WO2004015211A1 - Odour barrier for waterless urinals - Google Patents

Odour barrier for waterless urinals Download PDF

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Publication number
WO2004015211A1
WO2004015211A1 PCT/DK2003/000540 DK0300540W WO2004015211A1 WO 2004015211 A1 WO2004015211 A1 WO 2004015211A1 DK 0300540 W DK0300540 W DK 0300540W WO 2004015211 A1 WO2004015211 A1 WO 2004015211A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
level
discharge pipe
liquid
discharge
Prior art date
Application number
PCT/DK2003/000540
Other languages
French (fr)
Inventor
John Reese
Original Assignee
Uridan A/S
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 Uridan A/S filed Critical Uridan A/S
Priority to AU2003250324A priority Critical patent/AU2003250324A1/en
Publication of WO2004015211A1 publication Critical patent/WO2004015211A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/28—Odour seals
    • E03C1/281—Odour seals using other sealants than water
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K11/00—Closets without flushing; Urinals without flushing; Chamber pots; Chairs with toilet conveniences or specially adapted for use with toilets
    • A47K11/12—Urinals without flushing
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/28—Odour seals
    • E03C1/29—Odour seals having housing containing dividing wall, e.g. tubular

Definitions

  • the present invention concerns an odour barrier for a drain system in a urinal, including three interacting pipe elements, an outer pipe, a discharge pipe and a level pipe, where the outer pipe constitutes a container in which the level and discharge pipes are fitted, where the discharge pipe is covered upwards by a cover with at least one cover aperture disposed between the outer pipe and the discharge pipe, where the level pipe has at least one level pipe opening for receiving liquid, where the at least one level pipe opening is at least in part disposed at a level under the cover apertures, where the discharge pipe has at least one discharge pipe opening at a level under the level pipe opening for by presence of the liquid in the container at a level over the discharge pipe opening to constitute a stench trap.
  • Urinals with odour barrier operate without using flushing water.
  • the odour barrier is furthermore of the kind consisting of three pipes disposed within each other in such a way that a residual amount of liquid is maintained all the time. The residual amount forms a trap. This principle is known from various traps in sanitary installations of buildings.
  • barrier liquid in an odour barrier of the said type being incorporated in a urinal is achieved that the urinal becomes free from odour. No gasses penetrate up from the sewer and old urine sinks to the bottom, and lies under the barrier liquid.
  • a disadvantage of traditional odour barriers is that the barrier liquid is used rapidly.
  • an odour barrier in which the liquid is conducted horizontally via a baffle and further up to the level pipe opening. During this horizontal movement of the liquid, the carried barrier liquid is released from the liquid and will subsequently rise in the container between the outer pipe and the discharge pipe.
  • the disadvantage of the described odour barrier is that it takes up relatively much space.
  • an odour barrier according of the invention which is peculiar in that the at least one cover aperture is disposed in immediate vicinity of either the outer side of the discharge pipe or the inner side of the outer pipe, and in that on the outer side of the discharge pipe and the inner side of the outer pipe, respectively, there is provided at least one projecting element at a level under the level pipe opening and above the discharge pipe opening.
  • the cover apertures By disposing the cover apertures in immediate vicinity of the outer side of the discharge pipe is achieved that the liquid does not stick in the cover apertures but the outer side of the discharge pipe conducts the drop further down into the odour barrier. If a drop of liquid, e.g. urine, dries in a cover opening, the salts contained in the urine will settle as deposits, and the risk of the cover apertures clogging is increased.
  • liquid e.g. urine
  • the projecting element is an O-ring extending around the outer side of the discharge pipe and having one of the following cross-sectional shapes: circular, rectangular or polygonal.
  • the O-rings may be mounted directly onto the pipe, but may alternatively be mounted in recesses. With a recess, the O-ring will be secured at the same level, irrespectively of the number of strong flushings in the urinal.
  • the projecting element of the discharge pipe may be provided in the shape of a number of fins or a spiral extending along the discharge pipe. These projecting elements may be provided during making of the discharge pipe.
  • the projecting element is an O- ring connected to the inner side of the outer pipe.
  • the O-ring may be mounted directly onto the pipe, but may alternatively be secured in a recess. With a recess, the O-ring will be secured at the same level, irrespectively of the number of strong flushings in the urinal.
  • the securing of the O-ring may be performed with e.g. gluing, welding or similar fastening processes.
  • the discharge pipe may upwards be connected with the cover, so that by removing the cover, the discharge pipe is also removed from the odour barrier. This may be an advantage by cleaning the urinal and the odour barrier.
  • cover and discharge pipe may be connected separately to the outer pipe.
  • the components of the odour barrier are to be made of materials that may withstand an aggressive environment, and may be metal, steel and plastics of all kinds, according to need.
  • Fig. 1 shows disposition of an odour barrier in a urinal
  • Fig. 2 shows a cross-section of an odour barrier according to the invention
  • Fig. 3 shows a detail of a cross-section of an odour barrier in an alternative embodiment.
  • a urinal 1 where an odour barrier 2 and a drain pipe 3 are disposed at the bottom of the urinal 1.
  • Fig. 2 On Fig. 2 is seen the odour barrier 2 which is mounted in the outlet 4 of the urinal bowl 5.
  • the odour barrier 2 includes an outer pipe 6, a discharge pipe 7 and a level pipe 8.
  • the outer pipe 6 is downwards closed with a bottom part 10 in which is formed a container 9.
  • the discharge pipe 7 and the level pipe 8 are fitted, where the discharge pipe 7 surrounds a part of the level pipe 8.
  • the lower part of the level pipe 8 goes through the bottom part 10 of the container 9 and is connected to the drain pipe 3.
  • the upper part of the level pipe 8 is obliquely cut off with a level pipe opening 11 partially disposed at a level under the cover apertures 12.
  • the upper part of the discharge pipe 7 is connected with the cover 13 and extends down into the container 9 so that the discharge pipe opening 14 is at a level under the level pipe opening 11 for by presence of liquid in the container 9 at a level above the discharge pipe opening 14 to constitute a trap.
  • cover 13 there is provided a number of cover apertures 12 so that their mouth 17 at the underside of the cover 13 is close to the outer side of the discharge pipe 7. This implies that liquid drops do not stick to the cover aperture 12, but are conducted down along the outer side of the discharge pipe 7.
  • a barrier liquid 18 floating upon the liquid 19 In the interspace between outer pipe 6 and discharge pipe 7 there is provided a barrier liquid 18 floating upon the liquid 19.
  • FIG. 3 On Fig. 3 is seen an alternative embodiment of the odour barrier 2, where a number of cover apertures 12 are provided in the cover 13, so that their mouth 17 at the underside of the cover 13 is close to the inner side of the outer pipe 6.
  • a recess 15 provided under the level of the barrier liquid 18 and extending annularly at the inner side of the outer pipe 6 in which is fastened an O-ring 16 with circular cross-sectional shape.

Landscapes

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

Abstract

The invention concerns an odour barrier for a drain system in a urinal, including three interacting pipe elements, an outer pipe, a discharge pipe and a level pipe, which by presence of the liquid in a container constituted by the outer pipe in which the discharge pipe and the level pipe are fitted constitute a stench trap, where a number of cover apertures are disposed in immediate vicinity of either the outer side of the discharge pipe or the inner side of the outer pipe, and in that on the outer side of the discharge pipe and the inner side of the outer pipe, respectively, there is provided at least one projecting element.

Description

ODOUR BARRIER FOR WATERLESS URINALS
The present invention concerns an odour barrier for a drain system in a urinal, including three interacting pipe elements, an outer pipe, a discharge pipe and a level pipe, where the outer pipe constitutes a container in which the level and discharge pipes are fitted, where the discharge pipe is covered upwards by a cover with at least one cover aperture disposed between the outer pipe and the discharge pipe, where the level pipe has at least one level pipe opening for receiving liquid, where the at least one level pipe opening is at least in part disposed at a level under the cover apertures, where the discharge pipe has at least one discharge pipe opening at a level under the level pipe opening for by presence of the liquid in the container at a level over the discharge pipe opening to constitute a stench trap.
Urinals with odour barrier operate without using flushing water. The odour barrier is furthermore of the kind consisting of three pipes disposed within each other in such a way that a residual amount of liquid is maintained all the time. The residual amount forms a trap. This principle is known from various traps in sanitary installations of buildings.
By using oil or other liquid with low specific weight as filling or residual liquid, barrier liquid, in an odour barrier of the said type being incorporated in a urinal is achieved that the urinal becomes free from odour. No gasses penetrate up from the sewer and old urine sinks to the bottom, and lies under the barrier liquid.
A disadvantage of traditional odour barriers is that the barrier liquid is used rapidly.
This happens particularly in cases where a strong flushing of liquid in the urinal occurs, e.g. if the urinal is flush-cleaned. The strong flushing provides that the liquid carries the barrier liquid with through the odour barrier and into the sewer system.
In order to reduce this carrying with, according to EP 0857242 there is provided an odour barrier in which the liquid is conducted horizontally via a baffle and further up to the level pipe opening. During this horizontal movement of the liquid, the carried barrier liquid is released from the liquid and will subsequently rise in the container between the outer pipe and the discharge pipe. The disadvantage of the described odour barrier is that it takes up relatively much space.
It is the purpose of the invention to provide a simple odour barrier which is easy to produce and does not take up much space, and which reduces unwanted flushing of barrier liquid into the sewer system.
This is achieved with an odour barrier according of the invention, which is peculiar in that the at least one cover aperture is disposed in immediate vicinity of either the outer side of the discharge pipe or the inner side of the outer pipe, and in that on the outer side of the discharge pipe and the inner side of the outer pipe, respectively, there is provided at least one projecting element at a level under the level pipe opening and above the discharge pipe opening.
By disposing the cover apertures in immediate vicinity of the outer side of the discharge pipe is achieved that the liquid does not stick in the cover apertures but the outer side of the discharge pipe conducts the drop further down into the odour barrier. If a drop of liquid, e.g. urine, dries in a cover opening, the salts contained in the urine will settle as deposits, and the risk of the cover apertures clogging is increased.
By providing a projecting element at the outer side of the discharge pipe or the inner side of the outer pipe, respectively, there will be possibility of reducing the flushing of the barrier means. The liquid with carried barrier means will, when passing the projecting element, be whirled around, and turbulence is induced in the liquid. This turbu- lence implies that the barrier means will be released from the liquid and rise up to the surface again.
In a preferred embodiment of the invention, the projecting element is an O-ring extending around the outer side of the discharge pipe and having one of the following cross-sectional shapes: circular, rectangular or polygonal. The O-rings may be mounted directly onto the pipe, but may alternatively be mounted in recesses. With a recess, the O-ring will be secured at the same level, irrespectively of the number of strong flushings in the urinal. In order to ensure separation of the barrier means from the liquid, there may be mounted a number of O-rings down along the outer side of the discharge pipe, so that over a great length of the discharge pipe turbulence is induced in the liquid flow through the odour barrier.
In an alternative version of the invention, the projecting element of the discharge pipe may be provided in the shape of a number of fins or a spiral extending along the discharge pipe. These projecting elements may be provided during making of the discharge pipe.
In a further, alternative embodiment of the invention, the projecting element is an O- ring connected to the inner side of the outer pipe. The O-ring may be mounted directly onto the pipe, but may alternatively be secured in a recess. With a recess, the O-ring will be secured at the same level, irrespectively of the number of strong flushings in the urinal. The securing of the O-ring may be performed with e.g. gluing, welding or similar fastening processes.
In an embodiment of the invention, the discharge pipe may upwards be connected with the cover, so that by removing the cover, the discharge pipe is also removed from the odour barrier. This may be an advantage by cleaning the urinal and the odour barrier.
In an alternative embodiment of the invention, cover and discharge pipe may be connected separately to the outer pipe.
The components of the odour barrier are to be made of materials that may withstand an aggressive environment, and may be metal, steel and plastics of all kinds, according to need.
The invention is explained in more detail in the following with reference to the draw- ings, where:
Fig. 1 shows disposition of an odour barrier in a urinal,
Fig. 2 shows a cross-section of an odour barrier according to the invention, and Fig. 3 shows a detail of a cross-section of an odour barrier in an alternative embodiment.
On Fig. 1 is seen a urinal 1 where an odour barrier 2 and a drain pipe 3 are disposed at the bottom of the urinal 1.
On Fig. 2 is seen the odour barrier 2 which is mounted in the outlet 4 of the urinal bowl 5. The odour barrier 2 includes an outer pipe 6, a discharge pipe 7 and a level pipe 8. The outer pipe 6 is downwards closed with a bottom part 10 in which is formed a container 9.
In the container 9, the discharge pipe 7 and the level pipe 8 are fitted, where the discharge pipe 7 surrounds a part of the level pipe 8.
The lower part of the level pipe 8 goes through the bottom part 10 of the container 9 and is connected to the drain pipe 3. The upper part of the level pipe 8 is obliquely cut off with a level pipe opening 11 partially disposed at a level under the cover apertures 12.
The upper part of the discharge pipe 7 is connected with the cover 13 and extends down into the container 9 so that the discharge pipe opening 14 is at a level under the level pipe opening 11 for by presence of liquid in the container 9 at a level above the discharge pipe opening 14 to constitute a trap.
At the outer side of the discharge pipe 7, there is provided a recess 15 extending around the discharge pipe 7 in which is mounted an O-ring 16 with circular cross- sectional shape.
In the cover 13 there is provided a number of cover apertures 12 so that their mouth 17 at the underside of the cover 13 is close to the outer side of the discharge pipe 7. This implies that liquid drops do not stick to the cover aperture 12, but are conducted down along the outer side of the discharge pipe 7. In the interspace between outer pipe 6 and discharge pipe 7 there is provided a barrier liquid 18 floating upon the liquid 19.
On Fig. 3 is seen an alternative embodiment of the odour barrier 2, where a number of cover apertures 12 are provided in the cover 13, so that their mouth 17 at the underside of the cover 13 is close to the inner side of the outer pipe 6. A recess 15 provided under the level of the barrier liquid 18 and extending annularly at the inner side of the outer pipe 6 in which is fastened an O-ring 16 with circular cross-sectional shape.
The invention is not limited to the embodiment shown on the drawings and described above. Other forms of pipes and projecting elements are possible within the scope of this invention and the matter specified in the claims.

Claims

1. Odour barrier for a drain system in a urinal, including three interacting pipe elements, an outer pipe, a discharge pipe and a level pipe, where the outer pipe consti- tutes a container in which the level and discharge pipes are fitted, where the discharge pipe is covered upwards by a cover with at least one cover aperture disposed between the outer pipe and the discharge pipe, where the level pipe has at least one level pipe opening for receiving liquid, where the at least one level pipe opening is at least in part disposed at a level under the cover aperture, where the discharge pipe has at least one discharge pipe opening at a level under the level pipe opening for by presence of the liquid in the container at a level over the discharge pipe opening to constitute a stench trap, characterised in that the at least one cover aperture is disposed in immediate vicinity of either the outer side of the discharge pipe or the inner side of the outer pipe, and in that on the outer side of the discharge pipe and the inner side of the outer pipe, respectively, there is provided at least one projecting element at a level under the level pipe opening and above the discharge pipe opening.
2. Odour barrier according to claim 1, characterised in that the projecting element is an O-ring extending around the outer side of the discharge pipe and having one of the following cross-sectional shapes: circular, rectangular or polygonal.
PCT/DK2003/000540 2002-08-13 2003-08-13 Odour barrier for waterless urinals WO2004015211A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003250324A AU2003250324A1 (en) 2002-08-13 2003-08-13 Odour barrier for waterless urinals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200201203 2002-08-13
DKPA200201203 2002-08-13

Publications (1)

Publication Number Publication Date
WO2004015211A1 true WO2004015211A1 (en) 2004-02-19

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Application Number Title Priority Date Filing Date
PCT/DK2003/000540 WO2004015211A1 (en) 2002-08-13 2003-08-13 Odour barrier for waterless urinals

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AU (1) AU2003250324A1 (en)
WO (1) WO2004015211A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7636957B2 (en) 2005-08-30 2009-12-29 Zurn Industries, Llc Urinal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1125196A (en) * 1966-09-03 1968-08-28 Ernst F Ing Ag Siphon discharge fitting for urinals
DE2523462A1 (en) * 1975-05-27 1976-12-16 Passavant Werke FLOOR DRAIN WITH ODOR TRAP
CH655341A5 (en) * 1980-10-29 1986-04-15 Willi Louis Syphon insert which can be used as an odour seal in end pieces of sanitary systems
WO1997015735A1 (en) * 1995-10-25 1997-05-01 Gorges Ditmar L Horizontal-flow oil-sealant-preserving drain odor trap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1125196A (en) * 1966-09-03 1968-08-28 Ernst F Ing Ag Siphon discharge fitting for urinals
DE2523462A1 (en) * 1975-05-27 1976-12-16 Passavant Werke FLOOR DRAIN WITH ODOR TRAP
CH655341A5 (en) * 1980-10-29 1986-04-15 Willi Louis Syphon insert which can be used as an odour seal in end pieces of sanitary systems
WO1997015735A1 (en) * 1995-10-25 1997-05-01 Gorges Ditmar L Horizontal-flow oil-sealant-preserving drain odor trap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7636957B2 (en) 2005-08-30 2009-12-29 Zurn Industries, Llc Urinal

Also Published As

Publication number Publication date
AU2003250324A1 (en) 2004-02-25

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