Flushing system

Abstract

A flushing system (1) comprises a cistern (2) with a first tank chamber (3) and a second tank chamber (4), a filling valve (5) for filling the cistern (2) with flushing water, a first flushing valve (6) arranged in the first tank chamber (3), a second flushing valve (7) arranged in the second tank chamber (4), and a sanitary article (8) with a receiving chamber (9), a first flushing opening (10) which can be supplied with flushing water via the first flushing valve (6), a second flushing opening (11) which can be supplied with flushing water via the second flushing valve (7), as well as a siphon section (12) adjoining the receiving chamber (9) and a drain section (13) adjoining the siphon section (12), wherein the first flushing valve (6) is a gravity flushing valve.wherein the rinsing water in the first tank chamber (3) flows out under the influence of gravity and wherein the second rinsing valve (7) is a pressure rinsing valve wherein the rinsing water in the second tank chamber (4) flows out under the influence of water pressure.

Description

TECHNICAL AREA

[0001] The present invention relates to a flushing system according to claim 1. STATE OF THE ART

[0002] Various flushing systems for toilets and urinals are known from the state of the art. A fundamental distinction is made between pressure flushing systems, in which the flushing water is brought into the toilet bowl or urinal by mains pressure, and gravity flushing systems, in which the flushing water is brought into the toilet bowl or urinal by the action of gravity.

[0003] WO 2016 / 016471 discloses a flushing system in which flushing water is drawn from the cistern into the toilet bowl or urinal via a Venturi nozzle. A disadvantage of WO 2016 / 016471 is that, due to the design of the Venturi nozzle, the flow rate of the flushing water is in some cases too low for efficient flushing of the siphon.

[0004] From DE 35 12 305 A1 a flushing system is known in which a sanitary article is supplied with flushing water via two tank rooms with different flushing mechanisms. PRESENTATION OF THE INVENTION

[0005] Based on this prior art, the invention is based on the objective of providing a rinsing system that overcomes the disadvantages of the prior art. In particular, a preferred objective of the invention is to provide a rinsing system that ensures more efficient rinsing.

[0006] This problem is solved by a flushing system according to claim 1. Accordingly, a flushing system comprises a cistern with a first tank compartment and a second tank compartment, a filling valve for filling the cistern with flushing water, a first flushing valve arranged in the first tank compartment, a second flushing valve arranged in the second tank compartment, and a sanitary article with a receiving chamber, 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 chamber and a drain section adjoining the siphon section. The first flushing valve is a gravity flushing valve, wherein the flushing water flows out of the first tank compartment under the influence of gravity, and the second flushing valve is a pressure flushing valve, wherein the flushing water flows out of the second tank compartment under the influence of water pressure.

[0007] The arrangement of the two flushing valves offers the advantage of optimizing the flushing process. The gravity flushing valve allows for a surge of flushing water, while the pressure flushing valve allows for pressurized flushing. The surge flushing ensures thorough rinsing of the siphon section, while the pressurized flushing provides a more effective surface cleaning of the receiving area.

[0008] Preferably, the flushing water is supplied to the sanitary item via the two flushing valves at different locations, which further optimizes the flushing process.

[0009] The filling valve is preferably directed into the first tank compartment such that the first tank compartment is filled through the filling valve, and the first tank compartment has an overflow edge over which, when the first tank compartment is filled and continues to be filled, the flushing water can flow from the first tank compartment into the second tank compartment. The arrangement of the overflow edge allows both tank compartments to be filled with a single filling valve, thus making the filling of the cistern more efficient.

[0010] Preferably, the second flushing opening of the sanitary fixture is located below the overflow edge when viewed in its installed position, with the height of the second flushing opening defining an overflow height that lies above a nominal water level in the second tank compartment. This has the advantage that if the fill valve malfunctions and can no longer be closed, the flushing water flowing into the first tank compartment can flow over the overflow edge into the second tank compartment and from there through the second flushing opening into the receiving chamber of the sanitary fixture.

[0011] An example of a flushing system, in addition to overcoming the disadvantages of the prior art, solves the problem of efficiently filling a cistern. Accordingly, a flushing system comprises a cistern with a first tank compartment and a second tank compartment, a filling valve for filling the cistern with flush water, a first flush valve located in the first tank compartment, a second flush valve located in the second tank compartment, and a sanitary fitting with a receiving chamber, a first flushing opening which can be supplied with flush water via the first flush valve, a second flushing opening which can be supplied with flush water via the second flush valve, as well as a siphon section adjoining the receiving chamber and a drain section adjoining the siphon section.The filling valve is directed into the first tank compartment, such that the first tank compartment is filled through the filling valve, and the first tank compartment has an overflow edge over which, when the first tank compartment is filled and the first tank compartment is continuously filled, the rinse water can be directed from the first tank compartment into the second tank compartment.

[0012] The arrangement of the overflow edge allows both tank compartments to be filled with a single filling valve, making the filling of the cistern more efficient.

[0013] Preferably, the second flushing opening of the sanitary fixture is located below the overflow edge when viewed in its installed position, with the height of the second flushing opening defining an overflow height that lies above a nominal water level in the second tank compartment. This has the advantage that if the fill valve malfunctions and can no longer be closed, the flushing water flowing into the first tank compartment can flow over the overflow edge into the second tank compartment and from there through the second flushing opening into the receiving chamber of the sanitary fixture.

[0014] In the following, further advantageous embodiments for the flushing system according to claim 1 and for the flushing system according to the example will be described.

[0015] The overflow edge is positioned in such a way that the flushing water flows over the overflow edge, that is, it flows over the overflow edge above the overflow edge.

[0016] Preferably, when the cistern is completely full, the nominal water level in the first tank compartment is higher than the nominal water level in the second tank compartment. This offers the advantage that a higher water column, and thus greater potential energy, can be provided for the gravity flushing valve.

[0017] Preferably, the first tank compartment is located entirely within the second tank compartment. That is, the second tank compartment surrounds the first tank compartment on its outer surface. This offers the advantage of allowing the overflow edge to be as long as possible, thus enabling efficient filling of the second tank compartment.

[0018] Preferably, the overflow edge extends completely around the first tank compartment.

[0019] Preferably, the volume of the first tank compartment is smaller than the volume of the second tank compartment.

[0020] 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 chamber. This allows a surge of water to be supplied into the drain section via the gravity flushing valve, creating a suction effect on the siphon section and thus assisting in the flushing of the siphon. The flushing of the surfaces of the receiving chamber can be achieved via the pressure flushing valve.

[0021] Preferably, during a flushing process, the first flushing valve is opened after the second flushing valve and / or the first flushing valve is closed before the second flushing valve. The surge flushing through the gravity flushing valve thus takes place over a shorter period than flushing via the pressure flushing valve.

[0022] Preferably, the first flushing valve has an actuating float, wherein the actuating float floats on the flushing water in the second tank compartment, such that the first flushing valve can be actuated based on the water level in the second tank compartment. This allows for very simple adjustment of the flushing sequence. Preferably, the first flushing opening is located at the bottom of the first tank compartment, and the first flushing valve has a valve body which can be lifted 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.

[0023] Preferably, the second flushing valve has an inlet which can be connected to a building-side pipe network, such that the second flushing valve is supplied with flushing water under line pressure, wherein the flushing valve is connected to a first section of a flushing line with a jet pump, wherein the jet pump has a Venturi nozzle with a suction opening open towards the cistern, wherein, with the flushing valve open, water under line pressure can be fed into the Venturi nozzle, such that water from a second water tank can be fed into a second section of the flushing line leading to the sanitary fixture via the suction opening through the Venturi nozzle.

[0024] Preferably, the flushing line has a pipe interrupter for separating drinking water from flushing water.

[0025] Preferably, the pipe interrupter is located above the overflow edge when viewed in its installed position, so that the pipe interrupter does not come into contact with the flushing water in the cistern.

[0026] Preferably, when viewed in its installed position, the cistern is located below an upper edge that closes off the sanitary article at the top.

[0027] Further embodiments are specified in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Preferred embodiments of the invention are described below with reference to the drawings, which serve only for illustration and are not to be interpreted restrictively. The drawings show: Fig. 1 a partially cutaway perspective view of a flushing system according to an embodiment of the present invention; Fig. 2 a top view of the flushing system according to Figure 1; Fig. 3 a further sectional view of the flushing system according to the preceding figures; Fig. 4 a further sectional view of the flushing system according to the preceding figures; and Fig. 5 a perspective view of the cistern of a flushing system according to the preceding figures. DESCRIPTION OF PREFERRED EXECUTION FORMS

[0029] 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 compartment 3 and a second tank compartment 4, a filling valve 5 for filling the cistern 2 with flushing water, a first flushing valve 6 arranged in the first tank compartment 3, a second flushing valve 7 arranged in the second tank compartment 4, and a sanitary fixture 8. Flushing water can be supplied to the sanitary fixture 8 via the flushing valves 6 and 7. Preferably, the flushing water is supplied to the sanitary fixture 8 at different locations.

[0030] The sanitary article 8, in the embodiment shown, is a toilet bowl. However, the sanitary article 8 can also be a urinal. The sanitary article 8 comprises a receiving chamber 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 is connected to the receiving chamber 9. A drain section 13 is connected to the siphon section 12.

[0031] In the illustrated embodiment, the first flushing valve 6 is a gravity flushing valve, wherein the flushing water flows out of the first tank chamber 3 by the action of gravity. The second flushing valve 7 is a pressure flushing valve, wherein the flushing water flows out of the second tank chamber 4 under the action of water pressure.

[0032] In the illustrated embodiment, the filling valve 5 is directed into the first tank compartment 3. The filling valve 5 thus fills the first tank compartment 3 with rinse water. The first tank compartment 3 has an overflow edge 14, over which, when the first tank compartment 3 is full and when it is further filled, the rinse water flows from the first tank compartment 3 into the second tank compartment 4.

[0033] In another embodiment, not shown, the flushing system 1 is designed without an overflow edge 14. In this embodiment, the two tank compartments 3, 4 are filled via the filling valve 5. In a further embodiment, also not shown, the flushing valves can be provided differently.

[0034] In the illustrated embodiment, the first flushing valve 6 is associated with the first flushing opening 10. In this embodiment, the first flushing opening 10 opens into the drain section 13. A surge of 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 lifted by a valve seat 17 so that the flushing water in the first tank chamber 3 can be fed into the drain section 13. The valve seat 17 is preferably located at the lowest point of the first tank chamber 3.

[0035] The first flushing valve 6 has an actuating float 15, which can be used to control the flushing valve. The actuating float 15 floats on the flushing water in the second tank compartment 4, such that the first flushing valve 6 can be actuated based on the water level in the second tank compartment 4.

[0036] In the illustrated embodiment, the second flushing valve 7 is, as mentioned, assigned to the second flushing opening 11. The second flushing opening 11 opens into the receiving chamber 9 and ensures a surface flush of the receiving chamber 9.

[0037] 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 mains 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 open towards the cistern 2. When the flushing valve 7 is open, water under mains pressure can be fed into the Venturi nozzle 21, such that water from the second water tank 4 can be fed into a second section 23 of the flushing line leading to the sanitary fitting 8 via the Venturi nozzle 21 through the suction opening 22. A pipe interrupter 24 is also arranged in the flushing line.

[0038] The second flushing valve 7 is actuated via an actuating element 30. The flushing valve 7 can be closed again by means of a float. For example, via the actuating float 15 mentioned herein, which also acts on the first flushing valve 6. The actuating float 15 acts on the first flushing valve 6 via a float bridge 31.

[0039] In a preferred flushing regime, the second flushing valve 7 is opened in a first step, allowing flushing water to flow out of the second tank compartment 4. When a predetermined water level is reached in the second tank compartment 4, the first flushing valve 6 is opened, allowing flushing water to flow out of the first tank compartment 3. The flushing water from the first tank compartment 3 flows out in a surge. As soon as the first tank compartment 3 is empty, the first flushing valve 6 closes again. The outflow from the second tank compartment 4 continues. The second flushing valve 7 closes as soon as the second tank compartment 4 is empty. The term "emptied" essentially means emptying to a specific water level or complete emptying. After flushing, the cistern 2 is refilled via the filling valve 5.

[0040] In the illustrated embodiment, the filling valve 5 has a float 26, which opens and closes the filling valve 5. In this embodiment, the float 26 is controlled by the water level in the second tank compartment 4. As mentioned, the filling valve 5 fills the first tank compartment 3. To fill the first tank compartment 3, the filling valve 5 extends into the first tank compartment 3 via a connecting pipe 27. The connecting 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 pipe network. As soon as the rinse water in the second tank compartment 4 reaches the desired fill level, the float 26 closes the filling valve 5 accordingly.

[0041] In the illustrated embodiment, 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 such that the filling valve 5 remains closed.

[0042] Based on the view of the Figure 3 The different water levels are explained in more detail below. The overflow edge 14 is located above the second flushing opening 11, which leads into the receiving chamber 9. In the event of a defect in the filling valve, water can flow into the receiving chamber 9 via the flushing opening 10. The aforementioned pipe interrupter 24 is located above the overflow edge 14. The nominal water level in the first tank chamber 3 is higher than the nominal water level in the second tank chamber 4. The nominal water level in the second tank chamber 3 is below the second flushing opening 11. REFERENCE MARK LIST

[0043] 1 Flushing system 27 transition pipe 2 cistern 28 admission 3 first tank room 29 Control line 4 second tank room 30 Actuating element 5 Filling valve 31 Floating bridge 6 first flushing valve 7 second flushing valve 8 Sanitary ware 9 Recording room 10 first flushing opening 11 second flushing openings 12 Siphon section 13 Drainage section 14 Overflow edge 15 Active swimmer 16 Valve body 17 valve seat 18 inlet 19 first section 20 jet pump 21 Venturi nozzle 22 Intake opening 23 second section 24 Pipe interrupter 25 upper edge 26 swimmer

Claims

1. Flushing system (1) comprising a flushing tank (2) with a first tank chamber (3) and a second tank chamber (4), a filling valve (5) for filling the flushing tank (2) with flushing water, a first flushing valve (6) arranged in the first tank chamber (3), a second flushing valve (7) arranged in the second tank chamber (4), and a sanitary article (8) with a receiving chamber (9), a first flush opening (10) which can be supplied with flushing water via the first flushing valve (6), a second flush opening (11) which can be supplied with flushing water via the second flushing valve (7), and a siphon section (12) connected to the receiving chamber (9) and a drain section (13) connected to the siphon section (12), wherein the first flushing valve (6) is a gravity flushing valve, wherein the flushing water in the first tank chamber (3) flows out under the effect of gravity, and wherein the second flushing valve (7) is a pressure flushing valve, wherein the flushing water in the second tank chamber (4) flows out under the effect of water pressure of the pressure flushing valve.

2. Flushing system (1) according to claim 1, characterized in that the filling valve (5) is directed into the first tank chamber (3) in such a way that the first tank chamber (3) is filled through the filling valve (5), and that the first tank chamber (3) comprises an overflow edge (14) over which, when the first tank chamber is filled and further filling of the first tank chamber (3) takes place, the flushing water can be guided from the first tank chamber (3) into the second tank chamber (4).

3. Flushing system (1) according to claim 2, characterized in that the second flush opening (11) of the sanitary article (8) is located below the overflow edge (14) when viewed in the installed position, the height of the second flush opening (11) defining an overflow height which lies above a nominal water level in the second tank chamber (4).

4. Flushing system (1) according to one of the preceding claims, characterized in that when the flushing tank (2) is completely filled, the nominal water level in the first tank chamber (3) lies above the nominal water level in the second tank chamber (4); and / or that the first tank chamber (3) is completely located within the second tank chamber (4).

5. Flushing system (1) according to one of the preceding claims, characterized in that the overflow edge (14) extends completely around the first tank chamber (3).

6. Flushing system (1) according to one of the preceding claims, characterized in that the volume of the first tank chamber (3) is smaller than the volume of the second tank chamber (4).

7. Flushing system (1) according to one of the preceding claims, characterized in that the first flushing valve (6) and the first flush opening (10) are designed such that the flushing water can be discharged into the drain section (13) and that the second flushing valve (7) and the second flush opening (11) are designed such that the flushing water can be discharged into the receiving chamber (9).

8. Flushing system (1) according to one of the preceding claims, characterized in that during a flushing operation, with respect to time, the first flushing valve (6) is opened after the second flushing valve (7) and / or the first flushing valve (6) is closed before the second flushing valve (7).

9. Flushing system (1) according to one of the preceding claims, characterized in that the first flushing valve (6) comprises an actuating float (15), wherein the actuating float (15) floats on the flushing water in the second tank chamber (4) in such a way that the first flushing valve (6) can be actuated based on the water level in the second tank chamber (4).

10. 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 chamber (3) and in that the first flushing valve (6) comprises 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).

11. Flushing system (1) according to claim 10, characterized in that the first flush opening (10) opens into the drain section (13) after the siphon section (12).

12. Flushing system (1) according to one of the preceding claims, characterized in that the second flushing valve (7) has an inlet (18) which can be connected to a building-side pipe network in such a way that the second flushing valve (7) is supplied with flushing water under pipe pressure, wherein the flushing valve (7) is connected to a first section (19) of a flushing pipe with a jet pump (20), wherein the jet pump (20) comprises a venturi nozzle (21) with a suction opening (22) open toward the flushing tank (2), wherein, when the flushing valve (7) is open, water can be fed into the venturi nozzle (21) under pipe pressure in such a way that with the venturi nozzle (21) water can be fed from the second water tank (4) through the suction opening (22) into a second section (23) of the flushing pipe leading to the sanitary article (8).

13. Flushing system (1) according to claim 12, characterized in that the flushing pipe comprises a pipe interrupter (24) for separating drinking water from flushing water.

14. Flushing system (1) according to one of the preceding claims, characterized in that the flushing tank (2), as seen in the installed position, is located below a top edge (25) which closes off the sanitary article (8) at the top.

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