JP4994089B2 - Toilet drainage intake system - Google Patents

Description

  The present invention relates to a suction device for a toilet drainage channel.

  Patent Document 1 discloses a conventional toilet apparatus for a toilet drainage channel. This air intake apparatus includes an air intake means for sucking air from a toilet drainage channel connected to the downstream side of the water seal portion of the toilet body. A bypass pipe is connected to a water supply pipe for supplying cleaning water to the toilet bowl of the toilet body. The bypass pipe is provided with an ejector that generates a negative pressure. The intake means has this ejector and a suction tank connected between the ejector and the toilet drainage channel. The inside of the suction tank is partitioned into an outer side of the bellows (first chamber) and an inner side of the bellows (second chamber). The first chamber is connected to the ejector, and the second chamber is connected to the toilet drainage channel. A flush valve is connected to the water supply pipe upstream of the bypass pipe.

  In this intake device, when the flush valve is operated, the washing water is passed through the water supply pipe for a certain period of time, and the washing water is supplied to the toilet bowl. At this time, since wash water also flows into the ejector via the bypass pipe, the ejector sucks air in the first chamber of the suction tank. As a result, the bellows in the suction tank extends. In the process of extending the bellows, air is sucked from the toilet drainage channel into the second chamber. In this way, the intake stroke is executed and a siphon action is generated.

  In addition, when a certain time has elapsed, the wash water is not passed through the water supply pipe, and the supply of the wash water to the toilet bowl is finished. As a result, the water supply pipe, the bypass pipe and the first chamber on the downstream side of the flush valve are opened to the atmosphere, and the bellows in the suction tank contracts. The air in the second chamber is discharged to the toilet drainage channel in the process of the bellows contracting. Thus, the exhaust stroke is executed.

  In a conventional toilet drainage intake device having such a configuration, a control device for controlling the intake means is specially required in order to suck air from the toilet drainage channel in conjunction with the supply of wash water to the toilet bowl. do not do. For this reason, the configuration of the intake device is simple.

JP-A-7-54388

  However, in the above conventional toilet drainage intake device, since the intake stroke is performed simultaneously with the supply of the wash water to the toilet bowl, the siphon action is generated in a situation where the amount of the wash water supplied to the toilet bowl is small. End up. For this reason, the wash water is supplied to the toilet bowl, the water level in the toilet bowl is sufficiently increased, and the siphon action is weaker than the siphon action generated using the potential energy. In this case, there is a risk that the discharge of filth from the toilet bowl to the toilet drainage channel will be insufficient.

  Further, the siphon action generated by the execution of the intake stroke is terminated when the water seal portion is broken by discharging most of the wash water in the toilet bowl to the toilet drainage channel. For this reason, a broken sound is generated.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the suction device of the toilet drainage channel which can perform toilet bowl washing | cleaning favorably and quietly.

The intake device of the toilet drainage channel of the present invention is an intake device of a toilet drainage channel provided with an intake means for sucking air from a toilet drainage channel connected to the downstream side of the water seal portion of the toilet body,
The intake means has a negative pressure generator, and a suction tank connected between the negative pressure generator and the toilet drainage channel,
A control device for controlling the execution of an intake stroke in which the suction tank sucks air from the toilet drainage channel and an execution of an exhaust stroke in which the suction tank discharges the air to the toilet drainage channel;
The control device performs the intake stroke after starting the supply of the wash water to the toilet bowl of the toilet bowl body, and executes the exhaust stroke before the end of the supply of the wash water to the toilet bowl.

  In the toilet drainage intake device of the present invention having such a configuration, after the start of the supply of washing water to the toilet bowl, the intake stroke is executed in a state where the water level in the toilet bowl is sufficiently high, and siphon action is generated. Let For this reason, it becomes a powerful siphon action using the potential energy of the rising level of the wash water in the toilet bowl, and the filth can be reliably discharged to the toilet drainage channel.

  In addition, since the exhaust stroke is performed before the supply of the wash water to the toilet bowl, the air increases in the toilet drainage channel, and the toilet drainage channel cannot be maintained in a full state with the wash water. The siphon action ends. In this case, since the water seal portion does not break, no sound is generated.

  Accordingly, the toilet drainage intake device of the present invention can perform toilet flushing satisfactorily and quietly.

  In the intake device of the present invention, it is preferable that the control device performs the exhaust stroke while the flush water is supplied to the toilet bowl and the discharge flow due to the siphon action continues in the toilet drainage channel. In this case, the siphon action can be reliably terminated by executing the exhaust stroke.

  In the intake device of the present invention, the control device executes the exhaust stroke after temporarily stopping the supply of the wash water to the toilet bowl and before restarting the supply of the wash water for forming the water seal portion in the toilet bowl It is preferable to do. In this case, it is possible to reliably end the siphon action and form a water seal portion having a predetermined water level.

In the intake device of the present invention, the inside of the suction tank is partitioned into a first chamber and a second chamber by a diaphragm movable in the vertical direction at the time of installation,
The first chamber is preferably connected to a negative pressure generator, and the second chamber is preferably connected to a toilet drainage channel.

  In this case, since a certain amount of air can be sucked from the toilet drainage channel according to the internal volume of the suction tank, the siphon action can be stably generated. Moreover, since the inside of the suction tank is divided into a first chamber and a second chamber by a diaphragm, and only the second chamber is connected to the toilet drainage channel, cleaning water containing filth, air containing odor, etc. It is surely prevented from entering the negative pressure generator.

  As the negative pressure generator, various devices can be adopted as long as they can generate a negative pressure. For example, a mechanical pump or the like can be employed in addition to an ejector that generates negative pressure by supplying cleaning water.

  Hereinafter, Embodiments 1 and 2 in which a toilet flushing apparatus according to the present invention is embodied as a Western style flush toilet will be described with reference to the drawings.

  As shown in FIG. 1, the Western-style flush toilet of Example 1 includes a toilet body 1 and a toilet cleaning device S. Illustration of the toilet seat and toilet lid is omitted.

  The toilet body 1 has a rim 3 on the upper inner periphery of the toilet bowl 2. The toilet body 1 is formed with an ascending flow path 2 b extending upward from the lower end of the toilet bowl 2, and a water seal 4 is formed below the toilet bowl 2. The ascending flow path 2b of the toilet body 1 is connected to a connection pipe, and the inside of the connection pipe is a toilet drainage channel 5, a retention portion 6, and a drain port 7.

  The toilet flushing device S includes a flush water supply device 100 and an intake device 200 for the toilet drainage channel 5.

  The cleaning water supply apparatus 100 includes a water conduit 10 connected to the water pipe and a first on-off valve V1 that opens and closes the water conduit 10.

  The water conduit 10 communicates with a water tap V5 of a water pipe drawn from the floor or wall surface of the toilet room where the toilet body 1 is installed. Further, a strainer device 11 incorporating a water stop valve and a strainer and a constant flow valve 12 are provided on the upstream side of the first on-off valve V1, and a vacuum cube breaker 13 is provided on the downstream side.

  In addition, an inlet 31 of an ejector 30 that is a negative pressure generator is connected to the water conduit 10 downstream of the vacuum breaker 13. An inlet 21 of the tank 20 is connected to the outlet 32 of the ejector 30, and the tank 20 can discharge the stored washing water from the outlet 22.

  The tank 20 includes an inflow chamber 25 that communicates with the inflow port 21, and an outflow chamber 26 that communicates with the inflow chamber 25 at the bottom and communicates with the outflow port 22. An air inlet 23 is provided in the inflow chamber 25, and a second on-off valve V <b> 2 is connected thereto. The inflow chamber 25 has a swirl chamber 29 in which washing water is discharged from a nozzle 50 communicating with the outlet 32 of the ejector 30 to form a swirling flow. A delivery pipe 40 extending to the rim 3 of the toilet body 1 is connected to the outlet 22.

  The ejector 30 has an intake port 33 communicating with the outside. The intake port 33 sucks air by deriving cleaning water from the deriving port 32.

  The intake device 200 of the toilet drainage channel 5 includes the following negative pressure accumulating tank 70, suction tank 80, and the like.

  The intake port 33 of the ejector 30 is connected to a negative pressure accumulating tank 70 that accumulates a negative pressure via a first pressure guiding pipe 110 provided with a check valve 111. For this reason, the ejector 30 constituting the water supply means of the cleaning water supply apparatus 100 is also used for the intake device 200.

  A third on-off valve V3 is provided midway from the check valve 111 to the first pressure guiding pipe 110 from the negative pressure accumulating tank 70, and a second pressure guiding pipe 120 communicating with the outside is branched. Further, a fourth on-off valve V4 is provided in the middle, and a third pressure guiding tube 130 communicating with a suction tank 80 for sucking air from the toilet drainage channel 5 is branched.

  The inside of the suction tank 80 is partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83 that can move in the vertical direction at the time of installation. The first chamber 81 is connected to the third pressure guiding tube 130, and the second chamber 82 is connected to the toilet drainage channel 5 by the suction tube 90.

  As shown in FIG. 2, the opening / closing timing and the opening / closing time of the first opening / closing valve V 1, the second opening / closing valve V 2, the third opening / closing valve V 3, and the fourth opening / closing valve V 4 are controlled by the control device C. Since the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4 are air on-off valves, they do not require much pressure and can be made smaller than the water on-off valves, and can be opened and closed. It can be done with little force.

  In the above Western-style flush toilet, the air intake device 200 of the toilet drainage channel 5 includes the ejector 30, the first pressure guiding pipe 110, the check valve 111, the negative pressure accumulating tank 70, the second pressure guiding pipe 120, the third on-off valve V3, The third pressure guiding pipe 130, the fourth on-off valve V4, the suction tank 80, the suction pipe 90, and the control device C are configured. The washing water supply device includes a water conduit 10, a strainer 11, a constant flow valve 12, a first on-off valve V1, a vacuum breaker 13, an ejector 30, a nozzle 50, a tank 20, a second on-off valve V2, a delivery pipe 40, a first. The pressure guiding pipe 110, the second pressure guiding pipe 120, the third on-off valve V3, and the control device C are included.

  Next, the operation of the toilet bowl cleaning device S incorporating the intake device 200 of the first embodiment will be described based on the configuration shown in FIG.

[When not washed]
In FIG. 3, the first on-off valve V1, the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4 are closed during non-cleaning before the time point t1. In this state, cleaning water is stored in the tank 20. The diaphragm 83 in the suction tank 80 is in contact with the lower inner wall surface in the suction tank 80.

[Toilet bowl washing process, negative pressure accumulation process]
After the stool, the first on-off valve V1 is opened by the control device C when the user operates a cleaning switch that transmits a toilet cleaning start signal to the control device C at time t1 in FIG.

  As a result, the wash water flowing in the water conduit 10 flows into the swirl chamber 29 through the ejector 30. As the washing water flows into the ejector 30, the ejector 30 sucks the air in the negative pressure accumulating tank 70 through the first pressure guiding pipe 110 and the check valve 111, and the sucked air together with the washing water turns into the swirl chamber 29. Flows in. Since the wash water swirls in the swirl chamber 29, the air in the wash water is well separated and accumulated in the upper part of the inflow chamber 25. As a result, the negative pressure is gradually accumulated in the negative pressure accumulator tank 70, and the water surface of the inflow chamber 25 is gradually lowered by the amount of air sucked from the negative pressure accumulator tank 70.

  Further, the cleaning water supplied from the water conduit 10 and the amount of cleaning water stored in the tank 20 and corresponding to the air sucked from the negative pressure accumulating tank 70 are supplied to the rim 3 via the delivery pipe 40. . The wash water supplied to the rim 3 flows down while turning along the inner surface of the toilet bowl 2, and a swirling flow is formed in the toilet bowl 2. By this swirling flow, the filth is collected in the center of the toilet bowl 2. The swirling flow causes the paper to loosen and become familiar with the washing water and be dispersed in the washing water.

[Intake stroke]
At time t2 in FIG. 3, the control device C opens the fourth on-off valve V4. As a result, the negative pressure in the negative pressure accumulating tank 70 is transmitted to the first chamber 81 of the suction tank 80 via the first pressure guiding pipe 110, the third pressure guiding pipe 130, and the fourth on-off valve V4. Becomes negative pressure. Further, since the cleaning water is continuously supplied into the ejector 30, the air in the first chamber 81 is also sucked by the ejector 30. Thereby, the diaphragm 83 in the suction tank 80 is rapidly pulled up by the negative pressure in the negative pressure accumulator tank 70 when the fourth on-off valve V4 is opened, and thereafter the suction by the negative pressure accumulator tank 70 is sucked. In order to finish, the ejector 30 is gently lifted until it comes into contact with the upper inner wall surface of the suction tank 80.

  When the air in the toilet drainage channel 5 is sucked into the second chamber 82 by the suction tank 80, the water level in the toilet bowl 2 is sufficiently high by the supplied wash water in the toilet bowl 2 in the toilet bowl washing process. Thus, the water head difference from the highest portion 4a of the water seal portion 4 is sufficiently large. For this reason, the wash water in the toilet bowl 2 is quickly filled with the wash water due to the positional energy of the wash water due to the head difference and the suction of air in the toilet drainage 5. A strong siphon action is generated, and an early discharge flow is formed with a small amount of washing water.

  At this time, the filth collected in the center of the toilet bowl 2 by the swirl flow formed in the toilet bowl 2 is surely discharged to the toilet drainage path 5 along with the washing water drained to the toilet drainage path 5 by siphon action. Is done.

  Further, the toilet drainage channel 5 is sealed from the downstream side by the staying portion 6, and the toilet drainage channel 5 is a closed space existing between the water sealing portion 4 and the staying portion 6. For this reason, since a certain amount of air can be reliably sucked from the toilet drainage channel 5, the siphon action can be stably generated.

  Further, the suction tank 80 is partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83, and only the second chamber 82 communicates with the toilet drainage channel 5. The contained air or the like is reliably prevented from entering the negative pressure accumulating tank 70 or the ejector 30 side.

[Washing water increase process]
At the time point t3 in FIG. 1, the water level of the toilet bowl 2 has dropped to the vicinity of the height of the lowest part 2a at the rear part of the toilet bowl 2, and at this moment, the control device C opens the third on-off valve V3, The fourth on-off valve V4 is closed.

  At this time, since the cleaning water is still supplied into the ejector 30, a large amount of external air flows into the swirl chamber 29 through the third on-off valve V 3, the second pressure guiding pipe 120, and the first pressure guiding pipe 110. . For this reason, the washing water in the inflow chamber 25 is pushed out to the rim 3 through the outflow chamber 26 and the delivery pipe 40 by a large amount of air that has flowed in. As a result, the water level in the inflow chamber 25 is drastically lowered.

  Since the water level in the toilet bowl 2 becomes lower than the lowest part 2a at the rear part of the toilet bowl 2, before the siphon action is finished by the air flowing into the toilet drainage channel 5 from the toilet bowl 2, the rim 3 is supplied to the rim 3. Increased washing water. That is, the wash water supplied from the rim 3 is the sum of the wash water supplied from the water conduit 10 and the wash water stored in the tank 20, so that the toilet bowl 2 is washed per unit time. The amount of water supplied is increasing. For this reason, the water sealing part 4 does not break, the washing water in the toilet bowl 2 continues to turn, and the siphon action also continues. Further, the swirl flow in the toilet bowl 2 is also strong. In addition, the wash water flow increases. For this reason, the filth remaining in the toilet bowl 2 is discharged by being pushed into the toilet drainage channel 5, and light filth floating in the wash water in the toilet bowl 2 can be discharged to the toilet bowl drainage channel 5. it can. .

[Exhaust stroke]
At time t4 in FIG. 3, the washing water supplied into the toilet bowl 2 by the washing water increasing process is still swirling in the toilet bowl 2, and the water seal 4 is not broken. That is, the discharge flow due to the siphon action continues. At the time t4, the control device C closes the first on-off valve V1, and opens the fourth on-off valve V4. Thereby, the first chamber 81 of the suction tank 80 communicates with the outside via the fourth on-off valve V4, the third pressure guiding pipe 130, the first pressure guiding pipe 110, the second pressure guiding pipe 120, and the third on-off valve V3. The inside of the first chamber 81 becomes atmospheric pressure, and the diaphragm 83 descends. For this reason, air is discharged from the second chamber 82 into the toilet drainage channel 5, and the air in the toilet drainage channel 5 increases. For this reason, it becomes impossible to maintain the inside of the toilet drainage channel 5 in the full water state with the washing water, and the siphon action ends. In this case, since the water sealing part 4 does not sever, no sound is generated.

[Water-covering process]
At time t5 in FIG. 3, the control device C opens the first on-off valve V1 and the second on-off valve V2, and closes the fourth on-off valve V4. Accordingly, the cleaning water flows into the swirl chamber 29 while the ejector 30 sucks air from the outside. The air in the wash water is well separated in the swirl chamber 29 and is released to the outside through the atmosphere port 23 and the second on-off valve V2. For this reason, the wash water in the tank 20 is accumulated up to a predetermined water level before the start of washing. Further, the siphon action is completely finished, and the washing water is supplied to the rim 3 from the outflow chamber 26 through the delivery pipe 40, and a water seal portion having a predetermined water level is formed in the toilet bowl 2 to cover the water. .

[Air release process]
At time t6 in FIG. 3, the first on-off valve V1 is closed by the control device C, and the fourth on-off valve V4 is opened. Thereby, the first chamber 81 of the suction tank 80 communicates with the outside again through the fourth on-off valve V4, the third pressure guiding pipe 130, the first pressure guiding pipe 110, the second pressure guiding pipe 120, and the third on-off valve V3. The diaphragm 83 is lowered until it contacts the lower inner wall surface of the suction tank 80. As a result, the diaphragm 83 is returned to the predetermined position before the cleaning, and the next cleaning can be performed stably. Thereafter, at time t7 in FIG. 13, the control device C closes the second on-off valve V2, the third on-off valve V3, and the fourth on-off valve V4.

  Therefore, the air intake device 200 of the toilet drainage channel 5 according to the first embodiment can perform toilet cleaning well and quietly.

  The Western-style flush toilet of Example 2 has the same configuration as that of Example 1. As shown in FIG. 4, the operation of the toilet flushing device S is different from the Western-style flush toilet of Example 1. .

  Differences in the operation of the toilet bowl cleaning device S will be described.

  As shown in FIG. 4, at time t4 after the elapse of a predetermined time from time t3 ′ when the washing water increasing process ends, the controller C closes the first on-off valve V1 and opens the fourth on-off valve V4. . Thereby, the first chamber 81 of the suction tank 80 communicates with the outside via the fourth on-off valve V4, the third pressure guiding pipe 130, the first pressure guiding pipe 110, the second pressure guiding pipe 120, and the third on-off valve V3. The inside of the first chamber 81 becomes atmospheric pressure, and the diaphragm 83 descends. At the time t4 when a predetermined time has elapsed after the washing water increasing process is finished, the washing water supplied into the toilet bowl 2 by the washing water increasing process is also discharged into the toilet drainage channel 5 by siphon action, and the toilet bowl 2 is washed. The amount of water is decreasing. For this reason, as soon as air is pushed into the toilet drainage channel 5 from the second chamber 82, the toilet drainage channel 5 cannot be immediately filled with flush water, and the siphon action is immediately and reliably terminated. Can be made. Also in this case, since the water sealing part 4 is not broken, no breaking sound is generated. Since other operations are the same as those in the first embodiment, detailed description thereof is omitted.

  Therefore, the air intake device 200 of the toilet drainage channel 5 according to the second embodiment can also achieve the effects of the present invention as in the first embodiment.

  In the above, the present invention has been described with reference to the first and second embodiments. However, the present invention is not limited to the first and second embodiments, and can be appropriately modified and applied without departing from the spirit of the present invention. Needless to say.

  The present invention can be used for flush toilets.

It is a schematic diagram of the Western-style flush toilet bowl provided with the suction device of the toilet drainage channel of Examples 1 and 2. It is a schematic diagram which shows the control apparatus of the toilet bowl washing | cleaning apparatus of Example 1,2. It is a timing chart explaining the action | operation of the western style flush toilet of Example 1. FIG. It is a timing chart explaining the action | operation of the western style flush toilet bowl of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Toilet bowl 4 ... Water seal part 5 ... Toilet drainage 30 ... Ejector (negative pressure generator)
80 ... Suction tank 200 ... Intake device C ... Control device

Claims (4)

In the intake device of the toilet drainage channel provided with suction means for sucking air from the toilet drainage channel connected to the downstream side of the water seal portion of the toilet body,
The intake means has a negative pressure generator, and a suction tank connected between the negative pressure generator and the toilet drainage channel,
A control device for controlling the execution of an intake stroke in which the suction tank sucks air from the toilet drainage channel and an execution of an exhaust stroke in which the suction tank discharges the air to the toilet drainage channel;
The control device performs the intake stroke after starting the supply of the wash water to the toilet bowl of the toilet body, and executes the exhaust stroke before the end of the supply of the wash water to the toilet bowl Drainage intake system.   2. The toilet drainage intake device according to claim 1, wherein the control device executes the exhaust stroke while cleaning water is supplied to the toilet bowl and a discharge flow due to a siphon action is continued in the toilet drainage channel.   The control device executes the exhaust stroke after temporarily stopping the supply of the wash water to the toilet bowl and before restarting the supply of the wash water for forming the water seal portion in the toilet bowl The inhaler of the toilet drainage channel according to claim 1. The inside of the suction tank is partitioned into a first chamber and a second chamber by a diaphragm movable in the vertical direction at the time of installation,
4. The toilet drainage intake device according to any one of claims 1 to 3, wherein the first chamber is connected to the negative pressure generator, and the second chamber is connected to the toilet drainage channel.

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