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 reservoir is formed in an overflow container.

[0002] DE 10 2017 129 108 A1 discloses a system comprising a trap and a receiving body. 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 container rim at its upper end. The trap comprises an inlet element insertable into the overflow container, which in the installed state has an inlet rim at its upper end. The inlet rim is located above the container rim of the overflow container when the inlet element is inserted into the overflow container.

[0003] DE 20 2018 104 912 U1 discloses an odor trap for insertion into a receiving opening of a receiving body. The receiving body comprises an overflow container with an overflow opening and a siphon insert accommodated in the overflow container, covering the overflow opening. The overflow container has a handle designed to hold the overflow container at an inlet edge of the receiving body that borders the receiving opening.

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

[0005] DE 103 49 347 A1 discloses a gully with a built-in housing provided with a drain outlet and a odor trap comprising a base element with a drain opening and a U-shaped pipe element adjacent to the drain opening. The odor trap is removably inserted into the built-in housing.

[0006] When designing an odor trap, one aspect that must always be considered is ensuring that the trap has a high absorption capacity. This requires a high absorption capacity and, at the same time, a water seal designed to prevent unhygienic deposits from accumulating over time.

[0007] The invention is based on the object of providing an odor trap for a floor drain which can be kept hygienically clean despite having a large absorption capacity.

[0008] According to the invention, the object is achieved by an odor trap for a floor drain having the features of claim 1. Advantageous embodiments form the subject matter of the subclaims.

[0009] The odor trap according to the invention is intended for a floor drain. The odor trap has an inlet and an overflow container with an overflow edge. The inlet dips 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 makes it possible to direct a fluid flowing into the overflow container via the inlet from the inlet into the overflow container in a flow-optimized manner, so that any change in flow resistance can be kept to a minimum.

[0010] In a preferred embodiment, the inlet has a rectangular cross-section that tapers toward the overflow container. The direction toward the overflow container corresponds to the flow direction of the liquid into the odor trap. The tapered cross-section increases the flow velocity and the overflow into the overflow container, especially with large amounts of liquid.

[0011] In view of the large absorption capacity, a particularly preferred embodiment consists in 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 absorbed, forming a flow channel up to the overflow edge.

[0012] In a preferred embodiment, the overflow tank has a V-shaped water bowl, with the inlet adjacent to one leg of the water bowl. The inclination of the inlet relative to the vertical is advantageously equal to the inclination of one leg of the water bowl. Ideally, this same inclination ensures that there is no kink in the flow channel. A kink in the flow channel would be characterized by a sudden change in the gradient of the walls defining the flow. The liquid flows essentially under the influence of gravity from the inlet into the V-shaped water bowl. Preferably, the base of the V-shaped water bowl is not tapered, but rather semi-circular and rounded.

[0013] To secure the overflow tank to the inlet, one or more protruding fastening pins are provided on the inlet. The protruding fastening pins are each arranged on at least one short side of the inlet. For fastening purposes, the overflow tank is provided with lateral recesses that accommodate the fastening pins. In this way, the overflow tank is suspended from the fastening pin(s) with its recesses. The advantage of using fastening pins on the inlet and recesses on the overflow tank is that no recesses or other obstructions need to be provided in the water reservoir of the overflow tank. Rather, anything that could become a starting point for unhygienic deposits can be avoided in the water reservoir area.

[0014] In a preferred embodiment, the inlet has a protruding locking pin on its long side. The locking pin allows the overflow container to be suspended from the inlet via a corresponding recess on the long side. A corresponding locking device can be used to lock the overflow container to the inlet, ensuring that they form a manageable unit during installation and removal.

[0015] A preferred embodiment of the odor trap according to the invention is explained below with reference to the figures. They show: Fig. 1a, an odor trap in the assembled and unassembled state, Fig. 2 a top view of an odor trap inserted into an inlet pot, Fig. 3 a section along the line BB of Figure 2 , Fig. 4Side views from the right and left as well as a front view and Fig. 5the top view from Figure 3 in the unassembled state.

[0016] Figure 1a shows an inlet 10 and an overflow container 12. The inlet 10 has a circular cylindrical, pot-shaped holding section 14, which has a circumferential holding rim 16. A sealing means 18 with a circumferential groove is placed onto the holding rim 16 in order to seal the inlet 10 in an inlet pot. The holding 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 opposite side walls 28. The side walls 28 are arranged parallel to one another, while the longitudinal walls 24a, b taper towards one another. The side walls 28 are each equipped with a protruding fastening pin 30. The long side 24a carries a protruding locking pin 32.

[0017] The overflow tank 12 has two parallel side walls 34, each of which terminates in a projection 36. The projection 36 forms a recess 38 in the side wall 34. The overflow tank 12 also has two conically tapering longitudinal walls 40a, 40b, which are connected to each other by a curved base 42.

[0018] Figure 1b 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 turned into the Figure 1aThe latch 44 has a receptacle 46 at its free end, which rests on the locking pin 32.

[0019] Fig. 2 shows a top view of an inlet pot 48 with an inserted odor trap 50. The odor trap 50 has a bowl-shaped sieve 52 that keeps coarser material out of 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 with which the inlet pot can be glued into a floor.

[0020] Fig. 3 shows a section along the 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 into the floor. In principle, the drain pipe 58 can also be attached laterally within the inlet pot 48. The odor trap sits with its holding section 14 in the inlet pot 48 and is sealed by the sealing means 18. As can be seen in the sectional view, the longitudinal wall 24a of the inlet rests flat 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.

[0021] Figure 3 also shows a suspended sieve 52, which is intended to keep objects out of the inlet and the overflow container.

[0022] The Figures 4a, b and cshow the complete odor trap consisting of inlet and overflow container in side views and a front view.

[0023] Figure 4a shows a side view of the side wall 40a of the overflow container and the fastening pin 32 with the latch 44. The locked position is shown, in which the receptacle 46 rests on the fastening pin 32 in front of a 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 mounted by pushing the fastening pins 32 into the recess 38, with the locking pin 32 passing through an opening 61 in the rear wall of the overflow container.

[0024] Fig. 4bshows a side view, which clearly shows that a roughly V-shaped flow channel exists for the incoming fluid. A section within the inlet has a tapered cross-section. After the fluid leaves section A, it is deflected by 180° in section B. From the deflection section B, it flows into an outlet area C. The outlet area C has a constant cross-section.

[0025] Fig. 4c shows the overflow container placed on the inlet in a front view, in which the inserted fastening pins 30 can be seen.

[0026] Fig. 5shows a top view showing the rectangular cross-section of the inlet 22. The dimensions of the rectangle are selected, for example, so that the long side L is approximately twice the length of the side wall 1. In the odor trap according to the invention, both the inlet and the overflow, with its V-shaped design, always have a rectangular basic shape, which increases the absorption capacity through the optimized flow channel A, B, C. List of reference symbols used

[0027] 10 Inlet 12 Overflow container 14 Holding section 16 Holding edge 18 Sealant 20 Base 22 Connection piece 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 Odour trap 52 Sieve 54 Flange 56 Adhesive flange 58 Drain pipe 60 Overflow edge 61 Opening

Claims

1. Odour trap (50) for a floor drain with an inlet (10) and an overflow container (12) having an overflow edge (60), wherein the inlet (10) dips into the overflow container (12) to form a water seal, characterized in that the overflow container (12) is detachably attached to the inlet (10).

2. Odour trap (50) according to claim 1, characterized in that the inlet (10) has a rectangular cross-section which tapers towards the overflow tank (12).

3. Odour trap (50) according to claim 1 or 2, characterized in that the overflow container (12) is attached to the inlet (10) in such a way that the inlet (10) opens into the overflow container (12) off-center.

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

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

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

7. Odour 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).

8. Odour trap (50) according to one of claims 1 to 7, characterized in that the inlet (10) has a protruding locking pin (32) on its long side (24a, b).

9. Odour trap (50) according to claim 8, characterized in that the overflow container (12) has a receptacle (46) for the protruding locking pin (32) on one longitudinal side (24a, b).

10. Odour trap (50) according to claim 9, characterized in thata locking device is provided which locks the overflow container (12) and inlet (10) to the locking pin (32).