JP6865923B2 - Flush toilet - Google Patents

Description

The present invention relates to a flush toilet that cleans the toilet bowl with wash water supplied from a wash water source and discharges filth.

A sewage transport system is known that counts the number of times a flush toilet is used or the interval between times of use, and supplies water for transport to the flush toilet separately from the flush toilet when a predetermined count value is reached (for example). , Patent Document 1).

Japanese Patent No. 40947797

In the above-mentioned filth transport system, for example, it is conceivable that the washing water stagnant in the horizontal pipe will disappear together with the filth as time elapses in a state where the filth is stagnant in the horizontal pipe. When the washing water that has stagnated in the horizontal pipe along with the filth disappears, then when new filth flows into the horizontal pipe, the filth that has newly flowed into the stagnant filth rides on the horizontal pipe. There was a concern that it would be blocked.

The present invention has been made to solve the above-mentioned problems, and is a flush toilet that can prevent the filth that has newly flowed into the filth that has stagnated in the horizontal pipe from running on. The purpose is to provide.

The present invention is a water-washing stool that cleans the toilet bowl with the washing water supplied from the washing water source and discharges filth to the horizontal pulling pipe, and has a bowl portion having a bowl-shaped filth receiving surface and a lower portion of the bowl portion. A drainage channel that is connected to and discharges filth, a water discharge unit that discharges wash water to the bowl portion, a control unit that controls water discharge from the water discharge unit based on a cleaning operation by the user, and stores the wash water. A tank unit, a water supply valve that discharges or stops the cleaning water supplied from the cleaning water source to the tank unit, a control unit that controls the water supply valve, and drainage or stopping of the cleaning water from the tank unit to the water discharge unit. The control unit includes a drain valve for watering and an overflow means for draining wash water to the bowl portion without opening and closing the drain valve when the water level in the tank portion rises above the water stop water level. A water-washing stool that supplies wash water into the tank portion by the water supply valve and discharges the wash water to the bowl portion by the overflow means when a predetermined time elapses later.

In the present invention configured as described above, when a predetermined time elapses after cleaning the toilet bowl, the control unit supplies the cleaning water into the tank unit by the water supply valve, and discharges the cleaning water to the bowl unit by the overflow means. Therefore, even if the flush toilet is used at intervals and the time elapses in a state where the filth is stagnant in the horizontal pipe, the amount of washing water that is stagnant in the horizontal pipe together with the filth is reduced. By the overflow means, the washing water is supplied into the horizontal pulling pipe via the bowl portion, and the washing water stagnant in the horizontal pulling pipe can be replenished. Therefore, it is possible to prevent the filth that has newly flowed into the stagnant filth from riding on and blocking the inside of the horizontal pipe.

Further, the present invention is a flush toilet that cleans the toilet bowl with wash water supplied from a wash water source and discharges filth, and is connected to a bowl portion having a bowl-shaped filth receiving surface and below the bowl portion. The control is provided with a drainage channel for discharging filth, a water discharge unit for discharging wash water to the bowl portion, a nozzle for cleaning a local part of the user, and a sanitary cleaning device having a control unit for controlling the nozzle. The unit is a flush toilet that discharges cleaning water to the bowl portion by the nozzle when a predetermined time elapses after cleaning the toilet bowl.

In the present invention configured as described above, the control unit discharges cleaning water to the bowl portion by the nozzle of the sanitary cleaning device when a predetermined time elapses after cleaning the toilet bowl. Therefore, even if the flush toilet is used at intervals and the time elapses in a state where the filth is stagnant in the horizontal pipe, the amount of washing water that is stagnant in the horizontal pipe together with the filth is reduced. , The washing water is supplied into the horizontal pulling pipe through the bowl portion, and the washing water stagnant in the horizontal pulling pipe can be replenished. Therefore, it is possible to prevent the filth that has newly flowed into the stagnant filth from riding on and blocking the inside of the horizontal pipe.

According to the flush toilet of the present invention, it is possible to prevent the filth that has newly flowed into the filth that has stagnated in the horizontal pipe from running on.

A partial side sectional view showing a flush toilet according to the first embodiment of the present invention. The block diagram which shows the control structure of the flush toilet in the 1st Embodiment of this invention. The flowchart which shows the operation of the flush toilet in the 1st Embodiment of this invention. A partial side sectional view showing a flush toilet according to a modified example of the first embodiment of the present invention.

Hereinafter, a flush toilet according to the first embodiment of the present invention will be described with reference to the drawings.
First, the configuration of a flush toilet according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a partial side sectional view showing a flush toilet according to the first embodiment of the present invention.
As shown in FIG. 1, the flush urinal 1 according to the embodiment of the present invention is a so-called siphon type flush urinal that flushes filth by a siphon action, and the flush urinal 1 is on the floor surface F. A pottery body 2 (toilet bowl) to be placed is provided, and a bowl portion 4 is formed on the front side of the upper part of the toilet bowl body 2, and communicates with the bowl portion 4 below the center rear side of the toilet bowl body 2. Drain trap pipelines 8 (drainage channels) are formed.

The flush toilet 1 in the present embodiment includes a water storage tank 10 (tank unit) for storing wash water supplied from the wash water source S via a water supply valve 5 which is a solenoid valve. A drain valve 15 which is an electromagnetic valve is provided in the water storage tank 10, and the drain valve 15 is opened by the operation of the operation lever 11 of the user so that the washing water is supplied to the water discharge portion 20 of the toilet bowl main body 2. ing.
Further, the water storage tank 10 has an overflow means 7 for draining wash water to the bowl portion 4 without opening and closing the drain valve 15 when the water level inside the water storage tank 10 rises above the water stop water level.
In the present embodiment, the washing water is supplied to the water discharge unit 20 by operating the operation lever 11, but the present invention is not limited to such a mode, and for example, an operation on the switch of the remote controller is used. Alternatively, the cleaning water may be supplied to the water discharge portion by another user's cleaning operation such as detection of the user by the human body detection sensor.

Further, the flush toilet 1 includes a control unit 6 that controls water discharge from the water discharge unit 20 based on a washing operation by the user. Details of the control unit 6 will be described later.

The bowl portion 4 includes a filth receiving surface 14 formed in a bowl shape, and a rim portion 16 formed on the upper outer side of the entire circumference of the bowl portion 4 to form an upper edge of the toilet bowl. Further, a water reservoir portion 18 is formed below the bowl portion 4. Washing water is stored up to a predetermined amount in the water collecting portion 18 after each washing to form a water collecting surface W. The inlet 8a of the drain trap pipeline 8 described above opens below the water reservoir 18, and the lower end of the descending passage 8b of the drain trap pipeline 8 is connected to the horizontal pipe 12 under the floor via the drain socket 9. Has been done.

The washing water supplied from the water storage tank 10 passes through the drain valve 15 and is discharged from the water discharge port 20 on the surface between the rim portion 16 and the filth receiving surface 14 and on the inner peripheral wall surface of the rim portion 16 in the forward direction of the toilet bowl. A swirling flow is formed so that the swirling flow flows down from the inner peripheral wall surface of the rim portion 16 on the waste receiving surface 14 while swirling in the direction of the water collecting portion 18.

Next, the functional configuration of the control unit of the flush toilet according to the first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing a controlled configuration of a flush toilet according to the first embodiment of the present invention.
The control unit 6 has a time measuring means 62 for measuring the time and a memory 64 (storage means), and outputs a signal output from a water level sensor (not shown) provided in the operation lever 11 or the water storage tank 10. It receives and performs predetermined information processing, and outputs a control signal corresponding to the control to be executed as a result of the information processing to the water supply valve 11 and the drain valve 15. As a result, the control unit 6 functions as a cleaning operation detecting means, a time comparing means, a cleaning process executing means, and a washing water amount determining means. The control unit 6 configured in this way can perform various controls according to the characteristics of the usage status of the flush toilet 1 and the characteristics of the user.

The control unit 6 includes a cleaning operation detecting means for detecting the operation of the operation lever 11 by the user, and a time comparing means for comparing the time when the cleaning operation detecting means detects the operation on the operation lever 11 with a predetermined time zone. , Interval comparison comparing the elapsed time from the time when the previous operation to the operation lever 11 stored in the memory 64 was detected and the predetermined interval based on the time when the cleaning operation detecting means detected the operation to the operation lever 11. Means and.
Further, the control unit 6 discharges wash water from the water discharge unit 20, cleans the filth receiving surface 14, and follows the first cleaning for flowing the filth toward the drain trap pipeline 8 and the first cleaning. The cleaning process implementation means for carrying out the second cleaning in which the cleaning water flows toward the drain trap pipeline 8 following the filth.
Further, the control unit 6 increases the amount of cleaning water for the second cleaning when the time when the cleaning operation detecting means detects the operation of the operation lever 11 is within a predetermined time zone based on the comparison result of the time comparing means. Based on the comparison result of the time zone washing water amount determining means and the interval comparing means, when the elapsed time from the time when the previous operation to the operation lever 11 is detected exceeds the predetermined interval, the washing water amount of the first washing is determined. It has an elapsed time for increasing the amount of washing water and a means for determining the amount of washing water.

Next, the operation of the flush toilet according to the first embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the flush toilet according to the first embodiment of the present invention.
As shown in FIG. 3, when the user operates the operation lever 11, the toilet bowl cleaning operation is performed (step S302). When the toilet bowl cleaning operation is performed, the control unit 6 stores this time in the memory 64 as the time A (step S304).

Next, the control unit 6 drives the drain valve 15 to discharge the cleaning water from the water discharge unit 20 to carry out the toilet bowl cleaning a, which is a normal cleaning, by the cleaning process executing means (step S306). At this time, the amount of cleaning water for the first cleaning for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14 and flowing the filth toward the drain trap pipeline 8 is 2.4 L (liter). The amount of wash water for the second wash, which follows the first wash and then flows the wash water toward the drain trap pipeline 8, is also 2.4 L.

Next, the control unit 6 determines whether or not a predetermined time E has elapsed from the time A stored in the memory 64 (step S308). When the predetermined time E has elapsed from the time A (step S308: YES), the water supply valve 5 is opened with the drain valve 15 closed, and the washing water is supplied into the water storage tank 10. As a result, the water level in the water storage tank 10 rises above the water stop water level, and the overflow means 7 supplies the washing water to the bowl portion 4 without opening and closing the drain valve 15. As a result, the washing water is supplied to the water reservoir 18, and the washing water is supplied from the drain trap pipeline 8 to the horizontal pipe 12.
As a result, it is possible to replenish the washing water on the upstream side of the filth that has stagnated in the horizontal pulling pipe 12.
In the present embodiment, the washing water is supplied to the bowl portion 4 by the overflow means 7, but the present invention is not limited to such a form, and may be supplied by other means. For example, as shown in FIG. 4, a sanitary cleaning device 200 having a nozzle 210 controlled by the control unit 220 to clean the local part of the user is provided in the toilet bowl main body 2, and instead of the overflow means 7, the nozzle 210 to the bowl portion are provided. Washing water may be discharged to 4. At this time, the control unit 220 has the same function as the control unit 6 in the first embodiment, and further controls the advance / retreat of the nozzle 210 and the discharge / stop of the washing water from the nozzle 210. Further, the washing water may be discharged from both the overflow means 7 and the nozzle 210 to the bowl portion 4. Here, FIG. 4 is a partial side sectional view showing a flush toilet according to a modified example of the first embodiment of the present invention.

Further, when the predetermined time E has not elapsed from the time A (step S308: NO), the user operates the operation lever 11 to perform the toilet bowl cleaning operation (step S312). The unit 6 stores this time as the time B in the memory 64 (step S313).

Next, the control unit 6 determines whether or not the time B is within the predetermined time zone C by the time comparison means (step S314). This predetermined time zone C is in the morning, for example, from 8:00 am to 12:00 pm. When the time B is within the predetermined time zone C (step S314: YES), the control unit 6 performs the toilet bowl cleaning b by the cleaning process executing means (step S316). At this time, the control unit 6 increases the amount of cleaning water for the second cleaning as compared with the normal cleaning by the time zone cleaning water amount determining means. As a result, the amount of cleaning water for the first cleaning for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14 and flowing the filth toward the drain trap pipeline 8 by the siphon action is 2.4 L. Following the first cleaning, the amount of cleaning water for the second cleaning is 3.6 L, in which the cleaning water is flowed toward the drain trap pipeline 8 following the filth.
As a result, it is possible to make it easier to convey the filth in the horizontal pulling pipe 12.
In the present invention, the predetermined time zone C may be changed by the control unit 6 depending on the usage status such as the frequency of use of the flush toilet 1.

Next, when the time B is not within the predetermined time zone C (step S314: NO), the control unit 6 determines whether or not the time B is within the predetermined time zone D by the time comparison means (step S318). .. This predetermined time zone D is nighttime, for example, from 11:00 pm to 1:00 am. When the time B is within the predetermined time zone D (step S318: YES), the control unit 6 performs the toilet bowl cleaning c by the cleaning process executing means (step S320). At this time, the control unit 6 increases the amount of washing water for the first washing and the second washing as compared with the normal washing. As a result, the amount of cleaning water for the first cleaning for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14 and flowing the filth toward the drain trap pipeline 8 is 4.8 L, and the first cleaning The amount of wash water for the second wash, in which the wash water flows toward the drain trap pipeline 8 following the filth, is also 4.8 L.
As a result, it is possible to prevent the filth from staying in the lateral branch pipe 12.
In the present invention, the predetermined time zone D may be changed by the control unit 6 depending on the usage status such as the frequency of use of the flush toilet 1.

When the time B is not within the predetermined time zone D (step S318: NO), the control unit 6 uses the interval comparison means to cause the elapsed time X, which is the elapsed time from the time A to the time B, to exceed the first predetermined interval E. Whether or not it is determined (step S322). The first predetermined interval E is a time interval in which the washing water on the upstream side of the filth stagnant in the horizontal pulling pipe 12 does not disappear, for example, one hour.

Next, when the elapsed time X exceeds the first predetermined interval E (step S322: YES), the control unit 6 determines whether or not the elapsed time X exceeds the second predetermined interval F (step). S323). The second predetermined interval F is a time during which the stagnant filth in the horizontal pulling pipe 12 comes into close contact with the inner wall of the horizontal pulling pipe 12, for example, 6 hours.

When the elapsed time X exceeds the second predetermined interval F (step S323: YES), the control unit 6 performs the toilet bowl cleaning c by the cleaning process executing means (step S324). At this time, the control unit 6 increases the amount of washing water for the first washing and the second washing. As a result, the amount of cleaning water for the first cleaning for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14 and flowing the filth toward the drain trap pipeline 8 is 4.8 L, and the first cleaning The amount of wash water for the second wash, in which the wash water flows toward the drain trap pipeline 8 following the filth, is also 4.8 L.

As a result, it is possible to prevent the filth from staying in the lateral branch pipe 12.
When the elapsed time X does not exceed the second predetermined interval F (step S323: NO), the control unit 6 performs the toilet bowl cleaning d by the cleaning process executing means (step S326). At this time, the control unit 6 increases the amount of washing water for the first washing as compared with the normal washing by the means for determining the amount of washing water for the elapsed time. As a result, the amount of cleaning water for the first cleaning for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14 and flowing the filth toward the drain trap pipeline 8 is 3.6 L, and the first cleaning The amount of wash water for the second wash, in which the wash water flows toward the drain trap pipeline 8 following the filth, is 2.4 L.
As a result, it is possible to prevent the filth discharged this time from riding on the filth that has stagnated in the horizontal pulling pipe 12 and blocking the horizontal pulling pipe 12.

Next, when the elapsed time X does not exceed the first predetermined interval E (step S322: NO), the control unit 6 performs the toilet bowl cleaning a by the cleaning process executing means (step S328). At this time, the amount of cleaning water for the first cleaning is 2.4 L for discharging the cleaning water from the water discharge unit 20, cleaning the filth receiving surface 14, and flowing the filth toward the drain trap pipeline 8, and the first cleaning. The amount of wash water for the second wash, in which the wash water flows toward the drain trap pipeline 8 following the filth, is also 2.4 L.

According to the flush toilet 1 according to the first embodiment of the present invention described above, the control unit 6 supplies wash water into the water storage tank 10 by the water supply valve 5 when a predetermined time elapses after cleaning the toilet, and the overflow means. Washing water is discharged to the bowl portion 4 by 7. Therefore, the usage time interval of the flush toilet 1 is widened, the time elapses in a state where the filth is stagnant in the horizontal pipe 12, and the amount of the washing water that is stagnant in the horizontal pipe 12 together with the filth is reduced. Even if the overflow means 7, the washing water is supplied into the horizontal pulling pipe 12 via the bowl portion 4, and the washing water stagnant in the horizontal pulling pipe 12 can be replenished. Therefore, it is possible to prevent the filth that has newly flowed into the stagnant filth from riding on and blocking the inside of the horizontal pulling pipe 12. In addition, a flush toilet that normally supplies wash water from the tank portion to the bowl portion is provided with an overflow means, and is used to discharge the wash water to the bowl portion when a predetermined time has passed after cleaning the toilet bowl. Separately, it is not necessary to separately discharge the washing water into the bowl portion, and the washing water can be easily discharged into the bowl portion when a predetermined time has elapsed after cleaning the toilet bowl. Further, for example, as compared with the case where the washing water is supplied to the bowl part through the drain valve of the tank part when a predetermined time elapses after washing the toilet bowl, a relatively small amount of washing water is discharged to the bowl part, so that the operation is performed. It is difficult to give the user a sense of discomfort that the washing water is discharged to the bowl part when the lever is not operated.

The same applies to the above-described modification of the first embodiment of the present invention shown in FIG. 4, in which the flush toilet 100 is used for a long time with the filth stagnant in the horizontal pipe 12. Even if the amount of washing water that has stagnated in the horizontal pulling pipe 12 decreases with the filth, the cleaning water is supplied into the horizontal pulling pipe 12 through the bowl portion 4 by the nozzle 210, and the horizontal pulling pipe is used. The wash water stagnant in 12 can be replenished. Therefore, it is possible to prevent the filth that has newly flowed into the stagnant filth from riding on and blocking the inside of the horizontal pulling pipe 12.

In the flush toilet 1 according to the first embodiment of the present invention described above, the drain valve 15 which is an electromagnetic valve is provided in the water storage tank 10, but the present invention is limited to such a form. It's not a thing. For example, the chain member connected to the operation lever may be operated by the operation of the operation lever of the user, and a drain valve that opens and closes by the chain member may be provided. Therefore, in the present invention, regardless of whether or not the drain valve is controlled by the control unit, the cleaning water can be discharged to the bowl portion when a predetermined time has elapsed after cleaning the toilet bowl via the overflow means. Further, in a flush toilet equipped with a sanitary cleaning device, in order to discharge the cleaning water to the bowl portion when a predetermined time has passed after cleaning the toilet bowl, a separate means for discharging the cleaning water to the bowl portion is not required, which is easy. When a predetermined time has passed after cleaning the toilet bowl, the cleaning water can be discharged to the bowl portion.

Further, in the flush toilet 1 according to the first embodiment of the present invention described above, the drain valve 15 which is an electromagnetic valve is provided in the water storage tank 10, and the drain valve 15 is operated by the operation of the operation lever 11 of the user. Is opened to supply wash water to the water discharge portion 20 of the toilet bowl body 2, and the flush water is supplied from the water discharge portion 20 on the surface between the rim portion 16 and the filth receiving surface 14 and on the inner peripheral wall surface of the rim portion 16. Water is discharged in the forward direction of the toilet bowl to form a swirling flow. The present invention is not limited to such a form, for example, a tank portion and a Zet spouting portion that discharges wash water from below the filth receiving surface of the toilet bowl body toward the bottom of the bowl portion and the drain trap pipeline. , A pressurizing pump provided downstream of the tank portion to pressurize the washing water and supply it to the Zet spouting portion may be provided. At that time, the water level in the tank portion rises above the water stop water level, and the overflow means in the tank portion supplies the washing water to the Zet spouting portion without operating the pressurizing pump. As a result, the washing water is supplied to the water reservoir, and the washing water is supplied from the drain trap pipeline to the horizontal pipe.

1 Flush toilet 2 Toilet body (toilet)
4 Bowl part 5 Water supply valve 6 Control part 7 Overflow means 8 Drain trap pipeline (drainage channel)
8a Inlet 8b Downhill 9 Drainage socket 10 Water storage tank (tank part)
11 Operation lever 12 Horizontal piping 14 Sewage receiving surface 15 Drain valve 16 Rim part 20 Water discharge part 62 Timekeeping means 64 Memory 100 Flush toilet 200 Sanitary cleaning device 210 Nozzle 220 Control unit F Floor surface S Washing water source

Claims (1)

A flush toilet that cleans the toilet bowl with the wash water supplied from the wash water source and discharges filth to the horizontal pipe.
Based on a bowl portion having a bowl-shaped filth receiving surface, a drainage channel connected below the bowl portion to discharge filth, a water discharge portion that discharges wash water to the bowl portion, and a cleaning operation by the user. A control unit that controls water discharge from the water discharge unit, a tank unit that stores wash water, a water supply valve that discharges or stops the wash water supplied from the wash water source to the tank unit, and a control that controls the water supply valve. A drain valve for draining or stopping the wash water from the tank section to the water discharge section, and a drain valve for washing water to the bowl section without opening and closing the drain valve when the water level in the tank section rises above the water stop water level. Equipped with an overflow means to drain the water,
The control unit is a flush toilet that supplies wash water into the tank portion by the water supply valve and discharges the wash water to the bowl portion by the overflow means when a predetermined time elapses after cleaning the toilet bowl.

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