EP2768309A1

EP2768309A1 - An oven having bread baking function

Info

Publication number: EP2768309A1
Application number: EP12773335.0A
Authority: EP
Inventors: Ayfer ELMAS; Ahmet Ihsan Yuce
Original assignee: Arcelik AS
Current assignee: Arcelik AS
Priority date: 2011-10-18
Filing date: 2012-10-18
Publication date: 2014-08-27
Also published as: WO2013057211A1

Abstract

The present invention relates to an oven (1) comprising a cooking chamber (2) wherein the cooking process is performed, a casing (3) surrounding the cooking chamber (2), an opening (4) arranged at the base of the casing (3), a receptacle (5) placed over the opening (4) into the cooking chamber (2), wherein the materials to be cooked are placed, a motor disposed outside the casing (3) and a shaft (6) rotated by the motor.

Description

AN OVEN HAVING BREAD BAKING FUNCTION

The present invention relates to an oven having bread baking function.
In the state of the art ovens having bread baking function, baking bread becomes possible by utilizing the present oven structure and features by means of an additional system. The receptacle wherein the materials to be baked are placed, is disposed into a housing, and the receptacle is provided to be rotated by means of a motor placed into the casing and a transmission mechanism connected to the motor. However, when the bread baking function is activated before the user places the receptacle into the housing or when the receptacle dislocates due to a reason occurring during the bread baking process, the component that provides the receptacle to rotate, continues rotating. Since the component having recesses and protrusions directly extends into the cooking chamber, there is a risk for the user to contact the component and to hurt himself/herself.
In the state of the art Japanese Patent Document No. JP1256726, an oven having bread baking function is described, comprising a receptacle at the bottom side of which a magnet is placed and a cooking chamber having a bottom surface detecting the magnetic field formed by the magnet. In the said patent document, when the receptacle is placed into the housing thereof, a magnetic field is generated and the motor is provided to rotate at high speed. In the case the receptacle is not placed, since no magnetic field is generated even if the oven is operated, the motor is prevented from rotating at high speed.
The aim of the present invention is the realization of an oven having bread baking function with increased security of utilization.
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 casing surrounding the cooking chamber, a receptacle fitted into the opening arranged on the base of the casing and wherein foodstuffs required for baking bread are placed, a motor, a shaft providing the receptacle to be rotated with the power received from the motor and a connection element that extends from the opening located at the base of the casing into the cooking chamber, that is disengaged from the shaft when the receptacle is not placed thereon, that engages the shaft when the receptacle is placed thereon and that transmits the rotational movement received from the shaft to the receptacle.
In an embodiment of the present invention, the oven comprises at least one resilient member, on the upper end of which the connection member is placed. Thus, the resilient member keeps the connection member, the upper end of which is placed thereon, disengaged from the shaft in the vertical direction, so that the connection member extends into the cooking chamber. When the receptacle is placed onto the connection member in the cooking chamber, the resilient member is pressed with the effect of the weight of the receptacle and the connection member is provided to engage the shaft and to rotate with the shaft. Thus, the connection member transmits the rotational member received from the shaft to the receptacle and provides the receptacle to rotate. When the receptacle is separated from the connection member, the force exerting on the resilient member is eliminated, thus, the resilient member is freed, moving upwards in the vertical direction. While moving, the resilient member moves the connection member in the same direction. Thus, the connection member is separated from the shaft. Consequently, when the user removes the receptacle without terminating the bread baking program or when the receptacle dislocates due to a malfunction occurring during the baking, the connection member is separated from the shaft continuing its rotational movement and remains stationary. Thus, there remains no rotating component in any region directly accessible by the user and accidents that may hurt the user are prevented.
In another embodiment of the present invention, the resilient member is spring-shaped.
In another embodiment of the present invention, the oven consists of a stationary sleeve that surrounds almost entirely the shaft and that is mounted to the lower end of the resilient member. The said sleeve surrounds the shaft without contacting the shaft. Thus, the shaft rotates inside the sleeve and the sleeve is not affected by the rotational movement of the shaft.
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 a cooking chamber, a casing and a receptacle.
Figure 2 – is the perspective view of a receptacle, a connection member, a resilient member and a sleeve before the receptacle is placed onto the connection member.
Figure 3 – is the perspective view of a receptacle, a connection member, a resilient member and a sleeve when the receptacle is placed onto the connection member.
The elements illustrated in the figures are numbered as follows:

Oven
Cooking chamber
Casing
Opening
Receptacle
Shaft
Connection member
Resilient member
Sleeve

The oven (1) of the present invention comprises a cooking chamber (2) wherein the cooking process is performed, a casing (3) surrounding the cooking chamber (2), an opening (4) arranged at the base of the casing (3), a receptacle (5) placed over the opening (4) into the cooking chamber (2), wherein the materials to be cooked are placed, a motor (not shown in the figures) disposed outside the casing (3) and a shaft (6) rotated by the motor (Figure 1, Figure 2 and Figure 3).
The oven (1) of the present invention comprises a connection member (7) that extends through the opening (4) arranged at the base of the casing (3) into the cooking chamber (2), that is positioned disengaged from the shaft (6) when the receptacle (5) is not placed thereon and that engages the shaft (6) when the receptacle (5) is placed thereon (Figure 2 and Figure 3).
In the oven (1) of the present invention, the connection member (7) is positioned disengaged from the shaft (6) when the receptacle (5) is not placed thereon. Thus, the connection member (7) is not directly affected by the rotational movement of the shaft (6) and remains stationary independently from the shaft (6). When the user places the receptacle (5) onto the connection member (7) for baking bread, the connection member (7) engages the shaft (6) with the effect of the weight of the receptacle (5). The connection member (7), that engages the shaft (6) when the receptacle (5) is placed thereon, transmits the rotational movement of the shaft (6) to the receptacle (5) and provides the receptacle (5) to rotate.
In an embodiment of the present invention, the oven (1) comprises at least one resilient member (8) that provides the connection member (7) to extend through the opening (4) arranged at the base of the casing (3) into the cooking chamber (2), and on the upper end of which the connection member (7) is placed so as to rotate.
In an embodiment of the present invention, the resilient member (8) keeps the connection member (7) disengaged position from the shaft (6) at a height so as to extend through the opening (4) arranged at the base of the casing (3) into the cooking chamber (2), but not to contact the shaft (6) in the vertical direction. When the user starts the bread baking function without placing the receptacle (5) onto the connection member (7), the connection member (7) is not affected by the rotational movement of the shaft (6) which is in disengaged position. Thus, the connection member (7) extending into the cooking chamber (2) remains stationary. Consequently, there is no rotating component in the cooking chamber (2) and accidents that may cause the user to hurt himself/herself are prevented.
When the user places the receptacle (5) onto the connection member (7) that extends through the opening (4) arranged at the base of the casing (3) into the cooking chamber (2), the resilient member (8) is pressed with the effect of the weight of the receptacle (5). Thus, the connection member (7) engages the shaft (6) rotating with the power received from the motor and the shaft (6) is provided to rotate the connection member (7), hence the receptacle (5). Consequently, the materials in the receptacle (5) are provided to be stirred and the bread baking function is realized.
When the user removes the receptacle (5) or the receptacle (5) dislocates due to an error that may occur during the bread baking process, the resilient member (8) is freed and moves the connection member (7) upwards in the vertical direction. Thus, the connection member (7) disengages from the rotating shaft (6). Consequently, the connection member (7) extending into the cooking chamber (2) is not affected by the rotational movement of the shaft (6) and remains stationary. Thus, there is no rotating component that may hurt the user when the receptacle (5) is not placed onto the connection member (7) into the cooking chamber (2).
In another embodiment of the present invention, the resilient member (8) is spring-shaped. Thus, ease of production is provided.
In another embodiment of the present invention, the oven (1) comprises a stationary sleeve (9) that is mounted to the lower end of the resilient member (8) and that almost entirely surrounds the shaft (6) so as to enable the shaft (6) to rotate therein. Thus, the shaft (6) rotates inside the sleeve (9) and the sleeve (9) is not affected by the rotational movement of the shaft (6).
It is to be understood that the present invention is not limited to the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims

An oven (1) comprising a cooking chamber (2) wherein the cooking process is performed, a casing (3) surrounding the cooking chamber (2), an opening (4) arranged at the base of the casing (3), a receptacle (5) placed over the opening (4) into the cooking chamber (2), wherein the materials to be cooked are placed, a motor disposed outside the casing (3) and a shaft (6) rotated by the motor, characterized by a connection member (7) that extends through the opening (4) arranged at the base of the casing (3) into the cooking chamber (2), that is positioned disengaged from the shaft (6) when the receptacle (5) is not placed thereon and that engages the shaft (6) when the receptacle (5) is placed thereon.
An oven (1) as in Claim 1, characterized by at least one resilient member (8), on the upper end of which the connection member (7) is placed.
An oven (1) as in Claim 2, characterized by the resilient member (8) in spring form.
An oven (1) as in Claim 2 or 3, characterized by a stationary sleeve (9) that is mounted to the lower end of the resilient member (8) and that almost entirely surrounds the shaft (6) so as to enable the shaft (6) to rotate therein.