WO2011036252A1 - Système de piégeage de liquide et scellement étanche vis-à-vis des odeurs - Google Patents

Système de piégeage de liquide et scellement étanche vis-à-vis des odeurs Download PDF

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Publication number
WO2011036252A1
WO2011036252A1 PCT/EP2010/064150 EP2010064150W WO2011036252A1 WO 2011036252 A1 WO2011036252 A1 WO 2011036252A1 EP 2010064150 W EP2010064150 W EP 2010064150W WO 2011036252 A1 WO2011036252 A1 WO 2011036252A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
liquid trap
buoyancy
trap system
traps
Prior art date
Application number
PCT/EP2010/064150
Other languages
English (en)
Inventor
Gert Söderström
Johnny Söderström
Original Assignee
Soederstroem Gert
Soederstroem Johnny
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 Soederstroem Gert, Soederstroem Johnny filed Critical Soederstroem Gert
Publication of WO2011036252A1 publication Critical patent/WO2011036252A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0407—Floor drains for indoor use
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F2005/0416—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal

Definitions

  • the present invention relates to a liquid trap system adapted to allow a liquid to pass through the liquid trap system in a downstream direction while preventing gasses from passing through the liquid trap system in an upstream direction.
  • the present invention relates to a liquid trap system adapted to allow a liquid to pass through the liquid trap system in a downstream direction while preventing gasses from passing through the liquid trap system in an upstream direction, wherein the liquid trap system comprises at least first and a second liquid trap.
  • the liquid trap system may comprise two or more liquid traps such as two, such as three, such as four, etc. Provision of two or more liquid traps allows for different use of the individual liquid traps. E.g. such that a first drain pipe is connected to a first liquid trap and a second drain pipe is connected to a second liquid trap, while a third liquid trap is arranged to function as a floor drain, i.e. fixture set into a floor, used to drain water from the surface of the floor and into a plumbing drainage system.
  • a floor drain i.e. fixture set into a floor
  • the provision of a plurality of different liquid traps allows for a more compact design of the entire liquid trap system, as the total height of the system may be reduced. This is especially the case when a buoyancy member is arranged/used to close the liquid trap, as is described in further detail below.
  • At least two - such as all - of the liquid traps are provided in the same housing. Moreover, at least two - such as all - of the liquid traps may be provided in series or in parallel. In the context of the present invention the liquid traps are provided in series when liquid flowing out of a first liquid trap can only escape the liquid trap system by flowing through yet another liquid trap. In the context of the present invention, the liquid traps are provided in parallel when liquid passing though a first liquid trap shall not pass thought a second liquid trap in order to escape the liquid trap system.
  • the liquid trap system forms part of a floor drain e.g. such that the upper surface of the liquid trap system is adapted to be positioned at the same level as the floor in which the liquid trap system is provided.
  • a mesh for collecting larger particles e.g. hair may be provided on the upper surface of the floor drain.
  • the liquid trap system may be used in connection with a drainage system in a kitchen e.g. a private or an industrial kitchen, a laboratory e.g. a research or test laboratory of a pharmaceutical company, a clinic e.g. a medical or dental clinic.
  • the first liquid trap is adapted to allow liquid to pass therethrough when the flow rate of the liquid flowing into the entire liquid trap system is above a first predetermined flow rate.
  • the second liquid trap may be adapted to allow liquid to pass therethrough when the flow rate of liquid flowing in the liquid trap system is above a second predetermined flow rate.
  • the second predetermined flow rate may be larger than the first predetermined flow rate.
  • the flow rate through the individual liquid trap may be keep at a higher flow rate. This is desirable as low flow rates increases the risk of sedimentation and deposition of particles and grease.
  • the flow rate at which the second liquid trap opens is 20 percent higher than the flow rate at which the first liquid trap opens, such as 30 percent higher, such as 40 percent higher, such as 50 percent higher, such as 75 percent higher, such as 100 percent higher.
  • the first liquid trap may be adapted to open at the lowest possible flow rate - e.g. flow rates below 0.01 litres per second while the second liquid trap remains closed unless the flow rate exceeds 0.4 litres per second. The result is that while flow rate is below 0.4 litres per second, any liquid which flows into the liquid trap system is directed through the first liquid trap. It will be appreciated that if both liquid traps open at the same, the flow rate in each of the two liquid traps would be lower (i.e. 50 percent lower if the capacity of the two liquid traps is identical) as the total amount of water would be divided between both the liquid traps.
  • both the liquid traps When in the example the flow rate exceeds 0.4 litres per second both the liquid traps will open and thus the flow rate in each of the two liquid traps will be reduced. However, if the dynamic flow of liquid through the second liquid trap cannot maintain the second liquid trap in its open state, the second liquid trap will close again.
  • the capacity of the two liquid traps is identical, i.e. the maximum flow rate in the two liquid traps is the same for the two liquid traps.
  • the system may be designed such that when the second liquid trap opens the flow rate in the first liquid traps remains at its maximum, whereby the flow of liquid in the second liquid trap will start at a flow rate lower than 50 percent of the flow rate of all liquid flowing into the entire liquid trap system.
  • each of different liquid traps may be adapted to allow liquid to pass at different flow rates of liquid flowing into the entire liquid trap system.
  • the liquid passes through the first liquid trap while being prevented form passing through the second liquid trap, if a flow rate of liquid flowing into the entire liquid trap system is below a predetermined threshold.
  • liquid passes through both liquid traps if said flow rate is above the predetermined threshold, such that a first part of the liquid passes through the first liquid trap while a second part of the liquid passes through the second liquid trap.
  • the first and/or the second liquid trap comprises a locking system with a locking member which is adapted to be moved between a locking position in which it prevents flow of liquid in the upstream direction and an open position in which it allows flow of liquid in the downstream direction.
  • the locking member may be arranged to be biased into the locking position in such a way that the locking member is forced away from the locking position (e.g. by gravity) when a predetermined amount of liquid is provided above the locking member.
  • the locking system is the below described buoyancy system and the locking member is its corresponding buoyancy member.
  • the locking system is the below described elastic system and the locking member is its corresponding blocking member.
  • At least one of the first and the second liquid traps comprises a buoyancy system, each of which defines a well with an inlet and an outlet, and a buoyancy member is provided in the well such that when a predetermined amount of liquid is accommodated in the well, the inlet of the well is closed by the buoyancy member due to the buoyancy thereof, and such that the buoyancy member is forced away from the inlet by gravity when a predetermined amount of liquid is provided above the buoyancy member.
  • One advantage of providing a buoyancy member is that the systems ability to prevent backflow of liquid in an upstream direction is improved. The reason being that an increasing pressure causes the seal between the inlet and the buoyancy member to be improved, as the two are forced towards each other with an even larger force.
  • the effect of the improved seal is that the liquid trap system may be able to withstand a pressure corresponding to a water column of 5 meters, such as 8 meters, such as 10 meters, such as 12 meters, such as 15 meters, such as 20 meters, such as 30 meters.
  • liquid trap which prevents, back flow of liquid e.g. by means of a buoyancy member, it may be ensured that liquid flowing out of one of the liquid traps does not flowupstream in to another of the liquid traps. This is especially desirable if this other liquid trap is fluidly connected to a house hold appliance (provided upstream relative to the liquid trap) which would be damaged by such a back flow of liquid.
  • the present invention reduces the risk of terrorist attacks with gasses through the sewer system.
  • the inlet is defined by an annular lip which defines a circular opening. It will be appreciated that the inner diameter of opening must be smaller than the outer diameter of the buoyancy member, in order for the sealing effect to be achieved. If the diameter of the inlet is larger than the diameter of the buoyancy member, the latter may flow through the inlet, e.g. if the downstream pressure increases.
  • the annular lip may comprise an elastic material such as natural or synthetic rubber.
  • at least one of the first and second liquid traps comprises an elastic system, each of which defines a well with an inlet and an outlet, and a blocking member arranged to be biased into contact with the inlet by means of an elastic member so as to close the inlet. In the embodiment, the blocking member may be forced away from the inlet by gravity when a predetermined amount of liquid is provided above the blocking member.
  • the blocking member will improve the ability of the liquid trap system to resist/prevent backflow of liquid in the upstream direction as an increased pressure downstream relative to the liquid trap system will cause the blocking member and the inlet to be forced towards each other with an even larger force.
  • the spring constant of the elastic member determined the flow rate at which the liquid trap opens.
  • each of the first and second liquid traps comprises an elastic system.
  • the spring constant of elastic member of the second liquid trap is larger than the spring constant of the elastic member of the first liquid trap. Accordingly, the first and second liquid traps opens at different flow rates.
  • one of the liquid traps may comprise a buoyancy member while another of the liquid traps (in the same system) comprises an elastic member.
  • each of the liquid traps may comprise both a buoyancy member and an elastic member.
  • each the first and second liquid traps comprises a buoyancy system. In this system, the buoyancy of the buoyancy member of the first liquid trap may be lower than the buoyancy of the buoyancy member of the second liquid trap.
  • the liquid trap system comprises two buoyancy members with different buoyancy
  • the liquid trap with the buoyancy member having the lowest buoyancy will open before the other liquid trap (in which the buoyancy of the buoyancy member is larger).
  • the difference in buoyancy may be achieved by providing buoyancy members of different volumes e.g. the volume of the first buoyancy member may be smaller than the volume of the second buoyancy member.
  • the two buoyancy members may have identical volumes while the weights of the two buoyancy members are not identical.
  • the latter may be achieved by providing the two elements in different materials or by inserting a small weight in one of the buoyancy members, such a weight could be a liquid with a density which is higher than the density of the liquid passing through the liquid trap system.
  • the weight could be a metal material
  • the first and second liquid traps are arranged such that liquid flowing into the liquid trap system initially enters the first liquid trap and if the flow rate is above a predetermined flow rate, a first part of the liquid flows through the first liquid trap, while a second part of the liquid flows into the second liquid trap and further therethrough.
  • the liquid trap system may be designed such that the individual liquid traps may be used not only for draining a floor, but also for connecting a drain pips thereto. Accordingly, in one embodiment, the inlet of at least one of the first and second liquid traps is adapted by be fluidly connected to the outlet of a drain pipe.
  • the drain pipe may be a drain pipe of a sink, a bath tub, a dish washing machine, a washing machine or any other device which must be connected to a drain. It will be appreciated that the liquid trap system may take any form. As an example the liquid trap system may form part of a drain pipe e.g. such that it serves the function of connecting two drain pipes.
  • the buoyancy member defines an outer surface which is adapted to prevent or reduce the depositing of waste material. It will be appreciated that when deposition of material is prevented the risk of the clogging of the liquid trap system is reduced or even eliminated.
  • the outer surface of the buoyancy member defines a plurality of indentations.
  • the effect of the indentations is that in use the indentations will cause the buoyancy member to rotate when liquid flows through the liquid trap. The rotation will cause particles or grease deposited on the outer surface of the ball to be removed as the annular lip defining the opening of the liquid trap will scrape such material away.
  • the provision of indentations/dimples in the buoyancy member results in a delay in the separation of the boundary layer of water from the ball. The effect is that the liquid tends to "stick" to the buoyancy member 112, and thus reduces the risk of other material being deposited on the surface of the buoyancy member.
  • the buoyancy member on its outer surface is coated with a material which prevents depositing of material thereon.
  • a material which prevents depositing of material thereon.
  • PTFE polytetrafluoroetylen
  • any surface of the liquid trap system may be coated with the material (e.g. PTFE) so as to prevent deposition of material on any of its surfaces.
  • the material e.g. PTFE
  • Fig. 1 discloses a liquid trap system according to the present invention
  • Fig. 2 discloses flow of water into the liquid trap system
  • Fig. 3 discloses prevention of back flow in the liquid trap system
  • Fig. 4 discloses a drain pipe connected to the liquid trap system according to the present invention
  • Figs. 5-6 disclose use of the liquid trap system when a drain pipe is connected to the liquid trap system
  • Fig. 7 discloses an alternative arrangement of the outlet
  • Fig. 8 discloses the buoyancy member according an embodiment of the invention.
  • Fig. 1 discloses a liquid trap system 100 in the form of a floor drain.
  • the liquid trap system may take any other form e.g. the liquid trap system may form part of a waste pipe.
  • the liquid trap system 100 defines a first liquid trap 102' and a second liquid trap 102". Both liquid traps 102',102" are provided below the upper surface 104 of the liquid trap system 100 which is designed such that when the liquid trap system 100 is mounted in the floor, the upper surface 104 is at the same level as the upper surface of the floor (not visible in the figure).
  • the upper surface 104 encircles the main inlet 101 of the liquid trap system 100.
  • the system 100 defines a main outlet 103.
  • the liquid traps are retained relative to the liquid trap system 100 by means of a retaining ring 107, which is permanently or detachably fastened to the liquid trap system 100.
  • this detachably attachment may be achieved by means of a threaded or a snap-lock connection. It will be appreciated that the ability to withstand back pressure (back flow of water) is partly determined by said (permanently or detachably) fastening of the retaining ring 107.
  • Each of the liquid traps 102',102" defines a well 106',106" with an inlet 108',108" and an outlet HO',110".
  • an buoyancy member 112',112" is provided which - when a liquid (e.g. waste water) is provided in the liquid trap 102',102" - is forced into contact with an annular lip 114',114".
  • Each annular lip 114',114" defines a passage with an inner diameter.
  • the inner diameter of the passage is smaller than the diameter of the respective buoyancy member 112',112", and thus the buoyancy of the buoyancy member 112',112" causes the buoyancy member 112 to be forced into contact with the annular lip 114',114", so as to close the respective liquid trap 102',102".
  • the well 106',106" forms part of the water trap 102',102" whereby water (or any other liquid) entering the well 106',106" is accommodated in the well 106',106" such that gasses are prevented from passing in an upstream direction inside the liquid trap 102',102".
  • odours and bacteria located downstream relative to the liquid trap 102',102" are prevented from passing through the liquid trap 102',102".
  • the vertical position of the rim 116', 116" determines the vertical position of the upper surface (indicated by dotted line 117) of the liquid contained tin the wells 106',106".
  • the aforementioned relative position determines the minimum distance which the buoyancy member 112',112" is submerged under the water level, and thus the force exerted by the buoyancy member 112',112" on the annular lip 114',114". As this force is demining for the ability of the water traps to prevent back flow i.e. flow of water in an upstream direction, it may is some embodiments be desirable to position the annular lip 114',114" as far below the rim 116',116" as possible, while still allowing the buoyancy member 112', 112" to move during downstream flow of water in the system.
  • the difference is at least 3 millimetres, such as at least 5 millimetres, such as at least 10 millimetres, such as at least 15 millimetres, such as at least 20 millimetres.
  • the difference is chosen such that the water traps may prevent backflow of water, even if the water pressure in the liquid system downstream from the liquid traps is at least 0.5 bar, such as at least 1 bar, such as at least 1.5 bar, such as at least 2 bar, such as at least 2.5 bar, such as at least 3.0 bar, such as at least 3.5 bar or 4 bar.
  • the wall 118',118" terminates in a lower surface 120',120" which when liquid is provided in the well is covered with liquid. It will be appreciated that the distance from the lower surface 120',120" of the wall 118',118" to the upper surface (the water/liquid level) of the liquid accommodated in the well (not shown) also is a determining factor in relation to the pressure the liquid trap system 100 may be subjected to in the downstream direction while still preventing odours and bacteria from flowing in the upstream direction.
  • Fig. 2 discloses the use of the liquid trap system 100.
  • a many of the reference numbers present in Fig. 1 have not been indicated. However, as the two figures are identical (except from the arrows indicating flow), the reference numbers of fig. 1 also applies to Fig. 1.
  • the first and second liquid traps 102',102" are arranged such with respect to each other that liquid flowing into the liquid trap system 100 will initially flow into the well 106' of the first liquid trap 102' (indicated by arrows 121). This will cause the liquid to be collected in the inlet area 122' of the first well 106'. When the weight of the liquid exceeds a predetermined threshold, the liquid will cause the buoyancy member 112' to be forced downwards and thus out of engagement with the annular lip 114'. This will cause the first liquid trap 102' to open whereby the liquid will flow though the first liquid trap 102'.
  • the liquid contained in the first inlet area 122' will flow over the separation wall 124, which separates the first inlet area 122' of the first liquid trap 102' and the second inlet area 122" of the second liquid trap 102". This overflow of liquid is indicated by arrow 126.
  • the second liquid trap 102" will open when the weight of the liquid contained in the second inlet area 122" exceeds a predetermined threshold. In this situation the liquid will flow not only through the first liquid trap 102', but also through the second liquid trap 102".
  • FIG. 3 illustrates that a situation with increasing pressure (indicated by arrows 125) in the area downstream relative to the liquid trap system 100.
  • the provision of the buoyancy members 112 causes the liquid trap system 100, as the buoyancy of the buoyancy members 112 causes these members 112 to abut the annular lip 114 such that backflow of water is prevented.
  • the buoyancy of the buoyancy members 112 is indicated by arrows 127 In Figs.
  • a drain pipe 128 has been connected to the second liquid trap 102" by means of a rubber manifold 130, which in the embodiment of the figures is designed such that that it defines a wide part 132 and a narrow part 134.
  • the inner diameter of the wide part corresponds to the outer diameter of the drain pipe 128 such that the drain pipe 128 may be inserted into the wide part 132 whereby a seal is defined between the drain pipe 128 and the rubber manifold 130.
  • the outer diameter of the narrow part 134 corresponds to the inner diameter of the inlet area 122" of the second liquid trap 102", thus allowing the rubber manifold 130 to be inserted into the inlet area 122" whereby a seal is defined between the rubber manifold 130 and the inlet area 122". Due to the seals, overflow of water from the first inlet area 122' to the second inlet area 122" is prevented.
  • the first liquid trap 102' of the liquid trap system 100 of Figs. 4-6 serves as a floor drain and thus liquid (e.g. water) provided on the floor will flow into the first liquid trap 102' as is indicated by arrow 121, and continue further out of the main outlet 103 of the liquid trap system 100. This flow is indicated by arrows 125 in Fig. 6.
  • the buoyancy of the buoyancy member 112" prevents the inflowing water from entering the drain pipe 128 in an upstream direction. Thus any house hold appliance fluidly connected to the drain pipe 128 is prevented from being damaged by liquid flowing into the appliance from the drain pipe.
  • Fig. 7 discloses yet another embodiment of the invention in which the main outlet is provided in the bottom of the liquid trap system 100.
  • Fig. 8 discloses a buoyancy member 112 which defines an outer surface adapted to prevent or reduce the depositing of waste material due to the provision of indentations 136.
  • the indentations 136 will cause the buoyancy member 112 to rotate relative to the annular lip 114 whereby any waste deposited on the outer surface is scraped away by the annular lip

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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)
  • Sink And Installation For Waste Water (AREA)

Abstract

L'invention porte sur un système de piégeage de liquide (100), qui est adapté pour permettre à un liquide de traverser le système de piégeage de liquide dans une direction aval tout en empêchant des gaz de traverser le système de piégeage de liquide dans une direction amont. Le système de piégeage de liquide comprend au moins deux pièges à liquide (102', 102'').
PCT/EP2010/064150 2009-09-25 2010-09-24 Système de piégeage de liquide et scellement étanche vis-à-vis des odeurs WO2011036252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09171390.9A EP2305906B1 (fr) 2009-09-25 2009-09-25 Siphon
EP09171390.9 2009-09-25

Publications (1)

Publication Number Publication Date
WO2011036252A1 true WO2011036252A1 (fr) 2011-03-31

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ID=41785693

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Application Number Title Priority Date Filing Date
PCT/EP2010/064150 WO2011036252A1 (fr) 2009-09-25 2010-09-24 Système de piégeage de liquide et scellement étanche vis-à-vis des odeurs

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Country Link
EP (1) EP2305906B1 (fr)
DK (1) DK2305906T3 (fr)
TW (1) TWI551752B (fr)
WO (1) WO2011036252A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2743412B1 (fr) 2012-12-11 2015-11-18 Khaled Jafar Al-Hasan Ensemble de drain
NO337435B1 (no) * 2013-12-17 2016-04-11 Skorga Innovation As Sluk

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026317A (en) * 1972-08-28 1977-05-31 Lars Ekstrom Waterseal
WO1987000880A1 (fr) * 1985-08-09 1987-02-12 Soederstroem Gert Dispositif de securite
EP0494060A1 (fr) * 1991-01-03 1992-07-08 Gert Söderström Elément pour bouche d'écoulement
EP2033557A2 (fr) * 2007-08-23 2009-03-11 Lintec BVBA Système d'évacuation automatique pour eaux usées
FR2923503A1 (fr) * 2007-11-09 2009-05-15 Farhooman Davoudi Receveur a encastrer avec evacuation integree extra-plate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001026958A (ja) * 1999-07-14 2001-01-30 Yoshiya Kozono 排水管用通気装置
CN2789323Y (zh) * 2005-01-17 2006-06-21 贺传政 侧墙排水地漏

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026317A (en) * 1972-08-28 1977-05-31 Lars Ekstrom Waterseal
WO1987000880A1 (fr) * 1985-08-09 1987-02-12 Soederstroem Gert Dispositif de securite
EP0494060A1 (fr) * 1991-01-03 1992-07-08 Gert Söderström Elément pour bouche d'écoulement
EP2033557A2 (fr) * 2007-08-23 2009-03-11 Lintec BVBA Système d'évacuation automatique pour eaux usées
FR2923503A1 (fr) * 2007-11-09 2009-05-15 Farhooman Davoudi Receveur a encastrer avec evacuation integree extra-plate

Also Published As

Publication number Publication date
TWI551752B (zh) 2016-10-01
TW201116676A (en) 2011-05-16
EP2305906A1 (fr) 2011-04-06
DK2305906T3 (en) 2017-01-30
EP2305906B1 (fr) 2016-03-09

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