Water-washing toilet device

Abstract

The present invention aims to provide a flush toilet system that can foresee and prevent blockages in the drainage pipes of a building. [Solution] The present invention relates to a flush toilet device 1 connected to a drainage pipe on the building side for discharging waste, comprising: a bowl portion 15 having a waste receiving surface 12 and a rim portion 14; a drain trap pipe 16; a water outlet provided in the bowl portion 15 for discharging flushing water; a flushing water supply device for supplying flushing water to the water outlet; a detection unit for detecting objects that have fallen into the bowl portion 15; a storage unit 74a for storing the number of times the detection unit has detected objects; and a control device 74 configured to control the flushing water supply device based on the number stored in the storage unit 74a, wherein the control device 74 is configured to control the flushing water supply device to change the amount of flushing water discharged from the water outlet when the number stored in the storage unit 74a reaches a first predetermined number.

Description

Technical Field

[0001] The present invention relates to a flushing toilet device, particularly a flushing toilet device that is connected to a building-side drainage pipe and discharges sewage.

Background Art

[0002] Conventionally, as described in Patent Document 1, there is known a flushing toilet device that determines the type and amount of sewage discharged into the bowl. Such a flushing toilet device is configured to change the amount of flushing water supplied to the toilet based on the determination result of the type and amount of sewage. Specifically, the amount of flushing water is changed depending on whether the sewage is sewage that floats on the accumulated water or sewage that sinks in the accumulated water. As a result, the sewage is surely discharged outside the toilet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, although the flushing toilet device described in Patent Document 1 surely discharges the sewage outside the toilet by changing the amount of flushing water, there is a problem that the sewage may clog in the building-side drainage pipe after being discharged outside the toilet. In addition, there are cases where paper towels, ballpoint pens, or sanitary products that do not dissolve in water may flow into the toilet, and it has become increasingly important in recent years to anticipate and prevent clogging of the building-side drainage pipe.

[0005] Therefore, the present invention has been made to solve the above-described conventional problems, and an object thereof is to provide a flushing toilet device that can anticipate and prevent clogging of the building-side drainage pipe. [Means for solving the problem]

[0006] To achieve the above-mentioned objective, the flush toilet device is connected to the drainage piping on the building side to discharge waste, and comprises a bowl portion having a waste receiving surface for receiving waste and a rim portion formed above the waste receiving surface, a drain trap pipe connected below the bowl portion for discharging waste, a spout provided in the bowl portion for discharging flushing water, a flushing water supply device for supplying flushing water to the spout, a detection unit for detecting objects that have fallen into the bowl portion, a storage unit for storing the number of times the detection unit has detected objects, and a control device configured to control the flushing water supply device based on the number stored in the storage unit, wherein the control device is configured to control the flushing water supply device to change the amount of flushing water discharged from the spout when the number stored in the storage unit reaches a first predetermined number.

[0007] In the present invention configured as described above, the control device is configured to control the cleaning water supply device and change the amount of cleaning water discharged from the outlet when the number of times stored in the memory unit reaches a first predetermined number of times, thereby enabling the prediction and prevention of blockages in the drainage pipes on the building side.

[0008] In the present invention, preferably, the control device is configured to determine whether the falling object is waste or toilet paper, foreign matter other than waste and toilet paper, or unknown. In the present invention configured in this way, the control device is configured to determine whether the falling object is filth or toilet paper, foreign matter other than filth and toilet paper, or unknown, thereby improving the accuracy of predicting blockages in the building's drainage pipes.

[0009] Furthermore, in the present invention, preferably, the control device is configured to store in the storage unit the number of times the detection unit has detected a falling object when the falling object is waste or toilet paper and the amount of waste or toilet paper is greater than a predetermined amount. In the present invention configured as described above, the control device is configured such that when the falling object is waste or toilet paper, and the amount of waste or toilet paper exceeds a predetermined amount, the detection unit stores in the memory the number of times the falling object has been detected. This makes it possible to further improve the accuracy of predicting blockages in the drainage pipes on the building side.

[0010] In the present invention, preferably, the control device is configured to store in the storage unit the number of times the detection unit has detected a falling object when the falling object is unknown. In the present invention configured in this way, the control device is configured to store in the memory the number of times the detection unit has detected a fallen object when the object is unknown, thereby improving the accuracy of predicting blockages in the drainage pipes on the building side.

[0011] Furthermore, in the present invention, preferably, the control device is configured to change the water flow rate or water discharge time of the flushing water discharged from the water outlet, or to repeat and execute multiple toilet flushes, when the number of times stored in the memory unit reaches a first predetermined number. In the present invention configured as described above, the control device is configured to change the water flow rate or discharge time of the flushing water discharged from the water outlet, or to repeat the toilet flushing process multiple times, when the number of times stored in the memory unit reaches a first predetermined number of times. This prevents blockage of the drainage pipes on the building side.

[0012] In the present invention, preferably, the control device is configured to prohibit or notify the execution of toilet flushing when the number of times stored in the memory unit reaches a second predetermined number that is greater than a first predetermined number. In the present invention configured in this way, the control device is configured to prohibit or notify the execution of toilet flushing when the number of times stored in the memory unit reaches a second predetermined number that is greater than a first predetermined number, so that a blockage in the drainage pipe on the building side can be notified, for example, to the facility manager.

[0013] Furthermore, in the present invention, preferably, the control device is configured to reset the count when the number of times stored in the memory unit reaches a second predetermined number. In the present invention configured in this way, the control device is configured to reset the count when the number of times stored in the memory unit reaches a second predetermined number, thereby improving the accuracy of predicting blockages in the drainage pipes on the building side. [Effects of the Invention]

[0014] According to the flush toilet device of the present invention, it is possible to foresee and prevent blockages in the drainage pipes on the building side. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view of a flush toilet device according to an embodiment of the present invention. [Figure 2] This is an overall configuration diagram of a flush toilet device according to an embodiment of the present invention. [Figure 3] This is a block diagram showing a configuration related to a control device for a flush toilet according to an embodiment of the present invention. [Figure 4] This is a flowchart illustrating how to change the toilet flushing mechanism in a flush toilet system according to an embodiment of the present invention in order to foresee a blockage in the drainage piping on the building side. [Modes for carrying out the invention]

[0016] A flush toilet device according to an embodiment of the present invention will be described below with reference to the attached drawings. First, the overall configuration of a flush toilet device according to an embodiment of the present invention will be explained with reference to Figures 1 to 3. FIG. 1 is a perspective view of a flushing toilet device according to an embodiment of the present invention, FIG. 2 is an overall configuration diagram of the flushing toilet device according to the embodiment of the present invention, and FIG. 3 is a block diagram showing a configuration related to a control device of the flushing toilet device according to the embodiment of the present invention.

[0017] As shown in FIGS. 1 and 2, a flushing toilet device 1 according to an embodiment of the present invention is a siphon jet type toilet, and includes a ceramic toilet body 2, a local cleaning device 4 disposed on the upper surface of the toilet body 2, a valve unit 6 for supplying washing water to the toilet body 2, a water storage tank 8 for storing washing water, and a pressurizing pump 10 for supplying the washing water stored in the water storage tank 8 to the toilet body 2. In this embodiment, the case where the flushing toilet device is a siphon jet type toilet will be described, but the present invention is not limited thereto, and the flushing toilet device may be a siphon type toilet or a wash-down type toilet.

[0018] The toilet body 2 includes a bowl-shaped dirt receiving surface 12 for receiving dirt and a rim portion 14 formed above the dirt receiving surface 12, and a bowl portion 15, and a drain trap pipe 16 connected to the bottom below the bowl portion 15 for discharging dirt is formed. Inside the rim portion 14, a rim water channel 18 is formed, and at a rim water discharge portion 20 which is the downstream end of the rim water channel 18, a rim water discharge port 20a (water discharge port) for discharging rim water is formed. The rim water discharge port 20a is formed on the front right side of the bowl portion 15 when the flushing toilet device 1 is viewed from the front, and discharges washing water backward to form a swirling flow along the inner peripheral surface of the rim portion 14.

[0019] Also, below the toilet body 2, a jet water channel 22 is formed, and at a jet water discharge portion 24 which is the downstream end of the jet water channel 22, a jet water discharge port 24a (water discharge port) for discharging jet water is formed. The jet water discharge port 24a is located at the bottom of the bowl portion 15, is disposed substantially horizontally and directed toward an inlet 16a of the drain trap pipe 16, and discharges washing water toward the inlet 16a of the drain trap pipe 16.

[0020] The drain trap pipe 16 consists of an inlet 16a, an ascending pipe 16b rising from the inlet 16a, and a descending pipe 16c descending from the ascending pipe 16b, with the top 16d located between the ascending pipe 16b and the descending pipe 16c. A drain socket 26 is connected to the lower end of the descending pipe 16c of the drain trap pipe 16. The drain socket 26 is connected to a building-side drain pipe (not shown) installed on the floor surface of the building.

[0021] As shown in Figure 1, the local cleaning device 4 comprises a main body 4a, a cleaning nozzle 4b that is movable forward and backward from the main body 4a, a toilet seat 4c that is rotatably attached to the main body 4a, and a toilet lid 4d that is rotatably attached to the main body 4a so as to cover the toilet seat 4c.

[0022] As shown in Figure 2, the valve unit 6 is equipped with a main water supply channel 30 from which flushing water is supplied from the water supply pipe 28, which is the water source. This main water supply channel 30 is equipped with a constant flow valve 38, a diaphragm-type solenoid valve 40, and a water supply channel switching valve 42, from the upstream side. Furthermore, the main water supply channel 30 upstream of the valve unit 6 is equipped with a stopcock 32, a strainer 34, and a branch fitting 36, from the upstream side. The main water supply channel 30 consists of a water supply hose that connects to the water supply pipe 28 outside the toilet.

[0023] Furthermore, a rim-side water supply channel 44 for supplying cleaning water to the rim outlet 20a and a tank-side water supply channel 46 for supplying cleaning water to the water storage tank 8 are connected to the downstream side of the water supply channel switching valve 42. A rim water conduit 18 is connected to the downstream end of the rim-side water supply channel 44, so that cleaning water is supplied to the rim outlet 20a by the water supply pressure of the waterworks.

[0024] The constant flow valve 38 is used to restrict the flow rate of the cleaning water that flows in via the stopcock 32, strainer 34, and branch fitting 36 to below a predetermined flow rate. The cleaning water that has passed through the constant flow valve 38 flows into the electromagnetic valve 40, and the cleaning water that has passed through the electromagnetic valve 40 is supplied by the water supply channel switching valve 42 to the rim outlet 20a from the rim-side water supply channel 44, which is on the rim side, or to the water storage tank 8 from the tank-side water supply channel 46, which is on the tank side.

[0025] The water supply channel switching valve 42 (washing water supply device) is a switching valve that can supply washing water to both the rim-side water supply channel 44 and the tank-side water supply channel 46 at the same timing, and can arbitrarily change the ratio of water volume and flow rate to the rim side and the tank side. The water supply channel switching valve 42 is equipped with a rotor (not shown) for changing the ratio of water volume and flow rate to the rim side and the tank side, and this rotor is driven to a desired position by a motor (not shown). In this embodiment, a water supply channel switching valve is used as the washing water supply device, but instead of the water supply channel switching valve, an electromagnetic switching valve that can change the cross-sectional area of ​​the flow path may be used.

[0026] A pump-side water supply channel 48 is connected to the lower part of the water storage tank 8, and a pressurizing pump 10 equipped with a pump chamber is connected to the downstream end of this pump-side water supply channel 48. Furthermore, the pressurizing pump 10 and the jet water conduit 22 are connected by a jet-side water supply channel 50, and the pressurizing pump 10 pressurizes the cleaning water stored in the water storage tank 8 and supplies it to the jet outlet 24a.

[0027] The pressurizing pump 10 (washing water supply device) is configured to pressurize the washing water stored in the water storage tank 8 and discharge it from the jet outlet 24a at a predetermined flow rate. The pressurizing pump 10 is connected to the pump-side water supply channel 48 on its upstream side and to the jet-side water supply channel 50 on its downstream side. The pressurizing pump 10 comprises a casing 10a, an impeller 10b which is a vane that is rotatable in both forward and reverse directions within the casing, and a motor 10c which rotates the impeller 10b. It is a centrifugal pump that uses the centrifugal force generated by the rotation of the impeller 10b to pressurize and pump the washing water in the water storage tank 8. In this embodiment, a pressurizing pump is used as the washing water supply device, but instead of a pressurizing pump, a pressure-accumulating booster that stores the energy of water or an air compressor that is powered by compressed air may be used.

[0028] A vacuum breaker 52, which acts as a check valve, is provided in the rim-side water supply channel 44, and a vacuum breaker 54, which acts as a check valve, is also provided in the tank-side water supply channel 46. These vacuum breakers prevent backflow from the rim outlet 20a and the water storage tank 8. Furthermore, the wash water that overflows from the atmospheric vent of the vacuum breaker 52 in the rim-side water supply channel 44 flows into the water storage tank 8 through the return pipe 55.

[0029] The water storage tank 8 is a sealed type water storage tank, and a ball-type check valve 56 is provided at the connection between the tank-side water supply channel 46 and the water storage tank 8, and a ball-type check valve 58 is also provided at the connection between the return pipe 55 and the water storage tank 8. These ball-type check valves prevent backflow of the cleaning water even when the water storage tank 8 is full, exceeding the upper limit of the overflow channel.

[0030] A drain valve 62 is provided at the bottom of the water storage tank 8. This drain valve 62 is located below the pressure pump 10, and by opening the drain valve 62 during maintenance, the cleaning water inside the water storage tank 8 and the pressure pump 10 can be drained.

[0031] An upper float switch 64 and a lower float switch 66 are located inside the water storage tank 8. The upper float switch 64 switches to the ON state when the water level in the water storage tank 8 reaches a predetermined position L2 that is slightly lower than the maximum water level L3 during normal use, and the control device 74 detects this and closes the electromagnetic valve 40. The lower float switch 66 switches to the ON state when the water level in the water storage tank 8 drops to the minimum water level L1 during normal use, and the control device 74 detects this and stops the pressurizing pump 10.

[0032] Furthermore, an overflow channel 60 for draining excess cleaning water is provided inside the water storage tank 8. The upper end of this overflow channel 60 opens into the water storage tank 8, and its lower end is connected to the jet-side water supply channel 50. A flapper valve 67, which is a check valve, is installed in this overflow channel 60 to prevent backflow from the jet outlet 24a.

[0033] As shown in Figures 1 and 2, the flush toilet device 1 includes a seating sensor 68 for detecting the user's sitting motion, a line sensor 70 for detecting objects that have fallen into the bowl 15 after the user has defecated, a control device 74 that controls the pressurizing pump 10 based on the detection result detected by the line sensor 70, and a toilet flushing switch 76.

[0034] The seat sensor 68 is located on the underside of the left rear of the toilet seat 4c of the local washing device 4. The seat sensor 68 is a load sensor that detects the user's weight. The seat sensor 68 is configured to detect changes in weight when the user is seated on the toilet seat 4c, and to detect the start and end of defecation by the user. In this embodiment, a load sensor is used as the seat sensor 68, but an infrared distance measuring sensor or the like may be used instead of a load sensor.

[0035] The line sensor 70 (detection unit) is mounted on the main body 4a of the local cleaning device 4, facing into the bowl section 15, and is configured to detect objects that have fallen into the bowl section 15. The line sensor 70 consists of multiple light-receiving elements arranged in a straight line, and is configured to acquire one-dimensional data (linear still images) over time at predetermined time intervals. The acquired one-dimensional data is arranged in a time series by the control device 74 to generate a single two-dimensional image, which is used to determine the type and amount of objects that have fallen. In this embodiment, a line sensor is used as the detection unit, but instead of this line sensor, a camera that images objects that have fallen into the bowl section 15, an ultrasonic distance sensor that measures the height of the water level using ultrasound, a pressure sensor that detects the pressure due to changes in the water level, or a capacitance sensor that detects the volume due to changes in the water volume may be used. In addition, in this embodiment, the line sensor 70 is mounted on the main body 4a of the local cleaning device 4, but it may also be mounted on the underside of the toilet seat 4c or toilet lid 4d, or on the bowl section 15.

[0036] As shown in Figure 3, the control device 74 is electrically connected to the upper float switch 64, lower float switch 66, seat sensor 68, line sensor 70, toilet flush switch 76, electromagnetic on / off valve 40, water supply channel switching valve 42, and pressure pump 10, and is configured to communicate with various devices. The control device 74 also includes a storage unit 74a that selectively stores the number of times the line sensor 70 has detected a fallen object, and a measurement unit 74b that measures the date (Gregorian calendar date and time) on which the line sensor 70 detected the fallen object. Furthermore, the storage unit 74a stores a predetermined number of flushing sequences (water flow rate, water discharge time).

[0037] When the toilet flushing switch 76 is pressed, the control device 74 controls the electromagnetic valve 40, the water supply channel switching valve 42, and the pressure pump 10 as a normal toilet flushing system. First, flushing water is discharged from the rim outlet 20a, then flushing water is discharged from the jet outlet 24a while flushing water is still being discharged from the rim outlet 20a, and finally flushing water is discharged from the rim outlet 20a. The control device 74 is also configured to change the discharge flow rate and discharge time of the flushing water discharged from the rim outlet 20a and the jet outlet 24a.

[0038] The control device 74 is configured to generate a single two-dimensional image by arranging multiple one-dimensional data acquired from the line sensor 70 in a time series, and to determine the type and amount of objects that have fallen into the bowl section 15.

[0039] Next, a flowchart will be described relating to the toilet flushing mechanism in a flush toilet device 1 according to an embodiment of the present invention, which changes the toilet flushing mechanism in anticipation of blockages in the drainage pipes on the building side. Figure 4 is a flowchart illustrating how the toilet flushing mechanism is modified in a flush toilet system according to an embodiment of the present invention in anticipation of blockages in the building's drainage piping. In Figure 4, S represents each step.

[0040] First, in S1, it is determined whether the user is sitting on the toilet seat 4c in order to detect whether the user is defecating while standing or sitting. Specifically, if the control device 74 detects a signal from the seating sensor 68, it is determined that the user is sitting on the toilet seat 4c and the process proceeds to S2 (S1; Yes). If the control device 74 does not detect a signal from the seating sensor 68, it is determined that the user is not sitting on the toilet seat 4c (S1; No).

[0041] Next, in S2, the object that has fallen into the bowl section 15 is detected. Specifically, after the user has defecated, the object that has fallen into the bowl section 15 is detected by the line sensor 70. The line sensor 70 acquires one-dimensional data (linear still images) of the fallen object over time at predetermined time intervals. The acquired one-dimensional data is transmitted to the control device 74, which arranges multiple data points in chronological order to generate a single two-dimensional image.

[0042] Furthermore, in S3, it is determined whether or not the user has finished defecating. Specifically, if a change in signal (change in seating state) is detected from the seating sensor 68, it is determined that the user has finished defecating and the process proceeds to S4 (S3; Yes). Conversely, if the control device 74 does not detect a change in signal from the seating sensor 68, it is determined that the user has not finished defecating (S3; No).

[0043] Next, in S4, it is determined whether the object that has fallen into the bowl section 15 is waste or toilet paper. Specifically, the control device 74 compares the two-dimensional image generated in S2 with a reference image stored in the control device 74 to determine whether the object is waste or toilet paper. In comparing the two-dimensional image with the reference image, the brightness, hue, saturation, gradation, etc. of each image are quantified, and by comparing the values ​​of each image, it is determined whether the object is waste or toilet paper. If it is determined that the object that has fallen into the bowl section 15 is not waste or toilet paper, the process proceeds to S13 (S4; No). If it is determined that the object that has fallen into the bowl section 15 is waste or toilet paper, the process proceeds to S5 (S4; Yes).

[0044] Furthermore, in S5, it is determined whether the amount of waste or toilet paper is greater than or equal to a predetermined amount. Specifically, the control device 74 compares the two-dimensional image generated in S2 with a reference image pre-stored in the control device 74 to determine the amount of waste or toilet paper. In the comparison of the two-dimensional image and the reference image, the brightness, hue, saturation, gradation, etc. of each image are quantified, and the amount of waste or toilet paper is determined by comparing the values ​​of each image. If the amount of waste or toilet paper is less than the predetermined amount, the process proceeds to S6 (S5; No). If the amount of waste or toilet paper is greater than or equal to the predetermined amount, the process proceeds to S7 (S5; Yes). In this embodiment, the amount of waste or toilet paper is determined by image comparison, but instead, the amount of waste or toilet paper may be determined from the rotation speed or rotation sound of the toilet paper dispenser.

[0045] Next, in S6, the electromagnetic valve 40, the water supply channel switching valve 42, and the pressure pump 10 are controlled to perform normal toilet flushing. Specifically, in normal toilet flushing, flushing water is first discharged from the rim outlet 20a, then flushing water is discharged from the jet outlet 24a while flushing water is still being discharged from the rim outlet 20a, and finally flushing water is discharged from the rim outlet 20a. This flushes the toilet and discharges waste outside the toilet.

[0046] Meanwhile, in S7, the number of times it was determined in S5 that the amount of waste or toilet paper was greater than a predetermined amount is stored. This number is accumulated and stored in the storage unit 74a, along with the date measured by the measurement unit 74b. Furthermore, this number is reset when it reaches a second predetermined number, as will be described later.

[0047] Next, in S8, it is determined whether the cumulative number of times is equal to or greater than the first predetermined number. If it is determined that the cumulative number of times is less than the first predetermined number, the process proceeds to S6 (S8; No), and a normal toilet flush is performed. If it is determined that the cumulative number of times is equal to or greater than the first predetermined number, the process proceeds to S9 (S8; Yes).

[0048] Furthermore, in S9, it is determined whether the cumulative number of times is greater than or equal to a second predetermined number which is greater than the first predetermined number. If it is determined that the cumulative number of times is less than the second predetermined number, the process proceeds to S10 (S9; No). Here, if the cumulative number of times is greater than the first predetermined number but less than the second predetermined number, a blockage in the drainage piping on the building side is foreseen. Therefore, in S10, toilet flushing is performed with an increased volume of flushing water (discharge flow rate and / or discharge time) discharged from the jet nozzle 24a. As a result, the volume and flow rate of flushing water supplied to the drainage piping on the building side are increased, thereby preventing a blockage in the drainage piping on the building side. In this embodiment, the volume of flushing water discharged from the jet nozzle 24a is increased, but it is also possible to increase the amount of water carried by the item to be transported by repeating the toilet flushing process multiple times (for example, twice) without changing the volume of flushing water discharged from the jet nozzle 24a.

[0049] On the other hand, if it is determined that the cumulative number of times is equal to or greater than the second predetermined number, the process proceeds to S11 (S9; Yes). Here, if the cumulative number of times is equal to or greater than the second predetermined number, it is presumed that there is a blockage in the drainage piping on the building side. Therefore, in S11, the system is configured to prohibit the execution of toilet flushing so that the toilet is not flushed when the toilet flushing switch 76 is pressed. Then, in S12, the control device 74 notifies, for example, the facility manager of the blockage in the drainage piping on the building side. Specifically, the control device 74 notifies the facility manager by automatically sending an email. This allows the facility manager to know about the blockage in the drainage piping on the building side and to carry out cleaning work on the drainage piping.

[0050] Furthermore, if in S4 it is determined that the object that fell into the bowl section 15 is not waste or toilet paper (S4; No), then in S13 it is determined whether the object that fell into the bowl section 15 is a foreign object other than waste or toilet paper. Foreign objects include, for example, ballpoint pens, mobile phones, water-insoluble paper towels, or sanitary products. The control device 74 compares the two-dimensional image generated in S2 with a reference image pre-stored in the control device 74 to determine whether the object is a foreign object. In the comparison between the two-dimensional image and the reference image, the brightness, hue, saturation, gradation, etc. of each image are quantified, and the numerical values ​​of each image are compared to determine whether the object is a foreign object.

[0051] If, in S13, the object that fell into the bowl 15 is determined to be a foreign object, the process proceeds to S14 (S13; Yes). If, in this case, the object that fell into the bowl 15 is determined to be a foreign object, it is presumed that there is a blockage in the drainage piping on the building side. Therefore, in S14, the system is configured to prevent the toilet from being flushed when the toilet flushing switch 76 is pressed. Then, in S15, the control device 74 notifies, for example, the facility manager of the blockage in the drainage piping on the building side. Specifically, the control device 74 notifies the facility manager by automatically sending an email. This allows the facility manager to know about the blockage in the drainage piping on the building side and to carry out cleaning work on the drainage piping.

[0052] On the other hand, if in S13 it is determined that the object that fell into the bowl 15 is not a foreign object and is of unknown origin, the process proceeds to S16 (S13; No). In S7, the number of times in S16 it is determined that the object that fell into the bowl 15 is of unknown origin is added to the number of times in S5 it is determined that the amount of waste or toilet paper exceeds a predetermined amount and stored. When this combined number exceeds a first predetermined number (S8), the toilet is flushed with an increased volume of flushing water discharged from the jet nozzle 24a (S6), and when it exceeds a second predetermined number (S9), the toilet flushing is prohibited (S11). This concludes the process of changing the toilet flushing mechanism in the flushing toilet device 1 in anticipation of a blockage in the building's drainage piping.

[0053] Next, the effects and advantages of the flush toilet device 1 according to the embodiment of the present invention described above will be explained. First, in the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to control the flush water supply device (solenoid valve 40, water supply channel switching valve 42, and pressurizing pump 10) to change the amount of flush water discharged from the water outlets (jet water outlet 24a, rim water outlet 20a) when the number of times stored in the memory unit 74a reaches a first predetermined number of times. This makes it possible to foresee and prevent blockages in the drainage piping on the building side.

[0054] Furthermore, in the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to determine whether the falling object is waste or toilet paper, foreign matter other than waste and toilet paper, or unknown, thereby improving the accuracy of predicting blockages in the drainage pipes on the building side.

[0055] In the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to store in the storage unit 74a the number of times the detection unit (line sensor 70) has detected a falling object when the falling object is waste or toilet paper and the amount of waste or toilet paper exceeds a predetermined amount. This makes it possible to further improve the accuracy of predicting blockages in the drainage pipes on the building side.

[0056] Furthermore, in the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to store in the storage unit 74a the number of times the detection unit has detected a fallen object when the object is unknown, thereby improving the accuracy of predicting blockages in the drainage pipes on the building side.

[0057] In the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to change the water flow rate or water discharge time of the flushing water discharged from the water outlet, or to repeat the toilet flushing process multiple times, when the number of times stored in the memory unit 74a reaches a first predetermined number of times, thereby preventing blockage of the drainage pipes on the building side.

[0058] Furthermore, in the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to prohibit or notify the execution of toilet flushing when the number of times stored in the memory unit 74a reaches a second predetermined number that is greater than a first predetermined number, so that, for example, the facility manager can be notified.

[0059] In the flush toilet device 1 according to an embodiment of the present invention, the control device 74 is configured to reset the count when the number of times stored in the memory unit 74a reaches a second predetermined number, thereby improving the accuracy of predicting blockages in the drainage pipes on the building side.

[0060] The present invention is not limited to the embodiments described above, and various modifications and variations are possible within the scope of the technical idea described in the claims. [Explanation of Symbols]

[0061] 1: Flush toilet device 10: Pressure pump 12: Waste receiving surface 14: Rim section 15: Bowl Section 16: Drain trap pipe 20a: Rim outlet 24a: Jet nozzle 40: Electromagnetic valve 42: Water supply channel switching valve 70: Line Sensor 74: Control device 74a: Storage section 74b: Measurement section

Claims

1. A flush toilet device that is connected to the drainage pipe on the building side to discharge waste, A bowl portion comprising a waste receiving surface for receiving waste, and a rim portion formed above the waste receiving surface, A drain trap pipe is connected below this bowl section for discharging waste, The bowl section is provided with a spout for discharging cleaning water, A water supply device that supplies cleaning water to this outlet, A detection unit for detecting objects that have fallen into the bowl section, This detection unit has a storage unit that stores the number of times it has detected the falling object, A control device configured to control the washing water supply device based on the number of times stored in this memory unit, It has, The above-mentioned control device is configured to control the flushing water supply device and change the amount of flushing water discharged from the water outlet when the number of times stored in the storage unit reaches a first predetermined number of times.

2. The flush toilet device according to claim 1, wherein the control device is configured to determine whether the falling object is waste or toilet paper, a foreign object other than waste and toilet paper, or is unknown.

3. The flush toilet device according to claim 2, wherein the control device is configured to store in the storage unit the number of times the detection unit has detected the falling object when the falling object is waste or toilet paper and the amount of waste or toilet paper is greater than a predetermined amount.

4. The flush toilet device according to claim 2 or 3, wherein the control device is configured to store in the storage unit the number of times the detection unit has detected the fallen object when the fallen object is unknown.

5. The flush toilet device according to claim 1, wherein the control device is configured to change the water flow rate or water discharge time of the flushing water discharged from the water outlet, or to repeat and execute multiple toilet flushes, when the number of times stored in the storage unit reaches a first predetermined number of times.

6. The flush toilet device according to claim 1, wherein the control device is configured to prohibit or notify the execution of toilet flushing when the number of times stored in the storage unit reaches a second predetermined number that is greater than the first predetermined number.

7. The flush toilet device according to claim 6, wherein the control device is configured to reset the count when the number of times stored in the storage unit reaches the second predetermined number.

Images