JPH10252118A - Washing system for urinal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the presence of urination by a pressure sensor, to causes operation of a washing system even when a status is low like a child, to prevent the occurrence of malfunction due to spreading of a hand like an infrared ray sensor, and to prevent the damage of a pressure sensor. SOLUTION: A washing system for an urinal comprises a trap part 5 arranged at the bottom of an urinal body 1 and temporarily storing a given amount of liquid; a washing water piping 7 to feed washing water to the urinal body 1; and a flow rate regulating valve 8 arranged in the washing water piping 7. In this case, the washing system is provided with a pressure sensor 10 to detect the change of a liquid level in the trap part 5, and a control means to regulate the opening of the flow rate regulation valve 8 according to the change of a liquid level in the trap part 5 detected by the pressure sensor 10. The pressure sensor 10 is arranged at the side of the trap part 5 and a pressure introduction pipe 13a of the pressure sensor 10 is opened directly to the trap part 5.

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 In general, in the case of a urinal, in order to wash a toilet body which receives urinals after adding a toilet, flush water (generally, ordinary water is used from an inner top surface of the toilet body). ).

[0003] To flush the flush water, the user pushes the push button of the urinal flush valve attached to the upper part of the toilet bowl, and after a certain amount of flush water flows out,
Something like stopping. However, if the pressing operation of the user is set as the starting condition, the washing cannot be performed if the user forgets to press. Further, there is a possibility that the push button may be pressed more than necessary due to mischief or the like, and there is a problem that the washing water is wasted. In addition, there is a problem that the operation itself of pushing by a person after use is complicated.

[0004] To solve such a problem, for example, an infrared sensor is installed above the urinal, and when a person stops in front of the urinal for a certain period of time or more, the person then moves to the urinal. There is one that detects that the vehicle has left the vehicle and flows a certain amount of washing water. Such a urinal cleaning system has the advantage that it is not necessary for the person to press the push button each time, and that the washing water flows automatically when the person leaves after use, so that he / she does not forget to wash.

[0005]

However, in the urinal cleaning system using the infrared sensor described above, since the sensor unit is installed at a position that can be seen from the outside, it is necessary to hold the hand or the like in front of the sensor unit. Leave it for a while,
After that, when the hand is released, the same sensor output as if the person added a small work is obtained, and there is a possibility that the washing water may flow. Further, there is a possibility that the sensor unit itself may be pushed 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 the washing water has to be flown. Furthermore, for example, if the user was standing in front of the urinal for a certain amount of time with the intention of adding a toilet, but eventually separated from the urinal without using the additional toilet, the toilet body was not dirty from the viewpoint of water saving and so on. Although it is not necessary to flush water, in the case of a urinal cleaning system using a conventional infrared sensor, flush 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 infrared 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, for example, even when the water distribution pipe is clogged, a certain amount of washing water flows, and there is a possibility that the water may overflow outside the toilet body. Furthermore, since the amount of urine used by each user cannot be detected, a constant amount of washing water is constantly being flowed, which is wasteful. There was a problem that it was not possible.

The present invention has been made in view of the above-mentioned problems, and its object is to detect the presence / absence of urination with a pressure sensor so that even if the child is short like a child, It is an object of the present invention to provide a urinal cleaning system that operates and does not malfunction by holding a hand or the like like an infrared sensor, and can prevent damage to a pressure sensor.

[0009]

To achieve the above object, a urinal cleaning system according to the first aspect of the present invention comprises:
A urinal having a trap unit provided at the bottom of the toilet body for temporarily storing a predetermined amount of liquid, a cleaning water pipe for supplying cleaning water to the toilet body, and a flow rate adjusting valve provided on the cleaning water pipe. A dexterity washing system, comprising: a pressure sensor connected to the trap section for detecting a liquid level change in the trap section; and opening the flow control valve in response to the liquid level change in the trap section detected by the pressure sensor. Control means for adjusting the degree.

[0010] With this configuration, when the replenishment is performed, the urine discharged in the trap portion is accumulated, so that the liquid level rises.
Then, the pressure sensor detects a change in the liquid level in the trap section, and detects that urine is discharged. Therefore, the control means opens the flow control valve based on the detection result, and the washing water flows. As described above, since the presence or absence of urination can be detected by the pressure sensor, it operates even when the height is short like a child, and there is no malfunction due to holding a hand or the like like an infrared sensor,
Further, the pressure sensor is provided so as to be connected to the trap portion and can be installed inside the toilet body, so that damage can be prevented.

In order to achieve the above object, a urinal cleaning system according to a second aspect of the present invention is the urinal cleaning system according to the first aspect, wherein the pressure sensor is disposed beside the trap portion. Then, the pressure introducing section of the pressure sensor was directly connected to the inside of the trap section.

With this configuration, it is possible to not only achieve the same operation as that of the first aspect of the present invention, but also to reduce the cost because no piping is required between the pressure introducing portion of the pressure sensor and the trap portion. This makes maintenance and inspection of the pressure sensor easier.

In order to achieve the above object, a urinal cleaning system according to a third aspect of the present invention is the urinal cleaning system according to the first aspect, wherein the pressure sensor is disposed below the trap section. Then, the pressure introducing section of the pressure sensor was directly connected to the inside of the trap section.

With this configuration, it is possible to not only achieve the same operation as that of the first aspect of the present invention, but also to reduce the cost because a pipe connecting the pressure introducing portion of the pressure sensor and the inside of the trap portion is not required. This makes maintenance and inspection of the pressure sensor easier.

In order to achieve the above object, a urinal cleaning system according to a fourth aspect of the present invention is the urinal cleaning system according to the first or second or third aspect. Has a determination means for determining whether or not to urinate based on the output of the pressure sensor, and when the result of the determination is urination, opens the flow rate adjustment valve to supply the flush water to the toilet body. did.

With this configuration, not only can the same effect as the above-mentioned invention of claim 1, 2, or 3 be achieved, but also whether or not urination is determined by the determination means based on the output of the pressure sensor. Is determined, and when the result of the determination is urination, the flushing valve can be opened to supply the flush water to the toilet body.

In order to achieve the above object, a urinal cleaning system according to a fifth aspect of the present invention is the urinal cleaning system according to the fourth aspect, wherein the control means controls the amount of urine discharged. Detecting means for detecting is provided, and the amount of washing water supplied to the toilet body is adjusted according to the amount of urine.

With this configuration, not only can the same operation as the above-described invention of claim 1, 2, or 3 be achieved, but also the determination means determines whether or not to urinate based on the output of the pressure sensor. If the result of the determination is urination, the flow rate regulating valve can be opened to supply the flush water to the toilet bowl main body. The amount of washing water supplied to the toilet body can be adjusted according to the amount.

In order to achieve the above object, a urinal cleaning system according to a sixth aspect of the present invention is the urinal cleaning system according to the first, second or third aspect. Has a comparing 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. And at least one of the opening times was changed.

With this configuration, not only can the same effect as the above-mentioned invention of claim 1, 2, or 3 be obtained, but also the liquid accumulated in the trap portion or the toilet body by the comparing means can be obtained. It is possible to determine whether or not the liquid level exceeds a set value, and change at least one of the opening degree and the opening time of the flow control valve.

In order to achieve the above object, a urinal cleaning system according to a seventh aspect of the present invention is the urinal cleaning system according to the first, second or third aspect. Has a detection function for detecting the presence or absence of an abnormality in the washing water supply system based on the liquid level of the liquid stored in the trap portion or the toilet body, and an alarm for outputting an alarm based on a detection result of the detection function. Means.

According to this configuration, not only can the same effect as the above-mentioned invention of claim 1, 2, or 3 be obtained, but also the detection function of the liquid collected in the trap portion or the toilet body can be achieved. The presence or absence of an abnormality in the cleaning water supply system is detected based on the position, and the warning unit can output a warning based on the detection result.

In order to achieve the above object, the urinal flushing system according to the invention of claim 8 is provided with a hole to which a pipe communicating with the inside of the trap portion is connected to the top surface of the toilet body. The sensor is provided on the top surface of the toilet body by detachably inserting the pressure introducing portion of the pressure sensor into the hole portion through a packing, and a cover is provided on the top surface portion to cover and hide the pressure sensor. It is characterized by.

With this configuration, since the presence or absence of urination can be detected by the pressure sensor, the device operates even when the user is short, such as a child, and there is no malfunction caused by holding his / her hand like an infrared sensor. Is provided on the top surface of the toilet body, and is covered and covered by the cover, so that damage can be prevented.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 to 7 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view showing 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 which is open to the front to receive urine, and a water pipe 3 is integrally formed at the center of the concave portion 2. is there. The upper end 3a of the water distribution pipe 3 is formed to protrude above the bottom surface 2B of the concave portion 2. The upper end 3a of the water distribution pipe 3 is covered with a lid 4 that opens downward. The concave portion 2, the water pipe 3 and the lid 4 constitute a trap portion 5.

When the liquid is injected into the concave portion 2, the trap portion 5 initially does not discharge the liquid from the water pipe 3, but stores the liquid (water) in the concave portion 2. When a certain amount of liquid accumulates in the recess 2, more liquid is discharged through the water pipe 3. That is, the liquid flowing into the concave portion 2 flows into the lid 4 through an opening (not shown) provided at an appropriate position of the lid 4, and the inner surface of the lid 4 and the outer peripheral surface of the water pipe 3 Enter between. When the liquid level rises and reaches above the upper end 3a of the water distribution pipe 3, the liquid existing between the water distribution pipe 3 and the lid 4 flows into the water distribution pipe 3 from the upper opening of the water distribution pipe 3 and is discharged.

A tip of a flush water pipe 7 is connected to the inner top surface of the toilet body 1, and a flow control valve 8 is disposed 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. .

Here, in the present invention, when the flow control valve 8 is open, the opening thereof can be adjusted. By adjusting the opening in this way, the flow rate of the washing water flowing per unit time is adjusted. Then, the opening is adjusted based on a control signal output from the pressure sensor (small pressure sensor unit) 10.

A connection hole 20 is formed in the peripheral wall portion 2A of the concave portion 2 of the trap portion 5, and a lower portion of the connection hole 20 is located in substantially the same plane as the bottom surface 2B of the concave portion 2.
The pressure sensor 10 is connected to the connection hole 20 via the pressure introducing pipe 13a.
Includes a semiconductor pressure sensor unit (small pressure sensor unit), and a signal processing circuit that performs predetermined signal processing on an output signal from the semiconductor pressure sensor unit. The amount of urine at the time, the presence or absence of an abnormality, and the like are determined, and the opening or the opening time of the flow control valve 8 is determined according to the determination result. It is sent to the adjustment valve 8.

That is, the pressure sensor 10 has a case 14 as shown in FIG. 2, and the case 14 is provided with the pressure introducing pipe 13a. This pressure introduction pipe 13
a communicates with the input side of the micro-pressure sensor unit 13, and the output side of the micro-pressure sensor unit 13 is connected to a high-pass filter (HP
F) 15 and connected to respective input sides of the setting comparison circuit 16. The high-pass filter (HPF) 15 extracts a characteristic amount (a signal corresponding to a pressure value) based on a small liquid level change, and sends the extracted characteristic amount to a waveform determination circuit 17 at the next stage. In the waveform determination circuit 17, given pressure information,
That is, based on the liquid level information (liquid level), it is determined whether or not a supplement is performed, and if the supplement is performed, the urine volume is calculated, and the calculation result is output to the valve control circuit 18. I have to do it.

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 rate adjusting valve 8 in order to obtain a necessary valve opening degree or opening time. That is, when the urine volume is small, the opening amount or opening time is reduced because the amount of washing water may be small. Conversely, when the urine volume is large, the opening amount or opening amount is increased to increase the washing water amount. Decide to increase the open time. The opening degree or the opening time may be determined, for example, by creating a table in which the relationship between the urine volume and the opening degree or the opening time is paired and referring to the table, or by determining the relationship between the two. May be expressed by an arithmetic expression, and the urine amount may be obtained by substituting the urine amount into the arithmetic expression.

Instead of such a flow control valve 8, a normal opening / closing valve (the opening degree cannot be adjusted) may be used. In this 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 liquid level data (pressure value) with the liquid level overflowing from the toilet body 1 and, if it is likely to overflow, sends an abnormal signal to the valve control. The signal is output to the circuit 18 and 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 liquid level is equivalent to the pressure, and the electric signal corresponding to the pressure is transmitted to the micro pressure sensor unit 13.
, And this output signal is connected to one input terminal of the comparator. Since the electric signal based on the liquid level at the time of overflowing from the toilet body 1, that is, the pressure, is known, a value lower by a certain margin than that is given as a set value to the other input terminal of the comparator. . Thus, when the sensor output has finished the set value, the output of the comparator becomes high level 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 so that "opening degree = 0 (closes the valve)" in order to prevent overflow. Emits a signal. Further, the setting comparison circuit 1
The alarm output circuit 19 which receives the abnormal signal from the horn 6 sounds a buzzer, or issues a warning signal by wire or wireless to a monitoring room in a remote place, and indicates that "the urinal is out of order due to breakdown /
There is a risk of overflow. "

Further, as the setting comparison circuit 16 described above,
By providing a plurality of comparisons in parallel with the input and making the set values given to the respective comparators different, it is possible to issue a warning stepwise according to the liquid level. By outputting a warning in stages in this way, the liquid level is abnormally rising, but if there is room before overflow, the valve opening is narrowed to reduce the amount of water per unit time. The opening degree of the valve can be variously adjusted according to the state, for example, by closing the valve when the liquid level rises.

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

As shown in FIG. 4 (A), when urine is being used, urine accumulates in the trap portion 5 as urination proceeds, so that the liquid level in the trap portion 5 rises and the pressure also rises. Therefore, the sensor output also increases. In addition, as a result of repeating the experiment, when a relatively liquid (water) is already stored in the trap portion 5, a trajectory like a solid line is taken, and no liquid is stored 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. Although there are differences in the waveforms immediately before and after urination, in both cases, the feature that the pressure (liquid level) gradually increases at the start of urination is common.

As shown in FIG. 4B, in the case of mischief or other disturbance, the liquid level of the trap portion 5 fluctuates, but the liquid level does not rise, so that the output waveform oscillates. When the disturbance subsides, the liquid level returns to the lower level (pressure). During the vibration, the value may be lower than the value at the start (reference value).

Therefore, the waveform discriminating circuit 17 discriminates between the two states of FIG. 4A and FIG. 4B, and when urination is detected as shown in FIG. The urine volume is measured. That is, from the received liquid level data (output of the high-pass filter (HPF) 15), the sampling circuit 17a acquires specific detection values at a constant sampling interval. Then, the result is given to the first setting comparison circuit 17c via the differentiation circuit 17b.

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. This integration is continued until the output (differential value) of the differentiating circuit 17b becomes equal to or less than the set value. That is,
When urination starts, the sensor output also rises as the liquid level rises as shown in FIG. 4 (A).
The rise is detected.

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 (there is a slight time lag), and the subsequent rise in the liquid level is considered to be due to urination. Therefore, by integrating data (liquid level) according to the sensor output, the urine volume at 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. 4A, so that the total urine volume with addition is obtained by integrating up to that time. The urine volume thus obtained is output to the outside via the switch S2.

The switch S1 is a normally open contact, and closes based on an 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 the integration value of the integration circuit 17d is cleared.

Then, the second setting comparison circuit 17e
For example, it can be constituted by a window comparator. That is, when the upper and lower set values (thresholds) Th1 and Th2 are appropriately selected as shown in FIG. 5, the waveform shown in FIG. Although present between the 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 becomes:
Since at least one of the set values may be exceeded, it can be determined that a disturbance has occurred, and the output of the comparator can be used as a detection signal.

The determination as to whether or not the waveform is a disturbance waveform is not limited to the above-described one. For example, it can be determined based on the magnitude of the change rate of the waveform as shown in FIG. That is, as is clear from the comparison between FIGS. 6A and 6B, the rate of change of the disturbance waveform (the inclination / differential value of the arrow in the figure) is large in any of the Japanese, increased, and decreased cases. Therefore, for example, the output of the differentiating circuit 17b is received, or the differential value is obtained by incorporating a differentiating circuit separately, and the differential value (positive or negative) is discriminated using the above-described window comparator or the like. May be determined as a disturbance waveform.

Further, as shown in FIG. 7, the waveform can be sampled to determine the waveform. Sampling circuit 1
The output from 7a is, for example, as indicated by a white circle in FIG. 7 (in the illustrated example, the sampling time was 0.5 seconds, but actually, data is acquired at finer intervals). As is clear from FIG. 7, 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. It is always larger than K. On the other hand, as shown in FIG. 7B, in the case of a disturbance, the liquid level may be lower than at the beginning of the vibration due to the fluctuation of the liquid level, and the sampling value may be lower than the reference value K. Therefore, if the sampling 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 a disturbance waveform.

With the above configuration, the pressure sensor 10
Is not visible to the user at all, so that no mischief can be made and the appearance is good and the design is excellent. Further, the liquid level change and the liquid level are measured by the waveform discrimination processing, the amount of urine of each user is calculated from the liquid level change, and the amount of washing water can be changed to save water. Also, it is possible to determine that the water distribution pipe is clogged due to an abnormal rise in the liquid level data, reduce the amount of washing water, and 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 the failure of the flow control valve 8. Conversely, when no fluctuation is recognized, no washing water is output. Clogging,
It can also be determined that 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 flow control valve 8 is determined. If the liquid level rises and the pressure also rises more than necessary, it is determined that the water distribution pipe is clogged, and processing such as shortening the opening time of the flow control valve 8 or closing the flow control valve 8 is performed. be able to. Then, after confirming that there is a supplement, if a change in the liquid level cannot be detected even when the flow control valve 8 is opened, it is determined that the washing water is out of water, and an alarm can be issued. Further, since a pipe for connecting the pressure introduction part (pressure introduction pipe 13a) of the pressure sensor 10 and the inside of the trap part 5 is not required, the cost can be reduced, and the pressure sensor 1
0 maintenance and inspection becomes easy.

(Embodiment 2) FIG. 8 shows Embodiment 2 of the present invention. In the second embodiment, the pressure sensor 10 is disposed below the trap section 5. That is, a connection hole 30 is formed in the bottom surface 2B of the concave portion 2 of the trap portion 5, and the pressure sensor 10 is connected to the connection hole 30 by the pressure introducing pipe 13a. The other configuration is the same as that of the first embodiment, and the operation is the same as that of the first embodiment. I do.

(Third Embodiment) FIGS. 9 to 11 show a third embodiment of the present invention. In the third embodiment, a hole 31 is formed on the right side of the top surface 1A of the toilet body 1, and a packing 32 is fitted in the hole 31. 31 is connected to the upper end of the pipe 11. The lower end of the pipe 11 is attached to the trap portion 5 so as to open to the peripheral wall portion 2A of the concave portion 2 of the trap portion 5. The mounting position of the pipe 11 (the liquid intake port of the trap section 5) is located below the liquid level of the liquid that is stored in the trap section 5 in normal times. Thereby, a part of the liquid in the trap portion 5 enters the pipe 11, and the liquid level in the pipe 11 rises and falls following the rise and fall of the liquid level in the trap section 5. As a result, the liquid level in the trap section 5 becomes the same as the liquid level in the pipe 11.

The pressure sensor has substantially the same configuration as the pressure sensor 10 described in the first embodiment, and the pressure introducing pipe 13a protrudes from the case 1.

Further, a tip of a flush water pipe 7 is connected to the top surface 1A of the toilet body 1, and the flush water pipe 7 is disposed on the top surface 1A at the rear. A flow control valve 8 is arranged in the middle of the washing water pipe 7.

Then, the O-ring 33 is placed on the upper surface of the packing 32, the pressure introducing pipe 13a is inserted into the hole 32A of the packing 32, and the O-ring 33 maintains the liquid tightness. A sensor 10 is connected to the pipe 11. The output side of the pressure sensor 10 is connected to an open / close control unit (not shown) of the flow control valve 8 by wiring, and based on a control signal output from the pressure sensor 10, the output of the flow control valve 8 is opened. The degree is adjusted in the same manner as in the first embodiment.

A cover 34 is detachably mounted on the top surface 1A of the toilet body 1, and the cover 34 covers and covers the pressure sensor 10 and the washing water pipe 7. Since the pressure sensor 10 is covered and covered by the cover 34 in this manner, it is possible to prevent the pressure sensor 10 from being damaged.

In the first and second embodiments, the environment of the pressure sensor 10 is in a harmful atmosphere, and is extremely poor. For this reason, as the pressure sensor 10, a portion connected and connected directly or indirectly to the trap portion 5 is protected from a harmful atmosphere by a silicon filler or the like, and an electronic circuit portion is also filled with a resin filler or the like. Therefore, it is preferable to take measures to minimize the influence of the harmful atmosphere.

[0059]

As described above, according to the urinal cleaning system according to the first aspect of the present invention, the trap unit provided at the bottom of the toilet body for temporarily storing a predetermined amount of liquid,
A urinal cleaning system having a flush water pipe for supplying flush water to the toilet body, and a flow control valve provided in the flush water pipe, wherein a liquid level in the trap section is connected to the trap section. By providing a pressure sensor for detecting a change, and control means for adjusting the opening of the flow rate adjusting valve in accordance with a change in the liquid level in the trap portion detected by the pressure sensor, The liquid level rises due to accumulation of urinated urine. Then, the pressure sensor detects a change in the liquid level in the trap section, and detects that urine is discharged. Therefore, the control means opens the flow control valve based on the detection result, and the washing water flows. As described above, since the presence or absence of urination can be detected by the pressure sensor, the device operates even when the user is short, such as a child, and does not malfunction by holding a hand or the like like an infrared sensor.
The pressure sensor is provided close to the trap portion and can be installed inside the toilet body, so that damage can be prevented.

According to the urinal cleaning system according to the second aspect of the present invention, in the urinal cleaning system according to the first aspect, the pressure sensor is disposed beside the trap portion, and By directly connecting the pressure introducing section to the inside of the trap section, not only the same effect as the effect of the first aspect of the present invention described above can be obtained, but also a pipe connecting the pressure introducing section of the pressure sensor and the inside of the trap section is not required. Therefore, the cost can be reduced, and the maintenance and inspection of the pressure sensor become easy.

According to the urinal cleaning system according to the third aspect of the present invention, in the urinal cleaning system according to the first aspect, the pressure sensor is disposed below the trap portion, and 2. The above-mentioned claim 1, wherein the pressure introducing section is directly connected to the inside of the trap section.
In addition to the effect similar to the effect of the invention of the present invention, the cost can be reduced because piping connecting the pressure introduction part of the pressure sensor and the inside of the trap part is not required, and the maintenance and inspection of the pressure sensor becomes easy. .

Further, according to the urinal cleaning system according to the fourth aspect of the present invention, the first or second or third aspect of the present invention.
In the urinal cleaning system according to the above, the control means comprises a determination means for determining whether to urinate based on the output of the pressure sensor, if the determination result is urination,
By opening the flow rate control valve and supplying the flush water to the toilet body, not only the same effects as those of the first, second, or third invention described above can be obtained, but also determination is made. The means determines whether or not urination occurs based on the output of the pressure sensor. If the result of the determination is urination, the flow rate adjustment valve can be opened to supply the flush water to the toilet body.

According to a urinal cleaning system according to a fifth aspect of the present invention, in the urinal cleaning system according to the fourth aspect, the control means includes a detecting means for detecting an amount of urine discharged, By adjusting the amount of washing water supplied to the toilet body according to the amount of urine, the same effect as the effect of the above-described claim 1 or 2 or 3 can be obtained. Or, by the determination means, whether or not urination is determined based on the output of the pressure sensor, if the determination result is urination, open the flow rate adjustment valve and supply the flush water to the toilet body. Further, the amount of urinated urine can be detected by the detecting means, and the amount of washing water supplied to the toilet body can be adjusted according to the amount of urine.

According to the urinal cleaning system according to the sixth aspect of the present invention, there is provided the urinal cleaning system according to the first or second or third aspect.
In the urinal cleaning system according to the above, the control means comprises a comparison means for determining whether or not the liquid level of the liquid accumulated in the trap portion or the toilet body has exceeded a set value, By changing at least one of the opening degree and the opening time of the flow control valve depending on whether or not it is possible to achieve the same effect as the effect of the first, second, or third aspect of the present invention. In addition, it is determined whether or not the liquid level of the liquid accumulated in the trap portion or the toilet body has exceeded a set value by comparing means, and at least one of the opening degree and the opening time of the flow control valve is changed. Can be.

According to the urinal cleaning system according to the seventh aspect of the present invention, there is provided the urinal cleaning system according to the first or second or third aspect.
In the urinal cleaning system according to the above, the control means, based on the liquid level of the liquid accumulated in the trap portion or the toilet body, a detection function for detecting the presence or absence of abnormality in the cleaning water supply system, this detection The provision of the alarm means for outputting an alarm based on the detection result of the function not only can provide the same effect as the effect of the first, second, or third aspect of the present invention, but also provides a detection function. The presence or absence of an abnormality in the washing water supply system is detected based on the liquid level of the liquid accumulated in the trap portion or the toilet body, and the alarm unit can output an alarm based on the detection result.

According to the urinal cleaning system of the eighth aspect of the present invention, a hole to which a pipe communicating with the inside of the trap portion is connected is provided on the top surface of the toilet body, and the pressure sensor is replaced with a pressure sensor. A pressure introducing unit is detachably inserted into the hole through a packing, provided on the top surface of the toilet body, and a cover is provided on the top surface to cover and hide the pressure sensor. Because it can detect the presence or absence, it operates even if you are short like a child, there is no malfunction due to holding your hand etc. like an infrared sensor, and the pressure sensor is provided on the top surface of the toilet body,
Since it is covered by the cover, damage can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of a urinal cleaning system according to the present invention.

FIG. 2 is a diagram illustrating a configuration of a pressure sensor in the urinal cleaning system.

FIG. 3 is an explanatory diagram of a configuration of a waveform discrimination circuit in the pressure sensor.

FIG. 4 (A) is a waveform diagram based on an addition which is a sensor output signal. (B) is a waveform diagram of a disturbance signal that is a sensor output signal.

FIG. 5A is a waveform chart based on an addition which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit. (B) is a waveform diagram of a disturbance signal which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit.

FIG. 6A is a waveform chart based on an addition which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit. (B) is a waveform diagram of a disturbance signal which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit.

FIG. 7A is a waveform chart based on an addition which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit. (B) is a waveform diagram of a disturbance signal which is a sensor output signal for explaining the operation principle of the waveform discrimination circuit.

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

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

FIG. 10 is an explanatory view of an exploded state of a pressure sensor mounting structure in the urinal cleaning system.

FIG. 11 is a longitudinal sectional view of a urinal cleaning system according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toilet main body 5 Trap part 7 Cleaning water piping 8 Flow control valve 10 Pressure sensor 13a Pressure introduction pipe (pressure introduction part)

Claims (8)

[Claims] 1. A trap section provided at the bottom of a toilet body for temporarily storing a predetermined amount of liquid, a washing water pipe for supplying washing water to the toilet body, and a flow rate adjustment provided on the washing water pipe. A flush sensor for a urinal having a valve, wherein the pressure sensor is connected to the trap unit to detect a liquid level change in the trap unit, and the pressure sensor detects a liquid level change in the trap unit detected by the pressure sensor. A urinal cleaning system comprising: a control unit that adjusts an opening of a flow control valve. 2. The urinal cleaning system according to claim 1, wherein the pressure sensor is arranged beside the trap portion, and a pressure introducing portion of the pressure sensor is directly connected to the inside of the trap portion. 3. The urinal flushing system according to claim 1, wherein the pressure sensor is disposed below the trap portion, and a pressure introducing portion of the pressure sensor is directly connected to the inside of the trap portion. 4. The control means includes a determination means for determining whether or not to urinate based on the output of the pressure sensor. If the result of the determination is urination, the flow rate adjusting valve is opened to discharge the washing water. 2. The system according to claim 1, wherein the toilet body is supplied.
Or the urinal cleaning system according to claim 2 or 3. 5. The apparatus according to claim 4, wherein said control means includes a detection means for detecting the amount of urine discharged, and adjusts an amount of washing water supplied to said toilet body according to the amount of urine. Urinal cleaning system. 6. The control means includes comparison means for judging 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 flow control valve is changed. 7. A detecting function for detecting the presence or absence of an abnormality in the washing water supply system based on a liquid level of the liquid stored in the trap section or the toilet body, and a detection result of the detecting function. The urinal cleaning system according to claim 1, further comprising: an alarm unit that outputs an alarm based on the alarm. 8. A top portion of the toilet body is provided with a hole to which a pipe communicating with the inside of the trap portion is connected, and a pressure sensor can be detachably attached to the pressure introducing portion of the pressure sensor through the hole. A flush system for a urinal, wherein the flush sensor is inserted and provided on the top surface of the toilet body, and a cover is provided on the top surface to cover and hide the pressure sensor.