EP2090833A1

EP2090833A1 - An oven with a cooking oven chamber and an oven door system

Info

Publication number: EP2090833A1
Application number: EP08002842A
Authority: EP
Inventors: Behnam Mirshekari; Bernd Heisswolf; Dietmar Hildner; Klaus Wälzlein; Harald Pörner
Original assignee: Electrolux Home Products Corp NV
Current assignee: Electrolux Home Products Corp NV
Priority date: 2008-02-15
Filing date: 2008-02-15
Publication date: 2009-08-19
Anticipated expiration: 2028-02-15
Also published as: EP2090833B1

Abstract

The present invention relates to an oven with a cooking oven chamber (12) and an oven door system (14). The oven door system (14) comprises a vertical door portion (16) and a horizontal transport portion (18). The horizontal transport portion (18) is provided for supporting the vertical door portion (16). The horizontal transport portion (18) is movable in a horizontal direction between a closed position and an opened position. At least one holding device (24) for at least one food stuff rack is arranged at the vertical door portion. The vertical door portion (16) is provided for covering an opening of the cooking oven chamber (12) in the closed position and is arranged pivoting around a vertical swivel axis (20) on the horizontal transport portion (18). The swivel axis (20) penetrates the vertical door portion (16) and a front end part (28) of the horizontal transport portion (18).

Description

The present invention relates to an oven with a cooking oven chamber and an oven door system.
EP 0 794 389 B1 discloses an oven with a baking chamber, which is closable by an oven door. The oven door is guided in the manner of a drawer by at least one pull-out. At the inner side of a vertically extending door panel there are fastened holding elements for suspending cooking stock carriers. The oven door or the door panel is withdrawable in a horizontal direction from a closed setting into a stop setting. The pull-out carries a pivot device. The door panel is pivotable with respect to a vertical axis.
This oven allows for the user an easy access to the food stuff. However, the above oven with the pivotable door panel is very complex.
It is an object of the present invention to provide an oven of the above type with a reduced complexity.
This object is achieved by the oven according to claim 1.
According to the present invention an oven with a cooking oven chamber and an oven door system is provided, wherein:

the oven door comprises a vertical door portion and a horizontal transport portion,
the horizontal transport portion is provided for supporting and transporting the vertical door portion,
the horizontal transport portion is moveable in a horizontal direction between a closed position and an opened position,
the vertical door portion is provided for covering or closing an opening of the cooking oven chamber in the closed position,
the vertical door portion is arranged pivoting or pivotable about a vertical pivoting or swivel axis with respect to the horizontal transport portion,
the pivoting axis penetrates or runs or passes through the vertical door portion and preferably through a front part of the horizontal transport portion and/or
a pivoting bearing for the pivoting movement of the vertical door portion with respect to the horizontal transport portion is arranged in or at a front part of the horizontal transport portion.

A main idea of the invention is that the (virtual or geometric) pivoting or swivel axis penetrates or runs through the vertical door portion, so that only the vertical door element or portion without any further parts is pivoting above or with respect to the horizontal transport portion which reduces the moment of inertia compared to the prior art where a vertical door rotates about an axis spaced apart from the door. In other words, the vertical pivoting axis extends within the vertical door portion and can, therefore, be and preferably is an eigen axis or main axis of inertia so that unbalances in rotation are reduced or eliminated compared to the prior art.
Another alternative or combined main idea of the invention is that the pivoting axis passes through or penetrates the front part of the horizontal transport portion or that a pivoting bearing for the pivoting movement of the vertical door portion with respect to the horizontal transport portion is arranged in or at a front part of the horizontal transport portion. This results in a maximum degree of rotational freedom for the door portion and an increased accessibility of cooking good carriers or the cooking chamber.
In general, at least one holding or supporting device for at least one food stuff rack or cooking good carrier such as baking trays, grilling grids etc. is arranged at the vertical door portion, so that these racks or carriers are extracted or transported together with the door and are easily accessible in the opened position of the horizontal transport portion and thus the vertical door portion.
In a preferred embodiment the vertical door portion is pivoting only in the opened position. This guarantees stable state of the oven door between the opened position and closed position.
Preferably, the horizontal transport portion is locked or fixed with respect to the oven chassis in the opened position. This prevents that the vertical door portion of the oven door can be rotated or pivoted in the opened position and will not move at the same time in the transport direction. Thus, preferably the vertical door portion of the oven door is either pivoting or translationally moveable or displaceable alternatively.
In particular, the vertical door portion may comprise a U-shaped frame. This allows a simple and stable construction of the vertical door portion. For example, the U-shaped frame is made of metal, preferably of stainless steel or brass.
In the preferred embodiment an upper side of the U-shaped frame is open or blades of the U-shape extend upwardly.
The vertical door portion may comprise a door panel arranged at or within the U-shaped frame, wherein the blades may be inserted into the door panel. Thus, the door panel may be made of a low weight material, for example of plastics.
Further, a pintle or pivot and a bearing block may constitute the pivoting bearing.
The pintle or pivot is preferably arranged at the bottom side of the vertical door portion or of the U-shaped frame. The pintle or pivot is a simple and stable construction element for the pivoting vertical door portion. For example, the pintle is made of metal, preferably of stainless steel or brass. In particular, the pintle is connected to the U-shaped frame by welding, bolts or gluing. This contributes also to a stable construction.
The bearing block is arranged on or within the horizontal transport portion, in particular in the front part of the horizontal transport portion.
The pintle and the bearing block may form a rotary union or pivoting connection between the vertical door portion and the horizontal transport portion. This reduces the complexity of the whole construction.
Preferably, the pintle is arranged in the centre of the bottom side of the U-shaped frame. Likewise, preferably, the bearing block is arranged in the centre of the front end part of the horizontal transport portion. This symmetric construction reduces the load for the pintle, the bearing block and other elements.
In a preferred embodiment, at least one holding or supporting device for holding cooking good carriers or food stuff racks is arranged at the vertical door portion, in general at an inner side of the vertical door portion. Holding devices may be arranged horizontally spaced apart for the same cooking good carrier and further holding devices also vertically spaced apart for different cooking good carriers at different levels. In a special embodiment holding devices may be arranged at both or opposite sides. This allows the cooking of some food stuff on the inner side and the preparing of other food stuff on the outer side at the same time. In particular, this is advantageous for ovens with professional applications.
The novel and inventive features believed to be the characteristic of the present invention are set forth in the appended claims.
The invention will be described in further detail with reference to the drawing, in which

FIG. 1: illustrates a perspective view of an oven according to a preferred embodiment of the present invention,
FIG. 2: illustrates a perspective view of the oven with an open cooking oven chamber according to the preferred embodiment of the present invention,
FIG. 3: illustrates a perspective view of the oven with a pivoted vertical door portion of an oven door according to the preferred embodiment of the present invention,
FIG. 4: illustrates a perspective view of the oven of FIG. 3 from an opposite side according to the preferred of the present invention,
FIG. 5: illustrates a perspective view of a horizontal transport portion of the oven door and a U-shaped frame according to the preferred embodiment of the present invention, and
FIG. 6: illustrates a perspective view of the horizontal transport portion of the oven door and the U-shaped frame in a pivoted state according to the preferred embodiment of the present invention.

FIG. 1 illustrates a perspective view of an oven according to a preferred embodiment of the invention. The oven includes a chassis 10 with a cooking oven chamber 12 inside said chassis 10. Further, the oven includes an oven door 14 comprising a vertical door portion 16 and a horizontal transport portion 18.
The horizontal transport portion 18 of the oven door 14 is moveable in a horizontal translation or transport direction T between an opened position and a closed position. FIG. 1 shows the closed position. In said closed position the horizontal transport portion 18 is arranged within the chassis 10 of the oven. In said closed position the vertical door portion 16 of the oven door system 14 covers an opening of the cooking oven chamber 12.
FIG. 2 illustrates a perspective view of the oven according to the preferred embodiment of the invention in the opened position. In said opened position the bigger part of the horizontal transport portion 18 is out of the chassis 10. The vertical position 16 is supported by the horizontal transport portion 18.
The oven door system 14 is moveable in the chassis 10 like a drawer. The chassis 10 includes a cavity arranged under the cooking oven chamber 12. The horizontal transport portion 18 is moveable into said cavity. In the closed position the horizontal transport portion 18 is substantially inside the cavity as shown in FIG. 1. The vertical position 16 is arranged pivoting around a vertical swivel axis 20 on the horizontal transport portion 18. In FIG. 1 and FIG. 2 the vertical door portion 16 is in a basic position in relation to the horizontal transport portion 18.
FIG. 3 illustrates a perspective view of the oven according to the preferred embodiment of the invention in the opened position of the horizontal transport portion 18. Additionally, the vertical door portion 16 is in a pivoted position. In FIG. 3 the vertical door portion 16 is pivoted about 100° from the basic position shown in FIG. 2. The vertical door portion 16 is pivoting an arbitrary angle about the swivel axis 20. Preferably, the vertical door portion 16 is pivotable between 90° and 180° from the basic position.
On its inner side 22 the vertical door portion 16 comprises a holding device 24. The holding device 24 is provided to attach food stuff racks like baking sheets, baking trays, broiler and/or broilers. This allows an easy access to the baking sheets, baking trays, broiler and/or broilers, respectively, for the user.
FIG. 4 illustrates a further perspective view of the oven according to the preferred embodiment of the present invention. The vertical door portion 16 and the horizontal transport portion 18 are in the same position as in FIG. 3. In FIG. 4 the oven is shown from an opposite side.
FIG. 5 illustrates a perspective view of the horizontal transport portion 18 and a U-shaped frame 26 according to the preferred embodiment of the present invention. The U-shaped frame 26 is a part of the vertical door portion 16. In this example the U-shaped frame 26 is made of metal, preferably stainless steel or brass.
FIG. 6 illustrates a perspective view of the horizontal transport portion 18 and the U-shaped frame 26 in a turned state according to the preferred embodiment of the invention. FIG. 5 demonstrates how the U-shaped frame 26 is pivoting around the vertical axis 20.
In a front end part 28 of the horizontal transport portion 18 there is a bearing block. In this example the bearing block is arranged in the centre of said front end part 28. The bearing block is made of metal, preferably brass or stain-less steel.
At the bottom side of the U-shaped frame 26 there is a pintle, which is not shown in FIG. 6. Said pintle extends down from the bottom side of the U-shaped frame 26. The pintle is connected to the U-shaped frame 26 by welding, bolts or gluing. The pintle may be also be made of metal, preferably brass or stain-less steel.
The pintle is inserted in the bearing block. The pintle and the bearing block may be secured by at least one screw. The pintle and the bearing block form a rotary union between the vertical door portion 16 and the horizontal transport portion 18.
The U-shaped frame 26 is provided to hold a door panel. The door panel is inserted between the blades of the U-shaped frame 26. In the preferred embodiment the door panel is made of plastics. A window in the door panel is made of glass or transparent plastics. Alternatively, the door panel is arranged at the blades of the U-shaped frame 26.
There are different methods to fix the door panel on the U-shaped frame 26. The blades of the U-shaped frame 26 may be inserted into the door panel. After that the U-shaped frame 26 and the door panel may be screwed together.
Further, the U-shaped frame 26 may include holes for carrying balls or embossments in the front end part 28 of the horizontal transport portion 18. This guarantees the parallel position of the vertical door portion 16 in relation to the front end part 28 of the horizontal transport portion 18 after the vertical door portion 16 has been pivoted.
Holes 27 in the frame 26 and 37 in the front part 28 may be provided, for instance to allow for air stream or condensate disposal, which holes 27 and 37 will overlap or be arranged on top of each other in the not pivoted position of the door portion 18 and frame 26 as shown in FIG. 5.
Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawing, it is to be understood that the present invention is not limited to those precise embodiments, and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.

List of reference numerals

10: chassis
12: cooking oven chamber
14: oven door system
16: vertical door portion
18: horizontal transport portion
20: pivoting axis
22: inner side of the vertical door portion
24: holding device
26: U-shaped frame
28: front end part of the horizontal transport portion

Claims

An oven with a cooking oven chamber (12) and an oven door system (14), wherein:
- the oven door system (14) comprises a vertical door portion (16) and a horizontal transport portion (18),

- the horizontal transport portion (18) being provided for supporting and transporting the vertical door portion (16),

- the horizontal transport portion (18) being moveable in a horizontal direction between a closed position and an opened position,

- the vertical door portion (16) being provided for covering or closing an opening of the cooking oven chamber (12) in the closed position,

- the vertical door portion (16) being arranged pivotable or pivoting about a vertical pivoting axis (20) with respect to the horizontal transport portion (18),

- wherein the pivoting axis (20) penetrates or runs through the vertical door portion (16) and a front part (28) of the horizontal transport portion (18) and/or wherein a pivoting bearing for the pivoting movement of the vertical door portion (16) with respect to the horizontal transport portion (18) is arranged in or at a front part (28) of the horizontal transport portion (18).
The oven according to claim 1, wherein the vertical door portion (16) is pivotable or pivoting only in the opened position and/or wherein the horizontal transport portion (18) is locked with respect to the chassis (10) in the opened position.
The oven according to claim 1 or claim 2, wherein the vertical door portion (16) or the pivoting bearing comprises a U-shaped frame (26), which preferably is open at an upper side and/or which is, in particular, made of metal, preferably of stainless steel or brass, and/or wherein the vertical door portion (16) comprises a door panel arranged at or within the U-shaped frame (26), wherein preferably two blades of the U-shaped frame (26) are inserted into the door panel and/or wherein the door panel is preferably made of plastics.
The oven according to any one of the preceding claims, wherein a pintle or pivot is arranged at the bottom side, in particular in the centre of the bottom side, of the vertical door portion (16) or of the U-shaped frame (26) and/or wherein the pivoting bearing comprises a pintle or pivot, the pintle or pivot preferably being made of metal such as stainless steel or brass and/or being connected to the vertical door portion (16) or to the U-shaped frame (26) by welding, bolts or gluing.
The oven according to claim 4, wherein a bearing block is arranged on or within the horizontal transport portion (18), preferably in the front part (28) of the horizontal transport portion (18), and/or wherein the pivoting bearing comprises a bearing block,
the pintle or pivot and the bearing block forming the pivoting bearing or the pivoting connection or between the vertical door portion (16) and the horizontal transport portion (18).
The oven according to any of the preceding claims, wherein at least one, preferably several vertically spaced apart, holding device (24) for at least one food stuff rack or cooking good carrier is arranged at the vertical door portion, in particular at an inner side (22) of the vertical door portion facing the cooking chamber in the closed position.