EP1896668B1 - Verfahren und system zum entladen eines abfallstroms aus einer toilette und siphon-installation zur verwendung damit - Google Patents

Verfahren und system zum entladen eines abfallstroms aus einer toilette und siphon-installation zur verwendung damit Download PDF

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Publication number
EP1896668B1
EP1896668B1 EP06757807A EP06757807A EP1896668B1 EP 1896668 B1 EP1896668 B1 EP 1896668B1 EP 06757807 A EP06757807 A EP 06757807A EP 06757807 A EP06757807 A EP 06757807A EP 1896668 B1 EP1896668 B1 EP 1896668B1
Authority
EP
European Patent Office
Prior art keywords
toilet
waste flow
liquid
discharge pipe
accelerated
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.)
Not-in-force
Application number
EP06757807A
Other languages
English (en)
French (fr)
Other versions
EP1896668A1 (de
Inventor
Robertus Cornelis Wilhelmus Maria Bente
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.)
Wisa BV
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Wisa BV
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Publication date
Application filed by Wisa BV filed Critical Wisa BV
Publication of EP1896668A1 publication Critical patent/EP1896668A1/de
Application granted granted Critical
Publication of EP1896668B1 publication Critical patent/EP1896668B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/20—Siphon pipes or inverted siphons

Definitions

  • the invention relates to a method for discharging a waste flow which consists of liquid and solid parts and comes from the flushing of a toilet, wherein the waste flow is accelerated at least once, and wherein prior to acceleration at least a part of the liquid is separated from the waste flow, and only this separated liquid is accelerated and fed back again to the waste flow.
  • a method for discharging a waste flow which consists of liquid and solid parts and comes from the flushing of a toilet, wherein the waste flow is accelerated at least once, and wherein prior to acceleration at least a part of the liquid is separated from the waste flow, and only this separated liquid is accelerated and fed back again to the waste flow.
  • a drawback of the known method is that the flow increaser must be given a relatively voluminous form in order to ensure a sufficient capacity, and thus a sufficiently great acceleration of the waste flow, and to also prevent blockage by solid parts which do after all remain for some time in the flow increaser.
  • a flow increaser is for instance marketed at the moment by applicant under the name "Gustavsberg's Water Saving System", which is intended to be incorporated in a shared discharge pipe of a number of households.
  • This known flow increaser is provided with a relatively narrow but high tank which is so large that it is only suitable for application in high-rise projects.
  • a method of applicant is also known for discharging a waste flow which is described in WO 98/03743 A , and wherein use is made of a flow increaser with a relatively flat structure which is intended for installation in the crawl space of low-rise residential buildings. While this flow increaser is lower than the above described model, it is also wider so that a relatively large amount of space must also be left clear therefor. Furthermore, as a result of the low structure and the associated large surface area, special hydrodynamic measures are necessary in this flow increaser in order to ensure that an adequate siphoning action is still obtained when there is a small rise in the liquid level.
  • both the known types of flow increaser have the drawback that their operation can be very adversely affected, particularly by fat residues which are for instance present in waste water from bathrooms or kitchens. Such fat residues are deposited in the flow increaser when the waste flow is standing still therein and adhere strongly to all surfaces so that they are not readily flushed away. Such fat residues ultimately result in (partial) clogging of the flow increaser, whereby the flow speed in the whole discharge system can become insufficient to ensure a reliable transport, particularly of the solid parts, to the sewage system.
  • WO 00/08267 A discloses a method for discharging a waste flow consisting of liquid and solid parts having the features of the preamble of claim 1. This method is performed in an accelerator or flow increaser that is arranged around a vertical discharge pipe. At least a part of the liquid flowing along the walls of the pipe is separated from the waste flow and flows into the accelerator, which comprises a siphon installation. This siphon installation debouches in the vertical discharge pipe. Liquid is collected in the siphon installation until it overflows, which will cause the entire contents of the siphon installation to be emptied into the discharge pipe, thus flushing away all solid parts in the pipe. This document does not indicate where the accelerator is located in relation to the toilet.
  • the prior art document US 4 242 765 A discloses a waste disposal system and a method for its use.
  • the system includes a toilet and an underfloor holding tank that is in communication with the toilet bowl.
  • the toilet is flushed with just enough fluid to transport waste to the holding tank.
  • the holding tank accumulates waste, flush fluid and waste fluid from uther sources until sufficient wastes accumulate to actuate a valve between the holding tank and a sewer.
  • the invention now has for its object to provide a method of the above described type, wherein the stated drawbacks do not occur. According to the invention this is achieved in a method according to claim 1.
  • the flow increaser can also be embodied very compactly since it only has to deal with the waste flow from the toilet. In addition, the risk of clogging of the flow increaser is considerably reduced because fat residues are no longer carried therethrough.
  • this flow increaser By guiding only that part of the waste flow which actually contributes toward the acceleration, i.e. the liquid, through the flow increaser, this flow increaser can be given a considerably more compact form.
  • the response behaviour of the flow increaser is in this way improved because it will no longer be influenced by the presence of solid parts in the flow increaser, while the acceleration caused by the flow increaser moreover becomes reproducible.
  • the separation can be performed most effectively during a vertical movement of the waste flow, while the horizontal feedback ensures that the total height of the path where the separation takes place remains limited.
  • the waste flow is preferably accelerated by means of a siphoning operation, wherein the waste flow is collected and only accelerated after reaching a determined volume.
  • Use can hereby be made for the acceleration of a simple system without moving parts which is operated by the waste flow itself. Furthermore, the effect of the acceleration is thus enhanced by accumulating the waste flow. This is particularly the case when the volume required for the acceleration is reached only after at least three successive flushes of the toilet.
  • ULFT Ultra-Low Flush Toilet
  • the invention further relates to a system for discharging a waste flow which consists of liquid and solid parts and which comes from the flushing of a toilet adapted to perform the above described method.
  • the prior art discharge system disclosed in WO 00/08267 comprises the features of the preamble of claim 4.
  • the discharge system according to the present invention is characterized by the characterising portion of claim 4. In view of the limited space available in the vicinity of a toilet, the siphon installation can thus be built in under the toilet.
  • the volume at which the siphon installation becomes active can, as stated, advantageously amount to more than twice the flush volume of the toilet.
  • the discharge system is provided with means placed between the discharge pipe and the siphon installation for separating out of the waste flow and feeding to the siphon installation at least a part of the liquid, and means connected to the siphon installation for feeding the accelerated liquid back again to the waste flow.
  • the siphon installation is preferably provided with a feed opening connected to a standing part of the discharge pipe, and the separating means comprise an inflow edge at least partially bounding the feed opening and connecting smoothly onto a wall of the standing part of the discharge pipe.
  • the liquid can be separated very easily, making use of the fact that the liquid will flow for the most part along the walls of the standing part of the discharge pipe, while the solid parts will usually drop downward through the middle of the pipe.
  • the siphon installation can be arranged to the side of the standing part of the discharge pipe.
  • the standing part of the discharge pipe and/or the siphon installation is formed integrally with the toilet.
  • the toilet can thus be placed with a part of the discharge pipe and the siphon installation by a single fitter in one operation without further operations being necessary elsewhere in the discharge system. This saves time and cost and moreover reduces the chance of errors.
  • a toilet 1 comprises a toilet bowl 2, a cistern 4 connected thereto via a flush pipe 3 and a liquid trap 6 connecting to an outlet 5 of bowl 2.
  • cistern 4 has a very small volume of for instance 2.5 litres, whereby toilet 1 can be characterized as an Ultra-Low Flush Toilet (ULFT).
  • Liquid trap 6 has an outflow opening 7 to which connects a system 8 for discharging a waste flow F coming from toilet 1.
  • This waste flow F consists of liquid L and solid parts S.
  • This discharge system 8 comprises a discharge pipe 9 with a standing part 10 and a lying part 11 ( fig. 1 ).
  • Discharge system 8 is therefore provided with means 12 for accelerating waste flow F. These accelerating means 12 are arranged according to the invention directly at the outflow opening 7 of liquid trap 6.
  • accelerating means 12 comprise a siphon installation arranged round and adjacently of standing part 10 of discharge pipe 9.
  • the siphon installation and the standing conduit part 10 can herein be formed integrally with toilet 1 or be mounted on toilet 1 prior to delivery, so that the fitting operations remain limited to placing of toilet 1 and connection thereof to the lying part 11 of discharge pipe 9.
  • means 13 are arranged on the inflow side of the siphon installation for separating at least a part of the liquid L from waste flow F.
  • These separating means 13 here comprise an inflow edge 15 fitting smoothly onto a wall 14 of the standing conduit part 10 and inclining radially outward, and a deflecting edge 16 which is located opposite inflow edge 15 and which inclines radially inward as seen in the dropping direction ( fig. 2 ).
  • These two edges 15, 16 bound an annular feed opening 17 of the siphon installation.
  • the siphon installation itself comprises a tank 18 which is connected to feed opening 17 and provided with a siphon conduit 19 which debouches on the underside of tank 18.
  • the volume of tank 18 is such that a number of flushes can be stored therein in order to enable a considerable quantity of flushing liquid to be introduced into the discharge pipe at one time.
  • Tank 18 is for instance dimensioned such that 6 litres of flushing liquid are delivered, since many pipe systems are dimensioned for this quantity.
  • Siphon conduit 19 is formed by a riser pipe 20 which is connected over a bend part 21 to a drop pipe 22.
  • a pipe part 23 Arranged on the underside of drop pipe 22 is a pipe part 23 which is curved in a U-shape and which functions as a liquid seal, but which is dimensioned such that it is open in the rest position.
  • This U-shaped pipe part 23 functioning as liquid seal debouches, as stated, on the underside of tank 18 into discharge pipe 9, this in the lying part 11 thereof. Because the feed side and the discharge side of the siphon installation communicate with each other via discharge pipe 9, no vent line is required therebetween as in conventional flow increasers.
  • discharge system 8 The operation of discharge system 8 is now as follows.
  • the waste flow F coming therefrom will reach discharge pipe 9 via outlet 5, liquid trap 6 and outflow opening 7.
  • the waste flow F flows through the standing conduit part 10 to the lying conduit part 11.
  • the liquid L In standing part 10 the liquid L here flows mainly along the pipe wall 14, while the solid parts S drop through the middle of pipe 9.
  • the liquid L then follows the inflow edge 15 which connects smoothly onto pipe wall 14, and thus flows into tank 18 where in the first instance it is collected ( fig. 3 ).
  • the solid parts S drop together with a small part of the liquid L further through the middle of pipe 9. Because there is thus only little liquid available for further transport of the solid parts S, these will accumulate at the beginning of the lying conduit part 11.
  • With each flushing the liquid level increases further in tank 18 and in riser pipe 20 until it eventually reaches bend part 21.
  • the waste flow by being accelerated immediately upon leaving the toilet or at least the liquid present therein being accelerated, can thus be transported in reliable manner through the discharge pipe to a sewer connection despite the relatively small volume of flushing water flowing through the toilet per flush.
  • the flow increaser used herein can further be given a relatively small form, while the risk of blockage by fat residues is wholly obviated. Furthermore, due to the structural integration of the accelerating means with the toilet, the installation thereof can be considerably simplified.

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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)
  • Sanitary Device For Flush Toilet (AREA)

Claims (9)

  1. Verfahren zum Ableiten eines Abwasserstromes (F), der aus Flüssigkeit (L) und festen Teilen (S) besteht und vom Spülen einer Toilette (1) stammt, wobei der Abwasserstrom (F) mindestens einmal beschleunigt wird, und wobei vor dem Beschleunigen mindestens ein Teil der Flüssigkeit (L) von dem Abwasserstrom (F) getrennt wird und nur die getrennte Flüssigkeit (L) beschleunigt und wieder in den Abwasserstrom (F) zurückgespeist wird, wobei die Beschleunigung der Flüssigkeit (L) stattfindet, wenn sie aus der Toilette (1) herausströmt (1), oder unmittelbar danach, dadurch gekennzeichnet, dass der Abwasserstrom (F), wenn er aus der Toilette (1) herausströmt oder unmittelbar danach, zunächst in einer im Wesentlichen vertikalen Bahn und nach einer Biegung in einer im Wesentlichen horizontalen Bahn abgeleitet wird, wobei die Trennung und die Beschleunigung in dem im Wesentlichen vertikalen Teil der Bahn stattfinden und die beschleunigte Flüssigkeit (L) in dem im Wesentlichen horizontalen Teil der Bahn zurückgespeist wird.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass der Abwasserstrom (F) mittels eines Absaugvorgangs beschleunigt wird, wobei der Abwasserstrom (F) gesammelt und erst nach dem Erreichen eines bestimmten Volumens beschleunigt wird.
  3. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass das für die Beschleunigung erforderliche Volumen erst nach mindestens drei aufeinanderfolgenden Spülungen der Toilette (1) erreicht wird.
  4. System (8) zum Ableiten eines Abwasserstromes (F), der aus Flüssigkeit (L) und festen Teilen (S) besteht und von dem Spülen einer Toilette (1) stammt, aufweisend mindestens ein Ableitungsrohr (9) für den Abwasserstrom (F), das mit einer Abflussöffnung (7) der Toilette (1) verbunden ist, und mit dem Ableitungsrohr (9) verbundene Mittel (12) zum Beschleunigen des Abwasserstromes (F), wobei die Beschleunigungsmittel (12) eine Siphoneinrichtung aufweisen, die angepasst ist, um den Abwasserstrom (F) zu sammeln, und die nur dann zum Beschleunigen davon aktiv wird, wenn ein vorbestimmtes Volumen erreicht wird, wobei die Beschleunigungsmittel (12) an der Position von oder nahe bei der Abflussöffnung (7) der Toilette (1) positionierbar sind, dadurch gekennzeichnet, dass das Ableitungsrohr (9) einen liegenden Teil (11) aufweist, die Siphoneinrichtung eine verhältnismäßig flache Form hat und angepasst ist, um die beschleunigte Flüssigkeit (L) in den liegenden Teil (11) des Ableitungsrohres (9) zurückzuführen.
  5. Ableitungssystem (8) gemäß Anspruch 4, dadurch gekennzeichnet, dass das Volumen, bei dem die Siphoneinrichtung aktiv wird, mehr als das Zweifache des Spülvolumens der Toilette (1) beträgt.
  6. Ableitungssystem (8) gemäß Anspruch 4 oder 5, gekennzeichnet durch zwischen dem Ableitungsrohr (9) und der Siphoneinrichtung angeordnete Mittel (13) zum Trennen des Abwasserstroms (F) und Einspeisen von zumindest einem Teil der Flüssigkeit (L) in die Siphoneinrichtung, und durch mit der Siphoneinrichtung verbundene Mittel zum erneuten Einspeisen der beschleunigten Flüssigkeit (L) in den Abwasserstrom (F).
  7. Ableitungssystem (8) gemäß Anspruch 6, dadurch gekennzeichnet, dass die Siphoneinrichtung mit einer Zuführöffnung (17) versehen ist, die mit einem aufrechten Teil (10) des Ableitungsrohres (9) verbunden ist, und die Trennmittel (13) einen Einströmrand (15) aufweisen, der zumindest teilweise die Zuführöffnung (17) begrenzt und nahtlos an eine Wand (14) des aufrechten Teils (10) des Ableitungsrohres (9) angeschlossen ist.
  8. Ableitungssystem (8) gemäß Anspruch 7, dadurch gekennzeichnet, dass die Siphoneinrichtung an der Seite des aufrechten Teils (10) des Ableitungsrohres (9) angeordnet ist.
  9. Ableitungssystem (8) gemäß Anspruch 7 oder 8, dadurch gekennzeichnet, dass der aufrechte Teil (10) des Ableitungsrohres (9) und / oder die Siphoneinrichtung einstückig mit der Toilette (1) ausgebildet ist.
EP06757807A 2005-06-27 2006-06-23 Verfahren und system zum entladen eines abfallstroms aus einer toilette und siphon-installation zur verwendung damit Not-in-force EP1896668B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1029345A NL1029345C2 (nl) 2005-06-27 2005-06-27 Werkwijze en systeem voor het afvoeren van een afvalstroom uit een toilet en daarbij toe te passen hevelinstallatie.
PCT/NL2006/000309 WO2007001168A1 (en) 2005-06-27 2006-06-23 Method and system for discharging a waste stream from a toilet and siphon installation for use therewith

Publications (2)

Publication Number Publication Date
EP1896668A1 EP1896668A1 (de) 2008-03-12
EP1896668B1 true EP1896668B1 (de) 2012-04-25

Family

ID=36477324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06757807A Not-in-force EP1896668B1 (de) 2005-06-27 2006-06-23 Verfahren und system zum entladen eines abfallstroms aus einer toilette und siphon-installation zur verwendung damit

Country Status (4)

Country Link
EP (1) EP1896668B1 (de)
AT (1) ATE555256T1 (de)
NL (1) NL1029345C2 (de)
WO (1) WO2007001168A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2634081C (en) * 2006-01-12 2014-02-25 Caroma Industries Limited Keeping sewer drainlines clear with low flush toilets or cisterns
DE102016000041A1 (de) * 2016-01-04 2017-07-06 Deutsche Bahn Fernverkehr Ag Sanitäreinrichtung für Fahrzeuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242765A (en) * 1979-08-17 1981-01-06 Russell Joyce A Water saving commode
AU3786397A (en) * 1996-07-24 1998-02-10 Wisa B.V. Siphon device
NL1009816C2 (nl) * 1998-08-06 2000-02-15 Wisa Bv Werkwijze en systeem voor het afvoeren van een afvalstroom en daarbij toe te passen hevelinstallatie.

Also Published As

Publication number Publication date
NL1029345C2 (nl) 2006-12-28
EP1896668A1 (de) 2008-03-12
ATE555256T1 (de) 2012-05-15
WO2007001168A1 (en) 2007-01-04

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