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EP1752589A1 - A vacuum toilet - Google Patents

A vacuum toilet Download PDF

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Publication number
EP1752589A1
EP1752589A1 EP05388065A EP05388065A EP1752589A1 EP 1752589 A1 EP1752589 A1 EP 1752589A1 EP 05388065 A EP05388065 A EP 05388065A EP 05388065 A EP05388065 A EP 05388065A EP 1752589 A1 EP1752589 A1 EP 1752589A1
Authority
EP
European Patent Office
Prior art keywords
toilet
tank
inlet
valve
sensors
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.)
Withdrawn
Application number
EP05388065A
Other languages
German (de)
French (fr)
Inventor
Lars Genild
Henning Christiansen
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.)
GLOVA GMBH
Original Assignee
Glova 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 Glova GmbH filed Critical Glova GmbH
Priority to EP05388065A priority Critical patent/EP1752589A1/en
Priority to PCT/DK2006/000442 priority patent/WO2007019854A1/en
Publication of EP1752589A1 publication Critical patent/EP1752589A1/en
Withdrawn legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/003—Grey water flushing systems

Definitions

  • the invention relates to vacuum toilets which are suitable for being installed in a vehicle such as a train and a bus.
  • Such toilets are known for more than a decade and use compressed air for powering a vacuum generator such as an ejector, and for controlling the opening and closing of inlet and outlet valves to an intermediate tank for receiving and discharging waste material from the toilet bowl.
  • Compressed air can also be used for controlling the opening and closing of a valve for flushing the toilet bowl with water.
  • EP 679 211 discloses such a toilet with sensors for sensing states of malfunction of the toilet such as lack of flushing water, lack of compressed air, flow obstruction, bowl overflow and below-freezing temperatures.
  • the sensors of that toilet are two-state (on/off) switches that change state when a predetermined limit is reached, ie in case of malfunction. Data from the switches representing the use of the toilet over a period are stored, but the diagnostic value is limited.
  • the invention provides a toilet with one or more sensors for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet, the air pressure in the tank, the ambient temperature, the open or closed state of the inlet valve, and the open or closed state of the outlet valve.
  • a controller controls the operation of the toilet and during each cycle of operation of the toilet a record is made of the variation of each of the parameters that monitored by the sensors, and the set of records is stored in a memory.
  • Data in the memory can be read out or uploaded for detailed analysis, and the data can be presented graphically, in a table, or in other suitable manner for use by service people.
  • the memory can be a removable memory such as a memory card, a floppy disk, a CDROM or other suitable storage medium, or the data can be transmitted wirelessly to a centrally located computer. Such transmission can be initiated automatically by the controller in case a malfunction has been diagnosed by the controller, or at the request of a service person or the centrally located computer, eg at regular intervals.
  • test report can serve as a basis for demonstrating the history of the toilet, and in case of malfunction a test report serves as a basis of diagnosing the toilet and deciding on the proper action to be taken.
  • a service manual will typically be available to the service persons as a tool with instructions for interpreting the registered data, diagnosing and proposing remedy or repair.
  • such instructions can also be stored in the controller or its memory, whereby the controller can propose one or more possible diagnoses and one or more possible repairs.
  • the registered data may be used to localise the cause of the malfunction, and the faulty component can be identified both in the toilet itself and possibly also in the supply of water and in compressed air and in the sewer system receiving the discharged waste material form the toilet.
  • FIG 1 a toilet with a toilet bowl 1.
  • the toilet has an air inlet 11 that can be connected to a supply of compressed air eg in a vehicle, in which the toilet is to be installed. Compressed air passes a filter regulator 12.
  • the toilet has a water inlet 5 that can be connected to a supply of flushing water in the vehicle through a check valve 6.
  • a valve block 14 comprises operating valves V1 - V5, which are controlled by a controller 21 to supply compressed air to pneumatically operated components of the toilet.
  • a tank 3 is connected to the toilet bowl 1 via a pneumatically operated inlet valve 2 that can allow waste material in the toilet bowl to flow into the tank 3.
  • a vacuum generator 16 preferably in the form of an ejector, is driven by compressed air and is controllable to establish a vacuum, ie a subatmospheric pressure, in the tank 3.
  • a typical operating cycle of the toilet is as follows, where details may vary.
  • the inlet valve 2 to the tank 3 and the outlet valve 4 from the tank 3 are closed, and the tank 3 is vented to the ambient atmosphere through the ejector 16 and the open pinch valve 17.
  • the water pump 7 is filled with water, and the flush valve 8 is closed. No electric current flows in the pneumatic valves V1 - V5 and the entire system is monitored by the controller 21.
  • valve V1 When the toilet is activated by a user it enters a vacuum generating phase.
  • the valve V1 is activated, and air flows to the ejector 16 and evacuates the tank to a predetermined vacuum.
  • the valve V5 is activated and starts the water pump 7.
  • the flush valve 8 is opened, and the toilet bowl is flushed with water through a distributor block and flush nozzles 10.
  • the valve V3 When the predetermined vacuum is established in the tank, the valve V3 is activated and opens the inlet valve 2, whereby the atmospheric pressure forces the waste material including flush water into the tank 3. Then the inlet valve is again closed, and the waste material and the flush water are enclosed in the tank 3.
  • Valve V2 closes the pinch valve 17 to make the tank a closed volume.
  • valve V1 is activated, and air flows to the ejector 16, but because the pinch valve 17 is closed the air flows into the tank to establish a superatmospheric pressure (ie higher than atmospheric pressure) in the tank 3.
  • the outlet valve 4 is opened, and the pressure in the tank forces the waste material out of the tank 3 and into a collecting tank in the vehicle.
  • the toilet has the following new features, which can also be implemented in toilets of different construction and function.
  • the toilet has a first pressure sensor 13 that senses values of the air pressure in the air inlet, and a second pressure sensor 15 that senses values of the air pressure in the tank 3, both throughout each cycle of operation of the toilet.
  • the controller 21 stores the sensed pressure values in a memory 20.
  • a temperature sensor 19 senses the ambient temperature, and in case the ambient temperature drops below a predetermined temperature slightly above the freezing temperature of water, the controller will initiate an emptying cycle and prevent the use of the toilet until the temperature again rises to a safe value with no risk of freezing.
  • Stored data representing the values sensed by the one or more sensors (13, 15, 18, 19) can be processed in the controller 21, or the data can be transferred to a computer external to the toilet, eg to a centrally located computer.
  • the memory 20 can be a solid state memory or a removable storage medium that is moved with the data, or the transfer can be a wired or wireless transmission.
  • figure 2 is shown graphically the pressures in the air inlet and in the tank and the opening and closing of valves during a cycle of operation of the toilet of the invention.
  • Graphic presentation of the data is better suited for visual inspection by humans than figures in tables, which are more suited for processing in a computer.
  • the curves can be presented individually or as an average of several curves.
  • the data can be processed to show tendencies over time, and statistical calculations etc. can be made.
  • figure 2 is also shown the currents controlling the valves V1 - V5 in the valve block 14 and the signal from the reed switch 18 indicating the open or closed state of the inlet valve 2.
  • the time scale is the same in both parts of the figure, whereby the relative timing of events becomes clear.
  • the build-up of vacuum and pressure in the tank can be followed, and it can be determined if the capacity of the supply of compressed air is sufficient.
  • the error can be localised, and remedy of the malfunction can be suggested and carried out.
  • a toilet of the invention can have one or more, and any combination, of the sensors 13, 15, 18, 19 for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet 11, the air pressure in the tank 3, the ambient temperature, the open or closed state of the inlet valve 2, and the open or closed state of the outlet valve 4.
  • the toilet of the invention can have a wireless transmitter, eg operating on a public mobile telephone network such as GSM or UMTS based networks, and it can be arranged to transmit a use and status report at regular intervals or in case of malfunction. These reports are received centrally, and in case of malfunction of a toilet the carrying vehicle can be called for repair.
  • a wireless transmitter eg operating on a public mobile telephone network such as GSM or UMTS based networks

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)

Abstract

A vacuum toilet with one or more sensors for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet, the air pressure in the tank, the ambient temperature, the open or closed state of the inlet valve, and the open or closed state of the outlet valve. This allows a full and detailed diagnosis of the toilet as well as documentation of the status and history of the toilet. A test report including an individual serial number can be issued and supplied with the toilet to the customer, and test reports can serve as a basis for demonstrating the history of the toilet, and in case of malfunction a test report serves as a basis of diagnosing the toilet and deciding on the proper action to be taken.

Description

    Field of the invention
  • The invention relates to vacuum toilets which are suitable for being installed in a vehicle such as a train and a bus.
    • Background
  • Such toilets are known for more than a decade and use compressed air for powering a vacuum generator such as an ejector, and for controlling the opening and closing of inlet and outlet valves to an intermediate tank for receiving and discharging waste material from the toilet bowl. Compressed air can also be used for controlling the opening and closing of a valve for flushing the toilet bowl with water.
  • EP 679 211 discloses such a toilet with sensors for sensing states of malfunction of the toilet such as lack of flushing water, lack of compressed air, flow obstruction, bowl overflow and below-freezing temperatures. The sensors of that toilet are two-state (on/off) switches that change state when a predetermined limit is reached, ie in case of malfunction. Data from the switches representing the use of the toilet over a period are stored, but the diagnostic value is limited.
    • Summary of the invention
  • The invention provides a toilet with one or more sensors for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet, the air pressure in the tank, the ambient temperature, the open or closed state of the inlet valve, and the open or closed state of the outlet valve. A controller controls the operation of the toilet and during each cycle of operation of the toilet a record is made of the variation of each of the parameters that monitored by the sensors, and the set of records is stored in a memory.
  • Data in the memory can be read out or uploaded for detailed analysis, and the data can be presented graphically, in a table, or in other suitable manner for use by service people. The memory can be a removable memory such as a memory card, a floppy disk, a CDROM or other suitable storage medium, or the data can be transmitted wirelessly to a centrally located computer. Such transmission can be initiated automatically by the controller in case a malfunction has been diagnosed by the controller, or at the request of a service person or the centrally located computer, eg at regular intervals.
  • This allows a full and detailed diagnosis of the toilet as well as documentation of the status and history of the toilet. At the manufacturing stage each toilet is tested to meet the specifications, and a test report including an individual serial number is issued and supplied with the toilet as documentation to the customer. When an installed toilet is tested a test report can be issued. Such test reports can serve as a basis for demonstrating the history of the toilet, and in case of malfunction a test report serves as a basis of diagnosing the toilet and deciding on the proper action to be taken.
  • A service manual will typically be available to the service persons as a tool with instructions for interpreting the registered data, diagnosing and proposing remedy or repair. However, such instructions can also be stored in the controller or its memory, whereby the controller can propose one or more possible diagnoses and one or more possible repairs. The registered data may be used to localise the cause of the malfunction, and the faulty component can be identified both in the toilet itself and possibly also in the supply of water and in compressed air and in the sewer system receiving the discharged waste material form the toilet.
    • Brief description of the drawings
    • Figure 1 shows schematically shown a toilet of the invention and its functional components,
    • Figure 2 shows schematically the pressures in the air inlet to the toilet and in the tank during a cycle of operation of the toilet in figure 1, where the pressures are linked in time together with the opening and closing of valves during a cycle of operation of the toilet. Relative timing and the actual pressures are not necessarily drawn to scale.
    Detailed description of the invention
  • In figure 1 is shown a toilet with a toilet bowl 1. The toilet has an air inlet 11 that can be connected to a supply of compressed air eg in a vehicle, in which the toilet is to be installed. Compressed air passes a filter regulator 12. Likewise, the toilet has a water inlet 5 that can be connected to a supply of flushing water in the vehicle through a check valve 6. A valve block 14 comprises operating valves V1 - V5, which are controlled by a controller 21 to supply compressed air to pneumatically operated components of the toilet.
  • A tank 3 is connected to the toilet bowl 1 via a pneumatically operated inlet valve 2 that can allow waste material in the toilet bowl to flow into the tank 3. A vacuum generator 16, preferably in the form of an ejector, is driven by compressed air and is controllable to establish a vacuum, ie a subatmospheric pressure, in the tank 3.
  • A typical operating cycle of the toilet is as follows, where details may vary. In standby the inlet valve 2 to the tank 3 and the outlet valve 4 from the tank 3 are closed, and the tank 3 is vented to the ambient atmosphere through the ejector 16 and the open pinch valve 17. The water pump 7 is filled with water, and the flush valve 8 is closed. No electric current flows in the pneumatic valves V1 - V5 and the entire system is monitored by the controller 21.
  • When the toilet is activated by a user it enters a vacuum generating phase. The valve V1 is activated, and air flows to the ejector 16 and evacuates the tank to a predetermined vacuum. The valve V5 is activated and starts the water pump 7. The flush valve 8 is opened, and the toilet bowl is flushed with water through a distributor block and flush nozzles 10. When the predetermined vacuum is established in the tank, the valve V3 is activated and opens the inlet valve 2, whereby the atmospheric pressure forces the waste material including flush water into the tank 3. Then the inlet valve is again closed, and the waste material and the flush water are enclosed in the tank 3. Valve V2 closes the pinch valve 17 to make the tank a closed volume.
  • Next, the valve V1 is activated, and air flows to the ejector 16, but because the pinch valve 17 is closed the air flows into the tank to establish a superatmospheric pressure (ie higher than atmospheric pressure) in the tank 3. Now the outlet valve 4 is opened, and the pressure in the tank forces the waste material out of the tank 3 and into a collecting tank in the vehicle.
  • The toilet is now emptied, and the system again goes into standby. The spring in the pump 7 will again cause the pump to be filled with water.
  • So far the described toilet is known.
  • In addition to the above the toilet according to the invention has the following new features, which can also be implemented in toilets of different construction and function. The toilet has a first pressure sensor 13 that senses values of the air pressure in the air inlet, and a second pressure sensor 15 that senses values of the air pressure in the tank 3, both throughout each cycle of operation of the toilet. The controller 21 stores the sensed pressure values in a memory 20.
  • A switch 18, eg a reed switch, senses the open and closed states of the inlet valve 2. If desired, a corresponding switch can be arranged to sense the open and closed states of the outlet valve 4. Sensors may also be arranged to sense the actual active or passive state of the operating valves V1 - V5, or the electrical driving signals to each of the operating valves can be stored. A temperature sensor 19 senses the ambient temperature, and in case the ambient temperature drops below a predetermined temperature slightly above the freezing temperature of water, the controller will initiate an emptying cycle and prevent the use of the toilet until the temperature again rises to a safe value with no risk of freezing.
  • Stored data representing the values sensed by the one or more sensors (13, 15, 18, 19) can be processed in the controller 21, or the data can be transferred to a computer external to the toilet, eg to a centrally located computer. The memory 20 can be a solid state memory or a removable storage medium that is moved with the data, or the transfer can be a wired or wireless transmission.
  • In figure 2 is shown graphically the pressures in the air inlet and in the tank and the opening and closing of valves during a cycle of operation of the toilet of the invention. Graphic presentation of the data is better suited for visual inspection by humans than figures in tables, which are more suited for processing in a computer. The curves can be presented individually or as an average of several curves. The data can be processed to show tendencies over time, and statistical calculations etc. can be made.
  • In figure 2 is also shown the currents controlling the valves V1 - V5 in the valve block 14 and the signal from the reed switch 18 indicating the open or closed state of the inlet valve 2. The time scale is the same in both parts of the figure, whereby the relative timing of events becomes clear. In particular, the build-up of vacuum and pressure in the tank can be followed, and it can be determined if the capacity of the supply of compressed air is sufficient. In case of malfunction the error can be localised, and remedy of the malfunction can be suggested and carried out.
  • A toilet of the invention can have one or more, and any combination, of the sensors 13, 15, 18, 19 for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet 11, the air pressure in the tank 3, the ambient temperature, the open or closed state of the inlet valve 2, and the open or closed state of the outlet valve 4.
  • The toilet of the invention can have a wireless transmitter, eg operating on a public mobile telephone network such as GSM or UMTS based networks, and it can be arranged to transmit a use and status report at regular intervals or in case of malfunction. These reports are received centrally, and in case of malfunction of a toilet the carrying vehicle can be called for repair.

Claims (5)

  1. A toilet comprising
    - a toilet bowl (1),
    - a tank (3) with an inlet and an outlet,
    - an air inlet (11) for connecting to a source of compressed air,
    - a vacuum generator (16) driven by compressed air and controllable to establish a vacuum in the tank (3),
    - an inlet valve (2) between the toilet bowl (1) and the tank inlet, the inlet valve (2) being controllable, when a predetermined vacuum level is established in the tank (3), to allow flow between the toilet bowl (1) and the tank (3) so as to receive waste material from the toilet bowl (1) in the tank (3),
    - an outlet valve (4) controllable to allow discharging the received waste material in the tank (3) through the outlet of the tank,
    - a water inlet (5) for connecting to a source of water,
    - one or more sensors (13, 15, 18, 19) for sensing, during each cycle of operation of the toilet, the values of one or more of the air pressure in the air inlet (11), the air pressure in the tank (3), the ambient temperature, the open or closed state of the inlet valve (2), and the open or closed state of the outlet valve (4),
    - a memory (20),
    - a controller (21) adapted to control the operation of the toilet and to store, in the memory (20), data representing the values sensed by the one or more sensors (13, 15, 18, 19) during each cycle of operation of the toilet.
  2. A method for operating a toilet having
    - a toilet bowl (1),
    - a tank (3) with an inlet and an outlet,
    - an air inlet (11) connected to a source of compressed air,
    - a vacuum generator (16) driven by compressed air and controllable to establish a vacuum in the tank (3),
    - an inlet valve (2) between the toilet bowl (1) and the tank inlet, the inlet valve (2) being controllable to allow flow communication between the toilet bowl (1) and the tank (3) so as to receive waste material from the toilet bowl (1) in the tank (3),
    - an outlet valve (4) controllable to allow discharging the received waste material in the tank (3) through the outlet of the tank,
    - a water inlet (5) connected to a source of water,
    - one or more sensors (13, 15, 18, 19) for sensing the values of one or more of the air pressure in the air inlet (11), the air pressure in the tank (3), the ambient temperature, the open or closed state of the inlet valve (2), and the open or closed state of the outlet valve (4),
    - a memory (20),
    - a controller (21) adapted to control the operation of the toilet,
    the method comprising storing, in the memory (20), data representing the values sensed by the one or more sensors (13, 15, 18, 19) during each cycle of operation of the toilet.
  3. A method according to claim 2 comprising transferring stored data representing the values sensed by the one or more sensors (13, 15, 18, 19) to a computer external to the toilet.
  4. A method according to claim 2 or 3 wherein stored data representing the values sensed by the one or more sensors (13, 15, 18, 19) are presented graphically to show the variation of the values during one or more cycles of operation of the toilet.
  5. A method according to any one of claims 2 - 4 comprising performing statistical operations on the data.
EP05388065A 2005-08-12 2005-08-12 A vacuum toilet Withdrawn EP1752589A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05388065A EP1752589A1 (en) 2005-08-12 2005-08-12 A vacuum toilet
PCT/DK2006/000442 WO2007019854A1 (en) 2005-08-12 2006-08-11 A vacuum toilet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05388065A EP1752589A1 (en) 2005-08-12 2005-08-12 A vacuum toilet

Publications (1)

Publication Number Publication Date
EP1752589A1 true EP1752589A1 (en) 2007-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05388065A Withdrawn EP1752589A1 (en) 2005-08-12 2005-08-12 A vacuum toilet

Country Status (2)

Country Link
EP (1) EP1752589A1 (en)
WO (1) WO2007019854A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007131512A1 (en) * 2006-05-11 2007-11-22 Semvac A/S A vacuum toilet system and a method for controlling functions thereof
WO2008057076A1 (en) * 2006-11-06 2008-05-15 Airvac, Inc. Vacuum sewage system with wireless alarm
WO2010133448A1 (en) * 2009-05-19 2010-11-25 Airbus Operations Gmbh Wc monument comprising a receiving region for a mobile sanitary unit
CN102561488A (en) * 2012-01-12 2012-07-11 深圳市绿恒科技有限公司 Vacuum pollutant discharging device
RU2486089C2 (en) * 2010-09-03 2013-06-27 Общество С Ограниченной Ответственностью Научно-Производственный Центр "Экспресс" Wc complex
CN103303328A (en) * 2013-06-27 2013-09-18 宁波南车时代传感技术有限公司 Pneumatic control unit of excrement collecting system for bullet train
AT516581A1 (en) * 2014-12-04 2016-06-15 Walter Dipl Ing Lorenz Method for operating a vacuum toilet
US10001787B2 (en) 2014-06-02 2018-06-19 Aqseptence Group, Inc. Controller for vacuum sewage system
DE102018006919A1 (en) * 2018-08-31 2020-03-05 ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft Vacuum sewage device, method and electronic control unit for controlling a vacuum sewage device
DE202020001171U1 (en) 2020-03-22 2020-04-21 Global Fliegenschmidt Gmbh Device for emptying a toilet bowl with a suction valve in the outlet with a holding tank and a vacuum pump
WO2021094550A1 (en) * 2019-11-15 2021-05-20 Aco Severin Ahlmann Gmbh & Co. Kg Vacuum wastewater device and method
DE102021002000B3 (en) 2021-04-16 2022-07-21 Energietechnik Spreter GmbH Separating toilet with suction line

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DE202014003059U1 (en) * 2014-04-10 2015-07-31 Evac Gmbh Pneumatic compact vacuum toilet
CN111287297A (en) * 2020-03-20 2020-06-16 劲旅环境科技股份有限公司 Mobile toilet sewage discharge system and control method thereof
CN112660185B (en) * 2020-12-24 2024-08-06 湖南真创环保科技有限公司 Method for deodorizing and preventing virus transmission of locomotive toilet in emergency state
CN116356923A (en) * 2023-04-23 2023-06-30 黄河勘测规划设计研究院有限公司 Flushing method of low negative pressure suction pressure flushing type intelligent water-saving toilet

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WO1994016158A1 (en) * 1993-01-16 1994-07-21 Sanivac Vakuumtechnik Gmbh Device for controlling the operation of a vacuum toilet
US5644802A (en) * 1993-09-21 1997-07-08 Evac Ab Vacuum sewer arrangement

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WO1994016158A1 (en) * 1993-01-16 1994-07-21 Sanivac Vakuumtechnik Gmbh Device for controlling the operation of a vacuum toilet
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US5644802A (en) * 1993-09-21 1997-07-08 Evac Ab Vacuum sewer arrangement

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007131512A1 (en) * 2006-05-11 2007-11-22 Semvac A/S A vacuum toilet system and a method for controlling functions thereof
WO2008057076A1 (en) * 2006-11-06 2008-05-15 Airvac, Inc. Vacuum sewage system with wireless alarm
WO2010133448A1 (en) * 2009-05-19 2010-11-25 Airbus Operations Gmbh Wc monument comprising a receiving region for a mobile sanitary unit
CN102428002A (en) * 2009-05-19 2012-04-25 空中客车营运有限公司 WC monument comprising a receiving region for a mobile sanitary unit
US8424130B2 (en) 2009-05-19 2013-04-23 Airbus Operations Gmbh Toilet monument with receptacle for a mobile sanitary unit
CN102428002B (en) * 2009-05-19 2014-12-03 空中客车营运有限公司 WC monument comprising a receiving region for a mobile sanitary unit
RU2486089C2 (en) * 2010-09-03 2013-06-27 Общество С Ограниченной Ответственностью Научно-Производственный Центр "Экспресс" Wc complex
CN102561488A (en) * 2012-01-12 2012-07-11 深圳市绿恒科技有限公司 Vacuum pollutant discharging device
CN102561488B (en) * 2012-01-12 2015-05-06 深圳绿恒环保科技有限公司 Vacuum pollutant discharging device
CN103303328A (en) * 2013-06-27 2013-09-18 宁波南车时代传感技术有限公司 Pneumatic control unit of excrement collecting system for bullet train
CN103303328B (en) * 2013-06-27 2016-06-29 宁波南车时代传感技术有限公司 Motor-car feces collecting system pneumatic control unit
US10001787B2 (en) 2014-06-02 2018-06-19 Aqseptence Group, Inc. Controller for vacuum sewage system
AT516581A1 (en) * 2014-12-04 2016-06-15 Walter Dipl Ing Lorenz Method for operating a vacuum toilet
DE102018006919A1 (en) * 2018-08-31 2020-03-05 ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft Vacuum sewage device, method and electronic control unit for controlling a vacuum sewage device
WO2021094550A1 (en) * 2019-11-15 2021-05-20 Aco Severin Ahlmann Gmbh & Co. Kg Vacuum wastewater device and method
US20220403640A1 (en) * 2019-11-15 2022-12-22 Aco Ahlmann Se & Co. Kg Vacuum wastewater device and method
JP2023503262A (en) * 2019-11-15 2023-01-27 アーツェーオー アールマン エスエー ウント コー．カーゲー Vacuum wastewater device and method
DE202020001171U1 (en) 2020-03-22 2020-04-21 Global Fliegenschmidt Gmbh Device for emptying a toilet bowl with a suction valve in the outlet with a holding tank and a vacuum pump
DE102021002000B3 (en) 2021-04-16 2022-07-21 Energietechnik Spreter GmbH Separating toilet with suction line
EP4074904A1 (en) 2021-04-16 2022-10-19 Energietechnik Spreter GmbH Separation toilet with a suction line

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