EP3708911B1 - Cooking appliance, comprising a cooking chamber and a camera for creating internal images of the cooking space - Google Patents

Cooking appliance, comprising a cooking chamber and a camera for creating internal images of the cooking space Download PDF

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Publication number
EP3708911B1
EP3708911B1 EP20156888.8A EP20156888A EP3708911B1 EP 3708911 B1 EP3708911 B1 EP 3708911B1 EP 20156888 A EP20156888 A EP 20156888A EP 3708911 B1 EP3708911 B1 EP 3708911B1
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EP
European Patent Office
Prior art keywords
camera
glass pane
channel
cooking appliance
channel portion
Prior art date
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Active
Application number
EP20156888.8A
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German (de)
French (fr)
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EP3708911A1 (en
Inventor
Jürgen Scharmann
Julia Ten Haaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
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Miele und Cie KG
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Publication of EP3708911A1 publication Critical patent/EP3708911A1/en
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Publication of EP3708911B1 publication Critical patent/EP3708911B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens

Definitions

  • the invention relates to a cooking appliance of the type mentioned in the preamble of claim 1, comprising a housing in which a cooking space delimited by a housing wall is arranged, electronics arranged on the housing, a camera arranged on the housing and connected to the electronics in a signal-transmitting manner with a the camera to the camera channel that connects the cooking chamber in an image-conducting manner to take pictures of the interior of the cooking chamber, in the housing wall an opening for the camera that is covered by a first glass pane arrangement, a first glass pane arrangement formed at least by a first glass pane, and a first seal arranged between the first glass pane arrangement and the housing wall , by means of which the opening for the camera is sealed in a substantially gas-tight manner.
  • the DE 10 2016 124 312 A1 a cooking appliance with a housing in which a cooking space delimited by a housing wall is arranged, and a camera, wherein an opening for the camera is formed in the housing wall and is at least partially covered by a lens, and the camera is designed to take interior photographs of the cooking space and is arranged on the housing.
  • the opening is closed in an essentially gas-tight manner by means of the lens and a seal arranged between the lens and the housing wall.
  • the WO 2017/044876 A1 discloses a cooking appliance with a housing and a cooking chamber, on the interior of which a camera is arranged.
  • the camera is placed in a camera channel, which is covered by double glazing towards the cooking chamber.
  • the space between the two panes of double glazing can be vacuumed.
  • a cooking appliance in which the cooking chamber is equipped with an opening towards the front which can be closed by a door.
  • a camera is installed in the door.
  • the door is provided with a space in which the camera is arranged.
  • the camera is covered by a first pane, while the door itself is completely covered with a pane of glass toward the cooking chamber.
  • the space between the two panes can be sealed watertight and dustproof.
  • one from the WO 2019/101529 A1 known oven has an oven with insulation, the inside of the oven enclosing a cooking chamber.
  • a camera is directed into the cooking chamber through an opening in the oven.
  • the opening is covered by a first glass viewing panel.
  • the camera itself is arranged in a sensor housing in which there are two further panes between the camera and the end of the sensor housing on the cooking chamber side.
  • the JP 2008 308 659 A1 describes the production of a hydrophilic film and the coating of a component, for example a transparent glass substrate, with such a film.
  • Float glass can also be used as the glass substrate.
  • the invention therefore faces the problem of specifying a cooking device with a cooking chamber and a camera for taking interior shots of the cooking chamber, in which production and assembly are simplified.
  • the camera channel has a first channel section and a second channel section, the first channel section extending from the first glass pane arrangement to a second glass pane arrangement having at least one second glass pane and the second channel section extending from the second glass pane arrangement to the camera, and wherein the first channel section and the second channel section, which is separated from the first channel section by means of the second glass pane arrangement, are each sealed in an essentially gas-tight manner with respect to an area surrounding the camera channel.
  • the first channel section and the second channel section of the camera channel are designed as separate structural units, the first and the second channel section being connected to one another in an essentially gas-tight manner by means of at least one second seal.
  • the second channel section of the camera channel is at least partially designed as a silicone channel.
  • the advantage that can be achieved with the invention is, in particular, that with the cooking appliance according to the invention, high-quality interior shots of the cooking chamber are made possible even at higher cooking chamber temperatures.
  • Higher cooking chamber temperatures are present, for example, in cooking appliances designed as pyrolysis appliances when they are operated in their pyrolysis mode.
  • good sealing of the camera duct from the environment surrounding the camera duct for example thermal insulation built into the housing and surrounding the cooking chamber and/or air ducting for active or passive cooling of the electronics of the cooking appliance, is guaranteed.
  • One is a separate manufacture of the two Channel sections allowed.
  • the installation of the camera channel is made easier.
  • the second channel section of the camera channel is implemented in a particularly flexible manner. Accordingly, the handling and assembly of the second channel section is simplified. Silicone also has high temperature resistance.
  • the second glass pane arrangement which separates the first channel section from the second channel section, enables a greater reduction in the temperature on the camera. Accordingly, it is possible by means of the invention to keep the temperature on the camera in a temperature range specified for conventional cameras, for example, even at higher cooking chamber temperatures.
  • the invention can advantageously be used both in cooking appliances designed as household appliances and in cooking appliances designed as commercial appliances.
  • the first glass pane arrangement can have only a single first glass pane or a plurality of first glass panes, wherein the plurality of first glass panes can be separated from one another, for example by means of a thermally insulating intermediate layer, in order to be able to achieve stronger thermal insulation.
  • the intermediate layer can be formed, for example, as an air layer or another thermally insulating gas layer.
  • the second glass pane arrangement it is conceivable that at least one of the at least one first glass pane and/or at least one of the at least one second glass pane is designed as a lens, for example a converging lens.
  • the first seal can be freely selected in terms of type, function, material, arrangement and number within wide, suitable limits.
  • An advantageous development of the cooking appliance according to the invention provides that the first seal has a retaining plate and a spring plate, the first glass pane arrangement being resiliently clamped between the retaining plate and the spring plate.
  • the first seal is implemented in a structurally simple and robust manner.
  • this design of the first seal is also suitable for particularly high cooking chamber temperatures, for example in pyrolysis devices during pyrolysis operation.
  • the first glass pane arrangement can in each case indirectly or be spring-loaded directly between the retaining plate and the spring plate.
  • an additional sealing component is arranged between the retaining plate and the first glass pane arrangement. It is also possible that a further additional sealing component is arranged between the spring plate and the housing wall.
  • the additional sealing component and/or the further additional sealing component are thus designed as part of the first seal.
  • the additional sealing component and the further additional sealing component can each be designed as a flat gasket made of graphite or mica, for example. Due to the high temperature resistance of these materials, such seals are also suitable for very high cooking chamber temperatures, such as can occur with pyrolysis devices, for example. Furthermore, such plate-like sealing materials can be cut into all conceivable geometries as desired.
  • a further advantageous development of the cooking appliance according to the invention provides that at least one of the at least one first glass pane is designed as a borosilicate glass, preferably as a borosilicate glass coated with at least one coating that repels IR radiation.
  • this at least one first glass pane and thus the first glass pane arrangement can also be used at particularly high cooking chamber temperatures.
  • the borosilicate glass additionally has at least one coating that repels IR radiation, a further increase in the thermal insulation achieved by means of the first glass pane arrangement is made possible.
  • IR radiation is the abbreviation of infrared radiation, i.e. radiation in the infrared range.
  • At least one of the at least one second glass pane is designed as a float glass, preferably as a float glass coated with at least one coating that repels IR radiation.
  • this at least one second glass pane and thus the second glass pane arrangement can be implemented cost-effectively.
  • the preferred embodiment, according to which the float glass additionally has at least one coating that repels IR radiation enables a further increase in the thermal insulation achieved by means of the second glass pane arrangement.
  • Float glass is also known as green glass.
  • the design of the camera channel having the first channel section and the second channel section can be freely selected within wide suitable limits in terms of type, dimensioning, connection of the two channel sections and arrangement.
  • the material can also be freely selected for the first channel section.
  • a particularly advantageous development of the cooking appliance according to the invention provides that the first seal has a temperature range of use up to 500°C and/or the second seal has a temperature range of use of up to 250°C. In this way, the cooking appliance according to the invention can also be used at the highest cooking chamber temperatures that are reached in the cooking chamber with conventional cooking appliances.
  • At least one of the at least one second seal is designed as a glass fiber seal.
  • Glass fiber gaskets are suitable for high temperature applications and are available in a variety of designs for different applications.
  • the second glass pane arrangement is attached to the second channel section.
  • the attachment of the second glass pane arrangement is made possible in a particularly simple manner.
  • the second glass pane arrangement is held by means of a second channel section that is at least partially designed as a silicone channel.
  • the arrangement of the camera channel on the housing of the cooking appliance can be freely selected within wide, suitable limits.
  • the camera channel and thus the opening in the housing wall can be arranged in a central area of the housing wall, so that the interior of the cooking chamber can be captured particularly advantageously by the camera.
  • the camera channel interacts with an opening in the housing wall, which is used for cooking space lighting in other cooking appliance models. Accordingly, the cooking appliance according to the invention can largely be produced with the tools used for these other cooking appliance models.
  • a further advantageous development of the cooking appliance according to the invention provides that the first channel section is arranged in a region of the housing in which thermal insulation of the cooking chamber is arranged. As a result, the thermal insulation of the first duct section is further improved without additional components being required for this purpose.
  • a particularly advantageous development of the cooking appliance according to the invention provides that the second duct section is arranged in an area of the housing in which an air duct for cooling the electronics of the cooking appliance is arranged.
  • the second channel section and thus also the immediate vicinity of the camera by means of Air duct can be actively cooled, so that the thermal load on the second duct section and thus in particular on the camera due to high temperatures is further reduced.
  • the camera is arranged on a printed circuit board of the electronics. This simplifies the design and circuitry of the camera. If the electronics are actively or passively cooled, as is usual in cooking appliances with a cooking chamber, the camera, for example a camera chip, is also cooled. Accordingly, the thermal load on the camera is further reduced.
  • the first channel section and the second channel section of the camera channel are of modular design such that the first channel section can be assembled when the housing wall is assembled and the second channel section can be assembled when the electronics are assembled.
  • the assembly of the camera channel is further simplified. For example, it is possible to first assemble the first duct section with the housing wall in a first production step at a first production station and the second duct section with the electronics in a second production step at a second production station, and then the first and the second duct section during assembly to connect the electronics to the rest of the cooking appliance with the housing wall.
  • a cooking appliance according to the invention is shown as an example.
  • the cooking appliance is designed here as an oven and has a housing 2 in which a cooking chamber 6 delimited by a housing wall 4 is arranged.
  • the baking oven also has a camera 8 designed as a 2D fixed-focus camera, with an opening 12 for the camera 8 being formed in the housing wall 4 and covered by a first glass pane arrangement 10 .
  • the first glass pane arrangement 10 has only one single first glass pane 11, the first glass pane 11 as a 4 mm thick borosilicate glass pane with a coating applied to a side of the glass pane 11 facing the cooking chamber 6 that reflects IR radiation.
  • the coating of the first glass pane 11 reflecting IR radiation is in FIG 1 not shown.
  • a cooking chamber lighting designed as an oven lamp is arranged in the cooking chamber 6 .
  • the oven lamp serves here at the same time as camera lighting and is also not shown. Accordingly, the camera 8 in the present embodiment can be constructed more simply.
  • the camera 8 is designed to take pictures of the interior of the cooking chamber 6 and is arranged accordingly on the housing 2 . Since the cooking chamber 6 is relatively wide and flat, a lens 14 of the camera 8 has a correspondingly large opening angle on the object side.
  • the opening 12 is closed by the first glass pane arrangement 10, namely the first glass pane 11, and a first seal 18 arranged between the glass pane arrangement 10 and a cooking chamber ceiling 16 of the housing wall 4 in a substantially gas-tight manner.
  • the first seal 18 has a retaining plate 20 and a spring plate 22 , the first glass pane arrangement 10 being resiliently clamped between the retaining plate 20 and the spring plate 22 .
  • the retaining plate 20 and the spring plate 22 are each formed like a frame in order to enable an image-conducting connection through the glass pane arrangement 10 .
  • the assembly formed from the retaining plate 20, the spring plate 22 and the glass pane arrangement 10 is screwed to the housing wall 4 by means of fastening screws 24.
  • the aforementioned subassembly is designed and arranged in such a way that it is coordinated with one another in such a way that by fastening this subassembly to the housing wall 4 by means of the fastening screws 24, on the one hand, the retaining plate 20 and the spring plate 22 are tight to the glass pane arrangement 10 and, on the other hand, the assembly formed by the spring plate 22 and the glass pane arrangement 10 rests tightly against the cooking chamber ceiling 16 .
  • the first seal 18, which has the retaining plate 20 and the spring plate 22, is designed to be suitable for use in a temperature range of up to 500.degree.
  • first seal 18 protects the camera 8 from substances contained in the vapors and from the high temperatures occurring, for example, during the cooking process in the cooking chamber 6, which is explained in more detail below.
  • the cooking appliance is equipped as a self-cleaning cooking appliance, i.e. with a pyrolysis function. Very high temperatures result in pyrolysis operation.
  • the cooking chamber 6 is thermally insulated from the environment in a manner known to those skilled in the art by a substantially circumferential insulating layer 26 .
  • the insulating layer 26 is in the 1 only partially shown.
  • the opening 12 in the cooking chamber wall 4 is kept as small as possible in order to have to break through the insulation layer 26 as little as possible at this point.
  • the opening 12 is in the 1 shown enlarged for the sake of clarity.
  • the camera 8 is arranged further away from the cooking chamber ceiling 4 and thus from the cooking chamber 6 in a cooler area of the housing 2.
  • the opening 12 is relatively small, the opening 12 can be arranged in the region of a top heating element, not shown, in the cooking chamber wall 4 without the opening 12 and the top heating element having a negative effect on one another.
  • the top heater does not appear in the images captured by the camera 8.
  • the cooking chamber lighting is also arranged in the cooking chamber 6 in such a way that there is no undesired interaction between the cooking chamber lighting and, for example, the aforementioned upper heating element.
  • the camera 8 is on a printed circuit board 28 of electronics 30 of the cooking appliance, in the plane of the drawing 1 above the opening 12.
  • the cooking appliance has a camera channel 32 in order to connect the camera 8 arranged on the electronics 30 to the cooking chamber 6 in an image-conducting manner.
  • the camera duct 32 has a first duct section 34 and a second duct section 36, the first duct section 34 extending from the first glass pane arrangement 10 to a second glass pane arrangement 38 and the second duct section 36 extending from the second glass pane arrangement 38 to the camera 8.
  • the second glass pane arrangement 38 has a single second glass pane 40, the second glass pane 40 being designed as a 4 mm thick float glass coated with at least one coating that reflects IR radiation.
  • the first channel section 34 of the camera channel 32 is formed from a fold 42 of the housing wall 4 .
  • the second channel section 36 of the camera channel 32 is made of silicone and is therefore designed as a silicone channel.
  • the second glass pane arrangement 38 is held on the second channel section 36, that is to say fastened.
  • the second channel section 36 designed as a silicone channel has a circumferential groove 44 at a free end of the second channel section 36 facing the cooking chamber 6, by means of which the second channel section 36 encloses the second glass pane arrangement 38, namely the second glass pane 40.
  • the second channel section 36 is firmly and gas-tightly connected to the electronics 8 with a free end of the second channel section 36 facing the electronics 8 .
  • first channel section 34 and the second channel section 36 of the camera channel 32 are designed as separate structural units, the first and the second channel section 34, 36 being connected to one another in a gas-tight manner by means of a second seal 46.
  • the first duct section 34 and the second duct section 36 separated from the first duct section 34 by the second glass pane arrangement 38 are thus sealed in an essentially gas-tight manner with respect to the surroundings of the camera duct 32 .
  • the second seal 46 is designed as a glass fiber seal and is suitable for a temperature range of up to 250°C.
  • the first channel section 34 of the camera channel 32 is arranged in a region of the housing 2 in which the insulating layer 26, ie the thermal insulation of the cooking chamber 6, is arranged.
  • the second duct section 36 of the camera duct 32 is arranged in a region of the housing 2 in which an air duct 48 designed as an air duct is arranged for actively cooling the electronics 8 of the cooking appliance.
  • the camera 8 is thus in heat-transfer connection with the cooling air guided in the air duct 48 .
  • the air duct 48 is sealed against the environment in an essentially airtight manner by means of a third seal 50 made of silicone.
  • the air duct 48 of the cooking appliance is used to suck the vapors produced during cooking processes in the cooking chamber 6 out of the cooking chamber 6 and to discharge them into the open air.
  • the vapor/air mixture is guided in the air duct 48 formed in the housing 2 .
  • the cooking appliance, in particular the electronics 8 of the cooking appliance, is also cooled in this way.
  • the air duct 48 and the third seal 50 do not directly adjoin the second duct section 36 of the camera duct 32 .
  • the individual components of the cooking appliance according to the invention are partially spaced from each other in the 1 shown; see for example the distance between the Insulation layer 26 and the housing wall 4 or the air duct 48. This is only for a better overview.
  • the components of the cooking appliance according to the invention are connected to one another in a manner known to those skilled in the art, unless explicitly stated otherwise using the exemplary embodiment.
  • first channel section 34 and the second channel section 36 of the camera channel 32 are designed as separate structural units, the first and the second channel section 34, 36 being connected to one another in an essentially gas-tight manner by means of the second seal 46.
  • first channel section 34 and the second channel section 36 of the camera channel 32 are of modular design such that the first channel section 34 can be installed when the housing wall 4 is assembled and the second channel section 36 can be assembled when the electronics 8 are assembled.
  • the following temperature distribution results, for example, with regard to camera channel 32:
  • the first glass pane 11 of the first glass pane arrangement 10 reaches about 430° C. on the side facing the cooking chamber 6 and about 350° C. on the side of the first glass pane 11 facing away from the cooking chamber 6 .
  • the temperature of the second glass pane 40 of the second glass pane arrangement 38 is still about 180° C. to about 200° C. on the side facing the cooking chamber 6
  • the temperature on the lens 14 of the camera 8 is about 110° C.
  • the temperature at the end of the camera 8 facing the electronics 30 is only about 85° C., so that a commercially available standard camera can be used as the camera 8 in the present exemplary embodiment of the cooking appliance according to the invention. Accordingly, the invention enables cost-effective production of the cooking appliance according to the invention.
  • the embodiment according to 2 is essentially identical to the embodiment according to FIG 1 , so that in principle reference can be made to the above statements. Accordingly, the embodiment according to the 2 only to the extent of the differences from the embodiment according to FIG 1 explained below.
  • the same or equivalent components are in the 1 and 2 provided with the same reference numbers.
  • the first seal 18 has an additional sealing component 21 and a further additional sealing component 23 in addition to the holding plate 20 and the spring plate 22 .
  • the additional sealing component 21 is arranged between the holding plate 20 and the first glass pane arrangement 10 .
  • the further additional sealing component 23 is arranged between the spring plate 22 and the cooking chamber ceiling 16 of the housing wall 4 , the further additional sealing component 23 being arranged on the side of the fastening screws 24 facing the camera channel 32 .
  • the additional sealing component 21 and the further additional sealing component 23 are each designed as a frame-like flat gasket made of graphite or mica.
  • the invention is not limited to the present embodiments.
  • teaching according to the invention can also be used advantageously in other cooking devices with a cooking chamber.
  • the camera can also be designed as a plenoptic camera, TOF camera or stereo camera, ie using 3D technology. Cameras designed as thermal imaging cameras are also conceivable. In addition to single images, the recording of image sequences and moving images is also possible.
  • the first glass pane arrangement, the first seal, the second glass pane arrangement and the second seal can be designed and arranged in a way that is suitably coordinated with one another, so that the invention can be used advantageously in a large number of conceivable applications.
  • a first glass pane arrangement with only a single first glass pane a plurality of first glass panes each separated by a thermally insulating intermediate space can be used.
  • the intermediate space could be filled with air or with another medium in order to achieve thermal insulation between the individual first glass panes. Accordingly, the thickness of the individual first glass pane could be reduced in comparison to a single first glass pane.
  • the second glass pane arrangement instead of a first glass pane arrangement with only a single first glass pane, a plurality of first glass panes each separated by a thermally insulating intermediate space can be used.
  • the intermediate space could be filled with air or with another medium in order to achieve thermal insulation between the individual first glass panes. Accordingly, the thickness of the individual first glass pane could
  • the at least one first glass pane and/or the at least one second glass pane is not or only partially coated with a coating that reflects IR radiation.
  • a coating that reflects IR radiation can also be applied to both flat sides of the respective glass pane or only to one of the two flat sides.
  • At least one first glass pane of the first glass pane arrangement can be used as one be formed converging lens.
  • the converging lens widens the beam path of the light through the opening. Despite the small opening, this enables the cooking chamber 6 to be shown completely in the essential areas on the images recorded with the camera. This is also possible with a reduced object-side aperture angle of the camera lens.
  • the angle of view can thus be increased from, for example, approximately 50° to, for example, approximately 110°.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Description

Die Erfindung betrifft ein Gargerät der im Oberbegriff des Patentanspruchs 1 genannten Art, umfassend ein Gehäuse, in dem ein durch eine Gehäusewand begrenzter Garraum angeordnet ist, eine an dem Gehäuse angeordnete Elektronik, eine an dem Gehäuse angeordnete und mit der Elektronik signalübertragend verbundene Kamera mit einem die Kamera mit dem Garraum bildleitend verbindenden Kamerakanal zur Erstellung von Innenaufnahmen des Garraums, in der Gehäusewand eine durch eine erste Glasscheibenanordnung verdeckte Öffnung für die Kamera, eine mindestens durch eine erste Glasscheibe gebildete erste Glasscheibenanordnung und eine zwischen der ersten Glasscheibenanordnung und der Gehäusewand angeordnete ersten Dichtung, mittels der die Öffnung für die Kamera im Wesentlichen gasdicht verschlossen ist.The invention relates to a cooking appliance of the type mentioned in the preamble of claim 1, comprising a housing in which a cooking space delimited by a housing wall is arranged, electronics arranged on the housing, a camera arranged on the housing and connected to the electronics in a signal-transmitting manner with a the camera to the camera channel that connects the cooking chamber in an image-conducting manner to take pictures of the interior of the cooking chamber, in the housing wall an opening for the camera that is covered by a first glass pane arrangement, a first glass pane arrangement formed at least by a first glass pane, and a first seal arranged between the first glass pane arrangement and the housing wall , by means of which the opening for the camera is sealed in a substantially gas-tight manner.

Derartige Gargeräte mit Garraum sind aus dem Stand der Technik bereits bekannt.Such cooking devices with a cooking chamber are already known from the prior art.

Beispielsweise zeigt die DE 10 2016 124 312 A1 ein Gargerät mit einem Gehäuse, in dem ein durch eine Gehäusewand begrenzter Garraum angeordnet ist, und einer Kamera, wobei in der Gehäusewand eine durch eine Linse zumindest teilweise verdeckte Öffnung für die Kamera ausgebildet ist, und wobei die Kamera zur Erstellung von Innenaufnahmen des Garraums ausgebildet und an dem Gehäuse angeordnet ist. Die Öffnung ist mittels der Linse und einer zwischen der Linse und der Gehäusewand angeordneten Dichtung im Wesentlichen gasdicht verschlossen.For example, the DE 10 2016 124 312 A1 a cooking appliance with a housing in which a cooking space delimited by a housing wall is arranged, and a camera, wherein an opening for the camera is formed in the housing wall and is at least partially covered by a lens, and the camera is designed to take interior photographs of the cooking space and is arranged on the housing. The opening is closed in an essentially gas-tight manner by means of the lens and a seal arranged between the lens and the housing wall.

Die WO 2017/044876 A1 offenbart ein Gargerät mit einem Gehäuse und einem Garraum, an dessen Innenraum eine Kamera angeordnet ist. Die Kamera ist in einem Kamerakanal platziert, der zum Garraum hin mit durch eine Doppelverglasung abgedeckt ist. Der Zwischenraum zwischen den beiden Scheiben der Doppelverglasung kann vakuumiert sein.the WO 2017/044876 A1 discloses a cooking appliance with a housing and a cooking chamber, on the interior of which a camera is arranged. The camera is placed in a camera channel, which is covered by double glazing towards the cooking chamber. The space between the two panes of double glazing can be vacuumed.

Aus der CN 101 435 601 B ist ein Gargerät bekannt, bei dem der Garraum zur Frontseite hin mit einer Öffnung ausgestattet ist, die durch eine Tür verschlossen werden kann. In der Tür ist eine Kamera angeordnet. Dazu ist die Tür mit einem Raum versehen, in dem die Kamera angeordnet ist. Zum Garraum hin ist die Kamera durch eine erste Scheibe abgedeckt, die Tür selbst ist zum Garraum hin vollflächig mit einer Glasscheibe verkleidet. Der Zwischenraum zwischen den beiden Scheiben kann wasser- und staubdicht verschlossen sein.From the CN 101 435 601 B a cooking appliance is known in which the cooking chamber is equipped with an opening towards the front which can be closed by a door. A camera is installed in the door. For this purpose, the door is provided with a space in which the camera is arranged. Toward the cooking chamber, the camera is covered by a first pane, while the door itself is completely covered with a pane of glass toward the cooking chamber. The space between the two panes can be sealed watertight and dustproof.

Ein aus der WO 2019/101529 A1 bekannter Backofen besitzt ein Backrohr mit einer Isolierung, wobei die Innenseite des Backrohrs einen Garraum umschließt. Durch eine Öffnung im Backrohr ist eine Kamera in den Garraum gerichtet. Die Öffnung ist durch eine erste Sichtscheibe aus Glas abgedeckt. Die Kamera selbst ist in einem Sensorgehäuse angeordnet, in dem sich zwei weitere Scheiben zwischen der Kamera und dem garraumseitigen Ende des Sensorgehäuses befinden.one from the WO 2019/101529 A1 known oven has an oven with insulation, the inside of the oven enclosing a cooking chamber. A camera is directed into the cooking chamber through an opening in the oven. The opening is covered by a first glass viewing panel. The camera itself is arranged in a sensor housing in which there are two further panes between the camera and the end of the sensor housing on the cooking chamber side.

Die JP 2008 308 659 A1 beschreibt die Herstellung eines hydrophilen Films und die Beschichtung eines Bauteils, beispielsweise eines transparenten Glassubstrats mit einem solchen Film. Als Glassubstrat kann auch Floatglas verwendet werden.the JP 2008 308 659 A1 describes the production of a hydrophilic film and the coating of a component, for example a transparent glass substrate, with such a film. Float glass can also be used as the glass substrate.

Der Erfindung stellt sich somit das Problem, ein Gargerät mit einem Garraum und einer Kamera zur Erstellung von Innenaufnahmen des Garraums anzugeben, bei dem die Herstellung und Montage erleichtert sind.The invention therefore faces the problem of specifying a cooking device with a cooking chamber and a camera for taking interior shots of the cooking chamber, in which production and assembly are simplified.

Erfindungsgemäß wird dieses Problem durch ein Gargerät mit den Merkmalen desAccording to the invention, this problem is solved by a cooking appliance with the features of

Patentanspruchs 1 gelöst, wonach der Kamerakanal einen ersten Kanalabschnitt und einen zweiten Kanalabschnitt aufweist, wobei sich der erste Kanalabschnitt von der ersten Glasscheibenanordnung bis zu einer zweiten mindestens eines zweite Glasscheibe aufweisenden Glasscheibenanordnung und sich der zweite Kanalabschnitt von der zweiten Glasscheibenanordnung bis zu der Kamera erstreckt, und wobei der erste Kanalabschnitt und der von dem ersten Kanalabschnitt mittels der zweiten Glasscheibenanordnung getrennte zweite Kanalabschnitt jeweils gegenüber einer Umgebung des Kamerakanals im Wesentlichen gasdicht verschlossen sind. Der erste Kanalabschnitt und der zweite Kanalabschnitt des Kamerakanals sind als separate Baueinheiten ausgebildet, wobei der erste und der zweite Kanalabschnitt mittels mindestens einer zweiten Dichtung miteinander im Wesentlichen gasdicht verbunden sind. Außerdem ist der zweite Kanalabschnitt des Kamerakanals zumindest teilweise als ein Silikonkanal ausgebildet.of claim 1, according to which the camera channel has a first channel section and a second channel section, the first channel section extending from the first glass pane arrangement to a second glass pane arrangement having at least one second glass pane and the second channel section extending from the second glass pane arrangement to the camera, and wherein the first channel section and the second channel section, which is separated from the first channel section by means of the second glass pane arrangement, are each sealed in an essentially gas-tight manner with respect to an area surrounding the camera channel. The first channel section and the second channel section of the camera channel are designed as separate structural units, the first and the second channel section being connected to one another in an essentially gas-tight manner by means of at least one second seal. In addition, the second channel section of the camera channel is at least partially designed as a silicone channel.

Der mit der Erfindung erreichbare Vorteil besteht insbesondere darin, dass bei dem erfindungsgemäßen Gargerät qualitativ gute Innenaufnahmen von dem Garraum auch bei höheren Garraumtemperaturen ermöglicht sind. Höhere Garraumtemperaturen liegen beispielsweise bei als Pyrolysegeräten ausgebildeten Gargeräten vor, wenn diese in deren Pyrolysebetrieb betrieben werden. Bei dem erfindungsgemäßen Gargerät ist nun zum einen eine gute Abdichtung des Kamerakanals gegenüber der den Kamerakanal umgebenden Umgebung, beispielsweise einer in dem Gehäuse verbauten und den Garraum umgebenden thermischen Isolierung und/oder einer Luftführung zur aktiven oder passiven Kühlung der Elektronik des Gargeräts, gewährleistet. Zum einen ist eine separate Herstellung der beiden Kanalabschnitte ermöglicht. Zum anderen ist die Montage des Kamerakanals erleichtert. Außerdem ist der zweite Kanalabschnitt des Kamerakanals auf besonders flexible Art realisiert. Entsprechend vereinfacht sich die Handhabung und die Montage des zweiten Kanalabschnitts. Silikon weist darüber hinaus eine hohe Temperaturbeständigkeit auf.The advantage that can be achieved with the invention is, in particular, that with the cooking appliance according to the invention, high-quality interior shots of the cooking chamber are made possible even at higher cooking chamber temperatures. Higher cooking chamber temperatures are present, for example, in cooking appliances designed as pyrolysis appliances when they are operated in their pyrolysis mode. In the cooking appliance according to the invention, good sealing of the camera duct from the environment surrounding the camera duct, for example thermal insulation built into the housing and surrounding the cooking chamber and/or air ducting for active or passive cooling of the electronics of the cooking appliance, is guaranteed. One is a separate manufacture of the two Channel sections allowed. On the other hand, the installation of the camera channel is made easier. In addition, the second channel section of the camera channel is implemented in a particularly flexible manner. Accordingly, the handling and assembly of the second channel section is simplified. Silicone also has high temperature resistance.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.Advantageous refinements and developments of the invention result from the following dependent claims.

Hierdurch ist sichergestellt, dass keine die Qualität der Innenraumaufnahmen des Garraums beeinträchtigenden oder sogar die Funktion der Kamera dauerhaft störenden Verunreinigungen, wie beispielsweise kurzfaserige Bestandteile der vorgenannten thermischen Isolierung oder Staubpartikel aus der Umgebungsluft des Gargeräts, die in der Luftführung mitgeschleppt werden, in das Innere des die Kamera mit dem Garraum bildleitend verbindenden Kamerakanals gelangen. Zum anderen ermöglicht die den ersten Kanalabschnitt von dem zweiten Kanalabschnitt trennende zweite Glasscheibenanordnung eine stärkere Reduzierung der Temperatur an der Kamera. Entsprechend ist es mittels der Erfindung möglich, die Temperatur an der Kamera auch bei höheren Garraumtemperaturen in einem beispielsweise für übliche Kameras spezifizierten Temperaturbereich zu halten.This ensures that no contaminants that impair the quality of the interior shots of the cooking chamber or even permanently disrupt the function of the camera, such as short-fibre components of the aforementioned thermal insulation or dust particles from the air surrounding the cooking appliance, which are carried along in the air duct, get into the interior of the the camera can reach the camera channel that connects the cooking chamber in an image-conducting manner. On the other hand, the second glass pane arrangement, which separates the first channel section from the second channel section, enables a greater reduction in the temperature on the camera. Accordingly, it is possible by means of the invention to keep the temperature on the camera in a temperature range specified for conventional cameras, for example, even at higher cooking chamber temperatures.

Die Erfindung ist sowohl bei als Haushaltsgeräte wie auch bei als gewerbliche Geräte ausgebildeten Gargeräten vorteilhaft einsetzbar. Die erste Glasscheibenanordnung kann lediglich eine einzige erste Glasscheibe wie auch eine Mehrzahl von ersten Glasscheiben aufweisen, wobei die Mehrzahl von ersten Glasscheiben beispielsweise jeweils mittels einer thermische isolierenden Zwischenschicht voneinander getrennt sein können, um eine stärkere thermische Isolierung realisieren zu können. Die Zwischensicht kann beispielsweise als eine Luftschicht oder eine andere thermische isolierende Gasschicht ausgebildet sein. Gleiches gilt für die zweite Glasscheibenanordnung. Darüber hinaus ist es denkbar, dass mindestens eine der mindestens einen ersten Glasscheibe und/oder mindestens eine der mindestens einen zweiten Glasscheibe als eine Linse, beispielsweise eine Sammellinse, ausgebildet ist.The invention can advantageously be used both in cooking appliances designed as household appliances and in cooking appliances designed as commercial appliances. The first glass pane arrangement can have only a single first glass pane or a plurality of first glass panes, wherein the plurality of first glass panes can be separated from one another, for example by means of a thermally insulating intermediate layer, in order to be able to achieve stronger thermal insulation. The intermediate layer can be formed, for example, as an air layer or another thermally insulating gas layer. The same applies to the second glass pane arrangement. In addition, it is conceivable that at least one of the at least one first glass pane and/or at least one of the at least one second glass pane is designed as a lens, for example a converging lens.

Grundsätzlich ist die erste Dichtung nach Art, Funktionsweise, Material, Anordnung und Anzahl in weiten geeigneten Grenzen frei wählbar. Eine vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass die erste Dichtung ein Halteblech und ein Federblech aufweist, wobei die erste Glasscheibenanordnung zwischen dem Halteblech und dem Federblech federnd eingespannt ist. Hierdurch ist die erste Dichtung auf konstruktiv einfache und robuste Weise realisiert. Zum anderen ist diese Ausbildung der ersten Dichtung auch für besonders hohe Garraumtemperaturen, beispielsweise bei Pyrolysegeräten während des Pyrolysebetriebs, geeignet. Dabei kann die erste Glasscheibenanordnung jeweils mittelbar oder unmittelbar zwischen dem Halteblech und dem Federblech federnd eingespannt sein. Beispielsweise ist es denkbar, dass zwischen dem Halteblech und der ersten Glasscheibenanordnung eine zusätzliche Dichtungskomponente angeordnet ist. Möglich ist auch, dass zwischen dem Federblech und der Gehäusewand eine weitere zusätzliche Dichtungskomponente angeordnet ist. Die zusätzliche Dichtungskomponente und/oder die weitere zusätzliche Dichtungskomponente sind somit als Teil der ersten Dichtung ausgebildet. Die zusätzliche Dichtungskomponente und die weitere zusätzliche Dichtungskomponente können beispielsweise jeweils als eine Flachdichtung aus Graphit oder Glimmer ausgebildet sein. Aufgrund der hohen Temperaturbeständigkeit dieser Werkstoffe sind derartige Dichtungen auch bei sehr hohen Garraumtemperaturen, wie diese beispielsweise bei Pyrolysegeräten auftreten können, geeignet. Ferner lassen sich derartige plattenartigen Dichtungsmaterialien in alle denkbaren Geometrien wunschgemäß zuschneiden.In principle, the first seal can be freely selected in terms of type, function, material, arrangement and number within wide, suitable limits. An advantageous development of the cooking appliance according to the invention provides that the first seal has a retaining plate and a spring plate, the first glass pane arrangement being resiliently clamped between the retaining plate and the spring plate. As a result, the first seal is implemented in a structurally simple and robust manner. On the other hand, this design of the first seal is also suitable for particularly high cooking chamber temperatures, for example in pyrolysis devices during pyrolysis operation. In this case, the first glass pane arrangement can in each case indirectly or be spring-loaded directly between the retaining plate and the spring plate. For example, it is conceivable that an additional sealing component is arranged between the retaining plate and the first glass pane arrangement. It is also possible that a further additional sealing component is arranged between the spring plate and the housing wall. The additional sealing component and/or the further additional sealing component are thus designed as part of the first seal. The additional sealing component and the further additional sealing component can each be designed as a flat gasket made of graphite or mica, for example. Due to the high temperature resistance of these materials, such seals are also suitable for very high cooking chamber temperatures, such as can occur with pyrolysis devices, for example. Furthermore, such plate-like sealing materials can be cut into all conceivable geometries as desired.

Eine weitere vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass mindestens eine der mindestens einen ersten Glasscheibe als ein Borosilikatglas, bevorzugt als ein mit mindestens einer IR-Strahlung abweisenden Beschichtung beschichtetes Borosilikatglas, ausgebildet ist. Auf diese Weise ist diese mindestens eine erste Glasscheibe und damit die erste Glasscheibenanordnung auch bei besonders hohen Garraumtemperaturen einsetzbar. Mittels der bevorzugten Ausführungsform, wonach das Borosilikatglas zusätzlich mindestens eine IR-Strahlung abweisende Beschichtung aufweist, ist eine weitere Erhöhung der mittels der ersten Glasscheibenanordnung erzielten thermischen Isolierung ermöglicht. IR-Strahlung ist die Abkürzung von Infrarotstrahlung, also Strahlung im Infrarotbereich.A further advantageous development of the cooking appliance according to the invention provides that at least one of the at least one first glass pane is designed as a borosilicate glass, preferably as a borosilicate glass coated with at least one coating that repels IR radiation. In this way, this at least one first glass pane and thus the first glass pane arrangement can also be used at particularly high cooking chamber temperatures. By means of the preferred embodiment, according to which the borosilicate glass additionally has at least one coating that repels IR radiation, a further increase in the thermal insulation achieved by means of the first glass pane arrangement is made possible. IR radiation is the abbreviation of infrared radiation, i.e. radiation in the infrared range.

Eine andere vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass mindestens eine der mindestens einen zweiten Glasscheibe als ein Floatglas, bevorzugt als ein mit mindestens einer IR-Strahlung abweisenden Beschichtung beschichtetes Floatglas, ausgebildet ist. Hierdurch ist diese mindestens eine zweite Glasscheibe und damit die zweite Glasscheibenanordnung kostengünstig realisierbar. Analog zu der vorgenannten Ausführungsform ermöglicht die bevorzugte Ausführungsform, wonach das Floatglas zusätzlich mindestens eine IR-Strahlung abweisende Beschichtung aufweist, eine weitere Erhöhung der mittels der zweiten Glasscheibenanordnung erzielten thermischen Isolierung. Floatglas wird auch als Grünglas bezeichnet.Another advantageous development of the cooking appliance according to the invention provides that at least one of the at least one second glass pane is designed as a float glass, preferably as a float glass coated with at least one coating that repels IR radiation. As a result, this at least one second glass pane and thus the second glass pane arrangement can be implemented cost-effectively. Analogously to the aforementioned embodiment, the preferred embodiment, according to which the float glass additionally has at least one coating that repels IR radiation, enables a further increase in the thermal insulation achieved by means of the second glass pane arrangement. Float glass is also known as green glass.

Grundsätzlich ist die Ausbildung des den ersten Kanalabschnitt und den zweiten Kanalabschnitt aufweisenden Kamerakanals nach Art, Dimensionierung, Verbindung der beiden Kanalabschnitte und Anordnung in weiten geeigneten Grenzen frei wählbar. Für den ersten Kanalabschnitt ist das Material ebenfalls frei wählbar.In principle, the design of the camera channel having the first channel section and the second channel section can be freely selected within wide suitable limits in terms of type, dimensioning, connection of the two channel sections and arrangement. The material can also be freely selected for the first channel section.

Eine besonders vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass die erste Dichtung einen Temperatureinsatzbereich bis 500°C und/oder die zweite Dichtung einen Temperatureinsatzbereich bis 250°C aufweist. Auf diese Weise ist der Einsatz des erfindungsgemäßen Gargeräts auch bei höchsten Garraumtemperaturen, die bei üblichen Gargeräten im Garraum erreicht werden, einsetzbar.A particularly advantageous development of the cooking appliance according to the invention provides that the first seal has a temperature range of use up to 500°C and/or the second seal has a temperature range of use of up to 250°C. In this way, the cooking appliance according to the invention can also be used at the highest cooking chamber temperatures that are reached in the cooking chamber with conventional cooking appliances.

Eine vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts gemäß der beiden letztgenannten Ausführungsformen sieht vor, dass mindestens eine der mindestens einen zweiten Dichtung als eine Glasseidendichtung ausgebildet ist. Glasseidendichtungen sind für Hochtemperaturanwendungen geeignet und in einer Vielzahl von Ausführungsformen für voneinander verschiedene Anwendungsfälle erhältlich.An advantageous further development of the cooking appliance according to the two last-mentioned embodiments provides that at least one of the at least one second seal is designed as a glass fiber seal. Glass fiber gaskets are suitable for high temperature applications and are available in a variety of designs for different applications.

Eine andere vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass die zweite Glasscheibenanordnung an dem zweiten Kanalabschnitt befestigt ist. Auf diese Weise ist die Befestigung der zweiten Glasscheibenanordnung auf besonders einfache Art ermöglicht. Beispielsweise ist es denkbar, dass die zweite Glasscheibenanordnung mittels eines mindestens teilweise als Silikonkanal ausgebildeten zweiten Kanalabschnitts gehalten ist.Another advantageous development of the cooking appliance according to the invention provides that the second glass pane arrangement is attached to the second channel section. In this way, the attachment of the second glass pane arrangement is made possible in a particularly simple manner. For example, it is conceivable that the second glass pane arrangement is held by means of a second channel section that is at least partially designed as a silicone channel.

Grundsätzlich ist die Anordnung des Kamerakanals an dem Gehäuse des Gargeräts in weiten geeigneten Grenzen frei wählbar. Beispielsweise ist es möglich, dass der Kamerakanal und damit die Öffnung in der Gehäusewand in einem zentralen Bereich der Gehäusewand angeordnet ist, so dass sich das Innere des Garraums besonders vorteilhaft mittels der Kamera erfassen lässt. Ferner ist es denkbar, dass der Kamerakanal mit einer Öffnung in der Gehäusewand zusammenwirkt, die bei anderen Gargerätemodellen für eine Garraumbeleuchtung verwendet wird. Entsprechend lässt sich das erfindungsgemäße Gargerät weitgehend mit den für diese anderen Gargerätemodelle verwendeten Werkzeuge herstellen.In principle, the arrangement of the camera channel on the housing of the cooking appliance can be freely selected within wide, suitable limits. For example, it is possible for the camera channel and thus the opening in the housing wall to be arranged in a central area of the housing wall, so that the interior of the cooking chamber can be captured particularly advantageously by the camera. Furthermore, it is conceivable that the camera channel interacts with an opening in the housing wall, which is used for cooking space lighting in other cooking appliance models. Accordingly, the cooking appliance according to the invention can largely be produced with the tools used for these other cooking appliance models.

Diese in dem letzten Absatz exemplarisch erläuterte Freiheit bei der Gestaltung des Kamerakanals gilt entsprechend auch für den ersten und den zweiten Kanalabschnitt.This freedom in designing the camera channel, which is explained by way of example in the last paragraph, also applies correspondingly to the first and the second channel section.

Eine weitere vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass der erste Kanalabschnitt in einem Bereich des Gehäuses angeordnet ist, in dem eine thermische Isolierung des Garraums angeordnet ist. Hierdurch ist die thermische Isolierung des ersten Kanalabschnitts weiter verbessert, ohne dass hierfür zusätzliche Bauteile erforderlich sind.A further advantageous development of the cooking appliance according to the invention provides that the first channel section is arranged in a region of the housing in which thermal insulation of the cooking chamber is arranged. As a result, the thermal insulation of the first duct section is further improved without additional components being required for this purpose.

Eine besonders vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass der zweite Kanalabschnitt in einem Bereich des Gehäuses angeordnet ist, in dem eine Luftführung zur Kühlung der Elektronik des Gargeräts angeordnet ist. Auf diese Weise ist der zweite Kanalabschnitt und damit auch die unmittelbare Umgebung der Kamera mittels der Luftführung aktiv kühlbar, so dass die thermische Belastung des zweiten Kanalabschnitts und damit insbesondere der Kamera durch hohe Temperaturen weiter reduziert ist.A particularly advantageous development of the cooking appliance according to the invention provides that the second duct section is arranged in an area of the housing in which an air duct for cooling the electronics of the cooking appliance is arranged. In this way, the second channel section and thus also the immediate vicinity of the camera by means of Air duct can be actively cooled, so that the thermal load on the second duct section and thus in particular on the camera due to high temperatures is further reduced.

Eine andere vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass die Kamera auf einer Leiterplatte der Elektronik angeordnet ist. Hierdurch ist der konstruktive und schaltungstechnische Aufbau der Kamera vereinfacht. Sofern die Elektronik, wie bei Gargeräten mit Garraum üblich, aktiv oder passiv gekühlt wird, wird darüber hinaus auch die Kamera, beispielsweise ein Kamerachip, gekühlt. Entsprechend ist die thermische Belastung der Kamera weiter reduziert.Another advantageous development of the cooking appliance according to the invention provides that the camera is arranged on a printed circuit board of the electronics. This simplifies the design and circuitry of the camera. If the electronics are actively or passively cooled, as is usual in cooking appliances with a cooking chamber, the camera, for example a camera chip, is also cooled. Accordingly, the thermal load on the camera is further reduced.

Eine weitere besonders vorteilhafte Weiterbildung des erfindungsgemäßen Gargeräts sieht vor, dass der erste Kanalabschnitt und der zweite Kanalabschnitt des Kamerakanals derart modular ausgebildet sind, dass der erste Kanalabschnitt bei einer Montage der Gehäusewand und der zweite Kanalabschnitt bei einer Montage der Elektronik montierbar ist. Auf diese Weise ist die Montage des Kamerakanals weiter vereinfacht. Beispielsweise ist es möglich, zunächst den ersten Kanalabschnitt mit der Gehäusewand in einem ersten Fertigungsschritt an einer ersten Fertigungsstation und den zweiten Kanalabschnitt mit der Elektronik in einem zweiten Fertigungsschritt an einer zweiten Fertigungsstation zu montieren, und zeitlich danach den ersten und den zweiten Kanalabschnitt bei der Montage der Elektronik an dem Rest des Gargeräts mit der Gehäusewand miteinander zu verbinden.Another particularly advantageous development of the cooking appliance according to the invention provides that the first channel section and the second channel section of the camera channel are of modular design such that the first channel section can be assembled when the housing wall is assembled and the second channel section can be assembled when the electronics are assembled. In this way, the assembly of the camera channel is further simplified. For example, it is possible to first assemble the first duct section with the housing wall in a first production step at a first production station and the second duct section with the electronics in a second production step at a second production station, and then the first and the second duct section during assembly to connect the electronics to the rest of the cooking appliance with the housing wall.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt die

Figur 1
ein Ausführungsbeispiel des erfindungsgemäßen Gargeräts in einer Schnittdarstellung, in teilweiser Ansicht und
Figur 2
das Ausführungsbeispiel aus der Fig. 1 in vergleichbarer Darstellung, wobei die erste Dichtung eine zusätzliche Dichtungskomponente und eine weitere zusätzliche Dichtungskomponente aufweist.
An embodiment of the invention is shown purely schematically in the drawing and is described in more detail below. It shows the
figure 1
an embodiment of the cooking appliance according to the invention in a sectional view, in a partial view and
figure 2
the embodiment from the 1 in a comparable representation, the first seal having an additional sealing component and a further additional sealing component.

In Fig. 1 ist ein erfindungsgemäßes Gargerät exemplarisch dargestellt. Das Gargerät ist hier als ein Backofen ausgebildet und weist ein Gehäuse 2 auf, in dem ein durch eine Gehäusewand 4 begrenzter Garraum 6 angeordnet ist. Ferner weist der Backofen eine als 2D-Fixfokuskamera ausgebildete Kamera 8 auf, wobei in der Gehäusewand 4 eine durch eine erste Glasscheibenanordnung 10 verdeckte Öffnung 12 für die Kamera 8 ausgeformt ist. Die erste Glasscheibenanordnung 10 weist bei dem vorliegenden Ausführungsbeispiel lediglich eine einzige erste Glasscheibe 11 auf, wobei die erste Glasscheibe 11 als eine 4 mm dicke Borosilikatglasscheibe mit einer auf einer dem Garraum 6 zugewandten Seite der Glasscheibe 11 aufgebrachten lR-Strahlung reflektierenden Beschichtung auf. Die IR-Strahlung reflektierende Beschichtung der ersten Glasscheibe 11 ist in der Fig. 1 nicht dargestellt.In 1 a cooking appliance according to the invention is shown as an example. The cooking appliance is designed here as an oven and has a housing 2 in which a cooking chamber 6 delimited by a housing wall 4 is arranged. The baking oven also has a camera 8 designed as a 2D fixed-focus camera, with an opening 12 for the camera 8 being formed in the housing wall 4 and covered by a first glass pane arrangement 10 . In the present exemplary embodiment, the first glass pane arrangement 10 has only one single first glass pane 11, the first glass pane 11 as a 4 mm thick borosilicate glass pane with a coating applied to a side of the glass pane 11 facing the cooking chamber 6 that reflects IR radiation. The coating of the first glass pane 11 reflecting IR radiation is in FIG 1 not shown.

In dem Garraum 6 ist eine als Backmuffelleuchte ausgebildete Garraumbeleuchtung angeordnet. Die Backmuffelleuchte dient hier gleichzeitig als Kamerabeleuchtung und ist ebenfalls nicht dargestellt. Entsprechend kann die Kamera 8 in dem vorliegenden Ausführungsbeispiel einfacher aufgebaut sein.In the cooking chamber 6 a cooking chamber lighting designed as an oven lamp is arranged. The oven lamp serves here at the same time as camera lighting and is also not shown. Accordingly, the camera 8 in the present embodiment can be constructed more simply.

Die Kamera 8 ist zur Erstellung von Innenaufnahmen des Garraums 6 ausgebildet und entsprechend an dem Gehäuse 2 angeordnet. Da der Garraum 6 relativ breit und flach ausgebildet ist, weist ein Objektiv 14 der Kamera 8 einen entsprechend großen objektseitigen Öffnungswinkel auf.The camera 8 is designed to take pictures of the interior of the cooking chamber 6 and is arranged accordingly on the housing 2 . Since the cooking chamber 6 is relatively wide and flat, a lens 14 of the camera 8 has a correspondingly large opening angle on the object side.

Die Öffnung 12 ist durch die erste Glasscheibenanordnung 10, nämlich die erste Glasscheibe 11, und eine zwischen der Glasscheibenanordnung 10 und einer Garraumdecke 16 der Gehäusewand 4 angeordneten ersten Dichtung 18 im Wesentlichen gasdicht verschlossen. Entsprechend kann der bei einem in dem Garraum 6 ablaufenden Garprozess eines auf einem Gargutträger aufgelegten Garguts entstehende Wrasen nicht in ungewünschter Weise durch die Öffnung 12 entweichen. Der Gargutträger und das darauf aufgelegte Gargut sind nicht dargestellt. Die erste Dichtung 18 weist bei dem vorliegenden Ausführungsbeispiel ein Halteblech 20 und ein Federblech 22 auf, wobei die erste Glasscheibenanordnung 10 zwischen dem Halteblech 20 und dem Federblech 22 federnd eingespannt ist. Siehe Fig. 1. Das Halteblech 20 und das Federblech 22 sind jeweils rahmenartig ausgebildet, um so eine bildleitende Verbindung durch die Glasscheibenanordnung 10 zu ermöglichen.The opening 12 is closed by the first glass pane arrangement 10, namely the first glass pane 11, and a first seal 18 arranged between the glass pane arrangement 10 and a cooking chamber ceiling 16 of the housing wall 4 in a substantially gas-tight manner. Correspondingly, the vapors produced during a cooking process taking place in the cooking chamber 6 of a food to be cooked placed on a food carrier cannot escape through the opening 12 in an undesired manner. The food support and the food placed on it are not shown. In the present exemplary embodiment, the first seal 18 has a retaining plate 20 and a spring plate 22 , the first glass pane arrangement 10 being resiliently clamped between the retaining plate 20 and the spring plate 22 . Please refer 1 . The retaining plate 20 and the spring plate 22 are each formed like a frame in order to enable an image-conducting connection through the glass pane arrangement 10 .

Die aus dem Halteblech 20, dem Federblech 22 und der Glasscheibenanordnung 10 gebildete Baugruppe ist mittels Befestigungsschrauben 24 an der Gehäusewand 4 angeschraubt. Dabei ist die vorgenannte Baugruppe derart aufeinander abgestimmt ausgebildet und zueinander angeordnet, dass mittels der Befestigung dieser Baugruppe an der Gehäusewand 4 mittels der Befestigungsschrauben 24 zum einen das Halteblech 20 und das Federblech 22 dicht an der Glasscheibenanordnung 10 und zum anderen die aus dem Halteblech 20, dem Federblech 22 und der Glasscheibenanordnung 10 gebildete Baugruppe dicht an der Garraumdecke 16 anliegt. Die das Halteblech 20 und das Federblech 22 aufweisende erste Dichtung 18 ist für eine Temperatureinsatzbereich bis 500°C geeignet ausgebildet.The assembly formed from the retaining plate 20, the spring plate 22 and the glass pane arrangement 10 is screwed to the housing wall 4 by means of fastening screws 24. The aforementioned subassembly is designed and arranged in such a way that it is coordinated with one another in such a way that by fastening this subassembly to the housing wall 4 by means of the fastening screws 24, on the one hand, the retaining plate 20 and the spring plate 22 are tight to the glass pane arrangement 10 and, on the other hand, the assembly formed by the spring plate 22 and the glass pane arrangement 10 rests tightly against the cooking chamber ceiling 16 . The first seal 18, which has the retaining plate 20 and the spring plate 22, is designed to be suitable for use in a temperature range of up to 500.degree.

Darüber hinaus schützen die erste Glasscheibenanordnung 10, also die erste Glasscheibe 11 aus mit einer IR-Strahlung reflektierenden Beschichtung versehenen Borosilikatglas, und die erste Dichtung 18 die Kamera 8 vor in dem Wrasen enthaltenen Stoffen und vor den beispielsweise bei dem Garprozess in dem Garraum 6 entstehenden hohen Temperaturen, was nachfolgend näher erläutert ist.In addition, protect the first glass pane arrangement 10, ie the first glass pane 11 provided with a coating reflecting IR radiation borosilicate glass, and first seal 18 protects the camera 8 from substances contained in the vapors and from the high temperatures occurring, for example, during the cooking process in the cooking chamber 6, which is explained in more detail below.

Dies ist besonders wichtig, da das Gargerät als selbstreinigendes Gargerät, also mit Pyrolysefunktion, ausgestattet ist. Im Pyrolysebetrieb ergeben sich sehr hohe Temperaturen.This is particularly important since the cooking appliance is equipped as a self-cleaning cooking appliance, i.e. with a pyrolysis function. Very high temperatures result in pyrolysis operation.

Der Garraum 6 ist auf dem Fachmann bekannte Weise durch eine im Wesentlichen umlaufende Isolationsschicht 26 von der Umgebung thermisch isoliert. Die Isolationsschicht 26 ist in der Fig. 1 nur teilweise dargestellt.The cooking chamber 6 is thermally insulated from the environment in a manner known to those skilled in the art by a substantially circumferential insulating layer 26 . The insulating layer 26 is in the 1 only partially shown.

Die Öffnung 12 in der Garraumwand 4 ist möglichst klein gehalten, um die Isolationsschicht 26 an dieser Stelle möglichst wenig durchbrechen zu müssen. Die Öffnung 12 ist in der Fig. 1 der Übersichtlichkeit wegen deutlich vergrößert dargestellt.The opening 12 in the cooking chamber wall 4 is kept as small as possible in order to have to break through the insulation layer 26 as little as possible at this point. The opening 12 is in the 1 shown enlarged for the sake of clarity.

Durch die Isolationsschicht 26 bedingt, aber auch zwecks einer geringeren Temperaturbelastung der Kamera 8, ist die Kamera 8 weiter weg von der Garraumdecke 4 und damit von dem Garraum 6 in einen kühleren Bereich des Gehäuses 2 angeordnet.Due to the insulation layer 26, but also for the purpose of reducing the temperature load on the camera 8, the camera 8 is arranged further away from the cooking chamber ceiling 4 and thus from the cooking chamber 6 in a cooler area of the housing 2.

Da die Öffnung 12 relativ klein ausgebildet ist, kann die Öffnung 12 im Bereich eines nicht dargestellten Oberhitze-Heizkörper in der Garraumwand 4 angeordnet sein, ohne dass sich die Öffnung 12 und der Oberhitze-Heizkörper gegenseitig negativ beeinflussen. Beispielsweise erscheint der Oberhitze-Heizkörper nicht auf den mit der Kamera 8 aufgenommenen Bildern.Since the opening 12 is relatively small, the opening 12 can be arranged in the region of a top heating element, not shown, in the cooking chamber wall 4 without the opening 12 and the top heating element having a negative effect on one another. For example, the top heater does not appear in the images captured by the camera 8.

Gleiches gilt für die Garraumbeleuchtung; auch die Garraumbeleuchtung ist derart in dem Garraum 6 angeordnet, dass es zu keiner ungewünschten Wechselwirkung zwischen der Garraumbeleuchtung und beispielsweise dem vorgenannten Oberhitze-Heizkörper kommt.The same applies to the cooking space lighting; the cooking chamber lighting is also arranged in the cooking chamber 6 in such a way that there is no undesired interaction between the cooking chamber lighting and, for example, the aforementioned upper heating element.

Die Kamera 8 ist bei dem vorliegenden Ausführungsbeispiel auf einer Leiterplatte 28 einer Elektronik 30 des Gargeräts, in der Blattebene von Fig. 1 oberhalb der Öffnung 12, angeordnet. Um die an der Elektronik 30 angeordnete Kamera 8 mit dem Garraum 6 bildleitend zu verbinden, weist das Gargerät einen Kamerakanal 32 auf. Der Kamerakanal 32 weist einen ersten Kanalabschnitt 34 und einen zweiten Kanalabschnitt 36 auf, wobei sich der erste Kanalabschnitt 34 von der ersten Glasscheibenanordnung 10 bis zu einer zweiten Glasscheibenanordnung 38 und sich der zweite Kanalabschnitt 36 von der zweiten Glasscheibenanordnung 38 bis zu der Kamera 8 erstreckt. Die zweite Glasscheibenanordnung 38 weist bei dem vorliegenden Ausführungsbeispiel eine einzige zweite Glasscheibe 40 auf, wobei die zweite Glasscheibe 40 als ein mit mindestens einer IR-Strahlung reflektierenden Beschichtung beschichtetes, 4 mm dickes Floatglas ausgebildet ist.In the present exemplary embodiment, the camera 8 is on a printed circuit board 28 of electronics 30 of the cooking appliance, in the plane of the drawing 1 above the opening 12. The cooking appliance has a camera channel 32 in order to connect the camera 8 arranged on the electronics 30 to the cooking chamber 6 in an image-conducting manner. The camera duct 32 has a first duct section 34 and a second duct section 36, the first duct section 34 extending from the first glass pane arrangement 10 to a second glass pane arrangement 38 and the second duct section 36 extending from the second glass pane arrangement 38 to the camera 8. In the present exemplary embodiment, the second glass pane arrangement 38 has a single second glass pane 40, the second glass pane 40 being designed as a 4 mm thick float glass coated with at least one coating that reflects IR radiation.

Der erste Kanalabschnitt 34 des Kamerakanals 32 ist aus einer Abkantung 42 der Gehäusewand 4 gebildet. Der zweite Kanalabschnitt 36 des Kamerakanals 32 ist aus Silikon hergestellt und damit als ein Silikonkanal ausgebildet. Bei dem vorliegenden Ausführungsbeispiel ist die zweite Glasscheibenanordnung 38 an dem zweiten Kanalabschnitt 36 gehalten, also befestigt. Hierfür weist der als Silikonkanal ausgebildete zweite Kanalabschnitt 36 an einem dem Garraum 6 zugewandten freien Ende des zweiten Kanalabschnitts 36 eine umlaufende Nut 44 auf, mittels der der zweite Kanalabschnitt 36 die zweite Glasscheibenanordnung 38, nämlich die zweite Glasscheibe 40, einfasst. Mit einem der Elektronik 8 zugewandten freien Ende des zweiten Kanalabschnitts 36 ist der zweite Kanalabschnitt 36 mit der Elektronik 8 fest und gasdicht verbunden.The first channel section 34 of the camera channel 32 is formed from a fold 42 of the housing wall 4 . The second channel section 36 of the camera channel 32 is made of silicone and is therefore designed as a silicone channel. In the present exemplary embodiment, the second glass pane arrangement 38 is held on the second channel section 36, that is to say fastened. For this purpose, the second channel section 36 designed as a silicone channel has a circumferential groove 44 at a free end of the second channel section 36 facing the cooking chamber 6, by means of which the second channel section 36 encloses the second glass pane arrangement 38, namely the second glass pane 40. The second channel section 36 is firmly and gas-tightly connected to the electronics 8 with a free end of the second channel section 36 facing the electronics 8 .

Ferner sind der erste Kanalabschnitt 34 und der zweite Kanalabschnitt 36 des Kamerakanals 32 als separate Baueinheiten ausgebildet, wobei der erste und der zweite Kanalabschnitt 34, 36 mittels einer zweiten Dichtung 46 miteinander gasdicht verbunden sind. Der erste Kanalabschnitt 34 und der von dem ersten Kanalabschnitt 34 mittels der zweiten Glasscheibenanordnung 38 getrennte zweite Kanalabschnitt 36 sind somit gegenüber einer Umgebung des Kamerakanals 32 im Wesentlichen gasdicht verschlossen. Die zweite Dichtung 46 ist als eine Glasseidendichtung ausgebildet und für einen Temperatureinsatzbereich bis 250°C geeignet.Furthermore, the first channel section 34 and the second channel section 36 of the camera channel 32 are designed as separate structural units, the first and the second channel section 34, 36 being connected to one another in a gas-tight manner by means of a second seal 46. The first duct section 34 and the second duct section 36 separated from the first duct section 34 by the second glass pane arrangement 38 are thus sealed in an essentially gas-tight manner with respect to the surroundings of the camera duct 32 . The second seal 46 is designed as a glass fiber seal and is suitable for a temperature range of up to 250°C.

Wie aus der Fig. 1 sowie den obigen Ausführungen ferner hervorgeht, ist der erste Kanalabschnitt 34 des Kamerakanals 32 in einem Bereich des Gehäuses 2 angeordnet, in dem die Isolierschicht 26, also die thermische Isolierung des Garraums 6, angeordnet ist. Der zweite Kanalabschnitt 36 des Kamerakanals 32 ist in einem Bereich des Gehäuses 2 angeordnet, in dem eine als Luftkanal ausgebildete Luftführung 48 zur aktiven Kühlung der Elektronik 8 des Gargeräts angeordnet ist. Die Kamera 8 steht somit in Wärmeübertragungsverbindung mit der in dem Luftkanal 48 geführten Kühlluft. Der Luftkanal 48 ist mittels einer dritten Dichtung 50 aus Silikon gegen die Umgebung im Wesentlichen luftdicht abgedichtet.How from the 1 as well as the above statements also shows that the first channel section 34 of the camera channel 32 is arranged in a region of the housing 2 in which the insulating layer 26, ie the thermal insulation of the cooking chamber 6, is arranged. The second duct section 36 of the camera duct 32 is arranged in a region of the housing 2 in which an air duct 48 designed as an air duct is arranged for actively cooling the electronics 8 of the cooking appliance. The camera 8 is thus in heat-transfer connection with the cooling air guided in the air duct 48 . The air duct 48 is sealed against the environment in an essentially airtight manner by means of a third seal 50 made of silicone.

Der Luftkanal 48 des Gargeräts dient dazu, den bei Garprozessen in dem Garraum 6 entstehenden Wrasen aus dem Garraum 6 abzusaugen und in die freie Umgebung abzuführen. Dabei wird das Wrasen-Luft-Gemisch in dem in dem Gehäuse 2 ausgebildeten Luftkanal 48 geführt. Auf diese Weise wird auch das Gargerät, insbesondere die Elektronik 8 des Gargeräts, gekühlt. Anders als in der Fig. 1 dargestellt, grenzen der Luftkanal 48 und die dritte Dichtung 50 nicht unmittelbar an den zweiten Kanalabschnitt 36 des Kamerakanals 32 an.The air duct 48 of the cooking appliance is used to suck the vapors produced during cooking processes in the cooking chamber 6 out of the cooking chamber 6 and to discharge them into the open air. The vapor/air mixture is guided in the air duct 48 formed in the housing 2 . The cooking appliance, in particular the electronics 8 of the cooking appliance, is also cooled in this way. Unlike in the 1 shown, the air duct 48 and the third seal 50 do not directly adjoin the second duct section 36 of the camera duct 32 .

Die einzelnen Bauteile des erfindungsgemäßen Gargeräts sind teilweise mit Abstand zueinander in der Fig. 1 dargestellt; siehe beispielsweise den Abstand zwischen der Isolationsschicht 26 und der Gehäusewand 4 oder dem Luftkanal 48. Dies dient lediglich der besseren Übersicht. Die Bauteile des erfindungsgemäßen Gargeräts sind, wenn nicht anhand des Ausführungsbeispiels explizit anders ausgeführt, auf dem Fachmann bekannte Weise miteinander verbunden.The individual components of the cooking appliance according to the invention are partially spaced from each other in the 1 shown; see for example the distance between the Insulation layer 26 and the housing wall 4 or the air duct 48. This is only for a better overview. The components of the cooking appliance according to the invention are connected to one another in a manner known to those skilled in the art, unless explicitly stated otherwise using the exemplary embodiment.

Wie oben bereits ausgeführt, sind der erste Kanalabschnitt 34 und der zweite Kanalabschnitt 36 des Kamerakanals 32 als separate Baueinheiten ausgebildet, wobei der erste und der zweite Kanalabschnitt 34, 36 mittels der zweiten Dichtung 46 miteinander im Wesentlichen gasdicht verbunden sind. Darüber hinaus sind der erste Kanalabschnitt 34 und der zweite Kanalabschnitt 36 des Kamerakanals 32 derart modular ausgebildet, dass der erste Kanalabschnitt 34 bei einer Montage der Gehäusewand 4 und der zweite Kanalabschnitt 36 bei einer Montage der Elektronik 8 montierbar ist. Entsprechend ist es möglich, zunächst den ersten Kanalabschnitt 34 mit der Gehäusewand 4 in einem ersten Fertigungsschritt an einer ersten Fertigungsstation und den zweiten Kanalabschnitt 36 mit der Elektronik 8 in einem zweiten Fertigungsschritt an einer zweiten Fertigungsstation zu montieren und zeitlich danach den ersten und den zweiten Kanalabschnitt 34, 36 des Kamerakanals 32 bei der Montage der Elektronik 8 an dem Rest des Gargeräts mit der Gehäusewand 4 miteinander zu verbinden.As already explained above, the first channel section 34 and the second channel section 36 of the camera channel 32 are designed as separate structural units, the first and the second channel section 34, 36 being connected to one another in an essentially gas-tight manner by means of the second seal 46. In addition, the first channel section 34 and the second channel section 36 of the camera channel 32 are of modular design such that the first channel section 34 can be installed when the housing wall 4 is assembled and the second channel section 36 can be assembled when the electronics 8 are assembled. Accordingly, it is possible to first assemble the first duct section 34 with the housing wall 4 in a first manufacturing step at a first manufacturing station and the second duct section 36 with the electronics 8 in a second manufacturing step at a second manufacturing station, and then the first and second duct sections 34, 36 of the camera channel 32 when mounting the electronics 8 on the rest of the cooking appliance with the housing wall 4 together.

In einem Pyrolysebetrieb des als Pyrolysegerät ausgebildeten Gargeräts ergibt sich beispielsweise die folgende Temperaturverteilung im Hinblick auf den Kamerakanal 32:
In dem Pyrolysebetrieb des Gargeräts erreicht die erste Glasscheibe 11 der ersten Glasscheibenanordnung 10 an der dem Garraum 6 zugewandten Seite etwa 430°C und an der dem Garraum 6 abgewandten Seite der ersten Glasscheibe 11 etwa 350°C. Die Temperatur der zweiten Glasscheibe 40 der zweiten Glasscheibenanordnung 38 beträgt an der dem Garraum 6 zugewandten Seite noch etwa 180°C bis etwa 200°C, während die Temperatur an dem Objektiv 14 der Kamera 8 etwa 110°C beträgt. Die Temperatur an dem der Elektronik 30 zugewandten Ende der Kamera 8 beträgt nur noch etwa 85°C, so dass bei dem vorliegenden Ausführungsbeispiel des erfindungsgemäßen Gargeräts eine handelsübliche Standardkamera als Kamera 8 verwendet werden kann. Entsprechend ermöglicht die Erfindung eine kostengünstige Herstellung des erfindungsgemäßen Gargeräts.In a pyrolysis operation of the cooking appliance designed as a pyrolysis appliance, the following temperature distribution results, for example, with regard to camera channel 32:
In the pyrolysis mode of the cooking appliance, the first glass pane 11 of the first glass pane arrangement 10 reaches about 430° C. on the side facing the cooking chamber 6 and about 350° C. on the side of the first glass pane 11 facing away from the cooking chamber 6 . The temperature of the second glass pane 40 of the second glass pane arrangement 38 is still about 180° C. to about 200° C. on the side facing the cooking chamber 6 , while the temperature on the lens 14 of the camera 8 is about 110° C. The temperature at the end of the camera 8 facing the electronics 30 is only about 85° C., so that a commercially available standard camera can be used as the camera 8 in the present exemplary embodiment of the cooking appliance according to the invention. Accordingly, the invention enables cost-effective production of the cooking appliance according to the invention.

Das Ausführungsbeispiel gemäß der Fig. 2 ist im Wesentlichen identisch zu dem Ausführungsbeispiel gemäß der Fig. 1, so dass grundsätzlich auf die obigen Ausführungen verwiesen werden kann. Entsprechend wird das Ausführungsbeispiel gemäß der Fig. 2 lediglich im Umfang der Unterschiede zu dem Ausführungsbeispiel gemäß der Fig. 1 nachfolgend erläutert. Gleiche oder gleichwirkende Bauteile sind in den Fig. 1 und 2 mit den gleichen Bezugszeichen versehen.The embodiment according to 2 is essentially identical to the embodiment according to FIG 1 , so that in principle reference can be made to the above statements. Accordingly, the embodiment according to the 2 only to the extent of the differences from the embodiment according to FIG 1 explained below. The same or equivalent components are in the 1 and 2 provided with the same reference numbers.

Z [0058] Im Unterschied zu dem Ausführungsbeispiel gemäß der Fig. 1 weist die erste Dichtung 18 zusätzlich zu dem Halteblech 20 und dem Federblech 22 eine zusätzliche Dichtungskomponente 21 und eine weitere zusätzliche Dichtungskomponente 23 auf. Die zusätzliche Dichtungskomponente 21 ist zwischen dem Halteblech 20 und der ersten Glasscheibenanordnung 10 angeordnet. Die weitere zusätzliche Dichtungskomponente 23 ist zwischen dem Federblech 22 und der Garraumdecke 16 der Gehäusewand 4 angeordnet, wobei die weitere zusätzliche Dichtungskomponente 23 auf der dem Kamerakanal 32 zugewandten Seite der Befestigungsschrauben 24 angeordnet ist. Die zusätzliche Dichtungskomponente 21 und die weitere zusätzliche Dichtungskomponente 23 sind jeweils als rahmenartige Flachdichtung aus Graphit oder Glimmer ausgebildet.Z In contrast to the embodiment according to FIG 1 the first seal 18 has an additional sealing component 21 and a further additional sealing component 23 in addition to the holding plate 20 and the spring plate 22 . The additional sealing component 21 is arranged between the holding plate 20 and the first glass pane arrangement 10 . The further additional sealing component 23 is arranged between the spring plate 22 and the cooking chamber ceiling 16 of the housing wall 4 , the further additional sealing component 23 being arranged on the side of the fastening screws 24 facing the camera channel 32 . The additional sealing component 21 and the further additional sealing component 23 are each designed as a frame-like flat gasket made of graphite or mica.

Die Erfindung ist nicht auf die vorliegenden Ausführungsbeispiele begrenzt. Beispielsweise ist die erfindungsgemäße Lehre auch bei anderen Gargeräten mit einem Garraum vorteilhaft einsetzbar.The invention is not limited to the present embodiments. For example, the teaching according to the invention can also be used advantageously in other cooking devices with a cooking chamber.

Die Kamera kann auch als plenoptische Kamera, TOF-Kamera oder Stereokamera, also in 3D-Technik, ausgebildet sein. Auch sind als Wärmebildkameras ausgebildete Kameras denkbar. Neben Einzelbildern ist auch die Aufnahme von Bilderfolgen und bewegten Bildern möglich.The camera can also be designed as a plenoptic camera, TOF camera or stereo camera, ie using 3D technology. Cameras designed as thermal imaging cameras are also conceivable. In addition to single images, the recording of image sequences and moving images is also possible.

Je nach den Erfordernissen des Einzelfalls können die erste Glasscheibenanordnung, die erste Dichtung, die zweite Glasscheibenanordnung und die zweite Dichtung geeignet aufeinander abgestimmt ausgebildet und angeordnet sein, so dass die Erfindung bei einer Vielzahl von denkbaren Anwendungsfällen vorteilhaft einsetzbar ist. Beispielsweise kann anstelle einer ersten Glasscheibenanordnung mit lediglich einer einzigen ersten Glasscheibe eine Mehrzahl von jeweils durch einen thermisch isolierenden Zwischenraum getrennte erste Glasscheiben verwendet werden. Der Zwischenraum könnte dabei mit Luft oder mit einem anderen Medium gefüllt sein, um eine thermische Isolierung zwischen den einzelnen ersten Glasscheiben zu erzielen. Entsprechend könnte die Dicke der einzelnen ersten Glasscheibe im Vergleich zu einer einzigen ersten Glasscheibe reduziert werden. Gleiches gilt für die zweite Glasscheibenanordnung. Auch ist es möglich, dass bei anderen Ausführungsformen des erfindungsgemäßen Gargeräts die mindestens eine erste Glasscheibe und/ oder die mindestens eine zweite Glasscheibe nicht oder lediglich teilweise mit einer IR-Strahlung reflektierenden Beschichtung beschichtet sind. Auch kann eine IR-Strahlung reflektierende Beschichtung an beiden Planseiten der jeweiligen Glasscheibe oder lediglich an einer der beiden Planseiten aufgebracht sein.Depending on the requirements of the individual case, the first glass pane arrangement, the first seal, the second glass pane arrangement and the second seal can be designed and arranged in a way that is suitably coordinated with one another, so that the invention can be used advantageously in a large number of conceivable applications. For example, instead of a first glass pane arrangement with only a single first glass pane, a plurality of first glass panes each separated by a thermally insulating intermediate space can be used. In this case, the intermediate space could be filled with air or with another medium in order to achieve thermal insulation between the individual first glass panes. Accordingly, the thickness of the individual first glass pane could be reduced in comparison to a single first glass pane. The same applies to the second glass pane arrangement. It is also possible that in other embodiments of the cooking appliance according to the invention the at least one first glass pane and/or the at least one second glass pane is not or only partially coated with a coating that reflects IR radiation. A coating that reflects IR radiation can also be applied to both flat sides of the respective glass pane or only to one of the two flat sides.

Um die Öffnung in der den Garraum begrenzenden Garraumwand möglichst klein ausführen zu können, kann mindestens eine erste Glasscheibe der ersten Glasscheibenanordnung als eine Sammellinse ausgebildet sein. Die Sammellinse weitet den Strahlengang des Lichtes durch die Öffnung auf. Dies ermöglicht, trotz kleiner Öffnung, den Garraum 6 in den wesentlichen Bereichen auf den mit der Kamera aufgenommenen Bildern vollständig abzubilden. Dies ist auch bei einem verringerten objektseitigen Öffnungswinkel des Objektivs der Kamera möglich. So kann der Bildwinkel von beispielsweise etwa 50° auf beispielsweise etwa 110° vergrößert werden.In order to be able to make the opening in the cooking chamber wall delimiting the cooking chamber as small as possible, at least one first glass pane of the first glass pane arrangement can be used as one be formed converging lens. The converging lens widens the beam path of the light through the opening. Despite the small opening, this enables the cooking chamber 6 to be shown completely in the essential areas on the images recorded with the camera. This is also possible with a reduced object-side aperture angle of the camera lens. The angle of view can thus be increased from, for example, approximately 50° to, for example, approximately 110°.

Claims (11)

  1. Cooking appliance, comprising
    • a housing (2) in which a cooking chamber (6) delimited by a housing wall (4) is arranged,
    • electronics (30) arranged on the housing (2),
    • a camera (8) arranged on the housing (2) and signal-transmittingly connected to the electronics (30), which camera comprises a camera channel (32) image-conductingly connecting the camera (8) to the cooking chamber (6) in order to take pictures of the interior of the cooking chamber (6),
    • in the housing wall (4), an opening (12) for the camera (8), which opening is covered by a first glass pane arrangement (10),
    • a first glass pane arrangement (10) formed at least by a first glass pane (11),
    • and a first seal (18) arranged between the first glass pane arrangement (10) and the housing wall (4), by means of which seal the opening (12) for the camera (8) is sealed in a substantially gas-tight manner,
    the camera channel (32) having a first channel portion (34) and a second channel portion (36), the first channel portion (34) extending from the first glass pane arrangement (10) to a second glass pane arrangement (38) which has at least one second glass pane (40), and the second channel portion (36) extending from the second glass pane arrangement (38) to the camera (8), and the first channel portion (34) and the second channel portion (36) that is separated from the first channel portion (34) by means of the second glass pane arrangement (38) are each sealed with respect to the surroundings of the camera channel (32) in a substantially gas-tight manner,
    characterised in that
    the first channel portion (34) and the second channel portion (36) of the camera channel (32) are designed as separate modular units, the first and the second channel portion (34, 36) being connected to one another in a substantially gas-tight manner by means of at least one second seal (46), and in that the second channel portion (36) of the camera channel (32) is designed as a silicone channel.
  2. Cooking appliance according to claim 1, characterised in that the first seal (18) has a retaining plate (20) and a spring plate (22), the first glass pane arrangement (10) being resiliently clamped between the retaining plate (20) and the spring plate (22).
  3. Cooking appliance according to either claim 1 or claim 2, characterised in that at least one of the at least one first glass pane (11) is designed as a borosilicate glass, preferably as a borosilicate glass coated with at least one coating reflecting IR radiation.
  4. Cooking appliance according to any of claims 1 to 3, characterised in that at least one of the at least one second glass pane (40) is designed as a float glass, preferably as a float glass coated with at least one coating reflecting IR radiation.
  5. Cooking appliance according to any of claims 1 to 5, characterised in that the first seal (18) has an operating temperature range up to 500°C and/or the second seal (46) has an operating temperature range up to 250°C.
  6. Cooking appliance according to either claim 5 or claim 6, characterised in that at least one of the at least one second seal (46) is designed as a glass fibre seal.
  7. Cooking appliance according to any of claims 1 to 7, characterised in that the second glass pane arrangement (38) is fastened to the second channel portion (36).
  8. Cooking appliance according to any of claims 1 to 8, characterised in that the first channel portion (34) is arranged in a region of the housing (2) in which thermal insulation (26) of the cooking chamber (6) is arranged.
  9. Cooking appliance according to any of claims 1 to 9, characterised in that the second channel portion (36) is arranged in a region of the housing (2) in which an air duct (48) for cooling the electronics (30) of the cooking appliance is arranged.
  10. Cooking appliance according to any of claims 1 to 10, characterised in that the camera (8) is arranged on a circuit board (28) of the electronics (30).
  11. Cooking appliance according to any of claims 1 to 11, characterised in that the first channel portion (34) and the second channel portion (36) of the camera channel (32) are of modular design such that the first channel portion (34) can be mounted when the housing wall (4) is mounted and the second channel portion (36) can be mounted when the electronics (30) are mounted.
EP20156888.8A 2019-03-13 2020-02-12 Cooking appliance, comprising a cooking chamber and a camera for creating internal images of the cooking space Active EP3708911B1 (en)

Applications Claiming Priority (1)

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DE102019106401 2019-03-13

Publications (2)

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EP3708911A1 EP3708911A1 (en) 2020-09-16
EP3708911B1 true EP3708911B1 (en) 2022-07-20

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EP20156888.8A Active EP3708911B1 (en) 2019-03-13 2020-02-12 Cooking appliance, comprising a cooking chamber and a camera for creating internal images of the cooking space

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EP (1) EP3708911B1 (en)
ES (1) ES2924049T3 (en)
PL (1) PL3708911T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008308659A (en) * 2007-05-14 2008-12-25 Fujifilm Corp Composition for forming hydrophilic film, hydrophilic member and method for producing hydrophilic member
CN101435601B (en) * 2008-12-12 2011-03-23 申家群 Non-radiation microwave oven
AU2016321324B2 (en) * 2015-09-10 2022-06-02 Brava Home, Inc. In-oven camera
DE102016124312A1 (en) 2016-12-14 2018-06-14 Miele & Cie. Kg Cooking device with a camera
DE102017220886A1 (en) * 2017-11-22 2019-05-23 BSH Hausgeräte GmbH Oven with sensor device and fan

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ES2924049T3 (en) 2022-10-04
PL3708911T3 (en) 2022-09-26
EP3708911A1 (en) 2020-09-16

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