Toilet cistern with bidet spray head and injector, and use thereof

Abstract

A WC cistern (1) with a wall (2) which forms a substantially cuboidal water tank (3). An intake (5) with which the water tank (3) can be filled is guided through the wall (2). A shutoff valve (7) is arranged in the intake (5), the shutoff valve interacting with a switch-off device (8) which triggers the shutoff valve (7) when a switch-off level (14) in the water tank (3) is reached. An injector (15) is arranged in the water tank (3) in a construction space (13) above the switch-off level (14). The outflow-side outlet (16) of the injector (15) is led out of the water tank (3).

Claims

1. A WC cistern (1), comprising: a wall (2) forming a water tank (3), an intake (5) which is guided through the wall (2) and with which the water tank (3) is adapted to be filled, a shutoff valve (7) arranged in the intake (5), a shutoff device (8), said shutoff valve interacting with the shutoff device (8) when a switch-off level (14) in the water tank (3) is reached, an injector (15), having an outflow-side outlet (16), is arranged in the water tank (3) in a construction space (13) above the switch-off level (14), wherein the injector (15), prevents backflow from the outlet (16) into the intake (5) and has a free jet section (27) which is open downward into the water tank (3), and the outflow-side outlet (16) is led out of the water tank (3), wherein the outlet (16) of the injector (15) leads out of the water tank (3) into a backflow-protected water outlet (17), which has an external thread (18) such that various devices are connectable to the water outlet (17).

2. The WC cistern (1) as claimed in claim 1, further comprising an overflow pipe (31) arranged in a drain (30) of the water tank (3), said overflow pipe projecting into an interior space of the water tank (3) to define a maximum filling level (32), and the injector (15) is arranged above the maximum filling level (32).

3. The WC cistern (1) as claimed in claim 1, wherein the injector (15) has, at an outflow-side end of the free jet section (27), a collecting opening (28) which is formed on a projection (29) protruding counter to a jet direction determined by the free jet section (27).

4. The WC cistern (1) as claimed in claim 1, wherein the injector (15) is switchable to off on an inflow side by a valve (25, 36).

5. The WC cistern (1) as claimed in claim 4, further comprising an actuating device (26, 39) for the valve (25, 36) that is fed from an electrical energy accumulator.

6. The WC cistern (1) as claimed in claim 5, wherein the energy accumulator is chargeable from a generator (38) arranged in the intake.

7. The WC cistern (1) as claimed in claim 4, wherein the valve is electrically actuable.

8. The WC cistern (1) as claimed in claim 1, wherein the injector (15) is fed from the intake (5).

9. The WC cistern (1) as claimed in claim 1, further comprising a cleaning unit (21) connected to the injector (15).

10. The WC cistern (1) as claimed in claim 9, wherein the cleaning unit is a shower which is switchable to off.

11. The WC cistern (1) as claimed in claim 9, wherein the cleaning unit (21) is connected to a backflow-protected water connection (19) of the injector.

12. The WC cistern (1) as claimed in claim 1, wherein the free jet section (27) extends horizontally.

13. The WC cistern (1) as claimed in claim 1, further comprising a feed line (24) of the injector (15) that is guided separately from the intake (5) into the water tank (3).

14. The WC cistern as claimed in claim 1, wherein a hose line (19), comprising a handheld sprayer (21) is connected to the water outlet (17).

15. A method of using the WC cistern (1) of claim 1, comprising connecting a backflow-protected water connection (19) to the outlet (17) of the injector (15).

16. The method as claimed in claim 15, further comprising connecting a cleaning unit (21) to the backflow-protected water connection (19).

17. A method of providing an additional water connection to a WC cistern having an intake (5) that is guided through a wall (2) forming a water tank (3), with which the water tank (3) is adapted to be filled, and a shutoff valve (7) arranged in the intake (5), said shutoff valve interacting with a shutoff device (8) when a switch-off level (14) in the water tank (3) is reached, the method comprising: arranging an injector (15) in the water tank (3) in a construction space (13) above the switch-off level (14), wherein the injector (15) has a free jet section (27) which is open downward into the water tank (3), and leading an outflow-side outlet (16) of the injector out of the water tank (3) to an external connection, wherein the injector (15) prevents backflow from the outlet (16) into the intake (5), wherein the outlet (16) of the injector (15) leads out of the water tank (3) into a backflow-protected water outlet (17), which has an external thread (18) and wherein a shower device, comprising a hose line (19) having a handheld sprayer (21), is connected to the water outlet (17).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained in more detail below using a number of advantageous exemplary embodiments with reference to the attached drawings. The examples here serve merely for clarification of the invention and are in no way limiting.

(2) In the drawings

(3) FIG. 1: shows a first embodiment of a WC cistern according to the invention with an external valve for the injector,

(4) FIG. 2: shows a second embodiment of a WC cistern according to the invention with an external valve for the injector and an outlet line through the cistern,

(5) FIG. 3: shows a third embodiment of a WC cistern according to the invention with an internal valve for the injector and an outlet line through the cistern,

(6) FIG. 4: shows a fourth embodiment of a WC cistern according to the invention with an internal valve for the injector,

(7) FIG. 5: shows a fifth embodiment of a WC cistern according to the invention with an internal valve for the injector with an outlet line through the cistern, and

(8) FIG. 6: shows a front wall element with a WC cistern according to FIG. 5.

DETAILED DESCRIPTION

(9) FIG. 1 shows a WC cistern 1 according to the invention with a wall 2 which, in the example, forms a substantially cuboidal water tank 3. In further exemplary embodiments, water tanks having different geometrical basic shapes are realized.

(10) An intake 5 with which the water tank 3 can be filled with water 6 is guided through the wall 2 in FIG. 1 on a narrow side 4. A shutoff valve 7 which interacts with a switch-off device 8 is arranged in the intake 5. This switch-off device 8 can have, for example, a float 9 which floats on the water 6 in the water tank 3 or floats in the water 6. When a switch-off level 14 in the water tank 3 is reached, the float 9 triggers the shutoff valve 7, and therefore no more water 6 flows in through the intake 5.

(11) Outside the WC cistern 1, the intake 5 is connected to a water connection 10, for example via a line 11. The water connection 10 has a shutoff valve 12 by which the water supply to the intake 5 can be interrupted from the outside.

(12) An injector 15 is arranged horizontally in the water tank 3 in a construction space 13 above the switch-off level 14. The outflow-side outlet 16 of the injector 15 is led out of the water tank 3 through a water outlet 17. The water outlet 17 lies above the switch-off level 14 and, in the example, has an external thread 18. In the example, a hose line 19, having a Shattaf shower 21 connected to the free end 20 thereof, is connected to the water outlet 17. Of course, other devices can also be connected to the hose line 19 or to the water outlet 17.

(13) In the example, the water outlet 17 is arranged on that side 22 of the wall 2 which lies opposite the intake 5. Of course, the water outlet 17 can also be arranged at a different location on the wall 2.

(14) The inlet 23 of the injector 15 is connected via an internal line 24 to a valve 25 arranged outside the WC cistern 1. The valve 25 is connected to the water connection 10 and has an actuating device 26 with which the valve 25 can be opened or closed. The inflow to the injector 15 can thereby be suppressed. In the example, the valve 25 is designed as a ball valve and the actuating device 26 as a lever.

(15) The injector 15 has a free jet section 27 which substantially prevents the backflow from the outlet 16 to the inlet 23. In the example, the free jet section 27 is oriented horizontally and is open downward into the water tank 3. Water flowing back through the outlet 16 therefore flows through said opening 43 into the water tank 3 and cannot pass into the inlet 23 of the injector. The injector 15 therefore brings about backflow protection for the water outlet 17.

(16) The free jet section 27 in the example also has a collecting opening 28 which is formed on a projection 29 protruding counter to a jet direction determined by the free jet section 27.

(17) An overflow pipe 31 which projects into an interior space of the water tank 3 in order to define a maximum level 32 is arranged in a drain 30 of the water tank 3. The injector 15 is preferably also arranged above the maximum level 32 in order to prevent the injector 15 from being filled with water 6 and therefore a separation between inlet 23 and outlet 16 no longer being provided.

(18) In addition, the WC cistern 1 has an outflow 33 for the flushing water and an actuation 34 (FIG. 6) for triggering the flushing operation, which outflow and actuation are known per se and are therefore not explained in more detail here.

(19) FIG. 2 shows a WC cistern 1 which substantially corresponds to the WC cistern 1 of FIG. 1. The statements regarding FIG. 1 can therefore also be read on the exemplary embodiment according to FIG. 2. For this purpose, the reference signs have been provided analogously to FIG. 1.

(20) However, in the exemplary embodiment according to FIG. 2, the outlet 16 of the injector 15 is led out of the water tank 3 via a closed line 35. FIG. 2 shows that the outlet 16 is led out through the lower wall of the water tank 3. In further exemplary embodiments, the line 35 can be guided at any other position. As a result, the water outlet 17 can be placed at a position adapted to the installation location.

(21) FIG. 3 shows an alternative embodiment of a WC cistern 1 according to the invention. The same reference signs are again used and therefore the explanations with respect to FIGS. 1 and 2 can be read on FIG. 3.

(22) However, in contrast to the embodiment of FIG. 2, this embodiment has an electrically actuated valve 36 in the line 24 to the injector 15, said valve being arranged within the construction space 13 above the maximum level 32. For the energy supply of the electrical valve 36, a generator 38 for generating electrical energy is arranged in the feed line 37. This generator 38 converts flow energy of the water into electrical energy. For this purpose, the generator 38 can have a water wheel which is driven by the water flow. The water wheel can be connected to a dynamo. The intake 5 for filling the water tank 3 is arranged downstream of said generator 38. Electrical energy is thereby generated during each flushing operation, i.e. during each filling operation. The WC cistern 1 can have an energy accumulator, for example a storage battery, in which excess electrical energy is stored. In further exemplary embodiments, the energy accumulator can be charged in a different manner, for example by energy harvesting.

(23) In order to actuate the electrical valve 36, a switch or pushbutton can be arranged on the WC cistern 1. In the example, the electrical valve 36 has a contactlessly activatable actuating device 39. For this purpose, there is a remote control 40 which has a trigger button 41. This remote control 40 can be connected to the actuating device 39 by radio or infrared light. The valve 36 can be switched on and off here via the trigger button 41. However, it can also have a time control, and therefore the valve 36 after opening is automatically closed after a selectable time.

(24) The embodiment shown in FIG. 4 is a combination of the embodiments of FIGS. 1 and 3. It has an electrical valve 36 according to FIG. 3 and a water outlet 17 according to FIG. 1.

(25) The embodiment in FIG. 5 is a variant of the embodiment of FIG. 3, wherein the intake 5 takes place here via an internal water connection 10.

(26) The WC cisterns of FIGS. 1 to 5 are each designed as independent units which are mounted hanging on a wall or standing on a WC.

(27) FIG. 6 finally shows a conventional front wall element 42 in which a WC cistern 1 according to FIG. 5 is arranged. The front wall element 42 serves for installation in a front wall installation. Such front wall elements are known per se, and therefore the further features of said front wall element 42 will not be discussed in more detail.

(28) The invention therefore provides a WC cistern 1 with a wall 2 which forms a substantially cuboidal water tank 3. An intake 5 with which the water tank 3 can be filled is guided through the wall 2. A shutoff valve 7 is arranged in the intake 5, said shutoff valve interacting with a switch-off device 8 which triggers the shutoff valve 7 when a switch-off level 14 in the water tank 3 is reached. An injector 15 is arranged in the water tank 3 in a construction space 13 above the switch-off level 14. The outflow-side outlet 16 of the injector 15 is led out of the water tank 3.

LIST OF REFERENCE SIGNS

(29) 1 WC cistern 2 Wall 3 Water tank 4 Narrow side 5 Intake 6 Water 7 Shutoff valve in the intake 8 Switch-off device 9 Float 10 Water connection 11 Line 12 Shutoff valve on the water connection 13 Construction space 14 Switch-off level 15 Injector 16 Outlet of the injector 17 Water outlet 18 External thread 19 Hose line 20 Free end 21 Shattaf shower 22 Opposite side 23 Inlet of the injector 24 Internal line to the injector 25 Valve 26 Actuating device 27 Free jet section 28 Collecting opening 29 Projection 30 Drain 31 Overflow pipe 32 Maximum level 33 Outflow 34 Actuation 35 Closed line 36 Electrical valve 37 Feed line 38 Generator 39 Contactless actuating device 40 Remote control 41 Trigger button 42 Front wall element