JPH0251015B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a toilet bowl, a sensing section that detects the use of the toilet bowl and outputs a sensing signal, and an electric control that operates based on the sensing signal from the sensing section. and a water supply section that supplies cleaning water to the toilet bowl based on the output signal from the electric control section to perform first cleaning to form a water film on the inner surface of the bowl and second cleaning to discharge waste from the toilet bowl. It relates to a toilet bowl cleaning device.

<Prior art> Conventionally, as disclosed in Japanese Patent Publication No. 54-18057, this type of toilet bowl cleaning device has conventionally opened a water supply part for a predetermined period of time when a user stands in front of the toilet bowl, thereby cleaning the inner wall of the toilet bowl. Some toilets are designed so that when the user leaves the toilet after getting wet, the water supply part is opened for a longer period of time to flush away the waste water remaining in the toilet.

<Problems to be Solved by the Invention> However, in such conventional toilet bowl cleaning devices, the first flush is only performed for a predetermined period of time after sensing that the toilet is being used, so even after the first flush is completed, When defecation continues and the toilet bowl is a toilet bowl, if dirt falls onto the inner surface of the bowl outside the water-sealed area, the dirt adheres to the inner surface of the bowl, and this stuck dirt cannot be completely removed by flushing the flushing water once. When this dries, it becomes even more solidified, making it very unsightly.Furthermore, odor particles not only float and generate odor, but also scatter in the toilet as dust, which adheres to workers' clothes and is carried into the workplace. In the case of urinals, the inside of the bowl gets wet with urine, which evaporates and generates an odor, and the urine hits the inside of the bowl directly and bounces off, which can hit the user. , I strongly dislike bringing odorous components and dust into the workplace, especially when using the toilet.
There is a problem in that it is insufficient as a toilet device for IC factories, food factories, etc.

Therefore, it is conceivable to continue the first wash by keeping the water supply section open during the use of the toilet, but in this case, the longer the use time, the longer the first wash time becomes, and the first wash becomes longer. There is a problem that a large amount of washing water is consumed and it is uneconomical.

In view of the conventional situation, the present invention aims to reduce the total amount of water supplied while continuing the first cleaning during toilet use and creating a water film on the inner surface of the bowl.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to operate the water supply section while a sensing signal is being input to the electric control section, and alternately supply water to the toilet bowl and stop the water supply. This method is characterized in that the first cleaning is performed repeatedly.

<Function> According to the technical means of the present invention, the water supply for the first wash is performed intermittently during urination to form a water film on the inner surface of the bowl, thereby preventing dirt from adhering to the inner surface of the bowl and urination from occurring. This prevents rebounding, etc.

<Example> An example of the present invention will be described below based on the drawings.

First, a first embodiment shown in FIGS. 1 to 5 will be described.

The toilet bowl cleaning device includes a toilet bowl A, a water supply part B that supplies flushing water to the toilet bowl A, an exhaust part C that discharges the odor inside the toilet bowl A to the outdoors, and a sensing signal that detects the use of the toilet bowl A and outputs a detection signal. It is composed of a sensing section D that outputs an output, and an electric control section E that operates the water supply section B and exhaust section C based on the sensing signal from the sensing section D, and the sensing section D and the electric control section E are in the same case. 1 and placed above the toilet bowl A.

In the case of this embodiment, the toilet bowl A is a toilet bowl, and the toilet bowl A has a water supply chamber a2, which has a water supply port _a3 , which is connected to the water supply part B, in the rear upper part of the toilet bowl _A , and a bowl A2 in the front part. ₁
are divided into sections, and a drainage channel _A4 is formed below the water supply chamber _A2 .

On the upper edge of the bowl _A1 above, there are many water injection holes _A6 on the lower surface.
The rim passageway _a5 , which has been opened at appropriate intervals, is used as the bowl.
a ₁ Formed in a ring shape so as to protrude inward.

The rim water passage _a5 communicates with the water supply chamber _a2 at the rear end, and also communicates with the water supply channel _a7 formed on the back surface of the bowl _a1 at the middle part, and the lower end of the water channel _a7 communicates with the water supply chamber _a2. A jet hole _A8 penetrating the bottom wall is opened toward the entrance _A9 of the drainage channel _A4 .

Drainage channel _A4 extends diagonally upward along the back side wall of Bowl _A1 from an entrance _A9 opened at the bottom of Bowl _A1 ,
A U-turn is made from a position where a certain water level is formed in the bowl _a1 , that is, a water seal part _a10 , and the toilet bowl A1 is connected to an outlet _a11 provided at the rear surface of the toilet bowl A.

In addition, there is an odor intake port A ₁₂ on the peripheral wall of the bowl A ₁ .
The odor intake port A ₁₂ is connected to the rear surface of the toilet bowl A via an exhaust passage A ₁₃ formed on the left and right sides of the water supply chamber A ₂ , and is connected to the outside through an exhaust pipe A ₁₄ connected to this part. An exhaust section C is provided in the middle of this exhaust pipe _a14 .

The water supply section B has a water supply pipe _b3 connected to a water supply source (not shown) branched downstream into two parts, one of which is a flow path _b4.
A solenoid valve b ₁ that supplies cleaning water with a small instantaneous flow rate through a water stop valve b ₅ is installed in the other flow path b ₆ , and an electromagnetic flush valve b ₂ with a high instantaneous flow rate is installed in the other flow path b 6. The downstream ends of b ₄ and b ₆ are connected to the water discharge pipe b ₈ which is connected to the water supply port a ₃ of the water supply chamber a ₂ via a vacuum breaker b ₇ which also serves as a backflow prevention valve. The solenoid valve _b1 and the solenoid flush valve _b2 are electrically connected to the electric control section E.

Normally, both the solenoid valve _b1 and the solenoid flush valve _b2 are closed, and when the solenoid valve _b1 is opened, flushing water with a small instantaneous flow enters the water supply chamber _a2 of the toilet bowl A. A first cleaning process is performed in which water is supplied to the rim passageway A5 through the rim passageway _A5 , and water is sprayed onto the inner surface of the bowl _A1 from a large number of water injection holes _A6 drilled in the lower surface thereof to form a water film.

At this time, if the waste is in bowl A ₁ other than water sealing part A ₁₀ ,
Even if it falls on the inner surface, it will be washed away without sticking.

In addition, at this time, since the instantaneous flow rate of the cleaning water supplied from the solenoid valve b ₁ to the rim water passage a ₅ is small, most of it is discharged from the water injection holes a _{6 .} It rarely flows to a ₈ .

Next, when electromagnetic flash valve _b2 opens,
Washing water with a large instantaneous flow rate is supplied to the rim passageway _A5 , and is discharged onto the inner surface of the bowl _A1 from a large number of water injection holes _A6 ..., and jet water is jetted from the jet hole _A8 via the headrace conduit _A7 . A second flushing process is performed in which a siphon phenomenon is caused in the bent drainage channel _A4 to completely drain the waste water and dirt in the bowl _A1 to the outside of the toilet bowl A.

The exhaust section C is an intake fan C, which is electrically connected to the electric control section E. When the intake fan C is operated, the odor intake port opened in the peripheral wall of the bowl _A1 is activated.
a ₁₂ to exhaust the odor inside toilet bowl A outside.

The sensing section D consists of a device that combines a light emitting circuit, a light receiving circuit, a detection amplifier circuit, a level discrimination circuit, a sensor output circuit, etc., and is electrically connected to a power source (not shown) and an electric control section E, respectively, to emit light. Invisible infrared light emitted from the circuit via a light projecting lamp is diffusely reflected by a human body, etc., and the light receiving circuit receives the reflected light via the light receiving lamp, thereby outputting a sensing signal to the detection amplifier circuit.

This amplified output is used in a level discrimination circuit to discriminate whether the electrical signal exceeds a certain level.
When a certain level is exceeded, a sensor output is generated from the sensor output circuit.

Next, when the light-receiving lamp stops receiving light, the output of the light-receiving circuit disappears.

In addition to the above, the sensing section D may optionally include a proximity switch on the toilet door or the like, and another sensor that sends a sensing signal to the electric control section E when the door is opened.

The electric control section E is connected to the sensor output circuit of the sensing section D, a sensor input OR circuit electrically connected to the other sensors, a fan output circuit that operates the intake fan C, and an unstable multivibrator circuit. A pushbutton input is activated by a self-resetting type pushbutton switch 2 installed above the toilet bowl A via a solenoid valve output circuit that operates the solenoid valve _b1 , a delay circuit, a differentiation circuit, a one-shot circuit 2, and an OR circuit. It consists of a device that combines a one-shot circuit 1, a solenoid output circuit for operating the electromagnetic flush valve _b2 , etc.

When this electric control section E receives a sensing signal from the above-mentioned sensing section D connected to the sensor input OR circuit or at least one of the other sensors, an OR circuit output is generated and the fan output is immediately generated. When the circuit is activated and the intake fan begins to move, the unstable multivibrator circuit is activated and the solenoid valve output circuit is periodically turned ON for ₂ hours.
The solenoid of the solenoid valve b ₁ for the first cleaning is turned off for T ₃ hours, the solenoid of the solenoid valve b 1 for the first cleaning is energized for T ₂ hours, and then the energization is stopped for T ₃ hours, and the solenoid valve b ₁ is alternately opened and closed to perform the first cleaning. is carried out intermittently.

Furthermore, when the OR circuit output is connected for more than the delay time (T ₁ hour), the delay circuit generates a delay circuit output, and this delay circuit output is differentiated by the differentiator. The one-shot circuit 2 is activated by the negative pulse generated by this differentiating circuit and generates a one-shot signal with a time width of _T5 . That is, this occurs when the output of the light receiving circuit of the sensing section D disappears and the output of the delay circuit disappears.

On the other hand, when the push button input circuit is activated by operating the push button switch 2, the one shot circuit is activated to generate a one shot signal having a width of _T4 .

The one-shot signal with a _T4 or _T5 time width goes through an OR circuit, the solenoid output circuit operates for _T4 hours or _T5 hours, and is sent to the solenoid of the second cleaning electromagnetic flush valve _b2 for T4 hours or _T5 hours.
T The second cleaning is performed by energizing for ₅ hours and opening the valve.

Next, when the output of the light receiving circuit of the sensing part D disappears, the operation of the fan circuit is stopped and the suction fan C is stopped, and the operation of the unstable multivibrator circuit is also stopped and the first cleaning electromagnetic Stop valve _b1 .

Thus, in such a toilet bowl cleaning device, when a person stands in front of the toilet bowl A for a certain period of time _T1 , the sensing part D detects that the toilet bowl A is being used and outputs a sensing signal,
The electric control unit E inputs this sensing signal and operates the intake fan c, which is the exhaust unit C, to discharge the toilet bowl A.
First cleaning is performed in which odor is discharged outside and a water film is formed on the inner surface of the bowl _a1 of the toilet bowl A by alternately opening and closing the solenoid valve _b1 .

On the other hand, when the use of the toilet bowl A is finished, the sensing signal output from the sensing part D disappears, and the electric control part E opens the electromagnetic flush valve _b2 for a certain period of time _T5 to clean the bowl _a1 of the toilet bowl A. At the same time, the operation of the exhaust section C is stopped.

In addition, if push button switch 2 is operated while toilet A is in use or after use, electromagnetic flush valve b ₂ will be activated for a certain period of time regardless of the above operation.
T ₄ The valve is opened and the second cleaning is performed.

Such a time chart is shown in FIG.

In this embodiment, while the toilet is in use, instead of continuing the first flush, the first flush is performed intermittently to form a water film on the bowl surface, so the amount of water required for the first flush is small. You can save water.

Next, a second embodiment shown in FIGS. 6 to 10 will be described.

In this device, the toilet bowl A is composed of a urinal, and the water supply part B is composed of an electromagnetic flush valve _b9 , and the electromagnetic flush valve _b9 is installed in a case installed above the urinal A. 1, sensing part D
It is housed together with the electrical control section E.

Urinal A has a bowl _A1 with a water seal _A10 at the bottom by extending the peripheral edge of the rear wall _A15 , and side walls _A16 on the left and right.
are formed respectively, and a water supply chamber _a2 is also formed in the same body on the upper part of the wall part _a15 .

The water supply chamber _A2 has a water supply port _A3 opened in its upper surface, and a water discharge pipe B8 connected to the electromagnetic flush valve _B9 is connected to the water supply port, and a water sprinkling chamber is connected to the bottom through a partition wall _A17 . A ₁₈ is divided into sections, and both are connected through a connecting hole a _19.
A suitable number of water sprinkling holes A ₂₀ are drilled on the rear wall A ₁₅ side of the lower surface of this water sprinkling chamber A ₁₈ , and the water flowing into the water supply chamber A ₂ from these water sprinkling holes A ₂₀ ... from the water supply port A ₃ is used for cleaning. back wall of water
Wash the rear inner surface of bowl _A1 by spraying water along the inner surface of _A15 .

The side wall portion _a16 defines therein a communication waterway _a21 that communicates with the rim waterway _a5 defined at the upper edge of the bowl _a1 except for the front end, and an exhaust passageway _a13 in the vertical direction.

The upper end of the connecting channel _a21 communicates with the water supply chamber _a2 , and a portion of the washing water flowing into the water supply chamber _a2 is directed through an appropriate number of water injection holes _a6 ... drilled in the lower surface of the rim channel _a5 . Wash the front inner surface of bowl _A1 by spouting water along the inner surface of bowl _A1 .

The exhaust passage A ₁₃ has an exhaust pipe A ₁₄ connected to the outdoors connected to its upper end, and _an odor intake port A ₁₂ that opens downward near the bowl A ₁ at its lower end. An intake fan c constituting section C is provided.

In addition, the electric control section E is a sensor input OR circuit,
A fan drive circuit that operates the intake fan c via an OR circuit and an off-delay timer, and a solenoid that operates the electromagnetic flush valve _b9 via a delay circuit, a memory circuit, an unstable multivibrator circuit, and a memory reset circuit. It is composed of a drive circuit.

When this electric control section E inputs a sensing signal to the sensor input OR circuit, an OR circuit output is generated, and the fan drive circuit is activated through the OR circuit and the OFF delay timer circuit, and the intake fan C starts to move.

Also, if the OR circuit output continues for longer than the delay circuit (T ₁ hour), the delay circuit generates the delay circuit output,
The memory circuit is placed in a memory state and continues to generate memory output.

While the memory circuit is in the memory state, the non-stable multivibrator circuit is activated and the solenoid drive circuit is periodically turned ON for T ₂ hours and OFF for T ₃ hours.
The electromagnetic flash valve b ₉ is activated, and the electromagnetic flash valve b 9 is energized for T ₂ hours, then the energization is stopped for T ₃ hours, and the electromagnetic flash valve b ₉ is opened.

Therefore, the electromagnetic flush valve _b9 opens,
The time Tl during which water flows along the inner surface of the bowl _a1 of the urinal A is longer than the opening time _T2 of the electromagnetic flush valve _b9 , so the electromagnetic flush valve is adjusted so that _T3 < Tl - _T2 . Opening time T ₃ and opening time of Tsushi valve b ₉
If T ₂ is determined, water will always be flowing inside the bowl A ₁ while the urinal A is in use.

In addition, the memory reset circuit is activated during T ₂ hours by the astable multivibrator circuit.
T A memory reset output with a width of ₂ hours is generated.

The above memory circuit maintains the memory state even if it receives a memory reset output while receiving the delay circuit output, but if it receives a memory reset output after the delay circuit output has disappeared, the memory reset output disappears. At the same time, the memory state is released and the operation of the unstable multivibrator circuit is also stopped.

Therefore, if the electromagnetic flash valve b ₉ is energized at the time when the person leaves and the delay circuit output disappears, the memory state is canceled at the same time as the energization is cut off, and the subsequent energization to the electromagnetic flash valve b ₉ is stopped. However, if the power to the electromagnetic flash valve b ₉ is stopped at the time of disappearance, the electromagnetic flash valve b ₉ is energized again after the disappearance, and the memory state is released after this energization is cut off.

Furthermore, the memory output of the memory circuit operates the fan drive circuit through the OR circuit and the off-delay timer circuit, so when the person leaves and the output of the sensor input OR circuit disappears, and the memory output disappears, the off-delay timer circuit operates. is activated, and after a predetermined period of time, the operation of the intake fan c is stopped.

Such a time chart is shown in FIG.

In such a toilet flushing device, when a person stands in front of the urinal A, the infrared rays emitted from the projecting lamp are first diffused and projected by clothing, etc., and enter the receiving lamp, and this state continues for a certain period of time or longer. , when the door of the urinal opens, the sensing part D outputs a sensing signal, and the intake fan c, which is the exhaust part C, starts to move and exhausts the odor inside the urinal A to the outside, and the water supply part B operates and closes the urinal. Toilet bowl A
Alternately supplying water to and stopping the water supply to the bowl.
_a1 A first cleaning process in which a water film is formed on the inner surface of the urinal A, and a second cleaning process in which sewage and filth are discharged from the urinal A are performed.

When the person leaves, the water supply section B stops operating and the intake fan C stops operating after a certain period of time.

In addition, since the exhaust part C of the present invention is designed to exhaust the odor in the toilet bowl A, odor particles will not be suspended in the toilet, and a particularly high level of cleanliness is required.
It is effective as a clean room in an IC factory or as a toilet device in a food factory.

<Effects of the Invention> Since the present invention has the above configuration, it has the following advantages.

By forming a water film on the inner surface of the bowl where water is intermittently supplied for the first wash while using the toilet,
Since the adhesion of dirt and the splashing of urine on the inner surface of the bowl are prevented, the total amount of water supplied can be reduced while continuing the first cleaning while using the toilet to form a water film on the inner surface of the bowl.

Therefore, compared to conventional systems in which the first flush is performed only for a predetermined period of time after the first flush starts to sense that the toilet bowl is being used, this method prevents dirt from adhering to the inner surface of the bowl and creating an odor after the first flush is completed, or urine leaking. As a result, it is effective as a toilet device in IC factories, food factories, etc. where particularly cleanliness is required, and it is the first
Compared to washing continuously during the use of toilets,
The amount of washing water required for the first washing is reduced, which saves water and is economical.

[Brief explanation of drawings]

FIG. 1 is a side view of a toilet bowl cleaning device showing a first embodiment of the present invention, showing the toilet bowl in longitudinal section, FIG. 2 is a plan view of the same with a part cut away, and FIG. 3 is a front view of the same. Fig. 4 is a block diagram, Fig. 5 is a time chart, Fig. 6 is a side view of the toilet bowl cleaning device showing the second embodiment, showing a longitudinal section of the toilet bowl, and Fig. 7 is the same. FIG. 8 is a front view with a portion cut away, FIG. 9 is a block diagram, and FIG. 10 is a time chart. A...Toilet bowl, a ₁ ...Bowl, B...Water supply part, D
...Sensing section, E...Electric control section.

Claims (1)

[Claims] 1. A toilet bowl, a sensing section that detects the use of the toilet bowl and outputs a sensing signal, an electric control section that operates based on the sensing signal from the sensing section, and a toilet that flushes based on the output signal from the electric control section. In the toilet bowl cleaning device, the water supply unit is equipped with a water supply unit that supplies water to form a water film on the inner surface of the bowl, and a second flush that discharges waste from the toilet bowl. A toilet bowl cleaning device characterized in that a first flushing is performed by activating a part of the toilet bowl and alternately repeating water supply and stopping of water supply to the toilet bowl.