EP1484453B1 - Overflow and outlet device for sanitary apparatus - Google Patents

Abstract

Overflow and drainage fitting for sanitary appliances comprises an overflow pipe connected to a drainage opening and having in the flow direction firstly a vertical channel and after an overflow edge a return channel. On reaching a pre-determined water level (27) in the sanitary appliance, the overflow pipe forms a closed flow (34) that removes water from the sanitary appliance. Preferred Features: The discharge rate of the closed flow is greater than a maximally permissible incoming rate, especially greater than about 0.61/sec.

Description

The invention relates to an overflow and drain set for sanitary Apparatus according to the preamble of claim 1.

An overflow and drain fitting of the type mentioned is in Prior art known from EP 0 446 177 A of the applicant become. In this case, the overflow is hidden, whereby the overflow edge the maximum level of water in the sanitary appliance certainly. Another overflow and drain fitting with a concealed overflow pipe is also from the EP 0 098 757 has become known. In the known overflow and Drain fittings is considered disadvantageous that they comparatively take up a lot of space and in confined spaces, especially behind bathtubs and vanities hardly or not mountable.

DE 36 10 006 A discloses a low-lying overflow set for bathtubs. At this one lifting effect and thus a To prevent unwanted emptying of the tub, must be at this mounted above an overflow connection, a secondary air device be.

The invention is based on the object, an overflow and drain set of the kind mentioned to create less space claimed and also more powerful and secure.

The task is in a generic overflow and drain set solved according to claim 1. Becomes a sanitary apparatus, for example, a bathtub filled over the intended level, so a closed flow forms in the overflow pipe, the high-performance water above the level sucks. Due to the high performance of a closed Flow can be the overflow pipe of much smaller diameter or smaller cross-sectional area than previously produced become. Due to the smaller diameter of the overflow pipe is a correspondingly smaller and less space consuming Execution possible. The smaller size also means a lower material consumption and thus lower production costs as well as a smaller transport volume.

According to a development of the invention are means for interruption provided the suction flow. This makes it possible for the closed flow targeted at reaching the desired level and safely interrupting and thus the desired level set and prevent a vacuuming of the pan. A particularly simple and safe execution of these funds points a communicating tube open at the top and above the overflow edge is connected to the overflow pipe. falls with closed flow, the level in the communicating pipe to a predetermined level, so is by incoming air in the overflow pipe interrupted the closed flow.

According to a development of the invention, a collecting trough is provided, in a closable drain and an opening for the overflow pipe are arranged. This is a simple design and easy installation possible. After a training The invention is also an opening in this sump arranged for the communicating pipe.

Further advantageous features and advantages emerge from the dependent claims, the following description and the drawing.

Figur 1

schematisch eine räumliche Ansicht einer erfindungsgemässen Überlauf- und Ablaufgarnitur,

Figur 2

schematisch einen Schnitt entlang der Linie II-II der Figur 1,

Figur 3

schematisch ein Schnitt durch eine Badewanne mit einer montierten Überlauf- und Ablaufgarnitur,

Figur 4

ein weiterer Schnitt durch die erfindungsgemässe Überlauf- und Ablaufgarnitur,

Figur 5

eine weitere Ansicht der erfindungsgemässen Überlauf- und Ablaufgarnitur und

Figuren 6 bis 11

schematisch die Arbeitsweise der erfindungsgemässen Überlauf- und Ablaufgarnitur.

An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:

FIG. 1

FIG. 2 is a schematic view of a spatial view of an overflow and drain fitting according to the invention, FIG.

FIG. 2

1 is a schematic section along the line II-II of FIG. 1,

FIG. 3

schematically a section through a bathtub with a mounted overflow and drain fitting,

FIG. 4

a further section through the inventive overflow and drain fitting,

FIG. 5

another view of the inventive overflow and drain set and

FIGS. 6 to 11

schematically the operation of the inventive overflow and drain set.

The overflow and drain fitting 1, according to Figure 1 a Collecting trough 3, which in a conventional manner according to FIG on a floor 35 of a sanitary body 2, for example one Bathtub, is mounted. About the sump 3 is a lid 11, which has a drain opening 10, an opening 15 for an overflow pipe 5 and an opening 14 for a communicating Cover tube 8. In Figure 1, the lid 11 is drawing Reasons cut off. The lid 11 closes the sump 3 does not, but forms one here at the edge invisible opening, through the water in the sump. 3 arrives.

The drain opening 10 is shown in FIG 4 with a known Drain valve 21 closable and leads into a siphon or odor trap 20 and in a drain pipe 9, the to a not shown here discharge line is to be connected.

As shown in particular in FIG. 3, the overflow pipe 5 is covered arranged and thus from the outside with mounted sanitary body 2 usually not visible. The overflow pipe 5 is like seen from below connected to the opening 15 and has a substantially horizontal portion 22, to the a substantially vertically ascending section 36, an arch 38 and a descending section 37 connect. At the bottom End of the descending section 37 is a siphon bow or odor trap 12 connected via a connector 17 also in the above-mentioned disposal line leads. The rising portion 36 forms according to Figure 2 a Riser 18, which at its upper end via an overflow edge 6 leads into a return channel 19 passing through the section 37 is formed.

Run substantially parallel to the horizontal portion 22 a pipe section 13 of the communicating pipe 8, connected to the Opening 14 connected and with a vertically rising section 39 is connected. The communicating pipe 8 has an upper end of an opening 16. Below this opening 16 is the communicating tube 8 with a substantially horizontal Tube 7 connected to the bow 38. The tube 7 forms 2 shows a substantially horizontally extending connecting channel 40, whose cross-section is substantially smaller than that of the riser channel 18. The opening 16 is as shown over the overflow edge 6 and also over the connection channel 40 arranged, however, according to Figure 3 is below a Edge 4 of the sanitary apparatus 2. The opening 16 is thus also concealed. However, the opening 16 is located preferably immediately below the edge 4, like FIG. 3 lets recognize.

The method of operation according to the invention overflow and drain set explained in more detail.

FIG. 6 shows a bath 2, at which an inventive Overflow and drain fitting 1 is connected and with a water inlet 31, for example a conventional faucet can be filled with water 28. Is the bathtub 2 according to 6 empty, the siphon 20 with water 23 and the siphon 12 filled with water 26. Likewise, sections 22 and 13 filled with water 24 or 25 respectively.

If, according to FIG. 7, the trough 2 is filled with water, then forms in the bathtub 2 a rising water level 27. The drain opening 10 is of course closed here. Since the openings 14 and 15 are open and the lid 11 as mentioned at its edge forms a passage, the water rises simultaneously in both sections 36 and 39. Through the opening 16 can escape the air between the water 24 and 26. In section 36, the water forms a water level 30 and in section 39 a water level 29. Levels 27, 29 and 30 are each at the same height. Is this located? Level 30 at the height of the overflow edge 6, so is the Level 29 below the connection channel 40 and the level 27 below the edge 4. Is the water supply to the bath 2 comparatively low, the level 27 remains at the level of Overflow edge 6 and inflowing water is continuously over the Overflow edge 6 discharged. The overflowing water 32 passes according to Figure 8 in the siphon sheet 12 and finally in the disposal line.

If the water inlet 31 is opened further and per unit of time more water introduced, so that the usual drainage of the Overflow pipe 5 is smaller than the supply, so the level rises 27 over the height of the overflow edge 6 and finally over the height of the connecting channel 40, as indicated in Figure 9 is. Accordingly, the level 29 increases in the communicating Tube 8. Due to the rise of the level 30, the sheet 38 completely filled with water. The cross section of the overflow pipe 5 is now dimensioned so that in the overflow pipe 5 a forms closed water flow. A closed flow 34 then forms when in the return channel 19 of the flow so big is that he after the overflow edge 6 the whole Cross-section of the return channel 19 concludes and no air can flow. Preferably, this is the cross section of the Channel 19 smaller than that of the channel 18. Has one such closed water flow 34 is formed, then the water velocity significantly increased in the channel 19 and thus accordingly improves the discharge performance. After the formation of the closed water flow 34 is thus from the bathtub. 2 sucked more water than before. Via the connection channel 40 Through the closed flow 34 is also water from the communicating pipe 8 discharged. The level 29 and also the Level 27 thus decreases comparatively quickly. The performance of closed water flow 34 is sized so that they are higher is the maximum allowable inflow. This maximum allowed Inflow amount is usually in sanitary apparatus 0.5 to 0.6 l / sec. In most countries there are corresponding Regulations. The overflow pipe 5 is thus dimensioned that after the formation of the closed water flow 34 per Second more than, for example, 0.5 to 0.6 l / sec. dissipated becomes. Even at maximum inflow, the level 29 thus decreases which has formed a closed water flow 34. Sinks now the level 29 below the height of the connecting channel 40, so Air flows through the opening 16 through the air passage 40 in the arc 38, as indicated in Figure 10 by the arrow 33 is. As a result, the closed water flow 34 is interrupted and the level 27 falls to the height of the overflow edge 6. If the inflow remains high, the level rises 27 again and the above-described process with the education the closed water flow 34 is repeated. Becomes turned off the water supply or significantly throttled, so the level 27 according to FIG. 10 remains stable at the level of Overflow edge 6.

In order to empty the bath 2, the drain valve 21 is opened. The water drains over the siphon sheet 12 and enters the above disposal line. Finally, again reaches the state shown in Figure 6.

In a trapping on the overflow edge 6 is thus a closed water flow 34 is formed, which is a comparatively has high performance and prevents even at maximum inflow, that the bathtub 2 overflows. An overflow of the bathtub 2 could of course also with an overflow pipe 5 are realized, which dimensioned a correspondingly wide Owns the line. Such an overflow pipe would but accordingly take up a lot of space. The overflow pipe 5 of according to the invention overflow and drain set but with an overflow pipe 5 can be realized, the channels 18 and 19 with having a much smaller inner diameter. Also at maximum allowable inflow can overflow the bath 2 or another sanitary appliance.

LIST OF REFERENCE NUMBERS

1

set

21

drain valve

2

sanitary apparatus

22

Horizontal section

3

collection trough

23

water

4

edge

24

water

5

Overflow pipe

25

water

6

Overflow edge

26

water

7

pipe

27

water

8th

Communicating pipe

28

water

9

drain pipe

29

water level

10

Lockable drain opening

30

water level

11

cover

31

water supply

12

Sifonbogen

32

water

13

pipe section

33

arrow

14

opening

34

Closed flow

15

opening

35

ground

16

opening

36

Ascending section

17

connector

37

Descending section

18

rising channel

38

bow

19

Return channel

39

Rising section

20

sifon

40

connecting channel

Claims (11)

1. Overflow and outlet fitting for sanitary apparatus (2), in particular for vanity units, wash basins, sinks, baths and bidets, with an overflow pipe (5) mounted so that it is hidden and connected to the outlet orifice, which, as viewed in the flow direction, has firstly a riser passage (18) and a return passage (19) after an overflow edge (6), characterised in that, when a predefined water level (27) is reached in the sanitary apparatus (2), the overflow pipe (5) sucks out water in a closed flow (34) and means (7, 8) are provided which interrupt the closed flow if the level drops to a predefined level in a pipe (8) communicating with the sanitary apparatus.
2. Fitting as claimed in claim 1, characterised in that the drainage rate of the closed flow (34) is higher than a maximum permissible incoming flow rate, in particular higher than approximately 0.6 l/sec.
3. Fitting as claimed in claim 1 or 2, characterised in that the closed flow (34) is established whenever a water level (30) in the riser passage (18) is exceeded.
4. Fitting as claimed in claim 3, characterised in that the communicating pipe (8) is open at the top and is connected to the overflow pipe (5) above the overflow edge (6).
5. Fitting as claimed in claim 4, characterised in that, in the assembled state, the communicating pipe (8) is pulled up essentially to below an edge (4) of the sanitary apparatus (2).
6. Fitting as claimed in one of claims 1 to 5, characterised in that a catchment well (3) is provided, to which an outlet pipe (9) and the overflow pipe (5) are connected.
7. Fitting as claimed in claim 6, characterised in that the catchment well (3) has an outlet orifice (10) which can be closed.
8. Fitting as claimed in claim 6 or 7, characterised in that the catchment well (3) has an outlet orifice (14) to which the communicating pipe (8) is connected.
9. Fitting as claimed in one of claims 1 to 8, characterised in that the catchment well (3) has an open cover (11).
10. Fitting as claimed in one of claims 1 to 9, characterised in that an outlet orifice (10) which can be closed, an orifice (15) for the overflow pipe (5) and an orifice (14) for the communicating pipe (8) are disposed in the catchment well (3).
11. Fitting as claimed in one of claims 1 to 10, characterised in that the cross-section of the overflow pipe (5) is dimensioned such that the closed flow (34) is established whenever a predefined water level (27) in the sanitary apparatus (2) is exceeded.

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