DE102019212492A1 - TABLE VENTILATION - Google Patents

Abstract

The present invention relates to a table ventilation (10), having a vapor extraction opening (14), a vapor deflection device (16), a fan (18), a filter module (20) at least one extension means (24) and a drive unit (22) for motorized insertion and extending the at least one extension means (24), characterized in that the filter module (20) can be moved from a filter module working position (FA) into a filter module removal position (FE) by means of the drive unit (22).

Description

The invention relates to a table ventilation which has a vapor extraction opening, a vapor deflection device, a blower, a filter module, an extension means and a drive unit for the motorized retraction and extension of the extension means.

In recent years, there has been a sustained trend towards functional kitchen appliances that are subject to as few design constraints as possible and yet offer increased functionality and user-friendliness. The further development of extractor hoods to table ventilation was therefore particularly well received, as it resulted in a considerable simplification of the design.

The objective function on which every table ventilation system is based is to extract vapors from the cooking area above a hob, to filter it and to release the purified air into the environment. In the case of table ventilation, the air is sucked off downwards via a vapor extraction opening, which can be provided, for example, in a recess in a worktop. Desktop ventilators usually have filters, in particular grease filters, which have to be replaced at certain maintenance intervals. The grease filters are usually the first filter stage on or in the vapor extraction opening. Odor filters can be arranged as the last filter stage in front of an air outlet of the table fan. Odor filters are used in particular when the table ventilation provides a circulating air mode in which the cleaned air is not released outside, but inside the room in which the table ventilation is operated.

However, this has some disadvantages. On the one hand, the difficulty lies in arranging the filters in such a way that they can be reached with as little effort as possible. The anyway unfavorable positioning of the table ventilation below the worktop is exacerbated especially in the case of odor filters which are arranged at the air outlet and in particular after a fan of the table ventilation. On the other hand, access to filters is also made more difficult by the position of the table ventilation behind the hob. In addition, the filters are, for example, about 10 cm to 20 cm below the top edge of the device, i.e. the fume extraction opening. These are only accessible from above through the narrow vapor extraction opening, which is usually only about 50 mm to 100 mm wide.

It is therefore an object of the present invention to provide an improved structure of a table ventilation which ensures improved handling for the end user.

The object is achieved with a table ventilation system according to claim 1. Advantageous developments are described in the dependent claims.

The table ventilation according to the invention has a vapor extraction opening, a vapor deflection device, a fan, a filter module, an extension means and a drive unit for the motorized retraction and extension of the extension means. The table ventilation according to the invention is distinguished from the table ventilation systems known from the prior art in that the filter module can be moved by means of the drive unit from a filter module working position into a filter module removal position. This ensures that the filter module and, in particular, the filter of the filter module can be removed conveniently and inexpensively from the table ventilation system.

The vapor extraction opening, which is also referred to below as the extraction opening, forms the upper end of the table ventilation. The suction opening is preferably formed by the upper edge of a housing. The fan is located in the table ventilation below the vapor extraction opening. The vapor deflection device represents a device via which vapor is directed to the vapor extraction opening. The vapor deflection device therefore preferably projects upwards at least temporarily beyond the vapor extraction opening.

Since known table ventilation systems are usually located behind the hob, manual intervention in the device is difficult or impossible to achieve without additional handling assistance. In particular, the filter module and thus the at least one filter can be integrated into the effective area of the extension means, which can also be used to move the vapor deflection device. As a result, the filters of the filter module can be raised or extended and also lowered or retracted again for removal via the vapor extraction opening or the top of the device.

The term table ventilation is generally understood to mean extractor devices such as are used to extract cooking fumes, water vapor or water vapor enriched with fat that arise over a hob. The vapors mentioned as examples are also referred to as "vapor". In particular, such table ventilation systems are also referred to as "downdraft", that is to say as an extractor device in which the vapor is extracted downwards. "Below" means under the hob surface.

The table ventilation is advantageously a table ventilation which can be operated at least temporarily in a circulating air mode. This has the advantage that the installation does not require any further Measures in the surrounding building structure are required, since in particular exhaust ducts, exhaust grilles, insulation from the outside environment and the like are omitted. As a further development, it can be advantageous if the table ventilation is only suitable for recirculation mode.

According to the present invention, the filter module can comprise at least one filter which can have additional fastening components, stiffening devices or mounting connections. For example, the filter module can be a filter cassette. If several filter cassettes are necessary, all of the individual cassettes can be referred to as a filter module. In this case, the term filter module includes everything that has to be replaced with regard to the filters when servicing the table ventilation. As an alternative or in addition, the filter module can furthermore have means for collecting fluids and / or solids, for example oil pans, drip trays, grids and the like. At least one filter of the filter module is preferably a grease filter. Both an active filter and a passive filter can be used as a grease filter. In particular, the grease filter can be, for example, an expanded metal filter or an electrostatic filter. In this way, the particle separation from the vapor can be increased if necessary.

In the context of the invention, a blower is to be understood as a device which is suitable for generating a pressure difference that causes the vapors to flow through the vapor extraction opening into the table ventilation and through the filter module. The fan is preferably a radial fan.

The drive unit can be an electrical or manually operated device that is suitable for adjusting the extension means. The extension means can, for example, comprise a linkage, a spindle nut or some other device which is moved by the output of the drive unit, in particular can be moved up or down. This movement allows the filter module to be moved up or down at least temporarily. As an alternative or in addition, the extension means can have hydraulic and / or electrical components. The invention is described below essentially with reference to an extension means. According to the invention, the table ventilation can also have several extension means.

The filter module working position is a position in which the filter module is completely or partially inside the downdraft extractor. The filter modular working position is also referred to below as the filter working position. The filter module removal position, which is also referred to as the filter removal position, is a position in which the filter module is located completely or partially outside the table fan or inside the table fan adjacent to the vapor extraction opening. It is crucial that the filter removal position is a favorable position for changing a filter module or the filter module. In the filter removal position, the filter module can advantageously lie above or almost flush with a work surface top of a kitchen piece of furniture and thus with the vapor extraction opening.

The filter working position and / or the filter removal position can also include more than one position. The term “position” can therefore also be understood as “position range”.

The filter module preferably has at least one filter, which is a grease filter. According to one embodiment, the filter module additionally has at least one filter that represents an odor filter. In this embodiment, the approach according to the invention is based on the knowledge that, as a departure from established approaches, according to which odor filters are located deep inside the device below the grease filter unit and in particular in the direction of flow after the fan of the table ventilation, the odor filter can be positioned near the vapor extraction opening. The inventors have also recognized that the odor filter can be specifically provided as an exchangeable filter of a filter module, the position of which can be changed via the drive unit and which can therefore be easily removed.

The term odor filter includes filters that are suitable for filtering odor molecules from the vapor or removing odors in other ways. The odor filter can also be either a passive or an active filter. For example, the odor filter can be an (active) carbon filter, a zeolite filter or a filter with a plasma source. In other words, an odor filter is to be understood as a filter which a person skilled in the art usually considers capable of reducing the odor of the vapors as it flows through the odor filter.

In the filter removal position, the filter module can preferably be removed from an upwardly facing vapor extraction opening, whereby the filter module can be reached for replacement in a particularly simple and ergonomic manner.

It is particularly advantageous if the filter module as a whole and / or in parts is detachably arranged on a filter module holder. The filter module holder can be used to considerably simplify the installation and removal of the filter module when servicing the table ventilation. In addition, the Complexity of the filter module itself can be reduced if components for coupling the filter module to the extension means are arranged on the filter module holder. As a result, conventional filter modules can also be used for the table ventilation according to the invention by means of the filter module holder.

According to one embodiment, the vapor deflection device can be moved from a rest position into a working position by means of the at least one extension means. The vapor deflection device can preferably comprise a vapor guide plate holder and a vapor guide plate. The vapor guide plate can be arranged on the vapor guide plate holder. In particular, the vapor guide plate can be placed on the vapor guide plate holder or inserted into it from above. The vapor guide plate can preferably be a glass plate. The working position of the vapor deflection device is a position in which the vapor deflection device and in particular the vapor guide plate are located completely or partially outside of the table-top ventilator. The rest position of the vapor deflection device is a position in which the vapor deflection device and in particular the vapor guide plate are located completely or partially inside the table-top ventilator. A vapor deflection device is to be understood as a device that promotes guiding cooking vapors to the vapor extraction opening. In addition, the vapor deflection device can serve as a splash guard. It is advantageous that when the table ventilation is not in operation, the components of the table ventilation do not protrude beyond the vapor extraction opening. The kitchen furniture accommodating the table ventilation can thus be designed to be particularly inconspicuous. The provision of a glass plate has the advantage that the vapor guide plate is also less noticeable during operation. Glass also has the advantage that it is chemically inert and no consequential damage is caused by fat deposits from the vapors flowing past.

According to one embodiment, the filter module is moved directly via the at least one extension means. In this embodiment, it is also possible to speak of a direct coupling of the extension means to the filter module. In this embodiment, the extension means acts directly on the filter module, for example on a filter module holder. Since the extension means can be retracted and extended, that is to say raised and lowered, by a drive of the drive unit, for example a motor, the filter module can also be raised and lowered when the filter module is directly coupled to the extension means.

According to a further embodiment, the filter module is moved indirectly via an intermediate element. The intermediate element represents in particular a movable element of the table ventilation which can be retracted and extended by the at least one extension means. This intermediate element preferably represents the vapor deflection device. In this embodiment, the extension means, which can be moved via the drive, is not in direct contact with the filter module. Rather, the extension means is coupled to the filter module indirectly via the vapor deflection device. For this indirect coupling, the filter module is temporarily connected to the vapor deflection device.

According to a preferred embodiment, the filter module and at least temporarily the vapor deflection device are displaced via the at least one extension means. By using the same or the same extension means to move the filter module and the vapor deflection device, the construction of the table ventilation is simplified. In particular, a single drive, for example a single motor in the table ventilation system, can be used to move either the filter module or the vapor deflection device. If, in addition, the extension means via which the filter module is moved is the same as that via which the vapor deflection device is also moved, the construction of the table ventilation is further simplified.

According to one embodiment, both the filter module and the vapor deflection device are moved at least temporarily at the same time via the at least one extension means.

According to one embodiment, the drive unit has a first mode in which the filter module is decoupled from the extension means, and a second mode in which the filter module is coupled to the extension means. The first mode therefore includes all operating states of the drive unit that do not provide for the filter module to move. The second mode includes all operating states that provide for a process of the filter module. For example, the second mode can be a maintenance mode in which the filter module is exchanged. Nevertheless, the second mode can also be an operating state in which the filter module position is optimized. It is advantageous here that the drive unit and / or the extension means do not have to be duplicated, but can be used, for example, both for moving the filter module and for moving the vapor deflection device. This can reduce the complexity and thus costs, susceptibility to errors and weight of the overall system. Coupled is understood to mean that a dependency is created between the movement of the filter module and the movement of the extension means. The coupling can be formed, for example, by a stop. In general terms, the coupling can be via a frictional connection, frictional connection or positive connection or combinations thereof can be caused. The actual coupling does not have to take place on the filter module itself, but can in particular take place on the filter module holder or on another component. It is crucial that there is a different relative movement between the filter module and the extension means between the first and second mode.

According to one embodiment, the filter module is temporarily connected to the vapor deflection device via a switchable driver. In particular, this connection between the filter module and the vapor deflection device can be set in the second mode of the drive unit. Since the driver is switchable, the connected state of the filter module and the vapor deflection device can be established during the transition between the first mode and the second mode and canceled again during the transition from the second mode to the first mode. The connection between the filter module and the vapor deflection device represents a rigid connection, as a result of which the filter module is moved by the same amount when the vapor deflection device is moved.

According to a further embodiment, the connection of the filter module to the vapor deflection device takes place when a connection position of the vapor deflection device is reached or is at least prepared when this position is reached. With the aid of such a connection position, a predefined switching logic can be implemented which, depending on the position of the vapor deflection device, initiates or releases the connection between the filter module and the vapor deflection device. This can be done mechanically, electrically and / or with the aid of sensors, for example. It is crucial that there is a connection between “reaching the connection position” by the vapor deflection device and the “connection of the filter module and the vapor deflection device”. The phrase “prepared” is based on the fact that the connection does not necessarily have to take place at the same time and / or at the same time as the connection position is reached by the vapor deflection device. Rather, a logical, control-technical or mechanical measure can also be taken in this case, which takes place with further movement of the extension means to a foreseeable connection or a foreseeable release of the connection. The state in which the filter module is connected to the vapor deflection device is the state in which the filter module is indirectly coupled to the extension means.

According to a further embodiment, the connection position corresponds to an end position of the vapor deflection device. This has the advantage that accidental connection is avoided. Last but not least, technical precautions for connection can be better integrated into the table ventilation, as more space is available for built-in components in the end position. The end position of the vapor deflection device, which can also be referred to as the maximum position, is to be understood as a position in which the vapor deflection device is extended upwards beyond a normal operating position.

Alternatively, it can be advantageous that the connection is brought about or prepared by a movement sequence of two components that are movable relative to one another, in particular the filter unit and an intermediate element, in particular the vapor deflection device. For example, it can be advantageous if the vapor deflection device is stopped while it is being lowered and is raised again, thereby creating a coupling via a passive latching element. This has the advantage that the effective lifting height of the filter module can be freely selected, depending on where the change in direction of the vapor deflection device takes place.

According to one embodiment, the driver via which the filter module is connected to the vapor deflection device and via which the indirect coupling of the extension means to the filter module is generated can be arranged on the filter module. Via the connection created by the driver, the filter module is dragged along by the vapor deflection device when it moves. The driver is a switchable driver and can also be referred to as a switchable driver. The driver can be any device that provides a corresponding stop, in particular a pawl, a cam, a bolt, a hook or the like. The driver can be arranged on the filter module, on the filter module holder. This enables a simple mechanical indirect coupling or decoupling of the filter module with the extension means. A conventional extension means can therefore be used as the extension means, since none of them are necessary. Towing along requires that the force of the extension unit and the dimensioning of the extension means are sufficient to be able to move both the vapor deflection device and the filter module.

The table ventilation system advantageously has a single drive unit for the motorized retraction and extension of several components, in particular the vapor deflection device and the filter module. As a result, a cost-effective and space-saving drive can be achieved, since instead of using several individual drives, a single drive unit with means for mechanical or decoupling is sufficient. As a result, the filter module (odor filter, grease filter, oil collection container, liquid collection container) can be raised without additional drive units or extension devices. The filter module and in particular the filters can then be moved into an ergonomically favorable removal position by motor for cleaning purposes. In addition to the drive that is saved, the effort for electronic control is also minimized.

It is advantageous if the filter module rests on a sealing surface in the filter module working position within the table ventilation, the seal preferably being achieved by the weight of the filter module on the sealing surface. This ensures that no vapors are sucked past the filter module.

Alternatively or in addition it can be advantageous if the filter module is fitted into a filter shaft. A sealing surface can be formed on the active surface pair of the filter module and filter shaft. This ensures that bypass flows of vapors are avoided. The pair of active surfaces is preferably designed in such a way that a relative movement between the filter module and the filter shaft is possible.

According to one embodiment, a latching mechanism for connecting the vapor deflection device to the filter module is arranged on the filter module. A latching mechanism is to be understood as any device that enables a mechanical connection via at least the driver. The latching mechanism can therefore be designed in such a way that the driver is arranged in a switchable manner on the filter module, on the filter module holder or on another component connected to the filter module. With the latching mechanism, a modular unit can be provided which can be arranged on the filter module specifically for connection to the vapor deflection device. This can facilitate the manufacture and assembly of the downdraft extractor.

The latching mechanism can have the driver, a switching plate, a carrier plate and an upper switching lever and a lower switching lever. The carrier plate can be arranged rigidly on the filter module or a component connected to the filter module and the switch plate can be arranged so as to be movable relative to the carrier plate. The switching plate can preferably be moved into a first and second position relative to the carrier plate via the upper and lower switching lever. The latching mechanism preferably forms a trapezoidal arrangement which provides two different positions. The upper switch lever and the lower switch lever are preferably arranged on the switch plate in such a way that turning the upper switch lever by means of the vapor deflector activates the driver and turning the lower switch lever by means of the vapor diverter deactivates the driver.

The locking mechanism is designed in such a way that when the vapor deflection device drives past the upper switching lever, this is thereby turned over and the switching plate is shifted relative to the carrier plate. The driver is thereby preferably switched into an activated position. The folding can be given, for example, when the vapor deflection device is moved into an end position or some other predefined position. If the driver has been activated, it can serve as a stop for connecting the filter module to the vapor deflection device and thus for coupling the filter module to the extension means. In this case, the connection can come about in that the vapor deflection device moves downwards, passes the activated driver and only engages with it when it is started up again. For example, the driver can be pivotably preloaded for this purpose, so that the vapor deflection device can pass it when it is activated.

As an alternative or in addition, it can be advantageous that turning over the lower switching lever by means of the vapor deflection device deactivates the driver. The principle is analogous to flipping the upper gear lever, only the other way around. When it is turned over, the driver is switched into the deactivated position by shifting the switching plate relative to the carrier plate. If the vapor deflection device now moves upwards again after the lower switching lever has been turned over, the driver no longer forms a stop and there is no connection between the filter module and the vapor deflection device. This enables a particularly simple, safe and user-friendly connection of the filter module with the vapor deflection device and thus indirect coupling and decoupling of the filter module with the extension means. According to one embodiment of the invention, the user who wants to exchange the filter module or filter of the filter module only has to move the vapor deflection device to an upper end position, lower it and when it is started up again, the filter module is dragged along. It is particularly advantageous if this process is stored in a system control logic and runs automatically.

Directional information, such as above or below, unless otherwise stated, refers to table ventilation when installed.

It is particularly advantageous if the drive unit has a drive spindle to which the extension means is movably attached. In particular, by rotating the extension means on the drive spindle, the extension means can be moved up or down, that is to say moved. According to a preferred embodiment, the drive spindle has a length which corresponds to the stroke that is required to move the vapor deflection device from the rest position into the working position. Advantageously, the length is slightly larger than this stroke and is equal to the stroke that is required to move the vapor deflection device beyond the working position up into the end position. Since the travel path of the extension means is limited by the overall height of the entire device (height of the base cabinet), this overall height is often fully used by the main movement, the extension of the vapor deflection device. With the table ventilation according to the invention, however, by coupling and uncoupling the filter module with the extension means, the stroke available over the length of the spindle can be used on the one hand for extending the vapor deflector and on the other hand for extending the filter module. It is therefore not necessary to use a longer spindle, which corresponds to the sum of the strokes of these two movements. In addition, with such a configuration of the drive spindle, it can be ensured that the extension means per se can be a conventional extension means that does not have to be modified or only needs to be modified slightly. Costs and weight can also be saved if the drive spindle is as short as possible. There can be one or more identical or different drive spindles. The term drive spindles also includes components with the same effect, in particular hydraulic cylinders.

According to one embodiment, the drive unit has a transfer which is movably mounted, the coupling for the second mode takes place after the transfer has been moved out of the travel path of the extension means. In one position, the transmitter transmits the movement of an extension means to the vapor deflection device. In another position, the transmitter serves as a lock for the vapor deflection device. The transformer can therefore also be referred to as a changeover switch. In the position in which it is used as a lock, the transmitter releases the extension means for moving the filter module. As a result, when the carrier is pivoted, the transition takes place between the first mode of the drive unit, in which the extension means is decoupled from the filter module, to the second mode, in which the extension means is coupled to the filter module. Switching between these modes is user-friendly, simple and safe to operate due to their design. The term transformer or changeover switch is to be understood in the broadest sense as a body which can form a stop for the vapor deflection device. The stop must be present at least in the case of locking.

The transmitter is advantageously mounted in a guide in such a way that it swivels out when an interruption in the guide is reached, thereby forming the stop for the vapor deflection device and clearing a path in the guide for the extension means. A transmitter is to be understood as a body via which a power transmission from the extension means to the vapor deflection device is made possible. The transmitter is preferably mounted pivotably and arranged in a guide in such a way that the changeover switch swivels out in a position in which the guide is interrupted. The latter can be the case, for example, when the vapor deflection device is in a previously defined position. The transmitter can preferably be moved in the guide by the extension means and with continued operation of the extension means after the transmitter has been pivoted out, the extension means can move past the transmitter and come into contact with the filter module. The filter module can then be extended upwards by the extension means. The extension means can be a drive spindle nut, for example. In the state in which the extension means in the guide moves past the transmitter, the extension means prevents the transmitter from pivoting back into the guide.

Alternatively or in addition, it is advantageous if the table ventilation also has a suction opening cover which is closed when the table ventilation is switched off, with an extension of the extension means, i.e. an upward movement of the extension means, causes the suction opening cover to move into an open position becomes. Closing the suction opening when the table ventilation is switched off has the advantage that, on the one hand, the filters are protected from moisture, dust and dirt from the environment. On the other hand, the kitchen furniture accommodating the table ventilation can be designed in a particularly inconspicuous manner. The construction of the table ventilation is further simplified by moving the suction opening cover through the extension means or means.

According to one embodiment, the suction opening cover is prestressed. The preload can be selected so that the preload favors a closed position of the suction opening cover. Alternatively, the preload can be selected so that it favors an open position of the suction opening cover. It is crucial that the exhaust port cover is opened when the extension device is extended. The bias has the advantage that the movement of the suction opening cover into the prestressed direction is always guaranteed. This enables simple actuation of the suction opening cover to be achieved.

The suction opening cover is advantageously pretensioned via a spring. This ensures a long-lasting preload with a linear spring constant and, at the same time, low costs.

According to a preferred development, the table ventilation has only a single drive unit which enables three movements, in particular 1. opening the suction opening cover, which closes the table ventilation when the table ventilation is switched off; 2. Moving out the vapor deflection device, which directs the extraction of the cooking vapors to the vapor extraction opening and serves as a splash guard; and 3. Removing the filter elements for removal and cleaning.

• 1: eine erfindungsgemäße Tischlüftung in einer Querschnittsansicht gemäß einer ersten Ausführungsform;
• 2A und 2B: Detailansichten eines Rastmechanismus für eine erfindungsgemäßen Tischlüftung gemäß der ersten Ausführungsform als Querschnittsansicht zweier Betriebszustände;
• 3A bis 3F: Detailansichten eines Rastmechanismus für eine erfindungsgemäßen Tischlüftung gemäß der ersten Ausführungsform als perspektivische Darstellung für sechs verschiedene Betriebszustände;
• 4A bis 4E: die erfindungsgemäße Tischlüftung gemäß der ersten Ausführungsform als Querschnittsansicht für fünf verschiedene Betriebszustände;
• 5A bis 5E: die erfindungsgemäße Tischlüftung gemäß einer zweiten Ausführungsform als Querschnittsansicht für fünf verschiedene Betriebszustände;
• 6A bis 6E: die erfindungsgemäße Tischlüftung gemäß der zweiten Ausführungsform als Querschnittsansicht für fünf verschiedene Betriebszustände, zeigend die Stellungen eines passiven Rastelements in den jeweiligen Betriebszuständen;
• 7A bis 7F: die erfindungsgemäße Tischlüftung gemäß einer dritten Ausführungsform als Querschnittsansicht für sechs verschiedene Betriebszustände; und
• 8A bis 8C: die erfindungsgemäße Tischlüftung gemäß der dritten Ausführungsform als Querschnittsansicht für verschiedene Betriebszustände, zeigend die Stellungen einer Entkopplungs- und Sperrmechanik in drei exemplarischen Betriebszuständen;

Exemplary embodiments of the invention are described below with reference to the figures. Here show schematically:

• 1 : a table ventilation according to the invention in a cross-sectional view according to a first embodiment;
• 2A and 2 B : Detailed views of a locking mechanism for a table ventilation system according to the invention according to the first embodiment as a cross-sectional view of two operating states;
• 3A to 3F : Detailed views of a locking mechanism for a table ventilation system according to the invention according to the first embodiment as a perspective illustration for six different operating states;
• 4A to 4E : the table ventilation according to the invention according to the first embodiment as a cross-sectional view for five different operating states;
• 5A to 5E : the table ventilation according to the invention according to a second embodiment as a cross-sectional view for five different operating states;
• 6A to 6E : the table ventilation according to the invention according to the second embodiment as a cross-sectional view for five different operating states, showing the positions of a passive locking element in the respective operating states;
• 7A to 7F : the table ventilation according to the invention according to a third embodiment as a cross-sectional view for six different operating states; and
• 8A to 8C : the table ventilation according to the invention according to the third embodiment as a cross-sectional view for different operating states, showing the positions of a decoupling and locking mechanism in three exemplary operating states;

In 1 a simplified cross-sectional view of a first embodiment of the table ventilation is shown. The table ventilation has a vapor extraction opening 14th on, which in the embodiment shown, the upper end of the table ventilation 10 forms. The vapor extraction opening 14th preferably extends in the width direction of a hob, not shown, behind the rear edge of the hob. The width preferably corresponds to the vapor extraction opening 14th the width of the hob. From the vapor extraction opening 14th extends the housing 69 the table ventilation 20th downward.

In the case 69 is the fan in the lower area 18th intended. In the upper area of the case 69 are in the illustrated embodiment a vapor deflection device 16 and a filter module 20th intended. The vapor deflection device 16 has a vapor guide plate in the embodiment shown 34 in the width direction of the table ventilation 10 extends and preferably represents a glass plate. The vapor guide plate 34 is in the rear area of the table ventilation 10 , in particular adjacent to the rear edge of the vapor extraction opening 14th . The vapor guide plate 34 lies in the vertical. The vapor guide plate 34 is in the embodiment shown by a vapor guide plate holder 32 held. Preferably the vapor guide plate 34 at the side edge through the vapor guide plate holder 32 held. To the vapor deflector 16 adjacent, in particular offset to the front, is a filter module 20th arranged. The filter module 20th also extends in the width direction of the table ventilation 10 and is to the vapor guide plate 34 arranged in parallel. The filter module 20th has in the embodiment shown two filters, in particular a grease filter 30th and an odor filter 26th on. The grease filter 30th is in the filter module 20th above the odor filter 26th arranged. The grease filter 20th can on the odor filter 26th rest on or otherwise be connected to it. The filter module 20th has a filter module holder in the embodiment shown 28 on. In the embodiment shown is inside the housing 69 a sealing level 62 , which can also be referred to as a sealing wall, is provided. The sealing level 62 extends horizontally and is provided at such a height that the upper edge of the filter module 20th in the state in which the filter module 20th on the sealing level 62 with the lower edge, especially the lower edge of the filter module holder 28 , rests below the vapor extraction opening 14th lies. The exhaust port cover 12 is in the 1 shown in the open state in which this 12 in the housing 69 , in particular in the front area of the housing 69 below the vapor extraction opening 14th is in the vertical.

The table ventilation 10 has a drive unit 22nd from the in 1 only one connecting shaft can be seen, the two drive spindles 48 in the side areas of the table ventilation 10 are arranged connects. The shaft and thus the drive spindles are in the embodiment shown by a motor 70 driven.

The first embodiment of the invention shown in 1 shown sees short drive spindles 48 (in 1 only shown in dashed lines) for an extension device (not visible). Accordingly, the drive spindle 48 a length L. on, which corresponds at least to the stroke xW, which is necessary to the vapor deflector 16 from a rest position WR to the in 1 to move shown working position WA. Preferably with the short drive spindles 48 their short stroke thanks to a switchable locking hook / coupling mechanism (see 2A and 2 B) that act as a locking mechanism 38 can be designated and will be explained in more detail later, used multiple times. This allows the filter module 20th If necessary, over the device limit, in particular over the vapor extraction opening 14th move beyond. In the embodiment shown, the length is L. the drive spindles 48 larger than the stroke xw . Thus, the drive spindle 48 an end position WM of the vapor deflection device 16 be achieved.

When actuating the drive unit 22nd becomes the filter module 20th and / or the vapor deflection device 16 via the vapor extraction opening 14th move up. In the in 1 The figure shown is the vapor deflector 16 from a rest position WR to a working position WA by the stroke xW of the vapor deflection device 16 proceed.

2A shows an embodiment of a locking mechanism 38 in an installation situation according to the first embodiment of the invention in a first operating position. This operating position corresponds to the first mode, namely the state in which the extension means (not shown) are not connected to the filter module 20th is indirectly coupled. The locking mechanism 38 is on the filter module 20th arranged. More precisely, is the locking mechanism 38 arranged on a filter module holder (not shown). The locking mechanism 38 includes a driver 36 , a switch plate 40 , a carrier plate 42 as well as an upper gear lever 44 and a lower gear lever 46 . In the variant shown is the carrier plate 42 rigidly attached to the filter module (not shown). On the carrier plate 42 are the switch plate 40 slidable and the upper gear lever 44 , the lower gear lever 46 as well as the driver 36 pivoted. An essentially trapezoidal suspension is thereby achieved. The switch plate 40 also engages in the driver 36 such one that one is over either the top gear stick 44 or the lower gear lever 44 induced relative movement of the switching plate 40 relative to the carrier plate 42 to switching, that is to say activating or deactivating the driver 36 leads.

2 B shows the locking mechanism 38 to 2A in an installation situation according to the first embodiment of the invention in a second operating position. This operating position corresponds to the second mode, namely the state in which the drive unit (not shown) is indirectly coupled to the filter module via the vapor deflection device. According to 2 B becomes the top gear stick 44 operated when it is thrown. A flick of the gear lever 44 is only possible upwards because the switch plate 40 is already at the bottom. The vapor deflection device now moves 16 from bottom to top along the - not with the vapor deflector 16 connected filter module 20th - on the upper gear lever 44 past, it swings upwards and pulls the switch plate 40 with which thereby the driver 36 switches to an activated position. The folding occurs when the vapor deflector 16 is moved into an end position WM, which can also be referred to as connection position WVer. The indirect coupling of the extension means is achieved by flipping it 24 with the filter module 20th prepared, because a retraction of the vapor deflection device 16 below the activated driver 16 creates a stop for the vapor deflector 16 on the driver 36 , which occurs when the vapor deflector is started up again 16 leads to an intervention in which the filter module 20th from the vapor deflector 16 is dragged along. The driver 36 can be spring-loaded, so that in the activated state the vapor deflector can drive over it 16 this temporarily presses inwards and the driver 36 after the vapor deflection device has passed 16 deflects again to provide the stop. Similarly, the driver 36 deactivated by the vapor deflector 16 is driven into a lower extreme position, in which this the lower shift lever 46 kills. How out 2A evident, this can only be the case if the driver 36 is activated and therefore also the lower gear lever 46 from the switch panel 40 protrudes accordingly.

The various switching processes according to the first embodiment are illustrated in FIG 3A to 3F illustrated. The locking mechanism is shown 38 , which has a method of the vapor deflection device 16 is switched. More precisely, the switching takes place in the 3A to 3F via a vapor guide plate holder 32 , the along the filter module 20th moves, that is, is moved relative to this.

3A shows a state that is a closed position of the table ventilation 10 corresponds. The vapor deflection device 16 is on stroke xW = 0 in the rest position WR of the vapor deflector 16 . The lower gear lever must be in this position 46 inevitably be deactivated because the vapor deflection device 16 directly adjacent to this. Consequently, there is also the driver 36 in a deactivated position and the upper gear lever 44 is in an activated position, i.e. deflected position.

3B shows the vapor deflector 16 in a working position WA, which is just below the upper shift lever 44 is located. Only when the vapor deflector 16 is moved further upwards via this working position and is thus brought to a maximum position, 3C , becomes the top gear stick 44 folded over and thereby over the switch plate 40 the driver 36 activated. In this state, the connection position WVer, which in this case is also an end position WM of the vapor deflection device 16 represents, the indirect coupling of the extension means (not shown) with the filter module 20th prepared. This means that if the vapor deflector is moved again 16 this one indirect coupling of the filter module 20th will cause with the extension means. This becomes the drive unit 22nd switched from a first mode to a second mode.

The connection of the filter module 20th with the vapor deflector 16 takes place spatially and temporally offset, namely when the vapor deflection device 16 the pretensioned, activated driver 36 first run over, as in 3D shown, then drives below it, as in 3E shown, and then engages with it, as in 3E pictured.

As a result, the vapor deflection device is started up 16 from this state onwards, the filter module 20th from the vapor deflector 16 is dragged along. To get to the starting point, as in 3A shown to return, only the vapor deflector has to be 16 back to the rest position WR according to 3A be driven.

In the event that the connection was accidentally prepared, for example by accidentally moving the vapor deflector 16 In the connection position WVer, the prepared coupling can be achieved by moving the vapor deflector back 16 can be reversed to the rest position WR.

Examples of heights of the stroke of the extension device are given in Table 1:

Table 1: Position of vapor deflection device Height of stroke [mm] Upper gear lever Carrier Lower gear lever See figure Rest position WR 0 Activated Disabled Disabled 3A Work position WA 200 Activated Disabled Disabled 3B Connection position VWer 265 Disabled Activated Activated 3C Driving over the activated carrier 100 Disabled Activated (against Spring preload temporarily deactivated) Activated 3D Driving under the carrier 80 Disabled Activated Activated 3E Coupling the carrier 90 Disabled Activated Activated 3F Filter removal position FE 265 Disabled Activated Activated 3F

In the example shown in Table 1, the filter module holder can be moved 175 mm upwards. All length specifications are to be understood purely as examples and should not be understood to restrict the invention to them.

The 4A to 4E illustrate the aforementioned operating states of the first embodiment of the table ventilation 10 in connection with the switching positions of the suction opening cover 12 . In the rest position WR according to 4A the suction opening cover is located 12 in the horizontal and covers the vapor extraction opening 14th completely off. The filter module 20th lies on a sealing plane 62 on. After switching on the table ventilation 10 moves the vapor deflector 16 up, driven by the drive unit 22nd . The drive unit 22nd is with a movement device 58 , from the in 4A to 4E only the bearing point is shown schematically. Through the drive unit 22nd becomes the bearing point of the movement device 58 move down. The connection between the drive unit and the movement device 58 can for example be provided via a pin guided in a rail and a spring that is connected to the pin. The components of this connection and the movement device 58 are in 4A to 4E Not shown. By moving the bearing point downward, the exhaust port cover pivots 12 from the horizontal to an inclined position in which the front end of the suction port cover 12 below the level of the vapor extraction opening 14th lies. The filter module 20th is still on the sealing level 62 on. This in 4B The state shown corresponds to an exemplary hub x <75 mm of a drive spindle nut (not shown). 4C shows the vapor deflector 16 in the connection position WVer with a height of, for example, 265 mm. The further extension becomes the bearing point of the movement device 58 move further down. The exhaust port cover 12 is completely open in this position and lies vertically inside the housing 69 . The driver, not shown, is then activated in this position. The filter module is still there 20th on the sealing level 62 on. In 4D the vapor deflector is located 16 in a position below the activated driver 36 (please refer 3E) shortly before the coupling between the drive unit 22nd and filter module 20th . Up to the point of coupling, namely when the vapor deflector 16 a hub x of for example 90 mm, the filter module is 20th on the sealing level 62 on. Will the vapor deflector 16 from the in 3D Move the position shown further up, so the vapor guide plate holder arrives 32 with the swiveled out driver 36 as in 3F shown, engages and thereby pulls the filter module 20th with up. 4E shows the filter module 20th in a filter module removal position FE.

In the described first embodiment, the locking mechanism is 38 on the filter module 20th arranged and can have a driver 36 from the vapor deflector 16 be dragged along. Alternatively, the locking mechanism 38 but also on the vapor deflector 16 be arranged and a driver 36 the filter module 16 drag along. The locking mechanism 38 can be designed roughly the same for both alternatives.

The 5A to 5E and FIGS. 6A to 6E disclose a second embodiment of the table ventilation according to the invention 10 . According to this embodiment - as in the first embodiment - a short drive spindle (not shown) is provided. The connection of the filter module 20th with the vapor deflector 16 does not take place via a locking mechanism 38 according to the first embodiment, but via a passive locking element 66 (please refer 6A to 6E) , which mechanically locks or hooks the vapor deflector 16 with the filter module 20th enables. In the 6A to E is the movement of the passive locking element 66 schematically next to the table ventilation 10 shown. The passive locking element 66 is a driver that is attached to the vapor deflector 16 is provided. From a locking element starting position RA, the passive locking element can 66 an extension movement of the vapor deflector is guided in a backdrop 16 follows without the filter module 20th with the exit device 24 to pair. The locking element 66 only then engages in the filter module 20th one when the vapor deflector 16 is partially retracted and extended again. The locking element 66 In this case, it jams with the filter module 20th and drag it along.

As in the 5A to 5E shown, different operating states are possible. In the rest position WR of the vapor deflector 16 according to 5A is the exhaust port cover 12 closed. The second embodiment of the table ventilation 10 differs in addition to the use of a passive locking element 66 from the first embodiment in that the filter module 20th in a filter modular working position FA within a filter shaft 68 is arranged. The filter shaft 68 serves to guide the air through the filter module 20th . In a second working position according to 5B the vapor deflector is located 16 in a working position WA at a lifting height of 235 mm, for example. The filter module 20th is still in its starting position, the filter modular working position FA. The exhaust port cover 12 is open in this operating state. According to an in 5C The third operating state shown is the vapor deflection device 16 fully extended to a lift height of, for example, 265 mm. The filter module is at the same time 20th raised so that it is flush with the top of the table ventilation 10 completes, in particular the vapor extraction opening 14th . In a fourth operating state is according to 5D the vapor deflection device 16 in a partially lowered position and engages via the passive locking element 66 into the filter module 20th on. The partially lowered position can in particular correspond to a lifting height of 80 mm. 5E shows a fifth operating state. The filter module is in this operating state 20th in a filter removal position FE. The lifting height corresponds to 265 mm, for example. The strokes mentioned as an example x following can the filter element 20th according to the second embodiment, for example, can be raised by up to 155 mm.

In the 6A to 6E are the operating states according to 5A to 5E in connection with the passive locking element 66 pictured. Based on 6A and 6B it can be seen that the passive locking element 66 in normal operation of the table ventilation 10 while the vapor deflector is being shut down 16 along the filter module 20th with the direction of movement of the vapor deflector 16 is dealt with. The passive locking element is at the lowest point 66 in a direction away from the filter module 20th tilted. The third operating state according to 5C and 6C is achieved in that from a lifting height of Hub x ~ 235 mm the passive locking element 66 when starting up in the direction of the filter element 20th is tilted, causing jamming of the filter module 20th with the passive locking element 66 takes place. When lowering, below the lift height of lift x ~ 235 mm, the filter module lies 20th again in its filter module work position FA, whereby the deadlock is released. While the vapor deflector is being shut down 16 can the filter module 20th at any hub x with the drive unit 22nd be coupled, creating the drive unit 22nd is switched from a first mode to a second mode. This coupling takes place by stopping and extending the vapor deflector again 16 , whereby the vapor deflector 16 with the filter module 20th jammed and this from the vapor deflector 16 is dragged upwards, as in the 6D and 6E is shown.

The 7A to 7F and FIGS. 8A to 8C disclose a third embodiment of the table ventilation according to the invention 10 . The table ventilation 10 according to the third embodiment has a drive spindle 48 on whose length L. sufficient to both the vapor deflection device 16 as well as the filter module 20th to proceed. The coupling for the second mode takes place according to the third embodiment after a transformer, which also acts as a switch 50 has changed its position. In general terms, the switch is used 50 suitable for power transmission from the extension means 24 to switch so that instead of the vapor deflector 16 the filter module 20th is driven or extended. As a result, there is no longer a towing drive, but a direct drive for the filter module 20th via the extension means 24 the drive unit 22nd .

8A provides the table ventilation 10 in a switched-off state. In this state, the vapor deflection device is 16 in a rest position WR and the filter module 20th is in a filter module working position FA. The drive unit 22nd drives over the extension means 24 and the switch 50 the vapor deflection device 16 on as soon as the table ventilation 10 goes into an operating state, something like in 7B pictured. The power is transmitted via the drive spindle 48 which in turn have a drive spindle nut 64 the switch 50 and the vapor deflector 16 drives. The switch 50 is inside a tour 52 arranged. The filter module 20th has a filter traverse 60 on. Above the filter traverse 60 , in the direction of the vapor extraction opening 14th , is a grease filter 30th arranged. Below the filter traverse 60 is the odor filter 26th arranged. The drive spindle 48 drives the drive spindle nut 64 and the switch 50 on until the toggle switch 50 a break 54 the leadership 52 reached in the direction of extension and laterally in the interruption 54 pivots. In the example shown, this lateral pivoting is achieved by an eccentric mounting of the switch 50 within the leadership 52 achieved.

The balance of forces at the switch 50 can be illustrated as follows. A vertical force from the lead screw nut 64 grabs the switch at the bottom 50 at. Because the switch 50 eccentric in leadership 52 is mounted, causes the vertical force from the out of the drive spindle nut 64 a torque on the switch 50 which put this in contact with the leadership 52 brings. About contact with the leadership 52 a lateral force is generated that causes the switch to pivot 50 prevents. As long as the contact between the switch 50 and leadership 52 exists, the equilibrium of forces results in a vertical shift or change in stroke, as the switch 50 in the leadership 52 is mounted adjustable in height. If the lateral force disappears, for example at an interruption 54 the leadership 52 , then causes the torque on the changeover switch 50 a pivoting of the same.

The essential components for the switchover switch 50 , Leadership 52 as well as interruption 54 are in their entirety as a decoupling and locking mechanism 70 Are defined. The decoupling and locking mechanism is designed so that when the switch is pivoted out, there is a path for the drive spindle nut 64 is released and at the same time the vapor deflector 16 is locked. The locking mechanism 70 is also designed so that a retraction of the drive spindle nut 64 below the break 54 pivoting the switch back 50 causes.

The coupling for the second mode therefore takes place when the switch 50 when an interruption is reached 54 the leadership 52 swings out while making a stop 56 for the vapor deflection device 16 trains, this locked, and in the guide 52 a way for the exit means 24 releases. By clearing the path for the extension means 24 can in the embodiment shown, the drive spindle nut 64 to the filter traverse 60 and the filter module 20th extend it, see 7E and 7F .

In other words, there is a possibility that a longer drive spindle is available 48 with a decoupling and locking mechanism 70 holds in front of the filter module 20th , especially the filter cassette from the vapor extraction opening 14th the table ventilation 10 to drive. The vapor deflector 16 , in particular the glass pane, in its upper end position by the drive unit 22nd decoupled and locked at the same time, so that only the filter module remains for the additional route 20th , especially the filter cartridge is moved.

In an embodiment not shown, the filter module can provide a filter holder in a separate cross member. In particular, grease filters can 30th with oil pan and activated carbon filter (odor filter 26th ) can be taken up by a separate traverse. The support traverse can be guided in the side parts so that the filter modules can be moved flexibly in height. As an alternative or in addition, cross members for a glass pane or light pane can be decoupled. In this case, a glass mounting cross-member is guided in the side parts.

Independently of the above-mentioned embodiments, the individual elements can i) cover the suction opening 12 ; ii) Vapor deflector 16 , especially the vapor guide plate holder 32 or the vapor guide plate 34 ; and iii) filter module 20th be mechanically coupled.

The suction opening cover 12 be opened via a spring. For closing the exhaust port cover 12 can, for example, lower the glass pane and the suction opening cover via a cover driver against the spring force 12 shut down. The glass pane can either rest by its own weight on the vapor guide plate holder, which can also be referred to as the glass pane driver of the drive spindle, or is mechanically connected to it in the lifting direction so that the glass pane always moves together with the glass pane driver. The filter module 20th is, for example, only guided by its own weight and guided separately in the table ventilation 10 and if necessary, it is operated by mechanically switchable coupling elements from the driver of the drive spindle or by suitable power transmission via the vapor guide plate holder 32 , in particular glass pane holder, raised. If the vapor deflector 16 is lowered, the drive unit can 22nd the exhaust port cover 12 keep closed against a spring force. This means that when the vapor deflector is extended 16 the exhaust port cover 12 open by the spring force.

List of reference symbols

Q _A

Filter modular working position

F _E

Filter module removal position

L.

length

R _A

Locking element starting position

S.

Direction of flow

W _A

Working position of the vapor deflector

W _M

End position of the vapor deflector

W _R

Rest position of the vapor deflector

W _ver

Connection position

x

Hub

xw

Stroke of the vapor deflection device

10

Table ventilation

12

Exhaust port cover

14th

Vapor extraction opening

16

Vapor deflection device

18th

fan

20th

Filter module

22nd

Drive unit

24

Exit means

26th

Odor filter

28

Filter module holder

30th

Grease filter

32

Vapor guide plate holder

34

Vapor guide plate

36

Carrier

38

Locking mechanism

40

Switch plate

42

Carrier plate

44

Upper gear lever

46

Lower gear lever

48

Drive spindle

50

Toggle switch

52

guide

54

Interruption

56

attack

58

Movement device

60

Filter traverse

62

Sealing level

64

Drive spindle nut

66

passive locking element

68

Filter shaft

69

casing

70

engine

Claims (14)

Table ventilation (10), comprising - a vapor extraction opening (14), - a vapor deflection device (16), - a blower (18), - a filter module (20) - at least one extension means (24) and - a drive unit (22) for motorized on - and extending the at least one extension means (24), characterized in that the filter module (20) can be moved by means of the drive unit (22) from a filter module working position (F _A ) into a filter module removal position (F _E ). Table ventilation (10) Claim 1 , characterized in that the filter module (20) as a whole and / or in parts is detachably arranged on a filter module holder (28) and / or wherein the filter module (20) has at least one filter which is a grease filter, and preferably the filter module ( 20) additionally has a filter that represents an odor filter (26). Table ventilation (10) Claim 1 or Claim 2 , characterized in that the vapor deflection device (16) can be moved from a rest position (W _R ) into a working position (W _A ) by means of the at least one extension means (24), the vapor deflection device (16) preferably having a vapor guide plate holder (32) and a vapor guide plate and the vapor guide plate (34) is arranged on the vapor guide plate holder (32), wherein the vapor guide plate (34) is in particular a glass plate. Table ventilation (10) after one of the Claims 1 to 3 , characterized in that the filter module (20) is moved directly via the extension means or indirectly via an intermediate element, in particular the vapor deflection device. Table ventilation after one of the Claims 1 to 4th , characterized in that the filter module (20) and at least temporarily the vapor deflection device (16) are moved at least temporarily via the at least one extension means (24). Table ventilation after Claim 5 , characterized in that both the filter module (20) and the vapor deflection device (16) are moved at least temporarily at the same time via the at least one extension means. Table ventilation after one of the Claims 1 to 6th , characterized in that the drive unit (22) has a first mode in which the filter module (20) is decoupled from the extension means (24), and a second mode in which the filter module (20) is coupled to the extension means (24) , having. Table ventilation after one of the Claims 4 to 7th , characterized in that the filter module is temporarily connected to the vapor deflection device (16) via a switchable driver. Table ventilation (10) Claim 8 , characterized in that the connection of the filter module (20) to the vapor deflection _{device (16) takes place or is at least prepared when a connection position (W Ver} ) of the vapor deflection device (16) is reached, in particular the connection position (Wver) of an end position of the vapor deflection device (16) ) corresponds. Table ventilation (10) after one of the Claims 8 or 9 , characterized in that a locking mechanism (38) for connecting the vapor deflection device to the filter module (20) is arranged on the filter module (20), comprising the driver (36), a switch plate (40), a carrier plate (42) and an upper switching lever (44) and a lower switching lever (46), the upper switching lever (44) and the lower switching lever (46) being arranged on the switching plate (40) in such a way that the upper switching lever (44) can be turned over by means of the Vapor deflection device (16) activates the driver (36) and turning over the lower switch lever (46) by means of the vapor deflection device (16) deactivates the driver (36). Table ventilation (10) after one of the Claims 3 to 10 , characterized in that the drive unit (22) has a drive spindle (48) to which the extension means (24) is movably attached and the length (L) of the drive spindle (48) corresponds to the stroke that is required to move the vapor deflection device ( 16) to move from the rest position (W _R ) to the working position (W _A ). Table ventilation (10) after one of the Claims 1 to 5 , characterized in that the drive unit has a transmitter (50) which is movably mounted and the coupling between the extension means (24) and the filter module (20) for the second mode takes place after the transmitter (50) has been moved out of the travel path of the extension means . Table fan after Claim 12 , characterized in that the carrier (50) locks the vapor deflection device (16) in the position moved out of the travel path and releases the extension means (24) for moving the filter module (20), with the carrier (50) in particular in a guide (52 ) is mounted in such a way that it swings out when an interruption (54) in the guide (52) is reached and thereby forms a stop (56) for the vapor deflection device (16). Table ventilation (10) according to one of the preceding claims, characterized in that the table ventilation (10) has a suction opening cover (12) which is closed when the table ventilation (10) is switched off, whereby an extension of the extension means (24) causes the suction opening cover (12) is moved into an open position, in particular the suction opening cover (12) being pretensioned.

Images