WO1992001842A1 - Improvements in and relating to water closet cisterns - Google Patents
Improvements in and relating to water closet cisterns Download PDFInfo
- Publication number
- WO1992001842A1 WO1992001842A1 PCT/EP1991/001374 EP9101374W WO9201842A1 WO 1992001842 A1 WO1992001842 A1 WO 1992001842A1 EP 9101374 W EP9101374 W EP 9101374W WO 9201842 A1 WO9201842 A1 WO 9201842A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bell
- cistern
- stem
- water
- air
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
- E03D1/02—High-level flushing systems
- E03D1/14—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves
Definitions
- the present invention relates to improvements in and relating to water closet cisterns.
- a bell-like member is employed.
- This member comprises a hollow stem co-axial with the outlet of the cistern and provided with a valve means to close the outlet when the stem is in a lower position. Operation of the control handle or button causes the stem to be displaced upwardly allowing the discharge of water from the cistern. When sufficient water has been discharged the stem sinks under its own weight and closes the valve.
- Various mechanical means have been proposed to cause premature sinking of the bell so as to regulate the quantity of water discharged from the cistern. In general such mechanical means have been complexe and prown to brakedown.
- a hybrid system is disclosed in DE 3410140.
- water flows from the cistern, through a flexible pipe into the upper part of a partially immersed bell. Water ceases to flow when the free end of the pipe is exposed above the water level, causing the syphon to be broken and the bell to sink to its original position.
- the depth of the free end of the pipe is controlled by a rope and pulley mechanism.
- a flush mechanism for a cistern of the type comprising a vertically mounted and movable stem with valve means at the lower end thereof, wherein a bell having an open lower end is fixed co-axially on the stem below the high water level in the cistern and means are provided for the optional introduction of air into the upper part of the bell so as to allow water to drain from the mouth of the bell as the water level in the cistern falls, the arrangement being such that when air is not introduced into the bell, the mass of water retained within the bell is sufficient to displace the stem downwards and cause closure of the valve means prior to discharge of the entire water content of the cistern.
- a fixed bell as a variable weight on the stem, it is possible to ensure that the stem is urged downwards as the water level in the cistern falls below the bell, or optionally when the bell is allowed to drain, to ensure that the complete contents of the cistern is discharged before the stem sinks to its original position.
- a fixed bell has the particular advantage that it cannot fail due to the formation of calcinareous deposits which restrain the sliding action.
- the bell fixed relative to the stem in use but is secured in such a manner that its position may be adjusted on longitudinally of the stem. This enables the quantity of water which will be discharged before the mass of the bell urges the stem downwards to be varied, thereby accommodating variations in the shape and size of cisterns, without requiring the bell to slide during use.
- the means provided for the optional introduction of air into the upper part of the bell comprise a conduit communicating with the ambient and with the upper part of the bell and an externally operable airvalve in the conduit to selectively admit or exclude a flow of air from passing along the conduit and entering the bell.
- the feature of having an externally controllable airvalve located in the conduit is an important feature of a preferred embodiment of the present invention. It is particularly advantageous for said air-valve to be operable without dismantling of the cistern, as the apparatus may then be switched from low flush to full flush mode with ease.
- the air-valve is contructed to fail in an open position.
- the blow valve comprises an open pore in the upper part of the bell and a water trap above the pore. It is envisaged that ballvalves and other valve means may be employed as a blow valve.
- air is discharged from the bell via the conduit.
- the bell is provided with a float attached to an upper portion thereof.
- a float attached to an upper portion thereof. This is useful in maintain a continuous flush/ fill cycle for those applications where users of the water-closet are either incapable of operating or forget to operate the flush mechanism. This is particularly suitable for installation on premises licensed to sell alcoholic beverages. In such an embodiment a small flow of water into the cistern, eventually causes the float to lift the stem and discharge the contents of the cistern.
- a flush mechanism for a cistern (1) of the type comprising a vertically mounted and movable stem (2) with valve means (3) at the lower end thereof, and actuating means (4) at the upper end thereof.
- a bell (5) having an open lower end is fixed co-axially on the stem (2) below the high water level (6) in the cistern (1).
- the bell (5) is mounted adjustably on the stem (2) by means of a snug-fitting collar (7) so as to enable the bell to be moved longitudinally of the stem.
- Valve means (8) are provided for the optional introduction of air into the upper part of the bell (5) through a flexible conduit (9) communicating with the ambient and with the upper part of the bell.
- the air-valve (8) comprises a valve seat (8a), a valve member (8b) and a spring (8c).
- the spring (8c) and the valve member (8b) are so arranged as to form an 'overcentre' locking assembly.
- the valve member is formed with counterweight (8d) such that failure of the spring will cause the valve to fail in open position.
- blow valve (10) comprising an open pore (11) in the upper part of the bell (5) and a water trap (12) above the pore.
- blow valve 10
- the pore can be located in the wall of the conduit (9), preferably close to the valve seat (8a).
- the pore can be located in the valve member (8b).
- the cistern (1) is filled with water to the high water level (6).
- the bell (5) is filled with water and submerged, on operation of the actuating means (4), the stem (2) is displaced towards the top of the figure and water begins to flow through valve means (3) causing the water level in the cistern to fall.
- a relatively large volume of air flows allong the conduit (9) and enters the upper part of the bell. The introduction of air into the upper part of the bell allows the water to drain from the mouth of the bell as the water level in the cistern falls.
- a flush mechanism for a cistern of the type comprising a vertically mounted and movable stem with valve means at the lower end thereof, wherein a bell having an open lower end is fixed co-axially on the stem below the high water level in the cistern and means are provided for the optional introduction of air into the upper part of the bell so as to allow water to drain from the mouth of the bell as the water level in the cistern falls, the arrangement being such that when air is not introduced into the bell, the mass of water retained within the bell is sufficient to displace the stem downwards and cause closure of the valve means prior to discharge of the entire water content of the cistern.
- a flush mechanism according to claim 1, wherein the means provided for the optional introduction of air into the upper part of the bell comprise a conduit communicating with the ambient and with the upper part of the bell and an air-valve in the conduit to selectively admit or exclude a flow of air from passing along the conduit and entering the bell.
- blow-valve comprises an open pore in the upper part of the bell and a water trap above the pore.
- a flush mechanism for a cistern of the type comprising a vertically mounted and movable stem with watervalve means at the lower end thereof, wherein a bell having an open lower end is fixed co-axially on the stem below the high water level in the cistern and a flexible conduit comprising externally operable air-valve means
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP90201985.0 | 1990-07-19 | ||
EP90201985 | 1990-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992001842A1 true WO1992001842A1 (en) | 1992-02-06 |
Family
ID=8205081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1991/001374 WO1992001842A1 (en) | 1990-07-19 | 1991-07-19 | Improvements in and relating to water closet cisterns |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0539483A1 (en) |
AU (1) | AU8232891A (en) |
WO (1) | WO1992001842A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU646082B3 (en) * | 1993-10-08 | 1994-02-03 | Stella Tapalaga-Rosenberger | Water economy through an adaptor in time-independent toilet systems |
US6092603A (en) * | 1996-01-29 | 2000-07-25 | Petroleo Brasileiro S.A. - Petrobras | Method and equipment for the flow of offshore oil production with primary gas separation |
EP0955417B1 (en) * | 1998-05-06 | 2003-11-19 | Aliaxis Participations | Flushing device for a toilet flushing cistern |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE575244C (en) * | 1931-10-11 | 1933-04-26 | Friedrich Patten | Suction siphon bell with flush duration control through air admission |
GB453683A (en) * | 1935-11-28 | 1936-09-16 | Folmer Agerholm | Improvements in and relating to flushing tanks |
DE2635440A1 (en) * | 1976-08-06 | 1978-02-09 | Hans W Rohrwasser | Toilet flushing cistern with metered outlet - has lever system and valve for partial or full draining |
US4135263A (en) * | 1977-09-16 | 1979-01-23 | Anderson John K | Dual flush toilet mechanism |
-
1991
- 1991-07-19 EP EP19910913603 patent/EP0539483A1/en not_active Withdrawn
- 1991-07-19 WO PCT/EP1991/001374 patent/WO1992001842A1/en not_active Application Discontinuation
- 1991-07-19 AU AU82328/91A patent/AU8232891A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE575244C (en) * | 1931-10-11 | 1933-04-26 | Friedrich Patten | Suction siphon bell with flush duration control through air admission |
GB453683A (en) * | 1935-11-28 | 1936-09-16 | Folmer Agerholm | Improvements in and relating to flushing tanks |
DE2635440A1 (en) * | 1976-08-06 | 1978-02-09 | Hans W Rohrwasser | Toilet flushing cistern with metered outlet - has lever system and valve for partial or full draining |
US4135263A (en) * | 1977-09-16 | 1979-01-23 | Anderson John K | Dual flush toilet mechanism |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU646082B3 (en) * | 1993-10-08 | 1994-02-03 | Stella Tapalaga-Rosenberger | Water economy through an adaptor in time-independent toilet systems |
US6092603A (en) * | 1996-01-29 | 2000-07-25 | Petroleo Brasileiro S.A. - Petrobras | Method and equipment for the flow of offshore oil production with primary gas separation |
EP0955417B1 (en) * | 1998-05-06 | 2003-11-19 | Aliaxis Participations | Flushing device for a toilet flushing cistern |
Also Published As
Publication number | Publication date |
---|---|
AU8232891A (en) | 1992-02-18 |
EP0539483A1 (en) | 1993-05-05 |
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