JP6150104B2 - urinal - Google Patents

Description

  The present invention relates to a urinal that maintains hygiene using a drug.

  Washing-type urinals that maintain hygiene by supplying water after each use are widely used. Human urine contains various germs. If urine remains in the bowl of a urinal after use, the germs in the urine grow further over time, and the urea in the urine is decomposed to produce ammonia. In addition, ammonia odor and urine stone (solid matter such as calcium phosphate and magnesium phosphate derived from urine-containing components) are generated. For this reason, in a general flush toilet, the urine remaining in the bowl is washed away by discharging water into the bowl of the urinal.

  In addition, in this conventional flush toilet, the water is discharged into the bowl, so that the water flows into the trap connected downstream of the bowl, and the stored urine is replaced with the water and discharged. doing. Furthermore, the urine remaining in the drain pipe connected downstream of the trap is washed away with water supplied from the bowl through the trap. Thereafter, the discharge of water is finished in a state where the trap is filled with water. As a result, the urine remaining in the bowl, etc., is washed away before the bacteria in the urine grow significantly, suppressing the generation of ammonia and the generation of urinary stones, preventing the generation of odors and clogging of drainage pipes due to urinary stones ing. The water that fills the trap functions as a sealing water and prevents the backflow of odor from the drain pipe. Since there is only water in the playing card after cleaning, even if the sealed water in the trap volatilizes and diffuses into the toilet room where the urinal is installed, the volatile component does not cause odor.

  By the way, in response to the recent increase in environmental awareness, high-level water-saving performance is required for equipment that uses water, and urinals are no exception. However, in the flush toilet as described above, the urine in the bowl, the urine replacement / discharge in the trap, and the urine in the drain pipe are washed out by discharging water once into the bowl. Since a relatively large amount of water is required to reliably perform these, it is required to further reduce the amount of water used from the viewpoint of saving water.

  As an example of a urinal corresponding to the demand for water saving, a non-washing urinal having a trap as shown in Patent Document 1 below is known. A general flush toilet supplies water every time after use, and uses water stored in the trap as sealed water, whereas in a non-wash toilet equipped with a trap shown in Patent Document 1 below, Water supply after use is basically not performed, and urine stored in the trap is used as sealing water.

  When the urine stored in the trap is used as sealing water, there is a concern about the generation of odor due to the volatilization of ammonia in the urine and diffusion into the toilet room, and the generation of urinary stones in the trap. In response to this concern, the trap disclosed in Patent Document 1 below attempts to solve this problem by using a drug. A drug such as citric acid is disposed at a position where it contacts the urine flowing into the trap, and the drug dissolved by the contact flows into the trap together with the urine. Thus, the trap shown in the following Patent Document 1 suppresses the growth of miscellaneous bacteria in the urine stored in the trap by supplying the drug into the trap using the user's urine, It is intended to prevent the generation of odors and urine stones.

  This trap has an inexpensive and replaceable configuration (cartridge). Therefore, even if the drug disappears due to the use of a urinal, the occurrence of urinary stones in the trap proceeds, and the urine discharge performance from the trap eventually deteriorates, if the trap is replaced with a new one, The urinal can still be used.

Special table 2007-518005 gazette

  However, in the urinal shown in the above-mentioned Patent Document 1, when the amount of the drug is reduced by use and eventually disappears, naturally, it becomes impossible to suppress the proliferation of urinary bacteria in the trap. If urinals continue to be used after the disappearance of the drug, it will not be possible to prevent the generation of odors and urinary stones in the urine in the trap, as well as in the drainage pipe into which the urine discharged from the trap flows. Urine stone develops. As for traps, even if urine stones are generated and their performance deteriorates, recovery can be achieved by replacement as described above, but urine stones are generated in the drain pipes installed in the toilet room etc. If clogging occurs, replacement or performance recovery is not easy. In order to protect the drainage pipe from clogging with urine stones, a method of supplying water to the drainage pipe is also conceivable. However, the significance of adopting the drug for saving water is lost.

  This invention is made | formed in view of such a subject, The objective is to provide the urinal which can suppress generation | occurrence | production of the urinary stone in a drain pipe, without impairing water saving.

  In order to solve the above problems, a urinal according to the present invention is a urinal device that suppresses the back flow of odor from a drain pipe by sealing water, and maintains the sanitation of the urinal by a medicine. A toilet includes a standing wall portion facing a user, a bowl portion having a bottom surface portion for guiding urine received by the standing wall portion to a drainage port, an inlet portion for allowing urine discharged from the drainage port to flow inside, and the inlet port A trap unit that has a storage part that stores urine flowing from the part and forms sealed water, and communicates with the drain pipe. The trap unit is configured such that a medicine that functions to suppress the generation of ammonia odor and urolith using urine as a generation source is disposed in the reservoir, and the medicine can be replenished to the reservoir. Furthermore, when the remaining amount of the medicine is equal to or less than a predetermined amount, urine delivery regulation means for regulating urine delivery from the trap unit to the drain pipe is provided.

  According to the urinal according to the present invention, when the remaining amount of the medicine is equal to or less than a predetermined amount, including the case where the remaining amount of the medicine becomes zero, the urine delivery from the trap unit to the drain pipe is regulated. Thus, it is possible to suppress the urine from flowing into the drain pipe without the generation of ammonia odor and urinary stones. Thereby, even if it is a case where the chemical | medical agent which decreases with use of a urinal is used, a drain pipe can be protected from generation | occurrence | production of an odor, and the clogging with a urine stone.

  Further, in the urinal according to the present invention, the trap unit has a medicine mounting member that functions as the urine delivery regulating means to which the medicine is attached, and the entire trap unit or the medicine mounting member is replaced, It is also preferable that the reservoir can be replenished with the medicine.

  In this preferred embodiment, since the medicine can be replenished to the reservoir by exchanging the entire trap unit or the medicine mounting member, the medicine can be easily replenished to the reservoir. Since the drug mounting member functions as a means for regulating urine delivery, replacement is possible even when urine stones adhere to the drug mounting member due to the use of a urinal, making it difficult to maintain the performance of suppressing urine delivery. Therefore, the performance can be reliably recovered and the drain pipe can be protected.

  Further, in the urinal according to the present invention, the trap unit is configured to reduce the volume of the drug by inflow of urine, and further, the amount of decrease in the volume of the drug from the start of use of the drug is a predetermined amount or more. Then, it is also preferable that the urine is sent from the trap unit to the drain pipe so that urine is retained in the bowl portion.

  In this preferred embodiment, when the volume of the drug decreases and the risk of ammonia odor and urine stone generation increases, urine delivery is restricted to protect the drainage pipe and urine is retained in the bowl portion. This retention of urine makes it possible for the user to visually recognize that urine delivery is regulated, to refrain from using the urinal, and to avoid further deterioration in hygiene. By regulating the delivery of urine and the supply of urine with such a simple configuration, it is possible to suppress the replacement cost of the trap unit and the like, and to inform the user that it is time to replace it for replenishing medicine. It is possible to recognize and further reliably protect the drain pipe.

Further, in the urinal according to the present invention, the trap unit is configured to reduce the flow rate of urine that can flow out from the bowl portion through the trap unit to the drain pipe when the volume of the medicine decreases. It is also preferable.

In this preferred embodiment, when the volume of the medicine is reduced, it becomes possible to regulate the delivery of urine with a simple configuration that reduces the flow rate of urine that can flow out to the drain pipe, further reducing the replacement cost of the trap unit and the like. However, it is possible to protect the drain pipe.

Moreover, in the urinal according to the present invention, the trap unit has a degree of decrease in the volume of the drug more than before the amount of decrease in the volume of the drug from the start of use of the drug becomes a predetermined amount or more. On the other hand, it is also preferable that the degree of flow of urine that can flow into the drain pipe is reduced .

When the flow rate of urine that can flow out to the drain pipe is proportionally reduced with respect to the decrease in the volume of the medicine, the urine transportability gradually deteriorates as the use of the urinal progresses. Therefore, the user who sees the change in which the transportability deteriorates mistakes that the drug has disappeared even though the drug still remains, and the trap unit or the like is not used for replenishing the drug. There is a risk of replacement if necessary. Therefore, in this preferred embodiment, the urine transportability is maintained high until the drug disappears in the latter half of the use of the medicine by reducing the flow rate of urine that can flow out to the drain pipe more rapidly than in the first half of the use. It is possible to prevent the user from misidentifying as described above.

In the urinal according to the present invention, the medicine is composed of a first material and a second material, and the dissolution rate for urine is higher in the second material than in the first material, and the trap unit is A first step of preferentially dissolving the first material over the second material, and a second step of preferentially dissolving the second material over the first material, The first stage is executed from the start of use of the medicine until the amount of decrease in the volume of the medicine reaches a predetermined amount, and the second stage is executed subsequent to the first stage. In the stage, it is preferable that the degree of flow rate of urine that can flow out to the drain pipe is smaller than the first stage in relation to the degree of decrease in the volume of the medicine.

In this preferred embodiment, the second material having a relatively high dissolution rate is preferentially dissolved over the first material in the later stage of use of the drug , so that urine that can quickly flow into the drain immediately before the drug disappears . The flow rate can be reduced. Therefore, it is possible to maintain high urine transportability until just before the drug disappears with a simple structure in which the drug is formed using materials having different dissolution rates in urine, even though the drug still remains. Therefore, it is possible to avoid misrecognizing that the medicine has disappeared and unnecessarily exchanging the trap unit or the like for supplementing the medicine.

  Further, in the urinal according to the present invention, the trap unit is configured to close the opening of the inlet when the amount of decrease in the volume of the drug from the start of use of the drug exceeds a predetermined amount. It is also preferable.

  In this preferred embodiment, even when the amount of medicine is reduced and ammonia is easily generated in the urine inside the trap unit, the opening of the inlet portion of the trap unit is closed to suppress the generation of odor, and the bowl side Therefore, it is possible to prevent new urine from flowing into the trap unit. By restricting the flow of new urine from the bowl portion side, urine can remain in the bowl portion, and the user can be made aware that it is time to replenish the medicine.

In the urinal according to the present invention, it is also preferable that the trap unit is configured to minimize the flow rate of urine that can flow out to the drain pipe before the medicine is completely dissolved.

In this preferred embodiment, the flow rate of urine that can flow out to the drainage pipe is minimized before all of the medicine arranged in the reservoir is dissolved, that is, in a state where the medicine remains in the reservoir. Therefore, after the flow rate of urine that can flow into the drain pipe is minimized, until the trap unit is replaced and the drug is replenished to the reservoir, ammonia odor and urinary calculus are generated by the remaining drug. Can be maintained, and the generation of odors and urinary stones can be suppressed.

In the urinal according to the present invention, the trap unit has a lid member that opens at least a part of the inlet when the urinal is used, and closes the inlet when the urinal is not used. Preferably, the lid member is formed integrally with the medicine, and when the volume of the medicine is reduced, the flow rate of urine that can flow out to the drain pipe is preferably reduced.

  In this preferable aspect, by exchanging the lid member, it becomes possible to simultaneously perform the replenishment of the medicine and the exchange of the urine delivery regulating means, thereby improving the workability.

  ADVANTAGE OF THE INVENTION According to this invention, the urinal which can suppress generation | occurrence | production of the urine stone in a drain pipe can be provided, without impairing water saving.

It is a schematic block diagram which shows the urinal which concerns on embodiment of this invention. It is a figure which shows the AA cross section of FIG. It is a figure which shows the BB cross section of FIG. It is a block diagram which shows the control structure of the sanitation maintenance apparatus shown in FIG. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the control mode at the time of performing the sanitary maintenance operation | movement of a urinal using the sanitary maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the discharge aspect of the nozzle unit shown in FIG. It is a figure for demonstrating the discharge aspect of the nozzle unit shown in FIG. It is a figure for demonstrating the discharge aspect of the nozzle unit shown in FIG. It is a schematic sectional drawing for demonstrating the trap unit shown in FIG. It is a figure for demonstrating how to melt | dissolve the chemical | medical agent shown in FIG. It is a flowchart for demonstrating the control method of the sanitation maintenance apparatus shown in FIG.1 and FIG.4. It is a flowchart for demonstrating the control method of the sanitation maintenance apparatus shown in FIG.1 and FIG.4. It is a flowchart for demonstrating the control method of the sanitation maintenance apparatus shown in FIG.1 and FIG.4. It is a figure for demonstrating the correlation of pH and odor intensity | strength. It is a figure for demonstrating the correlation of pH and the number of bacteria. It is a figure for demonstrating the correlation with pH and the amount of urine stones. It is a figure for demonstrating the time-dependent change of the microbe and the ammonia adhesion amount on the surface of a urinal. It is a figure for demonstrating the time-dependent change of pH at the time of adding a microbe to urine. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment. It is a schematic sectional drawing for demonstrating the trap unit which concerns on the modification of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate understanding, the same components are denoted by the same reference numerals as much as possible in the drawings, and redundant description is omitted.

  First, a urinal with a sanitary maintenance device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram showing a front view of a urinal US according to an embodiment of the present invention. 2 is a cross-sectional view showing the AA cross section of FIG. 1, and FIG. 3 is a cross-sectional view showing the BB cross section of FIG. The urinal US includes a urinal body 10, a sanitary maintenance device 20, and a trap unit 30.

  The urinal body 10 is installed with its back surface in contact with the wall WL of the toilet room. The urinal body 10 is formed of a material and a forming method that can be formed into an arbitrary shape such as pottery or a resin material. The urinal body 10 includes a nozzle cover 101, a human body detection sensor 102, and a bowl portion 103.

  The nozzle cover 101 is a cover for covering a nozzle unit 202 and a bowl drying fan 203 described later. Since the nozzle unit 202 and the bowl drying fan 203 are disposed above the urinal body 10, the nozzle cover 101 is also disposed above the urinal body 10.

  The human body detection sensor 102 is a sensor for detecting a user who uses the urinal US. The human body detection sensor 102 is provided on the back side near the center of the bowl portion 103. The human body detection sensor 102 is a sensor using a microwave. The human body detection sensor 102 irradiates the microwave through the standing wall portion 104, and the reflected wave returning from the user's body reflects that the user is in use or has finished using it. It can be detected that the user has left the urinal US.

  The bowl portion 103 has a standing wall portion 104 and a bottom surface portion 105. A bottom opening 106 is formed in the bottom portion 105. The bowl portion 103 is a portion that receives urine discharged by the user in a standing posture. The standing wall portion 104 is a portion that faces the user in the stool and directly receives the urine, and is a wall-shaped portion that extends vertically and horizontally. The bottom surface portion 105 is a portion that guides the urine that has been received 104 by the standing wall portion and flows downward to the bottom surface opening portion 106 that is a drainage port, and is a floor-shaped portion that extends in the front-rear and left-right directions. Urine guided to the bottom opening 106 by the bottom 105 is discharged out of the bowl 103 from the bottom opening 106.

  The hygiene maintenance device 20 includes a control unit 201, a nozzle unit 202, and a bowl drying fan 203. The hygiene maintenance device 20 is provided on the back side of the urinal body 10. The control unit 201 outputs a control signal for driving the nozzle unit 202 and the bowl drying fan 203. The control structure of the hygiene maintenance device 20 will be described later.

  The nozzle unit 202 is provided above the standing wall 104 of the bowl 103 and discharges the liquid supplied from the control unit 201 toward the bowl 103. A thin plate-like nozzle cover 101 is provided on the front surface of the nozzle unit 202 and covers the nozzle unit 202 so as not to be seen by the user, thereby improving the design.

  The bowl drying fan 203 is provided above the standing wall 104 of the bowl 103 and is covered with the nozzle cover 101. By driving the bowl drying fan 203, the bowl 103 can be dried by blowing air into the bowl 103.

  The trap unit 30 is provided below the bottom opening 105 that is a drain port. The trap unit 30 is configured to allow the urine discharged from the bottom opening 105 to flow into the inside thereof, and to store the urine that has flowed in to seal water. A drain pipe WT is provided on the wall WL on the downstream side of the trap unit 30. By using urine as the sealing water in this way, odor backflow from the drain pipe WT connected to the downstream side is prevented. The trap unit 30 is configured to be replaceable by being attached to and detached from the bottom opening 105.

  Next, a control configuration of the urinal US will be described with reference to FIG. FIG. 4 is a block configuration diagram showing a control configuration of the urinal US and the sanitary maintenance device 20.

  As shown in FIG. 4, the sanitary maintenance device 20 of the urinal US includes a control unit 201, a nozzle unit 202 (liquid agent discharge means), a bowl drying fan 203, and a power connector 219.

  The control unit 201 includes a CPU 211 (control means), a liquid agent tank 212, an electrolysis unit 213, an electric pump 214, a flow path switching valve 215, a water level sensor 216, a temperature sensor 217, an operation switch 218, a warning A lamp 220.

  The liquid agent tank 212 stores a liquid agent, and stores tap water (water containing chloride ions) in this embodiment. The capacity of the liquid agent tank 212 is 500 ml. In this embodiment, since the piping construction for the water supply to the urinal apparatus 1 becomes unnecessary, it is set as the tank system which stores water. The liquid agent tank 212 is provided with a lid 221, and water can be replenished by removing the lid 221. In addition, it is good also as a system with which tap water is supplied by the water supply pipe arrange | positioned in a toilet room. In this embodiment, tap water containing chloride ions is electrolyzed and supplied as sterilized water containing hypochlorous acid. However, the liquid agent is not limited to water containing hypochlorous acid. For example, a liquid agent using Bacillus bacteria or a bactericidal agent can be used as a liquid agent, and those having an effect on sterilization of urolithiasis can be appropriately employed.

  A water level sensor 216 is provided in the liquid agent tank 212. The water level sensor 216 detects the water level in the liquid agent tank 212 and outputs a measurement signal indicating the detection result to the CPU 211.

  The water stored in the liquid tank 212 is supplied to the electrolysis unit 213 by driving the electric pump 214.

  The electrolysis unit 213 is provided on the downstream side of the electric pump 214. Inside the electrolysis unit 213, a pair of electrodes (not shown in FIG. 4) is provided. The water supplied from the liquid agent tank 212 by the electric pump 214 applies voltage to the pair of electrodes in the electrolysis unit 213, and hypochlorous acid is generated by chloride ions contained in the water. Hypochlorous acid is a substance having a bactericidal and drifting action and is suitable for killing germs in the urine. Water containing hypochlorous acid generated in the electrolysis unit 213 is supplied to the flow path switching valve 215.

  The flow path switching valve 215 is provided on the downstream side of the electrolysis unit 213. The flow path switching valve 215 supplies water containing hypochlorous acid supplied from the electrolysis unit 213 to the nozzle unit 202. More specifically, the flow path switching valve 215 allows water to be discharged from one or more of the bowl mist nozzle 202a, the bowl mist nozzle 202b, the bowl mist nozzle 202c, and the trap liquid nozzle 202d. Switch the road.

  The nozzle unit 202 includes a bowl mist nozzle 202a, a bowl mist nozzle 202b, a bowl mist nozzle 202c, and a trap liquid nozzle 202d. The bowl mist nozzles 202 a, 202 b, and 202 c are for supplying the liquid agent to the bowl portion 103. The trap liquid nozzle 202 d is for supplying the liquid agent to the trap unit 30. The trap liquid nozzle 202d is provided at a position farther from the standing wall portion 104 of the bowl portion 103 than the bowl portion mist nozzles 202a, 202b, 202c.

  The CPU 211 receives detection signals and operation signals from the human body detection sensor 102, the water level sensor 216, the temperature sensor 217, and the operation switch 218, and receives the electric pump 214, the electrolysis unit 213, the flow path switching valve 215, the warning lamp 220, and the bowl drying fan. A control signal is output to 203. A control flow of the CPU 211 as the control means will be described later.

  The operation switch 218 is turned on by a cleaning operator or the like to forcibly drive the electrolysis unit 213 to discharge water containing hypochlorous acid from the nozzle unit 202 toward the bowl and to sterilize the bowl portion. Switch. The operation switch 218 is provided on the assumption that it is turned on at the time of cleaning as described above.

  The human body detection sensor 102 is a sensor for detecting the presence of a user in front of the urinal body 10 as described above. When detecting the presence of the user, the human body detection sensor 102 transmits a detection signal to the CPU 211.

  The temperature sensor 217 is a sensor for detecting the temperature of a toilet room or the like where the urinal US is installed. As will be described later, according to the situation of the urinal US that changes depending on the temperature, in order to efficiently use the liquid agent, it is provided as means for acquiring the temperature. In the present embodiment, the change is observed depending on the temperature. For example, a switch that divides the period of use by summer / winter is provided, and rough control is executed in accordance with the temperature that changes depending on the season. It doesn't matter if you do.

  The bowl drying fan 203 is a fan for drying the surface of the bowl portion 103 as described above. The bowl drying fan 203 is driven based on an instruction signal output from the CPU 211.

  The warning lamp 220 is a lamp that is turned on based on a control signal output from the CPU 211. The warning lamp 220 issues a message having a predetermined content to a cleaning worker or the like according to the timing and interval of blinking and lighting, the lighting color, and the like.

  The power connector 219 supplies power to the sanitary maintenance device 20 by being inserted into an outlet on the building frame side.

  Subsequently, the discharge mode of the liquid agent from the nozzle unit 202 and the operation of the bowl drying fan 203 will be described with reference to FIGS. 5, 6, 7, 8, 9, 10, 11, 12, and 13. 5 to 13 are schematic diagrams for explaining the manner of discharging the liquid agent from the nozzle unit 202 and the operation of the bowl drying fan 203.

  As shown in FIG. 5, the electrolysis unit 213 is provided with an electrode 213a and an electrode 213b. A voltage is applied between the electrode 213a and the electrode 213b by a control signal from the CPU 211 serving as a control means, and water containing hypochlorous acid is supplied to the nozzle unit 202. The water discharged from the nozzle unit 202 is sprayed on the bowl portion 103 and discharged to the trap unit 30 from the bottom surface opening portion 106 which is a discharge port.

  The trap unit 30 temporarily stores urine and water discharged from the nozzle unit 202 and discharges it to the drain pipe UT (see FIG. 3). The trap unit 30 includes a container 301, a cover 302, and a medicine 304. The detailed structure of the trap unit 30 will be described later.

  In the present embodiment, the standing wall portion 104 of the bowl portion 103 is divided into six zones, and the discharge mode of water containing hypochlorous acid is determined in accordance with the tendency of each stain. The upright wall portion 104 is divided into an upper stage and a lower stage, the upper stage is further divided into zone I, zone II, and zone III, and the lower stage is divided into zones IV, zone V, and zone VI. In the upper stage, the zone II is arranged in the center, the zone I is arranged on the left side toward the standing wall portion 104, and the zone III is arranged on the right side. In the lower stage, the zone V is arranged in the center, the zone IV is arranged on the left side toward the standing wall portion 104, and the zone VI is arranged on the right side.

  The liquid agent discharged from the bowl mist nozzle 202a is discharged so as to be directed to the lower left zone IV and the lower right zone VI. The liquid agent discharged from the bowl mist nozzle 202b is discharged so as to be directed to the upper left zone I, the central upper zone II, and the upper right zone III. The liquid agent discharged from the bowl mist nozzle 202c is discharged so as to be directed to the zone V in the lower center. The liquid agent discharged from the trap liquid nozzle 202d is discharged so as to be directed to the bottom opening 106.

  The liquids discharged from the bowl mist nozzles 202a, 202b, and 202c are all supplied to the zones I to VI so as to spread, so that the mist from the bowl mist nozzles 202a, 202b, and 202c is fogged. The liquid agent is discharged in a shape. On the other hand, since the liquid agent discharged from the trap liquid nozzle 202d is reliably supplied to the bottom opening 106, the liquid agent is discharged in liquid form from the trap liquid nozzle 202d.

  More specifically, the liquid agent discharged from the bowl mist nozzle 202a has a relatively large mist particle size and a large flow rate. The flow rate of the liquid discharged from the bowl mist nozzle 202a is medium.

  The liquid agent discharged from the bowl mist nozzles 202b and 202c has a relatively small mist particle size and a small flow rate. The flow rate of the liquid agent discharged from the bowl mist nozzles 202b and 202c is slower than the flow rate of the liquid agent discharged from the bowl mist nozzle 202a.

  The liquid agent discharged from the trap liquid nozzle 202d is discharged as intermittent or continuous liquid water discharge. The flow rate of the liquid discharged from the trap liquid nozzle 202d is variable. The flow rate of the liquid agent discharged from the trap liquid nozzle 202d is approximately the same as the flow rate of the liquid agent discharged from the bowl mist nozzle 202a.

  Next, characteristics of generation of odor and urine stone in each part of the standing wall portion 104 of the bowl portion 103 will be described with reference to FIG. Human urine does not generate a strong odor or urinary stone immediately after urination, but increases its tendency over time. That is, human urine contains countless germs, and the germs in the urine further grow with time, and urea in the urine is decomposed to produce ammonia. Due to the production of ammonia, ammonia odor and urine stone (solid matter such as calcium phosphate and magnesium phosphate derived from urine-containing components) are generated. Therefore, when the user's urine remains in the urinal body 10 for a long time, odors and urinary stones are generated due to the growth of various bacteria in the urine.

  The user of the urinal body 10 urinates in front of the standing wall portion 104, generally standing in the center in the width direction. For this reason, the urine discharged by the user is likely to directly hit the zone II at the center upper part and the zone V at the center lower part, which are the center part in the width direction of the standing wall part 104. In particular, the zone V in the lower center is easy to hit directly regardless of the height of the user. Therefore, even if urine remains in the central upper zone II and the central lower zone V of the standing wall 104 after use (urination) by a certain user, the urine is discharged by the next user and the same part. It is easy to be washed away by urine hitting. Thus, the zone II in the upper center and the zone V in the lower center are easy to be replaced with new urine even if urine remains. Occurrence is relatively mild.

  On the other hand, the upper left zone I, the upper right zone III, the lower left zone IV, and the lower right zone VI, which are both sides in the width direction of the standing wall portion 104 of the bowl portion 103, are the central upper portion which is the central portion in the width direction. The zone II and the zone V in the lower center are less frequently hit by the user's urine, and the urine diffused and scattered by hitting the center in the width direction is more likely to adhere. Therefore, on both sides in the width direction of the standing wall 104, the same urine is likely to remain for a long time without being replaced, and the proliferation of various bacteria therein becomes relatively severe.

  Furthermore, among the both sides in the width direction of the standing wall portion 104 of the bowl portion 103, the growth of germs tends to be particularly severe in the lower left zone IV and the lower right zone VI. This is because the urine remaining in the upper left zone I and the upper right zone II gradually flows into the lower left zone IV and the lower right zone VI due to its own weight, and a relatively large amount of urine remains.

  In this embodiment, sterilization is performed in three modes of “bowl part sterilization mode 1”, “bowl part sterilization mode 2”, and “bowl part sterilization mode 3” with respect to the standing wall part 104 that has the above-described tendency for propagation of various germs It is operating. Note that the state shown in FIG. 5 is a state where the urinal US is in use or in a standby state, and the liquid agent is discharged from the nozzle unit 202 without driving the electrolysis unit 213 or the electric pump 214 (see FIG. 4). “Standby mode” that is not performed.

  FIG. 6 schematically shows the liquid agent discharge status in the “bowl portion sterilization mode 1”. The “bowl sterilization mode 1” will be described with reference to FIGS. 4 and 6. In the “bowl part sterilization mode 1”, the liquid agent is supplied to the lower part (zone IV and zone VI) of both side parts in the width direction where the propagation of various germs is particularly severe among the parts of the standing wall part 104 of the bowl part 103. It is a mode to suppress the generation of odor and urine stones.

  Specifically, by applying a voltage to the pair of electrodes 213a and 213b in the electrolysis unit 213, the liquid agent (water containing chloride ions) supplied from the electric pump 214 is electrolyzed, and hypochlorous acid. Is generated. More specifically, chlorine is generated at the anode side electrode 213b, and hypochlorous acid is generated by a reaction between the chlorine and water. Then, a liquid (water) containing this hypochlorous acid having a sterilizing performance as a medicine is discharged from the bowl mist nozzle 202 a of the nozzle unit 202.

  The liquid discharged from the bowl mist nozzle 202a is discharged so as to be directed directly to the lower left zone IV and the lower right zone VI. After the liquid is supplied to the upper left zone I and the upper right zone III of the standing wall 104, it is not supplied to the lower left zone IV and the lower right zone VI. The direction of the nozzle hole of the bowl mist nozzle 202a is set so that the direction is directed to the lower left zone IV and the lower right zone VI from time to time. As a result, the chemical (hypochlorous acid) is preferentially supplied to the site where the growth of various germs becomes severe in the standing wall portion 104 of the bowl portion 103, and the urinary germs remaining there are killed to produce ammonia. It suppresses the generation of odor and urine stone.

  FIG. 7 schematically shows the liquid agent discharge state in the “bowl part sterilization mode 2”. The “bowl portion sterilization mode 2” will be described with reference to FIGS. 4 and 7. In the “bowl part sterilization mode 2”, the liquid agent is supplied to the upper part of the standing wall part 104 in addition to the lower part of both sides in the width direction of the standing wall part 104 of the bowl part 103, thereby suppressing the generation of odor and urine stone from there. It is a mode for.

  The point that hypochlorous acid is generated in the electrolysis unit 214 is the same as in the “bowl part sterilization mode 1”. The discharge mode from the nozzle is different from the “bowl sterilization mode 1”, and the liquid agent (water containing hypochlorous acid) is discharged from the bowl mist nozzle 202a to the lower left zone IV and the lower right zone VI. In addition, the liquid agent is discharged from the bowl mist nozzle 202b to the upper left zone I, the upper central zone II, and the upper right zone III, which are the upper part of the bowl portion 103.

  FIG. 8 schematically shows the liquid agent discharge state in the “bowl portion sterilization mode 3”. The “bowl part sterilization mode 3” will be described with reference to FIGS. “Bowl part sterilization mode 3” is a situation in which the elapsed time from the previous use of the urinal 1 becomes long, and it is estimated that the proliferation of germs in the standing wall part 104 of the bowl part 103 is remarkable. This mode is for supplying liquids and suppressing the generation of odors and urine stones.

  The point that hypochlorous acid is generated in the electrolysis unit 214 is the same as in the “bowl part sterilization mode 1”. The discharge mode from the nozzle is different from the “bowl sterilization mode 1”, and the liquid agent (water containing hypochlorous acid) is discharged from the bowl mist nozzle 202a to the lower left zone IV and the lower right zone VI. In addition, the liquid agent is discharged from the bowl mist nozzle 202b to the upper left zone I, the upper central zone II, and the upper right zone III, which are the upper part of the bowl portion 103, and from the bowl mist nozzle 202c to the lower central portion. Discharge also into zone V.

  By changing the method of discharging the liquid agent for each part of the standing wall portion 104 of the bowl portion 103 as in the above-described “bowl portion sterilization mode 1”, “bowl portion sterilization mode 2”, and “bowl portion sterilization mode 3”, Odor and urinary stones can be prevented from being generated with the minimum necessary amount of liquid according to the growth of various germs that differ at different sites.

  Next, a discharge mode that discharges the liquid agent to the trap unit 30 and suppresses the generation of odor and urine stone will be described with reference to FIGS. 9, 10, 11, and 12 together with FIG. 4.

  FIG. 9 is a schematic diagram showing a discharge mode of the “trap blocking mode”. In the “trap blockage mode” shown in FIG. 9, the urine stored in the trap unit 30 does not newly flow into the trap unit because the urinal US is not used for a long time, such as on a weekend. Is a mode for recovering the water level in the trap unit 30 when the water vaporizes and the sealed water is insufficient or is likely to be insufficient.

  Specifically, a very small amount of liquid agent (water containing chloride ions) supplied from the electric pump 214 is supplied to the nozzle unit 202 side without driving the electrolysis unit 213. Then, the liquid agent is discharged from the trap liquid nozzle 202 d of the nozzle unit 202. Since the trap liquid nozzle 202 d discharges water toward the trap unit 30, water as a liquid agent is supplied to the trap unit 30 with almost no adhesion to the standing wall portion 104 of the bowl portion 103. As a result, the liquid agent flows into the trap unit 30 and the water level inside is recovered, so that the sealing function is recovered. At this time, the inflowing liquid promotes the dissolution of the medicine 304 disposed in the trap unit 30 to a slight extent, and the function of the medicine 304 suppresses the odor and urine stone of the trap unit 304.

  FIG. 10 is a schematic diagram showing a discharge mode in the “gradual dissolution mode”. The “gradual dissolution mode” shown in FIG. 10 is a case where the urinal US is not used for a longer period of time, and the proliferation of bacteria in the urine stored in the trap unit 30 is severe. This is a mode for promoting dissolution of the drug 304.

  Specifically, a slightly larger amount of liquid agent (water containing chloride ions) supplied by driving the electric pump 214 is supplied to the nozzle unit 202 side without driving the electrolysis unit 213. Then, a slightly larger amount of the liquid agent is discharged from the trap liquid nozzle 202 d of the nozzle unit 202. Since the trap liquid nozzle 202 d discharges water toward the trap unit 30, water as a liquid agent is supplied to the trap unit 30 with almost no adhesion to the standing wall portion 104 of the bowl portion 103.

  As a result, a slightly larger amount of the liquid agent flows into the trap unit 30 and the urine in the trap unit 30 that has been saturated by the drug dissolved so far is diluted, so that dissolution of the drug is promoted. By promoting dissolution of the drug 304, various germs in the trap unit 30 are killed, and the generation of odor and urinary stone is further suppressed.

  FIG. 11 is a schematic diagram illustrating a discharge mode in the “trap replacement mode”. In the “trap replacement mode” shown in FIG. 11, when the urinal US is not used for an extremely long time, such as during a long holiday, the liquid stored in the trap unit 30 is replaced with urine as a countermeasure. This is a mode for discharging from the trap unit 30.

  Specifically, a large amount of liquid agent (water containing chloride ions) supplied by driving the electric pump 214 is supplied to the nozzle unit 202 side without driving the electrolysis unit 213. Then, the larger amount of the liquid agent is discharged from the trap liquid nozzle 202 d of the nozzle unit 202. Since the trap liquid nozzle 202 d discharges water toward the trap unit 30, water as a liquid agent is supplied to the trap unit 30 with almost no adhesion to the standing wall portion 104 of the bowl portion 103.

  Thereby, a large amount of liquid agent flows into the trap unit 30, and the urine stored up to that time is discharged to the drain pipe WT by the liquid agent, so that the ratio of urine in the trap unit 30 is reduced. In a situation where the urinal 1 is not used for an extremely long time, in order to suppress odor and the like in the urine in the trap unit 30, the urine in the trap unit 30 is used rather than supplying a small amount of medicine or liquid many times. It is efficient to replace the solution at once. This mode is based on the idea that the amount of liquid or medicine required to maintain the state in which the subsequent odor or the like is suppressed is small when the replacement is performed at once.

  FIG. 12 is a schematic diagram illustrating a discharge mode of the “drain pipe sterilization mode”. The “drainage sterilization mode” shown in FIG. 12 is for regularly supplying a large amount of liquid medicine and chemicals to protect the drainage pipe WT from generation of urine stones and odors (for example, once a month). Mode. This mode is executed when the cleaning operator or the like turns on the operation switch 218.

  Specifically, the liquid agent (water containing chloride ions) supplied by driving the electric pump 214 is supplied to the nozzle unit 202 as it is without driving the electrolysis unit 213. Then, the liquid agent is intermittently ejected from the trap liquid nozzle 202 d of the nozzle unit 202 with a predetermined time interval. The liquid agent discharged here is all of the liquid agent stored in the liquid agent tank 212. Thereby, the chemical | medical agent 304 melt | dissolved with the liquid agent supplied in the trap unit 30 is intermittently supplied in large quantities to the drain pipe WT. Therefore, the drain pipe WT, which is difficult to replace unlike the trap unit 30, can be reliably protected from clogging due to urine stone generation.

  Next, a “bowl portion drying mode” that suppresses generation of odor and urine stone by blowing air to the bowl portion 103 will be described with reference to FIG. FIG. 13 is a schematic diagram illustrating a discharge mode in the “bowl portion drying mode”.

  In the “bowl drying mode” shown in FIG. 13, after executing “bowl portion sterilization mode 1”, “bowl portion sterilization mode 2”, and “bowl portion sterilization mode 3”, the germs in the bowl portion 103 are more surely killed. The mode to be executed. Specifically, the electrolysis unit 213 and the electric pump 214 are not driven, and the liquid agent is not discharged from the nozzle unit 202. On the other hand, the bowl drying fan 203 is driven to send air to the entire bowl portion 103. The whole bowl part 103 is in a dry state, and the bowl part 103 can be maintained in a state in which various germs hardly grow.

  Next, the characteristics of the nozzle unit 202 will be described with reference to FIGS. FIG. 14 is a schematic diagram showing a state of the liquid agent discharged from the bowl mist nozzle 202a. FIG. 15 is a schematic diagram showing a state of the liquid discharged from the bowl mist nozzles 202b and 202c. FIG. 16 is a schematic diagram illustrating a state of the liquid agent discharged from the trap liquid nozzle 202d.

  A bowl mist nozzle 202a shown in FIG. 14 is a nozzle for supplying the liquid agent to the lower left zone IV and the lower right zone VI in the portion of the standing wall portion 104 of the bowl portion 103. The bowl mist nozzle 202a has a plurality of (three in the present embodiment) nozzle holes 202aa on its lower surface, and the liquid agent is made into a mist (mist) from each nozzle hole 202aa. Discharge. In this case, the particle size, flow rate, and flow rate of the liquid discharged are all set larger than those of bowl mist nozzles 202b and 202c, which will be described later. This is because the bowl mist nozzle 202a discharges to the lower left zone IV and the lower right zone VI of the standing wall 104, which are far from the upper part of the bowl 103 to which the nozzle unit 202 is attached. This is so that the mist can reach.

  A bowl mist nozzle 202b shown in FIG. 15 is a nozzle for supplying a liquid agent to the upper left zone I, the central upper zone II, and the upper right zone III in the portion of the standing wall portion 104 of the bowl portion 103. . The bowl mist nozzle 202 c is a nozzle for supplying the liquid agent to the zone IV at the lower center of the portion of the standing wall portion 104 of the bowl portion 103. The bowl mist nozzles 202b and 202c have a plurality of relatively small diameter (five in this embodiment) nozzle holes 202ba and 202ca on the lower surface, and the liquid agent is mist-like from each nozzle hole. To discharge.

  Here, when water containing hypochlorous acid is discharged in the form of a mist, the concentration of hypochlorous acid is attenuated while drifting in the air, and the disinfection effect is almost expected at a position far from the discharge position. become unable. Further, the concentration attenuation of hypochlorous acid becomes more remarkable as the particle size of the discharged water becomes smaller.

  Based on the above knowledge, the particle diameter and flow rate of the liquid agent discharged in the form of mist from the bowl mist nozzle 202a are both configured to be larger than the water discharged from the bowl mist nozzles 202b and 202c. Yes. Specifically, the diameter of the nozzle hole 202aa provided in the bowl mist nozzle 202a is made larger than the diameter of the nozzle holes 202ba and 202ca of the bowl mist nozzles 202b and 202c, while the number of holes is reduced. Yes.

  Accordingly, when water containing hypochlorous acid is discharged into the lower left zone IV and the lower right zone VI of the standing wall 104, which is relatively far from the nozzle unit 202, the particle size of the water is increased. can do. Therefore, the concentration attenuation of hypochlorous acid can be suppressed and the germs in the site can be surely killed. On the other hand, when discharging to the upper left zone I, the upper central zone II, and the upper right zone III in the standing wall 104, which is relatively close to the nozzle unit 202, the particle size of water can be reduced. Therefore, water can easily adhere to the part, and hypochlorous acid contained in the water can sufficiently function to kill germs.

  A trap liquid nozzle 202 d shown in FIG. 16 is a nozzle for supplying the liquid agent directly to the trap unit 30. Specifically, the liquid agent is discharged toward the wall surface of the bowl portion 103 and flows down along the standing wall portion 104 to supply the liquid agent to the trap unit 30, but is dropped from the trap liquid nozzle 202 d into the air. The liquid agent is supplied almost directly to the trap unit 30. The liquid agent discharged at this time is not mist but liquid.

  In this way, the nozzles for discharging the liquid agent to the bowl portion 103 and the trap unit 30 are made separate, and the bowl mist nozzles 202a, 202b, 202c are directed closer to the standing wall portion 104 of the bowl portion 103 than the trap unit 30. The liquid agent is discharged, and the trap liquid nozzle 202d discharges the liquid agent so as to be directed closer to the trap unit 30 than the standing wall portion 104 of the bowl portion 103.

  Thereby, the liquid agent can be reliably supplied to the urine remaining in the standing wall portion 104 of the bowl portion 103 by the bowl mist nozzles 202a, 202b, and 202c. On the other hand, the urine stored in the trap unit 40 is reliably supplied to the urine of the trap unit 39 by discharging the liquid agent by the trap liquid nozzle 202d and suppressing the discharged liquid agent from interfering with the bowl portion 103. At the same time, it is possible to reduce the flow of miscellaneous bacteria adhering to the standing wall portion 104 of the bowl portion 103 into the trap unit 40 by the liquid agent.

  Next, the configuration of the trap unit 30 will be described with reference to FIG. FIG. 17 is a schematic cross-sectional view showing the configuration of the trap unit 30. FIG. 17A shows an initial state before the medicine 304 is melted, and FIG. 17B shows that the medicine 304 is completely melted. Indicates the state.

  As shown in FIG. 17A, the trap unit 30 includes a container 301 and a cover 302. The container 301 has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Therefore, the bottom 301b and the side 301a make the container 301 into a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing liquid therein. A plurality of outlet portions 301c are formed at an upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301 are communicated with each other by the outlet portions 301c.

  A cover 302 is provided above the container 301. The cover 302 includes an inclined wall 302a, an inlet portion 302b, and a cylindrical partition wall 302c. The inclined wall 302a is inclined toward the inlet portion 302b opened at the lower portion. The cylindrical partition wall 302c extends from the outer edge of the inlet portion 302b to the side opposite to the inclined wall 302a.

  A socket 309 is inserted into the cylindrical partition wall 302c from below. The socket 309 has a bottom portion 309d and a cylindrical portion 309e. The bottom 309d is formed so as to close the lower end of the cylindrical partition wall 302c. The cylindrical portion 309e is formed so as to extend to one side from the outer edge of the bottom portion 309d, and is disposed along the inner side of the cylindrical partition wall 302c. A small-diameter channel 309b is provided so as to pass through the approximate center of the bottom 309d.

  A plurality of protrusions 309a are provided on the cylindrical portion 309e side of the small diameter channel 309b so as to be spaced apart from each other along the same direction as the cylindrical portion 309e. A space enclosed by the cylindrical portion 309e is configured as a large-diameter channel 309c, and is connected to the storage chamber 301d through the small-diameter channel 309b. A packing 308 is interposed between the socket 309 and the cylindrical partition wall 302c.

  In addition to the socket 309, an inlet closing valve 303, a medicine 304, a base 305, a spring 306, and a communication port closing valve 307 are disposed inside the cylindrical partition wall 302 c.

  The pedestal 305 is placed on the upper end of the socket 309 so as to cover the large-diameter channel 309c from above. The pedestal 305 is formed with a plurality of communication paths 305a at intervals in the circumferential direction. An inlet blocking valve 303 is disposed above the pedestal 305. A spring 306 is disposed between the pedestal 305 and the inlet closing valve 303. As the spring 306 expands and contracts, the inlet blocking valve 303 can slide in the vertical direction with respect to the base 305. Since the spring 306 is disposed in a compressed state, when the external force is not applied, the inlet blocking valve 303 is pushed up until it abuts on the lower surface in the vicinity of the inlet portion 302b to shield the inlet portion 302b.

  The communication port closing valve 307 and the medicine 304 are provided inside the large-diameter channel 309c of the socket 309 below the pedestal 305. Specifically, a solid medicine 304 is placed on the plurality of protrusions 309 a of the socket 309, and a communication port sealing valve 307 is placed on the medicine 304. A plurality of communication passages 307 a are formed in the communication port blocking valve 307 at intervals in the circumferential direction.

  The solid medicine 304 includes a first medicine 304a located on the outer surface before the start of use, and a second medicine 304b located inside so as to be covered with the first medicine 304a. Although both the first drug 304a and the second drug 304b have a function of killing germs in urine by dissolving in urine, the dissolution rate in urine is higher than that of the first drug 304a. The second medicine 304b is larger.

  The operation in the trap unit 30 will be described with reference to FIG. The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30 and is collected in the inlet 302b by the inclination of the inclined wall 302a on the upper surface. The collected urine is stored on the inlet blocking valve 303.

  When the amount of urine stored on the inlet blocking valve 303 becomes a predetermined amount, the inlet blocking valve 303 is pushed down against the biasing force of the spring 306 due to its weight. As a result, the inlet 302b is released and the stored urine flows into the cylindrical partition 302c. The urine flowing into the cylindrical partition wall 302 c passes through the communication passage 305 a of the base 305 and passes through the communication passage 307 c of the communication port blocking valve 307.

  The urine that has passed through the communication path 307a reaches the side of the medicine 304 disposed below the urine. The drug 304 is dissolved by contact with urine. The urine further flows under the medicine 304 through the gaps of the plurality of protrusions 309a of the socket 309 and reaches the small diameter channel 309b. Urine flows through the small-diameter channel 309b, is discharged from the socket 309, and is stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet sealing valve 303, so that the urine stored in the storage chamber 301d until then is pushed out so that it is pushed out of the side portion 301a. It is discharged from the outlet 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid drug 304 is configured to decrease in volume as it is used. Due to this volume reduction, the communication port closing valve 307 placed on the medicine 304 descends in the large-diameter channel 309c. When the medicine 304 disappears, as shown in FIG. 17B, a projection 307b provided on the lower surface of the communication port blocking valve 307 is fitted into the small-diameter channel 309b. As a result, the small-diameter channel 309b is blocked, new urine cannot enter the storage chamber 301d from the inlet 302b, and urine delivery from the trap unit 30 to the drain pipe WT is restricted.

  Thus, since urine cannot flow into the trap unit 30, the urine stays in the bowl portion 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning worker or the like recognizes that it is time to replace the medicine for replenishment, and prevents the urine in which the medicine 304 is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Next, the lowering of the communication port closing valve 307 will be described with reference to FIG. 18 in addition to FIG. FIG. 18 is a graph showing a descending amount of the communication port closing valve 307.

  In the graph shown in FIG. 18, the urine volume Q that has passed through the trap unit 30 is shown on the horizontal axis. That is, the right side of the horizontal axis indicates that the urinal US has been used for a long period of time and the amount of urine that has passed through the trap unit 30 has increased. On the other hand, the vertical axis indicates the amount of lowering L of the communication port closing valve 307. That is, as shown in FIG. 17 (A), the state where the communication port blocking valve 307 placed on the medicine 304 is located at the uppermost position before the use of the medicine 304 is set as the reference position O, and used. Accordingly, the amount by which the volume of the medicine 304 is reduced and the communication port blocking valve 307 is lowered from the reference position is indicated as a drop amount L.

  When the change of the graph shown in FIG. 18 is seen, the inclination in the sections P1-P2 is extremely large with respect to the inclination in the sections P0-P1. This is because among the first drug 304a and the second drug 304b constituting the drug 304, in the sections P0 to P1, the first drug 304a existing on the surface from the start of use is preferentially dissolved, whereas the section P1 This is because the second drug 304b that has been covered with the first drug 304a so far is preferentially dissolved in -P2.

  In the initial stage of use of the drug 304, the first drug 304a, which has a relatively low dissolution rate in urine, is preferentially dissolved. Therefore, the volume reduction of the drug 304 with respect to the urine amount Q that has passed through the trap unit 30 is relatively gentle. On the other hand, in the latter stage of use of the drug 304, the second drug 304b that has been coated until then is exposed on the surface due to the dissolution of the first drug 304a. Begins. As a result, the volume decrease of the medicine 304b with respect to the urine amount Q passing through the trap unit 30 is accelerated, and the lowering of the communication port sealing valve 307 is also accelerated.

  In the trap unit 30 shown in FIG. 18, assuming that the disappearance speed of the medicine 304 is constant, the lowering of the communication port sealing valve 307 accompanying use is also a constant speed. Then, the channel cross-sectional area of the urine transport channel in the large-diameter channel 309c gradually decreases, and the urine transport performance gradually deteriorates. Assuming that the transportability gradually deteriorates in this way, there is a risk that a user who sees the change will misunderstand that the drug 304 has disappeared even though the drug 304 still remains. There is. Such misidentification of the disappearance of the medicine leads to unnecessary replacement of the trap unit 30 and the medicine 304 for the supplementation of the medicine.

  Therefore, the medicine 304 of the present embodiment has a simple configuration of the first medicine 304a and the second medicine 304b, but dissolves more rapidly in the later period of use than in the earlier period of use and breaks the flow path of the transport channel. By adopting a configuration in which the area rapidly decreases, it is possible to maintain high urine transport until immediately before the medicine 304 disappears, and to prevent the above-described misidentification by users.

  Subsequently, a control operation in the urinal US of the present embodiment will be described with reference to FIG. FIG. 19 is a flowchart showing a control operation in the bowl part sterilization of the urinal US. The urinal US of the present embodiment includes the “standby mode”, “bowl sterilization mode 1”, “bowl sterilization mode 2”, “bowl sterilization mode 3”, “trap blockage mode”, “gradual dissolution mode”, and “trap replacement mode”. "Drain pipe sterilization mode" and "Bowl portion drying mode" are appropriately combined and executed in consideration of the usage status and the propagation status of the bacteria.

  In step S01, the CPU 211 determines whether or not the urinal US is being used. The CPU 211 determines that the urinal US is in use if the human body detection signal is output from the human body detection sensor 102, and the urinal US is not in use if the human body detection signal is not output from the human body detection sensor 102. Judge. If it is determined that the urinal US is in use, the process proceeds to step S10. If it is determined that the urinal US is not in use, the process proceeds to step S02.

  In step S10, the CPU 211 forcibly executes the “standby mode”. If the urinal US is in use, the water discharged from the nozzle unit 202 is applied to the user, and therefore, in order to avoid such a situation, the “standby mode” in which the cleaning and sterilization operation is not performed is executed.

  In step S02, the CPU 211 determines whether or not the average room temperature for the last two hours is 25 ° C. or higher. If the average room temperature is 25 ° C. or higher, the growth of bacteria is promoted, and therefore, the treatment is performed to increase the sterilization frequency. In the present embodiment, the determination is made based on the average room temperature, but it is also preferable to use, for example, whether or not it is summer season as a determination criterion. If the average room temperature is 25 ° C. or higher, the process proceeds to step S03. If the average room temperature is not 25 ° C. or higher, the process proceeds to step S11.

  In step S03, the CPU 211 determines whether or not two hours have elapsed since the previous bowl sterilization. If the average room temperature is not 25 ° C or higher and 2 hours have not passed since the previous bowl sterilization, the growth of the bacteria is not so much. If it exceeds 2 hours, the propagation of the bacteria will proceed, so it is determined whether or not 2 hours have passed since the previous bowl sterilization.

  Here, referring to FIGS. 22, 23, 24, 25, and 26, it is not always necessary to wash each time as in a conventional flush toilet, and the frequency may be performed at a certain time interval. explain.

FIG. 22 is a diagram for explaining the correlation between pH and odor intensity. In FIG. 22, the horizontal axis represents the pH in the trap, and the vertical axis represents the odor intensity. When the odor intensity exceeds 1, the odor can be recognized. As shown in FIG. 22, if the pH is 8 or less, non-volatile NH ₄ ⁺ becomes dominant, and if it exceeds pH 8, volatile NH ₃ becomes dominant, so the pH in the trap is 8 or less. It turns out that suppression is necessary for odor suppression.

  FIG. 23 is a diagram for explaining the correlation between pH and the number of bacteria. In FIG. 23, the horizontal axis represents the standing time, the vertical axis represents the number of bacteria, and the transition of the number of bacteria for each pH is shown. As shown in FIG. 23, it can be seen that the number of bacteria does not increase over time if the pH is suppressed to 4 or less.

FIG. 24 is a diagram for explaining the correlation between pH and the amount of urine stone. In FIG. 24, the horizontal axis represents pH, and the vertical axis represents NH ₄ production rate. As shown in FIG. 24, it can be seen that urease becomes inactive when pH is 4.5 or less, generation of ammonia is suppressed, and generation of urinary stones is also suppressed.

FIG. 25 is a diagram for explaining changes over time in the amount of bacteria and ammonia attached to the surface of the urinal. In FIG. 25, the horizontal axis represents the usage time, and the vertical axis represents the NH ₄ adhesion amount and the number of bacteria. As shown in FIG. 25, it can be seen that even if urine adheres to the surface of the urinal, the amount of NH ₄ adhered and the number of bacteria do not increase so much that the odor intensity is 2 or more as long as it is 2 hours or less.

  FIG. 26 is a diagram for explaining the change in pH over time when bacteria are added to urine. In FIG. 26, the horizontal axis represents elapsed time, and the vertical axis represents pH transition. As shown in FIG. 26, it can be seen that if the elapsed time is 2 hours or less, the pH does not become 8 or more, and as described with reference to FIG. 22, no significant increase in odor intensity is observed.

  As described with reference to FIGS. 22 to 26, it is understood that the sealing water by urine is suppressed to pH 4 or less, and the suppression timing is preferably about every 2 hours.

  Returning to FIG. 19, the description of step S03 will be continued. If the average room temperature is 25 ° C. or higher and 2 hours have not passed since the previous bowl sterilization, the timing of the sterilization operation is not reached, so the process shifts to “standby mode” and returns. If the average room temperature is 25 ° C. or higher and 2 hours have passed since the previous bowl sterilization, the process proceeds to step S04.

  On the other hand, in step S11, which is a process when the average room temperature is not 25 ° C. or higher, the CPU 211 determines whether or not 3 hours have elapsed since the previous bowl sterilization. This is because if the average room temperature is not 25 ° C. or higher and 3 hours have not passed since the previous bowl sterilization, the propagation of the bacteria is not so much. If the average room temperature is not 25 ° C. or more and 3 hours have not passed since the previous bowl sterilization, the timing of the sterilization operation is not reached, so the process shifts to “standby mode” and returns. If the average room temperature is not 25 ° C. or higher and 3 hours have passed since the previous bowl sterilization, the process proceeds to step S04.

  In step S04, the CPU 211 energizes the electrolysis unit 213 and starts generating hypochlorous acid. In step S05 following step S04, the CPU 211 determines whether there are 10 or more users. When the number of users exceeds a certain number, the sealed water in the trap unit 30 is replaced with new urine, and it is considered that the propagation of the bacteria has not progressed so much. On the other hand, it is assumed that urine scatters and adheres on the side of the standing wall 104 of the bowl 103, and can become a hotbed for bacterial growth. Therefore, if the number of users is 10 or more, the process proceeds to step S12. If the number of users is not 10 or more, the process proceeds to step S06.

  In step S12, the CPU 211 executes the “bowl portion sterilization mode 3”. In step S13 following step S12, a 10-minute interval is set after execution of “bowl portion sterilization mode 3”, and “bowl portion drying mode” is executed for 10 minutes. During execution of the “bowl portion drying mode”, the warning lamp 220 is turned on.

  In step S06, the CPU 211 determines whether or not there are zero users. This is because if the number of users is zero, there is a high possibility that the stain has progressed. If the number of users is zero, the process proceeds to step S07. If the number of users is not zero, the process proceeds to step S14.

  In step S07, the CPU 211 determines whether 8 hours have elapsed since the last bowl part sterilization. This is because if there are no users and 8 hours have passed since the last bowl sterilization, it is a low-frequency use time zone such as at night, and there is a possibility that the propagation of bacteria will proceed. If 8 hours have not elapsed since the last bowl part sterilization, the process returns. If 8 hours have passed since the last bowl part sterilization, the process proceeds to step S08.

  In step S08, the CPU 211 executes the “bowl part sterilization mode 3”. After that, the bowl part is not sterilized until it is used.

  In step S09 following step S08, an interval of 10 minutes after execution of “bowl portion sterilization mode 3” is set, and “bowl portion drying mode” is executed for 30 minutes. During execution of the “bowl portion drying mode”, the warning lamp 220 is turned on.

  In step S14, the CPU 211 determines whether there are three or less users. If the number of users is three or less, the process proceeds to step S15. If the number of users is not three or less, the process proceeds to step S18.

  In step S <b> 15, the CPU 211 determines whether or not the previous bowl part sterilization was execution of the “bowl part sterilization mode 1”. This is because if the “bowl part sterilization mode 1” in which the liquid agent is not supplied to the center of the bowl part 103 is continued, a large amount of bacteria may grow in the center part or the upper part of the bowl part 103. If the previous bowl part sterilization is the execution of “bowl part sterilization mode 1”, the process proceeds to step S18. If the previous bowl part sterilization is not the execution of “bowl part sterilization mode 1”, the process proceeds to step S16.

  In step S <b> 16, the CPU 211 executes “bowl portion sterilization mode 1”. In step S17 following step S16, an interval of 10 minutes is set after execution of “bowl portion sterilization mode 1”, and “bowl portion drying mode” is executed for 10 minutes. During execution of the “bowl portion drying mode”, the warning lamp 220 is turned on.

  In step S18, the CPU 211 executes the “bowl part sterilization mode 2”. In step S19 following step S18, an interval of 10 minutes is set after execution of “bowl portion sterilization mode 2”, and “bowl portion drying mode” is executed for 10 minutes. During execution of the “bowl portion drying mode”, the warning lamp 220 is turned on.

  Subsequently, a control operation in the urinal US of the present embodiment will be described with reference to FIG. FIG. 20 is a flowchart showing a control operation in trap sterilization of the urinal US. The urinal US of the present embodiment includes the “standby mode”, “bowl sterilization mode 1”, “bowl sterilization mode 2”, “bowl sterilization mode 3”, “trap blockage mode”, “gradual dissolution mode”, and “trap replacement mode”. "Drain pipe sterilization mode" and "Bowl portion drying mode" are appropriately combined and executed in consideration of the usage status and the propagation status of the bacteria.

  In step S31, the CPU 211 determines whether or not the urinal US is being used. The CPU 211 determines that the urinal US is in use if the human body detection signal is output from the human body detection sensor 102, and the urinal US is not in use if the human body detection signal is not output from the human body detection sensor 102. Judge. If it is determined that the urinal US is in use, the process proceeds to step S36. If it is determined that the urinal US is not in use, the process proceeds to step S32.

  In step S36, the CPU 211 forcibly executes the “standby mode”. If the urinal US is in use, the water discharged from the nozzle unit 202 is applied to the user, and therefore, in order to avoid such a situation, the “standby mode” in which the cleaning and sterilization operation is not performed is executed.

  In step S32, the CPU 211 determines whether or not the average room temperature for the last two hours is 25 ° C. or higher. If the average room temperature is 25 ° C. or higher, the growth of bacteria is promoted, and therefore, the treatment is performed to increase the sterilization frequency. In the present embodiment, the determination is made based on the average room temperature, but it is also preferable to use, for example, whether or not it is summer season as a determination criterion. If the average room temperature is 25 ° C. or higher, the process proceeds to step S33, and if the average room temperature is not 25 ° C. or higher, the process proceeds to step S37.

  In step S33, the CPU 211 determines whether or not the non-use time is two days. This is because sterilization of the trap unit 30 does not need to consider scattering of urine, and therefore it is sufficient to consider only the non-use time. If the non-use time is 2 days, the process proceeds to step S40, and if the non-use time is not 2 days, the process proceeds to step S34.

  In step S37, the CPU 211 determines whether or not the non-use time is 3 days. If the non-use time is 3 days, the process proceeds to step S40. If the non-use time is not 3 days, the process proceeds to step S38.

  In step S40, the CPU 211 executes a “trap blockade mode”. In this case, the amount of discharged water is 50 cc.

  In step S34, the CPU 211 determines whether or not the non-use time is 4 days. If the non-use time is 4 days, the process proceeds to step S42. If the non-use time is not 4 days, the process proceeds to step S35.

  In step S38, the CPU 211 determines whether or not the non-use time is 5 days. If the non-use time is 5 days, the process proceeds to step S42. If the non-use time is not 5 days, the process proceeds to step S39.

  In step S40, the CPU 211 executes a “gradual dissolution mode”. In this case, the amount of discharged water is 100 cc.

  In step S35, the CPU 211 determines whether or not the non-use time is 6 days. If the non-use time is 6 days, the process proceeds to step S44. If the non-use time is not 4 days, the process returns.

  In step S39, the CPU 211 determines whether the non-use time is 7 days. If the non-use time is 7 days, the process proceeds to step S44. If the non-use time is not 7 days, the process returns.

  In step S40, the CPU 211 executes a “trap replacement mode”. In this case, the amount of discharged water is 250 cc.

  Subsequently, a control operation in the urinal US of the present embodiment will be described with reference to FIG. FIG. 21 is a flowchart showing a control operation in sterilization of the drain pipe of the urinal US. The urinal US of the present embodiment includes the “standby mode”, “bowl sterilization mode 1”, “bowl sterilization mode 2”, “bowl sterilization mode 3”, “trap blockage mode”, “gradual dissolution mode”, and “trap replacement mode”. "Drain pipe sterilization mode" and "Bowl portion drying mode" are appropriately combined and executed in consideration of the usage status and the propagation status of the bacteria.

  In step S61, the CPU 211 determines whether or not one month has passed since the previous drain pipe cleaning. This is because the sterilization of the drain pipe WT does not need to consider the scattering of urine, so that it is sufficient to consider only the cleaning interval. If one month has passed since the drain pipe cleaning, the process proceeds to step S62, and if one month has not passed since the drain pipe cleaning, the process returns.

  In step S62, the CPU 211 determines whether or not the liquid agent tank 212 is full. If the liquid tank 212 is full, the process proceeds to step S63. If the liquid tank 212 is not full, the process proceeds to step S67.

  In step S63, the CPU 211 turns on the warning lamp 220 and notifies that the drain pipe cleaning is to be performed. In step S67, the CPU 211 turns on the warning lamp 220, prompts water injection into the liquid agent tank 212, and notifies the drain pipe cleaning.

  In step S64, the CPU 211 determines whether or not the operation switch 218 is operated. If the operation switch 218 has not been operated, the process returns. If the operation switch 218 has been operated, the process proceeds to step S65.

  In step S65, the CPU 211 energizes the electrolysis unit 213 and starts generating hypochlorous acid.

  In step S66 following step S65, the CPU 211 executes the “drainage sterilization mode”. The CPU 211 energizes the electrolysis unit 213 to generate water containing hypochlorous acid. For slow dissolution control, water is discharged for 15 seconds, and a total of 500 cc (50 cc is discharged 10 times) is released at 30 second intervals.

  Next, a first modification of the trap unit in the present embodiment will be described with reference to FIG. FIG. 27 is a schematic cross-sectional view showing the configuration of a modified trap unit 30A. FIG. 27A shows an initial state before the medicine 304A is dissolved, and FIG. 27B shows the medicine 304A. Shows a state where is completely melted.

  As shown in FIG. 27A, the trap unit 30A includes a container 301 and a cover 302A. The container 301 has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Therefore, the bottom 301b and the side 301a make the container 301 into a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing liquid therein. A plurality of outlet portions 301c are formed at an upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301 are communicated with each other by the outlet portions 301c.

  A cover 302 </ b> A is provided above the container 301. The cover 302A includes an inclined wall 302aA, an inlet portion 302bA, a cylindrical partition wall 302cA, and a lower inclined wall 302dA. The inclined wall 302aA is inclined toward the inlet portion 302bA opened at the lower portion. The cylindrical partition wall 302cA extends from the outer edge of the inlet portion 302bA to the side opposite to the inclined wall 302aA. A downwardly inclined wall 302dA provided so as to spread downward from the inlet portion 302bA is provided below the inlet portion 302bA.

  A drug holder 311A extends from the bottom 301b of the container 301 toward the cover 302A. The medicine holder 311A is formed so as to protrude inside the cylindrical partition wall 302cA.

  The medicine holder 311A has a float holding part 313A and a medicine holding part 312A. The medicine holding unit 312A is formed to hold a cylindrical medicine 304A. A float hold unit 313A is provided below the medicine hold unit 312A. The float hold unit 313A is a part that holds the float 310A. A liquid inflow port 314A is formed on the upper end side of the float hold part 313A.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30A and is collected at the inlet 302bA by the inclination of the inclined wall 302aA on the upper surface. The collected urine flows from the inlet portion 302bA into the cylindrical partition wall 302cA.

  The urine that has flowed into the cylindrical partition wall 302cA directly hits the drug 304A disposed below, and the drug 304A is dissolved by contact with urine. Urine is further stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows from the inlet portion 302bA, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid medicine 304A is configured to decrease in volume with use. When the volume reduction proceeds and the drug 304A disappears, the float 310A rises and closes the inlet portion 302bA (see FIG. 27B). When the inlet 302bA is thus blocked, urine cannot flow into the trap unit 30A, and urine stays in the bowl 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. Also, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishment, prevents the urine in which the medicine 304A is not dissolved from flowing into the drain pipe WT, and prevents the drain pipe WT from flowing. Protection can be achieved.

  Next, a second modification of the trap unit in the present embodiment will be described with reference to FIG. 28 is a schematic cross-sectional view showing a configuration of a modified trap unit 30B. FIG. 28 (A) shows an initial state before the medicine 304B is melted, and FIG. 28 (B) shows the medicine 304B. Shows a state where is completely melted.

  As shown in FIG. 28A, the trap unit 30B includes a container 301 and a cover 302A. The container 301 has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Therefore, the bottom 301b and the side 301a make the container 301 into a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing liquid therein. A plurality of outlet portions 301c are formed at an upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301 are communicated with each other by the outlet portions 301c.

  A cover 302B is provided above the container 301. The cover 302B includes an inclined wall 302aB, an inlet portion 302bB, a cylindrical partition wall 302cB, and a lower protrusion 302dB. The inclined wall 302aB is inclined toward the inlet portion 302bB opened at the lower portion. The cylindrical partition wall 302cB extends from the outer side of the outer edge of the inlet portion 302bB to the side opposite to the inclined wall 302aB. Below the inlet portion 302bB, a lower protrusion 302dB is provided so as to extend vertically downward from the inlet portion 302bB. A plurality of lower protrusions 302 dB are provided so as to surround the inlet portion 302 b B, and a gap 302 e B is provided between the adjacent lower protrusions 302 dB.

  A medicine holder 311B extends from the bottom 301b of the container 301 toward the cover 302B. The medicine holder 311B is formed so as to face the inside of the cylindrical partition wall 302cB.

  The medicine holder 311B has a float hold part 313B and a medicine hold part 312B. The medicine holding unit 312B is formed to hold a cylindrical medicine 304B. A float hold unit 313B is provided below the medicine hold unit 312B. The float hold unit 313B is a part that holds the float 310B.

  A through hole 304aB is provided near the center of the medicine 304B. The float 310B has a connecting rod 315B for connecting to the lid 316B. The connecting rod 315B is disposed so as to pass through the through hole 304aB of the medicine 304B. The lid 316B is disposed so as to be surrounded by the lower protrusion 302dB.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30B and is collected in the inlet 302bB by the inclination of the inclined wall 302aB on the top surface. The collected urine flows from the inlet portion 302bB into the space surrounded by the lower protrusion 302dB, and flows into the cylindrical partition wall 302cB from the gap 302eB.

  The urine that has flowed into the cylindrical partition wall 302cB directly hits the drug 304B disposed below, and the drug 304B is dissolved by contact with the urine. Urine is further stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows from the inlet portion 302bB, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a is pushed out. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid medicine 304B is configured to decrease in volume with use. When this volume reduction progresses and the drug 304B disappears, the float 310B rises, and the inlet 302bB is blocked by the lid 316B (see FIG. 28B). When the inlet 302bB is thus closed, urine cannot flow into the trap unit 30B, and urine stays in the bowl 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishing the medicine, and prevents the urine in which the medicine 304B is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Subsequently, a third modification of the trap unit in the present embodiment will be described with reference to FIG. 29 is a schematic cross-sectional view showing the configuration of a modified trap unit 30C. FIG. 29A shows an initial state before the medicine 304C is melted, and FIG. 29B shows the medicine 304C. Shows a state where is completely melted.

  As shown in FIG. 29A, the trap unit 30C includes a container 301 and a cover 302C. The container 301 has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Therefore, the bottom 301b and the side 301a make the container 301 into a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing liquid therein. A plurality of outlet portions 301c are formed at an upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301 are communicated with each other by the outlet portions 301c.

  A cover 302 </ b> C is provided above the container 301. The cover 302C includes an inclined wall 302aC, an inlet portion 302bC, a cylindrical partition wall 302cC, and a lower horizontal wall 302dC. The inclined wall 302aC is inclined toward the inlet portion 302bC opened at the lower portion. The cylindrical partition wall 302cC extends from the outer side of the outer edge of the inlet portion 302bC to the side opposite to the inclined wall 302aC. A lower horizontal wall 302dC is provided substantially horizontally from the inlet 302bC toward the cylindrical partition wall 302cC.

  A drug holder 312C extends from the bottom 301b of the container 301 toward the cover 302C. The medicine holder 312C is formed so as to protrude inside the cylindrical partition wall 302cC.

  A connecting rod 315C for connecting the lid portion 316C and the drug placement portion 314C through the inlet portion 302bC is provided. The lid portion 316C is arranged to be positioned above the inlet portion 302bC. A liquid inflow port 313C is formed in the medicine placement unit 314C.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30C and is collected at the inlet 302bC by the inclination of the inclined wall 302aC on the top surface. Then, the collected urine flows from the inlet portion 302bC into the cylindrical partition wall 302cC.

  The urine that has flowed into the cylindrical partition wall 302cC is stored in the storage chamber 301d. The urine stored in the storage chamber 301d flows from the liquid inflow port 313C to the medicine 304C side. The drug 304C is dissolved by contact with urine. Urine is further stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet portion 302bC, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a is pushed out. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid drug 304C is configured to decrease in volume with use. When this volume reduction proceeds and the medicine 304C disappears, the lid 316C, the medicine placement part 314C, and the connecting rod 315C are integrally lowered, and the inlet part 302bC is closed by the lid 316C (FIG. 29B). )reference). When the inlet 302bC is thus closed, urine cannot flow into the trap unit 30C, and the urine stays in the bowl 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishing the medicine, and prevents the urine in which the medicine 304C is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Then, the 4th modification of the trap unit in this embodiment is demonstrated, referring FIG. FIG. 30 is a schematic cross-sectional view showing a configuration of a trap unit 30D which is a modified example. FIG. 30A shows an initial state before use, and FIG. 30B shows a state during urination. .

  The trap unit 30D is obtained by adding an inflow regulating float 320D to the trap unit 30C described with reference to FIG. Therefore, the description of portions common to the trap unit 30C is omitted.

  In the unused state, the inflow regulating float 320D is in contact with the lower horizontal wall 302dC so as to close the inlet portion 302bC as shown in FIG.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30D and is collected in the inlet 302bC by the inclination of the inclined wall 302aC on the top surface. Then, the collected urine pushes down the inflow regulating float 320D by its own weight, and flows into the cylindrical partition wall 302cC from the inlet portion 302bC (see FIG. 30B).

  The urine that has flowed into the cylindrical partition wall 302cC is stored in the storage chamber 301d. The urine stored in the storage chamber 301d flows from the liquid inflow port 313C to the medicine 304C side. The drug 304C is dissolved by contact with urine. Urine is further stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet portion 302bC, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a is pushed out. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid drug 304C is configured to decrease in volume with use. When the volume reduction proceeds and the drug 304C disappears, the lid 316C, the drug placement unit 314C, and the connecting rod 315C are integrally lowered, and the inlet 302bC is blocked by the lid 316C. When the inlet 302bC is thus closed, urine cannot flow into the trap unit 30D, and urine stays in the bowl 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishing the medicine, and prevents the urine in which the medicine 304C is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Next, a fifth modification of the trap unit in the present embodiment will be described with reference to FIG. FIG. 31 is a schematic cross-sectional view showing a configuration of a trap unit 30E which is a modified example.

  As shown in FIG. 31, the trap unit 30E includes a container 301 and a cover 302E. The container 301 has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Therefore, the bottom 301b and the side 301a make the container 301 into a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing liquid therein. A plurality of outlet portions 301c are formed at an upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301 are communicated with each other by the outlet portions 301c.

  A cover 302E is provided above the container 301. The cover 302E includes an inclined wall 302aE, an inlet portion 302bE, and a cylindrical partition wall 302cE. The inclined wall 302aE is inclined toward the inlet portion 302bE opened at the lower portion. The cylindrical partition wall 302cE extends from the outer edge of the inlet portion 302bE to the side opposite to the inclined wall 302aE.

  A socket 309E is inserted into the cylindrical partition wall 302cE from below. The socket 309E has a bottom portion 309dE and a cylindrical portion 309eE. The bottom 309dE is formed so as to close the lower end of the cylindrical partition wall 302cE. The cylindrical portion 309eE is formed so as to extend from the outer edge of the bottom portion 309dE to one side, and is disposed along the inner side of the cylindrical partition wall 302cE. A small-diameter channel 309bE is provided so as to penetrate substantially the center of the bottom 309dE.

  A space surrounded by the cylindrical portion 309eE is configured as a large-diameter channel 309cE, and is connected to the storage chamber 301d through the small-diameter channel 309bE. A packing 308E is interposed between the socket 309E and the cylindrical partition wall 302cE.

  In addition to the socket 309E, an inlet closing valve 303E, a medicine 304E, a pedestal 305E, and a spring 306E are arranged inside the cylindrical partition wall 302cE.

  The pedestal 305E is placed on the upper end of the socket 309E so as to cover the large-diameter channel 309cE from above. The pedestal 305E is provided with an upper protrusion 305bE near the center. The upper protrusion 305bE is a cylindrical protrusion toward the inlet portion 302bE. The medicine holding rod 303bE of the inlet blocking valve 303E passes through the upper protrusion 305bE. A gap is formed between the upper protrusion 305bE and the medicine holding rod 303bE, and a communication path 305aE is formed.

  An inlet closing valve 303E is disposed above the pedestal 305E. The inlet closing valve 303E includes a valve portion 303aE and a medicine holding rod 303bE. A spring 306E is disposed between the base 305 and the valve portion 303aE. As the spring 306E expands and contracts, the valve portion 303aE can slide up and down with respect to the base 305E. In a state where no external force is applied, the spring 306 abuts the valve portion 303aE on the lower surface near the inlet portion 302bE and shields the inlet portion 302bE.

  The chemical | medical agent 304E is attached to the chemical | medical agent holding rod 303bE, and is arrange | positioned inside the large diameter flow path 309cE of the socket 309E under the base 305E.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30E and is collected at the inlet 302bE by the inclination of the inclined wall 302aE on the upper surface. The collected urine is stored on the inlet closing valve 303E.

  When a predetermined amount of urine is stored on the inlet blocking valve 303E, the inlet blocking valve 303E is pushed down against the biasing force of the spring 306E due to its weight. As a result, the inlet portion 302bE is released, and the stored urine flows into the cylindrical partition wall 302cE. The urine that has flowed into the cylindrical partition wall 302cE passes through the communication path 305aE of the pedestal 305E, and reaches the medicine 304E that is disposed below it. Drug 304E dissolves upon contact with urine. The urine further reaches the small-diameter channel 309bE below the medicine 304E. Urine flows through the small-diameter channel 309bE, is discharged from the socket 309E, and is stored in the storage chamber 301d.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet sealing valve 303E, so that the urine stored in the storage chamber 301d until then is pushed out so as to be pushed out of the side portion 301a. It is discharged from the outlet 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid medicine 304E is configured to decrease in volume with use. When the drug 304E disappears due to this volume reduction, even if urine accumulates on the inlet blocking valve 303E, the biasing force of the spring 306E wins and the inlet blocking valve 303E does not descend. As a result, new urine cannot enter the storage chamber 301d from the inlet 302bE, and urine delivery from the trap unit 30E to the drain pipe WT is restricted.

  Thus, urine stays in the bowl part 103 of the urinal body 10 because urine cannot flow into the trap unit 30E. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishing the medicine, and prevents the urine in which the medicine 304E is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Next, a sixth modification of the trap unit in the present embodiment will be described with reference to FIG. FIG. 32 is a schematic cross-sectional view showing a configuration of a trap unit 30F which is a modified example.

  As shown in FIG. 32, the trap unit 30F includes a container 301F and a cover 302F. The container 301F has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Accordingly, the bottom portion 301b and the side portion 301a make the container 301F have a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing a liquid therein. A plurality of outlet portions 301c are formed in the upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301F are communicated with each other by the outlet portions 301c. A disk member 320F is disposed on the lower inner side of the outlet portion 301c so as to contact the inner wall of the side portion 301a. A communication hole 320aF is formed in the disk member 320F.

  A cover 302F is provided above the container 301F. The cover 302F includes an inclined wall 302aF, an inlet portion 302bF, a cylindrical partition wall 302cF, and a lower inclined wall 302dF. The inclined wall 302aF is inclined toward the inlet portion 302bF opened at the lower portion. The cylindrical partition wall 302cF extends from the outer edge of the inlet portion 302bF to the side opposite to the inclined wall 302aF. A downwardly inclined wall 302dF is provided below the inlet portion 302bF so as to spread downward from the inlet portion 302bF.

  A medicine 304F is disposed below the communication hole 320aF. A float 310F is disposed in a recess 304aF provided at the lower end of the medicine 304F.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30F and is collected in the inlet 302bF by the inclination of the inclined wall 302aF on the upper surface. The collected urine flows from the inlet portion 302bF into the cylindrical partition wall 302cF.

  The urine that has flowed into the cylindrical partition wall 302cF is stored in the storage chamber 301d. The urine stored in the storage chamber 301d comes into contact with the medicine 304F arranged in the storage chamber 301d, and the medicine 304F is dissolved by contact with urine.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet portion 302bF, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a is pushed out. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid medicine 304F is configured to decrease in volume with use. When this volume reduction proceeds and the drug 304F disappears, the float 310A rises and closes the communication hole 320aF. When the communication hole 320aF is thus closed, urine cannot flow into the trap unit 30F, and urine stays in the bowl portion 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. In addition, the cleaning operator or the like is made aware that it is time to replace the medicine for replenishment, and prevents the urine in which the medicine 304F is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  Next, a seventh modification of the trap unit in the present embodiment will be described with reference to FIG. FIG. 33 is a schematic cross-sectional view showing a configuration of a trap unit 30G which is a modified example.

  As shown in FIG. 33, the trap unit 30G includes a container 301F and a cover 302F. The container 301F has a side portion 301a and a bottom portion 301b. The bottom 301b is a circular plate portion. The side portion 301a is a cylindrical portion formed so as to rise in one direction from the outer periphery of the bottom portion 301b. Accordingly, the bottom portion 301b and the side portion 301a make the container 301F have a bottomed cylindrical shape and constitute a storage chamber 301d capable of storing a liquid therein. A plurality of outlet portions 301c are formed in the upper portion of the side portion 301a at intervals in the circumferential direction, and the inside and outside of the container 301F are communicated with each other by the outlet portions 301c. A disk member 320F is disposed on the lower inner side of the outlet portion 301c so as to contact the inner wall of the side portion 301a. A communication hole 320aF is formed in the disk member 320F.

  A cover 302F is provided above the container 301F. The cover 302F includes an inclined wall 302aF, an inlet portion 302bF, a cylindrical partition wall 302cF, and a lower inclined wall 302dF. The inclined wall 302aF is inclined toward the inlet portion 302bF opened at the lower portion. The cylindrical partition wall 302cF extends from the outer edge of the inlet portion 302bF to the side opposite to the inclined wall 302aF. A downwardly inclined wall 302dF is provided below the inlet portion 302bF so as to spread downward from the inlet portion 302bF.

  A medicine 304G is disposed below the communication hole 320aF. A connecting rod 315G for connecting the lid portion 316G and the drug placement portion 314G through the communication hole 320aF is provided. The lid 316G is disposed so as to be positioned above the communication hole 320aF. The medicine placement unit 314G is placed on the medicine 304G.

  The urine discharged from the bottom opening 106 of the urinal US reaches the trap unit 30F and is collected in the inlet 302bF by the inclination of the inclined wall 302aF on the upper surface. The collected urine flows from the inlet portion 302bF into the cylindrical partition wall 302cF.

  The urine that has flowed into the cylindrical partition wall 302cF is stored in the storage chamber 301d. The urine stored in the storage chamber 301d comes into contact with the medicine 304G disposed in the storage chamber 301d, and the medicine 304G is dissolved by contact with urine.

  When the inside of the storage chamber 301d is filled with urine, new urine flows in from the inlet portion 302bF, so that the urine stored in the storage chamber 301d is pushed out so that the outlet of the side portion 301a is pushed out. It is discharged from the part 301c. The urine discharged from the outlet 301c flows outside the container 301 and reaches the drain pipe WT.

  The solid drug 304G is configured to decrease in volume with use. When this volume reduction progresses and the drug 304G disappears, the lid 316G, the drug placement unit 314G, and the connecting rod 315G are integrally lowered, and the lid 316G closes the communication hole 320aF. When the communication hole 320aF is thus closed, urine cannot flow into the trap unit 30G, and urine stays in the bowl portion 103 of the urinal body 10. For this reason, the user who has seen the urine stay in the bowl portion 103 can recognize that the urinal US is in a state in which urine cannot flow, and therefore refrain from using the urinal US. The deterioration of hygiene can be avoided. Also, the cleaning worker or the like is made aware that it is time to replace the medicine for replenishment, and prevents the urine in which the medicine 304G is not dissolved from flowing into the drain pipe WT. Protection can be achieved.

  In the above-described embodiment, the system in which the trap unit 30 and the like can be replaced has been described. However, even when the trap cannot be replaced, the apparatus to which the idea of the present invention is applied is preferably used. For example, an arrangement in which a medicine and a flow path closing float are integrally disposed below an existing eye plate is conceivable. If the drug disappears by use, the float rises and closes the inlet of the eye plate.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

US: urinal 10: urinal body 101: nozzle cover 102: human body detection sensor 103: bowl 104: standing wall 105: bottom 106: bottom opening 20: hygiene maintenance device 201: control unit 202: nozzle unit (liquid agent) Discharge means)
202a: Mist nozzle for bowl 202b: Mist nozzle for bowl 202c: Mist nozzle for bowl 202d: Liquid nozzle for trap 203: Bowl drying fan 211: CPU (control means)
212: Liquid agent tank 213: Electrolytic unit 214: Electric pump 215: Flow path switching valve 216: Water level sensor 217: Temperature sensor 218: Operation switch 219: Power connector 220: Warning lamp 221: Lid 30: Trap unit 301: Container 301a: Side part 301b: Bottom part 301c: Outlet part 301d: Reservoir chamber 302: Cover 302a: Inclined wall 302b: Inlet part 302c: Cylindrical partition wall 303: Inlet block valve 304: Drug 304a: First drug 304b: Second drug 305: Base 305a: Communication path 306: Spring 307: Communication port blocking valve 307a: Communication path 308: Packing 309: Socket 309a: Protrusion 309b: Small diameter channel 309c: Large diameter channel 309d: Bottom 309e: Cylindrical portion

Claims (9)

A urinal that suppresses backflow of odor from the drainage pipe by sealing water and maintains hygiene by means of chemicals,
A bowl portion having a standing wall portion facing the user and a bottom surface portion for guiding urine received by the standing wall portion to a drain port;
A trap unit that has an inlet portion for allowing urine discharged from the drainage port to flow into the interior and a reservoir portion for storing urine that has flowed from the inlet portion to form sealed water,
The trap unit is
A medicine that functions to suppress the generation of ammonia odor and urine stone from urine as a source is arranged in the reservoir, and is configured to be able to replenish the medicine in the reservoir.
Furthermore, the urinal is characterized by having urine delivery regulating means for regulating urine delivery from the trap unit to the drain pipe when the remaining amount of the medicine becomes a predetermined amount or less. The trap unit is
Having a drug mounting member mounted with the drug and functioning as the urine delivery regulating means;
2. The urinal according to claim 1, wherein the urinal is configured so that the medicine can be replenished to the reservoir by exchanging the entire trap unit or the medicine mounting member. The trap unit is
Configured to reduce the volume of the drug by influx of urine,
Further, when the amount of decrease in the volume of the drug from the start of the use of the drug becomes a predetermined amount or more, the urine is restricted from being sent from the trap unit to the drain pipe, and the urine is retained in the bowl portion. The urinal according to claim 2, wherein the urinal is configured. The said trap unit is comprised so that the flow volume of the urine which can flow out to the said drain pipe from the said bowl part through the said trap unit will be reduced, if the volume of the said chemical | medical agent reduces. Urinal as described in. After the amount of decrease in the volume of the drug from the start of use of the drug becomes a predetermined amount or more, the trap unit flows out into the drain pipe with respect to the degree of decrease in the volume of the drug than before. 5. A urinal according to claim 4, wherein the urinal is configured to reduce the degree of possible urine flow rate . The drug is composed of a first material and a second material, and the dissolution rate in urine is higher in the second material than in the first material,
The trap unit is
A first step of preferentially dissolving the first material over the second material and a second step of preferentially dissolving the second material over the first material;
The first stage is executed from the start of use of the medicine until the volume reduction amount of the medicine reaches a predetermined amount, and the second stage is executed subsequent to the first stage,
In the second stage, the degree of the flow rate of urine that can flow out to the drain pipe is made smaller with respect to the degree of decrease in the volume of the medicine than in the first stage. The urinal according to claim 5. The trap unit is configured to close an opening of the inlet portion when a decrease amount of the volume of the medicine from the start of use of the medicine becomes a predetermined amount or more. 4. The urinal according to 4. The said trap unit is comprised so that the flow volume of the urine which can flow out into the said drain pipe before the all the said chemical | medical agents melt | dissolve is made into the minimum. The urinal described. The trap unit has a lid member that opens at least a part of the entrance when the urinal is used, and closes the entrance when the urinal is not used.
The urinal according to claim 4, wherein the lid member is formed integrally with the medicine, and when the volume of the medicine is reduced, the flow rate of urine that can flow out to the drain pipe is reduced.

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