WO2010029088A1

WO2010029088A1 - An oven casing assembly

Info

Publication number: WO2010029088A1
Application number: PCT/EP2009/061653
Authority: WO
Inventors: Cemalettin Kalayci
Original assignee: Arcelik Anonim Sirketi
Priority date: 2008-09-12
Filing date: 2009-09-08
Publication date: 2010-03-18
Also published as: EP2329199B1; EP2329199A1; ES2617867T3; PL2329199T3; EP2329199B2

Abstract

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.

Description

AN OVEN CASING ASSEMBLY

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

[0003] 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.

[0004] 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.

[0005] Another state of the art embodiment is explained in the German Patent Document No DE19705656.

[0006] The aim of the present invention is the realization of an oven, the cooking chamber of which can be easily cleaned.

[0007] 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.

[0008] 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. [0009] 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. [0010] 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. [0011] 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. [0012] The oven realized in order to attain the aim of the present invention is illustrated in the attached figures, where: [0013] Figure 1 - is the perspective view of an oven. [0014] Figure 2 - is the front view of the cooking chamber of an embodiment of the present invention.

[0015] Figure 3 - is the exploded view of a cooking chamber. [0016] Figure 4 - is the sideways view of a cooking chamber. [0017] Figure 5 - is the view of detail A in Figure 4. [0018] Figure 6 - is the view of detail B in Figure 4. [0019] 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. [0020] Figure 8 - is the view of a cut sheet in an embodiment of the present invention. [0021] Figure 9 - is the schematic view of the rear wall and casing, formed by shaping a sheet, before being cut. [0022] Figure 10 - is the schematic view of the rear wall and casing, formed by shaping a sheet, before being cut. [0023] Figure 11 - is the schematic view of the casing, by folding the edges of which a chamber support is formed. [0024] Figure 12 - is the schematic view of the rear wall, the bottom wall and the casing. [0025] Figure 13 - is the schematic view of the rear wall, the bottom wall and the casing with a gasket mounted thereon. [0026] 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 [0027] 101. Curve [0028] 102. Base

[0029] 103. Support means

[0030] 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).

[0031] 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).

[0032] 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.

[0033] In an embodiment of 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).

[0034] In an embodiment of 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).

[0035] 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).

[0036] 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).

[0037] In an embodiment of 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).

[0038] 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).

[0039] 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).

[0040] 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.

[0041] 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).

[0042] 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).

[0043] 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). [0044] 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. It is to be understood that the present invention is not limited to the embodiments disclosed above and an expert in the technique can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

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, characterized by

- a casing (9) which is mounted onto the curves (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 curves (101), will remain outside the cooking chamber (6).

2. An oven (1) as in Claim 1 , characterized by the U-shaped curve (101) which is oblique such that its orifice portion will face the opposite direction of the opening (7) and which is formed by bending the front edges of the walls (2, 3 and 4) towards themselves.

3. An oven (1) as in Claims 1 and 2, characterized by the curve (101) which comprises a base (102) and a support means (103) that is formed by the wall (2, 3 and 4) portions bent towards themselves.

4. An oven (1) as in Claim 3, characterized by 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).

5. An oven (1) as in Claim 4, characterized by 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).

6. An oven (1) as in Claim 4 or 5, 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.

7. An oven (1) as in any one of the above Claims, characterized by at least one gasket (13) which is disposed between the casing (9) and the curve (101).

8. 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 7:

- 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),

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