drainage system

Abstract

The invention relates to a drainage system (1) for installation in a building floor (14), in particular a concrete floor, comprising at least one comb-shaped profile element (5) with a profiled base (15) from which comb-like ribs (17) with intermediate grooves (19) extend in a longitudinal direction (x) of the system. According to the invention, the drainage system (1) has at least one channel body (3) in the interior of which the comb-shaped profile element (5) is arranged as an insert.

Description

[0001] The invention relates to a drainage system for installation in a building floor, in particular in a concrete floor, according to the preamble of claim 1.

[0002] Such a drainage system is frequently used in areas where controlled drainage of surface water is necessary, such as in industrial floors, warehouses, parking garages, or public facilities. The aim of the drainage system is to effectively collect and drain water to protect the structural integrity of the building and ensure safety through a dry and slip-free surface.

[0003] In common practice, drainage systems are implemented using either a drainage channel or a comb-shaped profile element. Both designs have their specific characteristics: A drainage channel typically consists of a U-shaped channel body with a grate on top to allow water to flow away. However, this type of channel requires a significantly greater depth to ensure both sufficient flow cross-section and the capacity of the grate. This often leads to structural limitations in shallow soils, as the increased depth of the drainage channel places additional stress on the foundation. Furthermore, installation frequently necessitates extensive modifications to the soil structure, resulting in higher construction costs and increased time.

[0004] In contrast, a comb-shaped profile element offers a particularly flat design. Thanks to its compact, comb-like profile, water is efficiently drained away through the grooves between the ribs, eliminating the need for a significant installation height. Comb-shaped profile elements can therefore be integrated into the building floor in a space-saving and flush manner, simplifying installation in shallow floor structures and minimizing the risk of tripping hazards. At the same time, the structural stability of the building floor is less affected, as comb-shaped profile elements do not require extensive structural modifications and can be embedded flush with the floor surface.

[0005] From EP 1 502 998 B1, a drainage system of this type is known in which the serrated profile element is made of polymer concrete and cast directly into the building foundation. This system has a high component weight and is inflexible, which complicates installation and any subsequent repairs. Since the serrated profile element is firmly embedded in the concrete, replacement or maintenance is complex and costly. Furthermore, polymer concrete is susceptible to cracking and spalling under intensive mechanical stress, which can impair the long-term functionality and load-bearing capacity of the system. Other drainage systems with a serrated profile element are known from DE 20 2009 016 877 U1 and DE 20 2016 105 078 U1.

[0006] The object of the present invention is to provide a drainage system which, compared to the prior art, allows for simpler installation, maintenance and / or replacement of the comb profile element, while at the same time offering improved stability and load-bearing capacity.

[0007] The problem is solved by the features of claim 1. Preferred embodiments of the invention are disclosed in the dependent claims.

[0008] The invention relates to a drainage system for installation in a building floor, in particular a concrete floor, comprising at least one serrated profile element. The serrated profile element consists of a profile base from which comb-like ribs with intermediate grooves project, extending in a longitudinal direction of the system. According to the characterizing part of claim 1, the following measures are taken to enable simpler installation, maintenance, and / or replacement of the serrated profile element compared to the prior art: The drainage system has at least one channel body in the interior of which the serrated profile element is arranged as an insert. The drainage system according to the invention is therefore composed of two parts: the serrated profile element and the channel body, which encloses the serrated profile element. The channel body can be fastened to the building floor by means of at least one fastening anchor, in particular a fastening screw.

[0009] According to the invention, the advantages of a space-saving serrated profile element are utilized. Furthermore, the drainage system according to the invention—in contrast to the direct integration of the serrated profile element, made of polymer concrete, for example, into the concrete—offers the advantage of a modular design. In this design, the serrated profile element, as a separate insert within the channel body, simplifies maintenance and allows for easy replacement. In the event of wear or damage, only the serrated profile element needs to be replaced, while the channel body remains intact. This results in cost savings and increased flexibility of the drainage system.

[0010] In one specific embodiment, a targeted material selection is made, with the channel body being manufactured from metal, while the serrated profile element is cut from a continuous plastic part produced in an extrusion process. The combination of a metal channel body and a plastic serrated profile element results in a stable and durable drainage system. The metal channel body protects the system against mechanical stress, while the plastic insert is lighter and more cost-effective. Furthermore, the material separation facilitates the replacement of individual parts and reduces the overall system weight.

[0011] In cross-section, the channel body can be designed with a base and side walls extending upwards from it, while the serrated profile element can almost completely fill the interior space bounded by the base and side walls. Compared to simply casting the serrated profile element into the concrete slab, the channel body design with a base and extended side walls results in a more robust enclosure and improved protection for the serrated profile element. This structure ensures more efficient load transfer to the channel body and better protects the serrated profile element from external influences. The serrated profile element is preferably made of solid plastic.

[0012] For secure positioning within the channel body, the serrated profile element can rest with its profile base over a large area on the channel body base. The serrated profile element can be attached to the profile base using any suitable joining device. Simple installation is ensured when the serrated profile element is attached to the channel body base with an interlayer of adhesive (i.e., with a material bond). The large-area contact of the serrated profile element on the channel body base, optionally secured by the adhesive layer, increases the system's stability. Compared to direct embedding in concrete, this large-area contact of the serrated profile element on the channel body base, supported by the adhesive layer, prevents displacement and provides the serrated profile element with additional stability.The adhesive layer also dampens mechanical stresses and enables a firmer, low-vibration connection, which improves the service life and functionality of the system.

[0013] In the assembled position, each of the channel body side walls can extend beyond the serrated profile element by an overlap in the system's vertical direction. The overlapping edge of the channel body side wall forms an edge protector for the serrated profile element. This edge protection effectively safeguards the serrated profile element from lateral wear and tear, which is difficult to guarantee when casting it directly into concrete. This edge protection extends the service life of the serrated profile element, particularly in high-traffic areas, and thus reduces maintenance costs in the long term.

[0014] The channel body can be formed from a sheet metal blank using a sheet metal forming process. However, for ease of manufacturing, it is preferable for the channel body's side walls and bottom to be constructed from individual sheet metal parts that are welded together. The channel body bottom can also be part of a mounting leg. Viewed in a transverse direction, this mounting leg projects beyond the respective channel body side wall on both sides by an overlap. Each mounting leg projection can be anchored to the building foundation using at least one fixing screw. The construction of the channel body's side walls and bottom, consisting of welded sheet metal parts, as well as the overlapping mounting legs, ensures a high load-bearing capacity of the drainage system.The fastening leg provides additional stability and enables secure anchoring in the building floor, making the drainage system suitable for heavy loads and increasing its durability.

[0015] In a single installation, several channel bodies are installed one after the other in the building floor along the system's longitudinal axis. Especially when the channel bodies are made of metal, the respective edge of each channel body, running in the system's longitudinal direction, can serve as a connecting element for butt welding between adjacent channel bodies. This strong and load-bearing welded connection between adjacent channel bodies increases stability and improves sealing without the need for additional mechanical fasteners. Therefore, no complex interlocking contour, such as for a push-fit connection, is required at the channel body edges. The ability to connect channel bodies along the system's longitudinal axis using butt welding allows for flexible expansion of the drainage system.

[0016] An embodiment of the invention is described below with reference to the accompanying figures.

[0017] They show: Fig. 1 to 3 different views illustrating the construction and installation of the drainage system according to the invention.

[0018] In the Fig. 1 is, in a cross-sectional view, a dimension that points in a longitudinal direction x of the system ( Fig. 3) Extending drainage system 1 is shown. The drainage system 1 is constructed in two parts, consisting of a metal channel body 3 and a comb profile element 5. The channel body 3 has a channel body base 7 and channel side walls 9 extending from it. These are welded vertically to the channel body base 7 as strip-shaped flat steel parts. The channel body base 7 is also part of a horizontal mounting leg 11, which projects laterally beyond each of the channel body side walls 9 on both sides, transverse to the longitudinal extent of the drainage system 1 (i.e., in the system transverse direction y), with a mounting leg overhang s. A screw hole with a mounting screw 13 inserted therein is formed in each of the mounting leg overhangs s, which are embedded in a concrete base 14 ( Fig. 2 or Fig. 3) can be dowelled.

[0019] The channel body bottom 7 and the raised channel body side walls 9 define an interior space which is located in the Fig. 1 is completely filled with the comb profile element 5, which is positioned as a separate insert in the interior of the channel body. The comb profile element 5 has a closed-surface profile base 15 ( Fig. 2) and projecting webs 17 in the vertical direction z of the system with intermediate grooves 19 extending in the longitudinal direction x of the system. In the Fig. In the assembly position shown in 1, the comb profile element 5 with its profile base 15 rests over a large area on the channel body base 7, with an intermediate layer of material only in the Fig. 2. The adhesive layer 21, indicated, is used to bond the serrated profile element 5 to the channel body 3. Each of the channel body side walls 9 projects beyond the serrated profile element 5 with its upper edge 23 in a system vertical direction z by an excess m, so that the respective upper edge 23 forms an edge protection for the serrated profile element 5.

[0020] In the Fig. 2 or Fig. Figure 3 shows the drainage system in an installation position in which the channel body 3 is installed in a mounting recess 25 in the concrete slab 14. The channel body 3 rests with its fixing leg 11 on a backing mortar 27. For suitable height adjustment, the channel body 3 is pressed into the still-damp backing mortar 27. In addition, the Fig. 3 of the channel body 3 are anchored to the concrete floor 14 via the fastening screws 13. This results in a height-correct and stable fixation of the channel body 3 in the concrete floor 14. In the Fig. 2 or Fig. For clarity, the surface covering layer 3 is not shown. The surface covering layer covers the fastening leg 11 and is flush with the upper edge 23 of the channel body 3.

[0021] The drainage system 1 installed in the concrete floor 14 comprises a multitude of channel bodies 3 arranged one behind the other in the system's longitudinal direction x. These can be welded together at their opposing end edges 29 in a force-transmitting manner. After the channel bodies 3 have been fixed in the concrete floor 14, the respective serrated profile element 5 is inserted. For this purpose, the adhesive layer 21 is first applied to the bottom 7 of the channel body, as shown in the Fig.2 is indicated. Subsequently, the comb profile element 5 is inserted into the channel body 3. Reference symbol list 1 Drainage system 3 channel bodies 5 Kammprofil element 7 Channel body bottom 9 Channel body side wall 11 Mounting legs 13 Mounting screw 14 Building floor 15 profile floor 17 Bridge 19 groove 21 Adhesive layer 23 Top edge 25 Mounting recess 27 Underlay mortar 29 Channel body edge excess s mounting leg overhang

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