WO2007141704A1 - A dispenser for dispensing a dosing liquid into a toilet cistern - Google Patents
A dispenser for dispensing a dosing liquid into a toilet cistern Download PDFInfo
- Publication number
- WO2007141704A1 WO2007141704A1 PCT/IB2007/051999 IB2007051999W WO2007141704A1 WO 2007141704 A1 WO2007141704 A1 WO 2007141704A1 IB 2007051999 W IB2007051999 W IB 2007051999W WO 2007141704 A1 WO2007141704 A1 WO 2007141704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outlet opening
- cistern
- dispenser
- container
- plug
- Prior art date
Links
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
Definitions
- This invention relates to a dispenser which can be located in a toilet cistern for dispensing a dosing liquid into the cistern.
- a dispenser which can be located in a toilet cistern for dispensing a dosing liquid into the toilet cistern, the dispenser including:
- a refillable container for holding the dosing liquid, the container having an outlet opening through which the dosing liquid can be discharged into the toilet cistern;
- valve which includes a valve member which is displaceable between a closed condition for closing off the outlet opening to prevent dosing liquid from being discharged from the container into the cistern and an open condition which allows the dosing liquid to be discharged into the cistern, and a float that is operable to displace the valve member into its closed condition when the water level in the cistern is at a predetermined control level and into its open condition when the water in the cistern is below said control level.
- the valve member may be configured to be displaceable between said closed and open conditions and a second closed condition when the water level is at a predetermined second control level, which is below the first control level.
- the valve member may be in the form of a plug having a first plug formation and a second plug formation and a connecting portion connecting and extending between the first and second plug formations, the connecting portion being sufficiently narrow to be received in the outlet opening of the container in a configuration wherein the first plug formation closes off the outlet opening from an underside of the outlet opening in said closed condition of the valve member and the second plug formation closes off the outlet opening from an upper side of the outlet opening in the second closed condition of the valve member.
- the second plug formation may include a ram formation which is receivable in the outlet opening to push dosing liquid through the outlet opening and into the toilet cistern as the plug is displaced from the closed condition of the valve member to the second closed condition of the valve member.
- the outlet opening may be dimensioned and configured to allow the dosing liquid to be discharged from the container at a predetermined flow rate when the outlet opening is open.
- the support means may include a weighted base that is spaced from and disposed operatively below the container, the base being locatable on the bottom of the cistern and includes support members which extend between the base and the container.
- the support members may be operable to guide the float as it rises and falls with the level of the water in the cistern.
- Figure 1 shows a schematic perspective view of a dispenser in accordance with the invention
- Figure 2 shows a schematic perspective view of the valve of the dispenser of Figure 1 ;
- Figure 3 shows a schematic perspective view of the refillable container and support means of the dispenser of Figure 1 ;
- Figure 4 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the first closed condition;
- Figure 5 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the open condition;
- Figure 6 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the second closed condition;
- Figure 7 shows a schematic sectional side view of another embodiment of a valve member of a dispenser in accordance with the invention, with the valve member in the first closed condition;
- Figure 8 shows a schematic sectional side view of the valve member of Figure 7, with the valve member in the second closed condition; and Figure 9 shows a cross-sectional view of the shaft of the valve member of Figure 8, sectioned along section line IX-IX.
- a dispenser in accordance with the invention is designated generally by reference numeral 10.
- the dispenser 10 comprises a container 12, support means in the form of a base 14 and four support members 16; and a valve comprising a float 18 and a valve member comprising a plug 20 disposed at an upper end of the float 18.
- the dispenser 10 is located in a cistern 22 to dispense a dosing liquid 24 such as a sanitary liquid and/or deodorizing liquid that is held in the container 12, into the cistern 22.
- the container 12 is generally cylindrical and is open-topped to allow refilling.
- the container 12 defines an operative horizontal floor 26 at the lower end thereof.
- An outlet opening 28 is defined centrally in the floor 26, through which the dosing liquid can be discharged into the cistern 22.
- the outlet opening 28 is dimensioned and configured to allow the dosing liquid 24 to be discharged from the container 12 at a predetermined flow rate when the outlet opening 28 is open.
- the base 14 is weighted and rests on the bottom of the cistern 22, in use.
- the support members 16 extend upwardly from the base 14.
- the support members 16 support the container 12 at an elevated position above the bottom of the cistern 22.
- the container is supported above the high water level 46 (the water level to which the cistern is filled before the toilet is flushed) of the water 40 in the cistern 22.
- the float 18 is of moulded plasties material and has a generally cylindrical section 30 and a two-part frusto-conical section 32. The float 18 fits between the support members 16, which guide the float 18.
- the plug 20 is secured to an upper end of the float 18.
- the plug 20 defines a first frusto-conical plug formation 34, a second frusto-conical plug formation 36 and a shaft 38 extending between the plug formations 34,36.
- the shaft is 38 received in the outlet opening 28 with the first plug formation 34 located below the floor 26 and the second plug formation 36 located above the floor 26.
- the first plug formation 34 and second plug formation 36 both taper towards the shaft 38, with the widest part of each plug formation being wider than the outlet opening 28 and the narrowest part of each plug formation being narrower than the outlet opening 28.
- the dispenser 10 is adapted to dispense the dosing liquid 24 into the water 40 in the cistern 22 as water is flushed from the cistern 22 into a toilet bowl.
- a predetermined upper water level 42 for example at the high water level 46 of the water in the cistern prior to the toilet being flushed, as shown in Figure 4 of the drawings
- the float 18 keeps the first plug formation 34 lodged in the outlet opening 28 of the container 12, thereby closing off the outlet opening 28 in a first closed condition of the valve. In the first closed condition of the valve, dosing liquid 24 is thus prevented from being discharged from the container 12 into the cistern 22.
- the outlet opening 28 is open only for the time period when the water 40 in the cistern 22 is between the upper and lower water levels 42, 44 (i.e. between the first and second closed conditions of the valve).
- the volume of dosing liquid 24 which is discharged into the cistern 22 can thus be controlled by, for example, varying the length of the shaft between the plug formations of the plug and/or varying the flow rate of the dosing liquid 24 by, for example, varying the size of the outlet opening 28 or varying the viscosity of the dosing liquid 24.
- the plug 120 comprises a first plug formation 134, a second plug formation 136 and a shaft 104 which extends between the first plug formation 134 and the second plug formation 136.
- the second plug formation 136 comprises a frusto-conical part 106 and a cylindrical ram 102 and similarly the first plug formation 134 comprises frusto-conical part 108 and a cylindrical guide 103.
- the shaft 104 extends between the ram 102 and the guide 103 of the second plug formation 136 and the first plug formation 134, respectively.
- the outlet opening 28 has a chamfered edge 1 10 at its upper end.
- the frusto-conical parts 106,108 taper towards each other.
- the shaft 104 includes a number of equi-spaced radially-extending fins 1 16 and is star-shaped in cross-section.
- the dispenser 10 includes a collar 1 12 for holding a rubber ring seal 114 against the underside of the floor 26. The ring seal 114 surrounds the outlet opening 28.
- the first plug formation 134 closes off the outlet opening 28 as the frusto-conical part 108 of the first plug formation 134 presses against the rubber seal 1 14.
- the guide 103 is slidably received in the outlet opening 28, keeping the plug 120 upright and the ram 102 of the second plug formation 136 in register with the outlet opening 28.
- the gap between the shaft 104 and the wall defining the outlet opening 28 is charged with dosing liquid 24.
- the plug 120 As the plug 120 is displaced downwardly from the first closed condition of the valve to its second closed condition of the valve, dosing liquid in the outlet opening 28 is forced into the cistern 22 by the cylindrical section 102 which pushes through the outlet opening 108.
- the cylindrical section 102 is guided into the outlet opening 28 by the chamfered edge 1 10 of the outlet opening 28 and by the guide 103 of the first plug formation 134.
- the frusto-conical part 106 seats in the chamfer 1 10 of the outlet opening 28, closing off the outlet opening 28 and the ram 102 is slidably received in the outlet opening 28.
- the plug 120 acts as a rudimentary pump to force dosing liquid through the outlet opening 28.
- the pump action of the plug 120 is especially beneficial when the dosing liquid 24 is particularly thick or has clogged the outlet opening 28 after a long period of non-use.
Abstract
A dispenser (10) comprises a container (12), a weighted base (14), four support members (16) and a valve comprising a float (18) and a plug (20). An outlet opening is defined centrally in the floor (26) of the container, through which a dosing liquid in the container can be discharged into a cistern. When the water in the cistern is above a predetermined upper water level the float (18) keeps the plug (20) lodged in the outlet opening, thereby closing off the outlet opening. When the water in the cistern falls below the upper water level but is still above a predetermined lower water level (as the toilet is being flushed) the float (18) drops and the plug (20) is dislodged from the outlet opening allowing dosing liquid to be discharged into the cistern. As the cistern empties, the float (18) drops and the plug (20) becomes lodged in the outlet opening again, thus closing off the outlet opening.
Description
A DISPENSER FOR DISPENSING A DOSING LIQUID INTO A TOILET CISTERN
FIELD OF INVENTION
This invention relates to a dispenser which can be located in a toilet cistern for dispensing a dosing liquid into the cistern.
SUMMARY OF INVENTION
According to the invention there is provided a dispenser which can be located in a toilet cistern for dispensing a dosing liquid into the toilet cistern, the dispenser including:
a refillable container for holding the dosing liquid, the container having an outlet opening through which the dosing liquid can be discharged into the toilet cistern;
support means for supporting the container at an elevated position in the cistern; and
a valve which includes a valve member which is displaceable between a closed condition for closing off the outlet opening to prevent dosing liquid from being discharged from the container into the cistern and an open condition which allows the dosing liquid to be discharged into the cistern, and a float that is operable to displace the valve member into its closed condition when the water level in the cistern is at a predetermined control level and into its open condition when the water in the cistern is below said control level.
The valve member may be configured to be displaceable between said closed and open conditions and a second closed condition when the water level is at a predetermined second control level, which is below the first control level.
The valve member may be in the form of a plug having a first plug formation and a second plug formation and a connecting portion connecting and extending between the first and second plug formations, the connecting portion being sufficiently narrow to be received in the outlet opening of the container in a configuration wherein the first plug formation closes off the outlet opening from an underside of the outlet opening in said closed condition of the valve member and the second plug formation closes off the outlet opening from an upper side of the outlet opening in the second closed condition of the valve member.
The second plug formation may include a ram formation which is receivable in the outlet opening to push dosing liquid through the outlet opening and into the toilet cistern as the plug is displaced from the closed condition of the valve member to the second closed condition of the valve member.
The outlet opening may be dimensioned and configured to allow the dosing liquid to be discharged from the container at a predetermined flow rate when the outlet opening is open.
The support means may include a weighted base that is spaced from and disposed operatively below the container, the base being locatable on the bottom of the cistern and includes support members which extend between the base and the container.
The support members may be operable to guide the float as it rises and falls with the level of the water in the cistern.
BRIEF DESCRIPTION OF THE DRAWINGS
Further features of the invention are described hereinafter by way of a non- limiting example of the invention, with reference to and as illustrated in the accompanying diagrammatic drawings. In the drawings:
Figure 1 shows a schematic perspective view of a dispenser in accordance with the invention;
Figure 2 shows a schematic perspective view of the valve of the dispenser of Figure 1 ;
Figure 3 shows a schematic perspective view of the refillable container and support means of the dispenser of Figure 1 ;
Figure 4 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the first closed condition;
Figure 5 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the open condition;
Figure 6 shows a schematic sectional side view of the dispenser of Figure 1 located within a cistern, in use, with the valve member of the dispenser in the second closed condition;
Figure 7 shows a schematic sectional side view of another embodiment of a valve member of a dispenser in accordance with the invention, with the valve member in the first closed condition;
Figure 8 shows a schematic sectional side view of the valve member of Figure 7, with the valve member in the second closed condition; and
Figure 9 shows a cross-sectional view of the shaft of the valve member of Figure 8, sectioned along section line IX-IX.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to Figures 1 to 6 the drawings, a dispenser in accordance with the invention is designated generally by reference numeral 10. The dispenser 10 comprises a container 12, support means in the form of a base 14 and four support members 16; and a valve comprising a float 18 and a valve member comprising a plug 20 disposed at an upper end of the float 18. In use, the dispenser 10 is located in a cistern 22 to dispense a dosing liquid 24 such as a sanitary liquid and/or deodorizing liquid that is held in the container 12, into the cistern 22.
The container 12 is generally cylindrical and is open-topped to allow refilling. The container 12 defines an operative horizontal floor 26 at the lower end thereof. An outlet opening 28 is defined centrally in the floor 26, through which the dosing liquid can be discharged into the cistern 22. The outlet opening 28 is dimensioned and configured to allow the dosing liquid 24 to be discharged from the container 12 at a predetermined flow rate when the outlet opening 28 is open.
The base 14 is weighted and rests on the bottom of the cistern 22, in use.
The support members 16 extend upwardly from the base 14.
The support members 16 support the container 12 at an elevated position above the bottom of the cistern 22. The container is supported above the high water level 46 (the water level to which the cistern is filled before the toilet is flushed) of the water 40 in the cistern 22.
The float 18 is of moulded plasties material and has a generally cylindrical section 30 and a two-part frusto-conical section 32. The float 18 fits between the support members 16, which guide the float 18.
The plug 20 is secured to an upper end of the float 18. The plug 20 defines a first frusto-conical plug formation 34, a second frusto-conical plug formation 36 and a shaft 38 extending between the plug formations 34,36. The shaft is 38 received in the outlet opening 28 with the first plug formation 34 located below the floor 26 and the second plug formation 36 located above the floor 26. The first plug formation 34 and second plug formation 36 both taper towards the shaft 38, with the widest part of each plug formation being wider than the outlet opening 28 and the narrowest part of each plug formation being narrower than the outlet opening 28.
In use, the dispenser 10 is adapted to dispense the dosing liquid 24 into the water 40 in the cistern 22 as water is flushed from the cistern 22 into a toilet bowl. When the water 40 in the cistern 22 is above a predetermined upper water level 42 (for example at the high water level 46 of the water in the cistern prior to the toilet being flushed, as shown in Figure 4 of the drawings) the float 18 keeps the first plug formation 34 lodged in the outlet opening 28 of the container 12, thereby closing off the outlet opening 28 in a first closed condition of the valve. In the first closed condition of the valve, dosing liquid 24 is thus prevented from being discharged from the container 12 into the cistern 22. When the water 40 in the cistern falls below the upper water level 42 but is still above a predetermined lower water level 44 (as the toilet is being flushed, as shown in Figure 4 of the drawings) the float 18 drops with the water level and the plug 20 is dislodged and the first stop formation 34 becomes spaced from the outlet opening 28 in an open condition of the plug 20. In the open condition of the plug 20, dosing liquid 24 is discharged into the cistern 22 through the outlet opening 28 in the container 12. As the cistern 22 empties causing the float 18 to drop the second plug formation 36 becomes lodged in the outlet opening 28 when the water level in the cistern reaches the predetermined lower water level 44, thus closing off the outlet opening 28 in a second closed condition of the valve. In the second closed
condition of the valve, dosing liquid 24 is thus prevented from being discharged from the container 12 into the cistern 22.
It will be appreciated that during a flush cycle of the toilet, the outlet opening 28 is open only for the time period when the water 40 in the cistern 22 is between the upper and lower water levels 42, 44 (i.e. between the first and second closed conditions of the valve). The volume of dosing liquid 24 which is discharged into the cistern 22 can thus be controlled by, for example, varying the length of the shaft between the plug formations of the plug and/or varying the flow rate of the dosing liquid 24 by, for example, varying the size of the outlet opening 28 or varying the viscosity of the dosing liquid 24.
With reference to Figures 7 to 9 of the drawings, another embodiment of the plug 20 is indicated generally by reference numeral 120. The plug 120 comprises a first plug formation 134, a second plug formation 136 and a shaft 104 which extends between the first plug formation 134 and the second plug formation 136. The second plug formation 136 comprises a frusto-conical part 106 and a cylindrical ram 102 and similarly the first plug formation 134 comprises frusto-conical part 108 and a cylindrical guide 103. The shaft 104 extends between the ram 102 and the guide 103 of the second plug formation 136 and the first plug formation 134, respectively. The outlet opening 28 has a chamfered edge 1 10 at its upper end. The frusto-conical parts 106,108 taper towards each other. The shaft 104 includes a number of equi-spaced radially-extending fins 1 16 and is star-shaped in cross-section. The dispenser 10 includes a collar 1 12 for holding a rubber ring seal 114 against the underside of the floor 26. The ring seal 114 surrounds the outlet opening 28.
In use, when the valve is in its first closed condition (as shown in Figure 7 of the drawings), the first plug formation 134 closes off the outlet opening 28 as the frusto-conical part 108 of the first plug formation 134 presses against the rubber seal 1 14. In the first closed condition, the guide 103 is slidably received in the outlet opening 28, keeping the plug 120 upright and the ram 102 of the second plug formation 136 in register with the outlet opening 28. In the first closed condition of the valve, the gap between the shaft 104 and the
wall defining the outlet opening 28 is charged with dosing liquid 24. As the plug 120 is displaced downwardly from the first closed condition of the valve to its second closed condition of the valve, dosing liquid in the outlet opening 28 is forced into the cistern 22 by the cylindrical section 102 which pushes through the outlet opening 108. The cylindrical section 102 is guided into the outlet opening 28 by the chamfered edge 1 10 of the outlet opening 28 and by the guide 103 of the first plug formation 134. In the second closed condition of the valve, the frusto-conical part 106 seats in the chamfer 1 10 of the outlet opening 28, closing off the outlet opening 28 and the ram 102 is slidably received in the outlet opening 28. It must be appreciated that the plug 120 acts as a rudimentary pump to force dosing liquid through the outlet opening 28. The pump action of the plug 120 is especially beneficial when the dosing liquid 24 is particularly thick or has clogged the outlet opening 28 after a long period of non-use.
Claims
1. A dispenser which can be located in a toilet cistern for dispensing a dosing liquid into the toilet cistern, the dispenser including:
a refillable container for holding the dosing liquid, the container having an outlet opening through which the dosing liquid can be discharged into the toilet cistern;
support means for supporting the container at an elevated position in the cistern; and
a valve which includes a valve member which is displaceable between a closed condition for closing off the outlet opening to prevent dosing liquid from being discharged from the container into the cistern and an open condition which allows the dosing liquid to be discharged into the cistern, and a float that is operable to displace the valve member into its closed condition when the water level in the cistern is at a predetermined control level and into its open condition when the water in the cistern is below said control level.
2. The dispenser as claimed in claim 1 , wherein the valve member is configured to be displaceable between said closed and open conditions and a second closed condition when the water level is at a predetermined second control level, which is below the first control level.
3. The dispenser as claimed in claim 2, wherein the valve member is in the form of a plug having a first plug formation and a second plug formation and a connecting portion connecting and extending between the first and second plug formations, the connecting portion being sufficiently narrow to be received in the outlet opening of the container in a configuration wherein the first plug formation closes off the outlet opening from an underside of the outlet opening in said closed condition of the valve member and the second plug formation closes off the outlet opening from an upper side of the outlet opening in the second closed condition of the valve member.
4. The dispenser as claimed in claim 3, wherein the second plug formation includes a ram formation which is receivable in the outlet opening to push dosing liquid through the outlet opening and into the toilet cistern as the plug is displaced from the closed condition of the valve member to the second closed condition of the valve member.
5. The dispenser as claimed in any one of claims 1 to 4, wherein the outlet opening is dimensioned and configured to allow the dosing liquid to be discharged from the container at a predetermined flow rate when the outlet opening is open.
6. The dispenser as claimed in any one of claims 1 to 5, wherein the support means includes a weighted base that is spaced from and disposed operatively below the container, the base being locatable on the bottom of the cistern and includes support members which extend between the base and the container.
7. The dispenser as claimed in any one of claims 1 to 6, wherein the support members are operable to guide the float as it rises and falls with the level of the water in the cistern.
8. The dispenser as claimed in claim 1 , substantially as herein described with reference to and as illustrated in any of the drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200604676 | 2006-06-07 | ||
| ZA2006/04676 | 2006-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2007141704A1 true WO2007141704A1 (en) | 2007-12-13 |
| WO2007141704B1 WO2007141704B1 (en) | 2008-03-20 |
Family
ID=38608909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2007/051999 WO2007141704A1 (en) | 2006-06-07 | 2007-05-28 | A dispenser for dispensing a dosing liquid into a toilet cistern |
Country Status (2)
| Country | Link |
|---|---|
| WO (1) | WO2007141704A1 (en) |
| ZA (1) | ZA200809960B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013157028A1 (en) * | 2012-04-18 | 2013-10-24 | Sauro Tongiani | Static liquid dispenser |
| CN103938698A (en) * | 2013-12-06 | 2014-07-23 | 陈宇 | Vertical type toilet cleaner block barrel |
| CN106136892A (en) * | 2016-08-05 | 2016-11-23 | 雷东玉 | Tower healthy drinking machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999008076A1 (en) * | 1997-08-07 | 1999-02-18 | Hennessey, Alan, John | Fluid dispensing device |
| US6212692B1 (en) * | 2000-02-29 | 2001-04-10 | Chao-Yun Hu | Automatic quantitative regulator for dissolvent in water tank |
-
2007
- 2007-05-28 WO PCT/IB2007/051999 patent/WO2007141704A1/en active Application Filing
-
2008
- 2008-11-24 ZA ZA200809960A patent/ZA200809960B/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999008076A1 (en) * | 1997-08-07 | 1999-02-18 | Hennessey, Alan, John | Fluid dispensing device |
| US6212692B1 (en) * | 2000-02-29 | 2001-04-10 | Chao-Yun Hu | Automatic quantitative regulator for dissolvent in water tank |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013157028A1 (en) * | 2012-04-18 | 2013-10-24 | Sauro Tongiani | Static liquid dispenser |
| CN103938698A (en) * | 2013-12-06 | 2014-07-23 | 陈宇 | Vertical type toilet cleaner block barrel |
| CN106136892A (en) * | 2016-08-05 | 2016-11-23 | 雷东玉 | Tower healthy drinking machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200809960B (en) | 2009-11-25 |
| WO2007141704B1 (en) | 2008-03-20 |
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