EP4074905A1 - Sanitäranlage - Google Patents

Sanitäranlage Download PDF

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Publication number
EP4074905A1
EP4074905A1 EP22168038.2A EP22168038A EP4074905A1 EP 4074905 A1 EP4074905 A1 EP 4074905A1 EP 22168038 A EP22168038 A EP 22168038A EP 4074905 A1 EP4074905 A1 EP 4074905A1
Authority
EP
European Patent Office
Prior art keywords
bezel
bowl
interior volume
cover
sanitary
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.)
Pending
Application number
EP22168038.2A
Other languages
English (en)
French (fr)
Inventor
Michel Bendahan
Jean Louchet
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.)
Aerstop Oy
Original Assignee
Aerstop Oy
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 Aerstop Oy filed Critical Aerstop Oy
Publication of EP4074905A1 publication Critical patent/EP4074905A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/04—Special arrangement or operation of ventilating devices
    • E03D9/05—Special arrangement or operation of ventilating devices ventilating the bowl
    • E03D9/052—Special arrangement or operation of ventilating devices ventilating the bowl using incorporated fans
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K13/00—Seats or covers for all kinds of closets
    • A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
    • A47K13/30—Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
    • A47K13/302—Seats with cleaning devices

Definitions

  • the present invention relates to a sanitary.
  • Conventional toilets have a simple evacuation system consisting of a flush.
  • a flush When the flush is activated, a large quantity of water is supplied, creating turbulence and therefore a large aerosol; on the other hand, the momentary rise in the level of liquid in the bowl tends to propel outwardly the aerosols, created by the evacuation turbulences, which are located immediately above the bowl.
  • a grinder toilet is known, combining a conventional flush with a suction and grinding system located downstream, intended for installations that do not allow a diameter of the evacuation pipes sufficient for a conventional toilet. In terms of turbulence and aerosols, they do not have a decisive advantage over conventional toilets.
  • the patent US 3,266,060 describes a toilet comprising a bowl and a bezel bearing, on its underside, a bead which is said to form a barrier that is both airtight and watertight between the bezel and the bowl.
  • This document also describes a mechanism for triggering the flush when the lid is closed.
  • This patent also describes an anti-odor mechanism, which includes a fan that guides the air from the bowl to an exhaust channel. Raising the lid starts the fan.
  • the document WO 00/13,565 describes a toilet seat whose underside is provided with a UV tube which can be electrically powered to emit radiation with a wavelength of between 250 and 270 nm with a view to emitting radiation of the order of 30 mW /cm2. Actuation for a period of between 15 seconds and 15 minutes may be sufficient to obtain the desired decontamination effect. It is better to control the system so that the radiation is triggered with the lid closed, which can be done either by a sensor or by automating the closing.
  • the document also provides for a metal reflector to direct UV radiation in the right direction. There is no mention of waterproofing.
  • the document UK 2,384,009 describes a toilet seat whose inner face is provided with a "vacuum ring".
  • the vacuum ring is put under vacuum by a pump, which makes it possible to suck up the stale air present in the bowl.
  • the underside of the bezel may also include a switch that will activate the system when someone sits on it.
  • the ring can be placed on the upper surface of the bowl, at the interface with the bezel.
  • the document UK 2,442,727 describes a toilet that can be closed in a sealed manner in order to be decontaminated by a detergent.
  • the actuation of the detergent can be done after an automatic closing of the bowl, or following a detection that the bowl is properly closed, to prevent detergent from escaping outside the bowl.
  • Nozzles are arranged in the lid so as to emit the detergent into the closed sanitary ware.
  • the document US 2010/281,608 describes a toilet sanitary ware with a seal between the bowl and the seat, and a seal between the seat and the lid, so as to close the sanitary ware in an airtight manner.
  • this seal is to suck in, via a duct extending between an end opening into the bowl above the water level, and a discharge pipe, the air stale present in the space above the water level inside the bowl.
  • an actuation button will trigger the operation of irradiation devices located outside, which will generate UV-C radiation with a view to generating ozone, and a fan will blow the ozone-laden air in the toilet bowl in order to decontaminate it.
  • the system can work 5 to 10 minutes after actuation.
  • the lid must be closed during disinfection, and a sensor can be used to detect this closure.
  • an automatic closing system can be envisaged.
  • the irradiation device and the fan are replaced by a reservoir full of overpressure ozone, the opening of which is triggered at the appropriate time, so that the ozone reaches the bowl.
  • the document CN111317391 essentially describes a system for deactivating viruses and microorganisms present in the toilet bowl, and capable of forming aerosols. This treatment is carried out by the application of a high voltage. More precisely, the high voltage will ionize the oxygen present in the air, and this ionized oxygen would have a biocidal effect.
  • the document insists on the tightness between the components.
  • a seal is provided between the cover body and the upper surface of the bowl.
  • the seal has the effect of preventing the spread of the virus beyond the sanitary facilities.
  • the document also mentions the automation of the steps of closing the cover, triggering the high voltage, and flushing, by means of a controller.
  • the present invention relates to a system for preventing and protecting against aerosols from the toilet bowl, likely to carry pathogenic germs.
  • the sanitary unit further comprises a lid, and a seal disposed between the bezel and the lid in the lowered position of the lid, and in contact with the bezel and the lid to form a seal between the bezel and the lid .
  • the toilet comprises a drain water reservoir controlled to alternately release drain water or retain it.
  • the suction system is controlled to draw air from the interior volume in addition during the release of the evacuation water.
  • the actuation command of the water tank or the release of the evacuation water is adapted to trigger the actuation system of the suction system.
  • the detection of the lowered configuration of the bowl authorizes the release of the actuation control of the water tank or triggers the release of water contained in the water tank.
  • the sanitary unit further comprises a non-return valve adapted to allow ambient air to pass to the interior volume, and to prevent air from passing from the interior volume to the exterior.
  • the suction system is controlled by a depression sensor adapted to determine that the interior volume is under depression.
  • the toilet further comprises a system for locking the cover in the lowered position, suitable for passing from one configuration active in which it prohibits the passage of the cover from the lowered position to a raised position to a passive configuration in which it allows the passage of the cover from the lowered position to a raised position.
  • the passage of the locking system from the active configuration to the passive configuration, or the authorization of this passage is controlled by a depression sensor adapted to determine that the interior volume is under depression.
  • the sanitary facility comprises in the open a UV radiation system adapted to be controlled to implement physical decontamination of the interior volume, and/or a chemical decontamination system adapted to be controlled to implement chemical decontamination of the volume interior.
  • the locking system is prohibited from changing from its active configuration to its passive configuration when the UV radiation system and/or the chemical decontamination system is functional.
  • the activation of the UV radiation system and/or of the chemical decontamination system is controlled by a depression sensor adapted to determine that the interior volume is under depression.
  • the invention relates to a bezel, a cover, or a bezel/cover assembly of such sanitaryware.
  • the object of the present invention is to reduce the production and dispersion of aerosols during use, then at the time of the action of the flush and after the evacuation of the toilet. It is intended primarily to limit the airborne transmission of SARS-CoV-2, but is directly transposable to any other airborne pathogen.
  • the figure 1 schematically represents a sanitary 1 capable of being used for the implementation of the invention.
  • Sanitary 1 comprises a basin 2.
  • the basin 2 is for example carried by a foot 3 placed on the ground and fixed thereto. Alternatively, the sanitary could be attached to the back wall.
  • the bowl 2 comprises an outer wall 4 defining a hollow interior volume capable of receiving, in normal use, a liquid.
  • Bowl 2 comprises an upper opening (not visible on the figure 1 , because closed by the bezel and the lid which will be described below), allowing access to the hollow interior volume.
  • Bowl 2 also includes a drain allowing the liquid present in the bowl to be evacuated.
  • the outer wall 4 comprises an inner face facing the inner volume, and an outer face 5 opposite. According to the embodiment shown, the outer face 5 has a flared shape upwards.
  • Sanitary 1 also includes a bezel 6.
  • the bezel 6 includes a thin annular plate provided with a central opening 10, visible on the figure 2 .
  • the annular plate has a lower face 11 and an opposite upper face.
  • the bezel 6 comprises a seal 12.
  • the seal 12 is arranged on the lower face 11. It is continuous and defines a closed geometric figure. In particular, it surrounds the central opening 10. It is made of a suitable material, for example elastomer.
  • the bezel 6 is mounted to move relative to the bowl 2 between a lowered configuration and a raised configuration.
  • the mobility is for example a pivoting relative to a horizontal axis situated at the rear of the upper face of the bowl.
  • the bezel 6 rests on the bowl, with the central opening in communication with the hollow interior volume.
  • the underside of the bezel 6 and the gasket 12 bear against the upper face of the bowl 2.
  • the upper face of the bezel 6 faces upwards.
  • bezel 6 extends with its lower face remote from the upper face of bowl 2, for example vertically.
  • Sanitary 1 also includes a cover 7.
  • Cover 7 includes a solid thin annular plate.
  • the annular plate has a lower face 13 and an opposite upper face 14.
  • the cover 7 comprises a seal 28.
  • the seal 12 is arranged on the lower face 11. It is continuous and defines a closed geometric figure. In particular, it is arranged so as to face the upper face of bezel 6, as will be described in detail below. It is made of a suitable material, for example elastomer.
  • the lid 7 is mounted to move relative to the bowl 2 between a lowered configuration and a raised configuration.
  • the mobility is for example a pivoting relative to a horizontal axis situated at the rear of the upper face of the bowl. Where appropriate, this is the same pivot axis as that of the bezel 6.
  • the bezel 6 is arranged between the cover 7 and the bowl 2. In the lowered configuration, the cover 7 bears against the bezel 6, so as to block the central opening.
  • the underside of the cover 7 and the gasket 28 bear against the upper face of the bezel 6.
  • the upper face of the cover faces upwards.
  • the cover 7 In the raised configuration, the cover 7 extends with its lower face remote from the upper face of the bowl 2. In the raised configuration, the cover 7 allows mobility of the bezel 6 between its own lowered and raised configurations. In the raised configuration of bezel 6 and cover 7, the upper face of bezel 6 can be in contact with the lower face of cover 7.
  • Sanitary 1 also comprises a water reservoir 8 in fluid communication with bowl 2.
  • water reservoir 8 opens into the bowl above the level of water 15 contained therein.
  • Sanitary 1 includes a control 9 for triggering the flow of water contained in water tank 8 in the direction of bowl 2.
  • Water tank 8 is hydraulically connected to a water supply, so as to be filled after having been emptied.
  • the sanitary 1 comprises a suction system 16 of the fluids of the bowl 2 above the water level.
  • the suction system 16 comprises for example a conduit 17 passing through the outer wall 4, between one end opening into the interior volume 18 above the water level 15, and a second end (not shown) outside.
  • the suction system 16 also comprises a pump 19 or other system adapted to suck from the interior volume 18 via the conduit 17.
  • the toilet 1 may comprise a system for locking the bezel and/or the cover in the lowered configuration.
  • the example presented in particular comprises a system for locking the cover in the lowered configuration, whereby the bezel placed between the bowl and the cover is also blocked.
  • the locking system 20 is a reversible locking system.
  • the locking system 20 can be a clipping system.
  • the clipping system takes advantage of the flared shape at the top of the bowl.
  • the clipping system can include an elastically deformable arm 21, and carried by the cover 7.
  • the figure 1 has an arm 21 disposed at the front of the cover 7.
  • the number, position and configuration of the arms may vary.
  • the locking system may comprise a rigid or semi-rigid hoop or a system of rotating or sliding locks combined with a clamping device, either in a strap and a hooking system, making it possible to secure the tank, the bezel and the lid.
  • the toilet 1 also comprises a non-return valve 22 adapted to, in the lowered configuration of the lid 7, allow the passage of ambient air from outside the sanitary to the interior volume 18, but prevent a passage gas in the opposite direction.
  • the non-return valve 22 is arranged on the lid 7, and passes through the thin plate constituting the lid 7.
  • the non-return valve 22 could be arranged elsewhere, in particular in the bowl 2 above the level of water 15.
  • the sanitary 1 also comprises an ultraviolet radiation system 23.
  • the sanitary 1 comprises in particular a lamp 24 emitting ultraviolet radiation, capable of emitting the radiation in the interior volume 18.
  • the lamp 24 is arranged on the lower face 13 of the cover 7.
  • the ultraviolet radiation system 23 also comprises an electrical power supply system supplying energy to the lamp 24.
  • the sanitary 1 can comprise a chemical disinfection system 25 suitable for dispensing disinfectant antiseptic chemical products 25 into the interior volume 18.
  • the chemical disinfection system 25 can for example comprise a nozzle opening into the interior volume 18 , and adapted to dispense a disinfectant chemical contained in a reservoir (not shown).
  • the system which has just been described can be controlled by a controller.
  • the water tank 8 is connected to the controller, so that the controller receives information relating to the filling level of the water tank 8.
  • the command 9 of the water tank 8 can be connected to the controller, so that the controller receives information relating to the actuation of the command 9.
  • the suction system 16 can be connected to the controller so as to receive a command to trigger the suction system.
  • the controller can generate this command for example according to information relating to the level of the water tank and/or relating to the actuation of the command.
  • the command may include a time delay, that is to say a start of triggering of the suction system after a predetermined duration after the generating event and/or for a predetermined duration depending on the generating event.
  • a sensor 26 is used to determine that the interior volume 18 is hermetically sealed.
  • This sensor 26 is for example part of the locking system 20, and detects that the locking system 20 is in the locked configuration.
  • the sensor 26 detects a horizontal position of the lid 7.
  • Other embodiments are possible.
  • the sensor 26 is connected to the controller, so that the controller receives information relating to the closure of the interior volume 18.
  • the water tank 8 or the command 9 can be connected to the controller so as to receive a command to trigger the water tank.
  • the controller can generate this command for example according to information relating to the closing of the interior volume 18. For example, if the interior volume 18 is not closed, a blocking system prevents actuating the command 9, this blocking system being released by the detection of the closure of the interior volume 18.
  • the sanitary 1 does not include an external command for draining the water tank, but an internal command, not accessible to a user, and controlled by the controller.
  • a component can be connected to the controller so that the controller receives information relating to the conditions prevailing in the interior volume. It may for example be a pressure sensor, suitable for measuring an ambient pressure of the gases present in the interior volume.
  • the pressure sensor is for example fixed to the bowl 2 or to the inner face of the lid 7.
  • a sensor of the non-return valve 22 detecting a closing of the non-return valve.
  • the chemical disinfection system 25 can be connected to the controller so as to receive a command to trigger the chemical disinfection system 25.
  • the controller can generate this command, for example according to information relating to the conditions regulating in the interior volume 18. For example, if the interior volume 18 is under depression, or the non-return valve is open, the controller commands the chemical disinfection system 25 to dispense disinfectant chemical.
  • the chemical disinfection system can be sealed off by a sealing system sensitive to the surrounding pressure, so that at atmospheric pressure, or at a higher pressure, the system is sealed off and, in the event of a depression, the system is open, allowing the dispensing of a disinfection fluid.
  • the disinfection chemical system 25 can deliver the disinfection fluid to the water tank 8.
  • the UV radiation system 23 can be connected to the controller so as to receive a command to trigger the UV radiation system.
  • the controller can generate this command for example according to information relating to the conditions regulating in the internal volume 18. For example, if the internal volume 18 is under depression, or if the non-return valve is open, the controller commands the UV radiation system 23 to dispense disinfectant chemical.
  • the toilet 1 can be prevented from being used during the action of the UV radiation system 23 or of the chemical disinfection system 25.
  • the controller can be connected to the door lock to prevent the unlocking of the lock from the outside if the UV radiation system 23 and/or the chemical disinfection system 25 are working.
  • This system is to be coupled with a presence detector which confirms the absence of anyone in the room before locking the door and controlling the triggering of the UV radiation system 23 and/or the chemical disinfection system 25.
  • the locking system 20 is controlled by the controller.
  • the controller sends a command to release the locking system 20 after the action of the UV radiation system 23 and/or the chemical disinfection system 25.
  • the end of this action can be determined by means of a time delay from the instant of emission of the actuation command of the UV radiation system 23 and/or of the chemical disinfection system 25, or by detection that the system is no longer active by means of a dedicated sensor.
  • a sensor 27 is used to determine that the toilet is being used by a user seated on the bezel.
  • This sensor 27 is for example arranged on the lower face 11 of the bezel 6 in contact with the upper face of the bowl, and detects a mass greater than the combined masses of the bezel 6 and the cover 7.
  • the sensor 27 is connected to the controller , so that the controller receives information relating to the occupation of the bezel 6.
  • the suction system 16 can be connected to the controller so as to receive a command to trigger the suction system 16.
  • the controller can generate this command for example according to information relating to the occupation of the bezel 6. For example, if bezel 6 is occupied, the controller triggers the actuation of the suction system 16.
  • the various sensors and systems, as well as the controller described above are supplied with energy, and connected together so as to be able to exchange information and commands.
  • a mechanism can be used instead of a controller to control a chain of reaction from an event to an action that results from it.
  • Sanitary 1 is available for use. Water tank 8 is full. The UV radiation 23 and chemical disinfection 25 systems are not operational. The lid 7 is raised, and the bezel 6 lowered. If the cover 7 and the bezel 6 are not in this configuration, nothing prevents the user from placing them there.
  • the sensor 27 detects this presence, and sends the information to the controller which triggers the suction system 16.
  • the suction system 16 then sucks air from the interior volume.
  • the suction system 16 continues to operate due to a time delay.
  • the user lowers the cover 7 on the bezel 6, and the locking system 20 switches to the locked configuration. If necessary, a mechanism moves the lid 7 in the lowered configuration. Seals 12 and 28 are then compressed. The suction continues through the non-return valve 22 which allows the entry of ambient air into the interior volume.
  • the detection of the lowered configuration and/or the locked state of the locking system 20 by the controller authorizes the release of the command 9 for actuating the water tank 8 or, alternatively, triggers the release of the water contained in the water tank 8 This implies that this control or water release is prohibited with the lid up or the locking system 20 unlocked.
  • the action of the flush first causes an overpressure of air, followed by a depression at the time of siphoning.
  • the disinfection chemical system 25 and/or the UV radiation system 23 are triggered by the appropriate detection, as shown above.
  • the depression sensor which detects that the interior volume is no longer under depression, authorizes the unlocking of the lid locking system.
  • the controller receives information relating to the position of the bezel and information from the depression sensor, and deactivates the unlocking system on the basis of these two pieces of information.
  • the controller receives information from the depression sensor, and deactivates the unlocking system based on this information.
  • the depression sensor can only detect the end of the depression phenomenon with the lid, and therefore bezel, closed.
  • the scenario presented above is reproduced, except that the actuation of the suction system is not triggered by the detection of the occupation of the bezel.
  • the actuation of the suction system is triggered either by the lowering of the lid, or by the passage of the locking system in the locked position, or by the actuation command of the water tank, or by the detection of the release of water from the water tank, or by the detection of a predetermined variation in pressure inside the bowl resulting from the release of water, each of these alternatives being authorized only with the window down.
  • the controller receives information relating to the position of the bezel and information relating to the release of the evacuation water, and triggers the suction system on the basis of these two pieces of information.
  • the controller receives information relating to the release of the evacuation water, and triggers the suction system based on this information.
  • This alternative embodiment can be implemented if the actuation of the release of the evacuation water is only authorized with the lid down, and therefore with the bezel down.
  • the device that is the subject of this patent aims both to prevent the diffusion of odors and aerosols liable to be vectors of pathogenic germs.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
EP22168038.2A 2021-04-13 2022-04-12 Sanitäranlage Pending EP4074905A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2103803A FR3121692A1 (fr) 2021-04-13 2021-04-13 Sanitaire

Publications (1)

Publication Number Publication Date
EP4074905A1 true EP4074905A1 (de) 2022-10-19

Family

ID=76375205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22168038.2A Pending EP4074905A1 (de) 2021-04-13 2022-04-12 Sanitäranlage

Country Status (2)

Country Link
EP (1) EP4074905A1 (de)
FR (1) FR3121692A1 (de)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266060A (en) 1963-09-20 1966-08-16 Clarence A Springer Flushing and ventilating toilet unit
US4094023A (en) * 1975-12-11 1978-06-13 Smith Donald L Ventilated toilet seat
GB2143872A (en) * 1983-07-26 1985-02-20 John Headley Billing Ventilating W.C. pans
EP0223764A2 (de) 1985-04-04 1987-05-27 Marc Louis Toilette mit Evakuierung unter Druck
GB2256206A (en) * 1991-05-31 1992-12-02 Gary Daniel Denham Lavatory seat cover
WO2000013565A1 (de) 1998-09-08 2000-03-16 Lumpert Juerg B Toilette
GB2384009A (en) 2002-01-15 2003-07-16 Jonathan Godfrey Toilet ventilation assembly
CA2347273C (en) * 2001-05-11 2004-07-20 Kim Hong Min System for directly venting odour air from toilet bowl
US20050138721A1 (en) * 2003-11-21 2005-06-30 Lascaris Ltd. Lavatory seat sealing system
GB2442727A (en) 2006-09-01 2008-04-16 Elizabeth Paul Self cleaning toilet
US20100281608A1 (en) 2009-05-08 2010-11-11 Alexander James L Systems and method for ventilating a toilet
WO2015089722A1 (zh) * 2013-12-17 2015-06-25 郑卯吉 马桶式抽气吸引助排便装置
US20160312454A1 (en) 2015-04-22 2016-10-27 Duravit Aktiengesellschaft Water closet
US9808132B2 (en) * 2015-07-17 2017-11-07 Lee E. Smith Ventilation assembly
CN111317391A (zh) 2020-02-14 2020-06-23 哈尔滨权清科技服务有限责任公司 能杀死传染性病毒并阻止其扩散的马桶盖及马桶

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266060A (en) 1963-09-20 1966-08-16 Clarence A Springer Flushing and ventilating toilet unit
US4094023A (en) * 1975-12-11 1978-06-13 Smith Donald L Ventilated toilet seat
GB2143872A (en) * 1983-07-26 1985-02-20 John Headley Billing Ventilating W.C. pans
EP0223764A2 (de) 1985-04-04 1987-05-27 Marc Louis Toilette mit Evakuierung unter Druck
GB2256206A (en) * 1991-05-31 1992-12-02 Gary Daniel Denham Lavatory seat cover
WO2000013565A1 (de) 1998-09-08 2000-03-16 Lumpert Juerg B Toilette
CA2347273C (en) * 2001-05-11 2004-07-20 Kim Hong Min System for directly venting odour air from toilet bowl
GB2384009A (en) 2002-01-15 2003-07-16 Jonathan Godfrey Toilet ventilation assembly
US20050138721A1 (en) * 2003-11-21 2005-06-30 Lascaris Ltd. Lavatory seat sealing system
GB2442727A (en) 2006-09-01 2008-04-16 Elizabeth Paul Self cleaning toilet
US20100281608A1 (en) 2009-05-08 2010-11-11 Alexander James L Systems and method for ventilating a toilet
WO2015089722A1 (zh) * 2013-12-17 2015-06-25 郑卯吉 马桶式抽气吸引助排便装置
US20160312454A1 (en) 2015-04-22 2016-10-27 Duravit Aktiengesellschaft Water closet
US9808132B2 (en) * 2015-07-17 2017-11-07 Lee E. Smith Ventilation assembly
CN111317391A (zh) 2020-02-14 2020-06-23 哈尔滨权清科技服务有限责任公司 能杀死传染性病毒并阻止其扩散的马桶盖及马桶

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