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EP2126475B1 - Gargerät - Google Patents

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Publication number
EP2126475B1
EP2126475B1 EP07857664.2A EP07857664A EP2126475B1 EP 2126475 B1 EP2126475 B1 EP 2126475B1 EP 07857664 A EP07857664 A EP 07857664A EP 2126475 B1 EP2126475 B1 EP 2126475B1
Authority
EP
European Patent Office
Prior art keywords
fan
air
separator
cooking appliance
rear wall
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.)
Not-in-force
Application number
EP07857664.2A
Other languages
English (en)
French (fr)
Other versions
EP2126475A1 (de
Inventor
Davut Ayhan Serabatir
Erol Karaer
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2126475A1 publication Critical patent/EP2126475A1/de
Application granted granted Critical
Publication of EP2126475B1 publication Critical patent/EP2126475B1/de
Not-in-force 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
    • F24C15/32—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

Definitions

  • the present invention relates to a cooking appliance that enables the cooking process to be performed effectively.
  • At least one heater and a fan are provided in cooking appliances wherein the cooking process is performed by way of convection.
  • the cooking appliance framework is divided into two partitions by a separator.
  • the heater and the fan are disposed in the compartment between the rear wall of the framework and the separator, and a cooking chamber is formed in the other compartment wherein the food to be cooked is placed.
  • the air heated by the heater is activated by the fan and delivered into the cooking chamber through the holes arranged on the separator and food is cooked by means of heat transfer interaction of the air with the food to be cooked.
  • blowing holes are arranged that deliver the air activated by the fan into the cooking chamber and suction holes that re-aspirate the air delivered to the cooking chamber into the volume between the separator and the rear wall of the framework.
  • the hot air activated by the fan circulates uncontrollably between the separator and the rear wall until delivering into the cooking chamber, it is subjected to turbulence effects and corner losses. As a result, the flow rate of the circulating air decreases, hence the efficiency of the cooking process is reduced.
  • flow related noise is created since the flow is not homogeneous.
  • implementations are developed such as positioning the blowing and suction holes so that air flow is directed, disposing guide plates between the separator and the rear wall or forming the separator such that flow is directed.
  • This cooking device comprises a separator having suction holes at the center and asymmetrically arranged blowing holes at the sides of these suction holes.
  • German Patent No DE19831087 and European Patent No EP1209421 mention is made about directing of air by shaping the separator.
  • French Patent Application FR 2 871 556 A discloses an oven with a flat rear wall at the outside of which a heater and a fan are located.
  • Japanese Patent Document JP 58 160744 A discloses an oven in which a heater and a fan are located on the top wall of the cooking chamber.
  • the aim of the present invention is the realization of a cooking appliance wherein hot air is directed effectively.
  • the rear wall of the framework is shaped to direct the flow of air activated by the fan until received into the cooking chamber.
  • the shaping is maintained by drawn in regions on the rear wall to create a path for the air to flow more freely which is made by using the deep drawing process.
  • a fan housing on the side facing inside the cooking appliance wherein the fan is seated and channels are formed that extend sidewards from this housing that direct the air activated by the fan for delivering into the cooking chamber.
  • the channels are preferably positioned at regular intervals around the fan. Thus the air is distributed to the entirety of the cooking chamber.
  • the separator comprises more than one suction hole for aspirating the air from the cooking chamber and more than one blowing hole for blowing the air activated by the fan into the cooking chamber.
  • At least one blowing hole is arranged on the separator corresponding to each channel disposed on the rear wall.
  • the channels get narrower from the fan towards the blowing holes.
  • the air activated by the fan flows to the blowing holes by gradually gaining speed.
  • the separator is configured as a flat plate.
  • the channels formed on the rear wall are used for directing the air, that is, a deflecting surface is not formed on the separator.
  • the separator being in direct contact with the cooking chamber and thus the cooking appliance can be used for a longer time without the need for cleaning and is cleaned easily when spoiled since an unshaped flat plate will not get dirty easily.
  • the separator is configured to match the shape of the rear wall for providing more effective directing.
  • problems such as decrease in efficiency due to turbulence and corner losses and noise are prevented.
  • flaps are disposed inside the channels for controlling the flow of air inside the channels.
  • air can be blown by flowing only from the selected channels.
  • a heater is disposed in each channel.
  • the cooking appliance (1) comprises a framework (2), a cooking chamber (4) disposed inside this framework (2) wherein food to be cooked is placed, at least one fan (7) for activating the air, and at least one heater (6) disposed inside the framework (2) for heating the air and a separator (5) that separates the cooking chamber (4) from the volume containing the fan (7) and the heater (6) ( Figure 1 ).
  • the framework (2) comprises a rear wall (3) that is shaped for directing the flow of the activated air ( Figure 3 ).
  • the rear wall (3) is shaped by deep drawing process.
  • the rear wall (3) comprises a circular fan housing (12) at the center thereof that is formed by deep drawing process.
  • the fan (7) is disposed inside this fan housing (12).
  • the rear wall (3) furthermore comprises channels (10), again formed by deep drawing process, that extend outwards from the fan housing (12) matching the rotation direction of the fan (7) and direct the air from the fan (7) towards the cooking chamber (4). These channels (10) serve as flow routes defining the path wherein the air activated by the fan (7) flows.
  • the channels (10) are preferably positioned at regular intervals around the fan (7). Thus the air is distributed homogeneously into the cooking chamber (4).
  • the cooking appliance (1) furthermore comprises more than one suction hole (8) disposed on the separator (5) for aspirating the air from the cooking chamber (4) and more than one blowing hole (9) again arranged on the separator (5) for blowing the air activated by the fan (7) into the cooking chamber (4).
  • the blowing holes (9) are arranged such that at least one blowing hole (9) corresponds to each channel (10) situated on the rear wall (3) ( Figure 2 ).
  • the suction holes (8) are preferably disposed in the portion of the area on the separator (5) that is swept by the fan (7).
  • the suction holes (8) are formed in various numbers and shapes and in various combinations on the separator (5) ( Figure 2 ).
  • the fan (7) activates the air heated by the heater (6).
  • the air activated by the fan (7) flows along the channels (10) disposed on the rear wall (3) and is directed towards the blowing holes (9) and is blown from the blowing holes (9) into the cooking chamber (4).
  • the thermal energy contained therein is left on the cold surfaces in the cooking chamber (4) and passes through the suction holes (8) due to the suction effect created by the fan (7) and is delivered into the region of the fan (7) to be blown again.
  • the channels (7) formed on the rear wall (3) are configured to get narrower from the fan (7) towards the blowing holes (9). Thus the air moves towards the blowing holes (9) by gaining speed ( Figure 3 ).
  • directing of air is maintained only by means of the channels (10) formed on the rear wall (3).
  • a shaping or forming an additional guiding surface on the separator (5) in direct contact with the cooking chamber (4) that will speed up spoiling and make cleaning harder is not required. Accordingly, the cooking appliance (1) can be used for a longer time without the need for cleaning and can be cleaned easily when spoiled.
  • the separator (5) is configured to match the shape of the framework (2) for assisting in directing of air.
  • the problems such as decrease in efficiency due to turbulence and corner losses and noise are prevented ( Figure 5 ).
  • the cooking appliance (1) comprises flaps (11) disposed at the inlet of the channels (10) for controlling the flow of air activated by the fan (7) to the channels (10).
  • the air can be blown by flowing in only the selected channels (10), that is; the upper or lower part of the cooking chamber (4) can be heated more as preferred ( Figure 4 ).
  • a heater (6) is disposed in each channel (10).
  • the air can be heated before reaching the blowing holes (9), that is just before being blown into the cooking chamber (4), providing a more efficient cooking process ( Figure 4 ).
  • the cooking chamber (4) can be heated efficiently.
  • the time and energy consumed in the cooking process is minimized.

Landscapes

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

Claims (8)

  1. Kochwerkzeug (1) umfassend
    - einen Rahmen (2)
    - einen Kochkammer (4) in diesem Rahmen (2), in den die Lebensmittel, die gekocht werden, eingelegt werden,
    - mindestens ein Gebläse (7) zum Aktivieren der Luft,
    - mindestens ein Heizgerät (6) in dem Rahmen (2) zum Beheizen der Luft,
    - eine Trennwand (5), die den Kochkammer (4) vom Raum, der mindestens ein Gebläse (7) und mindestens ein Heizgerät (6) beinhaltet, trennt,
    wobei hier
    - der Rahmen (2) eine hintere Wand (3) aufweist, die für das Ausrichten des aktivierten Luftstrom gestaltet ist,
    - die Trennwand (5) mehr als eine Ansaugöffnung (8) zum Ansaugen der Luft aus dem Kochkammer (4) und mehr als eine Blasgöffnung (9) zum Blasen der Luft mittels mindestens eines Gebläses (7) in den Kochkammer (4) umfasst,
    - die hintere Wand (3) Kanäle (10) umfasst, die die Luft aus mindestens einem Gebläse (7) in die Blasgöffnungen (9) liefern,
    dadurch gekennzeichnet dass die Kanäle (10) von dem genannten Gebläse (7) ausgehend in Richtung zu den Blasgöffnungen (9) verjüngen.
  2. Kochwerkzeug (1) nach Anspruch 1 gekennzeichnet durch die hintere Wand (3), die durch Tiefziehen gefertig ist.
  3. Kochwerkzeug (1) nach Anspruch 1 oder 2 gekennzeichnet durch die hintere Wand (3), die ein kreisförmiges Lüftergehäuse (12) umfasst, in welchen einen Lüfter (7) eingesetzt ist und ausserdem darin sich Kanäle (10) befinden, die aus dem Lüftergehäuse (12) ausgehend mindestens mit der Drehrichtung des Lüfters (7) anpassend nach aussen erstrecken und die Luft mindestens aus dem Lüfter (7) in Richtung zum Kochkammer (4) führen
  4. Kochwerkzeug (1) nach einem der vorhergehenden Ansprüche gekennzeichnet durch die hintere Wand (3), die Kanäle (10) umfasst, die um mindestens einen Lüfter (7) in regelmäßigen Abständen positioniert sind.
  5. Kochwerkzeug (1) nach einem der vorhergehenden Ansprüche gekennzeichnet durch eine Trennwand (5) , die mindestens eine Blasöffnung (9) umfasst, die mit jedem Kanal (10) ausgerichtet ist
  6. Kochwerkzeug (1) nach einem der vorhergehenden Ansprüche gekennzeichnet durch eine Trennwand (5),die konfiguriert ist, um die Geometrie des Rahmens (2) anzupassen und so das Orientieren der Luft unterstützen zu können.
  7. Kochwerkzeug (1) nach einem der vorhergehenden Ansprüche gekennzeichnet durch Kanäle (10), die Flügel (11) umfassen, um den Luftstrom steuern zu können.
  8. Kochwerkzeug (1) nach einem der vorhergehenden Ansprüche gekennzeichnet durch Einsetzen mindestens eines genannten Heizgeräts (6) in jeden Kanal (10).
EP07857664.2A 2006-12-29 2007-12-17 Gargerät Not-in-force EP2126475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200607682 2006-12-29
PCT/EP2007/064031 WO2008080808A1 (en) 2006-12-29 2007-12-17 A cooking appliance

Publications (2)

Publication Number Publication Date
EP2126475A1 EP2126475A1 (de) 2009-12-02
EP2126475B1 true EP2126475B1 (de) 2017-07-12

Family

ID=39262559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07857664.2A Not-in-force EP2126475B1 (de) 2006-12-29 2007-12-17 Gargerät

Country Status (2)

Country Link
EP (1) EP2126475B1 (de)
WO (1) WO2008080808A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008362036B2 (en) * 2008-09-23 2014-11-27 Versuni Holding B.V. Apparatus for preparing food and air guide member therefor
DE102015226575C5 (de) 2015-12-22 2024-05-29 Nicotra Gebhardt GmbH Ventilatoreinrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050139202A1 (en) * 2001-12-21 2005-06-30 Mats Herbert Oven with forced air circulation
DE102004047993A1 (de) * 2004-10-01 2006-04-06 BSH Bosch und Siemens Hausgeräte GmbH Backofen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160744A (ja) * 1982-03-17 1983-09-24 Matsushita Electric Ind Co Ltd 熱風循環式オ−ブン
DE3306972C2 (de) * 1983-02-28 1987-01-22 Buderus Ag, 6330 Wetzlar Gerät zur Wärmebehandlung von Lebensmitteln und Speisen
US5468935A (en) * 1994-12-10 1995-11-21 Wang; Ching-Hsiang L-electric conventional roaster oven with whirlpool air circulation
ES2403152T3 (es) * 2003-12-30 2013-05-14 Arçelik Anonim Sirketi Horno
FR2871556B1 (fr) * 2004-06-14 2006-07-28 Seb Sa Dispositif de chauffage d'un four a circulation d'air

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050139202A1 (en) * 2001-12-21 2005-06-30 Mats Herbert Oven with forced air circulation
DE102004047993A1 (de) * 2004-10-01 2006-04-06 BSH Bosch und Siemens Hausgeräte GmbH Backofen

Also Published As

Publication number Publication date
WO2008080808A1 (en) 2008-07-10
EP2126475A1 (de) 2009-12-02

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