JP2007321371A - Toilet bowl washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl washing device capable of efficiently using acid water. <P>SOLUTION: A control device prohibits that "washing water supply mode" for supplying washing water from a water supply pipe into a toilet bowl and "acid water supply mode" for supplying acid water generated by an acid water generating device into the toilet bowl are simultaneously performed, any one of the modes takes priority, and while the one mode is under execution, the other mode is prohibited. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a toilet bowl cleaning device, and more particularly to a toilet bowl cleaning device having a function of supplying acidic water.

  For flush toilets, manual washing by the user's button operation, etc., or when the human body sensor detects that a person has stood in front of the toilet and the use of the toilet is finished, washing of water or medium water etc. automatically Cleanliness is maintained by automatic washing with water. 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. May come out. 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. Thus, for example, Patent Document 1 discloses that free chlorine-containing water (acidic water) is allowed to flow through the toilet bowl in order to prevent precipitation of urine stones.

However, if the acidic water and the washing water flow at the same time, the acidic water is diluted by the washing water and the pH rises, so that the urinary stones cannot be removed or the effect of preventing urinary stone adhesion is reduced. In particular, toilets installed in large stations, high-rise buildings, etc. are frequently used, so there is a chance that the supply timing of cleaning water and the supply timing of acidic water will overlap. When generating acidic water, it consumes electric energy or chemicals, and therefore it is not preferable to flow it every time it is used like cleaning water. Therefore, it is desirable to efficiently flow acidic water in a smaller amount without reducing the urine stone removal effect in one supply of acidic water.
Japanese Patent No. 3031280

  The present invention provides a toilet bowl cleaning device that can efficiently use acidic water.

  According to one aspect of the present invention, a water supply channel connected to a supply source of cleaning water, a cleaning water supply channel for supplying the cleaning water into the toilet, a fluid inlet portion and a fluid outlet portion are provided. An acidic water generating device for generating urine-removable acidic water, a branch channel provided between the water supply channel and the fluid inlet, and the acidic water generating unit connected to the fluid outlet An acidic water supply flow path for supplying acidic water generated by the apparatus to at least one of the drain pipe connected to the inside of the toilet bowl and the downstream side of the drain outlet of the toilet bowl, and the wash water flowing through the water supply path A first state in which the toilet water is supplied into the toilet through the wash water supply channel, and a second state in which the wash water flowing through the water supply channel is supplied to the acidic water generating device through the branch channel. And switching means that can be switched between and the human body or washing water discharge request operation. The first detection means that performs, the second detection means that detects the supply timing of the acidic water, and the washing water supply mode is executed by switching to the first state based on the detection information of the first detection means. A control device capable of executing control and control for switching to the second state and executing the acidic water supply mode when detection information of the second detection means reaches a predetermined value, and The control device prohibits the washing water supply mode and the acidic water supply mode from being executed simultaneously, gives priority to one of the modes, and prohibits the other mode while the one mode is being executed. A toilet bowl cleaning device is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the toilet bowl washing | cleaning apparatus which can utilize acidic water efficiently is provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following description, cleaning for a urinal will be described, but the present invention can also be applied to cleaning of a urinal.
Moreover, the same code | symbol is attached | subjected to the same part in each drawing.

  FIG. 1 is a schematic view illustrating the configuration of a toilet bowl cleaning apparatus according to an embodiment of the invention.

  For example, a water supply pipe (water supply flow path) 3 through which tap water or the like is supplied is connected to the urinal 1 via a water supply valve 11 and a washing water supply flow path 5. The water supply pipe (water supply flow path) 3 and the cleaning water supply flow path 5 are configured by one pipe, for example. Further, the water supply pipe 3 is connected to the fluid inlet of the acidic water generator 15 via the branch flow path 7 upstream of the water supply valve 11. An on-off valve 13 is provided in the middle of the branch flow path 7. One end of the acidic water supply channel 9 is connected to the fluid outlet of the acidic water generator 15, and the other end of the acidic water supply channel 9 is downstream of the water supply valve 11 and is connected to the washing water supply channel 5. Have joined. In order to prevent the acidic water generated by the acidic water generator 15 from flowing back upstream, a backflow prevention means (such as a check valve) (not shown) (not shown) is provided in the fluid inlet of the acidic water generator 15 or in the middle of the branch flow path 7. Is provided.

  The water supply valve 11 and the on-off valve 13 are electromagnetic valves, for example, and each is automatically opened and closed in response to a signal from the control device 20. When the water supply valve 11 is opened and the on-off valve 13 is closed (first state), tap water or the like supplied from the water supply pipe 3 is used as cleaning water via the cleaning water supply channel 5 to the urinal 1. Supplied in. When the water supply valve 11 is closed and the on-off valve 13 is opened (second state), tap water or the like supplied from the water supply pipe 3 is supplied to the acidic water generator 15 via the branch flow path 7. . The water supply valve 11 and the on-off valve 13 function as switching means for switching between the first state and the second state. The acidic water generated by the acidic water generator 15 is supplied into the urinal 1 through the acidic water supply flow path 9.

  The first detection means 17 is a human body detection sensor such as an infrared sensor that detects a user standing in front of the urinal 1 in the case of the automatic cleaning type, and is used in the case of the manual cleaning type. Detects a water discharge request operation such as a button operation performed by a person.

  The second detection means 19 detects the supply timing of the acidic water to the urinal 1. For example, the second detection means 19 counts the number of times the urinal 1 is used (the number of times the cleaning water is supplied), and detects the acidic water supply timing when the number of uses reaches a predetermined value. Or the 2nd detection means 19 detects as supply timing of acidic water, when predetermined time or predetermined time passes. Or you may make it the 2nd detection means 19 detect the timing which supplies acid water statistically based on the usage frequency data of the urinal 1 of the past several days, for example.

  Alternatively, as the second detection means 19, a urine stone adhesion amount detection means as shown in FIG. 6 may be used. This urine stone adhering amount detection means is connected to the downstream side of the drainage outlet of the urinal 1 and penetrates the ceiling part of a so-called horizontal drainage pipe 30 disposed sideways so that one end faces the drainage pipe 30. It has an electrically conductive sensor 31 (for example, a metal wire or metal rod). A current source 32 is connected to the electrically conductive sensor 31. When the drain pipe 30 is made of a material having electrical conductivity, the drain pipe 30 and the electrically conductive sensor 31 are insulated and separated by, for example, interposing an insulating material in a through portion of the electrical conductive sensor 31. Keep it.

  In the horizontal drainage pipe 30, regardless of the amount of drainage flowing through the pipe, the bottom part of the drainage pipe is always in contact with the drainage, so that the urine stone 100 tends to be gradually deposited from the bottom part of the drainage pipe. . The urine stone 100 attached to the drain pipe bottom is set to the ground potential.

  As shown in FIG. 6A, when the amount of deposited urine stone 100 is small, the electrically conductive sensor 31 does not contact the urolith 100.

  As shown in FIG. 6B, when the amount of deposited urine stone 100 increases and the electrically conductive sensor 31 contacts the urine stone 100, the urine stone 100 has electrical conductivity. A current flows through a circuit formed by the electrically conductive sensor 31 and the urine stone 100, and this current detection can be used as the supply timing of the acidic water for removing the urine stone.

  Next, FIGS. 2 to 5 show specific examples of the acidic water generator.

  In the acidic water generating apparatus shown in FIG. 2, nitrogen oxide gas mainly composed of nitrogen oxides generated by decomposing air with the discharger 23 is introduced into the water storage unit 25 to generate acidic water.

  Water introduced through the branch flow path 7 is stored in the water storage unit 25. In addition, a pump P capable of circulating the gas present in the water storage unit 25 inside and outside the system is provided. When the nitric oxide gas generated by the discharger 23 is dissolved in the water in the water storage unit 25, acidic water such as an aqueous nitric acid solution is generated. The acidic water supply channel 9 is connected to the bottom of the water storage unit 25 via an on-off valve 36, and the acidic water generated in the water storage unit 25 is converted into the acidic water supply channel 9 by opening the on-off valve 36. Can be supplied to.

  In the acidic water generating apparatus shown in FIG. 3, air pressurized by the pressurizing unit 27 is supplied to the discharger 23 to generate nitrogen oxide gas, and this gas is ejected from the ejection unit (small hole). A swirl flow is formed and then introduced into the water reservoir 25. With such a configuration, the efficiency of dissolving nitrogen oxide gas in water is improved, and acidic water having a higher concentration can be generated.

  4 includes an electrolytic cell 50 having an anode 51 and a cathode 52 therein. In the specific example shown in FIG. 4, the cleaning water supply flow path 5 and the branch flow path 7 are connected to the water supply pipe 3 instead of providing the water supply valve 11 and the on-off valve 13 shown in FIG. 1. A three-way valve 39 is provided in the part. The three-way valve 39 communicates the water supply pipe 3 and the cleaning water supply flow path 5 and shuts off the water supply pipe 3 and the branch flow path 7 (first state), and the water supply pipe 3 and the branch flow path 7. Can be switched to a state (second state) in which the water supply pipe 3 and the cleaning water supply flow path 5 are shut off.

When a DC voltage is applied between the anode 51 and the cathode 52 in a state where water is supplied into the electrolytic cell 50 through the branch flow path 7 and the water is stored therein, the anode 51 is ionized due to water ionization. H ⁺ concentration increases at the interface between water and water, and H ⁺ -rich acidic water is generated on the anode 51 side, and OH ⁻ concentration increases at the interface between the cathode 52 and water, and OH ⁻ rich on the cathode 52 side. Of alkaline water is produced. In the electrolytic cell 50, the anode 51 and the cathode 52 are partitioned by a diaphragm 53 so that the acidic water generated on the anode 51 side and the alkaline water generated on the cathode 52 side do not mix. .

  Acidic water is supplied to the acidic water supply channel 9 from an acidic water outlet provided at the bottom of the electrolytic cell 50. Alkaline water is supplied from an alkaline water outlet provided at the bottom of the electrolytic cell 50 to the alkaline water storage section 54 via a flow path 46 partitioned from the acidic water supply flow path 9 by a valve 41. In addition, by opening the valve 41 and mixing the alkaline water stored in the alkaline water storage section 54 with the acidic water flowing through the acidic water supply flow path 9, the drainage is reduced to a desired pH, for example, to meet the environmental standards. can do.

  In the acidic water generator shown in FIG. 5, for example, an acidic water is generated by adding a chemical such as an organic acid or an inorganic acid to the water in the water storage unit 55.

  The acidic water generating device is not limited to the above-described one, and any acidic water generating method and device configuration are not particularly limited as long as it has a function of generating acidic water from which urine stones can be removed. In this way, when generating acidic water with an acidic water generator, the apparatus becomes large in order to generate a large amount of acidic water. Therefore, urine is generated with the minimum amount of acidic water necessary to make the structure as compact as possible. Having a stone removal effect is a very important issue.

  Referring again to FIG. 1, the control device 20 opens the water supply valve 11 based on the detection information of the first detection means 17 and supplies the cleaning water to the urinal 1 “washing water supply mode” (At this time, the on-off valve 13 is closed), and when the detection information of the second detection means 19 reaches a predetermined value, the on-off valve 13 is opened and water is supplied to the acidic water generator 15. Water supply mode "(at this time, the water supply valve 11 is closed) can be executed.

  In the “washing water supply mode”, the first detection means 17 detects that the urinal 1 has been used, for example, based on a human body detection signal from a human body sensor, and the urinal 1 receives washing water from the water supply pipe 3. Is supplied and washing with water is performed. Alternatively, the user who uses the urinal 1 may operate the valve, the button, or the like to cause the flush water to flow through the urinal 1.

  In the “acidic water supply mode”, water is supplied from the water supply pipe 3 to the acidic water generator 15, and the acidic water generator 15 generates acidic water as described above, and the generated acidic water is used as a urinal. 1 is supplied. Thereby, the urine stone which has already been formed and accumulated can be dissolved and removed while preventing the formation of urine stone in the urinal 1 or the drain pipe connected to the downstream side of the drain port. If the pH of the acidic water is “6” or less, more desirably “4” or less, the effect of dissolving and removing urine can be further enhanced.

  The control device 20 prohibits the “washing water supply mode” and the “acidic water supply mode” from being executed at the same time. Priority is given and the other mode is prohibited while this one mode is being executed.

  Hereinafter, specific execution examples of the “washing water supply mode” and the “acidic water supply mode” will be described with reference to FIGS.

  FIG. 7 shows a first specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, supply of washing water, and supply of acidic water.

  The toilet use detection operation by the first detection unit 17 and the acidic water supply detection operation by the second detection unit 19 occur simultaneously, and the “washing water supply mode” and the “acidic water supply mode” are executed simultaneously. When such an opportunity occurs, the control device 20 prioritizes the “acidic water supply mode”, first executes the “acidic water supply mode”, and after the “acidic water supply mode” ends, a predetermined time t1 After the elapse of time, the “washing water supply mode” is executed.

  By prohibiting the “washing water supply mode” and the “acidic water supply mode” from being performed at the same time, it is possible to prevent the washing water and the acidic water from flowing simultaneously and diluting the acidic water with the washing water. Thereby, it can suppress that acidic water raises more than desired pH, and can prevent the fall of the dissolution removal effect of a urine stone. By increasing the urinary stone removal effect per acidic water supply, it is possible to efficiently dissolve and remove urinary stones with fewer times without wastefully increasing the number of times the acidic water flows, resulting in the generation of acidic water. In this case, energy and chemicals can be saved and costs can be reduced.

  In addition, if the wash water is run immediately after the acid water is passed, the wash water joins the acid water at the drain pipe (so-called horizontal drainage pipe) connected downstream of the toilet drain, Since water may be diluted, in this specific example, the washing water is allowed to flow after the lapse of a predetermined time t1 (after the acidic water has completely flowed) after the supply of the acidic water is completed. Thereby, it can prevent reliably that acidic water is diluted by the confluence | merging with wash water. In particular, acidic water is used for the purpose of extending the contact time with urine stone, and since it is preferable to reduce the flow rate and flow rate compared with washing water in order to bring a small amount of acidic water into contact with urine stone, it was poured first. In order to prevent the wash water that has flowed into the acidic water from catching up later, it is important to prohibit or wait for a predetermined time after the acidic water discharge to discharge the wash water. It should be noted that the predetermined time t1 is the flow of the wash water after the acid water has flowed, the wash water that the acid water previously flowed in the horizontal pipe on the downstream side of the urinal flowed later in the horizontal pipe It refers to the time interval that is not enough to join.

  In addition, when the detection operation by the first detection unit 17 and the detection operation by the second detection unit 19 occur at the same time, only the “acid water supply mode” is prioritized and the “washing water supply mode” It may not be performed. That is, the wash water may not flow when using the toilet bowl this time, and the wash water may flow when the next use does not overlap with the supply timing of the acidic water.

  FIG. 8 shows a second specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, cleaning water supply, and acidic water supply.

  If an execution command for the “acid water supply mode” is issued based on the detection of the second detection means 19 during the execution of the “washing water supply mode”, the execution of the “acid water supply mode” is waited for, After the “washing water supply mode” is completed, the “acidic water supply mode” is executed after a predetermined time t2. In addition, the predetermined time t2 shown here has a shorter interval than the above-described t1, and may be immediately after the discharge of the washing water. However, when the flow rate / flow rate of the acidic water is higher than that of the washing water, it is necessary to leave a time interval so that the acidic water that has flowed later cannot catch up with the washing water that has flowed first.

  Therefore, also in this specific example, it is prohibited to execute the “washing water supply mode” and the “acidic water supply mode” at the same time, and the washing water and the acidic water flow at the same time so that the acidic water is diluted with the washing water. Can be prevented. Thereby, it can suppress that acidic water raises more than desired pH, and can prevent the fall of the dissolution removal effect of a urine stone.

  In general, the flow rate and flow rate of washing water are larger than that of acidic water, and it is less likely that acidic water will join the washing water that has flowed earlier. The “acid water supply mode” may be started.

  In particular, the horizontal drainage pipe tends to deposit and deposit urine on the bottom side of the inner wall surface, so even if a large amount of acidic water is flowed, contact with the bottom side of the inner wall surface of the horizontal drainage pipe becomes insufficient. May get worse. Accordingly, the acidic water can be used for removing urinary stones efficiently without waste by setting the flow rate and flow rate to be smaller than that of the washing water, that is, by slowly flowing a small amount of acidic water.

  FIG. 9 shows a third specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, cleaning water supply, and acidic water supply.

  When the first detection means 17 detects the use of the toilet and issues an instruction to execute the “washing water supply mode” during the execution of the “acid water supply mode”, the execution of the “washing water supply mode” is made to wait. Then, after the “acid water supply mode” is completed, the “washing water supply mode” is executed after the elapse of a predetermined time t1.

  Therefore, also in this specific example, it is prohibited to execute the “washing water supply mode” and the “acidic water supply mode” at the same time, and the washing water and the acidic water flow at the same time so that the acidic water is diluted with the washing water. Can be prevented. Thereby, it can suppress that acidic water raises more than desired pH, and can prevent the fall of the dissolution removal effect of a urine stone. In addition, since the cleaning water is allowed to flow after the predetermined time t1 has elapsed after the supply of the acidic water, the acidic water can be reliably prevented from being diluted by the merge with the cleaning water.

  FIG. 10 shows a fourth specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, supply of washing water, and supply of acidic water.

  When the toilet is used by the first detection means 17 during execution of the “acid water supply mode” and an execution command for the “wash water supply mode” is issued, the “acid water supply mode” is once interrupted. Then, the “washing water supply mode” is executed after the elapse of the predetermined time t1. Then, after the “washing water supply mode” is completed, the “acidic water supply mode” is executed again after the elapse of a predetermined time t3 (same as t2 described above).

  The urinary stone is loosened by the supply of acidic water before the interruption, and this washing is performed by flowing washing water at a flow rate and flow rate larger than that of acidic water against the urinary stone that has been easily removed. Urine stone can be physically removed by the impact force of water. Then, by flowing the acidic water again after supplying the washing water, the urine stone can be dissolved and removed using the dissolving action of the acidic water. Further, since the toilet water flows when the use is finished, the toilet user can recognize that the apparatus is not broken down, and is immediately washed away with the cleaning water, which is preferable.

  Also in this specific example, it is prohibited to execute the “washing water supply mode” and the “acidic water supply mode” at the same time, and the washing water and the acidic water flow at the same time so that the acidic water is diluted with the washing water. Can be prevented. Thereby, it can suppress that acidic water raises more than desired pH, and can prevent the fall of the dissolution removal effect of a urine stone.

  FIG. 11 shows a fifth specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, cleaning water supply, and acidic water supply.

  In this specific example, if an execution command for the “cleaning water supply mode” is issued while the “acid water supply mode” is being executed, the execution command for the “washing water supply mode” is canceled and the supply of cleaning water is prohibited. . Therefore, also in this specific example, it is prohibited to execute the “washing water supply mode” and the “acidic water supply mode” at the same time, and the washing water and the acidic water flow at the same time so that the acidic water is diluted with the washing water. Can be prevented. Thereby, it can suppress that acidic water raises more than desired pH, and can prevent the fall of the dissolution removal effect of a urine stone.

  FIG. 12 shows a sixth specific example of the “acidic water supply mode”.

  In this specific example, acidic water is intermittently supplied by intermittently opening and closing the on-off valve 13 shown in FIG. After the detection by the second detection means 19, the acidic water is allowed to flow intermittently, for example, in three times. For example, as the first time, the second time, and the third time, the time for flowing the acidic water is lengthened. The purpose of the acidic water flowing for a short time is to loosen the binding of uric stones rather than to dissolve and remove urinary stones, and to promote the dissolving action of urinary stones by the flowing acidic water. Moreover, the physical impact force with respect to a urine stone becomes large by flowing acidic water intermittently.

Moreover, when flowing acidic water into multiple times, you may change the flow volume of acidic water for every time.
FIG. 22 shows a seventh specific example of the “acidic water supply mode”.

  In this specific example, for example, the acidic water is intermittently flown in two times, and the flow rate of the acidic water to be flown in the second time is made larger than that in the first time. First, slowly flow a small amount of acidic water to loosen the binding of uric stones, then flow a large flow of acidic water to remove urinary stones by the physical impact of the water flow.

  The "acidic water supply mode" as exemplified in the sixth specific example and the seventh specific example is the "acidic water supply mode" in other specific examples other than the sixth specific example and the seventh specific example. Applicable.

  FIG. 13 shows an eighth specific example of a timing chart of operations of the detection by the first detection unit 17, the detection by the second detection unit 19, the cleaning water supply, and the acidic water supply.

  In this specific example, even if the use of the toilet bowl is not detected by the first detection means 17, after the end of the “acid water supply mode”, a predetermined time t4 (same as t1 described above) has passed (acid water flows). The “washing water supply mode” is automatically executed after the completion. Further, the flow rate and flow rate of the washing water in the “washing water supply mode” are larger than those in the normal “washing water supply mode” at the time of toilet cleaning. That is, the “washing water supply mode” in this specific example is not intended to wash the toilet after using the toilet, but is used to remove urinary stones using the momentum (impact force) of the water flow.

  In executing the “washing water supply mode” in this specific example, not only the water supply valve 11 in FIG. 1 but also the on-off valve 13 may be opened to supply water to the urinal 1. In this case, the generation of acidic water in the acidic water generator 15 is stopped. If the acidic water generator 15 has, for example, an electrolytic cell, acidic water is not generated unless a voltage is applied between the electrodes.

  FIG. 14 shows a ninth specific example of a timing chart of operations of detection by the first detection unit 17, detection by the second detection unit 19, supply of cleaning water, and supply of acidic water.

  In this specific example, the “cleaning water supply mode” has two stages of “pre-cleaning” and “post-cleaning”. In “pre-washing”, the first detection means 17 detects the user in front of the urinal 1, so that washing water flows through the urinal 1 before the user uses the urinal 1. When the first detection means 17 detects that the user has left the urinal 1 after using it, flush water is passed through the urinal 1.

  In this specific example, when an execution command for the “acidic water supply mode” is issued based on the detection of the second detection means 19 during “pre-cleaning”, the execution of the “acidic water supply mode” is made to wait. Then, after the “post-cleaning” is completed, the “acid water supply mode” is executed after a predetermined time has elapsed or immediately after the “post-cleaning” is completed.

  Therefore, also in this specific example, it is prohibited to execute the “washing water supply mode” and the “acidic water supply mode” at the same time, and the washing water and the acidic water flow at the same time so that the acidic water is diluted with the washing water. Can be prevented.

  FIG. 15 shows a tenth specific example of a timing chart of operations of detection by the first detection means 17, detection by the second detection means 19, washing water supply, and acidic water supply.

  In this specific example, even if there is no detection of toilet use by the first detection means 17 during the “acid water supply mode”, the predetermined time t5 (same as t1 described above) after the “acid water supply mode” ends. Execution of “wash water supply mode” is prohibited. That is, after the end of the “acid water supply mode”, the wash water is not supplied to the acid water so that the wash water does not flow for a predetermined time t5 even if the first detection means 17 detects the use of the toilet bowl. It joins to prevent acid water from being diluted.

  FIG. 16 shows an eleventh specific example of a timing chart of operations of detection by the first detection means 17, detection by the second detection means 19, washing water supply, and acidic water supply.

  In order to save water at high usage frequency (for example, when the number of users per day is detected to be 200 or more), for example, once every 5 uses, without flushing water after every use. In this case, when the supply timing of the acidic water overlaps the supply timing of the cleaning water, the cleaning water supply command is canceled (without flowing the cleaning water), and the supply of the acidic water is prioritized. In addition, when the usage frequency is high, the number of times of supplying acidic water per day may be increased.

  Next, the test of the urine stone removal effect by acidic water will be described.

In this test, as shown in FIG. 17, 6 milliliters of acidic water and 1 gram of urine collected from actual buildings (A building and B building) are put in a test tube 57, and the acidic water is collected for 6 hours. The amount of ions (PO ₄ ³⁻ ) of the urine stone component dissolved in the solution was measured. The pH of the acidic water was varied.

FIG. 18 is a graph showing the test results and showing that urine dissolution in acidic water has pH dependence. The horizontal axis represents the pH of acidic water, and the vertical axis represents the amount of PO ₄ ^3- ion (ppm) eluted from 1 gram of urine.

  Based on the graph of FIG. 18, when acid water with pH = 5 was flowed, it was calculated as follows how many parts of the urine stone components were dissolved.

The amount of increase in phosphoric acid due to dissolution of acidic water at pH = 5 is 33 ppm (graph value of pH = 5) −23 ppm (graph value of pH = 7) = 10 ppm.
The amount of urine-derived phosphoric acid that is not bound and is contained in urine and dissolved in water corresponds to 23 ppm. The amount dissolved from what is bound calcium phosphate is 33 ppm-23 ppm = 10 ppm.
The phosphoric acid weight in 6 ml is 10 ppm × 6 ml = 60 micrograms (1).
From the analysis results, the mineral content of 1 gram of urine stone is 0.05 gram (5%).
Assuming that the inorganic component is calcium phosphate Ca ₃ (PO ₄ ) ₂ , the phosphate ratio of 1 gram of urine is 0.05 grams × 190/310 = 30.7 milligrams.
Equation (1) corresponds to about 0.2% of 30 milligrams.

  From this result, 0.2% is dissolved in 6 hours, and 100% is dissolved and removed on the 125th day in calculation. Actually, after the person uses the urinal, the washing water is made to flow, so that the action of pushing the urine stone downstream by the force of the water flow is added. Since part of the urinary stone tissue is dissolved by the acid water, it becomes easy to break, and the probability of flowing away downstream by the water flow increases. By combining the effects and optimizing the timing of supplying acidic water, it is expected that 100% of urine stones can be removed in a short period of time within one month. Moreover, since it turns out that the urine stone removal effect reduces, so that pH rises, the meaning of prohibiting that acidic water is diluted with the washing water of this invention and pH rises is clear.

  Next, FIG. 19 is a schematic view illustrating the configuration of a toilet bowl cleaning device according to another embodiment of the invention.

  In the present embodiment, the acidic water supply channel 45 connected to the fluid outlet of the acidic water generator 15 is connected to the drain pipe 30 connected to the downstream side of the drain port of the urinal 1, When the “supply mode” is executed, the acid water is directly supplied to the drain pipe 30. Of course, the acidic water supply channel may be connected to both the urinal 1 and the drain pipe 30 so that acidic water is supplied to both of them.

  FIG. 20 is a schematic view illustrating the configuration of a toilet bowl cleaning device according to still another embodiment of the invention.

  In the present embodiment, a three-way valve 39 is provided at a portion where the water supply pipe 3 branches into the cleaning water supply channel 5 and the branch channel 7. When the “washing water supply mode” is executed, the three-way valve 39 causes the water supply pipe 3 and the wash water supply flow path 5 to communicate with each other and blocks the water supply pipe 3 from the branch flow path 7. Thereby, washing water is supplied to the urinal 1 and acidic water is not supplied. When the “acidic water supply mode” is executed, the three-way valve 39 allows the water supply pipe 3 and the branch flow path 7 to communicate with each other and blocks the water supply pipe 3 and the wash water supply flow path 5. Thereby, only the acidic water is supplied to the urinal 1 without supplying the cleaning water. Further, in order to create a state in which neither acid water nor washing water flows, an opening / closing valve is provided upstream of the three-way valve 39 of the water supply pipe 3, and the opening / closing valve is opened only when supplying acidic water or washing water.

  FIG. 21 is a schematic view illustrating the configuration of a toilet bowl cleaning device according to still another embodiment of the invention.

  In the present embodiment, a flow rate adjustment valve 43 is provided in the acidic water supply channel 9. By adjusting the opening degree of the flow rate adjustment valve 43 by the control device 20, the supply flow rate of acidic water to the urinal 1 can be adjusted. For example, as in the seventh specific example described above with reference to FIG. 22, by increasing the flow rate of acidic water, it is possible to cope with urine stone removal utilizing the impact force of the water flow.

  Next, FIG. 23 shows a case where a plurality of urinals (for example, three in the illustrated example but not limited to this) 1a to 1c are connected to a common drain pipe (so-called horizontal drain pipe) 58. It is a schematic diagram which illustrates the structure of a toilet bowl washing | cleaning apparatus.

  For example, a water supply pipe (water supply channel) 3 to which tap water or the like is supplied is connected to the urinals 1a, 1b, and 1c via washing water supply channels 64a, 64b, and 64c. Water supply valves 61a, 61b, and 61c are provided in the middle of the respective cleaning water supply channels 64a, 64b, and 64c.

  Further, the water supply pipe 3 is connected to the fluid inlet of the acidic water generating device 15 through the branch flow channel 66 upstream of the water supply valves 61a, 61b, 61c. An on-off valve 63 is provided in the middle of the branch flow path 66. The fluid outlet of the acidic water generator 15 is connected to the urinals 1a, 1b, and 1c via the acidic water supply channels 68a, 68b, and 68c. On-off valves 62a, 62b, and 62c are provided in the middle of the acidic water supply channels 68a, 68b, and 68c, respectively. In addition, a backflow prevention means (for example, a check valve) (not shown) is provided in the fluid inlet portion of the acidic water generator 15 or in the middle of the branch flow path 66 so that the acidic water generated by the acidic water generator 15 does not flow back upstream. ) Is provided.

  The water supply valves 61 a to 61 c and the on-off valves 63 and 62 a to 62 c are electromagnetic valves that are opened and closed based on the control of the control device 20.

  Moreover, the 1st detection means 17a, 17b, 17c which detects each use of the urinal 1a, 1b, 1c is provided. Furthermore, the 2nd detection means 19a, 19b, 19c which detects the supply timing of the acidic water to each of the urinals 1a, 1b, 1c is provided. The second detection means is not necessarily provided individually corresponding to each urinal, and only one common to each urinal may be provided.

  In the case of the automatic cleaning type, the first detection means 17a, 17b, and 17c are human body detection sensors such as an infrared sensor that detect a user standing in front of the urinals 1a, 1b, and 1c. In the case of a formula, for example, a washing water discharge request operation such as a button operation performed by the user is detected.

  The second detection means 19a, 19b, 19c, for example, counts the number of times the urinals 1a, 1b, 1c are used (the number of times the cleaning water is supplied), and supplies the acidic water when the number of times of use reaches a predetermined value. Detect as timing. The total number of use of a plurality of urinals may have reached a predetermined value, or when at least one urinal out of a plurality of urinals has reached a predetermined number of uses, The “acidic water supply mode” may be set. Or the 2nd detection means 19a, 19b, 19c detects as supply timing of acidic water, when predetermined time or predetermined time passes. Or you may make it the 2nd detection means 19a, 19b, 19c detect the timing which supplies acid water statistically based on the usage frequency data of the urinals 1a, 1b, 1c for the past several days, for example. .

  A drain outlet provided at the bottom of the urinal 1a is connected to the upstream side of a horizontal drainage pipe 58 disposed slightly inclined downward toward the downstream side through a vertical pipe 34a (including a sealing portion). Has been. A drain outlet provided at the bottom of the urinal 1b is connected to the horizontal drainage pipe 58 via the vertical pipe 34b on the downstream side of the urinal 1a. A drain outlet provided at the bottom of the urinal 1c is connected to the horizontal drainage pipe 58 via the vertical pipe 34c on the downstream side of the urinal 1b.

  When the on-off valve 63 is opened, tap water or the like from the water supply pipe 3 is supplied to the acidic water generator 15 via the branch channel 66. For example, the acidic water generator 15 generates acidic water such as an aqueous nitric acid solution by dissolving nitrogen oxide gas mainly composed of nitrogen oxides generated by decomposing air with a discharger in water in the water storage unit. Or the acidic water production | generation apparatus 15 may produce | generate acidic water using the electrolysis of water, and also produces | generates acidic water by adding chemical | medical agents, such as an organic acid and an inorganic acid, to water. But you can. That is, the acidic water generating device 15 only needs to have a function of generating acidic water from which urine stones can be removed, and the acidic water generating method and device configuration are not particularly limited.

  The acidic water generated by the acidic water generator 15 is supplied into the urinal 1a via the acidic water supply flow path 68a when the on-off valve 62a is opened.

  Based on the detection information of the first detection means 17a to 17c, the control device 20 opens the corresponding water supply valves 61a to 61c, and supplies the cleaning water to the urinals 1a to 1c. When the detection information of each of the “supply mode” and the second detection means 19a to 19c reaches a predetermined value, the on / off valve 63 and the corresponding on / off valves 62a to 62c are opened, and the urinals 1a to 1c are opened. It is possible to execute “acid water supply mode” for supplying acid water to the water.

  In the “washing water supply mode”, as the first detection means 17a to 17c, for example, the first detection means 17a is detected by detecting that the urinals 1a to 1c are used by a human body detection signal from a human body sensor. Wash water is supplied from the water supply pipe 3 to the urinals 1a to 1c corresponding to ˜17c, and washing with water is performed. Alternatively, the user who uses the urinals 1a to 1c may operate the valve, the button, or the like to cause the washing water to flow through the urinals 1a to 1c corresponding to the first detection units 17a to 17c.

  In the “acidic water supply mode”, the on-off valve 63 and the on-off valves 62a to 62c are opened to supply water to the acidic water generator 15 from the water supply pipe 3, and the acidic water generated by the acidic water generator 15 is The urinals 1a to 1c are supplied via the acidic water supply channels 68a to 68c. As a result, the urine stones already formed and accumulated while preventing the formation of urine stones in the urinals 1a to 1c, the drain pipes 34a to 34c connected to the downstream side of the drainage port, and the horizontal drainage pipe 58. Can be dissolved and removed.

  Next, FIG. 24 shows a portion 58a between the connecting portion of the urinal 1a and the connecting portion of the urinal 1b, and the connecting portion of the urinal 1b and the connecting portion of the urinal 1c in the horizontal drainage pipe 58. It is the figure which represented typically the adhesion degree of the urine stone in each of the part 58b of this, and the part 58c downstream from the connection part of the urinal 1c.

  Urine stone adheres most to the portion 58c through which drainage from all the urinals 1a to 1c passes. Since only the waste water from the urinal 1a flows in the portion 58a, the amount of urine stone attached is small, and the deposit is locally deposited on the bottom of the drain pipe. Since the waste water from the urinal 1a and the urinal 1b passes through the portion 58b, the amount of deposited urine is larger than that in the portion 58a. When drainage from the urinal 1a and urinal 1b flows to the portion 58b at the same time, the draft surface (water level) in the drainpipe after the merging of the drainage becomes high, so urine stones also adhere to the upper side of the inner wall of the drainpipe. In the most downstream portion 58c, an increase in the amount of deposited urine stones on the entire inner wall surface of the drain pipe becomes remarkable.

  In order to remove urine stones attached to the entire circumference of the portion 58c, it is necessary to flow a large amount of acidic water through the portion 58a. Therefore, in the present embodiment, when the “acidic water supply mode” is executed, the control device 20 causes the horizontal drainage from the acidic water supply channels 68a to 68c via the urinals 1a to 1c and the pipes 34a to 34c. Acidic water is supplied at a timing such that the acidic water that has flowed into the pipe 58 joins in the drain pipe 58. For example, as illustrated in FIG. 25, when any of the second detection units 19 a to 19 c detects the acidic water supply timing of any of the urinals 1 a to 1 c, the control device 20 causes all the urinals 1 a to 1 c to be detected. At the same time, start supplying acidic water.

And the timing which stops supply of acidic water is made so that the urinal connected to the downstream of the horizontal drainage pipe 58 becomes late.
When the acidic water flowing in the urinal 1a reaches the portion 58b, the acidic water flowing in the urinal 1b flows in the portion 58b, and the acidic water flowing in both the urinals 1a and 1b is in the portion 58b. The stop timing of the urinal 1b is set so as to be delayed with respect to the acidic water stop timing of the urinal 1a so as to be able to join.
When the acidic water merged in the portion 58b reaches the portion 58c, the acidic water flowing in the urinal 1c is flowing in the portion 58c, and the acidic water flowing in all the urinals 1a to 1c is in the portion 58c. The stop timing of the urinal 1c is set with a delay with respect to the acidic water stop timing of the urinal 1b so that they can merge.

  As a result, the draft surface (water level) of the acidic water can be made higher as it becomes downstream of the horizontal drainage pipe 58 from the part 58a to the part 58b and from the part 58b to the part 58c, and urine stone adheres and accumulates. It is possible to dissolve and remove urinary stone that adheres and accumulates on the entire inner wall surface of the inner wall surface while preventing adhesion and accumulation of urine stones on the entire inner wall surface in the downstream side portion of the horizontal drainage pipe 58 that tends to increase in volume.

  In addition, when the above “acidic water supply mode” is executed, the acidic water is not limited to flow in all the urinals 1a to 1c, but acidic water is allowed to flow in at least two of the urinals 1a to 1c. If the acidic water joins in the horizontal drainage pipe 58, the level of the acidic water on the downstream side of the horizontal drainage pipe can be increased.

  Moreover, like the other specific example shown in FIG. 26, it connects with the upstream of the horizontal drainage pipe 58 so that the acidic water which flowed through each urinal 1a-1c merges in the downstream side part of the horizontal drainage pipe 58 The execution of the “acidic water supply mode” may be started by shifting the time from the urinals in order. That is, the urinal connected to the downstream side of the horizontal drainage pipe 58 starts to flow acidic water later than the urinal connected to the upstream side, and the urinal of the downstream side has a stop timing of acidic water. Delayed. The acidic water that flows in the urinal 1a and the acidic water that flows in the urinal 1b merge at the portion 58b, and the acidic water that flows in all the urinals 1a to 1c merges at the portion 58c. Moreover, the acidic water supply start timing and stop timing of each urinal 1a-1c are set appropriately. Also in this specific example, the draft surface (water level) of the acidic water in the downstream side portion of the horizontal drainage pipe 58 can be made high, while preventing the deposition of urinary stones on the entire inner wall surface of that portion, It is possible to dissolve and remove urinary stones deposited and deposited on the entire wall surface.

  Furthermore, in this specific example, since the supply start timing of acidic water is delayed for the downstream urinal, the amount of acidic water that has passed through the urinal 1b flowing through the portion 58b before the acidic water on the upstream side merges, and The amount of acidic water that has passed through the urinal 1c flowing through the portion 58c can be reduced as much as possible, and urinary stones can be efficiently removed with a smaller amount of acidic water.

  In addition, when the urinals 1a to 1c are in the "acid water supply mode" and any of the urinals 1a to 1c is in the "wash water supply mode", the acidic water is washed particularly in the portions 58b and 58c. Since it is diluted with water, the action of dissolving urine on the downstream side of the drain pipe is reduced, and acid water cannot be used efficiently, which is useless.

Therefore, when the urinals 1a to 1c enter the "acidic water supply mode", the execution of the "washing water supply mode" for all of the urinals 1a to 1c is prohibited.
FIG. 27 shows a specific example of a timing chart of each operation in that case.

For example, when the detection of the first detection means 17a that detects use of the urinal 1a and the detection of any one of the second detection means 19a to 19c occur simultaneously, the “of the urinals 1a to 1c” Prioritizing the “acid water supply mode”, the “acid water supply mode” as shown in FIG. 25 or FIG. 26 is executed. After the end of the “acid water supply mode” (after the end of the acid water supply mode of the urinal 1c on the most downstream side with the latest acid water stop timing), after the elapse of a predetermined time t1, the “wash water supply” of the urinal 1a "Mode" is executed and flush water is poured into the urinal 1a. It is possible to reliably prevent the merging of the acidic water and the washing water by flowing the washing water after the predetermined time t1 has passed without flowing the washing water immediately after the end of the “acid water supply mode”. In particular, acidic water is used for the purpose of extending the contact time with urinary stones, and since it is preferable to reduce the flow rate and flow rate compared to washing water in order to bring a small amount of acidic water into contact with urinary stones, In order to prevent the wash water that has flowed into the water from catching up later, it is important to prohibit or wait for the wash water to be discharged for a predetermined time after the acid water discharge.
Further, when the first detection means 17b detects the use of the urinal 1b during the execution of the “acidic water supply mode” of the urinals 1a to 1c, after the end of the “acidic water supply mode” (acidic water supply mode) After the end of the acidic water supply mode of the urinal 1c on the most downstream side with the latest stop timing), after the elapse of a predetermined time t1, the “washing water supply mode” of the urinal 1b is executed to flow wash water to the urinal 1b. By doing so, it is possible to prevent acid water from being diluted by mixing acid water and washing water on the downstream side of the drain pipe 58. As a result, it is possible to prevent the acidic water from rising above the desired pH, and to prevent the urine stone dissolution and removal effect from decreasing.

  FIG. 28 shows still another specific example of each operation timing chart in the case where simultaneous execution of the “acidic water supply mode” of the urinals 1a to 1c and the “washing water supply mode” of the urinals 1a to 1c is prohibited. To express.

  In this specific example, during the execution of the “washing water supply mode” of the urinal 1a by the detection of the first detection means 17a, the acidic water supply to the urinals 1a to 1c by any of the second detection means 19a to 19c. When the timing is detected, the "acid water supply mode" of the urinals 1a to 1c is executed after a predetermined time from the end of the "wash water supply mode" of the urinal 1a or immediately after the end of the "wash water supply mode". . When the first detection means 17c detects the use of the urinal 1c during execution of the “acidic water supply mode” of the urinals 1a to 1c, the “acidic water supply mode” of the urinals 1a to 1c After the end (after the end of the acidic water supply mode of the urinal 1c on the most downstream side with the latest acidic water stop timing), the “washing water supply mode” of the urinal 1c is executed after the elapse of a predetermined time t1. Also in this specific example, it is possible to prevent the acidic water from being diluted by mixing the acidic water and the washing water on the downstream side of the drain pipe 58.

  The acidic water is not limited to being supplied into the urinals 1a to 1c. For example, as shown in FIG. 29, each acidic water supply flow channel 71a to 71c is connected to each urinal 1a to 1c in the horizontal drainage pipe 58 (each drain port of each urinal 1a to 1c). In the vicinity of each of the pipes 34a to 34c connected to the pipe, acid water may be supplied to that portion. Even in this case, it is possible to increase the amount of acidic water flowing on the downstream side of the horizontal drainage pipe 58 by flowing the acidic water through the acidic water supply channels 71a to 71c at the timing as described above.

  Alternatively, as shown in FIG. 30, the acidic water supply channels 72a to 72c may be connected to the vertical pipes 34a to 34c, respectively, and the acidic water may be supplied to the vertical pipes 34a to 34c. Of course, a configuration may be adopted in which acidic water is supplied to all or any two places in the urinals 1a to 1c, the pipes 34a to 34c, and the horizontal drainage pipe 58 in the vicinity thereof.

Moreover, as shown in FIG. 31, you may provide the some acidic water production | generation apparatuses 15a-15c corresponding to each acidic water supply flow path 68a-68c.
One end of the acidic water supply channel 68a is connected to the fluid outlet of the acidic water generator 15a, and the fluid inlet of the acidic water generator 15a is connected to the water supply channel 3 via the branch channel 66a. . An on-off valve 63a is provided in the middle of the branch channel 66a, and the on-off plate 63a is opened when supplying acidic water into the urinal 1a.
Similarly, one end of the acidic water supply channel 68b is connected to the fluid outlet of the acidic water generator 15b, and the fluid inlet of the acidic water generator 15b is connected to the water supply channel 3 via the branch channel 66b. Has been. An on-off valve 63b is provided in the middle of the branch channel 66b, and the on-off valve 63b is opened when supplying acidic water into the urinal 1b.
Similarly, one end of the acidic water supply channel 68c is connected to the fluid outlet of the acidic water generator 15c, and the fluid inlet of the acidic water generator 15c is connected to the water supply channel 3 via the branch channel 66c. Has been. An on-off valve 63c is provided in the middle of the branch flow path 66c, and the on-off valve 63c is opened when supplying acidic water into the urinal 1c.

  In the “acid water supply mode” in each of the specific examples described above, if bubbles are mixed in the acid water to enhance the urine stone dissolving action, the amount of acid water supplied per time can be reduced and the cost can be reduced. Further, it can be expected that the flow rate of the acidic water is slightly slowed due to the mixing of bubbles, and it is possible to increase the contact time with the urine stone and promote the dissolution action of the urine stone.

It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on embodiment of this invention. It is a schematic diagram showing the specific example of an acidic water production | generation apparatus. It is a schematic diagram showing the other specific example of an acidic water production | generation apparatus. It is a schematic diagram showing the other specific example of an acidic water production | generation apparatus. It is a schematic diagram showing the other specific example of an acidic water production | generation apparatus. It is a schematic diagram showing the specific example of a urine stone adhesion amount detection means. It is a figure showing the 1st specific example of each operation | movement timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 2nd specific example of each operation | movement timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 3rd specific example of each operation | movement timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 4th example of each operation timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 5th example of each operation timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 6th specific example of acidic water supply mode. It is a figure showing the 8th example of each operation timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 9th specific example of each operation | movement timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 10th specific example of each operation | movement timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a figure showing the 11th example of each operation timing of the detection by a 1st detection means, the detection by a 2nd detection means, washing water supply, and acidic water supply. It is a schematic diagram for demonstrating the urine stone removal effect test by acidic water. It is a graph which shows that urine stone dissolution to acidic water has pH dependence. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on other embodiment of this invention. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on further another embodiment of this invention. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on further another embodiment of this invention. It is a figure showing the 7th specific example of acidic water supply mode. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus in case a some urinal is connected to the common drain pipe. It is the figure which represented typically the adhesion state of the urine stone of each part in a horizontal drainage pipe. It is a schematic diagram showing the specific example of the timing chart in which "acid water supply mode" is performed simultaneously to a plurality of urinals. It is a schematic diagram showing the other specific example of the timing chart in which "acid water supply mode" is performed simultaneously to a plurality of urinals. It is a schematic diagram showing the specific example of the operation | movement timing chart in the case of prohibiting simultaneous execution with "acid water supply mode" and "washing water supply mode". It is a schematic diagram showing the other specific example of the operation | movement timing chart in the case of prohibiting simultaneous execution with "acid water supply mode" and "washing water supply mode". It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on other embodiment of this invention. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on further another embodiment of this invention. It is a schematic diagram which illustrates the structure of the toilet bowl washing | cleaning apparatus which concerns on further another embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1a-1c ... Urinal, 3 ... Water supply pipe (water supply flow path), 5 ... Washing water supply flow path, 7 ... Branch flow path, 9 ... Acidic water supply flow path, 11 ... Water supply valve, 13 ... Open / close valve , 15 ... acidic water generator, 17, 17a to 17c ... first detection means, 19, 19a to 19c ... second detection means, 20 ... control device

Claims (20)

A water supply channel connected to the source of cleaning water;
A cleaning water supply channel for supplying the cleaning water into the toilet;
An acidic water generator having a fluid inlet and a fluid outlet, and generating acidic water capable of removing urine stone;
A branch channel provided between the water supply channel and the fluid inlet,
An acidic water supply flow path that is connected to the fluid outlet and supplies acidic water generated by the acidic water generator to at least one of the drain pipe connected to the inside of the toilet and the downstream side of the drain of the toilet. When,
A first state in which the wash water flowing through the water supply flow path is supplied into the toilet through the wash water supply flow path; and the acidic flow of the wash water flowing through the water supply flow path through the branch flow path A switching means capable of switching between the second state supplied to the water generating device,
A first detection means for detecting a human body or washing water discharge request operation;
A second detection means for detecting the supply timing of the acidic water;
Control for switching to the first state based on the detection information of the first detection means and executing the washing water supply mode, and the second detection means when the detection information of the second detection means reaches a predetermined value. A control device capable of executing the acidic water supply mode by switching to the state of
With
The control device prohibits the cleaning water supply mode and the acidic water supply mode from being executed at the same time, gives priority to one of the modes, and prohibits the other mode while the one mode is being executed. A toilet cleaning device characterized by that.   When the detection by the first detection unit and the detection by the second detection unit occur at the same time, the control device prioritizes the acidic water supply mode and cancels the execution of the washing water supply mode, or The toilet flushing apparatus according to claim 1, wherein the flush water supply mode is executed after a lapse of a predetermined time after the acidic water supply mode is finished.   When the second detection unit detects the acidic water supply timing during execution of the cleaning water supply mode, the control device waits for execution of the acidic water supply mode, and after the end of the cleaning water supply mode, The toilet bowl cleaning apparatus according to claim 1 or 2, wherein an acidic water supply mode is executed.   When the first detection unit detects use of a toilet while the acidic water supply mode is being executed, the control device executes the wash water supply mode after a predetermined time has elapsed after the acidic water supply mode is ended. The toilet bowl washing device according to any one of claims 1 to 3, wherein   When the first detection unit detects use of a toilet bowl during the execution of the acidic water supply mode, the control device interrupts the execution of the acidic water supply mode once and passes the washing water supply mode after a predetermined time has elapsed. The toilet cleaning device according to any one of claims 1 to 3, wherein the execution of the acidic water supply mode is resumed again after completion of the cleaning water supply mode.   The said control apparatus cancels | releases execution of the said wash water supply mode, when the said 1st detection means detects use of a toilet bowl during execution of the said acidic water supply mode. The toilet bowl washing | cleaning apparatus as described in any one.   The toilet cleaning device according to any one of claims 1 to 6, wherein the control device automatically executes the washing water supply mode after a predetermined time has elapsed after the acidic water supply mode ends.   The cleaning water supply mode is intermittently executed in two stages of pre-cleaning and post-cleaning, and when the second detection unit detects acidic water supply timing during the pre-cleaning, the control device The toilet cleaning apparatus according to claim 1, wherein the acidic water supply mode is executed after the post-cleaning.   The toilet cleaning device according to any one of claims 1 to 8, wherein the control device prohibits the execution of the washing water supply mode for a predetermined time after the acidic water supply mode ends.   The control device executes the acidic water supply mode when the use frequency of the toilet reaches a predetermined number of times, and when the supply timing of the acidic water overlaps with the supply timing of the cleaning water, The toilet cleaning device according to claim 1, wherein the acidic water supply mode is executed by canceling the operation.   The toilet bowl cleaning apparatus according to any one of claims 1 to 10, wherein the acidic water supply mode is intermittently executed in a plurality of times.   The toilet cleaning device according to any one of claims 1 to 10, wherein the acidic water supply mode is intermittently executed in a plurality of times with different flow rates of acidic water.   The toilet water washing device according to any one of claims 1 to 12, wherein a supply flow rate of the acidic water in the acidic water supply mode is smaller than a supply flow rate of the washing water in the washing water supply mode.   The toilet bowl washing device according to any one of claims 1 to 13, wherein a flow rate of acidic water in the acidic water supply mode is slower than a flow rate of washing water in the washing water supply mode.   The toilet cleaning device according to any one of claims 1 to 12, wherein the supply flow rate of acidic water in the acidic water supply mode is greater than the supply flow rate of cleaning water in the cleaning water supply mode.   The toilet bowl washing apparatus according to any one of claims 1 to 13, wherein the acidic water flow rate in the acidic water supply mode is faster than the wash water flow rate in the washing water supply mode.   The toilet ion cleaning apparatus according to any one of claims 1 to 16, wherein a hydrogen ion concentration index (pH) of the acidic water is 6 or less.   The toilet bowl cleaning device according to any one of claims 1 to 17, wherein bubbles are mixed in the acidic water.   The toilet cleaning device according to any one of claims 1 to 18, wherein the second detection means detects an amount of urine stone adhering to the drain pipe. Each drain outlet of the plurality of toilet bowls is connected to the common drain pipe,
The said control apparatus prohibits execution of the said wash water supply mode in another toilet, when the said acidic water supply mode is performed by any one of these toilet bowls. The toilet bowl washing device according to any one of -19.

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