ES2769637T3 - Household appliance - Google Patents

Abstract

Domestic appliance (1), in particular cooking appliance (2) with at least one treatment chamber (3) and a loading opening (4) and at least one door system (5) that closes the loading opening (4 ) of the treatment chamber (3), in which the door system (5) has at least one receptacle (6) with at least two support segments (7), the door system (5) including at least two surface components (8, 18, 28), in particular heat-resistant glass plates, which are arranged on the support segments (7), of which there are at least two and the receptacle (6) presenting at least two devices spacers (9), of which at least one spacer device (9) is configured at least in part flexible, to orient at least one of the surface components (8, 18, 28) with respect to at least two of the segments of support (7), of which there are at least two, characterized in that at least one of the distance devices (9) is constituted It is at least partially U-shaped and such that it can interlock with the support segment (7) and is fixed thereto such that it can slide and because the spacing device (9) is made in one piece and as a piece of stamped as well as bent sheet metal and including two spring elements (19, 39), which are formed in the form of brackets and which are suitable for remotely orienting a respective surface component (18, 28).

Description

DESCRIPTION

Household appliance

The present invention relates to a household appliance and in particular to a cooking appliance with at least one treatment chamber and a loading opening and at least one door system that closes the loading opening of the treatment chamber.

Many household appliances, such as cooking ovens and washing machines, have a treatment chamber, which is accessible through a door and can be closed by the door. In cooking ovens and other cooking appliances, such as steam cookers or microwave appliances, the treatment chamber is generally configured as a cooking chamber, which can be heated with a heat source to prepare food. High temperatures often reign in the firing chamber during oven operation. To protect the external environment of the cooking chamber against heat and to exclude the risk of injury, as well as to enable a certain energy efficiency of the cooking appliance, the correspondingly isolated cooking chamber must be provided. This is particularly so when the apparatus is intended for pyrolysis operation, in which the firing chamber is heated to temperatures above 400 ° C. Even then a risk of injury from touching the outer glass should be avoided.

The door plays an important role in terms of the insulation against heat of a cooking chamber, since it must, on the one hand, allow quick access to the cooking chamber, even during oven operation, but on the other hand also it must guarantee good thermal insulation. In addition, the door must allow a glance at the cooking chamber and the food that is there, without having to open the door, thus losing heat energy. The doors usually have a peephole for this. Insulating a door therefore involves a more complex task than, for example, insulating a side surface of the cooking chamber.

Due to the state of the art, doors with a multi-crystal structure have therefore been disclosed. In such a multi-pane door, several panes are arranged one after the other most of the time such that certain gaps are formed between the panes. The interstices can be traveled by an air stream, for cooling. A drawback of such doors is that frame pieces are often used to arrange the glass, which can act as a thermal bridge. The heat from the glass facing the cooking chamber is then relayed to the outer glass, whereby the outer glass can become unpleasantly or even dangerously hot.

Document EP 0893654 A1, document EP 1450 104 A2 and document EP 1647775 A2 disclose oven doors for cooking in which fixing elements can be used in each case, configured to hold two interior windows, clamping the windows themselves . For this, the elastic fixing elements are constituted, to cause a clamping effect.

The manufacture of multicrystal doors is also often very expensive, since the different crystals have to be oriented during assembly, taking up a lot of time. Such an orientation is generally necessary to arrange the crystals with respect to the frame pieces so that as far as possible no large contact points result that could act as thermal bridges. But on the other hand, the windows must also be arranged at a certain proximity to the frame parts, to prevent them from falling or even to avoid lack of sealing. A further problem in the manufacture and assembly of multi-pane doors is that expansion, if any, of the panes as well as of the frame parts must be taken into account, due to heat input for example during operation oven or pyrolysis operation.

It is therefore the aim of the present invention to provide a household appliance that features a door with a well insulating, multi-crystal structure that is easy to assemble.

This objective is achieved by a household appliance with the features of claim 1. Preferred features are the subject of the secondary claims. Other advantages and characteristics result from the general description of the invention and from the description of the exemplary embodiment.

The domestic appliance corresponding to the invention is in particular a cooking appliance and has at least one treatment chamber and a loading opening, as well as at least one door system that closes the loading opening of the treatment chamber. The door system includes at least one receptacle with at least two support segments, being arranged next to the support segments, of which there are at least two, at least two surface components. The receptacle then has at least two spacer devices, of which at least one spacer device is configured at least in part flexible, to orient at least one of the surface components with respect to at least two of the support segments, of which there are at least two.

The household appliance corresponding to the invention has many advantages. A considerable advantage is that the household appliance includes at least two spacer devices, of which at least one spacer device is configured at least in part flexible. With such a spacer device, at least one surface component can be oriented relative to the support segments. This is especially advantageous because a minimum distance between the surface components and the support segments can be maintained by the spacer device. In this way, the door system is particularly well insulated from the home appliance and is securely housed, since the passage of heat through thermal bridges between the surface components and the support segments is reduced. The components are essentially thermally decoupled from each other. For example, despite the high temperatures during pyrolysis operation, a non-hazardous temperature can thus be ensured for people on a surface component located on the outer side.

Another considerable advantage is that manufacturing tolerances as well as size variations of the surface components can be compensated by such a spacer device. Such variations in the size of the surface components can occur, for example, due to temperature variations during the operation of the domestic appliance and in particular when heating and cooling the cooking chamber and especially in the pyrolysis operation. In this way, an orientation of the surface components that would be time consuming is no longer necessary and the assembly of the door system is considerably simplified and cheaper.

The spacer device is configured, at least in part, flexible and can be compressed and / or crushed or the like. The spacer device is preferably made resistant to heat and in particular resistant to typical temperatures to which it is subjected during pyrolysis operation.

The receptacle can be constituted as a frame or the like. In either case, the receptacle is suitable and is configured to house and hold at least two surface components. To accommodate the surface components, the receptacle has at least two support segments. Preferably the support segment is a segment of a support module. It is possible that the support module also has two or more support segments. The support segment can also be constituted as at least one separate support module. The support module is configured in particular as a profiled tube and / or a profiled strut and / or a profiled batten and / or as a bar and / or rod.

The surface component may be made of glass and / or a slice-shaped plate or include one. Preferably the surface component is configured as a heat resistant glass plate. It is also possible that the surface component is curved in space. The surface component can also be configured as a wall element and / or a closure system and / or a spacer module. Preferably the floating surface component is supported in the receptacle. In either case, the surface component is suitable and is configured to cover the loading opening of the treatment chamber, at least partially.

According to the invention, the spacer device includes two spring elements, which are constituted in the form of brackets and which are suitable for remotely orienting a respective surface component.

It is also possible that at least one spacer device is configured at least partially rigid. The spacer device can then either be mounted on the surface component or be a part thereof and for example be configured as an elevation of the surface component. The rigid spacer device may also be configured as a protrusion or the like of the support module. Preferably, the rigid spacer device may be arranged and configured, at least in part, in a manner similar to that described for the flexible spacer device.

Especially preferably the receptacle includes at least two spacer devices that are at least partially flexible. Both spacer devices are then configured, in particular elastic and / or as a spring element, or include such. One such variant of configuration is especially advantageous, since the surface component, due to the elastic force of both spacer devices, is oriented in the center between the support modules. Thus the surface component is practically arranged centered independently of size fluctuations due to manufacturing tolerances or thermal expansion. This avoids an especially large distance between the surface component and the support module, on the one hand, as well as an especially small distance on the other hand.

It is also especially preferred to arrange the spacer devices, of which there are at least two, on opposite sides. This prevents oblique orientation and / or tilting of the component. of surface between the support segments. At least two spacer devices on one side and at least two spacer devices on the other side are also possible. But different numbers of spacers can also be arranged on opposite sides.

According to the invention, at least one spacer device is configured to place it in the support segment. At least one spacer device must be able to be attached to the support segment so that it can slide, so that the spacer device can be pre-mounted on the support segment and does not fall off in the following mounting steps. The spacer device can then be easily adjusted by sliding. For example, the support segment may have a slot, profiled cavity and / or bar or the like, into which the spacer can be inserted and moved.

Furthermore, at least one spacer device is constituted, at least partially, in the form of a U and such that it can be interlocked with the support segment. The spacer device must then encompass the support segment, in particular partially. The spacer device and the support profile can have hooks, tabs, projections, cavities or the like, which complement each other to form a latchable connection.

It is also possible that at least one spacer device has at least one tab, the tab being suitable and configured to interlock with the support segment and in particular with an undercut of the support segment. In this way, the spacer device can be mounted, by interlocking or clip-on, in an economical way and without difficulties in the support segment. At least one spacer device must be configured as a single part and / or as a bent sheet metal part. Such a variant of configuration can be manufactured particularly favorably and is furthermore stable and heat resistant. The spacer device is a cold formed, stamped sheet metal part. In this regard, the spacer device can be configured with at least one elastic tab or include one such. The elastic tongue enables a flexible distance between the support segment and the surface component.

Particularly preferably, at least one spacer device is suitable and configured for centering at least two surface components. The spacer device is correspondingly adapted for this. For example, the spacer device may have an extended spring element and / or an enlarged flexible area for this. It is also possible that the spacer device has two or more spring elements and / or two or more flexible zones. In such a configuration variant fewer spacer devices are needed, thus saving material and mounting costs.

In a particularly preferred refinement, the door system has at least three, four, or more surface components. At least two spacer devices are then suitable and configured for centering at least two surface components and in particular both central surface components. Such a door system is advantageous, for example, in an apparatus with a pyrolysis function, since a door system with four surface components makes particularly good thermal insulation possible. In this way, even during pyrolysis operation, a non-hazardous temperature can be guaranteed in the outermost glass.

In advantageous configuration variants the receptacle may include at least three or more support segments. For example, the receptacle may have two lateral support segments and a lower one. Four or more support segments are also possible, which can house and / or support at least one surface component as a frame. The support segments can also be round or oval or the like and be arranged at least around a surface component. The support segments can then be segments of a support module, but also of two support modules or of several support modules.

Other advantages and possibilities of application of the present invention result from the description of an exemplary embodiment, which will be described below with reference to the attached figures.

In the figures they show:

1 shows a schematic representation of a domestic appliance corresponding to the invention in perspective view;

Figure 2 a door system with two surface components in perspective view;

Figure 3 a spacer device in perspective view;

4 shows a support segment with the spacer device of FIG. 3 in perspective view; Figure 5 a door system with three surface components in perspective view and

Figure 6 shows the door system of Figure 5 in a side view.

FIG. 1 shows a household appliance 1 corresponding to the invention, configured here as a cooking appliance 2. Using a control unit 12, a user can operate the cooking appliance 2. The cooking appliance has a treatment chamber 3 and an opening charging 4, which can be closed by a door system 5. The treatment chamber is here made as a cooking chamber 13, which can be heated by at least one heat source 14, such as a circulating air heat source . Other heat sources 14 may be provided, such as an upper heat heater and a lower heat heater, as well as a microwave heat source and the like.

The door system 5 is here a door 15 with a multi-crystal structure and here has a total of three surface components 8, 18, 28, configured as crystals 20, 21, 22. The central glass 21 and the inner glass 22 facing the camera Cookers 13 are oriented here by two centrally opposed flexible spacer devices 9 between two opposite support segments 7. In such an arrangement a uniform gap results between the support segments 7 and the central and inner windows 21, 22. The flexible spacer device 9 can then compensate for size differences, for example due to thermal expansion or manufacturing tolerances and always guarantees an essentially uniform distance between the crystals 21, 22 and the support segment 7. In this way thermal bridges are reduced. Even at very high temperatures in the firing chamber 13, for example, during pyrolysis operation, a non-dangerous temperature is reached in the outer glass 20 and no one can be injured in the closed door system.

A door system 5 is shown in FIG. 2, which includes a receptacle 6 and here two surface components 8, 18. Then a first surface component 8 of both surface components 8,18 forms the outer side of the door system 5. On the first surface component 8 the receptacle 6 is fixed and in particular glued. The receptacle 6 is configured here as a frame and includes two facing support segments 7, which in each case constitute a segment of a support module 27 In addition, the receptacle 6 includes two facing support strips 10, of which only the upper support strip 10 is shown here for clarity of the assembly. The support strips are here arranged essentially at right angles to the segments Support 7.

The support segments 7 each have at least one spacer device 9. The spacer device 9 is then interlocked such that it can slide with the support segment 7 and in particular interlocked as described below with regard to the spacer device 9 of the Figure 4. An interlocking connection is especially advantageous, since the spacer device 9, after the interlocking, can be oriented easily and quickly by means of a displacement along the support segment 7 and in particular to be oriented opposite to another spacer 9.

The second surface component 18 is arranged between the support segments 7. The spacer devices 9 then hold the surface component 18 at a minimum distance from the support segments 7. By means of two spacer devices 9 facing each other and provided with at least one element spring 19, 39 the second surface component 18 is oriented centrally between the support segments 7. Slipping of the surface component 18 parallel to the support segments 7 is prevented by the support strips 10 arranged essentially at right angles to to the support segments 7. The support strip 10 has at least one support device 11, which makes possible a spaced arrangement of the surface components 8, 18 relative to each other, thus preventing a thermal bridge between the surface components 8, 18.

Such a variant of configuration with a frame-like receptacle 6 makes possible a stable and economical framing of the second surface component 18. The second surface component 18 is then floatingly supported by the elastic spacer devices 9 and is oriented centered between the support segments 7. It is also possible and preferred that other surface components 18 and 28 and in particular a third and fourth surface components 18, 28 can be accommodated in the receptacle 6.

A single spacer device 9 is shown in FIG. 3. The spacer device 9 is U-shaped and configured such that it can be interlocked on a support segment 7. For this purpose, the spacer device 9 has two appendices 29, which in particular can be interlocked in an undercut 17 of the support segment 7 (see figure 4). The spacer device 9 is formed here in one piece and as a stamped as well as bent sheet metal part and includes two spring elements 19, 39. The spring elements 19, 39 are configured in the form of brackets and are suitable for remote orientation respective surface components 18, 28. By means of the configuration variant with two spring elements 19, 39, only one spacer device 9 can be oriented at the same time to two or more surface components 18, 28.

FIG. 4 shows the spacer device 9 of FIG. 3, which is arranged in a support segment 7. The support segment 7 is here a continuous side segment of a support module 27. The support module 27 is configured here as an extruded profile and has two lateral retention grooves 37. The retention grooves 37 have an undercut 17 and are suitable for interlocking at least one tab 29 of the spacer device 9. The spacer device 9 can thus be fixedly mounted and such that it can sliding along the retention slot 37 in the support segment 7. In this way, any position of the spacer device 9 in the support segment 7 is possible.

Figure 5 shows a door system 5 with three surface components 8, 18, 28. The support slats 10 have been removed for a better view of the assembly. The third surface component 28 is mounted in the receptacle 6 as described above for the second surface component 18. The third surface component 28 is then arranged spaced apart due to the second spring element 39 of the spacer device 9 and essentially centered between the support segments 7. Such a variant configuration with three surface components 8, 18, 28 enables even better thermal insulation. A fourth surface component 8, 18, 28 makes possible, for example, even better thermal insulation for pyrolysis operation.

A side view of the door system 5 of figure 5 is shown in figure 6. Here the central or centered arrangement of the surface components 18, 28 between the support segments 7 can be seen with particular clarity. When the second and / or third surface component 18, 28, for example, for cleaning the receptacle 6, the surface components 18, 28 remain practically automatically centered again after being housed by the spacer device 9. Also in a first assembly By accommodating the surface components 18, 28 during manufacturing, the surface components 18, 28 are oriented to the center by the spacer device 9. No costly manual orientation is needed anymore, thereby saving time and costs during manufacturing.

The flexible and / or spring-like configuration of at least one spacer device 9 guarantees a largely uniform minimum distance from a surface component 18, 28 to the support segments 7, of which there are at least two. The surface component 18, 28 is then positioned in particular in the center between at least two support segments 7. The uniform distance is especially advantageous in surface components 18, 28 with thermal insulation function, since the steps of the heat or thermal bridges. Still another advantage is that the surface components 18, 28, even in thermal expansion, as well as when there are different manufacturing tolerances, are almost automatically aligned in the center by the flexible spacer 9. This always results in a uniform distance and good thermal insulation. During assembly of the surface components 18, 28 costly manual orientation is avoided, thus saving costs.

Reference list

1 household appliance

2 cooking appliance

3 treatment chamber

4 loading opening

5 door system

6 receptacle

7 support segment

8 surface component

9 spacer device

10 slat support

11 support device

12 command team

13 cooking chamber

14 heat source

15 door

17 undercut

18 surface component

19 spring element

20 crystal

21 crystal

22 crystal

27 support module

28 surface component

29 appendix

37 retention slot

39 spring element

Claims (7)

1. Household appliance (1), in particular cooking appliance (2) with at least one treatment chamber (3) and a loading opening (4) and at least one door system (5) that closes the loading opening (4) of the treatment chamber (3), wherein the door system (5) has at least one receptacle (6) with at least two support segments (7), the door system (5) including at least two surface components (8, 18, 28) , in particular heat resistant glass plates, which are arranged in the support segments (7), of which there are at least two and the receptacle (6) presenting at least two spacer devices (9), of which at least a spacer device (9) is configured at least in part flexible, to orient at least one of the surface components (8, 18, 28) with respect to at least two of the support segments (7), of which at least There are two, characterized in that at least one of the spacer devices (9) is constituted, at least partially, in a U-shape and such that it can be interlocked with the support segment (7) and is fixed to it so that it can slide and in that the spacer device (9) is made as a single piece and as a stamped as well as bent sheet metal part and including two spring elements (19, 39), which are formed in the form of brackets and are suitable for remotely orienting a respective surface component (18, 28). 2. Household appliance (1) according to the preceding claim, characterized in that at least one spacer device (9) is configured at least partially rigid. 3. Household appliance (1) according to one of the preceding claims, characterized in that the receptacle (6) includes at least two spacer devices (9) that are at least partially flexible. Household appliance (1) according to one of the preceding claims, characterized in that at least two spacer devices (9) are arranged on opposite sides. Household appliance (1) according to one of the preceding claims, characterized in that at least one spacer device (9) has at least one appendix (29), the appendix (29) being suitable and configured to interlock with the support segment (7) and in particular with an undercut (17) of the segment support (7). Household appliance (1) according to one of the preceding claims, characterized in that the door system (5) has at least three, four or more surface components (8, 18, 28) and at least two spacer devices (9) are suitable and configured for the centering of at least two components of surface (8, 18, 28) and in particular of both central surface components (8, 18, 28). Household appliance (1) according to one of the preceding claims, characterized in that the receptacle (6) has at least three or more support segments (7).