Claims
- 1. A lavatory flushing device comprising in combination
- a lavatory basin provided with a flushing box having a filling valve and a discharge valve,
- a separating wall separating said flushing box into a flushing chamber containing said discharge valve, and a further chamber containing said fillinn valve,
- a stream channel free of any valve means leading from said further chamber to said lavatory basin,
- overflow means leading from an upper region of said flushing box into said further chamber, and
- at least one water conduit leading from said filling valve into said flushing chamber.
- 2. The lavatory flushing device according to claim 1, further comprising a rim flushing channel, and a further conduit leading to said rim flushing channel through a branch, said branch communicating with said water conduit.
- 3. The lavatory flushing device according to claim 1, wherein said overflow means is associated with said separating wall, and further including rerouting means disposed in said further chamber for closing said filling valve or maintaining it in an open position, said overflow means being directed towards said rerouting means, whereby, upon occurrance of an overflow, water passing from said overflow means to said rerouting means causes said rerouting means to close said filling valve.
- 4. The lavatory flushing device according to claim 3, wherein said further chamber has a floor region, said stream channel leading from the floor region to said lavotory basin.
- 5. The lavatory flushing device according to claim 4, wherein said stream channel has an elongated upright portion, and wherein said further chamber is situated at a level higher than that of said lavatory basin.
- 6. The lavatory flushing device according to claim 4, wherein said stream channel has a cross-sectional area such that in the event said filling valve is defective, a maximally expected through-flow is still reroutable through said stream channel.
- 7. The lavatory flushing device according to claim 6, wherein said further chamber has at least one lateral wall formed with an opening disposed slightly above the level of an upper edge of said lavatory basin, and wherein said maximally expected through-flow is reroutable through said stream channel without having to spill over through said opening in said lateral wall.
- 8. The lavatory flushing device according to claim 3, wherein said rerouting means include a pivotable control lever, a first water-receiving chamber being located at one end of said control lever, a second water-receiving chamber being located at the other end of said control lever, and having a volume exceeding that of said first water-receiving chamber, said second water-receiving chamber being located below said overflow means.
- 9. The lavatory flushing device according to claim 3, wherein a highest possible water level is defined in said flushing box, and wherein said rerouting means is operable upon occurance of said overflow beyond said highest possible water level.
- 10. The lavatory flushing device according to claim 1, further including a main conduit leading to said lavatory basin, and a rim flushing channel, a stream conduit leading from said flushing chamber to said rim flushing channel, said flushing chamber being formed with a floor, said discharge valve being located on said floor and being arranged to initially open only said stream conduit leading to said rim flushing channel, and to only open said main conduit upon said discharge valve being fully opened.
- 11. The lavatory flushing device according to claim 10, further comprising a seating piece of synthetic material associated with said discharge valve, and having in a center region thereof a member leading to said main conduit, a sleeve of said discharge valve being slidably arranged on said member.
- 12. The lavatory flushing device according to claim 10, wherein said rim flushing channel is formed with an inward projection tending to prevent any water back-flow into said stream conduit.
Priority Claims (1)
| Number |
Date |
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Kind |
| 3512305225 |
Apr 1985 |
DEX |
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BACKGROUND OF THE INVENTION
This is a continuation of application Ser. No. 06/847,153, filed 03/31/86.
The present invention relates to a lavatory flushing device including a lavatory basin, and a flushing box with a filling valve and a discharge valve. For reasons of esthetics, particularly in the case of one-piece lavatories, the flushing box behind the lavatory basin and attached thereto is constructed so as to have a low profile and therefore exceeds the upper edge of the basin by only a relatively small amount. Taking into account the required safey distances of the water line to an overflow line, as well as taking into account other safety distances, which are due to the filling valve and its construction, as well as the safety distance to the lower edge of the flushing box, there results in such types of lavatory flushing devices a relatively low water line or level in the filled flushing box, which in turn results in a relatively weak flushing stream; such a weak flushing stream makes it difficult to satisfactorily initiate the required suction process towards the end of the flushing process. Also generation of a satisfactory rim flushing is problematic, as filling of the rim flushing channel directly from the flushing box can only be obtained with difficulty. For this reason in the case of one-piece flushing lavatories an appropriate conduit leading from the discharge valve in the flushing box to the rim flushing channel is usually dispensed with.
Hence the rim flushing channel must be fed by the through-flow of the filling valve. It is for this reason that flushing lavatories of the aforedescribed type require a relatively high minimum flow pressure in the supply conduit, resulting, in turn, in other use limitations.
Even in the case of high flow pressures it is a disadvantage, that the comparatively slow initiation of the suction process brings about a considerable consumption of water. It is also a problem that any sealing imperfections in the discharge valve result in water flow in the basin, as in lavatories of this type the flushing channel normally lies below the water level of the odor closure. As, on the other hand, the water level in the flushing box is always maintained by the filling valve on the water-line level, a high degree of water loss may result.
It is therefore an object of the present invention to devise a lavatory flushing system of the aforedescribed kind, which ensures proper flushing even in the case of relatively low flow pressures prevailing in the supply conduit.
This object is achieved by a separating wall separating the flushing box into a flushing chamber containing the discharge valve, and a further chamber containing the filling valve, and by the provision of at least one water conduit leading from the filling valve into the flushing chamber.
By creating a flushing chamber containing the discharge valve, but which does not contain any filling valve, this flushing chamber can be brought to the highest possible waterline level, as only a safety distance with respect to the upper edge of the flushing box need be taken into account. Consequently a strong flushing stream can be created upon triggering of the flushing process as a result of the high water-line level, inspite of a relatively low-lying flushing box. By advantageously actuating the filling valve simultaneously with the actuation of the discharge valve, in a preferred embodiment, the filling valve can then supplement supply of the rim flushing channel by employing part of the through-flow, while another part of the through-flow serves for the supply of the flushing chamber. Consequently the flushing stream is well supported by the rim flow.
Taking into account the fact that the filling valve is no longer disposed in the water contained in the flushing box and provided for the flushing stream, it is nevertheless advisable to achieve a valve closure control which is as simple as possible. In accordance with an extremely advantageous further embodiment of the invention, overflow means are associated with the separating wall, and rerouting means associated with the filling valve are disposed in the further chamber, and wherein the overflow means are directed towards the rerouting means. Consequently, if the flushing chamber should overflow towards the end of the flushing process over the separating wall due to the continuous supply of water to the flushing chamber through the open flushing valve, the overflowing water resulting therefrom passes to the rerouting means associated with the filling valve, and closes the filling valve.
The discharge valve disposed in a floor region of the flushing chamber has associated therewith a water conduit leading to the lavatory basin, as well as a water conduit leading to the rim flushing channel. In a particularly advantageous embodiment the discharge valve is constructed so that it opens in an initial opening phase thereof only the water conduit leading to the rim flushing channel, but opens in the final opening phase thereof also the conduit leading to the lavatory basin. The flushing stream starting at the commencement of the opening is therefore primarily guided to the the rim flushing channel, from which extremely high requirements are demanded in part as regards the quality of flushing. It is well to recall that in this phase the relatively high water level of the flushing chamber is still available. Only upon a complete opening of the discharge valve does water flow also into the lavatory basin through a conduit communicating therewith, and starts initiation of a whirling action of the water volume present in the basin. In conjunction with the water for the rim flushing channel the required quantity of water is also made available quickly to initiate filling of the suction portion of the odor closure, so as to commence the suction process. Initiation of the suction process is accomplished comparatively quickly, and consequently at a low consumption of water.
It is to be further pointed out that in view of the inventive arrangement any imperfect sealing in the discharge valve is per force noticed, for in such an eventuality the water level in the flushing chamber ebbs, without there occuring any resupply of water through the filling valve. As a result of the water losses flushing worsens progressively, so that such sealing imperfections are per force noticed, and can consequently be remedied.
Further advantages of the invention will in part become obvious from the description of the specific embodiments which follow, and the claims following the description of the specific embodiments.
US Referenced Citations (8)
Foreign Referenced Citations (1)
| Number |
Date |
Country |
| 404844 |
Jan 1934 |
GBX |
Continuations (1)
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Number |
Date |
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| Parent |
847153 |
Mar 1986 |
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Patent Grant
4813085
