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EP2370745A1 - Four comportant une plaque de recouvrement de ventilateur - Google Patents

Four comportant une plaque de recouvrement de ventilateur

Info

Publication number
EP2370745A1
EP2370745A1 EP09771360A EP09771360A EP2370745A1 EP 2370745 A1 EP2370745 A1 EP 2370745A1 EP 09771360 A EP09771360 A EP 09771360A EP 09771360 A EP09771360 A EP 09771360A EP 2370745 A1 EP2370745 A1 EP 2370745A1
Authority
EP
European Patent Office
Prior art keywords
fan
covering plate
opening
air
oven
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
EP09771360A
Other languages
German (de)
English (en)
Other versions
EP2370745B1 (fr
Inventor
Levent Akdag
Murat Kantas
Mehmet Marasli
Ertugrul Ustundag
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 EP2370745A1 publication Critical patent/EP2370745A1/fr
Application granted granted Critical
Publication of EP2370745B1 publication Critical patent/EP2370745B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 wherein the warm air blown by the fan is provided to be effectively sent to the cooking chamber.
  • At least one heater and a fan are situated.
  • the oven casing which is formed by the walls surrounding the cooking chamber wherein the baking process is performed, is divided into two compartments by means of a fan covering plate located in front of the rear wall.
  • the fan and the heater are disposed into the compartment that is between the casing rear wall and the fan covering plate.
  • the warm air, which is heated by the heater and moved by the fan is transmitted to the cooking chamber through the blow openings situated on the fan covering plate, and by means of the suction holes, the air transmitted to the cooking chamber is aspirated again to the fan compartment that is between the fan covering plate and the casing rear wall and thus, the food is provided to be baked.
  • the warm air moved by the fan is exposed to turbulence effects and edge losses between the fan covering plate and the casing rear wall.
  • the flow rate of the circulating air decreases and therefore, the baking efficiency is reduced.
  • a homogeneous air distribution inside the oven is required to be provided, and therefore, air is required to be blown with controlled direction and flow rate from the fan covering plate into the cooking chamber.
  • the aim of the present invention is the realization of an oven comprising a fan covering plate which provides the warm air blown by the fan to be guided in the desired direction onto the trays in the cooking chamber.
  • the oven comprises a fan covering plate which separates the compartment wherein the fan is situated and the cooking chamber wherein the baking process is performed by disposing the trays therein, and on the fan covering plate, more than one opening is situated which provides the air moved by the fan to be transmitted to the cooking chamber.
  • the oven of the present invention comprises guiding means which are located on the fan covering plate and which are formed by performing a deep drawing process on the fan covering plate towards the fan compartment side behind it, and which are positioned slightly before the openings on the flow path of the air, that is moved by the fan at the rear surface of the fan covering plate with respect to the direction of rotation of the fan, and which partially surround the openings.
  • the guiding means consist of a diverter section which inclines towards the PatXML 3/10 BB1821-7.828
  • opening with an acute angle in comparison to the plane of the fan covering plate and with a slight incline, and which moves the air flow away from the plane of the fan covering plate right before it reaches the opening; and a support member section which extends almost vertically to the plane of the fan covering plate near the opening.
  • the guiding means Being before the opening in the flow direction, the guiding means is positioned near the opening such that a certain distance such as a few millimeters will remain between the support member section and the opening edge. This distance between the guiding means and the opening edge is calculated depending on the inclination angle and the height of the guiding means in order that the air flow is blown to the cooking chamber by getting it as close to the axis of the opening as possible.
  • horizontal guiding means which extend between the opening and the upper or lower wall of the fan covering plate, and vertical guiding means which extend between the side edge of the opening and the side wall of the fan covering plane are located on the fan covering plate of the oven.
  • one vertical guiding means is joined with each horizontal guiding means from their one end each, and they form an L-shaped embossment which extends from the fan covering plate towards the fan compartment side.
  • guiding means are formed on the fan covering plate by a single deep drawing process, which is performed such that it will form an L-shape.
  • the guiding means decreases the air flows in undesired directions which are blown from the fan compartment into the cooking chamber through the openings, and thus, by providing a homogeneous baking, burnt or unbaked areas are prevented from occurring.
  • Figure 1 - is the schematic view illustrating the air output through the openings on the fan covering plate by the clockwise rotation of the fan in an oven in the prior art.
  • Figure 2 - is the schematic view illustrating the air output through the openings on the fan covering plate by the counterclockwise rotation of the fan in an oven in the prior art.
  • Figure 3 - is the schematic view of the oven of the present invention.
  • Figure 4 - is the front perspective view of the oven casing and the fan covering plate at its rear side.
  • Figure 5 - is the detailed view of the guiding means located on the fan covering plate.
  • Figure 6 - is the schematic view of cross-section C - C in Figure 4.
  • the oven (1) comprises a casing (2), a cooking chamber (3) which is located inside this casing (2) and wherein the trays the foods to be baked are placed in, are disposed, a heater (not illustrated in the figures) which provides the air in the cooking chamber (3) to be heated, a fan (4) which is located at the side the rear wall of the casing (2) is situated in, and which moves the heated air, a fan compartment (5) wherein the heater and the fan (4) are disposed, a fan covering plate (6) which separates the cooking chamber (3) and the fan compartment (5) inside the casing (2), and more than one opening (7) which is located on the fan covering plate (6) and which provides the air (F) moved by the fan (4) to be transmitted to the cooking chamber (3).
  • the suction holes (D) the air (F) transmitted to the cooking chamber (3) is aspirated again to the fan compartment (5) that is between the fan covering plate (6) and the casing PatXML 5/10 BB1821-7.828
  • the oven (1) of the present invention comprises more than one guiding means (8, 108)
  • the guiding means (8, 108) has
  • a support member (10) which extends almost vertically to the plane of the fan covering plate (6) near the opening (7) and which supports the diverter (9), and which has a height (H) that is determined by the length (L) and the angle (A) of the diverter (9) in the direction of the fan covering plate (6) ( Figure 6).
  • the air (F) Since the guiding means (8, 108) is positioned before the opening (7) with respect to the flow direction of the air (F), the air (F), which is moved by the fan (4), performs a flow in parallel to the plane of the fan covering plate (6) by contacting the rear surface of the fan covering plate (6) and in the flow direction, encounters the diverter (9) before reaching the opening (7). Before reaching the opening (7), the air (F) is moved away from the plane of the fan covering plate (6) gradually by following the shape of the diverter (9). Thus, no blocks remain in front of the air (F) flow which moves forward by following the diverter (9) and which comes right across the opening (7) by passing over the diverter (9).
  • the diverter (9) inclines towards the opening (7 with a small incline, for example with an inclination angle (A) of less than 45 degrees to the fan covering plate (6), it provides the continuity of the air (F) flow and does not form a barrier whereto the air (F) flow will directly hit, and the turbulence losses, which can occur by the effect of a direct impact in the flow direction of the air (F), are minimized.
  • the guiding means (8, 108) is positioned near the opening (7) such that a certain distance (B) will remain between the support member (10) and the opening (7) edge ( Figure 6).
  • the distance (B) between the support member (10) and the opening (7) edge depends on the inclination angle (A) of the diverter (9) and on the height (H) of the support member (10) and is calculated such that it will get the air (F) flow, which is directed to the opening (7) by leaving the surface of the diverter (9), as close to the axis (X) of the opening (7) as possible.
  • the oven (1) comprises
  • the horizontal guiding means (8) and the vertical guiding means (108) are joined from their one end each, and they form an L-shaped embossment which extends from the fan covering plate (6) towards the fan compartment (5) side ( Figures 4, 5).
  • both the horizontal guiding means (8) and the vertical guiding means (108) are simultaneously formed on the fan covering plate (6) by a single deep drawing process, which is performed such that it will form an L-shape.
  • the L-shaped guiding means (8, 108) guide the air (F), which hits the upper, lower and side walls of the fan covering plate (6) and turns back, particularly around the openings (7), which are situated at the corner portions of the fan covering plate (6), and thus, the guiding means (8, 108) provide the air (F) to be blown through the opening (7) in the desired direction (X) ( Figure 5).
  • the horizontal guiding means (8) which are situated at the right side of the fan covering plate (6) when viewed from the front, extend towards the upper side of the openings (7), and the vertical guiding means (108) extend from the right edge of the openings (7) downwards.
  • the horizontal guiding means (8) which are situated at the left side of the fan covering plate (6), extend towards the lower side of the openings (7), and the vertical guiding means (108) extend from the left edge of the openings (7) upwards.

Landscapes

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

Abstract

La présente invention concerne un four (1) qui comporte une enceinte (2), une chambre de cuisson (3) qui est située à l'intérieur de cette enceinte (2) et dans laquelle sont disposés les plateaux sur lesquels sont placés les aliments à cuire, un élément chauffant qui délivre l'air dans la chambre de cuisson (3) à chauffer, un ventilateur (4) qui est situé sur le côté où est implantée la paroi arrière de l'enceinte (2) et qui fait circuler l'air chauffé, un compartiment ventilateur (5) dans lequel sont disposés l'élément chauffant et le ventilateur (4), une plaque de recouvrement de ventilateur (6) qui sépare la chambre de cuisson (3) et le compartiment ventilateur (5) à l'intérieur de l'enceinte (2), et plus d'un orifice (7) qui est situé sur la plaque de recouvrement de ventilateur (6) et qui délivre l'air (F) déplacé par le ventilateur (4) à transmettre vers la chambre de cuisson (3). Une cuisson homogène est assurée dans le four (1) par l'air (F) transmis vers la chambre de cuisson (3) à travers les orifices (7) dans la direction souhaitée.
EP09771360.6A 2008-12-30 2009-12-11 Four comportant une plaque de recouvrement de ventilateur Not-in-force EP2370745B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200810042 2008-12-30
PCT/EP2009/066888 WO2010076149A1 (fr) 2008-12-30 2009-12-11 Four comportant une plaque de recouvrement de ventilateur

Publications (2)

Publication Number Publication Date
EP2370745A1 true EP2370745A1 (fr) 2011-10-05
EP2370745B1 EP2370745B1 (fr) 2016-09-07

Family

ID=42078908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09771360.6A Not-in-force EP2370745B1 (fr) 2008-12-30 2009-12-11 Four comportant une plaque de recouvrement de ventilateur

Country Status (2)

Country Link
EP (1) EP2370745B1 (fr)
WO (1) WO2010076149A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2638328B1 (fr) 2010-11-11 2017-04-05 Arçelik Anonim Sirketi Four et procédé d'utilisation d'un four dans lequel le temps de cuisson est reduit
ITTO20131034A1 (it) * 2013-12-17 2015-06-18 Indesit Co Spa Forno ventilato a riscaldamento diretto

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200908301T1 (tr) * 2007-06-08 2010-03-22 Arçeli̇k Anoni̇m Şi̇rketi̇ Bir fırın
ATE550608T1 (de) * 2008-06-26 2012-04-15 V Zug Ag Heissluft-backofen mit umlenkblechen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010076149A1 *

Also Published As

Publication number Publication date
WO2010076149A1 (fr) 2010-07-08
EP2370745B1 (fr) 2016-09-07

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