Cooking appliance

Abstract

Cooking appliance (1) with at least one cooking chamber (2) and at least one door device (3) for closing a loading opening (12) of the cooking chamber (2), wherein the door device (3) has at least one window device (13) with at least one viewing window (23) for looking into the cooking chamber (2), characterized in that the door device (3) comprises at least one viewing protection device (4) with at least two viewing protection elements (14, 24) which can be retracted from opposite sides (230, 231) into the viewing window (23) by means of at least one motor drive device (5).

Description

The present invention relates to a cooking appliance having at least one cooking chamber and at least one door device for closing a charging opening of the cooking chamber.Cooking devices are known from the publications DE 23 09 563 B2 and DE 10 2009 046 208 A1.Modern cooking appliances are often intended to be as completely different in their optical appearance from the surrounding furniture fronts and other built-in appliances as possible. A uniform appearance of cooking appliances and furniture fronts generally supports an overall impression of the kitchen that is particularly appealing visually. In particular, the see-through regions in the cooking chamber should not differ as much as possible from the surrounding regions, in order to avoid the impression of a high-contrast, dark window in the cooking chamber. In the case of appliance and furniture fronts with a very dark coloring, this is usually successful satisfactorily, since the unexposed cooking chamber likewise appears dark.However, in cooking devices with a lighter coloring or with stainless steel fronts, there is still a considerable need for improvement. For example, in such cooking appliances, the window to the cooking chamber is often likewise printed with a lighter color. However, since good viewing into the cooking chamber is desired during the cooking processes, as a rule only very limited printing of the see-through region can take place. As a result, the see-through regions in the cooking chamber of lighter built-in devices regularly differentiate particularly clearly from their surroundings, so that a uniform appearance is not possible.It is therefore the object of the present invention to enable a reliable view into the cooking chamber and to counteract a disturbance of the overall visual impression through the cooking chamber.This object is achieved by a cooking appliance having the features of claim 1. Further advantages and features are evident from the general description of the invention and the description of the exemplary embodiments.The cooking appliance according to the invention comprises at least one cooking chamber and at least one door device for closing a charging opening of the cooking chamber. In particular, the cooking appliance is designed as an oven. The door device comprises at least one window device with at least one viewing window for viewing into the cooking chamber. The door device has at least one visual protection device. The visual protection device comprises at least two visual protection elements. The visual protection elements can be moved from opposite sides into the viewing window by means of at least one motor-driven drive device. It is particularly preferred that one of the at least two visual protection elements can be moved into the viewing window from one side and the other of the at least two visual protection elements can be moved into the viewing window from another, opposite side.The cooking appliance according to the invention has many advantages. A considerable advantage is that at least one visual protection device with at least two retractable visual protection elements is present. By means of such a visual protection device, the view into the cooking chamber can be influenced in such a way that the uniform overall appearance of the cooking appliance is not interrupted by the view into the cooking chamber. The retractability of the visual protection elements is particularly advantageous, so that the view into the cooking chamber can be selectively enabled or disabled. Such visual protection elements also have the advantage that in the open state, an unhindered and clear view through the viewing window is possible. In the closed state, the visual protection elements offer the advantage that the viewing window can be closed reliably and in a view-tight manner. The motorized drive device offers the advantage that the retraction of the visual protection elements is particularly comfortable and simple for the user. The retraction of two opposite sides likewise offers an advantage, since a particularly high closing rate of the visual protection device is thus achieved. As a result, the masking or release of the viewing window can take place in a period of time that is only imperceptible to the user. For example, the closing process takes only a few seconds and preferably one second or less.Particularly preferably, the visual protection elements are designed to be opaque and in particular opaque. The visual protection elements can also have transparent and / or transparent sections.The drive device is in particular at least partially automatically controlled. For example, the drive device can be controlled as a function of an operating state and / or an operating program. Preferably, the drive device is operatively connected to at least one control device of the cooking appliance. In particular, the visual protection elements are retracted into the viewing window when the cooking chamber is not in use. The visual protection elements are preferably moved out of the viewing window when an operating function is used with the use of the cooking chamber. In particular, the drive device can be activated when the cooking appliance or an operating function is switched on and / or by switching on illumination in the cooking chamber, so that the view into the cooking chamber is enabled. The drive device can also be designed to be manually controllable. For example, by actuating at least one operating element, the view can be enabled and / or prevented. This has the advantage that the user himself can decide whether he would like to have the cooking chamber visible or concealed behind the visual protection device.It is possible for the drive device to comprise at least one safety coupling. The safety coupling is designed, for example, as a slip clutch. The safety coupling is in particular suitable and designed to decouple the drive device from a movement of the visual protection elements if a threshold value for a specific force and / or torque is exceeded.In a particularly preferred embodiment, the visual protection elements can be moved in from the opposite longitudinal sides of the viewing window. In this case, the longitudinal sides are in particular longer than the broad sides. In particular, the viewing window is rectangular in this case. Such a configuration offers the advantage of a particularly short travel path, so that very fast opening and closing times can be achieved. The longitudinal sides are in particular the sides which extend parallel to an underside and / or upper side of the cooking appliance. Particularly preferably, the visual protection elements can be moved into the viewing window from above and below. The terms top and bottom refer to a closed door device and to a cooking appliance set up as intended. Such retraction is selected in particular when the upper and the lower side of the viewing window are longer than the other sides.Preferably, the visual protection elements are accommodated movably with at least one end section in at least one guide device. Particularly preferably, each of the visual protection elements has at least two end sections, which are accommodated in a respective guide device. For example, a visual protection element is designed as an elongate planar component which has two opposite longitudinal sides and two opposite broad sides. The end sections are preferably located in the region of the broad sides. It is possible that the broad side is suitable and configured to be accommodated in the guide device. However, it is also possible for the longitudinal sides to be receivable in the guide device. A guide element for accommodation in the guide device can also be fastened to the end section.The guide device is in particular designed as at least one elongate guide profile or comprises at least one such. The guide profile has at least one elongate guide space, into which an end section can be moved along a predetermined axis. The guide space can be formed, for example, as a groove. In particular, the end section is at least partially received in a form-fitting manner in the guide device, so that the end section is prevented from slipping out of the guide device. Such embodiments have the advantage that the retraction and extension of the visual protection elements can be carried out in a particularly permanent and reliable manner.The drive device preferably comprises at least one traction drive, to which at least one of the two visual protection elements is fastened. It is possible that at least one traction drive is provided for each visual protection element. Preferably, at least two traction drives, in particular those which can be operated in parallel or synchronously, are provided for each visual protection element. In particular, the traction drives can be operated in the same direction and / or at the same rotational speed. Preferably, the visual protection element is fastened with at least one end section to one of the two traction drives. It is preferred that the at least two visual protection elements are fastened to at least one common traction drive. Preferably, the two visual protection elements are fastened with their end sections to two common traction drives, in particular drives operable in parallel. In particular, the two visual protection elements are fastened to different strands of the traction drive.The visual protection elements can be fastened directly to the traction drive. It is also possible for at least one coupling element to be provided, which is connected to the traction drive and which is suitable and designed to be connected to the visual protection element. The traction drive is preferably designed as a belt drive or chain drive. The traction drive comprises in particular at least one belt and / or at least one chain. In particular, the traction drive is designed as an endless strand. Such traction drives offer an inexpensive and permanently reliable possibility of moving the visual protection elements.The traction drive can preferably be driven by at least one drive motor. Preferably, an electric motor is provided. In this case, the traction drive can preferably be driven in at least two directions. For example, the drive motor is suitable and designed to be operated in at least two rotational directions. At least one transmission device can also be provided, which converts a rotational direction of the drive motor into a desired direction of movement of the traction drive.In a further particularly preferred embodiment, at least one of the at least two visual protection elements comprises at least two slats. Preferably, each of the visual protection elements comprises at least two slats. It is also possible for the visual protection elements to each comprise at least three or four or five or a plurality of slats. The visual protection elements may differ in the number of lamellae. The slat is in particular designed as an elongated surface component, in which the length is a multiple of the width. For example, the length of the lamella is at least four times the width and preferably at least five times or particularly preferably at least six times or a multiple of the width. For example, the lamella is formed from an in particular opaque plastic material and / or metal material. For example, the slat is made of a metal sheet and has a thickness between 0.1 mm and four millimeters. In particular, the slat is made of a steel sheet having a thickness of 1 mm. An aluminium sheet is also possible. The lamella can be designed as a shaped part and have, for example, treatises, recesses and / or applications. Such slats can be accommodated particularly well in the existing installation space of a door device and additionally represent cost-effective components.The slats of a visual protection element can be moved in particular over one another. For example, the slats are moved over one another in a position exposing the viewing window. Such a configuration has the advantage that the lamellae can be accommodated in a particularly space-saving manner when the viewing window is released. It is also possible for the slats of different visual protection elements to be movable one above the other. Preferably, the slats of different visual protection elements cannot be moved over one another.It is preferred that, in the case of a concealed viewing window, the slats of a visual protection element are inserted into the viewing window to different extents. Such a configuration has the advantage that the lamellae complement one another in terms of their visual protection effect. As a result, larger viewing windows can also be covered by two or more slats without the slats themselves representing large components which are difficult to accommodate. Particularly preferably, the slats of a visual protection region have a travel path of different lengths. In particular, the drive device is suitable and designed to retract the slats of a visual protection element to different extents into the viewing window. In particular, the slats of a viewing window are fully extended out of the viewing window when viewing is enabled.Preferably, the slats of a visual protection element are arranged on a separate traction drive in each case. By means of such a configuration, a displacement of the slats to different extents can be implemented in a particularly inexpensive and reliable manner. In particular, the slats of a visual protection element are fastened to two separate traction means drives in each case. In particular, two parallel arranged traction drives are provided for the one slat and two parallel arranged traction drives are provided for the other slat.The separate traction drives, on which the slats of a visual protection element are arranged, can be driven in particular at a different rotational speed. In particular, the separate traction drives are suitable and configured to move the slats of a visual protection element at different speeds. This has the advantage that both lamellae of a visual protection element arrive at their position in the viewing window as simultaneously as possible and in particular simultaneously. This allows very rapid opening and closing of the viewing window. For this purpose, different drive motors can be provided, for example. It is also possible for gear reductions or gear ratios to be provided.In an advantageous and preferred development, the traction drives are guided on drive wheels with different diameters. Such a configuration offers a possibility of a different speed travelability of slats of a visual protection element that can be implemented with reduced structural complexity. In particular, an identical rotational speed is provided for the drive wheels. The different diameter thus results in a different positioning of the plates at the same rotational speed of the drive wheels for a given travel duration. The diameter is preferably matched to a rotational speed of the drive shaft and / or of the drive motor and to a desired travel speed of the plates. However, it is also possible for the separate traction drives to be guided on drive wheels having the same diameter. The drive wheels are then preferably driven at different speeds. The drive wheel is preferably designed as a belt pulley. It is also possible for the pulley to be designed as a sprocket. The drive wheel is in particular fixed in a rotationally fixed manner on at least one drive shaft. It is possible for the drive wheel to have a freewheel in one direction.The drive wheels with different diameters are preferably arranged on a common drive shaft. This has the advantage that a drive motor is sufficient for the different positioning of the slats of a visual protection element. It is also possible for two or more drive shafts to be provided. In addition, a common drive shaft enables a particularly synchronous drive of the traction drives. The drive wheels are arranged in particular rotationally fixedly on the common drive shaft. It is possible that a rotational speed of the drive motor is transmitted and / or reduced to a desired rotational speed of the drive shaft by means of at least one transmission device.In a further embodiment, it is provided that of the at least two visual protection elements, at least one slat is arranged on a common traction drive. In particular, a slat of the one visual protection device is fastened to the traction drive, to which at least one slat of the other visual protection element is also fastened. Particularly preferably, the slats of the at least two visual protection elements are arranged on the common traction drive, which assume the same positions on the opposite sides of the viewing window. For example, the two outer plates of the two visual protection elements are arranged on a common traction drive. In particular, the two inner plates are likewise arranged on a common traction mechanism drive. In particular, the slats are arranged on a common traction drive, which cover a substantially identical and in particular identical travel path in order to change from an open to a closed position.Particularly preferably, the plates, which are arranged on a common traction drive, are fastened to opposite runs of the common traction drive. The arrangement of the slats on the common traction drive is suitable and designed to move the slats towards or away from one another for a given direction of rotation of the traction drive. This has the advantage that the slats can be reliably moved toward one another from the opposite sides of the viewing window by means of a common traction drive and away from one another in the event of a reversal of the direction of rotation.In all embodiments, it is preferred that the door device comprises at least one outer pane arranged on its outer side. It is also preferred that the door device comprises at least one inner pane that closes off from the cooking chamber. In this case, the visual protection elements are arranged such that they can be moved in particular between the inner pane and the outer pane. This allows a particularly space-saving accommodation of the visual protection device and also supports the insulating effect of the door device. Particularly preferably, the door device is designed as a multi-pane door. In particular, the inner pane and / or the outer pane are accommodated on at least one carrier device. The carrier device is suitable and designed to space the inner pane and the outer pane from one another, so that an intermediate space is created for receiving the visual protection element.In an advantageous development, the visual protection device comprises at least one cassette module. The cassette module is suitable and designed in particular for accommodating at least two components of the visual protection device and for permitting modularized installation. The components are preferably fastened to the cassette module at least indirectly and in particular directly. As a result, the installation of the visual protection device in an existing door device is considerably simplified. In addition, the visual protection device can be retrofitted in a particularly inexpensive manner. It can be provided that one or more panes or other components are removed from the door device. In particular, the cassette module comprises at least two components of the visual protection device, which are taken from a group of components, comprising: a visual protection element and preferably both visual protection elements, the slats of the visual protection elements, guide device, drive device, traction drive, drive shaft, drive wheels, rollers, receiving device, base frame, cover frame.Preferably, the cassette module is suitable and designed to be installed in an intermediate space between the inner pane and the outer pane of the door device. For example, the cassette module is inserted between the inner and outer panes and fastened to a carrier element of the door device.Further advantages and features of the present invention result from the exemplary embodiments which are explained below with reference to the attached figures.The figures show: FIG. 1 shows a cooking appliance according to the invention; FIG. 2 shows a schematic illustration of a visual protection device in a side view; FIG. 3 shows a door device with a visual protection device in a cut-away perspective view; FIG. 4 shows a section of the door device from FIG. 3 in a sectional side view; FIG. 5 shows a section of the door device from FIG. 3 in a cut-away perspective view; and FIG. 6 shows a view protection device in a perspective illustration.FIG. 1 shows an exemplary embodiment of a cooking appliance 1 according to the invention, which is designed here as an installed appliance. For this purpose, the cooking appliance can be surrounded in the installed state by one or more furniture fronts, which are not illustrated here. The cooking appliance 1 is equipped with a heatable cooking chamber 2, the charging opening 12 of which can be closed by a door device 3. The cooking chamber 2 is designed in particular as an oven. The door device 3 has a window device 13 with a viewing window 23 for viewing into the cooking chamber 2. the door device 3 has a handle 63 here. By means of an operating device 11, the cooking appliance 1 can be operated by a user, so that, for example, operating modes and / or program sequences can be set. The operating device 11 can also be designed to operate the visual protection device 4.In order to be able to provide the front region and in particular the door device 3 of the cooking appliance 1 with a uniform overall appearance, a visual protection device 4 is provided. The visual protection device 4 is here partially not arranged in a visible manner in the door device 3 and comprises two visual protection elements 14, 24, which can be moved into the viewing window 23 from two opposite sides. The visual protection elements 14, 24 are here moved into the viewing window 23 from above and below. For the purpose of illustration, the visual protection elements 14, 24 are only partially moved into the viewing window 23, so that a view into the cooking chamber 2 is still possible.The vision protection device 4 serves to align the area of view through the cooking chamber 2 as far as possible with the surrounding area, for example with the surface of the door device 3 and / or the appliance front and / or the surrounding furniture fronts. For this purpose, the visual protection elements 14, 24 and in particular the slats are configured in a similar and preferred manner in the same coloring as the appliance front. The impression of a dark window is thus effectively avoided when the visual protection elements 14, 24 have been moved into the viewing window 23. In order to allow a good view of a product to be cooked located in the cooking chamber 2, the visual protection elements 14, 24 can be moved out of the viewing window via a motor-driven drive device 5. The visual protection device 4 is here coupled to at least one control device of the cooking appliance 1. As a result, the view can be enabled, for example, directly upon switching on or in certain operating states. In addition, for example, when the cooking appliance 1 is switched off, the cooking chamber 2 can be concealed.In the example shown here, the visual protection elements 14, 24 can be retracted from opposite longitudinal sides 230, 231. In this case, the viewing window 23 has a rectangular format in which the longitudinal sides 230, 231 are considerably longer than the corresponding broad sides. By such an arrangement of the visual protection elements 14, 24, a particularly rapid release or masking of the view into the cooking chamber 2 can take place, since the method paths are kept correspondingly short. The visual protection elements 14, 24 are accommodated here with their end sections 146, 246 in a guide device 6. The guide device 6 is designed, for example, as a guide rail 16 and is not arranged here so as to be visible outside the viewing window 23 of the door device 3.FIG. 2 shows a highly schematic view protection device 4 with two view protection elements 14, 24, each of which comprises two lamellae 141, 142, 241, 242. For moving the visual protection elements 14, 24, a motor-driven drive device 5 is provided here, which comprises two traction drives 15, 25 each formed with a toothed belt. The traction drives 15, 25 are driven by a respective drive wheel 150, 250. The drive wheels 150, 250 have different diameters and are fixed in a rotationally fixed manner on a common drive shaft 55. The traction drives 15, 25 are furthermore guided via a respective roller 651, 652 designed as a pulley. The rollers 651, 652 are arranged here on a common shaft 65. The rollers 651, 652 can, however, also be arranged freely rotatably on a common axis or on separate axes.Each of the two traction drives 15, 25 has, in the section between the drive wheel 150, 250 and the roller 651, 652, two freely suspended runs 151, 152, 251, 252, to which the plates 241, 242 are fastened via driver elements 85. For example, the driver elements 85 are screwed to the toothed belt. In the arrangement shown here, a slat 142 of the upper visual protection element 14 is fastened to a common traction drive 15 by a slat 241 of the lower visual protection element 24. This results in an identical travel speed for these slats 142, 241. Correspondingly, the respective other slats 141, 242 of the two visual protection elements 14, 24 are arranged jointly on the other traction drive 25. Thus, an identical travel speed is also obtained for these slats.Due to the different diameters of the drive wheels 150, 250, the two inner plates 142, 241 are moved at a higher speed than the two outer plates 141, 242 in the example shown here. Due to the different travel speeds, at a given rotational speed of the shaft device 55, the slats 141, 142, 241, 242 of a visual protection element 14, 24 reach their end position at the same time. Thus, the slats of a visual protection element 14, 24 reach their fully extended or fully retracted position at substantially the same time. As a result, the view into the cooking chamber 2 can be released or blocked in a very short time and for example in less than one second.By means of the drive wheels 150, 250 with different diameters, the different travel speeds can be achieved with only one drive shaft 55. By arranging slats belonging to different visual protection elements 14, 24 on opposite runs of the same traction drive, an opposite direction of travel of these slats is achieved. As a result, the slats 241, 242 arranged here at the bottom can be moved downward, for example, in a common direction, while the upper slats 141, 142 are moved upward. Thus, using only one common drive shaft 55, the viewing window 23 can be closed or opened starting from two opposite sides 230, 231, so that an even faster closure rate results.FIGS. 3-6 show a door device 3 with a visual protection device 4 of a cooking appliance 1 according to the invention by way of example.The door device 3 is designed as a multi-pane door and has an outer pane 33 here, to which 2 opposite carrier elements 73 are fastened and, for example, glued. The carrier elements 73 are designed here as profile strips and carry an inner pane 43 that closes off from the cooking chamber 2. an intermediate space 53 is formed between the inner pane 43 and the outer pane 33, in which the visual protection device 4 is arranged. The visual protection device 4 is designed here as a cassette module 400, which has been inserted into the intermediate space in a pre-assembled manner together with the associated components and is ready for operation after connection to a control device of the cooking appliance 1.The vision protection device 4 here comprises two vision protection elements 14, 24 which can be moved in from opposite sides 230, 231 and each have two slats 141, 142, 241, 242. The lamellae are here formed as a shaped part made of a metal sheet. For example, the slats are manufactured from a steel sheet or an aluminum sheet. The slats can also be manufactured from a plastic material. The plates are connected here either directly or via driver elements 85 to the corresponding traction drive mechanisms 15, 25, 35, 45. The driver elements 85 are here formed integrally with the slats. In this case, the driver elements 85 are correspondingly shaped sections of the slats. The driver elements 85 are each designed here such that the slats of a visual protection element 14, 24 can be moved one above the other. For this purpose, the driver elements 85 of the plates 241, 242 engage around the respective associated traction means drives 15, 25, 35, 45.In order to ensure the most uniform and parallel possible movement of the slats, a guide device 6 is provided. The guide device 6 here comprises 2 guide rails 16, in which the end sections 146, 246 of the slats are guided in corresponding guide grooves. The guide rails are made of a plastic material and, for example, of a PTFE material. The guide rails 16 are fastened here to the receiving device 7.The receiving device 7 serves to receive the components of the visual protection device 4 and here comprises a base frame 17 and a cover frame 27. The drive motor is likewise fastened to the receiving device 7. The receiving device 7 itself is mounted on the door device 3 and is arranged here, for example, between the two carrier elements 73. For example, the receiving device 7 can be fastened to the carrier elements 73 and / or to the outer pane 33 and / or to the inner pane 43. The inner pane 43 can also be fastened to the receiving device 7 and in particular to the base frame 17 and / or to the cover frame 27.The receiving device 7 is designed here as a cassette module 400 for modularized mounting of the associated components. The visual protection elements 14, 24 are movably accommodated on the cassette module 400. In addition, the components of the drive device 5, such as the traction drives, the drive shaft 55 and the drive motor 75, are mounted on the cassette module 400. As a result, the visual protection device 4 presented here can be integrated in a door device 3 in a particularly simple manner. For this purpose, only the cassette module 400 has to be inserted into the door device 3, which is effected, for example, between the outer pane 33 and the inner pane 43. For example, the cassette module 400 is additionally fastened to the door device 3 and, for example, to the carrier elements 73. Preferably, a connection to a control device of the cooking appliance 1 is also provided.For moving the visual protection elements 14, 24, a motor-driven drive device 5 with a drive motor 75 is provided here, which is designed, for example, as an electric motor. The drive motor 75 drives a drive shaft 55. The drive motor 75 can be connected to the drive shaft 55 via a belt transmission 750, as shown in FIG. 3, for example. However, the drive motor 75 can also drive the drive shaft 55 via a toothed gearing 752, as shown for example in FIGS. 4 and 6. Here, the drive motor 75 comprises a gearwheel 753 which is arranged on the motor shaft 751 in a rotationally fixed manner and which drives a gearwheel 754 arranged on the drive shaft 55 in a rotationally fixed manner. The drive shaft 55 is preferably rotatably mounted in the receiving device 7.The drive wheels 150, 250, 350, 450 are arranged on the drive shaft 55 in a rotationally fixed manner. The drive wheels 150 and 350 have the same diameter and drive the two parallel traction drives 15, 35. Arranged on these traction drives 15, 35 are the plates 142, 241 which are respectively located further inward and are moved at a correspondingly higher travel speed.On the other side of the drive shaft 55, the drive wheels 250, 450 are located with a smaller diameter. The two traction drives 25, 45 located here on the outside are driven via these drive wheels 250, 450. The two outer plates 141, 242 are fastened to these traction drives 25, 45. These slats 141, 242 must cover a shortened travel path when the viewing window 23 is opened and closed compared to the other two slats 142, 241, so that these are moved at a correspondingly lower travel speed. Therefore, these plates 141, 242 are arranged on the traction drives 25, 45 which are driven by the drive wheels 250, 450 with a smaller diameter. The traction drives here also run via non-driven rollers 651, 652, which are arranged on a common shaft 65. The shaft 65 is rotatably mounted in the receiving device 7. The rollers 651, 652 can, however, also be rotatably mounted on the shaft 65, so that this is embodied, for example, as a rigid axle.In order to enable the drive device 5 to be shut down when the slats are reached in a desired position, two sensors 8, 18 are provided here. The sensors 8, 18 are designed as microswitches and are fastened to the receiving device 7. If the slat 241 reaches its end position for the position covering the viewing window 23, the switch of the sensor 8 is triggered by the driver element 85 connected to the slat. As a result, the drive remains stationary. If, on the other hand, the slat 241 reaches its end position for the position exposing the viewing window 23, the switch of the sensor 18 is triggered by the driver element 85 connected to the slat. This achieves accurate and complete opening and closing of the visual protection device 4. In addition, the travel path can be adjusted by adjusting the position of the sensors 8, 18. Further sensors for the other plates can also be provided.List of reference characters1 Cooking appliance 2 Cooking chamber 3 Door device 4 Visual protection device 5 Drive device 6 Guide device 7 Receiving device 8 Sensor 11 Operating device 12 Charging opening 13 Window device 14 Visual protection element 15 Traction drive 16 Guide rail 17 Base frame 18 Sensor 23 Viewing window 24 Visual protection element 25 Traction drive 27 Cover frame 33 Outer pane 35 Traction drive 43 Inner pane 45 Traction drive 53 Intermediate space 55 Drive shaft 63 Handle 65 Shaft 73 Carrier element 75 Drive motor 85 Driver element 141 Slat 142 Slat 146 End section 150 Drive wheel 151 Strand 152 Strand 230 Side 231 Side 241 Slat 242 Slat 246 End section 250 Drive wheel 251 Strand 252 Strand 350 Drive wheel 351 Strand 352 Strand 400 Cassette module 450 Drive wheel 451 Strand 452 Strand 651 Roller 652 Roller 750 Belt transmission 751 Motor shaft 752 Gear Drive 753 Gear 754 Gear

Claims

Cooking appliance (1) having at least one cooking chamber (2) and at least one door device (3) for closing a charging opening (12) of the cooking chamber (2), wherein the door device (3) has at least one window device (13) having at least one viewing window (23) for viewing into the cooking chamber (2), characterized in that the door device (3) comprises at least one visual protection device (4) having at least two visual protection elements (14, 24) which can be moved into the viewing window (23) from opposite sides (230, 231) by means of at least one motorized drive device (5).Cooking appliance (1) according to claim 1, characterised in that the visual protection elements (14, 24) can be moved in from the longitudinal sides (230, 231) of the viewing window (23).Cooking appliance (1) according to the preceding claim, characterised in that the visual protection elements (14, 24) are movably accommodated in at least one guide device (6) by at least one end section (146, 246) in each case.Cooking appliance (1) according to one of the preceding claims, characterized in that the drive device (5) comprises at least one traction drive (15, 25, 35, 45), which can be driven by at least one drive motor (75) and to which at least one of the two visual protection elements (14, 24) is fastened.Cooking appliance (1) according to one of the preceding claims, characterized in that a visual protection element (14, 24) comprises at least two slats (141, 142, 241, 242).Cooking appliance (1) according to the preceding claim, characterised in that the slats (141, 142, 241, 242) of a visual protection element (14, 24) can be moved over one another.Cooking appliance (1) according to one of the two preceding claims, characterized in that, in the case of a concealed viewing window (23), the slats (141, 142, 241, 242) of a visual protection element (14, 24) are inserted into the viewing window (23) to different extents.Cooking appliance (1) according to claim 4 and one of claims 5 to 7, characterised in that the slats (141, 142, 241, 242) of a visual protection element (14, 24) are arranged on a separate traction drive (15, 25, 35, 45) in each case.Cooking appliance (1) according to the preceding claim, characterised in that the traction drives (15, 25, 35, 45) can be driven at a different rotational speed, so that the slats (141, 142, 241, 242) of a visual protection element (14, 24) can be moved at different speeds.Cooking appliance (1) according to the preceding claim, characterised in that the traction drives (15, 25, 35, 45) are guided on drive wheels (150, 250, 350, 450) with different diameters.Cooking appliance (1) according to the preceding claim, characterized in that the drive wheels (150, 250, 350, 450) with different diameters are arranged on a common drive shaft (55).Cooking appliance (1) according to one of the preceding claims, characterized in that of the at least two visual protection elements (14, 24), a slat (141, 142, 241, 242) is arranged in each case on a common traction drive (15, 25, 35, 45).Cooking appliance (1) according to the preceding claim, characterized in that the slats (141, 142, 241, 242) are arranged on opposite runs (151, 152, 251, 252, 351, 352, 451, 452) of the common traction drive (15, 25, 35, 45), such that the slats (141, 142, 241, 242) can be moved towards one another from the opposite sides (230, 231) of the viewing window (23).Cooking appliance (1) according to one of the preceding claims, characterized in that the door device (3) comprises at least one outer pane (33) arranged on its outer side and at least one inner pane (43) closing off from the cooking chamber (2), and in that the visual protection elements (14, 24) are arranged between the inner pane (43) and the outer pane (33).Cooking appliance (1) according to one of the preceding claims, characterized in that the visual protection device (4) comprises at least one cassette module (400) for modularized mounting of at least two components of the visual protection device (4), wherein the components are taken from a group of components comprising at least one visual protection element (14, 24) of the at least two visual protection elements (14, 24) and a slat (141, 142, 241, 242) and a guide device (6) and a drive device (5) and a traction drive (15, 25, 35, 45) and a drive motor (75).

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