AN OVEN WITH COOKING CHAMBER

Description

[0001] The present invention relates to an oven comprising a cooking chamber.

[0002] Ovens have a cooking chamber wherein the cooking process is performed. The walls of the cooking chamber are generally manufactured by shaping sheet metals. Then, these walls are joined with each other from their edges by the methods of riveting or welding. The joint points of the walls, being sharp and protruding, cause stain accumulation therein.

[0003] While cleaning the accumulated stain, the user feels uncomfortable with the joint edges that are rough.

[0004] In the oven mentioned in the state of the art Great Britain Patent Document No GB2329467, it is described that by means of the side walls and the base, formed by bending a single piece sheet metal in U-shape, the material required for joining these components is saved.

[0005] In the oven mentioned in the state of the art Great Britain Patent Document No GB2355070, the center portion of a single piece sheet metal is cut out and used as the rear wall, and the bezel, remaining after the center portion is cut out, is used as the front wall.

[0006] Another state of the art embodiment is explained in the German Patent Document No DE19705656.

[0007] Document GB2107160 describes an oven comprising a cooking chamber having a top wall, a bottom wall, side walls, and a casing. The front edges of the walls and the front edges of the casing comprise corresponding bent portions that fit to each other in an interlocking manner to form a seam inside the cooking chamber.

[0008] Documents EP254500 and EP1655544 describe cooking ovens in which the walls are provided with flanges that are joined to each other.

[0009] Postpublished document EP2098787 discloses an oven in which the front edges of a cooking chamber are bent in a U-shape, wherein a frame is attached to the outside of said bent edges.

[0010] Document JP59119118A discloses the provision of a front plate of an oven with a first bent section and a second bent section that form a first curling margin. Second curling margins are formed on a body plate and top board. The joining of the front plate with the body section is performed by curling processing.

[0011] Document US4848311 discloses an oven in which flanges of a frame are immediately attached to the outer wall of a cooking chamber.

[0012] The aim of the present invention is the realization of an oven, the cooking chamber of which can be easily cleaned.

[0013] The oven realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a cooking chamber which is formed by cutting and joining the sheets from metal material and which has bottom, top, side and rear walls, an opening at the front side, which enables the foods that will be cooked to be disposed into the cooking chamber, and a door which provides the cooking chamber inner volume to be isolated from the outer environment by closing the opening.

[0014] The oven, furthermore, comprises a curve which is formed by bending the front edges of the bottom, top and side walls, joined such that an opening will remain in the middle of them, towards the outside of the walls, and a casing which enables the walls to be fixed by being disposed onto the curve.

[0015] Meanwhile, the walls are also fixed to the rear wall from their rear edges. The casing and the walls are joined at the outside of the cooking chamber inner volume, on the curves. Thus, the oil and vapor of the cooked foods do not smear the joint points during cooking.

[0016] By cutting and bending a single piece sheet, the rear wall is formed from its center portion and the casing is formed from the portion remaining around the rear wall. Thus, almost no waste material is generated and the whole sheet is made use of.

[0017] By means of the cooking chamber of the present invention, the cost of the oven decreases and the walls of the oven can be fixed to each other without the need of additional material.

[0018] The oven realized in order to attain the aim of the present invention is illustrated in the attached figures, where:

Figure 1 - is the perspective view of an oven.

Figure 2 - is the front view of the cooking chamber of an embodiment of the present invention.

Figure 3 - is the exploded view of a cooking chamber.

Figure 4 - is the sideways view of a cooking chamber.

Figure 5 - is the view of detail A in Figure 4.

Figure 6 - is the view of detail B in Figure 4.

Figure 7 - is the view of the rear wall and casing, formed by shaping a bent sheet, before being cut, in an embodiment of the present invention.

Figure 8 - is the view of a cut sheet in an embodiment of the present invention.

Figure 9 - is the schematic view of the rear wall and casing, formed by shaping a sheet, before being cut.

Figure 10 - is the schematic view of the rear wall and casing, formed by shaping a sheet, before being cut.

Figure 11 - is the schematic view of the casing, by folding the edges of which a chamber support is formed.

Figure 12 - is the schematic view of the rear wall, the bottom wall and the casing.

Figure 13 - is the schematic view of the rear wall, the bottom wall and the casing with a gasket mounted thereon.

[0019] The elements illustrated in the figures are numbered as follows:

1. Oven

2. Bottom wall

3. Top wall

4. Side wall

5. Rear wall

6. Cooking chamber

7. Opening

8. Door

9. Casing

10. Step

11. Chamber support

12. Carrying means

13. Gasket

101. Curve

102. Base

103. Support means

[0020] An oven (1) comprises a cooking chamber (6) which has a bottom wall (2), a top wall (3), two side walls (4) and a rear wall (5) that are formed by cutting and bending the sheets (L) preferably from metal material, and which is formed by joining the walls (2, 3 and 4) and wherein foods to be cooked are disposed; an opening (7) through which the access to the cooking chamber (6) through between the front edges of the walls (2, 3 and 4) is provided, and a door (8) which provides the opening (7) to be closed and which is opened preferably by bending towards the front (Figures 1, 2 and 3).

[0021] The oven (1), furthermore, comprises

• a curve (101) which is formed by bending the front edge of the walls (2, 3 and 4) towards the outside of the cooking chamber (6), and
• a casing (9) which is mounted onto the curves (101) such that it will

encircle the front edges of the walls (2, 3 and 4), and the line (H), wherein it joins with the curves (101), will remain outside the cooking chamber (6) (Figures 4 and 6).

[0022] A door (8), which is preferably of glass and which separates the cooking chamber (6) from the outer environment by being closed onto the casing (9), is located at the portion that is visible to the user from the front side of the oven (1). In the embodiment of the present invention, the door (8) is closed onto the curve (101) of the walls (2, 3 and 4) which are curved by extending to the outside of both the casing (9) and the cooking chamber (6). The casing (9) is seated onto the curve (101) of the walls (2, 3 and 4). Thus, the joint points of the casing (9) and the walls (2, 3 and 4) remain outside the cooking chamber (6) as much as the width of the curve (101) and stain does not reach there during cooking.

[0023] In the present invention, the oven (1) comprises a U-shaped curve (101) which is oblique such that its orifice portion will face the opposite of the opening (7) and which is formed by bending the front edges of the walls (2, 3 and 4) towards themselves. The curve (101) comprises a base (102) and a support means (103) which is formed by the portions that are bent towards the walls (2, 3 and 4) (Figures 4 and 6).

[0024] In the present invention, the oven (1) comprises an oblique U-shaped curve (101) which is bent such that its orifice portion will face the opposite direction of the opening (7).

[0025] By the walls (2, 3 and 4) being curved towards the outside of the cooking chamber (6) and joining with the casing (9) on their curve (101), the surfaces reached by the user are smooth. Thus, the user is not strained while cleaning the inside of the cooking chamber (6).

[0026] In an embodiment of the present invention, the oven (1) comprises a step (10), the length of which is equal to the difference between the distance, which is between the opposite walls (2, 3 and 4) and the distance, which is between the opposite walls of the casing (9). The step (10) is closed by the curve (101).

[0027] In the present invention, the oven (1) comprises a chamber support (11) which is formed by bending the casing (9) inner edges towards the cooking chamber (6) such that they will form a horizontal surface and which is fixed by being seated onto the support means (103). The chamber support (11) and the support means (103) enables the casing (9) and the walls (2, 3 and 4), which are sheet-shaped and the frontals of the edges of which face each other vertically, to be joined with each other in the horizontal position, whereto they are brought by being bent. Furthermore, since the edges of the chamber support (11) and of the support means (103) extend towards the opposite direction of the opening (7), they enable the edges not to be visible from the outside of the cooking chamber (6) (Figure 7).

[0028] In an embodiment of the present invention, the oven (1) comprises a carrying means (12) which is formed by bending the rear wall (5) outer edges towards the cooking chamber (6) such that they will form a horizontal surface and whereon the rear edges of the walls (2, 3 and 4) are fixed when the walls (2, 3 and 4) and the rear wall (5) are joined. The edges of the rear wall (5), which is vertical to the walls (2, 3 and 4), are enabled to be joined with the carrying means (12) on the same horizontal plane they are brought to with the carrying means (12) by methods such as spot welding and riveting (Figures 4 and 5).

[0029] In an embodiment of the present invention, the oven (1) comprises a joint line (H) which forms the border whereat the chamber support (11) and the support means (103) are joined facing each other, and which remains outside the cooking chamber (6). The chamber support (11) and the support means (103) can be fixed to each other along the joint line (H) by a method such as clamping, riveting or welding. Thus, the wall (2, 3 and 4) and the casing (9) join firmly (Figure 6).

[0030] In an embodiment of the present invention, the chamber support (11) and the support means (103) are fixed to each other by spot welding. The chamber support (11) and the support means (103) are fixed to each other by being welded from the points which are determined by the producer and located on the chamber support (11) at intervals. Thus, the thermal bridges between the walls (2, 3 and 4) and the casing (9) are decreased.

[0031] In this embodiment, the oven (1), furthermore, comprises at least one gasket (13) which is seated between the curve (101) and the casing (9) such that it will prevent the joint line (H) from being visible from the outside. After the gasket (13) is mounted, the gasket (13), the walls (2, 3 and 4) and the casing (9) appear as a flat surface when viewed from the outside. The user cleans the oven (1) easily since there is no recess or protrusion at the joint points. Since the joint line (H), whereto the gasket (13) is mounted, remains outside the cooking chamber (6), the joint line (H) is not affected by the temperature increased during cooking (Figure 13).

[0032] By shaping a single sheet (L) by the deep drawing method and cutting the sheet (L) along a closed rectangular line, the rear wall (5) is formed from the portion remaining inside the line and the casing (9) is formed from the portion remaining outside the rear wall (5) (Figures 7 and 8). Thus, in order to form a rear wall (5) and a casing (9), a single sheet (L) is used instead of two different sheets (L) and thus, a large amount of waste material is prevented from being generated (Figures 9, 10, 11, 12 and 13).

[0033] The oven (1) of the present invention is produced according to the following steps:

• shaping of the bottom wall (2), top wall (3) and side walls (4) in a mould,
• curving of the front edges of the walls (2, 3 and 4) to form curves (101),
• shaping of the rear wall (5) and the casing (9) from a single sheet (L) by the deep drawing method,
• cutting of the sheet (L) along a closed rectangular line such that the portion remaining inside will form the rear wall (5) and the portion remaining outside will form the casing (9),
• bending of the edges of the casing (9) such that a step (10) will remain between the casing (9) and the rear wall (5),
• joining of the walls (2, 3 and 4) with the rear wall (5) and the casing (9).

[0034] By means of the oven (1) of the present invention, at the cooking chamber (6) front portions, whereto the user can reach, no joint protrusion is present. By means of the curves (101) and the casing (9) being joined outside the cooking chamber (6) such that their edges will face the inside of the body (G), the edges are not visible to the user. In the embodiment wherein gasket (13) is used, also the joint points are not visible at all, and dust and stain do not accumulate there.

Claims

1. An oven (1) comprising a cooking chamber (6) which has a bottom wall (2), a top wall (3), two side walls (4) and a rear wall (5) that are formed by cutting and bending the sheets (L) preferably from metal material, and which is formed by joining the walls (2, 3 and 4) with the rear wall (5) and wherein foods to be cooked are disposed; an opening (7) through which the access to the cooking chamber (6) through between the front edges of the walls (2, 3 and 4) is provided, and a door (8) which provides the opening (7) to be closed and which is opened preferably by bending towards the front, further comprising

- a U-shaped curve (101) which is formed by bending the front edge of the walls (2, 3 and 4) towards the outside of the cooking chamber (6),

- a casing (9) which is mounted onto the curve (101) such that it will encircle the front edge of the walls (2, 3 and 4), and the line (H), wherein it joins with the curve (101), will remain outside the cooking chamber (6), characterized in that,

- the U-shaped curve (101) is oblique such that its orifice portion will face the opposite direction of the opening (7)

- the U-shaped curve (101) is formed by bending the front edges of the walls (2, 3 and 4) towards themselves,

- the U-shaped curve (101) comprises a base (102) and a support means (103) that is formed by the wall (2, 3 and 4) portions bent towards themselves,

- a chamber support (11) is formed by bending the casing (9) inner edges towards the cooking chamber (6) such that they will form a horizontal surface and which is fixed by being seated onto the support means (103),

- the joint line (H) which forms the border whereat the chamber support (11) and the support means (103) are joined facing each other, and which remains outside the cooking chamber (6),

- at least one gasket (13) is disposed between the casing (9) and the curve (101).

2. An oven (1) as in Claim 1, characterized by the chamber support (11) and the support means (13) which are fixed to each other by spot welding by being welded from the points located on the chamber support (11) at intervals.

3. A production method which comprises the following steps in order to form the cooking chamber (6) of an oven (1) in any one of the Claims 1 to 2:

- shaping of the bottom wall (2), top wall (3) and side walls (4) in a mould,

- curving of the front edges of the walls (2, 3 and 4) to form curves (101),

- shaping of the rear wall (5) and the casing (9) from a single sheet (L) by the deep drawing method,

- cutting of the sheet (L) along a closed rectangular line such that the portion remaining inside will form the rear wall (5) and the portion remaining outside will form the casing (9),

- bending of the edges of the casing (9) such that a step (10) will remain between the casing (9) and the rear wall (5),

- joining of the walls (2, 3 and 4) with the rear wall (5) and casing (9).

Ansprüche

1. Ofen (1), umfassend eine Garungskammer (6) mit einer Unterseitenwand (2), einer Oberseitenwand (3), zwei Seitenwänden (4) und einer Rückseitenwand (5), die durch Schneiden und Biegen der Bleche (L) vorzugsweise aus Metallmaterial gebildet sind, und die durch Verbinden der Wände (2, 3 und 4) mit der Rückseitenwand (5) gebildet ist und in die zuzubereitende Lebensmittel gegeben werden; eine Öffnung (7), durch die der Zugriff auf die Garungskammer (6) zwischen den Vorderkanten der Wände (2, 3 und 4) hindurch bereitgestellt wird, und eine Tür (8), die das Schließen der Öffnung (7) ermöglicht und die vorzugsweise durch Biegen nach vorne geöffnet wird, ferner umfassend

- eine U-förmige Krümmung (101), die durch Biegen der Vorderkante der Wände (2, 3 und 4) zur Außenseite der Garungskammer (6) gebildet ist,

- ein Gehäuse (9), das an der Krümmung (101) angebracht ist, derart, dass es die Vorderkante der Wände (2,3 und 4) umgibt und die Linie (H), an der sich sich mit der Krümmung (101) verbindet, außerhalb der Garungskammer (6) bleibt, dadurch gekennzeichnet, dass

- die U-förmige Krümmung (101) schräg ist, derart, dass ihr Mündungsabschnitt der zur Öffnung (7) entgegengesetzten Richtung zugewandt ist,

- die U-förmige Krümmung (101) durch Biegen der Vorderkante der Wände (2, 3 und 4) zu sich selbst hin gebildet ist,

- die U-förmige Krümmung (101) eine Basis (102) und ein Stützmittel (103) umfasst, das durch die zu sich selbst hin gebogenen Abschnitte der Wände (2, 3 und 4) gebildet ist,

- ein Kammerträger (11) durch Biegen der Innenkanten des Gehäuses (9) zur Garungskammer (6) hin gebildet ist, derart, dass diese eine horizontale Fläche bilden, und der befestigt ist, indem er auf dem Stützmittel (103) sitzt,

- die Verbindungslinie (H), die die Grenze bildet, an der der Kammerträger (11) und das Stützmittel (103) einander zugewandt verbunden sind, außerhalb der Garungskammer (6) bleibt,

- wenigstens eine Dichtung (13) zwischen dem Gehäuse (9) und der Krümmung (101) angeordnet ist.

2. Ofen (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Kammerträger (11) und das Stützmittel (13) durch Punktschweißen aneinander befestigt sind, indem sie an den Punkten zusammengeschweißt sind, die in Abständen am Kammerträger (11) angeordnet sind.

3. Herstellungsverfahren, das die folgende Schritte zum Bilden der Garungskammer (6) eines Ofens (1) nach einem der Ansprüche 1 bis 2 umfasst:

- Formen der Unterseitenwand (2), Oberseitenwand (3) und der Seitenwände (4) in einer Form,

- Krümmen der Vorderkanten der Wände (2, 3 und 4), um Krümmungen (101) zu bilden,

- Formen der Rückseitenwand (5) und des Gehäuses (9) aus einem einzelnen Blech (L) mithilfe eines Tiefziehverfahrens,

- Schneiden des Blechs (L) an einer geschlossenen rechteckigen Linie, derart, dass der im Inneren verbleibende Abschnitt die Rückseitenwand (5) bildet und der außerhalb verbleibende Abschnitt das Gehäuse (9) bildet,

- Biegen der Kanten des Gehäuses (9) derart, dass eine Stufe (10) zwischen dem Gehäuse (9) und der Rückseitenwand (5) verbleibt,

- Verbinden der Wände (2, 3 und 4) mit der Rückseitenwand (5) und dem Gehäuse (9).

Revendications

1. Un four (1) comprenant une chambre de cuisson (6) qui présente une paroi de fond (2), une paroi supérieure (3), deux parois latérales (4) et une paroi arrière (5) qui sont formées par découpage et pliage des feuilles (L) préférablement en matériau métallique, et qui est formé en joignant les parois (2, 3 et 4) avec la paroi arrière (5) et dans laquelle les aliments à cuire sont placés; une ouverture (7) à travers laquelle l'accès à la chambre de cuisson (6) à travers les bords avant des parois (2, 3 et 4) est assuré, et une porte (8) qui permet la fermeture de l'ouverture (7) et qui est ouverte préférablement en se pliant vers l'avant, comprenant en outre

- une courbe en forme de U (101) qui est formée en pliant le bord avant des parois (2, 3 et 4) vers l'extérieur de la chambre de cuisson (6),

- un encadrement (9) qui est monté sur la courbe (101) de telle sorte qu'il entoure le bord avant des parois (2, 3 et 4), et que la ligne (H), où il se joint à la courbe (101), reste en dehors de la chambre de cuisson (6), caractérisé en ce que

- la courbe en forme de U (101) est oblique de telle sorte que sa partie d'orifice fait face à la direction opposée de l'ouverture (7),

- la courbe en forme de U (101) est formée en pliant les bords avant des parois (2, 3 et 4) vers eux-mêmes,

- la courbe en forme de U (101) comprend une base (102) et un moyen de support (103) qui est formé par les murs (2, 3 et 4) pliés vers eux-mêmes,

- un support de chambre (11) est formé en pliant les bords intérieurs de l'encadrement (9) vers la chambre de cuisson (6) de manière à former une surface horizontale et est fixé en étant placé sur le moyen de support (103),

- la ligne d'articulation (H) forme le bord auquel le support de chambre (11) et le moyen de support (103) sont reliés face à face, et reste en dehors de la chambre de cuisson (6),

- au moins un joint d'étanchéité (13) est disposé entre l'encadrement (9) et la courbe (101).

2. Un four (1) selon la Revendication 1, caractérisé par le support de chambre (11) et le moyen de support (13) qui sont fixés l'un à l'autre par soudage par points en étant soudés par les points sur le support de chambre (11) à intervalles.

3. Un procédé de production qui comprend les étapes suivantes afin de former la chambre de cuisson (6) d'un four (1) selon l'une quelconque des revendications de 1 à 2:

- façonner la paroi de fond (2), la paroi supérieure (3) et les parois latérales (4) dans un moule,

- courber les bords avant des parois (2, 3 et 4) à former les courbes (101),

- façonner la paroi arrière (5) et l'encadrement (9) à partir d'une seule feuille (L) par le procédé de l'emboutissage profond,

- couper la feuille (L) le long d'une ligne rectangulaire fermée de telle sorte que la partie restant à l'intérieur forme la paroi arrière (5) et la partie restant à l'extérieur forme l'encadrement (9),

- plier les bords de l'encadrement (9) de telle sorte qu'une étape (10) reste entre l'encadrement (9) et la paroi arrière (5),

- relier les parois (2, 3 et 4) à la paroi arrière (5) et à l'encadrement (9).

Drawing