JPH1037284A - Cleaning system for urinal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning system dashing an appropriate quantity of cleaning water in accordance with use conditions and preventing the cleaning water from overflowing to the outside. SOLUTION: A sensor unit 10 in which a pressure sensor and a signal processing circuit are built-in, is installed at the upper side than a trap 5 formed at the inside bottom face of an urinal body 1. The trap is connected to the pressure guide part of the pressure sensor. On urinating, as the water level of the trap 5 rises and also the water level in the pipe 11 increases, the pressure in the pipe 11 increases in accordance with the water level. And hence, when the pressure is detected by the sensor, the water level is also detected and it is detected whether someone has urinated or not. When someone has urinated, the valve 8 is opened and cleaning water is supplied into the urinal body 1 through the cleaning water pipe 7. When the water level is integrated, as the urine volume is calculated, the cleaning water without useless volume can be used in accordance with the urine volume and hence, water is economized. When the water level rises abnormally, the valve is closed to prevent water from overflowing from the urinal body 1.

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 clean a toilet body which receives urination after adding a toilet, washing water (generally, Normal water is used).

In order to flush the flush water, the user presses the push button of the urinal flush valve attached to the upper part of the toilet body, so that a certain amount of flush water flows out and then stops. There is something like that. However, when the pressing condition of the user is set as the starting condition, the cleaning cannot be performed if the user forgets to press the button. Further, there is a possibility that the push button may be depressed more than necessary due to mischief or the like, and there is a problem that the washing water is wasted. Furthermore, there is a problem that the work itself pressed by a person after use is complicated.

[0004] To solve the above problem,
For example, an infrared sensor is installed above the urinal, and if a person stops in front of the urinal for a certain period of time, it detects that the person has left the urinal and then flushes a certain amount of washing water. Some are made to flow. In such a system,
There is no need for a person to press the push button each time,
Since the washing water flows automatically when a person leaves after use, there is an advantage that washing is not forgotten.

[0005]

However, in the above-described cleaning system using an infrared sensor, since the sensor unit is installed at a position where it can be seen from the outside, it is necessary to hold a hand or the like in front of the sensor unit for a certain period of time. After all, if the hand is released afterwards, a sensor output similar to that obtained when a person adds a small work is obtained, and there is a possibility that washing water may flow. Further, there is a possibility that the sensor unit itself may be depressed and damaged. Thus, it is easy to be mischievous.

Further, when a short person such as a child uses the washing water, the washing water cannot be detected, and there is a possibility that the washing water cannot be automatically flowed where the washing water has to be flown. In addition, for example, if the user was standing for a certain time in front of the urinal with the intention of adding a toilet, but after all leaving the urinal without adding the toilet, since the toilet body is not dirty from the viewpoint of saving water, etc. It is not necessary to flow, but in the case of a system using a conventional infrared sensor, the cleaning water flows. As described above, there is a problem that an operation suitable for the use state such as the presence or absence of actual small use may not be performed.

Further, since the sensor is exposed, there is a sense of incongruity in terms of design. In addition, since water flows depending on the presence or absence of the user, even if, for example, the water distribution pipe is clogged, a certain amount of washing water flows, and there is a possibility that the water overflows outside the toilet body. Furthermore, since the amount of urine added by each user cannot be detected, a constant amount of washing water is constantly supplied, resulting in much waste. Furthermore, naturally, it is not possible to detect the interruption of the washing water or the remaining water.

[0008] The present invention has been made in view of the above background, and an object of the present invention is to solve the above-mentioned problems, and to allow washing water to be applied in accordance with a use state.
In addition, it can prevent mischief, prevent overflow to the outside, alert the user of water loss or running out of water, and conserve water.Furthermore, the sensor for detecting the presence or absence of extra water is not exposed to the outside. It is an object of the present invention to provide a urinal flushing system which is prevented from being directly touched and damaged, and has a good design.

[0009]

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

[0010] When the replenishment is performed, the urine collected in the trap portion accumulates, 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 the pressure increase using the pressure sensor. Therefore, when the control means opens the valve based on the detection result, the washing water flows. The pressure sensor can detect the presence or absence of urination, so it works even if you are short like a child, there is no malfunction due to holding your hand etc. like an infrared sensor, and the sensor can be installed inside, causing damage Possibility is low and it is hard to be mischievous. In addition, the pipe line may be one pipe 11 as shown in the embodiment,
What connected a plurality of members may be used. Then, as shown below, when a filter or a trap is mounted, the pipes 11 and 1 referred to in the embodiment for allowing liquid and air to pass therethrough.
1 'and the piping including the filters and the like.

Also, a washing pipe branched from the washing water pipe located downstream of the valve is provided, and 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 to be able to supply a part of the (claim 2). That is, even if foreign matter is present in the piping, it is forcibly discharged by the washing water. The connecting portion of the cleaning pipe to the pipe may be located near the trap portion, which is the tip of the pipe, or at a predetermined position above it, or at the above-mentioned tank, or at any position. Can be.

In each of the above examples, a water-resistant filter is preferably provided in the middle of the piping. With this configuration, it is possible to prevent a liquid such as water from rising, and to prevent malfunction or failure of the sensor.

In addition, a trap which is curved in a substantially U-shape is provided in the middle of the pipe passage, and a predetermined blocking material is filled in the trap, and the blocking material blocks passage of a gas such as liquid silicone. It is more preferable to be able to move in the piping according to the pressure (claim 4). With such a configuration, even if ammonia mixed into urine moves upward in the piping, further increase can be prevented by the blocking material, so that adverse effects on the pressure sensor and the control means can be prevented.

[0014] On the other hand, the control means includes a discriminating means for discriminating whether or not urination is performed based on an 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).

It is more preferable that the control means further comprises means for detecting the amount of urine discharged, and the amount of the supplied washing water is adjusted in accordance with the amount of urine. With this configuration, when the amount of urine is large, the amount of washing water can be increased accordingly, and when the amount of urine is small, the amount of washing water can be decreased. Thereby, it is not necessary to flow a large amount of washing water unnecessarily, and a water saving effect can be expected.

Further, the control means includes comparison means for judging whether or not the liquid level of the liquid accumulated in the trap portion or the toilet body has exceeded a set value. At least one of the opening degree and the opening time of the valve may be changed. Here, "changing the opening degree" means both changing the valve from the open state to the closed state when the set value is exceeded, and slightly reducing the opening degree of the valve to reduce the flow rate per unit time. including. Further, “open time” means the time during which the valve is open. In other words, shortening the opening time means shortening the time during which the valve is opened to flow the flush water, and as a result, the total flush water amount supplied to the toilet body is reduced.

With this configuration, for example, when the water distribution pipe of the urinal is clogged, if the flushing water continues to flow as it is, the water level rises and overflows from the toilet body. By closing and stopping the supply of cleaning water, or by reducing the opening degree and the time during which the valve is open to reduce the flow rate per unit time,
It can be prevented from overflowing from the toilet body.

Further, the control means has a function of detecting the presence or absence of a washing water supply system based on the water level of the liquid accumulated in the trap section or the toilet body, and furthermore, an alarm based on the detection result. An output means may be provided (claim 8). Here, the washing water supply system in the embodiment includes a washing water pipe and a flow rate adjustment valve. Furthermore, a cleaning water supply source side such as a tank for storing cleaning water such as an upstream water supply, and a path from the supply source to the cleaning water pipe may be included.

In other words, the point is that if the washing water is correctly supplied to the toilet body as a result, it is determined to be normal, and if the cleaning water is not correctly supplied, it is determined to be abnormal, and the cause of the abnormality is specified. is not. Among the abnormalities, for example, there are "water cutoff" in which the cleaning water is not supplied, and "detention" in which the cleaning water is continuously supplied. In the present invention, at least one is detected. Good.

The term "water cutoff" as used herein means not only the water cutoff of the washing water such as water supply, but also the clogging of the washing water pipe or the closing of the valve due to the failure of the valve. This includes all cases in which washing water does not flow out from the washing water pipe, that is, a state in which washing water is not supplied to the toilet body.

With this configuration, for example, if there is no change in the water level after urination, it can be determined that the flush water has not been supplied to the toilet body, and it can be determined that the toilet is in a water-cut state. Further, when the water level is constantly changing, it can be estimated that the washing water is being supplied continuously, and that the valve is broken and the valve remains open. Therefore, by operating the alarming means and outputting an alarm, it is notified that a failure has occurred.

[0022]

FIG. 1 shows a urinal cleaning system according to a first embodiment of 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 which is open to the front and receives urine.
The drain pipe 3 is formed integrally. The upper end 3 a of the drain pipe 3 is formed to protrude 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 opened downward. The concave portion 2, the water pipe 3 and the lid 4 constitute a trap section 5.

As is well known, when a liquid flows into the concave portion 2, the trap portion 5 does not discharge the liquid (water) into the concave portion 2 without initially discharging the liquid from the water pipe 3.
Will be stored. When a certain amount or more of the liquid accumulates in the concave portion 2, the excess liquid is discharged through the water pipe 3. That is, the liquid that has flowed into the concave portion 2 flows into the lid 4 through an opening provided at an appropriate position of the lid 4, and proceeds between the inner surface of the lid 4 and the outer surface of the water distribution pipe 3. Then, when the water level rises and reaches above the upper end 3a of the drain pipe 3, the liquid existing between the drain pipe 3 and the lid 4 flows into the drain pipe 3 from the upper opening of the drain pipe 3 and is discharged. Has become. Note that a conventional configuration can be used as it is, and a detailed description of the configuration will be omitted.

Further, the top of the flush water pipe 7 is connected to the inner top surface of the toilet body 1, and a flow regulating valve 8 is arranged in the middle of the flush water pipe 7. When the flow control valve 8 is opened, the flush water is supplied into the toilet body 1 from the tip of the flush water pipe 7, and when the flow control valve 8 is closed, the supply of the wash water into the toilet body 1 is stopped. It has become. The supply / stop of the cleaning water by opening / closing the valve in this manner is the same as in the related art.

Here, according to the present invention, when the valve is open, its opening can be adjusted. By adjusting the opening degree 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 a control signal output from the micro-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 predetermined signal processing on an output signal from the sensor. , Urine volume when added,
The presence or absence of an abnormality is determined, the opening of the valve is determined according to the determination result, and a control signal is sent to the flow rate adjusting valve 8 so as to achieve the determined opening. The specific configuration will be described later.

On the other hand, a tip of the pipe 11 (a liquid inlet in the trap portion 5) is attached so as to open to the trap portion 5. The pipe 11 is installed at a position lower than the water level of the fluid stored in the trap section 5 in normal times. As a result, a part of the liquid existing in the trap section 5 enters the pipe 11, and the water level in the pipe 11 rises and falls following the rise and fall of the water level in the trap section 5. As a result, both 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 minute 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 a closed space surrounded by the liquid and the small pressure sensor unit 10. Will be. Therefore, when the water level of the trap portion 5 rises, the water level of the pipe 11 rises accordingly, so that the volume of the closed space is reduced and the pressure in the closed space increases. Conversely, when the water level drops, the pressure in the enclosed space decreases. Therefore, the pressure change due to the fluctuation of the water level can be detected by the semiconductor pressure sensor (small pressure sensor) in the sensor unit 10, so that the water level can be obtained from the output of the semiconductor pressure sensor. Further, for example, when the water surface is fluctuating (wavy), the water level fluctuates little by little, so that the output of the semiconductor pressure sensor also has a vibration waveform. Based on such sensor outputs, the state of the liquid in the toilet body 1 (trap section 5) can be determined.

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

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

Then, the valve control circuit 18 determines the amount of washing water based on the given data on the amount of urine,
A control signal is output to the flow control valve 8 in order to obtain a necessary valve opening. That is, when the urine volume is small, the opening amount is small because the amount of washing water may be small. Conversely, when the urine volume is large, the opening amount is increased to increase the washing water amount. decide. The opening degree may be determined by, for example, creating a table in which the relationship between the urine volume and the opening degree is created and referring to the table, or expressing the relationship between the two by an equation. Alternatively, it may be determined by substituting the urine amount into the arithmetic expression, and various methods can be adopted.

Instead of such a flow control valve 8, a normal opening / closing valve (the opening degree cannot be adjusted) may be used. In such a case, the total amount of washing water to be supplied may be changed according to the amount of urine by adjusting the time during which the washing water is flowing.

On the other hand, the setting comparison circuit 16 compares the current water level data (pressure value) with the water level overflowing from the toilet body 1 and, if it is likely to overflow, sends an abnormal signal to the valve control circuit 18. Is output to the alarm output circuit 19. The internal configuration of the setting comparison circuit 16 can be basically configured by a comparator. That is, the data of the current water level is equivalent to the pressure, and an electric signal corresponding to the pressure is output from the micro pressure sensor unit 13. Therefore, the signal is connected to one input terminal of the comparator. Since the electric signal based on the water level, that is, the pressure when the water overflows from the toilet main body 1 is known, a value lower than that by a certain margin is given to the other input terminal of the comparator as a set value. . Accordingly, when the sensor output exceeds the set value, the output of the comparator becomes H, and an abnormal signal can be output.

When the valve control circuit 18 receives the abnormal signal from the setting comparison circuit 16, the valve control circuit 18 controls the flow control valve 8 such that "opening degree = 0 (closes the valve)" in order to prevent overflow. Emits a signal. Further, the alarm output circuit 19, which has received the abnormal signal from the setting comparison circuit 16, sounds a buzzer or issues an alarm signal to a monitoring room at a remote place by wire or wirelessly. Or may overflow ".

Further, by providing a plurality of comparators in parallel with the input as the setting comparison circuit 16 and making the setting values given to the respective comparators different, it is possible to issue a warning stepwise according to the water level. Becomes And the water level rises abnormally by outputting stepwise like this,
If there is room before overflow, narrow the valve opening to reduce the amount of water per unit time,
Further, when the water level rises, the opening degree of the valve can be variously adjusted according to the state, such as closing the valve.

FIG. 3 shows an example of the internal configuration of the waveform discriminating circuit 17 described above. That is, as an example of the sensor output signal (after the HPF), there are an additional waveform as shown in FIG. 4A and a disturbance signal as shown in FIG. 4B.

As shown in FIG. 3A, when the user is busy, urine accumulates in the trap portion 5 as urination proceeds, so that the water level in the trap portion 5 rises and the pressure also rises. The sensor output also increases. It should be noted that, when the experiment was repeated, if a relatively large amount of liquid (water) had already accumulated in the trap portion 5, a trajectory like a solid line was taken, and no liquid was accumulated in the trap portion 5 (evaporated. In the case, it was found that a locus like a broken line was taken. In each case, urination is started from the zero point position and stopped after a certain period of time. There are differences in the waveforms immediately before and after the end of urination, but in both cases, the feature that the pressure (water level) gradually increases at the start of urination is common.

As shown in FIG. 2B, 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 that the output waveform oscillates and the disturbance is generated. When it stops, it returns to the original water level (pressure). During the vibration, the value may be lower than the value at the start (reference value).

Therefore, in this example, the waveform discriminating circuit 17
By discriminating the two types of states shown in FIGS. 4A and 4B,
When urination is detected as shown in FIG. 7A, the urine volume is measured. That is, based on the received liquid level data (output of the HPF 15), the sampling circuit 17a
, A specific detection value is acquired at a constant sampling interval. Then, the result is transmitted to the first through the differentiating circuit 17b.
This 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, 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.
The integration is performed by the output (differential value) of the differentiating circuit 17b.
Is continued until the value falls below 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 that the rise is detected by the differentiating circuit 17b.

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

The switch S1 is a normally open contact, and closes 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 integration circuit 17d as it is. When the liquid level data is determined to be a disturbance signal by the second setting comparison circuit 17e, the switch S2 is opened to stop the output and clear the integrated value of the integration circuit.

The second setting comparison circuit 17e
For example, it can be constituted by a window comparator. That is, as shown in FIG. 5, when the upper and lower set values (thresholds) Th1 and Th2 are appropriately selected as shown in FIG. 4, the waveform based on urination (FIG. 5A) becomes 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, if 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 a disturbance waveform,
A disturbance can be determined, and the output of the comparator can be used as a detection signal.

The determination of whether or not the waveform is a disturbance waveform is not limited to the above-described one. For example, as shown in FIG. 6, the determination can be made based on the magnitude of the change rate of the waveform.
That is, as is clear from comparison between FIGS. 7A and 7B, the rate of change of the disturbance waveform (inclination and differential value of the arrow in the figure) is larger 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 provided to obtain a differential value, and the differential value (positive or negative) is discriminated using the above-described window comparator or the like to obtain a constant value. When the value exceeds, the waveform may be determined as a disturbance waveform.

Further, as shown in FIG. 7, the waveform can be sampled to determine the waveform. The output from the sampling circuit 17a is, for example, indicated by a white circle in FIG. 7 (in the illustrated example, the sampling time is 0.5
Seconds, but in fact it gets the data at finer intervals.) As is clear from the figure, when the value at the start of urination is set to the reference value K, in the case of supplementation, the sampling value gradually increases as shown in FIG. Is always greater than On the other hand, as shown in FIG. 3B, in the case of a disturbance, the liquid level may fluctuate because of the fluctuation of the liquid level, and the sampling value may be lower than the reference value K. Therefore, if the sample value becomes lower than the reference value K within a relatively short time from the start of integration, it can be determined that the waveform is a disturbance waveform.

With the above configuration, since the pressure sensor is completely invisible to the user or the like, no mischief can be performed, and the pressure sensor is easy to see and excellent in design. Further, the liquid level change and the water level are measured by the waveform discrimination processing, the urine amount of each user is calculated from the liquid level change, and the washing water amount is changed to save water. In addition, it is possible to judge that the distribution pipe is clogged due to the abnormal rise of the water level data, to reduce the amount of washing water, and to prevent overflow to the outside.

Further, if there is a continuous change in the liquid level from the sensor output, it can be determined that the water is not flowing due to a valve failure. Conversely, when no fluctuation is recognized, it can be determined that the washing water is not output, that is, the water 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 amount of urine is calculated from the use time and the increase / decrease of the liquid level, and the opening degree and / or opening / closing time of the valve is determined. When the water level rises and the pressure rises more than necessary, it is determined that the water distribution pipe is clogged, and a process such as shortening the valve opening time or closing the valve can be performed. If the pressure exceeds the set pressure, an alarm can be issued.
Further, after confirming that there is a supplement, if a change in the liquid level cannot be detected even when the valve is opened, it is determined that the washing water is cut off, 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 low pressure sensor unit 10, preferably, the low pressure sensor introduction port. The difference is that a filter 20 for preventing passage of the liquid is provided before. And the filter 20
For example, a material such as Gore-Tex (registered trademark) that allows the passage of air and blocks the passage of water and other liquids can be used.

With this configuration, the trap section 5
To prevent water and other liquids from entering the sensor from entering the pressure chamber of the semiconductor pressure sensor, thereby preventing malfunction of the sensor output and failure of the signal processing circuit due to water or the like entering the pressure chamber of the semiconductor pressure sensor. It has become. Since the other configuration and operation and effect are the same as those of the first embodiment, the same reference numerals are given and the description is omitted.

FIG. 9 shows a third embodiment of the present invention. This embodiment is based on the above-described second embodiment. Then, a cleaning pipe 22 is provided by branching from the cleaning water pipe 7 downstream of the flow control valve 8, and the tip (lower end) 22 a of the cleaning pipe 22 is connected to the pipe 11.
To connect to. At this time, the connection position of the two tubes 22 and 11 is near the trap portion 5.

With this configuration, when the flow control valve 8 is opened and a predetermined amount of washing water is supplied to the toilet body 1 through the washing water pipe 7, a part of the washing water is used for washing. The cleaning 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 section 5 side, and is drained to the trap section 5 side. As a result, urine and other foreign substances that have entered the pipe 11 at the time of refilling are forcibly discharged to the trap section 5 side by the washing water, so that clogging generated between the trap section 5 and the pipe 11 is eliminated. be able to. Note that the other configurations, functions, and 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, similarly to the above-described third embodiment, clogging in a pipe is prevented. That is, the washing pipe 22 ′ branched from the washing water pipe 7 is routed and connected at a predetermined position below the pipe 11. That is, compared to the third embodiment, the connection is made slightly upstream (on the sensor side) of the pipe 11.

With this configuration, the cleaning liquid can be supplied to the lower portion 11b of the pipe 11, so that the lower portion 11b can be washed away 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, the occurrence of clogging in the pipe 11 as well as in the vicinity of the trap portion 5 is prevented. Is also to prevent. Note that the other configuration, operation, and effect are the same as those of the above-described embodiments, and thus description thereof is omitted.

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

Since the silicone 26 is in a liquid state depending on the degree of polymerization, the type of the side group, and the degree of crosslinking, when the water level rises, the tip of the pipe 11 'and the silicone 26
Since the air existing before is compressed, the silicone 26 moves upward, and the air between the silicone 26 and the micro-pressure sensor unit 10 is compressed accordingly.
A sensor in the unit can detect the pressure change. Note that the other configuration, operation, and effect are the same as those of the above-described embodiments, and thus description thereof is omitted.

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

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

Similarly, the cleaning pipe 2 is located upstream of the pipe 11 '.
The configuration as shown in FIG. 13 can be adopted by combining the fourth embodiment and the sixth embodiment which are connected to the second embodiment.

As described above, the embodiments can be appropriately combined with each other. Further, although not shown, in each of the embodiments after the third embodiment, each of the pipes 11 and
Although an example in which the filter 20 is provided on 11 'is shown, it is of course possible to omit the filter 20 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 flush water flows according to the detection result. Cleaning water can be applied according to the conditions, and mischief can be prevented, overflow can be prevented from outside, an alarm can be issued when the cleaning water is cut off or the water is left out, and water can be saved.

Further, since the pressure sensor for detecting the presence or absence of addition can be installed inside, the sensor is not exposed to the outside, so that it is possible to prevent the sensor from being directly touched and damaged, and to have a good design. Becomes

Further, with the configuration according to the second to fifth aspects, it is possible to prevent liquids and / or unnecessary gases such as ammonia from entering the inside of the sensor and the like, and to prevent clogging of the pipes.・ Can be demonstrated.

[Brief description of the drawings]

FIG. 1 is a view 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 micro pressure sensor unit.

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

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

FIG. 5 is a diagram illustrating the operation principle of the waveform discrimination circuit.

FIG. 6 is a diagram illustrating the operation principle of the waveform discriminating circuit.

FIG. 7 is a diagram illustrating the operation principle of the waveform discrimination circuit.

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

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

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

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

[Explanation of symbols]

 Reference Signs List 1 toilet body 5 trap section 7 flush water pipe 8 flow rate adjustment valve (valve) 10 micro pressure sensor unit 11, 11 'pipe (pipe line) 13 micro pressure sensor section (pressure sensor) 16 setting comparison circuit (comparison means) 17 waveform Discrimination circuit (discrimination means, means for detecting urine volume) 20 Filter 22, 22 'Cleaning tube 25 Trap 26 Silicone (blocking material)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Maeda Omron Co., Ltd.

Claims (8)

[Claims] 1. A small-sized apparatus comprising: a trap section formed on an inner bottom surface of a 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 urinal cleaning system that is installed in a toilet and controls opening and closing of a valve thereof, wherein a pressure sensor is installed above the trap unit, and a pipe line that connects the trap unit and a pressure guide unit of the pressure sensor. And the liquid in the trap portion is allowed to enter into the pipe passage, and a change in the liquid level of the trap portion is detected by the pressure sensor through the gas blocked in the pipe passage, and according to the detection result. And a control means for controlling the opening and closing of the valve. 2. 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 path, and the washing water is provided in the pipe path. 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 piping. 4. A trap which is curved in a substantially U-shape is provided in the middle of the pipe passage, and a predetermined blocking material is filled in the trap, and the blocking material blocks passage of a gas such as liquid silicone. The urinal flushing system according to any one of claims 1 to 3, wherein the flushing system can move in the piping according to the pressure. 5. The control means includes a discriminating means for discriminating whether or not urination is performed based on an output of the pressure sensor. If the discrimination result indicates urination, the valve is opened to flush the flush water with the toilet. The urinal cleaning system according to claim 1, wherein the cleaning system is supplied into the main body. 6. The urinal flush according to claim 5, wherein the control means further comprises means for detecting the amount of urine discharged, and the amount of the supplied flush water is adjusted in accordance with the urine amount. system. 7. The control means comprises: comparing means for determining whether or not the liquid level of the liquid accumulated in the trap section or the toilet body has exceeded a 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 washing water supply system based on the water level of the liquid stored in the trap section 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.