EP2143848A1 - Luftabsaugvorrichtung für toilettenablaufkanal - Google Patents

Luftabsaugvorrichtung für toilettenablaufkanal Download PDF

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Publication number
EP2143848A1
EP2143848A1 EP08738793A EP08738793A EP2143848A1 EP 2143848 A1 EP2143848 A1 EP 2143848A1 EP 08738793 A EP08738793 A EP 08738793A EP 08738793 A EP08738793 A EP 08738793A EP 2143848 A1 EP2143848 A1 EP 2143848A1
Authority
EP
European Patent Office
Prior art keywords
toilet
drainage channel
air
air suction
flush water
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Withdrawn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
EP08738793A
Other languages
English (en)
French (fr)
Other versions
EP2143848A4 (de
Inventor
Naokazu Onishi
Ken Higuchi
Masafumi Fukagawa
Keisuke Hiraide
Yuji Saito
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.)
Lixil Corp
Original Assignee
Inax Corp
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 Inax Corp filed Critical Inax Corp
Publication of EP2143848A1 publication Critical patent/EP2143848A1/de
Publication of EP2143848A4 publication Critical patent/EP2143848A4/de
Withdrawn legal-status Critical Current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
    • E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
    • E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/12—Swivel-mounted bowls, e.g. for use in restricted spaces slidably or movably mounted bowls; combinations with flushing and disinfecting devices actuated by the swiveling or sliding movement of the bowl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/18—Siphons
    • 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
    • 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 an air suction device for toilet drainage channel.
  • Patent Document 1 discloses one of conventional air suction devices for toilet drainage channel.
  • the air suction device is provided with air suction means for sucking air from a toilet drainage channel connected to the downstream side of a water sealing part of a toilet body.
  • a bypass pipe is connected to a water supply pipe which supplies flush water into a toilet bowl of the toilet body.
  • the bypass pipe is provided with an ejector generating negative pressure.
  • the air suction means has the ejector and a suction tank connected between the ejector and the toilet drainage channel.
  • the suction tank has an interior partitioned into an outside of a bellows (a first chamber) and an inside of the bellows (a second chamber).
  • the first chamber communicates with the ejector
  • the second chamber communicates with the toilet drainage channel.
  • a flush valve is provided on the water supply pipe located upstream of the bypass pipe.
  • the flush water Upon actuation of the flush valve in the air suction device, the flush water is caused to flow through the water supply pipe for a predetermined time thereby to be supplied into the toilet bowl. Since the flush water also flows through the bypass pipe into the ejector in this case, air in the first chamber of the suction tank is sucked by the ejector. As a result, the bellows in the suction tank is expanded. Air is sucked from the toilet drainage channel into the second chamber in the course of expansion of the bellows. An air suction step is thus carried out thereby to cause a siphon action.
  • the delivery of the flush water to the water supply pipe is stopped upon lapse of a predetermined time, whereby the supply of flush water to the toilet bowl is terminated.
  • This allows the water supply pipe downstream of flush valve, the bypass pipe and the first chamber to be open to the atmosphere, whereupon the bellows in the suction tank is contracted. Air in the second chamber is discharged into the toilet drainage channel in the course of contraction of the bellows. An air discharge step is thus carried out.
  • the air suction device has a simple construction.
  • the siphon action is caused under the condition where an amount of flush water supplied into the toilet bowl is small since the air suction step is carried out concurrently with the supply of flush water into the toilet bowl in the above-described conventional air suction device for toilet drainage channel. Accordingly, the siphon action is weaker than a siphon action caused with the use of potential energy obtained by supplying flush water into the toilet bowl so that a water level becomes sufficiently high in the toilet bowl. In this case, there is a possibility that sewage may insufficiently be discharged from the toilet bowl to the toilet drainage channel.
  • the siphon action caused by execution of the air suction step is terminated by discharging almost all flush water in the toilet bowl into the toilet drainage channel such that a water sealing part is broken. In this case, a breaking sound is produced.
  • the present invention was made in view of the foregoing conventional circumstances and the subject matter thereof is to provide an air suction device for a toilet drainage channel, which can perform good and silent toilet flushing.
  • the present invention provides an air suction device for a toilet drainage channel, provided with an air suction unit which sucks air from a toilet drainage channel connected to a downstream side of a water sealing part of a toilet body, the air suction unit having a negative pressure generator and a suction tank connected between the negative pressure generator and the toilet drainage channel, the air suction device comprising a control device which controls execution of an air suction step in which air is sucked from the toilet drainage channel by the suction tank and execution of a air discharge step in which the air is discharged into the toilet drainage channel by the suction tank, wherein the control device executes the air suction step after start of flush water supply to a toilet bowl of the toilet body and the air discharge step before termination of the flush water supply to the toilet bowl of the toilet body.
  • the air suction is executed in the state where a water level in the toilet bowl is sufficiently high after flush water supply to the toilet bowl, so that a siphon action is caused. Consequently, the siphon action is rendered stronger with the use of potential energy obtained by a rise of the water level in the toilet bowl, whereupon sewage can reliably be discharged into the toilet drainage channel.
  • the discharge flow is broken as the result of increase in an amount of air in the toilet drainage channel such that the siphon action can be terminated. In this case, no breaking sound is produced since the water sealing part is not broken.
  • the air suction device for the toilet drainage channel according to the invention can perform good and silent toilet flushing.
  • the control device executes the air discharge step while a discharge flow due to a siphon action is continuous in the toilet drainage channel after supply of the flush water into the toilet bowl.
  • the siphon action can reliably be terminated by the execution of the air discharge step.
  • the control device executes the air drainage step after the flush water supply to the toilet bowl has been interrupted and before the flush water supply to the toilet bowl is re-started for formation of a water sealing part. In this case, since the siphon action is reliably terminated, a water sealing part with a predetermined water level can be formed.
  • the suction tank has an interior partitioned into a first chamber and a second chamber by a diaphragm movable in an upward and/or a downward direction defined during installation of the suction tank, and that the first chamber is connected to the negative pressure generator and the second chamber is connected to the toilet drainage channel.
  • the siphon action can stably be caused since a predetermined amount of air is sucked from the toilet drainage channel according to an interior volume of the suction tank. Furthermore, the interior of the suction tank is divided into the first and second chambers by the diaphragm, and only the second chamber communicates with the toilet drainage channel, whereby the flush water containing sewage, air containing a foul odor and the like are reliably prevented from flowing into the negative pressure generator side.
  • Various negative pressure generators can be used only if these generators can generate negative pressure.
  • a mechanical pump or the like may be used other than the ejector which generates negative pressure by supplying flush water.
  • Embodiments 1 and 2 of a western flushing toilet will be described with reference to the drawings.
  • the air suction device for the toilet drainage channel in accordance with the present invention is applied to the flushing toilet.
  • the western flushing toilet of embodiment 1 comprises a toilet body 1 and a toilet flushing device S as shown in FIG. 1 .
  • a toilet seat and a toilet lid are eliminated in the drawings.
  • the toilet body 1 has a rim 3 formed along an upper inner periphery of a toilet bowl 2.
  • the toilet body 1 is formed with an upward flow path 2b extending upward from a lower end of the toilet bowl 2 and with a water sealing part 4 located in a lower interior of the toilet bowl 2.
  • the upward flow path 2b of the toilet body 1 is connected to a connecting pipe, in which a toilet drainage channel 5, a dwell part 6 and a drain outlet 7 are defined.
  • the toilet flushing device S comprises a flush water supplying device 100 and an air suction device 200 for the toilet drainage channel 5.
  • the flush water supplying device 100 comprises a water conduit 10 connected to a water pipe and a first on-off valve V1 opening and closing the water conduit 10.
  • the water conduit 10 communicates with a water shutoff valve V5 of a water pipe drawn out of a floor or wall surface of a toilet room in which the toilet body 1 is installed. Furthermore, a strainer device 11 incorporated with a water stop valve and a strainer and a constant flow rate valve 12 are provided upstream of the first on-off valve V1, and a vacuum breaker 13 is provided downstream of the first on-off valve V1.
  • An ejector 30 serving as a negative pressure generator has an inlet 31 connected to a part of the water conduit 10 located downstream of the vacuum breaker 13.
  • the ejector 30 has an outlet 32 to which an inlet 21 of a tank 20 is connected, so that flush water stored in the tank 20 can be caused to flow through an outlet 22.
  • the tank 20 has an inflow chamber 25 communicating with the inlet 21 and an outflow chamber 26 which has a bottom communicating with the inflow chamber 25 and communicates with the outlet 22.
  • the inflow chamber 25 is provided with an atmospheric port 23 to which the second on-off valve V2 is connected.
  • the inflow chamber 25 includes a swirl chamber 29 into which flush water is discharged from a nozzle 50 communicating with the outlet 32 of the ejector 30 such that a swirl flow is formed.
  • a delivery pipe 40 which extends to the rim 3 of the toilet body 1.
  • the ejector 30 has a suction port 33 communicating with the outside.
  • the suction port 33 draws flush water from the outlet 32 thereby to suck air thereinto.
  • the air suction device 200 of the toilet drainage channel 5 has a negative pressure storage tank 70, a suction tank 80 and the like as will be described below.
  • the suction port 33 of the ejector 30 communicates, via a first connecting pipe 110 provided with a check valve 111, with the negative pressure storage tank 70 storing the negative pressure. Accordingly, the ejector 30 constituting a water supply unit of the flush water supplying device 100 is also used for the air suction device 200.
  • a second connecting pipe 120 is branched from the first connecting pipe 110 located nearer to the negative pressure storage tank 70 than the check valve 111 is.
  • the second connecting pipe 120 is provided with a third on-off valve V3 located midway therethrough and communicates with the outside.
  • a third connecting pipe 130 is also branched from the first connecting pipe 110 and provided with a fourth on-off valve V4 located midway therethrough.
  • the third connecting pipe 130 communicates with the suction tank 80 which sucks air from the toilet drainage channel 5.
  • the suction tank 80 has an interior partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83 which is movable in an upward and/or a downward direction defined during installation thereof.
  • the first chamber 81 communicates with the third connecting pipe 130, and the second chamber 82 communicates with the toilet drainage channel 5 via a suction pipe 90.
  • the on-off timing and the on-off period of each of the first, second, third and fourth on-off valves V1, V2, V3 and V4 are controlled by a control device C. Since the second, third and fourth on-off valves V2, V3 and V4 are for use with air, the valves V2, V3 and V4 are not subjected to a large pressure, whereupon these valves can be rendered smaller than on-off valves for use with water and is designed so as to be opened and closed with a smaller force.
  • the suction device 200 of the toilet drainage channel 5 comprises the ejector 30, the first connecting pipe 110, the check valve 111, the negative pressure storage tank 70, the second connecting pipe 120, the third on-off valve V3, the third connecting pipe 130, the fourth on-off valve V4, the suction tank 80, the suction pipe 90 and the control device C.
  • the flush water supplying device comprises the water conduit 10, the strainer device 11, the constant flow rate valve 12, the first on-off valve V1, the vacuum breaker 13, the ejector 30, the nozzle 50, the tank 20, the second on-off valve V2, the delivery pipe 40, the first connecting pipe 110, the second connecting pipe 120, the third on-off valve V3 and the control device C.
  • the first, second, third and fourth on-off valves V1, V2, V3 and V4 are closed during non-flushing before time t1.
  • flush water is stored in the tank 20.
  • the diaphragm 83 in the suction tank 80 is in abutment with a lower inner wall surface of the suction tank 80.
  • the first on-off valve V1 is opened by the control device C.
  • flush water flowing though the connecting pipe 10 further flows through the ejector 30 into the swirl chamber 29.
  • the ejector 30 sucks air in the negative pressure storage tank 70 through the first connecting pipe 110 and the check valve 111.
  • the sucked air flows into the swirl chamber 29 together with flush water. Since the flush water is swirled in the swirl chamber 29, air contained in the flush water is separated successfully thereby to be stored in an upper interior of the inflow chamber 25.
  • negative pressure is gradually stored in the negative pressure storage tank 70, and the water level in the inflow chamber 25 is gradually lowered by an amount corresponding to the air sucked from the negative pressure storage tank 70.
  • the flush water supplied from the water conduit 10 and the flush water stored in the tank 20 whose amount corresponds to the amount of air sucked from the negative pressure storage tank 70 are supplied through the delivery pipe 40 into the rim 3.
  • the flush water supplied into the rim 3 flows downward while swirling along an inner surface of the toilet bowl 2, thereby forming a swirl flow. Sewage is collected by the swirl flow to a central part of the toilet bowl 2.
  • Toilet paper is unhardened and fitted with flush water, being dispersed into the flush water.
  • the fourth on-off valve V4 is opened at time t2 in FIG. 3 by the control device C.
  • the negative pressure in the negative pressure storage tank 70 is transmitted through the first connecting pipe 110, the third connecting pipe 130 and the fourth on-off valve V4 to the first chamber 81 of the suction tank 80, whereupon the pressure in the first chamber 81 becomes negative.
  • flush water is continuously supplied into the ejector 30, air in the first chamber 81 is also sucked by the ejector 30. Consequently, the diaphragm 83 in the suction tank 80 is rapidly lifted upward by the negative pressure in the negative pressure storage tank 70 in the beginning of the opening of the fourth on-off valve V4.
  • the diaphragm 83 is slowly lifted upward only by the ejector 30 until the diaphragm 83 abuts against the upper inner wall surface of the suction tank 80.
  • the water level in the toilet bowl 2 is rendered sufficiently high by the flush water having been supplied into the toilet bowl 2 at the toilet bowl flushing step, whereupon the water head difference between the water level in the toilet bowl 2 and a highest portion 4a of the water sealing part 4 is sufficiently large.
  • the potential energy of the flush water due to the water head difference and air suction from the toilet drainage channel 5 cause the flush water in the toilet bowl 2 to rush into the toilet drainage channel 5, whereby the toilet drainage channel 5 is filled with the flush water promptly such that a strong siphon action is produced. Accordingly, a discharge flow can promptly be formed by a smaller amount of flush water.
  • the filled state of the toilet drainage channel 5 to cause the siphon action is achieved not only by the state of the toilet drainage channel 5 completely filled with flush water but also a state where pressure balance is maintained between the upstream side and the downstream side of the toilet drainage channel 5 and the discharge flow is caused, and the filled state of the toilet drainage channel 5 includes the case where air remains in the toilet drainage channel 5.
  • sewage centrally collected in the toilet bowl 2 by the swirl flow formed in the toilet bowl 2 is reliably discharged to the toilet drainage channel 5 with the flush water discharged to the toilet drainage channel 5 by the siphon action.
  • the toilet drainage channel 5 is disconnected from the downstream side by the retaining portion 6 such that the toilet drainage channel 5 is a closed space existing between the water sealing 4 and the retaining portion 6. Accordingly, since a predetermined amount of air can reliably be sucked from the toilet drainage channel 5, the siphon action can be caused.
  • the interior of the suction tank 80 is divided by the diaphragm 83 into the first and second chambers 81 and 82, and only the second chamber 82 communicates with the toilet drainage channel 5. Accordingly, the flush water containing sewage, the air containing foul odor and the like are reliably prevented from entering the negative pressure storage tank 70 or the ejector 30.
  • the water level in the toilet bowl 2 is reduced to the height near the lowest level 2a of the rear of the toilet bowl 2 at time t3 in FIG. 3 .
  • the third on-off valve V3 is opened and the fourth on-off valve V4 is closed by the control device C.
  • An amount of flush water supplied into the rim 3 is increased before air flows from the toilet bowl 2 into the toilet drainage channel 5 and the siphon action is terminated, that is, before the water level in the toilet bowl 2 become lower than the lowest water level portion 2a in the rear of the toilet bowl 2.
  • the flush water supplied from the rim 3 is an addition of the flush water supplied from the water conduit 10 and the flush water stored in the tank 20. Accordingly, since an amount of flush water supplied to the toilet bowl 2 per predetermined time is increased, the water sealing part 4 is not broken, the flush water in the toilet bowl 2 is swirled, and the siphon action is continued. Furthermore, the swirl flow in the toilet bowl 2 is intensified, and the flow of flush water is increased. Consequently, sewage remaining in the toilet bowl 2 is discharged so as to be forced out into the toilet drainage channel 5, and lightweight sewage floating in the flush water can be discharged into the toilet drainage channel 5.
  • the flush water supplied into the toilet bowl 2 by the flush water increasing step is still swirled at time t4 in FIG. 3 , and the water sealing part 4 is not broken. In other words, the discharge flow due to the siphon action is continuous.
  • the first on-off valve V1 is closed and the fourth on-off valve V4 is opened by the control device C.
  • the atmospheric pressure is introduced into the first chamber 81 such that the diaphragm 83 is lowered, since the first chamber 81 of the suction tank 80 communicates with the outside through the fourth on-off valve V4, the third connecting pipe 130, the first connecting pipe 110, the second connecting pipe 120 and the third on-off valve V3.
  • the toilet drainage channel 5 cannot be retained in a state completely filled with the flush water, whereby the siphon action is terminated. That the toilet drainage channel 5 cannot be retained in the state completely filled with the flush water includes the case where the upstream side and the downstream side of the toilet drainage channel 5 are kept balanced in pressure even in the state where air remains in the toilet drainage channel 5 such that the state where the discharge flow is being caused cannot be maintained. In this case, no noise due to the braking of the water sealing part 4 is produced.
  • the first and second on-off valves V1 and V2 are opened and the fourth on-off valve V4 is closed by the control device C at time t5 in FIG. 3 .
  • the flush water flows into the swirl chamber 29 while the ejector 30 is sucking air from the outside. Air contained in the flush water is successfully separated in the swirl chamber 29 to be discharged through the atmospheric port 23 and the second on-off valve V2 to the outside. Accordingly, the flush water is stored in the tank 20 until the predetermined water level before start of the flushing is reached.
  • the first on-off valve V1 is closed and the fourth on-off valve V4 is opened by the control device C at time t6 in FIG. 3 .
  • the first chamber 81 of the suction tank 80 communicates with the outside via the fourth on-off valve V4, the third connecting pipe 130, the first connecting pipe 110, the second connecting pipe 120 and the third on-off valve V3, whereupon the diaphragm 83 is lowered until the diaphragm 83 abuts against the lower inner wall surface of the suction tank 80. Consequently, since the diaphragm 83 is returned to the predetermined position before flushing, the subsequent flushing can stably be executed. Thereafter, the second, third and fourth on-off valves V2, V3 and V4 are closed by the control device C at time t7 in FIG. 3 .
  • the air suction device 200 for the toilet drainage channel 5 in accordance with embodiment 1 carries out toilet flushing successfully and silently.
  • the western flushing toilet of embodiment 2 has the same construction as embodiment 1 and differs from the western flushing toilet of embodiment 1 only in the operation of the toilet flushing device S.
  • the first on-off valve V1 is closed and the fourth on-off valve V4 is opened by the control device C at time t4 a predetermined time after time t3' at which the flush water increasing step has been terminated.
  • the first chamber 81 of the suction tank 80 communicates with the outside through the fourth on-off valve V4, the third connecting pipe 130, the first connecting pipe 110, the second connecting pipe 120 and the third on-off valve V3, whereupon the atmospheric pressure is introduced into the first chamber 81 such that the diaphragm 83 is lowered.
  • the flush water supplied into the toilet bowl 2 by the flush water increasing step is also discharged into the toilet drainage channel 5 by the siphon action, whereupon an amount of flush water in the toilet bowl 2 is reduced. Accordingly, when air is rushed from the second chamber 82 into the toilet drainage channel 5, the discharge flow established by the siphon action is intermitted, whereby the siphon action can be terminated immediately and reliably. Furthermore, since the water sealing 4 is not broken in this case, too, no noise due to the breaking of the water sealing part 4 is produced. Since the other operation of embodiment 2 is the same as that in embodiment 1, detailed description of the other operation will be eliminated.
  • the air suction device 200 for the toilet drainage channel in accordance with embodiment 2 can achieve the same effect of the invention in the same manner as in embodiment 1.
  • the present invention is utilizable as water flushing toilet.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Epidemiology (AREA)
  • Sanitary Device For Flush Toilet (AREA)
EP08738793A 2007-04-04 2008-03-25 Luftabsaugvorrichtung für toilettenablaufkanal Withdrawn EP2143848A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007098911A JP4994089B2 (ja) 2007-04-04 2007-04-04 便器排水路の吸気装置
PCT/JP2008/055493 WO2008123216A1 (ja) 2007-04-04 2008-03-25 便器排水路の吸気装置

Publications (2)

Publication Number Publication Date
EP2143848A1 true EP2143848A1 (de) 2010-01-13
EP2143848A4 EP2143848A4 (de) 2011-03-09

Family

ID=39830711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08738793A Withdrawn EP2143848A4 (de) 2007-04-04 2008-03-25 Luftabsaugvorrichtung für toilettenablaufkanal

Country Status (9)

Country Link
US (1) US20100088813A1 (de)
EP (1) EP2143848A4 (de)
JP (1) JP4994089B2 (de)
KR (1) KR20090126247A (de)
CN (1) CN101641484A (de)
CA (1) CA2682314A1 (de)
RU (1) RU2458210C2 (de)
TW (1) TWI421395B (de)
WO (1) WO2008123216A1 (de)

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US8595868B2 (en) * 2007-09-21 2013-12-03 Lixil Corporation Air suction device for toilet drain passage
CN201512849U (zh) * 2009-09-24 2010-06-23 山东华腾环保科技有限公司 真空辅助便器
CN101851954A (zh) * 2010-05-21 2010-10-06 陈旭江 具有复式排污弯道的坐便器
US20130291297A1 (en) * 2011-02-10 2013-11-07 Lixil Corporation Toilet flushing device and flush toilet
KR101446577B1 (ko) * 2013-02-07 2014-10-07 노지녕 공기 처리 장치
CN103276781B (zh) * 2013-05-27 2015-01-14 蔡金明 便器除臭风道内静音防臭气倒流机构
CN103711193A (zh) * 2013-12-26 2014-04-09 科勒(中国)投资有限公司 抽真空的虹吸式马桶及其冲水方法
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CN107083798B (zh) * 2017-06-20 2022-12-23 重庆大学 一种马桶

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US20100088813A1 (en) 2010-04-15
WO2008123216A1 (ja) 2008-10-16
EP2143848A4 (de) 2011-03-09
JP2008255663A (ja) 2008-10-23
CN101641484A (zh) 2010-02-03
JP4994089B2 (ja) 2012-08-08
TW200914691A (en) 2009-04-01
RU2009140755A (ru) 2011-05-10
RU2458210C2 (ru) 2012-08-10
TWI421395B (zh) 2014-01-01
CA2682314A1 (en) 2008-10-16
KR20090126247A (ko) 2009-12-08

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