WO2009027419A2

WO2009027419A2 - An oven comprising a rotatable heater

Info

Publication number: WO2009027419A2
Application number: PCT/EP2008/061192
Authority: WO
Inventors: Ugur Camli; Zihni Gurlek; Serdar Turkoz; Onder Fesligil
Original assignee: Arcelik Anonim Sirketi
Priority date: 2007-08-31
Filing date: 2008-08-27
Publication date: 2009-03-05
Also published as: WO2009027419A3; TR201001366T1

Abstract

The present invention relates to an oven (1) wherein the heater (3) is changed to different positions in the cooking chamber (2) and secured at these positions by means of the guides (5) wherein the heater (3) ends are seated and the housings (6, 106) connected thereto.

Description

AN OVEN

[0001] The present invention relates to an oven comprising a rotatable heater.

[0002] The resistant heaters used in ovens are generally mounted on the ceiling and base of the cooking chamber. Thus, the foodstuffs placed in the oven can be heated from the bottom and the top. In the state of the art, embodiments are developed wherein the positions of heaters in the oven are changed by rotating since the cooking effectiveness is increased when cooking some foodstuffs and convenience is provided in the cleaning process by changing the positions of the heaters situated on the ceiling and the base.

[0003] In the state of the art German Patent Application No DE4004130, an oven is explained having a heater that can be changed from the horizontal position to an inclined position by rotating. The ends of the heater move in channels that limit rotational movement.

[0004] In the state of the art German Patent Application No DE19522545, an oven is explained having a heater that can be changed from the horizontal position to an inclined position by rotating.

[0005] In the state of the art European patent no EP0868636, an oven is explained wherein the heater is secured in horizontal and vertical positions by recesses and protrusions.

[0006] The aim of the present invention is the realization of an oven comprising a heater that can be rotated easily and without being damaged.

[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 heater that can be rotated to be secured horizontally, vertically or angularly in the cooking chamber. The ends of the heater are housed in the groove shaped guides situated on one of the side walls of the cooking chamber. When the heater is rotated with the ends assumed as the rotational axis, the guides form a channel wherein the ends can move and limit the movement so that there aren't any distortions in the ends. Housings are provided on the guides wherein the heater ends are fitted by stopping the heater when the desired position is reached. The ends of the heater, while moving inside the guides, are directed towards the housings by the shape of the guide and are seated in the housings.

[0008] While the heater is rotated, the ends of the heater are taken out of the housing and moved along the guide, afterwards are seated in another housing connected to the same guide. Thus, the position of the heater in the cooking chamber is changed.

[0009] The heater ends are secured in the housings and the heater is not dislodged from the housings by the weight of the heater by means of the nodes formed on the guides, situated at the entrance of the housings. The node prevents the backward movement and the exit of the heater end placed in the housing by separating the housing from the guide.

[0010] In an embodiment of the present invention, two guides are used that are shaped as an "S", symmetrical with respect to each other. The said guides are formed by adding a housing each at the ends of an arc segment shaped cut-out.

[0011] In another embodiment of the present invention, a joining plate is used, fitted to the heater ends, for fixing the distance between the heater ends and thus preventing the heater ends from damage as a result of the heater ends moving away from each other during the rotation process. The joining plate is shaped as a plate. The plate shaped joining plate covers the guides thereby reducing heat loss.

[0012] In another embodiment of the present invention, terminals are fitted at the heater ends and sockets are mounted at the ends of the terminals.

[0013] In another embodiment of the present invention, the heater is secured in a more stable manner by means of a retainer situated on the inner surface of the cooking chamber.

[0014] Mounting of the heater in the cooking chamber and rotating to secure in each position by means of the guides of the present invention and the housings fastened to the guides is maintained without damaging the heater. Moreover, the user can easily rotate the heater by means of the guides and secure in a balanced manner by means of the housings.

[0015] The oven realized in order to attain the aim of the present invention is illustrated in the attached figures, where: [0016] Figure 1 - is the perspective view of an oven.

[0017] Figure 2 - is the perspective view of a cooking chamber when the heater is in the parallel position to the ceiling of the cooking chamber. [0018] Figure 3 - is the perspective view of a cooking chamber when the heater is in the parallel position to the side wall of the cooking chamber. [0019] Figure 4 - is the detailed view of the heater, the guide and the joining plate. [0020] Figure 5 - is the perspective view of the guides in an embodiment of the present invention. [0021] Figure 6 - is the schematic view of the guide and the heater ends when the heater is in the parallel position to the ceiling of the cooking chamber in an embodiment of the present invention. [0022] Figure 7 - is the schematic view of the guide and the heater ends while the heater is rotated in an embodiment of the present invention. [0023] Figure 8 - is the schematic view of the guide and the heater ends when the heater is in the parallel position to the side wall of the cooking chamber in an embodiment of the present invention. [0024] Figure 9 - is the schematic view of the guide and the heater ends when the heater is in the inclined position in another embodiment of the present invention. [0025] The elements illustrated in the figures are numbered as follows:

1. Oven

2. Cooking chamber

3. Heater

4. Joining plate

5. Guide

6. , 106, 206. Housing

7. Terminal

8. Socket

9. Retainer

10. Node

[0026] The oven (1) of the present invention comprises a cooking chamber (2) and a heater (3) disposed in the cooking chamber (2). [0027] The heater (3) is the radiant type produced by bending a tube such that more than one winding is formed. The two ends of the tube forming the heater (3) (the ends of the heater (3)) are brought side by side to be parallel to each other. The heater (3) is mounted from the ends to a wall of the cooking chamber (2), for example the rear wall, to be parallel to the ceiling of the cooking chamber (2).

[0028] The oven (1) comprises at least one guide (5) disposed on the wall of the cooking chamber (2) wherein the heater (3) ends are placed separately. The heater (3) is rotated with the ends assumed as the rotational axis and stopped at different positions in the cooking chamber (2). For example, in the first position (Figure 2) the heater (3) parallel to the base of the cooking chamber (2) is rotated to change to the second position (Figure 3) of being parallel to the side wall of the cooking chamber (2). While the heater (3) is rotated, the heater (3) ends move in the guides (5).

[0029] The guides (5) direct the movement of the heater (3) ends. The boundaries of the path followed by the heater (3) ends moving in the channel shaped guide (5) are determined by the guide (5). The guide (5) is configured as a channel with closed ends such that both ends thereof remain in the wall of the cooking chamber (2).

[0030] The oven (1) comprises more than one housing (6, 106) fastened to the guides (5) wherein the heater (3) ends are seated for securing the heater (3). On each guide (5) a separate housing (6, 106) is provided for every position the heater (3) is desired to be retained. When the heater (3) ends are seated in the housings (6, 106), the heater (3) is enabled to remain in the selected position. The housings (6, 106) partially wrap the heater (3).

[0031] The oven (1) comprises at least one node (10) that separates the housing (6, 106) from the guide (5) thereby preventing the heater (3) end seated in the housing (6, 106) from being dislodged accidentally from the housing (6, 106). The node (10) that serves as a barrier at the entrance of the housing (6, 106) prevents the heater (3) ends to dislodge from the housing (6, 106) by the weight effect of the heater (3).

[0032] The heater (3) is parallel to the ceiling of the cooking chamber (2) under usual working conditions. In this position, the heater (3) ends are inside the housings (6, 106). When the heater (3) is rotated to be parallel to the side wall of the cooking chamber (2), the heater (3) ends pass over the node (10), leaving the housings (6, 106) and move inside the guide (5). The movement ends when the heater (3) ends are seated in the other housings (6, 106).

[0033] The oven (1) furthermore comprises terminals (7) attached to the heater (3) ends for maintaining electrical connection, sockets (8) to which the terminals (7) are fitted and a joining plate (4) mounted to the heater (3) ends for keeping the distance between the ends constant and enabling them to move together (Figure 4).

[0034] The terminals (7), sockets (8) and the joining plate (4) mounted to the heater (3) ends remain outside the cooking chamber (2).

[0035] The joining plate (4) is configured as a plate only having holes thereon wherein the heater (3) ends are seated. Heat insulation of the cooking chamber (2) is maintained by covering the guides (5) since the joining plate (4) is disposed to be over the guides (5). While the heater (3) is rotated the distance between the ends does not change and the ends are prevented from separating from each other by means of the joining plate

(4).

[0036] In an embodiment of the present invention, the oven (1) comprises two guides (5) configured as arc segments. The two guides (5) are symmetrical with respect to the axis (Y) therebetween that is vertical to the base of the cooking chamber (2). Housings (6, 106) are provided on both ends of the arc segment shaped guides (5). The guides (5) together with the housings (6, 106) on their ends form an "S" shaped groove symmetrical with respect to the axis (Y) (Figures 5 and 6).

[0037] In the said embodiment, the heater (3) is disposed in the housings (6, 106) such that one of the ends is seated in the upper housing (6) and the other in the lower housing (106) (Figure 6). When the heater (3) is rotated, the end in the upper housing (6) is seated in the housing (106) situated on the lower side of the same guide (6) and the end in the lower housing (106) is seated in the housing (6) situated on the upper side of the same guide (6) (Figure 8). During the rotational movement, the distance between the ends stays constant since the path followed by the ends of the heater (3) in the guide (5) are two symmetrical arc segments (Figure 7). In this embodiment, the housings (6, 106) at the ends of the guide (5) enable the heater (3) to be secured on and to be parallel to the ceiling or the side wall of the cooking chamber (2).

[0038] In a version of the said embodiment, the oven (3) comprises housings

(206) at almost the center of the guides (5) in addition to the housings (6, 106) disposed at both ends of the guides (5) configured as arc segments (Figure 9). In this embodiment, the housings (6, 106) at the ends of the guide (5) enable the heater (3) to be disposed parallel to the ceiling or the side wall of the cooking chamber (2), the additional housings (206) enable to secure the heater (3) in the cooking chamber (2) at a 45° angle with respect to the horizontal axis. In this position, the heater (3) is used to clean the inside of the oven (1) pyrolitically.

[0039] In another embodiment of the present invention, the oven (1) comprises a retainer (9) disposed on the side wall and/or the ceiling of the cooking chamber (2) for securing the heater (3) in the cooking chamber (2). Thus, the heater (3) is held in a more balanced manner being supported by both the ends thereof in the guides (5) and the portion seated in the retainer (9) (Figure 2).

[0040] Changing the heater (3) to different positions in the cooking chamber (2) and securing in these positions is maintained by the guides (5) wherein the heater (3) ends are seated and the housings (6, 106) connected thereto. Thus, the heater (3) can be changed to different positions as necessary when cooking foodstuffs.

Claims

1. An oven (1) that comprises a cooking chamber (2) and a heater (3) disposed in the cooking chamber (2) and characterized by - at least one guide (5) disposed on the wall of the cooking chamber (2) wherein the heater (3) ends are placed separately and - more than one housing (6, 106) fastened to the guides (5) wherein the heater (3) ends are seated for securing the heater (3).

2. An oven (1) as in Claim 1 , characterized by at least one node (10) that separates the housing (6, 106) from the guide (5) thereby preventing the heater (3) end seated in the housing (6, 106) from being dislodged accidentally from the housing (6, 106).

3. An oven (1) as in Claim 1 or 2, characterized by the separate housing (6, 106) situated on each guide (5) for every position the heater (3) is desired to be stopped.

4. An oven (1) as in Claim 1 or 2, characterized by the arc segment shaped guide (5).

5. An oven (1) as in Claim 4, characterized by two guides (5) that are symmetrical with respect to the axis (Y) therebetween that is vertical to the base of the cooking chamber (2).

6. An oven (1) as in Claim 5, characterized by the housings (6, 106) situated on both ends of the arc segment shaped guides (5) and the guides (5) together with the housings (6, 106) on their ends forming an "S" shaped groove symmetrical with respect to the axis (Y).

7. An oven (1) as in any one of the above Claims, characterized by the housings (206) disposed on almost the center of the guides (5).

8. An oven (1) as in any one of the above Claims, characterized by a joining plate (4) disposed on the heater (3) ends for keeping the distance between the ends constant.

9. An oven (1) as in Claim 8, characterized by a plate shaped joining plate (4) disposed to be over the guides (5) and maintaining heat insulation of the cooking chamber (2).

10. An oven (1) as in any one of the above Claims, characterized by a retainer (9) disposed on the side wall and/or the ceiling of the cooking chamber (2) for securing the heater (3) in the cooking chamber (2).