[go: up one dir, main page]

EP4248028B1 - Vacuum toilet and method of flushing a vacuum toilet - Google Patents

Vacuum toilet and method of flushing a vacuum toilet Download PDF

Info

Publication number
EP4248028B1
EP4248028B1 EP21798600.9A EP21798600A EP4248028B1 EP 4248028 B1 EP4248028 B1 EP 4248028B1 EP 21798600 A EP21798600 A EP 21798600A EP 4248028 B1 EP4248028 B1 EP 4248028B1
Authority
EP
European Patent Office
Prior art keywords
flushing
water line
transfer tank
flushing water
toilet bowl
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.)
Active
Application number
EP21798600.9A
Other languages
German (de)
French (fr)
Other versions
EP4248028A1 (en
Inventor
Peter Oremek
Michael NYCH
Daniel SCHEIBA
Dominik Samson
Matthias Autzen
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.)
Trainvac GmbH
Original Assignee
Trainvac GmbH
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 Trainvac GmbH filed Critical Trainvac GmbH
Publication of EP4248028A1 publication Critical patent/EP4248028A1/en
Application granted granted Critical
Publication of EP4248028B1 publication Critical patent/EP4248028B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore

Definitions

  • the present invention relates to a vacuum toilet that has a toilet bowl, a transfer tank and a flushing water container, as well as a method for flushing a vacuum toilet.
  • the flushing water container is designed and connected in such a way that when the toilet is operated, a flushing process is triggered in which, with the help of an overpressure applied to the flushing water container by a compressed air source, flushing water is conveyed from the container into the toilet bowl via a first flushing water line.
  • the transfer tank is designed and connected in such a way that, following the flushing process, suction material is sucked out of the toilet bowl into the transfer tank with the help of a negative pressure applied to the transfer tank.
  • Vacuum toilets are used, for example, as toilets in vehicles (such as rail vehicles, aircraft, watercraft, buses, etc.) and offer the possibility of using a vacuum to suck waste material from the toilet bowl into a transfer tank and then finally to transport it into a wastewater reservoir.
  • vehicles such as rail vehicles, aircraft, watercraft, buses, etc.
  • Such a vacuum toilet is made, for example, from DE 20 2002 101 760 U1 or from EP3047077B1
  • the vacuum toilet comprises a toilet bowl, a transfer tank and a flushing water container.
  • the flushing water container is designed and connected in such a way that when the toilet is operated, a flushing process is triggered in which, with the aid of an overpressure applied to the flushing water container by a compressed air source, flushing water is conveyed from the flushing water container via a first flushing water line into the toilet bowl.
  • the transfer tank is designed and connected in such a way that, following the flushing process, suction material from the toilet bowl is conveyed into the transfer tank with the aid of a negative pressure applied to the transfer tank. With such a vacuum toilet, impurities can accumulate in the transfer tank, which can eventually even lead to a blockage of the vacuum toilet.
  • a vacuum toilet system with a flush water tank is already known, which is connected on the inlet side to a compressed air source and a flush water source and is connected on the outlet side to a toilet bowl.
  • a toilet with a vacuum evacuation system is already known, with a toilet bowl and a waste water tank, with a shut-off valve between the outlet of the toilet bowl and the inlet of the tank.
  • DE202013009406U1 is a mobile sanitary unit, which is designed for the recycling of grey water.
  • a fresh water tank is connected to a fresh water consuming unit and a grey water discharge line from this unit is led to a grey water tank.
  • a line is led from the grey water tank to a grey water consuming unit and another line to a waste water tank.
  • a valve is arranged in the connecting line between the fresh water consuming unit and the grey water tank and another valve is arranged in the connecting line between the grey water tank and the waste water tank. It is not possible for the two valves to be opened at the same time.
  • a second flushing water line is provided which is fed by the first flushing water line.
  • This second flushing water line has a controllable valve which can release or block the flow of flushing water in the second flushing water line.
  • suction mass refers to the mass that is removed from the toilet bowl when it is flushed.
  • the suction mass can contain flushing water as well as faeces and other components.
  • the second flushing water line branches off from the first flushing water line via a T-piece connection.
  • the flushing water from the first flushing water line flows, for example, into the vertical branch of the T-piece and splits into two flushing water streams in the T-piece, with one flushing water stream, which continues to form the flushing water stream of the first flushing water line, flowing out, for example, through the left horizontal branch, and the second flushing water stream, which forms the flushing water stream of the second flushing water line, flowing out through the right horizontal branch of the T-piece.
  • the transfer tank has a flushing nozzle with several nozzle openings fed by the second flushing line.
  • This flushing nozzle device in the transfer tank ensures that as many and, ideally, all areas of the transfer tank's inner wall are flushed.
  • the first flush water line is also provided with a controllable valve.
  • the two controllable valves on the flush water lines can be controlled independently of one another. This allows the flush water flow to be directed via different paths. If the valve of the first flush water line is open and the valve of the second flush water line is closed, flush water can flow from the flush water container into the toilet bowl, but not into the transfer tank. If the valve of the first flush water line is closed and the valve of the second flush water line is open, flush water can flow into the transfer tank, but not into the toilet bowl. If both valves are open, flush water can flow into the transfer tank and into the toilet bowl.
  • controllable valve of the second flush water line is designed as a 3/2-way valve.
  • flush water can either flow from the first flush water line into a continuation of the first flush water line into the toilet bowl or from the first flush water line via the second flush water line into the transfer tank.
  • This control device is programmed to control the compressed air source and the controllable valve of the second flushing water line in such a way that the transfer tank is flushed under predefined conditions.
  • control device is configured to set as a predetermined condition to check the number of flushes of the toilet bowl after the last flush of the transfer tank. After a predetermined number of flushes, the control device controls the compressed air source and the controllable valve on the second flush water line in such a way that a separate flush is carried out for the transfer tank.
  • control device is designed to check the number of flushing processes of the toilet bowl after the last flushing of the transfer tank as a predetermined condition. After a predetermined number of flushing processes, the control device controls the compressed air source and the controllable valve on the second flushing water line in such a way that a flushing process for the transfer tank is carried out at the same time as the next flushing process of the toilet bowl.
  • control device is designed to check the expiration of a predetermined regular time interval as a predetermined condition. After expiration of this time interval, the control device controls the compressed air source and the controllable valve of the second flushing water line in such a way that a flushing process is carried out for the transfer tank.
  • the control device is set up to check as a predetermined condition whether a frost emptying signal is present for the vehicle.
  • the frost emptying signal is triggered, for example, before the end of the train's service life in order to empty all water-carrying lines and containers. If this signal is present, the control device controls the compressed air source and the controllable valve of the second flushing water line in such a way that a flushing process for the transfer tank is carried out with the flushing water that is drained.
  • the vacuum toilet comprises a toilet bowl 10, a transfer tank 12 and a flush water tank 14.
  • the flush water tank 14 has a level sensor B02 which is coupled to a valve Q06. If the level sensor B02 indicates that there is too little flush water in the flush water tank 14, the valve Q06 is opened and the flush water tank 14 is filled via a flush water line 20 coming from a fresh water reservoir.
  • the flush water tank 14 is designed and connected in such a way that a flushing process is triggered when the toilet is operated.
  • Compressed air is supplied via a compressed air line 22 coming from the compressed air source 21 via a flush valve Q01 and a valve 24 into the interior of the flush water tank. 14.
  • This transports flushing water from the flushing water tank 14 into the toilet bowl 10 via a first flushing water line 16.
  • the supply of compressed air to the flushing water tank 14 is stopped, whereupon the setting of the valve 24 changes. There is then still excess pressure in the flushing water tank 14.
  • the changed setting of the valve 24 makes the vent line 26 accessible, through which the excess pressure in the flushing water tank 14 can be released.
  • the transfer tank 12 is designed and connected in such a way that after the flushing process, the inlet valve Q05 is opened and suction mass is sucked out of the toilet bowl 10 into the transfer tank 12 using a negative pressure applied to the transfer tank 12. The inlet valve Q05 is then closed again and an overpressure is generated in the transfer tank 12. The outlet valve Q04 is then opened and the suction mass in the transfer tank 12 is pumped into a wastewater reservoir connected to the transfer tank 12 using the positive pressure applied to the transfer tank 12. The negative pressure or the positive pressure in the transfer tank 12 are controlled via the pressure valve Q02 and the vacuum valve Q03.
  • a second flushing water line 18 is connected so that it is fed by the first flushing water line 16.
  • the second flushing water line 18 has a controllable valve Q07 that can release or block the flow of flushing water in the second flushing water line 18.
  • the controllable valve Q07 opens the second flushing water line 18, flushing water is pumped into the transfer tank 12 and the transfer tank 12 is flushed.
  • the second flushing water line 18 branches off from the first flushing water line 16 via a T-piece connection 17.
  • the flushing water of the first flushing water line 16 flows, for example, into the vertical branch of the T-piece 17 and splits into two flushing water streams in the T-piece 17, with one flushing water stream, which continues to form the flushing water stream of the first flushing water line 16, flowing out, for example, through the left horizontal branch, and the second flushing water stream, which forms the flushing water stream of the second flushing water line 18, flowing out through the right horizontal branch of the T-piece 17.
  • FIG 2 an embodiment of the present invention is shown in which the first flush water line 16 is also provided with a controllable valve Q08.
  • the two controllable valves Q07 and Q08 can be controlled independently of one another. This allows the flush water flow to be directed via different paths. If the valve of the first flush water line Q08 is open and the valve of the second flush water line Q07 is closed, flush water can flow from the flush water container 14 into the toilet bowl 10, but not into the transfer tank 12. If the valve of the first flush water line Q08 is closed and the valve of the second flush water line Q07 is open, flush water can flow into the transfer tank 12, but not into the toilet bowl 10. If both valves Q07 and Q08 are open, flush water can flow into the transfer tank 12 and into the toilet bowl 10.
  • FIG 3 a vacuum toilet is shown in which the controllable valve of the second flush water line Q07 is designed as a 3/2-way valve.
  • flush water can either flow from the first flush water line 16 in a continuation of the first flush water line into the toilet bowl 10 or from the first flush water line 16 via the second flush water line 18 into the transfer tank 12.

Landscapes

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

Description

Die vorliegende Erfindung betrifft eine Vakuumtoilette, die ein Toilettenbecken, einen Transfertank und einen Spülwasserbehälter aufweist sowie ein Verfahren zum Spülen einer Vakuumtoilette. Der Spülwasserbehälter ist derart ausgebildet und angeschlossen, dass bei Betätigung der Toilette ein Spülvorgang ausgelöst wird, bei dem, mithilfe eines im Spülwasserbehälter durch eine Druckluftquelle angelegten Überdrucks, Spülwasser aus diesem über eine erste Spülwasserleitung in das Toilettenbecken befördert wird. Der Transfertank ist derart ausgebildet und angeschlossen, dass im Anschluss an den Spülvorgang Absaugmasse aus dem Toilettenbecken mithilfe eines an den Transfertank angelegten Unterdrucks in den Transfertank abgesaugt wird.The present invention relates to a vacuum toilet that has a toilet bowl, a transfer tank and a flushing water container, as well as a method for flushing a vacuum toilet. The flushing water container is designed and connected in such a way that when the toilet is operated, a flushing process is triggered in which, with the help of an overpressure applied to the flushing water container by a compressed air source, flushing water is conveyed from the container into the toilet bowl via a first flushing water line. The transfer tank is designed and connected in such a way that, following the flushing process, suction material is sucked out of the toilet bowl into the transfer tank with the help of a negative pressure applied to the transfer tank.

Vakuumtoiletten werden beispielsweise als Toiletten in Fahrzeugen (wie z.B. Schienenfahrzeugen, Flugzeugen, Wasserfahrzeugen, Bussen, etc.) eingesetzt und bieten die Möglichkeit, Absaugmasse mithilfe eines Vakuums aus dem Toilettenbecken in einen Transfertank abzusaugen und daraus schließlich in ein Abwasserreservoir weiterzuleiten.Vacuum toilets are used, for example, as toilets in vehicles (such as rail vehicles, aircraft, watercraft, buses, etc.) and offer the possibility of using a vacuum to suck waste material from the toilet bowl into a transfer tank and then finally to transport it into a wastewater reservoir.

Eine derartige Vakuumtoilette ist beispielsweise aus DE 20 2002 101 760 U1 oder aus EP3047077B1 bekannt. Die Vakuumtoilette umfasst ein Toilettenbecken, einen Transfertank und einen Spülwasserbehälter. Der Spülwasserbehälter ist derart ausgebildet und angeschlossen, dass bei Betätigung der Toilette ein Spülvorgang ausgelöst wird, bei dem, mithilfe eines im Spülwasserbehälter durch eine Druckluftquelle angelegten Überdrucks, Spülwasser aus diesem über eine erste Spülwasserleitung in das Toilettenbecken befördert wird. Der Transfertank ist derart ausgebildet und angeschlossen, dass im Anschluss an den Spülvorgang Absaugmasse aus dem Toilettenbecken mithilfe eines an den Transfertank angelegten Unterdrucks in den Transfertank abgesaugt wird. Bei einer solchen Vakuumtoilette können sich Verunreinigungen im Transfertank ansammeln, die schließlich sogar zu einer Verstopfung der Vakuumtoilette führen.Such a vacuum toilet is made, for example, from DE 20 2002 101 760 U1 or from EP3047077B1 The vacuum toilet comprises a toilet bowl, a transfer tank and a flushing water container. The flushing water container is designed and connected in such a way that when the toilet is operated, a flushing process is triggered in which, with the aid of an overpressure applied to the flushing water container by a compressed air source, flushing water is conveyed from the flushing water container via a first flushing water line into the toilet bowl. The transfer tank is designed and connected in such a way that, following the flushing process, suction material from the toilet bowl is conveyed into the transfer tank with the aid of a negative pressure applied to the transfer tank. With such a vacuum toilet, impurities can accumulate in the transfer tank, which can eventually even lead to a blockage of the vacuum toilet.

Aus FI110538B ist ein Vakuumtoilettensystem mit einem Spülwasserbehälter vorbekannt, der eingangsseitig an eine Druckluftquelle und eine Spülwasserquelle angeschlossen ist und ausgangsseitig an eine Toilettenschüssel angeschlossen ist.Out of FI110538B A vacuum toilet system with a flush water tank is already known, which is connected on the inlet side to a compressed air source and a flush water source and is connected on the outlet side to a toilet bowl.

Aus ES2366504A1 ist eine Toilette mit Vakuum-Evakuierungssystem vorbekannt, mit einer Toilettenschüssel und einem Abwassertank, wobei sich zwischen dem Auslass der Toilettenschüssel und dem Einlass des Tanks ein Absperrventil befindet.Out of ES2366504A1 A toilet with a vacuum evacuation system is already known, with a toilet bowl and a waste water tank, with a shut-off valve between the outlet of the toilet bowl and the inlet of the tank.

Aus DE202013009406U1 ist eine mobil einsetzbare Sanitäreinheit, vorbekannt, die zur Wiederverwertung von Grauwasser ausgebildet ist. Ein Frischwasserbehälter ist mit einer Frischwasser verbrauchenden Einheit verbunden und eine Grauwasserabführleitung dieser Einheit ist zu einem Grauwasserbehälter geführt. Vom Grauwasserbehälter ist eine Leitung zu einer Grauwasser verbrauchenden Einheit und eine weitere Leitung zu einem Abwasserbehälter geführt. Zwischen der Frischwasser verbrauchenden Einheit und dem Grauwasserbehälter ist ein Ventil in deren Verbindungsleitung angeordnet ist und ein weiteres Ventil ist in der Verbindungsleitung zwischen dem Grauwasserbehälter und dem Abwasserbehälter angeordnet ist. Ein gleichzeitiges Öffnen der beiden Ventile ist ausgeschlossen.Out of DE202013009406U1 is a mobile sanitary unit, which is designed for the recycling of grey water. A fresh water tank is connected to a fresh water consuming unit and a grey water discharge line from this unit is led to a grey water tank. A line is led from the grey water tank to a grey water consuming unit and another line to a waste water tank. A valve is arranged in the connecting line between the fresh water consuming unit and the grey water tank and another valve is arranged in the connecting line between the grey water tank and the waste water tank. It is not possible for the two valves to be opened at the same time.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Vakuumtoilette bereitzustellen, bei der die Verunreinigungen im Transfertank reduziert werden, um einer Verstopfung der Vakuumtoilette vorzubeugen.It is therefore an object of the present invention to provide a vacuum toilet in which the impurities in the transfer tank are reduced in order to prevent clogging of the vacuum toilet.

Diese Aufgabe wird gelöst durch eine Vakuumtoilette mit den Merkmalen des Schutzanspruchs 1. Vorteilhafte Ausführungsformen sind in den Unteransprüchen definiert.This object is achieved by a vacuum toilet with the features of claim 1. Advantageous embodiments are defined in the subclaims.

Gemäß der vorliegenden Erfindung ist eine zweite Spülwasserleitung vorhanden, die durch die erste Spülwasserleitung gespeist wird. Diese zweite Spülwasserleitung verfügt über ein steuerbares Ventil, das den Spülwasserfluss in der zweiten Spülwasserleitung freigeben oder blockieren kann.According to the present invention, a second flushing water line is provided which is fed by the first flushing water line. This second flushing water line has a controllable valve which can release or block the flow of flushing water in the second flushing water line.

Wenn das steuerbare Ventil die zweite Spülwasserleitung öffnet, wird Spülwasser in den Transfertank gefördert und der Transfertank gespült.When the controllable valve opens the second flush water line, flush water is pumped into the transfer tank and the transfer tank is flushed.

Im Rahmen der vorliegenden Erfindung wird unter dem Begriff "Absaugmasse" die Masse verstanden, die aus dem Toilettenbecken beim Spülen desselben entfernt wird. Die Absaugmasse kann Spülwasser sowie Fäkalien und weitere Bestandteile enthalten.In the context of the present invention, the term "suction mass" refers to the mass that is removed from the toilet bowl when it is flushed. The suction mass can contain flushing water as well as faeces and other components.

Bevorzugt zweigt die zweite Spülwasserleitung von der ersten Spülwasserleitung über einen Anschluss in T-Stückform ab. Dabei fließt das Spülwasser der ersten Spülwasserleitung z.B. in den vertikalen Zweig der T-Stückform hinein und teilt sich in der T-Stückform in zwei Spülwasserströme auf, indem der eine Spülwasserstrom, der weiterhin den Spülwasserstrom der ersten Spülwasserleitung bildet, z.B. durch den linken horizontalen Zweig, und der zweite Spülwasserstrom, der den Spülwasserstrom der zweiten Spülwasserleitung bildet, durch den rechten horizontalen Zweig der T-Stückform herausfließt.Preferably, the second flushing water line branches off from the first flushing water line via a T-piece connection. The flushing water from the first flushing water line flows, for example, into the vertical branch of the T-piece and splits into two flushing water streams in the T-piece, with one flushing water stream, which continues to form the flushing water stream of the first flushing water line, flowing out, for example, through the left horizontal branch, and the second flushing water stream, which forms the flushing water stream of the second flushing water line, flowing out through the right horizontal branch of the T-piece.

Bevorzugt verfügt der Transfertank über eine von der zweiten Spülleitung gespeiste Spüldüse mit mehreren Düsenöffnungen. Über diese Spüldüsenvorrichtung im Transfertank wird gewährleistet, dass möglichst viele und im besten Fall alle Bereiche der Transfertankinnenwandung gespült werden.Preferably, the transfer tank has a flushing nozzle with several nozzle openings fed by the second flushing line. This flushing nozzle device in the transfer tank ensures that as many and, ideally, all areas of the transfer tank's inner wall are flushed.

In einer Ausführungsform der vorliegenden Erfindung ist auch die erste Spülwasserleitung mit einem steuerbaren Ventil versehen. Die beiden steuerbaren Ventile an den Spülwasserleitungen sind unabhängig voneinander steuerbar. Dadurch kann der Spülwasserfluss über verschiedene Wege geleitet werden. Falls das Ventil der ersten Spülwasserleitung geöffnet und das Ventil der zweiten Spülwasserleitung geschlossen ist, kann Spülwasser vom Spülwasserbehälter in das Toilettenbecken, aber nicht in den Transfertank fließen. Falls das Ventil der ersten Spülwasserleitung geschlossen und das Ventil der zweiten Spülwasserleitung geöffnet ist, kann Spülwasser in den Transfertank, aber nicht in das Toilettenbecken fließen. Falls beide Ventile geöffnet sind, kann Spülwasser in den Transfertank und in das Toilettenbecken fließen.In one embodiment of the present invention, the first flush water line is also provided with a controllable valve. The two controllable valves on the flush water lines can be controlled independently of one another. This allows the flush water flow to be directed via different paths. If the valve of the first flush water line is open and the valve of the second flush water line is closed, flush water can flow from the flush water container into the toilet bowl, but not into the transfer tank. If the valve of the first flush water line is closed and the valve of the second flush water line is open, flush water can flow into the transfer tank, but not into the toilet bowl. If both valves are open, flush water can flow into the transfer tank and into the toilet bowl.

In einer weiteren Ausführungsform der vorliegenden Erfindung ist das steuerbare Ventil der zweiten Spülwasserleitung als ein 3/2-Wegeventil ausgebildet. Dadurch kann entweder Spülwasser aus der ersten Spülwasserleitung in eine Fortsetzung der ersten Spülwasserleitung in das Toilettenbecken oder aus der ersten Spülwasserleitung über die zweite Spülwasserleitung in den Transfertank fließen.In a further embodiment of the present invention, the controllable valve of the second flush water line is designed as a 3/2-way valve. As a result, flush water can either flow from the first flush water line into a continuation of the first flush water line into the toilet bowl or from the first flush water line via the second flush water line into the transfer tank.

Bevorzugt sind die steuerbaren Ventile Magnetventile. Nach weiteren bevorzugten Ausführungsformen verfügt die Vakuumtoilette über eine elektronische Steuereinrichtung.Preferably, the controllable valves are solenoid valves. According to further preferred embodiments, the vacuum toilet has an electronic control device.

Diese Steuereinrichtung ist programmtechnisch dazu vorbereitet, die Druckluftquelle und das steuerbare Ventil der zweiten Spülwasserleitung derart zu steuern, dass der Transfertank unter vordefinierten Bedingungen gespült wird.This control device is programmed to control the compressed air source and the controllable valve of the second flushing water line in such a way that the transfer tank is flushed under predefined conditions.

In einer Ausführungsform der vorliegenden Erfindung ist die Steuereinrichtung dazu eingerichtet, als vorgegebene Bedingung die Anzahl von Spülvorgängen des Toilettenbeckens nach der letzten Spülung des Transfertanks zu prüfen. Nach einer vorgegebenen Anzahl von Spülvorgängen steuert die Steuereinrichtung die Druckluftquelle und das steuerbare Ventil an der zweiten Spülwasserleitung derart, dass ein separater Spülvorgang für den Transfertank vorgenommen wird.In one embodiment of the present invention, the control device is configured to set as a predetermined condition to check the number of flushes of the toilet bowl after the last flush of the transfer tank. After a predetermined number of flushes, the control device controls the compressed air source and the controllable valve on the second flush water line in such a way that a separate flush is carried out for the transfer tank.

In einer alternativen Ausführungsform der vorliegenden Erfindung ist die Steuereinrichtung dazu eingerichtet, als vorgegebene Bedingung die Anzahl von Spülvorgängen des Toilettenbeckens nach der letzten Spülung des Transfertanks zu prüfen. Nach einer vorgegebenen Anzahl von Spülvorgängen steuert die Steuereinrichtung die Druckluftquelle und das steuerbare Ventil an der zweiten Spülwasserleitung derart, dass gleichzeitig zum nächsten Spülvorgang des Toilettenbeckens ein Spülvorgang für den Transfertank vorgenommen wird.In an alternative embodiment of the present invention, the control device is designed to check the number of flushing processes of the toilet bowl after the last flushing of the transfer tank as a predetermined condition. After a predetermined number of flushing processes, the control device controls the compressed air source and the controllable valve on the second flushing water line in such a way that a flushing process for the transfer tank is carried out at the same time as the next flushing process of the toilet bowl.

Als bevorzugte Alternative ist die Steuereinrichtung dazu eingerichtet, als vorgegebene Bedingung den Ablauf eines vorgegebenen regelmäßigen Zeitintervalls zu prüfen. Nach Ablauf dieses Zeitintervalls steuert die Steuereinrichtung die Druckluftquelle und das steuerbare Ventil der zweiten Spülwasserleitung derart, dass ein Spülvorgang für den Transfertank vorgenommen wird.As a preferred alternative, the control device is designed to check the expiration of a predetermined regular time interval as a predetermined condition. After expiration of this time interval, the control device controls the compressed air source and the controllable valve of the second flushing water line in such a way that a flushing process is carried out for the transfer tank.

In einer weiteren alternativen Ausführungsform der vorliegenden Erfindung ist die Steuereinrichtung dazu eingerichtet, als vorgegebene Bedingung zu prüfen, ob ein Frostentleerungssignal für das Fahrzeug vorliegt. Das Frostentleerungssignal wird beispielsweise vor Betriebsschluss des Zuges ausgelöst, um alle wasserführenden Leitungen und Behälter zu leeren. Liegt dieses Signal vor, steuert die Steuereinrichtung die Druckluftquelle und das steuerbare Ventil der zweiten Spülwasserleitung derart, dass mit dem Spülwasser, das abgelassenen wird, ein Spülvorgang für den Transfertank vorgenommen wird.In a further alternative embodiment of the present invention, the control device is set up to check as a predetermined condition whether a frost emptying signal is present for the vehicle. The frost emptying signal is triggered, for example, before the end of the train's service life in order to empty all water-carrying lines and containers. If this signal is present, the control device controls the compressed air source and the controllable valve of the second flushing water line in such a way that a flushing process for the transfer tank is carried out with the flushing water that is drained.

Dies stellt sicher, dass vor längerer Nichtnutzung der Vakuumtoilette der Transfertank gereinigt wird, um der Verfestigung von Ablagerungen im Transfertank vorzubeugen.This ensures that the transfer tank is cleaned before the vacuum toilet is not used for a long period of time to prevent deposits from solidifying in the transfer tank.

Die Erfindung wird nachfolgend anhand eines in den Figuren dargestellten Ausführungsbeispiels erläutert. Es zeigen:

Figur 1
einen schematischen Aufbau der Vakuumtoilette mit einem steuerbaren Ventil an der zweiten Spülwasserleitung,
Figur 2
einen schematischen Aufbau der Vakuumtoilette mit einem steuerbaren Ventil an der zweiten Spülwasserleitung und einem steuerbaren Ventil an der ersten Spülwasserleitung,
Figur 3
einen schematischen Aufbau der Vakuumtoilette mit einem steuerbaren Ventil an der zweiten Spülwasserleitung, das als ein 3/2-Wegeventil ausgebildet ist.
The invention is explained below using an embodiment shown in the figures. They show:
Figure 1
a schematic structure of the vacuum toilet with a controllable valve on the second flush water line,
Figure 2
a schematic structure of the vacuum toilet with a controllable valve on the second flush water line and a controllable valve on the first flush water line,
Figure 3
a schematic structure of the vacuum toilet with a controllable valve on the second flush water line, which is designed as a 3/2-way valve.

Eine Vakuumtoilette wird im Folgenden unter Bezugnahme auf die Figuren 1 bis 3 beschrieben. Die Vakuumtoilette umfasst ein Toilettenbecken 10, einen Transfertank 12 und einen Spülwasserbehälter 14. Der Spülwasserbehälter 14 verfügt über einen Füllstandsensor B02, der mit einem Ventil Q06 gekoppelt ist. Zeigt der Füllstandsensor B02 an, dass sich zu wenig Spülwasser im Spülwasserbehälter 14 befindet, wird das Ventil Q06 geöffnet und der Spülwasserbehälter 14 wird über eine von einem Frischwasserreservoir kommende Spülwasserleitung 20 gefüllt.A vacuum toilet is described below with reference to the Figures 1 to 3 described. The vacuum toilet comprises a toilet bowl 10, a transfer tank 12 and a flush water tank 14. The flush water tank 14 has a level sensor B02 which is coupled to a valve Q06. If the level sensor B02 indicates that there is too little flush water in the flush water tank 14, the valve Q06 is opened and the flush water tank 14 is filled via a flush water line 20 coming from a fresh water reservoir.

Der Spülwasserbehälter 14 ist derart ausgebildet und angeschlossen, dass bei Betätigung der Toilette ein Spülvorgang ausgelöst wird. Dabei wird Druckluft über eine von der Druckluftquelle 21 kommende Druckluftleitung 22 über ein Spülventil Q01 und ein Ventil 24 in den Innenraum des Spülwasserbehälters 14 geleitet. Dadurch wird Spülwasser aus dem Spülwasserbehälter 14 über eine erste Spülwasserleitung 16 in das Toilettenbecken 10 befördert. Zu Beendigung des Spülvorgangs wird die Versorgung des Spülwasserbehälters 14 mit Druckluft gestoppt, woraufhin sich die Einstellung des Ventils 24 ändert. Es herrscht dann noch Überdruck im Spülwasserbehälter 14. Durch die veränderte Einstellung des Ventils 24 ist die Entlüftungsleitung 26 zugänglich, worüber der im Spülwasserbehälter 14 herrschende Überdruck abgelassen werden kann.The flush water tank 14 is designed and connected in such a way that a flushing process is triggered when the toilet is operated. Compressed air is supplied via a compressed air line 22 coming from the compressed air source 21 via a flush valve Q01 and a valve 24 into the interior of the flush water tank. 14. This transports flushing water from the flushing water tank 14 into the toilet bowl 10 via a first flushing water line 16. At the end of the flushing process, the supply of compressed air to the flushing water tank 14 is stopped, whereupon the setting of the valve 24 changes. There is then still excess pressure in the flushing water tank 14. The changed setting of the valve 24 makes the vent line 26 accessible, through which the excess pressure in the flushing water tank 14 can be released.

Der Transfertank 12 ist derart ausgebildet und angeschlossen, dass im Anschluss an den Spülvorgang das Einlassventil Q05 geöffnet wird und Absaugmasse aus dem Toilettenbecken 10 mithilfe eines an den Transfertank 12 angelegten Unterdrucks in den Transfertank 12 abgesaugt wird. Anschließend wird das Einlassventil Q05 wieder geschlossen und es wird ein Überdruck im Transferbehälter 12 erzeugt. Daraufhin wird das Auslassventil Q04 geöffnet und die im Transfertank 12 befindliche Absaugmasse wird durch an den Transfertank 12 angelegten Überdruck in ein mit dem Transfertank 12 verbundenes Abwasserreservoir gefördert. Der Unterduck bzw. der Überdruck im Transfertank 12 werden über das Druckventil Q02 und das Vakuumventil Q03 gesteuert.The transfer tank 12 is designed and connected in such a way that after the flushing process, the inlet valve Q05 is opened and suction mass is sucked out of the toilet bowl 10 into the transfer tank 12 using a negative pressure applied to the transfer tank 12. The inlet valve Q05 is then closed again and an overpressure is generated in the transfer tank 12. The outlet valve Q04 is then opened and the suction mass in the transfer tank 12 is pumped into a wastewater reservoir connected to the transfer tank 12 using the positive pressure applied to the transfer tank 12. The negative pressure or the positive pressure in the transfer tank 12 are controlled via the pressure valve Q02 and the vacuum valve Q03.

Eine zweite Spülwasserleitung 18 ist so angeschlossen, dass diese durch die erste Spülwasserleitung 16 gespeist wird. Die zweite Spülwasserleitung 18 verfügt über ein steuerbares Ventil Q07, das den Spülwasserfluss in der zweiten Spülwasserleitung 18 freigeben oder blockieren kann. Wenn das steuerbare Ventil Q07 die zweite Spülwasserleitung 18 öffnet, wird Spülwasser in den Transfertank 12 gefördert und der Transfertank 12 gespült.A second flushing water line 18 is connected so that it is fed by the first flushing water line 16. The second flushing water line 18 has a controllable valve Q07 that can release or block the flow of flushing water in the second flushing water line 18. When the controllable valve Q07 opens the second flushing water line 18, flushing water is pumped into the transfer tank 12 and the transfer tank 12 is flushed.

Die zweite Spülwasserleitung 18 zweigt von der ersten Spülwasserleitung 16 über einen Anschluss in T-Stückform 17 ab. Dabei fließt das Spülwasser der ersten Spülwasserleitung 16 z.B. in den vertikalen Zweig der T-Stückform 17 hinein und teilt sich in der T-Stückform 17 in zwei Spülwasserströme auf, indem der eine Spülwasserstrom, der weiterhin den Spülwasserstrom der ersten Spülwasserleitung 16 bildet, z.B. durch den linken horizontalen Zweig, und der zweite Spülwasserstrom, der den Spülwasserstrom der zweiten Spülwasserleitung 18 bildet, durch den rechten horizontalen Zweig der T-Stückform 17 herausfließt.The second flushing water line 18 branches off from the first flushing water line 16 via a T-piece connection 17. the flushing water of the first flushing water line 16 flows, for example, into the vertical branch of the T-piece 17 and splits into two flushing water streams in the T-piece 17, with one flushing water stream, which continues to form the flushing water stream of the first flushing water line 16, flowing out, for example, through the left horizontal branch, and the second flushing water stream, which forms the flushing water stream of the second flushing water line 18, flowing out through the right horizontal branch of the T-piece 17.

In Figur 2 ist eine Ausführungsform der vorliegenden Erfindung dargestellt, bei der auch die erste Spülwasserleitung 16 mit einem steuerbaren Ventil Q08 versehen ist. Die beiden steuerbaren Ventile Q07 und Q08 sind unabhängig voneinander steuerbar. Dadurch kann der Spülwasserfluss über verschiedene Wege geleitet werden. Falls das Ventil der ersten Spülwasserleitung Q08 geöffnet und das Ventil der zweiten Spülwasserleitung Q07 geschlossen ist, kann Spülwasser vom Spülwasserbehälter 14 in das Toilettenbecken 10, aber nicht in den Transfertank 12 fließen. Falls das Ventil der ersten Spülwasserleitung Q08 geschlossen und das Ventil der zweiten Spülwasserleitung Q07 geöffnet ist, kann Spülwasser in den Transfertank 12, aber nicht in das Toilettenbecken 10 fließen. Falls beide Ventile Q07 und Q08 geöffnet sind, kann Spülwasser in den Transfertank 12 und in das Toilettenbecken 10 fließen.In Figure 2 an embodiment of the present invention is shown in which the first flush water line 16 is also provided with a controllable valve Q08. The two controllable valves Q07 and Q08 can be controlled independently of one another. This allows the flush water flow to be directed via different paths. If the valve of the first flush water line Q08 is open and the valve of the second flush water line Q07 is closed, flush water can flow from the flush water container 14 into the toilet bowl 10, but not into the transfer tank 12. If the valve of the first flush water line Q08 is closed and the valve of the second flush water line Q07 is open, flush water can flow into the transfer tank 12, but not into the toilet bowl 10. If both valves Q07 and Q08 are open, flush water can flow into the transfer tank 12 and into the toilet bowl 10.

In Figur 3 ist eine Vakuumtoilette dargestellt, bei der das steuerbare Ventil der zweiten Spülwasserleitung Q07 als ein 3/2-Wegeventil ausgebildet ist. Dadurch kann entweder Spülwasser aus der ersten Spülwasserleitung 16 in einer Fortsetzung der ersten Spülwasserleitung in das Toilettenbecken 10 oder aus der ersten Spülwasserleitung 16 über die zweite Spülwasserleitung 18 in den Transfertank 12 fließen.In Figure 3 a vacuum toilet is shown in which the controllable valve of the second flush water line Q07 is designed as a 3/2-way valve. As a result, flush water can either flow from the first flush water line 16 in a continuation of the first flush water line into the toilet bowl 10 or from the first flush water line 16 via the second flush water line 18 into the transfer tank 12.

Claims (12)

  1. Vacuum toilet with
    a toilet bowl (10),
    a transfer tank (12) and
    a flushing water tank (14), and
    a first flushing water pipe,
    wherein the flushing water tank (14) is designed and connected to the toilet bowl in such a way that, when the toilet is actuated, a flushing process is triggered in which, with the aid of an overpressure created in the flushing water tank (14) by a compressed air source (21), flushing water is conveyed from the latter via the first flushing water line (16) into the toilet bowl (10), and
    wherein the transfer tank (12) is designed and connected to the toilet bowl in such a way that, following the flushing process, suction mass is sucked out of the toilet bowl (10) into the transfer tank (12) with the aid of a negative pressure applied to the transfer tank (12),
    characterized by a second flushing water line (18) fed by the first flushing water line and having a controllable valve (Q07), through which flushing water is conveyed into the transfer tank (12) when the controllable valve (Q07) opens the second flushing water line (18) in order to flush the transfer tank (12).
  2. Vacuum toilet according to claim 1, characterized in that the second flushing water line (18) branches off from the first flushing water line (16) via a connection in T-piece form (17).
  3. Vacuum toilet according to claims 1 and 2, characterized in that the transfer tank has a flushing nozzle fed by the second flushing line with several nozzle openings arranged in a distributed manner.
  4. Vacuum toilet according to claims 1, 2 and 3, characterized in that the first flush water line (16) is also provided with a controllable valve (Q08) and the two controllable valves can be controlled independently of one another, so that, when the valve of the first flush water line (Q08) is open and the valve of the second flush water line (Q07) is closed, flush water can flow from the flush water tank (14) into the toilet bowl (10), but not into the transfer tank (12), and, if the valve of the first flush water line (Q08) is closed and the valve of the second flush water line (Q07) is open, flush water can flow into the transfer tank (12) but not into the toilet bowl (10), and, if both valves are open, flush water can flow into the transfer tank (12) and into the toilet bowl (10).
  5. Vacuum toilet according to claim 1, characterized in that the controllable valve of the second flush water line (Q07) is designed as a 3/2-way valve which either directs flush water from the first flush water line (16) into a continuation of the first flush water line into the toilet bowl (10) or directs flush water from the first flush water line (16) via the second flush water line (18) into the transfer tank (12).
  6. Vacuum toilet according to the preceding claims, characterized in that the controllable valve (Q07) of the second flush water line and, if dependent on claim 4, the controllable valve (Q08) of the first flush water line is a solenoid valve or solenoid valves.
  7. Vacuum toilet according to the preceding claims, characterized in that it has an electronic control device which is prepared in terms of programming to control the compressed air source (21) and the controllable valve of the second flushing water line (Q07) in such a way that the transfer tank (12) is flushed under predetermined conditions, such as the number of flushing operations of the toilet bowl after the last flushing of the transfer tank or the expiry of a predetermined regular time interval or whether a frost drain signal is present.
  8. Vacuum toilet according to claims 4 and 7 or 5 and 7, characterized in that the control device is set up to check, as a predetermined condition, the number of flushing operations of the toilet bowl (10) after the last flushing of the transfer tank (12) and, after a predetermined number of flushing operations, to control the compressed air source (21) and the controllable valve on the second flushing water line (Q07) in such a way that a separate flushing operation is carried out for the transfer tank (12).
  9. Vacuum toilet according to claims 1, 4 and 7, characterized in that the control device is set up to check the number of flushing operations of the toilet bowl (10) after the last flushing of the transfer tank (12) as a predetermined condition and, after a predetermined number of flushing operations, to control the compressed air source (21) and the controllable valve on the second flushing water line (Q07) in such a way that a flushing operation for the transfer tank (12) is carried out simultaneously with the next flushing operation of the toilet bowl (10).
  10. Vacuum toilet according to claims 1, 4 and 7 or 1, 5 and 7, characterized in that the control device is set up to check the expiry of a predetermined regular time interval as a predetermined condition and, on expiry, to control the compressed air source (21) and the controllable valve on the second flushing water line (Q07) in such a way that a flushing process for the transfer tank (12) is carried out.
  11. Vacuum toilet according to claims 1, 4 and 7 or 1, 5 and 7, characterized in that the control device is set up to check, as a predetermined condition, whether a frost drain signal is present and, if a signal is present, to control the compressed air source (21) and the controllable valve of the second flushing water line (Q07) in such a way that a flushing process for the transfer tank (12) is carried out with the flushing water that is drained.
  12. A method for flushing a vacuum toilet with
    a toilet bowl (10),
    a transfer tank (12) and
    a flushing water tank (14), and
    a first flushing water pipe
    with the steps:
    Triggering of a flushing operation when the toilet is actuated, in which, with the aid of an overpressure applied in the flushing water tank (14) by a compressed air source (21), flushing water is conveyed from the latter into the toilet bowl (10) via a first flushing water line (16), and
    Following the flushing process: Suction of a suction mass from the toilet bowl (10) into the transfer tank (12) using a vacuum applied to the transfer tank (12),
    characterized in that the transfer tank (12) is flushed by feeding flushing water into the transfer tank (12) through a second flushing water line (18) fed by the first flushing water line by means of a controllable valve (Q07) when the controllable valve (Q07) opens the second flushing water line (18).
EP21798600.9A 2020-11-19 2021-10-19 Vacuum toilet and method of flushing a vacuum toilet Active EP4248028B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020106645.5U DE202020106645U1 (en) 2020-11-19 2020-11-19 Vacuum toilet
PCT/EP2021/078939 WO2022106135A1 (en) 2020-11-19 2021-10-19 Vacuum toilet

Publications (2)

Publication Number Publication Date
EP4248028A1 EP4248028A1 (en) 2023-09-27
EP4248028B1 true EP4248028B1 (en) 2025-01-01

Family

ID=74092526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21798600.9A Active EP4248028B1 (en) 2020-11-19 2021-10-19 Vacuum toilet and method of flushing a vacuum toilet

Country Status (3)

Country Link
EP (1) EP4248028B1 (en)
DE (1) DE202020106645U1 (en)
WO (1) WO2022106135A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI110538B (en) * 2001-07-02 2003-02-14 Evac Int Oy vacuum Drainage
ES2366504B1 (en) * 2008-05-14 2012-09-07 Tecnicas Modulares E Industriales, S.A. TOILET WITH VACUUM EVACUATION SYSTEM.
DE102012023683A1 (en) * 2012-11-28 2014-05-28 Dowaldwerke Gmbh Sanitary unit such as wash basin and shower used in toilet of rail vehicle, has primary and secondary valves that are connected to electronic control unit which is designed such that simultaneous opening of valves is precluded
DE202013008298U1 (en) * 2013-09-20 2014-12-22 Evac Gmbh Vacuum toilet with alternating squeeze valve closing
CA3117023A1 (en) 2020-05-15 2021-11-15 The Procter & Gamble Company Product containing dissolvable solid article

Also Published As

Publication number Publication date
DE202020106645U1 (en) 2020-12-03
WO2022106135A1 (en) 2022-05-27
EP4248028A1 (en) 2023-09-27

Similar Documents

Publication Publication Date Title
DE69305547T2 (en) Odor removal for mobile vacuum toilet system
DE68927589T2 (en) Vacuum toilet system
EP3209834B1 (en) Sanitary unit with monitoring device
EP2531658B1 (en) Flushing water container system for flushing water of a mobile toilet
EP3164314B1 (en) Toilet device having a backflushing function for a particle filter
DD145646A5 (en) SEWAGE SEWAGE SYSTEM
EP2641876B1 (en) Biological wastewater treatment device
DE3932893A1 (en) DRAIN SYSTEM
EP0704372B1 (en) Vaccum toilet in an aircraft
EP3129560B1 (en) Pneumatic compact vacuum toilet
WO2011000001A1 (en) Device and method for cleaning wastewater lines of vacuum toilet systems
DE102012023683A1 (en) Sanitary unit such as wash basin and shower used in toilet of rail vehicle, has primary and secondary valves that are connected to electronic control unit which is designed such that simultaneous opening of valves is precluded
DE69631652T2 (en) VACUUM SEWAGE PLANT
EP2447131B1 (en) Valve assembly for the removal of a liquid medium and method for controlling a valve assembly
EP2305530A1 (en) Method for protecting the fresh water system of a vehicle from freezing
DE69012773T2 (en) Vacuum sewage device.
EP4248028B1 (en) Vacuum toilet and method of flushing a vacuum toilet
DE19713504C1 (en) Vacuum toilet system for vehicle and island sites not connected to main sewage system
WO1987007665A1 (en) Sanitary installation and toilet carriage
EP1855060B1 (en) Method for degasification and/or pressure maintenance in a closed water cycle
DE202004015743U1 (en) Removal unit for material in a plastic working machine, comprises a container suction line with a closure, and one or more separators
DE102004016756B4 (en) Material residue extraction equipment for plastics processing machine loading system includes a suction line from each filling container to metering screw via shut-off valve
DE102005014301B4 (en) Device for dosing a precipitant for phosphate elimination in a waste water treatment plant
DE102012110773B4 (en) Pumping station and process for pumping wastewater
DE10161591A1 (en) Automatic changeover of granules in hoppers on plastics processing machines involves extraction of granules until a sensor indicates a specific level in hoppers and then addition of new granules

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230619

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240726

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502021006292

Country of ref document: DE

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: TRAINVAC GMBH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN