WO1999040264A1 - Ensemble citerne pour toilettes a chasse d'eau - Google Patents

Ensemble citerne pour toilettes a chasse d'eau Download PDF

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Publication number
WO1999040264A1
WO1999040264A1 PCT/HU1998/000102 HU9800102W WO9940264A1 WO 1999040264 A1 WO1999040264 A1 WO 1999040264A1 HU 9800102 W HU9800102 W HU 9800102W WO 9940264 A1 WO9940264 A1 WO 9940264A1
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WO
WIPO (PCT)
Prior art keywords
float
inlet valve
cistern
flush
valve
Prior art date
Application number
PCT/HU1998/000102
Other languages
English (en)
Inventor
József Bereznai
Original Assignee
Bereznai Jozsef
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from HU9800249A external-priority patent/HUP9800249A1/hu
Application filed by Bereznai Jozsef filed Critical Bereznai Jozsef
Priority to AU17767/99A priority Critical patent/AU1776799A/en
Priority to HU0100583A priority patent/HU224106B1/hu
Publication of WO1999040264A1 publication Critical patent/WO1999040264A1/fr

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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
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/32—Arrangement of inlet valves
    • 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
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/33—Adaptations or arrangements of floats

Definitions

  • the present invention relates to a cistern assembly for flush toilets comprising, arranged in a flush water cistern, a float controlled inlet valve, a flush valve associated with a flush outlet at the bottom of the cistern, and a flush device for initiating the flush mode of operation of the cistern assembly by opening the flush valve.
  • the cistem assembly further includes at least one float that is connected to a balance lever of the inlet valve.
  • the inlet valve has a pressure chamber and an outlet chamber with a flow passage arranged therebetween.
  • the inlet valve further has a closure member which is located in the pressure chamber and is linearly moveable between two end positions corresponding to a closed and an open state of the inlet valve, respectively.
  • the movement of the closure member in the closing direction of the valve slows down gradually and proportionally with the gradually slowing rate of the rise of the float.
  • the time period needed for filling or re-filling the flush water cistern is extremely long, and the closure member of the valve gradually narrowing the flow passage of the valve over such long periods of time as well as the co- acting valve seat are subject to rapid wear.
  • Such a float prevents the automatic refilling of a cistern from which the water escapes slowly and continuously as a result of a sealing problem. Since, however, a positive mechanical coupling is present between the closure member of the inlet valve and the float gradually rising in the course of filling up, also for the operation of this well known toilet flush assembly applies that the movement of the closure member of the inlet valve - when filling up or in the course of refilling the cistern after discharge - gradually slows down proportionally with the gradually slowing rise of the float, and so the time needed to fill up the cistern is extremely long.
  • An abject of the present invention is to provide a cistern assembly for flush toilets which - especially in the light of the long fill-up time characterising the known assemblies of the kind concerned - enables the refilling of the cistern in a considerably shorter time.
  • a further object of the invention is to provide an improved cistern assembly for flush toilets suitable for performing a spare flush mode of operation.
  • Another object of the present invention is to provide a cistern assembly for flush toilets which, similarly to the approach described in EP 0 704 581 A2, is capable of - 3 -
  • a general object of the invention is to create a quiet operation, long life cistern assembly for flush toilets allowing within wide limits, the possible selection of the dynamic characteristics of the moving parts comprised therein and thus, exhibiting an improved operational reliability.
  • an improved cistern assembly for flush toilets having the features listed further above in the introductory paragraph of the present description, and which is characterised, according to the new and decisive characteristic feature of the invention, by having an inlet valve comprising, between the closure member and the balance lever, a toggle switch mechanism capable of moving the closure member of the inlet valve between its end positions when pre-determined threshold values of the torque exerted by the float on the balance lever are reached at, or exceeded.
  • the inlet valve of the cistern assembly for flush toilets of the invention having a toggle switch mechanism that moves the closure member of the inlet valve between its end positions opens the valve very quickly, practically immediately to its full flow cross section at the time when the water level starts to drop upon opening the flush valve.
  • the inlet valve starts to fill up the cistern with the highest possible rate of flow.
  • the inlet valve is able to supply already during the open position of the flush valve, additional flush water volume to the water quantity stored in the cistern, and for the single discharge of the same volume of flush water it is sufficient to store less water in the cistern than in conventional toilet flush assemblies.
  • the invention renders possible to use much smaller volume cisterns than in the well known designs.
  • the inlet valve remains open for full flow as long as the torque exerted on the balance lever of the inlet valve by the float - which gradually loses its weight by being immersed into water and which also exerts, provided that a convenient design is applied, buoyant force on the balance lever - reaches or its decrease exceeds the threshold rate of the toggle switch mechanism required for swithing the valve back into its closed state. Consequently, contrary to well known toilet flush assemblies, the flow section of the inlet valve is not narrowing during the time when the water level rises, but it practically - 4 -
  • the float comprises at least two space portions of different densities, where one of the space portions is of a density lower than that of the water, while the density of at least another space portion of the float is at least identical with or preferably higher than that of the water, and the space portion of lower density is located in the range above the higher density space portion of the float.
  • the float is coupled with the balance lever of the inlet valve by a linkage suitable for transferring load in both directions.
  • the inlet valves and floats of well known conventional toilet flush assemblies that are in use currently may be replaced, by retaining the cistern and the discharge valve, by a combination of an inlet valve incorporating a toggle switch mechanism and and a float having the features listed further above.
  • the float In the cistern being discharged during flushing, the float will gradually become "left in the dry", and it is no longer subjected to the buoyant force. Following this, the force of gravity, i.e. the weight of the float increases gradually.
  • the inlet valve When the torque exerted by the force of gravity of the float on the balance lever of the inlet valve reaches the pre-determined threshold value necessary for reversing the toggle switch mechanism of the inlet valve, the inlet valve opens to full flow, and a rapid refilling of the cistern commences. In the meantime, the flush valve of the cistern closes, and the water level of the cistern rises rapidly, while the float becomes immersed in water, gradually. At the beginning, in its floating condition the float loses its force of gravity and then the buoyant force starts to act on the float as well.
  • the float or at least one of its space portions is designed so as to form a float of varying weight by being filled up, at least temporarily and at least partially, with water.
  • the float is designed preferably as an at least partially hollow body having an inner space capable of communication with its environment through perforations.
  • the float may also have the shape of an open top vessel featuring a bottom part provided with at least one perforation. Improved reliability of the reversal of the inlet valve into its closed state can be achieved by using in the cistern assembly according to the present invention a - 5 -
  • the closing float is connected to the balance lever of the inlet valve in an adjustable height position relative to the cistern in a way suitable for transmitting forces in both directions, while the opening float may be connected to the same through a preferably flexible link suitable for transferring to the balance lever at least the actual weight load of the opening float.
  • the floats representing separate component parts of the combined float well determined functions can be assigned to.
  • the separate closing float can be freely dimensioned. On the one hand, it ensures through its buoyant force a reliable closing of the inlet valve.
  • the opening float is designed, e.g. as an open top vessel having a bottom part comprising at least one perforation, the opening float having optionally, at least one choking or closure member, especially a closing disc arraged in the vessel.
  • the choking or closure member provides a check valve capable of choking or closing the perforation(s) in the outlet direction of flow from the vessel.
  • the cistern can be refilled as necessary to a state ready for re-flushing, preferably by external actuation of the balance lever of the inlet valve.
  • the non-performance of automatic refilling warns the user or operator that in the system there is probably a sealing defect that should be eliminated.
  • a toggle mechanism that is designed as an energy-storing mechanism which includes at least one pre-tensioned spring member.
  • inlet valves has proved to be of advantage, in which the mechanism arranged between the closure member and the balance lever of the inlet valve is designed as a toggle switch mechanism capable of driving the closure member from its end position corresponding to the closed state of the inlet valve to its other end position corresponding to the open state of the inlet valve by an increased torque only, which increased torque is to be exerted on the balance lever by an external force to be added additionally and temporarily, to the force of gravity of the float.
  • the opening of the valve only occurs upon an "external command", an additional opening force acting on the balance lever of the inlet valve and exerted preferably, simultaneously with the opening actuation of the flush valve.
  • flush device comprises a double-arm lever pivoted in a tillable way around a fixed fulcrum and at least one manual actuator that is assigned to a first arm of the said double-arm lever, while a second other arm of the double-arm lever is connected to the flush valve.
  • the first arm of the double-arm lever has a driving tongue capable of driving the balance lever and thereby the closure member of the inlet valve from its end position corresponding to the closed state of the inlet valve to its other end position corresponding to the open state of the inlet valve.
  • Preferred embodiments of the cistern assembly of the invention capable of performing flushing with different volumes of water, especially a spare flush with a low quantity of water and a normal flush with full water volume, are equipped with a flush device which comprises alternative manual actuators associated with the first arm of the double-arm lever.
  • the manual actuators are acting on the first arm at different distances from the fixed fulcrum by being arranged on opposite ends of a two-arm rocker, whereby upon respective actuations, different extents of lever swivel are performed on the first arm.
  • one of the manual actuators may be designed as a push button of delayed effect which when actuated, abuts on the first arm after a stroke displacement of specified extent only.
  • Improved reliability and lifetime of the cistern assembly according to the invention can be achieved by designing and using embodiments comprising at least one float capable of influencing the dynamic characteristics of the operation of the inlet valve, especially the acceleration and the speed of the closure member during its movement between its respective end positions.
  • Such at least one float may comprise a surface member which increases the flow resistance of the float in the water when the float is moving or moved in vertical direction.
  • the float may include or consist, at least partially, of vertically spaced horizontal segments.
  • a filling pipe is connected to the outlet chamber of the inlet valve and the filling pipe comprises means, especially a check valve for preventing the return flow of water from the cistern through the inlet valve in case of a pressure drop, especially if vacuum appears in the water supply means.
  • the means for preventing the return of water from the cistern through the inlet valve, especially said check valve preferably includes a sound reducing means for reducing the noises generated by the flow of water when filling the cistern.
  • the cistern assembly for flush toilets of the invention enables a very wide variety of particular designs and applications.
  • the cistern assembly can be designed and operated as an automatically refilling device, as a device refilling upon external command only, or as a device in which the cistern is not refilled in the case of a system defect caused by leakage or a sealing failure.
  • Fig. 1 is a skech depicting by way of example only the schematic design of a first embodiment of the invention
  • Figs. 2A and 2B are sectional and elevational views of a first embodiment of an inlet valve of the cistern assembly of the invention
  • Figs. 3 A and 3B are elevational sketches of a second embodiment of the inlet valve of the cistern assembly of the invention
  • Figs. 4A and 4B are sectional and elevational views of a third embodiment the inlet valve of the cistern assembly of the invention
  • Figs. 5A-5C are sketches depicting by way of example only, the cistern assembly of the invention in three characteristic modes of operation
  • FIG. 6 is a sketch showing as a special detail and by way of example only, an alternative design of the flush device actuator
  • Figs. 7A-7D are a series of sketches depicting as a first example, an embodiment and the operation of a combined float
  • Figs. 8A-8F are a series of sketches depicting as a second example, another embodiment and the operation of a combined float
  • Figs. 9A-9F are sketches depicting a further embodiment and the operation of a combined float
  • Fig. 10 depicts an alternative design of the combined float
  • Fig. 11 is the sketch of a further embodiment of a float comprising segments as an example only
  • FIGS. 12A-12C are a series of sketches depicting by way of example only, an embodiment of a check valve and its operation which prevents the return flow of water to the mains through the inlet valve
  • FIG. 13 depicts by way of example, an alternative embodiment of the check valve for the assembly that prevents the return flow of water to the mains through the inlet valve, while - 9 -
  • Figs. 14A and 14B are elevational sketches of a further embodiment of the inlet valve of the cistern assembly of the invention, as a further example.
  • FIG. 1 shows a cistern assembly embodying the invention, which includes a cistern 1, an inlet valve 2 controlled by a float 3, a flush valve 5 assigned to a bottom flush outlet 10 of the cistern 1, as well as flush device 6 by which the flush mode of operation of the assembly, i.e. the emptying of the cistern 1 by opening the flush valve 5 is to be initiated.
  • the float 3 is connected to a balance lever 20 of the inlet valve 2.
  • the flush device 6 comprises a double-arm lever 60 pivoted in a tiltable way, around a fixed fulcrum 63, and a manual actuator 65 is assigned to a first arm 61 of the double-arm lever 60, while a second arm 62 of the double-arm lever 60 is connected to the flush valve 5.
  • the inlet valve 2 shown in Figs. 2A and 2B of the cistern assembly embodying the invention has a pressure chamber 21 and an outlet chamber 22, between which a flow passage 23 of relatively large cross section is located.
  • a closure member 24 arranged in the pressure chamber 21 is assigned to the flow passage 23.
  • the closure member 24 is linearly moveable between two end positions corresponding, respectively, to a closed and an open valve state of the inlet valve 2.
  • a toggle switch mechanism 4 moving the closure member 24 from one of its end positions to its other end position in both directions is arranged between the closure member 24 and the balance lever 20.
  • the closure member 24 is moved from one position to the other when during operation, predetermined threshold rates of the torque exerted on the balance lever 20 by the force of gravity of the float 3 and/or the buoyant force are reached at or exceeded.
  • the force of gravity of the float 3 changes depending on the water level WL prevailing in the cistern 1.
  • the float 3 is in a position above a specified water level WL of the cistern 1, and so the torque of its full weight acts on the balance lever 20.
  • the inlet valve 2 is in its open thoroughfare state, and the water flowing across the inlet valve 2 fills up the cistern 1 (not shown), with its water level WL rising gradually.
  • the float 3 In the state of the inlet valve 2 shown in Fig. 2B, when reaching the prescribed water level WL, the float 3 has lost its weight as a result of being at least partially, immersed in water.
  • the toggle switch mechanism 4 also comprises an energy storing spring member 41 which helps to facilitate the driving of the mechanism between its end positions in both directions.
  • the inlet valve 2 When in operation, in the cistern assembly of the invention comprising an inlet valve 2 associated with a toggle switch mechanism 4 driving the closure member 24 of the inlet valve 2 between its end positions, the inlet valve 2 opens very quickly, in fact immediately to its total flow section when as a result of opening the flush valve 5, the drop of the water level commences, and the pre-determined threshold value of the torque necessary for opening of the valve is exceeded.
  • the refilling of the cistern 1 is started with the highest possible supply flow of water.
  • the inlet valve 2 is able to replenish the water stored in the cistern 1 with additional flush water volume even while the flush valve 5 is still open.
  • toggle switch mechanisms are well known in numerous designs, and the most diverse actual embodiments of the same can be adapted to and used in the inlet valve 2 of the cistern assembly according to the invention.
  • Figs. 2A and 2B show a toggle switch mechanism 4 comprising a coupling link 40 and a pre-tensioned spring member 41 as already referred - 11 -
  • Figs. 3A and 3B show as an elevation and in the open and closed state of the valve, respectively, an inlet valve 2 having a different design of the toggle switch mechanism 4.
  • a combined float 3 is arranged on a sleeve 28 that is slidably guided along a filling pipe 25 of the inlet valve 2.
  • An upper portion of the combined float 3 is of a density which is lower than that of the water. When immersed in water, said upper portion of the combined float 3 acts with its buoyant force via a coupling rod 29 against the balance lever 20 of the inlet valve 2 and the latter is moved into its closed valve state when the pre-determined threshold value of the torque exercised thereby on said balance lever 20 is exceeded.
  • a lower portion of the combined float 3 is of higher density than that of the water.
  • FIGs. 4A and 4B of the attached drawing depict in its respective thoroughfare and closed valve state again, an inlet valve 2 comprising in addition to the spring member 41 assigned to the closure member 24, another additional spring member 42.
  • This embodiment of the inlet valve 2 is at least within a certain range, capable of detecting and compensating changes in the mains water pressure, and in the open valve state the actual position of the closure member 24 will depend on the current, actual water pressure. Thereby, the flow of water passing the inlet valve 2 will remain substantially constant, at least between determined limits of varying means pressure.
  • FIG. 1 of the attached drawing a very simple cistern assembly embodying the invention is shown.
  • the inlet valve of a conventional toilet flush assembly has simply been replaced by an inlet valve 2 comprising a toggle switch mechanism 4.
  • the assembly shows the already mentioned - 12 -
  • the inlet valve 2 and the associated float 3 are designed and dimensioned so that subject to the changes in water level, the float 3 is on its own able to initiate the movement of the toggle switch mechanism 4 of the inlet valve 2 in both directions.
  • Figs. 5A-5C of the attached drawing show by way of example another embodiment of the cistern assembly of the invention where the toggle switch mechanism
  • the flush device 6 has a driving tongue 64 for helping to initiate the movement of the balance lever 20 of the inlet valve 2 from its closed valve state end position into its other end position corresponding to the open state of the inlet valve 2.
  • This embodiment is also suitable for implementing a so-called spare flush mode of operation of the cistern assembly, because the flush device 6 comprises two actuators 65, 66 associated both with the first arm 61 of the double-arm lever 60. Said actuators 65 and 66 provide for alternative swivels of the double-arm lever 60 of different extent.
  • the actuators 65 and 66 are arranged at opposite ends of a double-arm rocker 67. When actuated, said ends act at locations of different distances from the fulcrum 63 on the first arm 61. In a first state of operation shown in
  • the cistern 1 is filled up with water to the prescribed, desired extent, while both the inlet valve 2 and the flush valve 5 are in their closed positions.
  • the actuator 66 on the left hand side end of the rocker 67 is depressed as shown in Fig.
  • Fig. 6 depicts as an elevation, an alternative design for manually operating the flush device 6.
  • the actuator initiating the spare flush mode of operation is designed as a push button 68 acting on the first arm 61 of the double-arm lever 60 with some delay, i.e. after a stroke displacement of a certain extent only. If flushing is initiated by depressing the push button 68, the push button 68 initially carries out an
  • the cistern assembly of the invention carries out a spare flush using a small volume of water.
  • the actuator 65 acting on the first arm 61 of the double-arm lever 60 as indicated by an arrow in Fig.
  • the inlet valve 2 comprising a toggle switch mechanism 4 according to the invention will only switch over from one valve position to the other when pre-determined threshold values of the torque acting on the balance lever 20 are reached at or exceeded.
  • the weight of the float 3 which changes depending on whether the float 3 is partly or fully in or out of the water.
  • the change of weight can largely be influenced by appropriately selecting the structural materials of, and by designing the float 3 in a proper way.
  • embodiments of the cistern assembly of the present invention can be developed by which an empty cistern 1 is not re-filled automatically, if the water escaped from the cistern 1 slowly and on an ongoing basis due to failure or contamination of the flush valve 5 or other reason, whereby continuous loss of water would arise even when the assembly is not used.
  • Such embodiments of the cistern assembly of the invention can be implemented, for example, by using appropriate and advantageous designs of the float 3 to be described by way of example only, further below.
  • a thin-wall float 3 of in the given case spherical shape and of varying weight is shown in its various operating conditions in Figs. 7A-7D of the attached drawing.
  • the float 3 fixed in a way adjustable in vertical direction to a substantially rigid rod 38 suitable for transmitting force in both directions.
  • the float 3 In the bottom range of its spherical wall, the float 3 has perforations 32 and at least one perforation 32 is also provided in the upper range of the spherical wall, in order to let the inner space of the float 3 communicate with the surrounding environment.
  • the float 3 is coupled to the rod 38 by means of a drawn-in upper neck portion 33, which protrudes into the inner space of the float 3 virtually as a siphon, up to the height of the upper perforation(s) 32.
  • a drawn-in upper neck portion 33 which protrudes into the inner space of the float 3 virtually as a siphon, up to the height of the upper perforation(s) 32.
  • the float 3 In the state of operation shown in Fig. 7A, the float 3 is staying in the space above the water level of cistern 1 (not shown in the drawing) and its inner space is filled up with air. While the water level WL of the cistern 1 rises, the float 3 gradually immerses in water (Fig. 7B), and the inner space of the float 3 gradually filles up with water through the lower perforations 32 until the water reaches the upper perforation(s) 32 (Fig. 7C).
  • Fig. 7A depicts in a dotted line, a closing float 30 that can be used in preferred embodiments of the assembly as an additional component part of the float 3.
  • a closing float 30 can be arranged above the float 3 of varying weight on the same suspending rod 38 which carries the float 3.
  • the closing float 30 has a density lower than that of the water, and so in the course of the water level WL rising, and the cloasing float 30 immersing in the water, it is subjected to a buoyant force acting in upward direction whereby the torque which drives the inlet valve 2 into its closed position is substantially increased which contributes to an improved reliability of valve closing.
  • Figs. 8A-8F of the attached drawing show in combination with an additional closing float 30 of adjustable height on the rod 38, an opening float 31 of a design - 16 -
  • the closing float 31 has a density lower than that of the water.
  • the hollow opening float 31 is arranged in a fixed way on the rod 38, it has bottom perforations 32, and at least one perforation 32 is provided at its top part at the highest point of its spherical body.
  • the opening float 31 of the combined float is designed and shaped as an open top vessel, with a bottom part 34 featuring perforations 32.
  • the opening float 31 of lower arrangement comprises a closing disc 36 which is vertically moveable relative to the rod 38, and the closing disc 36 functions as a choke or closing check valve that can close the perforations 32 in the outlet direction both ways, in a sealed manner and partially whereby a flow choke is effected.
  • the upper closing float 30 of the combined float has a shape of a body of rotation. It is of lower density than that of the water, and it can be adjusted in height along the rod 38.
  • Fig. 9A depicts - 17 -
  • WL of the cistern 1 has reached the height of the closing float 30, the buoyant force acting on it drives the inlet valve 2 into its closed valve state, and the rising of the water level of the cistern 1 is stopped.
  • Fig. 9D shows the closing disc 36 resting on the bottom part 34 of the opening float 31, closing thereby, at least partially, the perforations 32 in the bottom part 34.
  • the water level in the flushing phase of operation shown in Fig. 9E, the water level
  • WL of the cistern 1 drops rapidly, whereby water is retained in the opening float 31, the weight of which after a further reduction of the water level WL (Fig. 9F) is sufficient to open the inlet valve 2 and the repeated automatic filling of the cistern 1 is started. If no closing disc 36 is used in the opening float 31 or a closing disc 36 not providing a sealed closing of the perforations 32 of the bottom part 34 is applied, the embodiment of the combined float shown in Figs. 9A-9F becomes in function closely similar to those shown in and described with reference to Figs. 7A-7D and 8A-8F above. With the changes mentioned above, due to the simultaneous emptying and loss of weight the opening float
  • the perforations 32 may also be influenced by choking or closing elements of any other known design, for example by plugs or ball type check valves.
  • any connecting linkage between the closing float 30 and the balance lever 20 must be suitable for transferring forces in both directions such as the rod 38, while the opening float 31 may be connected by to the balance lever 20 directly or indirectly, by using a flexible suspension member only.
  • the closing float 30 of a density lower than that of the water can also be designed as a bell shaped component part facing down and thus, open at the bottom. Also in such embodiments the closing float is arranged on the rod 38 in an adjustable height position relative to the rod 38. When in operation with the water level WL rising gradually in the cistern 1, air is retained in the bell shaped closing float 30, and so a buoyant force of sufficient extent - 18 -
  • Figs. 12A-12C of the attached drawing show an arrangement whereby the above requirement can fully be met.
  • a filling pipe 25 is connected to the outlet chamber 22 of the inlet valve 2 of the cistern assembly of the invention.
  • a check valve 7 duly preventing the flow of water to the inlet valve 2 from the cistern 1 is arranged the filling pipe 25.
  • the upper entrance end of the filling pipe 25 has a narrowed entrance aperture forming a valve seat 26.
  • the filling pipe 25 comprises an open bottom bell shaped valve member 70 which is lighter than the water and is arranged in a vertically moveable way within the filling pipe 25.
  • the valve member 70 comprises a rubber seal 71 located at its upper end.
  • the outer diameter of the valve member 70 is smaller than the inner diameter of the filling pipe 25, and at its bottom end position, the valve member 70 is held by a limiter 74.
  • Fig. 12A depicts the phase of operation when the inlet valve 2 opens, and the mains water pressure also opens the check valve 7.
  • Fig. 12A depicts the phase of operation when the inlet valve 2 opens, and the mains water pressure also opens the check valve 7.
  • FIG. 12B depicts the arrangement showing its state during the filling of cistern 1, when the water is allowed to unobstructed flow into the cistern 1 through the open check valve 7, via a channel 72 of annular cylindric shape between the external mantle of the valve member 70 and the inner mantle of the filling pipe 25.
  • a dotted arrow depicts the operating condition when as a result of a pressure drop vacuum is present in the delivery mains line.
  • the valve member 70 which is lighter than the water is forced to rise and the rubber seal 71 is pressed in a sealed way, against the valve - 19 -
  • FIG. 13 shows another design of the check valve 7, wherein a check ball 73 made of a material lighter than water and co-acting with a valve seat 26 of the filling pipe 25 of similar design is used as a moving closure member in the valve.
  • the water flowing in through the inlet valve 2 keeps the check ball 73 pressed against a grating or sieve type limiter 74 whereby the filling water is allowed to freely flowing into the cistern 1. If vacuum occurs in the delivery water mains, its suction effect draws the check ball 73 against the valve seat 26 of the filling pipe 25, whereby the check valve 7 closes and the return flow of water from the cistern 1 to the delivery mains is prevented with high reliability.
  • FIGs. 14A and 14B of the attached drawing another preferred design of the float controlled inlet valve 2 of the cistern assembly of the invention similar to that shown in Figs. 3 A and 3B is shown in elevation.
  • a closing float 30 as component part of a combined float is arranged in a way adjustable in hight on a sleeve 28 that is slideably guided along the filling pipe 25 of the inlet valve 2.
  • An opening float 31 having a conically shaped end portion at the top is also fixed to the sleeve 28.
  • the sleeve 28 is connected to the end of the balance lever 20 of the inlet valve 2 via a coupling rod 29 having a forked end at the top.
  • the closing float 30 and the opening float 31 are arranged in an open bottom external pipe surrounding coaxially, the filling pipe 25.
  • the inner diameter of the external pipe is slightly larger than the external diameter of the opening float 31.
  • the inlet valve of the cistern assembly of the present invention allows for a high rate of water flow therethrough resulting in a rapid filling of the cistern.
  • the flush assembly of the invention is especially suitable for serving high turnover public toilets. Its quiet operation is a highly valued benefit when it is used, for example, in hotels or in residential houses.
  • Certain embodiments of the inlet valve are able to fill up the cistern with a substantially controlled flow of water by self-regulating, at least between certain limits, the actual flow aperture through the valve, depending on the current mains pressure.
  • Embodiments of the inlet valve capable of automatic opening and closing can also be arranged as replacement units into cisterns of already existing conventional toilet flush assemblies.
  • the cistern assembly of the invention is less sensitive to contamination and limescale.
  • the assembly requires little if no maintenance, closes rapidly and reliably, and is of substantially leakproof design. It can be operated in a spare flush mode using a limited volume of water only. Toilet flush assemblies preventing any unnecessary (excess) use of water by not refilling cisterns that have been emptied slowly due to leakage in the system can also be designed by making use of the invention. In toilet flush assemblies according to the present invention as compared to those of known assemblies, a cistern of substantially smaller size can be used, and as a result of this, the entire cistern assembly could be more compact and of enhanced aesthetic appearance.

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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)
  • Float Valves (AREA)

Abstract

L'invention concerne un ensemble citerne comprenant: une citerne de chasse d'eau (1); une vanne d'admission régulée (2) avec flotteur, installée à l'intérieur de ladite citerne (1); une vanne de chasse d'eau (5), raccordée à un orifice de sortie de chasse d'eau (10) de ladite citerne (1); et un dispositif de chasse d'eau (6), permettant d'enclencher le mode de fonctionnement chasse d'eau de cet ensemble citerne, par ouverture de ladite vanne de chasse d'eau (5). Le flotteur (3) est relié au levier d'équilibrage (20) de la vanne d'admission (2). L'ensemble citerne de cette invention comprend également une vanne d'admission (2) pourvue d'un mécanisme interrupteur à levier (4), placé entre un élément obturateur et le levier d'équilibrage (20) de cette vanne d'admission (2), de manière à faire passer ledit élément obturateur de la vanne d'admission (2) d'une extrémité à une autre, qui ouvrent ou ferment respectivement ladite vanne d'admission (2) lorsque des valeurs de seuil prédéfinies du couple exercé par le flotteur (3) sur le levier d'équilibrage (20) sont atteintes ou dépassées. Ce flotteur (3) comprend de préférence au moins deux parties de densités différentes, l'une de ces parties présentant une densité inférieure à celle de l'eau, alors que la densité de l'autre partie est au moins égale, voire supérieure, à celle de l'eau. Ce dispositif de chasse d'eau (6), qui permet d'enclencher le mode de fonctionnement chasse d'eau dudit ensemble citerne par ouverture de la vanne de chasse d'eau (5), comprend en outre un levier à deux bras (60), qui pivote autour d'un point d'appui fixe (63) de manière à pouvoir basculer, au moins un dispositif d'actionnement manuel (65) étant relié à un premier bras (61) dudit levier à deux bras (60), le second bras (62) de ce levier (60) étant relié à la vanne de chasse d'eau (5).
PCT/HU1998/000102 1998-02-05 1998-12-17 Ensemble citerne pour toilettes a chasse d'eau WO1999040264A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU17767/99A AU1776799A (en) 1998-02-05 1998-12-17 Cistern assembly for flush toilets
HU0100583A HU224106B1 (hu) 1998-02-05 1998-12-17 WC-öblítő szerkezet

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
HU9800249A HUP9800249A1 (hu) 1998-02-05 1998-02-05 Bereznai System féle BNSC-WC rendszer
HUP9800249 1998-02-05
HUP9801775 1998-08-03
HU9801775A HU9801775D0 (en) 1998-02-05 1998-08-03 Bereznai's bnsc-wc system

Publications (1)

Publication Number Publication Date
WO1999040264A1 true WO1999040264A1 (fr) 1999-08-12

Family

ID=89996908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1998/000102 WO1999040264A1 (fr) 1998-02-05 1998-12-17 Ensemble citerne pour toilettes a chasse d'eau

Country Status (3)

Country Link
AU (1) AU1776799A (fr)
HU (1) HU9801775D0 (fr)
WO (1) WO1999040264A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007017496A2 (fr) * 2005-08-06 2007-02-15 Abertax Research & Development Ltd. Systeme pour une ouverture et/ou fermeture d'une vanne d'entree et/ou d'une vanne de sortie d'un contenant de liquide
WO2015159180A1 (fr) * 2014-04-15 2015-10-22 Bhukya Ashok Kumar Système et procédé pour chasse d'eau de toilettes comprenant un système de soupape d'aspiration commandé par levier comprenant un mécanisme de chasse d'eau à réservoir commandé
CZ306148B6 (cs) * 2014-12-15 2016-08-24 ÄŚeskĂ© vysokĂ© uÄŤenĂ­ technickĂ© v Praze, Fakulta stavebnĂ­, Katedra hydrotechniky Zařízení pro zefektivnění transformační funkce suchých nádrží stabilizací odtoků spodních výpustí
CN109736404A (zh) * 2019-03-04 2019-05-10 九牧厨卫股份有限公司 一种清洁马桶和排水阀组件
CN113996130A (zh) * 2020-07-27 2022-02-01 长鑫存储技术有限公司 存水装置及废气处理系统
AU2022201888B1 (en) * 2022-03-18 2023-02-02 Philmac Pty Ltd A float valve with a transient mitigation function.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1104558A (fr) * 1954-05-14 1955-11-22 Robinet à flotteur, à enclenchement
US2745427A (en) * 1951-12-08 1956-05-15 Crane Co Tripper rod mechanism
US2756769A (en) * 1954-04-26 1956-07-31 Circle Valve Co Ball cock for flush tanks
FR1223714A (fr) * 1959-05-05 1960-06-20 Robinet à flotteur
US5062751A (en) 1991-03-13 1991-11-05 Shippers Paper Products Company Economy void filler
US5119845A (en) 1991-06-07 1992-06-09 Chuang M J Device of water plug noise elimination and water seal flush toilet
US5287882A (en) * 1993-05-11 1994-02-22 Moen Incorporated Ball cock assembly float with drain openings
EP0704581A2 (fr) 1994-09-29 1996-04-03 Caroma Industries Limited Mécanisme de soupape

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745427A (en) * 1951-12-08 1956-05-15 Crane Co Tripper rod mechanism
US2756769A (en) * 1954-04-26 1956-07-31 Circle Valve Co Ball cock for flush tanks
FR1104558A (fr) * 1954-05-14 1955-11-22 Robinet à flotteur, à enclenchement
FR1223714A (fr) * 1959-05-05 1960-06-20 Robinet à flotteur
US5062751A (en) 1991-03-13 1991-11-05 Shippers Paper Products Company Economy void filler
US5119845A (en) 1991-06-07 1992-06-09 Chuang M J Device of water plug noise elimination and water seal flush toilet
US5287882A (en) * 1993-05-11 1994-02-22 Moen Incorporated Ball cock assembly float with drain openings
EP0704581A2 (fr) 1994-09-29 1996-04-03 Caroma Industries Limited Mécanisme de soupape

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007017496A2 (fr) * 2005-08-06 2007-02-15 Abertax Research & Development Ltd. Systeme pour une ouverture et/ou fermeture d'une vanne d'entree et/ou d'une vanne de sortie d'un contenant de liquide
WO2007017496A3 (fr) * 2005-08-06 2007-05-18 Abertax Res & Dev Ltd Systeme pour une ouverture et/ou fermeture d'une vanne d'entree et/ou d'une vanne de sortie d'un contenant de liquide
AU2006277943B2 (en) * 2005-08-06 2011-08-11 Abertax Research & Development Ltd. System for opening and/or closing an inlet valve and/or an outlet valve of a liquid container
US9200723B2 (en) 2005-08-06 2015-12-01 Abertax Research & Development Ltd. System for opening and/or closing an inlet valve and/or an outlet valve of a liquid container
WO2015159180A1 (fr) * 2014-04-15 2015-10-22 Bhukya Ashok Kumar Système et procédé pour chasse d'eau de toilettes comprenant un système de soupape d'aspiration commandé par levier comprenant un mécanisme de chasse d'eau à réservoir commandé
CZ306148B6 (cs) * 2014-12-15 2016-08-24 ÄŚeskĂ© vysokĂ© uÄŤenĂ­ technickĂ© v Praze, Fakulta stavebnĂ­, Katedra hydrotechniky Zařízení pro zefektivnění transformační funkce suchých nádrží stabilizací odtoků spodních výpustí
CN109736404A (zh) * 2019-03-04 2019-05-10 九牧厨卫股份有限公司 一种清洁马桶和排水阀组件
CN109736404B (zh) * 2019-03-04 2024-03-29 九牧厨卫股份有限公司 一种清洁马桶和排水阀组件
CN113996130A (zh) * 2020-07-27 2022-02-01 长鑫存储技术有限公司 存水装置及废气处理系统
CN113996130B (zh) * 2020-07-27 2022-06-24 长鑫存储技术有限公司 存水装置及废气处理系统
AU2022201888B1 (en) * 2022-03-18 2023-02-02 Philmac Pty Ltd A float valve with a transient mitigation function.

Also Published As

Publication number Publication date
HU9801775D0 (en) 1998-09-28
AU1776799A (en) 1999-08-23

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