EP4095324A1 - Flushing system - Google Patents

Abstract

A rinsing system (1) comprises a cistern (2) for receiving rinsing water, a filling valve (3) with which the cistern (2) can be filled with rinsing water, a rinsing valve (4) with which a fluidically connected to the cistern (2) in Connected sanitary articles (5), such as a toilet bowl or a urinal, can be flushed, and an overflow protection float (6), with which the flushing valve (4) can be controlled, the overflow protection float (6) being arranged in such a way that in the event of a malfunction of the filling valve, in which the filling valve remains open in an uncontrolled manner and flushing water flows into the cistern (2) in an uncontrolled manner, the flushing valve (4) can be opened when an upper fill level is reached, flushing water from the cistern (2) via the flushing valve (4) to the sanitary article (5) drains.

Description

TECHNICAL AREA

The present invention relates to a flushing system according to claim 1 and an arrangement with said flushing system according to claim 12.

STATE OF THE ART

Flushing systems which have a cistern, a filling valve and a flushing valve are known from the prior art. The filling valve is used to fill the cistern after flushing, during which the flushing water flows out of the cistern through the flushing valve to a sanitary article, such as a toilet or a urinal.

The filling valve is typically controlled by a float, which opens the filling valve when the cistern is empty and closes the filling valve again when the cistern is full. If the filling valve malfunctions, there is a risk that the cistern will be overfilled and emptied in an uncontrolled manner. With a concealed cistern, serious water damage occurs behind a pretext. With a wall-mounted cistern, the flushing water pours over the bathroom floor, which also results in water damage.

Flushing valves known from the prior art typically have an overflow pipe via which the flushing water can flow off in the direction of the sanitary article in the event of a defect in the filling valve. However, this concept cannot be used with all cisterns.

Such overflow pipes cannot be used, particularly in the case of pressure flushing, in which the flushing valve is supplied with flushing water at line pressure.

PRESENTATION OF THE INVENTION

Proceeding from this prior art, the object of the present invention is to specify a flushing system which can be used more flexibly in different types of flushing concepts.

This object is achieved by the subject matter of claim 1. Accordingly, a flushing system comprises a flushing cistern for receiving flushing water, a filling valve with which the flushing cistern can be filled with flushing water, a flushing valve with which a sanitary article fluidically connected to the flushing cistern, such as a toilet bowl or a urinal that can be flushed, and an overflow protection float with which the flush valve can be controlled. The overflow protection float is arranged in such a way that in the event of a malfunction of the filling valve, in which the filling valve remains open in an uncontrolled manner and flushing water therefore flows into the cistern in an uncontrolled manner, the flushing valve can be opened when an upper filling level is reached, with flushing water flowing out of the cistern via the flushing valve to the sanitary article .

In other words, the flushing valve is actively actuated by the float and when said upper filling level is reached, the flushing valve is opened so that the flushing water can flow out of the cistern via the flushing valve. This flushing system can be used flexibly for many types of flushing systems. For example, for flushing systems that are operated with water pressure from a mains or a pump, or for flushing systems that are operated with the gravity of the water.

If the flushing valve is actuated by the overflow protection float, the flushing water flows off to the sanitary article via the fluidic connection between the flushing cistern and the sanitary article and the flushing cistern can be prevented from overflowing.

The upper filling level defines the maximum filling level up to which the cistern can be filled without the flushing water escaping from the cistern in an uncontrolled manner. The upper filling level is therefore the filling level at which safety devices, in the present case the flushing valve and the overflow protection float, have to be activated. The upper filling level is higher than the normal filling level up to which the cistern is filled in normal operation.

The overflow protection float is connected to the flushing valve with an actuator element Connection. The filling valve can be opened or closed via this actuator element based on the position of the overflow protection float.

The flushing valve preferably has a further actuating element with which a proper flushing can be triggered. For example, a trigger can act on the flushing valve, the flushing valve then being opened. Furthermore, the flushing valve is closed again when the flushing process is completed. A regular flush can be a full flush or a partial flush. The flushing valve thus has two functions: on the one hand the function of overflow protection, on the other hand the function of normal flushing activation.

The overflow protection float preferably controls the flushing valve in such a way that the flushing valve is closed again when a lower level is reached after overflow flushing has taken place. The overflow protection float also sinks as the filling level in the cistern decreases and closes the flushing valve when the lower filling level has been reached.

Viewed in the installation position, the lower level is below the upper level. The lower filling level can, for example, be the filling level which is controlled in the case of full-quantity or partial-quantity control.

In a first variant of the control, the overflow protection float floats up to the level of the upper filling level when the cistern is filling up. Based on reaching the upper filling level, the overflow protection float acts on the flushing valve, so that the flushing valve can be opened or is opened. As soon as the overflow protection float has reached the upper filling level, the flushing valve is opened via the float and the flushing water flows out of the cistern via the flushing valve.

In a second variant, the overflow protection float rises to a stop when the cistern is filling, the buoyancy force of the overflow protection float increasing with rising water level in the cistern and then acting on the flush valve when a predetermined buoyancy force is reached, so that the flush valve can be opened or is opened . Viewed in the installation position, the stop is below the upper filling level. The buoyancy of the spillway increases because the flush water continues to rise relative to the fixed spillway, causing the flush water level relative to the fixed Overflow protection float increases. The buoyancy force for different applications can be flexibly selected via the dimensioning and the immersion depth of the overflow protection float, which increases the design freedom.

In a first embodiment, the flushing valve has an inlet which can be connected to a pipe network in the building in such a way that the flushing valve is supplied with flushing water under line pressure, the flushing valve being connected to a first section of a flushing line with a jet pump, the jet pump has a Venturi nozzle with a suction opening open towards the cistern, wherein when the flushing valve is open, water under line pressure can be fed into the Venturi nozzle, such that the Venturi nozzle can feed water from the cistern via the suction opening into a section of the flushing line that is second to the sanitary article.

The venturi nozzle is arranged at the end of the first section and the suction opening is part of the second section. The Venturi nozzle protrudes into the intake opening. The suction opening is preferably arranged in the area of the bottom of the cistern. The second section opens into the sanitary article with its end opposite the Venturi nozzle.

The use of the pressure flushing valve as described also has the advantage that the flushing cistern can also be emptied if the filling valve malfunctions when the flushing cistern, seen in the installation position, is lower than the entry of the flushing line into the sanitary article.

The flushing valve is preferably connected to the filling valve via a control line, it being possible for the filling valve to be closed with a water pressure prevailing in the control line when the flushing valve is open. The control line causes the filling valve to close.

The flushing line preferably has a pipe interrupter for separating drinking water from flushing water. The pipe interrupter is preferably arranged in the first section of the flushing line mentioned above.

In another embodiment, the flushing valve is a gravity flushing valve which has a valve body which can be controlled with the overflow float, the flushing water flowing out of the flushing tank by gravity.

In a further development, a flushing valve of the first embodiment and a flushing valve of the second embodiment are arranged. This, for example, in the same cistern. One of the two flushing valves or both flushing valves can preferably be controlled with the overflow protection float.

The overflow protection float preferably has an opening element which acts on a valve body of the flushing valve via an actuator element and opens the valve body, and that the overflow protection float has a closing element which acts on said latching element via the actuator element so that the valve body closes.

The actuator element is preferably held by means of a latching element in such a way that the valve body is held in the open position by the actuator element. The closing element can act on the actuator element and/or the latching element, so that the valve body is no longer held by the actuator element.

The opening element and the closing element are preferably designed to be adjustable, so that the exact open position and the exact closed position can be set by adjusting the opening element and the closing element.

The overflow protection float preferably moves along a guide which, in the installed position, preferably runs vertically. The float is preferably a hollow body.

One arrangement comprises a flushing system according to the above description and a sanitary item, in particular a toilet bowl or a urinal, wherein flushing water can be fed to at least one inlet opening in the sanitary item with the flushing valve, so that flushing water can be fed into the sanitary item via the inlet opening.

The sanitary article preferably has a receiving space, a siphon section adjoining the receiving space and a drain pipe, with said inlet opening opening into the receiving space and/or into the drain pipe.

The inlet opening which opens into the receiving space is preferably at the height of a Functional overflow, the altitude for the safety overflow, at which the flushing valve is opened by the overflow safety float, is above the inlet opening.

The cistern preferably has two tank areas, with a first flushing valve for flushing the receiving space being provided in a first tank area and a second flushing valve for impulse flushing into the drain pipe being provided in a second tank area, one of the two flushing valves or both flushing valves being controllable with the emergency overflow float are.

A method for operating a flushing system according to the above description is characterized in that when an upper level is reached, the overflow protection float controls the flushing valve in such a way that it opens and flushing water flows out of the cistern via the flushing valve, and that when a lower level is reached, the overflow protection float Purge valve controlled so that it is closed.

Further embodiments are specified in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine schematische perspektivische Ansicht eines Spülsystems;

Fig. 2

die schematische Ansicht gemäss Figur 1 kurz vor der Betätigung eines Spülventils mit einem Überlaufschutzschwimmer;

Fig. 3

eine schematische Ansicht des Überlaufschutzschwimmers nach Figuren 1 und 2 bei der Betätigung des Spülventils;

Fig. 4

eine schematische Ansicht einer Anordnung mit einem Spülventil nach einem der vorhergehenden Figuren und einer Toilettenschüssel mit teilweise geschnitten dargestellten Bereichen; und

Fig. 5

eine schematische Ansicht einer Anordnung mit einem Spülventil nach einem der vorhergehenden Figuren und einer Toilettenschüssel mit teilweise geschnitten dargestellten Bereichen.

Preferred embodiments of the invention are described below with reference to the drawings, which are for explanation only and are not to be interpreted as restrictive. In the drawings show:

1

a schematic perspective view of a flushing system;

2

according to the schematic view figure 1 just before the actuation of a flush valve with an overflow protection float;

3

a schematic view of the overflow protection float figures 1 and 2 when the flush valve is actuated;

4

a schematic view of an arrangement with a flush valve according to one of the preceding figures and a toilet bowl with areas shown partially in section; and

figure 5

a schematic view of an arrangement with a flush valve according to one of the preceding figures and a toilet bowl with areas shown partially in section.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the Figures 1 to 3 a particularly preferred embodiment of a flushing system 1 according to the present invention is shown. The flushing system 1 comprises a flushing tank 2, a filling valve 3, a flushing valve 4 and an overflow protection float 6. The flushing system 1 is in accordance with Figures 4 and 5 with a sanitary article 5 in connection. The flushing system 1 and the sanitary item 5 form an arrangement.

The cistern 2 is used to hold rinsing water for rinsing the sanitary article 5. The filling valve 3 is used to fill the cistern 2 with rinsing water. The filling valve 3 is connected to an inflow line on the building side. Rinsing water for rinsing the sanitary article 5 can be supplied to the sanitary article 5 via the flushing valve 4 . A flush can be a full flush or a partial flush. Flushing is triggered by actuating an actuating element 22 .

In the figure 1 a partially sectioned representation of the flushing system 1 is shown. The overflow protection float 6 is in a middle position. Starting from the figure 1 the cistern 2 is filled with flushing water. Here, the overflow protection float 6 moves up with the flushing water. In the figure 2 a position is shown in which the overflow protection float 6 is higher than in the figure 1 .

If the filling valve 3 malfunctions, the filling valve 3 remains open in an uncontrolled manner. As a result, flushing water flows continuously into the cistern 2 . The cistern 2 may overflow. The overflow protection float 6 is arranged in such a way that in the event of a malfunction of the filling valve 3 of the overflow protection float 6, the flushing valve 4 is opened when an upper fill level is reached. In this case, flushing water will flow out of the flushing tank 2 via the flushing valve 4 to the sanitary item 5 . The upper filling level corresponds to the filling level which is defined as the filling level for the triggering of safety devices, formed here by the overflow safety float 6 and the flushing valve 4 . The combination of the overflow protection float 6, with which an imminent overflow is detected, and the activation by the overflow protection float 6 of the flushing valve 4, which serves as an overflow valve in addition to the normal flushing function, ensures appropriate overflow protection. The cistern 2 can therefore not overflow when the filling valve 3 malfunctions as described. Rather, the flushing water will flow off directly with the flushing valve 4 via the sanitary item 5 .

The overflow protection float 6 can control the flushing valve 4 based on its position or based on its buoyancy for the process of opening.

When controlled via the position, the overflow protection float 6 controls the flushing valve 4 in such a way that the float floats up to the level of the upper filling level and then acts on the flushing valve 4 based on reaching the upper filling level, so that the flushing valve 4 is opened.

When controlled via the buoyancy force, the overflow protection float 6 rises up to a stop on the flushing valve 4 . The buoyancy of the overflow protection float 6 increases as the water level in the cistern 2 rises. When the predetermined buoyancy force is reached, the overflow protection float 6 then acts on the flushing valve 4, so that the flushing valve 4 is opened. The stop can be part of the actuator element 23 described below, for example.

Furthermore, the overflow protection float 6 controls the flushing valve 4 in such a way that the flushing valve 4 is closed again when a lower filling level is reached, that is to say after the overflow has been flushed.

If the malfunction of the filling valve 3 persists, the process of opening the flushing valve 4 and closing the flushing valve 4 is repeated several times in succession.

The overflow protection float 6 is connected to the flushing valve 4 by an actuator element 23 and actuates the flushing valve 4 when the filling levels mentioned are reached.

In the embodiment shown, the flushing valve 4 is a pressure flushing valve 4. The flushing valve 4 has an inlet 7 which can be used with a pipe network in the building such that the flushing valve 4 is supplied with flushing water under line pressure. The flushing valve 4 is connected to a first section 8 of a flushing line with a jet pump 9 . The jet pump 9 has a Venturi nozzle 10 with a suction opening 11 open towards the cistern 2 . Next, the Venturi nozzle 10 is followed by a second section 12 of the flushing line. This second section 12 leads to the sanitary article 5. The suction opening 11 is in a lower area of the cistern 2. The venturi nozzle 10 is provided by an end area of the first section 8. FIG. The suction opening 11 is through the second section 12 provided. The venturi nozzle 10 protrudes into a conical section of the suction opening 11 . An annular gap 24 is present between the outside of the Venturi nozzle 10 and the inside of the suction opening 11 . When the flushing valve 4 is open, flushing water flows out of the first section 8 via the venturi nozzle 10 and flows into the second section 12 via the suction opening 11 . A negative pressure is created in the annular gap 24 , via which water is sucked out of the cistern 2 into the second section 12 . As a result, the cistern 2 is emptied. This is the case with a normal flushing process as well as with overflow flushing.

Furthermore, a pipe interrupter 14 is arranged in the first section 8 of the flushing line, which provides a class separation between fresh water and flushing water.

The flushing valve 4 is connected to the filling valve 3 via a control line 13 . When the flushing valve 4 is open, the filling valve 3 is acted upon by a water pressure prevailing in the control line 13 and is closed. The flushing valve 3 can thus be controlled via the water pressure prevailing in the control line 13 .

In an alternative embodiment, the flushing valve 4 can also be a gravity flushing valve. Such flushing valves typically have a valve body which is raised to open the valve. In this embodiment, the overflow protection float 6 controls the valve body accordingly. The flushing water flows out of the cistern 2 by gravity.

In the figure 3 the flushing valve 4 is shown in detail together with the overflow protection float 6. The overflow protection float 6 has an opening element 19 and a closing element 21 . The opening element 19 and the closing element 21 act on an actuator element 23. A valve body of the flushing valve 4 is controlled via the actuator element 23. When the filling level mentioned above is reached, the opening element 19 acts on the actuator element 23 so that the flushing valve 4 can be opened. The actuator element 23 is held here by means of a latching element 20, so that the valve body is held in the open position. As soon as the overflow protection float 6 reaches the bottom position, the flushing valve 4 can be closed again. Here, the closing element 21 acts on the actuator element 23 and cancels the connection between the actuator element 23 and the latching element 20 again, so that the valve body closes again.

In the embodiment shown, the opening element 19 presses on the actuator element 23 from below and the closing element 21 pulls the actuator element 23 from above downwards.

The opening element 19 and also the closing element 21 are connected to the overflow protection float 6 via a threaded connection 25 . This threaded connection 25 enables the opening element 19 and the closing element 21 to be adjusted. The height of the opening element 19 and the closing element 21 with respect to the actuator element 23 can be adjusted.

The overflow protection float 6 has at least one hollow chamber 27 which ensures the buoyancy of the overflow protection float 6 in the cistern 2 .

In the Figures 4 and 5 As mentioned, an arrangement with a flushing system 1 as described above and a sanitary article 5, here in the form of a toilet bowl, is shown. In the embodiment shown, the sanitary article 5 has a receiving space 16 , a siphon section 17 excluding the receiving space 16 and a drain pipe 18 adjoining the siphon section 17 .

The sanitary article 5 also includes the cistern 2 here. However, the cistern 2 can also be arranged at a distance from the sanitary article 5 . For example as a concealed cistern.

In the embodiment shown, the receiving space 16 has an inlet opening 15 . The flushing valve 4 can be used to supply flushing water to an inlet opening 15 in the sanitary article 2 . In this way, a surface flushing of the receiving space 16 can be achieved.

Of the figure 5 it can also be seen that the arrangement has a further flushing valve 26 . The further flushing valve provides flushing water flow into the drain pipe 18 . A suction effect on the siphon section 17 can be achieved via this flushing water flow. In a development, it is conceivable that the overflow protection float 6 is arranged in such a way that it also or alternatively controls the flushing valve 26 .

In the figure 5 is further shown that the cistern 2 has two tank areas 27, 28. The flushing valve 4 is arranged in the tank area 27 and the flushing valve 26 is arranged in the tank area 28 .

REFERENCE LIST

1

flushing system

2

cistern

3

filling valve

4

purge valve

5

sanitary ware

6

overflow protection float

7

inlet

8th

first section of flushing line

9

jet pump

10

venturi nozzle

11

intake port

12

second section flushing line

13

control line

14

pipe interrupter

15

entry opening

16

recording room

17

siphon section

18

drain pipe

19

opening element

20

locking element

21

locking element

22

actuator

23

actuator element

24

annular gap

25

threaded connection

26

another flush valve

27

hollow chamber

Claims (16)

Flushing system (1) comprising
a cistern (2) for holding flushing water,
a filling valve (3) with which the cistern (2) can be filled with flushing water,
a flushing valve (4) with which a sanitary article (5) fluidically connected to the flushing tank (2), such as a toilet bowl or a urinal, can be flushed, and
an overflow protection float (6) with which the flushing valve (4) can be controlled, the overflow protection float (6) being arranged in such a way that in the event of a malfunction of the filling valve, in which case the filling valve remains open in an uncontrolled manner and flushing water flows into the flushing cistern (2) in an uncontrolled manner , the flushing valve (4) can be opened when an upper fill level is reached, with flushing water flowing out of the cistern (2) via the flushing valve (4) to the sanitary article (5). Flushing system (1) according to Claim 1, characterized in that the overflow protection float (6) controls the flushing valve (4) in such a way that when a lower filling level is reached after overflow flushing has taken place, the flushing valve (4) is closed again. Flushing system (1) according to Claim 1 or 2, characterized in that the overflow protection float (6) floats up to the height of the upper filling level when the flushing tank (2) is filling and then acts on the flushing valve (4) based on the upper filling level being reached, so that the flushing valve (4) is opened. Flushing system (1) according to Claim 1 or 2, characterized in that the overflow protection float (6) rises up to an upper stop when the cistern (2) is filling, the buoyancy force of the overflow protection float (6) increasing with the rising water level in the cistern (2) and then acts on the flushing valve (4) when a predetermined lift force is reached, so that the flushing valve (4) is opened. Flushing system (1) according to any one of the preceding claims, characterized in that the flushing valve (4) has an inlet (7) which with a can be connected to the building's line network in such a way that the flushing valve (4) is supplied with flushing water under line pressure, the flushing valve (4) being connected to a first section (8) of a flushing line with a jet pump (9), the jet pump (9 ) has a venturi nozzle (10) with a suction opening (11) open towards the cistern (2), wherein when the flushing valve (4) is open, water under line pressure can be fed into the venturi nozzle (10) in such a way that the venturi nozzle (10) the suction opening (11) can be fed with water from the cistern (2) in a second section (12) of the flushing line leading to the sanitary item (5). Flushing system (1) according to one of the preceding claims, characterized in that the flushing valve (4) is connected to the filling valve (3) via a control line (13), wherein when the flushing valve (4) is open, the filling valve (3) is connected to a Control line (13) prevailing water pressure can be closed. Flushing system (1) according to one of Claims 5 to 6, characterized in that the flushing line (8) has a pipe interrupter (14) for separating drinking water from flushing water. Flushing system (1) according to one of the preceding claims 1 to 4, characterized in that the flushing valve (4) is a gravity flushing valve which has a valve body which can be controlled with the overflow float (6), the flushing water being drawn out of the Flushing cistern (2) drains. Flushing system (1) according to one of the preceding Claims 5 to 8, characterized in that a flushing valve according to Claims 5 to 7 and a flushing valve according to Claim 8 are arranged, one of the two flushing valves or both flushing valves being controllable with the overflow protection float (6). . Flushing system (1) according to one of the preceding claims, characterized in that the overflow protection float (6) has an opening element (19) which acts on a valve body of the flushing valve via an actuator element (23) and opens the valve body, and in that the overflow protection float (6 ) has a closing element (21) which acts on said latching element (10) via the actuator element (23), so that the valve body closes. Flushing system (1) according to claim 10, characterized in that means a latching element (20), the actuator element (23) is held in such a way that the valve body is held in the open position by the actuator element (23). Arrangement comprising a flushing system (1) according to one of the preceding claims and a sanitary article (5), in particular a toilet bowl or a urinal, wherein the flushing valve (4) can be used to feed flushing water to at least one inlet opening (15) in the sanitary article (2), so that flushing water can be fed into the sanitary article (2) via the inlet opening (15). Arrangement according to Claim 12, characterized in that the sanitary article (5) has a receiving space (16), a siphon section (17) adjoining the receiving space (16) and a drain pipe (18), said inlet opening (15) leading into the receiving space (16) and / or in the drain pipe (18) opens. Arrangement according to Claim 12 or 13, characterized in that the inlet opening (15) opening into the receiving space (16) is at the level of a functional overflow, the level for the safety overflow at which the flushing valve (4) being triggered by the overflow protection float (6) is opened, is above the inlet opening (15). Arrangement according to one of the preceding claims 12 to 14, characterized in that the cistern has two tank areas (27, 28), with a first flushing valve (4) for flushing the receiving space (16) in the first tank area (21) and in the second tank area (28) a second flushing valve (26) is provided for flushing into the drain pipe (18), one of the two flushing valves (4,26) or both flushing valves (4,26) being controllable with the overflow protection float (6). Method for operating a flushing system (1) according to one of the preceding claims, characterized in that when an upper filling level is reached, the overflow protection float (6) controls the flushing valve (4) in such a way that it is opened and flushing water flows out of the Flushing cistern (2) drains, and that when a lower filling level is reached, the overflow protection float (6) controls the flushing valve (4) so that it is closed.

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