WO2007097259A1

WO2007097259A1 - Toilet bowl flushing device

Info

Publication number: WO2007097259A1
Application number: PCT/JP2007/052843
Authority: WO
Inventors: Yasuhiro Shirai; Aki Shirako; Haruo Yamasaki; Kenichi Ito; Yasuhiro Kondo; Ken Hirabayashi; Atsushi Itoh
Original assignee: Inax Corporation
Priority date: 2006-02-20
Filing date: 2007-02-16
Publication date: 2007-08-30
Also published as: EP1990473A4; HK1128740A1; US20090151063A1; KR20080106174A; EP1990473A1; TW200738940A

Abstract

A toilet bowl flushing device capable of reliably discharging excreta with less flush water in a short time and emitting low flushing noise. The toilet bowl flushing device has first water supply means for supplying flush water to a bowl (2) of a toilet bowl body (1), second water supply means for additionally supplying the flush water, a drain flow passage (5) connected to the downstream side of the water sealing part (4) of the toilet bowl body (1), air suction means for sucking air from the drain flow passage (5), and a control device (50) for controlling the first and second water supply means and the air suction means. The first water supply means is formed so that it can supply the flush water from the rear of the bowl (2) so as to form a swirl flow in the bowl (2). The second water supply means has a cistern (20) and discharge means for discharging the flush water in the cistern (20) to the bowl (2) when an open/close valve (V2) is opened. After activating the first water supply means, the control device (50) activates the air suction means, creating a siphon effect to form the swirl flow, and then opens the open/close valve (V2) after the swirl flow is formed and before the siphon effect is completed.

Description

Specification

Toilet bowl cleaning device

Technical field

The present invention relates to a toilet bowl cleaning device.

Background art

[0002] Conventionally, a water supply means for supplying flush water to a toilet bowl of a toilet bowl body, a drainage channel connected to the downstream side of the water seal portion of the toilet bowl body, an intake means for sucking air from the drainage channel, and a toilet To clean the main body, there has been proposed a toilet cleaning device provided with control means for controlling water supply means and intake means (Patent Documents 1 and 2).

[0003] The toilet bowl cleaning device described in Patent Documents 1 and 2 can quickly fill a drainage channel with flushing water by sucking air in the drainage channel. An action can be generated.

[0004] In addition, in the toilet cleaning device of the example described in Patent Document 1, the water supply means has a water supply pipe for discharging the cleaning water to the rim of the toilet body. Further, the intake means has an ejector (referred to as “aspirator” in Patent Document 1) provided in the middle of the water supply pipe. The air sucked from the drainage channel by the ejector is discharged to the rim of the toilet body together with the wash water discharged from the ejector.

[0005] On the other hand, in comparison with the toilet cleaning device of another example described in Patent Document 2, the water supply means has a water supply pipe for discharging cleaning water to the rim of the toilet body. The intake means includes a branch pipe that branches the water supply pipe and discharges wash water to the descending pipe of the drainage flow path, and an ejector provided in the middle of the branch pipe. The air sucked from the drainage channel by the ejector is discharged to the descending pipe of the drainage channel together with the cleaning water discharged from the ejector.

[0006] In addition, a first water supply means for supplying cleaning water to a discharge port provided in the lower part of the toilet bowl of the toilet body, and a water tank provided adjacent to the water seal portion, the cleaning water stored in the water tank is siphoned There has been proposed a toilet flushing device provided with a second water supply means for discharging from the discharge locuser before the action ends (Patent Document 3).

[0007] The toilet bowl cleaning device described in Patent Document 3 is a cleaning device that is discharged from the discharge port by the second water supply means. Since the water remaining in the toilet bowl is pushed into the drainage channel due to the clean water, the waste can be discharged reliably.

Patent Document 1: Japanese Patent Laid-Open No. 10-96255

Patent Document 2: JP 2002-61262 A

Patent Document 3: Japanese Patent Laid-Open No. 11-264173

Disclosure of the invention

Problems to be solved by the invention

However, the toilet bowl cleaning device described in Patent Documents 1 and 2 has a small amount of washing water supplied to the toilet bowl, so that the siphon action ends early and the waste cannot be completely discharged. There is. In particular, filth floating near the surface of the toilet bowl should remain so as to stick to the surface of the toilet bowl when the wash water is drained into the drainage channel and the cleaning water in the toilet bowl decreases. There is. In addition, because of the powerful siphon action, most of the wash water in the toilet bowl is drained all at once into the drainage channel, so there is a high level of sound generated by the air flowing into the drainage channel from the toilet bowl side.

[0010] In addition, the toilet bowl cleaning device described in Patent Document 3 needs to supply a large amount of washing water to the toilet bowl in order to generate a siphon action, and thus it takes time to generate the siphon action.

[0011] The present invention has been made in view of the above-described conventional situation, and provides a toilet bowl cleaning device that discharges filth in a short time and reliably with a small amount of cleaning water, and further has a quiet cleaning sound. This is a problem to be solved.

Means for solving the problem

[0012] The toilet bowl cleaning device of the present invention includes a first water supply means for supplying cleaning water to a toilet bowl of a toilet bowl body, and the cleaning water is added to the toilet bowl in addition to the cleaning water supplied from the first water supply means A second water supply means for supplying; a drainage flow channel connected downstream of the water seal portion of the toilet body; an intake means for sucking air from the drainage channel; and the first water supply means for cleaning the toilet body. A toilet bowl cleaning device comprising: a second water supply means; and a control means for controlling the air intake means, wherein the first water supply means is configured to form a swirling flow in the toilet bowl. The back side of From which washing water can be supplied,

The second water supply means has a water tank for storing wash water, and a sending means for sending the wash water in the water tank to the toilet bowl by opening an on-off valve.

The control means activates the intake means after the operation of the first water supply means to cause a siphon action, and opens the on-off valve after the swirl flow is formed and before the siphon action ends. It is characterized by that.

[0013] With the toilet cleaning device of the present invention having such a configuration, the drainage channel can also suck air at an optimal timing by the intake means controlled by the control means. In addition, by controlling the opening / closing valve by the control means, the wash water stored in the water tank can be additionally supplied to the toilet bowl at an optimal timing. For this reason, the siphon action can be formed quickly and reliably.

[0014] In addition, since a swirl flow is formed in the toilet bowl, the waste is collected in the center of the toilet bowl, so that the waste also flows along with the washing water drained into the drainage channel by siphon action. It is surely discharged to the road.

[0015] In addition, since the flush water stored in the water tank is additionally supplied to the toilet bowl before the siphon action ends, the water seal does not break and the duration of the siphon action becomes longer, and the discharge of filth Ability increases. Moreover, the waste water remaining in the toilet bowl is discharged by the flow of additional wash water supplied to the toilet bowl so that it is pushed out into the drainage channel. In addition, since it takes time to drain the wash water additionally supplied to the toilet bowl into the drainage channel, the flushing water in the toilet bowl is not drained into the drainage channel all at once, resulting in a large smashing sound. Occurrence can be prevented.

[0016] Therefore, the toilet bowl cleaning device of the present invention can reliably discharge filth in a short time with a small amount of cleaning water, and can further quiet the cleaning sound.

[0017] In the toilet bowl cleaning device of the present invention, the lower force washing water of the water tank may be taken out and sent to the toilet bowl. In this case, the bubbles mixed in the washing water in the water tank are separated, and when the additional supply to the toilet bowl is made, almost no bubbles are contained in the washing water. For this reason, it is possible to prevent the generation of noise such as a plosive sound generated by the bursting of bubbles when supplied to the toilet bowl.

[0018] In the toilet bowl cleaning device of the present invention, the delivery means is separated from the water supply pipe of the first water supply means. It is possible to use a jet pump that is installed on a branched branch pipe and placed in a water tank. The jet pump has the same structure as the ejector, and sucks and conveys the washing water stored in the water tank by the washing water flowing through the jet pump. In this case, since the wash water in the water tank and the wash water flowing in the jet pump are combined and supplied to the toilet bowl, the amount of water supplied per unit time increases. For this reason, the swirl flow in the toilet bowl becomes strong and the siphon action is continued for a long time, so that filth can be discharged more reliably.

[0019] In the toilet bowl cleaning device of the present invention, the intake means includes a negative pressure generating device, and a suction tank partitioned into a first chamber and a second chamber by a movable wall that can be moved forward and backward, and the first chamber Is communicated with the negative pressure generator by the intake pipe and communicated with the atmosphere via the atmosphere release valve, the second chamber is communicated with the drainage flow path and the communication path, and the control device includes the negative pressure generator and It is preferable to control the air release valve!

[0020] In this case, when the negative pressure is generated in the first chamber by the negative pressure generator, the movable wall moves to the first chamber side, and the volume of the second chamber increases by a certain amount. If the internal volume of the suction tank is selected appropriately, a certain amount of air is sucked from the drainage flow path, so that cleaning water containing dirt in the drainage flow path is not sucked into the second chamber and the siphon action is stabilized. Can be generated.

[0021] In addition, the first chamber and the second chamber are partitioned by the movable wall, and only the second chamber is communicated with the drainage channel, so that it contains cleaning water and odors including dirt in the drainage channel. Air or the like can be prevented from entering the negative pressure generating device.

[0022] In addition, after sucking air from the drainage flow path to the second chamber, the atmosphere release valve is opened to connect the first chamber to the atmosphere, and the first chamber is returned to atmospheric pressure, thereby moving the movable wall. Is surely returned to the original position, and the next cleaning can be performed stably.

[0023] In the toilet bowl cleaning device of the present invention, the negative pressure generator stores an ejector that generates a negative pressure when the cleaning water is passed, and a negative pressure that is generated when the ejector sucks the internal air. It is preferable to have a negative pressure tank communicated with the first chamber by an intake pipe.

[0024] In this case, since the negative pressure accumulated in the negative pressure tank is used, the movable wall moves to the first chamber side in a short time, and the air in the drainage channel is sucked into the second chamber in a short time. Can do. For this reason, toilet bowl wash water flows in vigorously, and the drainage channel is quickly filled with wash water at an early stage. As a result, siphon action occurs, and an exhaust flow is formed at an early stage.

[0025] Further, by selecting the internal volume of the negative pressure tank and the pipe diameter of the intake pipe, the speed of sucking air from the drainage flow path to the second chamber can be optimized. For example, when the internal volume of the negative pressure tank is reduced, the negative pressure in the negative pressure tank suddenly decreases and the movement of the movable wall to the first chamber side becomes slow, so the suction speed becomes slow. On the other hand, when the internal volume of the negative pressure tank is increased, the negative pressure in the negative pressure tank is not so weak, and the movement of the movable wall to the first chamber side becomes faster, so the suction speed becomes faster.

[0026] Further, in the toilet bowl cleaning device of the present invention, the negative pressure generating device may employ a decompression pump driven by electricity or the like. In this case, the movable wall can be moved to the first chamber side by operating a decompression pump or the like. For this reason, if the drive of the decompression pump or the like is controlled, the moving speed of the movable wall can be adjusted, and the speed of sucking air from the drainage channel into the second chamber can be easily adjusted.

[0027] In the toilet bowl cleaning device of the present invention, it is preferable to store the wash water discharged from the ejector cup in a water tank.

[0028] In this case, since the cleaning water supplied to the ejector is used as additional cleaning water, effective use of the cleaning water is achieved.

[0029] In the toilet bowl cleaning device of the present invention, the drainage flow path is provided with a retention portion where the wash water stays and eliminates the force to reduce the communication area, and the intake means includes a water seal portion and a retention portion. U, preferring to suck air from between.

[0030] In this case, the drainage channel is difficult to communicate with the downstream by the staying part or is blocked.

The intake means does not suck the downstream air in the best case where it is difficult to suck the downstream air from the staying portion. In the latter case, in other words, the intake means can more efficiently suck the air in the drainage flow path force that is in the closed space existing between the water seal portion and the retention portion. For this reason, the siphon action can be surely generated.

Brief Description of Drawings

[0031] FIG. 1 is a schematic diagram showing an operating state when the Western-style toilet equipment equipped with the toilet bowl cleaning device of the embodiment is in a non-cleaning state.

[Fig. 2] Shows the operating state of the Western-style toilet equipment in Fig. 1 during the toilet bowl washing 'negative pressure accumulation process' It is a schematic diagram.

[Fig. 3] Fig. 3 is a schematic diagram showing an operating state when the Western-style toilet equipment of Fig. 1 is in the intake stroke.

FIG. 4 is a schematic diagram showing an operating state when the Western-style toilet equipment of FIG. 1 is in the initial stage of the washing water addition process.

[Fig. 5] Fig. 5 is a schematic diagram showing an operating state when the Western-style toilet equipment of Fig. 1 is at the end of the washing water addition process.

[Fig. 6] Fig. 6 is a schematic diagram showing an operating state when the Western-style toilet equipment of Fig. 1 is in the air release and water-covering process.

FIG. 7 is a timing chart for explaining the operation of the Western-style toilet equipment provided with the toilet bowl cleaning device of FIGS.

FIG. 8 is a schematic diagram showing a control device of the toilet bowl cleaning device of the example.

FIG. 9 is a schematic diagram of Western-style toilet equipment equipped with a toilet bowl cleaning device of another embodiment.

Explanation of symbols

1… Toilet body

2 ... toilet bowl

3 ... Rim

4 ... Water seal

5 ... Drainage channel

6 ... Retention part

7… Drain outlet

10 ... Water supply pipe

20 ... Water tank

21 ... Ejecta

24 ... Jet pump

30 ... negative pressure tank

40 ··· Suction tank

41… Room 1

42 ... Room 2 43 ··· Diaphragm (movable wall)

44 ... Communication passage

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1 to FIG. 6, a rim 3 is provided on the inner periphery of the upper part of the toilet bowl 2 in the ceramic toilet body 1. The toilet bowl 2 communicates with the drainage port 7 through the water sealing part 4, the drainage channel 5 and the staying part 6. The drainage flow path 5 extends downward from the highest portion 4 a of the water seal portion 4 and continues to the retention portion 6. Drain port 7 is connected to a drain pipe.

[0035] This staying portion 6 is composed of a U-shaped flow path that wraps around the lower side of the lowest level portion 6b at the bottom of the pipe wall of the drainage flow channel 5 and then reaches the highest level portion 6a for overflow. The highest part 6a of the stay part 6 is slightly higher than the lowest part 6b.

[0036] A water supply pipe 10 serving as a first water supply means is connected to the rim 3. The water supply pipe 10 has a main valve V. This toilet body 1 is placed from the rear side of the toilet bowl 2 to the right or left side of the rim 3.

1

It is a one-way water supply system in which only wash water is supplied. For this reason, when washing water is supplied from the water supply pipe 10 toward the rim 3, a clockwise or counterclockwise swirling flow is formed in the toilet bowl 2.

[0037] Pipes 11, 12, and 13 branch from water supply pipe 10 downstream of main valve V. Piping 11

1

There is a vacuum breaker 1 la at the tip of!

[0038] The pipe 12 is introduced into the water tank 20, and its tip is connected to the inlet of the ejector 21. The base end of the pipe 23 is connected to the outlet of the ejector 21, and the tip of the pipe 23 is opened in the water tank 20. A base end of an air suction pipe 22 equipped with a check valve V is connected to an air suction port provided in the throat portion of the ejector 21. The tip of piping 22 is aquarium 2

Three

It is pulled out outside 0 and connected to the negative pressure tank 30. In the upper part of the water tank 20, a communication pipe 26 for communicating the inside of the water tank 20 to the atmosphere is provided.

[0039] The check valve V allows air to flow from the negative pressure tank 30 to the ejector 21.

Three

This prevents air from flowing in the opposite direction. This check valve V

3 is provided outside the tank 20.

[0040] The negative pressure tank 30 is connected to the proximal end of an intake pipe 31 having an operation valve V, and the tip of the intake pipe 31 is connected. The end is connected to the top of the suction tank 40. The suction tank 40 is divided into an upper first chamber 41 and a lower second chamber 42 by a diaphragm 43 as a movable wall. The intake pipe 31 is connected to the first chamber 41. The first chamber 41 of the suction tank 40 has an air release valve V

The base end of the open air pipe 32 with 5 is connected, and the tip of the open air pipe 32 is open to the atmosphere. The second chamber 42 of the suction tank 40 and the upper end of the drainage channel 5 communicate with each other via a communication path 44.

[0041] The negative pressure generator includes a pipe 12, an ejector 21, an air suction pipe 22 equipped with a check valve V, a negative

Three

It consists of an intake pipe 31 with a pressure tank 30 and an operating valve V. The intake means is

Four

, This negative pressure generator, suction tank 40, air release pipe 32 with air release valve V and

Five

Consists of communication passage 44.

[0042] The pipe 13 is provided with an on-off valve V, and the tip of the pipe 13 is introduced into the water tank 20,

2

It is connected to the inlet at the lower end of the top pump 24. This jet pump 24 has the same structure as the ejector 21, and is stored in the water tank 20 from the water suction port 24 a provided in the slot portion by the flow of the washing water flowing in the jet pump 24. Aspirate and transfer cleaning water. The water suction port 24 a is opened in the water tank 20 and is located in the lower part of the water tank 20.

[0043] The base end of a pipe 25 for additional washing water is connected to the outlet of the jet pump 24, and the tip of the pipe 25 is drawn from the water tank 20 and connected to the rim 3.

[0044] The main valve V, the on-off valve V, the operating valve V, and the air release valve V are on-off valves, as shown in Fig. 8.

1 2 4 5

In addition, this toilet flushing device has a control system that controls the opening and closing timing of the valves V, V, V, and V.

1 2 4 5

A control device 50 is provided as a control means. This control device 50 opens and closes each valve by an electric signal.

Force not shown in the figure These water tank 20, negative pressure tank 30, suction tank 40, control device 50 and the like are housed in a unit case provided at the rear of the toilet body 1.

[0046] Next, the operation of the toilet bowl cleaning device will be described.

[0047] [Non-cleaning (Figure 1)]

In Fig. 7, at the time of non-cleaning before time t, the main valve V, on-off valve V, operating valve V and

1 1 2 4 Air release valve V is closed. In this state, the diaphragm 41 in the suction tank 40 is at atmospheric pressure.

Five

The diaphragm 41 is in contact with the bottom surface of the suction tank 40 by its own weight. [0048] [Toilet bowl washing 'negative pressure accumulation process (Fig. 2)]

At time t after the flight, the user operates the control device 50 and opens the main valve V.

1 1

Then, wash water is supplied from the water supply pipe 10 to the rim 3 and flows down while turning along the inner surface of the toilet bowl 2, and a swirling flow is formed in the toilet bowl 2. This swirling flow collects dirt in the center of toilet bowl 2 and the paper loosens and blends with the wash water and disperses in the wash water.

Further, a part of the washing water flowing in the water supply pipe 10 is accumulated in the water tank 20 through the pipe 12, the ejector 21 and the pipe 23. As the wash water flows into the ejector 21, the ejector 21 sucks the air in the negative pressure tank 30 into the water tank 20 through the pipe 22 and the check valve V.

Three

. As a result, negative pressure is gradually accumulated in the negative pressure tank 30.

[0051] [Intake stroke (Fig. 3)]

The operating valve V is opened by the control device 50 at time t in FIG. This

twenty four

The negative pressure in the negative pressure tank 30 is supplied to the first chamber 41 of the suction tank 40 via the intake pipe 31 and the operating valve V 41.

Four

The pressure in the first chamber 41 becomes negative pressure. Thereby, as shown in FIG. 3, the diaphragm 43 in the suction tank 40 is pulled up and comes into contact with the ceiling surface of the suction tank 40. Actuating valve V is controlled

4 Since opening / closing is controlled by the device 50, air can be sucked from the drainage flow path 5 at an optimal timing.

[0052] Because the negative pressure accumulated in the negative pressure tank 30 is used, the diaphragm 43 moves to the first chamber 41 in a short time, and the air in the drainage flow path 5 is sucked into the second chamber 42 in a short time. can do. At this time, the water level in the toilet bowl 2 is sufficiently high due to the water supply from the water supply pipe 10, and the water head difference between the water seal part 4 and the highest part 4a is sufficiently large. For this reason, the wash water in the toilet bowl 2 is expelled to the drainage channel 5 by the urging force superimposed by this head difference and the negative pressure in the drainage channel 5, and the drainage channel 5 is quickly discharged. When the washing water is full, a powerful siphon action occurs, and a small amount of washing water forms an early discharge flow.

[0053] The filth collected in the center of the toilet bowl 2 due to the swirling flow formed in the toilet bowl 2 is reliably transferred to the drainage channel 5 along with the washing water drained to the drainage channel 5 by siphoning. To be discharged. In addition, the water level in toilet bowl 2 decreases while swirling, and the water level in toilet bowl 2 Since the height of the lowermost part 2a at the rear part of the toilet bowl 2 is approached, heavy filth is reliably discharged from the water sealing part 4 to the drainage channel 5 together with the washing water.

The drainage flow path 5 is blocked from the downstream side by the staying part 6, and the drainage flow path 5 is a closed space existing between the water sealing part 4 and the staying part 6. In addition, the suction tank 40 with an appropriately selected internal volume ensures that a constant amount of air is sucked from the drainage flow path 5 that is made into a closed space, so that the siphon action can be stably generated with a small amount of washing water. Can do. Further, the cleaning water containing the filth in the drainage channel 5 is not sucked into the second chamber.

[0055] The suction tank 40 is partitioned into a first chamber 41 and a second chamber 42 by a diaphragm 43, and only the second chamber 42 communicates with the drainage channel 5. This ensures that the cleaning water containing odors and the air containing odors are prevented from entering the negative pressure tank 30 ejector 21 side.

[0056] [Initial stage of washing water addition process (Fig. 4)]

At time t in Fig. 7, the water level of toilet bowl 2 is close to the height of the lowest part 2a at the rear of toilet bowl 2.

Three

At this moment, the controller 50 opens the on-off valve V. This

2

Then, a part of the cleaning water in the water supply pipe 10 is divided and supplied to the rim 3 through the pipe 13, the jet pump 24 and the pipe 25. At this time, the wash water stored in the water tank 20 is sucked from the water suction port 24a of the jet pump 24 by the water flow of the wash water flowing in the jet pump 24, and the pipe 25 is washed together with the wash water from the pipe 13. Supplied to rim 3 through. As a result, the water level in the tank 20 decreases.

[0057] Thus, before the water level in the toilet bowl 2 becomes lower than the lowest part 2a at the rear of the toilet bowl 2 and air flows into the drainage channel 5 from the toilet bowl 2 and the siphon action ends, the water supply pipe 10 In addition to the wash water supplied from the rim 3 to the rim 3, wash water is also supplied from the pipe 25 to the toilet bowl 2. For this reason, the water sealing part 4 is not broken, and the washing water in the toilet bowl 2 continues to rotate and the siphon action continues, so that the filth is more reliably discharged.

[0058] The wash water additionally supplied to toilet bowl 2 is a combination of the wash water in water tank 20 and the wash water flowing in jet pump 24. The amount of water supplied to toilet bowl 2 per unit time Will increase. For this reason, the swirl flow in the toilet bowl 2 becomes strong and the siphon action continues for a long time, so that the filth can be discharged more reliably. In addition, due to the amount of washing water additionally supplied to the toilet bowl 2, the filth remaining in the toilet bowl 2 is discharged so as to be pushed out into the drainage channel 5. In addition, the wash water additionally supplied to toilet bowl 2 is the same as the wash water supplied to ejector 21 in the toilet bowl washing / negative pressure accumulating stroke and intake stroke, and is used in the water tank 20. Effective use is planned.

[0059] Since the opening / closing control of the opening / closing valve V is performed by the control device 50, the opening / closing valve V is stored in the water tank 20.

2

Wash water can be additionally supplied to toilet bowl 2 at the optimal timing. For this reason, the siphon action is reliably formed, and filth is reliably discharged.

[0060] Since it takes time to drain the wash water additionally supplied to the toilet bowl 2 into the drainage flow path 5, the wash water in the toilet bowl 2 is not drained into the drainage flow path 5 at once. It can prevent the generation of a large breaking sound.

[0061] Since the lower force of the tank 20 also takes out the washing water and supplies it to the toilet bowl 2, the bubbles are separated in the washing tank 20 in the washing tank 20, and the additionally supplied washing water contains no or almost no bubbles. It will not stop. As a result, when the additionally supplied wash water flows into the toilet bowl 2, no abnormal noise such as a plosive sound caused by the burst of bubbles is generated.

[0062] [End of cleaning water addition process (Figure 5)]

As shown in Fig. 5, at time t after a while from time t in Fig. 7, the open / close valve V is

3 4 2

Closed by 50. As a result, the supply of the washing water from the pipe 25 to the rim 3 is eliminated, and the siphon action ends when the air flows into the drainage flow path 5 from the toilet bowl 2.

[0063] At time t in FIG. 7 when the on-off valve V is closed, the water level in the water tank 20

twenty four

Immediately before the water suction port 24a provided in the gate portion becomes lower. For this reason, the air in the water tank 20 is prevented from being sucked from the water suction port 24a, and the jet pump 24 is prevented from sucking the air in the water tank 20 to generate abnormal noise. It is also possible to prevent the generated cleaning water from flowing out of the rim 3 through the pipe 25 and generating abnormal noise.

[0064] [Opening to the atmosphere 'water-covering process (Figure 6)]

At time t in Fig. 7, the control valve 50 closes the operating valve V and the atmosphere release valve V

5 4 5 is opened. As a result, the first chamber 41 in the suction tank 40 returns to the atmospheric pressure, the diaphragm 43 is pushed downward, contacts the bottom surface of the suction tank 40, and returns to the state shown in FIG. Thereafter, the air release valve V is closed by the control device 50 at time t in FIG.

6 5

[0065] After sucking air from the drainage flow path 5 into the second chamber 42, the air release valve V is opened to open the first chamber 41. By returning the pressure to atmospheric pressure, the diaphragm 43 is reliably returned to the original position, and the next cleaning can be performed stably.

[0066] When the siphon action has ended and the force has also passed for a while, and washing water has accumulated in the toilet bowl 2, t in FIG.

At time 7, main valve V is closed. This returns to the non-cleaning state and cleaning is complete.

1

To do.

[0067] Therefore, the toilet bowl cleaning apparatus of the embodiment can discharge filth with a small amount of washing water in a short time and reliably, and can further quiet the washing sound.

[0068] The above embodiment is an example of the present invention, and the present invention is not limited to the above embodiment.

[0069] For example, the lowest part 6b of the stay part 6 may be slightly higher than the highest part 6a. In this case, even if washing water accumulates in the retention portion 6, the water surface height is lower than the lowest portion 6b, but negative pressure is applied to the drainage flow path 5, and a large amount of washing water is contained in the retention portion 6. When flowing in, the water level in the retention part 6 rises above the lowest part 6b, and the drainage flow path 5 and the drainage outlet 7 side are sealed, so the drainage between the sealing part 4 and the retention part 6 The flow path 5 becomes a closed space, and air can be sucked efficiently.

[0070] In the above embodiment, the base end of the pipe 32 provided with the atmosphere release valve V is connected to the suction tank 40.

Five

The force connected to the upper part of the intake pipe 31 is opened to the atmosphere between the operating valve V and the suction tank 40.

Four

The proximal end of the pipe 32 with the valve V may be connected.

Five

[0071] Further, a valve may be provided on the upstream side of the ejector 21 of the pipe 12, and the valve V may be opened after the valve is closed in the washing water addition process. In this case, the pipe 13

2

Since the amount of washing water that is generated increases, the washing water in the water tank 20 is sucked and discharged more strongly by the jet pump 24, and the washing water flowing through the pipe 25 becomes stronger.

[0072] Further, the control means mechanically opens and closes each valve V, V, V and V.

1 2 4 5

May be. When each valve is mechanically opened and closed, for example, a water turbine is provided in the water supply pipe 10, the rotation of the turbine is transmitted to a shaft equipped with a plurality of cams via a gear train, and each cam driven type is rotated by the rotation of each cam. Try to open and close the valve.

Further, as shown in FIG. 9, an electrically driven decompression pump 35 as a negative pressure generator is connected to the proximal end of the intake pipe 31, and the distal end of the intake pipe 31 is connected to the upper portion of the suction tank 40. May be. This In this case, the diaphragm 43 of the suction tank 40 can be pulled up by operating the decompression pump 35 by controlling the decompression pump 35 with the control means. For this reason, the pulling speed of the diaphragm 43 can be arbitrarily adjusted, and the speed of sucking air from the drainage flow path 5 can be easily adjusted.

[0074] Also, at time t in FIG. 7 when the on-off valve V is closed, the water level in the water tank 20 is

twenty four

It may be after it becomes lower than the water suction port 24a. In this case, since most of the washing water stored in the water tank 20 can be used, the water tank 20 can be downsized. Industrial applicability

[0075] The present invention is applicable to flush toilets.

Claims

The scope of the claims

[1] First water supply means for supplying cleaning water to the toilet bowl of the toilet bowl body, and second water supply means for additionally supplying cleaning water to the toilet bowl in addition to the cleaning water supplied from the first water supply means, A drainage flow channel connected to the downstream side of the water seal portion of the toilet body, an intake means for sucking air from the drainage flow channel, the first water supply means, the second water supply means, and the A toilet cleaning device comprising a control means for controlling the intake means,

The first water supply means is configured to be able to supply wash water from the rear side of the toilet bowl so that a swirling flow is formed in the toilet bowl,

The control means activates the intake means after the operation of the first water supply means to cause a siphon action, and opens the on-off valve after the swirl flow is formed and before the siphon action ends. A toilet cleaning device characterized by that.

[2] The intake means includes a negative pressure generator, and a suction tank partitioned into a first chamber and a second chamber by a movable wall that can move forward and backward,

The first chamber is communicated with the negative pressure generator and the intake pipe, and is communicated with the atmosphere via an atmosphere release valve.

The second chamber is communicated with the drainage channel by a communication path,

The toilet flushing device according to claim 1, wherein the control device controls the negative pressure generating device and the air release valve.

[3] The negative pressure generator stores an ejector that generates a negative pressure when cleaning water is passed, and a negative pressure that is generated when the ejector sucks internal air, and stores the negative pressure in the first chamber. The toilet flushing device according to claim 2, further comprising a negative pressure tank communicated by an intake pipe.

[4] The toilet bowl cleaning device according to claim 3, wherein the cleaning water discharged from the ejector is stored in the water tank.

[5] The drainage flow path is provided with a retention portion that retains washing water and eliminates the force of reducing the communication area, and the intake means sucks air between the water seal portion and the retention portion. The toilet bowl cleaning device according to any one of claims 1 to 4, wherein