EP2469177A1 - Cooking device - Google Patents

Abstract

The cooking appliance (1) has a cooking chamber (2) and a closing door (3) which closes the cooking chamber. The cooking chamber is heated via a heat source. An electromagnetic passage cross section (20) is extended outwards from the cooking chamber so that the egress of electromagnetic radiation is reduced. The gap (5) between the oven door and opening (6) of cooking chamber is made small.

Description

The present invention relates to a cooking appliance with a heatable cooking chamber and with a door closing the cooking chamber. In this case, a free passage cross-section between the closed cooking chamber door and cooking chamber opening is provided so small that the escape of electromagnetic waves is reduced from the cooking chamber.

Cooking appliances are subject to a constant process of development in order to give the user the greatest possible comfort in the preparation of food. Among other things, cooking appliances are equipped with many supporting functions to facilitate the preparation of food and to improve the result of a cooking process.

For example, as a spit running thermometer have become known, which are offered either as an accessory or even integrated into the device. For example, these can be placed in a large piece of meat to measure the core temperature during preparation. As a result, the desired cooking point can be well adjusted by a user, since, for example, different cooking levels can be distinguished via the core temperature.

In order to provide the measured temperature to a user well and in particular also simply, the temperature can be displayed, for example, on the display of the cooking appliance. For this purpose, a cable may be provided on the temperature spit, which is in communication with the cooking appliance.

Under certain circumstances, a temperature spit connected to a cable on the cooking appliance can restrict the user's ease of use, since the spit can not simply be taken to the sink for cleaning, for example. Furthermore, the cable may be distracting to a user when it is possibly in the introduction or removal of food in or out of the oven in the way.

Therefore, radio sticks have become known that transmit the measured temperature via electromagnetic waves to the cooking appliance. Thereby, the core temperature of a food can be transmitted cordless to a user or displayed on a display of a cooking appliance.

When transmitting by means of electromagnetic waves, however, attention must be paid to the observance of certain limit values, as otherwise other devices may be adversely affected in some cases. In the meantime, wireless data transfer has become an established method whereby many devices use electromagnetic waves. Therefore, such radio sticks must comply with certain standards and legal requirements, so that they are approved for private use.

With the use of radio spits, it may under certain circumstances come to a leakage radiation from the oven, since the baking muffle opening is indeed closed by a door, but there may still escape electromagnetic radiation under certain circumstances.

It is therefore the object of the present invention to provide a cooking appliance provided in which the escape of electromagnetic waves from the oven can be better prevented.

This object is achieved by a cooking appliance with the features of claim 1. Further embodiments will be apparent from the dependent claims and the embodiment.

The cooking appliance according to the invention is designed in particular as an oven and has at least one cooking chamber and at least one door closing the cooking chamber. The at least one cooking chamber can be heated via at least one heating source and can be closed by means of the at least one door closing the cooking chamber. For heating the cooking chamber are in particular upper and / or lower heat, a recirculation mode and / or a grill function. When the cooking chamber door is closed, an electromagnetically effective passage cross-section from the cooking chamber to the outside is provided so small that the emission of electromagnetic radiation is considerably reduced.

The free passage cross-section is in particular designed such that the electromagnetic radiation is considerably reduced in a relevant range. Therefore, in particular frequencies of, for example, wirelessly operated core temperature meters or radio spits can not escape through the free passage cross section from the cooking chamber. In particular, a reduction of the exiting radiation by at least 50%, preferably by 90% and particularly preferably by 99% is advantageous.

Such ausgestaltetes cooking appliance offers many advantages. A significant advantage is that with a cooking appliance according to the invention the escaping electromagnetic radiation, which is generated for example by a radio spit for measuring the core temperature of a food, is significantly reduced. This can be prescribed limits for the exit of electromagnetic waves that are required by certain directives.

In particular, this also prevents leaking electromagnetic waves unwanted influence other devices. Conversely, however, no electromagnetic waves in the relevant area from the outside penetrate into the cooking chamber, whereby a reliable operation of, for example, a radio spit is guaranteed.

The smallest possible free passage cross-section can preferably be achieved in that the gap between the at least one cooking chamber door and the cooking chamber opening of the at least one cooking chamber is made as small as possible. In particular, gaps of less than 5 mm and preferably less than 1 mm are advantageous. Other smaller and larger gaps are useful and conceivable depending on the relevant wavelength.

A possibly larger free passage cross-section is particularly preferably reduced by means of a sealing device suitable for this purpose. For this purpose, at least one sealing device can be provided in the gap between the at least one cooking chamber door and the cooking chamber opening of the at least one cooking chamber, which reduces the effective passage cross-section. The sealing device is then preferably suitable and trained to prevent electromagnetic waves.

In preferred embodiments, the at least one sealing device consists at least partially of an electrically conductive material. As a result, the leakage of electromagnetic radiation can be effectively reduced or even completely prevented.

Preferably, the sealing device is at least partially coated with an electrically conductive material and / or vapor-deposited. Even by such a configured sealing device electromagnetic waves are reliably prevented from exiting the cooking chamber.

In particularly preferred embodiments, the sealing device consists at least partially of conductive silicone. This is a very advantageous embodiment, since already installed silicone gaskets can be easily replaced by a conductive silicone gasket.

The execution of the sealing device as a spring plate seal is preferred. Also, such a seal can be effectively used against the escape of electromagnetic radiation from the oven.

Particularly preferably, the sealing device can also consist of at least one sealing unit and at least one electrically conductive unit. For example, as a sealing unit, a glass silk hose may be used, in which, for example, a wire mesh as electrically conductive unit is arranged. The glass silk hose is also particularly suitable for very high temperatures, such as those produced during pyrolysis.

Other electrically conductive units can be advantageously used for such a sealing unit. For example, a spring, a Drahtgewirk, a conductive rod or electrically conductive silicone is preferably suitable.

Further advantages and features of the present invention will become apparent from the embodiment, which will be explained below with reference to the accompanying figures.

Fig. 1:

eine stark schematische perspektivische Ansicht eines Gargeräts als Einzelgerät;

Fig. 2:

eine stark schematische perspektivische Ansicht eines Gargeräts als Einbaugerät;

Fig. 3:

eine stark schematische Schnittansicht durch ein erfindungsgemäßes Gargerät;

Fig. 4:

eine schematische Ansicht des Bereichs des Garraumes eines Gargerätes;;

Fig. 5:

eine starke schematische Ansicht einer Dichtungseinrichtung;

Fig. 6:

eine andere schematisch dargestellte Ausführung einer Dichtungseinrichtung; und

Fig. 7:

eine Detailansicht einer als Federblechdichtung ausgeführte Dichtungseinrichtung an einem erfindungsgemäßen Gargerät in stark schematischer Darstellung.

In the figures show:

Fig. 1:

a highly schematic perspective view of a cooking appliance as a single unit;

Fig. 2:

a highly schematic perspective view of a cooking appliance as a built-in device;

3:

a highly schematic sectional view through a cooking appliance according to the invention;

4:

a schematic view of the area of the cooking chamber of a cooking appliance;

Fig. 5:

a strong schematic view of a sealing device;

Fig. 6:

another schematically illustrated embodiment of a sealing device; and

Fig. 7:

a detailed view of a sealing device designed as a spring plate seal on a cooking appliance according to the invention in a highly schematic representation.

In FIG. 1 is a cooking appliance 1 according to the invention is shown in a strong perspective view, which is designed here as a hearth 40 or as a standalone unit. The cooking appliance 1 has a housing 13, on which a cooking chamber 2 is provided, which can be closed with a door 3. When the door 3 is open, a food can be introduced into the cooking chamber 2. In the cooking chamber 2, the food can then be cooked by means of a heating source 4. This is not particularly suitable for the use of, for example, top and / or bottom heat, a convection or a grill function.

On the stove 40, a hob 14 is arranged, which is divided into several cooking zones 15. You can make the desired settings for cooking over some controls 16 on a control panel 17. The control panel 17 may also include a display device such as a display on which the current state of the cooking appliance 1 and the set parameters can be displayed.

In FIG. 2 1 shows a cooking appliance 1 in a perspective schematic view, which in the present case is designed as a baking oven 10 suitable for installation. The cooking chamber 11 immediate housing 13 can in turn be surrounded by a furniture body, not shown here. In FIG. 2 the cooking appliance 1 is shown with half open door 3. Above the cooking chamber 2 is space for a not visible here control device 18. The electronics of the controller 18 is cooled by a device cooling 19.

FIG. 3 shows the very schematically represented section through an inventive cooking appliance 1, which is again designed as a baking oven 10. In the embodiment shown here, the free passage cross-section 20 is formed so small that the escape of electromagnetic waves from the cooking chamber 2 is significantly reduced. For this purpose, the gap 5 between the closed cooking chamber door 3 and the cooking chamber opening 6 is made so small that electromagnetic waves that occur, for example, when using radio skewers to determine the core temperature of food, are effectively prevented from exiting the cooking chamber 2.

As a result, prescribed limits can be well met, so that other devices that respond to electromagnetic waves are not affected by the radio spit in the cooking chamber 2.

Under certain circumstances, the gap 5 between the closed cooking chamber door 3 and the cooking chamber opening 6 can not be made small enough or devices with a large gap 5 for the relevant wavelength should be retrofitted so that electromagnetic waves can not escape from the cooking chamber 2. In particular, a sealing device 30 is then suitable for reducing the gap 5 such that the effective passage cross-section 20 is reduced to a suitable size.

For this purpose, the sealing device 30 should preferably consist of a conductive material 7. In FIG. 4 a section of the region of the open cooking chamber opening 6 of a baking oven 10 according to the invention is shown schematically. To the cooking chamber opening 6 extends in the embodiment shown here along the oven front 21, a sealing device 30 made of conductive silicone. When the door 3 is closed, the gap 5 is reduced by this sealing device 30 to a free passage cross section 20, which is so small that electromagnetic waves can no longer escape from the cooking chamber 2.

The design of the sealing device 30 made of conductive silicone 8 is particularly suitable for retrofitting devices with conventional silicone gaskets to prevent the escape of electromagnetic waves even with such devices.

It is also possible to produce a sealing device 30 of non-conductive material, which is then subsequently coated with a conductive material 7 and / or vapor-deposited.

In FIG. 5 a schematic longitudinal sectional view through a sealing device 30 is shown, which includes a sealing unit 11 and your electrically conductive unit 12. In the exemplary embodiment shown here, the sealing unit 11 consists of a glass fiber tube 23. Such a pronounced sealing unit 11 is also suitable in particular for very high temperatures, such as occur, for example, in pyrolysis. Other materials are suitable for the sealing unit 11. The electrically conductive unit 12 consists in the example shown here of a spring 22 which is made of electrically conductive material 7.

A cross-sectional view through a differently embodied sealing device 30 is shown in FIG FIG. 6 shown. In this case, the sealing unit 11 again consists of a glass fiber tube 23. However, the electrically conductive unit 12 is realized by means of a conductive rod 24, which is seconded in the glass fiber tube 23. In order to achieve a suitable shape of this sealing device 30, the rod 24 can in particular also be made of a conductive material 7 that can be bent or shaped into a corresponding shape.

Another embodiment of a sealing device 30 for reducing the in FIG. 1 shown gap 5 is in FIG. 7 displayed. In this case, a spring plate seal 9 is provided as sealing means 30, which are arranged in a groove 25 in the front 21 of the cooking appliance 1. For this purpose, the spring plate seal 9 in the example shown here fastening means 26. The gap 5 between the closed door 3 and the cooking chamber opening 6 is then effectively sealed by the spring plate seal 9 against the escape of electromagnetic waves.

It is within the skill of one skilled in the art to modify the described embodiments in a manner not shown in order to achieve the effects described, without departing from the scope of the invention.

LIST OF REFERENCE NUMBERS

1

Cooking appliance

2

oven

3

door

4

heating source

5

gap

6

cooking compartment

7

electrically conductive material

8th

conductive silicone

9

Spring plate seal

10

oven

11

sealing unit

12

electrically conductive unit

13

casing

14

hob

15

cooking zone

16

operating element

17

control panel

18

control device

19

cooling equipment

20

Passage cross section

21

front

22

feather

23

Glass fiber tubing

24

Rod

25

groove

26

fastener

30

seal means

40

stove

Claims (8)

Cooking appliance (1), in particular oven (10), with at least one cooking chamber (2) and at least one door (3) closing the cooking chamber (2), wherein the at least one cooking chamber (2) can be heated via at least one heating source (4) and by means of the at least one door (3) closing the cooking chamber (2),
characterized,
that when the cooking chamber door (3) is closed, an electromagnetically effective passage cross-section (20) out of the cooking chamber (2) is designed to be so small outwards that the emission of electromagnetic radiation is considerably reduced. Cooking appliance (1) according to claim 1, characterized in that the gap (5) between the at least one cooking chamber door (3) and the cooking chamber opening (6) of the at least one cooking chamber (2) is made as small as possible. Cooking appliance (1) according to claim 1, characterized in that in the gap (5) between the at least one cooking chamber door (3) and the cooking chamber opening (6) of the at least one cooking chamber (2) at least one sealing device (30) is provided which the reduced effective passage cross-section (20) and is suitable and designed to prevent electromagnetic waves. Cooking appliance (1) according to the preceding claim, characterized in that the at least one sealing device (30) consists at least partially of an electrically conductive material (7). Cooking appliance according to claim 3 or 5, characterized in that the sealing device (30) is at least partially coated with an electrically conductive material (7) and / or vapor-deposited. Cooking appliance (1) according to claim 4 or 5, characterized in that the sealing device (30) consists at least partially of conductive silicone (8). Cooking appliance (1) according to one of claims 3 to 6, characterized in that the sealing device (30) is designed as a spring plate seal (9). Cooking appliance (1) according to one of claims 3 - 7, characterized in that the sealing device (30) consists of at least one sealing unit (11) and an electrically conductive unit (12).

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