EP0833110B1 - Four avec un dispositif soufflant - Google Patents

Four avec un dispositif soufflant Download PDF

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Publication number
EP0833110B1
EP0833110B1 EP97113865A EP97113865A EP0833110B1 EP 0833110 B1 EP0833110 B1 EP 0833110B1 EP 97113865 A EP97113865 A EP 97113865A EP 97113865 A EP97113865 A EP 97113865A EP 0833110 B1 EP0833110 B1 EP 0833110B1
Authority
EP
European Patent Office
Prior art keywords
baking oven
baffle wall
turbulence
oven according
tabs
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.)
Expired - Lifetime
Application number
EP97113865A
Other languages
German (de)
English (en)
Other versions
EP0833110A1 (fr
Inventor
Johann Klement
Katja Dipl.-Oeco.Troph. Stein
Klemens Dipl.-Ing. Roch (Fh)
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0833110A1 publication Critical patent/EP0833110A1/fr
Application granted granted Critical
Publication of EP0833110B1 publication Critical patent/EP0833110B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

  • the present invention relates to an oven with a lockable cooking space, in a blower chamber is formed by a baffle. in which an impeller is arranged and air through at least one suction opening of the baffle into the blower chamber sucks and at least one each extending substantially vertically Blow out in the two side areas of the baffle wall, the Airflow is swirled through turbulence flaps.
  • Such an oven is known from German specification P 25 57 867, wherein the blow-out opening in the two side areas of the baffle by two elongated ones vertical exhaust slots is formed.
  • the two exhaust slots are through a narrow web spaced apart and of different widths.
  • On the vertical The longitudinal edge of the wider of the two exhaust slots is the baffle around a vertical one Angled axis and protrudes as essentially over the entire height of the baffle extending turbulence flap in the air flow.
  • the fan is to achieve the air flow and thus the heat distribution in the cooking space surrounded by air baffles which flow substantially radially away from the fan Feed the air horizontally to the blow-out slots.
  • the object of the present invention is to provide an oven which is simple to use Averaged a uniform heat distribution in the cooking space.
  • a particularly favorable air flow and heat distribution is achieved in that the individual openings extend over essentially the entire height of the baffle.
  • the baffle is trough-shaped.
  • the individual openings are arranged in the opposite side tub edges, the individual openings extending over substantially the entire depth of the trough-shaped Extend baffle. This makes it possible to back wall the cooking space, which together with the baffle forms the blower chamber, essentially just to design. In terms of production technology, this can be cheaper than a trough-shaped one Formation of the rear wall of the cooking space and a correspondingly flat plate-shaped Training the baffle. To ensure the greatest possible air flow, the individual openings extend across the entire depth of the side tub edges.
  • the fan advantageously blows air out of the individual openings along a rear wall towards the side walls of the cooking space. To unwanted additional turbulence to avoid the transition from the back wall to the side wall essentially curved without edges.
  • the one flowing out of the exhaust openings Air is drawn into the depth of the back wall without additional flow losses To the cooking chamber towards a cooking chamber door.
  • the oven bears in particular the design of the oven according to claim 7 at.
  • the uneven air flow distribution that often occurs in practice due to the rotation of the impeller and the resulting different Air pressure areas in the blower chamber would result in an uneven heat distribution in the cooking space.
  • This can be done by designing the oven according to the Features of claim 7 are counteracted. Because of the different The length and thus effective area of the turbulence flaps can also be swirling or air-guiding function compensates, for example, a stronger air flow on one side become.
  • the same purpose can serve that the individual openings in each of the side areas the baffle are the same size.
  • An oven has a cooking space 1, which is divided by a rectangular oven muffle 3 is limited (Fig. 1).
  • the oven muffle 3 comprises a vertically extending rear wall 5, two vertically and perpendicularly extending side walls 7, one horizontally extending top wall 9 and one at a distance from it also horizontally extending bottom wall 11.
  • the cooking space 1 is in a manner known per se lockable by an oven door, not shown.
  • a first heater 13 forming an upper heat is arranged.
  • a bottom wall 11 is a bottom heat outside the cooking chamber 1 second radiator 15 arranged.
  • the two side walls are different Heights corresponding guide ribs 17 formed on the in different Heights of several food carriers 19 can be held simultaneously.
  • the baffle 21 On the rear wall 5 of the oven muffle 3 is a trough-shaped baffle 21 attached (Fig. 2).
  • the baffle 21 has a substantially flat square Tub floor 22, from which a side tub edge is angled on the circumferential side 23 extends. Closes at the upper peripheral edge of the side tub rim 23 there is a circumferential fastening flange running approximately parallel to the tub floor 22 25 on.
  • the baffle 21 delimits the cooking chamber 1 on the one hand and forms the other together with the rear wall 5 a blower chamber 27.
  • the fastening flange is located here 25 circumferentially essentially airtight on the rear wall 5 of the Oven muffle 3.
  • FIG. 1 An impeller 29 of a radial fan is arranged in this, arranged in a manner known per se from an outside of the oven muffle 3 Drive unit (not shown) is attached.
  • Fig. 1 interrupted the upper food support 19 and the baffle 21 and the blower 29 shown in a highly simplified manner.
  • the fan wheel rotates clockwise according to the arrow in FIG. 1. It is immediately behind that in a circular area in the tub floor 22 arranged numerous circular suction openings 31 arranged.
  • Over substantially the entire height of the side vertical tub edges 23 are numerous individual rectangular blow-out openings 33 arranged one above the other. This are separated from each other by narrow webs 35 and, if necessary, penetration of microwave radiation from the cooking space 1 into the blower chamber 27 avoid.
  • the webs 35 are on the right side of the baffle 21 in their lower Border around a horizontal, extending into the drawing plane in Fig. 2 and 5 Edge 36 of the web 35 clockwise into the interior of the blower chamber 27 as the first Turbulence flap 37 bent. They extend at an angle of approximately 70 ° down and protrude into the blow-out openings 33. Accordingly, on the opposite Side of the baffle 21 formed second turbulence flaps 39, which are in the lateral tub edge from the lower edge of the individual opening 33 or in the upper edge the webs 35 inclined obliquely clockwise around the horizontal edge extend above.
  • the first and second turbulence flaps 37, 39 are parallel to one another arranged.
  • the length of the first turbulence plugs 37 is about twice as large as that Length of the second turbulence plugs 39 (FIGS. 4, 5).
  • the fan 29 When the oven is operating, the fan 29 sucks from the cooking space 1 through the suction openings 31 of the baffle 21 air into the blower chamber 27.
  • the blower presses there 29 the air essentially radially away from itself, the impeller 27 turning clockwise rotates. Due to the direction of rotation and the arrangement of the fan 29 above the Center of the blower chamber 27, which is essentially airtight and closed at the top and bottom there is an uneven distribution of air flow and air pressure within the blower chamber 27.
  • the air flowing into the blow-out opening 33 becomes braked by the first turbulence flaps 37 and over the height of the baffle 21 suitably designed turbulent, with the air flow immediately after exiting the individual blow-out openings 33 is directed essentially horizontally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Furnace Details (AREA)

Claims (11)

  1. Four avec une chambre de cuisson fermante, dans laquelle une chicane forme une chambre ventilateur abritant une roue de ventilateur, laquelle aspire, par au moins un orifice d'aspiration aménagé dans la chicane, de l'air pour le faire entrer dans la chambre ventilateur et le chasse par au moins un orifice de sortie d'air sensiblement vertical aménagé dans chacune des deux parties latérales de la chicane, des ailettes génératrices de turbulences faisant tourbillonner l'écoulement d'air, caractérisé en ce que la sortie d'air est formée par plusieurs orifices distincts (33), disposés les uns au dessous des autres et séparés par des espaceurs (35), et munis desdites ailettes génératrices de turbulences (37, 39) qui depuis la verticale s'inclinent autour d'une horizontale et font saillie dans l'écoulemennt d'air et en ce que, en fonction du sens de rotation du dispositif soufflant, les ailettes génératrices de turbulences (37) font saillie en oblique dans l'écoulement d'air vers le bas depuis le bord supérieur de chaque orifice distinct (33) dans une partie latérale de la chicane et vers le haut depuis le bord inférieur de chaque orifice distinct dans la partie latérale opposée.
  2. Four selon la revendication 1, caractérisé en ce que au moins quelquesuns des espaceurs (35) sont pliés en leur extrémité supérieure ou inférieure pour former les ailettes génératrices de turbulences (37, 39) qui font saillie dans l'écoulement d'air.
  3. Four selon l'une des revendications 1 et 2, caractérisé en ce que les ailettes génératrices de turbulences (37, 39) font saillie à l'intérieur de la chambre ventilateur (27).
  4. Four selon l'une des revendications précédentes, caractérisé en ce que les orifices distincts (33) s'étendent sur quasi toute la hauteur de la chicane (21).
  5. Four selon l'une des revendications précédentes, caractérisé en ce que la chicane (21) est réalisée sous la forme d'une cuvette, en ce que les orifices distincts (33) sont agencés dans les côtés latéraux opposés de la cuvette (23) et en ce que lesdits orifices distincts (33) s'étendent sur quasi toute la profondeur de la chicane (21) en forme de cuvette.
  6. Four selon l'une des revendications précédentes, caractérisé en ce que le dispositif soufflant (29) chasse l'air par les orifices distincts (33) pour le faire passer le long d'une paroi arrière (5) et l'amener sur des parois latérales (7) de la chambre de cuisson et en ce que le passage de la paroi arrière à la paroi latérale se fait selon une courbe quasi exempte d'arêtes.
  7. Four selon l'une des revendications précédentes, caractérisé en ce que la circulation d'air est d'importance différente selon la position du dispositif soufflant (29) dans la chambre ventilateur (27) et/ou selon la forme de ladite chambre ventilateur, dans les deux parties latérales de la chicane (21), et en ce que la longueur des ailettes génératrices de turbulences (37) faisant saillie dans l'écoulement d'air dans la partie latérale de la chicane (21) dans laquelle la circulation d'air est plus importante est supérieure à celle des ailettes de la partie latérale opposée.
  8. Four selon l'une des revendications précédentes, caractérisé en ce que les ailettes génératrices de turbulences (37) font saillie dans l'écoulement d'air en oblique vers le bas dans une partie latérale de la chicane (21) et en oblique vers le haut dans la partie latérale opposée, selon le sens de rotation du dispositif soufflant (29).
  9. Four selon l'une des revendications précédentes, caractérisé en ce que les ailettes génératrices de turbulences (37, 39) d'une même partie latérale de la chicane (21) ont une même inclinaison et/ou une même longueur.
  10. Four selon l'une des revendications précédentes, caractérisé en ce que les espaceurs (35) d'une même partie latérale de la chicane (21) au moins sont de même hauteur.
  11. Four selon l'une des revendications précédentes, caractérisé en ce que les orifices distincts (33) d'une même partie latérale de la chicane (21) au moins sont de même grandeur.
EP97113865A 1996-09-30 1997-08-11 Four avec un dispositif soufflant Expired - Lifetime EP0833110B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19640237 1996-09-30
DE19640237A DE19640237A1 (de) 1996-09-30 1996-09-30 Backofen mit Gebläse

Publications (2)

Publication Number Publication Date
EP0833110A1 EP0833110A1 (fr) 1998-04-01
EP0833110B1 true EP0833110B1 (fr) 2002-11-13

Family

ID=7807397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113865A Expired - Lifetime EP0833110B1 (fr) 1996-09-30 1997-08-11 Four avec un dispositif soufflant

Country Status (4)

Country Link
EP (1) EP0833110B1 (fr)
DE (2) DE19640237A1 (fr)
ES (1) ES2186828T3 (fr)
PL (1) PL322292A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD941074S1 (en) 2020-07-20 2022-01-18 Sharkninja Operating Llc Food preparation device
US11229322B2 (en) 2020-04-06 2022-01-25 Sharkninja Operating Llc Dynamic flip toaster

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831087A1 (de) * 1998-07-10 2000-01-13 Bsh Bosch Siemens Hausgeraete Backofen mit Luftleitblech
SE0104374D0 (sv) * 2001-12-21 2001-12-21 Electrolux Ab Varmluftsugn
FR2847027B1 (fr) * 2002-11-13 2006-04-21 Brandt Ind Enceinte de cuisson ventilee, notamment pour four de cuisson domestique
DE10313916A1 (de) * 2003-03-27 2004-10-07 BSH Bosch und Siemens Hausgeräte GmbH Backofen
DE10313914A1 (de) 2003-03-27 2004-10-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines Backofens
DE10314571A1 (de) * 2003-03-31 2004-10-14 BSH Bosch und Siemens Hausgeräte GmbH Gargerät
KR100988570B1 (ko) * 2003-04-10 2010-10-19 삼성전자주식회사 가열조리기
DE20314818U1 (de) * 2003-09-24 2004-06-09 Rational Ag Gargerät mit Luftleitglied
DE102004047993A1 (de) * 2004-10-01 2006-04-06 BSH Bosch und Siemens Hausgeräte GmbH Backofen
US7411160B2 (en) 2005-06-01 2008-08-12 Whirlpool Corporation Airflow system for a convection oven
DE102005044625A1 (de) * 2005-09-19 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Gargerät
EP1933095A1 (fr) * 2006-12-08 2008-06-18 Electrolux Home Products Corporation N.V. Appareil domestique comprenant un ventilateur
DE102007061285A1 (de) * 2007-12-19 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Heißluft- oder Umluftofen
DE102023101470A1 (de) 2023-01-20 2024-07-25 Miwe Michael Wenz Gmbh Behandlungsgerät mit einer Trennwand, zur Behandlung von Lebensmitteln

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512655A1 (de) * 1985-04-06 1986-10-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Back- und bratofen
FR2623883B1 (fr) * 1987-11-27 1991-05-10 Seb Sa Four de cuisson electrique a ventilation
DE4224797C2 (de) * 1992-07-27 1994-09-01 Bosch Siemens Hausgeraete Backofen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11229322B2 (en) 2020-04-06 2022-01-25 Sharkninja Operating Llc Dynamic flip toaster
US11445859B2 (en) 2020-04-06 2022-09-20 Sharkninja Operating Llc Dynamic flip toaster
USD941074S1 (en) 2020-07-20 2022-01-18 Sharkninja Operating Llc Food preparation device
USD941075S1 (en) 2020-07-20 2022-01-18 Sharkninja Operating Llc Food preparation device

Also Published As

Publication number Publication date
PL322292A1 (en) 1998-04-14
EP0833110A1 (fr) 1998-04-01
ES2186828T3 (es) 2003-05-16
DE19640237A1 (de) 1998-04-02
DE59708705D1 (de) 2002-12-19

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