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WO1996006990A1 - Chasse d'eau a siphon - Google Patents

Chasse d'eau a siphon Download PDF

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Publication number
WO1996006990A1
WO1996006990A1 PCT/IE1995/000044 IE9500044W WO9606990A1 WO 1996006990 A1 WO1996006990 A1 WO 1996006990A1 IE 9500044 W IE9500044 W IE 9500044W WO 9606990 A1 WO9606990 A1 WO 9606990A1
Authority
WO
WIPO (PCT)
Prior art keywords
siphon
channel
liquid
pilot
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IE1995/000044
Other languages
English (en)
Inventor
Colm James Costello
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EPIDO DEVELOPMENTS Ltd
Original Assignee
EPIDO DEVELOPMENTS Ltd
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
Application filed by EPIDO DEVELOPMENTS Ltd filed Critical EPIDO DEVELOPMENTS Ltd
Publication of WO1996006990A1 publication Critical patent/WO1996006990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • E03D1/06—Cisterns with tube siphons
    • E03D1/12—Siphon action initiated by outlet of air
    • E03D1/125—Siphon action initiated by outlet of air in cisterns with tube siphons
    • 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
    • E03D1/06—Cisterns with tube siphons
    • E03D1/08—Siphon action initiated by air or water pressure
    • 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
    • E03D1/06—Cisterns with tube siphons
    • E03D1/10—Siphon action initiated by raising the water level in the cistern, e.g. by means of displacement members

Definitions

  • the present invention relates to siphon flush devices and more particularly to toilet/urinal flushing siphon devices.
  • Known toilet flush mechanisms for emptying water from the cistern of a flush toilet comprise either a siphon flush mechanism or a plug mechanism.
  • the outlet from the cistern is sealed with a plug.
  • the mechanism is operated by raising the plug allowing the water in the cistern to flow through the outlet and the cistern is thereby emptied.
  • a disadvantage associated with plug flush mechanisms is that any damage or wear to the rubber seal between the plug and the cistern outlet results in a continuous leakage of water from the cistern.
  • a siphon conduit connects the contents of the cistern with the outlet at the base of the cistern. Flushing is achieved by lifting a volume of water, using a piston and one-way flap valve, to fill the siphon conduit and establish the siphonic action which then results in the cistern being emptied.
  • a disadvantage associated with this siphon mechanism is that a number of parts are required to construct the assembly including a siphon body, piston, one-way valve and return spring. The action of the piston and one way valve membrane can become unreliable after a period of use.
  • GB-A-2205595 discloses a prior art siphon flush device which operates on the basis of a sinuous liquid channel with a pressurised airlock.
  • the airlock connects to a vent channel, the vent channel remaining blocked prior to actuation of the flush by a volume of water in a U-bend in the vent channel.
  • Actuation is achieved by using a pulse of air to create an instability whereby the U-bend is blown clear of water by the pressurised air in the airlock.
  • Such an actuation method is prone to malfunction, as the degree of instability created depends on the nature of the actuation air pulse provided by the user.
  • An insufficient air pulse can cause partial release of air from the pressurised air lock without fully blowing the vent tube clear of water. In such conditions, the device may not adequately flood the outlet pipe with water and may not establish correct siphonic flush conditions.
  • the present invention seeks to alleviate the disadvantages associated with known devices for flushing toilets/urinals.
  • the present invention accordingly provides a siphon flush device comprising a main liquid channel having an inlet and an outlet, the main channel including a network of interconnected channels or liquid paths leading from the inlet to the outlet for flow of liquid from a cistern therethrough, the main channel having a geometry which is adapted for the creation therein of a pressurised air lock preventing flow in the liquid path between the inlet and outlet, a vent channel for connecting the pressurised air lock to a zone of lower or ambient pressure, and a means of charging part of the vent channel with liquid to prevent release of the pressurised air lock, characterised in that the device includes a pilot siphon channel communicating with the vent channel and means for raising the liquid level in the pilot channel, so that in use, a rise of liquid level in the pilot siphon channel to a predetermined threshold results in siphonic liquid flow from the pilot siphon channel to a zone of lower or ambient pressure which results in discharge of liquid from the vent channel which subsequently results in release of air from the pressurised air lock and results in liquid flow from the in
  • An advantage of the device in accordance with the present invention is that it has fewer parts, has greater reliability and can be produced at a lower manufacturing cost than known siphon type mechanisms. Versions of the flush toilet device in accordance with the present invention are available for automatic flushing of urinals and for manual flushing of WC's. The manual flush version has the added advantage of requiring less actuation force than known mechanisms and can be manufactured as a single flush or dual flush version.
  • Figure 1 is a plan view of a first embodiment of siphon device (omitting the actuation means shown in Figures 2, 3 and 4);
  • Figure 2 is a cross sectional side elevation of the first embodiment with the cistern full;
  • Figure 3 is a cross sectional side elevation of the first embodiment showing the actuation of the pilot siphon
  • Figure 4 is a similar view to Figures 2 and 3 showing a flush commencing
  • Figure 5 is a cross-sectional side view of a second embodiment of siphon device which is mounted in a separate cistern;
  • Figure 6 is a cross-sectional side view of a third embodiment of siphon device which is also mounted in a separate cistern;
  • Figure 7a and 7b are sectional views of an alternative embodiment of actuator means for actuating the flush in the siphon device;
  • Figure 8 is a cross-sectional elevation of a fourth embodiment of siphon device;
  • Figure 9 is a cross-sectional elevation of a fifth embodiment of siphon device.
  • Figure 10 is a plan view of a sixth embodiment of siphon device.
  • Figure 11 is a cross-sectional side view of the sixth embodiment.
  • the device of the first embodiment is for manually operated flushing of toilets.
  • the device comprises a body having a labyrinthine network of chambers and channels including a main siphon channel 2, a vent channel 11, a vent channel inlet 5, a pilot siphon channel 8, a region 6, a bleed hole 7 to connect the region 6 to the cistern 10 and an inlet valve 35.
  • the main siphon channel 2 comprises four approximately vertical channel portions 15 joined by three approximate 180° bends 16.
  • the bends may be in a nested configuration as shown in Figure 1 or alternatively may be in an open configuration as indicated in the third embodiment shown in Figure 5.
  • the main siphon channel 2 includes an inlet 3 and an outlet 4, both of which are downwardly facing.
  • the vent channel inlet 5 connects the main channel 2 to the region 6.
  • the outlet 14 from the pilot siphon channel 8 allows the region 6 to empty when the water level in the pilot channel 8 reaches the top of the inverted U-bend 9.
  • the vent channel 11 links the vent channel inlet 5 to the outlet 4 from the main siphon channel 2 allowing air to flow through the outlet 4 when the water flow from the pilot siphon channel 8 causes the water level to lower sufficiently in the vent channel (11).
  • the small bleed hole 7 in the blow moulded body provides liquid communication through a tortuous passage 25.
  • the tortuous passage 25 slows the flow rate into the chamber 6 from the cistern 10.
  • a buffer chamber 20 is located between an air pulse mechanism 21 and region 6.
  • a small breather channel 23 connects the chamber 20 to the vent channel 11 and a conduit 22 connects the chamber 20 to the region 6.
  • a float operated relief valve 60 is mounted at the top of the cistern 10 and is activated in the event of overfilling of the cistern 10 by a faulty inlet valve 35 so as to disable the actuator 21 by opening an orifice in the actuator tube.
  • a half flush is achieved by allowing air to enter and break the siphon action via venting pipe outlet 40 when the cistern is approximately half empty.
  • a full flush can be achieved by blocking the venting pipe inlet 41 with the actuator 21.
  • the device of the second embodiment is for automatic flushing of urinals.
  • the device comprises a body having a labyrinthine network of chambers and channels including a main siphon channel 102, a vent channel inlet 105, a pilot siphon channel 108, a region 106, a vent channel 111 and a bleed hole 107 to connect the region 106 to the cistern 110.
  • the main siphon channel 102 comprises four approximately vertical channel portions 115 joined by three 180° bends 116.
  • the bends may be in the nested configuration shown or in an open configuration as indicated in the third embodiment shown in Figure 6.
  • the main siphon channel 102 includes an inlet 103 and an outlet 104, both of which are downwardly facing.
  • the vent channel inlet 105 connects the main channel 102 to the region 106.
  • the outlet 114 from the pilot siphon channel 108 allows the region 106 to empty when the water level in the pilot channel 108 reaches the top of the inverted U-bend 109.
  • the vent channel 111 links the vent channel inlet 105 to the outlet 104 from the main siphon channel 102 allowing air to flow through the outlet 104 when the water flow from the pilot siphon channel 108 causes the water level to lower sufficiently in the region 106.
  • the small bleed hole 107 in the blow moulded body provides liquid communication between the region 106 and the cistern 110.
  • the main siphon channel 2 has a tab 151 provided thereon which can be removed so as to provide for different flush levels. The operation of the flush device of the second embodiment will now be described. As the water level rises in the cistern 110, water enters the region 106 through the bleed hole 107.
  • the water level inside the pilot siphon channel 108 When the water level inside the pilot siphon channel 108 reaches the top of the inverted U-bend 109, the water flows rapidly to the pilot siphon channel outlet 114. Water is emptied from the region 106 faster than water can enter through the bleed hole 107. The dropping water level allows the pressurised air in the main channel 102 to be vented to the outlet 104 via the vent channel inlet 105 and vent channel 111. The short column of water in the vent channel 111 is blown through by the expelled air. The water from the cistern 110 then floods the main channel 102 setting up the main siphon action to empty the cistern 110. The cistern stops emptying when air enters the main siphon channel 2 and breaks the siphonic action.
  • a third embodiment of the siphon device is shown in Figures 6 and 7 and this third embodiment provides a manual flush version of the device.
  • the device of this embodiment comprises a blow moulded body 201 which includes the following channels; a main siphon channel 202, a vent channel inlet 205, a region 206, a pilot siphon channel 208, a vent channel 211, a priming chamber 220, and a small bleed hole 207 for connecting the region 206 to the cistern 210.
  • the main siphon channel 202 comprises four approximately vertical channel portions, joined by three 180° bends 216, with an inlet 203 and an outlet 204 both downwardly facing.
  • the main siphon channel 202 may be in the open configuration as shown or alternatively may have the inverted U-bends in a nested configuration as in the first and second embodiments.
  • the vent channel inlet 205 connects the top of the first bend 216 to the region 206.
  • the pilot siphon channel 208 operates to empty the region 206 when the water level in the pilot siphon channel 208 reaches the top of the inverted U-bend 209.
  • the vent channel 211 has a priming chamber 220 including an actuation plunger 221 at its upper end, linking the vent channel inlet 205 to atmospheric air when the flow of liquid from the pilot siphon channel 208 causes the water level to lower sufficiently in the region 206.
  • the small bleed hole 207 in the blow moulded body connects the region 206 to the cistern 210.
  • the device When the water level in the cistern 210 rises to its target level, the device is ready to be activated.
  • the actuation plunger 221 is then depressed causing the water level in the priming chamber 220, in the vent channel inlet 205 and in the pilot siphon channel 208 to be raised.
  • a siphon action commences in the pilot siphon channel 208 which causes the region 206 to be emptied faster than water can re-enter through the bleed hole 207.
  • the pressurised air in the main siphon channel 202 exits through the vent channel inlet 205 and the vent channel 211, pushing any water in the vent channel 211 into the base of the priming chamber 220.
  • the direction of air flow is shown by the direction of the arrows indicated in Figure 6.
  • the main siphon channel 202 then floods and the cistern 210 empties until air enters the main siphon channel inlet 203 to break the siphonic action.
  • an actuation pulse channel 429 joins the pilot siphon 408 below the level of the bend 409.
  • a pulse of air is provided by a push button or similar device and passes through the air pulse tube 430 and actuation pulse channel 429 so that a volume of air is injected into the pilot channel 408, thus forcing water in the pilot channel 408 over the bend 409 and setting up the pilot siphon action.
  • the sixth embodiment device 501 for use with automatic flushing of urinals is shown in Figures 10 and 11. It has a main siphon channel 502, vent channel inlet 505, a pilot siphon channel 508, a region 506, vent channel 511 and a bleed aperture 507 to connect the region to the cistern 510.
  • the main additional feature of the device 501 is a bypass channel 551 and bypass chamber 552 located between the vent channel 511 and the cistern 510.
  • the chamber 552 is charged with a volume of water prior to flushing.
  • the bypass channel 511 can vent air from an external conduit such as a sparge pipe by displacing water from the chamber 552 during the flush cycle.
  • the devices of the embodiments do not require close fitting moving parts and are not subject to wear or leaks.
  • the body of the devices can be produced cheaply and simply in a single piece using blow moulding technology.
  • Figure 8 shows an automatic flush version in which the region 305 is connected with a bleed channel 325 from the U-bend of the main siphon channel 302 instead of using a bleed hole to the water in the cistern. The principle of operation is not affected, except that the top of the pilot siphon channel bend 309 is at a lower level.
  • Vent channel cross section Variations in the vent channel cross section are desirable which ensure that the column of water in this channel blows away when the water level in the region reaches the bottom of this channel.
  • the cross section may increase as the column of water travels upwards, thus shortening the column and reducing the air pressure required to blow it away.
  • the vent channel may vent to the air space above the cistern water level instead of to the outlet.
  • the outlet portion of the vent channel may be omitted and the pressurised air allowed to vent instead through the pilot siphon channel once the water in the region has emptied.
  • actuators 7(a) and 7(b) Various types of actuator may be used for the manual version shown in Figure 6.
  • the actuator consists of a vessel 230, which when raised quickly from the position shown in Figure 7(a) to that shown in Figure 7(b), empties its contents into the priming chamber 231 to set off the pilot siphon.

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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)

Abstract

Une chasse d'eau à siphon (5) comprend un conduit d'eau principal (2), doté d'une entrée (3) et d'une sortie (4), qui présente un réseau de segments successifs (15, 16) raccordés les uns aux autres, menant de cette entrée (3) à cette sortie (4) pour permettre le passage de l'eau provenant d'un réservoir (10). Ce conduit d'eau principal (2) présente une géométrie permettant d'y créer une poche interne d'air sous pression prévenant l'écoulement d'eau dans les segments situés entre l'entrée (3) et la sortie (4). Une conduite à évent (11) relie cette poche d'air sous pression à une zone de pression inférieure ou ambiante et une partie de cette conduite (11) peut recevoir de l'eau pour éviter la fuite de cette poche d'air. Cette chasse d'eau comprend un conduit de siphon pilote (8), qui communique avec la conduite à évent (11), et un actuateur (20, 21) qui élève le niveau d'eau dans ce conduit pilote (8) pour que, pendant l'utilisation, l'élévation du niveau d'eau dans ce conduit pilote (8) jusqu'à un seuil déterminé produise l'écoulement de l'eau du siphon depuis le conduit de siphon pilote jusqu'à une zone de pression inférieure ou ambiante qui entraîne la décharge de l'eau hors de la conduite à évent (11), d'où une libération de l'air de la poche d'air sous pression, puis l'écoulement de l'eau entre l'entrée (3) et la sortie (4) de cette chasse d'eau.
PCT/IE1995/000044 1994-09-01 1995-09-01 Chasse d'eau a siphon Ceased WO1996006990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IES940680 1994-09-01
IE940680 1994-09-01

Publications (1)

Publication Number Publication Date
WO1996006990A1 true WO1996006990A1 (fr) 1996-03-07

Family

ID=11040489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE1995/000044 Ceased WO1996006990A1 (fr) 1994-09-01 1995-09-01 Chasse d'eau a siphon

Country Status (1)

Country Link
WO (1) WO1996006990A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640515A1 (fr) 2004-09-27 2006-03-29 MEPA- Pauli und Menden GmbH Réservoir de chasse d'eau avec injecteur d'air, et utilisation d'un tel réservoir
DE102004046722A1 (de) * 2004-09-27 2006-04-06 Mepa - Pauli Und Menden Gmbh Spülsystem mit Lufteinleitung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284849C (fr) *
US1604759A (en) * 1925-11-17 1926-10-26 Harold B Richards Siphon
FR812145A (fr) * 1935-09-06 1937-04-30 Procédé et dispositif de commande des siphons de décharge de réservoirs pour liquides, spécialement de la chasse d'eau des cabinets d'aisance
DE651229C (de) * 1933-08-30 1937-10-11 Ruggero Niccolai Einrichtung zum Entleeren von sich selbsttaetig wieder fuellenden Fluessigkeitsbehaeltern
GB618980A (en) * 1946-11-15 1949-03-02 Eric Bayly Improvements in syphonic flushing apparatus
DE888978C (de) * 1949-04-21 1953-09-07 Ruggero Niccolai Vorrichtung zum Entleeren von sich selbsttaetig wieder fuellenden Fluessigkeitsbehaeltern mit Fluessigkeitsverschluss, insbesondere von Abortspuelkaesten
GB920981A (en) * 1960-12-28 1963-03-13 Shanks & Company Ltd Improvements in or relating to the siphons of siphonic flushing cisterns
CH446213A (fr) * 1966-03-11 1967-10-31 Claimcom Patents Limited Dispositif pour vidanger le liquide d'un réservoir
GB1590633A (en) * 1977-12-20 1981-06-03 Nat Res Dev Water closet flushing apparatus
GB2276640A (en) * 1993-03-30 1994-10-05 Alan David Somerfield W.C. cistern

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284849C (fr) *
US1604759A (en) * 1925-11-17 1926-10-26 Harold B Richards Siphon
DE651229C (de) * 1933-08-30 1937-10-11 Ruggero Niccolai Einrichtung zum Entleeren von sich selbsttaetig wieder fuellenden Fluessigkeitsbehaeltern
FR812145A (fr) * 1935-09-06 1937-04-30 Procédé et dispositif de commande des siphons de décharge de réservoirs pour liquides, spécialement de la chasse d'eau des cabinets d'aisance
GB618980A (en) * 1946-11-15 1949-03-02 Eric Bayly Improvements in syphonic flushing apparatus
DE888978C (de) * 1949-04-21 1953-09-07 Ruggero Niccolai Vorrichtung zum Entleeren von sich selbsttaetig wieder fuellenden Fluessigkeitsbehaeltern mit Fluessigkeitsverschluss, insbesondere von Abortspuelkaesten
GB920981A (en) * 1960-12-28 1963-03-13 Shanks & Company Ltd Improvements in or relating to the siphons of siphonic flushing cisterns
CH446213A (fr) * 1966-03-11 1967-10-31 Claimcom Patents Limited Dispositif pour vidanger le liquide d'un réservoir
GB1590633A (en) * 1977-12-20 1981-06-03 Nat Res Dev Water closet flushing apparatus
GB2276640A (en) * 1993-03-30 1994-10-05 Alan David Somerfield W.C. cistern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640515A1 (fr) 2004-09-27 2006-03-29 MEPA- Pauli und Menden GmbH Réservoir de chasse d'eau avec injecteur d'air, et utilisation d'un tel réservoir
EP1640516A2 (fr) 2004-09-27 2006-03-29 MEPA- Pauli und Menden GmbH Réservoir de chasse d'eau à deux volumes et son utilisation
DE102004046722A1 (de) * 2004-09-27 2006-04-06 Mepa - Pauli Und Menden Gmbh Spülsystem mit Lufteinleitung

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