EP4095323B1 - Flushing system - Google Patents

Description

TECHNICAL FIELD

The present invention relates to a flushing system according to claim 1.

STATE OF THE ART

Various flushing systems for toilets and urinals are known from the prior art. A fundamental distinction must be made between pressure flushing, in which the flushing water is brought into the toilet bowl or urinal using mains pressure, and gravity flushing, in which the flushing water is brought into the toilet bowl or urinal under the effect of gravity.

The WO 2016/016471 discloses a flushing system in which flushing water is brought from the cistern into the toilet bowl or urinal using a Venturi nozzle. Disadvantageous to the WO 2016/016471 is that the volume flow of the rinsing water is in some cases too small for efficient rinsing of the siphon due to the design of the Venturi nozzle.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention is based on the object of providing a flushing system which overcomes the disadvantages of the prior art. In particular, it is a preferred object of the invention to provide a flushing system which ensures more efficient flushing.

The flushing system according to claim 1 solves, in addition to the task of overcoming the disadvantages of the prior art, the task of efficiently filling a cistern. Accordingly, a flushing system comprises a cistern with a first tank space and a second tank space, a filling valve for filling the cistern with flushing water, a first flushing valve arranged in the first tank space, a second flushing valve arranged in the second tank space, and a sanitary article with a receiving space, a first flushing opening, which can be supplied with flushing water via the first flushing valve, a second flushing opening, which can be supplied with flushing water via the second flushing valve, as well as a siphon section adjoining the receiving space and a drain section adjoining the siphon section. The filling valve is directed into the first tank space, such that the first tank space is filled by the filling valve, and the first tank space has an overflow edge over which the flushing water flows from the first tank space when the first tank space is filled and the first tank space is filled further or continuously can be guided into the second tank room.

By arranging the overflow edge, both tank spaces can be filled with a single filling valve, which makes filling the cistern more efficient.

Preferably, when viewed in the installed position, the second flushing opening of the sanitary article is located below the overflow edge, the height of the second flushing opening defining an overflow height, which overflow height is above a nominal water level in the second tank space. This has the advantage that if the filling valve is defective and can no longer be closed, the flushing water flowing into the first tank space can flow over the overflow edge into the second tank space and from there via the second flushing opening into the receiving space for the sanitary item.

Further advantageous embodiments for the flushing system according to claim 1 will now be described below.

The overflow edge is located in such a way that the flushing water flows over the overflow edge, that is to say, flows out over the overflow edge above the overflow edge.

Preferably, when the cistern is completely filled, the nominal water level in the first tank space is above the nominal water level in the second tank space. This has the advantage that a higher water column, i.e. greater potential energy, can be provided for the gravity flushing valve.

Preferably, the first tank space lies entirely in the second tank space. That is, the The second tank room surrounds the first tank room on its outside. This has the advantage that the length of the overflow edge can be made as large as possible, which allows the second tank space to be filled efficiently.

Preferably, the overflow edge extends completely around the first tank space.

Preferably, the volume of the first tank space is smaller than the volume of the second tank space.

Preferably, the first flushing valve and the first flushing opening are designed such that the flushing water can be introduced into the drain section and the second flushing valve and the second flushing opening are designed such that the flushing water can be introduced into the receiving space. As a result, a surge-like flushing can be provided into the drain section via the gravity flushing valve, which creates a suction effect on the siphon section and can support the flushing of the siphon. The surfaces of the receiving space can be flushed using the pressure flushing valve.

During a flushing process, the first flushing valve is preferably opened after the second flushing valve and/or the first flushing valve is closed before the second flushing valve. The surge-like flushing through the gravity flushing valve therefore takes place over a shorter period of time than flushing via the pressure flushing valve.

Preferably, the first flushing valve has an actuation float, wherein the actuation float floats on the flushing water in the second tank space, such that the first flushing valve can be actuated based on the water level in the second tank space. This makes it very easy to coordinate the flushing sequence.

Preferably, the first flushing opening is arranged at the bottom of the first tank space and the first flushing valve has a valve body which can be raised from a closed position to a flushing position by a valve seat surrounding the flushing opening.

Preferably, the first flushing opening opens into the drain section after the siphon section.

Preferably, the second flushing valve has an inlet which is connected to a Building-side line network can be connected, such that the second 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 having a Venturi nozzle with a suction opening open towards the cistern, wherein at With an open flushing valve, water can be fed into the Venturi nozzle under line pressure, such that with the Venturi nozzle, water can be fed from the second water tank into a second section of the flushing line leading to the sanitary item via the suction opening.

The flushing line preferably has a pipe breaker for class separation of drinking water and flushing water. When viewed in the installed position, the pipe interrupter is preferably located above the overflow edge, so that the pipe interrupter does not come into contact with the flushing water in the cistern.

When viewed in the installed position, the cistern is preferably located below an upper edge which closes off the sanitary item at the top.

Further embodiments are specified in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine teilweise geschnittene Perspektivansicht eines Spülsystems nach einer Ausführungsform der vorliegenden Erfindung;

Fig. 2.

eine Draufsicht des Spülsystems nach Figur 1;

Fig. 3

eine weitere Schnittdarstellung des Spülsystems nach den vorhergehenden Figuren;

Fig. 4

eine weitere Schnittdarstellung des Spülsystems nach den vorhergehenden Figuren; und

Fig. 5

eine perspektivische Darstellung des Spülkastens eines Spülsystems nach den vorhergehenden Figuren.

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

Fig. 1

a partially sectioned perspective view of a flushing system according to an embodiment of the present invention;

Fig. 2.

a top view of the flushing system Figure 1 ;

Fig. 3

a further sectional view of the flushing system according to the previous figures;

Fig. 4

a further sectional view of the flushing system according to the previous figures; and

Fig. 5

a perspective view of the cistern of a flushing system according to the previous figures.

DESCRIPTION OF PREFERRED EMBODIMENTS

The figures show a preferred embodiment of a flushing system 1 according to the present invention. The flushing system 1 comprises a cistern 2 with a first tank space 3 and a second tank space 4, a filling valve 5 for filling the cistern 2 with flushing water, a first flushing valve 6 arranged in the first tank space 3, a second flushing valve 7 arranged in the second tank space 4 and a Sanitary items 8. Rinsing water can be supplied to the sanitary items 8 via the flushing valves 6, 7. The rinse water is preferably supplied to the sanitary article 8 at different locations.

The sanitary article 8 is a toilet bowl in the embodiment shown. The sanitary article 8 can also be a urinal. The sanitary article 8 comprises a receiving space 9, a first flushing opening 10, which can be supplied with flushing water via the first flushing valve 6, and a second flushing opening 11, which can be supplied with flushing water via the second flushing valve 7. A siphon section 12 also adjoins the recording space 9. The siphon section 12 is followed by a drain section 13.

In the embodiment shown, the first flushing valve 6 is a gravity flushing valve, with the flushing water flowing out in the first tank space 3 under the effect of gravity. The second flushing valve 7 is a pressure flushing valve, with the flushing water flowing out in the second tank space 4 under the effect of water pressure.

In the embodiment shown, the filling valve 5 is directed into the first tank space 3. The filling valve 5 therefore fills the first tank space 3 with rinse water. The first tank space 3 has an overflow edge 14, over which the flushing water flows from the first tank space 3 into the second tank space 4 when the first tank space 3 is filled and when the first tank space 3 is further filled.

In another embodiment, not shown, the flushing system 1 is designed without an overflow edge 14. Here, the two tank spaces 3, 4 are filled in a different way using the filling valve 5. In a further embodiment, also not shown, the flushing valves can be provided differently.

In the embodiment shown, the first flushing valve 6 is the first flushing opening 10 assigned. In the embodiment shown, the first flushing opening 10 opens into the drain section 13. A surge-like flushing can be provided into the drain section 13 via the first flushing valve 6. The first flushing valve 6 preferably comprises a valve body 16, which can be raised by a valve seat 17, so that the flushing water in the first tank space 3 can be fed to the drain section 13. The valve seat 17 is preferably arranged at the lowest point of the first tank space 3.

The first flushing valve 6 has an actuation float 15 with which the flushing valve can be controlled. The actuation float 15 floats on the flushing water in the second tank space 4, such that the first flushing valve 6 can be actuated based on the water level in the second tank space 4.

In the embodiment shown, the second flushing valve 7, as mentioned, is assigned to the second flushing opening 11. The second flushing opening 11 opens into the receiving space 9 and ensures surface rinsing of the receiving space 9.

The second flushing valve 7 has an inlet 18, which can be connected to a building-side pipe network, such that the second flushing valve 7 is supplied with flushing water under line pressure. The flushing valve 7 is connected to a first section 19 of a flushing line with a jet pump 20, the jet pump 20 having a Venturi nozzle 21 with a suction opening 22 that is open towards the cistern 2. When the flushing valve 7 is open, water can be fed into the Venturi nozzle 21 under line pressure, such that with the Venturi nozzle 21, water from the second water tank 4 can be fed into a second section 23 of the flushing line leading to the sanitary article 8 via the suction opening 22. A pipe interrupter 24 is also arranged in the flushing line.

The second flushing valve 7 is actuated via an actuating element 30. The flushing valve 7 can be closed again using a float. For example, via the actuation float 15 mentioned here, which also acts on the first flushing valve 6. The actuation float 15 acts on the first flushing valve 6 via a float bridge 31.

In a preferred flushing regime, the second flushing valve 7 is opened in a first step so that flushing water flows out of the second tank space 4. When a predetermined water level in the second tank space 4 is reached, the first flushing valve 6 is opened, so that flushing water flows out of the first tank space 3. The flushing water from the first tank room 3 flows out like a gush. As soon as the first tank space 3 is emptied, the first flushing valve 6 closes again. The outflow from the second tank room 4 continues. The second flushing valve 7 closes as soon as the second tank space 4 is emptied. The expression emptied essentially means emptying to a certain water level or complete emptying. After flushing, the cistern 2 is filled again via the filling valve 5.

In the embodiment shown, the filling valve 5 has a float 26, via which the filling valve 5 can be opened or closed. In the embodiment shown, the float 26 is controlled by the water level in the second tank space 4. As mentioned, the filling valve 5 fills the first tank space 3. To fill the first tank space 3, the filling valve 5 projects into the first tank space 3 with a transition pipe 27. The transition pipe 27 has the outlet of the filling valve 5. The filling valve 5 also has an inlet 28, which can be connected to a line network. As soon as the flushing water in the second tank space 4 has reached the desired level, the filler valve 5 is closed accordingly by the float 26.

In the embodiment shown, the filling valve 5 is in contact with the first flushing valve 6 via a control line 29. When the first flushing valve 6 is open, the filling valve 5 is controlled via the control line 29 in such a way that the filling valve 5 remains closed.

Based on the view of Figure 3 The different water levels are explained in more detail. The overflow edge 14 lies above the second flushing opening 11, which leads into the receiving space 9. If the filling valve is defective, water can flow into the receiving space 9 via the flushing opening 10. Above the overflow edge 14, said pipe interrupter 24 is arranged. The nominal water level in the first tank room 3 is higher than the nominal water level in the second tank room 4. The nominal water level in the second tank room 3 is below the second flushing opening 11.

REFERENCE SYMBOL LIST

1 Flushing system 27 Transition pipe 2 cistern 28 entry 3 first tank room 29 Control line 4 second tank room 30 Actuator 5 filling valve 31 Float bridge 6 first flush valve 7 second flush valve 8th Sanitary ware 9 Recording room 10 first flush opening 11 second flushing openings 12 Siphon section 13 drain section 14 Overflow edge 15 Actuation float 16 Valve body 17 Valve seat 18 inlet 19 first section 20 jet pump 21 Venturi nozzle 22 Intake opening 23 second part 24 Pipe breaker 25 upper edge 26 swimmer

Claims (13)

1. Flushing system (1) comprising

   a cistern (2) with a first tank compartment (3) and a second tank compartment (4),

   a filling valve (5) for filling the cistern (2) with flushing water,

   a first flush valve (6) arranged in the first tank compartment (3),

   a second flush valve (7) arranged in the second tank compartment (4), and

   a sanitary article (8) with a receiving compartment (9), a first flush opening (10), which can be supplied with flush water via the first flush valve (6), a second flush opening (11), which can be supplied with flush water via the second flush valve (11), as well as a siphon section (12) adjoining the receiving compartment (9) and a drain section (13) adjoining the siphon section (12),

   wherein the filling valve (5) is directed into the first tank compartment (3) in such a way that the first tank compartment (3) is filled through the filling valve (5), and

   wherein the first tank compartment (3) has an overflow edge (14), via which the rinsing water can be guided from the first tank compartment (3) into the second tank compartment (4) when the first tank compartment (3) is filled and the first tank compartment (3) is further filled.
2. Flushing system (1) according to claim 1, characterized in that the second flush opening (11) of the sanitary article (8) lies below the overflow edge (14) when viewed in the installed position, the height of the second flush opening (11) defining an overflow height, which overflow height lies above a nominal water level in the second tank compartment (4).
3. Flushing system (1) according to one of the preceding claims, characterized in that, when the cistern (2) is completely filled, the nominal water level in the first tank compartment (3) is above the nominal water level in the second tank compartment (4); and/or in that the first tank compartment (3) lies completely in the second tank compartment (4).
4. Flushing system (1) according to one of the preceding claims, characterized in that the overflow edge (14) extends completely around the first tank compartment (3).
5. Flushing system (1) according to one of the preceding claims, characterized in that the volume of the first tank compartment (3) is smaller than the volume of the second tank compartment (4).
6. Flushing system (1) according to one of the preceding claims, characterized in that the first flush valve (6) and the first flush opening (10) are designed such that the flushing water can be introduced into the drain section (13) and in that the second flush valve (7) and the second flush opening (11) are designed such that the flushing water can be introduced into the receiving compartment (9).
7. Flushing system (1) according to one of the preceding claims, characterized in that, during a flushing process, the first flush valve (6) is opened after the second flush valve (7) and/or in that the first flush valve (6) is closed before the second flush valve (7).
8. Flushing system (1) according to one of the preceding claims, characterized in that the first flush valve (6) has an actuating float (15), wherein the actuating float (15) floats on the flushing water in the second tank compartment (4) in such a way that the first flush valve (6) can be actuated based on the water level in the second tank compartment (4).
9. Flushing system (1) according to one of the preceding claims, characterized in that the first flush opening (10) is arranged at the bottom of the first tank compartment (3) and in that the first flush valve (6) has a valve body (16) which can be lifted from a closed position into a flushing position by a valve seat (17) surrounding the flush opening (10).
10. Flushing system (1) according to claim 9, characterized in that the first flush opening (10) opens into the drain section (13) after the siphon section (12).
11. Flushing system (1) according to one of the preceding claims, characterized in that the second flush valve (7) has an inlet (18) which can be connected to a pipe network on the building side in such a way that the second flush valve (7) is supplied with flush water under line pressure, the flush valve (7) being connected to a first section (19) of a flush line with a jet pump (20), wherein the jet pump (20) has a Venturi nozzle (21) with a suction opening (22) open towards the flushing cistern (2), wherein water can be fed into the Venturi nozzle (21) under line pressure when the flush valve (7) is open, such that water from the second tank compartment (4) can be fed into a second section (23) of the flushing line leading to the sanitary article (8) via the suction opening (22) using the Venturi nozzle (21).
12. Flushing system (1) according to claim 11, characterized in that the flushing line has a pipe interrupter (24) for class separation of drinking water from flushing water.
13. Flushing system (1) according to one of the preceding claims, characterized in that the cistern (2), viewed in the installation position, is located below an upper edge (25) which closes off the sanitary article (8) at the top.

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