ES2381807T3 - Drain, especially for sanitary devices - Google Patents

Abstract

The drainage has a housing (2), in which an inlet channel (5) and a discharge collecting channel (12) are formed. The inlet channel and the discharge collecting channel are separated from each other by a retention area (10) for forming a waste trap. A housing cover (6) is formed at the upper side of the housing, which covers a central area of the housing. The inlet channel extends between an outer wall (7) of the housing and a separating wall (8) arranged within the housing. An independent claim is also included for a sanitary tub with a tub body.

Description

Drain, especially for sanitary devices.

The invention concerns a drain, especially for sanitary devices, with a housing, in which an inlet channel and a drain collecting channel are formed within the housing that are separated from each other by a containment zone to form a siphon , in which a cover of the latter is provided on the upper side of the housing that covers a central area of the housing and that limits an overflow section that joins the containment area with the drain collecting channel, in which the channel The entrance extends between an outer wall of the housing and a partition arranged inside the housing, and in which the overflow section extends vertically beyond the upper edge of the input channel. The drain is specially designed for shower trays, bathtubs or swirling buckets. In addition, the drain can also be used as a floor drain, for example in sanitary enclosures.

In order to meet the increased demands imposed on the design and functionality in sanitary pails, it is hoped that such sanitary devices have a construction height as small as possible. Thus, shower trays are known that have only a small threshold with respect to an adjacent floor surface or are completely integrated into a floor surface. The corresponding cuvettes not only have a particularly attractive high-value optics, but also lead to a net gain in comfort. In particular, such cuvettes are also suitable for the disabled, since a high threshold does not have to be exceeded. The drains provided for such buckets have to be made as low as possible so that they do not have to be inserted deeply into a floor surface. At the same time, there is precisely in flat shower trays the problem that overflow must also be avoided, so that the drain must make an especially high flow possible.

In bathtub drains and swirling buckets, aspirations are also presented to the lowest possible construction of the drainage in order to meet the increased design requirements. Finally, in case the drain is used as a floor drain, a small construction height is also advantageous, since the drain must then be embedded less deeply into the ground.

A drain with the features of the preamble of claim 1 is already known from WO 2008/135704 A1. Starting from the inlet channel between the outer wall of the housing and a partition arranged inside the housing, the water first reaches the annular containment zone and then, after overflowing through a damming wall, it finally reaches the drain collecting channel, which is arranged within the annular containment zone. The water is then driven down and confined by means of a splice piece arranged below the drain. In this known embodiment, the fact that the centrally connected splice piece is disposed below the drain is disadvantageous, so that, at a predetermined embalming height, an even relatively large mounting depth results, even when the connection piece is present. initially a flat flow profile stretched in the sense of width.

EP 1 574 629 A1 is known as a drain for sanitary devices, especially shower trays, with the features of the preamble of claim 1, wherein an inlet channel, a containment zone and a drain collecting channel are arranged in series one after another. EP 1 574 629 A1 thus reveals the shape of a conventional siphon, where, due to the arrangement of the sections one after the other, the cross-sections of flow are limited and, therefore, the drainage capacity.

Document DE 20 2008 011 010 U1 is known as a drain for sanitary devices with a housing, where an inlet channel and a drain collecting channel are formed within the housing that are separated from each other by a containment zone for form a siphon This document deals with the problem of achieving an increased drainage capacity with a globally compact construction mode of the drain to make possible especially a use in flat shower trays. To achieve this, the drain has a central inflow channel from which the incoming water is first transferred to a siphon channel that is located outside inside the housing and forms a containment zone. Between the siphon channel and the inflow channel, a substantially annular drainage drain channel is formed from which water is drawn from the housing through an outlet opening. The containment zone and the drain collecting channel, which are both substantially annular shaped, together have relatively large flow cross sections, since, according to DE 20 2008 011 010 U1, the incoming water is first conducted out. The described drainage is characterized by very good drainage capacities along with a relatively small overall construction size. However, deriving from this there is still a need to further reduce the construction height of the drain.

Documents DE 201 01 787 U1, DE 10 2005 013 942 A1, EP 1 229 174 B1 and EP 1 798 352 A1 are known to have respective drains having a substantially vessel-shaped housing with a central inlet channel. The input channel transitions on the lower side of the housing to a containment area that concentrically surrounds the input channel. The water flowing through the drain finally arrives from the containment zone to an external drainage collector channel or directly to a drain fitting. Both the height of

Construction such as the flow that can be achieved are in need of improvements in these drains.

Given this background, the invention is based on the problem of indicating a drain with the characteristics described at the beginning that makes a particularly compact arrangement possible in a sanitary device, especially a shower tray.

The problem is solved according to the invention by means of a drain according to claim 1.

According to the invention, the outgoing water does not flow centrally, but does so by the edge of the drain. On the contrary, the central area of the housing is covered by a cover of said housing which limits according to the invention the flow paths formed within the housing. Therefore, in comparison with the embodiments known from the state of the art, there is the possibility of moving the flow paths upwards keeping the siphoning height constant, so that the drain protrudes less downward when it is arranged in a sanitary bucket . In a sanitary bucket, the body of the same usually has a depression with a drain opening in which the drain is arranged. In the drains known to the state of the art, the flow paths adjacent to an inflow channel are completely arranged outside the depression and the drain opening formed therein. The invention reveals in this context an advantageous approach, in which it is also intended to take advantage of the space within the depression for the formation of flow paths. Thus, it is provided according to the invention that the overflow section extends in a vertical direction beyond the upper edge of the inlet channel, that is, the upper edge of the outer wall. In particular, it can be provided that the height of the upper edge of the inlet channel corresponds approximately to the reservoir height of the containment zone. The embalming height and the height of the upper edge here refer to absolute values that must be determined, for example, from the lower side of the housing. As additional magnitude relevant for sizing, the siphoning height must be taken into account. The siphoning height indicates the difference in height by which the inlet channel is separated from the drain collecting channel in the containment zone. The siphoning height should usually be at least 25 mm, preferably at least 50 mm, in order to meet the corresponding industrial standards.

According to the invention, the containment zone is connected to the entrance channel through a ground side joint, the drain collecting channel being arranged between the entrance channel and the containment zone. Within the framework of this embodiment, the incoming water first arrives in the outer area of the housing to the inlet channel on the edge side and is then led inwards to the containment zone through the ground side junction before the Water finally reaches the drain collecting channel through the overflow section limited by the lower side of the housing cover.

In order to achieve as large global cross-sections as possible, it is provided according to an advantageous embodiment that the containment area and the drain collecting channel are separated from each other by a cylindrical dam wall.

To enable a simple manufacture of the drain and good flow properties, simple geometric structures are preferred. Thus, in a centrally arranged containment zone the drain collecting channel may be arranged in a ring shape around it. In particular, the containment zone and the drain collecting channel can be formed substantially with rotational symmetry with respect to an axis of vertical symmetry. Deviations from the symmetry of rotation are presented to the point that an outlet has yet to be provided for the water flowing through the drain. Thus, for example, the drain collecting channel can flow into a drain fitting that extends laterally out of the outer wall of the housing. In order to achieve a maximum flow, the drain fitting can first present from the drain collecting channel a large cross-section, for example rectangular, which is then narrowed until a circular shape is obtained, so that a standardized tubular connection piece can be fixed. Regardless of the drain fitting laterally taken out, the housing preferably has a substantially cylindrical outer shape.

Within the framework of the invention, the housing cover can be firmly and durably connected with the housing. However, the housing cover is preferably removably constructed to make cleaning and removal of fouling such as hairs possible. The housing cover can be immobilized for this, for example, by means of a tightening action or by means of a screw connection. Finally, it is also possible to immobilize the housing cover in the latter with the help of additional fasteners. Special advantages are also obtained in the context of the invention because, after removal of the housing cover, they can also be easily cleaned in the containment area and the drain collecting channel. The drain fitting adjacent to it and a drain pipe can also be reached through the drain collecting channel, whereby, in case of an obstruction, the hose of a high-pressure cleaning device or the like can be introduced. To avoid the flow reducing edges, the housing cover has a curved shape on its lower limiting side of the overflow section.

Within the scope of the invention, the housing cover can be visibly arranged in the assembled state of the drain. However, in order to achieve a particularly high quality appearance, an additional decorative cover which is seated on the housing and the cover thereof is provided according to a preferred embodiment of the invention. In particular, there is a need for accessible drainage areas in the assembled state to be provided with a

surface resistant and equipped with high quality. Particularly in sanitary pails made of enameled steel, this can be achieved when the decorative cover is of the same material. In addition, this results in an optimal integration of the drain into the overall appearance of the sanitary bucket. In order to keep the decorative cover on the housing, a stable support in its shape consisting of plastic, for example ABS, can be provided. The decorative cover and the support can be joined together, for example by means of a glued joint.

To allow the simplest and cheapest possible manufacture of the drain, it is composed, according to a preferred embodiment of the invention, based on different parts, especially plastic molded parts. It is thus possible to close the housing on its lower side by means of a separately manufactured housing bottom which, in the case of a manufacturing based on a thermoplastic synthetic material, can be welded or alternatively glued to the outer wall. The fixing of the drain to a drain opening of a sanitary tray is usually carried out with a clamping ring, which can be provided between the sanitary bowl and the clamping ring, on the one hand, and between the sanitary bowl and a support flange of the housing, on the other hand, a sealing gasket, for which, for example, an annular contour gasket is suitable.

The object of the invention is also a sanitary cuvette with a cuvette body having a drain opening in a depression, the drain described above being arranged in the drain opening. So that the drain is not perceived as annoying when using the sanitary cuvette and optimally accommodates the total optical appearance, the upper side of the drain is preferably approximately beams with the surface of a flat area of the bucket body adjacent to the depression . Depression usually forms a 15 mm to 45 mm entree. According to the invention, a part of the flow channels extends from the drain opening into this depression, thereby reducing the flown projection of the drain from the bottom side. Even with a siphoning height of 50 mm it is possible here in the context of the invention that the drain protrudes downward from the lower edge of the depression by less than 70 mm, preferably less than 60 mm. As explained above, the housing preferably has a substantially cylindrical outer contour, that is, circular cylindrical. Thanks to the arrangement of an additional decorative cover, an adaptation of almost any kind to a depression shaped in another way, for example a square depression, is possible here.

In the following, the invention is explained by means of a drawing that represents only one embodiment. They show:

Figure 1a, a perspective view of a drain disposed in a drain opening of a sanitary bucket;

Figure 1b, the arrangement according to Figure 1a with a decorative cover removed;

Figure 2, a vertical section along the line A-A of Figure 1a;

Figure 3, a vertical section along the line B-B of Figure 1a;

Figure 4, the arrangement according to Figure 1a with a perspective view from below; Y

Figure 5, a flat shower tray with the drain shown in Figure 1a.

Figure 1a shows in a fragmentary view a drain that is installed in a depression 1 of a body 2 of a sanitary bucket. In the assembled state of the drain, only a decorative lid 3 is visible on the upper side of the sanitary tray, which is made with the surface of a flat area - adjacent to the depression 1 of the body 2 of the sanitary tray and which, likewise that this body 2 is made of enameled steel. Between the decorative cover 3 and the edge of the depression 1 a groove is formed that extends around the perimeter and through which water can reach a housing 4 of the drain.

According to FIG. 1b, it can be seen that the outgoing water in a radially outer area of the housing 4 reaches an inlet channel 5 that extends at least about a part of the perimeter of the circular cylindrical housing 4 in its outer contour. It can also be seen that on the upper side of the housing 4 there is a cover 6 of said housing covering a central area of the housing 4, whereby the central area of the housing 4 with the cover 6 thereof arranged in its upper side extends vertically beyond the edge of the inlet channel 5, that is, at the bottom of the depression 1, and into the area of the depression 1.

More details of the drain according to the invention can be deduced from the sectional representations of Figure 2 and Figure 3. Thus, the inlet channel 5 extends from its upper edge between an outer wall 7 of the housing 4 and a partition 8 arranged inside the housing 4. The incoming water passes from the inlet channel 5, through a joint 9 on the ground side, to a central containment zone 10 which is radially limited by a circular cylindrical dam wall 11 and which is separated by it of a peripheral drainage channel 12. When water flows next, the containment zone 10, which forms a siphon, is swept at the upper end of the dam wall 11, whereby water can be discharged there through a overflow section 13 linking the drain collecting channel 12 with the containment zone 10.

When no more water continues to flow, the upper edge of the dam wall 11 defines the dam height

inside the drain.

Essential to the invention is especially the fact that the central area of the housing 4, which is covered on its upper side by a cover 6 thereof, extends to the interior of the depression 1, limiting the cover 6 of the housing to the Overflow section 13 up. Since the flow paths adjacent to the inlet channel 5 inside the housing extend to the interior of the depression 1, the entire drain protrudes only slightly downwards with respect to the body 2 of the bowl. Thus, in the embodiment shown, it is possible to achieve, with a siphoning height hS of 50 mm and a hT setback of 20 mm of the depression 1 with respect to the adjacent areas of the body of the bucket, that the entire drain protrudes towards only 60 mm below with respect to depression 1. The height of the upper edge of the inlet channel corresponds here approximately to the damming height of the containment zone.

The sectional representations of FIG. 1 and FIG. 3 allow further deducing that the fastening of the housing 4 to the body 2 of the sanitary tray is carried out by means of a clamping ring 14, a contour joint 15 being inserted for sealing and protection against excessive mechanical loads. Finally, it can also be seen that the decorative lid 3 formed by enameled steel is of relatively thin construction and is secured on the housing 4 by means of a support 16 stable in its shape and made of plastic.

A comparative consideration of Figures 1b, 2 and 4 shows that the housing 4 has a substantially circular cylindrical outer contour, the housing 4 being closed on the lower side by a housing bottom 17 seated on the outer wall 7. The formation of A separate bottom 17 of the housing, which can be glued or welded with the outer wall 7, makes possible a cheap and simple manufacture of the different plastic parts.

In order to be able to clean the drain more easily, the support 16 with the decorative cover 3 glued thereon and the cover 6 of the housing have been easily disposed on said housing 4. Apart from tightening, it can be provided for this also a bolted joint. After removing the decorative cover 3 and the cover 6 of the housing, the containment area 10 and the drain collecting channel 12 can be easily cleaned and soiling such as hairs or other deposited materials can be removed.

The drain collecting channel 12 arranged in the form of a ring around the containment zone 10 flows into a drain fitting 18 that has been pulled out laterally out of the outer wall 7 of the housing 4. To achieve, despite the small height , a large flow, the drain fitting has a wide rectangular cross-section. A reducing part 19 that transforms the rectangular cross-section of the drain fitting 18 into a round cross-section is directly attached to the outer wall 7 of the housing, whereby the connection with a standardized tubular joint is made possible. Regardless of the transfer to the drain fitting 18, the drain collecting channel 12, like the containment zone 10 and the cover 6 of the housing, is substantially configured with revolution symmetry. The drain fitting 18, the reduction piece 19 and a drain pipe adjacent thereto are also accessible for cleaning purposes, for example with a tube cleaning spiral, when the decorative cap 3 and the lid 6 of the Case.

Figure 5 shows as an example a flat shower tray that is provided with the drain according to the invention.

Claims (17)

1. Drain, especially for sanitary devices, with a housing (4), in which an inlet channel (5) and a drain collecting channel (12) that are separated from each other are formed within the housing (4) by a containment zone (10) to form a siphon, in which a cover is provided on the upper side of the housing (4)

(6)

 of this one that covers a central area of the housing (4) and that limits an overflow section (13) that joins the containment zone (10) with the drain collecting channel (12), in which the inlet channel ( 5) extends between an outer wall (7) of the housing (4) and a partition (8) disposed within said housing (4), and in which the overflow section

(13)

extends in a vertical direction beyond the upper edge of the input channel (5), characterized in that the containment zone (10) joins the input channel (5) through a joint (9) on the ground side, being arranged the drain collecting channel (12) between the inlet channel (5) and the containment zone (10).

2.

Drain according to claim 1, characterized in that the height of the upper edge of the inlet channel (5) corresponds approximately to the damming height of the containment zone (10).

3.

Drain according to claim 1 or 2, characterized in that the lower side of the cover (6) of the housing is curved at least in certain sections to avoid flow reducing edges.

Four.

Drain according to any one of claims 1 to 3, characterized in that the containment zone (10) and the drain collecting channel (12) are separated from each other by a cylindrical dam wall (11).

5.

Drain according to any of claims 1 to 4, characterized in that the drain collecting channel (12) is arranged in a ring shape around the containment zone (10).

6.

Drain according to any one of claims 1 to 5, characterized in that the containment zone (10) and the drain collecting channel (12) are configured substantially symmetrically in rotation with respect to an axis of vertical symmetry.

7.

Drain according to any one of claims 1 to 6, characterized in that the drain collecting channel (12) flows into a drain fitting (18) that extends laterally outward from the outer wall (7) of the housing (4).

8.

 Drain according to any one of claims 1 to 7, characterized in that the housing (4) has a substantially cylindrical outer shape.

9.

Drain according to any of claims 1 to 8, characterized in that the cover (6) of the housing can be removed from said housing (4).

10.

Drain according to any one of claims 1 to 9, characterized by a decorative cover (3) that is seated on the housing (4) and the cover (6) thereof.

eleven.

 Drain according to claim 10, characterized in that the decorative cover (3) is held on the housing (4) by means of a support (16) stably provided.

12.

Drain according to any of claims 1 to 11, characterized in that the housing (4) is closed on its lower side by a housing bottom (17) seated on the outer wall (7).

13.

Drain according to any one of claims 1 to 12, characterized in that the siphoning height (hS) amounts to at least 25 mm, preferably at least 50 mm.

14.

Sanitary bucket with a bucket body (2) having a drain opening in a depression (1), characterized by a drain according to any one of claims 1 to 13 which is disposed in the drain opening.

fifteen.

Sanitary bucket according to claim 14, wherein the upper side of the drain is approximately beams with the surface of a flat area - adjacent to the depression (1) - of the body (2) of the bucket.

16.

 Sanitary tray according to claim 15, wherein the depression (1) is tucked between 15 mm and 40 mm with respect to the area adjacent to the depression.

17.

 Sanitary bucket according to any of claims 14 to 16, wherein the drain protrudes downwardly from the lower edge of the depression (1) in less than 70 mm, preferably less than 60 mm.