Classifications

• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
  • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
  • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
  • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
  • E03D9/033—Devices placed inside or dispensing into the cistern
  • E03D9/037—Active dispensers, i.e. comprising a moving dosing element
• • 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
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
  • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
  • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
  • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
  • E03D9/033—Devices placed inside or dispensing into the cistern
  • E03D9/038—Passive dispensers, i.e. without moving parts
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
  • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
  • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
  • E03D2009/028—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a liquid substance

Definitions

• Apparatus for the dispensing of a liquid adapted to be placed in a volume of liquid with fluctuating liquid level, particularly adapted for metered disp sa ⁇ of chemicals to a cistern.
• the present invention concerns an apparatus for the dispensing of a liquid, adapted to be placed in a volume of liquid with fluctuating liquid level, for instance in a reservoir or a cistern.
• the apparatus is further more adapted to dispense liquid only when the fluctuating liquid level has been reduced to a predetermined level.
• the apparatus concerns particularly a dispensing apparatus for supply of additives, usually in the form of chemicals and/or deodorising agents, to a water cistern.
• a water cistern on a water closet defines an example of a volume of liquid where it may be appropriate to add additives, and the present invention is therefore particularly adapted for this purpose.
• the invention also includes a system that ensures improved flushing of a water closet, and this may be used tos reduce water consumption.
• the present invention is particularly adapted to relieveo this problem.
• US patent number 4,539,717 shows a device for a chemical solution including a cylinder containing a block of chemicals.
• the cylinder is equipped with openings for flow of liquids/air in the system.
• US patent number 2,098,294 shows an apparatus for the dosing of deodorizing agents with a cylinder around a block of chemicals that is carried by a float.
• the cylinder is equipped with openings for exchanging the air/water of the cistern.
• US patent number 3,914,805 is an apparatus for metering deodorizing agents that pumps out deodorant when the cistern, is filled.
• Norwegian patent number 309,662 (same applicant) describes an apparatus for dosed or metered dispensing or deposition of chemicals to a cistern.
• the apparatus includes a cylinder containing a float that carries a block of chemicals, where the cylinder is designed such that the block of chemicals floats upwards in the cylinder in contact with water pouring into the cylinder from a hole in the wall of the cylinder, and irrigates the block of chemicals.
• This apparatus dispenses chemicals to the cistern just before the cistern is completely emptied and the chemicals are therefore remaining in the water lock without chemicals being flushed to the sewer.
• the additive will normally be chemicals in the form of a quid or solids such as pellets, powder, tablets or blocks. It has proved necessary to develop a system with a reduced number of movable parts and seals, because movable parts easily can be jammed, and are exposed to wear and are in general complicating and cost intensive elements that are more prone to malfunction. This is a particular problem with water with high calcium content.
• the apparatus according to the invention may be designed to ensure that during the last part of the flushing, an additional flushing from the dispenser with increased pressure in relation to the pressure during the last part of the flushing from the cistern, is flushed. This will contribute to flush the toilet bowl sufficiently clean. This may also be used to reduce the necessary flushing, and accordingly reduce the water consumption of the water closet.
• the invention concerns a dispenser that can be inserted in a cistern for controlled emission of additives, normally in the form of chemicals from a block of chemicals, or from a container with liquid chemicals to the water in the cistern and/or to the air surrounding the cistern.
• the chemicals may be provided in the dispenser in such a way that the dispenser gives off a controlled amount of chemicals each time the cistern is used, and such that the chemicals that are dispensed to the water in the cistern mainly remains in the cistern, for instance in the closet bowl, instead of being flushed directly through the system without being of any use.
• the dispenser may be designed such that the chemicals do not come in contact with the water in the cistern, but only works as a deodorizing agent that can produce a wanted scent to the air in the toilet room after each flushing from the WC to the sewer. Furthermore, the dispenser can be used to contribute to biological balance during flushing from a cistern to the surroundings, for instance during emission to watercourse or open water.
• the additive will in many cases comprise tensides that will leave a layer of film inside the closet bowl because the surface tension is de-ionized in the dispenser.
• the dispenser can be used to contribute to biological balance by emission of favourable substances for this purposes from the cistern to the surroundings, for instance by emission to river systems or open water.
• Dispensers that maintains a water column before they are activated will hold back what is not used when the cistern valve to the closet is shut because inlet of water from the water system already has flowed into the cistern from the first moment when the toilet is flushed, such that it is created a counter current and the chemicals that not are used are thereby held back in the cistern.
• the dispensing apparatus comprises a control system that ensures that a metered amount of chemicals are dispensed out of the system at a predetermined level in the water cistern. Even though the apparatus may be used to dispense chemicals in any quantity of liquid whose level fluctuates, the apparatus according to the invention particularly adapted for being used in a cistern on water closets.
• the dispensing apparatus that is adapted to be placed in reservoir or cistern with a fluctuating liquid level, is furthermore adapted to dispense liquid only when the fluctuating liquid level is reduced to a predetermined level.
• the apparatus includes a longitudinal, hollow main body, shaped as a cylinder, a channel, a tube or a longitudinal profile, for instance an extruded aluminium profile or cylinder with an upper end and a lower end.
• the main body thereby defines a cavity.
• the shape of the main body may be adapted to the internal shape of the cistern.
• upper and lower are intended to describe a localisation, where lower defines the placement during normal use of the apparatus, where the upper end will be closest to a water surface in a filled cistern, and the lower end will be closest to the bottom of a cistern.
• a check valve or one way valve for instance a ball valve, is provided at the upper end of the main body and is adapted to relive pressure out of the cavity of the main body.
• a control channel or "vacuum channel” that for instance may be shaped as a tube has an upper end in fluid flowing contact with the cavity of the main body and a lower end adapted to be in fluid flowing contact with the reservoir or cistern.
• the lower end includes preferably an opening or an end of the tube, controlling when the liquid is to be dispensed in relation to the liquid level in the cistern. The opening is in other words placed at the liquid level in the cistern, when an outflow from the dispenser is desired.
• the dispenser is filled through the lower opening in the main body to the same level as the liquid level in the cistern. Air or deodorizers are emitted through the valve at the upper end of the main body. The control channel is simultaneously filled to the same level.
• Fig. 1 shows an embodiment of a dispenser for liquid chemicals in a first position.
• Fig. 2 shows the dispenser as described on fig. 1 placed in a water closet cistern in a resting position prepared with a chemical.
• Fig. 3 shows the dispenser as defined on fig. 1 under the first phase during emission to closet bowl/sewer.
• Fig. 4 shows the dispenser from fig. 1 during the last phase of emission via the closet bowl to the sewer.
• Fig. 5 shows the dispenser as shown on fig. 1 during emission of chemicals to the closet bowl.
• Fig. 6 shows the dispenser as defined on fig. 1 during preparation before the next emission (flushing).
• Fig. 7 shows another embodiment of the invention adapted to be used with a solid block of chemicals.
• Fig. 8 shows the dispenser of fig. 7 placed in a closet cistern in a resting position.
• Fig. 9 shows the dispenser as defined on fig. 7 during a first phase with outlet through closet bowl to sewer.
• Fig. 10 shows the dispenser as defined on fig. 7 during the last phase of the emission through closet bowl to sewer.
• Fig. 11 shows the dispenser on fig. 7 during the emission to closet bowl.
• Fig. 12 shows the dispenser on fig. 7 during the emission to closet bowl and simultaneous metering for preparation of the next emission, in that liquid is sprayed over the block of chemicals.
• Fig. 13 shows the dispenser of fig. 7 during preparation before the next emission.
• Fig. 14 shows a water cistern with an adapter for reducing water consumption, seen from above.
• Fig. 15 shows the water system as shown on fig. 14 seen from the front.
• a dispenser for dispensing a liquid, and metering of an additive preferably a chemical.
• an additive preferably a chemical.
• chemicals that are expected suitable are tensides that will create a film layer and reduce the surface tension in the closet bowl, such that layers of dirt and matter in the closet bowl gets stuck less easily.
• the chemicals may be used to contribute to biological balance during outlet from the cistern to the surroundings.
• Other chemicals that may be used may include deodorizing agents or other elements that can improve the indoor climate.
• the dispenser comprises a cylinder or a main body 1 to be provided substantially vertically in a cistern in a water closet.
• the main body may have any cross section, for instance rectangular, oval, adapted to a shape of a cistern or have any other suitable cross section.
• the main body is channel- or tube shaped, and has a dimension in the longitudinal direction adapted such that the body fits in the cistern it is adapted to be placed in.
• the diameter of the main body or the cross sectional area is adapted such that a required amount of chemicals and a final flow of liquids is adapted to the required volume of a final flow of liquid.
• the main body has a lower part or lid 1 e that seals the lower part of the main body.
• the bottom lid 1e may be equipped with means for securing the main body to the cistern (not shown).
• the upper end or lid 5 of the main body air tightly seals the upper end of the main body.
• the lid includes a check valve 7, for instance a ball valve with a ball 8.
• the lid 5 includes a hose 9 for the filling of chemicals.
• the hose 9 includes means for air tight sealing (not shown).
• the lid may for instance be sealed against the main body with an O-ring 6.
• An inner body 2 shown as a cylinder is rigidly secured to the inside of the main body 1 , and may have the same shape as the main body, but is of a smaller dimension such that it fits in the main body, and such that it is created an annuls or channel 3 between the main body and the inner body or cylinder 2.
• the cylinder 2 is shown secured to the underside of the lid 5, but may be rigidly secured inside the apparatus in any other way as long as an annulus or channel is created between the main body and the cylinder 2 and as long as the cylinder 2 is provided in an air tight manner towards the lid 5.
• the cylinder 2 serves as a container for a chemical and includes a hole for drainage at its upper end.
• the annulus or slot 3 is adapted for passage of liquid/air and is in one embodiment formed by the difference in diameter between the cylindrical main body and the cylindrical chemical container 2.
• the chemical container 2 extends from the upper end of the main body and down to a height above the bottom part 1e.
• a metering device is included, shown as a ball valve, with a sealing ball or buoyancy ball 13 that is adapted to seal between the valve seats 14 and 18.
• the ball is of a material that seals the valve against a valve seat and that is resistant to the additives and the liquid in the dispenser. Furthermore, the ball 13 has a density giving it buoyancy in the liquid in the dispenser.
• Chamber 16 for liquid is created in the valve between the valve seats 14 and 18, and the chamber 16 forms a certain liquid volume.
• An indentation 17 that serves as an air pillow or buoyancy part is placed under the chemical container 2.
• the outlet tube 1d is placed directly above the bottom lid 1 e of the cylinder or main body 1.
• a tube 12 in fluid communication with slot 3 is placed therein between the main body 1 and the chemical container 2.
• the tube is sealingly provided in the main body for instance with a seal 11.
• the tube 12 includes a lower sleeve 19 that may be "telescopically" adjusted lengthwise to vary the total length of the tube 12 to be able to control when the dispenser is to be activated of the water level 59 of the water system.
• this height may not need to be controllable if the apparatus according to the invention is adapted for use in a specific cistern or for a specific water level.
• the following figures 2, 3, 4, 5 and 6 shows embodiments of the invention for dispensing liquid chemicals as shown on fig. 1 during different steps of the dispensing process.
• the figures show the dispenser installed in a cistern 48 in a water closet (not shown).
• Fig. 2 shows a first resting position where the cistern is filled with water, ready for being flushed with subsequent flushing of the water to the closet bowl. Furthermore, it is shown that the main body or cylinder 1 at its lower end, includes a volume that in this phase is filled with a liquid column with already mixed chemical/water 58 in the lower part of the cylinder 1.
• the tube 12 with sleeve and annulus 3 is filled with water at the same level as the water level 59 of the cistern.
• the tube 12 is a control tube that governs when the mixed chemical/water 58 shall be let out of the opening 1d for dispensing the chemical/water 58 to the closet bowl.
• the closet includes a flushing valve for cistern water to the sewer/closet bowl including a valve seat 48b and a valve body 48a.
• An opening 48c is created between the valve body 48a and the valve seat 48b during flushing of the toilet such that water from the cistern can flow between the valve body 48a and the valve seat 48b.
• the water column 58 is held back in the cylinder 1 as also the ball is sealingly sucked towards the valve seat 14 because of the negative pressure in the upper part of the body.
• the level of the water column 58 that is held back also extends up in annulus 3 between the cylinder 1 and the cylinder 2.
• the air cavity or air pillow 17 presses the buoyancy ball 13 towards the valve seat 14 from the water level of the cylinder 1.
• Fig. 4 shows a new phase where the water level 59 in the water cistern 48 is at a level such that the water column 48 is held back in the cylinder 1 without flowing out of outlet 1d while the water passes the opening 48c.
• the negative pressure in the tube 12 through the drainage hole 4 and the upper part of the dispenser 1 is maintained to allow chemicals 10 to remain in the upper cavity of the chemical container 2.
• the negative pressure also propagates to the annulus 3 of the cylinder such that the water column with a pressure head for already mixed chemical 58 is maintained.
• the negative pressure will suck some water up in the tube 12.
• the buoyancy ball 13 is maintained sealingly against seal 14 in that the air pillow 17 maintains a pressure 13a towards the ball at the same time as the chemical container 2 sucks in water because of the negative pressure in the tube 12 that creates a "pipette-effect".
• the ball 8 in the ball valve 7 is still closed for inlet of air in the upper part of the main body 1.
• the dispenser may automatically be adjusted in relation to this in that the lower part 99a is adjusted to a higher level than the level 99b represented by the lower part of the chemical container 3 to maintain the water surface towards the air pillow 17.
• the buoyancy ball 13 will get an impulse pressure in a direction away from the seat 14 from the chemical container 2 when the air comes into the control tube 12, but will immediately find its way back to the seat 14 because the air pillow 17 still is intact.
• the dispenser will automatically sense this during a complete or reduced flushing regardless of whether it maintains the air pillow or not. In this process the ball 8 in the check valve 7 will seal the chemical container 3 for air.
• Fig. 6 shows the dispenser during filling of water in the cistern for preparation to the next flushing.
• the cistern is closed in that the valve body 48a seals against the valve seat 48b.
• the water level will also rise in the control tube 12 and in the annuls 3 between the chemical container 2 and main body 1.
• the water level reaches the air pillow 17, level 99b on fig. 5, it is liberated a small amount of chemical 10 from the chemical container 2 into the water column 58 created by the lower part of the main body and that forms the reservoir for water/chemical, in that buoyancy ball 13 is lifted up from the seat 17 to the seat 14. In this position, the buoyancy ball 13 closes for the chemical.
• Fig. 7 shows another embodiment of the invention where a solid chemical in the form of a block of chemicals or chemical block substitutes the liquid chemical.
• the chemical block may be placed in a cylinder 20 including a cartridge 21 that may be inserted through an opening 26 in the lid of the cylinder, and can rest on a collar 25.
• the cartridge 21 has a lid 24 that can be charged with a chemical block 22 and is magazined automatically downwards 29 as it is consumed.
• the invention does not exclude other forms of solid chemicals, for instance in the form of powder or pellets.
• the chemical block 22 includes a profile that creates an area 27 for liberation of chemicals when a jet of water impinges on this area, and results in the chemical block liberating a metered amount of chemicals to the water in the container.
• the chemical block 22 rests on a bottom of the cartridge 23.
• the dispenser defines an internal volume 28 for liberation of already mixed chemical/water.
• the figures 8, 9, 10, 11 , 12 and 13 show various sequences during the dispensing of the dispenser shown on fig. 7.
• the sequences correspond to the sequences described in relation to the embodiment using liquid chemicals.
• Fig. 8 shows the dispenser with a chemical block in a prepared position in the closet cistern 48 where the valve of the cistern with the valve body 48a is sealed against the valve seat 48b.
• the already mixed chemical/water 47, internally in the dispenser 1 is at the same level as the water in the water system and in the control or vacuum tube 12.
• a check valve, for instance a ball valve 7 in the lid is closed with a ball 8.
• the chemical block 22 of the cartridge 21 is preferably sealingly provided in relation to the surroundings to prevent it from drying out, as this would prevent the block from liberating chemicals for each flushing through the area 27 of the block.
• Fig. 9 shows the same process for outlet as fig. 3, but the dispenser shown on fig. 9 includes a chemical block.
• the valve of the water cistern 48 is open for passage of water through an opening 48c and water flushes to the sewer through the valve. This means that the water level 59 will sink and create the negative pressure 62 in the control tube 12 such that the water column 58 with already mixed chemicals in the dispenser is reduced.
• the chemical block 22 in the cartridge 21 is not affected in this phase.
• the valve 7 is closed for inlet of air in the dispenser during this step.
• Fig. 10 shows the same step for negative pressure as fig. 4, but the dispenser is equipped with a chemical block 22 in the cartridge 21 instead of liquid chemicals. It is shown the last phase where the water level 58 in the cistern 48 is at a level just before it passes the lower opening of the vacuum tube 12. The water column 58 is held back in the cylinder 1 while the water from the cistern passes through the opening 48c out to the sewer through the closet bowl, between the valve seat 48b of the cistern and the valve body 48a. During this process the negative pressure 62 in the tube 12 is maintained, but the tube 12 will lift some water because of the negative pressure that creates a "pipette-effect" and sucks water up from the water cistern. In this condition, the valve 7 is still sealed.
• Fig. 11 shows the dispenser in a phase corresponding to the one shown on fig. 5, where the chemical block 22 in the cartridge 21 with an area of the chemical 27, later will be flushed of a water plug 103 sucked up from the cistern water due to the negative pressure in the upper part of the dispenser created during the lowering of the water level of the cistern.
• chemical is liberated from the chemical block to the dispenser 1 along with water that is flushed to the toilet bowl through the opening 48c of the system valve. This flushing only passes to the toilet bowl without passing the water lock, because the chemical flushing only is performed at the end of the flushing.
• the initiation of the chemical flushing is a result of the water level 59 getting lower than the inlet 12a of the control tube 12, and thereby allowing air into the control tube 12 such that the negative pressure in the dispenser ceases and water column 58 is flushed. In this condition the valve 7 is shut.
• Fig. 12 shows a step corresponding to the embodiment for the liquid dispensing shown on fig. 5.
• the figure shows that the water plug 103 hits the chemical block to liberate chemicals in the dispenser at the same time as already mixed chemical/water is flushed to the toilet bowl.
• the water cistern 48 lets out water in that the valve of the cistern still is open.
• the water level 59 allows air into the tube 12 such that negative pressure 62 of the cylinder ceases.
• the water plug 103 is sucked into and impinging on the cartridge 21 with a chemical block to impinge the area 27 of the chemical block to entrain the solved chemical to the internal volume of the cylinder for preparation of the next flushing to the closet bowl.
• the valve 7 is closed for inlet of air into the cylinder 120.
• Fig. 13 shows the filling of the dispenser after use corresponding to fig. 7.
• the air and possibly deodorizers are let, out of the cylinder 58 for liquid and chemical block 22, out of the valve 7.
• the valve 48a, 48b of the cistern is closed, and water is filled into the cistern.
• the water level 59 will rise in the cistern and in the dispenser until it reaches the maximum level of the cistern.
• the valve 8 will be closed such that the chemical block does not dry out.
• the dispenser will be prepared for the next flushing as shown on fig. 8.
• Fig. 14 shows another use of the vacuum control system used in a water cistern for reduced water consumption and possibly for adding chemicals.
• Fig. 14 shows the water cistern 48 for a toilet seen from above with the ordinary water reservoir 143.
• An adapter 142 according to the invention is placed in the water reservoir and includes a channel with a smaller volume that has an open end at the bottom and at the top.
• the bottom is equipped with a seal, preferably a brush seal, denoted as 159 on fig. 15, for slowing the water.
• the channel 142 encloses the bottom valve 48a, 48b of the water cistern 48.
• the channel 142 also encloses the dispenser 1 (here shown without a chemical container) in an embodiment where the top valve 7 includes a conical top seat 145, where a ball 148 is resting. This valve substitutes valve 7 with ball 8 shown in the previous embodiments.
• a tube 12 with a control hose is placed into a vacuum sleeve 147.
• Fig. 15 is a side elevation of fig. 14 where it is shown various water levels during the emptying of the system to the closet bowl.
• a release mechanism for flushing 15d is placed through the lid 15E of the system and lifts the valve body 48a from the valve seat 48b for outlet of cistern water to the closet bowl/sewer.
• the water level 156 in the adapter/channel 151 will be reduced faster than the water level 154 that encapsules the channel because of the seal, preferably the brush seal 159, that slows the water from the ordinary cistern 48.
• the emptying of the channel 151 will create a higher water column 15A in the cylinder 1 because the valve ball 148 will be sucked against the valve seat 145 because the control hose 12 sucks air down to a level 155 where the air is let back into the dispenser when the water level in the cistern becomes lower than the lowermost level of the sleeve 147.
• the negative pressure in the dispenser will cease and accelerate the last phase of water to the closet bowl for better flushing of the bowl through an active horizontal flushing in the toilet bowl at the end of the flushing, during the last phase of the flushing to the toilet bowl. Normally the pressure of the flushing is reduced with the water level in the cistern.
• the valve body 48a When the water in the cistern has reached its lowest level, the valve body 48a abuts the valve seat 48b and the cistern is closed for further flushing. Thereafter the level of the cistern is increased to a maximum. The water that was left in the cistern between the adapter and the outer walls of the cistern constitutes the reduced amount of water. After the filling, the level in the dispenser, in the adapter and in the cistern will be same.

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• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Hydrology & Water Resources (AREA)
• Water Supply & Treatment (AREA)
• Epidemiology (AREA)
• Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
• Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Applications Claiming Priority (3)

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• 2002
  • 2002-08-16 NO NO20023920A patent/NO318288B1/no unknown
• 2003
  • 2003-08-14 WO PCT/NO2003/000276 patent/WO2004016869A1/en not_active Application Discontinuation
  • 2003-08-14 CN CN 03824270 patent/CN1688776A/zh active Pending
  • 2003-08-14 AU AU2003251246A patent/AU2003251246A1/en not_active Abandoned
  • 2003-08-14 EP EP03788188A patent/EP1556556A1/de not_active Withdrawn

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