Cooktop system

Abstract

A hob system (1) with a cooking product support (4) for supporting cooking product (6), at least one heating unit (5) arranged on the cooking product support (4) for heating the cooking product (6) and an extractor device (3) for extracting cooking fumes downwards, wherein a total width (B) of the hob system (1) is a maximum of 600 mm.

Description

[0001] The present patent application claims priority from German patent application DE 10 2019 202 088.7, the contents of which are incorporated herein by reference.

[0002] The invention relates to a cooktop system. Furthermore, the invention relates to a kitchen workstation with such a cooktop system.

[0003] From WO 2012 / 146237 A1, a cooker hood for extracting cooking fumes downwards is known. The cooktop system has an inlet opening through which the cooking fumes are extracted. This inlet opening is located in a central area of ​​the cooktop system for efficient extraction of the cooking fumes. A disadvantage is that such an arrangement of the inlet opening leads to an increased requirement for installation space in the horizontal direction.

[0004] One of the aims of the invention is to improve a cooktop system.

[0005] This task is solved by a cooktop system comprising a cooking support for holding cooking food, at least one heating unit arranged on the cooking support for heating the cooking food and a ventilation device for extracting cooking fumes downwards.

[0006] Preferably, the cooktop system can have a user interface arranged on the cooking surface, wherein the cooktop system is preferably designed to be installed in a kitchen base cabinet and / or in a kitchen worktop in different orientations. For this purpose, the user interface can be rotationally symmetrical and / or be arranged in different orientations on the cooking surface and / or be reversibly pivotable on the cooking surface and / or include a screen designed for reversibly pivotable display of control information.

[0007] Preferably, the total width of the cooktop system can be a maximum of 600 mm. According to the invention, it has been determined that the cooktop system, comprising a cooking surface, at least one heating element, and a downward-facing extractor for cooking fumes, must have a total width of no more than 600 mm to allow for particularly flexible use and installation. Such a cooktop system enables particularly intensive use of the space available in a kitchen. Especially in urban areas with increasingly smaller living units, such a cooktop system can contribute to more efficient and comfortable use of living space, particularly by reducing the required work surface. It is especially advantageous that such a cooktop system can be installed in a kitchen base cabinet with a maximum storage width of 600 mm, thus significantly increasing design freedom in kitchen planning.

[0008] According to one aspect of the invention, the cooktop system comprises at least two heating units, in particular at least three heating units, and in particular at least four heating units. The at least one heating unit can be configured as a radiant heating unit and / or as an induction heating unit and / or as a mass heating unit and / or as a teppanyaki heating unit. In particular, the at least one heating unit can be configured for operation with electrical energy and / or with fuel gas.

[0009] According to one aspect of the invention, the overall width of the cooktop system, including the cooking support, all heating elements, and the extractor hood, in particular a fan and / or a negative pressure duct section, is a maximum of 600 mm, in particular a maximum of 580 mm, in particular a maximum of 560 mm, in particular a maximum of 500 mm, in particular a maximum of 450 mm, in particular a maximum of 400 mm, in particular a maximum of 350 mm, in particular a maximum of 300 mm. The overall depth of the cooktop system, including the cooking support, all heating elements, and the extractor hood, in particular a fan and / or a negative pressure duct section, is preferably a maximum of 600 mm, in particular a maximum of 550 mm, in particular a maximum of 515 mm, in particular a maximum of 500 mm, in particular a maximum of 450 mm. According to a particularly preferred embodiment, the overall width is a maximum of 560 mm and the overall depth is a maximum of 515 mm.The overall width of the cooktop system is defined as the extent of the cooktop system parallel to a user-facing front edge of the cooktop system, particularly of the cooking surface, especially in a horizontal plane. The overall depth is defined as the extent of the cooktop system perpendicular to a user-facing front edge of the cooktop system, particularly of the cooking surface, especially in a horizontal plane.

[0010] According to one aspect of the invention, the ratio between the total depth and the total width is at least 0.8, in particular at least 0.9, in particular at least 1, in particular at least 1.2, in particular at least 1.5, in particular at least 1.8.

[0011] According to a further aspect of the invention, the extractor fan has an inlet opening through which the cooking fumes are extracted. The inlet opening can, for example, be located directly adjacent to an edge area of ​​the cooking surface or at a distance from it.

[0012] The inlet opening can be round in a top view, in particular non-circular or circular and / or oval or in the form of a polygon, in particular in the form of a triangle or in the form of a quadrilateral or in the form of a pentagon or in the form of a hexagon.

[0013] According to one aspect of the invention, the cooktop system comprises power electronics for supplying electrical power to the at least one heating unit. The power electronics preferably comprise at least one, in particular at least two, and in particular at least three power electronics boards. A separate, independent power electronics board can be provided for each of the heating units. Preferably, at least one power electronics board is configured to supply electrical power to two of the heating units. Alternatively, all of the power electronics boards can be configured to supply two or more heating units. The heating units are preferably induction heating units. Accordingly, the power electronics can include induction generators.The arrangement of the power electronics on separate power electronics boards offers the advantage of being particularly compact and, in particular, particularly flexible in terms of their arrangement relative to the other components of the cooktop system.

[0014] According to a further aspect of the invention, at least one of the power electronics boards is vertically oriented and / or at least one of the power electronics boards is horizontally oriented. At least one of the power electronics boards can also be oriented obliquely to a vertical direction and to a horizontal plane. This advantageously allows the power electronics boards to be arranged with particular flexibility and thus in a space-saving manner.

[0015] Preferably, at least one cooling fan is provided for cooling the power electronics. Preferably, at least one cooling fan is arranged on each of at least two of the power electronics boards. This allows for particularly effective and efficient cooling of the power electronics.

[0016] According to one aspect of the invention, at least two power electronics boards are provided which are connected to each other for signal transmission and / or power transmission. The connection can be made by means of a flexible cable connection and / or by means of rigid conductor rails.

[0017] Preferably, a heat sink is provided on the power electronics, in particular on at least two, and especially on all, power electronics boards. This enables effective cooling of several power electronics boards using only a smaller number of cooling fans, in particular only one cooling fan.

[0018] Preferably, the power electronics are designed to supply electrical power to the at least one heating unit and the extractor hood, in particular the at least one fan. For example, a fan control for the extractor hood can be integrated into the power electronics. In particular, the power electronics for supplying electrical power to the extractor hood can be arranged on the same power electronics board as the power electronics for the at least one heating unit. Such a design is particularly space-saving and economical. Preferably, at least one interface is provided on the at least one power electronics board for connecting external elements, such as a window tilt sensor and / or a user interface.

[0019] The at least one power electronics board is preferably arranged in a top view at an edge of the cooktop system. The at least one power electronics board is preferably spaced a maximum of 50 mm, and in particular a maximum of 20 mm, from an outer edge of the cooktop system. This leaves a central area of ​​the cooktop system available for the downward extraction of cooking fumes. For example, the at least one power electronics board can be arranged in a front edge area, a rear edge area, and / or a side edge area of ​​the cooktop system.

[0020] According to another aspect of the invention, at least two power electronics housings are provided to accommodate at least one of the power electronics boards each.

[0021] According to a further aspect of the invention, at least one partition is provided between two of the power electronics boards. The partition can be part of the at least one power electronics housing. The partition can be designed to shield the respective power electronics board from magnetic fields and / or electromagnetic radiation and / or moisture.

[0022] According to a further aspect of the invention, the power electronics housing is formed in one piece, particularly integrally, and especially in a material-bonded manner, with a cooking fume duct, in particular a negative pressure duct section and / or a positive pressure duct section, of the extractor hood. The power electronics housing can be thermally conductive, and in particular gas-tight with respect to the cooking fume duct, and / or flow-conducting. Advantageously, this allows the cooking fume flow to be used for cooling the power electronics. For example, a control device for controlling the electronic fans can be designed such that the electronic fans are controlled depending on the cooking fume extraction. The cooktop system can thus be operated in a particularly energy-efficient manner.

[0023] According to a further aspect of the invention, a dimension, particularly in the main direction of extension, and / or a diameter of a cooking zone that can be heated by means of the at least one heating unit is in the range of 50 mm to 300 mm, in particular from 60 mm to 250 mm, and in particular from 75 mm to 220 mm. Preferably, the diameter of the induction coils of the respective heating unit is in the range of 50 mm to 300 mm, in particular from 60 mm to 250 mm, and in particular from 75 mm to 220 mm. Preferably, the main direction of extension of at least one cooking zone and / or the diameter of at least one induction coil is in the range of 50 mm to 120 mm, in particular from 60 mm to 100 mm, and in particular from 70 mm to 90 mm. Preferably, such an induction coil is designed to transmit a maximum heating power of at least 300 W, in particular at least 400 W, in particular at least 500 W, and in particular at least 600 W.Correspondingly small and powerful heating units enable a particularly compact design of the cooktop system, especially with a total width of no more than 600 mm.

[0024] The invention further relates to a combination appliance comprising a cooktop system according to the preceding description and an oven, in particular a baking oven. Preferably, the combination appliance is provided as a pre-assembled unit. The extractor fan can be in fluid-conducting communication with the oven interior and / or a housing space surrounding the oven interior. Preferably, the extractor fan is in air-conducting communication with the oven interior to generate a recirculating airflow and / or to extract cooking fumes, in particular moisture. The extractor fan can be in air-conducting communication with the housing space to provide a cooling airflow. The combination appliance is particularly compact and can be implemented economically. In particular, the combination appliance can be easily and economically integrated into a kitchen base cabinet. The kitchen base cabinet can be designed with or without a back panel.

[0025] A main dimension, in particular a diameter, of the inlet opening is preferably at least 100 mm, in particular at least 140 mm, in particular at least 160 mm, in particular at least 170 mm. A main dimension, in particular a diameter, of the inlet opening is preferably a maximum of 250 mm, in particular a maximum of 220 mm, in particular a maximum of 200 mm, in particular a maximum of 180 mm. This allows for particularly efficient extraction of cooking fumes while maintaining a very compact design of the cooktop system.

[0026] According to a further aspect of the invention, the extractor hood comprises at least one grease filter and / or at least one odor filter. The at least one odor filter can be arranged in a positive pressure duct section, particularly downstream of the at least one fan. Preferably, the at least one odor filter can be reversibly removed from the extractor hood through its inlet opening. For this purpose, the extractor hood can have a filter change chamber that connects the positive pressure duct section with the negative pressure duct section. The filter change chamber is preferably reversibly closable. This reliably prevents the circulation of cooking fumes through the filter change chamber during operation of the extractor hood.To close the filter change chamber, a suction chamber seal for reversibly closing the negative pressure channel section and / or a pressure chamber seal for reversibly closing the positive pressure channel section are preferably provided. The suction chamber seal and the pressure chamber seal can be integrated as a single unit.

[0027] According to a further aspect of the invention, the maximum power output of the at least one heating unit, in particular the at least one induction coil, is in the range of 300 to 4000 watts. Preferably, the ratio of the maximum power outputs of at least two of the heating units, in particular the induction units, is at least 150%, in particular at least 200%, in particular at least 300%, in particular at least 500%, in particular at least 750%. The ratio of the main dimensions, in particular diameters, of at least two of the cooking zones is preferably at least 150%, in particular at least 200%, in particular at least 300%.

[0028] The cooktop system can, in particular, have at least one cooking zone with a diameter of no more than 100 mm, in particular no more than 90 mm, in particular no more than 80 mm, in particular no more than 70 mm, in particular no more than 60 mm. It can also have at least one cooking zone with a diameter of at least 160 mm, in particular no more than 180 mm, in particular no more than 200 mm, in particular no more than 220 mm, in particular no more than 240 mm. Providing one particularly large cooking zone and one particularly small cooking zone improves, on the one hand, the flexibility with regard to the use of the cooktop system. On the other hand, this allows for particularly good utilization of the available installation space.

[0029] The smallest of the cooking zones can have a maximum power output in the range of 300 W to 800 W, particularly in the range of 400 W to 600 W. The largest of the cooking zones can have a maximum power output in the range of 2000 W to 5000 W, particularly in the range of 2500 W to 4000 W.

[0030] According to a further aspect of the invention, the areal density of the maximum power of the at least one induction coil is in the range of 0.05 W / mm² to 0.15 W / mm², in particular from 0.06 W / mm² to 0.13 W / mm², and in particular from 0.07 W / mm² to 0.12 W / mm². Preferably, the areal density of the maximum power of at least one of the induction coils is at least 0.1 W / mm², in particular at least 0.12 W / mm², in particular at least 0.14 W / mm², in particular at least 0.15 W / mm², and in particular at least 0.2 W / mm². Preferably, the ratio of the areal density of the maximum power of two induction coils of the cooktop system is at least 120%, in particular at least 130%, in particular at least 150%, and in particular at least 200%.According to a further aspect of the invention, at least different induction coils are provided, wherein the induction coil which is larger with respect to its main dimension has an area density of a maximum power which is at least 10%, in particular at least 20%, in particular at least 50% lower than the area density of the maximum power of the smaller induction coil.

[0031] According to a further aspect of the invention, the geometric centroid of the inlet opening is arranged at a distance from the geometric centroid of the cooking support in a top view. With respect to the depth and / or width of the cooking surface system, the geometric centroid of the inlet opening can be located centrally within the cooking support. It is particularly preferred that the geometric centroid of the inlet opening is located off-center with respect to the width of the cooking support and centrally within the cooking support with respect to its depth, or vice versa. This allows for a particularly space-saving and aesthetically pleasing arrangement of the inlet opening and the cooking surfaces.

[0032] The invention further relates to the fundamentally independent, but combinable with the aforementioned features of the cooktop system, aspect in which the cooktop system is designed to be installed in different orientations, in particular in a kitchen base cabinet and / or in a kitchen worktop. In particular, the cooktop system can be optionally designed for installation in a first orientation or a second orientation, wherein in the second orientation the cooktop system is rotated by 90° or by 180° about a vertical axis relative to the first orientation. A user interface of the cooktop system is preferably arranged on the cooking surface, and in particular attached to it.The user interface can be rotationally symmetrical and / or arranged in different orientations on the cooking surface and / or be reversibly pivotable on the cooking surface and / or include a screen designed for reversibly pivotable display of control information. The cooktop system is therefore flexibly adaptable to various installation situations.

[0033] According to a further aspect of the invention, the cooktop system includes a mounting frame. The mounting frame is preferably designed for height-adjustable attachment of the cooktop system to a kitchen worktop and / or a kitchen base cabinet. This significantly simplifies the installation of the cooktop system.

[0034] According to another aspect of the invention, the extractor fan is arranged completely below the cooking tray.

[0035] According to a further aspect of the invention, the total vertical height of the cooktop system, in particular including the cooking support, all heating elements, and the extractor fan, in particular including the fan and / or the negative pressure duct section, is a maximum of 300 mm, in particular a maximum of 280 mm, in particular a maximum of 250 mm, in particular a maximum of 220 mm, in particular preferably a maximum of 200 mm, in particular a maximum of 180 mm, in particular 160 mm, in particular 150 mm, in particular 120 mm, in particular 100 mm. The total height can, in principle, also be greater.

[0036] According to a further aspect of the invention, the extractor fan has at least one, in particular at least two, and in particular at least three fans for extracting cooking fumes. Preferably, the cooktop system, including the cooking surface, all heating elements, and the extractor fan, in particular the fan and / or the negative pressure duct section, is designed as a combined unit. This allows for the cooktop system to be mounted in one piece, for example, on a worktop. This significantly reduces the installation effort.

[0037] According to another aspect of the invention, the cooktop system comprises exactly three heating units. Because the cooktop system has only three heating units, it can be designed with a particularly narrow overall width. At the same time, the cooktop system with the three heating units offers sufficient flexibility for heating different foods simultaneously.

[0038] According to a further aspect of the invention, the at least one inlet opening penetrates the cooking carrier. This advantageously allows the inlet opening to be positioned particularly close to the heating elements. Cooking fumes can thus be extracted directly at their source. The extractor fan can therefore be operated with exceptional energy efficiency. The extractor fan can also have two, three, or four inlet openings.

[0039] According to a further aspect of the invention, an inlet channel with an initial section immediately adjacent to the inlet opening is connected to the at least one inlet opening. The initial section can have a central longitudinal axis which is inclined to a cooktop normal. The cooktop normal is understood to be a direction perpendicular to a working surface of the cooktop, in particular the cooking surface. The angle between the central longitudinal axis and the cooktop normal is preferably in the range of 10° to 180°, in particular from 30° to 60°, in particular from 40° to 50°, and in particular is exactly 45°.

[0040] According to a further aspect of the invention, the extractor fan has an inlet grille that can be arranged at the at least one inlet opening. The inlet grille can have at least one guide element, oriented in particular towards the at least one heating element, for the directed extraction of cooking fumes. The guide element can be designed as a guide plate, in particular as a lamellar plate. Preferably, the at least one guide element does not project upwards above the food carrier. Alternatively, the guide element can project beyond the food carrier. Preferably, the inlet grille at least partially surrounds the inlet opening above the food carrier. The at least one guide element can shade an area of ​​the inlet opening facing away from the at least one heating unit. For this purpose, the inlet grille preferably has a wall that shades the inlet opening at least partially in the horizontal direction and / or upwards.Preferably, the inlet grid can be arranged reversibly at the inlet opening.

[0041] According to a further aspect of the invention, the inlet grille does not completely cover the inlet opening. For example, the inlet opening can be oval in a top view and the inlet grille round in a top view. The inlet opening can completely enclose the inlet grille in a top view. The cooking fumes extracted through the inlet opening are not completely, but only partially, directed through the inlet grille.

[0042] According to a further aspect of the invention, a geometric centroid of the at least one inlet opening is arranged at a distance from a geometric centroid of the cooking carrier in a top view. Advantageously, this allows the cooking surface system to be designed to be particularly compact, especially in the horizontal direction.

[0043] According to a further aspect of the invention, the at least one inlet opening is arranged in a top view at a distance in the width direction and / or in the depth direction from the geometric centroid of the cooking surface. Because the at least one inlet opening does not overlap the geometric centroid of the cooking surface, a particularly compact design of the cooktop system can be ensured.

[0044] According to a further aspect of the invention, the cooktop system comprises several heating units, wherein, in a top view, the minimum distance between the geometric centroid of the cooking surface and a first heating unit is at least twice as large as the minimum distance between the geometric centroid of the cooking surface and a second heating unit. This allows the cooktop system to be designed to be particularly compact in the horizontal direction. This is especially true when using heating units of different sizes.

[0045] According to a further aspect of the invention, at least one of the heating units is non-circular in a top view, in particular rectangular, especially square or rectangular, or triangular or hexagonal, in particular in the form of a regular hexagon. Preferably, the at least one heating unit and the inlet opening are each in the form of a regular hexagon. This enables a particularly compact design. Furthermore, the available area below the food carrier can be used particularly efficiently. The minimum distance between all the heating units is preferably a maximum of 40 mm, in particular a maximum of 20 mm, and in particular a maximum of 10 mm.

[0046] According to a further aspect of the invention, the distances between the at least one inlet opening and the respective heating unit differ by a maximum of 50%, in particular a maximum of 30%, and in particular a maximum of 10%. Preferably, all of the heating units are arranged at equal distances from the at least one inlet opening in a top view. This ensures equally efficient extraction of cooking fumes above each of the heating units.

[0047] According to a further aspect of the invention, the minimum distance between the at least one inlet opening and the at least one heating unit in a top view is a maximum of 100 mm, in particular a maximum of 50 mm, in particular a maximum of 30 mm, in particular a maximum of 10 mm. The extraction of cooking fumes can thus be particularly energy-efficient.

[0048] According to a further aspect of the invention, the at least one heating unit overlaps the geometric centroid of the cooking surface in a top view. This enables a particularly compact design of the cooktop system in the horizontal direction.

[0049] According to a further aspect of the invention, the cooktop system has a user interface for controlling the at least one heating unit and / or the extractor fan. The user interface can be arranged in a top view relative to at least one of the heating units such that it is opposite the inlet opening. Advantageously, this ensures a particularly compact arrangement of the at least one heating unit, the inlet opening, and the user interface in the horizontal direction.

[0050] The invention also aims to create an improved kitchen workspace.

[0051] This task is solved by a kitchen workstation with the features comprising a kitchen base cabinet with a storage space and a hob system, wherein the heating units and the extractor hood are arranged completely within the storage space in a top view.

[0052] Preferably, the storage space width can be a maximum of 600 mm. It has been found that a kitchen workstation can comprise a kitchen base cabinet with a storage space having a maximum width of 600 mm and a cooktop system according to the preceding description, wherein the at least one heating unit and the extractor hood are arranged completely within the storage space in a top view, in order to ensure particularly intensive use of space in a kitchen. The advantages of the kitchen workstation according to the invention correspond to the advantages of the cooktop system described above. In particular, the kitchen workstation can be further developed with the features of the cooktop system.

[0053] The storage space can be limited in width by two vertical partition walls oriented parallel to each other. Preferably, the partition walls are spaced a maximum of 600 mm apart. In plan view, the cooktop system is preferably arranged entirely between the two partition walls. Preferably, in a side view, at least one of the partition walls overlaps the extractor hood and / or the at least one heating element. The partition walls can be designed to support a worktop. The cooktop system can be attached to the worktop.

[0054] According to a further aspect of the invention, the kitchen base cabinet has a back panel. The back panel can have a recess for routing a cooking fume duct, in particular a pressurized duct section connected to the cooktop system.

[0055] According to another aspect of the invention, the kitchen base cabinet has a fastening device for at least partially fastening the hob system or the overpressure channel section.

[0056] According to another aspect of the invention, the kitchen base cabinet has a partition wall to limit storage space for the hob system at the bottom.

[0057] The kitchen base cabinet can have thermal insulation and / or sound insulation. This has the advantage of reliably protecting the space below the cooktop system from heat and / or reducing noise emissions, especially when the extractor fan is in operation.

[0058] According to an independent aspect of the invention, a downward-extracting extractor device for cooking fumes has at least one inlet opening for the cooking fumes to enter and at least one fan for drawing the cooking fumes in at the at least one inlet opening. The fan has a fan wheel rotatably mounted about an axis of rotation, and the axis of rotation is inclined to a horizontal plane and a vertical direction. Because the axis of rotation is inclined to the horizontal plane and the vertical direction, the extractor device can be integrated into a cooktop system in a particularly space-saving manner, and the flow deflection between the inlet opening and the at least one fan is reduced, thus enabling particularly energy-efficient extraction of the cooking fumes. The fan is preferably designed as a radial fan. The fan can also be designed as an axial or cross-flow fan.

[0059] According to a particularly preferred embodiment of the extractor hood, a negative pressure duct section of an exhaust duct of the extractor hood projects downwards above the at least one fan by a maximum of 50 mm, in particular a maximum of 25 mm, and in particular a maximum of 10 mm. Even more preferably, the at least one fan projects downwards vertically above the negative pressure duct section. A particularly low overall height of the extractor hood can thus be ensured.

[0060] According to a further aspect of the invention, the angle of inclination between the horizontal plane and the axis of rotation of the at least one fan lies in a range of 10° to 85°, particularly in a range of 30° to 80°, and especially in a range of 60° to 75°. The angle of inclination can also be exactly 45°.

[0061] According to a further aspect of the invention, the intake direction for cooking fumes in the at least one fan has an upward-pointing directional component. The angle between the horizontal plane and the intake direction is preferably at least 45°, more particularly at least 60°, and more particularly at least 80°. Because the intake direction has the upward-pointing directional component, the fan can be reliably protected against the ingress of liquids.

[0062] According to a further aspect of the invention, the negative pressure duct section connects the at least one inlet opening to the at least one fan via a fluid-conducting connection. The centerline of the negative pressure duct section preferably has an absolute angle change of at most 170°, more particularly at most 150°, more particularly at most 120°, and more particularly at most 100° along its length. The absolute angle change is preferably at least 100°, more particularly at least 120°. The absolute angle change is understood to be the integral of an absolute value of the curvature of the centerline of the duct along its length. This allows for particularly energy-efficient extraction of cooking fumes while avoiding turbulent flows, and reliably protects the at least one fan from ingress of liquids.

[0063] According to a further aspect of the invention, the channel centerline is designed without inflection points. This allows for a particularly laminar flow of cooking fumes through the negative pressure channel section.

[0064] According to one aspect of the invention, the at least one fan overlaps the at least one heating unit in a top view, a side view, and / or a front view. The heating unit preferably includes power electronics for supplying a heating element with electrical power. Preferably, the at least one fan, in particular a fan wheel of the at least one fan, overlaps the power electronics and / or a control unit of the cooktop system and / or a user interface of the cooktop system in the top view, side view, and / or front view. Advantageously, this allows the cooktop system to be designed to be particularly compact, especially in the vertical direction.

[0065] According to an independent aspect of the invention, the fan for drawing in cooking fumes comprises a fan housing with a vacuum connection opening and a fan wheel arranged in the fan housing and rotatably mounted about a pivot axis. The pivot axis, with a connection normal oriented perpendicular to the vacuum connection opening, forms a connection angle in the range of 10° to 85°, particularly in the range of 30° to 80°, and especially in the range of 60° to 75°. Advantageously, this allows the fan to be connected particularly easily to the initial section of a vacuum duct. In particular, a connection area of ​​the initial section can be oriented essentially vertically or horizontally. Intermediate elements for connecting the initial section to the vacuum connection opening can thus be avoided.The fan can therefore be used particularly cost-effectively in a downdraft extractor for cooking fumes and / or for a cooktop system. Preferably, the extractor has at least three, in particular at least four, in particular at least five, in particular at least six, and in particular at least eight fans. This allows the extractor to be designed to be particularly compact, i.e., requiring less installation space, and to operate particularly quietly. The at least three fans can be designed as axial fans and / or radial fans and / or cross-flow fans. A large number of fans allows the use of smaller and / or quieter fans while maintaining extraction performance. Compared to axial fans, cross-flow fans have a smaller diameter for the same extraction performance and therefore allow for a particularly compact design of the extractor.

[0066] According to one aspect of the invention, the at least one fan has a fan wheel with a diameter of at most 250 mm, in particular at most 200 mm, particularly preferably at most 180 mm, in particular at most 150 mm, in particular at most 120 mm, in particular at most 100 mm, in particular at most 80 mm, in particular at most 50 mm. The extractor hood can thus be designed to be particularly compact. The installation space required by the extractor hood is small.

[0067] In principle, fans with larger impellers, especially those with a diameter of 160 mm, 200 mm, or up to 250 mm, can also be used. It is particularly possible to use four fans, each with an impeller diameter of 160 mm. The impellers can each have a height of 80 mm or less, especially 50 mm or less.

[0068] Preferably, the height of the extractor hood is at most 220 mm, in particular at most 200 mm, in particular at most 150 mm, in particular at most 120 mm, in particular at most 100 mm. This advantageously allows for a particularly compact design of the extractor hood. The space below the extractor hood can be largely retained for storage, for example for cookware.

[0069] According to a further aspect of the invention, the at least one fan is interconnected via a negative pressure duct section of the exhaust system. This negative pressure duct section extends between the at least one inlet opening and the at least one fan. Preferably, all fans are interconnected via this negative pressure duct section. The at least one fan can be connected to the at least one inlet opening via a single negative pressure duct section. Alternatively, the exhaust system can have multiple inlet openings, each of which is connected to one of the fans via a separate negative pressure duct section. Preferably, all fans can be controlled independently of one another, particularly by means of a suitable control device.Preferably, cooking fumes can be extracted independently via the individual inlet openings. To vary the extraction rate, either all or individual fans can be activated. The individual fans can thus always be operated at an optimal speed, determined in particular by the geometry of the fan blades, at which they operate efficiently and quietly, while the extraction rate remains controllable by activating a reduced number of fans compared to the total number of fans.

[0070] The extractor fan can include a filter for filtering cooking fumes. Because several fans are interconnected via the negative pressure duct section, the number of filters can be lower than the number of fans. This makes the extractor fan particularly easy to maintain and allows for a compact design. Preferably, the extractor fan is configured such that each fan draws the cooking fumes through each of the filters, particularly through a single filter.

[0071] According to a further aspect of the invention, the filter is arranged vertically adjacent to the at least one inlet opening and / or to a food carrier, in particular a surface of the food carrier, and / or flush with it. In a top view, the filter can be completely overlapped by the food carrier or arranged behind it. Such an arrangement of the filter allows the extractor fan to be designed in a particularly space-saving manner and to have a particularly low overall height.

[0072] The filter can be glued to the cooking tray and / or connected to it via a filter holder, particularly a form-fitting connection, especially via a rail. Preferably, the filter is reversibly removable from the extractor hood, particularly the cooking tray, and especially without tools. The filter can be designed as a grease filter. Preferably, the area of ​​the filter covered by the cooking tray in a top view is at least 50% of the area of ​​the cooking tray in a top view. This ensures energy-efficient filtration of the cooking fumes.

[0073] The extractor fan can have at least one cover for concealing the at least one inlet opening. The cover can be arranged parallel to, and in particular flush with, a surface of the cooking surface. The cover can have several, in particular at least ten, in particular at least fifty, in particular at least one hundred, openings for extracting the cooking fumes. The cover can be designed as a grid or as a metal mesh. The cover can be made of glass, in particular glass-ceramic, or metal, in particular stainless steel. Preferably, the cover is adapted to the cooking surface, in particular in color and / or structure, in such a way that they are hardly or not at all visually distinguishable from one another.

[0074] The filter can have at least one cover and at least one filter element. The cover can be reversibly connected to the filter element. The filter can have a collection tray to collect overflow liquid. For example, the filter has a triangular cross-section.

[0075] According to one aspect of the invention, the extractor hood has at least one fan motor, which is connected to at least two, and in particular at least three, of the fans in a rotary-driving manner. Preferably, all of the fans are rotary-driven by a single fan motor. For this purpose, the fan motor can be in rotary transmission connection with the respective fan wheel of the at least two, and in particular at least three, fans via one or more rotary transmission means, in particular one or more gearboxes and / or a belt drive. The fan motor can be brought into rotary transmission connection with the fan wheels of the fans or decoupled from them, in particular via a switchable coupling device. In general, the number of fan motors can be smaller than the number of fans, and in particular smaller than the number of fan wheels. This aspect is also advantageous independently of the other details of the present invention.

[0076] According to a further aspect of the invention, the extractor hood comprises at least one odor filter, in particular an activated carbon filter, arranged in the negative pressure duct section. Preferably, the filter is designed as a combination filter, comprising both a grease filter and an odor filter. The odor filter arranged in the negative pressure duct section is particularly easy to remove, especially via the at least one inlet opening. The extractor hood is therefore particularly easy to maintain.

[0077] According to a further aspect of the invention, at least two of the fans have axes of rotation oriented obliquely to each other. This means that at least two of the fans have axes of rotation that are not parallel to each other. The axis of rotation of the at least one fan can be oriented vertically and / or horizontally. The axis of rotation of the at least one fan can also be inclined to the vertical direction, with an angle to the vertical direction being greater than 5° and less than 85°. The axes of rotation of the at least two fans can be oriented radially to the upstream section of the negative pressure duct and / or to a vertical axis, in particular one passing through the geometric centroid of the inlet opening. The at least two fans can thus be arranged on the negative pressure duct section in a particularly space-saving manner.The angle between the axes of rotation of the at least two fans is preferably at least 30°, in particular at least 45°, in particular 90°.

[0078] According to a further aspect of the invention, the extractor hood comprises at least one guide element adjacent to the at least one inlet opening and movable along a vertical direction for shading an upper space located upstream of the at least one inlet opening on one side. The upper space is understood to be a space above the extractor hood from which the cooking fumes are extracted downwards by means of the extractor hood. The guide element is preferably plate-shaped. The at least one guide element surrounds the at least one inlet opening on one side, i.e., not completely. In a top view, the at least one guide element surrounds the at least one inlet opening, preferably at an angle of at least 30°, particularly at least 45°, particularly at least 90°, particularly at least 120°, and particularly at least 180°, starting from a geometric centroid of the inlet opening.The extraction of cooking fumes can thus be directed and made particularly energy-efficient.

[0079] The effectiveness of the guide element depends essentially on its height. Preferably, the at least one guide element extends vertically upwards from the at least one inlet opening over a distance of at least 50 mm, in particular at least 100 mm, in particular at least 150 mm, in particular at least 200 mm.

[0080] The at least one guide element can be planar, simply curved, or doubly curved, i.e., non-developable. The at least one guide element preferably has a circular arc cross-section.

[0081] The at least one guide element may include lighting. The at least one guide element may also include a user interface for controlling the at least one fan and / or the at least one cooktop.

[0082] Preferably, the at least one guide element is movable relative to the at least one inlet opening. The extractor hood can have a guide device, in particular a cam guide, for this purpose. Preferably, the at least one guide element can be arranged between a guide position in which the upper chamber is shaded on one side, and a return position in which the extraction of cooking fumes is unaffected by the at least one guide element.

[0083] According to a further aspect of the invention, an upper surface of the at least one guide element can be arranged in the reset position below or flush with the adjacent inlet opening. An area above the inlet opening can thus be used for placing food being cooked without being obstructed by the at least one guide element.

[0084] Preferably, the guide element comprises a closing element for closing, in particular airtight, the at least one inlet opening in the reset position.

[0085] In the guide position, the at least one guide element preferably covers at least one inlet opening in a top view, preferably at least partially. The extraction of cooking fumes can thus be more precisely directed and therefore particularly efficient.

[0086] According to a further aspect of the invention, the at least one inlet opening has an area of ​​at most 100 mm², in particular at most 10 mm², in particular at most 1 mm², in particular at most 0.1 mm². The number of inlet openings is preferably at least ten, in particular at least twenty-five, in particular at least fifty, in particular at least one hundred, in particular at least one thousand. The extraction of cooking fumes can thus take place at a multitude of different positions and in the immediate vicinity of where the cooking fumes originate. The extraction of cooking fumes is therefore particularly efficient.

[0087] According to a further aspect of the invention, the multiple inlet openings each belong to one of at least two exhaust sections, wherein the extraction of cooking fumes can occur independently via each of the exhaust sections. The inlet openings of each of the at least two exhaust sections can each be connected to vacuum channel sections that are airtight and separated from one another. Preferably, each of the at least two exhaust sections is connected, in particular via a separate vacuum channel section, to at least one fan for drawing in the cooking fumes. Preferably, each of the at least two exhaust sections comprises at least one, in particular at least two, in particular at least five, in particular at least ten, in particular at least fifty, inlet openings.

[0088] Another objective of the invention is to improve a cooktop system.

[0089] This problem is solved by a cooktop system with a ventilation system as described above and a cooktop for heating food. The advantages of the cooktop system according to the invention correspond to the advantages of the ventilation system described above. Preferably, the cooktop comprises at least one food support and at least one heating unit arranged below the food support. The at least one heating unit can be designed as a radiant heating unit and / or as an induction heating unit. The at least one heating unit, in particular the induction coils, can each have a diameter or a length and width of up to 23 cm, in particular up to 24 cm, and in particular more than 24 cm. The cooktop system can in particular have four cooking zones, each with a diameter or a length and width of 24 cm.

[0090] The at least one inlet opening is preferably arranged in a top view in the rear third, and in particular in the rear quarter, of the cooktop system. The at least one inlet opening preferably extends over at least 50%, and in particular at least 70%, and in particular at least 85%, of the width of the cooktop system.

[0091] According to one aspect of the invention, the cooking support completely overlaps all of the fans in a top view. The horizontal dimensions of the cooktop system are therefore particularly small.

[0092] According to a further aspect of the invention, the fans are arranged in a top view in an area behind the rear edge of the cookware carrier. This makes it possible to design the cooktop system with a particularly low profile in the front area, especially in the area of ​​the cooktops, which are also referred to as cooking zones. The cooktop system can have a height of no more than 10 cm, in particular no more than 5 cm, in particular no more than 4 cm, in the front area, particularly over at least 50%, in particular no more than 70%, in particular no more than 80%, in particular no more than 90% of its extension in the direction perpendicular to the front edge. These specifications regarding the height of the cooktop system apply in particular to the entire area in which the cooktops are arranged. The cooktop system thus has such a low profile in this area that the entire space in the base cabinet below can be used.It is not necessary to omit the top drawer. If required, it can be designed with a slightly reduced insertion depth.

[0093] According to a further aspect of the invention, the cooktop system has an L-shaped cross-section. It can have a lower height, particularly in its front area, especially in the area where the cooktops are arranged, than in the area of ​​its rear edge. Electronic components and / or the fan(s), in particular the fan impeller(s), can be arranged in the area of ​​the rear edge.

[0094] According to a further aspect of the invention, the cooktop system can have an L-shaped cross-section in the transverse direction. In particular, it can have a greater height in one or both of its edge regions than in its central region. This also makes it possible to achieve a particularly low height in the central region of the cooktop system. It is especially possible to arrange electronic components and / or fans or their components and / or other components of the cooktop system in an edge region, particularly in a rear and / or a side edge region.

[0095] According to one aspect of the invention, the filter is arranged in a top view between at least two of the cooking zones or behind the at least one cooking zone.

[0096] According to one aspect of the invention, the at least one inlet opening is gas-permeable and liquid-repellent, in particular liquid-tight. For this purpose, a gas-permeable and liquid-repellent, in particular liquid-tight, layer can be arranged at the at least one inlet opening, in particular on the food carrier. The gas-permeable and liquid-repellent layer can be arranged above or below the food carrier. The gas-permeable and liquid-repellent layer can be attached to the food carrier and / or to the at least one filter, in particular in a material-bonded or replaceable manner. Preferably, the gas-permeable and liquid-repellent layer is cleanable, in particular dishwasher-safe. This ensures that cooking fumes are reliably extracted downwards, while liquids cannot penetrate into an area below the food carrier and / or the at least one inlet opening.

[0097] The at least one inlet opening can each limit an inlet channel penetrating the food carrier upstream. The at least one inlet channel can be designed as a bore, in particular as a micro-bore and / or as a perforation. Preferably, at least one of the inlet openings is arranged in a top view in a central region of the food carrier, in particular in the region of the geometric centroid of the food carrier. At least one of the inlet openings can be arranged in a top view in an edge region of the food carrier.

[0098] According to one aspect of the invention, the area fraction of a perforated surface of the cooking carrier compared to the total surface of the cooking carrier in a top view is at least 30%, in particular at least 50%, in particular at least 75%, in particular 100%.

[0099] According to one aspect of the invention, the at least one cooking carrier is reversibly removable from a cooking carrier receptacle of the cooktop system, particularly without tools.

[0100] The cooking surface can be designed as a separate component, separable from the other components of the cooktop system. It can also be separable, and in particular removable, from the other components of the cooktop system together with the induction generators.

[0101] The cooking tray can be dishwasher-safe and / or designed for cleaning in a pyrolytic process. In particular, the cooking tray can be scratch-resistant and / or corrosion-resistant and / or heat-resistant, especially for temperatures of at least 200 °C, at least 300 °C, at least 400 °C, and at least 500 °C.

[0102] The at least one food carrier can also be designed as a warming plate, which is particularly removable and / or portable without tools, and which can be capacitively and / or electrically heated. For electrical heating, the warming plate can have layers of micanite. Preferably, the warming plate can be heated to a maximum temperature of 120 °C, particularly 100 °C, and particularly 80 °C. Preferably, the food carrier has a specific heat capacity of at least 500 J / kgK, particularly 700 J / kgK, and particularly 850 J / kgK.

[0103] According to a further aspect of the invention, the cooktop system is designed as a compact unit. The term "compact unit" refers to a mounting unit comprising the cooktop and the extractor hood, wherein the extractor hood includes the negative pressure duct section and at least one fan. The cooktop system designed as a compact unit is particularly quick and easy to install, especially on a worktop.

[0104] According to a further aspect of the invention, the at least one fan is arranged horizontally, completely behind the geometric center of gravity of the cooktop system, particularly the cooking surface, when viewed from above. This allows for a particularly low overall height of the cooktop system. When the cooktop system is mounted on a kitchen base cabinet, the storage space available below the worktop remains largely unaffected by the cooktop system, especially in the front area. Preferably, the at least one fan is arranged completely behind the cooking surface when viewed from above. The axis of rotation of the at least one fan can be oriented horizontally, particularly in the depth direction of the cooktop.

[0105] According to a further aspect of the invention, the front height of the cooktop system in a horizontal area between the front edge and a geometric center of gravity of the cooktop system is at most 180 mm, in particular at most 150 mm, in particular at most 120 mm, in particular at most 100 mm, in particular at most 80 mm, in particular at most 50 mm. It has been shown that a cooktop system with a height of 40 mm in the front area is possible.

[0106] The cooktop system has such a low installation height, particularly in an area extending at least 30 cm, in particular at least 40 cm, in particular at least 50 cm from the front edge in a direction perpendicular to it.

[0107] The cooktop system can have such a low installation height, especially across the entire cooking area.

[0108] The overall height of the cooktop system is preferably no more than 250 mm, in particular 200 mm, in particular 150 mm.

[0109] The invention also aims to improve a cooktop system with a cooktop cover.

[0110] This problem is solved by a cooktop system with the features of claim 13. According to the invention, it was found that the cooktop system, with its cooktop cover that is movable relative to the cooktop and which, in the closed position, at least partially covers the at least one inlet opening and the at least one cooking zone in a top view, and reveals them in the open position, is particularly flexible and can be used intensively. A cooking zone is defined as an area above the food carrier in which the at least one heating unit heats the food.

[0111] When the cooktop cover is in the open position, the entire cooktop can be used for heating food in the usual way. When the cooktop cover is in the closed position, a first area above the cooktop can be used for heating food, while a second area above the cooktop can simultaneously be used for food preparation. By covering at least one of the air inlets, the extraction intensity is increased, especially with unchanged fan speed, in the uncovered area of ​​the inlet. This allows for increased extraction performance in the cooking area of ​​the cooktop. Furthermore, the cooktop cover in the open position reliably protects the wall behind it from grease splatters.This enables intensive use of the space available in a kitchen as well as energy-efficient extraction of cooking fumes.

[0112] According to a further aspect of the invention, in the closed position, the cooktop cover only covers the at least one inlet opening, but not the cooking zones. In the closed position, the cooktop cover can, in particular, fit flush against a rear edge of the cooking zones, especially the cooking surface.

[0113] The upper surface of the cooktop cover can be designed as a mechanically robust, particularly scratch-resistant, surface for placing items and / or a cut-resistant cutting surface. When the cooktop cover is in the closed position, this upper surface can then be used, for example, to prepare food to be heated. Preferably, the cooktop cover is high-temperature resistant, particularly for temperatures of at least 150 °C, particularly at least 200 °C, and particularly at least 250 °C. The cooktop cover can have a particularly low thermal conductivity of at most 3.0 W / mK, particularly at most 2.0 W / mK, and particularly at most 1.0 W / mK. Heated food can therefore be placed on the cooktop cover without the risk of damaging it or burning the skin.

[0114] The hob cover can be made of metal, especially cast iron, glass or glass-ceramic, or plastic.

[0115] The cooktop cover is preferably pivotally mounted on the cooktop system, particularly on the cooktop itself. The cooktop cover can be connected to a drive mechanism for moving it between the closed and open positions. This drive mechanism can include a motor and / or a spring element. This allows the cooktop cover to be moved between the closed and open positions particularly easily, and especially automatically. For manual movement between the open and closed positions, the cooktop cover can have a handle.

[0116] Preferably, the cooktop cover completely conceals the at least one inlet opening and / or the at least one cooking zone when closed. In the closed position, the cooktop cover can completely overlap the entire cooktop, particularly the entire cooking surface, in a top view. The cooktop cover can rest on the cooktop, particularly on the cooking surface, when closed. In the closed position, one surface of the cooktop cover can be flush with a worktop or project upwards above it.

[0117] According to one aspect of the invention, the cooktop cover seals the at least one inlet opening airtight in the closed position. The cooktop cover can have a sealing gasket for this purpose. Preferably, the sealing gasket completely surrounds the at least one inlet opening in the closed position. The escape of odors from the extractor hood through the at least one inlet opening can thus be reliably prevented, particularly when the fans are deactivated.

[0118] According to a further aspect of the invention, the cooktop cover comprises at least two independently movable cover bodies. Preferably, the at least one inlet opening and the food carrier can each be partially covered by the at least two cover bodies. Unused areas of the food carrier can thus be covered together with a, in particular adjacent, partial area of ​​the at least one inlet opening, whereby in particular a further partial area of ​​the food carrier can be used for heating food. The cooking fumes can be extracted particularly intensively via the thus reduced area of ​​the inlet opening.

[0119] The cooktop cover can have at least one sealing cap attached to the at least one cover body. The sealing cap can be designed such that, in the closed position of the at least one cover body, it penetrates a negative pressure duct section of the extractor hood. The sealing seal is preferably arranged on the at least one sealing cap. The at least one inlet opening can thus be sealed particularly reliably, especially airtight.

[0120] Further features, advantages, and details of the invention will become apparent from the following description of the food carrier, the cooking surface, and the cooking surface system with reference to the figures. These show: Fig. 1 a perspective view of a cooktop system with a cooktop and a range hood, Fig. 2 a sectional view of the cooktop system along section line II-II in the Fig. 1 Fig. 3 a top view of a cooktop system according to a further embodiment, wherein the cooktop system comprises six induction heating units, a range hood with several cross-flow fans and a cooking carrier with a plurality of inlet channels, these being inhomogeneously distributed over a surface of the cooking carrier; Fig. 4 a perspective view of a cooktop system according to a further embodiment, comprising a range hood with a single inlet opening formed by a cooking carrier and a cooktop cover for reversibly and completely covering the cooking carrier and the inlet opening; Fig. 5 a sectional view of the cooktop system along the section line VV in the Fig. 4 with four fans arranged at equal angles and equidistant around a vertical axis passing through a centroid of the inlet opening, Fig. 6 a sectional view of the cooktop system along section line VI-VI in the Fig. 4 with a hollow cylindrical filter, Fig. 7 a perspective rear view of a cooktop system according to a further embodiment, wherein the cooktop system comprises a cooktop with four heating units arranged side by side, a cooktop cover with two independently movable cover bodies and a range hood with an inlet opening arranged at the rear of the cooktop, Fig. 8 a sectional view of the cooktop system along section line VIII-VIII in the Fig. 7 , wherein an odor filter of the extraction device is arranged in a negative pressure duct section located upstream of the fans, Fig. 9 a perspective view of a cooktop system according to a further embodiment with two movable cooking fume guide elements for shading an upper space located upstream of an inlet opening on one side, Fig. 10 a sectional view of the cooktop system along section line XX in the Fig. 9 with two fans arranged downstream of the two inlet openings, Fig. 11 a top view of a cooktop system according to a further embodiment with a food carrier, three heating units arranged thereon and a ventilation device for extracting cooking fumes downwards, wherein the total width of the cooktop system is 560 mm and wherein all the heating units are arranged equidistant from the inlet opening in a top view, Fig. 12 a side view of the cooktop system in Fig. 11 Fig. 13 is a top view of a cooktop system according to a further embodiment, wherein a central longitudinal axis of an inlet channel is inclined to a cooktop normal, Fig. 14 is a top view of a cooktop system with four heating units and a range hood, and Fig. 15 is a sectional view of the cooktop system along section line XV-XV in the Fig. 14 with two fans, each having a fan wheel rotatably mounted about an axis of rotation, the axis of rotation being inclined to a horizontal plane and to a vertical direction.

[0121] The following section details various aspects of a cooktop system 1 with a cooktop 2 and a range hood 3 based on the Fig. 1 and Fig. 2 The cooktop 2 comprises a cooking support 4 with four heating elements 5 arranged on it for heating food 6. The cooktop system 1 is arranged on a kitchen base cabinet 7. For this purpose, the cooktop system 1 is attached to a worktop 8 of the kitchen base cabinet 7. One surface of the cooking support 4 is flush with a surface of the worktop 8.

[0122] The cooktop system 1 includes a user interface 9 for controlling the extractor hood 3 and the heating units 5. The user interface 9 is designed as a touch-sensitive screen. The user interface 9 communicates with the extractor hood 3 and the heating units 5 via a control unit (not shown).

[0123] The cooking support 4 comprises a glass plate, in particular a glass-ceramic plate. The glass plate is penetrated by a plurality of inlet channels 10 for the extraction of cooking fumes. The cross-sectional area of ​​each inlet channel 10 is less than 1 mm².

[0124] A cooking zone 11 is formed by a heating unit 5 located at or above the cooking carrier 4. Within the cooking zone 11, the heating unit 5 can act upon and heat the food 6. The cooking carrier 4 has no inlet channels 10 in the cooking zone 11 area. With the exception of the cooking zone 11 area, the inlet channels 10 are arranged equidistantly from each other on the cooking carrier 4 in a top view. The inlet channels 10 extend straight and vertically through the cooking carrier 4. The inlet channels 10 have a circular cross-section.

[0125] As in the Fig. 2 As shown, the cooktop system 1 has a housing 12. A cooking tray holder 13 is arranged on the housing 12. The cooking tray holder 4 rests on top of the cooking tray holder 13 and can be removed from it upwards without tools and reversibly. The cooking tray holder 13 has a tilting edge (not shown). The tilting edge separates a contact surface of the cooking tray holder 13 from a recess. The recess is designed such that by applying downward pressure to the cooking tray holder 4 in an area above the recess, a section of the cooking tray holder 4 opposite the tilting edge can be lifted.

[0126] The cooking tray 4 is dishwasher-safe. In particular, the cooking tray 4 is high-temperature resistant, especially for temperatures of at least 350 °C, and suitable for pyrolytic cleaning.

[0127] The number of inlet channels 10 penetrating the cooking carrier 4 is greater than 50. A filter 14 is arranged below the cooking carrier 4, particularly in the areas penetrated by the inlet channels 10. In a top view, the filter 14 completely overlaps the inlet channels 10. The filter 14 is designed as a combination filter for filtering grease and odors from the cooking fumes. The cooking carrier 4 has a filter receptacle 15. The filter 14 is reversibly attached to the cooking carrier 4 by means of the filter receptacle 15.

[0128] The cooking carrier 4 is designed to be permeable to gases and impermeable to liquids. For this purpose, the cooking carrier 4 has a hydrophobic surface coating 16 in the area of ​​the inlet channels 10.

[0129] The filter 14 is arranged in a negative pressure duct section 17 of the extractor hood 3. The negative pressure duct section 17 extends between inlet openings 18, which are formed by the inlet channels 10 on the top of the cooking support 4, and fans 19 of the extractor hood 3. The extractor hood 3 comprises four fans 19. The fans 19 are designed as cross-flow fans. A rotation axis 20 of each fan 19 is oriented horizontally, in particular parallel to a front edge 20a of the cooktop system 1. The fans 19 are in fluid-conducting communication with the inlet openings 18 via the negative pressure duct section 17 and with a cooking fume outlet 21 via a positive pressure duct section 21.

[0130] The extractor fan 3 is designed to extract cooking fumes via four independently operable extraction sections 22a, 22b, 22c, 22d. Each extraction section 22a, 22b, 22c, 22d is connected to one of the fans 19 via a separate negative pressure channel section 17. The surface of the cooking carrier 4 is divided into four extraction sections 22 of equal area.

[0131] To create an airtight connection between the negative pressure channel section 17, located downstream of the respective extraction section 22, and the food carrier 4, sealing elements (not shown) are arranged on the negative pressure channel section 17. These sealing elements completely surround the respective extraction section 22.

[0132] The cookware support 4 has a depth T of 500 mm. In the front area, particularly over at least 70% of the depth T, starting from a front edge 20a of the cooktop system 1, the cooktop system 1 has a front installation height HV of 120 mm or less. The installation height HV of the cooktop system 1 in this area can be as low as 3 cm to 5 cm. A storage space 23 of the kitchen base cabinet 7 remains largely unaffected and unobstructed by the cooktop system 1. The top drawer 24 of the kitchen base cabinet 7 is not shortened either vertically or in depth. If necessary, the top drawer 24 of the kitchen base cabinet 7 can be made slightly shorter in depth to provide sufficient space at the rear for the installation of the fans 19.

[0133] The fans 19 each have a fan wheel 25. The diameter D of the fan wheels 25 is 80 mm.

[0134] The cooktop system 1 is designed as a compact unit and can therefore be easily and quickly installed in the worktop 8 as a pre-assembled system. The cooktop system 1, designed as a compact unit, comprises the housing 12, the cooktop 2, and the extractor hood 3. The negative pressure duct section 17 and the fans 19 of the extractor hood 3 are fully integrated into the compact unit, while the positive pressure duct section 26, located downstream of the fans 19, is only partially integrated.

[0135] The operation of the cooktop system 1, the extractor hood 3, the cooktop 2, and the food carrier 4 is as follows: The cooktop system 1 is commissioned via the user interface 9. User inputs for controlling the heating units 5 and the fans 19 are transmitted to the control unit via the user interface 9. The control unit provides electrical energy to operate the heating units 5 and the fans 19. Status and performance data of the heating units 5 and the fans 19 are transmitted to the user interface 9 via the control unit and displayed visually via the user interface 9.

[0136] The heating units 5 and the fans 19 can be independently switched on and off by the control unit. Activating the heating unit 5 located in the area of ​​the extraction section 22a heats only the food 6 located there. Activating the fan 19 connected to the extraction section 22a extracts cooking fumes via the inlet channels 10 belonging to the extraction section 22a.

[0137] Based on the Fig. 3 A further embodiment of the cooktop system 1 according to the invention is described below. In contrast to the previous embodiment, the inlet channels 10 are arranged inhomogeneously distributed over a surface of the cooking carrier 4. In addition, inlet channels 10 are also arranged in the area of ​​the cooking zones 11. The negative pressure channel section 17 extends in particular between the heating unit 5 and the cooking carrier 4. The heating unit 5 is arranged at a distance from the cooking carrier 4. The number of inlet channels 10 per unit area is greater in a peripheral region of the respective cooking zone 11 than in a central region of the respective cooking zone 11 and greater than in a peripheral region of the cooking carrier 4. The cross-sectional area of ​​the inlet channels 10 varies according to the position of the respective inlet channel 10 relative to the cooking zone 11.The inlet channels 10 arranged in an edge area of ​​the cooking station 11 have a larger cross-sectional area than those inlet channels 10 in the central area of ​​the cooking station 11 and in the edge area of ​​the cooking carrier 4.

[0138] The inlet channels 10 are designed to be permeable to gases and liquids. A collection tray 27 for overflow liquids is arranged below the cooking carrier 4. In a top view, the collection tray 27 overlaps a plurality of the inlet channels 10.

[0139] The cooktop system 1 comprises six cooktops 2, each with a cooking support 4. The cooking supports 4 of the respective cooktops 2 are designed separately from each other.

[0140] The operation of the cooktop system 1 according to the description in the Fig. 3 The illustrated embodiment corresponds to the functionality of the cooktop system 1 as described above. Because the cooktop system 1 comprises several cooktops 2 with only a single heating unit 5, the dimensions of the cooking supports 4 are correspondingly small. The cooking supports 4 can thus be removed particularly easily from their respective holders 13 and cleaned, especially in a dishwasher.

[0141] After removing the food carriers 4 from their respective holders 13, the collection trays 27 can be easily cleaned from above. The filter 14 attached to each food carrier 4 can be cleaned or replaced particularly easily.

[0142] Based on the Fig. 4 bis Fig. 6 A further embodiment of the invention is described. In contrast to the embodiments described above, the cooking carrier 4 has a single inlet channel 10. An upper surface of the inlet channel 10 forms the single inlet opening 18 of the extractor hood 3. The inlet opening 18 is covered by an inlet grille 28.

[0143] The cooktop system 1 comprises a cooktop cover 29 for reversibly covering the cooking support 4 and the inlet opening 18. The cooktop cover 29 includes a cover body 30 that can be moved relative to the cooking support 4. The cover body 30 can be arranged in a closed position and in an open position. In the closed position, the cover body 30 completely covers the cooking support 4 and the inlet opening 18 from above. The cover body 30 includes a sealing gasket 31 for airtight sealing of the inlet opening 18 in the closed position.

[0144] The cooktop cover 29 is hingedly attached to the cooktop 2. In the open position, the cooktop cover 29 exposes the food carrier 4, in particular the cooking zones 11, for heating the food, as well as the air inlet 18 for extracting cooking fumes.

[0145] The surface of the cooking support 4 is flush with the surface of the worktop 8. In the closed position, the cover body 30 rests on the edge of the worktop 8. According to an alternative embodiment (not shown), the surface of the cooking support 4 can be located below the surface of the worktop 8, and a surface of the cooktop cover 29 can be flush with the surface of the worktop 8 in the closed position.

[0146] The Fig. 5 Figure 1 shows a cross-section of the cooktop system 1 from below. The extractor hood 3 of the cooktop system 1 comprises four fans 19. The fans 19 have a horizontally oriented axis of rotation 20. In a top view, the fans 19 are arranged equidistantly and at equal angles around a vertical axis passing through the centroid of the inlet opening 18. The axes of rotation 20 of each pair of adjacent fans 19 are oriented at an angle of 90° to each other. The diameter D of the fan impellers 25 is 120 mm. The fans 19 are designed as axial fans.

[0147] The fans 19 are connected to the inlet opening 18 via a common negative pressure channel section 17. The exhaust device 3 includes a positive pressure channel section 26 that fluidly connects the fans 19.

[0148] As in the Fig. 6 The total installation height H of the cooktop system is shown to be 150 mm. Downstream of the inlet opening 18, a hollow cylindrical filter 14 with a collection tray 17 for overflow liquids is arranged. The filter 14 is designed as a grease filter.

[0149] The operation of the cooktop system 1 according to the Fig. 4 bis Fig. 6 The illustrated embodiment corresponds to the functionality of the cooktop system 1 according to the preceding embodiments. The inlet grille 28 is reversibly removable from the food carrier 4. The filter 14 can be removed from the inlet opening 18. The cooktop cover 29 can be pivoted between the closed and open positions. The food carrier 4 is fixedly connected to the worktop 8.

[0150] Based on the Fig. 7 and Fig. 8 A further embodiment of the invention is described. In contrast to the preceding embodiments, the cooktop system 1 comprises a cooktop 2 with four adjacent heating elements 5. An inlet opening 18 of the extractor hood 3 has a rectangular contour and is located behind the heating elements 5 or the cooking zones 11. The inlet opening 18 is in air-conducting communication via a negative pressure duct section 17 with four fans 19, each of which has a fan wheel 25. The axes of rotation 20 of the fan wheels 25 are parallel to each other and horizontally oriented.

[0151] The maximum front installation height HV in a horizontal area from a front edge 20a to a geometric centroid SP of the cooktop system 1 is 120 mm or less. The installation height HV of the cooktop system 1 in this area can be as low as 3 cm to 5 cm. The cooktop system 1 has such a low installation height, particularly over a depth T of at least 30 cm, and especially at least 40 cm, starting from its front edge 20a. The overall height H of the cooktop system 1 is 180 mm or less.

[0152] The cooktop cover 29 has two cover bodies 30. The two cover bodies 30 can be arranged independently of each other between the open and closed positions. In the closed position, each cover body 30 completely covers two of the cooking zones 11 and half of the inlet opening 18.

[0153] The two cover bodies 30 are each attached to the cooktop system 1 via a rotary mechanism 31a. The rotary mechanism 31a includes a drive spring (not shown) and a damping element (also not shown). The rotary mechanism 31a ensures smooth and damped opening and closing of each cover body 30.

[0154] As in the Fig. 8 The extractor fan 3, as shown, comprises two filters 14a and 14b arranged in the negative pressure duct section 17. The first filter 14a, arranged downstream of the inlet opening 18 in the direction of flow, is designed as a grease filter, and the second filter 14b is designed as an odor filter. An activated carbon filter serves as the odor filter. The second filter 14b can, in particular, have one or more activated carbon elements. These can be easily replaceable and can, in particular, be removed through the inlet opening 18.

[0155] Alternatively or additionally to the second filter 14b in the negative pressure duct section 17, an odor filter, in particular in the form of an activated carbon filter, can be arranged downstream of at least one of the fans 19. It is particularly possible to arrange a corresponding odor filter downstream of each of the fans 19. These odor filters are preferably replaceable, in particular replaceable without tools. They can be removed from the positive pressure duct section 26 via access openings provided for each filter.

[0156] The hob cover 29 includes a sealing lid 32 connected to the cover body 30 for airtight sealing of the inlet opening 18. The cover body 30 is arranged at a distance from the sealing lid 32.

[0157] The operation of the cooktop system 1 corresponds to the operation of the cooktop system 1 according to the previously mentioned embodiments. Due to the relative adjustability of the cover bodies 30 relative to each other, the inlet opening 18 can be selectively left uncovered, partially covered, or completely covered. With partial coverage of the inlet opening 18, the extraction performance in the uncovered area of ​​the inlet opening 18 is increased, even with the same fan 19 output. The uncovered cooking zones 11 can still be used for heating food 6. The cooking zones 11 covered by the cover body 30 are automatically deactivated. For this purpose, the control unit communicates with contact switches 33 to detect when the cover body 30 is in the closed position.

[0158] Based on the Fig. 9 and Fig. 10 A further embodiment of the invention is described. In contrast to the preceding embodiments, the extraction device 3 comprises two inlet openings 18, which are formed by two inlet channels 10 penetrating the food carrier 4. The extraction device 3 also comprises two guide elements 34, each arranged adjacent to the inlet openings 18 and oriented parallel to a main extent of the inlet openings 18. The guide elements 34 are each designed as a simply curved shell. The guide elements 34 are displaceable relative to the food carrier 4 between a return position and a guide position. In the guide position, the respective guide element 34 is arranged at least partially above the food carrier 4. In the guide position, the respective guide element 34 shades an upper space located upstream of the respective inlet opening 18 on one side opposite the inlet opening 18.In the reset position, the upper surface of the respective guide element 34 is arranged flush with the inlet opening 18 adjacent to it.

[0159] The guide elements 34 have a closing element 35. The closing element 35 is designed to cover the respective inlet opening 18 in the reset position.

[0160] As in the Fig. 10 As shown, the cooktop system 1 has a cam guide 36 for moving the guide elements 34.

[0161] The functioning of the in the Fig. 9 and Fig. 10 The illustrated cooktop system 1 corresponds to the functionality of the cooktop system 1 according to the embodiments described above. Moving the respective guide element 34 along the cam track 36 enables one-sided shading of the upper space for the directed extraction of cooking fumes in the guide position and closure of the respective inlet opening 18 in the reset position, thereby reliably preventing the escape of odors from the extractor hood 3.

[0162] Based on the Fig. 11 and the Fig. 12 A further embodiment of the invention is described. In contrast to the preceding embodiments, the cooktop system 1 comprises a food carrier 4, three heating units 5, and a ventilation device 3 with exactly one fan 19. The fan 19 of the ventilation device 3 is designed as a radial fan. The fan 19 is in fluid-conducting communication with the inlet opening 18 via the inlet channel 10.

[0163] The overall width B of cooktop system 1 is 560 mm. The overall height H of cooktop system 1, including the fan 19, is 180 mm. The depth T of cooktop system 1 is 515 mm.

[0164] The extractor fan 3 includes the fan 19, wherein the hob system 1 is designed as a combination unit for one-piece installation in the worktop 8.

[0165] The inlet opening 18 of the fan 19 penetrates the cooking carrier 4. In a top view, the inlet opening 18 is circular. The extractor hood 3 has an inlet grille 28, which can be reversibly positioned on the inlet opening 18. In a top view, the inlet grille 28 completely covers the inlet opening 18. The inlet grille 28 comprises concentrically arranged, lamellar guide elements 34 to support a laminar extraction of the cooking fumes through the inlet grille 28 and the inlet opening 18.

[0166] A geometric centroid 37 of the inlet opening 18 is spaced apart from a geometric centroid 38 of the food carrier 4. The distance a E between the geometric centroid 37 of the inlet opening 18 and the geometric centroid 38 of the food carrier 4 is 100 mm. In plan view, the geometric centroid 37 of the inlet opening 18 is spaced apart from the geometric centroid 38 of the food carrier 4 along both a width direction 39 and a depth direction 40.

[0167] The minimum distance a H1 between the geometric centroid 38 of the cooking carrier 4 and a first heating unit 5 is 75 mm, and the minimum distance a H2 between the geometric centroid 38 of the cooking carrier 4 and a second heating unit 5 is 10 mm. The minimum distance a EH1 between the inlet opening 18 and the first heating unit 5 is equal to the minimum distance a EH2 between the inlet opening 18 and the second heating unit 5, and equal to the minimum distance a EH3 between the inlet opening 18 and the third heating unit 5. The minimum distance a EH1, a EH2, a EH3 between the inlet opening and the heating units 5 is 40 mm.

[0168] The cooktop system 1 has a user interface 9. The user interface 9 comprises a touch-sensitive surface 41 and a plurality of display elements 42. The user interface 9 is designed to control the heating units 5 and the extractor fan 3. In a top view, the user interface 9 is arranged opposite the inlet opening 18 relative to one of the heating units 5. In particular, an outer edge of the user interface 9 is spaced along the width direction 39 and along the depth direction 40 from the geometric centroid 38 of the cooking support 4. The user interface 9 is located in a lateral edge region of the cooking support 4.

[0169] In the Fig. 12 The cooktop system 1 is shown in a side view. The fan 19 comprises a fan housing 43. The fan housing 43 is positioned above the lowest point of the inlet duct 10. The distance between the lowest point of the inlet duct 10 and the fan housing 43 is 50 mm. The fan housing 43 is located entirely below the heating elements 5. This ensures a particularly compact design of the cooktop system 1 in the horizontal direction.

[0170] The cooktop system 1 is at least partially integrated into a kitchen base cabinet 42a. The cooktop system 1 extends through the worktop 8, which rests on the kitchen base cabinet 42a. The cabinet width (BK) of the kitchen base cabinet 42a is 600 mm. The cabinet depth (TK) of the kitchen base cabinet 42a is also 600 mm. The kitchen base cabinet 42a has a storage space (BS) for accommodating the cooktop system 1 as well as drawers or shelves. The storage space width (BS) of the kitchen base cabinet 42a is 580 mm.

[0171] The kitchen base cabinet 42a has insulation 43a. The insulation 43a is positioned on the kitchen base cabinet 42a in such a way that it surrounds the underside and the front of the cooktop system 1. The insulation 43a ensures reduced noise emission and reduced heat transfer to the lower area of ​​the kitchen base cabinet 42a.

[0172] The functionality of the cooktop system 1 according to this embodiment corresponds to the functionality of the cooktop systems 1 described above.

[0173] In the Fig. 13 Figure 1 shows a further embodiment of a cooktop system 1. In contrast to the cooktop systems 1 described above, an initial section 44 of the inlet channel 10 has a central longitudinal axis 45 which is oriented obliquely to a cooktop normal 46. The angle between the central longitudinal axis 45 of the initial section 44 and the cooktop normal 46 is 45°.

[0174] The initial section 44 has a circular cross-section. The inlet opening 18 is elliptically shaped due to the oblique orientation of the central longitudinal axis 45 relative to the cooktop normal 46.

[0175] Because the overall width B of the cooktop system 1 is a maximum of 600 mm, in particular 560 mm, it is possible for the first time to arrange the cooktop system 1 with the extractor hood 3 in a kitchen base cabinet 42a with particularly small dimensions. This advantageously makes such cooktop systems 1 particularly flexible in their application and thus allows them to be installed on a significantly larger scale. A design of the cooktop system 1 with a maximum height of 200 mm is particularly advantageous, as this largely preserves the storage space 42b for storing items such as kitchen utensils.

[0176] In the Fig. 14 and Fig. 15Figure 1 shows a further embodiment of the cooktop system 1. In contrast to the cooktop systems 1 described above, the extractor hood 3 comprises two fans 19, each with fan wheels 25 rotatably mounted about a pivot axis 20, the pivot axes 20 being inclined to a horizontal plane and a vertical direction. The cooktop system 1 comprises four heating units 5, which are rectangular in plan view. The heating units 5 and the extractor hood 3 are connected to a user interface 9 via a signal.

[0177] The extractor fan 3 has an inlet opening 18 arranged centrally on a cooking carrier 4. An initial section 44 of a negative pressure channel section 17 is connected to the inlet opening 18.

[0178] The fans 19 each have a fan housing 43. The fan housing 43 includes a vacuum connection opening 47. The initial section 44 penetrates the vacuum connection opening 47. A channel connection 48 connects the initial section 44 to the fan housing 43 in a fluid-tight manner.

[0179] A connection standard 49 is oriented perpendicular to the vacuum connection opening 47. The connection standard 49 forms a connection angle α of 80° with the axis of rotation 20.

[0180] A power electronics unit 50 for supplying the heating units 5 is mounted below each heating unit 5. The inclination of the axis of rotation 20 provides space in an area between each heating unit 5 and the fan 19 for the power electronics unit 15, particularly for space-intensive individual components of the power electronics unit 15.

[0181] The two fans 19 overlap the heating units 5 in both a top and a side view. This makes the cooktop system 1 particularly compact. The overall installation height H is 180 mm.

[0182] The intake direction 51 of the fan 19 has a vertically upward-directed directional component. The intake direction 51 is oriented parallel to the axis of rotation 20. Because the intake direction 51 has the upward-directed directional component, the fan 19 is reliably protected against the ingress of liquids.

Claims

1. A hob system (1), comprising 1.1 a cooking item support (4) for supporting cooking items (6), 1.2 at least one heating unit (5) arranged on the cooking item support (4) for heating the cooking items (6), 1.3 an extractor device (3) for extracting cooking vapors downwards, and 1.4 a user interface (9) arranged on the cooking item support (4), 1.5 wherein the hob system (1) is designed to be installed in different orientations in a kitchen base unit (42a) and / or in a kitchen worktop, and for this purpose the user interface (9) 1.5.1 is rotationally symmetrical and / or 1.5.2 can be arranged in different orientations on the cooking item support (4) and / or 1.5.3 is arranged reversibly pivotably on the cooking item support (4) and / or 1.5.4 comprises a screen which is used for the reversibly pivotable display of control information.

2. Hob system (1) according to claim 1, characterized in thatthe hob system (1) is designed for installation optionally in a first orientation or a second orientation, wherein the hob system (1) in the second orientation is rotated by 90° or by 180° about a vertical axis relative to the first orientation.

3. Hob system (1) according to claim 1 or 2, characterized in that the total width (B) of the hob system (1) is a maximum of 600 mm.

4. Hob system (1) according to one of the preceding claims, characterized in that the extractor device (3) has at least one odor filter.

5. Hob system (1) according to claim 4, characterized in that the at least one odor filter is arranged in a negative pressure channel section (17).

6. Hob system (1) according to one of the preceding claims, characterized by Power electronics (15) for supplying the at least one heating unit (5) with electrical power, with at least one vertically oriented power electronics board.

7. Hob system (1) according to claim 6, characterized in that the at least one power electronics board is arranged in a plan view in an edge region of the hob system (1), in particular is arranged at a maximum distance of 50 mm from an outer edge of the hob system (1).

8. Hob system (1) according to one of the preceding claims, characterized in that the extractor device (3) comprises a fan (19), wherein a total vertical height (H) of the hob system (1) is a maximum of 200 mm.

9. Hob system (1) according to one of the preceding claims, characterized in that the extractor device (3) has at least one fan (19) for extracting cooking fumes, wherein the hob system (1) is designed as a combination device.

10. Hob system (1) according to one of the preceding claims, characterized by exactly three of the heating units (5).

11. Hob system (1) according to one of the preceding claims, characterized in thatthe extractor device (3) has at least one inlet opening (18) which penetrates the cooking food carrier (4).

12. Hob system (1) according to one of the preceding claims, characterized in that the extractor device (3) has at least one inlet opening (18) for extracting the cooking fumes, wherein a geometric center of gravity (37) of the at least one inlet opening (18) is arranged in a plan view at a distance from a geometric center of gravity (38) of the cooking product carrier (4).

13. Hob system (1) according to claim 12, characterized in that the at least one inflow opening (18) is arranged in the plan view in the width direction (39) and / or in the depth direction (40) at a distance from a geometric center of gravity (38) of the cooking product carrier (4).

14. Hob system (1) according to one of the preceding claims, characterized in thatthe at least one heating unit (5) overlaps a geometric center of gravity (38) of the cooking product carrier (4) in a plan view.

15. Hob system (1) according to one of the preceding claims, characterized in that the user interface (9) is designed to control the at least one heating unit (5) and / or the extractor device (3), wherein the user interface (9) is arranged opposite the inlet opening (18) in a plan view relative to at least one of the heating units (5).

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