Water-washing toilet device

Abstract

The present invention aims to provide a flush toilet device that can adequately transport waste within drainage pipes according to the condition of the drainage pipes on the building side. [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 for receiving waste and a rim portion 14 formed above the waste receiving surface 12; a drain trap pipe 16 connected below the bowl portion 15 for discharging waste; 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; an input unit for inputting piping information which is information related to the drainage pipe; and a control device 74 configured to control the flushing water supply device, wherein the control device 74 is configured to control the flushing water supply device based on the piping information input to the input unit to change the flow rate or discharge time of flushing water discharged from the water outlet.

Description

Technical Field

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

Background Art

[0002] Conventionally, as described in Patent Document 1, there is known a flush toilet device that measures the sewage conveyance speed in a drainage pipe on the building side and changes the amount of washing water based on the measurement result. In such a flush toilet device, when the sewage conveyance speed in the drainage pipe is slow, it is determined that sewage or the like is clogged in the drainage pipe, and the amount of washing water is increased.

[0003] Also, as described in Patent Document 2, there is known a flush toilet that detects whether or not a siphon action has occurred in a drainage pipe on the building side and changes the amount of washing water based on the detection result. In such a flush toilet device, when it is detected that a siphon action has occurred in the drainage pipe, it is determined that sewage or the like is clogged in the drainage pipe and ventilation is insufficient, and the amount of washing water is increased to replenish the accumulated water in the drainage trap pipe.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the flush toilet devices described in Patent Documents 1 and 2 are configured to change the amount of flushing water based on the state of waste transport within the drainage piping, but they are not configured to change the amount of flushing water based on the condition of the drainage piping on the building side (for example, the length of the drainage piping, the number of bends, and the gradient). For this reason, for example, if the gradient of the drainage piping on the building side is gentle, there is a problem that waste may not be transported within the drainage piping. Furthermore, the gradient of the drainage piping changes due to, for example, ground subsidence or rise of the soil in which the drainage piping is buried, deformation of the building itself, or deterioration of the drainage piping connections over time. Therefore, even if waste can be transported when the system is first installed, it may not be able to transport waste after a few years.

[0006] Therefore, the present invention was made to solve the above-mentioned conventional problems, and aims to provide a flush toilet device that can adequately transport waste in the drainage pipes according to the condition of the drainage pipes on the building side. [Means for solving the problem]

[0007] 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, an input unit for inputting piping information which is information about the drainage piping, and a control device configured to control the flushing water supply device, wherein the control device is configured to control the flushing water supply device based on the piping information input to the input unit to change the flow rate or discharge time of the flushing water discharged from the spout.

[0008] In the present invention configured in this way, the control device is configured to control the cleaning water supply device based on the piping information input to the input unit to change the discharge flow rate or discharge time of the cleaning water discharged from the discharge port, thereby enabling sufficient transport of waste in the drainage pipes according to the condition of the drainage pipes on the building side.

[0009] In the present invention, preferably, the piping information is information regarding the state of the drainage piping or the time when the drainage piping was installed. In the present invention configured in this way, the piping information is information regarding the state of the drainage piping or the time when the drainage piping was installed, so that waste in the drainage piping can be adequately transported according to the state of the drainage piping on the building side.

[0010] Furthermore, in the present invention, preferably, the control device includes a measuring unit that measures the elapsed time since the flush toilet device was installed in the building, and the control device is configured to control the flush water supply device to change the flow rate or discharge time of the flush water discharged from the outlet when the elapsed time reaches a predetermined value. In the present invention configured as described above, the control device includes a measuring unit that measures the elapsed time since the flush toilet device was installed in the building, and the control device is configured to control the flush water supply device to change the flow rate or discharge time of the flush water discharged from the outlet when the elapsed time reaches a predetermined value. Therefore, even if the condition of the drainage piping on the building side changes due to, for example, ground subsidence or rise of the soil in which the drainage piping is buried, deformation of the building itself, or deterioration of the connection part of the drainage piping over time, the waste in the drainage piping can be adequately transported.

[0011] In the present invention, preferably, the control device includes a rim outlet provided on the rim portion for discharging cleaning water toward the bowl portion, and a jet outlet provided below the bowl portion for discharging cleaning water toward the inlet of the drain trap pipe. The cleaning water supply device is configured to supply cleaning water to at least the jet outlet, and the control device is configured to control the cleaning water supply device based on piping information input to the input unit to change the discharge flow rate or discharge time of the cleaning water discharged from the jet outlet. In the present invention configured as described above, the control device includes a rim outlet provided on the rim portion for discharging cleaning water toward the bowl portion, and a jet outlet provided below the bowl portion for discharging cleaning water toward the inlet of the drain trap pipe. The cleaning water supply device is configured to supply cleaning water to at least the jet outlet. The control device is configured to control the cleaning water supply device based on piping information input to the input unit to change the discharge flow rate or discharge time of the cleaning water discharged from the jet outlet. As a result, the force of the cleaning water discharged from the jet outlet and the amount of water carried by the waste and toilet paper to be transported can be increased, thereby enabling sufficient transport of waste in the drain pipe.

[0012] Furthermore, in the present invention, preferably, the control device is configured to control the cleaning water supply device so that a first jet of water is discharged from the jet outlet at a first flow rate, and then a second jet of water is discharged at a second flow rate that is less than the first flow rate, and the control device is configured to control the cleaning water supply device based on the piping information input to the input unit to change the discharge time of the second jet of water. In the present invention configured as described above, the control device is configured to control the flushing water supply device so that it discharges a first jet of water from the jet outlet at a first flow rate, and then discharges a second jet of water at a second flow rate that is less than the first flow rate. The control device is configured to control the flushing water supply device based on the piping information input to the input unit to change the discharge time of the second jet of water, thereby ensuring the waste discharge performance of the toilet bowl while adequately transporting waste in the drainage pipe.

[0013] In the present invention, preferably, the cleaning water supply device is configured to supply cleaning water to the rim outlet, and the control device is configured to decrease the amount of cleaning water discharged from the rim outlet and increase the amount of cleaning water discharged from the jet outlet based on the piping information input to the input unit. In the present invention configured as described above, the cleaning water supply device is configured to supply cleaning water to the rim outlet, and the control device is configured to reduce the amount of cleaning water discharged from the rim outlet and increase the amount of cleaning water discharged from the jet outlet based on the piping information input to the input unit, thereby enabling sufficient transport of waste in the drainage pipe while conserving water. [Effects of the Invention]

[0014] According to the flush toilet device of the present invention, waste in the drainage pipe can be adequately transported according to the condition of the drainage pipe 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 flowchart shows the initial setup and modification flow of the flushing sequence for a flush toilet device according to an embodiment of the present invention. [Figure 5A] This figure shows the jet water flushing sequence in a standard pattern of a flush toilet device according to an embodiment of the present invention. [Figure 5B] This figure shows the flushing sequence of a water jet in a medium water volume pattern for a flush toilet device according to an embodiment of the present invention. [Figure 5C]It is a diagram showing the cleaning sequence of jet water discharge in the large water volume pattern of the flush toilet device according to the embodiment of the present invention.

Embodiments for Carrying Out the Invention

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

[0017] As shown in FIGS. 1 and 2, the flush toilet device 1 according to the 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 cleaning water to the toilet body 2, a water storage tank 8 for storing the cleaning water, and a pressurizing pump 10 for supplying the cleaning water stored in the water storage tank 8 to the toilet body 2. In the present embodiment, the case where the flush toilet device is a siphon jet type toilet will be described, but it is not limited thereto, and the flush 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, a bowl portion 15, and a drain trap pipe 16 connected to the bottom below the bowl portion 15 for discharging dirt. A rim water channel 18 is formed inside the rim portion 14, and a rim water discharge port 20a (water discharge port) for discharging rim water is formed at the downstream end of the rim water channel 18. The rim water discharge port 20a is formed in the front right of the bowl portion 15 when the flush toilet device 1 is viewed from the front, and discharges the cleaning water backward to form a swirling flow along the inner peripheral surface of the rim portion 14.

[0019] Furthermore, a jet water channel 22 is formed below the toilet bowl body 2, and a jet water outlet 24a (outlet) is formed at the jet water discharge section 24, which is the downstream end of this jet water channel 22, to discharge water in a jet. The jet water outlet 24a is located at the bottom of the bowl section 15 and is positioned almost horizontally facing the inlet 16a of the drain trap pipe 16, and is designed to discharge flushing 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 results detected by the line sensor 70, a toilet flushing switch 76, and a piping information input switch 78.

[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 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, but instead of this line sensor, a camera that images objects that have fallen into the bowl section 15 or an ultrasonic distance sensor that measures the height of the water level using ultrasound may be used. Also, 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 the toilet lid 4d.

[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, piping information input switch 78, 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 stores a predetermined number of flushing sequences (water flow rate and water discharge time), and a measurement unit 74b that measures the elapsed time since the flush toilet device 1 was installed in the building.

[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 to execute a flushing sequence in which flushing water is first discharged from the rim outlet 20a, then, while flushing water is being discharged from the rim outlet 20a, flushing water is discharged from the jet outlet 24a, and finally, flushing water is discharged from the rim outlet 20a. Furthermore, when piping information is input via the piping information input switch 78, the control device 74 is configured to select one of a plurality of flushing sequences stored in the storage unit 74a based on the information regarding the drainage piping, and to control the electromagnetic valve 40, the water supply channel switching valve 42, and the pressure pump 10 to execute the selected flushing sequence.

[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] The toilet flushing switch 76 and the piping information input switch 78 are provided on a remote control mounted on the wall. The piping information input switch 78 (input section) is configured to allow input of information regarding the building's drainage piping, such as the condition of the drainage piping on the building side (for example, the length of the drainage piping, the number of bends, and the gradient) and the time when the drainage piping was installed. In this embodiment, the piping information input switch 78 is provided separately from the toilet flushing switch 76, but they may be configured as a common switch. Also, although the piping information input switch 78 is provided on the remote control, it may be provided on the main body 4a of the local flushing device 4, or it may be provided separately on the toilet body 2.

[0040] Next, the initial setup and modification of the flushing sequence of the flush toilet device 1 according to an embodiment of the present invention will be described. Figure 4 is a flowchart showing the initial setup and modification flow of the flushing sequence of a flush toilet device according to an embodiment of the present invention. In Figure 4, S represents each step.

[0041] As shown in Figure 4, after the flush toilet unit 1 is installed inside the building during construction, in S1, the power plug connected to the flush toilet unit 1 is inserted into the outlet, supplying power to the flush toilet unit 1. As a result, the flush toilet unit 1 is turned ON (powered on).

[0042] In S2, the piping information input switch 78 on the remote control is operated to input "information regarding the state of the drainage piping" as information regarding the drainage piping on the building side. Information regarding the state of the drainage piping includes, for example, the length of the drainage piping, the number of bends, and the gradient. Once this information is input, the process proceeds to S3. If this information is unknown, the information regarding the state of the drainage piping is not input, and S2 is skipped, and the process proceeds to S3. In this embodiment, the length of the drainage piping, the number of bends, and the gradient are input as information regarding the state of the drainage piping, but it is also possible to input only one of these pieces of information, or to input other pieces of information.

[0043] In S3, the piping information input switch 78 on the remote control is operated to input "the installation date of the drainage piping" as information regarding the drainage piping on the building side. The installation date is, for example, the year, month, and day the drainage piping was installed. Once this information is entered, the process proceeds to S4. If this information is unknown, the installation date of the drainage piping is not entered, and S3 is skipped, and the process proceeds to S4. In this embodiment, the year, month, and day are entered as the installation date of the drainage piping, but it is also possible to enter only the year and day. Furthermore, the installation date of the drainage piping is the date the building was constructed or the date the drainage piping was laid in the soil, but it may be set as appropriate, such as the completion date or the building handover date.

[0044] In S4, the control device 74 selects one of several flushing sequences (standard pattern, medium water volume pattern, and large water volume pattern shown in Figures 6A to 6C) stored in the memory unit 74a based on the information about the drainage piping input in S2 and S3, and initializes the selected flushing sequence as the normal flushing sequence for toilet flushing. For example, if the gradient of the drainage piping input in S2 is less than a first predetermined value, the control device 74 sets the flushing sequence for toilet flushing to the "medium water volume pattern (Figure 6B)," and if it is less than a second predetermined value which is smaller than the first predetermined value, the flushing sequence for toilet flushing is set to the "large water volume pattern (Figure 6C)." Also, for example, if the installation period of the drainage piping input in S3 is between 20 years and 30 years ago, the control device 74 sets the flushing sequence for toilet flushing to the "medium water volume pattern," and if it is 30 years or more ago, the flushing sequence for toilet flushing is set to the "large water volume pattern." Furthermore, if no information regarding the drainage piping is input in S2 and S3, the control device 74 sets the flushing sequence for toilet flushing to the "standard pattern (Figure 6A)".

[0045] After the initial setup is complete, when the toilet flushing switch 76 is pressed, one of the flushing sequences set in S4—"standard pattern," "medium water volume pattern," and "large water volume pattern"—will be executed. Details of the flushing sequences for each pattern will be described later.

[0046] In S5, after the flush toilet unit 1 has been used for some time, it is determined whether a predetermined period has elapsed since the flush toilet unit 1 was installed in the building. This elapsed time is measured by the measurement unit 74b of the control device 74 since the flush toilet unit 1 was installed in the building. Also, if the installation date of the drainage piping was entered in S3, it is determined whether a predetermined period has elapsed since the installation date of the drainage piping. For example, a predetermined period of 20 or 30 years may be set, and when the time measured by the measurement unit 74b reaches 20 or 30 years, it is considered that the predetermined period has elapsed. If the predetermined period has elapsed since the flush toilet unit 1 was installed in the building, the process proceeds to S6 (S5; Yes), and if the predetermined period has not elapsed, the measurement unit 74b continues to measure the elapsed time (S5; No).

[0047] In S6, if a predetermined period of time has elapsed since the installation of the flush toilet device 1 in the building, the control device 74 sets a new normal flushing sequence for toilet flushing. For example, if 20 years have passed, the control device 74 sets the flushing sequence for toilet flushing to the "medium water volume pattern," and if 30 years have passed, it sets the flushing sequence for toilet flushing to the "large water volume pattern." For subsequent toilet flushes, when the toilet flushing switch 76 is pressed, the flushing sequence set in S6 is executed. This ensures that waste can be adequately transported through the drainage pipes even if the drainage pipes have changed due to, for example, ground subsidence or rise of the soil in which the drainage pipes are buried, deformation of the building itself, or deterioration of the connections of the drainage pipes over time, making it difficult for waste to be transported through the drainage pipes. This completes the initial setup and modification flow for the flushing sequence of the flush toilet device 1.

[0048] Next, with reference to Figures 5A to 5C, the flushing sequences for each pattern of the flush toilet device 1 according to embodiments of the present invention will be described. Figures 5A to 5C show the flushing sequence of jet water discharge in each pattern of a flush toilet device according to an embodiment of the present invention. In Figures 5A to 5C, the vertical axis represents flow rate (liters / minute), and the horizontal axis represents time (seconds).

[0049] First, as shown in Figures 5A to 5C, the jet discharge cleaning sequence in each pattern is set to perform a first jet discharge with a first flow rate to generate a siphon effect, and then a second jet discharge with a second flow rate lower than the first flow rate. As a result, the first jet discharge with the first flow rate fills the drain trap pipe 16 quickly, generating a siphon effect. Then, the second jet discharge with the second flow rate continues the siphon effect, and the return water and remaining sludge from the drain trap pipe 16 are pushed back.

[0050] In each pattern, the flushing sequence for the jet discharge is set so that the flushing sequence (flow rate and discharge time) is the same for the first jet discharge, while the flushing sequence is changed for the second jet discharge. In other words, by changing the flushing sequence for the second jet discharge without changing the flushing sequence for the first jet discharge, flushing water is supplied to the drain pipe according to the condition of the drain pipe. The amount of flushing water used for toilet flushing in each pattern is set to 4.8 liters for the "standard pattern", 5 liters for the "medium volume pattern", and 6 liters for the "high volume pattern".

[0051] As shown in Figure 5A, the jet discharge cleaning sequence in the "standard pattern" involves, as the first jet discharge, setting the rotation speed of the pressurizing pump 10 to the first rotation speed and continuously discharging cleaning water from the jet outlet 24a at a first flow rate Q1 for approximately 1.0 second. The first flow rate Q1 is set to the maximum flow rate (100%) that can be discharged from the jet outlet 24a. This causes the drain trap pipe 16 to fill up quickly, generating a siphon effect.

[0052] Furthermore, in the "standard pattern," the jet discharge cleaning sequence involves a second jet discharge, where the rotation speed of the pressurizing pump 10 is set to a second rotation speed lower than the first rotation speed, and cleaning water is continuously discharged from the jet outlet 24a at a second flow rate Q2 that is less than the first flow rate Q1 for approximately 1.5 seconds. The second flow rate Q2 is set to approximately 80% of the maximum flow rate (first flow rate Q1) that can be discharged from the jet outlet 24a. This ensures that the siphon action continues and pushes back the return water and residual waste from the drain trap pipe 16.

[0053] As shown in Figure 5B, in the "medium water flow pattern," the jet discharge cleaning sequence is as follows: as the first jet discharge, the pressure pump 10 is set to the first rotation speed, and cleaning water is continuously discharged from the jet outlet 24a at the first flow rate Q1 for approximately 1.0 second, similar to the standard pattern. As a result, the drain trap pipe 16 is filled with water quickly, and a siphon effect occurs, similar to the standard pattern.

[0054] Furthermore, in the "medium water volume pattern," the flushing sequence for jet discharge involves setting the rotation speed of the pressurizing pump 10 to a third rotation speed, lower than the first and second rotation speeds, as the second jet discharge. This causes flushing water to be continuously discharged from the jet outlet 24a at a third flow rate Q3, which is less than the second flow rate Q2, for approximately 2.0 seconds. The third flow rate Q3 is set to approximately 65% ​​of the maximum flow rate (first flow rate Q1) that can be discharged from the jet outlet 24a, and this flow rate is set to the minimum flow rate that allows the siphon effect to continue. This ensures that flushing water can be supplied to the drainage piping for a long period of time while maintaining the waste discharge performance of the toilet bowl. The flushing water supplied to the drainage piping flows through the drainage piping at a flow rate of approximately 0.5 liters / second or more, ensuring that the waste in the drainage piping is adequately transported.

[0055] As shown in Figure 5C, the jet discharge cleaning sequence in the "high water volume pattern" is the same as the standard pattern. As the first jet discharge, the pressure pump 10 is set to the first rotation speed, and cleaning water is continuously discharged from the jet outlet 24a at the first flow rate Q1 for approximately 1.0 second. This fills the drain trap pipe 16 quickly, as in the standard pattern, and a siphon effect occurs.

[0056] Furthermore, in the "high water volume pattern," the jet discharge flushing sequence involves setting the rotation speed of the pressurizing pump 10 to a third rotation speed, lower than the first and second rotation speeds, as a second jet discharge. This causes flushing water to be continuously discharged from the jet outlet 24a for approximately 3.0 seconds at a third flow rate Q3, which is less than the second flow rate Q2. This ensures that flushing water can be supplied to the drain piping for a longer period of time while maintaining the waste discharge performance of the toilet bowl. The flushing water supplied to the drain piping flows through the drain piping at a flow rate of approximately 0.5 liters / second or more, ensuring that waste within the drain piping is adequately transported.

[0057] Thus, in the "medium water flow pattern" and "high water flow pattern," the amount of cleaning water discharged from the jet outlet 24a is increased compared to the "standard pattern." The increase in the amount of cleaning water discharged from the jet outlet 24a is achieved by the control device 74 controlling the water supply channel switching valve 42 to change the ratio of water flow and volume to the rim side and the tank side. Specifically, during jet discharge, the control device 74 rotates the rotor of the water supply channel switching valve 42 to decrease the ratio of water flow and volume to the rim side water supply channel 44 and increase the ratio of water flow and volume to the tank side water supply channel 46. As a result, cleaning water is supplied from the tank side water supply channel 46 to the water storage tank 8 during jet discharge, and this cleaning water supplied to the water storage tank 8 is discharged from the jet outlet 24a together with the cleaning water that was previously stored in the water storage tank 8. In this way, the amount of cleaning water discharged from the rim outlet 20a is reduced, and the amount of cleaning water discharged from the jet outlet 24a is increased.

[0058] 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 (pressurizing pump 10, water supply channel switching valve 42, electromagnetic on / off valve 40) based on the piping information input to the input unit (piping information input switch 78) to change the flow rate or discharge time of the flush water discharged from the jet outlet 24a. Therefore, waste in the drainage pipe can be sufficiently transported according to the condition of the drainage pipe on the building side (actual condition and / or predicted condition of the drainage pipe).

[0059] Furthermore, in the flush toilet device 1 according to the embodiment of the present invention, the piping information is information regarding the state of the drainage piping (such as the length of the drainage piping, the number of bends, and the gradient) or the time when the drainage piping was installed. Therefore, waste in the drainage piping can be adequately transported according to the state of the drainage piping on the building side (the actual state and / or predicted state of the drainage piping).

[0060] In the flush toilet device 1 according to an embodiment of the present invention, the control device 74 includes a measuring unit 74b that measures the elapsed time since the flush toilet device 1 was installed in the building, and the control device 74 is configured to control the flush water supply device to change the discharge flow rate or discharge time of the flush water discharged from the jet outlet 24a when the elapsed time reaches a predetermined value, so that even if the condition of the drainage piping on the building side changes due to, for example, ground subsidence or rise of the soil in which the drainage piping is buried, deformation of the building itself, or deterioration of the connection part of the drainage piping over time, the waste in the drainage piping can be sufficiently transported.

[0061] Furthermore, in the flush toilet device 1 according to an embodiment of the present invention, the control device includes a rim outlet 20a provided on the rim portion that discharges flushing water toward the bowl portion, and a jet outlet 24a provided below the bowl portion that discharges flushing water toward the inlet of the drain trap pipe. The flushing water supply device is configured to supply flushing water to at least the jet outlet 24a. The control device 74 is configured to control the flushing water supply device based on piping information input to the input unit to change the discharge flow rate or discharge time of the flushing water discharged from the jet outlet 24a. By increasing the force of the flushing water discharged from the jet outlet 24a and the backwater that is held back by the waste and toilet paper to be transported, the waste in the drain pipe can be sufficiently transported.

[0062] 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 so that a first jet of water is discharged from the jet outlet 24a at a first flow rate Q1, and then a second jet of water is discharged at a second flow rate Q2 or a third flow rate Q3 which is less than the first flow rate Q1. The control device 74 is configured to control the flush water supply device based on the piping information input to the input unit to change the discharge time of the second jet of water, so that the waste in the drain pipe can be sufficiently transported while ensuring the waste discharge performance of the toilet.

[0063] Furthermore, in the flush toilet device 1 according to an embodiment of the present invention, the flush water supply device is configured to supply flush water to the rim outlet 20a, and the control device 74 is configured to reduce the amount of flush water discharged from the rim outlet 20a and increase the amount of flush water discharged from the jet outlet 24a based on the piping information input to the input unit, so that waste in the drain pipe can be sufficiently transported while saving water.

[0064] 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]

[0065] 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 76: Toilet flushing switch 78: Piping information input switch Q1: 1st flow rate Q2: 2nd flow rate Q3: Third flow rate

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, An input unit for inputting piping information, which is information related to the drainage piping mentioned above, A control device configured to control the above-mentioned washing water supply device, It has, The above-mentioned control device is configured to control the flushing water supply device based on the piping information input to the above-mentioned input unit, thereby changing the water flow rate or water discharge time of the flushing water discharged from the water outlet.

2. The flush toilet device according to claim 1, wherein the above piping information is information relating to the state of the above drainage piping or the time when the above drainage piping was installed.

3. The above control device includes a measuring unit that measures the elapsed time since the above flush toilet device was installed in the above building, The flush toilet device according to claim 1 or 2, wherein the control device is configured to control the flush water supply device to change the flow rate or discharge time of the flush water discharged from the outlet when the elapsed time reaches a predetermined value.

4. A rim outlet is provided on the rim portion and discharges cleaning water toward the bowl portion, A jet nozzle is provided below the bowl section and discharges cleaning water toward the entrance of the drain trap pipe, Equipped with, The above-mentioned cleaning water supply device is configured to supply cleaning water to at least the above-mentioned jet outlet, The flush toilet device according to claim 1, wherein the control device is configured to control the flush water supply device based on the piping information input to the input unit to change the flow rate or discharge time of the flush water discharged from the jet nozzle.

5. The control device is configured to control the cleaning water supply device so that it first discharges a first jet of water from the jet outlet at a first flow rate, and then discharges a second jet of water at a second flow rate that is less than the first flow rate. The flush toilet device according to claim 4, wherein the control device is configured to control the flush water supply device based on the piping information input to the input unit to change the discharge time of the second jet of water.

6. The above-mentioned cleaning water supply device is configured to supply cleaning water to the above-mentioned rim outlet, The flush toilet device according to claim 4 or 5, wherein the control device is configured to reduce the amount of flushing water discharged from the rim outlet and increase the amount of flushing water discharged from the jet outlet based on the piping information input to the input unit.

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