Extraction module for extracting air from a toilet bowl

Abstract

The invention relates to a suction module (1) for extracting air (L) from a toilet bowl (20) which is connected to a flushing pipe (23) with a water supply and to a wastewater pipe (22) for the disposal of wastewater, wherein the extraction of the air (L) takes place via at least one opening (2a) and is directed into at least one opening (9a) of the wastewater pipe (22) or adapter wastewater pipe (9), comprising at least one suction pipe (4), at least one suction device and at least one discharge pipe (8) with which the two openings (2a, 9a) are connected, wherein, when a flush is activated to clean the toilet bowl (20), a closure is formed in the flushing pipe (23) or adapter flushing pipe (2) to close the opening (2a) of the flushing pipe (23) or the adapter flushing pipe (2).The invention is characterized in that the at least one suction device connects the at least one suction pipe (4) with the at least one discharge pipe (8) or is arranged laterally on the suction pipe (4) or the discharge pipe (8), and that the suction module (1) is designed to be fully installed in the ceramic cavity (21) of the toilet bowl (20).The invention also relates to a suction module (1) for extracting air (L) from a toilet bowl (20) which is connected to a flushing pipe (23) with a water supply and to a wastewater pipe (22) for the disposal of wastewater, wherein the extraction of the air (L) by the suction module (1) takes place via at least one opening (2a) and is directed into at least one opening (9a) of the wastewater pipe (22) or adapter wastewater pipe (9), characterized with a valve flap (3) arranged in the flushing pipe (23) or adapter flushing pipe (2), which is designed to close the opening (2a) of the flushing pipe (23) or adapter flushing pipe (2) with a top surface (3c) when the water supply is activated and to release the opening (2a) of the flushing pipe (23) or adapter flushing pipe (2).

Description

[0001] The invention relates to an extraction module for extracting air from a toilet bowl according to the preambles of claims 1 and 6.

[0002] There are known extraction systems that draw unpleasant odors from the toilet bowl. If this exhaust air is to be returned to the bathroom, filter systems are used to purify it. These filter systems are often integrated into the cistern, making retrofitting without demolition work impossible. Extraction systems are also known that, in addition to filtering, ionize the exhaust air or treat it with chemical fragrances. These extraction systems are also complex to operate and not suitable as a retrofit solution.

[0003] Furthermore, extraction systems are known that consist of a special concealed cistern with a unique pipe layout. Here, odors are extracted via the flushing pipe system and blown into the wastewater network through a complex pipe system. Due to the significant space required, these systems are concealed behind a wall, known as a pre-wall. These systems, too, can only be installed in conjunction with extensive demolition work followed by the reconstruction of the pre-wall and are therefore unsuitable for retrofitting.

[0004] EP 3983617 A1 discloses a suction device that is arranged between the flush pipe and the drain pipe and is completely gas-tight. Since the connection points of the toilet bowl are standardized, but not the design of the toilet bowl itself, the suction device disclosed here does not fit into every ceramic cavity of the toilet bowl. The available installation space varies in depth between different manufacturers, making a universal retrofit solution difficult. In some cases, the usable depth of the ceramic cavity is only 15 mm to the tile surface or the wall. Similarly, flush-mounted cisterns with covers, which are often used as replacements for previously concealed cisterns, for example, often do not allow for a larger installation space.

[0005] EP1235038A2 and GB2237825A reveal a suction device for a toilet bowl, in which the exhaust air is discharged via a separate pipe.

[0006] In DE 10052433 A1 and DE 10354540 A1, a suction device with a pump is installed between the flushing pipe and the wastewater pipe. A valve flap prevents water from entering the suction pipe of the device.

[0007] US 1,351,854 discloses only a valve flap that pivots between a closed position of the flushing line and a closed position of the drain line. A curved flow element is arranged on the upper side of the valve flap, which, when the flush is activated, forcibly closes the drain line. The drain and flushing lines are connected in a Y-shape and have large cross-sections.

[0008] CN101476344 A shows an extraction module in which an additional pipe is installed in the toilet bowl. The exhaust air is directed into the drain alongside the drain pipe.

[0009] Accordingly, the invention is based on the objective of designing a suction module such that it can be used as a retrofit solution for almost any toilet bowl without a filter and can be integrated either in the ceramic cavity of the toilet bowl or in the associated cover box. At the same time, it should be avoided that when extracting moist or odorous air from the toilet bowl, air is simultaneously extracted from the cistern, which could trigger a malfunction, e.g., a reduction in suction power.

[0010] The invention solves the stated problem by means of a device having the features specified in claim 1 and claim 6. Advantageous embodiments of the invention are defined in the dependent claims.

[0011] The extraction module of the present invention serves to extract air from a toilet bowl which is connected to a flushing pipe with a water supply and to a wastewater pipe for the disposal of wastewater.

[0012] The air is extracted via an opening, which is preferably located in the upper circumference of the flushing pipe or an adapter flushing pipe and is directed into an opening of the wastewater pipe or adapter wastewater pipe.

[0013] The suction module comprises at least one suction pipe, at least one suction device, and at least one discharge pipe, to which the aforementioned openings are connected. When a flush is activated to clean the toilet bowl, a closure is provided in the flush pipe or adapter flush pipe to close the opening of the flush pipe or adapter flush pipe.

[0014] This prevents flowing or standing water from entering the outlet pipe and the suction pipe, thus preventing water loss from the cistern or malfunction of the suction module. This results in a space-saving solution that allows the suction module to be retrofitted even into narrow ceramic cavities.

[0015] No air extraction system with a filter needs to be installed in the cistern. The extraction module according to the invention, with its essential components, is installed almost exclusively between the flush pipe and the drain pipe within the ceramic cavity of the toilet bowl. The power source required for the suction device and the trigger for its activation can be installed separately from the extraction module, also within the ceramic cavity or in the area of ​​the toilet bowl. Alternatively, the necessary power source and trigger for its activation can also be located outside the toilet bowl. The cistern or the tile surface does not need to be removed.

[0016] A fan, pressure booster, or compressor can be used as a suction device, designed to generate a sufficiently strong airflow to draw air from the toilet bowl through the flushing pipe and into the drainpipe. Although only a fan is shown in the exemplary embodiments below, any other suitable suction device can be used that provides sufficient airflow and the necessary compactness for at least partial installation within the ceramic cavity of the toilet bowl.

[0017] The at least one suction pipe can extend at least partially in a spiral shape around the flushing pipe or the flushing pipe adapter. The spiral contour allows for a space-saving design in which both openings, preferably located at the upper circumference of the pipes, are connected. The upper circumference is defined as the upper half of the pipes or adapters of the flushing pipe and the wastewater pipe. From the upper opening of the flushing pipe or the flushing pipe adapter to the housing, the cross-section of the at least one suction pipe can widen first continuously, then abruptly, to guide the airflow in an energy-efficient and as quiet a manner as possible.

[0018] The at least one suction device of the extraction module can be arranged in or on a housing that connects the at least one extraction pipe to the at least one discharge pipe, or is laterally connected or flanged to the extraction pipe or the discharge pipe. The connection between the two components, which consists at least of the extraction pipe on one side and the discharge pipe on the other, can also take place here, with the suction device being arranged between them or laterally.

[0019] An elastic and sealing compensating element, positioned between the exhaust pipe and the housing or extraction pipe, allows for radial and axial compensation of play between the components during assembly. It also compensates for angular misalignment and manufacturing tolerances.

[0020] Because at least one suction pipe can have a widening that increases or aligns the suction pipe with the cross-section of the suction device or its housing, the extraction module can be designed to be low-noise.

[0021] The suction module is designed to be fully installed within the ceramic cavity of the toilet bowl, as the cross-sectional change of the expansion, along with the housing, extends exclusively into this ceramic cavity. The connecting pipe sections, along with the adapter flush pipe and adapter connecting pipe, protrude into or behind the tile surface or into the wall. The valve flap bearing is also located within the tile surface or wall area. The suction module has a nearly continuous, flat outer contour where it meets the tile surface or wall.

[0022] If adapters for the flush pipe and the outlet pipe are used for the suction module, these adapters each have an outer diameter that corresponds to the inner diameter of the flush pipe or drain pipe, allowing them to be inserted. Alternatively, the suction module can also be connected to the extended flush pipe and the drain pipe. This allows the suction module to be installed not only in the ceramic cavity of the toilet bowl, but also in the area of ​​the tiled backsplash or wall, and behind the tiled backsplash or wall in a false wall or cover box, or even in a conventional floor-standing toilet that does not have a ceramic cavity. The ceramic cavity of the toilet bowl is defined as the open rear side of the toilet bowl, which is closed off by the wall, the tiled backsplash, or the cover box.

[0023] The at least one suction pipe, including the flushing pipe or flushing pipe adapter, can be manufactured as a single piece using 3D printing or as a multi-part injection-molded part. Similarly, the at least one exhaust pipe can be manufactured as a single piece using 3D printing, including the wastewater pipe or wastewater pipe adapter, or as a multi-part injection-molded part.

[0024] The closure for the opening in the flushing pipe or flushing pipe adapter can be designed as a diaphragm, slide valve, rotating valve flap, or pivoting valve flap. The diaphragm can also be manufactured as a single unit with the flushing pipe or flushing pipe adapter. However, like the valve flap, the diaphragm can also be designed as a separate component. Alternatively, the closure can consist of two valves or be a pivoting valve flap, which are configured to selectively open or close either the flushing pipe or the flushing pipe adapter and the suction pipe.

[0025] The suction module according to the invention for extracting air from a toilet bowl is connected to a water supply via a flush pipe and to a wastewater pipe for the disposal of wastewater, feces, toilet paper, and similar materials, as well as air. The air is extracted by the suction module through an opening located in the flush pipe or in an adapter flush pipe, and is directed into an opening in the wastewater pipe or adapter wastewater pipe.

[0026] For this purpose, a valve flap is arranged in the flush pipe or adapter flush pipe. This flap is designed to close or open the opening in the flush pipe or adapter flush pipe when the water supply is activated. When the suction module is activated, the valve flap preferably seals the flush pipe or adapter flush pipe almost tightly against the cistern. This prevents air from being drawn out of the cistern, which can lead to unwanted noise and malfunctions. A possible intake of air from the cistern could potentially render the suction power of at least one suction device insufficient to remove the air from the toilet bowl.

[0027] The valve flap is designed to pivot between an open and a closed position of the opening in the adapter flushing pipe or in the flushing pipe itself. The pivot point for pivoting the valve flap in the direction of flushing water flow is preferably located upstream of the opening. The pressure of the flushing water can thus be used to move the valve flap into the closed position, thereby sealing the opening of the flushing pipe or the adapter flushing pipe, thus protecting the suction device from water. When the flushing function is no longer activated, the valve flap can release the opening again by its own weight and seals the flushing pipe or the adapter flushing pipe to the water tank with the front part of its underside.

[0028] Preferably, a manual or automatic actuating element or control module can be designed to move the valve flap from an open position to a closed position or from a closed position to an open position. Depending on the operating principle, this allows the extraction module to be actuated or switched off, and the extraction pipe can also be actively opened or closed.

[0029] The actuating element or control module is designed to switch at least one suction device on or off.

[0030] A connecting element is preferably arranged between the control module and the extraction module, wherein the connecting element has means designed to move and hold the valve flap in the closed position in the event of disassembly or failure of the control or control module.

[0031] Preferably, the manual or automatic actuating element or control module is connected directly or indirectly to the valve flap by means of a pull element or a pull / push element. Alternatively, the pivotable axis can also be driven to pivot the valve flap.

[0032] The top of the valve flap may have a sealing element designed to correspond to and close the opening of the flushing tube or adapter flushing tube.

[0033] The underside of the valve flap can have a concave contour in the area of ​​the joint to maximize the flow cross-section of the purge pipe when the suction module is closed. This means that the concave contour of the underside transitions into a convex contour in the area of ​​the lower front and may be interrupted by a spoiler-like contour.

[0034] To seal the adapter flush pipe or the flush pipe itself, the front of the valve flap can have a convex shape, the radius or contour of which, in the open position, corresponds to the inner radius or contour of the adapter flush pipe or the flush pipe. This creates a seal on the lower circumference of the adapter flush pipe or the flush pipe, preventing water and air from escaping back to the cistern.

[0035] In the adapter flushing pipe or in the flushing pipe itself, a stop is arranged behind the opening on the inner upper surface, in the direction of the flushing water flow. This stop interacts with the front part of the valve flap's upper surface. This prevents the elastic sealing element at the opening from being overloaded and simultaneously creates an effective, flat stop to limit the valve flap's pivoting movement. Furthermore, it improves airflow to the valve seat.

[0036] Further measures improving the invention are described in more detail below together with a description of a preferred embodiment of the invention with reference to the figures.

[0037] They show: Figure 1: A perspective view of the ceramic cavity of a toilet bowl with the suction module; Figure 2a: A perspective view of the suction module; Figure 2b: A cutaway view of the suction module; Figure 3a: A partial section through a toilet bowl with the suction module; Figure 3b: A further section through the toilet bowl with a wall extension; Figure 4: A partial section through a toilet bowl with the suction module and the valve flap in the adapter flush pipe; Figure 4a: An enlarged view showing the valve flap in the adapter flush pipe; Figure 5: An enlarged perspective view showing the valve flap in the adapter flush pipe; Figure 6a: The valve flap in the adapter flush pipe in the open position; Figure 6b: The valve flap in the adapter flush pipe in the closed position due to the flushing water; Figure 6c: The valve flap in the adapter flush pipe in the closed position due to the actuating element;Figure 6d the valve flap with various flow elements; Figure 6e the valve flap in perspective from the front and back; Figure 7 a representation of the actuating element; Figures 8a - 8e an assembly sequence for the suction module; Figure 9 a representation of the suction module with two suction pipes; Figure 10 a representation of a toilet bowl with another control module; Figure 11 the control module with the connection element; Figure 11 a detailed view of the connection element; Figure 12 a detailed view of an actuator of the control module with the valve flap.

[0038] Figure 1Figure 1 shows a toilet bowl 20 with a ceramic cavity 21 arranged on its rear side, which is mounted to a wall, tiled backsplash, or intermediate box (not shown). The ceramic cavity 21 of the toilet bowl 20 is defined as the open rear side of the toilet bowl 20, which is closed off by the wall, tiled backsplash 24, or cover box 29. The suction module 1 according to the invention is mounted within the ceramic cavity 21 and comprises at least one suction pipe 4, at least one suction device, and a discharge pipe 8. The suction module 1 also includes a valve flap 3 (not shown) which is arranged within a flush pipe 23 or an adapter 2 for the flush pipe and interacts with the suction pipe 4. The hinge 3a for the valve flap 3 does not have to be arranged within the ceramic cavity 21 but can also be arranged in the cover box 29, behind the tiled backsplash or wall 24, or in the wall cavity.A fan 6, a pressure booster, or a compressor can be used as a suction device, designed to generate a sufficiently large airflow to draw air from the toilet bowl through the flushing pipe and into the waste pipe. Although only a fan 6 is shown in the exemplary embodiments below, any other suitable suction device can be used that provides sufficient airflow and the necessary compactness for installation in the ceramic cavity 21 of the toilet bowl 20. The fan can be encapsulated directly in or with the housing using a brushless direct drive with electrical commutation. The brushless direct drive prevents sparking. Encapsulating the electrical commutation with the housing makes it watertight.

[0039] In this embodiment, the adapter 2 for the flushing pipe and the suction pipe 4 are designed as a single, integrated component, which can be made in one piece or in multiple parts. A receptacle or housing 5 for a fan 6 is connected to the suction pipe 4. The fan 6 is designed to draw air from the flushing pipe 23 or from the adapter of the flushing pipe 2.

[0040] The housing 5 is connected to a blowout pipe 8, through which the extracted air L is blown into the drain pipe 22 or into the adapter drain pipe 9. Using the suction module 1, odorous air can be extracted from the toilet bowl 20 via the flush pipe 23 and introduced into the drain pipe 22. Instead of a housing located between the blowout pipe 8 and the suction pipe 4, the suction device can also be located laterally on the blowout pipe 8 or suction pipe 4. In this case, the blowout pipe 8 and suction pipe 4 are connected to each other.

[0041] As an alternative to extracting odorous air, the extraction module 1 can also extract humid, stale air from the sanitary room via the adapter flush pipe 2. The illustration of the Figure 1 This is particularly evident in the compact design and arrangement of the suction module 1 within the ceramic cavity 21, the depth of which to the wall or tile surface 24 can be as little as 15 mm in an unfavorable case. Since the depth to the wall or tile surface 24 is often only so limited in the upper area of ​​the ceramic cavity 21, the suction pipe 4 has a maximum width of 15 mm in the upper area where it at least partially rests against the flushing pipe 23 or adapter flushing pipe 2.

[0042] Also shown is an optional actuating element 30 in a first embodiment, with which the extraction module 1 can be actuated. This actuating element 30 is used in Figure 7The mechanism is described in detail and can be positioned, at least partially, between the toilet bowl 20 and the tiled surface or wall 24, so that a manually operated switch or lever 31 protrudes laterally from the toilet bowl 20. The actuating element 30 shown here is designed for the manual operation of the extraction module 1 and can be used optionally or alternatively replaced by an automatic actuating element. An energy source (not shown), such as a power bank or a battery, can be arranged within the ceramic cavity to supply the necessary energy to the at least one fan.

[0043] In Figure 2a and 2b The suction module 1 is shown, with a seal 25, 26 mounted on each of the adapters flushing pipe 2 and wastewater pipe 9, which are mounted into the connections of the toilet bowl 20. Figure 2bshows a cutaway view of the extraction module 1, in which the airflow can be seen.

[0044] The adapter flushing pipe 2 has an opening 2a that can be closed by a closure (shown in Fig. 2b and 3), which may preferably be arranged in the upper circumferential region so that, when the toilet is flushed, it can absorb as little water as possible. The opening 2a can project into the flush pipe 23 or into the adapter flush pipe 2 and can have a rectangular or square cross-section, which narrows in a funnel shape at least in the suction direction towards the toilet bowl 20 or the waste pipe 22 or adapter waste pipe 9. Inside the adapter flush pipe 2, a valve flap 3 is arranged as a closure for the closable opening 2a, which in this illustration releases the opening 2a to the suction pipe 4. Thus, when the at least one fan 6 is activated, for example, odorous or moisture-laden air, or even air from the toilet bowl 20, can be conveyed into the waste pipe 22. In this embodiment, the suction pipe 4 extends in a spiral shape.spirally around the adapter flushing tube 2, the rectangular cross-section of which can continuously increase towards the housing 5. Preferably, the suction tube 4, starting from the opening 2a, lies at approximately 90° to the circumference of the flushing tube 23 or adapter flushing tube 2. In this area, the suction tube 4 preferably has a maximum width B of 15 mm in order to be inserted into a ceramic cavity 21 ( . Fig. 4a ), which can be very narrow in the upper area.

[0045] The cross-section of the intake manifold 4 could also have a different cross-sectional shape, such as round or oval. The transition from the intake manifold 4 to the housing 5 can be achieved by means of a widening 4a, thereby increasing the rectangular cross-section to the cross-section of the housing 5. In the exemplary embodiment of the Figure 2bOnly one fan 6 is shown. Multiple fans 6 can also be used in series or parallel to each other. The arrangement and number of fans 6 depend on the volume of air to be extracted and the available space.

[0046] This ensures that when at least one fan 6 is activated, a continuous airflow is generated that acts across the entire fan cross-section. This reduces vibrations and disruptive noise.

[0047] The odorous or humid air is conveyed by the fan 6 into an exhaust pipe 8, which is connected directly or indirectly (via the adapter wastewater pipe 9) to the wastewater pipe 22, and thus discharged via the wastewater pipe 22. A further indirect connection can also be made via the cistern 28 in the wall-hung frame.

[0048] Here too, the adapter wastewater pipe 9 has an opening 9a (not shown), which is preferably located in the upper circumferential region of the adapter wastewater pipe 9. This prevents flowing or standing water from entering the discharge pipe 8. Backflow of the extracted air into the toilet bowl 20 is prevented by the water-filled siphon.

[0049] A sealing compensating element 7 can be arranged between the housing 5 and the discharge pipe 8, allowing for radial or axial adjustment during assembly. The preferred arrangement of the openings 2a and 9a applies both to the use of the adapters flushing pipe 2 and wastewater pipe 9, as well as to the use of the suction module 1 directly between the flushing pipe and wastewater pipe. The compensating element 7 can also be arranged between the suction pipe 4 and the discharge pipe 8 if the suction device is flanged laterally to one of the two pipes.

[0050] The suction module 1 according to the invention can be used with the adapters flushing pipe and drain pipe 2, 9, which are inserted into the already installed flushing and drain pipes 22, 23. Alternatively, the suction module 1 can also be mounted with a complete and thus extended flushing and drain pipe 22, 23. A connection element 32, onto which the actuating element 30 is placed during assembly, is visible behind the suction pipe 4 in this view. The valve flap 3 can be actuated via this element.

[0051] The Figure 3a shows the perspective installation position of Figure 1In a lateral sectional view, the wastewater pipe 22 and the flushing pipe 23 are shown behind the wall or the tile backsplash 24. The adapters for flushing pipe 2 and wastewater pipe 9 are designed to be inserted or pushed into the wastewater and flushing pipes 22 and 23 embedded in the wall. This illustration shows that the suction module 1 can be installed not only in the ceramic cavity 21 of the toilet bowl 20, but also behind the tile backsplash 24 or the wall, provided that an open space is accessible in the connection area of ​​wastewater pipe 22 and flushing pipe 23.

[0052] This illustration also shows the wastewater pipe seal 25, which is located between the wastewater pipe adapter 9 and the toilet bowl 20. In this illustration, the valve flap 3 is in a lower, open position and seals the flush pipe adapter 2 to the cistern 28 (not shown), preventing air from being drawn in and thus avoiding potential performance losses.

[0053] The opening 2a of the adapter flush pipe 2 is now open, and the air L from the toilet bowl 20 can be extracted via the suction module 1. The air L passes through the suction pipe 4, through the fan 6, into the exhaust pipe 8, and is blown through the opening 9a into the adapter drain pipe 9. Due to the water level in the siphon of the toilet bowl 20, the extracted air L can no longer enter the toilet bowl 20.

[0054] When the toilet is flushed, the flush water S flows into the toilet bowl 20 in the direction of the arrow. The water flow lifts the valve flap 3 and closes the opening 2a of the flush pipe adapter 2. At this moment, air L cannot be extracted by the suction module 1. If no flush water S flows into the toilet bowl 20, the airflow for extraction through the suction module 1 is automatically and continuously released again, drawing the air L from the toilet bowl 20 into the drain pipe 22 in the direction of the arrow. Instead of the flush pipe adapter 2 and the drain pipe adapter 9, the components of the suction module 1 can also be connected directly to the flush pipe 23 and drain pipe 22.

[0055] Figure 3bFigure 1 shows the arrangement of a toilet bowl 20 with a cistern 28, in which the cistern 28, the waste pipe 22, and the flush pipe 23 are arranged in a cover box 29 in front of a wall 24. The suction module 1, as in the other figures, is arranged in the ceramic cavity 21 of the toilet bowl 20, but can also be arranged inside the cover box 29.

[0056] Figure 4 The figure shows in a lateral sectional view the closure of the upper opening 2a of the adapter flushing pipe 2, which is designed here as a valve flap 3. Figure 4a This is shown in an enlarged view. Figure 4aFigure 1 shows the opening 2a located in the upper circumferential region of the adapter flush pipe 2, onto which the suction pipe 4 is mounted. Due to the often confined space in the upper region of the ceramic cavity 21, the width B of the suction pipe 4, starting from the opening 2a where the suction pipe 4 rests against the flush pipe 23 or adapter flush pipe 2, is preferably a maximum of 15 mm. The width of the suction pipe 4 can increase further in the area extending towards the housing 5. The opening 2a projects into the adapter flush pipe 2 and can have a funnel-shaped end, at least in the suction direction towards the toilet bowl 20. A valve flap 3 is arranged in or on the adapter flush pipe 2 and is designed to pivot within the adapter flush pipe 2 via a hinge 3a. In this embodiment, the valve flap 3 is designed as an independent component that can be actuated into an open and closed position via the hinge 3a.The valve flap 3 could also be arranged within the opening 2a of the intake manifold adapter 2 and be movable only vertically. Alternatively, the valve flap 3 could also be designed as a diaphragm that is integrally but movably connected to the intake manifold adapter 2 in the area of ​​the joint 3a shown here.

[0057] The valve flap 3 shown here is depicted in an open position for the suction pipe 4. This allows odorous or humid air from the toilet bowl 20 to flow via the adapter flush pipe 2 into the suction pipe 4 to the fan 6, and from there via the exhaust pipe 8 into the adapter drain pipe 9. With a suitable design, the valve flap 3 can move into and remain in this position solely due to its own weight. This can be assisted by the addition of a spring or a weight to hold it open. However, this does not yet activate the suction module 1 and, in particular, the fan 6. When the toilet is flushed, the flush water from the cistern 28 can close the valve flap 3, thus sealing the opening 2a in the adapter flush pipe 2 watertight.In the direction of water flow into the toilet bowl, the joint 3a is positioned upstream of the opening 2a of the adapter flush pipe 2. The valve flap 3 has a bottom surface 3b that is designed as a convex, flow-optimized contour towards the adapter flush pipe 2, so that the valve flap 3 pivots into the closed position even with a low flow of flush water. When the water flush is triggered, the valve flap 3 is fluidly switched, and this position is maintained as long as the flush water is flowing. As the water level in the flush pipe 23 falls, the valve flap 3 lowers continuously due to gravity, immediately reopening the path for suction. In addition to its ability to seal the opening 2a in the adapter flush pipe 2 watertight with its top surface 3c, the valve flap 3 is also designed to seal the flush pipe with its bottom surface 3b.

[0058] An alternative embodiment of the valve flap 3 provides for its active movement between the open and closed positions by means of an actuating element. In very hard water, the automatic pivoting movement can be hindered by the deposition of limescale or other residues, particularly if the extraction module 1 has not been operated, for example, after a prolonged absence of the users. This also enables demand-based operation, allowing the extraction module to be operated for a predetermined period. The actuating element can, for example, be designed as a spring-assisted actuator that is activated only when the valve is in the closed position – i.e., when the flush is activated. The open position can be achieved not only by its own weight, but also by a spring force or an actuator.Another embodiment for actuating the valve flap 3 can be achieved by the actuating element 30, whereby the valve flap 3 is actuated and, depending on this, the fan 6 is also switched on or off. This is described in detail in . Figure 7 described.

[0059] Figure 5Figure 1 shows a perspective view of the interaction between the valve flap 3 and the adapter flushing pipe 2 in the area of ​​opening 2a. The hinge 3a of the valve flap 3 is located upstream of opening 2a in the direction of flow of the flushing water S. The valve flap 3 has a bottom surface 3b with a flow-optimized contour that is concave in cross-section but convex in the longitudinal direction. The top surface 3c, on the other hand, is essentially concave, so that the shape of the valve flap 3 directs the air L flowing into opening 2a. A sealing element 3e can also be arranged on the top surface 3c of the valve flap 3, designed to seal the opening 2a to the suction pipe 4 airtight and watertight. Inside the adapter flushing pipe 2, a stop 2b is located downstream of opening 2a on the inner top surface in the direction of flow of the flushing water S, and this stop interacts with the front part of the top surface 3c of the valve flap 3.The front face 3d of the valve flap 3 is provided with a downwardly convex radius that corresponds to the curved or tubular shape of the adapter flush pipe 2 in such a way that it seals the adapter tightly when the valve flap 3 is in the open position. This prevents air from being drawn out of the cistern 28 when the suction module 1 is activated, thus preventing a malfunction caused by the resulting negative pressure in the cistern 28. When the suction module 1 is activated, odor-laden air L flows from the toilet bowl 20 (not shown) along the top 3c of the valve flap 3 through the opening 2a into the suction pipe 4 towards the fan 6. The valve flap 3 can be designed as a hollow body which, due to its low weight, is pivoted into the closed position by the flushing water S without any further assistance.To implement on-demand operation, where the suction module is operated for a predetermined time, the valve flap can also be spring-loaded, manually operated, or actuated in the open and / or closed position, thus ensuring the function of the suction module 1 at all times. This illustration also shows the flow-optimized shape of the suction pipe 4, which extends spirally around the adapter flush pipe 2 and widens in cross-section towards the housing 5 to ensure optimal airflow with low resistance and noise. The widening of the suction pipe 4 to the cross-section of the valve housing 5 occurs in the direction of the toilet bowl 20 (not shown here), in order to allow the suction module 1 to be installed with the smallest possible installation volume, i.e., with a maximum suction pipe width of 15 mm in the upper part, even in narrow ceramic cavities 21 and with minimal distance to the tile surface / wall 24.This illustration also shows the connecting element 32 of the optional actuating element 30, as well as a first contact element 33, which is designed as a magnet. When the first contact element 33 is in contact with the second contact element 34 (. Figure 7When the actuator 30 is connected and the actuator is manually or automatically operated, the valve flap 3 can be moved into the closed position via the pull element 35, which can be, for example, a rope, wire, or sheet metal strip. The opening 2a of the adapter flushing pipe 2 is then closed. A control unit 40 can be configured to stop or switch off the fan 6 based on a signal from a sensor or an electromechanical trigger. Both the open and closed positions of the valve flap 3 can be detected by a sensor, enabling the control unit 40 to switch on a corresponding actuator and / or activate or switch off the fan 6. The pull element 35 can secure the closed position of the valve flap 3 if the flow of air L and flushing water S acting on the underside 3b of the valve flap 3 is insufficient to close the opening.For example, in very hard water with its associated deposits, the fluid-actuated closing function of the valve flap can be impaired. Additionally, a demand-based operation can be implemented, allowing the extraction module to operate for a predetermined period.

[0060] Figure 6a The valve flap 3 is shown in the open position when the extraction module 1 is activated, so that the odorous air L from the toilet bowl 20 is extracted through the adapter flush pipe 2 via the opening 2a into the suction pipe 4 and further via the fan 6 into the wastewater pipe 25. The opening 2a of the adapter flush pipe 2 can be square or rectangular and can advantageously widen or open in a funnel shape at least towards the toilet bowl and to both sides, which improves the airflow during extraction.

[0061] In this illustration, sealing lips 2c are visible in the adapter flush pipe 2, against which the underside 3b of the valve flap 3 can rest in the side area of ​​the adapter flush pipe 2. The sealing lips 2c are not necessary for sealing the flush pipe 23 or the adapter flush pipe 2, but they improve the long-term sealing provided by the underside 3b of the valve flap 3, as deposits in the flush pipe 23 can impair the sealing effect. In this open position, the valve flap 3 is designed with its entire outer contour to seal the adapter flush pipe 2 almost tightly against the cistern 28. Among other things, the underside 3b of the valve flap 3, with its outer edges, interacts with the sealing lips 2c in the adapter flush pipe 2. Furthermore, the front 3d of the valve flap 3, due to its convex shape, seals the lower circumferential area of ​​the adapter flush pipe 2.

[0062] The vertical dashed line shows the outer surface of the cover box 29 or the outer surface of the tiled backsplash or wall 24, into which the adapter flushing pipe 2 can be at least partially inserted. The suction pipe 4 can rest against this outer surface. The pivot point or joint 3a of the valve flap 3 can be located within the cover box 29 or within the tiled backsplash or wall 24. The vertical position of the pivot point or joint 3a of the valve flap 3 is at least at the level of the lower edge of the funnel-shaped opening 2a shown here, or slightly above it. This arrangement of the joint 3a results in only minimal horizontal movement of the sealing element 3e of the valve flap 3 during opening and closing, which reduces seal wear.

[0063] In the open position, the front surface 3d of the valve flap 3 has a radius that corresponds to the inner radius of the adapter flush pipe 2 or the flush pipe 23. The outer contour of the valve flap 3 is also formed in the area of ​​the hinge 3a to seal the preferably upper circumferential region of the adapter flush pipe 2. When air is extracted from the toilet bowl 20, the stop 2b of the adapter flush pipe 2 and the upper surface 3c of the valve flap 3 serve as flow guide elements. Likewise, a small, unlabeled step can be arranged on the upper surface of the valve flap shortly before the hinge 3a, through which the air L is directed into the funnel-shaped opening 2a of the adapter flush pipe 2.

[0064] On the underside 3b of the valve flap 3, a further flow element 3f in the form of a rib is arranged, which functions as a spoiler or, with a double rib, as a hydrofoil, as is known in kitesurfing or sailing. This further increases the lift of the valve flap 3 when the flush is activated, in order to move it into the closed position, as described in Figure 6bThis is evident. When the odor-laden air L is actively extracted, an automatic switch to flushing mode can occur. Triggering the water flush causes the valve flap 3 to switch hydrodynamically, and the valve flap 3 remains in the closed position, thus sealing the opening 2a of the adapter flushing pipe 2. With motor assistance via a manually or automatically triggered actuating element 30, a first pull element 35 can move the valve flap 3 into the closed position. The dynamic pressure of the air moving in front of the flushing water S and the dynamic pressure of the flushing water S create a pressure difference above and below the valve flap 3, which causes it to pivot into the closed position solely by fluid dynamics. This effect is amplified by the buoyancy of the valve flap 3, which is designed as a hollow body. As long as the flushing water S is flowing, the closed position is maintained.As the water level in the flushing pipe 23 or adapter flushing pipe 2 falls, the valve flap 3 can lower continuously by gravity, thus reopening the path for suction through the suction module 1. This hydrodynamic-mechanical process for pivoting the valve cap 3 into the open or closed position can be assisted manually or by actuators, which can be useful, for example, for maintenance purposes, or if heavy limescale deposits are expected in the flushing pipe 23 or adapter flushing pipe 2.

[0065] In the Figure 6b and 6cThe valve flap 3 is shown in the closed position, which closes the opening 2a of the adapter flushing pipe 2 solely by the flow of the flushing water S, or manually or with the assistance of actuators. The valve flap 3 pivots about the pivot point of the joint 3a, so that the front part of the upper surface 3c rests against the stop 2b, and the sealing element 3e closes the opening 2a airtight and liquid-tight. The guide element 2d, arranged in the flow direction of the flushing water S upstream of the joint 3a, is designed to direct the flushing water S to the rear of the valve flap 3, so that the impact of the flushing water S exerts an additional torque on the valve flap 3 in the closed position. In this illustration, the pull element 35 has not been activated by the actuating element 30. The first pull element 35 rests in a loop on the sealing element 3e of the valve flap 3.In Figure 6c, the valve flap 3 is in the closed position and seals the opening 2a of the adapter flushing pipe 2, thus preventing the spread of sewer odors from the wastewater pipe 22. This can inevitably occur as soon as the at least one fan 6 is switched off. The closed position of the valve flap 3 to seal the opening 2a of the adapter flushing pipe 2 can preferably always occur when the manual or actuator operation has failed or is not functioning, in order to prevent the spread of sewer odors from the wastewater pipe 22.

[0066] In Figure 6dThe valve flap 3 is shown with various fluid-hydraulic flow elements 3f, for example, a rudder in the left illustration, a hydrofoil in the middle illustration, and a spoiler in the right illustration. As long as the flushing water S is flowing, the closed position is maintained. As the water level in the flushing pipe 23 or adapter flushing pipe 2 falls, the valve flap 3 can lower continuously due to gravity, thus reopening the path for suction through the suction module 1.

[0067] In Figure 6eThe contour of the valve flap 3 is further clarified. The front surface 3d has a convex contour on its underside 3b, designed to seal the adapter flushing pipe 2 in the open position. The curvature of the underside 3b on the front surface 3d corresponds to the inner radius of the adapter flushing pipe 2a and acts as a centering element within the adapter flushing pipe 2 in the open position. The remaining underside 3b of the valve flap 3, i.e., the rear section from the pivot joint 3a to the upwardly curved part of the front surface 3d, is concave to ensure that the flow of flushing water S is not obstructed in the closed position. The contour of the underside 3b of the valve flap 3 is most clearly visible in the closed position. The underside 3b has a concave contour, followed by an upwardly curved convex section on the front surface 3d, which seals the adapter flushing pipe 2 in the open position.

[0068] A manually triggerable actuating element 30 is installed in Figure 7 The actuating element 30 is designed to be attached to or connected with a connecting element 32. Preferably, the connecting element 32 can have a guide (not further specified) and a releasable fastening.

[0069] A first contact element 33 of the connecting element 32, which may be designed as a magnetic sliding piece, has a connection on a side associated with the extraction module 1 to the first pull element 35, with which the valve flap 3 can be moved into the closed position. When the actuating element 30 is attached to the connecting element 32, a connection between the two components is established by the guide and the releasable fastening element, which may be designed as a spring-loaded locking lug.

[0070] The first magnetic contact element 33 connects with a second magnetic contact element 34 of the actuating element 30, both of which are then arranged to slide movably in or along a guide 36.

[0071] In this embodiment, a lever 31 is arranged on the actuating element 30. This lever is manually pressed or moved from a central actuating position, in which the valve flap 3 is open and the fan 6 is running, to a lower rest position. During this movement, a second pull element 38 pulls the contact elements 33, 34 into or along the guide 36 towards the lever 31, thereby activating a switch 37. This switch sends a signal to a control unit 40 or switches the at least one fan 6. The control unit 40 is optional.

[0072] With the movement of the contact elements 33, 34 towards lever 31, the first pull element 35 is simultaneously ( Fig. 6a, 6bThe contact element 33, which is connected to the first contact element 33, is tensioned and moves the valve flap 3 into the closed position. The control unit 40, activated by the switch 37, switches off the fan 6.

[0073] In an upper position, where the second pull element 38 is relaxed, the valve flap 3 can be actively released and moved into the open position. The position of the lever 31 can be preset by means of a detent device and secured against damage by a mechanical stop. The control unit 40 can be configured to activate LEDs for status indication. Furthermore, the power of the fan 6 can be controlled and varied via the control unit 40. The extraction module can be controlled, programmed, and integrated into daily operations via the control unit 40 using a wireless connection, for example, via a Bluetooth or WLAN interface to a home automation system, a smartphone, or an app. The control unit 40 can, for example, have inputs for the power supply of the extraction module, which is supplied by an internal or external power source (e.g., battery or power bank).A battery management system or a voltage converter can also be part of the control unit 40, so that the extraction module 1 is supplied with power via a classic power supply, a solar system or the accumulator or power bank.

[0074] The actuating element 30 can have a flattened portion 39 which is clamped between the edge of the ceramic cavity 21 and the tile surface, as shown in Figure 1 As shown, a wall-hung toilet is usually not placed directly against the tile, but is separated from it by a soundproofing mat. This mat is compressed from approximately 4 mm to approximately 1 mm in a selected area.

[0075] In the presentation of the Figure 7The area to the left of the flattened section 39 is then located within the ceramic cavity 21, and the area to the right of the flattened section 39 is located outside the ceramic cavity. A USB port 41 can be located in the exposed part of the actuator 30 outside the ceramic cavity 21. This port can be used to charge the battery or power bank located in the ceramic cavity 21, or to directly program or update the control unit. Furthermore, the USB port 41 can directly supply power to the system.

[0076] Instead of manual operation via lever 31, the actuating element 30 can also be triggered and operated by a sensor, for example, by a sensor detecting whether the toilet bowl 20 is occupied or a motion sensor detecting the presence of a person in the bathroom. Other alternatives are conceivable. This sensor can be used to control the control unit 40 and operate or switch off the fan 6, eliminating the need for the second pull element 38 and lever 31.

[0077] The valve flap 3 can be opened or closed simultaneously or with a time delay by means of an actuator, by the actuator releasing or tightening the first pull element 35. The sensors described for detecting the open and closed positions of the valve flap 3 are also designed to send their signals to the controller 40 for controlling the fan 6. The section protruding from the actuating element 30 has at least one charging port, which can be a USB port 41, and may also have LEDs for status indication.

[0078] The valve flap 3 thus has three functional positions. In its first, freely functioning position, the valve flap 3 pivots hydraulically and mechanically between an open and closed position in the flush pipe 23 or adapter flush pipe 2. When the toilet is flushed, the valve flap pivots into the closed position, thus preventing the extraction of odorous air. If no water flows through the flush pipe 23, the valve flap 3 pivots into an open position by its own weight, allowing the fan 6 to extract the odorous air. Simultaneously, the connection to the cistern is almost completely sealed. The fan 6 can be switched on or off via a sensor.

[0079] In a second operating position, the valve flap 3 is moved manually or by actuator into the closed position, thus preventing the extraction of odorous air. At the same time, the fan 6 is deactivated.

[0080] In a third operating position, the valve flap 3 is moved manually or by actuator into the open position, thus enabling the extraction of odor-laden air. At the same time, the connection to the cistern is almost completely sealed and the fan 6 is activated.

[0081] The flap has a free, unobstructed swivel range and is connected via a coupling to an actuator (or lever) which ensures that the free swivel range is restricted, if necessary, by movable stops so that the flap can be moved in two switching positions.

[0082] The actuator (or manual lever) allows 3 switching positions via 3 positions: 1. Top flap 2. Freely pivoting flap 3. Bottom flap

[0083] For this purpose, the pivoting movement of the valve flap is first converted into a linear movement, which can be achieved via a pull element 35 or a pull / push element 42. The movement of the pull element 38 or pull / push element 42 is guided out of the ceramic through a gap and transmitted directly or indirectly to a lever 31 or to a first contact element 33 within a guide 36. This first contact element 33 moves within a guide 36 and can couple or connect with a second contact element 34. Stops are arranged within the guide 36 between which the first contact element can move freely, so that the valve flap 3 can pivot freely between an open and closed position. The second contact element 34 can be moved actuator-wise or manually and thus forms the movable stops for the first contact element 33.The first contact element 33 corresponds to a switch 37 or sensor, which enables position detection for the valve flap 3.

[0084] Figure 8aFigure 24 shows a tiled surface 24 or a wall in which two fastening elements 27, for example in the form of studs, are attached. The upper opening is the flush pipe 23, and the lower opening—in the drain pipe 22—already contains the drain pipe adapter 9 with its associated seal 25. The outlet pipe 8, with its sealing compensating element 7 and housing 5, into which the fan 6 has already been inserted, sits on the drain pipe adapter 9, which has an opening 9a preferably located in the upper circumferential region. The outlet pipe 8, with its sealing compensating element 7 and housing 5, into which the fan 6 has already been inserted, can be manufactured as a single piece or in two parts. It is also possible to mount or combine the drain pipe 22, which is made of plastic and is usually newly installed when the toilet bowl 20 is mounted, with the outlet pipe 8. In this case, the drain pipe 22 and the outlet pipe 8 can be manufactured as a single piece or in two parts.

[0085] After Figure 8b The adapter flush pipe 2, to which the suction pipe 4 with the expansion 4a is mounted, is inserted into the flush pipe 23. Here, too, the opening 2a in the adapter flush pipe 2 is preferably located at the upper circumference. The adapter flush pipe 2 with the suction pipe 4 can be manufactured as a single piece or in two parts. It is also possible to mount or combine the flush pipe 23, which is designed as a plastic pipe and is usually newly installed when the toilet bowl 20 is mounted, with the suction pipe 4. Then the flush pipe 22 with the suction pipe 4 can be manufactured as a single piece or in two parts. By rotating the adapter waste pipe 9 with the discharge pipe 8, the compensating element 7 and the housing 5, and by rotating the adapter flush pipe 2 with the suction pipe 4, the expansion 4a of the suction pipe 4 is adapted to the housing 5 and connected to each other. Fig. 8cThe sealing compensating element 7 is designed to compensate for a small radial and axial distance, as well as an angular offset and component tolerances between the housing 5 and the expansion 4a.

[0086] In Figure 8d and 8eThe actuating element 30 is attached to the fully assembled suction module 1, on which the connection element 32 is located, and connected or locked into place. The first and second contact elements 33, 34 connect to each other and can be moved in the guide 36 to actuate the valve flap 3. The suction module 1 is now assembled, and the toilet bowl 20 can be placed on the mounting elements 27, and the seals 25, 26 can be inserted into the corresponding openings of the ceramic cavity 21. Only the flattened portion 39 of the actuating element 30 is wedged between the toilet bowl 20 and the tile surface 24. Except for the lever 31 with the USB connector 41, the joint 3a of the valve flap 3, and the pipe connections, all other components of the suction module 1 and the actuating element 30 can be positioned in the ceramic cavity 21.

[0087] An associated power source for operating the at least one fan 6 can be pre-installed as a separate component in the ceramic cavity 21 and attached or glued to the rear wall, for example. The electrical connection between the battery and the extraction module can be made via the control unit 40 using a cable. The battery can be charged, for example, inductively or via a cable using the USB port 41. The extraction module 1 can be activated by a sensor installed on or in the toilet bowl 20, which triggers a signal upon pressure, light, touch, or movement initiated by a toilet user. Even if the user is still using the toilet and flushes, the valve flap 3 is pivoted into the closed position by the water flow, thus interrupting the extraction of the odorous air L for the shortest possible time.

[0088] The extraction module is therefore very easy to assemble, as it can be manufactured from two to three components with elastic length and angle compensation. The first component can be the adapter flushing pipe 2 with the suction pipe 4 and the integrated valve flap 3. The connection element 32 is also located on the suction pipe 4. The second component can be the suction device, shown here as housing 5 with the fan 6, and the compensation element 7 with the discharge pipe 8. This allows for assembly according to the assembly steps of the Figures 8a to 8e Simply mount the extraction module. The third component is the actuating element 30, which is connected to or can be plugged into the connection element 32. Alternatively, the first and second components can be combined into one.

[0089] Figure 9Figure 1 shows a suction module 1 with two suction pipes 4 extending from the opening 2a of the adapter flushing pipe 2 to two housings 5. From each of the two housings 5 ​​shown, a discharge pipe 8 extends into the opening 9a of the adapter wastewater pipe 9. The suction pipes 4 are arranged symmetrically to the adapter flushing pipe 2, and each suction pipe 4 has a flared section 4a that opens into a housing 5. This arrangement with two suction pipes 4 also has the advantage that the suction module can be built flat and thus be used in very small ceramic cavities 21 with a maximum depth of 15 mm. The cross-section of the individual suction pipes can be smaller than in the embodiments shown in Figure 2. Figures 1 to 8Smaller fans 6 can also be used, which together can draw the air out of the toilet bowl 20. In this illustration, the fans 6 are arranged in parallel. They can also be arranged in series. An asymmetrical arrangement of the suction pipes 4, with or without different cross-sections, can also be possible and advantageous in order to compensate for flow effects from the cistern 28. The illustration is not limited to two suction pipes 4, each with a fan 6 and an exhaust pipe 8. Combinations are also conceivable in which several suction pipes 4 with small cross-sections work together with a single fan 6. Likewise, one suction pipe 4 can work together with two fans 6 arranged one behind the other.

[0090] Figure 10Figure 1 shows another representation of a toilet bowl 20 with a control module 50, which is arranged on the rear edge of the toilet bowl 20, resting against the tile surface 24. A connecting element 32 with a push / pull element 42 is arranged between the tile surface 24 and the toilet bowl 20. The push / pull element 42 is freely movable along its longitudinal axis and is configured to open or close the valve flap 3. The control module 50 is configured to activate the extraction module 1, i.e., to switch the fan 6 on or off and to open or close the valve flap 3. Typically, a wall-hung toilet is not mounted directly against the tile, but is separated from it by a sound-insulating mat. This mat is compressed from approximately 4 mm to approximately 1 mm in a selected area.

[0091] A manually or automatically triggerable control module 50 is installed in the Figures 11a to 12The control module 50 is designed to be plugged onto or connected to a connection element 32. Preferably, the connection element 32 can have a guide (not further specified) and a detachable fastening located on the suction pipe 4. A bridge 32a divides the connection element 32 into a lower part, which is partially located behind the toilet bowl 20 or in the ceramic cavity 21. An upper part of the connection element 32 is inserted into the control module 50. The control module 50 can contain a battery or a power supply for the fan 6. A display 52 can indicate the battery voltage status using LEDs. A push button 51 can be configured to activate the extraction module 1, so that the fan 6 is running and the valve flap 6, in the open position, allows the extraction of the odorous air.As an alternative to button 51, a sensor can be arranged which detects the occupancy of the toilet bowl 20 and activates the suction module 1.

[0092] A first contact element 33 of the connection element 32, which can be designed as a magnetic sliding piece, has a connection on one side associated with the extraction module 1 to the pull / push element 42, which can be used to move the valve flap 3 into the open or closed position. When the connection element 32 is plugged into the control module 50, a connection to an actuator 53 is established by connecting the first contact element 33 to a terminal of the actuator 53 via a second contact element 34. In this embodiment, the connection is made magnetically, although alternatives are possible. The first and second contact elements 33, 34 are arranged within a guide 36. When the valve flap 3 opens and closes, both the pull / push element 42 and the first contact element 33 move within the guide 36 and thus within the connection element 32 or within the control module 50.Inside the guide 36 a switch 37 is arranged, with which the position of the valve flap 3 can be detected.

[0093] Without actuation of the actuator 53, the first contact element 33 can move up and down along the guide 36, triggered by the valve flap 3. Without a flushing operation, the valve flap 3 is in an open position due to its own weight, allowing the extraction of odor-laden air. The first contact element 33 is then pulled into a lower position within the guide 36 by the push-pull element 42. During a flushing operation, the valve flap 3 is closed by the water flow. The first contact element 33 is then pushed into an upper position by the push-pull element 42. The control unit 40, activated by the switch 37, switches off the fan 6.

[0094] The control unit 40 within the control module 50 is designed to control the actuator 53 to open or close the valve flap 3. This also allows the fan 6 to be switched on or off.

[0095] The control unit 40 can be configured to control and vary the power output of the fan 6. Using a wireless connection, for example via Bluetooth or Wi-Fi, to a home automation system, a smartphone, or an app, the extraction module can be controlled, programmed, and integrated into daily operations via the control unit 40. The control module 50 can, for example, have inputs for supplying power to the extraction module or its own rechargeable battery that can be charged via a USB or power outlet. A battery management system or a voltage converter can also be part of the control module 50, allowing the extraction module 1 to be powered by a standard power supply, a solar panel, the rechargeable battery, or a power bank.

[0096] The fan 6 receives its power supply from the control module 50 via the connection element 32. The control module 50 is designed to be disconnected from the connection element 32, which is fixedly located between the toilet bowl 20 and the tile surface 24. This disconnects a plug connection between the connection element 32 and the control module 50 and releases the magnetic contact between the contact element 33 and the actuator 53. This allows the control module 50's battery to be charged externally or the control unit 40 to be reprogrammed. In this case, the first contact element 33 engages in an upward position (not shown), keeping the valve flap 3 closed. Similarly, in the event of a power failure due to a discharged battery, the first contact element 33 engages in an upward position, keeping the valve flap 3 closed.The guide for the tension / compression element 42 also takes place at the connecting element 32.

[0097] The valve flap 3 can be opened or closed simultaneously or with a time delay by means of an actuator 53, by the actuator 53 releasing or tightening the pull / push element 42. The described switch 37 for detecting the open and closed position of the valve flap 3 is also designed to send its signals to the control unit 40 for controlling the fan 6.

[0098] The valve flap 3 thus has three functional positions. In its first, freely functioning position, the valve flap 3 pivots hydraulically and mechanically between an open and closed position in the flush pipe 23 or adapter flush pipe 2. When the toilet is flushed, the valve flap pivots into the closed position, thus preventing the extraction of odorous air. If no water flows through the flush pipe 23, the valve flap 3 pivots into an open position by its own weight, allowing the fan 6 to extract the odorous air. Simultaneously, the connection to the cistern is almost completely sealed. The fan 6 can be switched on or off via a sensor.

[0099] In a second operating position, the valve flap 3 is moved manually or by actuator into the closed position, thus preventing the extraction of odorous air. At the same time, the fan 6 is deactivated.

[0100] In a third operating position, the valve flap 3 is moved manually or by actuator into the open position, thus enabling the extraction of odor-laden air. At the same time, the connection to the cistern is almost completely sealed and the fan 6 is activated.

[0101] The flap has a free, unobstructed swivel range and is connected via a coupling to an actuator (or lever) which ensures that the free swivel range is restricted, if necessary, by movable stops so that the flap can be moved in two switching positions.

[0102] The actuator (or manual lever) allows 3 switching positions via 3 positions: 1. Top flap 2. Freely pivoting flap 3. Bottom flap

[0103] For this purpose, the pivoting movement of the valve flap is first converted into a linear movement, which can be achieved via a pull element 35 or a pull / push element 42. The movement of the pull element 38 or pull / push element 42 is guided out of the ceramic through a gap and transmitted directly or indirectly to a lever 31 or to a first contact element 33 within a guide 36. This first contact element 33 moves within a guide 36 and can couple or connect with a second contact element 34. Stops are arranged within the guide 36 between which the first contact element can move freely, so that the valve flap 3 can pivot freely between an open and closed position. The second contact element 34 can be moved actuator-wise or manually and thus forms the movable stops for the first contact element 33.The first contact element 33 corresponds to a switch 37 or sensor, which enables position detection for the valve flap 3.

[0104] According to the invention, air L is extracted from the toilet bowl 20 by means of the suction module 1 via the flushing pipe 23 or the adapter flushing pipe 2 and introduced into the wastewater pipe 22 or the adapter wastewater pipe 9.

[0105] Advantageously, the openings 2a and 9a in the adapter for flushing pipe 2 and wastewater pipe 9 are located in the upper circumferential area of ​​the adapter for wastewater pipe 9. The upper circumferential area is defined as the upper half of the pipes or adapters of flushing pipe 23, 2 and wastewater pipe 22, 9. This prevents flowing or standing water from entering the suction pipe 4 or discharge pipe 8, thus avoiding a loss of performance.

[0106] The spiral shape of the suction pipe 4 allows for a space-saving connection of the two openings 2a, 9a, enabling the extraction module 1 to be retrofitted even into very narrow ceramic cavities 21. Preferably, the at least one suction pipe 4 has a widening 4a that increases its cross-section to that of the suction device or its housing 5. The widening 4a of the cross-sections of the suction pipe 4 upstream of the at least one fan 6 and of the discharge pipe 8 downstream of the at least one fan 6, which projects into the ceramic cavity 21, also ensures optimal airflow to and from the at least one fan 6, allowing it to operate more efficiently and quietly.Because the widening 4a of the cross-sections of the suction pipe 4 and the discharge pipe 8 only extends into the ceramic cavity 21, subsequent installation of the suction module 1 is possible for ceramic cavities that are very narrow in depth.

[0107] Preferably, an elastic compensating element 7 is arranged between the at least one discharge tube 8 and the associated housing 5. The use of a sealing compensating element 7 between the housing 5 and the discharge tube 8 enables radial and axial compensation during the assembly of the extraction module 1. The compensating element 7 can also be arranged between the suction tube 4 and the discharge tube 8 if the suction device is flanged laterally to one of the two tubes.

[0108] The valve flap 3 arranged in the adapter flushing pipe 2 can, in an open position, release the opening 2a of the adapter flushing pipe 2, or, in a closed position, close the opening 2a. With its outer contour, the valve flap 3 is preferably designed to seal the adapter flushing pipe 2 or the flushing pipe 23 to the water tank (not shown) almost airtight during the extraction of the odor-laden air L.

[0109] Preferably, the adapter flushing pipe (2) or the flushing pipe (23) has sealing lips (2c) which, when the valve flap (3) is in the open position, interact on both sides with the outer edges of the underside (3b) of the valve flap (3). Preferably, the valve flap (3) can be pivotally arranged in the adapter flushing pipe (2) by means of a pivot point or joint 3a. Alternatively, the valve flap (3) can also be designed as a diaphragm that interacts with the opening 2a between a closed and an open position. The valve flap (3) has a flow-optimized contour designed to pivot into the closed position when the water flush is triggered. The dynamic pressure of the air moving in front of the flushing water (S) and the dynamic pressure of the flushing water (S) create a pressure difference in front of and behind the valve flap (3), which causes it to pivot into the closed position.This is enhanced by the buoyancy of the hollow valve flap 3 or by various fluid-hydraulic flow elements 3f, such as a rudder, hydrofoil, or spoiler. As long as the flushing water S flows, the closed position is maintained. As the water level in the flushing pipe 23 or adapter flushing pipe 2 falls, the valve flap 3 can lower continuously due to gravity, thus reopening the path for suction through the suction module 1. This hydrodynamic-mechanical process for pivoting the valve flap 3 into the open or closed position can be assisted manually or by actuators, which can be useful if demand-based operation is desired, allowing the suction module to be operated for a predetermined time. The open and closed positions are required for battery operation.

[0110] Preferably, the adapter flushing pipe 2 or the flushing pipe 23 has a guide element 2d in the direction of flow of the flushing water S upstream of the joint 3a, which is designed to direct the flushing water S to the back of the valve flap 3, which is located below the joint 3a of the valve flap 3.

[0111] Preferably a sealing element 3e can be arranged on the upper side 3c of the valve flap 3, which is designed to close the opening 2a.

[0112] Preferably, the underside 3b of the valve flap 3 can have a flow element 3f in the form of a web or a double web. Reference sign

[0113] 1 Suction module 2 Adapter flushing pipe 2a Opening 2b Stop 2c Sealing lips 2d Guide element 3 Valve flap 3a Joint 3b Bottom 3c Top 3d Front 3e Sealing element 3f Flow element 4 Suction pipe 4a Expansion 5 Housing 6 Fan 7 Compensating element 8 Exhaust pipe 9 Adapter drain pipe 9a Opening 20Toilet bowl 21Ceramic cavity 22Waste pipe 23Flush pipe 24Tile backsplash / wall 25Waste pipe seal 26Flush pipe seal 27Mounting element 28Cigarette 29Cover box 30 Actuating element 31 Lever 32 Connection element 32a Bridge 33 First contact element 34 Second contact element 35 First pull element 36 Guide 37 Switch 38 Second pull element 39 Flattened section 40 Control 41 USB port 42 Pull / push element 50 Control module 51 Button 52 Display 53 Actuator BWidth SRinse water LAir

Claims

1. Suction module (1) for extracting air (L) from a toilet bowl (20) which is connected to a flush pipe (23) with a water supply and to a wastewater pipe (22) for wastewater disposal, wherein the air (L) is extracted via at least one opening (2a) and discharged into at least one opening (9a) of the wastewater pipe (22) or adapter wastewater pipe (9), comprising at least one suction pipe (4), at least one suction device and at least one discharge pipe (8) to which the two openings (2a, 9a) are connected, wherein, when a flush is activated to clean the toilet bowl (20), a closure is formed in the flush pipe (23) or adapter flush pipe (2) to close the opening (2a) of the flush pipe (23) or the adapter flush pipe (2). characterized by the fact thatthe at least one suction device connects the at least one suction pipe (4) with the at least one discharge pipe (8) or is arranged laterally on the suction pipe (4) or the discharge pipe (8), and that the suction module (1) is designed to be fully installed in the ceramic cavity (21) of the toilet bowl (20).

2. Extraction module (1) according to claim 1, characterized by the fact that the at least one suction pipe (4) extends at least partially in a spiral shape around the flushing pipe (23) or the adapter flushing pipe (2).

3. Extraction module (1) according to claim 2, characterized by the fact that the at least one suction tube (4) has an expansion (4a) towards the suction device or its housing (5), wherein the expansion (4a) extends into the cross-section of the ceramic cavity (21).

4. Extraction module (1) according to one of the preceding claims, characterized by the fact thatThe suction pipe (4) in the upper area, where it at least partially rests on the flushing pipe (23) or adapter flushing pipe (2), has a maximum width of 15mm.

5. Extraction module (1) according to claim 1, characterized by the fact that the closure is designed as two valves or as a pivotable valve flap (3) which are designed to selectively open or close the flushing pipe (23) or the adapter flushing pipe (2) and the suction pipe (4).

6. Suction module (1) for extracting air (L) from a toilet bowl (20) which is connected to a flushing pipe (23) with a water supply and to a wastewater pipe (22) for the disposal of wastewater, wherein the extraction of the air (L) by the suction module (1) takes place via at least one opening (2a) and is directed into at least one opening (9a) of the wastewater pipe (22) or adapter wastewater pipe (9), characterized by a valve flap (3) arranged in the flushing pipe (23) or adapter flushing pipe (2), which is designed to close the opening (2a) of the flushing pipe (23) or adapter flushing pipe (2) with a top (3c) when the water supply is activated and to release the opening (2a) of the flushing pipe (23) or adapter flushing pipe (2).

7. Extraction module (1) according to claim 6, characterized by the fact that the valve flap (3) is designed with a bottom side (3b) to seal the flush pipe (23) or the flush pipe adapter (2) to the cistern (28).

8. Extraction module (1) according to claim 6, characterized by the fact that the valve flap (3) is designed to pivot between an open position and a closed position for the opening (2a) of the flushing pipe (23) or the adapter flushing pipe (2), wherein the pivot point for pivoting in the direction of flow of the flushing water (S) is located in front of the opening (2a) of the adapter flushing pipe (2).

9. Extraction module (1) according to claim 6, characterized by the fact that a manual or automatic actuating element (30) or control module (50) is designed to move the valve flap (3) from an open position to a closed position or from a closed position to an open position.

10. Extraction module (1) according to claim 9, characterized by the fact that the actuating element (30) or control module (50) is designed to switch at least one suction device on or off.

11. Extraction module (1) according to claim 9, characterized by the fact thatA connection element (32) is arranged between the control module (50) and the extraction module (1), the connection element (32) having means designed to move and hold the valve flap (3) in the closed position in the event of disassembly or failure of the control or control module (50).

12. Extraction module (1) according to claim 9, characterized by the fact that the manual or automatic actuating element (30) or control module (50) is connected directly or indirectly to the valve flap (3) by means of a pull element (35, 38) or a pull / push element (42).

13. Extraction module (1) according to claim 6, characterized by the fact that the front (3d) of the valve flap (3) has a convex shape on its underside (2b), the radius of which in the open position corresponds to the inner radius of the adapter flushing tube (2) or the flushing tube (23).

14. Extraction module (1) according to claim 6, characterized by the fact thatthe adapter flushing pipe (2) or the flushing pipe (23) has a stop (2b) on the inner top side behind the opening (2a) in the direction of flow of the flushing water (S), which interacts with the front part of the top side (3c) of the valve flap (3).

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