JP7366343B2 - Flush toilet device - Google Patents

Description

The present invention relates to a faucet toilet device, and particularly to a flush toilet device that can be flushed with flush water.

Conventionally, as described in Patent Document 1, a float switch provided in a water storage tank detects the water level in the tank, and water is discharged from the water storage tank to the toilet bowl body based on the water level detected by the float switch. 2. Description of the Related Art Flush toilet devices are known that control the driving of a pump for pressurizing flush water.

In the flush toilet device described in Patent Document 1, an upper float switch and a lower float switch are provided in a water storage tank. When a lower float switch detects a drop in the water level during a large wash operation, the pressure pump is stopped, and during a small wash operation, after a predetermined period of time has elapsed using timer control after the upper float switch detects a drop in the water level. The drive of the pressure pump has been stopped.

Japanese Patent Application Publication No. 2018-100574

However, since the flush toilet device described in Patent Document 1 is timer controlled, if there is a manufacturing error in the toilet bowl, the pressure loss in the flow path from the flush water tank to the toilet bowl will change, causing the supply of water to the toilet bowl. This results in variations in the amount of washing water used.

The present invention has been made in view of the above problems, and its purpose is to provide a flush toilet device that can supply a predetermined amount of flushing water to the toilet bowl.

The flush toilet device of the present invention is a flush toilet device that can be flushed with flush water, and includes a toilet body, a flush water tank that stores flush water for cleaning the toilet bowl body, and a flush water tank that stores flush water for flushing the toilet body. The controller includes a pump device that supplies the toilet body, and a control device that controls the pump device, and the control device drives the pump device at a predetermined rotation speed to estimate the flow rate of flushing water supplied to the toilet body. There is a flow rate estimation mode that estimates the adjusted rotation speed of the pump device to supply the scheduled flow rate based on the flow rate of the washed water, and a flow rate estimation mode that drives the pump device at the adjusted rotation speed estimated in the flow rate estimation mode. The present invention is characterized in that it is possible to execute a toilet bowl cleaning mode in which flush water is supplied to the toilet bowl body.

According to the present invention having the above configuration, the adjusted rotational speed of the pump device that supplies the scheduled flow rate is estimated in the flow rate estimation mode, and the pump device is driven at the adjusted rotational speed in the toilet bowl cleaning mode, so that manufacturing errors can be avoided. Even if the pressure loss in the flow path differs depending on the toilet bowl, a predetermined amount of flushing water can be supplied to the toilet bowl.

In the present invention having the above configuration, preferably, the control device drives the pump device at a predetermined rotation speed in the flow rate estimation mode so that the water level in the wash water tank is such that air enters the pump device from a predetermined water level. a driving time acquisition step of acquiring the driving time until the water level drops to a certain water level, and based on the driving time and the volume of the portion from the predetermined water level in the cleaning water tank to the water level at which air enters the pump device, At least a flow rate estimation step of estimating the flow rate of flush water supplied to the toilet main body by the pump device is executed.

According to the present invention having the above configuration, the flow rate of the cleaning water is estimated based on the driving time until the water level drops to a level that allows air to enter the pump device, so a float switch is provided to detect the lower water level. It is possible to estimate the flow rate of cleaning water.

In the present invention, preferably, the control device is capable of detecting a current value of the pump device, and in the drive time acquisition step, the control device determines whether the water level in the wash water tank is determined by the pump device based on the current value of the pump device. It is detected that the water level has fallen to such a level that air is entering the tank.

According to the present invention having the above configuration, since the current value of the pump device changes when air enters the pump device, the water level in the wash water tank can be easily and accurately lowered to a level at which air enters the pump device. can be detected.

In the present invention, preferably, the control device executes the drive time acquisition step multiple times.

According to the present invention having the above configuration, it is possible to estimate the driving time more accurately, and it is possible to more accurately supply a predetermined amount of flushing water to the toilet bowl.

In the present invention, preferably, the control device notifies the user of the execution of the flow rate estimation mode and/or the toilet flushing mode using a notification device.

According to the present invention configured as described above, the user can identify whether the flow rate estimation mode or the toilet flushing mode is being implemented, and prevents the user from interrupting the flow rate estimation mode midway through, and from unexpected situations. Therefore, it is possible to prevent the flow rate estimation mode from being executed without first executing the flow rate estimation mode.

According to the present invention, it is possible to provide a flush toilet device that can supply a predetermined amount of flushing water to the toilet bowl.

1 is an overall configuration diagram showing a flush toilet device according to an embodiment of the present invention. FIG. 2 is a top view of the wash water tank of FIG. 1; 3 is a sectional view taken along the line III-III in FIG. 2. FIG. It is a graph which shows the performance curve for each rotation speed of a pump device, and the resistance curve which shows the pressure loss of the water passage assumed to be maintained from a pump device to a jet spout. It is a graph showing the relationship between the elapsed time from the drive of the pump device and the rotation speed (current value) in the flow rate estimation mode, and shows the case where the pressure loss is small (Cv1). It is a graph showing the relationship between the elapsed time from the drive of the pump device and the rotation speed (current value) in the flow rate estimation mode, and shows the case where the pressure loss is large (Cv2). It is a graph showing the relationship between the driving time of the pump device and the flow rate. This is a graph for explaining a method of estimating the rotation speed of the pump device such that the flow rate of cleaning water flowing through the flow path becomes a predetermined flow rate Q (L/min) based on the estimated flow rate. The case where is Q1 is shown. This is a graph for explaining a method of estimating the rotation speed of the pump device such that the flow rate of cleaning water flowing through the flow path becomes a predetermined flow rate Q (L/min) based on the estimated flow rate. The case where is Q2 is shown.

Hereinafter, a flush toilet device according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the term "flow rate" used in the following explanation refers to the amount of water flowing per predetermined time.
FIG. 1 is an overall configuration diagram showing a flush toilet device according to an embodiment of the present invention. As shown in FIG. 1, a flush toilet device 1 according to an embodiment of the present invention is a flush toilet device that uses flush water to discharge waste and clean the toilet bowl. The flush toilet device 1 includes a toilet main body 2, a water supply device 4 disposed at the rear of the toilet main body 2, and a flush water tank 6 disposed at the rear of the toilet main body 2.

The toilet bowl main body 2 is made of ceramic, and includes a bowl part 12 for receiving waste, a drain trap pipe 14 extending from the bottom of the bowl part 12, a jet spout 16 for jetting water, and a rim water spout. A rim spout 18 is formed to perform this. The jet spout 16 is formed at the bottom of the bowl portion 12 so as to horizontally face the inlet of the drain trap line 14, and discharges wash water toward the drain trap line 14. The rim spout 18 is formed at the upper left rear portion of the bowl portion 12 and discharges cleaning water along the upper edge of the bowl portion 12.

The drain trap pipe line 14 consists of an inlet part 14a, a trap rising pipe 14b rising from the inlet part 14a, and a trap descending pipe 14c descending from the trap rising pipe 14b. A top portion 14d is formed in between. A drain pipe 8 is connected to the lower end of the trap descending pipe 14c of the drain trap pipe line 14.

The flush toilet device 1 according to the present embodiment is directly connected to a water supply that supplies flush water, and flush water is discharged from the rim spout 18 by the water supply pressure of the water supply. Further, the cleaning water supplied from the water supply is stored in the cleaning water tank 20, and the cleaning water stored in the cleaning water tank 20 of the cleaning water tank 6 is sent out by the pump device 22 from the jet spout 16 at a large flow rate. It is designed to be discharged.

Next, the water supply device 4 of the flush toilet device 1 will be explained.
The water supply device 4 is for supplying washing water into the washing water tank 20 of the washing water tank 6 and also for supplying washing water to the rim spout 18 . The water supply device 4 includes an electromagnetic on-off valve 34 and a water supply channel switching valve 36 provided in the water supply channel 24 through which wash water is supplied from the water supply. A rim-side water supply channel 38 for supplying wash water to the rim spout 18 and a tank-side water supply channel 40 for supplying wash water to the wash water tank 20 are connected to the downstream side of the water supply channel switching valve 36. has been done.

By opening and closing the electromagnetic on-off valve 34, passage of the wash water from the water supply channel 24 to the downstream side can be switched. In addition, by operating the water supply channel switching valve 36 with the water supply channel 24 open, the state in which the cleaning water supplied from the water supply channel 24 is supplied to the rim spout 18 through the rim side water supply channel 38 and the state in which the water is supplied from the tank side The state in which water is supplied to the wash water tank 20 through the water supply channel 40 can be switched.

In this way, the flush toilet device 1 uses the water pressure (direct pressure) of the tap water to supply water for rim water discharge to clean the toilet bowl, and for the jet water discharge, it supplies flush water stored in the flush water tank 20. This is a hybrid type flush toilet device having a hybrid type (direct water pressure type + tank water supply type) water supply device which pressurizes water with a pump device 22 and discharges it from a jet spout 16.

Next, the cleaning water tank 6 will be described in detail with reference to FIGS. 1 to 3.
2 is a top view of the wash water tank in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG. 2.

The flush water tank 6 includes a flush water tank 20 that stores flush water for flushing the toilet bowl body 2, and a flush water tank 20 that stores flush water for flushing the toilet bowl body 2, and a flush water tank 6 that supplies flush water taken in from a water intake port 45a of a water pipe 45 provided in the flush water tank 20 to the toilet bowl body 2. A supply pump device 22, a float switch 52 provided in the wash water tank 20, an operating section 55 operated by a user, and a control device that can detect the current value of the pump device 22 and controls the pump device 22. 54, and a notification device 56 for notifying a failure of the float switch 52.

The control device 54 includes, for example, a CPU, a memory, and an ammeter, and is realized by the CPU executing a program stored in the memory. The operation unit 55 is configured by an interface such as a touch panel type or button type remote control switch, for example. Further, the notification device 56 is configured by, for example, an LED light, a liquid crystal display, a speaker, or the like.

The wash water tank 20 has at least its lower portion attached to the rear upper part of the toilet main body 2. The flush water tank 20 is a so-called low-silhouette tank that is relatively low in height when attached to the toilet main body 2.

The pump device 22 is a pump that supplies the wash water in the wash water tank 20 to the toilet main body 2. The wash water tank 20 is provided with a water pipe 45 that enters from the side and extends to the bottom thereof, and the suction side of the pump device 22 is connected to the water pipe 45. Further, the discharge side of the pump device 22 is connected to a jet side water supply channel 46 that extends to the jet water spout 16 . The pump device 22 sucks the cleaning water stored in the cleaning water tank 20, pressurizes it, and supplies it to the jet spout 16. The water pipe 45 is not limited to the configuration in which it is provided so as to pass through the inside of the wash water tank 20 as in the present embodiment, but may be connected from the outside of the wash water tank 20 to the water intake port 45a provided at the lower part of the wash water tank 20. It is also possible to have a configuration in which

The float switch 52 detects the specified upper water level, which is a reference for the full water level, in the upper part of the wash water tank. When the water level in the wash water tank 20 rises and reaches the upper specified water level, the float switch 52 sends a detection signal indicating that the water level has reached the upper specified water level. When the control device 54 receives this detection signal, it can determine that the wash water tank is almost full. The upper specified water level is a full water level, and is a water stop level of the wash water tank 20 specified for normal washing. The full water state includes not only the full water level but also water levels near the full water level.

As shown in FIG. 3, the float switch 52 includes a stem (shaft) 64 forming a rod-shaped shaft, and a stem 64 that receives buoyancy according to the water level according to fluctuations in the water level in the wash water tank 20. A float part 62 that moves up and down along. The stem 64 extends vertically downward so as to hang down from a mounting portion attached to the upper part of the wash water tank 20. The stem 64 includes a reed switch (not shown) inside the stem 64. A reed switch of the float switch 52 is electrically connected to the control device 54 . The float part 62 moves up and down according to the water level, and the reed switch, that is, the float switch 52 is switched between an ON state (ON state) and an OFF state (OFF state) according to the position of the float part 62. The float switch 52 is in the ON state when the water level in the wash water tank 20 is at the water stop level WL0 (standby water level), which is the full water level, and is in the OFF state when the water level is decreasing and falls below the upper specified water level WL1. state. Further, when the water level is lower than the upper specified water level WL1, the float switch 52 is in the OFF state, and when the water level rises again and reaches the upper specified water level WL1, it is in the ON state. Therefore, when the water level in the wash water tank 20 reaches the upper specified water level WL1, the float switch 52 issues a detection signal indicating that the water level has reached the upper specified water level WL1.

The control device 54 is electrically connected to the water supply channel switching valve 36, the pump device 22, the float switch 52, the operating section 55, the notification device 56, etc., and can mutually send and receive electrical signals, and each functional section can be operated electrically. For example, the control device 54 has a function of controlling the switching operation of the water supply channel switching valve 36, the rotation speed and operating time of the pump device 22, and the notification state of the notification device 56. Further, the control device 54 acquires information such as the current value (A) or the rotation speed (rpm) of the pump device 22. The control device 54 receives operation signals from the operation unit 55 or controls each device according to a stored program or the like. The control device 54 has a function of executing, for example, a flow rate estimation mode and a toilet bowl cleaning mode by controlling each device.

In the flow rate estimation mode, the control device 54 drives the pump device 22 at a predetermined rotation speed R while monitoring the current value of the pump device 22, and adjusts the amount of flush water supplied to the toilet bowl body based on the current value of the pump device 22. This is a mode for estimating the flow rate (L/min). The toilet bowl cleaning mode is a mode in which flushing water is supplied to the toilet bowl main body 2. In the toilet bowl flushing mode, the control device 54 adjusts the rotation speed to supply the scheduled flow rate (L/min) based on the flushing water flow rate (L/min) estimated in the flow rate estimation mode. The pump device 22 is driven by R.

The flow rate estimation mode will be explained in detail below. The flow rate estimation mode is executed, for example, during initial adjustment when the flush toilet device 1 is started to be used after construction.
First, FIG. 4 is a graph showing a performance curve for each rotation speed of the pump device and a resistance curve showing the assumed pressure loss of the water passage from the pump device to the jet spout. In Figure 4, the solid line shows the relationship between flow rate (L/min) and head (m) when the pump rotation speed is R and R'(>R). The relationship between the flow rate (L/min) and the head (m) when Cv2 is large (>Cv2) is shown by a dashed-dotted line. The actual flow rate is the flow rate at the point where the performance curve showing the pump performance at rotational speeds R and R' intersects with the resistance curve showing the pressure losses Cv1 and Cv2 of the water passage. That is, for example, when the rotation speed of the pump is R and the pressure loss of the water passage is Cv1, the flow rate is Q1 (L/min), the rotation speed of the pump is R, and the pressure loss of the water passage is Cv1. When is Cv2, the flow rate is Q2 (L/min). Furthermore, when the pump rotation speed is R' and the pressure loss in the water passage is Cv1, the flow rate is Q1' (L/min), the pump rotation speed is R', and the pressure loss in the water passage is Cv1. When the loss is Cv2, the flow rate is Q2' (L/min). The control device 54 stores data representing a performance curve representing the performance of such a pump device for each rotation speed. The control device 54 also stores data representing a resistance curve representing pressure loss for each pressure loss.

Normally, wash water is stored in the wash water tank 20 up to a water stop level WL0. When the operation unit 55 of the control device 54 receives an operation command to execute the flow rate estimation mode, the control device 54 starts driving the pump device 22 . The control device 54 causes the pump device 22 to rotate at a predetermined rotation speed R set in advance. Further, the control device 54 drives the pump device 22 and measures the current value applied to the pump device 22. When the pump device 22 is driven, the wash water in the wash water tank 20 is sucked from the water pipe 45 and supplied to the toilet main body 2. Therefore, the water level in the wash water tank 20 starts to fall from the water stop level WL0 (standby water level). At this time, rim water may be spouted by opening the electromagnetic on-off valve 34 and setting the water supply channel switching valve 36 so that the water supply channel 24 communicates with the rim spout 18, or it is not necessary to perform rim water discharging. . However, water is not supplied to the wash water tank 6.

5A and 5B are graphs showing the relationship between the elapsed time from the drive of the pump device and the rotation speed (current value) in the flow rate estimation mode, and FIG. 5A shows the case where the pressure loss is small (Cv1), FIG. 5B shows a case where the pressure loss is large (Cv2). As shown in FIGS. 5A and 5B, when the pump device is driven at t0, if cleaning water remains in the cleaning water tank 20, the pump device 22 is driven at a predetermined rotation speed, and the voltage is applied to the pump device 22. The current supplied becomes a predetermined value I. When the pump device 22 continues to be driven, the water level in the wash water tank 20 reaches the water level WL2 at the height of the water intake port 45a of the water pipe 45. When the water level in the wash water tank 20 reaches WL2, the pump device 22 is no longer able to suck the water in the wash water tank 20, so air enters the pump device 22 and the pump device 22 becomes idle. In this way, the pump device 22 becomes idle, the rotational speed of the pump device 22 increases, and the current value measured by the control device 54 becomes I' (I'>I). As shown in FIGS. 5A and 5B, when the pressure loss in the water passage is small (Cv1), the pump device 22 idles during drive time t1 and the current value increases, whereas the current value in the water passage increases. When the pressure loss is large (Cv2), the pump device 22 idles during drive time t2 (>t1) and the current value increases.

In this way, the control device 54 acquires the driving times t1 and t2 from when the pump device 22 starts rotating at a predetermined rotation speed until the current value of the pump device 22 increases (driving time acquisition step). Then, when the rotation speed of the pump device 22 increases, the control device 54 stops driving the pump device 22. Note that in this embodiment, the drive time is the time from the start of rotation of the pump device 22 until the current value increases; however, the present invention is not limited to this, and the time when the float switch 52 changes from the ON state to the OFF state is defined as the drive time. The drive time may be defined as the time from when the current value increases.

Next, the control device 54 controls the flow rate (L /min) (flow rate estimation step). FIG. 6 is a graph showing the relationship between the drive time of the pump device and the flow rate. The tank volume from the water stop level WL0 in the wash water tank 20 to the water level WL2 at which the pump device 22 idles can be calculated in advance based on design information. Therefore, the flow rates Q1 and Q2 (L/min) corresponding to the driving times t1 and t2 of the pump device 22 can be calculated. Note that when the float switch 52 changes from ON to OFF, the starting point of the drive time may be set as the tank capacity from the specified upper water level WL1 to the time until the pump device 22 idles.

In addition, in this embodiment, although the drive time acquisition step and the flow rate estimation step are performed once, the drive time acquisition step and the flow rate estimation step may be performed multiple times. If the drive time acquisition step and flow rate estimation step are performed multiple times, an average value may be used as the flow rate. Further, it is not necessarily necessary to perform both the drive time acquisition step and the flow rate estimation step multiple times, and only the drive time acquisition step may be performed multiple times.

Next, based on the flow rates Q1 and Q2 estimated in this way, the rotation speed of the pump device 22 is estimated so that the flow rate of the cleaning water flowing through the flow path becomes a predetermined flow rate Q (L/min) (rotation speed estimation step). FIGS. 7A and 7B are for explaining a method of estimating the rotation speed of the pump device such that the flow rate of cleaning water flowing through the flow path becomes a predetermined flow rate Q (L/min) based on the estimated flow rate. It is a graph. Note that FIG. 7A shows a case where the estimated flow rate is Q1, and FIG. 7B shows a case where the estimated flow rate is Q2.

The control device 54 stores a performance curve showing the pump performance showing the relationship between the flow rate and the head when the pump rotation speed is R. When the flow rate is Q1 estimated in the above flow estimation step, as shown in FIG. 7A, a performance curve showing the relationship between the flow rate and the head when the pump rotation speed is R and the pressure loss This will intersect the resistance curve that shows the relationship between flow rate and head. Therefore, it can be estimated that the pressure loss in the flow path is Cv1. In the case shown in FIG. 7A, the estimated flow rate Q1 is larger than the target planned water amount Q. For this reason, as shown in FIG. 7A, a performance curve showing the relationship between the flow rate and head corresponding to the rotational speed of the pump is determined, which intersects the resistance curve showing the pressure loss Cv1 at the flow rate Q. Then, the pump rotation speed R1 corresponding to this performance curve is stored as the adjusted rotation speed.

If the flow rate Q2 is the one estimated in the above flow rate estimation step, as shown in FIG. This will intersect the resistance curve that shows the relationship between flow rate and head. Therefore, it can be estimated that the pressure loss in the flow path is Cv2. In the case shown in FIG. 7B, the estimated flow rate Q2 is smaller than the target planned water volume Q. Therefore, as shown in FIG. 7B, a performance curve showing the relationship between the flow rate and head corresponding to the rotational speed of the pump is determined, which intersects the resistance curve showing the pressure loss Cv2 at the flow rate Q. Then, the pump rotation speed R2 corresponding to this performance curve is stored as the adjusted rotation speed.

As described above, the rotation speed of the pump is estimated using the flow rate estimation mode. Note that while the control device 54 is performing the above-described flow rate estimation mode, the notification device 56 displays that the flow rate estimation mode is being executed.

Next, the toilet bowl cleaning mode will be explained. The toilet bowl cleaning mode is a mode in which normal large flushing or small flushing is performed. When the control device 54 receives an input for large flush or small flush from the user to the operation unit 55 while the toilet bowl flush mode is set, the control device 54 adjusts the rotation speed to achieve the above-mentioned planned water amount Q. to drive the pump device 22. Then, the control device 54 drives the pump device 22 for a preset time for large cleaning or small cleaning. The time corresponding to the large flush or the small flush is determined by the amount of water (L) appropriate for the large flush or the small flush when the pump device 22 supplies flush water from the flush water tank 6 to the toilet main body 2 at the scheduled flow rate Q. It is set as a time that flows. Thereby, jet water is discharged from the jet water spout 16 by the pump device 22 . Further, in parallel with jet water spouting, the control device 54 opens the electromagnetic on-off valve 34 and switches the water supply channel switching valve 36 to a state where the water supply channel 24 communicates with the rim water spout 18 to perform rim water spouting.

After cleaning the toilet main body 2 in this manner, the control device 54 switches the water supply channel switching valve 36 to a state where the water supply channel 24 communicates with the flush water tank 6, and supplies water to the flush water tank 6. . When the water supply to the wash water tank 6 progresses and the water level in the wash water tank 6 reaches the upper specified water level WL1, the float switch 52 detects this, and a detection signal is sent from the float switch 52 to the control device 54. . After receiving the detection signal, the control device 54 continues water supply for a predetermined period of time, and then closes the electromagnetic on-off valve 34. As a result, the water level in the wash water tank 6 reaches the water stop level WL0. While the toilet main body 2 is being cleaned in the toilet cleaning mode, the control device 54 causes the notification device 56 to display that the toilet cleaning mode is being executed. Note that the notification device 56 does not necessarily need to display the information in both the flow rate estimation mode and the toilet flushing mode, but it is preferable to display it in the flow rate estimation mode.

According to this embodiment, the following effects are achieved.
In the present embodiment, the control device 54 drives the pump device at a predetermined rotation speed, estimates the flow rate of flushing water supplied to the toilet main body 2, and based on the estimated flow rate of flushing water, the controller 54 drives the pump device at a predetermined rotation speed. A flow rate estimation mode that estimates the adjusted rotation speed of the pump device 22 to supply a scheduled flow rate, and a toilet that drives the pump device 22 at the adjusted rotation speed estimated in the flow rate estimation mode to supply flush water to the toilet bowl body. Cleaning mode and can be executed. According to such a configuration, the adjusted rotational speed of the pump device 22 that supplies a scheduled flow rate is estimated in the flow rate estimation mode, and the pump device 22 is driven at the adjusted rotational speed in the toilet flushing mode. Even if the pressure loss in the flow path differs from toilet to toilet due to errors, a predetermined amount of flushing water can be supplied to the toilet.

Further, in the present embodiment, the control device 54 drives the pump device 22 at a predetermined rotation speed in the flow rate estimation mode, so that the water level in the wash water tank changes from the water stop level WL0 to the point where air enters the pump device 22. a driving time acquisition step of acquiring the driving time until the water level drops to a water level of Based on this, a flow rate estimation step of estimating the flow rate of flushing water supplied to the toilet main body 2 by the pump device 22 is executed. In this way, the flow rate of the wash water is estimated based on the driving time until the water level drops to a level that allows air to enter the pump device 22, so the flow rate of the wash water is estimated without providing a float switch to detect the lower water level. The flow rate can be estimated.

Further, in the present embodiment, the control device 54 can detect the current value of the pump device 22, and in the driving time acquisition step, the control device 54 detects the current value of the pump device 22 based on the current value of the pump device 22. It is detected that the water level has fallen to such a level that air enters the pump device 22. Since the current value of the pump device changes when air enters the pump device, it is possible to easily and accurately detect that the water level in the wash water tank has fallen to a level at which air enters the pump device 22.

Furthermore, in the present embodiment, the control device 54 executes the driving time acquisition step multiple times, so that it is possible to estimate the driving time more accurately and supply a predetermined amount of flushing water to the toilet main body 2 more accurately. Can be done.

Furthermore, in this embodiment, since the control device 54 notifies the user of execution of the flow rate estimation mode and the toilet bowl cleaning mode using the notification device 56, the user can decide which of the flow rate estimation mode and the toilet bowl cleaning mode is being executed. This makes it possible to prevent the flow rate estimation mode from being interrupted midway or from unexpectedly implementing the flow rate estimation mode.

1 Flush toilet device 2 Toilet main body 4 Water supply device 6 Cleaning water tank 8 Drain pipe 12 Bowl part 14 Drain trap pipe 14a Inlet part 14b Trap rising pipe 14c Trap descending pipe 14d Top part 16 Jet spout 18 Rim spout 20 Wash water Tank 22 Pump device 24 Water supply channel 34 Electromagnetic on-off valve 36 Water supply channel switching valve 38 Rim side water supply channel 40 Tank side water supply channel 45 Water pipe 45a Water intake section 46 Jet side water supply channel 52 Float switch 54 Control device 55 Operation section 56 Notification device 62 Float part 64 Stem

Claims (5)

A flush toilet device that can be flushed with flush water,
The toilet bowl body,
a wash water tank that stores wash water for washing the toilet bowl body;
a pump device that supplies the wash water in the wash water tank to the toilet main body;
A control device that controls the pump device,
The control device includes:
The pump device is driven at a predetermined rotation speed, estimates the flow rate of flush water supplied to the toilet main body, and supplies a scheduled flow rate based on the estimated flow rate of flush water. A flow rate estimation mode that estimates the adjusted rotation speed of the pump device;
A flush toilet capable of executing a toilet cleaning mode in which the pump device is driven at the adjusted rotation speed estimated in the flow rate estimation mode to supply the flush water to the toilet main body. Device. The control device, in the flow rate estimation mode,
Obtaining driving time for driving the pump device at the predetermined rotation speed and obtaining the driving time until the water level in the wash water tank falls from a predetermined water level to a water level at which air enters the pump device. step and
The amount of flushing water supplied to the toilet bowl body by the pumping device is based on the driving time and the volume of the portion from the predetermined water level in the flushing water tank to the water level at which air enters the pumping device. The flush toilet device according to claim 1, wherein the flush toilet device performs at least a flow rate estimation step of estimating a flow rate. The control device is capable of detecting a current value of the pump device,
2. In the drive time acquisition step, the control device detects, based on the current value of the pump device, that the water level in the wash water tank has fallen to a level at which air enters the pump device. 2. The flush toilet device according to 2. The flush toilet device according to claim 2 or 3, wherein the control device executes the driving time acquisition step multiple times. The flush toilet device according to any one of claims 1 to 4, wherein the control device notifies the user of execution of the flow rate estimation mode and/or the toilet flushing mode using a notification device.

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