EP3394356B1 - Toilettes (wc) à siphon économiseur d'eau de 2,5 litres - Google Patents

Toilettes (wc) à siphon économiseur d'eau de 2,5 litres Download PDF

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Publication number
EP3394356B1
EP3394356B1 EP16716311.2A EP16716311A EP3394356B1 EP 3394356 B1 EP3394356 B1 EP 3394356B1 EP 16716311 A EP16716311 A EP 16716311A EP 3394356 B1 EP3394356 B1 EP 3394356B1
Authority
EP
European Patent Office
Prior art keywords
water
rim
trap
pan
holes
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.)
Active
Application number
EP16716311.2A
Other languages
German (de)
English (en)
Other versions
EP3394356A1 (fr
Inventor
Somchai Wongaroon
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.)
Individual
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Individual
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Filing date
Publication date
Priority claimed from TH1503002191U external-priority patent/TH13533A3/th
Application filed by Individual filed Critical Individual
Publication of EP3394356A1 publication Critical patent/EP3394356A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/18—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
    • E03D1/24—Low-level flushing systems
    • 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
    • E03D1/24—Low-level flushing systems
    • E03D1/26—Bowl with flushing cistern mounted on the rearwardly extending end of the bowl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • E03D11/08—Bowls with means producing a flushing water swirl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D2201/00—Details and methods of use for water closets and urinals not otherwise provided for
    • E03D2201/40—Devices for distribution of flush water inside the bowl

Definitions

  • the invention relates to a P-trap water closet according to the preamble of claim 1.
  • the existing 4.5 Litres Gravity fed Water Closet (W.C.) consists of a Pan and Cistern.
  • the Cistern can be mounted directly on to the Pan (Close-coupled) or fixed to the wall (Low level) above the Pan. Water is stored inside the Cistern until discharged manually by handle or push button. The water will fall by gravity into the Pan rim where it is directed through holes in the base of the rim on to the inside face of the Pan bowl. Water will continue to run down the Pan bowl and into the sump at the base of the Pan. This action will clean the inside of the Pan bowl washing off any waste deposits. The cleaning water will run into the Pan sump creating an overflow action at the rear section of the Pan trap-way.
  • the existing ceramic design and technology of the Pan restricts the volume of water required per full flush to around 4.5 Litres minimum.
  • the invention objective is designed to reduce the volume of water required per full flush to 2.5 Litres.
  • the new design is based on the existing gravity fed water system, using no external energy source such as pump, air pressure, vacuum etc. The new design will comply fully with national standards prevailing world wide.
  • the present invention is centred around three internal areas of the W.C.
  • JP H06 287990 A discloses a siphon type flush toilet bowl having a trap drain passage formed by mutually connecting a rising part, a down part, and a horizontal part, the section of the trap drain passage is extended from the down part toward the horizontal part.
  • the sections of the down part and the horizontal part are formed into circular and horizontally long forms, respectively, and the short diameter of the horizontal part is set to substantially the same as the diameter of the down part.
  • WO 03/060244 A1 discloses a toilet that enables the flushing of feces and urine using only a small amount of flushing water, e.g., 2.3 liters.
  • the toilet comprises a flush lever disposed inside a water supply tank, the flush lever comprises a weight containing part connected to a hinge axis extending to both sides of the water supply tank at the center part of the weight containing part like a seesaw such that a rotary weight disposed inside the weight containing part can freely move to right and left, a flush handle exposed to the outside of the water supply tank and fixed and joined to one end of the weight containing part, and a connecting part fixed and joined to the other part such that flapper assembly and the blocking means for discharge conduit engage with the operation of the flush handle.
  • the overall objective is to reduce the amount of water required for a gravity fed Water Closet (W.C.) full flush from around 4.5 Litres to 2.5 Litres.
  • W.C. Water Closet
  • the invention required new design in three internal areas of the W.C. as follows:
  • the water flow pattern is created by the size, shape and angle of the water distribution holes in the base of the Pan rim.
  • the ultimate size, shape and angle of the holes in the Pan rim is so variable that it is impossible to calculate.
  • the final most efficient holes pattern was determined by 25 years of ceramic sanitaryware manufacturing experience and 2 years of laboratory and quality assurance testing.
  • the new design for sump and trap-way 6 is based on shape and size to give the correct water carrying velocity and water cleaning velocity. It is also designed to minimise resistance to moving waste matter.
  • the shape of the sump creates the water turbulence and correct carrying velocity push between the Pan bowl and the trap-way 6.
  • the shape of the trap-way 6 is round, instead of the predominant squarer shape of the conventional Pan trap-way 6.
  • the new design trap-way has a smooth transition from 62.5mm dia. sump side 10 to 70mm dia. exit side 12. This was found to provide the correct carrying and cleaning velocity to transfer all waste matter to the external services when working in combination with the other two new design areas (Distribution holes and Cistern 8).
  • the trap-way 6 is also fully glazed inside to minimise wall resistance to the conveyed waste.
  • the new design for the water distribution holes 14, 20 and 22 is based on know-how and many trials over months of research.
  • the design detail is centred around the hole size, shape, position and angle. Holes are punched by hand using a precision gauge while clay is in the green state.
  • the hole pattern will direct water to efficiently clean the Pan bowl and provide the water agitation push in the sump to create the initial carrying velocity to convey the waste matter.
  • the new design of the water cistern 8 is very similar to the existing conventional water cistern.
  • the height of the water level inside the new cistern will determine the pressure inside the rim 2.
  • the slimmer cistern will be the only difference in external appearance of the 2.5 Litre W.C.
  • Water flow is from the cistern 8. Static height of water in the cistern 8 provides the pressure in the Pan rim 2. Water is directed out of rim 2 via holes in the base 4 of the rim 2. The hole pattern will dictate the cleaning efficiency on the bowl sides and the rate of directed turbulence in the sump. The created water carrying velocity in the sump and trap-way will convey the waste matter to external services. During this operation, the correct water cleaning velocity will clean the sump and trap-way 6. All operations will comply with International standards.

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)
  • Sanitary Device For Flush Toilet (AREA)

Claims (1)

  1. Toilette (WC) à siphon en P (1) comprenant :
    [a] une cuvette avec
    [i] un rebord (2) avec une base (4) ayant un motif de trous de distribution d'eau s'étendant de manière adjacente à la courbe de trou intérieur du rebord (2) et
    [ii] un siphon (6), ledit siphon étant rond et entièrement vitrifié avec une transition régulière, et
    [b] une citerne (8) d'une capacité de 2,5 litres,
    caractérisée en ce que
    [c] ledit siphon (6) présente une courbure rétrécie de 62,50 mm de diamètre au niveau du côté de puisard (10) et de 70,00 mm de diamètre au niveau du côté de sortie (12), de sorte que le volume d'eau et la résistance à l'eau naturelle soient réduits au niveau minimum alors que le volume d'eau de 2,5 litres offre toujours un passage régulier des déchets pour maintenir la vitesse de transport et de nettoyage de l'eau,
    en ce que
    [d] ledit motif de distribution d'eau dudit rebord a
    [i] 5 premiers trous circulaires (14) de 5 mm de diamètre, chacun desdits 5 premiers trous circulaires (14) étant positionné au niveau de l'extrémité frontale (16) dudit rebord et orienté à un angle de flexion de 28 degrés par rapport au plan supérieur (18) du rebord, et lesdits 5 premiers trous circulaires (14) étant agencés symétriquement par rapport au plan vertical central de la cuvette (1),
    [ii] 2 deuxièmes trous allongés (20) agencés symétriquement par rapport audit plan central, lesdits deuxièmes trous allongés (20) ayant une longueur de 85 mm et un diamètre de 15 mm, lesdits deuxièmes trous allongés (20) étant agencés l'un au niveau du côté gauche et l'autre au niveau du côté droit de la cuvette (1), et le bord de chacun desdits deuxièmes trous allongés (20) qui est le plus proche de ladite extrémité frontale (16) étant à une distance de 35 mm dans la direction dudit plan vertical central, et
    [iii] 22 troisièmes trous circulaires (22) de 5 mm de diamètre, répartis le long dudit rebord (2) entre lesdits deux deuxièmes trous allongés (20), lesdits troisièmes trous circulaires (22) étant positionnés à un angle de flexion de 28 degrés par rapport audit plan supérieur (18) du rebord (2) et à une distance de 20 mm d'un trou à un trou adjacent.
EP16716311.2A 2015-12-25 2016-01-13 Toilettes (wc) à siphon économiseur d'eau de 2,5 litres Active EP3394356B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TH1503002191U TH13533A3 (th) 2015-12-25 สุขภัณฑ์ที่ใช้น้ำ 2.50 ลิตร แบบท่อออกกำแพง
PCT/TH2016/000003 WO2017111709A1 (fr) 2015-12-25 2016-01-13 Toilettes (wc) à siphon économiseur d'eau de 2,5 litres

Publications (2)

Publication Number Publication Date
EP3394356A1 EP3394356A1 (fr) 2018-10-31
EP3394356B1 true EP3394356B1 (fr) 2019-10-30

Family

ID=59090876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16716311.2A Active EP3394356B1 (fr) 2015-12-25 2016-01-13 Toilettes (wc) à siphon économiseur d'eau de 2,5 litres

Country Status (2)

Country Link
EP (1) EP3394356B1 (fr)
WO (1) WO2017111709A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB504872A (en) * 1938-06-25 1939-05-02 Twyfords Ltd Improvements relating to water-closet basins
JP3296449B2 (ja) * 1993-04-06 2002-07-02 東陶機器株式会社 サイホン式水洗便器
KR100256323B1 (ko) * 1994-12-28 2000-05-15 시게후치 마사토시 수세식대변기
CN1246546C (zh) * 2001-08-13 2006-03-22 东陶机器株式会社 大便器及其制造方法
KR200277574Y1 (ko) * 2002-01-18 2002-06-14 주식회사 보고 글로발 초 절수형 양변기
KR100509069B1 (ko) * 2003-06-10 2005-08-18 전영세 가변식 사이폰관을 갖는 양변기
US8151379B2 (en) * 2007-05-07 2012-04-10 Kohler Co. Toilet with reduced water usage
US9003575B2 (en) * 2008-02-12 2015-04-14 Kohler Co. Toilets with improved trapways

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3394356A1 (fr) 2018-10-31
WO2017111709A1 (fr) 2017-06-29

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