EP0333875B1 - Water closet - Google Patents

Water closet Download PDF

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Publication number
EP0333875B1
EP0333875B1 EP88908335A EP88908335A EP0333875B1 EP 0333875 B1 EP0333875 B1 EP 0333875B1 EP 88908335 A EP88908335 A EP 88908335A EP 88908335 A EP88908335 A EP 88908335A EP 0333875 B1 EP0333875 B1 EP 0333875B1
Authority
EP
European Patent Office
Prior art keywords
water
closet
trap
sump
notch
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.)
Expired - Lifetime
Application number
EP88908335A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0333875A1 (en
EP0333875A4 (en
Inventor
Yoshio Kai
Toshifumi Yoneda
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.)
Toto Ltd
Original Assignee
Toto 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 Toto Ltd filed Critical Toto Ltd
Priority to AT88908335T priority Critical patent/ATE84096T1/de
Publication of EP0333875A1 publication Critical patent/EP0333875A1/en
Publication of EP0333875A4 publication Critical patent/EP0333875A4/en
Application granted granted Critical
Publication of EP0333875B1 publication Critical patent/EP0333875B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • 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
    • E03D1/28—Bowl integral with the flushing cistern
    • 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
    • E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
    • 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

Definitions

  • the present invention relates to a water closet having a drain hole above a floor, according to the preamble part of claim .
  • a water closet having a drain hole above a floor, according to the preamble part of claim .
  • Such a closet is known from GB-A-507 908.
  • a one-piece closet of a low silhouette type has been heretofor known (for example, see Japanese Utility Model Application Laid-Open No. 106584/1986).
  • a height dimension of a flushing tank is adjusted to a closet body as much as possible so as to provide a united impression.
  • a closet of a wall drain type has a core height of a drain hole set to 100 to 150 mm from a floor surface.
  • a one-piece closet of the low silhouette type employs the wall drain type to secure the aforesaid drain hole height, a head from a water surface of a bowl portion to a core of the drain hole decreases and a satisfactory function cannot be exhibited with the aforementioned poor condition attended. Therefore, no one-piece closet of the wall drain type has been present so far.
  • the problem to be solved by the present invention is the provision of a trap drainage of a new construction for a water closet in which the flushing tank is formed integral with a closet body and in which the closet has a drain hole above a floor, the trap drainage being such that a powerful siphon force is obtained".
  • the vent space is partitioned in a wall-like manner by a sheet of water falling from the weir portion and a rise in a water level of the sump portion, and air within the trap is promptly forced toward the drain hole by a force of water flow so that the pressure in the trap drainage becomes negative pressure.
  • reference character (A) designates a closet body, and (B) a flushing tank formed integral with an upper half at the rear thereof, the flushing tank (B) being formed so that a height dimension of the flushing tank (B) is adjusted to the closet body (A) as much as possible to provide a united impression with the closet body (A).
  • a rim water passage (9) provided along the upper edge of a bowl portion (1) is communicated with an intermediate portion heightwise of the flushing tank (B) through a feed chamber (10) provided at the rear of the bowl portion (1), and a discharge opening (11) bored in the bottom side of the bowl portion (1) is communicated with the bottom of the flushing tank (B) through a water guide passage (12) provided outside the bowl portion (1) so that a part of the flushing water within the tank (B) is supplied along the wall surface of the bowl portion 1 from a water injection hole (13)bored in the lower surface of the rim water passage (9) and the remaining greater part thereof is spirally supplied from the discharge opening (11) to the bottom of the bowl portion (1).
  • a trap drainage (2) for discharging flush water supplied to the bowl portin (1) outside the closet together with sewage is provided to be communicated with the bowl portion (1).
  • an inlet (14) is opened to the bottom of the bowl (1), and an outlet, that is, a drain hole (3) is opened to a substantially intermediate position between the lower end of the flushing tank (B) and the lower end of the closet body (A) at the back of the closet body (A), both the inlet and drain hole (14, 3) being communicated with each other to form a substantially S-character configuration.
  • the trap drainage (2) is composed of a portion obliquely and upwardly extending from the inlet (14) opened to the bottom of the bowl portion (1) toward the rear portion of the closet body (A) (hereinafter referred to as a portion a ), a portion which is continuous to the upper end of said portion a , substantially vertically downwardly extends and reaches a position lower than a height positions of the inlet (14) and drain hole (3) (hereinafter referred to as a portion b ), and a portion which is continuous to said portion b and obliquely and upwardly extends toward the drain hole (3) (hereafter referred to as a portion c ), the bottom wall at the upper end of the portion a forming a weir portion (4).
  • a diameter of the portion b is gradually reduced downwardly to partially narrow the diameter of the drain hole and forms a sump portion (5) from the lower end of the portion b to the halfway portion of the portion c .
  • a downwardly extending partitioning wall (7) is formed on the upper wall of the sump (5), more specifically, on the upper wall of a boundary portion between the portions b and c so as to leave a slight vent space (6) between the lower end of the partitioning wall and a water surface or level of the sump (5).
  • the partitioning wall (7) is provided with a notch (8) having a suitable width from the lower end thereof to the heightwise mid-portion.
  • the optimum dimension of the vent space (6) is approximately 20 mm in order to induce siphon.
  • the present invention being constructed as described above, there are the following advantages.
  • vent space is closet in a wall-like manner by water falling from the weir portion and caused a rise in the water level of the sump portion. Therefore, the air within the trap can be quickly forced by the water toward the drain hole to give the interior of the trap negative pressure with respect to the atmosphere so that siphon action easily occurs.
  • the water feed momentary flow rate is materially low as compared to that of a tank closely connected to a water closet or a closet using a flush valve.
  • this closed is a one-piece closet of a low silhouette type wherein when, as a wall drain type, a core height of a drain hole is set to secure about 100 mm from a floor surface, a head from a water level of the bowl portion to the core of the drain hole is small, a fully satisfactory sewage discharge function can be obtained as the wall drain type installation.
  • the closet of the present invention can be installed without any trouble in high buildings, luxury mansions, luxury hotels and the like in which the ceiling beams obstruct underfloor piping and often lack piping spaces in the ceiling, thus making it difficult to install a one-piece closet of a low silhouette type.
  • the closet of the present invention can satisfy with the demand of markets.
  • siphon termination time remarkably extends due to the rise in water level of the sump portion and the falling water from the weir portion to make it difficult to secure the depth of sealed water.
  • Fig. 1 is a sectional view of a water closet showing one embodiment of the present invention
  • Fig. 2 is a partly cutaway plan view
  • Fig. 3 is a sectional view taken on line III-III of Fig. 1
  • Fig. 4 is a sectional view taken on line IV-IV of Fig. 1
  • Fig. 5 is a sectional view taken on line V-V of Fig. 1.

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)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Liquid Crystal Substances (AREA)
  • Toilet Supplies (AREA)
EP88908335A 1987-09-16 1988-09-16 Water closet Expired - Lifetime EP0333875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88908335T ATE84096T1 (de) 1987-09-16 1988-09-16 Toilette.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62233445A JPS6475741A (en) 1987-09-16 1987-09-16 Water closet
JP233445/87 1987-09-16

Publications (3)

Publication Number Publication Date
EP0333875A1 EP0333875A1 (en) 1989-09-27
EP0333875A4 EP0333875A4 (en) 1990-02-22
EP0333875B1 true EP0333875B1 (en) 1992-12-30

Family

ID=16955154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908335A Expired - Lifetime EP0333875B1 (en) 1987-09-16 1988-09-16 Water closet

Country Status (7)

Country Link
EP (1) EP0333875B1 (enrdf_load_stackoverflow)
JP (1) JPS6475741A (enrdf_load_stackoverflow)
KR (1) KR950002128B1 (enrdf_load_stackoverflow)
AT (1) ATE84096T1 (enrdf_load_stackoverflow)
DE (1) DE3877183T2 (enrdf_load_stackoverflow)
HK (1) HK71095A (enrdf_load_stackoverflow)
WO (1) WO1989002501A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA01010465A (es) * 1999-05-04 2002-05-06 Geberit Technik Ag Instalacion de taza de bano ahorradora de agua.
JP4793614B2 (ja) * 2001-08-06 2011-10-12 Ｔｏｔｏ株式会社 床上排水サイフォン式水洗便器
KR100588522B1 (ko) * 2004-02-19 2006-06-14 동서산업주식회사 물수용 공간을 몸체에 형성한 양변기
CN103306355B (zh) * 2013-06-27 2015-07-08 佛山市博尔通节能洁具有限公司 一种无水箱节水直排座便器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812953Y2 (ja) * 1979-06-27 1983-03-12 株式会社イナックス 水洗便器
JPS58115587U (ja) * 1982-01-28 1983-08-06 株式会社イナックス 水洗便器
JPS6221180U (enrdf_load_stackoverflow) * 1985-07-19 1987-02-07

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR808085A (fr) * 1936-07-10 1937-01-28 Perfectionnement aux installations de water-closets
GB507908A (en) * 1937-12-18 1939-06-19 Associated Clay Ind Ltd Improvements in or relating to water closet suites
GB1099707A (en) * 1965-11-11 1968-01-17 John Steventon And Sons Ltd Double trap siphonic water closet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812953Y2 (ja) * 1979-06-27 1983-03-12 株式会社イナックス 水洗便器
JPS58115587U (ja) * 1982-01-28 1983-08-06 株式会社イナックス 水洗便器
JPS6221180U (enrdf_load_stackoverflow) * 1985-07-19 1987-02-07

Also Published As

Publication number Publication date
JPH0375695B2 (enrdf_load_stackoverflow) 1991-12-03
JPS6475741A (en) 1989-03-22
HK71095A (en) 1995-05-19
DE3877183T2 (de) 1993-05-19
EP0333875A1 (en) 1989-09-27
KR950002128B1 (ko) 1995-03-13
DE3877183D1 (de) 1993-02-11
ATE84096T1 (de) 1993-01-15
EP0333875A4 (en) 1990-02-22
WO1989002501A1 (en) 1989-03-23
KR890701851A (ko) 1989-12-22

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