JP2019065566A - urinal - Google Patents

Abstract

To provide a urinal capable of preventing vain consumption of washing water caused by continuation of water discharge because of a detection sensor being incapable of detecting a non-detection state.SOLUTION: A urinal comprises: a urinal body; a water discharge unit 30 for discharging washing water onto a bowl surface; a detection sensor 44 for detecting the presence/absence of a user using the urinal body or a urine flow of urine discharged into the urinal body by the user; valve devices 28, 36 for opening/closing a water supply passage to the water discharge unit; and a control unit 46 for controlling water discharge of the washing water discharged from the water discharge unit. The control unit 46 is configured to execute a urine dilution water discharge mode in which water is discharged from the water discharge unit while the detection sensor 44 is in a detection state and a real washing water discharge mode in which water is discharged from the water discharge unit at a flow rate of the discharged water larger than that of the discharged water in the urine dilution water discharge mode after the detection sensor's detection state terminates. The control unit 46 controls the valve device 36 so that the water discharge is made to be terminated after the lapse of a predetermined period of time after the start of the water discharge in the urine dilution water discharge mode.SELECTED DRAWING: Figure 9

Description

  TECHNICAL FIELD The present invention relates to a urinal, and more particularly to a urinal that cleans a bowl surface with discharged flush water.

  Conventionally, as described in Patent Document 1, in the urinal, preliminary cleaning is performed to wet the entire surface of the inner surface of the toilet from the detection start of the human body detection sensor, and after the preliminary cleaning, the human body detection sensor does not detect In order to prevent odor from rising up from inside the toilet during the urination operation until it becomes constant, the flush water with a constant flow rate is spouted, and furthermore, after the human body detection sensor is not detected, flush water is used as the main flush at high flow rate. It is known that the spouted water and the main flush discharge flush the inner surface of the toilet and replace the urine in the drainage trap.

Japanese Patent Application Laid-Open No. 63-22931 JP, 2012-149415, A

Yosuke Fujioka, Nobuhiro Umeda, Hachinohe Institute of Technology: Configuration of feature quantity extraction system for classification of urine flow curve pattern, The 250th Annual Conference of the Society of Automated Control Engineers of Japan, Material No. 250-5 (2009.6.19)

  However, in the urinal described in Patent Document 1 described above, spouting of washing water is continued until the human body detection sensor is not detected. Therefore, immediately before the user is in the non-detection state, water is discharged even though the urination has already been completed, and the washing water is wastefully consumed until the human detection sensor is in the non-detection state. There was a problem. With the recent demand for saving water for washing water, it has been considered as an issue to suppress wasteful consumption of washing water in a urinal.

  Further, as described in Patent Document 2, there is also known a urinal including a urine detection sensor that detects a urine movement by a flow of urine, and an adjustment unit that adjusts water supply to a bowl portion. However, when a urine detection sensor for detecting urine flow is employed, urine dilution spout is performed during urination, so it is difficult to distinguish between urine flow and urine dilution spout, and the end of urine flow is appropriately detected (urine There is a risk that the detection sensor can not be detected). If it is not possible to properly detect the end of the urine flow, urine dilution spouting can not be terminated, and spouting continues indefinitely, resulting in the problem of wasting the flush water.

  Therefore, the present invention has been made to solve the problems and problems of the prior art described above, and prevents wasteful consumption of cleaning water by continuing water discharge without the detection sensor being able to detect the non-detection state. The purpose is to provide a urinal that can.

In order to achieve the above-mentioned object, the present invention is a urinal for washing a bowl surface with discharged flush water, which forms the bowl surface to receive urination and forms a drainage port at the bottom thereof. And a urinal body provided with a drainage trap in communication with the drainage port of the bowl portion, a water discharge portion for discharging flush water to the bowl surface, and presence or use of a user using the urinal body A detection sensor for detecting the urine flow excreted by the person urinating to the urinal body, a valve device for opening and closing the water supply passage to the water discharger, and a control unit for controlling the spouting of washing water from the water discharger. The controller controls the urine dilution spouting mode in which water is spouted from the water spouting unit while the detection sensor is in the detection state, and the discharge state of the urine dilution spouting mode after the detection state of the detection sensor is ended. Discharge larger than flow rate And the control unit is configured to execute spouting after a predetermined period of time has elapsed since the spouting in the urine dilution spouting mode is started. Control the above-mentioned valve device.
In the present invention configured as described above, a urine dilution water discharge mode in which the controller discharges water from the water discharger while the detection sensor is in the detection state, and a urine dilution after the detection state of the detection sensor is ended. The main flush discharge mode in which the spouting portion discharges water at a flow rate of the spouted water larger than the flow rate of the spouted water in the spouted water mode is executed. In such a case, the control unit controls the valve device so as to end the water discharge after a predetermined period has elapsed since the water discharge in the urine dilution water discharge mode is started. Therefore, according to the present invention, compared with the case where the water discharging in the urine dilution water discharging mode is ended when the detection sensor is in the non-detection state, the water discharging is surely performed after a predetermined period has elapsed after the water discharging in the urine dilution water discharging mode is started. It is possible to prevent the wasteful consumption of the washing water by continuing the water discharge without the detection sensor being able to detect the non-detection state.

In the present invention, preferably, the control unit detects the presence or absence of the user using the urinal body before the elapse of the predetermined period which is a fixed period after the water discharge in the urine dilution water discharge mode is started. The valve device is controlled so as to end the water discharge in the urine dilution water discharge mode when the detection sensor is not detected.
In the present invention configured as described above, the control unit detects the presence or absence of the user who uses the urinal body before a predetermined period, which is a fixed period, elapses from the start of water discharge in the urine dilution water discharge mode. The valve device is controlled so as to end the water discharge in the urine dilution water discharge mode when the detection sensor is in a non-detection state. Therefore, when the non-detection state is reached earlier than the predetermined period, the detection sensor does not detect the presence or absence of the user who uses the urinal body before the predetermined period has elapsed since the start of water discharge in the urine dilution water discharge mode. After the detection state, since the water discharge in the urine dilution water discharge mode is not continued, the amount of water discharged in the urine dilution water discharge mode can be reduced, and water saving can be achieved.

In the present invention, preferably, the control unit starts the spouting in the main flush spouting mode continuously with controlling the valve device to end the spouting in the urine dilution spouting mode. Control the device.
In the present invention configured as described above, the control unit starts the spouting in the main flush spouting mode continuously with controlling the valve device to end the spouting in the urine dilution spouting mode. Control the valve arrangement as described above. Therefore, the standby time between the water discharge in the urine dilution water discharge mode and the water discharge in the main flush water discharge mode can be continuously performed, and the water discharge in the main flush water discharge mode is ended at a relatively quick timing. The continuous use of the urinal can be improved.

In the present invention, preferably, the control unit is configured to terminate the water discharge after the predetermined period, which is a fixed period, has elapsed after the water discharge in the urine dilution water discharge mode is started by the detection sensor being in a detection state. The above detection that detects the presence or absence of the user who uses the urinal body after the first mode of the dilution spouting mode and the spouting of the urine dilution spouting mode is started by the detection sensor being in the detection state It is configured to be able to execute the second mode of the urine dilution water discharge mode in which water discharge is ended after the predetermined period elapses which is a variable period until the sensor is in a non-detection state, and the control unit It is comprised so that it can switch with the said 2nd mode.
In the present invention configured as described above, the control unit is configured to be able to switch between the first mode and the second mode. Thereby, depending on the installation location of the urinal body and the use condition thereof, it is possible to change the method of determining the predetermined period until the water discharge in the urine dilution water discharge mode is ended, achieving more water saving in the urine dilution water discharge mode can do.

In the present invention, preferably, the control unit detects the presence or absence of the user using the urinal body before the predetermined period elapses which is a fixed period of the first mode of the urine dilution water discharge mode. When the detection sensor is in the non-detection state, the second mode of the urine dilution water discharge mode is executed to control the valve device so as to end the water discharge in the urine dilution water discharge mode, and further, the urine dilution The valve device is controlled to start water discharging in the main flush water discharging mode, continuously with controlling the valve device to end water discharging in the water discharging mode.
In the present invention configured as described above, the control unit detects the presence or absence of the user using the urinal body before the predetermined period elapses which is the fixed period of the first mode of the urine dilution water discharge mode. When the sensor is in the non-detection state, the second mode of the urine dilution water discharge mode is executed to control the valve device to end the water discharge in the urine dilution water discharge mode, and the water discharge in the urine dilution water discharge mode is ended The valve device is controlled so as to start water discharge in the main flush water discharge mode continuously with controlling the valve device to cause the water discharge. Therefore, when the non-detection state is reached earlier than the predetermined period which is the fixed period of the first mode, the presence or absence of the user who uses the urinal body before the predetermined period elapses after the water discharge in the urine dilution water discharge mode is started is detected. Since the spouting in the urine dilution spouting mode is not continued after the detection sensor is in the non-detection state, the amount of water spouted in the urine dilution spouting mode can be reduced, and water saving can be achieved. Furthermore, in the first mode, spouting in the urine dilution spouting mode and spouting in the main flush spouting mode can be continuously performed so as to eliminate the waiting time, and spouting in the main flush spout mode is performed relatively quickly. The termination can improve the continuous usability of the urinal.

In the present invention, preferably, in the second mode of the urine dilution water discharge mode, the control unit detects water presence in the urine dilution water discharge mode and then detects the presence or absence of the user using the urinal body. When the abnormal diagnosis period elapses while the detection sensor continues the detection state, the water discharge in the urine dilution water discharge mode is ended.
In the present invention configured as described above, the control unit detects the presence or absence of the user who uses the urinal body after starting water discharge in the urine dilution water discharge mode in the second mode. When the abnormal diagnosis period passes while the detection state is continued, the water discharge in the urine dilution water discharge mode is ended. Therefore, an upper limit can be set to the continuation time of spouting in the urine dilution spouting mode, and wasteful consumption of cleaning water can be prevented.

  According to the urinal of the present invention, it is possible to prevent the wasteful consumption of washing water due to the fact that the detection sensor can not detect the non-detection state and the water discharge is continued.

A portion of the drainage trap pipeline of the urinal in a state before the user urinates is shown enlarged, and uristone is generated even in a very short time in an environment where organic matter contamination including biofilm is formed It is a figure explaining new findings. After the user urinates, it shows that urine is filled in the drainage trap pipeline until the urinal cleaning operation is performed, and it is extremely short in an environment where organic matter contamination including biofilm is formed. It is a figure explaining the new knowledge from which a urine stone generate | occur | produces even with time. The main cleaning operation of the urinal is performed, and the urine in the drainage trap pipeline shows a state of being replaced with new cleaning water, and even in a very short time in an environment where organic matter contamination including biofilm is formed. It is a figure explaining the new knowledge which a urine stone generate | occur | produces. After urinating by the user, the drainage trap pipeline shown in FIG. 1A is substantially filled with relatively high urine concentration wash water, and it is the same level in an environment where organic matter contamination including biofilm is formed. It is a figure explaining the new knowledge that a difference arises in the generation amount of urinary calculus due to the difference in the urine concentration of the flush water in the drainage trap pipeline and the horizontal draw pipe in the period b. FIG. 2B shows a state after the main cleaning operation is performed on the drainage trap pipeline shown in FIG. 2A, and in an environment in which organic matter contamination including a biofilm is formed, drainage trap pipeline and horizontal pulling in the same period It is a figure explaining the new knowledge that a difference arises in the amount of generation of a urine stone by the difference in the urine concentration of the washing water in piping. After urinating by the user, the drainage trap pipeline shown in FIG. 1A is substantially filled with the wash water having a relatively low urine concentration, and in the environment where the organic matter contamination including the biofilm is formed, the same degree is obtained. It is a figure explaining the new knowledge that a difference arises in the generation amount of urinary calculus due to the difference in the urine concentration of the flush water in the drainage trap pipeline and the horizontal draw pipe in the period b. FIG. 2C shows a state after the main cleaning operation is performed on the drainage trap pipeline shown in FIG. 2C, and in an environment in which organic matter contamination including a biofilm is formed, drainage trap pipeline and horizontal pulling in similar periods. It is a figure explaining the new knowledge that a difference arises in the amount of generation of a urine stone by the difference in the urine concentration of the washing water in piping. It is a figure which shows the thickness of the organic substance dirt with respect to the frequency | count of use for every urine concentration of the wash water in the drainage trap pipeline at the time of a user's urination. It is a figure which shows the mechanism of generation | occurrence | production of the organic substance dirt containing the biofilm in the drainage trap pipeline 14 shown to FIG. 1A. The drainage trap pipeline shown in FIG. 4A is substantially filled with the wash water having a relatively high urine concentration, and the difference in the urine concentration of the wash water in the drainage trap pipeline and the horizontal draw pipe causes the generation of urinary calculus The mechanism is different, and it is a figure explaining a new finding that a difference arises in the increase in thickness of organic matter dirt. When high pH environment arises in the drainage trap pipeline as shown to FIG. 4B, it is a figure explaining that the reaction which precipitates magnesium ammonium phosphate becomes dominant. It is a figure explaining the state to which the magnesium ammonium phosphate produced the comparatively large crystalline urolith of particle diameter by reaction as shown to FIG. 4C. The drainage trap pipeline shown in FIG. 4A is substantially filled with the wash water having a relatively low urine concentration, and due to the difference in the urine concentration of the wash water in the drainage trap pipeline and the horizontal draw pipe, the generation of urinary calculus The mechanism is different, and it is a figure explaining a new finding that a difference arises in the increase in thickness of organic matter dirt. It is a figure explaining that reaction which precipitates calcium phosphate becomes dominant in an environment where pH rise in drainage trap pipeline is controlled comparatively low as shown in Drawing 4E. It is a figure explaining the state which the calcium phosphate produced the comparatively small non-crystalline uristone of particle diameter by reaction as shown to FIG. 4F. 1 is a perspective view of a urinal according to a first embodiment of the present invention. 1 is a front view of a urinal according to a first embodiment of the present invention. It is sectional drawing seen along the VII-VII line of FIG. FIG. 1 is a plan view of a urinal according to a first embodiment of the present invention. FIG. 2 is a view showing a configuration of a toilet bowl automatic cleaning unit according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of a urinal spreader according to a first embodiment of the present invention. FIG. 1 is a side cross-sectional view of a urinal spreader according to a first embodiment of the present invention; FIG. 7 is a flow chart showing a control operation of a controller for each usage cycle when the user uses the urinal in the urinal according to the first embodiment of the present invention when the urine dilution water discharge mode is performed. In the urinal according to the first embodiment of the present invention, when discharging water in the urine dilution water discharging mode is started after a predetermined period has elapsed, the detection state of the detection sensor, the water discharging condition in the urine dilution water discharging mode, and main cleaning It is a figure which shows the time change of the water discharging state in water discharging mode. In the urinal according to the first embodiment of the present invention, in the case where the detection sensor is in the non-detection state before the predetermined period elapses from the start of water discharge in the urine dilution water discharge mode, the detection state of the detection sensor, in the urine dilution water discharge mode It is a figure which shows the time change of the water discharging state in the water discharging state and main washing water discharging mode. In the urinal according to the second embodiment of the present invention, a diagram showing a flowchart showing a control operation of the controller when switching to the control to execute the second mode from the control scheduled to execute the first mode of urine dilution water discharge mode is there. In the urinal according to the second embodiment of the present invention, when the controller is preset to execute the second mode of urine dilution spouting mode, the controller of the use cycle controller using the urinal It is a figure which shows the flowchart which shows control operation. In the urinal according to the second embodiment of the present invention, the detection state of the detection sensor, urine termination, when water termination is ended after a predetermined period, which is a fixed period, elapses after water discharge is started in the first mode of urine dilution water discharge mode. It is a figure which shows the time change of the water discharging state in water discharging mode, and the water discharging state in main flush water discharging mode. In the urinal according to the second embodiment of the present invention, when the control to execute the second mode is switched to the control to execute the second mode from the control to execute the first mode of the urine dilution water discharge mode, a predetermined period which is a variable period elapses from the water discharge start. It is a figure which shows the time change of the detection state of a detection sensor, the spouting state in the urine dilution spouting mode, and the spouting state in the main flush spouting mode when ending spouting later. In the urinal according to the second embodiment of the present invention, when the second mode of the urine dilution water discharge mode is set before the start of detection, the water discharge is ended after a predetermined period, which is a variable period, from the water discharge start. It is a figure which shows the time change of the detection state of a detection sensor, the spouting state in urine dilution spouting mode, and the spouting state in main flush spouting mode, In the urinal according to the second embodiment of the present invention, after the water discharge in the urine dilution water discharge mode is started, the abnormal diagnosis period elapses while the detection sensor continues the detection state, and the water discharge in the urine dilution water discharge mode is ended. It is a figure which shows the time change of the detection state of a detection sensor, the spouting state in urine dilution spouting mode, and the spouting state in this washing spouting mode.

  As a result of intensive studies, the present inventors have found the following new finding that uristone is generated even in a very short time in an environment in which organic matter stains containing a biofilm are formed.

  Heretofore, the mechanism of the generation of urinary calculus focusing on inorganic stains such as urinary calculus has been known as follows. In this mechanism, urination remains in the drainage trap pipeline and the horizontal draw pipe after the user's use of the urinal, and general bacteria adhere to the retained urine. In this general bacterial metabolic process, an enzyme called urease is excreted. The urease enzyme decomposes urea in urine to generate ammonia. The aqueous solution of ammonia raises the pH in the liquid containing urine and becomes alkaline. In a relatively high environment where the pH exceeds 8.0 to 8.5, the solubility of carbonates and phosphates of Ca and Mg contained in the urine decreases, and these salts are contained in the urine. It precipitates and adheres to drainage trap pipelines and cross piping as urinary stone. It has been considered that the occurrence of such mineral soiled urinary calculus proceeds relatively slowly over a relatively long time of 2 hours or more.

  On the other hand, the present inventors pay attention to the organic matter stain different from the inorganic matter stain among the stains generated in the drainage trap pipeline and the horizontal pulling pipe, and the environment where the organic matter stain including the biofilm is formed. In the case of Uristone, it has been found that uristone is generated even in a very short time of several seconds.

As shown in FIGS. 1A to 1C, the mechanism of the generation of urolith U in a short time is focused on the organic substance stain V containing a biofilm, and is explained as follows.
Organic soiling V is formed by complexing a biofilm centered on EPS (Extracellular Polysaccharide: Extracellular Poly Succharide) released during growth of bacteria X such as general bacteria, proteins contained in urine, etc. . Such organic matter dirt V is known as a slime in piping and forms a very viscous mucus. In the biofilm of such organic matter dirt V, the bacteria X attached to the drainage trap pipeline 14 and the horizontal draw piping 3 etc. form a polymer of polysaccharide outside the cells, and the cells are detached by being enveloped thereby It is believed to be restrained and to develop.

  In FIG. 1A, a part of the drainage trap pipeline 14 of the urinal before the user urinates the urinal is shown enlarged. The drainage trap pipeline 14 shown in FIG. 1A is in a state after the user has continued to use the urinal 1 a number of times. The drainage trap pipeline 14 stores the flush water discharged in the previous main flush discharge mode. Hereinafter, although the state and reaction in the drainage trap pipeline 14 are described in FIGS. 1A to 4G, the state and reaction in equipment piping downstream of the drainage trap pipeline 14 such as the horizontal draw piping 3 and the like are also described. It is substantially the same and is applied to the horizontal drawing pipe 3 and the like.

When the user uses the urinal 1, if a biofilm of organic matter dirt V is formed in the drainage trap pipeline 14, the bacteria X generates and develops this biofilm. The biofilm forms a sponge-like internal structure, and easily retains bacteria X and ammonia (or ammonium ion NH ₄ ⁺ ) inside. Bacteria X excrete the urease enzyme, and this urease enzyme decomposes the urea in the urine to generate ammonia (or ammonium ion NH ₄ ⁺ ). Therefore, a large amount of ammonia (or ammonium ion NH ₄ ⁺ ) is present in the vicinity of the biofilm. The pH of the region in the vicinity of the organic substance stain V is raised to a relatively high value by the ammonia being water-soluble in the liquid in the vicinity of the organic substance stain V to generate ammonium ion NH ₄ ⁺ . The pH of the high pH environment region Y in the vicinity of the organic matter stain V containing a biofilm becomes a value of 8 or more, preferably 9 or more, preferably 8 to 10.

  In FIG. 1B, in the urinal having the drainage trap pipeline 14 as shown in FIG. 1A, the drainage trap is performed for a relatively short time until the user urinates and the urinal cleaning operation is performed. It shows a state in which the inside of the conduit 14 is substantially filled with urine. When this urine comes in contact with or approaches the high pH environment region Y in the vicinity of the organic matter soil V, carbonates and phosphates of Ca and Mg contained in the urine are deposited, and it takes a very short time of several seconds. Mechanism was found to generate urinary stone U.

  In FIG. 1C, after the urinal cleaning operation is performed from the state where the drainage trap pipeline 14 is substantially filled with urine as shown in FIG. 1B, the urine in the drainage trap pipeline 14 is new. It shows the state of being replaced by the washing water. Although the urine in the drainage trap pipeline 14 is replaced with fresh washing water, the deposited urinary stone U remains adsorbed to the organic matter dirt V. Since the biofilm forms a sponge-like internal structure, the urinary stone U is also easily retained. It was also found that when the urolith U adheres in this way, the bacteria X is more easily attached to the urolith U itself, and the generation of the urolith U is further promoted. Thus, it has been found that, by stacking of each short cleaning, urite is deposited on organic matter soil V in a short time, and uristone U is stacked.

  Based on such new findings, the present inventors inhibit the operation of the mechanism that generates urinary calculus in a relatively short time by the contact of the wash water containing urine with the biofilm, and the drainage trap pipeline 14 And, a technique for suppressing the generation of urinals in the horizontal draw pipe 3 is invented.

  Furthermore, the inventors of the present invention have conducted intensive studies to find that the urine of the cleaning water in the drainage trap pipeline 14 and the horizontal draw pipe in an equivalent period in an environment where organic matter contamination including a biofilm is formed. We found the following new findings that the amount of urinary calculus was different due to the difference in concentration.

  In FIG. 2A, in the urinal having the drainage trap pipeline 14 as shown in FIG. 1A, the drainage trap pipeline is performed for a relatively short time until the user urinates and the urinal cleaning operation is performed. The figure shows that 14 is almost filled with relatively high urine concentration wash water. When the wash water having a relatively high urine concentration touches or approaches the high pH environment region Y in the vicinity of the organic matter dirt V, relatively many urinates U are generated in a very short time of about several seconds.

As shown in FIG. 2B, relatively frequent urination U generated is contaminated with organic matter V even after the flushing operation of the urinal is performed and the flushing water in the drainage trap pipeline 14 is replaced with new flushing water. It remains in the state of being absorbed by the
As shown in FIG. 3, when the user urinates, washing water with a relatively high urine concentration flows into the drainage trap pipeline 14 in this manner by repeating it every time the urinal is used. A large amount of generated urinary stone U accumulates on the drainage trap pipeline 14 and makes the thickness of the organic matter dirt V relatively large.

  On the other hand, in FIG. 2C, in the urinal having the drainage trap pipeline 14 as shown in FIG. 1A, the drainage trap is performed for a relatively short time until the user urinates and the urinal cleaning operation is performed. It shows that the inside of the conduit 14 is substantially filled with the relatively low urine concentration wash water. When the wash water with a relatively low urine concentration touches or approaches the high pH environment region Y in the vicinity of the organic matter stain V, relatively little urethral U is generated in a very short time of several seconds. Thus, after the user urinates, the amount of urinary stone U generated depends on the urine concentration of the flush water in the drainage trap pipeline 14 at each equivalent time until the urinal flushing operation is performed. Findings were found. Therefore, if the urine concentration of the flush water in the drainage trap pipeline 14 can be reduced, it has also been found that the deposition amount of the urinary stone U can be suppressed.

As shown in FIG. 2D, the relatively small amount of generated urinary urine U also remains adsorbed to the organic substance stain V after the urinal cleaning operation is performed.
As shown in FIG. 3, relatively low urine concentration wash water flows into the drainage trap pipeline 14 at the time of urination by the user, if it is repeated every time the urinal is used. Since a small amount of urine U accumulates on the drainage trap pipeline 14, the thickness of the organic matter dirt V can be suppressed. It was also found that the difference in the urine concentration of the flush water in the drainage trap pipeline 14 at the time of each user's urination becomes a larger difference in the thickness of the organic substance stain V as the number of times of use increases.

  Furthermore, the inventors of the present invention have conducted intensive studies, and the difference in the urine concentration of the washing water in the drainage trap pipeline 14 and the horizontal draw pipe makes the mechanism of generation of urinary calculus different, and the thickness of the organic matter contamination V increases. Found the following findings:

  In FIG. 4A, the mechanism of the occurrence of the organic matter contamination V including the biofilm in the drainage trap pipeline 14 and the horizontal draw pipe 3 as shown in the above-mentioned FIG. 1A is again schematically shown. As shown in step (a) in FIG. 4A, the user's urination adheres to the drainage trap pipeline 14, and the bacteria X adheres to the urine and grows on the drainage trap pipeline 14. As time passes and / or the number of uses of the urinal 1 increases, the process proceeds from step (a) to step (b) in FIG. 4A.

As shown in step (b) in FIG. 4A, a biofilm of organic matter dirt V is formed in the drainage trap pipeline 14. Next, the process proceeds from step (b) to step (c). As shown in step (c) in FIG. 4A, the biofilm is likely to retain bacteria X and ammonia (or ammonium ion NH ₄ ⁺ ) inside. The bacteria X inside the biofilm excrete the urease enzyme Z, and this urease enzyme Z decomposes the urea in the urine to generate ammonia (or ammonium ion NH ₄ ⁺ ). Thus, in a state before the user urinates in the urinal, a part of the drainage trap pipeline 14 of the urinal is in a state where the organic matter contamination V as shown in FIG. 4A (c) is formed. ing.

As shown in FIG. 4B, when a relatively high urine concentration of urination and / or washing water flows into the drainage trap pipeline 14 in which the organic matter dirt V is formed as shown in FIG. 4A (c), urea is compared The amount of urea in the urine that the urease enzyme Z degrades is relatively large and ammonia is relatively large. The water solubility of these ammonias causes the formation of ammonium ions NH ₄ ^+, and the pH of the region in the vicinity of the organic matter dirt V rises to a relatively high value.

As shown in FIG. 4C, in a high pH environment as shown in FIG. 4B, inorganic substances in a liquid containing urine, for example, Ca ²⁺ , Mg ²⁺ , NH ₄ ⁺ , PO ₄ ^3- etc react with ammonia. Then, the reaction for precipitating magnesium ammonium phosphate is dominant. Magnesium ammonium phosphate is a urolith component that is easily produced from urine under alkaline conditions.

  As shown in FIG. 4D, magnesium ammonium phosphate gives rise to relatively large particle size crystalline uroliths. FIG. 4D is an image obtained by a scanning electron microscope (SEM), and the display magnification is 2000 ×. This image is a photograph of organic matter contamination obtained by an experiment that reproduces the occurrence of organic matter contamination in the drainage trap pipe line 14 and the horizontal draw pipe 3 of the urinal 1 according to the first embodiment, as described later. It is. The inclusion of such relatively large particle size urinals in the biofilm makes it easy to increase the thickness of the urinals and the thickness of the organic matter stain V. The thickness of the organic matter stain V mainly containing such a magnesium ammonium phosphate uric acid is likely to be increased more than the thickness of the organic matter stain V containing a calcium phosphate urinary stone described later. As the urine concentration of the washing water in the drainage trap pipeline 14 increases, the deposition ratio of magnesium ammonium phosphate increases, and the thickness of the organic substance stain V increases.

On the other hand, as shown in FIG. 4E, when the urine and / or wash water having a relatively low urine concentration flows into the drainage trap pipeline 14 in which the organic matter contamination V is formed as shown in FIG. 4A (c) Do. At this time, since the amount of urea is relatively small, the amount of urea in the urine that is degraded by the urease enzyme Z is relatively small, and the generation of ammonia is relatively small. Therefore, the rise in pH due to the ammonium ion NH ₄ ⁺ generated by the aqueous solution of ammonia is suppressed relatively low.

As shown in FIG. 4F, in an environment where pH increase is relatively low and suppressed as shown in FIG. 4E, inorganic substances in a liquid containing urine, such as Ca ²⁺ , Mg ²⁺ , PO ₄ ^3−, etc. The two react with each other, and the reaction to precipitate calcium phosphate is dominant. Calcium phosphate is a urinary stone component that is likely to be produced from urine even under an environment closer to neutrality than the environment where magnesium ammonium phosphate described above is likely to be produced from urine.

  As shown in FIG. 4G, calcium phosphate gives rise to relatively small noncrystalline uroliths of particle size. FIG. 4G is an image obtained by a scanning electron microscope (SEM), and the display magnification is 2003 times. This image is a photograph of organic matter contamination obtained by an experiment that reproduces the occurrence of organic matter contamination in the drainage trap pipe line 14 and the horizontal draw pipe 3 of the urinal 1 according to the first embodiment, as described later. It is. Calcium phosphate urinary stone is smaller than magnesium ammonium phosphate urinary stone. The inclusion of such relatively small particle size urinals in the biofilm increases the thickness of the urinals and the thickness of the organic soiling V little by little. In the case where the smaller particle size urinal is the main component, the rate of increase in thickness is relatively slow, and the thickness is less likely to be increased. As the concentration of urine in the washing water flowing into the drainage trap pipeline 14 decreases, the deposition rate of calcium phosphate increases, and the thickness of the organic substance stain V becomes difficult to increase.

  The present inventors, based on such new findings, suppress the increase in the urine concentration of the washing water flowing into the drainage trap pipeline 14, and attach the urine stone adhering to the drainage trap pipeline 14 and the horizontal draw pipe 3. Invented a technology to suppress the thickness of

Hereinafter, the structure of the urinal according to the first embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 5 to 8, the urinal 1 is a urinal that cleans the bowl surface with the flush water that has been discharged. The urinal 1 is provided with a toilet body 2 which is a urinal made of pottery, and an automatic cleaning unit 4 which is a water discharging device for automatically discharging flush water for cleaning the toilet body 2 to the toilet body 2 There is.
As for the urinal 1 of the present embodiment, a small wall-mounted type in which the lowermost portion of the toilet body 2 is positioned a predetermined distance above the floor surface K and the back surface of the toilet body 2 is attached along the wall C behind it. Although the toilet bowl will be described, it may be a floor-type urinal in which the toilet body 2 is directly disposed on the floor surface K.
Hereinafter, in the embodiment of the present invention, the floor K side is the lower side, the opposite side and upper side of the floor K with the urinal 1 in between, and the front side of the wall C and the opposite side with the urinal 1 in between are the front. The wall C side of the urinal 1 is the back side, and the left side is the left side, and the right side is the right side when viewed from the front side.

  A bowl portion 6 for receiving urination is formed on the front side of the toilet body 2, and a part of the automatic cleaning unit 4 is accommodated in the upper region of the toilet body 2 on the rear side of the bowl portion 6. Storage room 8 is formed. In addition, a drain port 10 is formed at the bottom of the bowl portion 6 of the toilet body 2. The drainage plate 10 is disposed at the drainage port 10. The toilet body 2 further includes a drainage trap pipe line 14 that is a drainage trap that forms sealed water in the downstream side of the drainage port 10. The drainage trap line 14 communicates with the drainage port 10. On the downstream side of the drainage trap pipeline 14, a transverse drawing piping 3 is connected via a drainage socket 15 or the like that forms a flow passage penetrating the wall surface C.

  The drainage trap pipe line 14 is formed as a water saving type trap such that the volume of the washing water stored so as to form sealed water in the drainage trap pipe line 14 is 200 ml or less. The drainage trap pipe line 14 of such a water saving type trap can replace the washing water in the drainage trap pipe line with a small amount of washing water as compared with the conventional drainage trap pipe line having a volume of about 700 ml. The volume of the water saving type drainage trap pipeline 14 is preferably in the range of 40 ml to 200 ml, more preferably in the range of 120 ml to 200 ml, and more preferably 120 ml. Since such a water saving type drainage trap pipeline has a volume smaller than the urine volume of the user's urine, the urine concentration of the flush water in the drainage trap pipeline 14 tends to be high, and this urine Dilution of water is effective for suppressing the deposition of urinary stones in the drainage trap pipeline 14 and the horizontal draw pipe 3.

  The drainage trap pipeline 14 may be a drainage trap in which the volume of the stored cleaning water is larger than 200 ml, for example, a drainage trap with a conventional volume of about 700 ml. Even in the conventional drainage trap pipeline, urine deposits in the drainage trap pipeline 14 and the horizontal draw pipe 3 by diluting the urine and suppressing the increase in the urine concentration of the flush water in the drainage trap pipeline 14 Is suppressed.

  The drainage trap pipeline 14 includes a downward pipeline 14a, a laterally extending folded pipeline 14b, and an upward pipeline 14c. The downfall conduit 14a and the uplift conduit 14c are separated by a common wall 14d. Since the drainage trap pipeline is folded back and forth on the common wall 14d, the drainage trap pipeline 14 is miniaturized and the volume of the drainage trap pipeline 14 is also reduced. In the central cross section shown in FIG. 7, the width 14e in the front-rear direction of the lower end portion of the downfalling pipe 14a and the width 14f in the front-back direction of the lower end portion of the rising pipe 14c are formed to be substantially the same width. Is miniaturized in the front and back direction. Further, in the central cross section shown in FIG. 7, the width in the front-rear direction from the width 14f at the lower end of the rising pipe 14c to the width 14g at the upper end is substantially constant, and the drainage trap pipe 14 is miniaturized in the front-rear direction It is done.

As shown in FIG. 9, the automatic cleaning unit 4 stops the main water supply pipe 16 forming the main water supply path 16a to which the cleaning water is supplied from a water supply source (not shown) such as a water supply and the main water supply pipe 16 A pipe joint 24 which is a branching part connected to the water stop valve 18 for water and the downstream end of the main water supply pipe 16 and branching the main water supply pipe 16 into the first water supply pipe 20 and the second water supply pipe 22 And have.
Further, the flow rate (instantaneous flow rate) of washing water passing through the water supply passage (first water supply passage 20a) inside the first water supply pipe 20 branched from the main water supply pipe 16 by the pipe joint 24 The first flow rate valve 26 is provided to adjust the flow rate to a first predetermined flow rate Q1 [liter / minute]. The first flow rate valve 26 may be formed to be able to change the flow rate of the washing water passing through the inside of the first water supply passage 20a.

  Further, on the downstream side of the first flow rate valve 26, a first on-off valve 28 which is a valve device for opening and closing the first water supply passage 20a is provided. At the downstream end of the first water supply passage 20a downstream of the first on-off valve 28, a spreader 30 (water discharger), which is a part of a water discharger for discharging wash water into the bowl portion 6, is provided. The first water discharger 32 of the spreader 30 is connected to the downstream end of the first water supply passage 20a. In the present embodiment, the first predetermined flow rate Q1 [liter / minute] is preferably in the range of 8 [liter / minute] to 17 [liter / minute], more preferably 8 [liter / minute] to 12 It is set in the range of liters / minute, even more preferably 9 liters / minute.

  On the other hand, in the other second water supply pipe 22 branched from the main water supply pipe 16 by the pipe joint 24, the flow rate (instantaneous flow rate) of washing water passing through the water supply path (second water supply path 22a) inside thereof. The second flow rate valve 34 is provided to adjust the second predetermined flow rate Q2 [liters / minute] lower than the first predetermined flow rate Q1 [liters / minute]. The second flow rate valve 34 may be formed to be able to change the flow rate of the washing water passing through the second water supply passage 22a.

  On the downstream side of the second flow rate valve 34, a second on-off valve 36, which is a valve device for opening and closing the second water supply passage 22a, is provided. The second water discharger 38 of the spreader 30 is connected to the downstream end of the second water supply passage 22 a downstream of the second on-off valve 36. In the present embodiment, the second predetermined flow rate Q2 [liter / minute] is preferably set in the range of 0.1 [liter / minute] to 8.0 [liter / minute], and more preferably 0. It is set in the range of 1 l / min to 0.6 l / min. The flow rate difference between the first predetermined flow rate Q1 [liters / minute] and the second predetermined flow rate Q2 [liters / minute] is preferably 1.0 [liters / minute] to 8.9 [liters / minute]. Minutes] is set. The valve device for opening and closing the water supply path to the spreader 30 may be configured using the first flow valve 26 or the second flow valve 34.

  Next, on the downstream side of the second on-off valve 36, an electricity release bacteria water unit 43 is provided via the check valve 40, and the electricity release bacteria water unit 43 generates electricity release bacteria water. An electrolyzer (not shown) is provided to function as an electricity release bacterial water supply unit that supplies the second water discharge unit 38 with the electrostatic release bacteria water.

  In addition, the automatic cleaning unit 4 is provided in the spreader 30 to detect the use of the toilet body 2 by the user, and receives a detection signal transmitted from the detection sensor 44, as well as a predetermined control program. The controller 46 is a control unit that controls the operations of the first on-off valve 28 and the second on-off valve 36 based on the above.

  The detection sensor 44 is an infrared human-body detection sensor. The detection sensor 44 stands in front of the toilet body 2 and detects the presence or absence of the user who uses the toilet body 2. The detection sensor 44 may be a Doppler type sensor using a microwave. The Doppler type detection sensor 44 can detect not only the presence or absence of the user but also the urine flow urinated by the user into the toilet body 2. The Doppler type detection sensor 44 may be disposed as either a detection sensor that detects the presence or absence of the user who uses the urinal body or a detection sensor that detects the urine flow urinated by the user into the toilet body 2. The Doppler detection sensor 44 may be provided at another position where the presence or absence of the user and the urine flow can be detected. Since the Doppler type detection sensor 44 can detect not only the presence or absence of the user but also the urine flow, the user's presence or absence of urination on the bowl surface 48 and the timing of the start and end of urination can be made more accurately It is possible to measure water consumption and to start water spouting according to the user's urination start, and achieve more efficient water conservation.

  As a modification, both of the human body detection sensor and the detection sensor capable of detecting the urine flow (for example, an infrared human body detection sensor and a Doppler type sensor) may be disposed. At this time, the user may be made to detect the start of urination by the detection sensor capable of detecting the urine flow, and the human body detection sensor may detect the user's leaving from the toilet body 2. As a result, the presence or absence of urination on the bowl surface 48 of the user and the timing of the start and end of urination can be measured more accurately, and it is possible to start spouting in response to the start of urination of the user and to achieve more efficient Water conservation can be achieved.

  The controller 46 incorporates a CPU, a memory and the like, and can control other devices based on a predetermined control program and the like. The controller 46 controls the opening and closing operation of the first on-off valve 28 to control the start and end of spouting in the main flush spouting mode from the first spouting unit 32. The controller 46 controls the opening and closing operation of the second on-off valve 36 to control the start and end of the urine dilution spouting mode from the second spouting portion 38 or spouting of disinfected water.

  The controller 46 performs a urine dilution water discharge mode in which water is discharged from the second water discharge unit 38 while the detection sensor 44 is in the detection state, and the first water discharge unit 32 after the detection state of the detection sensor 44 ends. A control program is provided to execute each of the main wash and water discharge modes for water discharge.

  The controller 46 further includes a control program for controlling the second on-off valve 36 so as to terminate the water discharge after a predetermined period T has elapsed after the water discharge in the urine dilution water discharge mode is started. Furthermore, if the detection sensor 44 for detecting the presence or absence of the user who uses the toilet body 2 is in a non-detection state before the predetermined period T elapses since the controller 46 further starts water discharge in the urine dilution water discharge mode, A control program is provided to control the second on-off valve 36 so as to terminate the water discharge in the dilution water discharge mode. The controller 46 further controls the first on-off valve 28 to start spouting in the main flush spout mode continuously by controlling the second on-off valve 36 to terminate spouting in the urine dilution spout mode. It has a control program to control. The controller 46 further includes a control program for executing other control contents.

  In the present embodiment, the first water supply passage 20a and the second water supply passage 22a of the automatic cleaning unit 4 are separately formed, and the first water outlet 60 and the second water outlet 76 are separately formed. However, as a modification, water may be supplied by one common water supply channel, and may be formed to discharge water by one common water outlet. For example, the automatic cleaning unit 4 includes the main water supply pipe 16, the first water supply pipe 20 connected to the downstream end of the main water supply pipe 16, and the flow rate of cleaning water passing through the first water supply pipe 20. A first flow rate valve 26 formed to be changeable, and a first on-off valve 28 for opening and closing a first water supply passage 20a downstream of the first flow rate valve 26 are provided. The first water discharge port 60 of the first water discharge part 32 is opened at the downstream end of the first water supply passage 20a. The automatic cleaning unit 4 omits the second water supply passage 22a, and performs water discharge in the urine dilution water discharge mode through the first water supply passage 20a. Furthermore, the second water discharge port 76 is omitted, and water discharge of the water discharge flow rate Q2 [liter / minute] in the urine dilution water discharge mode is discharged from the first water discharge port 60. As described above, spouting in the urine dilution spouting mode may be performed from the first spout 60.

Next, with reference to FIGS. 6-8, the detail of the bowl part 6 in the toilet bowl main body of the urinal of this embodiment is demonstrated.
A bowl surface 48 for receiving urination is formed on the surface of the bowl portion 6, and the bowl surface 48 has a generally J-shaped shape in a side view. The bowl surface 48 is formed to extend to the front surface 7 of the storage chamber 8 of the toilet body 2.
The bowl surface 48 has, from the top to the bottom, an arc-shaped front surface portion 48a opened so that the front surface faces the user. The bowl surface 48 is not provided with a side portion projecting like a wall forward from the conventional bowl surface in the upper region where the spreader 30 is provided, and is formed only from the front portion 48a. Such a front portion 48 a forms a forward curved surface in which a perpendicular perpendicular to the curved surface of the front surface portion 48 a is directed to the standing position of the user standing in front of the toilet body 2. That is, in the horizontal cross section, the front portion 48a extends horizontally with respect to the tangent extending in the horizontal direction at all the positions, and connects the left end 48b and the right end 48c of the bowl surface 48 in the horizontal direction. Cross with the minute.

  The front portion 48a of the upper region of the bowl surface 48 is an arc having a substantially single radius of curvature from the left end 48b to the right end 48c of the bowl surface 48 in a horizontal cross section (1 such that the radius of curvature does not change substantially in the middle) Arcs, which are formed along an arc called a single R). The bowl surface 48 in the lower region below the upper region forms a compound curved surface shape by a combination of arcs having two different radii of curvature or a combination of arcs and straight lines. The front portion 48 a of the bowl surface 48 is formed to be inclined rearward from the upper end 48 d of the bowl surface 48 downward.

The bowl surface 48 of the bowl portion 6 is formed such that the radius of curvature of the horizontal cross section thereof becomes smaller toward the lower side. The radius of curvature of the arc of the horizontal cross section is formed to gradually decrease as it goes downward from the upper end 48d of the bowl surface 48, and the lateral width of the bowl surface 48 gradually as it goes downward (a front view of the bowl surface 48 Is formed so as to reduce the projected width). The upper limit of the radius of curvature may be almost infinite, that is, the horizontal cross section of the upper end 48d of the bowl surface 48 may be formed in a straight line.
The bowl surface 48 includes a shelf 42 extending downward from the left and right sides of the bowl surface 48 to the front side.

Next, the details of the spreader in the automatic cleaning unit of the urinal according to this embodiment will be described with reference to FIGS. 6 and 9 to 11.
First, as shown in FIG. 6, the spreader 30 is provided at the center in the left-right direction in the upper region of the bowl surface 48, and the exterior cover 50 is attached to the front side of the spreader 30 and the detection sensor 44. . In addition, in the spreader 30 shown in FIG. 11, while showing the state which removed the exterior cover 50, it abbreviate | omits and shows about related components, such as a detection sensor 44 provided in the spreader 30 ,.

  As shown in FIGS. 6 and 11, the spreader 30 includes a spreader body 52 fixedly attached to the bowl surface 48, and a nozzle member 54 inserted and attached to the attachment hole 52a of the spreader body 52. There is.

As shown in FIG. 11, the inside of the spreader main body 52 communicates with the first water supply passage 20 a of the first water supply pipe 20 and the second water supply passage 22 a of the second water supply pipe 22. And the second water passage 58 are formed respectively.
At a downstream end on the front side of the first water flow passage 56, a first water discharge port 60 which is a part of the first water discharge portion 32 is formed. The first water flow passage 56 of the spreader main body 52 has a flow passage directed downward from an upstream water flow passage 56a formed to extend in the front-rear direction and a front end on the downstream side of the upstream water flow passage 56a. To expand, it has a downstream water passage 56b which is formed in a generally fan-like shape in a front view. Thus, the wash water supplied from the first water supply passage 20a into the upstream water flow passage 56a passes through the downstream water flow passage 56b and spreads laterally from the first water discharge port 60 on the bowl surface 48. The first predetermined flow rate Q1 [liter / minute] is to be discharged as the wash water B1.

  Next, as shown in FIG. 6 and FIG. 11, the nozzle member 54 is provided with an attachment portion 62 attached to the attachment hole 52 a of the spreader main body 52. Further, the nozzle member 54 is provided with a nozzle portion 64 integrally provided at the front end portion of the attachment portion 62 as a part of the second water discharge portion 38. The nozzle portion 64 is formed downward from the side of the spreader main body 52. Therefore, the nozzle portion 64 is disposed at a position eccentric to the horizontal center line D of the bowl surface 48. Therefore, the water flow spouted in the urine dilution spout mode is spouted from a position eccentric to the lateral center line D of the bowl surface 48.

  A water passage 68 communicating with the second water passage 58 of the spreader main body 52 is formed inside the mounting portion 62 of the nozzle member 54. A water flow passage 72 extending from the water flow passage 68 is formed in the nozzle portion 64 of the nozzle member 54, and further, at the tip of the nozzle portion 64, a second water discharge portion 38 has a single circular cross section. A water outlet 76 is formed. The washing water supplied from the second water supply passage 22a of the second water supply pipe 22 to the water flow passage 68 of the nozzle member 54 has a flow rate from the second water discharge port 76 at a first predetermined flow rate Q1 [liter / minute]. The water is discharged as wash water B2 having a low second predetermined flow rate Q2 [liters / minute]. Further, the flow rate Q1 [L / min] of spouted water from the first spout 60 in the main flush spouting mode is larger than the flow rate Q2 [L / min] of spouted water from the second spout 76 in the urine dilution spouting mode. It is done. Furthermore, when water discharge in the urine dilution water discharge mode is performed from the first water discharge port 60 of the spreader 30, the first water discharge port 60 can be used instead of the second water discharge port 76.

Next, the operation (action) of the urinal according to the first embodiment of the present invention will be described with reference to FIGS. 12 to 14.
First, referring to FIGS. 12 and 13, in the urinal according to the first embodiment of the present invention, water discharging in the urine dilution water discharging mode is ended after a predetermined period T has elapsed after water discharging in the urine dilution water discharging mode is started. The operation (action) will be described.
FIG. 12 is a flow chart showing a control operation of the controller for each use in which the user uses the urinal when executing the urine dilution water discharge mode in the urinal according to the first embodiment of the present invention. FIG. 13 shows the detection state of the detection sensor in the case where the water discharging in the urine dilution water discharging mode is started after the predetermined period T has elapsed after the water discharging in the urine dilution water discharging mode is started in the first embodiment of the present invention; It is a figure which shows the time change of the water discharging state in main mode and the water discharging state in main washing water discharging mode, and FIG. 14 is a urinal in the 1st embodiment of this invention. If the detection sensor is in the non-detection state before the lapse of T, the detection state of the detection sensor, the spouting state in the urine dilution spouting mode, and the spouting state in the main flush spouting mode It is a diagram showing between changes.
In FIG. 12, S indicates each step.

  First, as shown in FIG. 12, when the user stands on the front side of the bowl portion 6 of the toilet body 2 of the urinal 1 at S0, the detection sensor 44 detects the user's use (the time is reached (time) t0), the detection signal is transmitted to the controller 46, and the controller 46 recognizes the presence of the user, and proceeds to S1. At this time, the first on-off valve 28 is in a closed state, and the second on-off valve 36 is also closed.

  In S1, the controller 46 determines whether or not a predetermined waiting time has elapsed from time t0. The controller 46 does not start the urine dilution water discharge mode immediately after time t0, and stands by for a waiting time from the start of detection to the start of urination of the user. This suppresses the spouting of the wash water, which hardly contributes to the dilution of urine before the user's urination starts, and can save the wash water for diluting the urine.

  From time t0 to time t1 before the start of urination, the user stands in front of the bowl 6 and is ready to take off clothes and urinate. The time t1 when the user starts urination is set as the time from the time t0 when an average adult user takes off dressing and prepares to urinate after passing an average clothes removal time . The clothes removal time is set to about 8 seconds. The waiting time from time t0 to time t1 corresponds to the undressing time. From time t0 to time t1, since the user's urination has not started, the urine concentration in the drainage trap pipeline 14 is almost zero.

  In S1, when the standby time has not elapsed from time t0, the controller 46 returns to S1 again to perform the determination. When the standby time has elapsed from time t0 (when time t1 has come), the controller 46 determines that the timing to synchronize the start of the user's urination and urine dilution spouting has come, and proceeds to S2 .

  As a modification, S1 may be omitted, and the controller 46 may control to advance to S2 to start the urine dilution water discharge mode from time t0.

  In S2, the controller 46 starts the execution of the urine dilution water discharge mode from time t1. The controller 46 opens the second on-off valve 36 and executes the urine dilution water discharge mode while the detection sensor 44 is in the detection state. The controller 46 measures the elapsed time for water spouting to continue after starting spouting in the urine dilution spouting mode.

  As shown in FIGS. 9 and 11, the controller 46 causes the second on-off valve 36 to be opened by the start of the urine dilution water discharge mode, and the cleaning water of the main water supply passage 16a of the main water supply pipe 16 is The water is supplied to the second water supply passage 22 a of the water supply pipe 22. The controller 46 keeps the first on-off valve 28 closed. The flush water B2 that has flowed to the second water supply passage 22a passes through the second flow rate valve 34 and flows into the second water flow passage 58. Then, after passing through the water flow passage 68 inside the nozzle member 54 of the spreader 30, the washing water B2 is discharged from the second water discharge port 76. The controller 46 opens the second on-off valve 36 in the subsequent urine dilution water discharge mode to continue water discharge from the second water discharge port 76.

  From time t1, the user starts urination. The controller 46 assumes and sets that the user's urination starts from time t1 by the urination timing based on the standard urination timing model. The standard voiding timing model indicates the time course from the user detection start to the voiding start and voiding end, which is statistically assumed (assumed) when a standard adult user tries to urinate It is a model. Such standard voiding timing models are predetermined based on statistically and experimentally obtained data. The standard urination timing model sets an assumed start time and an assumed end time. The assumed start time is a time when it is assumed that the user's urination starts after the detection sensor 44 is in the detection state, and is a time from time t0 to time t1. The assumed end time is a time when it is assumed that the user's urination ends after the detection sensor 44 is in the detection state, and is a time from time t0 to time t2. The standard voiding timing model is applied, for example, by applying the typical urine flow curve pattern of a healthy person shown in FIG. 5 (a) of Non-Patent Document 1 to the operation timing of the present technology.

  From time t1 to time t2, since the user's urination is performed, the urine concentration in the drainage trap pipeline 14 rises. At this time, since the spouting in the urine dilution spouting mode is performed, the urine concentration in the drainage trap pipeline 14 is suppressed lower than in the case where the urine dilution spouting mode is not performed. Therefore, it is possible to suppress the generation of urinals in a short time in the drainage trap pipeline 14 and the horizontal pulling pipe 3 and the like.

  The controller 46 controls the second on-off valve 36 to close the water discharge so as to end the water discharge after a predetermined period T has elapsed after the water discharge in the urine dilution water discharge mode is started at time t1. The predetermined period T is a period from time t1 to time t2. The predetermined period T is preferably set in the range of 15 seconds to 45 seconds, more preferably in the range of 25 seconds to 40 seconds, and more preferably 30 seconds. Although the predetermined period T is set to a fixed period, it may be set to a variable period.

  The controller 46 discharges a predetermined amount of water A1 [liter] in a predetermined period T. For example, the predetermined water amount A1 [liter] is set to 0.2 liter.

As shown in FIG. 12, in S <b> 3, the controller 46 determines whether or not a predetermined period T has elapsed since water discharge in the urine dilution water discharge mode is started.
When the predetermined period T has not elapsed from time t1, the controller 46 determines that the possibility that the user continues urination is high, and proceeds to S4.
When the predetermined period T has elapsed from time t1 (when time t2 is reached), the controller 46 determines that the possibility that the user has finished urination is high, and proceeds to S5.

  At S4, the controller 46 determines whether the detection sensor 44 is in the detection state. When the detection sensor 44 is in the detection state, the controller 46 determines that there is a possibility that the user is urinating the bowl portion 6, and returns to S3. When the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating the bowl portion 6 and proceeds to step S8.

  At time t2, it is assumed that the predetermined period T has elapsed from time t1 and the user ends urination. When it becomes time t2 in S3, it progresses to S5. In S5, the controller 46 ends the urine dilution water discharge mode to stop water discharge, and proceeds to S6. As shown in FIGS. 9 and 11, the controller 46 closes the second on-off valve 36 at the end of the urine dilution water discharge mode, and stops the supply of flush water to the second water supply passage 22a. Thus, water spouting from the second spout 76 of the nozzle portion 64 is stopped.

  At S6, the controller 46 determines whether the detection sensor 44 is in the detection state. When the detection sensor 44 is in the detection state, the controller 46 is assumed to have finished urination of the general user, but there is also a possibility that the user may urinate the bowl portion 6 I will judge. As a result, the controller 46 returns to S6 to ensure that the main flush discharge mode is executed after the user finishes urinating the bowl portion 6 and goes away. When the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating the bowl portion 6 and proceeds to step S7.

  Between time t2 and time t3, the user stands in front of the bowl 6 and prepares to wear from the front of the toilet body 2 in preparation for dressing. The time t3 is set after the average clothes wearing time assumed to prepare for the average adult user to wear and leave from the time t2 has elapsed. During this time, although the detection sensor 44 is in the detection state, water discharge in the urine dilution water discharge mode is ended. Therefore, the water discharge can be reliably ended after the predetermined period T has elapsed, as compared with the case where the water discharge in the urine dilution water discharge mode is ended when the detection sensor 44 is in the non-detection state. Therefore, the detection sensor 44 erroneously detects the non-detection state, that is, can not detect the non-detection state, and it is possible to prevent wasteful consumption of the washing water due to the continued water discharge. In addition, during a period in which it is assumed that the general user's urination ends after the predetermined period T has elapsed, by not performing water discharge in the urine dilution water discharge mode, the increase in the amount of flush water to be discharged is suppressed. Water saving can be achieved.

  As shown in FIG. 13, at time t3, the detection state of the user by the detection sensor 44 ends, and the detection state is not detected. Since the detection sensor 44 is in the non-detection state, the controller 46 proceeds to S7 in S6.

As shown in FIG. 12, at S7, the controller 46 executes the main flush water discharge mode.
As shown in FIGS. 9 and 11, the controller 46 first transmits a control signal to the first on-off valve 28 to open the first on-off valve 28 by execution of the main flush water discharge mode. The washing water of the main water supply passage 16 a of the main water supply pipe 16 flows through the pipe joint 24 only to the first water supply passage 20 a. The flush water B1 that has flowed to the first water supply passage 20a passes the first flow rate valve 26, and is spouted from the first water discharge port 60 at a relatively high first predetermined flow rate Q1 [liter / min]. (See Figure 6). The controller 46 causes the first on-off valve 28 to open for a certain period of time so that the total amount of water discharged in the main flush / discharge mode becomes the standard amount of water W. The standard amount of water W [liters] discharged in the main wash / discharge mode is, for example, 0.5 liters (500 ml).

  As shown in FIGS. 6 and 11, the wash water B1 spouted from the first spout 60 is spouted so as to spread in the left and right direction along the bowl surface 48, and the bowl surface 48 is cleaned wider than before. can do.

  The flush water B1 having flowed down the bowl surface 48 flows into the drainage trap pipeline 14 from the drainage port 10. The flush water B1 flows toward the horizontal draw pipe 3 on the downstream side of the drain trap pipe 14 to discharge the urine in the drain trap pipe 14 or the horizontal draw pipe 3 to the downstream side. The washing water B1 flows at a relatively high flow rate Q1 and the diluted urine in the drainage trap pipeline 14 is replaced with new washing water to make the urine concentration of the washing water in the drainage trap pipeline 14 relatively large. It can be reduced. The controller 46 closes the first on-off valve 28 and stops the water discharging operation of the spreader 30 when the amount of water discharged in the main washing / water discharging mode reaches the standard water amount W at time t4 and stops the main washing water discharging. End the mode operation and go to the end.

  At the end, the controller 46 ends the control operation for each use cycle which starts after the detection sensor 44 detects the user's use, and puts the detection sensor 44 in a standby state. When the detection sensor 44 again detects the use of the user, the controller 46 starts the control operation for each use cycle from S0.

Next, referring to FIG. 12 and FIG. 14, in the urinal according to the first embodiment of the present invention, use of using the toilet body 2 before the predetermined period T elapses after the water discharge in the urine dilution water discharge mode is started. An operation (action) when the detection sensor 44 for detecting the presence or absence of the person is in the non-detection state will be described. Since the operation of the urinal until the detection sensor 44 is in the non-detection state as shown in S4 is the same as the operation of the urinal described above, the same reference numerals are given to the same portions as the operation of the urinal described above , Their explanation is omitted.
FIG. 14 is a detection sensor 44 for detecting the presence or absence of the user who uses the toilet body 2 before the predetermined period T elapses from the start of spouting in the urine dilution spout mode in the urinal according to the first embodiment of the present invention. It is a figure which shows the time change of the spouting state in a urine dilution spouting mode, and the spouting state in this washing spouting mode, when it will be in a non-detection state.

  As shown in FIGS. 12 and 14, at time t5, the detection sensor 44 is in the non-detection state. In S4, when the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating in the bowl portion 6 and proceeds to S8.

  In S8, the controller 46 detects that the detection sensor 44 for detecting the presence or absence of the user who uses the toilet body 2 is not detected at time t5 before the predetermined period T has elapsed since the start of water discharge in the urine dilution water discharge mode. In this case, the second on-off valve 36 is controlled to close the water discharge in the urine dilution water discharge mode so as to end the water discharge. At this time, the controller 46 determines that the user has finished urinating the bowl portion 6 and is away, although the general user's urination is in a predetermined period T which is assumed to be continuing. Therefore, the controller 46 terminates the water discharge in the urine dilution water discharge mode to prevent the water discharge in the urine dilution water discharge mode from continuing and discharging the waste water, and the user leaves the water discharge in the urine dilution water discharge mode. It can be stopped according to and water saving in urine dilution water discharge mode can be achieved. The controller 46 terminates the water discharge in the urine dilution water discharge mode, and proceeds from S8 to S7. In S7, in succession to S8, the controller 46 immediately executes the main flush discharge mode.

  As a modification, the controller 46 may determine whether the standby time has elapsed between S8 and S7. Thus, the controller 46 can start water discharge in the main water discharge mode after waiting for a predetermined standby time.

As shown in FIG. 12 and FIG. 14, in S7, the controller 46 executes the main flush water discharge mode from time t5. Here, the controller 46 starts the spouting in the main flush spouting mode in S7 continuously with closing the second on-off valve 36 so as to terminate spouting in the urine dilution spouting mode in S8. The on-off valve 28 of 1 is opened. The controller 46 can execute two water discharges continuously so as to eliminate the waiting time between the water discharge in the urine dilution water discharge mode and the water discharge in the main flush water discharge mode. Therefore, by such control, it is possible to terminate the water discharge in the main wash water discharge mode at a relatively quick timing, and to improve the continuous usability of the urinal.
The controller 46 closes the first on-off valve 28 and stops the water discharging operation of the spreader 30 when the amount of water discharged in the main wash water discharge mode reaches the standard water amount W at time t6, and the main wash water discharge End the mode operation and go to the end.

  According to the urinal 1 according to the first embodiment of the present invention described above, the controller 46 controls the urine dilution water discharge mode in which water discharge is performed from the second water discharge port 76 while the detection sensor 44 is in the detection state; After the detection state of the sensor 44 ends, the main cleaning water discharge mode is performed in which water discharge is performed from the first water discharge port 60 at a flow rate of water discharge larger than the flow rate of water discharge in the urine dilution water discharge mode. In such a case, the controller 46 controls the second on-off valve 36 so as to end the water discharge after a predetermined period has elapsed since the water discharge in the urine dilution water discharge mode was started. Therefore, according to the present invention, spouting after a predetermined period has elapsed since the spouting in the urine dilution spouting mode is started, as compared with the case where the spouting in the urine dilution spouting mode is ended when the detection sensor 44 is in the non-detection state. It can be made to complete | finish reliably and the useless consumption of the wash water by continuing the water discharge without the detection sensor 44 being unable to detect a non-detection state can be prevented.

  Furthermore, according to the urinal 1 according to the first embodiment, the presence or absence of the user who uses the toilet body 2 before the elapse of the predetermined period T which is the fixed period after the controller 46 starts water discharge in the urine dilution water discharge mode. The second on-off valve 36 is controlled to end spouting in the urine dilution spouting mode when the detection sensor 44 that is detecting is in a non-detecting state. Therefore, according to the present embodiment, when the non-detection state is earlier than the predetermined period T, the presence or absence of the user who uses the toilet body 2 before the predetermined period T elapses after the water discharge in the urine dilution water discharge mode is started. Since water discharge in the urine dilution water discharge mode is not continued after the detection sensor 44 being detected is in a non-detection state, the amount of water discharged in the urine dilution water discharge mode can be reduced, and water saving can be achieved. it can.

  Furthermore, according to the urinal 1 according to the first embodiment, the controller 46 controls the second on-off valve 36 so as to end the water discharge in the urine dilution water discharge mode continuously, the water discharge in the main flush water discharge mode The first on-off valve 28 is controlled to start the control. Therefore, according to the present embodiment, the waiting time between the water discharge in the urine dilution water discharge mode and the water discharge in the main flush water discharge mode can be continuously performed, and the water discharge in the main flush water discharge mode is compared It is possible to finish at a quick timing to improve the continuous usability of the urinal.

Next, a urinal according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the first mode and the second mode of the urine dilution water discharge mode can be switched instead of the urine dilution water discharge mode of the first embodiment. The urinal according to the second embodiment has substantially the same structure as the urinal according to the first embodiment described above, so the same parts as those of the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted. .
FIG. 15 is a flow chart showing the control operation of the controller in the case where the control to execute the second mode is switched to the control to execute the second mode from the control to execute the first mode of the urine dilution water discharge mode in the urinal according to the second embodiment of the present invention FIG. 16 is a view showing the urinal according to the second embodiment of the present invention, when the controller is preset to execute the second mode of urine dilution water discharge mode. FIG. 17 is a flowchart showing the control operation of the controller for each use cycle using the toilet bowl, and FIG. 17 is a diagram of the urinal according to the second embodiment of the present invention, starting water discharge in the first mode of urine dilution water discharge mode. Then, when the water discharge is ended after the predetermined period T which is a fixed period has elapsed, the detection state of the detection sensor, the water discharge state in the urine dilution water discharge mode, and the main washing It is a graph showing a temporal change of the water discharge state in the water mode. In FIG.15 and FIG.16, S has shown each step.

  In the urinal according to the second embodiment of the present invention, the controller 46 further starts the spouting in the urine dilution spouting mode when the detection sensor 44 for detecting the presence or absence of the user using the toilet body 2 is in the detection state Thereafter, the control program is provided which can execute a first mode of urine dilution water discharge mode in which water discharge is terminated after a predetermined period T which is a fixed period. The controller 46 further starts detection of water in the urine dilution water discharge mode by the detection sensor 44 detecting the presence or absence of the user who uses the toilet body 2 before the user of the user using the toilet body 2 It has a control program capable of executing the second mode of the urine dilution water discharge mode in which water discharge is ended after a predetermined period T ′ which is a variable period until the detection sensor 44 which detects the presence or absence becomes a non-detection state. The controller 46 further includes a control program capable of switching between the first mode and the second mode. The controller 46 may be configured to be able to switch between the first mode and the second mode.

  When the detection sensor 44 for detecting the presence or absence of the user using the toilet body 2 is not detected before the predetermined period T elapses which is the fixed period of the first mode of the urine dilution water discharge mode, the controller 46 further And a control program for controlling the second on-off valve 36 so as to execute the second mode of the urine dilution water discharge mode and terminate the water discharge in the urine dilution water discharge mode. Furthermore, the controller 46 controls the second on-off valve 36 so as to terminate the water discharge in the urine dilution water discharge mode, and continuously starts the water discharge in the main flush water discharge mode. Control program to control the The controller 46 further starts the water discharge in the urine dilution water discharge mode in the second mode of the urine dilution water discharge mode, and then the urine dilution water discharge when the abnormal diagnosis period elapses while the detection sensor 44 continues the detection state. A control program is provided to terminate water discharge in the mode. The controller 46 further includes a control program for executing other control contents.

Referring to FIGS. 15 and 17, in the urinal according to the second embodiment of the present invention, when the controller executes the first mode of urine dilution water discharge mode, water discharge in urine dilution water discharge mode is started and then predetermined. The operation (action) of ending the water discharge in the urine dilution water discharge mode after the period T has elapsed will be described.
The controller 46 ends the spouting after a predetermined period T which is a fixed period, from the start of spouting in the urine dilution spouting mode by execution of the first mode of the urine dilution spouting mode.
The operation when the controller 46 executes the first mode of the urine dilution water discharge mode in the urinal according to the second embodiment is the water discharge in the urine dilution water discharge mode after the predetermined period T has elapsed in the urinal according to the first embodiment described above. Since the operation is almost the same as the operation for ending, the same parts as those in the first embodiment described above are given the same reference numerals, and the description thereof will be omitted.

  First, as shown in FIG. 15, when the user stands on the front side of the bowl 6 of the toilet body 2 of the urinal 1 at S0, the detection sensor 44 detects the presence of the user (time t0), go to S1. In the urinal according to the second embodiment of the present invention, in the standby state before S0, the controller 46 performs the first mode of the urine dilution water discharge mode by the operation of the operation panel (not shown) or the switch operation. Is set to run. Therefore, the control is started with the scheduled execution of the first mode of urine dilution water discharge mode with the start of control in S0.

  In S1, the controller 46 determines whether or not a predetermined waiting time has elapsed from time t0. The controller 46 determines that it is time to synchronize the start of the user's urination and the start of urine dilution spouting when the standby time has elapsed from the time t0 (when the time t1 has come), S2 Go to As a modification, S1 may be omitted, and the controller 46 may control to advance to S2 to start the urine dilution water discharge mode from time t0.

  In S2, the controller 46 tries to execute the first mode of urine dilution water discharge mode from time t1. The controller 46 opens the second on-off valve 36 and executes the first mode of the urine dilution water discharge mode in which water discharge is performed from the second water discharge port 76 while the detection sensor 44 is in the detection state. The controller 46 measures the elapsed time for water spouting to continue after starting spouting in the urine dilution spouting mode.

  The controller 46 controls the second on-off valve 36 to close the water discharge so as to end the water discharge after a predetermined period T which is a fixed period has elapsed after the water discharge in the urine dilution water discharge mode is started at time t1. The predetermined period T is a period from time t1 to time t2. The predetermined period T is preferably set in the range of 15 seconds to 45 seconds, more preferably in the range of 25 seconds to 40 seconds, and more preferably 30 seconds. The predetermined period is set to a predetermined period T which is a fixed period in the first mode.

  As shown in FIG. 15, in S3, the controller 46 determines whether or not a predetermined period T, which is a fixed period, has elapsed since the water discharge in the urine dilution water discharge mode is started. When the predetermined period T has not elapsed from time t1, the controller 46 determines that the possibility that the user continues urination is high, and proceeds to S4. When the predetermined period T has elapsed from time t1 (when time t2 is reached), the controller 46 determines that the possibility that the user has finished urination is high, and proceeds to S5.

  At S4, the controller 46 determines whether the detection sensor 44 is in the detection state. When the detection sensor 44 is in the detection state, the controller 46 determines that there is a possibility that the user is urinating the bowl portion 6, and returns to S3. When the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating the bowl portion 6 and proceeds to step S8.

  When it becomes time t2 in S3, it progresses to S5. In S5, the controller 46 ends the urine dilution water discharge mode by the first mode to stop water discharge, and proceeds to S6. The subsequent operation is substantially the same as the operation of the first embodiment, and thus the description thereof is omitted.

Next, referring to FIG. 15 and FIG. 18, in the urinal according to the second embodiment of the present invention, the controller 46 executes the second mode during control to execute the first mode of urine dilution water discharge mode When switching to the control, the urine dilution water discharge mode is performed after a predetermined period T 'which is a variable period until the detection sensor 44 for detecting the presence or absence of the user using the toilet body 2 becomes non-detection state from the water discharge start. The operation (action) for ending the water discharge will be described.
FIG. 18 shows that in the urinal according to the second embodiment of the present invention, when switching from the control to execute the first mode of the urine dilution water discharge mode to the control to execute the second mode, the variable period from the water discharge start It is a figure showing a time change of a detection state of a detection sensor, a spouting state in a urine dilution spouting mode, and a spouting state in a main flush spouting mode when the spouting is ended after a certain predetermined period T ′ elapses.
The controller 46 starts the water discharge in the urine dilution water discharge mode by executing the second mode of the urine dilution water discharge mode, and then ends the water discharge after a predetermined period T ′ which is a variable period has elapsed. In the second mode, the predetermined period is set to a predetermined period T ′ which is a variable period. The controller 46 changes the predetermined period from the predetermined period T to the predetermined period T ′ by switching from the first mode to the second mode.

  As shown in FIG. 15, in S4, when the detection sensor 44 is in the non-detection state even during control to execute the first mode of urine dilution water discharge mode, the controller 46 performs the first of the urine dilution water discharge mode Control to switch between the first mode and the second mode can be performed to execute the two modes. Specifically, in S4, when the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating the bowl portion 6 and proceeds to S8.

  In S8, when the detection sensor 44 for detecting the presence or absence of the user using the toilet body 2 becomes non-detection state at time t5 before the lapse of the predetermined period T which has been set previously, the controller 46 performs urine dilution. The second mode of the water discharge mode is executed to control and close the second on-off valve 36 so as to end the water discharge in the urine dilution water discharge mode. At this time, although the controller 46 is in a predetermined period T during which it is assumed that the general user's urination is continuing, it is determined that the current user has finished urinating the bowl portion 6 and is away. . Thus, the controller 46 ends the water discharge in the second mode of the urine dilution water discharge mode. Therefore, by such control, it is possible to prevent the water discharge in the urine dilution water discharge mode from being continued and to discharge the waste water, and the water discharge in the urine dilution water discharge mode can be stopped according to the user's withdrawal. Water saving can be achieved in the dilution water discharge mode. The controller 46 terminates the water discharge in the urine dilution water discharge mode, and proceeds from S8 to S7. In S7, in succession to S8, the controller 46 immediately executes the main flush discharge mode.

  As a modification, the controller 46 may determine whether the standby time has elapsed between S8 and S7. Thus, the controller 46 can start water discharge in the main water discharge mode after waiting for a predetermined standby time.

As shown in FIG. 15 and FIG. 18, in S7, the controller 46 executes the main flush discharge mode from time t5. Here, the controller 46 starts the spouting in the main flush spouting mode in S7 continuously with closing the second on-off valve 36 so as to terminate spouting in the urine dilution spouting mode in S8. The on-off valve 28 of 1 is opened. The controller 46 can execute the main flush discharge mode continuously so as to eliminate the waiting time between the spout in the urine dilution spout mode and the spout in the main flush discharge mode. Therefore, by such control, it is possible to terminate the water discharge in the main wash water discharge mode at a relatively quick timing, and to improve the continuous usability of the urinal.
The controller 46 closes the first on-off valve 28 and stops the water discharging operation of the spreader 30 when the amount of water discharged in the main wash water discharge mode reaches the standard water amount W at time t6, and the main wash water discharge End the mode operation and go to the end.

Furthermore, referring to FIGS. 16 and 19, in the urinal according to the second embodiment of the present invention, when controller 46 is set before the start of detection so as to execute the second mode of urine dilution water discharge mode. The operation to end spouting in the urine dilution spouting mode after lapse of a predetermined period T ', which is a variable period from the start of spouting to the detection sensor 44 detecting presence or absence of the user using the toilet body 2 The (action) will be described.
FIG. 19 is a urinal according to the second embodiment of the present invention, in the case where it is set before the start of detection so as to execute the second mode of urine dilution water discharge mode, water discharge after a predetermined period T 'has elapsed from the water discharge start. It is a figure which shows the time change of the detection state of a detection sensor, the spouting state in the urine dilution spouting mode, and the spouting state in the main flush spouting mode when ending.
The controller 46 starts the water discharge in the urine dilution water discharge mode by executing the second mode of the urine dilution water discharge mode, and then ends the water discharge after a predetermined period T ′ which is a variable period has elapsed.

  First, as shown in FIG. 16, when the user stands on the front side of the bowl portion 6 of the toilet body 2 of the urinal 1 in S10, the detection sensor 44 detects that the user is using (time It progresses to t0) and S11. In the urinal according to the second embodiment of the present invention, in the standby state before S10, the controller 46 detects the number of the urine dilution spouting mode at the time of detection by the operation of the operation panel (not shown) or the switch operation. It is preset to execute 2 modes. Therefore, the second mode of urine dilution water discharge mode is executed along with the start of control in S10.

  In S11, the controller 46 determines whether or not a predetermined waiting time has elapsed from time t0. When the standby time has elapsed from time t0 (when time t1 is reached), the controller 46 proceeds to S12. As a modification, S1 may be omitted, and the controller 46 may control to advance to S12 to start the urine dilution water discharge mode from time t0.

In S12, the controller 46 starts the execution of the urine dilution water discharge mode from time t1 and proceeds to S13.
At S13, the controller 46 determines whether the detection sensor 44 is in the detection state. When the detection sensor 44 is in the detection state, the controller 46 determines that there is a possibility that the user is urinating the bowl portion 6, and proceeds to S15. When the detection sensor 44 is in the non-detection state, the controller 46 determines that the user has finished urinating the bowl portion 6 and proceeds to step S14.

  In S13, the controller 46 continues the water discharge if the detection sensor 44 continues the detection state even after the predetermined period T set in the first mode. Therefore, when the user urinates for a long period of time, urine dilution spouting can be performed according to the urination, and the increase in the urine concentration in the drainage trap pipeline 14 can be more reliably suppressed.

  At time t7, when the detection sensor 44 is in the non-detection state, the process proceeds to S14 on the assumption that the predetermined period T 'until the non-detection state is reached. The time t7 is a time after the elapse of the predetermined period T, but may be a time before the elapse of the predetermined period T as described later. In S14, the controller 46 terminates the water discharge in the urine dilution water discharge mode, and proceeds to S16. Therefore, the controller 46 executes the second mode of the urine dilution water discharge mode to start water discharge in the urine dilution water discharge mode, and then the detection sensor 44 for detecting the presence or absence of the user who uses the toilet body 2 is not It is possible to end the water discharge after a predetermined period T 'has elapsed until the detection state is reached. In S16, in succession to S14, the controller 46 immediately executes the main flush discharge mode.

As shown in FIG. 16 and FIG. 19, in S16, the controller 46 executes the main flush discharge mode from time t7. Here, the controller 46 starts the spouting in the main flush spouting mode in S16 continuously with closing the second on-off valve 36 so as to terminate spouting in the urine dilution spouting mode in S14. The on-off valve 28 of 1 is opened. The controller 46 can execute the main flush discharge mode continuously so as to eliminate the waiting time between the spout in the urine dilution spout mode and the spout in the main flush discharge mode. Therefore, by such control, it is possible to terminate the water discharge in the main wash water discharge mode at a relatively quick timing, and to improve the continuous usability of the urinal.
The controller 46 closes the first on-off valve 28 and stops the water discharging operation by the spreader 30 when the amount of water discharged in the main wash water discharge mode reaches the standard water amount W at time t8, and the main wash water discharge End the mode operation and go to the end.

  Further, referring to FIGS. 16 and 18, in the second mode of the urine dilution water discharge mode of the urinal according to the second embodiment of the present invention, a detection sensor 44 for detecting the presence or absence of the user using the toilet body 2 is provided. The operation (action) of terminating the water discharge in the urine dilution water discharge mode when the detection state is relatively early made will be described. In the urinal according to the second embodiment as shown in FIG. 19, the description is omitted for the operation overlapping with the operation when the controller 46 is set before the start of detection so as to execute the second mode of urine dilution water discharge mode. Do.

  In S13, when the detection sensor 44 enters the non-detection state relatively early, for example, at time t5 before the predetermined period T elapses, the process proceeds to S14. In S14, the controller 46 terminates the water discharge in the urine dilution water discharge mode, and proceeds to S16. Therefore, the controller 46 executes the second mode of the urine dilution water discharge mode to start water discharge in the urine dilution water discharge mode, and then the detection sensor 44 for detecting the presence or absence of the user who uses the toilet body 2 is not It is possible to end the water discharge after a predetermined period T 'has elapsed until the detection state is reached. In S16, in succession to S14, the controller 46 immediately executes the main flush discharge mode.

Furthermore, referring to FIG. 16 and FIG. 20, in the second mode of the urine dilution water discharge mode of the urinal according to the second embodiment of the present invention, detection sensor 44 detects after water discharge in urine dilution water discharge mode is started. An operation (action) for terminating the spouting in the urine dilution spouting mode when the abnormality diagnosis period E passes while the state is continued will be described.
FIG. 20 is a urinal according to the second embodiment of the present invention. Since water discharge in the urine dilution water discharge mode is started, the abnormality diagnosis period elapses while the detection sensor continues the detection state, and water discharge in the urine dilution water discharge mode It is a figure which shows the time change of the detection state of a detection sensor, the spouting state in the urine dilution spouting mode, and the spouting state in the main flush spouting mode when ending.
In the urinal according to the second embodiment as shown in FIG. 19, the description is omitted for the operation overlapping with the operation when the controller 46 is set before the start of detection so as to execute the second mode of urine dilution water discharge mode. Do.

  In S15, the controller 46 determines whether or not the abnormality diagnosis period E has elapsed from time t1. The abnormality diagnosis period E is a time from time t1 to time t9. The abnormality diagnosis period E can be set as a value obtained by dividing the standard amount of water W [liters] by the second predetermined flow rate Q2 [liters / minute] or more. When the abnormality diagnosis period E has not elapsed, the controller 46 determines that there is a possibility that the user is urinating the bowl portion 6, and returns to S13. When the abnormality diagnosis period E has elapsed, the controller 46 determines that there is an abnormality in the detection sensor 44 or an abnormality in the use state of the user, and prevents wasteful consumption of washing water due to continued water discharge. Therefore, it progresses to S14.

  As shown in FIG. 20, when the controller 46 starts water discharge at time t1 in the second mode of urine dilution water discharge mode, the abnormality diagnosis period E elapses while the detection sensor 44 continues the detection state ( At time t9), it is possible to temporarily determine that the detection sensor 44 is in the non-detection state, and terminate the water discharge in the urine dilution water discharge mode. Therefore, by such control, it is possible to set an upper limit to the duration of spouting in the urine dilution spouting mode, and it is possible to prevent wasteful consumption of the flush water.

  In S14, the controller 46 terminates the water discharge in the urine dilution water discharge mode, and proceeds to S16. In S16, in succession to S14, the controller 46 immediately executes the main flush discharge mode.

As shown in FIG. 16 and FIG. 20, in S16, the controller 46 executes the main flush discharge mode from time t9. Here, at time t9, the controller 46 starts the spouting in the main flush discharge mode in S16 continuously with the closing of the second on-off valve 36 so as to terminate the spouting in the urine dilution spouting mode in S14. The first on-off valve 28 is opened so as to cause The controller 46 can execute the main flush discharge mode continuously so as to eliminate the waiting time between the spout in the urine dilution spout mode and the spout in the main flush discharge mode. Therefore, by such control, the spouting in the main flush discharge mode is executed at a relatively quick timing, and the flush water having a high urine concentration in the drainage trap pipeline 14 is drained at an early stage, thereby suppressing the generation of urinalysis. be able to.
The controller 46 closes the first on-off valve 28 and stops the water discharging operation by the spreader 30 when the amount of water discharged in the main washing / water discharging mode reaches the standard water amount W at time t10, and the main washing / water discharging End the mode operation and go to the end.

  According to the urinal 1 according to the second embodiment of the present invention described above, the urine dilution water discharge mode in which the controller 46 discharges water from the water discharger while the detection sensor 44 is in the detection state, and the detection of the detection sensor 44 After the state is finished, a main flush discharge mode of discharging water from the water discharger at a flow rate of discharge water larger than a flow rate of water discharge in the urine dilution water discharge mode is performed. In such a case, the controller 46 controls the second on-off valve 36 so as to end the water discharge after a predetermined period has elapsed since the water discharge in the urine dilution water discharge mode was started. Therefore, according to the present embodiment, water discharge after a predetermined period has elapsed after the water discharge in the urine dilution water discharge mode is started, as compared with the case where the water discharge in the urine dilution water discharge mode is ended when the detection sensor 44 is in the non-detection state. It is possible to prevent the wasteful consumption of the washing water by continuing the water discharge without the detection sensor 44 being able to detect the non-detection state.

  Furthermore, according to the urinal 1 according to the second embodiment, the controller 46 is configured to be able to switch between the first mode and the second mode. Thereby, depending on the installation location of the toilet body 2 and the use condition thereof, it is possible to change the method of determining the predetermined period until the water discharging in the urine dilution water discharging mode is ended, achieving more water saving in the urine dilution water discharging mode can do.

  Furthermore, according to the urinal 1 according to the second embodiment, the controller 46 detects the presence or absence of the user who uses the toilet body 2 before the elapse of the predetermined period T which is the fixed period of the first mode of urine dilution spouting mode. When the detection sensor 44 is in the non-detection state, the second mode of the urine dilution water discharge mode is executed to control the second on-off valve 36 so as to end the water discharge in the urine dilution water discharge mode, and further Subsequently to the control of the second on-off valve 36 so as to terminate the water discharge in the urine dilution water discharge mode, the first on-off valve 28 is controlled to start the water discharge in the main flush water discharge mode. Therefore, according to the present embodiment, when the non-detection state is reached earlier than the predetermined period T which is the fixed period of the first mode, the toilet main body 2 has not been operated for the predetermined period T since the water discharge in the urine dilution water discharge mode is started. Since the spouting in the urine dilution spouting mode is not continued after the detection sensor 44 detecting the presence or absence of the user who is using the camera is in the non-detection state, the amount of water spouted in the urine dilution spouting mode can be reduced. Water saving can be achieved. Furthermore, according to the present embodiment, in the first mode, spouting in the urine dilution spouting mode and spouting in the main flush spouting mode can be continuously performed so as to eliminate the standby time, and Spouting can be terminated relatively quickly to improve the continuous usability of the urinal.

  Furthermore, according to the urinal 1 according to the second embodiment, the controller 46 detects the presence or absence of the user who uses the toilet body 2 after the water discharge in the urine dilution water discharge mode is started in the second mode. When the abnormal diagnosis period elapses while the detection sensor 44 continues the detection state, the water discharge in the urine dilution water discharge mode is ended. Therefore, according to this embodiment, an upper limit can be set to the continuation time of spouting in the urine dilution spouting mode, and wasteful consumption of cleaning water can be prevented.

DESCRIPTION OF SYMBOLS 1 urinal 2 toilet bowl 3 side pulling piping 4 automatic cleaning unit 6 bowl part 7 front face 8 storage room 10 drainage port 12 eyelet 14 drainage trap pipeline 14a downfall pipeline 14b pipeline 14c uplift pipeline 14d common wall 14e longitudinal direction Width 14f Width of lower end 14g Width of upper end 15 Drain socket 16 Main water supply pipe 16a Main water supply line 18 Water stop valve 20 First water supply pipe 20a First water supply line 22 Second water supply pipe 22a Second water supply Route 24 Pipe joint 26 First flow valve 28 First on-off valve 30 Spreader 32 First water discharger 34 Second flow valve 36 Second on-off valve 38 Second water discharger 40 Check valve 42 Shelf 43 Releasing bacteria water unit 44 Detection sensor 46 Controller 48 Bowl surface 48a Front part 48b Left end 48c Right end 48d Upper end 50 Exterior cover 52 Spreader main part 52a Mounting hole 54 Nozzle Material 56 first water flow passage 56a upstream water flow passage 56b downstream water flow passage 58 second water flow passage 60 first water discharge port 62 attachment portion 64 nozzle portion 68 water flow passage 72 second water discharge path A1 water volume B1 Wash water B2 Wash water C Wall surface D Left-right direction center line E Abnormality diagnosis period K Floor Q1 Flow rate Q Flow period T0 Time t1 Time t2 Time t2 Time t4 Time t4 Time t5 Time t6 Time t7 Time t8 Time t8 Time t10 Time U Stone W Standard water volume X Bacteria Y Environmental zone Z Urease enzyme

Claims (6)

A urinal for washing a bowl surface with the flush water discharged,
A bowl portion which forms the bowl surface to receive urination and which forms a drain at the bottom thereof;
A urinal body provided with a drainage trap in communication with the drainage port of the bowl portion;
A water discharger for discharging wash water to the bowl surface;
A detection sensor that detects the presence or absence of the user using the urinal body or the urine flow that the user urinates into the urinal body;
A valve device for opening and closing a water supply passage to the water discharger;
A control unit that controls the discharge of wash water from the water discharge unit;
The control unit
A urine dilution water discharge mode in which water discharge is performed from the water discharge portion while the detection sensor is in a detection state;
After the detection state of the detection sensor is finished, the main cleaning water discharge mode in which water discharge is performed from the water discharge portion at a flow rate of water discharge larger than the flow rate of water discharge in the urine dilution water discharge mode is configured to be performed.
The control unit controls the valve device so as to end the water discharge after a predetermined period of time has elapsed since the water discharge in the urine dilution water discharge mode is started.   The control unit does not detect the detection sensor which detects the presence or absence of the user who uses the urinal body before the predetermined period which is a fixed period elapses after the water discharge in the urine dilution water discharge mode is started. The urinal according to claim 1, wherein the valve device is controlled to end the water discharge in the urine dilution water discharge mode when it becomes a state.   The control unit controls the valve device to start water discharge in the main flush water discharge mode continuously with controlling the valve device to end water discharge in the urine dilution water discharge mode. Urinal described in 2. The control unit is configured to start water discharging in the urine dilution water discharging mode by the detection sensor being in a detection state, and to stop water discharging after the predetermined period, which is a fixed period, is the first mode of the urine dilution water discharging mode. When,
After the water discharge in the urine dilution water discharge mode is started by the detection sensor being in the detection state, the detection sensor detecting the presence or absence of the user using the urinal body is in the non-detection state It is configured to be able to execute the urine dilution water discharge mode second mode in which water discharge is ended after the predetermined period which is a variable period has elapsed.
The urinal according to claim 1, wherein the control unit is configured to switch between the first mode and the second mode.   In the non-detection state, the control unit detects the presence or absence of the user who uses the urinal body before the predetermined period, which is a fixed period of the first mode of the urine dilution water discharge mode, elapses If so, the second mode of the urine dilution water discharge mode is executed to control the valve device to end the water discharge in the urine dilution water discharge mode, and further, the water discharge in the urine dilution water discharge mode is ended The urinal according to claim 4, wherein the valve device is controlled to start water discharge in the main flush water discharge mode continuously with controlling the valve device.   The control unit is configured to detect the presence or absence of the user using the urinal body after starting water discharge in the urine dilution water discharge mode in the second mode of the urine dilution water discharge mode. The urinal according to claim 4 or 5, wherein the water discharge in the urine dilution water discharge mode is ended when the abnormal diagnosis period elapses while the detection state is continued.