EP1630306B1 - Flushing device having a full or partial flushing capability - Google Patents
Flushing device having a full or partial flushing capability Download PDFInfo
- Publication number
- EP1630306B1 EP1630306B1 EP05076938A EP05076938A EP1630306B1 EP 1630306 B1 EP1630306 B1 EP 1630306B1 EP 05076938 A EP05076938 A EP 05076938A EP 05076938 A EP05076938 A EP 05076938A EP 1630306 B1 EP1630306 B1 EP 1630306B1
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- EP
- European Patent Office
- Prior art keywords
- valve
- weighting
- flushing
- tube
- flushing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 64
- 230000036961 partial effect Effects 0.000 title description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
- E03D1/02—High-level flushing systems
- E03D1/14—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves
- E03D1/142—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves in cisterns with flushing valves
Definitions
- the invention relates to a device for flushing a water closet, comprising a valve for closing an outflow opening of a cistern of the water closet, at least one float connected to the valve, means to be selectively connected to the valve for weighting thereof, said weighting means comprising at least one weighting body and means for operating the valve, said operating means being adapted to optionally lift only the valve or the valve in combination with the weighting means and comprising a first part acting directly on the valve and a second part acting on the weighting means, wherein the at least one weighting body is movable under the influence of the second part of the operating means between a rest position leaving the valve clear and a weighting position in which it loads the valve and wherein the at least one weighting body takes the form of a vessel open at the top.
- a flushing device is known, for instance from EP 0 722 020 , which discloses the features of the preamble of claim 1.
- a first method is the flush interruption.
- the flushing device is herein provided with a control which acts in two directions. When operated in a first direction a flushing is started by lifting a valve from a seat on an outflow opening in the bottom of the cistern. Operation in a second, opposite direction results in the valve being urged back onto its seat and the outflow opening being closed, so that the flushing is ended before the cistern is entirely emptied.
- This manner of limiting the quantity of water per flush has the drawback that an extra operation is required of the user.
- Another method which is preferred at the moment, consists of the user being offered the choice between two predetermined flushes, a full and a partial flush.
- Use is made here of a flushing device with dual control, wherein a part of the control is responsible for starting a full flushing and the other part for starting the partial flushing.
- the outflow valve which is lifted from its seat at the beginning of the flush, drops back of itself onto its seat.
- the difference between the flushes is determined by the difference in the time which elapses before the valve begins to drop back. This difference in the moment of dropping back is in turn caused by a variable buoyancy of the valve in the water of the cistern.
- the valve is urged back to the seat in accelerated manner by loading it with an extra weight.
- a flushing device of this type is described in the above stated document EP 0 722 020 .
- the flushing device is provided with a weighting member in the form of a vessel which is open at the top and which is arranged slidably around a tube carrying the valve.
- a lever or switch On the underside of the weighting member is mounted a lever or switch which has a widened foot. This foot protrudes into an opening in the upper side of a housing which encloses the tube and supports the weighting member in the rest position.
- the weighting member is lifted by means of a pull rod, wherein this latter comes into engagement with an edge of the tube, which is co-displaced upward.
- This known flushing device has the drawback that it has a relatively large number of components, some of which are moreover quite small.
- the assembly of the flushing device hereby requires a large number of operations to be carried out accurately.
- there is the risk that the operation of the relatively small lever will be adversely affected during the lifespan of the flushing device by the growth of organisms present in the water, whereby malfunction can occur.
- a similar flushing device is disclosed in EP 1 245 744 .
- a weighting tube is arranged around the flushing tube.
- this weighting tube can be connected to the flushing tube by means of a rocking body that is hinged to a support carried by the weighting tube.
- This reducing member has a float on one end and a hook on the opposite end. The hook engages a seat on the weighting tube to connect the weighting tube to the flushing tube and thereby accelerate closure of the valve.
- a flushing device with full and partial flushing is further known from EP 0 448 092 , wherein the valve is loaded in its rest position by a weighting member which is suspended therefrom by means of hooking arms.
- the valve is loaded in its rest position by a weighting member which is suspended therefrom by means of hooking arms.
- the weighting member is suspended therefrom by means of hooking arms.
- This flushing device also has the drawback of having a relatively large number of small components. These components are here moreover often situated at the boundary surface of water and air, whereby, in addition to growth developing, limescale can also affect operation.
- the invention has for its object to provide a flushing device of the above described type which has a simpler construction, is more robust and thus more reliable than the known devices. According to the invention this is achieved in such a flushing device in that the at least one weighting body is pivotable about a shaft situated at a distance from its centre of gravity.
- the weighting body By giving the weighting body itself a movable form and connecting it directly or indirectly to the valve, the weighting body itself in fact functions as coupling or lever, and all manner of vulnerable and structurally complicated moving transmissions can be omitted.
- a pivoting movement is easy to realize, while the open top vessel is easily operated by the displacement through the water in the cistern.
- the first operating part preferably comprises a tube which carries the valve and is movable along the weighting means, and the at least one weighting body has at least one element engaging on the tube in the weighting position.
- the pivot shaft is situated on one side of the tube and the at least one weighting body at least partially encloses the tube.
- the pivot shaft can be formed close to the top side of the at least one weighting body and the at least one engaging element can be formed close to the underside thereof.
- the flushing device is preferably provided with means for supporting the at least one weighting body in its rest position.
- the support means herein comprise a cylindrical housing enclosing the tube and the at least one weighting body, a rotation symmetrical and therefore easily installed mechanism is once again obtained.
- the invention further relates to a water closet with a cistern in which the flushing device as described above is applied.
- a device 1 for flushing a water closet comprises a valve 2 for closing an outflow opening 3 in the bottom 4 of a cistern ( fig. 2 ).
- This valve 2 here takes the form of an annular element of rubber or an elastomer, which rests in the closing position on a valve seat 5 around outflow opening 3.
- the annular valve element 2 is clamped between two flanges 6 on the underside of an overflow tube 7.
- Overflow tube 7 forms a first part, acting directly on valve 2, of means 8 for operating the valve 2.
- these operating means 8 can further comprise a linkage or lever mechanism (not shown here) engaging on the top side of overflow tube 7, whereby a movement of a pushing or pulling element to be operated by a user is converted into an upward directed movement of overflow tube 7 and the valve 2 fixed thereon.
- a float 9 is further connected to valve 2.
- the float 9 is a ring of a light material, for instance a closed-cell foam, which is clamped around overflow tube 7 by means of protrusions 10. This float 9 ensures that overflow tube 7 and valve 2 remain floating on or suspended in the water in the cistern once they have been moved upward. Valve 2 thus drops back onto seat 5 only gradually with emptying of the cistern, thereby achieving that sufficient water can indeed flow out of the cistern to ensure a proper flushing.
- means 11 can be connected to valve 2 which weight the valve 2 and thus ensure that it drops back onto seat 5 in accelerated manner.
- valve 2 By connecting these weighting means 11 to valve 2, the time for which outflow opening 3 remains opened after valve 2 is lifted is thus shortened, and the quantity of water flowing out of the cistern is thereby reduced. A partial flushing is thus achieved.
- Operating means 8 are herein adapted to lift valve 2 only or valve 2 in combination with weighting means 11 subject to the choice of the user.
- operating means 8 comprise for this purpose a second operating part 12 which acts on weighting means 11.
- Weighting means 11 are hereby displaceable between a rest position, in which they leave valve 2 free during flushing ( fig. 3 ), and a weighting position in which during flushing ( fig. 4 ) they load valve 2 and thus urge it back to its seat 5 in accelerated manner.
- the weighting means 11 comprise a weighting body 13, here in the form of a partly annular vessel which is open at the top.
- This weighting body 13 is pivotable about a shaft 14, which is situated at a distance from its centre of gravity.
- This pivot shaft 14 is here mounted in an open ring 15 which partly encloses a narrowed part of overflow tube 7 bound by edges 16, 17.
- a pull rod 19 which is connected at the top to the linkage or lever mechanism (not shown here) of operating means 8. Ring 15 and pull rod 19 thus together form the second operating part 12.
- the first operating part, in the form of overflow tube 7, and second operating part 12, in the form of ring 15 and pull rod 19, are thus slidable relative to each other over the length of the narrowed tube part 18.
- valve 2 is loaded in the weighting position by weighting means 11.
- the vessel 13 is provided close to its underside with two engaging elements 20, here in the form of protrusions projecting obliquely downward from the edge between its base 21 and its partly annular inner wall 22.
- these engaging elements 20 come to rest on either side of overflow tube 7 on the lower edge 17 of the narrowed part 18 thereof.
- This edge 17 can also take an oblique form so that engaging elements 20 can be held in reliable manner between edge 17 and the periphery of overflow tube 7.
- a cylindrical housing 23 is arranged around the assembly of overflow tube 7, valve 2, float 9 and weighting means 11, which housing is accommodated in fixed position in the cistern in that it rests with two legs 32 on bottom part 4.
- This housing 23 has a bottom part 24 with an opening 25 therein, through which protrudes the overflow tube 7.
- This bottom part 24 functions as a stop bounding the upward movement of valve 2.
- Housing 23 further serves to support the weighting means 11 in the rest position.
- the cylinder wall 26 of housing 23 is provided with a bent upper edge 27 on which engages a protruding part 28 of vessel 13.
- Protrusion 28 here forms an integral part of outer wall 29 of vessel 13.
- flushing device 1 The operation of flushing device 1 is now as follows. When a user wishes to flush the water closet, he opts for a full or a partial flushing by operating an associated knob or handle.
- the first operating part including overflow tube 7, is activated.
- Tube 7 is moved upward (arrow F) from the rest position drawn in fig. 1 and 2 , whereby valve 2 is lifted from seat 5 and outflow opening 3 is left clear.
- the narrowed part 18 slides through ring 15 ( fig. 3 ).
- This ring 15 forms part of the second operating part 12, which is not active during a full flushing and thus remains in place.
- Weighting body 13 herein also remains resting with its protrusion 28 on upper edge 27 of housing 23, so that inner wall 22 and engaging elements 20 remain clear of lower edge 17 of the narrowed tube part 18.
- Valve 2 is thus not loaded by weighting body 13 and, due to the buoyancy of float 9, will only drop back slowly onto valve seat 5. This dropping-back is slowed still further because the water level in housing 23 drops more slowly than in the surrounding cistern. The water can after all only flow out of housing 23 through the narrow gap between opening 25 and overflow tube 7. Outflow opening 3 thus remains open long enough to allow the greater part of the contents of the cistern to flow away, so that a full flushing is achieved.
- the second operating part 12 formed, among other parts, by pull rod 19 and ring 15 is activated.
- Pull rod 19 and ring 15 are moved upward (arrow P), wherein overflow tube 7 is co-displaced on the upper edge 16 of its narrowed part 18, so that valve 2 is also lifted from seat 5 again and outflow opening 3 is left clear.
- Weighting body 13 is also moved upward by the movement of ring 15 and the pivot shaft 14 mounted therein.
- Protrusion 28 herein detaches from upper edge 27 of housing 23.
- weighting body 13 takes the form of an open vessel, it will as it were “scoop” water out of the cistern during the upward movement, whereby a resistant force is exerted on vessel 13. Because vessel 13 extends only partially around overflow tube 7, the imaginary point of engagement of this resistant force, in fact the centre of gravity of weighting body 13, lies outside this tube 7, while pivot shaft 14 is mounted on the opposite side of tube 7. The resistant force on vessel 13 hereby results in a moment round pivot shaft 14 which urges the base 21 of vessel 13 and the engaging elements 20 connected hereto in the direction of overflow tube 7 (arrow R).
- Engaging elements 20 herein come to rest on the lower edge 17 of narrowed tube part 18, so that overflow tube 7, and therefore also valve 2, are loaded by the weight of weighting body 13 once the water level in the cistern has dropped below weighting body 13.
- the relatively great distance between pivot shaft 14 and engaging elements 20 ensures that these elements are pressed firmly onto lower edge 17.
- the extra weight on overflow tube 7 results in valve 2 dropping back onto seat 5 in accelerated manner, and only part of the water in the cistern is thus delivered, so that only a partial flushing is carried out.
- weighting body 13 can be manufactured from a plastic having practically the same density as water, there is a risk that it will continue to swing upward at the end of an abrupt pulling movement. Weighting body 13 could also be pivoted upward by a swirling flow in the cistern, so that the engagement on overflow tube 7 does not come about. In order to prevent all this, provisions (not shown here) can be present for preventing such an upward pivoting movement of weighting body 13. These provisions can consist of a stop, for instance mounted on housing 23, which comes into engagement with the upper edge of weighting body 13, thus preventing the upward pivoting movement. It is however also possible to make the open vessel clearly heavier than the surrounding water, for instance by adding a ballast weight.
- engaging elements 20 on the underside of vessel 13 it is of course also possible to form an engaging element 120 on the top side of vessel 113 ( fig. 5 ).
- This engaging element 120 must here then be placed on the same side of overflow tube 107 as pivot shaft 114 in order to come into engagement with tube 107 during rotation of vessel 113.
- the engaging element 120 is otherwise arranged on an arm 130 in order to create a considerable distance from pivot shaft 114.
- Engaging element 120 is herein embodied as a hook which can grip round a protrusion 131 on overflow tube 107.
- this pivot shaft 214 is placed close to the bottom 221 of vessel 213 in order to maximize the distance from engaging element 220.
- the engaging element 220 takes the form of a single, central hook which engages on a peripheral rib 231 on overflow tube 207.
- This variant like that of fig. 1 to 4 , is hereby substantially rotation-symmetrical, from which ensues that the different components can be mounted in a random position. The installation of the flushing device is thus simplified considerably.
- the invention thus makes it possible to form a reliably operating flushing device using simple means and a minimum of components, the device offering the choice between a full and a partial flushing.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
- The invention relates to a device for flushing a water closet, comprising a valve for closing an outflow opening of a cistern of the water closet, at least one float connected to the valve, means to be selectively connected to the valve for weighting thereof, said weighting means comprising at least one weighting body and means for operating the valve, said operating means being adapted to optionally lift only the valve or the valve in combination with the weighting means and comprising a first part acting directly on the valve and a second part acting on the weighting means, wherein the at least one weighting body is movable under the influence of the second part of the operating means between a rest position leaving the valve clear and a weighting position in which it loads the valve and wherein the at least one weighting body takes the form of a vessel open at the top. Such a flushing device is known, for instance from
EP 0 722 020 , which discloses the features of the preamble ofclaim 1. - There is a growing realization worldwide that clean water is becoming scarce. It is therefore being used in more conscious manner in recent years, and waste is being reduced as much as possible in many fields. A significant part of domestic water use is the result of flushing water closets. Possibilities for limiting the quantity of water per flush are therefore being sought. Two methods have herein come into use.
- A first method is the flush interruption. The flushing device is herein provided with a control which acts in two directions. When operated in a first direction a flushing is started by lifting a valve from a seat on an outflow opening in the bottom of the cistern. Operation in a second, opposite direction results in the valve being urged back onto its seat and the outflow opening being closed, so that the flushing is ended before the cistern is entirely emptied. This manner of limiting the quantity of water per flush has the drawback that an extra operation is required of the user. There is furthermore the risk here of the flushing being interrupted prematurely and insufficient water being delivered to flush the toilet bowl clean and discharge the contents hereof through the sewage system.
- Another method, which is preferred at the moment, consists of the user being offered the choice between two predetermined flushes, a full and a partial flush. Use is made here of a flushing device with dual control, wherein a part of the control is responsible for starting a full flushing and the other part for starting the partial flushing. For both flushes it is the case that they are ended when the outflow valve, which is lifted from its seat at the beginning of the flush, drops back of itself onto its seat. The difference between the flushes is determined by the difference in the time which elapses before the valve begins to drop back. This difference in the moment of dropping back is in turn caused by a variable buoyancy of the valve in the water of the cistern. In the case of a partial flushing the valve is urged back to the seat in accelerated manner by loading it with an extra weight.
- A flushing device of this type is described in the above stated document
EP 0 722 020 . The flushing device is provided with a weighting member in the form of a vessel which is open at the top and which is arranged slidably around a tube carrying the valve. On the underside of the weighting member is mounted a lever or switch which has a widened foot. This foot protrudes into an opening in the upper side of a housing which encloses the tube and supports the weighting member in the rest position. In order to carry out a partial flush the weighting member is lifted by means of a pull rod, wherein this latter comes into engagement with an edge of the tube, which is co-displaced upward. During this movement the lever is pulled up through the opening in the housing, wherein an edge of the opening engages on the widened foot, and thus forces the lever toward the tube. In this position the foot of the lever comes to rest on an edge of the tube when the weighting member drops back down again after releasing the pull rod. The tube and thereby the valve are thus loaded by the weight of the weighting member, and will drop back in accelerated manner to the position in which the valve closes the outflow opening. - This known flushing device has the drawback that it has a relatively large number of components, some of which are moreover quite small. The assembly of the flushing device hereby requires a large number of operations to be carried out accurately. In addition, there is the risk that the operation of the relatively small lever will be adversely affected during the lifespan of the flushing device by the growth of organisms present in the water, whereby malfunction can occur.
- A similar flushing device is disclosed in
EP 1 245 744 - A flushing device with full and partial flushing is further known from
EP 0 448 092 , wherein the valve is loaded in its rest position by a weighting member which is suspended therefrom by means of hooking arms. In the case of a partial flushing the valve is pulled up together with the weighting member, while for a full flushing the hooking arms are operated and the weighting member is uncoupled from the valve. This flushing device also has the drawback of having a relatively large number of small components. These components are here moreover often situated at the boundary surface of water and air, whereby, in addition to growth developing, limescale can also affect operation. - The invention has for its object to provide a flushing device of the above described type which has a simpler construction, is more robust and thus more reliable than the known devices. According to the invention this is achieved in such a flushing device in that the at least one weighting body is pivotable about a shaft situated at a distance from its centre of gravity. By giving the weighting body itself a movable form and connecting it directly or indirectly to the valve, the weighting body itself in fact functions as coupling or lever, and all manner of vulnerable and structurally complicated moving transmissions can be omitted. Moreover, a pivoting movement is easy to realize, while the open top vessel is easily operated by the displacement through the water in the cistern.
- The first operating part preferably comprises a tube which carries the valve and is movable along the weighting means, and the at least one weighting body has at least one element engaging on the tube in the weighting position. By making use of the overflow tube present in many flushing devices a simple and robust connection is achieved between the weighting body and the valve. In addition, this construction is rotation symmetrical, whereby the installation and assembly thereof are simplified. The second part of the operating means can herein advantageously comprise a ring slidably receiving the tube and bearing the pivot shaft of the at least one weighting body.
- So as to create a considerable distance between the centre of gravity of the weighting body and the point of rotation thereof, and thus a rapid movement of the weighting body, it is recommended that the pivot shaft is situated on one side of the tube and the at least one weighting body at least partially encloses the tube. For the same reason the pivot shaft can be formed close to the top side of the at least one weighting body and the at least one engaging element can be formed close to the underside thereof.
- In order to bring about a precisely determined rest position and a readily reproducible operation, the flushing device is preferably provided with means for supporting the at least one weighting body in its rest position.
- When the support means herein comprise a cylindrical housing enclosing the tube and the at least one weighting body, a rotation symmetrical and therefore easily installed mechanism is once again obtained.
- The invention further relates to a water closet with a cistern in which the flushing device as described above is applied.
- The invention is now elucidated on the basis of a number of examples, wherein reference is made to the accompanying drawing, in which:
-
Fig. 1 is a schematic perspective view of a flushing device according to a first embodiment of the invention in the rest position, -
Fig. 2 is a view corresponding withfig. 1 , but cross-sectional, in which a part of a cistern is also shown, -
Fig. 3 is a view corresponding withfig. 2 , but without cistern, of the flushing device when performing a full flushing, -
Fig. 4 is a cross-sectional perspective view from a different angle, which shows the flushing device during a partial flushing, and -
Fig. 5 and 6 are schematic side views of alternative embodiments of the flushing device. - A
device 1 for flushing a water closet comprises avalve 2 for closing an outflow opening 3 in thebottom 4 of a cistern (fig. 2 ). Thisvalve 2 here takes the form of an annular element of rubber or an elastomer, which rests in the closing position on avalve seat 5 aroundoutflow opening 3. Theannular valve element 2 is clamped between twoflanges 6 on the underside of anoverflow tube 7. -
Overflow tube 7 forms a first part, acting directly onvalve 2, ofmeans 8 for operating thevalve 2. In conventional manner these operating means 8 can further comprise a linkage or lever mechanism (not shown here) engaging on the top side ofoverflow tube 7, whereby a movement of a pushing or pulling element to be operated by a user is converted into an upward directed movement ofoverflow tube 7 and thevalve 2 fixed thereon. - A
float 9 is further connected tovalve 2. In the shown embodiment thefloat 9 is a ring of a light material, for instance a closed-cell foam, which is clamped aroundoverflow tube 7 by means ofprotrusions 10. Thisfloat 9 ensures thatoverflow tube 7 andvalve 2 remain floating on or suspended in the water in the cistern once they have been moved upward.Valve 2 thus drops back ontoseat 5 only gradually with emptying of the cistern, thereby achieving that sufficient water can indeed flow out of the cistern to ensure a proper flushing. - In addition, means 11 can be connected to
valve 2 which weight thevalve 2 and thus ensure that it drops back ontoseat 5 in accelerated manner. By connecting these weighting means 11 tovalve 2, the time for whichoutflow opening 3 remains opened aftervalve 2 is lifted is thus shortened, and the quantity of water flowing out of the cistern is thereby reduced. A partial flushing is thus achieved. - The choice between a partial and a full flushing is made by the user. Operating means 8 are herein adapted to lift
valve 2 only orvalve 2 in combination with weighting means 11 subject to the choice of the user. In addition to the first operating part, here in the form ofoverflow tube 7, which engages directly onvalve 2, operating means 8 comprise for this purpose asecond operating part 12 which acts on weighting means 11. Weighting means 11 are hereby displaceable between a rest position, in which they leavevalve 2 free during flushing (fig. 3 ), and a weighting position in which during flushing (fig. 4 ) they loadvalve 2 and thus urge it back to itsseat 5 in accelerated manner. - In the shown embodiment the weighting means 11 comprise a
weighting body 13, here in the form of a partly annular vessel which is open at the top. Thisweighting body 13 is pivotable about ashaft 14, which is situated at a distance from its centre of gravity. Thispivot shaft 14 is here mounted in anopen ring 15 which partly encloses a narrowed part ofoverflow tube 7 bound byedges ring 15 is apull rod 19 which is connected at the top to the linkage or lever mechanism (not shown here) of operating means 8.Ring 15 and pullrod 19 thus together form thesecond operating part 12. The first operating part, in the form ofoverflow tube 7, andsecond operating part 12, in the form ofring 15 and pullrod 19, are thus slidable relative to each other over the length of the narrowedtube part 18. - As stated,
valve 2 is loaded in the weighting position by weighting means 11. For this purpose thevessel 13 is provided close to its underside with twoengaging elements 20, here in the form of protrusions projecting obliquely downward from the edge between itsbase 21 and its partly annularinner wall 22. In the weighting position (fig. 4 ) theseengaging elements 20 come to rest on either side ofoverflow tube 7 on thelower edge 17 of the narrowedpart 18 thereof. Thisedge 17 can also take an oblique form so thatengaging elements 20 can be held in reliable manner betweenedge 17 and the periphery ofoverflow tube 7. - In the shown embodiment a
cylindrical housing 23 is arranged around the assembly ofoverflow tube 7,valve 2,float 9 and weighting means 11, which housing is accommodated in fixed position in the cistern in that it rests with twolegs 32 onbottom part 4. Thishousing 23 has abottom part 24 with an opening 25 therein, through which protrudes theoverflow tube 7. Thisbottom part 24 functions as a stop bounding the upward movement ofvalve 2. -
Housing 23 further serves to support the weighting means 11 in the rest position. For this purpose thecylinder wall 26 ofhousing 23 is provided with a bentupper edge 27 on which engages a protrudingpart 28 ofvessel 13.Protrusion 28 here forms an integral part ofouter wall 29 ofvessel 13. - The operation of flushing
device 1 is now as follows. When a user wishes to flush the water closet, he opts for a full or a partial flushing by operating an associated knob or handle. - When the user selects a full flushing, the first operating part, including
overflow tube 7, is activated.Tube 7 is moved upward (arrow F) from the rest position drawn infig. 1 and2 , wherebyvalve 2 is lifted fromseat 5 andoutflow opening 3 is left clear. During this movement ofoverflow tube 7 the narrowedpart 18 slides through ring 15 (fig. 3 ). Thisring 15 forms part of thesecond operating part 12, which is not active during a full flushing and thus remains in place.Weighting body 13 herein also remains resting with itsprotrusion 28 onupper edge 27 ofhousing 23, so thatinner wall 22 andengaging elements 20 remain clear oflower edge 17 of the narrowedtube part 18.Valve 2 is thus not loaded byweighting body 13 and, due to the buoyancy offloat 9, will only drop back slowly ontovalve seat 5. This dropping-back is slowed still further because the water level inhousing 23 drops more slowly than in the surrounding cistern. The water can after all only flow out ofhousing 23 through the narrow gap between opening 25 andoverflow tube 7.Outflow opening 3 thus remains open long enough to allow the greater part of the contents of the cistern to flow away, so that a full flushing is achieved. - When on the other hand the user opts for a partial flushing, the
second operating part 12 formed, among other parts, bypull rod 19 andring 15 is activated. Pullrod 19 andring 15 are moved upward (arrow P), whereinoverflow tube 7 is co-displaced on theupper edge 16 of its narrowedpart 18, so thatvalve 2 is also lifted fromseat 5 again andoutflow opening 3 is left clear.Weighting body 13 is also moved upward by the movement ofring 15 and thepivot shaft 14 mounted therein.Protrusion 28 herein detaches fromupper edge 27 ofhousing 23. - Because
weighting body 13 takes the form of an open vessel, it will as it were "scoop" water out of the cistern during the upward movement, whereby a resistant force is exerted onvessel 13. Becausevessel 13 extends only partially aroundoverflow tube 7, the imaginary point of engagement of this resistant force, in fact the centre of gravity ofweighting body 13, lies outside thistube 7, whilepivot shaft 14 is mounted on the opposite side oftube 7. The resistant force onvessel 13 hereby results in a momentround pivot shaft 14 which urges thebase 21 ofvessel 13 and theengaging elements 20 connected hereto in the direction of overflow tube 7 (arrow R).Engaging elements 20 herein come to rest on thelower edge 17 of narrowedtube part 18, so thatoverflow tube 7, and therefore alsovalve 2, are loaded by the weight ofweighting body 13 once the water level in the cistern has dropped belowweighting body 13. The relatively great distance betweenpivot shaft 14 andengaging elements 20 ensures that these elements are pressed firmly ontolower edge 17. The extra weight onoverflow tube 7 results invalve 2 dropping back ontoseat 5 in accelerated manner, and only part of the water in the cistern is thus delivered, so that only a partial flushing is carried out. - Because
weighting body 13 can be manufactured from a plastic having practically the same density as water, there is a risk that it will continue to swing upward at the end of an abrupt pulling movement.Weighting body 13 could also be pivoted upward by a swirling flow in the cistern, so that the engagement onoverflow tube 7 does not come about. In order to prevent all this, provisions (not shown here) can be present for preventing such an upward pivoting movement ofweighting body 13. These provisions can consist of a stop, for instance mounted onhousing 23, which comes into engagement with the upper edge ofweighting body 13, thus preventing the upward pivoting movement. It is however also possible to make the open vessel clearly heavier than the surrounding water, for instance by adding a ballast weight. - Instead of engaging
elements 20 on the underside ofvessel 13 it is of course also possible to form anengaging element 120 on the top side of vessel 113 (fig. 5 ). Thisengaging element 120 must here then be placed on the same side ofoverflow tube 107 aspivot shaft 114 in order to come into engagement withtube 107 during rotation ofvessel 113. In this embodiment theengaging element 120 is otherwise arranged on anarm 130 in order to create a considerable distance frompivot shaft 114.Engaging element 120 is herein embodied as a hook which can grip round aprotrusion 131 onoverflow tube 107. - In yet another embodiment, wherein engaging
element 220 lies on the same side ofoverflow tube 207 as pivot shaft 214 (fig. 6 ), thispivot shaft 214 is placed close to the bottom 221 ofvessel 213 in order to maximize the distance from engagingelement 220. In this embodiment theengaging element 220 takes the form of a single, central hook which engages on aperipheral rib 231 onoverflow tube 207. This variant, like that offig. 1 to 4 , is hereby substantially rotation-symmetrical, from which ensues that the different components can be mounted in a random position. The installation of the flushing device is thus simplified considerably. - The invention thus makes it possible to form a reliably operating flushing device using simple means and a minimum of components, the device offering the choice between a full and a partial flushing.
- Although the invention is elucidated above with reference to a number of embodiments, it will be apparent that it is not limited thereto. The scope of the invention is defined solely by the following claims.
Claims (8)
- Device (1; 101; 201) for flushing a water closet, comprising:- a valve (2) for closing an outflow opening (3) of a cistern of the water closet,- at least one float (9) connected to the valve (2),- means (11; 111; 211) to be selectively connected to the valve (2) for weighting thereof, said weighting means (11; 111; 211) comprising at least one weighting body (13; 113; 213), and- means (8) for operating the valve (2), said operating means (8) being adapted to optionally lift only the valve (2) or the valve (2) in combination with the weighting means (11; 111; 211) and comprising a first part acting directly on the valve (2) and a second part (12) acting on the weighting means (11; 111; 211),wherein the at least one weighting body (13; 113; 213) is movable under the influence of the second part (12) of the operating means between a rest position leaving the valve (2) clear and a weighting position in which it loads the valve (2), and wherein the at least one weighting body (13; 113; 213) takes the form of a vessel open at the top,
characterized in that the at least one weighting body (13; 113; 213) is pivotable about a shaft (14; 114; 214) situated at a distance from its centre of gravity. - Flushing device (1; 101; 201) as claimed in claim 1, characterized in that the first part of the operating means comprises a tube (7; 107; 207) which carries the valve (2) and is movable along the at least one weighting body (13; 113; 213), and the at least one weighting body (13; 113; 213) has at least one element (20; 120; 220) engaging on the tube (7; 107; 207) in the weighting position.
- Flushing device (1; 101; 201) as claimed in claim 2, characterized in that the second part (12) of the operating means comprises a ring (15; 115; 215) slidably receiving the tube (7; 107; 207) and bearing the pivot shaft (14; 114; 214) of the at least one weighting body (13; 113; 213).
- Flushing device (1; 101; 201) as claimed in claim 3, characterized in that the pivot shaft (14; 114; 214) is situated on one side of the tube (7; 107; 207) and the at least one weighting body (13; 113; 213) at least partially encloses the tube (7; 107; 207).
- Flushing device (1) as claimed in claim 4, characterized in that the pivot shaft (14) is formed close to the top side of the at least one weighting body (13) and the at least one engaging element (20) is formed close to the underside thereof.
- Flushing device (1) as claimed in any of the foregoing claims, characterized by means for supporting the at least one weighting body (13) in its rest position.
- Flushing device (1) as claimed in any of the claims 3-5 and 6, characterized in that the support means comprise a cylindrical housing (23) enclosing the tube (7) and the at least one weighting body (13).
- Water closet, comprising a bowl and a cistern connected thereto via a flush pipe, and incorporating a flushing device (1; 101; 201) as claimed in any of the foregoing claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1026899A NL1026899C2 (en) | 2004-08-23 | 2004-08-23 | Rinsing device with possibility of full or partial rinsing. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1630306A1 EP1630306A1 (en) | 2006-03-01 |
EP1630306B1 true EP1630306B1 (en) | 2010-07-07 |
Family
ID=34974249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05076938A Active EP1630306B1 (en) | 2004-08-23 | 2005-08-23 | Flushing device having a full or partial flushing capability |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1630306B1 (en) |
AT (1) | ATE473328T1 (en) |
DE (1) | DE602005022146D1 (en) |
ES (1) | ES2344458T3 (en) |
NL (1) | NL1026899C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001718B4 (en) * | 2006-11-03 | 2022-09-08 | Tece Gmbh | Drain valve with adjustable full flush volume |
ITUB20154096A1 (en) * | 2015-10-02 | 2017-04-02 | Oliveira & Irmao Sa | DISCHARGE DEVICE FOR A RINSE CASSETTE |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU559249B2 (en) * | 1983-09-06 | 1987-03-05 | Caroma Industries Limited | Uniset dual flush |
AU580783B2 (en) * | 1984-06-13 | 1989-02-02 | Nigel James Croser | Improvements in two-stage cistern flush systems |
IT1239412B (en) | 1990-03-22 | 1993-10-20 | Dorino Marabese | CASSETTE STRUCTURE PARTICULARLY FOR THE CONTROLLED AND DIFFERENTIATED WASHING OF TOILET POTS IN SANITARY AND SIMILAR PLANTS |
DE29517363U1 (en) * | 1995-01-16 | 1995-12-21 | Geberit Technik AG, Jona, St.Gallen | Flushing device in a toilet cistern |
IT1305111B1 (en) * | 1998-12-30 | 2001-04-10 | Oliveira & Irmao Sa | DISCHARGE DEVICE FOR A RINSE BOX. |
IT1314137B1 (en) * | 1999-12-20 | 2002-12-04 | Kariba Spa | ADJUSTABLE DISCHARGE VALVE FOR HYDRO-SANITARY WC CONTAINERS |
ITMI20010661A1 (en) * | 2001-03-29 | 2002-09-30 | Valsir Spa | DISCHARGE DEVICE FOR A SANITARY EQUIPMENT HUNTING BOX |
-
2004
- 2004-08-23 NL NL1026899A patent/NL1026899C2/en not_active IP Right Cessation
-
2005
- 2005-08-23 DE DE602005022146T patent/DE602005022146D1/en active Active
- 2005-08-23 ES ES05076938T patent/ES2344458T3/en active Active
- 2005-08-23 EP EP05076938A patent/EP1630306B1/en active Active
- 2005-08-23 AT AT05076938T patent/ATE473328T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL1026899C2 (en) | 2006-02-24 |
ES2344458T3 (en) | 2010-08-27 |
EP1630306A1 (en) | 2006-03-01 |
DE602005022146D1 (en) | 2010-08-19 |
ATE473328T1 (en) | 2010-07-15 |
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