EP2305906A1 - Geruchverschluss - Google Patents

Geruchverschluss Download PDF

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Publication number
EP2305906A1
EP2305906A1 EP09171390A EP09171390A EP2305906A1 EP 2305906 A1 EP2305906 A1 EP 2305906A1 EP 09171390 A EP09171390 A EP 09171390A EP 09171390 A EP09171390 A EP 09171390A EP 2305906 A1 EP2305906 A1 EP 2305906A1
Authority
EP
European Patent Office
Prior art keywords
liquid
liquid trap
buoyancy
trap system
traps
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.)
Granted
Application number
EP09171390A
Other languages
English (en)
French (fr)
Other versions
EP2305906B1 (de
Inventor
Gert Söderström
Johnny Söderström
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.)
Soderstrom Gert Wilhelm
Original Assignee
Soderstrom Gert Wilhelm
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 Soderstrom Gert Wilhelm filed Critical Soderstrom Gert Wilhelm
Priority to DK09171390.9T priority Critical patent/DK2305906T3/da
Priority to EP09171390.9A priority patent/EP2305906B1/de
Priority to PCT/EP2010/064150 priority patent/WO2011036252A1/en
Priority to TW099132548A priority patent/TWI551752B/zh
Publication of EP2305906A1 publication Critical patent/EP2305906A1/de
Application granted granted Critical
Publication of EP2305906B1 publication Critical patent/EP2305906B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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, 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.
  • 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 to close the liquid trap, as is described in further detail below.
  • 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.
  • 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.
  • 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.
  • the 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.
  • 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.
  • 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.
  • 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.
  • 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 resilient element 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 resilient element of the second liquid trap is larger than the spring constant of the resilient element of the first liquid trap. Accordingly, the first and second liquid traps opens at different flow rates.
  • each 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 and wherein the buoyancy of the buoyancy member of the first liquid trap is 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 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 flow 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.
  • liquid trap system may take any form.
  • 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 thy 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.
  • a material is polytetrafluoroetylen (PTFE) e.g. Teflon.
  • 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 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 110',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 relative position of the annular lip 114',114" and the rim 116',116" determines how close the buoyancy member 112',112" can be to the upper surface of the liquid.
  • the aforementioned relative position determined 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".
  • 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".
  • One advantage of providing two liquid traps 102',102" is that the overall height of the system may smaller than conventional systems (with the same ability to withstand a high pressure downstream the liquid traps).
  • 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
  • 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.
  • the buoyancy of the buoyancy prevents the inflowing water from entering 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 114.

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)
  • Sink And Installation For Waste Water (AREA)
EP09171390.9A 2009-09-25 2009-09-25 Geruchverschluss Active EP2305906B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK09171390.9T DK2305906T3 (en) 2009-09-25 2009-09-25 A liquid trap system; odour seal
EP09171390.9A EP2305906B1 (de) 2009-09-25 2009-09-25 Geruchverschluss
PCT/EP2010/064150 WO2011036252A1 (en) 2009-09-25 2010-09-24 A liquid trap system; odour seal
TW099132548A TWI551752B (zh) 2009-09-25 2010-09-27 液阱系統

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
EP2305906A1 true EP2305906A1 (de) 2011-04-06
EP2305906B1 EP2305906B1 (de) 2016-03-09

Family

ID=41785693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09171390.9A Active EP2305906B1 (de) 2009-09-25 2009-09-25 Geruchverschluss

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8720477B1 (en) 2012-12-11 2014-05-13 Khaled Jafar Al-Hasan Drain assembly
WO2015093972A1 (en) * 2013-12-17 2015-06-25 Rett Vvs As Drain

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 (en) * 1985-08-09 1987-02-12 Soederstroem Gert Safety device
EP0494060A1 (de) * 1991-01-03 1992-07-08 Gert Söderström Einsatzteil für Bodenablauf
EP2033557A2 (de) * 2007-08-23 2009-03-11 Lintec BVBA Automatisches Abwasserabführungssystem
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 (en) * 1985-08-09 1987-02-12 Soederstroem Gert Safety device
EP0494060A1 (de) * 1991-01-03 1992-07-08 Gert Söderström Einsatzteil für Bodenablauf
EP2033557A2 (de) * 2007-08-23 2009-03-11 Lintec BVBA Automatisches Abwasserabführungssystem
FR2923503A1 (fr) * 2007-11-09 2009-05-15 Farhooman Davoudi Receveur a encastrer avec evacuation integree extra-plate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8720477B1 (en) 2012-12-11 2014-05-13 Khaled Jafar Al-Hasan Drain assembly
EP2743412A1 (de) 2012-12-11 2014-06-18 Khaled Jafar Al-Hasan Abfluss
WO2015093972A1 (en) * 2013-12-17 2015-06-25 Rett Vvs As Drain
NO337435B1 (no) * 2013-12-17 2016-04-11 Skorga Innovation As Sluk

Also Published As

Publication number Publication date
TWI551752B (zh) 2016-10-01
EP2305906B1 (de) 2016-03-09
TW201116676A (en) 2011-05-16
DK2305906T3 (en) 2017-01-30
WO2011036252A1 (en) 2011-03-31

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