EP2960384A1 - Drain assembly - Google Patents

Abstract

Claimed is a drainage arrangement, comprising a water fitting, which has a connection for connecting the water fitting to a water supply, and a drainage arrangement, via which water can be discharged from the fitting. The drainage arrangement has a drainage funnel (416) which can be connected to a sewer line. With the discharge funnel a drain body (410) is connected in alignment, which in turn is connected to the water fitting. The drain body has webs (428, 430, 498, 502, 506) between which openings (432, 434) to the atmosphere are formed. The webs (498, 502, 506) are arranged in the drain body (410) offset in the radial direction to each other and cover the entire angular range. Between drain body (410) and discharge funnel (416) also a valve (484) is arranged, which opens in the direction of the discharge funnel.

Description

Technical area

The invention relates to a water fitting comprising a drainage arrangement, via which water can be discharged from a water installation, wherein the drainage arrangement has a drainage funnel, which is connected to a sewer pipe;

State of the art

The utility model DE 94 05 348.0 U1 discloses a drainage funnel having a housing with openings and a spray skirt arranged concentrically with the housing in the interior. The spray skirt dect the openings to the outside and is provided with recesses to ensure venting through the openings at a connection of the drain funnel to a pipe. On the inwardly projecting spray apron, a baffle and distributor plate is formed on top of a conical annular wall. At the bottom of the cover arranged on two circular diameters web segments are provided. The ridge segments on the inner circle are arranged so as to cover the passages formed between the ridge segments on the outer circle. The web segments extend to the baffle and distributor plate. The openings of the spray apron are completely open.

DE 20 2005 002 415 U1 discloses a component set for modularly creating a drain assembly with valve. In the arrangement, the lower edge of the upper drain body is releasably connectable to the upper edge of the lower drain funnel. The component set comprises a return device designed as a closed component. The return safety device comprises an opening direction in the drain direction and in the opposite direction locking valve. The lower discharge funnel forms a receptacle into which the return safety device can optionally be used in a sealing manner. The valve prevents odors from the wastewater from escaping upwards through the upper drain body into the atmosphere. The upper drain body forms a connecting part with webs, between which openings or openings are formed to the atmosphere. As water flows through the drain assembly, it impacts the valve and a portion sprays upwardly and out through the openings in the upper drain body. That is undesirable.

Disclosure of the invention

• (b) einen mit dem Ablauftrichter fluchtenden, mit diesem verbundenen Ablaufkörper zum Verbinden des Ablauftrichters mit der Wasserarmatur, wobei der Ablaufkörper Stege aufweist, zwischen denen Öffnungen zur Atmosphäre gebildet sind; und
• (c) ein zwischen Ablaufkörper und Ablauftrichter angeordnetes, in Richtung des Ablauftrichters öffnendes Ventil; wobei
• (d) die Stege in dem Ablaufkörper in radialer Richtung versetzt zueinander angeordnet sind und den gesamten Winkelbereich abdecken.

It is an object of the invention to provide an improved drainage arrangement. This is achieved with a water fitting of the type mentioned, which is characterized by

• (b) a drain body aligned with the drain body connected thereto for connecting the drain funnel with the water fitting, wherein the drain body webs, between which openings are formed to the atmosphere; and
• (c) a valve disposed between drain body and drain funnel, opening in the direction of the drain funnel; in which
• (D) the webs in the drain body are arranged offset in the radial direction to each other and cover the entire angular range.

In the water fitting a drainage arrangement is provided, which usually consists of a system-side, upper drainage body and an outlet funnel arranged thereunder. The drain body is a downwardly open hollow body with side openings, which is to be connected to a drain pipe of the water fitting. Water to be drained flows into the drain body, the interior of which is under atmospheric pressure through the side openings. Below the drain body, a drain funnel is provided which communicates with a drain line. The drain line communicates with sewers. To avoid odor, a siphon is usually provided in the sewer, which forms an odor trap. It must Of course, it can also be prevented that any rising wastewater can escape from the discharge funnel.

However, there are also systems without siphon. In such systems, an odor trap is provided in the form of a valve in the manner of a backflow preventer. Known drain arrangements of this type are complicated and expensive. In the case of the present invention, it is therefore provided that the drainage arrangement has a drainage funnel, a drainage body and a valve which is arranged between the drainage body and the drainage funnel and opens in the direction of the drainage funnel.

The webs may be arranged in a particularly preferred embodiment of the invention in the drain body at intervals along two or three concentric rings. The angular ranges covered by adjacent lands may preferably overlap. A portion of the webs may be interconnected by radially extending bridges. As a result, leakage of back-splashed water is reliably avoided.

Embodiments of the invention are the subject of the dependent claims. An embodiment is explained below with reference to the accompanying drawings.

Brief description of the drawings

Fig.1

is a cross section through a fitting part to prevent stagnation in a pipe section of a water installation without its own flow meter.

Fig.2

is a perspective view of a connectable to a sewer line fitting part to prevent stagnation in a pipe section of a water installation with its own flow meter and wall mount.

Figure 3

is a rear view of the arrangement FIG. 2 ,

Fig. 4

is an external perspective view of a drain assembly with inserted valve and splash guard.

Figure 5

is a longitudinal section through the drain assembly FIG. 4 ,

Figure 6

is an exploded view of the arrangement FIG. 4 ,

Figure 7

is an exploded view of the valve for the drain assembly FIG. 4 ,

Figure 8

is a cross section along the section line DD in FIG. 5 ,

Figure 9

is a perspective view of a cut upper drain body from below with the ribs and openings.

Description of the embodiments

An in FIG. 1 shown fitting part 18 is provided for a hygiene flush and has a drain. Fitting part 226 FIG. 2 is installed under a sink and connects a water supply to the drain. Normally, the connection is blocked with a barrier. However, if no water has been tapped for a long time, the barrier is opened and a hygiene flush is carried out. Another example of a fitting part is in FIG. 3 shown.

The fitting part 18 in FIG. 1 has a drain port 116. In this simple design no turbine and no pressure sensor is provided. A multi-part housing with an upper housing part 118 and a lower housing part 120 has an inlet 122 at the upper end. The inlet 122 is formed by a tubular connection part 124, which is screwed into an inlet connection 126 on the upper housing part 118. The inlet 122 is connected to a water supply of a wash basin. At the top of the upper housing part 118, a connection 22 for a control device is provided, as in the previously described fittings parts.

Behind the inlet, a conventional ball valve 128 is arranged. The ball valve 128 is actuated by the engine in the control unit. Below the ball valve, the lower housing part 120 is screwed into the upper housing part 118. At the lower housing part 120, a drain assembly with the connection to the drain 116 is arranged. The drain 116 is connected to a sewer.

In particular, if there is no siphon, a drainage arrangement is provided, as shown in Figures 17-22. There is designated 410 an upper drain body. The drain body 410 has a substantially cylindrical basic shape. At the upper end of the drain body 410 via a fastening nut 412 and a clamping ring 414 ( Figure 5 ) connected to a (not shown) drain connection of a water fitting. Coaxially below the drain body 410, a lower discharge funnel 416 is arranged. The drain funnel 416 is connected via a fastening nut 418 and a clamping ring 420 with a (not shown) drain line.

The drain line is connected to a sewer. The drain body 410 and the drain funnel 416 are connected to each other by a Klipsverschluss easily detachable. With 422 a return flow protection is designated, which also in FIG. 7 again shown in detail. This should then, if no siphon is installed in the drain line, interrupt the connection to the sewer and thus avoid odors. It should also be avoided that wastewater can rise in the drain line and escape via the drainage arrangement.

The drain body 410 has a nozzle-like upper portion 424. A ring 426 is connected to section 424 through 428 and 430. The webs 428 and 430 define lateral openings 432 and 434. These openings 432 and 434 ensure that the outlet nozzle is directly connected to the atmosphere when opening a fitting-side drain valve and is at atmospheric pressure.

The ring 426 of the drain body 410 engages a collar 440 at the upper edge of the downcomer 416. This collar 440 has two diametrically opposed, upwardly extending projections 442 and 444. On these projections 442 and 444 of the ring 426 is clipped with an inwardly projecting edge. It turns out like this Clip closure that allows quick assembly and disassembly of the drain body 410 and the drain funnel 416.

In this way, drain body 410 and drain funnel 416 alone, i. be mounted without backflow preventer, especially if a siphon is installed as an odor trap in the drain line.

However, such a backstop 422 can be conveniently installed on site or retrofitted, if necessary.

For this purpose, a cylindrical portion 456 is provided on the inner wall of the discharge funnel subsequent to the upper edge. The portion 456 may also include the inner wall of the collar 440. The cylindrical portion 456 is followed by a step 458. The portion 456 and the step 458 form a receptacle for the backflow preventer 422 in the discharge funnel 416. The return safety device has a cup-shaped insert part 460. The insert member 460 is radially held in the cylindrical portion 456 and is seated with a rim 462 on the step 458. On the outer circumferential surface of the insert part 460, an annular groove 464 is formed, in which a sealing ring 466 sits Thus, the backflow preventer 422 is tightly inserted into the cylindrical portion 456.

The return protection 422 forms a closed component. The insert 460 then has at the edge 462 with a conically tapered outer wall and a total downwardly conically tapered inner wall. At the bottom, the insert 460 is substantially open. The bottom 468 forms two sector-shaped openings 470 and 472, each extending over almost 180 °. The openings 470 and 472 form between them a web 474. The web 474 carries a central guide ring 476. Through the guide ring 476 is inserted from below a plunger 478 therethrough. The plunger 478 is at its lower end a disc 480 which is fixedly connected to the plunger 478. On the disc 480 is a flexible rubber disc of slightly larger diameter. The rubber disc covers the openings 470 and 472 from below and is normally at the lower end face 82 of the insert part 460 at. The rubber disc forms a valve plate 484. The plunger 478 is at its upper End provided with a thread 486. The plunger 478 is surrounded by a relatively weak coil spring 488. The coil spring 488 is supported on the guide ring 476 and acts on a head 490. The head 490 is screwed onto the thread 486 with a threaded bore. The coil spring 488 thus pulls over the plunger 478, the disc 480 and thus the valve plate 484 upwards. In this way, the valve is normally kept tightly closed. Odors can not escape from the drainpipe. Also about about the drain pipe rising waste water press the valve and can not escape through the drain assembly.

When water exits the water installation via the drain neck, this water collects in the bowl-shaped insert part 460. Due to the weight of this water, the valve 484 is pressed by overcoming the weak coil spring 488. The water can drain.

In particular, when larger amounts of water drain, water can splash back. Leakage of the water from the openings 432 and 434 is avoided by the shape and arrangement of the lands 428 and 430. This is in the FIGS. 8 and 9 again shown in detail. FIG. 8 shows a cross section along the section line DD in FIG. 5 , It can be seen that the webs are arranged on three imaginary, concentric rings 492, 494 and 496. The rings are spaced from each other.

On the outermost ring 492 6 webs 498 are evenly spaced from each other. Between the webs 498 openings 500 are formed. On the middle ring 494 6 webs 502 are arranged. Between the webs 502 openings 504 are formed. On the innermost ring 96 6 webs 506 are arranged. Between the webs 506 openings 508 are formed. All the webs 498, 502 and 506 are curved and extend across their width along the circumference of the imaginary rings 492, 494 and 496.

The webs 498 on the outermost ring 492 are connected to the webs 502 on the middle ring 494 via radially extending bridges 510. In this case, the bridge connects 510 each clockwise front end of the web 502 with the clockwise rear end of the web 498 of the outer ring 492. The from a web 498 on the Outer ring 492 covered angle range covers the area covered by the opening 504 in the middle ring 494 angle range and protrudes slightly beyond. The angle range covered by the webs 506 on the innermost ring 496, in turn, approximately corresponds to the angular range of the associated web 498 on the outermost ring 492.

It can be seen that water that splashes back from the insert part 460 of the valve strikes one of the webs 498, 502 or 506 in each angular range. Additional security is provided by the 510 bridges, which retain multiple splashed water. The arrangement ensures that there are sufficient openings to maintain atmospheric pressure, but leakage through splash water is reliably prevented.

The fitting part 18 in FIG. 1 does not have its own flow measuring function. This is taken over by another fitting part. If no or too little water is withdrawn over an extended period of time, for example 48, 72 or 240 hours, this is detected by one of the flow-measuring fitting parts. Then the fitting part 18 receives a control command via a control unit to open the normally closed ball valve 128. Water flows from the inlet 122 to the drain 116. In this way, water flows through all piping in front of this fitting. The piping installation is flushed and the formation of germs by stagnant water is avoided. After a certain period of time or a predetermined amount of flushing water the ball valve 128 is closed again. Flushing therefore only takes place when the flow conditions detected with another valve require it.

The fitting part 18 can be installed wherever a water supply pipe and a drain are close to each other. A particularly suitable place is below sink. The inlet 122 is connected to the water supply.

Depending on the hydraulic situation, the valves are installed in both hot and cold pipes. This is particularly useful in a central hot water supply. In addition to the pressure sensors, temperature sensors may be provided in the fittings. The temperature sensors allow monitoring of the lower one Temperature limits of, for example, 55 degrees for hot water and upper temperature limits of, for example, 25 degrees Celsius to prevent the formation of Legionella or similar germs and microorganisms.

Claims (7)

Containing water fitting (A) a drainage arrangement, over which water from a water installation can be discharged; the drain assembly having a drain funnel (416) connected to a sewer pipe;
marked by (b) a drain body (410) aligned with the drain funnel (416) for connecting the drain funnel (416) to the water fitting, the drain body having lands (428, 430; 498, 502, 506) between which openings (432, 434) are formed to the atmosphere; and (C) between the drain body (410) and discharge funnel (416) arranged in the direction of the discharge funnel opening valve (484); in which (D) the webs (498, 502, 506) in the drain body (410) are arranged offset in the radial direction to each other and cover the entire angular range. Water fitting according to claim 1, characterized in that the webs (428, 430, 498, 502, 506) in the drain body (410) at intervals along two or three concentric rings (492, 494, 496) are arranged. Water fitting according to claim 1 or 2, characterized in that the angle ranges covered by adjacent webs (428, 430; 498, 502, 506) overlap. Water fitting according to one of the preceding claims, characterized in that a part of the webs is connected to each other by radially extending bridges (510). Water fitting according to one of the preceding claims, characterized in that the openings are arranged to the atmosphere between the webs laterally at the level of the webs. Water fitting according to one of the preceding claims, characterized in that the valve is provided in a return valve, which has a bowl-shaped insert part (460) for collecting water. Water fitting according to claim 6, characterized in that the insert part (460) bottom is open and cooperates with a spring-loaded valve plate (484).

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