FLOOR DRAIN WITH HEIGHT-ADJUSTABLE ODOR TRAP

Description

[0001] The invention relates to a drainage device for producing a water drain embedded in a floor, in particular for producing a floor-level shower, with a housing which defines a cavity, an odor trap arranged in the cavity for receiving sealing water and a connecting pipe piece connected to the odor trap for connecting a drainage pipe.

[0002] Such a drainage device is known from EP 1 785 534 B1.

[0003] To prevent foul-smelling gases from a wastewater pipe from entering a building through a drainage device at a drainage point, drainage devices installed in a building are generally equipped with an odor trap. The odor trap is usually designed as a liquid-based system, with a certain volume of sealing water within a section of the odor trap preventing gases from flowing through. To form a section filled with sealing water, the odor trap has, for example, at least a first, lower deflection area and a second, higher deflection area following in the direction of flow, in which the wastewater flowing through the odor trap is deflected. The second deflection area can also be designed as an overflow edge.If no more wastewater flows through the odor trap, the special design ensures that a certain amount of sealing water remains in the area from the first diversion area to the second diversion area. The portion of the sealing water column that prevents the passage of gases from a wastewater line is referred to as the effective sealing water head. The sealing water head is the vertical distance between the sealing water level in the area of ​​the second diversion area and a diversion edge or lowest point of an upper section of the first diversion area. The height of the sealing water level defined by the sealing water results from the vertical position of an overflow edge arranged in the area of ​​the second diversion area.

[0004] To ensure high functional reliability of such an odor trap, also with regard to the gradual evaporation of the sealing water during extended periods of non-use at the drainage point, a certain minimum sealing water height is advantageous. Where possible, the sealing water surface facing the building interior should be as small as possible to reduce evaporation effects. These requirements can be met for most drainage devices with a minimum sealing water height of approximately 50 mm.

[0005] However, the water seal height influences the drainage capacity of the drainage device, which is defined as the volume of wastewater that can pass through the drainage device in a given period of time. In general, as the water seal height increases, the flow resistance created by the odor trap of the drainage device increases, reducing the drainage capacity. As a result, accumulating wastewater may not be able to be drained away quickly enough. Therefore, drainage capacity is an important parameter when selecting the right drainage device. This is particularly true for drainage devices for floor-level showers, where the wastewater retention height is usually reduced to improve drainage capacity. The retention height is the height of the hydraulically effective water column.This height is determined by the vertical distance between the water seal and the wastewater level defined by the wastewater and located above the drain. For floor-level showers, this distance corresponds only to the vertical distance between the water seal and the highest point of the drain's inlet opening.

[0006] When designing or selecting a suitable drainage device, there is therefore a conflict of objectives between a sufficiently high seal water head and a high drainage capacity. Therefore, the desired seal water head and the required drainage capacity should be known when selecting the drainage device. In practice, however, it is often the case that both parameters have to be adapted to the on-site conditions. In the current state of the art, this adaptation is often achieved through mechanical processing or the targeted selection of components of the drainage device. However, if conditions change, for example if a significantly higher drainage capacity is subsequently required, the adjustments made can no longer be reversed or can only be reversed with considerable effort.

[0007] CN 108560686 A discloses a floor drain with an automated odor trap. The floor drain comprises a floor drain body, two grate plates connected to the top and an inner wall of the floor drain body, respectively, a dip pipe connected to a bottom of the floor drain body, a cup-shaped vessel into which the dip pipe extends from above, and an electrically adjustable telescopic rod, the upper end of which is connected to the left side of the bottom of the floor drain body and the lower end of which is connected to the cup-shaped vessel. The telescopic rod is connected via a cable to a battery-operated control unit located in a box. By electrically extending or shortening the telescopic rod, the water seal height and the drainage capacity of the odor trap composed of the cup-shaped vessel and the dip pipe can be varied.

[0008] EP3235962 A1 also discloses a drainage device with an odor trap.

[0009] Based on this, the invention is based on the object of creating a drainage device of the type mentioned at the beginning, the sealing water height and drainage capacity of which can be better adapted to the local conditions.

[0010] This object is achieved by a drainage device having the features specified in claim 1. Advantageous embodiments of the drainage device according to the invention are specified in the subclaims.

[0011] The drainage device according to the invention is characterized in that its odor trap has at least one adjustable line section which is designed to be flexible and / or is formed from at least one flexibly deformable line section, and in that the odor trap is designed to be adjustable in such a way that the height of the sealing water level defined by the sealing water can be varied, wherein an adjusting device is arranged within the housing for adjusting the height of the sealing water level, wherein the adjusting device has at least one adjusting body for adjusting the height of the sealing water level, wherein the adjusting body can be raised and lowered or rotated or deformed, and wherein the adjusting device has at least one bearing element for supporting the adjusting body, wherein the bearing element is connected to at least one housing section of the housing.

[0012] The invention is based on the idea that the water seal height and the drainage capacity of the drainage device can be adapted to the local conditions by changing the water seal level defined by the water seal. If a high water seal height is required, for example if the drainage device is to be installed in a warm country, the odor trap can be adjusted so that the water seal level is relatively high, resulting in a relatively high water seal height. If, on the other hand, a high drainage capacity of the drainage device is required, the odor trap can be adjusted so that the water seal level is relatively low, resulting in a relatively low water seal height. For this purpose, the odor trap is arranged in the cavity of the housing so that it can be raised and lowered or tilted, for example.

[0013] According to the invention, the adjusting device designed to adjust the height of the water seal is arranged within the housing. The adjusting device can be part of the odor trap, or the odor trap can be configured as an adjusting device in sections.

[0014] For example, the odor trap is designed in a wave- or S-shape and is arranged entirely within the housing. It is connected to an inlet opening opening into an upper housing section and to a connecting pipe section that penetrates a side region of a lower housing part. The section of the odor trap comprising the second deflection region can also be designed as an adjusting device or variable drain line section, such that the section can be rotated about an axis of rotation, wherein a first central axis of an inlet to this section and a second central axis of an outlet from this section coincide with the axis of rotation, wherein the axis of rotation is oriented substantially horizontally and / or parallel to the main flow direction.Accordingly, the rotation of the section changes the vertical position of the overflow area formed in the second deflection area, which is designed, for example, as an overflow edge, and consequently the height of the water seal. Advantageously, the height of the water seal can thus be adjusted without mechanical processing or replacing components of the odor trap.

[0015] The housing of the drainage device according to the invention can, for example, be composed of a pot- or box-like lower housing part and a lid-like upper housing part. The lower housing part can comprise a lower housing section, while the upper housing part comprises the upper housing section. The lower housing part is preferably provided with fastening elements, for example with perforated tabs, which serve to fix the lower housing part to a subfloor by means of fastening screws or the like. According to a further embodiment of the drainage device according to the invention, a plurality of circumferential grooves running parallel to one another can be formed on the outer side of the lower housing part, below its upper edge. These grooves serve as guides for a cutting tool in the event of a necessary reduction in the height of the lower housing part.The lid-like upper housing part preferably has a web which surrounds the upper edge of the lower housing part and is designed, for example, as a circumferential web along the circumference of the upper housing part.

[0016] The positioning of the adjusting device within the housing allows for unimpeded movement of the adjusting device, even when the housing has been installed in a floor (screed). This allows the water seal height to be adjusted at any time, even after the drain device has been installed and used, as the movement of the adjusting device required to adjust the odor trap is ensured by the housing's cavity. This is possible, for example, if a larger wastewater volume flow needs to be diverted after the renovation of a sanitary room with the drain device installed in the floor.

[0017] In an advantageous embodiment of the drainage device, the adjusting device is provided with a mechanical or motor drive, which is preferably also arranged within the housing. Provision is made for the drive, which is preferably designed as an electric motor or solenoid, to be configured to actuate the adjusting device. If the mechanical or motor drive is used together with the wave-shaped or S-shaped odor trap described above, toothed elements are formed, for example, on an outer side of the rotatable section of the odor trap, into which toothed elements a gearwheel connected to a shaft of the drive, preferably an electric motor, engages, so that the drive can rotate the section to adjust the height of the sealing water level.Advantageously, the electric motor or lifting magnet is arranged within the housing and can be operated, for example, by remote control, in order to enable operation of the actuating device without the need to provide access to the actuating device for a user. It is also within the scope of the invention that the motor drive can be connected by signal technology to an electrically controlled valve unit, for example an electrically controlled mixer tap in a shower. If the electrically controlled mixer tap receives an actuating signal to provide a large volume of fresh water, this actuating signal can be forwarded to the motor drive, which then reduces the height of the sealing water level in order to provide a sufficiently high drainage capacity for the duration of the large volume of fresh water flow, which is fed as wastewater to the drainage device.

[0018] According to the invention, the odor trap has at least one adjustable line section, wherein this line section is preferably arranged between the first and the second deflection region. Such an adjustable line section is understood, for example, to be a line segment whose spatial extent can be changed in the flow direction of the wastewater. A line section that is longer in the flow direction increases the distance between the lower deflection edge and the higher overflow edge in order to enable a higher vertical position of the overflow edge, thus resulting in a greater height of the sealing water level. A line section that is shorter in the flow direction, on the other hand, leads to a lower height of the sealing water level. To adjust the line section, it is, for example, displaceable, preferably designed like a telescope.Alternatively, but not according to the invention, the at least one adjustable line section can also be designed to be rotatable, for example in the manner of a joint.

[0019] It is also conceivable for the odor trap of the drainage device according to the invention to comprise several adjustable pipe sections. For example, a first adjustable pipe section can be arranged between the first deflection area and the second deflection area, and a second adjustable pipe section can be arranged between the second deflection area and the connecting pipe section.

[0020] In a first variant of the invention, the adjustable line section of the drainage device according to the invention is designed to be flexible, particularly in the form of a flexible hose. This design simplifies the implementation of the variably adjustable odor trap and offers cost advantages over other designs of the variably adjustable odor trap.

[0021] The characteristic "flexible" here refers to the property of a body to change its shape as a result of the application of a force. Thus, in this case, due to the flexibility of the at least one adjustable line section, the length of this line section can be changed in the direction of flow, in particular lengthened and / or shortened.

[0022] In a second variant of the invention, the at least one adjustable line section is formed from at least one flexibly deformable line section and optionally also from at least one dimensionally stable line section. For example, one embodiment of the present invention provides that the line section forming the first deflection region, which is preferably attached to a lower housing section with a bracket to fix the odor trap within the housing, is dimensionally stable, while the line section encompassing the second deflection region, which fluidically connects the dimensionally stable line section to the connecting pipe section, is flexible.For example, it can be prevented that when the second deflection area is raised for the purpose of adjusting the height of the odor trap, the first deflection area is kinked in the area of ​​the fixation, which would lead to an undesirable narrowing and thus to an increased flow resistance and a correspondingly reduced drainage capacity of the drainage device.

[0023] According to the invention, the adjusting device has at least one adjusting body for adjusting the height of the water seal level, which can be raised and lowered or rotated or deformed. The adjusting body is preferably in contact with a section of the odor trap, in particular with a section of the flexible pipe section, in at least one contact area, so that the height of the water seal level can be varied by means of the adjusting body. For example, when the adjusting body is raised, rotated, or expanded, the odor trap is raised at least in sections, so that the vertical position of the second deflection area is changed such that the vertical distance between the lower deflection edge and the higher overflow area or overflow edge increases. Accordingly, lowering, rotating in the opposite direction, or reducing the size of the adjusting body leads to a decrease in the vertical distance.The adjusting body can be designed, for example, as a piston-like body which is arranged on an end of a vertically aligned threaded rod arranged in the housing, said end facing the odor trap, wherein a rotation of the threaded rod in a first direction of rotation causes the adjusting body to be raised and a rotation of the threaded rod in a direction of rotation opposite to the first direction of rotation causes the adjusting body to be lowered.

[0024] It is also within the scope of the invention that the actuating body can be designed to be deformable in the manner of a so-called lifting cushion. A lifting cushion is understood to be a flexible casing that can be filled with a gas, in particular air, and is made, for example, of a rubber-elastic material. Filling the lifting cushion with gas causes it to expand, which can be used to lift the odor trap in sections. If the gas is released from the lifting cushion, the volume of the lifting cushion decreases, and the odor trap returns to a lowered position.

[0025] The use of an adjusting device with an adjusting body offers the advantage that the trap or a section thereof, especially the flexible pipe section, can be raised or lowered to adjust the height of the water seal, so that the trap or a section of the trap only needs to be moved along a substantially straight path. The housing can thus be designed relatively narrow. Furthermore, the sealing elements required for a rotatable pipe section can be omitted or replaced with simpler sealing elements that do not allow rotation of the pipe section but offer improved sealing.

[0026] In a further embodiment of the drainage device according to the invention, the adjusting body is arranged between the odor trap and the lower housing section and / or between the odor trap and the lower housing section of the housing. For example, if the adjusting body is designed to be raised and lowered and is arranged at the end of the rotatable threaded rod, it is advantageously arranged between the odor trap and the lower housing section so that when the adjusting body is raised or lowered, the odor trap is raised or lowered at least in sections, whereby the selected arrangement of the adjusting body ensures that the movement of the odor trap is directly proportional to the movement of the adjusting body. This simple relationship facilitates the design of the adjusting device in that the adjustment range of the adjusting device corresponds to the adjustment range of the vertical distance between the deflection edge and the overflow edge.Furthermore, this arrangement means that the force transmitted to the odor trap by the actuating body is essentially transmitted to the odor trap in only one direction.

[0027] According to the invention, the adjusting device for supporting the adjusting body preferably has at least one bearing element which is connected to at least one housing section of the housing. The bearing element can be formed from one or more elements. For example, it is conceivable that, to form the bearing element, two column- or cuboid-shaped extensions are formed on the lower housing section. These extensions extend essentially vertically and have radial bearing elements at their ends facing away from the lower housing section, which are designed to receive axial or shaft-shaped extensions. The bearing element can also be formed from a bearing in which, for example, a threaded rod can be rotatably mounted, wherein the bearing element is preferably arranged on the lower housing section and enables a vertical alignment of the threaded rod.The bearing element makes it possible for the actuating device or its actuating body to be mounted at least indirectly in the housing, so that the actuating device or the actuating body remains in a predetermined position within the housing.

[0028] In a further embodiment of the drainage device, the adjusting body is rotatably mounted in the bearing element and is eccentrically designed and / or mounted eccentrically rotatably in the bearing element. Accordingly, the height of the sealing water level can be adjusted by rotating the adjusting body. For example, the adjusting body is in contact with the flexible pipe section of the odor trap with a section of its outer surface, whereby the force transmitted from the adjusting body to the pipe section is distributed over a large area and the risk of an unintentional cross-sectional taper or the formation of kinks is reduced. Due to the eccentricity of the adjusting body or the eccentrically rotatable bearing, the rotation of the adjusting body is converted into a lifting or lowering movement of the section of the odor trap that is in contact with the adjusting body.

[0029] According to a further embodiment, the eccentrically rotatably mounted actuator is designed eccentrically or rotationally symmetrically. Using an eccentrically designed actuator, the lifting or lowering movement of the odor trap resulting from the rotation of the actuator can be very effectively influenced. For example, the actuator can be designed cam-like, so that the amplitude of the lifting movement increases with increasing rotation angle.

[0030] In a further embodiment of the drainage device, the adjusting device has an energy storage element designed to influence the adjusting body, for example, the spatial position of the adjusting body. Using the energy storage element, the adjusting body can be influenced such that it returns to its original position after a defined event. This embodiment offers, for example, a mode of operation in which the height of the sealing water level is automatically adjusted to the required drainage capacity. The weight of the wastewater flowing through the trap acts on the at least one adjustable pipe section of the trap in such a way that it is lowered, thus temporarily reducing the height of the sealing water level.This is the case when the distance between the lower and upper deflectors of the odor trap is reduced, thereby reducing flow resistance and consequently increasing the drainage capacity of the drainage device. After showering, the wastewater flow rate decreases, meaning less water and a correspondingly lower weight force acts on the odor trap. If the weight force is smaller than the restoring force provided by the energy storage element, the odor trap is moved back to its original position by the energy storage element, so that a maximum water seal height can be achieved again. A spring or gas pressure element, for example, is used as the energy storage element.

[0031] Furthermore, the housing can comprise an inspection or access opening, which is preferably arranged in the upper housing section. The inspection or access opening can be used to adjust the height of the sealing water level. For example, it is possible for the position of the adjusting body to be changed by a user of the drainage device by reaching through the inspection opening and manually raising, lowering or rotating the adjusting body. However, it is also within the scope of the invention for the adjusting body to be arranged, for example, on a threaded rod in such a way that rotation of the threaded rod causes an upward or downward movement of the adjusting body. The threaded rod can be provided with a driving profile, for example an external or internal hexagon, on the end face facing the access opening, which is accessible through the access opening with an appropriate tool.

[0032] In a further embodiment of the drainage device according to the invention, an operating element for actuating the adjusting device or the mechanical or motorized drive is arranged in the area of ​​the inspection or access opening, preferably below the inspection or access opening. The operating element enables the actuation of the adjusting device without the device itself having to be accessible to the user. The operating element can be designed as a slider, button, rotary knob, or the like. For example, the connection between the operating element and the motorized drive provided for transmitting the user's desired setting is a radio-technology-based signaling connection, for the establishment of which the motorized drive and the operating element comprise components of a transmitter-receiver device. The operating element enables tool-free adjustment of the height of the sealing water level.

[0033] In an alternative embodiment, a force transmission element, preferably a cable or Bowden cable, can be arranged to provide the operative connection between the operating element and the actuating device or between the operating element and the drive. This allows the operating element to be positioned away from the actuating body or the drive. For example, if the operating element is connected to the actuating body by a Bowden cable and the bearing element is arranged in an upper housing section, a movement of the operating element is transmitted via the Bowden cable to the actuating body, which is then raised, increasing the length of the adjustable power section of the odor trap, thereby adjusting the position of the overflow area or the overflow edge and thus the height of the water seal.

[0034] Using a cable or Bowden cable eliminates the need for complex signaling connections, particularly the electronic components of a transmitter-receiver device, thus simplifying the production of the drain device and making it relatively cost-effective. It is also not necessary to provide an electrical power supply for the drain device if the actuating device is operated manually exclusively using the cable or Bowden cable.

[0035] In a further embodiment of the drain device, a lever and / or a gear is / are arranged within the housing to provide an operative connection between the operating element and the actuating device or between the operating element and the drive. The lever or gear enables easy actuation or adjustment of the actuating body or switching the motor drive on and off. In particular, the force required to adjust the actuating body can be reduced by means of a gear ratio, and the self-locking of the gear can be used, for example, to fix the actuating body in a desired position.

[0036] In a preferred embodiment of the drain device, a display means is arranged in and / or on the housing and is designed to display the height of the water seal and / or a variable related to the height of the water seal. The set height of the water seal cannot normally be seen when the drain device is installed, so that a user cannot determine whether the desired height has been set after actuating / adjusting the adjusting device. Therefore, a display unit is preferably arranged in an area of ​​the housing that is visible when installed. This display unit either directly displays the height of the water seal or indirectly displays a variable related to it, for example a length of the adjustable pipe section, the position of the upper part of the odor trap, or the position of the adjusting body of the adjusting device.

[0037] An advantageous embodiment of the drainage device according to the invention is characterized in that the drainage device is designed such that a vertical position of an overflow area of ​​the odor trap, adjusted by means of the adjusting device, remains constant or fixed after the end of an actuation of the adjusting device until the next actuation of the adjusting device. This embodiment is based on the consideration that after adjusting the water seal height or the drainage capacity of the drainage device by adjusting the height of the water seal level defined by the water seal to the local conditions by means of the adjusting device, a new adjustment, i.e. a change in the water seal height, is generally or usually not necessary.With regard to low energy consumption and a long service life of the drainage device, it is advantageous if the vertical position of an overflow area of ​​the odor trap, adjusted using the adjusting device, remains constant or fixed after the actuation of the adjusting device until the next actuation. However, should the conditions at the installation site of the drainage device change, for example, if a higher drainage capacity is required frequently or permanently in the future, a new adjustment, i.e., a change in the water seal height, can be made using the adjusting device if necessary.

[0038] The invention is explained in more detail below with reference to several exemplary embodiments. The drawings show schematically: Fig. 1 shows a drainage device according to the invention for producing a water drain embedded in a floor, with a housing, which is shown partially cut away, and an adjustable odor trap, in a perspective view; Fig. 2 shows a sectional view of the drainage device in a side view; Fig. 3 shows a further embodiment of the drainage device according to the invention with a rotatably mounted and eccentrically designed adjusting body, in a perspective view; and Fig. 4 shows the drainage device from Fig. 3 in a different perspective view.

[0039] In the Figures 1 and 2A first exemplary embodiment of a drainage device 1 according to the invention for producing a water drain embedded in a floor (screed) is shown. The drainage device 1 can also be referred to as a floor drain. The drainage device 1 comprises a housing 2 defining a cavity 7, in which an odor trap 3 is arranged to receive sealing water. The odor trap 3 is connected to a connecting pipe section 4 for connection to a drainage line (wastewater line). Wastewater to be drained away, which is to be fed to the drainage line, enters the odor trap 3 via an inlet opening 5 opening into an upper housing section 2.21. The inlet opening 5 can also be referred to as a drain opening.

[0040] The odor trap 3 is wave-shaped or S-shaped and has a first deflection area 3.1 and a second deflection area 3.2 following in the direction of wastewater flow. The seal water height effective against the escape of gases from the wastewater line results from the vertical distance between a deflection edge 3.3 of the first deflection area 3.1 and the seal water level defined by the seal water, the position of which is determined by the vertical position of a pipe wall of the second deflection area 3.2 defining an overflow area or an overflow edge 3.4.

[0041] According to the invention, the odor trap 3 is designed to be adjustable, so that the height of the sealing water level defined by the sealing water can be varied. To adjust the odor trap 3, in the illustrated embodiment, the second deflection area 3.2 can be moved at least partially into different vertical positions, so that the vertical distance between the deflection edge 3.3 and the overflow edge 3.4 is increased or decreased. For this purpose, the odor trap 3 has at least one adjustable line section 3.5, which in the illustrated embodiment is designed to be flexible in the form of a hose.

[0042] In order to ensure unrestricted movement of the odor trap 3 or the second deflection area 3.2 associated with the adjustment of the odor trap 3, the odor trap 3 is arranged in the cavity 7 which is defined by the housing 2 to be embedded in a floor, e.g. screed floor.

[0043] The housing 2, which can also be referred to as a modular system, is composed, for example, of a pot- or box-like lower housing part 2.1 and a lid-like upper housing part 2.2. The lower housing part 2.1 comprises a lower housing section 2.11, while the upper housing part 2.2 comprises the upper housing section 2.21. The lower housing part 2.1 is preferably provided with perforated tabs 2.3, which serve to fix the lower housing part 2.1 to a subfloor using fastening screws or the like. Furthermore, on the outside of the lower housing part 2.1, below its upper edge, several parallel circumferential grooves 2.4 are formed, which serve as guides for a cutting tool in the event of a necessary height reduction of the lower housing part 2.1. The lid-like upper housing part 2.2 has a web 2 that encompasses the upper edge of the lower housing part 2.1.22, which is designed, for example, as a circumferential web along the circumference of the upper housing part 2.2. However, the upper housing part 2.2 can also be designed so that it rests against the inside of the lower housing part 2.1. Furthermore, the housing can also be made in one piece, for example, by blow molding.

[0044] The odor trap 3 is secured at its first deflection area 3.1 by a bracket 2.5, which is, for example, designed in a bracket-like manner and is attached to the lower housing section 2.11. Furthermore, the odor trap 3 is secured at the outlet side by connecting its outlet to the connecting pipe section 4, which, for example, penetrates a side wall of the lower housing section 2.1 or is integrally formed thereon.

[0045] The flexible line section 3.5 is assigned an adjusting device 6 arranged within the housing 2, comprising a raising and lowering adjusting body 6.1. The adjusting body 6.1 is in contact with the flexible line section 3.5 in sections and is arranged between the odor trap 3 and the lower housing section 2.11. By raising or lowering the adjusting body 6.1, the vertical position of the second deflection area 3.2 relative to the lower housing section 2.11 or to the upper housing section 2.21 can be varied.

[0046] The raising and lowering actuator 6.1 is attached to the upper end of a threaded rod 6.2 arranged in the housing 2. The threaded rod 6.2 extends vertically and is rotatably mounted in a bearing element 6.3 of the actuating device 6. A motor drive 8, designed as an electric motor, is also arranged within the housing 2 and can set the threaded rod 6.2 in a rotational movement as needed, so that the actuator 6.1 is raised or lowered depending on the direction of rotation of the threaded rod 6.2.

[0047] Furthermore, in the Figures 1 and 2It can be seen that an inspection opening 9 for maintenance and repair purposes and / or for manual operation of the adjusting device 6 or height adjustment of the odor trap 3 is provided in the upper housing section 2.2. The inspection opening 9 is provided with a removable annular disc-shaped seal 10, in which a frame 11 is mounted for receiving a grate 12, which also defines the drain opening 8. The underside of the annular disc-shaped seal 10 is designed for a fluidic connection to the odor trap 3.

[0048] An operating element and / or a display means (not shown) are arranged below the inspection opening 9. The actuating device 6 or the motor drive 8 can be actuated by means of the operating element. The operating element can alternatively be designed in the form of a mobile remote control. To actuate the motor drive 8 by means of the operating element, the motor drive 8 and the operating element each have components of a transmitter-receiver device that creates a signaling connection between the motor drive 8 and the actuating element, which is designed, for example, using radio technology. The display means has a display area and a displaceably mounted pointer that is displaced in a first direction when the actuating body 6.1 is raised and in a direction opposite to the first direction when the actuating body 6.1 is lowered.A scale of the display area is designed in such a way that a user can read the set height of the sealing water level from a position of the pointer.

[0049] In Fig. 3 A further embodiment of the drainage device 1' according to the invention is shown. Components of the device 1', which, in terms of their function, are components of the Figures 1 and 2 correspond to or are similar to the device 1 shown, are shown in Fig. 3 are provided with the same reference numerals. The elements of the drainage device 1' not described below are essentially the same or identical to the elements of the drainage device 1 described above.

[0050] The Fig. 3The drainage device 1' shown also has a housing 2 defining a cavity 7, in which an odor trap 3 for receiving sealing water is arranged, which is connected to a connecting pipe section 4 for connecting a wastewater line. The housing 2 comprises a pot- or box-like housing lower part 2.1 with a lower housing section 2.11 and a lid-like housing upper part 2.2 defining an upper housing section 2.21, in which an inlet opening 5 is arranged. Wastewater to be drained reaches the odor trap 3 via the inlet opening 5. In this embodiment, the inlet opening 5 merges into a pipe section 5.1 running obliquely to the vertical, to which the odor trap 3 is connected. For its secure positioning, the odor trap 3 is mounted by a holder 2.5 formed in the housing 2 and by the connection to the connecting pipe section 4.

[0051] The odor trap 3 is at least partially wave-shaped or S-shaped and comprises an adjustable pipe section 3.5, which in turn is designed to be flexible in the form of a hose, and a substantially dimensionally stable pipe section 3.6, wherein a first, lower deflection region 3.1 is formed in the dimensionally stable pipe section 3.6 and a second, upper deflection region 3.2, following the first deflection region 3.1 in the direction of flow of the wastewater, is formed in the adjustable pipe section 3.5. The sealing water height effective against sewer gases is in turn determined by the vertical distance between a deflection edge 3.3 of the first deflection region 3.1 and the sealing water level, the position of which is determined by the vertical position of the overflow region or the overflow edge 3.4 of the second deflection region 3.2.

[0052] To adjust the odor trap 3, the second deflection area 3.2 can be moved into various vertical positions, allowing the vertical distance between the deflection edge 3.3 and the overflow edge 3.4 to be increased or decreased. The cavity 7 defined by the housing 2 ensures unrestricted movement of the odor trap 3 or the second deflection area 3.2.

[0053] The flexible line section 3.5 is assigned an adjusting device 6 arranged within the housing 2. The adjusting device 6 comprises an adjusting body 6.1 and a bearing element 6.3 designed to support the adjusting body 6.1. The bearing element 6.3 is connected to the lower housing section 2.11. The bearing element 6.3 is, for example, fork-shaped or formed from two vertical, parallel webs, which have recesses (cutouts) at their upper end 6.31 for receiving a shaft or shaft journal 6.11 connected to the adjusting body 6.1.

[0054] The actuating body 6.1 is rotatably mounted in the bearing element 6.3 and is eccentrically designed, partially in contact with the flexible line section 3.5. For mounting purposes, the actuating body 6.1 is provided with two shaft journals 6.11, which are arranged eccentrically with respect to a central axis of the actuating body 6.1 on a common axis, which can also be referred to as the axis of rotation. The ends 6.31 of the bearing element 6.3 for receiving the shaft journals 6.11 can also be referred to as radial bearing sections. A lever 13 is attached to an end of one of the shaft journals 6.11 facing away from the actuating body 6.1, with which the actuating body 6.1 can be rotated about the axis of rotation. The eccentricity converts the rotation of the actuating body 6.1 into a raising and lowering movement of the second deflection area 3.2 of the odor trap.

[0055] To determine the selected position of the actuating body 6.1, the lever 13 preferably has locking elements on its side facing the bearing element 6.3, which engage in recesses provided for this purpose in the bearing element 6.3. An energy storage element in the form of a spiral spring is optionally attached to an end of the other shaft journal 6.11 facing away from the actuating body 6.1, the free end of which engages in a recess provided for this purpose in the bearing element 6.3. A rotation that deflects the actuating body 6.1 from its original position leads to a preload of the spiral spring, so that it rotates the actuating body 6.1 back to its original position, unless it is fixed by means of the locking elements.

Claims

1. Drainage device (1) for producing a water drain embedded in a floor, comprising a housing (2) defining a cavity (7), an odour trap (3) arranged in the cavity (7) for receiving barrier water, and a connecting pipe piece (4) connected to the odour trap (3) for connecting a drainage pipe, wherein the odour trap (3) is adjustable such that the height of the barrier water level defined by the barrier water is variable, characterised in that the odour trap (3) has at least one adjustable pipe section (3.5) which is flexibly designed and / or formed from at least one flexibly deformable pipe section, wherein an adjusting device (6) is arranged inside the housing (2) for adjusting the barrier water height, wherein the adjusting device (6) has at least one adjusting body (6.1) for adjusting the height of the barrier water level, wherein the adjusting body (6.1) can be raised and lowered or rotated or deformed, and wherein the adjusting device (6) has at least one bearing element (6.3) for supporting the adjusting body (6.1), wherein the bearing element (6.3) is connected to at least one housing section of the housing (2).

2. Drainage device according to claim 1, characterised in that the adjusting device (6) is provided with a mechanical or motorised drive (8) which is arranged inside the housing (2).

3. Drainage device according to claim 1 or 2, characterised in that the adjusting body (6.1) is arranged between the odour trap (3) and an upper housing section (2.21) of the housing (2) and / or between the odour trap (3) and a lower housing section (2.11) of the housing (2).

4. Drainage device according to one of claims 1 to 3, characterised in that the adjusting body (6.1) is rotatably mounted in the bearing element (6.3), wherein the adjusting body (6.1) is eccentrically designed and / or eccentrically rotatably mounted in the bearing element (6.3).

5. Drainage device according to claim 4, characterised in that the eccentrically rotatably mounted adjusting body (6.1) is designed eccentrically or rotationally symmetrically.

6. Drainage device according to one of claims 1 to 5, characterised in that the adjusting device (6) has an energy storage element which is designed to influence the adjusting body (6.1).

7. Drainage device according to one of claims 1 to 6, characterised in that the housing (2) comprises an inspection or access opening (9).

8. Drainage device according to claim 7, characterised in that an operating element for actuating the adjusting device (6) is arranged in the area of the inspection or access opening (9), preferably below the inspection or access opening (9).

9. Drainage device according to claim 8, characterised in that a force transmission element, preferably a cable pull or Bowden cable, is arranged between the operating element and the adjusting device (6) or between the operating element and the drive (8) to provide a functional connection.

10. Drainage device according to claim 8 or 9, characterised in that a lever (13) and / or a gear is arranged to provide a functional connection between the operating element and the adjusting device (6) or between the operating element and the drive (8).

11. Drainage device according to one of claims 1 to 10, characterised in that a display means is arranged in and / or on the housing (2) and is designed to display the height of the water barrier and / or a variable related to the height of the water barrier.

12. Drainage device according to one of claims 1 to 11, characterised in that the drainage device is designed such that a vertical position of an overflow area (3.4) of the odour trap (3) set by means of the adjusting device (6) remains constant or fixed after the adjusting device (6) has been deactivated until it is activated again.