WO2021077161A1 - Siphon connecteur - Google Patents

Siphon connecteur Download PDF

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Publication number
WO2021077161A1
WO2021077161A1 PCT/AU2020/051132 AU2020051132W WO2021077161A1 WO 2021077161 A1 WO2021077161 A1 WO 2021077161A1 AU 2020051132 W AU2020051132 W AU 2020051132W WO 2021077161 A1 WO2021077161 A1 WO 2021077161A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
overflow pipe
outlet
tank
inlet
Prior art date
Application number
PCT/AU2020/051132
Other languages
English (en)
Inventor
Geoffrey Charles Quick
Wes QUICK
Original Assignee
Geoffrey Charles Quick
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2019903977A external-priority patent/AU2019903977A0/en
Application filed by Geoffrey Charles Quick filed Critical Geoffrey Charles Quick
Publication of WO2021077161A1 publication Critical patent/WO2021077161A1/fr

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
    • E03D9/04—Special arrangement or operation of ventilating devices
    • E03D9/05—Special arrangement or operation of ventilating devices ventilating the bowl
    • E03D9/052—Special arrangement or operation of ventilating devices ventilating the bowl using incorporated fans

Definitions

  • the present invention relates to a chamber for an odour extraction device in toilet cisterns.
  • the invention has primarily been developed for use in toilets in fixed homes and will be described hereinafter with reference to this application. However, the invention is not limited to this particular use and is also applicable for use with toilets in other environments such as marine vessels; mobile homes; campervans; recreational vehicles; caravans; portable buildings and portable toilets.
  • the Applicant’s international PCT patent application Nos PCT/AU2007/000003 (WO 2007/079/079524) and PCT/AU2018/000006 (WO 2018/140998) disclose embodiments of an odour extraction device for gravity flushing and siphonic flushing toilet pans.
  • the disclosed odour extraction devices include a one-way valve to prevent unpleasant odours from flowing from the sewer back to the toilet pan.
  • the disclosed odour extraction devices utilise a suction fan to draw gas from within the pan and expel it through a duct into the pan’s flushing outlet pipe. The gas then flows through the pan’s flushing outlet pipe into the sewer.
  • the performance of the disclosed odour extraction device can vary depending on the installation. Further, the installer is required to adequately seal all gaps in the toilet cistern, which is difficult, particularly with in-wall toilet cisterns. Atmospheric leaks from the flush buttons, water inlet valves and the join between the cistern lid and cistern cause inefficiencies in the odour extraction devices, meaning that devices must operate at a higher speed to achieve the desired odour extraction effect, which draws more electric power and is loud for the operator. In some cases, the air leakage prevents the toilet from being odourless, despite having a high- powered fan. Therefore, it would be desirable to maximise air flow from the odour extraction device through the toilet overflow pipe. It is an object of the present invention to provide a chamber that mitigates at least one of the above disadvantages. Summary of Invention
  • An aspect of the present invention provides a toilet cistern to be used with a toilet pan, the cistern including: a tank to hold water; an overflow pipe in fluid communication with the tank and the toilet pan; a chamber member surrounding at least a portion of the overflow pipe, the chamber member having a chamber body defining a cavity and an inlet and an outlet, the inlet being in fluid communication with the overflow pipe; and a fan assembly located within the tank, the fan assembly having a fan body with an inlet and an outlet, said fan assembly inlet being in fluid communication with the fan body outlet so that gas from the toilet pan is drawn through the overflow pipe, into the chamber and fan assembly, and expelled from the outlet of the fan assembly.
  • the overflow pipe has first and second openings, the first opening of the overflow pipe being in fluid communication with the toilet pan, and the second opening of the overflow pipe being in fluid communication with the tank.
  • the chamber outlet is sealingly engaged with the fan assembly inlet.
  • the chamber body has at least one aperture to allow airflow into the chamber from the tank.
  • the at least one aperture is sized to allow a first airflow into the chamber and the second opening of the overflow pipe is sized to allow a second airflow into the chamber and wherein the first airflow is less than the second airflow.
  • the chamber member outlet is substantially annular.
  • the chamber member outlet is rectangular.
  • the at least one aperture includes a plurality of apertures spaced apart to at least partially circumscribe the chamber member outlet.
  • the plurality of apertures is disposed on a plane generally parallel to the chamber outlet.
  • the tank further includes a water supply inlet to fill the tank with water.
  • the tank further includes a water level governor to selectively provide a predetermined water level.
  • the predetermined water level is between the chamber member inlet and the second opening in the overflow pipe.
  • the water level governor is attached to the tank.
  • the predetermined water level provides a seal between the overflow pipe and the chamber member.
  • the overflow pipe is selectively adjustable to position the second opening above the predetermined water level.
  • the chamber member inlet is substantially annular and of greater area than the chamber member outlet.
  • the chamber member inlet is substantially rectangular and of greater area than the chamber member outlet.
  • Fig. 1 is a schematic cross-sectional view of an embodiment of a chamber located within a toilet cistern.
  • Fig. 2 is a perspective view of the chamber.
  • FIG. 3 is perspective view of the chamber together with a fan assembly.
  • Fig. 4 is a partial cross-sectional view of the chamber and fan assembly.
  • Figure 1 shows a cistern 1 according to a preferred embodiment (without a cistern lid).
  • the cistern 1 has a tank 10 to hold water, as well as a water supply inlet 42, a water supply valve 40 and a float 41, as is found on most gravity flushing and siphonic flushing toilets.
  • the water supply valve 40 and float 41 act as a water level 50 governor as will be known by a person skilled in the art.
  • the overflow pipe 60 has a first opening 61 and a second opening 62.
  • the flush valve 80 When a user activates the flush valve 80 in the usual manner by pushing a flush button (not shown), the water flows out of the tank 10 into a toilet pan or bowl (not shown). When this occurs, the float 41 moves as the tank 10 empties its water contents into the toilet pan, which then causes the water supply valve 40 to move from a closed position to an open position. When the water supply valve 40 is in the open position, water from a water supply is allowed to flow into the tank 10 via the water supply inlet 42. When the water in the cistern 10 reaches a predetermined water level 50, the float 41 causes the water supply valve 40 to move back to the closed position, thereby shutting off the water entering the tank 10 from the water supply inlet 42.
  • Toilets will typically have an overflow pipe 60.
  • the function of the overflow pipe 60 is to expel water from the tank 10 into the toilet pan, when the tank 10 overfills. For example, if the water supply valve 40 fails to function as intended and water continues to enter the tank 10 via the water supply inlet 42, then the water level will continue to rise above the predetermined water level 50. Rather than spilling over the top of the tank 10, the water will flow into the overflow pipe 60 at the second opening 62, and into the toilet pan out of the first opening 61.
  • the cistern 1 may be equipped with a fan assembly 30.
  • Figure 1 shows the fan assembly 30 having an inlet 31 and an outlet 32.
  • the fan assembly 30 has a fan body 34. Inside the fan body 34, there is also has a one-way valve 33 and a fan (not numbered). Reverting to Figure 1, the objective of the fan assembly 30 is to draw gas from the toilet pan via the overflow pipe 60. The gas drawn from the overflow pipe 60 is expelled via the outlet 32 of the fan assembly 30. If further information relating to the operation of the valve 33 and the fan of the fan assembly is required, refer to the Applicant’s aforementioned disclosures.
  • Chamber member 20 has a body 25, which in turn has an inlet 21, an outlet 22 and at least one aperture 23.
  • the chamber body 25 has four apertures 23.
  • Figure 2 shows the chamber body 25 with four apertures 23, it is envisaged that the chamber 20 could be made with fewer larger apertures or a greater number of smaller apertures. However, to improve function of the chamber 20, it is preferable to have more smaller apertures, rather than one large aperture.
  • the at least one aperture 23 may be a slim an elongate slot.
  • Figures 3 and 4 show that the outlet 22 of chamber 20 is sealingly engaged with the inlet 31 of the fan assembly.
  • the outlet 22 of the chamber 20 is press-fit into the inlet 31 of the fan assembly 30 to provide a seal.
  • the chamber 20 may be integrally formed with the inlet 31 of the fan assembly 30.
  • the purpose of the at least one aperture 23 is to allow airflow into a cavity 24 of the chamber 20, from the tank 10. In other words, the purpose of the at least one aperture 23 is to prevent a “bell siphon” effect when the fan assembly 30 is engaged by the user. If no pressure relief aperture(s) is present, then the water in the tank 10 is drawn above the predetermined water level 50 and into the overflow pipe 60 which is undesirable. Alternatively, if the at least one aperture 23 is too large, then too much air is drawn from inside the tank 10 (rather than the overflow pipe and pan as intended) which reduces the “odourless” performance of the cistern 1.
  • the overflow pipe 60 When the tank 10 is filled to the predetermined water level 50, the overflow pipe 60 is sealingly engaged with the chamber member 20.
  • the inlet 21 of the chamber 20 is submerged in the water stored in the tank 10, when the tank 10 is filled to the predetermined water level 50, thereby creating the seal.
  • the overflow pipe 60 has second opening 62 which opens into cavity 24 of the chamber 20, thereby being in fluid communication. It follows that the overflow pipe 60 is in fluid communication with the tank 10 and the toilet pan (not numbered). By submerging the inlet 21 of the chamber 20, a seal is created with the second opening 62 of the overflow pipe 60.
  • This seal is created using the water in the tank 10, meaning that an installer is not required to create a seal between the fan assembly inlet 31 and the over flow pipe second opening 62. Essentially, the seal between the fan assembly inlet 31 and the over flow pipe second opening 62 is created automatically when the tank 10 is filled to the predetermined water level 50.
  • the at least one pressure relief aperture 23 ensures that the predetermined water level 50 remains at the predetermined level and is not sucked above the predetermined water level 50 and into the overflow pipe 60, when the fan is activated by a user.
  • the at least one aperture 23 is sized to allow a first airflow into the chamber and the second opening 62 of the overflow pipe 60 is sized to allow a second airflow into the chamber 20.
  • the first airflow is less than the second airflow. 23, which prevents a “bell siphon” from occurring, when the user flushes the toilet and the fan assembly 30 is engaged.
  • the chamber inlet 21 and outlet 22 are substantially annular.
  • the size of the chamber inlet 21 is greater than that of the chamber outlet 22.
  • the chamber inlet 21 and outlet 22 may be substantially rectangular to assist with fitting inside different cistern tanks.
  • the at least one apertures 23 are minimal enough to maximise volumetric air flow through the overflow pipe 60 from the pan, but large enough to prevent the fan from drawing the water stored in the tank 10 above the predetermined water level 50 and into the overflow pipe 60, thus eliminating a bell siphon effect.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

L'invention concerne une citerne de toilettes (1) destinée à être utilisée avec une cuvette de toilettes. La citerne comprend : un réservoir (10) pour contenir de l'eau; un tuyau de trop-plein (60) en communication fluidique avec le réservoir (10) et la cuvette de toilettes; un élément de chambre (20) entourant au moins une partie du tuyau de trop-plein (60), l'élément de chambre (20) étant doté d'un corps de chambre (25) définissant une cavité (24) et une entrée (21) et une sortie (22), l'entrée (21) étant en communication fluidique avec le tuyau de trop-plein (60); et un ensemble ventilateur (30) situé à l'intérieur du réservoir (10), l'ensemble ventilateur (30) étant doté d'un corps de ventilateur (34) avec une entrée (31) et une sortie. L'entrée (31) de l'ensemble ventilateur est en communication fluidique avec la sortie de corps de ventilateur (32) de telle sorte que le gaz provenant de la cuvette de toilettes est aspiré à travers le tuyau de trop-plein (60), dans la chambre (20) et l'ensemble ventilateur (30), et expulsé à partir de la sortie (32) de l'ensemble ventilateur (30).
PCT/AU2020/051132 2019-10-22 2020-10-21 Siphon connecteur WO2021077161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2019903977A AU2019903977A0 (en) 2019-10-22 Odour connector trap
AU2019903977 2019-10-22

Publications (1)

Publication Number Publication Date
WO2021077161A1 true WO2021077161A1 (fr) 2021-04-29

Family

ID=75619264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2020/051132 WO2021077161A1 (fr) 2019-10-22 2020-10-21 Siphon connecteur

Country Status (1)

Country Link
WO (1) WO2021077161A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166298A (en) * 1976-02-20 1979-09-04 Pearson Raymond H Deodorizer for toilets
US5940893A (en) * 1998-05-26 1999-08-24 Shum; Hai Feasible odorless water closet
WO2008133637A1 (fr) * 2007-04-30 2008-11-06 Smith Robert I Toilettes inodores
US8424121B2 (en) * 2006-01-10 2013-04-23 Geoffrey Charles Quick Odour extraction device for a toilet pan

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166298A (en) * 1976-02-20 1979-09-04 Pearson Raymond H Deodorizer for toilets
US5940893A (en) * 1998-05-26 1999-08-24 Shum; Hai Feasible odorless water closet
US8424121B2 (en) * 2006-01-10 2013-04-23 Geoffrey Charles Quick Odour extraction device for a toilet pan
WO2008133637A1 (fr) * 2007-04-30 2008-11-06 Smith Robert I Toilettes inodores

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