Door for a kitchen appliance and kitchen appliance with such a door

Abstract

Door (2) for a kitchen appliance (1) comprising 1.1 a first disc (6), 1.2 a second disc (7), 1.3 and a frame (9) on which the discs (6, 7) are arranged, 1.4 wherein the first pane (6) and the second pane (7) define an airtight interior space, 1.5 wherein the frame (9) is formed in one piece, 1.6 wherein the panes (6, 7) are arranged on the frame (9) in a thermally decoupled manner by means of a sealing material, 1.7 wherein the frame (9) is made of a material with a thermal conductivity coefficient of at most 5 W / mK, and 1.8 wherein at least one grip recess (16) is formed in the frame (9).

Description

[0001] The invention relates to a door for a kitchen appliance. The invention also relates to a kitchen appliance with such a door.

[0002] CN 106 687 748 B relates to a door for a device for cooking and / or warming food and a corresponding manufacturing method. DE 10 2004 011 036 B4 relates to an oven door with at least one laminated pane. DE 10 2010 041 022 A1 relates to a cooking appliance door and a cooking appliance with such a cooking appliance door. DE 43 33 033 C1 relates to a temperature-insulating viewing window or a temperature-insulating viewing door for an appliance with an internal temperature that differs from its ambient temperature.

[0003] Different kitchen appliances have interiors that can be closed with doors. These doors must fulfill different functions. In particular, they should seal off the interior from the outside.

[0004] There is a constant need to improve such doors.

[0005] This object is achieved by a door for a kitchen appliance according to claim 1.

[0006] According to one aspect of the invention, the door comprises a first pane, a second pane, and a frame on which the panes are arranged, wherein the first pane and the second pane define an airtight interior space. Additional components, in particular the frame, can contribute to defining the interior space.

[0007] Because the interior is hermetically sealed, it can form a particularly effective insulator, especially a thermal insulator. The interior can be at least partially, in particular completely, evacuated. This leads to a particularly effective insulation effect. The interior can also be filled with a gas, in particular an inert gas or a noble gas. The interior can also be filled with air.

[0008] A complete interior design also has the advantage that it is insensitive to dirt.

[0009] The kitchen appliance may in particular be a cooking appliance, in particular an oven, a steamer, a microwave or a combination appliance with a combination of different functions of corresponding appliances.

[0010] The panes can be made of glass or plastic, in particular. Plastic panes preferably exhibit the highest possible long-term temperature resistance. The long-term temperature resistance is preferably higher than 450°C. The plastic is preferably transparent. In particular, the plastic has very good impact resistance. The plastic is, in particular, polycarbonate or polymethyl methacrylate.

[0011] The discs can all be made of the same material. It's also possible to create different discs from different materials.

[0012] In particular, the pane facing the receiving space of the kitchen appliance, which is also referred to as the inner pane, is made of a material which is heat-resistant up to at least 100 °C, in particular at least 150 °C, in particular at least 200 °C, in particular at least 250 °C, in particular at least 300 °C, in particular at least 400 °C, in particular at least 500 °C.

[0013] According to a further aspect of the invention, at least one of the panes, in particular both panes, has a coating. This can be an optically effective coating. It can also be a heat-reflecting coating. The panes can each have a coating on their inner side and / or on their outer side. The coatings can be identical or different.

[0014] At least one, but especially both, of the panes can have a so-called all-black effect coating. This means that a view into the appliance's housing is only possible if it is illuminated from within; otherwise, the panes can be completely opaque, particularly appearing black.

[0015] According to a further aspect of the invention, the panes are arranged hermetically on the frame. The panes can, in particular, be glued to the frame.

[0016] Sealants, in particular sealing cords and / or sealing compound, can be provided to seal the panes to the frame.

[0017] According to a further aspect of the invention, the panes are fitted with a form-fitting fit into designated recesses on the frame. This results in a particularly secure connection between the panes and the frame.

[0018] According to a further aspect of the invention, the frame can be formed as a single piece. This is advantageous regardless of other aspects of the invention. The frame can, in particular, have a simple, interconnected structure. It can, in particular, be designed to be closed all the way around.

[0019] A one-piece frame design results in particularly strong mechanical stability. Furthermore, a one-piece frame design reduces assembly effort and join processes. A one-piece frame can also be manufactured using a single mold.

[0020] According to a further aspect of the invention, the door has a third pane. Additional panes are also possible in principle.

[0021] The door's insulating effect can be further improved by adding a third and / or additional panes. In particular, it is possible to divide the hermetically sealed interior into individually hermetically sealed compartments using the third and / or additional panes.

[0022] According to one aspect of the invention, the first disc and the second disc are arranged parallel to one another. It is particularly possible to arrange all of the discs parallel to one another.

[0023] According to a further aspect of the invention, the third pane is arranged hermetically on the frame. Additional panes can also be arranged hermetically on the frame.

[0024] According to one aspect of the invention, the frame encloses a frame opening. Preferably, at least the first and second panes, in particular all of the panes, are at least as large as, and in particular larger than, the frame opening. The panes can, in particular, completely cover the frame opening.

[0025] According to a further aspect of the invention, the panes can project beyond the frame. Alternatively, it is also possible for the frame to form a peripheral edge for a subset of the panes, or for all of the panes. This allows for a particularly robust and resilient door design.

[0026] In principle, it is also possible for one or more of the panes, in particular all of the panes, and the frame to be flush with each other.

[0027] According to a further aspect of the invention, the third pane is arranged between the first pane and the second pane. The first pane and the second pane can, in particular, form an inner pane of the door and an outer pane of the door.

[0028] The third pane can be smaller than the first pane and / or the second pane. In particular, it can extend only over a portion of the frame opening. This makes it possible to design the door with functionally different sections.

[0029] According to a further aspect of the invention, a first hermetically sealed subchamber is formed between the first pane and the third pane, and a second hermetically sealed subchamber is formed between the third pane and the second pane. Alternatively, it is also possible to design only one of the two subchambers to be hermetically sealed.

[0030] The compartments may be partially or completely evacuated or filled with gas. For further information, please refer to the previous description.

[0031] According to a further aspect, the panes are thermally decoupled from the frame by means of a sealing material. The sealing material can be formed, in particular, by the adhesive between the frame and the panes. Due to its material properties, the adhesive has a thermally decoupling effect. The reduced, particularly point-like, contact points between the frame and the pane reduce thermal bridges.

[0032] The sealing material for arranging the panes on the frame can be a melamine resin, a flexible open-cell foam based on melamine resin, such as Techo-Foam 250 from the TechnoPhysik Group, glass mats, self-adhesive insulating tape, or any other sealing material with suitable physical properties. The sealing material preferably has an application temperature of at least 100°C, in particular 150°C, in particular 200°C. The short-term temperature load of the sealing material is preferably at least 150°C, in particular at least 200°C, in particular at least 250°C. The sound absorption coefficient of the sealing material is preferably at least 60%, in particular at least 75%, in particular at least 90%, according to DIN 52615. According to DIN 52612, the thermal conductivity of the sealing material at 10 °C is preferably less than 0.1 W / mK, in particular less than 0.07 W / mK, in particular less than 0.04 W / mK.The sealing material is also preferably flame-retardant according to DIN 4102. Furthermore, the sealing material must not cause contamination between the panes.

[0033] According to a further aspect of the invention, the frame is made of a material with a thermal conductivity coefficient of at most 5 W / mK, in particular at most 1 W / mK, in particular at most 0.1 W / mK. The frame has, in particular, high impact resistance. Preferably, the surface of the plastic frame is provided with an eroded structure in accordance with the VDI 3400-36 guideline.

[0034] According to a further aspect of the invention, at least one recessed grip is formed in the frame. The recessed grip can be designed as an undercut. This allows the recessed grip to be made invisible. This means that the recessed grip is not visible when viewed vertically from the front of the door. The door can thus have a handle-free appearance.

[0035] The door can have one or more recessed handles, particularly on one of the two sides, i.e., on the left or right, or on both sides. The door can also have one or more recessed handles at the top and / or bottom. Combinations are also possible.

[0036] According to a further aspect of the invention, a drip channel is attached or formed on the inside of the door. The drip channel can serve to collect liquid running down the door. It allows the corresponding liquid to be directed into a predetermined area within the receiving space of the kitchen appliance.

[0037] According to a further aspect of the invention, recesses for the passage of hinges can be provided in the frame. The hinges can serve to attach the door to the kitchen appliance. They can allow the door to pivot relative to the appliance housing.

[0038] Another object of the invention is to improve a kitchen appliance.

[0039] This object is achieved by a kitchen appliance with a storage compartment and a door according to the preceding description. The storage compartment can be closed by means of the door. In particular, the storage compartment can be closed in a moisture- and / or air-tight manner by means of the door.

[0040] The advantages arise from those of the door.

[0041] According to one aspect of the invention, the door is pivotably mounted on a device housing by means of one or more hinges. At least one of the hinges, in particular all of the hinges, can have a hinge cover. The hinges are, in particular, completely covered by the hinge cover, i.e., invisible. This reliably prevents the hinges from becoming dirty.

[0042] The hinge cover can be removable. This can be useful for maintenance purposes.

[0043] According to a further aspect of the invention, the hinge cover is arranged so that it can be displaced relative to the door and / or relative to the device housing. The hinge cover can, in particular, be arranged so that it can rotate relative to the door and / or can be linearly displaced relative to the device housing. Combinations or alternatives are also possible.

[0044] The hinge cover can in particular be movable relative to the device housing.

[0045] The hinge cover can in particular be arranged pivotably on the door or on the device housing.

[0046] According to one aspect of the invention, a display and / or operating device of the kitchen appliance is arranged above the door.

[0047] According to one aspect of the invention, a gap with a height h in the range of 1 mm to 10 mm, in particular in the range of 2 mm to 7.5 mm, in particular in the range of 3 mm to 5 mm, in particular approximately 4 mm, is formed between an upper boundary edge of the door and a lower boundary edge of the display and / or operating device. This improves the thermal decoupling between the door and the display and / or operating device.

[0048] The display and / or operating device may comprise a touch-sensitive screen (touch display).

[0049] The display and / or control device can be removable.

[0050] Further details and advantages of the invention will become apparent from the description of exemplary embodiments based on the figures. They show: Fig. 1 a perspective view of a kitchen appliance with a door according to the invention, Fig. 2 an exploded view of the Fig. 1 door shown, Fig. 3 is a perspective view of a cover for a hinge on the door according to the invention for a kitchen appliance, Fig. 4 shows a section through the hinge of the door according to the invention mounted on a kitchen appliance, the door being fully open, Fig. 5 a section through the hinge of the door according to the invention mounted on a kitchen appliance, the door being angled, Fig. 6 a section through the hinge of the door according to the invention mounted on a kitchen appliance, the door being completely closed.

[0051] Fig. Figure 1 shows a kitchen appliance 1 in the form of an oven, with a door 2 according to the invention. The door 2 is connected to the appliance housing 5 of the kitchen appliance 1 via hinges 3. The hinges 3 are covered by slidably mounted hinge covers 4. The door 2 can reversibly close the interior 31 of the kitchen appliance 1. The kitchen appliance 1 also has a display and operating device 32 on its front side. The function of the hinge covers 4 is shown in the Fig. 4 to 6 are visible.

[0052] In Fig. Figure 2 shows a preferred embodiment of the door 2 in an exploded view. The door 2 comprises a first pane 6, a second pane 7, and a third pane 8, which are arranged in a frame 9. The panes 6, 7, 8 are made, in particular, of glass or plastic. The panes 6, 7, 8 can be made of the same or different materials. The frame 9 is formed as a single piece.

[0053] The second pane 7 is in particular made of a material which is heat-resistant up to at least 100 °C, in particular at least 150 °C, in particular at least 200 °C, in particular at least 250 °C, in particular at least 300 °C, in particular at least 400 °C, in particular at least 500 °C.

[0054] The panes 6, 7, 8 are preferably provided with a heat-reflecting coating. The panes preferably have an all-black effect coating, which means they only become transparent when illuminated from the interior of the kitchen appliance 1.

[0055] The second pane 7 defines the rear side of the door 2, and the first pane 6 defines the front side of the door 2. Textured sheets 10, 11, and 12 are glued to the first pane 6. Plug-in part holders 13 are inserted into the laterally arranged textured sheets 12. The hinge blades 14 are inserted and secured into the plug-in part holders 13 during final assembly.

[0056] The first pane 6 is attached to the frame 9 via snap hooks in the frame 9. The snap hooks engage in holes, particularly elongated holes, in the structural panels 10, 11, 12. A sealing cord 15 is arranged in the upper edge of the door 2 between the frame 9 and the first pane 6 to prevent liquids from penetrating the door 2.

[0057] The third pane 8 is secured in the frame 9 via a clip mechanism. A hermetically sealed first space is formed between the first pane 6 and the third pane 8 by a suitable spacing of the clip mechanisms and the snap hooks.

[0058] The second pane 7 is glued to the frame 9. The second pane 7 is glued to the frame opposite the first pane 6. This creates a second, hermetically sealed space between the second pane 7 and the third pane 8. The adhesive bond seals the second space from the environment.

[0059] The first and second gaps can be evacuated during assembly, so that after assembly and sealing, a near-vacuum exists in the two gaps. Such a vacuum enhances the insulating effect of the door 2. Alternatively, the two gaps can be filled with an inert gas or noble gas. Alternatively, the gaps can be filled with air. The first and second gaps can also be filled with various media, in particular with any combination of the variants listed above.

[0060] The two gaps thermally decouple the first pane 6 from the second pane 7, ensuring that the latter heats up to a maximum of 55 Kelvin, even at full oven load. In particular, the two gaps ensure that the second pane meets the requirements of DIN EN 60335. Furthermore, the two hermetically sealed gaps prevent dirt from accumulating on the inside of the door.

[0061] Insulations 17, 18 are arranged between the first intermediate space and the recessed grips 16 integrated in the frame 9. The recessed grips 16 are designed as undercuts in the frame 9. The recessed grips 16 are not visible, particularly in a vertical projection from the front of the door 2.

[0062] The insulations 17, 18 are stabilized by the panel 19 and the frame 9. The insulations 17, 18 consist of a flexible, open-cell foam made from melamine resin. Alternatively, the insulations 17, 18 can be made from another suitable material. The insulations 17, 18 thermally decouple the recessed handles 16 of the frame 9. This thermal decoupling ensures that the user does not suffer burns from the recessed handles 16 when opening or closing the door 2.

[0063] A drip tray 39 is mounted on the rear of door 2, below the second pane 7. When the door is open, the drip tray 39 collects any condensation on the rear of door 2, particularly on the second pane 7, and thus prevents it from flowing through the gap between door 2 and appliance housing 5 when the door 2 is open. When the door is closed, the drip tray 39 is positioned in a groove in the cooking chamber seal and forms an additional collecting tray for excess water during the "steaming" and "cleaning" cooking methods.

[0064] In Fig. Figure 3 shows the structure of the hinge cover 4. The hinge cover 4 comprises several stiffening ribs 21 and two stop ribs 22 on the inner side 20. A connecting element 24 is arranged on the outer side 23, via which the hinge cover 4 is movably connected to the door 2. The connecting element 24 pulls the hinge cover 4 out of the cooking chamber and pushes it back into the chamber when the door 2 is opened and closed. Furthermore, the hinge cover 4 has an edge 35 on the outer side 23, which, when opened, is flush with the appliance housing 5.

[0065] A groove 26 is provided on the front side 25 of the hinge cover 4, which interacts with the hinge 3 during opening and closing. A sliding surface element 28 with sliding surfaces 29 is arranged on the rear side 27 of the hinge cover 4. The sliding surfaces 29 interact with the device housing 5 and ensure the guidance of the hinge cover 4.

[0066] In Fig. 4 to Fig. 6 shows the closing process of door 2. In Fig. 4, the door 2 is fully open. The connecting element 24 pulls the hinge cover 4 almost completely out of the device housing 5. The sliding surface 29 slides along a side plate 30. The hinge is fully open.

[0067] In Fig. 5, the door 2 is closed at 45°. The connecting element 24 raises the front side 25 of the hinge cover 4. Due to the interaction of the sliding surface 29 and the side plate 30, the hinge cover 4 is not raised in the device housing 5 but slides into the device housing 5. The groove 26 in the front side 25 of the hinge cover 4 allows the hinge blade 14 to rotate without colliding with the hinge cover 4.

[0068] In Fig.6, the door 2 is fully closed, and the hinge 3 assumes a 90° position. The hinge cover 4 is inserted into the device housing 5 over a large part of its length. The insertion depth of the hinge cover 4 into the device housing 5 is limited by the stop rib 22 and the connecting element 24. This ensures that the hinge cover 4 does not slide completely into the device housing 5 if the connecting element 24 is missing or broken, thus requiring disassembly of the device housing 5.

Claims

[1] Door (2) for a kitchen appliance (1) comprising 1.1 a first disc (6), 1.2 a second disc (7), 1.3 and a frame (9) on which the discs (6, 7) are arranged, 1.4 wherein the first pane (6) and the second pane (7) define an airtight interior space, 1.5 wherein the frame (9) is formed in one piece, 1.6 wherein the panes (6, 7) are arranged on the frame (9) in a thermally decoupled manner by means of a sealing material, 1.7 wherein the frame (9) is made of a material with a thermal conductivity coefficient of at most 5 W / mK, and 1.8 wherein at least one grip recess (16) is formed in the frame (9). [2] Door (2) according to claim 1, characterized by that the panes (6, 7) are arranged airtight on the frame (9). [3] Door (2) according to one of the preceding claims, characterized by that it has a third disc (8). [4] Door (2) according to claim 3, characterized by that the third pane (8) is arranged airtight on the frame (9). [5] Door (2) according to one of claims 3 or 4, characterized by that the third disc (8) is arranged between the first disc (6) and the second disc (7). [6] Door (2) according to claim 5, characterized by that a first airtight partial space is formed between the first pane (6) and the third pane (8) and a second airtight partial space is formed between the third pane (8) and the second pane (7). [7] Kitchen appliance (1) comprising 7.1 an interior space (31) and 7.2 a door (2) according to one of the preceding claims, 7.3 wherein the interior space (31) can be closed by means of the door (2). [8] Kitchen appliance (1) according to claim 7, characterized bythat the door (2) is pivotally mounted on a device housing (5) by means of one or more hinges (3), wherein at least one of the hinges (3) has a hinge cover (4). [9] Kitchen appliance (1) according to claim 8, characterized by that the hinge cover (4) is arranged to be displaceable relative to the door (2) and / or relative to the device housing (5). [10] Kitchen appliance (1) according to claim 9, characterized by that the hinge cover (4) is arranged so as to be rotatable relative to the door (2) and / or linearly displaceable relative to the device housing (5). [11] Kitchen appliance (1) according to one of claims 7 to 10, characterized by that a display and / or operating device (32) of the kitchen appliance (1) is arranged above the door (2), wherein a gap with a height h in the range of 1 mm to 10 mm is formed between an upper boundary edge of the door (2) and a lower boundary edge of the display and / or operating device (32).

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