JP2007077666A - Toilet blow flushing water producing apparatus and toilet bowl flushing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl flushing water producing apparatus and a toilet bowl flushing system capable of dissolving and eliminating formed and accumulated urolith. <P>SOLUTION: The toilet bowl flushing water producing apparatus comprises an on-off valve for opening/closing a passage of flushing water supplied to a flush toilet bowl; a discharger capable of causing electric discharge to produce nitrogen oxide gas by applying voltage between at least a pair of electrodes; a dissolution part provided in the passage of flushing water to dissolve the nitrogen oxide gas produced by the discharger, in the flushing water; and a control part capable of controlling the on-off valve and the discharger. The control part opens the on-off valve to dissolve the nitrogen oxide gas in the flushing water passing through the dissolution part, and discharges the flushing water from the dissolution part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a toilet flushing water generating apparatus and a toilet flushing system, and more particularly, a toilet bowl that eliminates accumulation of urinary stone by flowing acidic water generated by a reaction between nitric oxide gas and flushing water to a flush toilet or a drainpipe. The present invention relates to a cleaning water generating apparatus and a toilet bowl cleaning system.

  The flush toilet is cleaned by manual washing by the user's button operation, etc., or by automatic washing that automatically flows clean water or medium water when the use of the toilet is completed when the person is standing in front of the toilet. The degree is maintained. However, in urinals and urinals, "urine stone" adheres to the inside of the pipe and narrows the passage of drainage, or adheres to the surface of the toilet and impairs its appearance, becoming a hotbed for bacterial growth and producing odor. I will release. Once attached, urine stones are difficult to remove by normal cleaning, and can only be removed with a brush. In addition, it is extremely difficult to remove urinary stones formed and accumulated in the drainage pipe directly using a brush or the like. Therefore, it is necessary to request a specialist to remove the urine stones, which is a heavy burden. Yes.

  Looking at the sanitary method of this flush toilet, for example, a method of disinfecting bacteria that is the main cause of urinary stone formation is disclosed (Patent Document 1). There is room for improvement in order to make it possible to remove the already fixed urine stone.

In addition, a method is disclosed in which an acidic substance is added to washing water to prevent the scale from sticking (Patent Document 2). However, in the case of this method, it is necessary to supply chemicals such as acidic substances, and improvement is required in terms of maintenance and cost.
JP 2000-80701 A Japanese Patent Laid-Open No. 10-1995

  The present invention provides a toilet flushing water generating device and a toilet flushing system that can dissolve and remove urinary stones that have been formed and accumulated.

In order to achieve the above object, according to one aspect of the present invention,
An on-off valve that opens and closes the flow path of the wash water supplied to the flush toilet,
A discharger capable of generating discharge by applying a voltage between at least a pair of electrodes to generate nitric oxide gas;
A dissolving part that is provided in the flow path of the cleaning water and dissolves the nitrogen oxide gas generated by the discharger in the cleaning water;
A control unit capable of controlling the on-off valve and the discharger;
With
The control part opens the on-off valve and dissolves the nitric oxide gas in the washing water passing through the dissolving part and discharges it from the dissolving part.

According to another aspect of the present invention,
The toilet bowl cleaning water generator,
Flush toilet,
A toilet bowl cleaning system is provided.

  According to the present invention, acid water is generated using a discharge technique, and the formed urine stone is dissolved and removed by flowing it into a urinal, a urinal or a drainage pipe thereof, and at the same time, water saving is also possible. A toilet flushing water generating device and a toilet flushing system can be provided, and the industrial merit is great.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of a cleaning system using a toilet flushing water generating apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating the operation of the cleaning system according to the embodiment of the invention.
The toilet flushing water generating apparatus of the present embodiment includes a control unit 10, a discharger 20, a check valve (backflow prevention valve) 25, an air supply pipe 31, a dissolving part 35, a water supply pipe 50, and a water supply valve 60. And comprising. That is, on the downstream side of the water supply valve 60, a dissolving unit 35 is provided that generates nitric oxide water by dissolving nitric oxide gas in the tap water W. The discharger 20 is connected to the melting part 35 via the air supply pipe 31. The air supply pipe 31 is provided with a check valve 25. A water supply pipe 50 is connected to the downstream side of the dissolving portion 35 so that flush water can be supplied to the toilet 70. The discharger 20, the melting part 35, and the water supply valve 60 are synchronized and controlled by the control part 10. It is desirable to form portions that are in contact with acidic water, such as the dissolving portion 35 and the water supply pipe 50 downstream thereof, from a material made of acid resistance.

This toilet flushing water generating apparatus can be implemented by periodically switching between a “normal washing mode” that is normally used and an “acidic water washing mode” that will be described later, for example, with a timer or the like.
In the “normal cleaning mode”, for example, when the water supply valve 60 is opened and closed by the control unit 10, the water is once supplied to the dissolving unit 35, but the water passes through as it is and the cleaning water is supplied to the toilet 70, so Is done. At this time, typically, the use of the toilet 70 is detected by a human body detection signal from a human body sensor (not shown), and washing water is automatically poured. Alternatively, the user who uses the toilet bowl 70 may operate the valve, the button, or the like to cause the flush water to flow through the toilet bowl 70.

  On the other hand, when performing cleaning in the “acidic water cleaning mode” according to the present embodiment, first, the water supply valve 60 is opened by a signal from the control unit 10, water is introduced into the dissolving unit 35, and at the same time, air is supplied. Nitrogen oxide gas (NOx) generated by being decomposed by the “discharger 20” is introduced into the dissolving part 35 through the check valve 25 to generate acidic water (step S100). At this time, in order to prevent the nitrogen oxide gas from being discharged to the outside in a state where it is not dissolved in the washing water, the water supply valve 60 is opened and water is introduced into the dissolving portion 35, and then the nitrogen oxide gas is introduced into the dissolving portion 35. It is desirable to introduce.

  And the acidic water produced | generated in this way is poured into the toilet bowl 70 or the drain pipe 80 (step S110). Actually, these steps are executed simultaneously at the point where the acidic water is sequentially supplied (step S110) while the acidic water is generated (step S100).

In the present specification, the “air decomposition gas” refers to a gas generated by discharging in the air. The gas constituting the air is not only simply decomposed, but these decomposed gases are newly combined. Gas generated in this way is also included. For example, not only a gas in which nitrogen (N ₂ ) or oxygen (O ₂ ) is decomposed but also nitrogen oxide gas generated by newly combining nitrogen and oxygen is included in the “air decomposition gas”. To do.

  Here, the “acidic water cleaning mode” of the present embodiment can be switched instantaneously to the “normal cleaning mode”. That is, in the “normal cleaning mode”, even if water is supplied to the dissolving part 35 as described above, it passes through the dissolving part 35 and is supplied to the toilet 70. On the other hand, in the “acidic water cleaning mode”, the cleaning water is supplied to the dissolving unit 35, and at the same time, the nitric oxide gas generated by decomposition in the discharger 20 is supplied to the dissolving unit 35 to generate acidic water. Then, the toilet bowl 70 can be supplied.

The acidic water supplied in this manner dissolves urinary stones, so that urinary stones already formed and accumulated can be dissolved and removed while preventing formation of urinary stones in toilet bowl 70 and drain pipe 80.
As described above, according to the present embodiment, acid water is generated using discharge and is supplied to a flush toilet or a drain pipe thereof, so that urine stone can be dissolved and removed. As a result, a water-saving effect is also obtained.

  Next, the discharger 20 that can be used in the present embodiment will be described more specifically. Fig.3 (a) is a schematic diagram which illustrates the discharge device 20 of the washing water production | generation apparatus which concerns on this embodiment, (b) is sectional drawing of the AA line.

As shown in the figure, a packed bed type discharge reactor can be used as the discharger 20. This discharge reactor has, for example, a structure in which a large number of dielectric pellets 23 are filled between a cylindrical inner electrode 21 and a cylindrical outer electrode 22 provided so as to surround the periphery thereof. For example, when the interval between the inner electrode 21 and the outer electrode 22 is about 14 millimeters and the particle size of the pellet 23 is about 1 millimeter, the gap between the electrodes 21 and 22 is 100 to several kilohertz, 1 kilovolt to 10 kilovolts. When an AC voltage is applied, a discharge is generated in the gap of the dielectric pellet 23. When air is passed therethrough, the air is once decomposed into nitrogen atoms and oxygen atoms, and then recombined, for example, nitrogen oxide gas such as NO (nitrogen monoxide) and NO ₂ (nitrogen dioxide), or O ₃ Air decomposition gas such as (ozone) is generated.

Here, as a material of the dielectric pellet, for example, a ferroelectric such as barium titanate (BaTiO ₃ ) can be used. Other discharge methods that can be used in the present embodiment include OAUGDP (One Atomosphere Uniform Glow Discharge Plasma) using glow discharge, PACT (Plasma-Assisted Catalytic Technology) for plasma discharge between catalysts, corona discharge, and silent operation. Discharge etc. are mentioned.

As will be described in detail later, when air is decomposed at a low voltage, nitrogen oxide gas containing ozone molecules (O ₃ ) is formed. The ozone aqueous solution obtained by dissolving these ozone in tap water is sterilized. Although effective, it is weakly acidic, so the effect of dissolving urinary stones is poor. However, as will be described later, by switching the discharge voltage, the ozone aqueous solution as the “sterilizing water cleaning mode” and the acidic water as the “acidic water cleaning mode” are selectively switched or used in combination. can do.

Next, the generation characteristics of NOx gas by the discharger 20 will be described.
FIG. 4 is a graph illustrating the transition of the NOx gas generation amount with respect to the voltage in the reaction path length perpendicular to the main surface of the discharge reactor. Here, the horizontal axis is voltage (kilovolts), and the vertical axis is NOx gas production (ppm).

  This experiment was evaluated using the discharge reactor described above with reference to FIG. 3 under the following conditions. That is, the distance between the electrodes of the discharge reactor is 14.5 millimeters, the reaction path length L is three types (L is 117 millimeters, 42 millimeters, 11 millimeters), the frequency of the voltage applied between the electrodes is 1000 Hz, and the packed bed type discharge reactor. The NOx gas was generated by applying and discharging air at a rate of 2 liters / minute.

  As shown in the figure, the NOx gas increases as the voltage increases in any reaction path length. For example, when the applied voltage is 5 kilovolts, the NOx gas is discharged in a discharge reactor having a reaction path length L of 117 mm. The amount produced is 950 ppm.

  FIG. 5 is a graph illustrating the transition of the NOx gas generation amount with respect to the reaction path length of the discharge reactor. The horizontal axis is the reaction path length (millimeters), and the vertical axis is the NOx gas production (ppm).

  At any applied voltage, the NOx gas generation amount increased almost proportionally with the increase of the reaction path length. For example, when the reaction path length was 117 mm, the result was that the NOx gas generation amount was 950 ppm.

  FIG. 6 is a schematic view illustrating the structure of the dissolving portion 35 of the toilet flushing water generating apparatus according to the present embodiment, (a) a cross-sectional view corresponding to a region R in FIG. 1, and (b) A- It is sectional drawing of A line. As shown in the figure, for example, a structure of “ejector” can be used for the melting portion 35. The ejector includes a nozzle portion 32 in which a flow path of water supplied from the water supply pipe 50 is narrowed, and a bubble mixing section 36 in which the flow path is expanded on the downstream side. An air supply pipe 31 is connected to the bubble mixing part 36 so that nitrogen oxide gas such as NOx generated by the discharger 20 can be introduced. In addition, for example, an O (O) ring 33 is appropriately provided at the connecting portion between the melting portion 35 and the air supply pipe 31 as a liquid leakage prevention.

When water is supplied to the dissolving portion 35 from the water supply pipe 50, the pressure is increased in the nozzle portion 32 and the flow velocity is increased. Then, the pressure is reduced in the bubble mixing portion 36, and a suction force due to the entrainment effect is generated. Due to this suction force, the nitrogen oxide gas is sucked through the air supply pipe 31 and is mixed and dissolved as bubbles in the water to generate acidic water such as nitric acid (HNO ₃ ) or nitrous acid (HNO ₂ ).

  That is, according to the present embodiment, by utilizing the gas suction action and gas-liquid mixing action by the ejector, in a short time, and in this specific example, if the nitric oxide gas is supplied to the intake pipe 31, the acidic water is If it is generated and nitric oxide gas is not supplied to the intake pipe 31, cleaning with ordinary cleaning water is possible. That is, it is possible to selectively use normal water cleaning and acidic water cleaning without switching the water flow path.

  On the other hand, in the present embodiment, as described above with reference to FIG. 3, by adjusting the voltage applied to the discharger 20, it is possible to switch between the cleaning mode using ozone water and the cleaning mode using acidic water. is there.

FIG. 7 is a flowchart illustrating switching of cleaning modes that can be used in this embodiment.
That is, when a high voltage of about 5 kilovolts (kV) is applied to the discharger 20 as described above with reference to FIG. 3 to decompose the air, a mixed gas rich in NOx gas is generated. On the other hand, when a low voltage of about 2 kilovolts (kV) is applied, an O ₃ gas rich mixed gas is generated. This is because the dissociation energy of N ₂ gas in air and the dissociation energy of O ₂ gas are different. When the energy given by discharge is high, a mixed gas rich in NOx gas is obtained, and when the energy given by discharge is low, ozone gas A rich gas mixture is produced.

  In this way, since the components of the air cracked gas change depending on the applied voltage, using this property, depending on the state of the flush toilet and drain pipe, "sterilized water washing mode" and "acidic water washing mode" It is possible to select and execute either of these.

  For example, when air is discharged and decomposed at a low applied voltage, an ozone-rich air decomposition gas is generated. Therefore, using ozone water obtained by introducing this air decomposition gas into tap water, a flush toilet or a drain pipe "Sterilized water cleaning mode" can be executed to sterilize. On the other hand, it is possible to execute an “acidic water cleaning mode” in which an air decomposition gas rich in NOx gas is generated by applying a high voltage and urine stone is dissolved and removed using acidic water. As described above, by changing the voltage applied to the discharger 20, it is possible to appropriately carry out cleaning modes suited to the respective purposes.

Moreover, according to this embodiment, it is possible to save water with respect to the amount of cleaning water that flows only tap water. This is because accumulation of urinary stones and generation of odors can be prevented even with a small amount of water by appropriately executing the “acidic water washing mode” of this embodiment.
Next, a cleaning system according to another specific example of the present invention will be described.
FIG. 8 is a schematic diagram showing a main configuration of a cleaning system using the toilet flushing water generating apparatus according to the second specific example of the present invention.
In these drawings, the same elements as those described above with reference to FIGS. 1 to 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

That is, in this specific example, the pressurizing unit 38 is connected to the gas upstream side of the discharger 20. The water supply valve 60, the dissolving part 35, the discharger 20, and the pressurizing part 38 are synchronized and controlled by the control means 10.
In this specific example, in the “normal cleaning mode”, the toilet bowl 70 is cleaned by opening and closing the water supply valve 60.

  On the other hand, when cleaning is performed in the “acidic water cleaning mode”, first, pressurized air is supplied to the discharger 20 by the pressurizing unit 38 made of, for example, a compressor to generate nitrogen oxide gas. Is supplied to the melting section 35. That is, since the nitrogen oxide gas can be pressurized and supplied to the dissolving portion 35, the efficiency of dissolving the nitrogen oxide gas into the cleaning water is improved, and it becomes possible to generate acidic water having a higher concentration. Here, the melting portion 35 may be, for example, an ejector type as described above with reference to FIG. 6, or may be described later with reference to FIGS.

FIG. 9 is a schematic diagram showing a main configuration of a cleaning system using the toilet flushing water generating apparatus according to the third specific example of the present invention.
In this specific example, a flow dividing portion 45 is provided on the downstream side of the dissolving portion 35. The discharge path B1 branched downstream from the flow dividing means 45 is connected to the discharge pipe 80.

  During the operation, in the “normal cleaning mode”, the tap water W is supplied to the toilet bowl 70 via the diverter 45.

On the other hand, in the “acidic water cleaning mode”, the nitric oxide gas generated in the discharger 20 is supplied to the dissolving unit 35, and the tap water W and the nitric oxide gas are confused in the dissolving unit 35 to generate acidic water. To do. The acidic water is branched into the discharge path B1 by the diverter 45, flows into the drain pipe 80 on the downstream side of the toilet 70, and dissolves and removes urine stone formed and accumulated in the drain pipe 80. That is, the acid water is directly supplied to the drain pipe 80 without going through the toilet bowl 70.
In this specific example, it is also possible to supply the acidic water generated in the dissolving part 35 from the diversion part 45 to the toilet 70, or to supply the toilet 70 and the drain pipe 80 at the same time. .

FIG. 10 is a schematic diagram showing a main configuration of a cleaning system using the toilet flushing water generating apparatus according to the fourth specific example of the present invention.
In this specific example, a diversion part 45 is provided between the water supply valve 60 and the toilet bowl 70. The discharge path B1 branched from the diversion means 45 to the downstream side is connected to the dissolving part 35, and the discharge path B2 on the downstream side of the dissolving part 35 is connected to the discharge pipe 80.

  During the operation, in the “normal cleaning mode”, the water supply valve 60 is opened and closed, whereby the tap water W is supplied to the toilet 70 via the diverter 45.

  On the other hand, in the “acidic water cleaning mode”, the water supply valve 60 is opened, and the tap water branched by the diversion unit 45 is introduced into the dissolving unit 35 through the discharge path B1. At the same time, the nitric oxide gas generated in the discharger 20 is supplied to the dissolving portion 35, and the tap water W and the nitric oxide gas are confused in the dissolving portion 35 to generate acidic water. The acidic water flows through the discharge path B2 to the drain pipe 80 on the downstream side of the toilet 70, and dissolves and removes urine stone formed and accumulated in the drain pipe 80.

FIG. 11: is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing water production | generation apparatus concerning the 5th example of this invention.
The basic structure of this specific example is the same as that of the third specific example described above with reference to FIG. 10, but the discharge path B1 on the downstream side of the dissolving portion 35 communicates with a trap portion 74 and a rim portion 72 of a toilet 70 described later. Has been. When performing cleaning in the “acidic water cleaning mode”, the acidic water generated in the dissolving unit 35 is directly supplied to the trap unit 74 and the rim 73 in which urine stones are likely to accumulate via the flow dividing unit 35. The urine stone formed and accumulated in these parts can be efficiently dissolved, and the hygiene of the toilet bowl 70 can be maintained. Moreover, in this specific example, the toilet bowl can be washed by supplying the acidic water generated in the dissolving part to both the water supply pipe 50 branched from the diversion part 45 and the drainage channel B1.

FIG. 12: is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing water production | generation apparatus concerning the 6th specific example of this invention.
The basic structure of this example is the same as that of the fourth example described above with reference to FIG. 10, but the discharge path B <b> 2 on the downstream side of the dissolving part 35 is communicated with the trap part 74 and the rim part 72 of the toilet 70. Yes. For this reason, when cleaning in the “acidic water cleaning mode” is performed, the acidic water generated in the dissolving unit 35 is concentratedly supplied to the trap unit 74 and the rim 73 where urine stones easily accumulate, and forms and accumulates in these portions. Thus, the urine stones can be efficiently dissolved and the hygiene of the toilet bowl 70 can be maintained.
In this specific example, flush water is allowed to flow from the diverting part 45 to both the dissolving part 35 and the toilet 70, and the toilet part 70 and the rim part 72 are washed with acid water while washing the toilet 70 with the wash water. You can also Thereby, the density | concentration of acidic water is diluted within the range which can be drained with the toilet bowl 70. FIG.

In the above, the toilet bowl washing water production | generation apparatus which illustrated other embodiment of this invention was demonstrated.
Next, another specific example of the region R including the dissolving portion 35 of FIG. 1 described above will be described.

  FIGS. 13A and 13B are (a) a cross-sectional view illustrating a second specific example of the region R including the melting portion 35 related to FIG. 1 and (b) a cross-sectional view taken along line AA. In these drawings, the same elements as those described above with reference to FIGS. 1 to 13 are denoted by the same reference numerals, and detailed description thereof is omitted. In this specific example, a bubble dispersion body 37 having a large number of apertures is disposed on the peripheral side wall of the inner water channel of the dissolving portion 35 at the joint portion between the dissolving portion 35 and the air supply pipe 31. An air layer 39 communicating with the air supply pipe 31 is provided outside the bubble dispersion body 37. A pressurizing unit 38 is provided on the gas upstream side of the discharger 20.

  When air pressurized from the pressurizing unit 38 is introduced into the discharger 20 to generate nitrogen oxide gas and introduced into the water channel through the bubble dispersion 37, the water flow is generated in the openings provided in the bubble dispersion 37. Inflates. The swelling of the nitrogen oxide gas is cut off by the shearing force received from the flow of the cleaning water at each opening to form fine bubbles, and the acidic water is generated by being dispersed, mixed and dissolved in the cleaning water.

  Here, the bubble dispersion 39 also acts as a buffer region for relaxing and uniforming the pressure fluctuation and pressure distribution of the pumped nitric oxide gas. As a result, a stable concentration of acidic water can be generated with almost no pulsation.

  FIG. 14 is a photograph of the water discharge discharged from the dissolving portion 35 shown in FIG. 13 taken with a high-sensitivity high-speed camera. In other words, this photograph is a photograph of the water discharge flow of acidic water discharged by removing the water supply pipe 50 or the drainage channel B2 downstream of the dissolving portion 35.

  It can be confirmed that the nitrogen oxide gas is mixed in the tap water W as a large number of fine bubbles through the bubble dispersion 37 and a gas-liquid mixed state is formed. This gas-liquid mixed state is formed by a mixture of micro bubbles generated by the bubbles being cut off by the shear stress of the water flow. For this reason, the contact area with the gas liquid is expanded, and the gas and the liquid are further agitated. Therefore, dissolution of the nitrogen oxide gas into the cleaning water is promoted, and acidic water can be efficiently generated.

FIG. 15A is a cross-sectional view illustrating a third specific example of the melting portion 35 and the discharger 20 of FIG. 1, and FIG. 15B is a cross-sectional view taken along line AA ′.
In this specific example, a shower head 43 having, for example, a convergent umbrella type vibration valve is brought into close contact with the connecting portion of the melting portion 35 at the joint portion between the melting portion 35 and the air supply pipe 31. An ultrasonic transducer 42 is provided on the back surface. The ultrasonic transducer 42 oscillates ultrasonic waves according to the drive output from the drive circuit 41. The shower head 43 and the ultrasonic transducer 42 communicate with the air supply pipe 31. When nitrogen oxide gas is introduced from the discharger 20 while the shower head 43 is vibrated by the ultrasonic transducer 42, it is mixed into the cleaning water as fine bubbles such as microbubbles and nanobubbles. Thus, since the contact frequency of gas and liquid improves, acidic water can be generated with higher efficiency.

The specific example of the region R including the dissolving portion 35 has been described above.
Next, a portion where urinary stones are easily formed and accumulated in the toilet bowl will be described.

16 and 17 are (a) a front view and (b) a cross-sectional view taken along line AA illustrating the basic structure of the urinal 70.
As shown in these drawings, the urinal 70 connected to the drain pipe 80 has a ceramic bowl 71 having an opening so as to face the human body.

  The urine water discharged to the bowl 71 facing the human body is collected by a trap part 74 provided at the bottom of the urinal 70 while drooping along the surface of the bowl 71 and discharged to a drain pipe 80 communicated therebelow. The Here, a rim portion 73 bent toward the bowl direction is provided on the edge surface of the opening to prevent the splash of rinsing water and splash of urine water.

  In the above-described “normal cleaning mode”, the tap water W discharged from the spreader 72 provided with the water supply pipe 50 communicating with the inner ceiling portion of the urinal 70 flows downward along the bowl 71, The urine that spreads to the portion 73 and adheres to the surface of the bowl 71 is removed and discharged to the trap portion 74. Here, in the U-shaped drain pipe 80 provided below the trap portion, urine water diluted with tap water W used for cleaning is retained as “sealed water” and is emitted from the sewer pipe. Prevents backflow of bad odor.

  In such a urinal 70, for example, the back side of the rim portion 73 surrounded by a broken line D is difficult to see and a cleaning jig normally used is difficult to reach, so urine stones are easily formed and accumulated. Moreover, since the trap part 74 where urine is collected has a high frequency of urine water adhesion, urine stones are easily formed. Further, since the drainage pipe 80 in which the sealed water stays is extremely difficult to clean with a commonly used cleaning jig, urine stones are easily formed and accumulated.

  On the other hand, according to the present embodiment, urine stone can be dissolved and hygiene can be maintained by supplying acidic water even in a place where it is difficult to reach these cleaning jigs.

  At this time, the acidic water discharged through the spreader 72 is appropriately diluted with the drainage retained in the trap of the urinal 70 or the sealed water retained in the drainage pipe 80, and the “drainage standard in the environmental standards for the preservation of living environment” It can be discharged after the pH of the acidic water is increased so as to satisfy (pH: 5.8 or more and 8.6 or less).

In the present embodiment, urine stones can be dissolved and removed not only for urinals but also for urinals.
18A is a front view, FIG. 18B is a top view, and FIG. 18C is a cross-sectional view taken along line AA.
As shown in the figure, the toilet bowl 90 has a ceramic bowl 71 having an opening that opens upward from the ground. The bottom of the bowl 71 is provided with a recess 93 for temporarily storing excrement, and the bottom of the recess 93 and the drain pipe 80 are connected by a drain groove 85. An “air layer” is provided above the joint between the drainage groove 85 and the drainage pipe 80 as a backflow prevention. A rim 73 bent in the bowl direction is provided at the periphery of the opening to prevent the urine water from bouncing back.

  The wash water is retained as “sealed water” to the extent that the water surface is formed at the inner corners of the drain groove 85 and the drain pipe 80, and the back flow of malodor emitted from the sewer pipe is suppressed.

  In the “normal cleaning mode”, the discharged excrement is temporarily stored in the recess. And the tap water W for water purification is supplied to the toilet bowl 90, the air layer of the junction part of the drainage groove 85 and the drainage pipe 80 flows out into the drainage pipe, and it becomes the state filled with the tap water W, and the siphon phenomenon occurs. Arise. The excrement that has received the flow of the tap water W is discharged to the drain pipe 80 through the drain groove 85 filled with the tap water W at once. Thereafter, the toilet is again filled with purified water to the extent described above.

  However, the rim 73 and the drainage groove 85 surrounded by the broken line D are difficult to see even if urine water or sewage adheres to them, and the normally used cleaning jig is difficult to reach, so urine stones are easily formed and accumulated. Moreover, since the recess part 93 where excrement is collected has a high frequency of excrement adherence, urine stones are easily formed. Further, the drain pipe 80 in which the sealed water stays is very difficult to clean with a commonly used cleaning jig, and is thus narrowed by the formation of urine stone.

  On the other hand, according to the present embodiment, even in a place where it is difficult to see and the cleaning jig is difficult to reach, the urinary stone can be dissolved and the formation of the urinary stone can be prevented by using acidic water as the washing water. Therefore, the hygienic state can be maintained.

Also in the case of such a toilet 90, the pH of the waste water in the “acidic water washing mode” is basically the same as that described above with reference to FIGS.
The basic structure of the flush toilet that can be used in the embodiment of the present invention has been described above. Next, the timing for cleaning the urinal or the toilet according to the present embodiment will be described.

That is, the control part 10 mentioned above regarding FIG. 1 can supply acidic water to a urinal or a urinal at a certain timing, and can dissolve and remove urine stone.
The timing can be performed by, for example, (1) use count, (2) on-time, (3) use record learning mode, or the like. In any of the methods, since the acidic water is diluted if it is usually washed immediately after flowing the acidic water, it is desirable to flow in a time zone that is not used as much as possible.

  First, (1) when flowing according to the number of times of use, every time the “normal washing mode” is used, the mode is switched to the “acidic water washing mode”, and the acidic water is supplied to the flush toilet 70. The mode is switched to “mode” and the same operation is repeated.

  (2) When flowing according to the scheduled time, at the predetermined time or when the predetermined time elapses, the mode is automatically switched to the “acidic water washing mode”, and the acidic water is supplied to the flush toilet 70. And the same operation is repeated. This time interval can be, for example, several tens of minutes or several hours. Also in this case, it is desirable that the person does not use the flush toilet or uses the “acidic water washing mode” at night, for example, at low frequency.

FIG. 19 is a schematic diagram illustrating the relationship between the number of bacteria and the time illustrating the propagation behavior of bacteria per day.
Here, the horizontal axis is time (hour), and the vertical axis is the number of bacteria (CFU (Colony Forming Unit) / ml).

  As shown in the figure, during the daytime hours when the urinal 70 is easily used, the frequency of use is relatively high, so the number of washings is high and bacteria are difficult to propagate. On the other hand, since the frequency of using the toilet is reduced at night, the number of washings is also reduced, so that bacteria are likely to propagate, and the number of bacteria at night is higher than the number of bacteria during the day. By repeating this every day, bad odor is generated or urine stones are formed and accumulated in the flush toilet and the drain pipe 80.

Therefore, according to the present embodiment, for example, when washing with acidic water as described above at night when bacteria are easy to propagate, urine stones are removed while the number of bacteria at night is controlled to be equal to or less than that in daytime. The flush toilet can be used without discomfort even immediately after the start of daytime use. At this time, for example, when the frequency of use of the toilet decreases and the number of bacteria begins to increase, for example, when acid water is run at 20:00, the toilet is used again the next day until the normal washing mode is executed. Urine stone can be dissolved by acidic water, which is effective.
Also in this case, the generation of acidic water can be performed not only at night but also during the daytime. That is, as described above with reference to FIG. 1, the “acid water cleaning mode” in which the nitric oxide gas is introduced into the dissolving portion as needed without requiring the generation time of the acidic water, and “normally the nitric oxide gas is not introduced” The “cleaning mode” can be selected and executed.

On the other hand, when (3) the usage record learning mode is used, for example, the timing of flowing acidic water can be statistically determined based on the usage frequency data of the flush toilet for the past several days.
FIG. 20 is a schematic diagram illustrating the change in the usage frequency data obtained in the usage record learning mode. Here, one day is divided into time zones of 24 blocks, and a counter and recognition are recorded.

  As this usage record learning mode, whether or not the user uses the urinal 70 is detected by a human body detection sensor or the like. “1” is incremented in the counter for blocks that are not detected as being used by the user, and “0” is substituted for the counter in the blocks used by the user. That is, if the user uses the block whose counter on the previous day is 1, the counter becomes “0”, and if the user does not use it, the counter becomes “2”. In this manner, the 3-day counter is calculated, and a block whose counter is “3” for 3 days is recognized as an “unused block”. The other blocks can be estimated that the user is using the urinal 70. Such frequency learning can always be carried out continuously. That is, it is possible to always learn the latest information regarding the use frequency. In addition, although the method of dividing one day into time zones of 24 blocks has been described here, it may be divided into a different number of blocks. Alternatively, as a timer means for periodically measuring time, It may be estimated statistically in association with.

  Then, based on the usage frequency data thus obtained, the timing of the “acidic water cleaning mode” is determined. For example, if the “acidic water washing mode” is executed at the start of the “unused block” time zone, the “normal washing mode” is immediately implemented to prevent the acid water from being diluted, and urine stones are efficiently used. Can be dissolved and removed.

When acidic water is allowed to flow out into a flush toilet or a drain pipe at the timing described above, urine stone can be dissolved and removed effectively.
In the above, the timing which wash | cleans a urinal or a toilet bowl by this embodiment was demonstrated.
Next, embodiments of the present invention will be described in more detail with reference to experiments conducted by the present inventors.
(Experiment 1)
FIG. 21 is a schematic view illustrating an experimental apparatus that models the components of the toilet flushing water generating apparatus according to this embodiment.

  In this experimental apparatus, air taken in from the air pump 109 is supplied to the discharger 20 (reactor) via the flow meter 108 to generate NOx gas. This NOx gas was introduced into a beaker 120 containing about 200 milliliters of tap water W through a bubbler 106 to perform bubbling to generate acidic water, and its pH behavior was measured. Here, the air supply amount of the air pump 109 was 2000 milliliters per minute.

Here, the tap water W is city water collected in Chigasaki City (Kanagawa Prefecture). The discharger 20 uses a Pecked bed type discharge reactor (the dielectric is pellet-shaped barium titanate (BaTiO ₃ )), the discharge path length is 42 mm, and an AC voltage with a frequency of 1 kilohertz and 10 kilovolts is used. Applied.

  FIG. 22 is a graph illustrating the pH behavior with respect to the reaction time obtained in this experiment. Here, the horizontal axis is the bubbling time (minutes), and the vertical axis is the pH.

  As the bubbling time increased, the pH of the tap water tended to decrease. For example, acidic water having a pH of “4” was obtained about 25 minutes after the start of discharge. That is, according to this experiment, it was confirmed that 200 milliliters of tap water W could be converted to acidic water having a pH of “4” in about 25 minutes.

  According to the present embodiment, by introducing the tap water W and the nitrogen oxide gas into the dissolving portion 35 at the same time, for example, acidic water having a pH of “4” can be obtained in about several seconds without taking time. .

(Experiment 2)
Next, Experiment 2 in which accumulation of urinary stones and dissolution of urinary stones by acidic water was examined will be described. FIG. 23 is an (a) appearance photograph and (b) an enlarged photograph of region C, illustrating the time-course manner when diluted urine is left statically.
The detailed conditions of this experiment are as follows.
That is, the diluted urine water having a composition ratio of 1 to 10 vol% urine water and 99 to 90 vol% tap water is replaced with the cylinder-shaped beaker 120 with a lid with a narrowed tip at a frequency of 5 times a day. However, the experiment of standing still was carried out for 4 months.
As a result, as shown in the figure, it was confirmed that the urine stone 125 was formed near the opening H in the beaker 120.

Next, the urine water contained in this beaker was replaced with acidic water having a pH of 4 to 5, and left standing for one month.
FIG. 24 shows (a) an appearance photograph and (b) an enlarged photograph of the region C showing the time-lapse state when the beaker 120 shown in FIG.

As a result, as shown in the figure, it was confirmed that the formed and accumulated urine stone was almost completely dissolved. From the above, it was confirmed that urine stone was dissolved by acidic water having a pH of about 4-5. . According to this example, acidic water having a pH of about 4 to 5 can be obtained without requiring time.

(Experiment 3)
Next, Experiment 3 for examining the dissolution rate of urine stone will be described.
FIG. 25 is a simple device diagram for immersing urine stone in acidic water.
That is, a beaker 120 including a plurality of acidic waters 124 having different pHs was prepared. Then, the urine stones 122 respectively collected from the toilets installed in the two buildings (A building and B building) were put into these beakers 120 and left statically for 6 hours. Note that the amount of urine stones introduced into each beaker 120 was 1 gram. Then, after 6 hours, the phosphate ion concentration contained in the acidic water 124 was measured.

FIG. 26 is a graph illustrating the relationship between the pH of acidic water obtained by this experiment and the phosphate ion concentration.
As shown in the figure, the phosphate ion concentration tends to increase as the pH of the acidic water 124 decreases (strong oxidation) regardless of the building from which the urine stone 122 is collected (Building A or Building B). It was. For example, in A building, when the pH of acidic water was lowered from 7 to 5, the phosphate ion concentration increased from 23 ppm to 33 ppm, and the phosphate ion concentration difference with respect to pH change was found to be 10 ppm. Here, it is considered that the difference between the results of Building A and Building B is that the characteristics of the formed and accumulated urine stone 122 are different due to differences in the drainage structure and usage of the toilets of each building. .

  Based on this graph, a method for calculating the dissolution rate of urine stone over time will be described below.

First, as a result of analyzing the urine stone 122, the content of inorganic substances was 5%. When the inorganic substance is calcium phosphate (Ca ₃ (PO ₄ ) ₂ : molecular weight 310), the content of phosphate ions (molecular weight 190) contained in 1 gram of urine stone 122 is 30.7 milligrams.

On the other hand, from the result shown in FIG. 26, the weight of phosphate ions in which acidic water is dissolved in 6 ml is 60 micrograms (10 ppm × 6 ml).
From the data described above, it can be estimated that the dissolution rate of 1 gram of urine stone immersed in acidic water at pH 5 for about 6 hours is about 0.2% (60 microliters / 30.7 milligrams). In reverse calculation, it takes about 3000 hours (125 days) to completely dissolve urine stone (dissolution rate 100%).

However, in actuality, when the urinal 70 is washed, for example, the washing water acts as an external force on the urine stone, and a force is applied to push it downstream. Since a portion of the urinary stone tissue is dissolved by the use of acidic water, the urinary stone is easily crushed. Therefore, even if the urinary stone is not completely removed, the probability of flowing away downstream by a normal washing water flow or the like increases. As a result, it is considered possible to remove urinary stones formed and accumulated in the toilet bowl or drain pipe in, for example, a short period of one month or less.
The effects of the present invention have been described above with reference to experiments performed by the present inventors.
Next, the specific example of the layout which installs the toilet bowl washing water production | generation apparatus of this embodiment is demonstrated.

FIG. 27 is a schematic view illustrating an installation aspect of a toilet flushing water generating apparatus that can be used in the present embodiment.
In this specific example, a toilet flushing water generating device 110 housed in, for example, a cubic housing is installed at the joint between the upper portion of the urinal 70 and the water supply pipe 50.
If it installs in such a place, the space which is not normally used can be utilized effectively, without providing an installation space newly.

FIG. 28 is a schematic view illustrating a second specific example of the installation mode of the toilet flushing water generating apparatus of this embodiment.
In this specific example, the toilet flushing water generator 110 is built in the upper part of the urinal 70. With such a structure, it can be installed without impairing the aesthetics and without being affected by external force or the like.

FIG. 29 is a schematic view illustrating a third specific example of the installation mode of the toilet flushing water generating apparatus according to this embodiment.
As shown in the figure, the toilet flushing water generating device 110 of this specific example is embedded in the wall surface behind the urinal 70 and is constructed so as not to be noticed by the public. A human body detection sensor 114 is provided on the panel 112 so that a user can be detected.

As mentioned above, although the specific example using this invention about the flush toilet bowl was demonstrated, this invention is not limited to these specific examples.
For example, the present invention can provide the same effect even if it is used to generate the wash water of the toilet 90. In this case, the present invention can be applied to both the flush valve type toilet 90 and the low tank type toilet 90.
In addition to toilet bowls, the present invention can provide the same sterilization effect with acidic water even when used in, for example, a hand-washing machine, kitchen rinsing, and bathroom rinsing.
In addition, the present invention also includes those in which the person skilled in the art appropriately changes the design of each element including the acidic water supply valve 60, the dissolving unit 35, the discharger 20, and the control unit 10 according to the toilet flushing water generator. As long as it has the gist of the present invention, it is included in the scope of the present invention.

It is a schematic diagram of the washing | cleaning system using the toilet bowl washing | cleaning water production | generation apparatus concerning embodiment of this invention. It is a flowchart which illustrates operation | movement of the washing | cleaning system concerning embodiment of this invention. It is the schematic which illustrates sectional drawing of the AA line of (a) discharger 20 and (b) discharger 20 of the washing water production | generation apparatus which concerns on this embodiment. It is a graph which illustrates transition of the NOx gas production amount with respect to the voltage in the reaction path length of the perpendicular direction to the main surface of a discharge reactor. It is a graph which illustrates transition of the NOx gas production amount with respect to the reaction path length of a discharge reactor. It is (a) sectional drawing which illustrates the area | region R containing the melt | dissolution part 35 of FIG. 1 mentioned above, (b) It is sectional drawing of an AA line. It is a flowchart which illustrates other washing modes which can be used for this embodiment. It is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing | cleaning water production | generation apparatus concerning the 2nd Example of this invention. It is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing water production | generation apparatus concerning the 3rd Example of this invention. It is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing water production | generation apparatus concerning the 4th Example of this invention. It is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing water production | generation apparatus concerning the 5th Example of this invention. It is a schematic diagram showing the principal part structure of the washing | cleaning system using the toilet bowl washing | cleaning water production | generation apparatus concerning the 6th Example of this invention. It is (a) sectional drawing which illustrates the 2nd example of the area | region R containing the melt | dissolution part 35 of FIG. 1 mentioned above, (b) It is sectional drawing of an AA line. It is the photograph which image | photographed the downstream of the melt | dissolution part 35 of FIG. 13 mentioned above with the high sensitivity camera. 2A is a cross-sectional view illustrating a first specific example of a gist structure including a melting portion 35 and a discharger 20 represented in the region R of FIG. 1 and FIG. 2B is a cross-sectional view taken along line A-A ′. It is the (a) front view and (b) sectional view of the AA line which illustrate the basic structure of the urinal 70 which can be used for this embodiment. It is (a) front view and (b) sectional view of the AA line which illustrate other basic structures of urinal 70 which can be used for this embodiment. It is the (a) front view, (b) top view, and (c) sectional view of the AA line which illustrates the location where urine stone is easy to be formed and accumulated in the toilet bowl 90. It is a schematic diagram which illustrates the relationship of the number of bacteria with respect to time which illustrates the reproduction | regeneration behavior of the bacteria of the day. It is a schematic diagram which illustrates the usage frequency data taken in the usage record learning mode. It is a schematic diagram which illustrates the experimental device which modeled the component of the toilet bowl washing water production | generation apparatus of this embodiment. FIG. 22 is a graph illustrating the pH behavior with respect to the reaction time illustrating Experiment 1 using the experimental apparatus described above. It is (a) external appearance photograph and (b) enlarged photograph of the area | region C which illustrate the time-lapse aspect when diluted urine water is statically left for 4 months. FIG. 25 shows (a) an appearance photograph and (b) an enlarged photograph of a region C, illustrating an example of a time-lapse state when acid water is immersed in the sample used in FIG. 24 and left statically for one month. It is a simple apparatus figure for immersing urine stone in acidic water. FIG. 26 is a graph illustrating the relationship between the pH of acidic water and the phosphate ion concentration using the experimental apparatus of FIG. 25 described above. It is the example which illustrated the installation place of the toilet bowl washing water production | generation apparatus which can be used for this embodiment. It is the 2nd specific example which illustrated the installation place of the washing | cleaning system which can be used for this embodiment. It is the 3rd specific example which illustrated the installation place of the washing system which can be used for this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Control means 20 Discharger 21 Anode 22 Cathode 23 Dielectric pellet 25 Check valve 31 Supply pipe 32 Nozzle part 33 O (O) ring 34 Gas nozzle 35 Dissolution part 36 Gas-liquid mixing part 37 Bubble dispersion body 38 High pressure source 39 Air layer 40 toilet flushing system 41 drive circuit 42 ultrasonic transducer 43 shower head 45 diversion means 50 water supply pipe 60 water supply valve 70 urinal 71 bowl 72 spreader 73 rim part 74 trap part 80 drain pipe 90 toilet bowl 91 recess part 100 water supply tank 106 Bubbler 110 Toilet wash water generator B1 Discharge channel B2 Drain channel D Location where urinary stones are likely to form and accumulate W Tap water

Claims (13)

An on-off valve that opens and closes the flow path of the wash water supplied to the flush toilet,
A discharger capable of generating discharge by applying a voltage between at least a pair of electrodes to generate nitric oxide gas;
A dissolving part that is provided in the flow path of the cleaning water and dissolves the nitrogen oxide gas generated by the discharger in the cleaning water;
A control unit capable of controlling the on-off valve and the discharger;
With
The said control part opens the said on-off valve, dissolves the said nitric oxide gas in the wash water which passes the said melt | dissolution part, and makes it discharge | emit from the said melt | dissolution part, The toilet bowl water generation apparatus characterized by the above-mentioned.   2. The toilet flushing water generating apparatus according to claim 1, wherein means for preventing the flushing water from flowing from the melting part to the discharger is provided between the discharger and the dissolving part.   The control unit is capable of executing a cleaning mode in which the nitrogen oxide gas is discharged from the dissolving unit without substantially dissolving the nitrogen oxide gas in the cleaning water passing through the dissolving unit by opening the on-off valve. The toilet flushing water generating apparatus according to claim 1 or 2. A diversion that is provided downstream of the on-off valve in the flow path of the wash water and selectively guides the wash water supplied via the on-off valve to either the first water channel or the second water channel. Further comprising
The dissolving portion is provided in the second water channel,
The control unit controls the on-off valve and the diversion unit to guide the washing water to the second water channel, thereby dissolving the nitric oxide gas in the washing water passing through the dissolving unit. The toilet flushing water generating device according to any one of claims 1 to 3, wherein the toilet flushing water generating device is discharged.   The toilet flushing water generating apparatus according to any one of claims 1 to 4, further comprising a pressurizing unit that pumps the nitrogen oxide gas to the dissolving unit. The dissolving part is
A first flow path for increasing the flow rate of the wash water;
A second flow path portion provided on the downstream side of the first flow path portion and having a larger cross-sectional area than the first flow path portion;
A gas inlet for introducing the nitrogen oxide gas into the second flow path portion;
The toilet flushing water generating device according to any one of claims 1 to 5, characterized by comprising: The dissolving part is
A bubble dispersion provided on at least a part of the peripheral side wall of the washing water flow path and having a plurality of openings;
A gas flow path for introducing the nitrogen oxide gas into the bubble dispersion;
The toilet flushing water generating device according to any one of claims 1 to 5, characterized by comprising: The discharger has a plurality of dielectric pellets filled between the pair of electrodes,
The toilet flushing water generating apparatus according to any one of claims 1 to 7, wherein when the voltage is applied between the pair of electrodes, the discharge is generated between the dielectric pellets. The control unit has a timer,
The toilet flushing water generating apparatus according to any one of claims 1 to 8, wherein the second washing mode is executed based on the measurement of the timer. The control unit has a counter for storing the number of times of use of the toilet bowl to which the toilet flushing water generating device is attached,
The toilet flushing water generating apparatus according to any one of claims 1 to 8, wherein the second washing mode is executed based on a value of the counter. The control unit learns the frequency of use of the toilet attached with the toilet flushing water generating device,
The toilet flushing water generating apparatus according to any one of claims 1 to 8, wherein the second washing mode is executed based on the learned use frequency. The toilet bowl washing water generating device according to any one of claims 1 to 11,
Flush toilet,
A toilet cleaning system characterized by comprising: The flush toilet has a spreader,
The toilet flushing system according to claim 12, wherein the washing water is discharged through the spreader.