JP3398881B2 - Urinal cleaning system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a urinal cleaning system.

[0002]

2. Description of the Related Art As is well known, in the case of a urinal, in order to wash the body of the urinal that receives the urine after adding, wash water (generally, from the top of the inside of the urinal itself) Normal water is used).

In order to flush such flushing water, the user presses the push button of the urinal flushing valve mounted on the upper part of the toilet body, so that a certain amount of flushing water flows out and then stops. There is something like this. However, if the pressing condition of the user is set as the start condition in this way, the cleaning cannot be performed if the user forgets to press it. Further, there is a possibility that the push button may be pushed more than necessary due to mischief, etc., and there is a problem that the cleaning water is wasted. Further, there is also a problem that the work itself that a person presses down after use is complicated.

Therefore, as a solution to the above problems,
For example, if an infrared sensor is installed above the urinal and a person has stopped before the urinal for a certain period of time, it is detected that the person has left the urinal after that, and a certain amount of flush water is supplied. Some have been made to flush. In such a system,
It is not necessary for a person to press the push button one by one,
Since washing water automatically flows when a person leaves after use, there is an advantage that washing can be remembered.

[0005]

However, in the above-mentioned cleaning system using the infrared sensor, the sensor unit is installed at a position visible from the outside, so that the user intentionally holds his / her hand in front of the sensor unit for a certain period of time. If the user removes his hand after that, the same sensor output as if a person had added a small amount of water is obtained, and the washing water may flow. In addition, the sensor unit itself may be pressed and damaged. In this way, it is easy to be mischievous.

Further, when used by a short person such as a child, it cannot be detected, and there is a possibility that the wash water cannot be automatically flowed when the wash water has to be flowed. Furthermore, for example, if you stood in front of the urinal for a certain amount of time with the intention of adding urinals, but if you eventually leave the urinal without adding urinals, the toilet bowl itself is not dirty from the viewpoint of saving water, etc. It is not necessary to flush, but in the case of the system using the conventional infrared sensor, the washing water will be flushed. As described above, there is a problem that an operation suitable for the usage state such as the presence or absence of actual small use may not be performed.

Furthermore, since the sensor is exposed, there is a feeling of strangeness in terms of design. Further, since water flows depending on the presence or absence of a user, for example, even when the water distribution pipe is clogged, a certain amount of washing water flows, which may cause overflow to the outside of the toilet body. Furthermore, since each user cannot detect the amount of urine he has added, a certain amount of washing water is constantly flowing, which is wasteful. Furthermore, it is of course impossible to detect the interruption or leaving of the wash water.

The present invention has been made in view of the above-mentioned background, and an object thereof is to solve the above-mentioned problems and to allow washing water suitable for the use condition to flow.
In addition, it is possible to prevent mischief, overflow to the outside, abnormal water alarm of running out of wash water, water saving, and water saving.In addition, the sensor for detecting the presence or absence of excess is not exposed to the outside. It is to provide a cleaning system for urinals that prevents damage caused by direct contact with the urinal and has a good design.

[0009]

In order to achieve the above object, in the urinal cleaning system according to the present invention, there is provided a trap portion for temporarily storing a predetermined amount of liquid formed on the inner bottom surface of the urinal body. A urinal cleaning system installed in a urinal equipped with a flush water pipe with a valve capable of supplying flush water to the urinal body, and controlling opening and closing of the valve, which is located above the trap section. A pressure sensor is installed, and a pipe line connecting the trap unit and the pressure guiding unit of the pressure sensor is arranged, and the liquid in the trap unit can enter into the pipe line, thereby changing the liquid level of the trap unit. Is detected by the pressure sensor through the gas blocked in the pipe, and the control means is provided for controlling the opening and closing of the valve according to the detection result (claim 1).

When supplemented, the excreted urine collects in the trap portion, and the water level rises. Then, the water level in the pipeline also rises, so that the gas in the pipeline is compressed and the pressure rises. Therefore, it is possible to detect that urine has been discharged by detecting such a pressure increase using the pressure sensor. Therefore, when the control means opens the valve based on the detection result, the wash water flows. Since the pressure sensor can detect the presence or absence of urination, it works even if you are short like a child, there is no malfunction like holding an hand like an infrared sensor, and the sensor can be installed inside, so it will be damaged Possibility is low and it is hard to be tampered with. The pipe line may be a single pipe 11 as shown in the embodiment,
A plurality of members may be connected. Then, as shown below, when a filter or a trap is mounted, the pipes 11 and 1 in the embodiment that allow liquid and air to pass therethrough
1'and those filters and so on are used as a pipeline.

Further, a washing pipe branching from the washing water pipe located downstream of the valve is provided, the washing pipe is connected to a predetermined position of the pipe passage, and the washing water is provided in the pipe passage. It is more preferable that a part of the above can be supplied (Claim 2). That is, even if a foreign substance exists in the pipeline, it is forcibly discharged by the cleaning water. The connection portion of the cleaning pipe to the pipe line may be in the vicinity of the trap portion, which is the tip of the pipe line, or may be a predetermined position above it, or the tank, and may be at any position. You can

In each of the above examples, preferably, a water resistant filter is provided in the middle of the pipe line (claim 3). With such a configuration, the rise of liquid such as water can be prevented, and malfunction or failure of the sensor can be prevented.

Further, a trap curved in a substantially U shape is provided in the middle of the pipe line, and a predetermined blocking material is filled in the trap, and the blocking material blocks the passage of gas such as liquid silicone. In addition, it is more preferable that the pipe can be moved in accordance with the pressure (claim 4). With such a configuration, even if the ammonia mixed in the urine moves upward in the pipeline, the blocking member can prevent the ammonia from further rising, so that the pressure sensor and the control means can be prevented from being adversely affected.

On the other hand, the control means includes a discrimination means for discriminating whether or not urination is based on the output of the pressure sensor,
When the result of the determination is urination, the valve may be opened to supply the flush water into the toilet body (claim 5).

More preferably, the control means further comprises means for detecting the amount of urine discharged, and the amount of the wash water supplied is adjusted according to the amount of urine (claim 6). With such a configuration, when the urine amount is large, the amount of washing water can be correspondingly increased, and conversely, when the urine amount is small, the amount of washing water can also be small. This eliminates the need to unnecessarily flow a large amount of washing water, and a water saving effect can be expected.

Further, the control means includes a comparison means for determining whether or not the water level of the liquid accumulated in the trap portion or the toilet body exceeds a set value, and depending on whether or not the set level is exceeded, At least one of the opening degree and the opening time of the valve may be changed (claim 7). Here, "changing the opening" means both opening the valve when it exceeds the set value and closing it, and narrowing the valve opening slightly to reduce the flow rate per unit time. including. Further, the "opening time" means the time when the valve is open. That is, shortening the opening time means shortening the time for flowing the flush water by opening the valve, and as a result, the total amount of flush water supplied to the toilet body decreases.

With such a construction, for example, when the water pipe of the urinal is clogged, if the flush water continues to flow as it is, the water level rises and overflows from the body of the urinal. To stop the supply of washing water or reduce the opening degree and the time for which the valve is open to reduce the flow rate per unit time.
It is possible to prevent the toilet body from overflowing.

Further, the control means has a function of detecting the presence or absence of a wash water supply system based on the water level of the liquid accumulated in the trap portion or the toilet body, and further, an alarm is issued based on the detection result. A means for outputting may be provided (Claim 8). In this embodiment, the wash water supply system includes a wash water pipe and a flow rate adjusting valve. Further, it may be configured such that it also includes a cleaning water supply source side such as a tank for storing cleaning water such as water supply on the upstream side and a path from the supply source to the cleaning water pipe.

That is, as a result, if the flush water is correctly supplied to the toilet body as a result, it is judged as normal, and if it is not correctly supplied, it is judged as abnormal, and the cause of the abnormality is specified. is not. Among the abnormalities are, for example, "water cutoff" in which the cleaning water is not supplied and "continuation" in which the cleaning water is continuously supplied. In the present invention, at least one can be detected. Good.

The term "water cutoff" as used herein means not only water cutoff at the base of the wash water such as water supply, but also clogging in the wash water pipe or a valve failure causing the water to remain closed. This includes all cases where the flush water does not flow out from the flush water pipe, that is, the flush water is not supplied to the toilet body.

With this configuration, for example, when there is no change in the water level after urination, it can be determined that the flush water is not being supplied to the toilet body, and it can be determined that the toilet is in a water-off state. If the water level constantly fluctuates, it can be estimated that the wash water is continuously supplied and the valve is in the "open" state, and the valve has failed and remains open. Therefore, by activating the means for issuing an alarm and outputting an alarm, the failure is informed.

[0022]

1 shows a first embodiment of a urinal cleaning system according to the present invention. As shown in the figure, a concave portion 2 is formed at the center of the bottom surface of the toilet body 1 whose front surface receives urine, and the concave portion 2 is formed at the center thereof.
The drainage pipe 3 is integrally formed. The upper end 3 a of the drain pipe 3 is formed so as to project above the bottom surface of the recess 2. Further, the upper end 3a of the water distribution pipe 3 is covered with a cylindrical lid 4 having a downward opening. The recessed portion 2, the water distribution pipe 3 and the lid 4 constitute a trap portion 5.

As is well known, when the liquid flows into the concave portion 2, the trap portion 5 is initially not directly discharged from the water distribution pipe 3 but is liquid (water) in the concave portion 2.
Is stored. Then, when the liquid is accumulated in the recess 2 for a certain amount or more, the further liquid is discharged through the water distribution pipe 3. That is, the liquid that has flowed into the recess 2 flows into the lid 4 through the opening provided at an appropriate position of the lid 4, and advances between the inner surface of the lid 4 and the outer surface of the water pipe 3. When the water level rises and reaches above the upper end 3a of the drain pipe 3, the liquid existing between the water pipe 3 and the lid 4 flows into the water pipe 3 through the upper opening of the drain pipe 3 and is discharged. Has become. Since the conventional configuration can be used as it is, the detailed description of the configuration is omitted.

The tip of the flush water pipe 7 is connected to the inner top surface of the toilet body 1, and a flow rate adjusting valve 8 is arranged in the middle of the flush water pipe 7. Then, when the flow rate adjusting valve 8 is opened, wash water is supplied from the tip of the wash water pipe 7 into the toilet body 1, and when the flow rate adjusting valve 8 is closed, the supply of flush water into the toilet body 1 is stopped. It has become. In this way, the supply / stop of the wash water is performed by opening / closing the valve as in the conventional case.

According to the present invention, the opening of the valve can be adjusted when the valve is open. By adjusting the opening in this way, the flow rate of the washing water flowing per unit time can be adjusted. And
The opening degree is adjusted based on the control signal output from the slight pressure sensor unit 10.

The micro pressure sensor unit 10 includes a semiconductor pressure sensor (micro pressure sensor) and a signal processing circuit for performing a predetermined signal processing on an output signal from the sensor, and determines whether or not the user is in need. , The amount of urine when supplemented,
Whether or not there is an abnormality is discriminated, the opening of the valve is determined according to the discrimination result, and a control signal is sent to the flow rate adjusting valve 8 so as to reach the determined opening. The specific configuration will be described later.

On the other hand, the tip of the pipe 11 (the liquid intake port in the trap portion 5) is attached so as to open in the trap portion 5. The mounting position of the pipe 11 is set below the water level of the fluid accumulated in the trap portion 5 in normal times. As a result, a part of the liquid existing in the trap portion 5 enters the pipe 11, and the water level in the pipe 11 also rises and follows the rise and fall of the water level in the trap portion 5. As a result, both parties 5, 1
The water level of 1 becomes the same.

Then, the opposite end of the pipe 11 is connected to the inlet of the upper slight pressure sensor unit 10.
With such a configuration, the liquid in the trap portion 5 also enters the pipe 11, and the air remaining above the pipe 11 exists in the closed space surrounded by the liquid and the slight pressure sensor unit 10. It will be. Therefore, when the water level of the trap portion 5 rises, the water level of the pipe 11 also rises accordingly, so that the volume of the closed space decreases and the pressure in the closed space rises. Conversely, when the water level drops, the pressure in the enclosed space decreases. Therefore, since the semiconductor pressure sensor (micro pressure sensor) in the sensor unit 10 can detect the pressure change due to the fluctuation of the water level, the water level can be obtained from the output of the semiconductor pressure sensor. In addition, for example, when the water surface is fluctuating (wavy), the water level fluctuates in small increments, so the output of the semiconductor pressure sensor also has an oscillating waveform. Based on such sensor output, the state of the liquid in the toilet body 1 (trap portion 5) can be determined.

FIG. 2 shows an example of the internal structure of the slight pressure sensor unit 10 for making such determination. As shown in the figure, the slight pressure sensor unit 10
Causes the pressure introducing pipe 13a to protrude to the outside of the case 14,
The upper end of the pipe 11 is attached to the pressure introducing pipe 13a. Then, the pressure introducing pipe 13a is integrally connected to the semiconductor pressure sensor in the slight pressure sensor unit 13, whereby the air in the pipe 11 is supplied into the pressure chamber (not shown) of the semiconductor pressure sensor. It has become so. Therefore, the change in the liquid level can be detected by the slight pressure sensor unit 13, converted into an electric signal and output.

The output signal of the slight pressure sensor unit 13 is supplied to the high pass filter (HPF) 15 and the setting comparison circuit 16, respectively. HPF1
In 5, the characteristic amount (signal corresponding to the pressure value) based on the minute liquid level change is extracted and sent to the waveform discriminating circuit 17 in the next stage. The waveform discriminating circuit 17 determines whether or not supplementation is performed based on the given pressure information, that is, liquid level information (water level), and when supplementation is performed, calculates the urine volume thereof, and The calculation result is output to the valve control circuit 18.

Then, the valve control circuit 18 determines the amount of wash water based on the given data regarding the amount of urine,
A control signal is output to the flow rate adjusting valve 8 by obtaining the required valve opening. That is, when the amount of urine is small, the amount of washing water may be small, so the opening is made small. On the contrary, when the amount of urine is large, the opening is made large so that the amount of washing water is also large. decide. Then, the determination of the opening degree may be made by, for example, creating a table in which the relationship between the urine volume and the opening degree is paired and referring to the table, or expressing the relationship between the two by an equation. , May be obtained by substituting the urine amount into the calculation formula, and various methods can be adopted.

Further, in place of the flow rate adjusting valve 8 as described above, a normal opening / closing valve (the opening cannot be adjusted) may be used. In such a case, the total amount of wash water to be supplied may be changed according to the amount of urine by adjusting the time during which wash water is flowing.

On the other hand, in the setting comparison circuit 16, the current water level data (pressure value) is compared with the water level overflowing from the toilet body 1 to the outside. Is output to the alarm output circuit 19. The internal structure of the setting comparison circuit 16 can basically be composed of a comparator. That is, the current water level data is equivalent to the pressure, and an electric signal corresponding to the pressure is output from the micro pressure sensor unit 13, so that the signal is connected to one input terminal of the comparator. Since the water level at the time of overflowing the toilet body 1, that is, the electric signal based on the pressure is known, a value lower than that by a certain margin is applied to the other input terminal of the comparator as a set value. . As a result, when the sensor output exceeds the set value, the output of the comparator becomes H and an abnormal signal can be output.

Then, the valve control circuit 18, which receives the abnormal signal from the setting comparison circuit 16, controls the flow rate adjusting valve 8 to "open = 0 (close the valve)" in order to prevent the valve from overflowing. Emit a signal. Further, the alarm output circuit 19 which receives the abnormal signal from the setting comparison circuit 16 sounds a buzzer or issues an alarm signal to a remote monitoring room by wire / wireless, and the message "The urinal has failed and overflowed. There is a risk of overflow / overflow. "

Further, as the setting comparison circuit 16, a plurality of comparators are provided in parallel with respect to the input, and different set values are given to the respective comparators, whereby an alarm can be issued stepwise according to the water level. Becomes And by outputting in stages like this, the water level rises abnormally,
If there is a margin before it overflows, narrow the valve opening to reduce the amount of water per unit time,
When the water level further rises, the valve opening degree can be adjusted in various ways, such as by closing the valve.

An example of the internal structure of the above-mentioned waveform discriminating circuit 17 is shown in FIG. That is, when an example of the sensor output signal (after HPF) is shown, there are a supplemental waveform as shown in FIG. 4 (A) and a disturbance signal as shown in FIG. 4 (B).

As shown in FIG. 7A, when the user is urinating, urine accumulates in the trap portion 5 as urination progresses, so that the water level in the trap portion 5 rises and the pressure also rises. The sensor output also rises. It should be noted that, when the experiment was repeated, and when the liquid (water) was relatively accumulated in the trap portion 5, the trajectory shown by the solid line was taken, and the liquid was not accumulated in the trap portion 5 (evaporated). ), It was found that the trajectory follows a broken line. In either case, urination is started from the 0 point position, and urination is stopped after a certain period of time. Although there is a difference in the waveform immediately before and after the completion of urination, the characteristics that the pressure (water level) gradually increases at the start of urination are common in both cases.

Further, as shown in FIG. 6B, in the case of mischief or other disturbance, the liquid level of the trap portion 5 fluctuates but the water level does not rise, so the output waveform vibrates and the disturbance When the temperature subsides, it returns to the original water level (pressure). During vibration, the value may be lower than the value at the start (reference value).

Therefore, in this example, the waveform discrimination circuit 17
Distinguishing between the two states shown in FIGS. 4 (A) and 4 (B),
When urination is detected as shown in FIG. 7A, the urine volume is measured. That is, from the received liquid level data (output of the HPF 15), the sampling circuit 17a
At, a concrete detection value is acquired at a constant sampling interval. The result is then passed through the differentiating circuit 17b to the first
It is given to the setting comparison circuit 17c.

If the output (differential value) of the differentiating circuit 17b is larger than the set value of the first setting comparing circuit 17c, the switch S1
Is closed and the input of the integration circuit 17d is turned on, and the output value of the sampling circuit 17a is integrated by the integration circuit 17d.
Then, this integration is the output (differential value) of the differentiating circuit 17b.
Will continue until the value becomes less than the set value. That is, when urination is started, as shown in FIG. 4 (A), the sensor output also rises as the water level rises, so the differentiation circuit 17b detects the rise.

That is, when the integrated value becomes larger than the set value of the first setting comparison circuit 17c, the urination starts (although there is a slight time lag), and the subsequent rise in the water level can be regarded as urination. By integrating the data (water level) according to the sensor output, the urine volume up to that time can be obtained. Then, when the differential value becomes equal to or less than the set value, it can be considered that the urination is stopped for about 3 seconds in FIG. 4A. Therefore, the total urine volume that has been supplemented can be obtained by adding up to such time. The obtained urine volume is output to the outside via the switch S2.

The switch S1 is a normally open contact, and is closed based on the output signal of the first setting comparison circuit 17c. On the other hand, the switch S2 is a normally closed contact and normally outputs the output of the integrating circuit 17d as it is. When the second setting comparing circuit 17e determines that the liquid level data is a disturbance signal, the switch S2 is opened to stop the output and the integrated value of the integrating circuit is cleared.

Then, the second setting comparison circuit 17e is
For example, it can be configured by a window comparator. That is, for each waveform shown in FIG. 4, when the upper and lower set values (threshold values) Th1 and Th2 are appropriately selected as shown in FIG. 5, the waveform based on urination (FIG. 5 (A)) is 2 Although it exists between the two set values Th1 and Th2, the waveform based on the disturbance (FIG. 5B) exceeds the range of the set values Th1 and Th2. Therefore, when the two set values Th1 and Th2 are set to the discrimination level in the window comparator, the output value of the sampling circuit 17a may exceed at least one set value in the case of the disturbance waveform.
It can be determined that it is a disturbance, and the output of the comparator can be used as a detection signal.

Further, the determination as to whether or not the waveform is the disturbance waveform is not limited to the above-mentioned one, but can be made based on the magnitude of the rate of change of the waveform as shown in FIG. 6, for example.
That is, as is clear from comparison between (A) and (B) in the same figure, the rate of change of the disturbance waveform (the inclination / differential value of the arrow in the figure) is greater in both cases of increase and decrease. Therefore, for example, the output of the differentiating circuit 17b is received, or a differentiating circuit is separately included to obtain a differentiating value, and the differentiating value (positive or negative) is discriminated by using the window comparator or the like as described above to obtain a constant value. When exceeding, it may be determined to be a disturbance waveform.

Furthermore, as shown in FIG. 7, the waveform can be sampled to determine the waveform. The output from the sampling circuit 17a is, for example, as shown by a white circle in FIG. 7 (in the illustrated example, the sampling time is 0.5).
Seconds, but in reality, data is acquired at finer intervals). As can be seen from the figure, when the value at the start of urination is set as the reference value K, the sampling value gradually increases as shown in FIG. Will always be bigger than. On the other hand, as shown in FIG. 6B, in the case of a disturbance, the liquid level fluctuates, so that it may be lower than when the vibration started and the sampling value may be lower than the reference value K. Therefore, when the sample value becomes lower than the reference value K within a relatively short time after the start of integration, it can be determined that the waveform is the disturbance waveform.

With the above construction, the pressure sensor is completely invisible to the user, so that no mischief can be made, and the appearance is good and the design is excellent. Further, it is possible to save water by measuring the liquid level change and the water level by the waveform discrimination processing, calculating the urine volume of each user from the liquid level change, and changing the wash water volume. Further, it can be judged that the distribution pipe is clogged due to an abnormal rise in water level data, and the amount of washing water can be reduced to prevent overflow to the outside.

Furthermore, if there is a continuous change in the liquid level from the sensor output, it can be determined that water has been left due to a valve failure. On the contrary, if no change is recognized, it can be determined that the wash water is not output, that is, the water supply pipe is clogged. It is preferable to add a function for making such a determination because more accurate and precise state determination can be performed.

In other words, in this example, the urine volume is calculated from the usage time and the amount of increase / decrease of the liquid level, and the opening degree and / or opening / closing time of the valve are determined. Then, when the water level rises more than necessary and the pressure rises more than necessary, it is determined that the water distribution pipe is clogged, and the valve opening time can be shortened or the valve can be closed. When the pressure set value is further exceeded, an alarm can be issued.
Also, after confirming that there is extra charge, if no change in the liquid level can be detected even if the valve is opened, it can be judged that the washing water is out of water and an alarm can be issued.

FIG. 8 shows a second embodiment of the present invention. In the present embodiment, the basic configuration is the same as that of the first embodiment shown in FIG. 1, and in the middle of the pipe 11 connected to the slight pressure sensor unit 10, preferably, the slight pressure sensor inlet port. The difference is that a filter 20 that blocks the passage of liquid is installed before. Then, the filter 20
For example, a material such as GORE-TEX (registered trademark) that allows passage of air but blocks passage of water or other liquid can be used.

With such a structure, the trap section 5
It is possible to prevent water and other liquids from entering the sensor and prevent malfunction of the sensor output and failure of the signal processing circuit due to water entering the pressure chamber of the semiconductor pressure sensor. It has become. Since the other configurations and effects are the same as those of the first embodiment described above, the same reference numerals are given and the description thereof is omitted.

FIG. 9 shows a third embodiment of the present invention. This embodiment is based on the above-described second embodiment. Then, a washing pipe 22 is branched from the washing water pipe 7 on the downstream side of the flow rate adjusting valve 8, and the tip (lower end) 22a of the washing pipe 22 is the pipe 11 described above.
I am trying to connect to. At this time, the connecting position of both pipes 22 and 11 is near the trap portion 5.

With this construction, when the flow rate adjusting valve 8 is opened and a predetermined amount of cleaning water is supplied to the toilet body 1 through the cleaning water pipe 7, part of the cleaning water is used for cleaning. The washing water flows into the pipe 22 side, and the cleaning water is supplied to the tip portion 11a of the pipe 11 on the trap portion 5 side and is drained to the trap portion 5 side. As a result, urine and other foreign substances that have entered the pipe 11 during supplementation are forcibly discharged to the trap portion 5 side by the wash water, so that clogging that occurs between the trap portion 5 and the pipe 11 is eliminated. be able to. In addition, other configurations and operational effects are the same as those of the above-described embodiments.

FIG. 10 shows a fourth embodiment of the present invention. In the present embodiment, similar to the above-described third embodiment, clogging of the pipe is prevented. That is, the cleaning pipe 22 'branched from the cleaning water pipe 7 is drawn around and connected at a predetermined position below the pipe 11. That is, as compared with the third embodiment, the connection is made on the slightly upstream side (sensor side) of the pipe 11.

With this structure, the cleaning liquid can be supplied to the lower portion 11b of the pipe 11, so that the lower portion 11b can be washed with the cleaning water to prevent clogging. That is, in the third embodiment, the occurrence of clogging in the vicinity of the trap portion is prevented, but in the present embodiment, not only in the vicinity of the trap portion 5, but also in the inside of the pipe 11. To prevent this. Note that the other configurations and operational effects are the same as those of the above-described respective embodiments, and thus the description thereof will be omitted.

FIG. 11 shows a fifth embodiment of the present invention. In this embodiment, based on the above-described second embodiment, the trap 25 is formed by bending the middle of the pipe 11 ′ into a U-shape and an inverted U-shape. Then, the liquid silicone 26 is filled inside the trap 25.
As a result, since the silicone 26 has excellent chemical resistance, even if a gas such as ammonia in urine rises through the pipe 11 ', the ammonia 26 is blocked by the silicone 26 and the further rise is suppressed. can do. Therefore, it is possible to suppress the transmission of ammonia and the like to the side of the slight pressure sensor unit 10.

Since the silicone 26 is in a liquid state depending on the degree of polymerization, the kind of side group and the degree of crosslinking, when the water level rises, the silicone 26 and the tip side of the pipe 11 'will be in contact with each other.
Since the air existing between the two is compressed, the silicone 26 moves upward, and the air between the silicone 26 and the slight pressure sensor unit 10 is compressed accordingly.
A sensor inside the unit can detect the pressure change. Note that the other configurations and operational effects are the same as those of the above-described respective embodiments, and thus the description thereof will be omitted.

If the pressure can be transmitted above and below the silicone 26, grease-like silicone can also be used.
In addition, since silicone is also excellent in water repellency, it is possible to prevent the liquid from moving above the silicone. Therefore, in the illustrated example, the filter 2
Although 0 is installed, the function of the filter 20 can also be used, and an effect similar to that of providing the filter 20 can be obtained without providing the filter 20. In addition, the trap 25 is not limited to silicone as long as it can prevent an unnecessary gas such as ammonia from rising, and other substances may be filled in the trap 25 as a blocking material.

Further, the structure in which the trap 25 filled with the silicone 26 is provided can be applied to each of the above-described embodiments. That is, the cleaning pipe 22 is connected to the pipe 1
By combining the third embodiment and the sixth embodiment, which are merged at the tip of 1 ', a configuration as shown in FIG. 12 can be adopted.

Similarly, the cleaning pipe 2 is provided on the upstream side of the pipe 11 '.
By combining the fourth embodiment and the sixth embodiment, which are configured to be connected to the No. 2, the configuration shown in FIG. 13 can be adopted.

As described above, the respective embodiments can be appropriately combined. Furthermore, although not shown in the drawings, in each of the third and subsequent embodiments, the pipes 11,
Although the example in which the filter 20 is provided in 11 'is shown, of course, the filter 20 may not be provided as in the first embodiment.

[0061]

As described above, in the urinal cleaning system according to the present invention, the pressure sensor detects a change in the water level in the trap portion, and the cleaning water is caused to flow according to the detection result. It is possible to flow the wash water suitable for the situation, prevent mischief, overflow to the outside, abnormal water warning of running out of wash water, and water saving.

Further, since the pressure sensor for detecting the presence or absence of extra use can be installed inside, it is possible to prevent the sensor from being exposed to the outside, prevent the sensor from being directly touched and damaged, and also have good design. Becomes

Further, according to the second to fifth aspects, it is possible to prevent unnecessary gas such as liquid and / or ammonia from entering the inside of the sensor or the like, and to prevent clogging of the pipe.・ Can be demonstrated.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a urinal cleaning system according to the present invention.

FIG. 2 is a diagram showing an internal configuration of the slight pressure sensor unit.

FIG. 3 is a diagram showing an internal configuration of a waveform discrimination circuit.

FIG. 4 is a diagram showing an example of a sensor output.

FIG. 5 is a diagram illustrating an operation principle of a waveform determination circuit.

FIG. 6 is a diagram illustrating an operation principle of a waveform determination circuit.

FIG. 7 is a diagram illustrating an operation principle of a waveform determination circuit.

FIG. 8 is a view showing a second embodiment of the urinal cleaning system according to the present invention.

FIG. 9 is a diagram showing a third embodiment of the urinal cleaning system according to the present invention.

FIG. 10 is a view showing a fourth embodiment of the urinal cleaning system according to the present invention.

FIG. 11 is a view showing a fifth embodiment of the urinal cleaning system according to the present invention.

FIG. 12 is a view showing a modified example of the urinal cleaning system according to the present invention.

FIG. 13 is a view showing a modified example of the urinal cleaning system according to the present invention.

[Explanation of symbols]

1 Toilet body 5 Trap section 7 Cleaning water piping 8 Flow rate adjustment valve (valve) 10 Micro pressure sensor unit 11,11 'Piping (pipe line) 13 Micro pressure sensor (pressure sensor) 16 Setting comparison circuit (comparison means) 17 Waveform discrimination circuit (discrimination means, means for detecting urine volume) 20 filters 22,22 'Cleaning tube 25 traps 26 Silicone (blocking material)

─────────────────────────────────────────────────── ─── Continuation of front page (72) Masayuki Maeda, 10 Ouron Co., Ltd., Hanazono Todocho, Ukyo-ku, Kyoto City, Kyoto Prefecture (56) References JP-A-7-189315 (JP, A) JP-A-8- 13585 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E03D 13/00 E03D 5/10

Claims (8)

(57) [Claims] 1. A small unit comprising a trap portion formed on the inner bottom surface of the toilet body for temporarily storing a predetermined amount of liquid, and a flush water pipe with a valve for supplying flush water to the toilet body. A cleaning system for a urinal, which is installed in a toilet bowl and controls opening / closing of a valve thereof, wherein a pressure sensor is installed above the trap section, and a pipe line connecting the trap section and a pressure guiding section of the pressure sensor. And the liquid in the trap portion is allowed to enter the pipe passage, and the liquid level change of the trap portion is detected by the pressure sensor through the gas blocked in the pipe passage, depending on the detection result. A cleaning system for urinals, characterized in that a control means for controlling the opening and closing of the valve is provided. 2. A washing pipe branching from the washing water pipe located on the downstream side of the valve is provided, the washing pipe is connected to a predetermined position of the pipe passage, and the washing water is provided in the pipe passage. The urinal cleaning system according to claim 1, wherein a part of the urinal can be supplied. 3. The urinal cleaning system according to claim 1, wherein a water resistant filter is provided in the middle of the pipeline. 4. A trap having a substantially U-shaped curve is provided in the middle of the pipeline, and a predetermined blocking material is filled in the trap, and the blocking material blocks passage of gas such as liquid silicone. In addition, the urinal cleaning system according to any one of claims 1 to 3, wherein the urinal cleaning system is movable in the pipeline according to the pressure. 5. The control means includes a determination means for determining whether or not urination is based on the output of the pressure sensor, and when the determination result is urination, the valve is opened to flush the flush water. The cleaning system for a urinal according to claim 1, wherein the cleaning system is supplied into the body. 6. The urinal cleaning as claimed in claim 5, wherein the control means further comprises means for detecting the amount of urine excreted, and the amount of the wash water supplied is adjusted according to the amount of urine. system. 7. The control means comprises a comparing means for determining whether or not the water level of the liquid accumulated in the trap portion or the toilet body exceeds a set value, and depending on whether or not the set value exceeds the set value, The urinal cleaning system according to claim 1, wherein at least one of an opening degree and an opening time of the valve is changed. 8. The control means has a function of detecting the presence or absence of an abnormality in the flush water supply system based on the water level of the liquid accumulated in the trap portion or the toilet body, and further based on the detection result. The urinal cleaning system according to claim 1, further comprising means for outputting an alarm.