Odour seal for a floor inlet

Abstract

Odor trap for a floor drain with an inlet and an overflow container having an overflow rim, wherein the inlet dips into the overflow container to form a water seal, wherein the overflow container is detachably attached to the inlet.

Description

[0001] The present invention relates to an odor trap for a floor drain in which a water seal is formed in an overflow container.

[0002] From DE 102017 129 108 A1, a system comprising a trap and a receiving body is known. The trap is inserted into the receiving body in an installed state. The trap further comprises an overflow container which, in an installed state, has a rim at its upper end. The trap includes an inlet element that can be inserted into the overflow container and has an inlet rim at its upper end in the installed state. When the inlet element is inserted into the overflow container, the inlet rim is located above the rim of the overflow container.

[0003] From DE 20 2018 104 912 U1, a trap for insertion into a receiving opening of a receiving body is known. The receiving body has an overflow container with an overflow opening and a siphon insert that is incorporated into the overflow container and covers the overflow opening. The overflow container has a handle designed to hold the overflow container against an inlet rim of the receiving body that borders the receiving opening.

[0004] From DE 10 239 787 A1, a gully with a trap is known, which has a drain outlet attached to the bottom of a housing and accessible via a cleaning opening. Furthermore, a U-shaped pipe element is provided, which forms a water seal and projects into the drain outlet.

[0005] From DE 103 49 347 A1, a gully with a built-in housing is known, which is provided with a drain outlet and has a trap comprising a base element with a drain opening and a U-shaped pipe element adjacent to the drain opening. The trap is removable and inserted into the built-in housing.

[0006] When designing any odor trap, one aspect that must always be considered is its high absorption capacity. This high absorption capacity must be combined with a water seal designed to prevent the accumulation of unhygienic deposits over time.

[0007] From EP 1 627 968 ​​A2, a water trap for installation in a floor drain is known. The trap comprises an upper and a lower part, which are removable as a single unit. The upper part has a wastewater inlet leading into a dip tube that extends into the lower part, which forms a bowl. The bowl and dip tube define the trap. The upper and lower parts are either fitted together or glued together.

[0008] GB 2 402 946 A describes a wastewater siphon with a siphon body having an inlet opening at its upper end and a side outlet opening. A bowl is detachably mounted, with a dip tube connected to and extending into the bowl. The bowl and dip tube define a water flow path from the inlet opening downwards through the dip tube upwards through the bowl and over the rim to the outlet opening.

[0009] EP 2 824 248 A1 describes a trap for connection to a drain body suitable for permanent installation in the floor. The trap comprises an overflow tray with a base, a side wall, and an overflow rim defined on the side wall. Connecting elements are also provided to allow connection to a receiving section of the drain body.

[0010] From FR 3 026 420 A1, a shower drain is known in which a trough-shaped receiving channel opens into a trap, the trap having a centrally arranged immersion pipe and an overflow pot. The overflow pot is attached at its base to a mounting pot.

[0011] EP 3 805 473 A2 describes a trap for installation in a drain pan, comprising an upper part with an immersion tube. A lower part is designed as an open-topped container, with the immersion tube projecting into the container when installed. The upper and lower parts are detachably connected to each other by means of snap-fit ​​elements and a snap-fit ​​receptacle, either positively or non-positively.

[0012] The invention is based on the objective of providing an odor trap for a floor drain that can be kept hygienically clean despite a large absorption capacity and can be easily installed.

[0013] According to the invention, the problem is solved by an odor trap for a floor drain with the features of claim 1. Advantageous embodiments are the subject matter of the dependent claims.

[0014] The odor trap according to the invention is designed for a floor drain. The odor trap has an inlet and an overflow container with an overflow rim. The inlet extends into the overflow container to form a water seal. According to the invention, the overflow container is detachably attached to the inlet. The detachable attachment of the overflow container to the inlet means that the inlet is held in the floor drain, for example, by its inlet cup, and the overflow container is attached to the inlet thus held. This allows fluid flowing from the inlet into the overflow container to be introduced into the overflow container in a flow-efficient manner, thus minimizing changes in flow resistance.

[0015] According to the invention, the inlet has a protruding locking pin on its longitudinal side. The overflow container, with a corresponding recess on its longitudinal side, can be attached to the inlet via this locking pin. A locking mechanism secures the overflow container to the inlet, ensuring that they form a manageable unit during installation and removal.

[0016] In a preferred embodiment, the inlet has a rectangular cross-section that tapers towards the overflow container. The direction towards the overflow container corresponds to the flow direction of the liquid into the trap. The tapered cross-section increases the flow velocity and the overflow into the overflow container, especially with large volumes of liquid.

[0017] With regard to the large flow capacity, a particularly preferred embodiment consists of attaching the overflow container to the inlet in such a way that the inlet opens into the overflow container off-center. This embodiment utilizes the geometry of the overflow container for the fluid to be received, forming a flow channel up to the overflow edge.

[0018] In a preferred embodiment, the overflow container has a V-shaped water bowl, with the inlet resting against one leg of the bowl. Advantageously, the inclination of the inlet relative to the vertical is equal to the inclination of one leg of the bowl. Ideally, this equal inclination prevents any kink in the flow channel. A kink in the flow channel would be characterized by an abrupt change in the slope of the walls that confine the flow. The liquid flows from the inlet into the V-shaped water bowl primarily under the influence of gravity. Preferably, the base of the V-shaped water bowl is not pointed but semi-circularly rounded.

[0019] To attach the overflow tank to the inlet, one or more protruding mounting pins are provided on the inlet. These protruding mounting pins are each positioned on at least one short side of the inlet. For attachment, the overflow tank has lateral recesses that accommodate the mounting pins. In this way, the overflow tank is suspended from the mounting pin(s) by its recesses. The advantage of using mounting pins on the inlet and recesses on the overflow tank is that no recesses or other obstructions are required in the water reservoir of the overflow tank. Rather, everything that could provide a starting point for unhygienic deposits can be avoided in the water reservoir area.

[0020] A preferred embodiment of the odor trap according to the invention is explained below with reference to the figures. They show: Fig. 1a, a trap in the installed and uninstalled state, Fig. 2 a top view of a trap inserted into an inlet pot, Fig. 3 a section along line BB from Figure 2 Fig. 4 Side views from the right and left as well as a front view and Fig. 5 the top view from Figure 3 in the unassembled state.

[0021] Figure 1aFigure 1 shows an inlet 10 and an overflow container 12. The inlet 10 has a circular cylindrical, pot-shaped retaining section 14, which has a circumferential retaining rim 16. A sealing element 18 with a circumferential groove is fitted onto the retaining rim 16 to seal the inlet 10 in an inlet pot. The retaining section 14 has a flat base 20 to which a box-shaped nozzle 22 is attached. The nozzle 22 has a rectangular inlet, the free surface of which tapers in the direction of flow. The nozzle 22 has two longitudinal walls 24a, 24b and two opposing side walls 28. The side walls 28 are arranged parallel to each other, while the longitudinal walls 24a, b taper conically towards each other. The side walls 28 are each equipped with a projecting fastening pin 30. The longitudinal side 24a carries a projecting locking pin 32.

[0022] The overflow container 12 has two parallel side walls 34, each terminated with a projection 36. The projection 36 forms a recess 38 in the side wall 34. The overflow container 12 also has two conically converging longitudinal walls 40a, 40b, which are connected to each other via a curved base 42.

[0023] Figure 1b Figure 1 shows the assembled state in which the overflow container 12 is attached to the inlet 10. For this purpose, the fastening pins 30 are received in the recess 38 and the locking pin 32 is secured by a latch 44 provided on the overflow container. The latch 44 is pivotally mounted on the overflow container and can be opened to attach the overflow container to the inlet. To secure the overflow container 12 to the inlet, the latch 44 is inserted into the recess 38. Figure 1aThe closed position shown is pivoted. The bolt 44 has a receptacle 46 at its free end, which rests on the locking pin 32.

[0024] Fig. 2 Figure 1 shows a top view of an inlet pot 48 with an integrated odor trap 50. The odor trap 50 has a cup-shaped sieve 52 that retains coarser material from the inlet and the overflow container. The inlet pot 48 has a circular cylindrical shape with a square flange 54. The inlet pot also has an adhesive flange 56, which allows it to be glued into a floor.

[0025] Fig. 3 shows a section along line BB from Figure 2The cylindrical inlet pot 48 with its adhesive flange 56 is clearly visible. The inlet pot 48 also has a drain pipe 58, which in the illustrated embodiment runs downwards in the base. In principle, the drain pipe 58 can also be attached laterally to the inlet pot 48. The odor trap sits in the inlet pot 48 with its retaining section 14 and is sealed by the sealing elements 18. As can be seen in the sectional view, the longitudinal wall 24a of the inlet lies flush against the side wall 40a of the overflow container 12. The overflow edge 60 runs horizontally and is located below the fastening pins 30 (not shown) and the locking pin 32.

[0026] Figure 3 The figure also shows a suspended sieve 52, which is intended to keep objects out of the inlet and the overflow container.

[0027] The Figure 4a, b and cThe images show the complete odor trap consisting of inlet and overflow containers in side views and a front view.

[0028] Figure 4a Figure 1 shows a side view of the side wall 40a of the overflow container and the fastening pin 32 with the locking bolt 44. The locked position is shown, in which the receptacle 46 rests on the fastening pin 32 in front of the head of the fastening pin. It is also clearly visible that the fastening pin 32 protrudes through a recess in the rear wall 40a. This means that the overflow container is placed on top by pushing the fastening pins 32 into the recess 38, with the locking pin 32 entering through an opening 61 in the rear wall of the overflow container.

[0029] Fig. 4bFigure 1 shows a side view, clearly revealing an approximately V-shaped flow channel for the incoming fluid. Within section A of the inlet, the cross-section narrows. After exiting section A, the fluid is deflected by 180° in section B. From this deflection section B, it enters an outlet area C. Outlet area C has a constant cross-section.

[0030] Fig. 4c shows the overflow container placed on the inlet in a front view, in which the inserted fastening pins 30 can be seen.

[0031] Fig. 5Figure 1 shows a top view in which the rectangular cross-section of the inlet 22 is visible. The dimensions of the rectangle are chosen, for example, such that the longitudinal side L has approximately twice the length of the side wall l. In the odor trap according to the invention, both the inlet and the overflow, with its V-shaped design, always have a rectangular base, which increases the absorption capacity through the optimized flow channel A, B, C. List of reference symbols used

[0032] 10 Inlet 12 Overflow container 14 Retaining section 16 Retaining edge 18 Sealant 20 Base 22 Spigot 24a, b Longitudinal walls 28 Side walls 30 Fastening pin 32 Locking pin 34 Side wall 36 Projection 38 Recess 40a, b Longitudinal walls 42 Base 44 Latch 46 Receptacle 48 Inlet pot 50 Odor trap 52 Strainer 54 Flange 56 Adhesive flange 58 Drain pipe 60 Overflow edge 61 Opening

Claims

1. Odor trap (50) for a floor drain with an inlet (10) having at least one longitudinal side (24a, 24b) and an overflow container (12) which has an overflow edge (60), wherein the inlet (10) dips into the overflow container (12) to form a water seal, wherein the overflow container (12) is detachably fastened to the inlet (10), characterized in that the inlet (10) has a protruding locking pin (32) on its longitudinal side (24a, 24b) and the overflow container (12) has on a longitudinal side (40a, 40b) a receiving portion (46) for the protruding locking pin (32) of the inlet (10) and further a locking device is provided, which has a pivotable latch (44) on the overflow container, which, in order to lock the overflow container (12) and inlet (10) to the locking pin (32), has the receiving portion (46) at its free end, which in a closed position comes to rest on the locking pin.

2. Odor trap (50) according to claim 1, characterized in that the inlet (10) has a rectangular cross-section which tapers in the direction of the overflow container (12).

3. Odor trap (50) according to claim 1 or 2, characterized in that the overflow container (12) is fastened to the inlet (10) such that the inlet (10) opens eccentrically into the overflow container (12).

4. Odor trap (50) according to claim 3, characterized in that the overflow container (12) has a V-shaped water bowl, wherein the inlet (10) abuts against a leg of the water bowl.

5. Odor trap (50) according to claim 4, characterized in that an inclination of the inlet relative to the vertical corresponds to an inclination of one of the legs of the water bowl.

6. Odor trap (50) according to one of claims 1 to 5, characterized in that the inlet (10) has at least one pair of short sides and has at least one protruding fastening pin (30) on each of its short sides.

7. Odor trap (50) according to claim 6, characterized in that the overflow container (12) has a lateral recess (38) on at least one side wall (34), which receives the fastening pins (30).

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