WO2013045286A1

WO2013045286A1 - Door for a domestic appliance, and domestic appliance having a door

Info

Publication number: WO2013045286A1
Application number: PCT/EP2012/068023
Authority: WO
Inventors: Frederic Dubois; Sebastien Flesch; Pierre Steiner
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2011-09-28
Filing date: 2012-09-14
Publication date: 2013-04-04
Also published as: EP2761229B1; EP2761229A1

Abstract

The invention relates to a door (4) for a domestic appliance (1), having an outer door panel (5) and at least one further panel (6 to 8), the latter being spaced apart from the outer door panel (5), a door‑side flow channel (11) therefore being formed between the outer door panel (5) and the further panel (6 to 8), wherein at least one flow‑channel opening (12 to 14) is formed at an upper end of the further panel (6 to 8), between the outer door panel (5) and the further panel (6 to 8), and a seal (20) is arranged on the flow‑channel opening (12 to 14). The invention also relates to a domestic appliance (1) having a door (4).

Description

Door for a household appliance and household appliance with a door

The invention relates to a door for a household appliance with an outer door panel and at least one further disc, which is arranged at a distance from the outer door panel, so that a door-side flow channel is formed between the outer door panel and the further disc. At an upper end of the further disc, a flow channel opening is formed between the outer door panel and the further disc. Furthermore, the invention relates to a household appliance with such a door.

In cooking appliances, in particular an oven, it is known that a door for closing a cooking chamber has a plurality of door windows, which are spaced apart from each other and arranged to extend in parallel. By such a disc package, which may also have at least one lying between the door outer pane and the door inner pane door intermediate disc, should also be achieved in particular that the temperature prevailing in the cooking chamber is not completely transferred to the door outer pane. In addition, it is desired, on the one hand to protect the oven from unnecessary loss of heat by means of the door, on the other hand, the door outer pane does not get too hot. For this purpose, it is known that by means of one or more fans in the household appliance, an air flow is generated, which is promoted by the respective intermediate areas of the discs in the door needs, in order to achieve the above aspects. The suction of the air can take place from outside the cooking appliance, wherein the air flow is passed through corresponding door-side and device-side flow channels. In presently known embodiments, with the door closed, there is an undesirable interface between the door-side flow channel and the device-side flow channel, which are adjacent to each other. This is disadvantageous in terms of flow optimization, cooling effect and also with regard to the extraction of vapors from the cooking chamber via this interface. It is an object of the present invention to provide a door for a household appliance as well as such a household appliance, in which the interface between a door-side and a device-side flow channel is improved.

This object is achieved by a door and a household appliance according to the independent claims.

A door according to the invention for a household appliance comprises an outer door panel and at least one further disc, which is arranged at a distance from the door outer panel, so that a door-side flow channel is formed between the outer door panel and the further disc. At an upper end of the further disc, a flow channel opening is formed between the outer door panel and the further disc. At this flow channel opening a seal is arranged. Such an additional element optimizes the interface with regard to the flow effect.

It is preferably provided that the seal is arranged completely circumferentially around the flow channel opening.

In particular, it is provided that at the upper end of the further disc between the outer door panel and the other disc a cover member is arranged, which has the flow channel opening. Mechanical stability with respect to the two discs on the one hand and the design of the flow channel opening on the other hand is achieved. In addition, can be achieved by this cover also the largest possible and mechanically stable attachment of the seal. The seal does not have to be directly attached to one of the discs.

In addition, the orientation and position of the flow channel opening can be specifically designed and permanently held by means of this cover. It is preferably provided that the seal is arranged on the outer wall of the cover. As a result, a particularly emphasized connection to the housing of the household appliance can be achieved. In particular, the seal is made of an elastically and reversibly deformable material, for example an elastomer or thermoplastic. The advantages mentioned above are thereby further favored. In addition, such a design is low-wear and reduced in weight as possible, so that the weight of the door is negligible and negligible compared to the other components.

The seal is preferably arranged directly in the region of an edge of the cover element bounding the flow channel opening. As a result, the most flush possible transition between the door-side flow channel and the seal can be achieved, so that no unnecessary sudden changes in cross-section of the flow channel in the door occur here in comparison to the cross section of the seal. The air flow generated in the door-side flow passage can thereby be correspondingly continued in the section in which the door-side seal is then disposed, without causing large turbulences or the like. Furthermore, the invention relates to a household appliance with a door according to the invention or an advantageous embodiment thereof. In a particularly emphasized manner, it is provided that the seal, which is arranged on the door, and can be referred to as the first seal, in the closed state of the door rests directly against a wall bounding a device-side flow channel and a, in particular sealing, Strömungskanalkoppelelement between the door side Flow channel and the device-side flow channel forms. Especially in the closed state of the door quasi a flow channel adapter is formed by this door-side first seal, which also allows a possible large-scale concerns the seal on the housing of the household appliance through its preferably provided flexibility, so just at this interface between the door and the housing and thus the facing flow channels of the door on the one hand and the housing on the other hand, no leakage occurs. This has considerable advantages in that even no intake of air, for example from the cooking chamber, occurs via this interface in the door-side flow channel and / or the device-side flow channel or housing-side flow channel.

Preferably, it is provided that the household appliance is a cooking appliance with a cooking chamber which can be closed by the door. In particular, the cooking appliance is an oven.

It is preferably provided that a portion of the door-side first gasket closer to the cooking chamber forms a seal of the flow channel to the cooking chamber and another, in particular second, door-side gasket, spaced Garraumzugewandt arranged for Garraumabdichtung to the first seal. As a result, the extraction of vapors from the oven can be prevented particularly efficient.

This first seal serving as a flow channel coupling element also ensures that when the door is closed, an optimized air flow rate is achieved and, in particular, the temperature of the door outer pane can be reduced more efficiently to the desired level, without the speed of the fan having to be increased or even using a fan with greater suction power must become. Viewed in reverse view, it is now ensured by the invention now that in comparison to the suction power weaker blower can be used in comparison to the prior art, since no such undesirable leakage currents occur at the interface between the door and the housing.

An embodiment of the invention will be explained in more detail with reference to schematic drawings. Show it:

Fig. 1 is a schematic longitudinal sectional view of an embodiment of a household appliance according to the invention; Fig. 2 is an enlarged view of a partial section of the illustration in Fig. 1; and

Fig. 3 is an illustration of the door with a view of the inside of the door outer pane.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

In Fig. 1, a household appliance designed as a baking oven 1 is shown in a schematic longitudinal sectional view and thus in a vertical section. The oven 1 includes a cooking chamber 2, which is bounded by walls of a muffle 3. On the front side, the muffle 3 has a charging opening, which can be closed by a door 4. In the illustration shown in Fig. 1, the door 4 is shown in the fully closed state. In the exemplary embodiment, the door 4 comprises an outer door outer pane 5, a door inner pane 6 closest to the cooking space, and door intermediate windows 7 and 8 located between the outer door pane 5 and the inner door pane 6. The four panes 5 to 8 are each arranged parallel to one another and at a distance, so that in each case between two adjacent disc a gap is formed.

As can be seen, the outer door panel 5 is designed to be larger in size with respect to its height (y-direction) than the further panels 6 to 8.

Adjacent to the upper edges of the discs 6 to 8, a cover member 9 is arranged, which covers the intermediate spaces formed between the discs 5 to 8 from above.

Through the spaces between the discs 5 to 8, flow zones or flow channels are formed through which air flows generated by means of a blower 10 can flow. As a result, on the one hand, cooling of the outer panes, in particular the door outer pane 5, is achieved. On the other hand, the air circulation and flow is performed as needed, that in particular the door inner pane 6 is only slightly cooled, in order not to remove unnecessary heat energy from the cooking chamber 2 in this regard.

In Fig. 2 is an enlarged view of the partial section II in Fig. 1 is shown. Door side, a door-side flow channel 1 1 is formed in the region of the cover 9. In the cover 9, three flow channel openings 12, 13 and 14 are formed as shown in FIG. FIG. 3 shows in this respect a view of an inner side 15 of the outer door panel 5, wherein, as shown in FIG. 1, the inner side 15 faces the further panels 6 to 8. Fig. 3 thus shows a quasi view of the cooking chamber 2 out on the door 4th

In the illustration with closed door 4 shown in FIG. 2, the flow channel openings 12 to 14 are adjacent to a flow channel opening 16 a device housing-side flow channel 17. This flow channel 17 is thus arranged in a housing 18 of the oven 1. As can be seen in the illustration according to FIG. 2, a free space 19 is formed between the door 4 and the housing 18.

In this space 19, a first door-side seal 20 is arranged. It is arranged on an outer wall 21 of the cover 9 and formed as shown in FIG. 3 as a completely closed circumferential seal 20. The flow channel openings 12 to 14 are thus quasi framed by this first seal 20. 2, the seal 20 is also arranged on the housing 18 with the door 4 closed, so that the free space 19 in the region of the flow channel openings 12 to 14 is sealed by this seal 20 and thus the Seal 20 also serves as Strömungskanalkoppelelement or adapter between the flow channels 1 1 and 17.

Furthermore, as shown in FIG. 2, it can be seen that the seal 20, with its inner sides 20a facing one another, is arranged level with the edge 22 of the cover element 9 delimiting the flow channel openings 12 to 14 immediately adjacent to it. The width or the cross-sectional opening of the seal 20 thus corresponds to the flow cross-section of the flow channel openings 12 to 14.

In addition, it is provided that, spaced from this first seal 20, a further seal 23 is arranged on the door 4, which is positioned closer to the cooking chamber than the first seal 20. It is also arranged in particular on the cover 9. Just by the lower horizontally extending portion of the first seal 20 and this further second seal 23 thus a leakage flow from the cooking chamber 2 in the flow channel 1 1 and / or 17 is prevented in particular via the space 19. LIST OF REFERENCE NUMBERS

oven

muffle

door

Door outer pane

Door inner pane

, 8 door washers

cover

0 blower

1 door-side flow channel

2, 13, 14, 16 flow channel openings

5 inside

7 device-housing-side flow channel8 housing

9 free space

0 seal

0a inside

1 outer wall

2 edge

3 seal

Claims

Patent claims

1. Door (4) for a household appliance (1), with an outer door pane (5) and at least one further pane (6 to 8), which is arranged at a distance from the outer door pane (5), so that between the outer door pane (5) and the further pane (6 to 8) a door-side flow channel (1 1) is formed, with at least one flow channel opening (12) at an upper end of the further pane (6 to 8) between the outer door pane (5) and the further pane (6 to 8). to 14), characterized in that a seal (20) is arranged at the flow channel opening (12 to 14).

2. Door (4) according to claim 1, characterized in that the seal (20) is arranged completely circumferentially around the flow channel opening (12 to 14).

door

(4) according to claim 1 or 2, characterized in that at the upper end of the further pane (6 to 8) between the outer door pane

(5) and the further disk (6 to 8) a cover element (9) is arranged, which

Has flow channel opening (12 to 14).

Door (4) according to claim 3, characterized in that the seal (20) is arranged on the outer wall (21) of the cover element (9).

Door (4) according to claim 3 or 4, characterized in that the seal (20) is arranged directly in the area of an edge (22) of the cover element (9) delimiting the flow channel opening (12 to 14).

6. Household appliance (1) with a door (4) according to one of the preceding claims.

7. Household appliance (1) according to claim 6, characterized in that the seal (20) in the closed state of the door (4) directly on one

the wall delimiting the flow channel (17) on the device housing side and a In particular, a sealing flow channel coupling element forms between the door-side flow channel (1 1) and the device housing-side flow channel (17).

8. Household appliance according to claim 6 or 7, characterized in that it is a cooking appliance (1) with a cooking chamber (2) which can be closed by the door (4).

9. Household appliance (1) according to claim 8, characterized in that a

The section of the seal (20) that is closer to the cooking space (2) forms a seal of the entire flow channel (11, 17) to the cooking space (2) and a further seal (23) for sealing the cooking space is spaced apart from the seal (20).

is arranged closer to the cooking space.