Cooking appliance with a door that has a multi-part interior

Abstract

Cooking appliance (1) with a housing (2) in which a muffle (3) is arranged, the walls of which define a cooking chamber (4), and with a door (6) which is arranged to close the cooking chamber (4), wherein the cooking appliance (1) has a pyrolytic function, wherein the door (6) has an inner side (12) facing the cooking chamber (4), which is formed by a plate (11) made of silicate glass and a separate plate-like supplementary part (13), wherein the plate-like supplementary part (13) is arranged adjoining a lower edge (11a) of the plate (11) downwards and the plate (11) is extended downwards by the supplementary part (13), characterized in that the supplementary part (13) is made of glass.

Description

[0001] The invention relates to a cooking appliance with a housing in which a muffle is arranged, the walls of which define a cooking chamber. The cooking appliance also includes a door for closing the cooking chamber. Furthermore, the cooking appliance has a pyrolytic cleaning function.

[0002] Cooking appliances are known in various designs from the prior art. It is common for a cooking chamber to be bounded by the walls of a muffle arranged in a housing, and for the muffle to have a loading opening at the front through which food to be prepared can be placed in and removed from the cooking chamber. Cooking appliances are also known in which the door for closing this cooking chamber is designed as a hinged door and can thus pivot about a fixed axis relative to the housing. Furthermore, cooking appliances are also known in which such a door, for closing the cooking chamber and thus also the loading opening, can be retracted into a storage compartment formed below the muffle in the housing when opened. Such retractable doors are then, when open, almost completely enclosed in this storage compartment.

[0003] WO 2013 140 081 A1 shows a household oven door comprising an inner glass pane, which is closest to the oven muffle, and an outer glass pane, wherein the glass panes are securely connected to each other and separated by at least one air gap.

[0004] DE10007923 C1 shows a cooking oven door for closing the loading opening of a furnace muffle with a door pane made of borosilicate glass accessible from an outer door space, which, when the cooking oven door is closed, faces the furnace muffle and has a break-reducing print on its outer surface adjacent to the outer door space.

[0005] US4163444 A shows a door for covering the furnace chamber of a pyrolytic area, comprising four spaced panels defining three air cooling channels between them, creating an insulating effect, with inlet and outlet openings located at the top and bottom edges of the door to allow air circulation in the passages.

[0006] Cooking appliances also differ in their functionalities, and modern models often include a pyrolytic cleaning function. During pyrolysis, significantly higher temperatures typically occur than in other food preparation modes of the appliance. Therefore, appliances with this type of function are subject to different, sometimes considerably more extensive, demands regarding their component design than cooking appliances without this feature. These very high temperatures, which reach or exceed 500°C during pyrolysis, place considerable demands on the components exposed to these temperatures.

[0007] The door is particularly affected by this. Especially in pyrolytic ovens, such a door typically has three or more panes of glass in a single unit. The inner side of this door, facing the oven cavity when closed, is therefore subjected to high temperatures. To cope with this, and in particular to reduce warping of the inner door panel, oven doors are known to have an inner pane made of glass-ceramic, which is the inner surface and can withstand these high temperatures. However, such glass-ceramic door panels are relatively expensive, and this improved functionality is only achievable up to a certain size.

[0008] The object of the present invention is to create a cooking appliance in which the inside of a door is designed to be more suitable for use in the pyrolytic operation of the cooking appliance.

[0009] This problem is solved by a cooking appliance which has the features according to claim 1.

[0010] A cooking appliance according to the invention comprises a housing in which a muffle is arranged, the walls of which define a cooking chamber. Furthermore, the cooking appliance also includes a door for closing the cooking chamber, and the cooking appliance features a pyrolytic cleaning function. A key aspect of the invention is that the door has an inner surface facing the cooking chamber, which is formed by a sheet of silicate glass and a separate, plate-like extension. The plate-like extension is arranged adjoining a lower edge of the sheet and extends the surface of the sheet downwards by the extension, which is made of glass.This creates a multi-part interior door surface, consisting of at least two separate parts: the panel and the supplementary part. Together, these form at least a portion of the interior surface, essentially representing the entire interior surface. This design allows the main interior part, the panel, to be smaller, thereby reducing the impact of high temperatures during pyrolysis on the panel's potential for distortion or bending. Furthermore, this allows for the use of a material other than glass-ceramic for the panel, resulting not only in material cost savings but also potentially enabling simplified manufacturing methods.In this context, silicate glass is preferred over other real glass materials, which also offers corresponding advantages, particularly with regard to the environmental conditions for operating a cooking appliance.

[0011] Preferably, the plate is made of borosilicate glass, which particularly achieves the aforementioned advantages of silicate glasses.

[0012] Preferably, in one embodiment the supplementary part is made of silicate glass.

[0013] Preferably, such a materially designed supplementary part is connected to the plate by a connecting strip, which constitutes a separate component distinct from both the plate and the supplementary part. This connecting strip significantly increases the stability of the joint between the plate and the supplementary part. Preferably, the plate and the supplementary part are bonded with an adhesive, and in an advantageous embodiment, the connecting strip is also provided. This creates a fundamental bond between the plate and the supplementary part through the adhesive, and also ensures that the connecting part or the connecting strip is attached to the plate and / or the supplementary part. Thus, this adhesive has a multifunctional function, particularly when a connecting strip is present.

[0014] The connecting strip is preferably not only designed as a flat strip or flat plate, but can also be angled to a certain extent, so that the stiffness is increased and thus the connection point is particularly stable.

[0015] Preferably, the supplementary part and the plate are connected by an adhesive bond.

[0016] In an advantageous embodiment, it is provided that, instead of and especially in addition to this, the supplementary part and the plate are connected by a non-destructively detachable connection, in particular a screw connection and a snap-fit ​​connection. This creates a highly resilient connection point between the supplementary part and the plate, which is particularly advantageous with regard to shape specificity, the material design, and the positional arrangement of the two components, namely the plate and the supplementary part, especially during pyrolysis operation of the cooking appliance.

[0017] Preferably, the non-destructively detachable connection in this embodiment is arranged in a concealed position when viewed from the inside of the door. This means that, for example, screws or locking elements are not visible when the door is assembled and viewed from the inside. Such a concealed or protected arrangement also prevents undesirably high temperatures from affecting these elements during pyrolysis operation.

[0018] Preferably, the supplementary part is connected to a door profile holding the door panel assembly (which includes the plate) by a non-destructively detachable connection, in particular a screw connection or a snap-fit ​​connection. This is a further highly advantageous embodiment, as it further improves the mechanical connection and positional stability of the aforementioned components on the inside of the door. Particularly during pyrolysis operation, this offers further advantages with regard to maintaining the positions of the components individually and relative to each other, as well as increasing dimensional stability.

[0019] Preferably, the plate is designed to have a larger surface area than the supplementary part. In particular, the plate is designed to cover at least 80%, and more specifically at least 90%, of the loading opening of the muffle when the door is closed.

[0020] In particular, the accessory part is designed to have an integrated, semi-trough-shaped condensate drip rail on one underside facing away from the plate. This spoiler-shaped rail allows condensate to drain away in a controlled manner when steam forms in the cooking chamber during operation of the appliance.

[0021] The design of the door, particularly on the inside, allows for a more even temperature distribution across the cooktop, thus significantly reducing the disadvantages of unwanted warping of the cooktop during pyrolytic cleaning, as described above. The cooktop can also feature a steam cooking function, meaning it can also be configured as a steam cooker.

[0022] Further features of the invention are evident from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as those subsequently mentioned in the description of the figures and / or shown in the figures alone, are not only usable in the combinations specified, but also in other combinations or on their own, without departing from the scope of the invention. Thus, embodiments that are not explicitly shown and explained in the figures, but which can be derived and generated from the explained embodiments by separate combinations of features, are also to be considered as encompassed and disclosed by the invention. Embodiments and combinations of features that do not exhibit all the features of an originally formulated independent claim are also to be considered disclosed.

[0023] Exemplary embodiments of the invention are explained in more detail below with reference to schematic drawings. These show: Fig. 1 a perspective view of an embodiment of a cooking appliance according to the invention; Fig. 2 an exploded view of the embodiment of a door of the cooking appliance according to Fig. 1; Fig. 3 a perspective view of a component representing an inside of the door; Fig. 4 a view of an inside of the door according to Fig. 2; Fig. 5 a perspective partial view of the door according to Fig. 4; Fig. 6 a view of the inside of another embodiment of a door for the cooking appliance; and Fig. 7 a perspective view of the execution according to Fig. 6.

[0024] In the figures, identical or functionally equivalent elements are given the same reference symbols.

[0025] In Fig. Figure 1 shows a perspective view of a cooking appliance 1, which is an oven. The cooking appliance 1 comprises a housing 2 in which a muffle 3 is arranged, the walls of which define a cooking chamber 4. The muffle 3 has a loading opening 5 on its front, which can be closed by a door 6. In the exemplary embodiment, the door 6 is a retractable door, for which a storage compartment 7 is formed, which, viewed vertically, is located in the housing 2 below the muffle 3. When the door 6 is fully open, it is therefore at least substantially completely retracted into this storage compartment 7. The door 6 is a pyrolytic cleaning door for the cooking appliance 1.

[0026] The cooking appliance 1 features several cooking functions for preparing food, as well as a pyrolytic cleaning function. Door 6 is specifically designed for pyrolytic cleaning.

[0027] This is in Fig. Figure 2 shows an exploded view of an embodiment of the door 6. The door 6 comprises a pane assembly 8, which includes an outer door pane 9 facing away from the cooking chamber 4 when the door 6 is closed, at least one intermediate door pane 10 arranged parallel to it, and an inner door pane closest to the cooking chamber when the door 6 is closed. In this embodiment, the inner door pane is a plate 11 made of silicate glass, in particular borosilicate glass, and thus of real glass, and also forms part of an inner surface 12 of the door 6, this inner surface 12 essentially forming the cooking chamber-side closure of the door 6. A supplementary part 13 is arranged directly downwards from a vertically downward edge 11a of this plate 11, so that the plate 11 is extended or extended downwards.This supplementary part 13 is therefore preferably designed to extend in the plane of the plate 11 and preferably has a width in the horizontal direction corresponding to that of the plate 11.

[0028] Furthermore, in Fig. Figure 2 also shows two elongated and opposing door profiles 14 and 15, by which the glass unit 8 is held. Preferably, an upper cover plate 16 and other components, which are less important for the explanation and therefore not provided with a further reference numeral, are also arranged on these door profiles 14 and 15.

[0029] Fig. Figure 3 shows an embodiment not belonging to the invention, in which the inside 12 of the door 6 is shown in a perspective view and enlarged, with the panel 11 and a specifically designed supplementary part 13 being shown. In this embodiment, the supplementary part 13 is made of metal, in particular as a sheet metal part, which can also be stainless steel. This supplementary part 13 can also be painted and / or enamelled.

[0030] The supplementary part 13 comprises a seating and support area 17 on which the plate rests, with both the lower edge 11a and a surface 11b being arranged in contact with it. This seating and support area 17 includes a horizontal platform area 17a and an angled strip 17b adjoining it. A condensate drip strip 18 is integrated and thus integrally formed at a lower end or underside of this supplementary part 13 facing away from the plate 11. This drip strip is shaped in a semi-trough-like manner, thus forming a spoiler, and therefore extends out of the plane of the plate 11 and the remaining area of ​​the supplementary part 13. In the embodiment shown, the supplementary part 13 is preferably connected to the plate 11 by an adhesive bond and / or a non-destructive connection, in particular a screw connection.The plate 11 made of borosilicate glass preferably has a size such that, with the door 6 closed, the loading opening 5 is covered by the plate 11 at least 80%, preferably at least 90%.

[0031] Fig. Figure 4 shows an embodiment not belonging to the invention, in which a view of the inside 12 shows a version of the door 6, also showing a plate 11 made of borosilicate glass and a downwardly adjoining supplementary part 13 made of metal. In this embodiment, as is also the case in the embodiment in Fig. 2 and Fig. As may be provided in Figure 3, the supplementary part 13 is attached to the door profiles 14 and 15 by additional retaining elements 19, in particular by a non-destructively releasable connection, for example a snap connection, detent connection, or clip connection. These retaining elements 19 can be integrally molded onto the supplementary part 13 or be additional parts attached to the supplementary part 13. In the upper image in Fig. Figure 5 is an enlarged view of section I in the lower image. Fig. 5 shown, so that the attachment to the door profile 14 can be seen more clearly here.

[0032] In Fig. Figure 6 shows a further embodiment of the door 6 in a view of the inside 12. In contrast to the embodiment in Fig. 2 to Fig. In section 5, it is provided that the supplementary part 13 is not a metal component, but is also made of real glass. It is preferably provided that the real glass plate 11 is connected to the real glass supplementary part 13 by an adhesive bond and additionally by a connecting strip 20. Fig. The connecting strip 20 can be seen in section 7, whereby Fig. 7 a description of the execution in Fig. Figure 6 shows the surface of the interior 12 facing the cooking chamber 4. The view is thus shown in Fig. Figure 7 shows how the inside 12 of the outer door pane 9 faces the surroundings of the cooking appliance 1. Reference symbol list 1 cooking appliance 2 cases 3 Muffles 4 Cooking chamber 5 Loading opening 6 door 7 storage spaces 8-disc package 9 Door outer window 10 Door intermediate pane 11 plate 11a lower edge 11b Surface 12 Inside 13 Supplementary Part 14 Door profile 15 Door profile 16 Cover plate 17 Seating and support area 17a Podium area 17b Groove strip 18 Condensate drip tray 19 retaining elements 20 connecting strip

Claims

[1] Cooking appliance (1) with a housing (2) in which a muffle (3) is arranged, which defines a cooking chamber (4) with its walls, and with a door (6) which is arranged to close the cooking chamber (4), wherein the cooking appliance (1) has a pyrolysis function, wherein the door (6) has an inner side (12) facing the cooking chamber (4), which is formed by a plate (11) made of silicate glass and a separate plate-like additional part (13), wherein the plate-like additional part (13) is arranged adjoining a lower edge (11a) of the plate (11) downwards and the plate (11) is expanded in area downwards by the additional part (13), characterized by that the additional part (13) is made of glass. [2] Cooking appliance (1) according to claim 1, characterized by that the plate (11) is made of borosilicate glass. [3] Cooking appliance (1) according to claim 2, characterized bythat the plate (11) and the additional part (13) are connected with a connecting strip (20). [4] Cooking appliance (1) according to claim 2 or 3, characterized by that the plate (11) and the additional part (13) are connected with an adhesive. [5] Cooking appliance (1) according to one of the preceding claims, characterized by that the additional part (13) and the plate (11) are connected by a non-destructively detachable connection, in particular a screw connection or a snap-in connection. [6] Cooking appliance (1) according to claim 5, characterized by that the connection is arranged so as to be visible when viewed from the inside (12). [7] Cooking appliance (1) according to one of claims 5 or 6, characterized bythat the supplementary part (13) is connected by a non-destructively detachable connection, in particular a screw connection or a snap-in connection, to a door profile (14, 15) holding a door pane package (8) comprising the plate (11) of the door (6). [8] Cooking appliance (1) according to one of the preceding claims, characterized by that the plate (11) is larger in area than the additional part (13), in particular the plate (11) is arranged to cover a loading opening (5) of the muffle (3) by at least 80%, in particular at least 90%. [9] Cooking appliance (1) according to one of the preceding claims, characterized by that the supplementary part (13) has an integrated and semi-channel-shaped condensate drip strip (18) on an underside facing away from the plate (11).

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