EP2305905A1 - Floor drain with variable height - Google Patents

Abstract

The drain (1) has an immersion pipe (2) inserted into a cup-like drain housing (1.1) via a supply opening (1.3) and defining an odor trap with the housing. A shell or cup-like bottom part (1.2) is connected with drain housing in height-adjustable and liquid-tight manner. The immersion pipe is shortened for reducing an axial length by separating an immersion pipe section (2.2). The bottom part and the housing include threads that are screwed with each other. An annular groove is provided in the housing. A seal is inserted in the annular groove.

Description

The invention relates to a sequence, in particular for floor-level showers, with a cup-shaped drain housing having a cup-shaped or cup-shaped, connection piece-free bottom part, a laterally arranged connection piece and at its top an inlet opening, and a dip tube, which via the inlet opening in the drain housing can be used and defines a smell trap with this.

Such a procedure is for example from the DE 20 2005 012 802 U1 or the DE 20 2005 017 965 U1 known.

The space available for the construction of a floor-level shower in a bathroom floor or producible space for receiving a odor trap floor drain housing is usually limited. Because of the concrete floor or the concrete ceiling below the shower should not be overly broken or weakened for reasons of security and / or fire safety. Furthermore, there is a desire for low screed heights, especially in the field of old building renovation. Therefore, numerous relatively flat floor drains with odor trap have already been developed.

In many cases, however, a sufficiently deep installation space for receiving a floor drain with integrated odor trap is available, so that then there is the possibility of relatively large dimensions of the sealing water level in the odor trap.

The present invention has for its object to provide a drain with odor trap especially for floor-level showers, which can be flexibly adapted to different installation situations, so that its height, sealing water level and drain performance is variable.

This object is achieved by a sequence with the features of claim 1.

The sequence of the invention is characterized in that the bottom part is height-adjustable and liquid-tightly connected to the drain housing.

The dip tube is preferably formed so that it must be cut to reduce its axial length by separating a pipe section. The removable from the drain housing dip tube, which is preferably made in one piece, can be shortened if necessary to the required length, for example by means of a saw.

The advantage of the sequence according to the invention is, in particular, that it does not have fixed parameters with regard to the installation height, sealing water level and drainage capacity, as in the case of a conventional drainage, but can be set variably in a simple manner in this regard in the field. The setting can be made depending on the need in each case in the foreground. If, for example, the lowest possible height (total height) is required, this can be done by corresponding height adjustment of the bottom part relative to the drain housing can be realized. The axial length of the dip tube is then adaptable by shortening it to the set total height, in which respect a maximum total height of the drain maximized sealing water level or a maximized drainage performance or a compromise between maximized sealing water level and maximized drainage capacity can be adjusted. The setting of the sequence according to the invention is carried out as a function of the parameter which is just important in the respective situation.

In order to enable a simple, continuous height adjustment of the bottom part relative to the drain body, a preferred embodiment of the sequence according to the invention provides that the bottom part and the drain body are each provided with a thread, which are screwed together.

The screw thread between the bottom part and drain housing is preferably designed so that it has a sealing function with respect to liquids without the use of an additional seal. Conveniently, however, may be arranged according to an alternative embodiment between the bottom part and the drain housing, an annular seal and / or the bottom part have an annular sealing surface defining collar.

As an alternative to the formation of a screw thread between drain housing and the bottom part, another advantageous embodiment of the invention provides that formed on the bottom part and the drain housing locking elements are, so that the bottom part is adjustable relative to the rest of the drain housing stepwise in height. In this alternative embodiment of the process according to the invention, an annular seal is preferably arranged between the bottom part and the drain housing.

To be able to adjust the length of the dip tube also in a simple manner, provides a further preferred embodiment of the sequence according to the invention that the dip tube has on its outside a plurality of axially spaced annular grooves and / or annular projections. The annular grooves or annular projections serve as a guide for a cutting tool, such as a saw, and facilitate the production of a perpendicular to the vertical axis of the dip tube extending cutting plane, so that the annular lower edge of the shortened dip tube is arranged substantially horizontally in its installed position.

According to a further preferred embodiment of the sequence according to the invention, it is provided that the dip tube with the bottom part and / or the drain housing defines an annular drainage channel whose cross-sectional width increases from bottom to top. This embodiment promotes reliable liquid drainage and also counteracts unwanted suction of the sealing water in the odor trap at a negative pressure in the sewer connected to the drain.

A further advantageous embodiment of the sequence according to the invention provides that the drain housing inside a transverse to the longitudinal central axis of the connecting piece extending, vertically projecting overflow edge, viewed transversely or at right angles to the longitudinal central axis of the connecting piece has a height offset. The overflow edge forms a barrier water barrier, which limits a drainage of sealing water due to a suction effect in the connected sewer line and thus ensures function of the odor trap despite the suction effect.

The height offset influences the direction of flow of water flowing out of the drain, in particular the direction of flow of a possibly forming water-air mixture. The water-air mixture is thereby passed into the region of the lowest point of the barrier barrier (overflow edge), so that an air gap or air channel is formed, which cancels the vacuum in the sewer line and thus prevents loss of the blocking effect of the odor trap.

With regard to influencing the flow direction of the effluent from the drain water or the water-air mixture, it is also advantageous if according to a further embodiment of the invention at the overflow edge (barrier barrier) at least one extending in the direction of dip tube separating or bulkhead is formed. Preferably, the partition (bulkhead) is formed in the region of the height offset to the overflow edge and extends substantially vertically. When water flows due to a caused by a vacuum in the sewer suction effect the partition wall causes a separation of the effluent water from the water-air mixture or of the water in the stream forming air duct so that more water is retained in the drain housing by the partition.

A further advantageous embodiment of the process according to the invention consists in that, seen in the direction of flow, a flow channel enlargement is formed in front of the overflow edge which tapers towards the overflow edge. The drainage channel extension is preferably part of a horizontal, disc-shaped drainage passage section delimited by the dip tube and the drainage housing, the volume of this disc-shaped drainage passage section being greater than or equal to the volume within the dip tube, passing through an upper horizontal plane tangential to the overflow edge and through one lower, tangential to the lower end of the dip tube extending horizontal plane is limited. By this configuration it is ensured that the relatively small volume of water within the dip tube is partially or completely absorbed in the volume of the horizontal drain channel portion at a suction due to a vacuum in the connected sewer and can flow back to the absence of the vacuum, so that always enough sealing water in the Drain remains and thus the blocking function of the odor trap is ensured. The drainage channel extension or the said volume of the horizontal drainage channel disk section represent a suction protection, which makes it possible to form the drain particularly flat, so that it has a relatively low overall height.

Further preferred embodiments of the process according to the invention are specified in the subclaims.

Fig. 1

eine vertikale Schnittansicht eines erfindungs- gemäßen Ablaufs;

Fig. 2

eine vergrößerte Detailansicht der Fig. 1;

Fig. 3

ein zweites Ausführungsbeispiel eines erfindungs- gemäßen Ablaufs in vertikaler, perspektivischer Schnittansicht; und

Fig. 4

eine weitere vertikale Schnittansicht des Ablaufs der Fig. 3.

The invention will be explained in more detail with reference to a drawing illustrating several embodiments. Show it:

Fig. 1

a vertical sectional view of an inventive process;

Fig. 2

an enlarged detail view of the Fig. 1 ;

Fig. 3

A second embodiment of an inventive sequence in a vertical, perspective sectional view; and

Fig. 4

another vertical sectional view of the flow of the Fig. 3 ,

The sequence shown in the drawing 1, 1 'is intended for installation in a screed or concrete floor, for example, to produce a drain for a floor-level shower.

The drain 1, 1 'comprises a pot-shaped housing 1.1, which has a cup-shaped or cup-shaped bottom part 1.2 and at its top an inlet opening 1.3. The inlet opening 1.3 is formed in a cover part 1.4, which is liquid-tightly connected to the cup-shaped housing 1.1, preferably welded or glued. The bottom part 1.2 has no connection piece for connecting a sewer pipe (not shown). Rather, a corresponding connection piece 1.5 is arranged laterally on the drain housing 1.1. The connection piece 1.5 is over a welding or adhesive connection with the drain housing 1.1 and the cover part 1.4 connected.

The drain 1, 1 'further comprises a dip tube 2, which is insertable via the inlet opening 1.3 in the drain housing 1.1 and defines a smell trap with this. The dip tube 2 does not touch the bottom part 1.2 in the installed state. Rather, the dip tube 2 protrudes in the mounted state freikragend, with a radial distance in the cup-shaped bottom part 1.2, wherein the lower end of the dip tube 2 ends at a distance from the bottom of the bottom part 1.2. The inlet opening 1.3 is viewed in vertical section stepped. It comprises an upper, annular peripheral shoulder 1.31 into which a sealing foil (not shown) with a gradient in the direction of dip tube 2 can extend. For example, the sealing film may be in the form of a first liquid sealant, i. be applied to a so-called liquid film. Below the upper paragraph 1.31 is a second, also annular peripheral paragraph 1.32 formed in the cover part 1.4 of the process. The second paragraph 1.32 serves the positive reception of a frame or adapter (not shown), in turn, a drain grate is used.

Below the second paragraph 1.32, a cylindrical support surface is 1.33, which serves to hold the dip tube 2. The removable from the drain body 1.1 dip tube 2 has near its upper end an externally arranged annular groove 2.3 for receiving a sealing ring. The inserted into the annular groove 2.3 sealing ring 2.4 causes a frictional connection between the dip tube 2 and the drain housing 1.1 or its cover part 1.4.

The bottom part 1.2 of the drain 1, 1 'has a substantially planar bottom 1.21 with a conical, projecting into the dip tube 2 bottom portion 1.22. The conical bottom section 1.22 improves the deflection of the draining liquid in the region of the bottom 1.21. As a result, a backflow of the outflowing liquid is counteracted at relatively high liquid supply and thus improves the drainage performance.

The bottom part 1.2 of the process is height-adjustable connected to the housing 1.1. For this purpose, the bottom part 1.2 and the drain body 1.1 each have a circular-cylindrical portion 1.11, 1.23, on which threads screwed together 1.12, 1.24 are formed. In the in the FIGS. 1 and 2 illustrated embodiment, the cup-shaped bottom part 1.2 an internal thread 1.24 and the bottom part associated circular cylindrical section 1.11 of the drain housing 1.1 an external thread 1.12.

The threaded connection between the bottom part 1.2 and drain housing 1.1 according to the FIGS. 1 and 2 is preferably formed self-sealing, so that there is no liquid-tight connection without an additional sealant, which also allows height adjustment of the bottom part 1.2 relative to the drain body 1.1.

Another possibility for the realization of a liquid-tight connection, the height adjustment of the Bottom part opposite to the drain housing is allowed in the Figures 3 and 4 shown. The embodiment shown there differs from the embodiment according to the FIGS. 1 and 2 in that on the bottom part 1.2 and the drain body 1.1 locking elements are formed so that the bottom part 1.2 relative to the drain body 1.1 can be adjusted stepwise in height.

The drain housing 1.1 has a cylindrical, preferably circular cylindrical section 1.11, in which the cup-shaped bottom part 1.2 is inserted. On the inner circumference of the cylindrical housing portion 1.11 an annular groove is formed 1.13. Into the annular groove 1.13, a seal 1.14 in the form of an O-ring made of rubber or the like is used, wherein the seal 1.14 protrudes radially inwardly relative to the annular groove 1.13. The cup-shaped, likewise preferably circular cylindrical base part 1.2 has on its outer circumference a plurality of mutually axially spaced annular grooves 1.27, which are assigned to the annular groove of the drain housing 1.1 1.13. The annular grooves 1.27 of the bottom part 1.2 are equally spaced from each other. In the illustrated embodiment, the bottom part 1.2 three annular grooves 1.27. It is understood, however, that the height adjustment of the bottom part 1.2 according to the invention is also realized if the bottom part 1.2 would have only two annular grooves 1.27. Likewise, the bottom part 1.27 may also have more than three annular grooves 1.27. The annular groove 1.13 of the drain housing 1.1 with the annular seal used therein 1.14 and the grooves 1.27 of the bottom part 1.2 represent locking elements, wherein the seal 1.14 depending on the set position of the bottom part 1.2 relative to the drain body 1.1 in one of the grooves 1.27 of the bottom part 1.2 positively engages. On the cylindrical portion of the drain housing 1.1 1.11 (not shown), a strap, by means of which the bottom part 1.2 is fixed by clamping from the outside to the drain body 1.1. The cylindrical portion 1.11 of the drain body 1.1 has a circumferential, radially inwardly projecting shoulder 1.15, on the inside of which the sealing ring 1.14 retaining annular groove is formed 1.13. The peripheral outer edge 1.16 of paragraph 1.15 serves as an axial stop for the strap.

The thickness of the side wall of the cup-shaped bottom part 1.2 according to Figures 3 and 4 increases from the top to the bottom 1.21. The bottom part 1.2 thus limits a conically tapering towards the bottom 1.21 cavity.

The dip tube 2 is in one piece (integrally) formed in the illustrated embodiments. In order to adjust the length of the dip tube 2 to the adjusted via the height adjustment of the bottom part 1.2 total height of the sequence 1, 1 'or to adjust the sealing water level or the drainage capacity in response to the requirements set to the drain, the dip tube 2 is unique to the required length shortened. The shortening of the dip tube 2 can be carried out by means of a saw or a knife.

At the in Fig. 1 illustrated embodiment, the dip tube 2 a plurality of axially spaced circumferential projections (annular projections) 2.5. The projections 2.5 are equally spaced from each other and serve as a guide for a cutting tool if the dip tube 2 is shortened.

In order to set a maximum sealing water level, the dip tube 2 is used uncut in the drain housing 1.1. By adjusting the height of the bottom part 1.2 relative to the drain housing 1.1 and the immersion tube 2 inserted therein, the drainage performance of the process can be varied. A reduction in the distance between the lower edge of the dip tube 2 and the bottom 1.21 of the bottom part 1.2 leads to a reduction of the annular cross-sectional width and thus to a reduction in the drainage performance of the process. The parameters installation height and sealing water level can be set separately from each other in the process according to the invention. The drainage performance results from the selected setting (constellation).

The lower section 2.2 of the dip tube 2 is substantially cylindrical, while the upper section 2.1 widens conically or funnel-shaped toward its upper end. The dip tube 2 defines with the bottom part 1.2 and the drain body 1.1 an annular drain channel (annulus) 4, the cross-sectional width increases from bottom to top.

In the cover part 1.4 of the drain body 1.1 a paragraph 1.32 having recess is formed. In the recess, which is preferably circular cylindrical, a grate (not shown) or a grate-bearing attachment (not shown) can be used. The inner edge of paragraph 1.32 is at least one Partial circumference of the opening 1.3 formed beveled. The bevel 1.34 serves as a support for the dip tube 2, the flange-like end of which has on the outer circumference a chamfer complementary to the bevel formed.

This in Fig. 1 illustrated drain housing 1.1 has a transverse to the longitudinal center axis of the connecting piece 1.5 extending overflow edge (barrier water barrier) 1.6. Before the overflow edge - seen in the discharge flow direction - a flow channel extension 1.7 is formed, which narrows towards the overflow edge 1.6 (see. Fig. 1 ). The flow channel extension 1.7 is at least partially formed by a bead formed in the drain housing 1.1 on the inside.

The drainage channel extension 1.7 is part of a horizontal, disc-shaped outlet channel section 1.8, which is bounded by the dip tube 2 and the drain housing 1.1. The volume of this disc-shaped discharge channel section is greater than or equal to the volume within the dip tube 2, which is bounded by an upper horizontal plane H1 extending tangentially to the barrier water barrier 1.6 and by a lower horizontal plane H2 extending tangentially to the lower end of the dip tube 2.

Also in the Figures 3 and 4 illustrated drain housing 1.1 has a transverse to the longitudinal center axis of the connecting piece 1.5 extending overflow edge (barrier water barrier) 1.6. In contrast to the embodiment according to Fig. 1 has the overflow edge 1.6 transversely or perpendicular to the longitudinal center axis of the connecting piece 1.5 considered a height offset 1.61 (see. Fig. 3 ). In the embodiment according to the Figures 3 and 4 the overflow edge 1.6 is formed lower in its middle section 1.62 than in its sections 1.63, which terminate on the side walls 1.17 of the drainage housing 1.1, which limit the outlet channel leading to the connection piece 1.5. The height offset 1.61 is at least 5%, preferably at least 8% of the inner diameter of the connecting piece 1.5.

At the barrier barrier walls (bulkheads) 1.18 are formed, which extend in the direction dip tube 2 and on the cylindrical portion of the drain housing 1.1 1.1, 1.1 serves to accommodate the bottom part, end. The partitions 1.18 are formed in the region of the height offset 1.61 to the overflow edge (barrier water barrier) 1.6 and the bottom of the drain housing 1.1 and extend substantially vertically and substantially parallel to each other. The height of the partitions 1.18 corresponds essentially to the greatest height of the overflow edge 1.63. The inlet openings 1.3 facing end faces 1.19 of the bulkheads 1.18 are formed chamfered, the end faces 1.19 fall towards the bottom part 1.2.

In Fig. 4 the dashed line H2 denotes the dip tube lower edge. The lower edge of the dip tube defines the air passage level of the drain in the case of a water suction caused by vacuum in the sewer. The upper dashed line H1 corresponds to the water level in the drain housing 1.1 before a water suction related disturbance, while the dashed line labeled H3 represents the water level after such a disturbance. It can be seen that the inventive process in relatively flat design provides a high Rücksaugsicherheit.

The embodiment of the present invention is not limited to the above-described embodiments. Rather, numerous variants are possible, which make use even in deviating from the embodiments of the invention specified in the appended claims invention.

Claims (15)

Drain (1, 1 '), in particular for floor-level showers, with a cup-shaped drain body (1.1) having a shell or cup-shaped, connection piece-free bottom part (1.2), a laterally arranged connection piece (1.5) and at its top an inlet opening (1.3 ), and a dip tube (2) which is insertable via the inlet opening (1.3) into the drain housing (1.1) and defines a trap with this, characterized in that the bottom part (1.2) height adjustable and liquid-tight with the drain housing (1.1) connected is. Drain according to claim 1,
characterized in that the dip tube (2) is formed so that it must be reduced to reduce its axial length by separating a dip tube section (2.2). Process according to claim 1 or 2,
characterized in that the bottom part (1.2) and the drain body (1.1) are each provided with a thread (1.12, 1.24), which are screwed together. Process according to claim 1 or 2,
characterized in that formed on the bottom part (1.2) and the drain housing (1.1) locking elements (1.13, 1.27) are, so that the bottom part (1.2) relative to the drain housing (1.1) is adjustable in height in a stepwise manner. Process according to one of claims 1 to 4,
characterized in that between the bottom part (1.2) and the drain housing (1.1) an annular seal (1.14) is arranged, wherein preferably an annular groove (1.13) on the drain housing (1.1) is formed, in which the seal (1.14) is inserted. Process according to one of claims 1 to 5,
characterized by a strap, by means of which the bottom part (1.2) to the drain housing (1.1) is clamped fixable. Process according to one of claims 1 to 6,
characterized in that the dip tube (2) has a plurality of axially spaced annular grooves and / or annular projections (2.5). Process according to one of claims 1 to 7,
characterized in that the dip tube (2) with free radial projection protrudes into the bottom part (1.2) of the drain housing (1.1), so that the dip tube (2) and the bottom part (1.2) of the drain housing (1.1) together define an annular space. Process according to one of claims 1 to 8,
characterized in that the dip tube (2) with the bottom part (1.2) and / or the drain housing (1.2) defines an annular discharge channel (4) whose cross-sectional width increases from bottom to top. Process according to one of claims 1 to 9,
characterized in that the drain housing (1.1) inside a transverse or perpendicular to the longitudinal central axis of the connecting piece (1.5) extending, vertically projecting barrier barrier (1.6), which preferably has a height offset (1.61). Drain according to claim 10,
characterized in that at least one in the direction of dip tube (2) extending partition wall (1.18) is integrally formed on the barrier water barrier (1.6). Drain according to claim 11,
characterized in that the partition wall (1.18) in the region of the height offset (1.61) is integrally formed on the barrier water barrier (1.6) and extends substantially vertically. Process according to one of claims 10 to 12,
characterized in that the height offset (1.61) of the barrier water barrier (1.6) at least 5%, preferably at least 8% of the inner diameter of the connecting piece (1.5). Process according to one of claims 10 to 13,
characterized in that seen in the direction of drainage in front of the barrier barrier (1.6) a drainage channel extension (1.7) is formed, which tapers to the barrier water barrier (1.6). Process according to one of claims 1 to 14,
characterized in that the bottom part (1.2) has a conical bottom portion (1.22) projecting towards the dip tube (2) and is surrounded by the dip tube.

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