The invention relates to a flushing flow distributor for a flushing cistern, having a first channel which is to be connected to a discharge of the flushing cistern, and a second and a third channel which are in each case to be connected to a toilet bowl and into which the water of the first channel is distributed during flushing.
A flushing flow distributor of this type has been disclosed in the prior art, for example in DE 27 007 81 A. With this, the water in a conduit connected to a toilet bowl is divided in such a manner that some of the flushing water is supplied to a flushing channel of the toilet bowl and some of the water is supplied to a nozzle which is arranged in the siphon of the toilet bowl and, during flushing, brings about a thrust effect which enables the water level in the outflow channel to rise, as a result of which the content of the siphon is then sucked out. The water emerging from the flushing channel of the toilet bowl cleans the inside of the bowl. Therefore, during a flushing process, some of the water cleans the inside of the toilet bowl and some of the water accelerates the water in the siphon of the toilet bowl. In order to refill the emptied siphon after flushing, a storage pocket is provided which is filled with water during the flushing process via an outlet opening of a water conduit, the water then draining off towards the end of the flushing process and refilling the siphon. The abovementioned division of the water takes place in a conduit junction which is arranged in the toilet bowl above the storage pocket.
The invention is based on the object of providing a flushing flow distributor of the type mentioned which permits a flushing action which is at least ample and uses even less water.
The object is achieved with a flushing flow distributor of the generic type by the first channel outputting the water to the two other channels through a nozzle. The flushing flow distributor according to the invention permits an exact distribution of the water into the two channels connected downstream. In particular, the pressure in these two channels can thereby be set precisely. In addition, it is possible, by adjusting the nozzle, to set the division of the water flow into the two water flows connected downstream. The water which is to be distributed can therefore be supplied in a specific manner to the two channels, with the result that a good flushing action can be achieved with even less water.
The flushing flow distributor according to the invention is suitable in particular for a pressurized flushing cistern having a pressure tank in which the flushing water is stored under pressure. The flushing flow distributor according to the invention is suitable in particular for distributing water from a pressurized flushing tank of this type. The water from a pressurized flushing tank of this type can then be supplied directly to the conduit which leads to the nozzle in the siphon. The remaining water can then be used for flushing the flushing edge.
One particularly advantageous embodiment of the flushing flow distributor is produced if, according to a development of the invention, the nozzle is a free jet nozzle. This can be designed in a particularly simple manner such that the flushing flow distributor serves at the same time as a pipe interrupter. A pipe interrupter of this type prevents water from being sucked out of the toilet bowl into the supply conduit if there is a negative pressure in the supply conduit.
According to one development of the invention, the two channels connected downstream of the nozzle are arranged coaxially with each other. The nozzle is preferably likewise arranged coaxially with respect to these channels, specifically in such a manner that the water from this nozzle flows directly to an opening of the inner channel. This inner channel is then preferably connected to the nozzle of the siphon. As a result, a comparatively high pressure which enables an acceleration of the siphon water can be built up in this channel leading to the nozzle. The pressure and the distribution can be set in a simple manner by adjusting the nozzle in the axial direction.
According to a development of the invention, provision is made for the nozzle to have a conical orifice, and for a mouth of a channel arranged downstream to project into this conical orifice. This permits a distribution which can be set particularly precisely.
According to a development of the invention, the water from the nozzle is supplied to a pipe which has a funnel-shaped opening and is preferably designed as a diffuser. This makes it largely possible to prevent a pressure surge and in addition, by expansion of the water in the diffuser, enables an even higher pressure to build up.
The invention also relates to a flushing cistern having a flushing flow distributor according to the invention. The flushing cistern is preferably a pressurized flushing cistern with a pressure tank. The combination of this pressurized flushing cistern with the flushing flow distributor according to the invention permits particularly effective flushing with little water. In addition, the space required is particularly small, with the result that a flushing device requiring particularly little space can be produced.
The invention also relates to a toilet system having a flushing flow distributor according to the invention.
Exemplary embodiments of the invention are explained in greater detail below with reference to the drawing, in which:
FIGS. 5+6 show longitudinal sections through flushing flow distributors according to further variants.
The flushing flow distributor 1 shown in
Arranged below the nozzle 17 are two pipes 28 and 29 which are arranged co-axially with each other and which form an inner second channel 24 and a third outer channel 25. The second channel 24 is separated from the first channel 21 via a conical intermediate space 30 and likewise runs vertically and axially parallel to the first channel 21. The pipe 28 has an upper opening 26 which projects into the nozzle mouth 22 and is situated, according to
The pipe 29 is connected at a lower end to the pipe 28 by means of a seal 32. The third channel 25 is therefore sealed off at the lower end of the pipe 29 from the outside of the pipe 28. However, the upper end of the pipe 29 is open to the ambient atmosphere at an encircling, annular opening 31. As can be seen, the pipe 29 has a collar-shaped region 47 which expands upwards in the shape of a funnel and into which the lower end of the nozzle 17 projects. The opening 26 of the pipe 28 is likewise situated in this region. A connector 33 which protrudes approximately at right angles and is to be connected to the flushing channel 11 is arranged in the lower region of the pipe 28.
The flushing flow distributor 2 shown in
The toilet system 44 shown in
The manner of operation of the flushing flow distributors 1, 2, 3, 52, 53 is explained in greater detail below.
Flushing is triggered in the usual manner by an actuating device (not shown here). In the process, a discharge valve (not shown here) arranged in the pressurized flushing cistern 4 is opened. As a result, water under pressure flows through the discharge 45 into the flushing flow distributor 1, 2 or 3. According to
The nozzle 19 can be adjusted vertically preferably in the directions of the double arrow 51. As a result, the division of the two water flows 41 and 42 can be set precisely. If the nozzle 19 is moved downwards, then the third water flow 42 is reduced and the velocity of the second water flow 41 is increased. The outlet of water at the nozzle 46 can therefore be optimally set. The flushing of the toilet bowl 10 with the third water flow 42 can likewise be optimized and matched to the toilet bowl 10. Optimum cleaning of the toilet bowl 10 can therefore be achieved with minimal water consumption.
The first water flow 40 is divided as explained above into the two water flows 41 and 42. However, an embodiment is also conceivable, in which the water flow 40 is divided into more than two water flows. For example, a nozzle (not shown here) for cleaning the toilet bowl 10 could be supplied with a further water flow.
If a negative pressure arises in the pressurized flushing cistern 4 or in the supply conduit 6 due to a disturbance, then, for example in the case of the flushing flow distributor 3 according to
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