of the ventilation means 28 of the door 4.
  • the ventilation means 28 of the door 4 is fixed on the frame of the counter door 15 in a known manner.
  • the ventilation means 28 of the door 4 comprises at least one ventilation channel 29 of which at least one air inlet 35 is located in a side wall 36 so as to form at least one air passage for the flow of an air flow represented by arrows F2.
  • the section of the air inlet orifice extends in a range between 100 and 300 mm 2 , and preferably of the order of 180 mm 2 .
  • the ventilation means 28 of the door 4 comprises an air inlet opening 35 in each side wall 36.
  • Said at least one ventilation channel 29 of the ventilation means 28 extends between at least a first air inlet port 35 and at least a second air inlet port 35. Said at least two air inlet ports 35 air inlet 35 make it possible to produce at least one ventilation channel 29 over the width of the door 4.
  • the ventilation means 28 of the door 4 comprises at least one air outlet orifice 33 directed towards the front face 3 of the cooking oven 1.
  • Said at least one air outlet orifice 33 can be in a plane substantially parallel to an outlet opening 14 formed in a front face 3 of the cooking oven 1.
  • the flow of air passing through said at least one air outlet orifice 33 may also be in a plane substantially perpendicular to the door 4 of the cooking oven 1 in the closed position.
  • Said at least one air outlet orifice 33 allows an air flow between the door 4 and the ventilation device 9 of the cooking oven 1.
  • the air flow is effected from the door 4 through the orifice air outlet 33 and the inlet opening 13 of a front face 3 of the cooking oven 1 to the ventilation device 9.
  • Said at least one air outlet orifice 33 is formed in the center of the ventilation means 28 of the door 4.
  • Said at least one air outlet orifice 33 is formed in said at least one ventilation channel 29 of the ventilation means 28.
  • Said at least one air outlet orifice 33 can be connected to two ventilation ducts 29. each extending to an air inlet 35 formed in a side wall 36 of the ventilation means 28 of the door 4.
  • the section of the air outlet orifice 33 extends in a range of between 200 and 600 mm 2 , and preferably of the order of 350 mm 2 .
  • said at least one air inlet 35 is traversed by a plane substantially perpendicular to the plane passing through said at least one air outlet orifice 33.
  • the door 4 may comprise at least one air inlet opening 38 along at least one lateral face 39 of said door 4.
  • This air inlet opening 38 is preferably on each lateral face 39 of the door 4, as shown in Figures 7 and 8.
  • This opening may represent a section extending in a range between 700 mm 2 and 1200 mm 2 , and preferably of the order of 960 mm 2 .
  • This air inlet opening 38 makes it possible to increase the heat exchange between the inside of the door 4 and the outside of the cooking oven 1.
  • a mixing zone is formed by the flow of air F1 coming from the inside of the door 4 by the at least one air outlet opening 32 with the air flow F 2 of the at least one air outlet orifice 33 formed in the ventilation means 28 of the door 4.
  • This mixing zone of the air flows makes it possible to cool the specific zone 30 of the door 4.
  • the ventilation means 28 of the door 4 has the shape of an L whose front wall 30 bears on the outer mirror 16, the lower wall 27 is supported on the against door 15, said at least one air outlet opening 32 and said at least one air outlet orifice 33 are in connection with at least one air inlet 13 formed in the front face 3 of the cooking oven 1.
  • this ventilation means 28 comprising the air channel 29 is arranged in the upper part of the door 4 and at least in part above the opening 19 of the muffle 2.
  • Said at least one ventilation channel 29 of the ventilation means 28 extends in a space located in an upper third of the door 4 and over the width of said door 4.
  • the ventilation means 28 would be arranged in the lower part of the door 4 and at least in part below the opening 19 of the muffle 2.
  • this ventilation means 28 has an air outlet orifice 33 in communication with the ventilation duct 11 located at the rear of said ventilation means 28, and at least one inlet port of air 35. This construction generates an air flow, illustrated by the reference F2, inside the ventilation means 28 as described above.
  • said at least one air inlet 35 is placed in a region furthest away from the muffle 2 of the baking oven 1.
  • a consequence of the invention is that the fan 10 does not require additional power to create a suction in the air channel 29.
  • said at least one air inlet opening 35 is placed in at least one side face 39 of the door 4 for aesthetic reasons.
  • the ventilation means 28 of the door 4 may comprise at least one striker 37 for locking the door 4, as shown in FIG. .
  • the invention responds in particular to the concern of achieving an internal ventilation of the door 4 of a cooking oven by an air channel 29 to cool a specific area located at said at least one air outlet opening 32 without which ventilation of the door 4 does not allow to meet the normative requirements unless using thermal screens or infrared treatments on the ice.
  • This construction is simple, effective, economical and allows for a door with a small thickness, with large ice and reduce the number of infrared treatments on ice.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Ovens (AREA)
EP06114433.3A 2005-05-26 2006-05-23 Backofen Active EP1726883B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0505416A FR2886378B1 (fr) 2005-05-26 2005-05-26 Ventilation d'une porte de four

Publications (3)

Publication Number Publication Date
EP1726883A2 true EP1726883A2 (de) 2006-11-29
EP1726883A3 EP1726883A3 (de) 2009-07-15
EP1726883B1 EP1726883B1 (de) 2020-02-26

Family

ID=35536337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114433.3A Active EP1726883B1 (de) 2005-05-26 2006-05-23 Backofen

Country Status (2)

Country Link
EP (1) EP1726883B1 (de)
FR (1) FR2886378B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2333424A1 (de) * 2009-12-10 2011-06-15 Electrolux Home Products Corporation N.V. Herdtür mit Belüftung für einen Haushaltsherd

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230119372A (ko) * 2022-02-07 2023-08-16 엘지전자 주식회사 조리기기

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8800332U1 (de) * 1988-01-14 1988-02-25 Gaggenau-Werke Haus- Und Lufttechnik Gmbh, 7560 Gaggenau Backofen, insbesondere Einbaubackofen
EP1022517B1 (de) * 1999-01-25 2004-04-21 CANDY S.p.A. Tür für pyrolytischen Ofen
DE10349313A1 (de) * 2003-10-23 2005-05-25 BSH Bosch und Siemens Hausgeräte GmbH Backofen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2333424A1 (de) * 2009-12-10 2011-06-15 Electrolux Home Products Corporation N.V. Herdtür mit Belüftung für einen Haushaltsherd
WO2011069667A1 (en) * 2009-12-10 2011-06-16 Electrolux Home Products Corporation N. V. A vented oven door for a domestic cooking oven

Also Published As

Publication number Publication date
FR2886378B1 (fr) 2007-08-03
EP1726883B1 (de) 2020-02-26
EP1726883A3 (de) 2009-07-15
FR2886378A1 (fr) 2006-12-01

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