Odour trap for insertion into a receiving body with a leaving connection

Abstract

Odor trap for insertion into a receiving body with an outlet nozzle, comprising a standpipe with an overflow opening at an upper end and with a lower end projecting into the outlet nozzle, a siphon bell which covers the upper end of the standpipe with a lid wall and which encompasses the standpipe with a side wall, a sealing element which seals gas- and liquid-tight between the outlet nozzle and the standpipe, characterized in that an inner pot is provided with a side wall, a base and with an opening in the base through which the standpipe is inserted such that the upper end of the standpipe is located above the base of the inner pot, the sealing element is arranged below the inner pot, the side wall of the inner pot encompasses the side wall of the siphon bell,A spacer holds the siphon bell at a distance from the bottom of the inner pot, and the siphon bell forms a water seal with the side wall of the inner pot and the standpipe.

Description

[0001] The invention relates to an odor trap for insertion into a receiving body with an outlet connection. Furthermore, the invention relates to a system comprising a receiving body and such an odor trap.

[0002] Such an odor trap serves to seal off an outlet connection of the receiving body, preventing the ingress of odors. The receiving body can, for example, be a floor drain in a room in a facility in the food, chemical, or pharmaceutical industry. The outlet connection of the receiving body can be used to drain liquids from the room, particularly through a drainage channel. The liquid to be drained passes through the odor trap protruding into the outlet connection and reaches, for example, a sewer system via the outlet connection. Such odor traps usually have a water reservoir acting as a water seal, with a siphon insert protruding into the water reservoir. The odor trap prevents gas exchange between the sewer system and the room to be separated. This prevents odors from the sewer system from entering the room through the outlet connection.It is always desirable for an odor trap to have the longest possible lifespan.

[0003] With conventional odor traps, a seal is required between the outlet nozzle and the odor trap to form the water reservoir.

[0004] DE 20 2018 104 912 U1 describes such an odor trap for insertion into a receiving opening of a receiving body, wherein the odor trap comprises an overflow container with an overflow opening and a siphon insert received in the overflow container and covering the overflow opening, and wherein the overflow container has a handle designed to hold the overflow container at an inlet edge of the receiving body delimiting the receiving opening.

[0005] Based on the prior art explained, the invention is based on the object of providing an odor trap in which a water seal is created and maintained independently of a sealing of the outlet nozzle.

[0006] According to the invention, the object is achieved by an odor trap according to claim 1 and by a system comprising an odor trap and a receiving body according to claim 10. Advantageous embodiments are the subject of the dependent claims and the description as well as the figures.

[0007] Unless otherwise stated, the following description and claims refer to an assembled state in which the individual components of the odor trap are assembled and inserted into the receiving body. Location and direction references such as "top," "bottom," "vertical," "horizontal," "inside," "outside," "radial," etc., also refer to this assembled state, with the sewerage system at the bottom, the vertical direction running from top to bottom, a vertical axis of symmetry of the odor trap being inside, and the radial direction perpendicular to the axis of symmetry pointing from inside to outside.

[0008] The odor trap according to the invention for insertion into a receiving body with an outlet nozzle comprises a standpipe with an overflow opening at an upper end and with a lower end that projects into the outlet nozzle, a siphon bell, which covers the upper end of the standpipe with a cover wall and which encloses the standpipe with a side wall, as well as a sealing element that forms a gas- and liquid-tight seal between the outlet nozzle and the standpipe, and is characterized in that an inner pot is provided with a side wall, a base, and an opening in the base through which the standpipe is inserted such that the upper end of the standpipe is located above the base of the inner pot, the sealing element is arranged below the inner pot, the side wall of the inner pot encloses the side wall of the siphon bell,a spacer keeps the siphon bell at a distance from the bottom of the inner pot and the siphon bell forms a water seal with the side wall of the inner pot and the standpipe.

[0009] The system according to the invention comprises an odor trap according to one of the preceding claims and a receiving body which comprises an outlet nozzle and an outer pot, wherein the outer pot comprises a side wall and a base, the base of the outer pot has an opening with which the outlet nozzle is flush, the side wall of the outer pot encloses the side wall of the inner pot and the odor trap rests on the outer pot or the outlet nozzle.

[0010] The odor trap works as follows: Liquid that is poured into the holder flows into the inner pot. The opening of the inner pot is connected to the standpipe in a liquid-tight manner, so that no liquid can drain out of the inner pot through the opening through which the standpipe is inserted. As soon as so much liquid has collected in the inner pot that it reaches higher than the top of the standpipe, the water flows through the overflow opening of the standpipe into the standpipe and from there into the outlet nozzle of the holder. The closed siphon bell covers the overflow opening of the standpipe and protrudes with its side walls into the liquid standing in the inner pot. The spacer keeps the siphon bell at a distance from the base of the inner pot so that the sides of the siphon bell do not touch the base of the inner pot.The side walls of the siphon bell are so high that, when assembled and inserted into the inner pot, the cover wall of the siphon bell is spaced away from the drain opening of the standpipe. The liquid can and must flow under the siphon bell until it can drain through the overflow opening. The siphon bell divides the liquid in the inner pot into an inner and outer section. The inner section borders directly on the standpipe and is covered by the siphon bell, while the outer section borders on the side wall of the inner pot. The outer and inner sections are only connected by one area that has no contact with the liquid surface. These two liquid areas, connected without surface contact, are also called the water seal.Gas rising from the sewer system through the standpipe is prevented from escaping by the siphon's cover and the water seal. The water seal thus serves to seal off odors from the sewer system.

[0011] The seal ensures that liquid poured into the receiving body actually drains through the inner pot and does not leak sideways between the standpipe and the outlet nozzle. It also prevents gas from the sewer system from flowing sideways past the standpipe and into the space above the odor trap. However, the seal is not necessarily required to form the water seal. According to the invention, the water seal between the inner pot and the standpipe remains intact even if the seal is damaged or no longer functional.

[0012] The receiving body can be designed so that the uppermost part of the odor trap, usually the cover wall of the siphon bell, is flush with the outer pot of the receiving body, so that the odor trap is installed flush with the floor of the room to be sealed. Other designs are also possible, creating a geometric relationship between the receiving body, odor trap, and the end of the sewer pipe that is appropriate for the purpose. The precise connection of the outer pot and the outlet nozzle must also be adapted to the specific application and can be designed differently. It is common for the outer pot, outlet nozzle, inner pot, standpipe, and siphon bell to be rotationally symmetrical.

[0013] According to the invention, the inner pot and the standpipe form a unit that corresponds to the overflow container of a conventional odor trap. By inventively dividing a one-piece overflow container, as found in odor traps of the type described above, into an inner pot and a standpipe, the standpipe can extend into the outlet nozzle without the inner pot being located in the outlet nozzle. The water seal formed in the inner pot can thus be arranged above the seal. According to the invention, liquid poured into the receiving body always flows through the inner pot and then through the standpipe to reach the sewer system. Even if the seal no longer seals properly due to material aging or damage, a large portion of the liquid still reaches the sewer system through the odor trap, with the water seal constantly being renewed.The water seal is also maintained regardless of the condition of the seal between the inner pot and the standpipe. Consequently, the seal is no longer required to form and maintain the water seal, allowing the odor trap to last longer. This is particularly advantageous compared to conventional odor traps that do not have an inner pot and in which the water seal is formed between the standpipe and a wall of the receiving opening surrounding the standpipe. It can be assumed that even an aging seal will still provide sufficient sealing against gas rising from the sewer system, even if it is no longer completely impervious to liquids.

[0014] In particular, the inner pot and standpipe can be made from two separate parts that are then joined together. By splitting them into two separate components, these two individual components can be manufactured particularly easily.

[0015] In one embodiment, the sealing element is a rolling ring. A rolling ring seal is inexpensive and offers favorable sealing properties. Compared to other seals, such as lip seals, rolling ring seals provide a tight seal even if the standpipe is not precisely aligned with the outlet support. Even if the standpipe is tilted, the rolling ring seal fits tightly against the standpipe and the outlet support, thus ensuring a tight seal. Using a rolling ring seal also allows for particularly simple installation of the odor trap in the housing.

[0016] According to one design, the standpipe has a circumferential recess on its outer side, in which the rolling ring is located. By creating this recess, the sealing ring can be pre-assembled on the standpipe and inserted into the housing together with the odor trap. The recess thus facilitates installation. Furthermore, the recess ensures that the sealing ring sits securely and cannot slip down into the outlet connection, even during operation. This recess is commonly referred to as a sealing bead.

[0017] According to one design, the inner pot does not touch the receiving body. If both the outer pot and the inner pot are made of metal, metal-to-metal contact is prevented. Such metal-to-metal contact can lead to accelerated wear and should therefore be avoided. In particular, such contact promotes corrosion.

[0018] In one design, the base of the inner pot is welded to the standpipe. Welding allows the use of simply shaped sheet metal parts, resulting in favorable manufacturing properties and thus low production costs. Furthermore, welding is both easy to handle and inexpensive.

[0019] According to one embodiment, the siphon bell has a handle that allows the siphon element to be removed from the odor trap. The handle allows for easy lifting of the siphon bell. This allows for both simple installation and removal. Furthermore, the simple removal allows for easy removal of the siphon bell for cleaning.

[0020] According to one embodiment, the standpipe has a widened portion located between the sealing element and the inner pot, with which the standpipe rests on the receiving body. The widened portion represents a section of the standpipe whose diameter is larger than the diameter of the section that protrudes into the outlet nozzle. In particular, the diameter is larger than that of the outlet nozzle. When the lower end of the standpipe is inserted into the outlet nozzle, the odor trap rests with the widened portion on the outlet nozzle or on the receiving body. The widened portion thus defines a vertical position of the odor trap relative to the receiving body in the assembled state. In this way, it is clearly defined where the lower end of the standpipe that protrudes into the outlet nozzle is.This makes it particularly easy to position the seal and the inner pot during construction, in order to enable the advantageous positioning of the water seal above the seal.

[0021] The widened section also facilitates defined assembly. Furthermore, such a widened section of the standpipe is easy to manufacture, so the resulting vertical positioning is associated with low manufacturing costs. Furthermore, the widened section can cover the entire circumference, so that a certain sealing effect is achieved simply by contact with the widened section as a result of the standpipe resting on the receiving body. This sealing effect supports the inventive goal of decoupling the provision of a seal against odors from the sewer system from the condition of the seal to a greater extent than has previously been the case in the prior art.

[0022] According to one embodiment, the spacer is formed by at least two metal sheets that are firmly connected to the siphon, arranged between the inner pot and the siphon, extend vertically, and are distributed over the circumference of the side wall of the siphon. To form the water seal, the siphon bell must not rest with the abutting edge of its side edges on the bottom of the inner pot. Otherwise, liquid could not reach the overflow opening from the inner pot and, consequently, liquid could not drain through the odor trap. To prevent the siphon bell from falling over, the metal sheets must be of an appropriate size and distributed over the circumference of the siphon bell. To impede the flow as little as possible, at least two vertically extending metal sheets connected to the siphon bell can be used.

[0023] Unless the siphon bell is made of metal, the sheets are also made of metal. In this case, the term "sheet" simply refers to a flat, planar element with two main directions of expansion.

[0024] According to one embodiment, the spacer is formed by three metal sheets that extend in a radial direction and whose inner abutting edges rest against the standpipe. The radial extension of the metal sheets enables favorable flow characteristics, which allow any liquid poured in, flowing from the outside to the inside, to drain away quickly. This has a positive effect on the absorption capacity of the odor trap. Furthermore, the inner abutting edges of the metal sheets ensure that the siphon bell is centered in a radial direction relative to the inner pot and the standpipe. This prevents the siphon bell from making unwanted contact with the inner areas of the side walls of the inner pot in one area. The centering also greatly simplifies the positioning of the siphon bell during installation. Precise installation allows for appropriate planning and optimal drainage characteristics to be provided during construction.

[0025] An embodiment of the invention is explained in more detail below with reference to the figures. They show: Fig. 1 is a side sectional view of an odor trap and receiving body according to the invention; Fig. 2 is a side sectional view of a version of the odor trap with a lifting bracket.

[0026] In Fig. 1The odor trap 1 is shown. In the embodiment shown, it has a standpipe 2, an inner pot 3, a siphon bell 4, a spacer 5, and a sealing element 6. The odor trap 1 is inserted into the receiving body 7. The receiving body 7 has an outer pot 8 and an outlet nozzle 9. The outlet nozzle 9 leads to a sewer system (not shown). In the present embodiment, all components are round, which is also illustrated by the drawn line of symmetry. In principle, however, other shapes are also possible, such as an oval or square shape.

[0027] The base 10 of the inner pot 3 has an opening 11 through which the standpipe 2 is inserted. In the area of ​​the opening 11, the standpipe 2 and the base of the inner pot 10 are welded together in a liquid-tight and gas-tight manner. The overflow opening 12 at the upper end of the standpipe 2 is located approximately at the same height as the abutting edge of the side wall 13 of the inner pot 3. The side wall 13 defines a volume that is open upwards and limited at the bottom by the base 10. The siphon bell 4 is positioned so that its side wall 14 is located between the side wall of the inner pot 13 and the standpipe 13. The cover wall 15 of the siphon bell 4 is located above the overflow opening 12. In contrast to the inner pot 3, the siphon bell 4 is therefore open downwards. Between the joints of the side wall 14 of the siphon bell 4 and the base 10 of the inner pot 3 there is the distance 16, which is defined by the spacer 5.The spacer 5 is firmly connected to the siphon bell 4 and rests on the base 10 of the inner pot 3. The siphon bell can be lifted using the handle element 17 during installation and removal. Once the siphon bell is removed, the odor trap 1 can be easily cleaned.

[0028] The outer pot 8 has an opening 18, to which the outlet nozzle 9 is directly connected and flush. The standpipe 2 has an expanded portion 19, which rests on the outer pot 8 and, when assembled, defines the vertical position of the odor trap 1 relative to the receiving body 7. The odor trap 1 is thus manufactured and mounted in the receiving body 7 such that the standpipe 2 protrudes into the outlet nozzle 9 with a lower end 20. Furthermore, the inner pot 3 is welded to the standpipe 2 such that the base 10 is at a distance 21 from the outer pot 8 in the vertical direction. The outer pot 8 also has a larger diameter than the inner pot 3, so that the inner pot 3 is enclosed by the outer pot 8. Below the inner pot 3, the odor trap 1 has a seal 6, which is embedded in a sealing bead 22 of the standpipe 2.The seal is designed as a rolling ring seal and encloses the standpipe 2 so that the circumferential gap between the outlet nozzle 9 and the standpipe 2 is sealed liquid-tight and gas-tight.

[0029] Liquid that is poured into the receiving body 7 can only reach the sewer system through the standpipe 2 due to the seal 6. However, the cover wall 15 of the siphon bell 4 covers the overflow opening 12 so that the liquid cannot enter the standpipe 2 directly. Poured-in liquid initially collects in the inner pot 3. As soon as there is a sufficient amount of liquid, the liquid level exceeds the height of the upper part of the standpipe 2, which protrudes above the base 10 of the inner pot 3. The liquid then flows through the overflow opening 12 into the sewer system. If no more liquid is poured in, the portion of the liquid that is in the inner pot 3 remains there. The liquid still in the inner pot 3 is divided into two sections by the side wall 14 of the siphon bell.The first, outer area is in contact with the space above the odor trap 1, is located in the outer area of ​​the inner pot 3, and is in contact with the side wall 13 of the inner pot 3. The second, inner area is in the inner area of ​​the inner pot 3, which borders the standpipe 2. The inner and outer areas are only connected to each other in the area of ​​the gap 16. The inner area has no contact with the space above the odor trap 1 because the cover wall 15 of the siphon bell 4 is located above it. This accumulation of liquid in the inner pot 3, consisting of the inner and outer areas, is called the water seal. The water seal prevents gas rising from the sewer from entering the space above the odor trap and instead only accumulating below the cover wall 15.

[0030] The seal 6 prevents liquid from passing between the odor trap 1 and the outlet nozzle 9. When liquid is added, liquid also collects between the outer pot 8 and the inner pot 3. Once the liquid has accumulated to a sufficient level, it flows over the side wall 13 into the inner pot 3 and finally through the overflow opening 12 into the sewer system. Even if the seal 6 no longer seals optimally due to age, it still prevents a large amount of liquid from flowing past, so that the majority of the liquid flows out via the odor trap 1, renewing the water seal. The formation of the water seal in the present embodiment is therefore less dependent on the intact seal than in conventional odor seals. The water seal is also maintained regardless of the condition of the seal.

[0031] Fig. 2shows a second embodiment, characterized by a bow handle 23. This is inserted through holes 24 in the side wall 13. In the figure, it is shown in a stowed position. In this position, the bow handle 23 is folded so that it rests against the side wall 13. Its shape corresponds to the shape of the side wall 13, so that it lies flush. The bow handle 23 can also be raised so that it points upwards in a semicircle. The semicircular part of the bow handle 24 can then be easily grasped to lift the odor trap 1.

[0032] The Fig. 1 and Fig. 2The odor traps 1 shown have common properties. The floor drain is completely self-draining, which means that when the odor trap 1 is pulled out of the receiving body 7, the sealing water drains completely. Furthermore, the sealing element 6 for creating gas tightness between the sewer system and the space above it, i.e., between the wastewater side and the factory hall, is located below the sealing water. The present design seals against the inner wall of the outlet nozzle 9, not against the inner wall of the outer pot 8 like conventional solutions. This is a major advantage, especially for two-part floor drains, because the joint between the outer pot 8 and the outlet nozzle 9 can represent a gas leak between the sewer system and the space above it. Furthermore, the odor trap 1, when inserted, retains the sealing water regardless of the condition or presence of the sealing element 6. Reference symbol

[0033] 1 Odor trap 2 Standpipe 3 Inner pot 4 Siphon bell 5 Spacer 6 Sealing element 7 Receptacle 8 Outer pot 9 Outlet nozzle 10 Base of the inner pot 11 Opening in the base 12 Overflow opening 13 Side wall of the inner pot 14 Side wall of the siphon bell 15 Cover wall of the siphon bell 16 Distance between siphon and base 17 Handle element 18 Opening of the outer pot 19 Widening of the standpipe 20 Lower opening 21 Distance between inner pot and outer pot 22 Sealing bead 23 Bow handle 24 Hole in the side wall

Claims

1. Odour trap (1) for insertion into a receiving body (7) with an outlet nozzle (9), comprising o a standpipe (2) with an overflow opening (12) at an upper end and with a lower end that projects into the outlet nozzle (9), o a siphon bell (4) that covers the upper end of the standpipe (2) with a cover wall (15) and that encloses the standpipe with a side wall (14), o a sealing element (6) that forms a gas- and liquid-tight seal between the outlet nozzle (9) and the standpipe (2), characterized in thato an inner pot (3) with a side wall (13), a base (10) and with an opening (11) in the base through which the standpipe (2) is inserted such that the upper end of the standpipe (2) is located above the base (10) of the inner pot (3), o the sealing element (6) is arranged below the inner pot (3), o the side wall (13) of the inner pot (3) encompasses the side wall (14) of the siphon bell (4), o a spacer keeps the siphon bell (4) at a distance (16) from the base (10) of the inner pot (3) and o the siphon bell (4) forms a water seal with the side wall (13) of the inner pot (3) and the standpipe (2).

2. Odour trap according to claim 1, characterized in that the sealing element (6) is a rolling ring.

3. Odour trap according to claim 2, characterized in that the standpipe (2) has on an outer side a circumferential recess (22) in which the rolling ring is located.

4. Odour trap according to one of claims 1 to 3, characterized in that the inner pot (3) does not touch the receiving body (7).

5. Odour trap according to one of claims 1 to 4, characterized in that the base (10) of the inner pot (3) is welded to the standpipe (2).

6. Odour trap according to one of claims 1 to 5, characterized in that the siphon bell (4) has a handle element (17) with which the siphon element (4) can be removed from the odor trap (1).

7. Odour trap according to one of claims 1 to 6, characterized in that the standpipe (2) has an expansion (19) which is located between the sealing element (6) and the inner pot (3), and with which the standpipe (2) rests on the receiving body (7).

8. Odour trap according to one of claims 1 to 7, characterized in thatthe spacer is formed by at least two sheets which are firmly connected to the siphon, which are arranged between the inner pot and the siphon, which extend in the vertical direction and which are distributed over the circumference of the side wall of the siphon.

9. Odour trap according to claim 8, characterized in that the spacer is formed by three sheets which extend in the radial direction and which rest against the standpipe with their inner abutting edges.

10. System comprising o an odor trap (1) according to one of the preceding claims and o a receiving body (7) which comprises an outlet nozzle (9) and an outer pot (8), o wherein ▪ the outer pot (8) comprises a side wall and a base, ▪ the base of the outer pot (8) has an opening (18) with which the outlet nozzle (9) is flush, ▪ the side wall of the outer pot (8) encloses the side wall (13) of the inner pot (13) and ▪ the odor trap (1) rests on the outer pot (8) or the outlet nozzle (9) in such a way that a distance (21) remains between the outer pot (8) and the inner pot (3).

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