WO2009013003A2 - Module de commande des eaux usées - Google Patents

Module de commande des eaux usées Download PDF

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Publication number
WO2009013003A2
WO2009013003A2 PCT/EP2008/006105 EP2008006105W WO2009013003A2 WO 2009013003 A2 WO2009013003 A2 WO 2009013003A2 EP 2008006105 W EP2008006105 W EP 2008006105W WO 2009013003 A2 WO2009013003 A2 WO 2009013003A2
Authority
WO
WIPO (PCT)
Prior art keywords
valve
control module
valve body
wastewater
storage container
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.)
Ceased
Application number
PCT/EP2008/006105
Other languages
German (de)
English (en)
Other versions
WO2009013003A3 (fr
Inventor
Ingo Zerbes
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.)
AOA Apparatebau Gauting GmbH
Original Assignee
AOA Apparatebau Gauting 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 AOA Apparatebau Gauting GmbH filed Critical AOA Apparatebau Gauting GmbH
Priority to EP08785058A priority Critical patent/EP2167745B1/fr
Priority to AT08785058T priority patent/ATE554240T1/de
Publication of WO2009013003A2 publication Critical patent/WO2009013003A2/fr
Publication of WO2009013003A3 publication Critical patent/WO2009013003A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 waste water control module in a vacuum supply system on board a vehicle.
  • the toilets, wash hand basins, galley sinks and similar facilities of the corresponding air, water or land vehicle via an associated valve unit and a line system connected to a collection in which, based on the ambient pressure of the device concerned (in aircraft the Cabin pressure) a negative pressure prevails. If the respective valve unit is opened, the contents of the relevant washing, rinsing, toilet or other basin is transported due to the pressure gradient in the sump.
  • a disadvantage of such conventional vacuum supply systems is the strong noise development especially at the end of the emptying of the device in question (washbasin or the like). This is all the more disturbing as, in particular for reasons of hygiene, in each case after each use of the device emptying is provided. This also has an adverse effect on the life of a vacuum generator, which is typically used to generate the negative pressure in the system.
  • Vacuum systems are also known for stationary applications, for example when the lines in a spatially extended disposal system Due to the local conditions may have only a slight slope.
  • various wastewater control modules have been proposed in which between the basin in which the liquid is collected and / or collected, and the respective device (eg sink) associated valve unit arranged a buffer with a storage container is.
  • wastewater control modules are known for the above-mentioned stationary applications, each having a buffer and a storage container, an inlet nozzle and connectable to a vacuum suction outlet nozzle, the inlet nozzle opens into the storage container and in the flow path between the storage container and the Outlet nozzle disposed in the bottom region of the storage container valve is arranged, which comprises a valve seat and a relative to this movable valve body.
  • DE 2450026 Al discloses such a buffer for a float-controlled wastewater control module of a stationary vacuum supply system, wherein in the bottom region of the storage container, a valve seat is executed, on which a arranged in the interior of the storage volume, buoyant closing body rests.
  • negative pressure which acts on the closing body in the region of the valve opening, the latter is held on the valve seat even when the storage container is filled.
  • the storage container is, if the liquid collected in it or reaches a predetermined level, automatically emptied by opening the valve.
  • the liquid Level within the storage container by means of a float, which acts on a pilot pneumatic switch detected, the pressure change in a pneumatic switch downstream pilot line causes floating of the closing body and consequently opening of the valve.
  • the floating of the closing body can be brought about in particular mechanically or pneumatically.
  • the wastewater control module constructed using the known buffer discussed above is unsuitable for mobile applications; in particular, it does not meet the strict reliability requirements in the aviation sector.
  • a reliable closing of the valve provided in the known buffer is not ensured even if, as is regularly the case for galley wastewaters, comparatively small foreign bodies are present in the wastewater, namely those which are buoyant.
  • the inevitable in mobile applications on board vehicles vibrations in an intolerable manner adversely affect the reliability of the waste water control module by they can cause uncontrolled opening or closing of the valve.
  • the wastewater control module known from DE 2450026 Al is not failsafe in the sense that the valve still safely closes in case of failure of the vacuum source or any other decrease in the negative pressure in the system; because the negative pressure is, as stated, required for holding the valve in its closed position.
  • the state-of-the-art waste water control module is not backflow-proof.
  • EP 829584 A2 discloses another wastewater control module intended for use in a stationary vacuum supply installation and suitable for this purpose alone, having a buffer store, in which the storage tank is to be automatically emptied when a predetermined fill level is reached.
  • the storage container is surrounded by an annular space which communicates with the storage container via a connection arranged near the bottom of the storage container.
  • the wastewater control module has a temporary storage; it comprises a storage container, an inlet connection opening into the latter and an outlet connection piece connectable to a vacuum suction line; in the flow path between the storage container and the discharge nozzle, a valve is arranged in the bottom region of the storage container, which valve comprises a valve seat and a valve body movable relative thereto; a valve housing is arranged on the intermediate store below the storage container, and the valve body bears against the valve seat on the side facing away from the storage container; the valve body is sealed by means of a membrane relative to the valve housing in this slidably; the outlet nozzle opens into a working space bounded by the valve body, the valve housing, the membrane and the valve seat; a switchable actuating device, which lifts the valve body downwards from the seat, acts on the valve body
  • the outlet nozzle of the intermediate store which bears the negative pressure prevailing in the collecting container and the line system, opens into a working space bounded by the valve seat, the valve body , the valve housing and the valve body deformable relative to the valve housing sealing membrane, in which respect to the valve seat and an adjacent area, in particular of the soil of the storage container can count and to the valve housing also from the bottom of the storage container downwardly projecting, projecting into the valve housing, the edge of the membrane spanning coat or collar.
  • the corresponding working space - with the valve closed - has an annular shape extending around the valve body, which of course can not be equated with circular ring shape.
  • the prevailing in the line system vacuum can thus - via a corresponding action on the working space - help to close the valve after emptying of the storage container active and / or then keep closed.
  • the closing of the valve can thus, when the actuating device, which has lifted the valve body for opening the valve for the purpose of emptying the storage container down from the seat or lifted off, off, take place actively by a pneumatic support of the closing movement.
  • both the opening of the valve, by switching on an actively switchable pilot valve comprehensive actuator, as well as - caused by switching off the actuator - closing the valve regardless of the level of the storage tank is possible.
  • a complete emptying of the storage container including all foreign bodies can be ensured, which is particularly favorable for the reliable operation of the valve of the buffer.
  • valve body is sealed off from the valve housing by means of a membrane separating the working chamber from the control chamber. Because this results in a particularly high tolerance of the function of the buffer against foreign bodies, which in turn has a positive effect on the reliability of the buffer. Furthermore, it is essential for the achievement of the desired objective that, according to the invention, a control chamber delimited by the valve housing, the valve body and the diaphragm sealing the latter relative to the valve housing is provided on the side of the valve body which is remote from the working space and which has a control line can be shut off by means of an actively switchable pilot valve, can be connected to the vacuum suction line.
  • the actuator by means of which the valve is to be actively opened, insofar as it is pneumatically executed when the pilot valve of the present in the vacuum suction line vacuum also prevails in the control chamber, whereby the valve body is lifted down from the seat.
  • the waste water control module has the property that a waste water transport only from the storage tank to the Trittsstutzen is possible, regardless of the Eintial. Outlet nozzle prevailing pressure conditions and the position of the pilot valve. Thus, the wastewater control module reliably prevents the backflow of wastewater into the sink. (For sanitary reasons, this is a mandatory requirement for aircraft sewage systems.)
  • the cross section of the storage container can expand from top to bottom, for example by the corresponding housing is made more or less conical. This is also favorable with regard to the operational reliability of the low-temperature vacuum supply system equipped with the wastewater control module according to the invention, if there is a potential risk that the liquid accumulated in the storage container will freeze; because a possible ice layer can be easily solved in this way at an actively initiated emptying of the collecting container (s.o.) From the wall of the collecting container.
  • an angle tube is connected to a defined spoiler edge, wherein the control line opens downstream of the spoiler edge in a dead space of the angle tube.
  • the pilot Valve can be controlled in particular by an electromagnet, and preferably such that it is locked when the electromagnet is de-energized.
  • the pilot valve can in the normal operating state of the invention equipped with the wastewater control module vacuum liquid disposal system, ie at a prevailing in the vacuum suction line negative pressure, the latter support the closing function of the pilot valve.
  • the wastewater control module regardless of a possible complementary mechanical bias of the pilot valve (see below) - failsafe in the sense that the valve of the buffer remains reliably closed in an interruption of the power supply to the solenoid.
  • the pilot valve is preferably also biased by means of a mechanical spring in its closing the control line position. In this case, the pilot valve takes
  • Equipped liquid disposal system equipped eg aircraft
  • the control chamber is preferably connected via a throttled ventilation opening with the environment. This supports via a correspondingly defined pressure equalization between the control chamber and the environment, the closing function of the valve after switching off the actuator.
  • the buffer preferably also has at least one level sensor associated with the storage container, whose output acts on the actuator such that the storage container is automatically emptied upon reaching a predetermined level.
  • an electrical output signal generating level sensor is provided, which can be based for example on a capacitive or resitive measuring principle.
  • the at least one level sensor preferably also determines whether the buffer is completely emptied in order to initiate the closing of the valve in dependence thereon and only then - by corresponding actuation of the pilot valve.
  • the closing of the valve can be delayed by a predetermined time interval in order to favor the emptying of the buffer and / or a cleaning of the valve and / or the promotion of the extracted liquid from the buffer into the collecting container by a corresponding flushing.
  • one of the actuator associated electrical control is housed protected against moisture in the buffer in a arranged below the valve housing housing portion.
  • a mechanical locking spring is provided, which biases the valve body against the valve seat in addition to the negative pressure effect described above.
  • the valve housing particularly preferably has a guide bush in which a guide pin connected to the valve body is guided.
  • a guide is especially indicated for reliable operation of the valve, when the valve body is sealed by a diaphragm against the valve housing.
  • a further preferred development of the present invention is characterized in that suitable position detection means are provided for determining the position of the valve body. This allows a regular reliable control of the function of the valve of the buffer by an evaluation circuit, to which also the actuator and the level sensors, if any, are connected.
  • a vacuum generator is connected to the collecting tank, which is set in operation as needed, if the prevailing between the sump and the environment pressure difference (eg in a parked aircraft) not sufficient to ensure a reliable Sige promotion of accumulated in the buffer storage liquid in the collection ensure.
  • the vacuum generator is put into operation before the valve of the wastewater control module is opened by activating the actuating device.
  • Fig.l is a vertical section through an inventive wastewater control module, which is suitable for use in the context of an otherwise well-known prior art vacuum wastewater disposal system, and
  • FIG. 2 is an enlarged detail view of the lower portion of the sewage control module according to Fig.l.
  • the waste water control module shown in the drawing comprises a storage tank 1, an inlet opening 2 opening into the storage tank and an outlet pipe 3 which can be connected to a vacuum suction pipe.
  • the storage container 1 is limited by an upwardly slightly tapered wall 4 of the housing 5, a the inlet nozzle 3 having cover 6 and a fixed mounted on a step 7 of the housing 5 bottom ring 8.
  • In the region of the central opening of the bottom ring. 8 is formed by a corresponding annular, inwardly directed projection 9, a valve seat 10.
  • valve housing 11 The region of the housing 5 located underneath the bottom ring 8 forms a valve housing 11.
  • a valve body 12 cooperating with the valve seat 10 is accommodated therein.
  • the valve body 12 comprises a base body 13 with a plate 14, a downwardly projecting from this guide pin 15 and an upwardly projecting lug 16 on the neck 16, a cap-like upper part 17 is mounted, which carries a sealing ring 18 which in the closed position of Valve 19 sealingly cooperates with the valve seat 10.
  • the edge of a substantially tubular membrane 20 is clamped, whose other edge defined by the end edge of the bottom ring 8 downwardly projecting shell 21 at a stage 22 of the valve housing 11 is.
  • the sealed by the membrane 20 and the plate 14 of the valve body 12 relative to the working space 23 part of the interior of the valve housing 11 forms a control chamber 25.
  • the central portion of the valve housing is formed into a guide sleeve 26 in which the guide pin 15 of the valve body 12th slidably guided along the vertical axis of the buffer.
  • a guide sleeve 26 Around the guide sleeve 26 around a designed as a helical spring 27 Zuhaltefeder 28 is provided, which biases the valve body 12 against the valve seat 10.
  • a control line 29, the other end communicates with the outlet - clip 3.
  • the control line 29 is controlled by means of a controllable via an electromagnet 30 pilot valve 31 and closable.
  • the outlet nozzle 3 is designed in the form of a 90 ° -Winkelrohres with a defined Abrißkante for wastewater flow in the bend 32.
  • the control line 29 opens downstream of the tear-off edge in a dead space of the angle tube.
  • the control chamber 25 communicates with the environment via a throttled ventilation opening 33 arranged in the wall of the valve housing 11. By opening the pilot valve 31, the control chamber 25 can be acted upon by the negative pressure prevailing in the outlet connection 3, as in the downstream line system and the collecting container.
  • valve body 12 is lifted down from the valve seat 11 and the valve 19 is opened.
  • control line 29, the pilot valve 31 and the solenoid 30 taken together form a switchable, in their operation the valve body 12 down from the valve seat 10 lifting actuator 34th
  • An electrical control 35 controlling the electromagnet 30 is arranged on a printed circuit board 36, which is accommodated in a housing section 37 arranged below the valve housing 11.
  • the corresponding housing portion 37 is closed by a cover 38, to which a connection of the controller 35 of the buffer to the on-board electronics serving connector 39 is arranged.
  • three level sensors 40 are arranged, which are connected to the controller 35, so that when it reaches a predetermined wastewater level in the storage tank 1 whose emptying can be automatically initiated.
  • position detection means comprise a magnet 42 connected to the guide pin 15 and a sensor 45 arranged on the circuit board and projecting into a corresponding recess 44 arranged in the bottom 43 of the valve housing 11.

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)
  • Fluid-Driven Valves (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Sewage (AREA)

Abstract

Module de commande d'eaux usées dans une installation d'évacuation sous vide à bord d'un véhicule, comprenant un réservoir intermédiaire et un réservoir d'alimentation (1), une tubulure d'entrée (2) débouchant dans le réservoir d'alimentation, et une tubulure de sortie (3) raccordable à une conduite d'évacuation sous pression. Une soupape (19), disposée dans la voie d'écoulement située entre le réservoir d'alimentation et la tubulure de sortie, dans la zone fond du réservoir d'alimentation, comporte un siège de soupape (10) et un corps de soupape (12) mobile par rapport à ce dernier. Un carter de soupape (11) disposé contre le réservoir intermédiaire sous le réservoir d'alimentation (1), et le corps de soupape (12) repose sur le siège de soupape sur la face opposée au réservoir d'alimentation. Le corps de soupape, mobile dans le carter de soupape, est étanche vis-à-vis dudit carter de soupape par une membrane (20). La tubulure de sortie (3) débouche dans une chambre de travail (23) délimitée par le corps de soupape, le carter de soupape, la membrane et le siège de soupape. Un dispositif d'actionnement (34) commutable soulève le corps de soupape du siège vers le bas, agit sur le corps de soupape. Une chambre de commande (25) qui est située sur le côté du corps de soupape (12) opposé à la chambre de travail (23), est délimitée par le carter de soupape (11) et le corps de soupape peut être raccordé à la conduite d'évacuation sous pression par une conduite de commande (29) qui peut être fermée par une soupape pilote (31) à commande active.
PCT/EP2008/006105 2007-07-25 2008-07-25 Module de commande des eaux usées Ceased WO2009013003A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08785058A EP2167745B1 (fr) 2007-07-25 2008-07-25 Module de commande des eaux usées
AT08785058T ATE554240T1 (de) 2007-07-25 2008-07-25 Abwasser-kontrollmodul

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034499A DE102007034499A1 (de) 2007-07-25 2007-07-25 Abwasser-Kontrollmodul mit einem Zwischenspeicher
DE102007034499.8 2007-07-25

Publications (2)

Publication Number Publication Date
WO2009013003A2 true WO2009013003A2 (fr) 2009-01-29
WO2009013003A3 WO2009013003A3 (fr) 2009-03-12

Family

ID=39832094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/006105 Ceased WO2009013003A2 (fr) 2007-07-25 2008-07-25 Module de commande des eaux usées

Country Status (4)

Country Link
EP (1) EP2167745B1 (fr)
AT (1) ATE554240T1 (fr)
DE (1) DE102007034499A1 (fr)
WO (1) WO2009013003A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023136174A1 (de) * 2023-12-21 2025-06-26 Diehl Aviation Gilching Gmbh Toilettenanordnung für ein Flugzeug mit kombinierter Absaugung von Schwarzwasser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450026A1 (de) 1973-10-26 1975-04-30 Waertsilae Oy Ab Abwasserventil
EP0829584A2 (fr) 1996-09-13 1998-03-18 Roediger Anlagenbau GmbH Arrangement pour pomper des liquides
WO2001053618A2 (fr) 2000-01-18 2001-07-26 Roediger Vakuum- Und Haustechnik Gmbh Systeme sanitaire

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1550053A1 (de) * 1966-01-10 1969-05-08 Adox Du Pont Fotowerke Bodenauslaufventil fuer Fluessigkeitsbehaelter
DE1600923A1 (de) * 1967-05-05 1970-07-16 Siemens Elektrogeraete Gmbh Verschlussventil
GB1588324A (en) * 1977-08-03 1981-04-23 Jered Ind Inc Vacuum and gravity operated timer
DE8436127U1 (de) * 1984-12-10 1985-03-14 Fr. Buschjost GmbH & Co, 4970 Bad Oeynhausen Mehrwegeventil
DE3823515A1 (de) * 1988-05-10 1989-11-23 Harald Michael Steuervorrichtung fuer ein durch unterdruck betaetigbares absaugventil an einer vakuumleitung, insbesondere fuer abwasser
DE9418045U1 (de) * 1994-11-11 1995-02-02 Neumüller, Peter, Dipl.-Phys., 63128 Dietzenbach Kunststoffbehälter zur Speicherung des Wassers oder anderer Flüssigkeiten mit anomalem Estarrungsverhalten
DE10006028C1 (de) * 2000-02-10 2001-05-23 Roediger Vakuum & Haustechnik Verfahren und Anordnung zum Belüften eines Flüssigkeit aufnehmenden Behälters
US6698213B2 (en) * 2001-05-22 2004-03-02 Integrated Biosystems, Inc. Systems and methods for freezing and storing biopharmaceutical material
FI111978B (fi) * 2002-02-28 2003-10-15 Evac Int Oy Urinaalijärjestely

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450026A1 (de) 1973-10-26 1975-04-30 Waertsilae Oy Ab Abwasserventil
EP0829584A2 (fr) 1996-09-13 1998-03-18 Roediger Anlagenbau GmbH Arrangement pour pomper des liquides
WO2001053618A2 (fr) 2000-01-18 2001-07-26 Roediger Vakuum- Und Haustechnik Gmbh Systeme sanitaire

Also Published As

Publication number Publication date
EP2167745A2 (fr) 2010-03-31
DE102007034499A1 (de) 2009-01-29
EP2167745B1 (fr) 2012-04-18
ATE554240T1 (de) 2012-05-15
WO2009013003A3 (fr) 2009-03-12

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