JP2021075886A - Washing water tank device, and water closet equipment including the same - Google Patents

Abstract

To provide a washing water tank device capable of suppressing the flooding of a power generation part of an electric generator due to the splash of washing water when the washing water flowing out of an atmosphere introduction port into a water storage tank during opening a valve element of a vacuum breaker lands on a landing position in the water storage tank, and provide water closet equipment including the same.SOLUTION: A washing water tank device 4 includes a drain valve device 18 including a drain valve 18a for opening/closing a drain port 16a of a water storage tank 16, an electric generator 22 including a power generation part 22b for converting the rotating motion of a water turbine 22a which is rotated by a water flow into electric power, and a water supply control device 12 including a solenoid valve 14 to be operated by the electric power generated by the electric generator, the water supply control device including a vacuum breaker 32, the electric generator being arranged on the opposite side to a landing position Q2 where washing water W2 flowing out of the atmosphere introduction port of the vacuum breaker lands in the water storage tank, across an outline part 18b of the drain valve device.SELECTED DRAWING: Figure 2

Description

The present invention relates to a flush water tank device and a flush toilet device provided with the same, and in particular, a flush water tank device that supplies flush water to a flush toilet using the power generated by itself, and a flush toilet device thereof. Regarding the flush toilet device provided.

Conventionally, as a washing water tank device that supplies washing water to a washing toilet using the electric power generated by itself, for example, as described in Patent Document 1, power is generated by tank water supply and used for water supply. Those equipped with a generator that supplies electric power to an electromagnetic valve are known.
In such a conventional washing water tank device, a solenoid valve to which a water supply pipe is connected is installed on the upper side surface on one of the left and right sides of the water storage tank. A turbine is connected to the outflow side of the solenoid valve, and the outlet of the turbine serves as a tank water supply port that opens downward.
Further, the generator is attached to a turbine, which is rotationally driven to generate electricity.
A circuit board is installed on the upper surface side of the solenoid valve. This circuit board is provided with a rectifier circuit that converts AC power from a generator into DC, a battery that is charged by a DC current from this rectifier circuit, and an electromagnetic valve control circuit that operates with the power from this battery. ing.
Next, as a conventional washing water tank device, for example, as described in Patent Document 2, a water supply device for supplying washing water into a water storage tank is provided with a negative pressure breaking valve (vacuum breaker). Is also known. When installing a generator in a wash water tank device, it is assumed that the generator will also be applied to a wash water tank device provided with such a negative pressure breaker (vacuum breaker).
In addition, the negative pressure breaker (vacuum breaker) includes a water passage, an air inlet, and a valve body that opens and closes the air inlet, and the valve body closes the air inlet when water is passed through the water passage. At the time of non-water flow, the valve body opens the air inlet to communicate the water passage and the atmosphere.

Japanese Unexamined Patent Publication No. 10-311073 Japanese Unexamined Patent Publication No. 2013-204389

However, in the conventional washing water tank device described in Patent Document 1 described above, when the washing water discharged from the tank water supply port lands on the water surface in the water storage tank, the scattered washing water is generated by the generator. There is a risk that the power generation unit (electronic parts, circuit board, etc.) will be exposed to water.
Further, when a generator is adopted for the conventional washing water tank device provided with the vacuum breaker described in Patent Document 2 described above, when the valve body of the vacuum breaker opens the atmosphere introduction port, The wash water in the water passage of the vacuum breaker flows out from the air inlet into the water storage tank. Then, the washing water that has landed in the water storage tank is scattered around, so that the generator may be flooded.
In particular, in recent years, in order to improve and diversify the design of flush toilets, the height of the upper end of the entire flush toilet is designed to be as low as possible, so-called "low silhouette" and "small size" of the flush water tank device. The space inside the water storage tank will be reduced accordingly.
As a result, as the space in the water storage tank becomes narrower, there is a problem that the washing water after landing on the water surface in the water storage tank is more likely to be scattered on the generator.
Therefore, when the wash water that has flowed out from the air inlet into the water storage tank when the valve body of the vacuum breaker is opened, when it reaches the landing position in the water storage tank, how is the water covered by the generator due to the scattering of the wash water? Suppression has become one of the important issues that have been requested in recent years.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art and the problems requested in recent years, and the cleaning that has flowed out from the air inlet to the water storage tank when the valve body of the vacuum breaker is opened. To provide a washing water tank device capable of suppressing water damage to a generator due to scattering of the washing water when water hits a landing position in a water storage tank, and a washing toilet device equipped with the washing water tank device. I am aiming.

In order to solve the above-mentioned problems, the present invention is a washing water tank device that supplies washing water to a water-washing stool by using the electric power generated by itself, and provides the washing water to be supplied to the water-washing stool. A water storage tank in which a drain port is formed for storing the stored wash water and discharging the stored wash water to the water wash toilet, and a drain valve that opens and closes the drain port to supply and stop the wash water to the water wash toilet. A drain valve device including a pull-up portion that holds the drain valve so as to be movable up and down and allows the drain valve to be pulled up above the water stop water level in the water storage tank, and a supply. It is equipped with a generator equipped with a water wheel that is rotated by the flow of tap water, a power generation unit that converts the rotational motion of the water wheel into electric power, and an electromagnetic valve that is operated by the electric power generated by this generator. It has a water supply control device that controls water supply and water stoppage to the water storage tank based on the operation of an electromagnetic valve, and the water supply control device is an air inlet that connects the water passage and the water passage to the outside. It is provided with a vacuum breaker including a valve body which is provided in the water passage and closes the air inlet when water is flowing, and which communicates the water passage and the air inlet when water is not flowing. The generator is arranged above the water stoppage level in the water storage tank, and the wash water flowing out from the air inlet of the vacuum breaker lands in the water storage tank in the left-right direction in a plan view. It is characterized in that it is arranged on the opposite side of the outer shell portion of the drain valve device with respect to the water landing position.
In the present invention configured as described above, in addition to being able to dispose the generator above the water stoppage level in the water storage tank, the vacuum breaker's atmospheric inlet in the left-right direction in the plan view. It was possible to place the flush water flowing out of the drain valve device on the opposite side of the water landing position where it landed in the water storage tank.
As a result, after the wash water that has flowed out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, the scattered wash water is blocked by the outer part of the drain valve device, so that the generator is flooded. Can be suppressed.

In the present invention, preferably, the generator is a region different from the landing position in the left side region, the central region, and the right side region divided into three equal parts in the left-right direction in the water storage tank in a plan view. It is located inside.
In the present invention configured as described above, the generator differs with respect to the landing position in the left side region, the central region, and the right side region divided into three equal parts in the left-right direction in the water storage tank in a plan view. I was able to place it in the area.
As a result, it is possible to secure a relatively large distance between the landing position and the generator at least in the same plane.
Therefore, after the wash water flowing out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, it is possible to effectively suppress the water exposure of the generator by the scattered wash water.

In the present invention, preferably, the water landing position is located in either the left side region or the right side region in the water storage tank in a plan view, and the generator is in the water storage tank in a plan view. It is arranged in either the left side area or the right side area in the above.
In the present invention configured as described above, the landing position in the water storage tank due to the wash water flowing out from the air inlet of the vacuum breaker is located in either the left side region or the right side region in the water storage tank in a plan view. In contrast, the generator could be located in either the left or right region of the water storage tank in plan view.
As a result, it is possible to secure a relatively large distance between the landing position in the water storage tank and the generator at least in the same plane.
Therefore, after the wash water flowing out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, it is possible to more effectively suppress the water exposure of the generator by the scattered wash water.

In the present invention, preferably, the generator is arranged on the opposite side of the water landing position with the outer shell portion of the drain valve device in the front-rear direction.
In the present invention configured in this way, the outer part of the drain valve device is sandwiched in the front-rear direction with respect to the landing position in the water storage tank by the washing water flowing out from the air inlet of the vacuum breaker. I was able to place it on the other side.
As a result, after the wash water that has flowed out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, the scattered wash water is blocked by the outer part of the drain valve device, so that the generator is flooded. Can be effectively suppressed.

In the present invention, preferably, the drain valve device further includes a hydraulic drive unit that drives the drain valve so as to be vertically movable by utilizing the supply pressure of tap water supplied, and the hydraulic drive unit is provided. , It is provided in the pull-up portion above the outer shell portion.
In the present invention configured as described above, a hydraulic drive unit that drives the drain valve so as to be vertically movable by using the supply pressure of the supplied tap water can be provided in the upper pull-up portion of the drain valve device. It was.
As a result, after the wash water that has flowed out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, the scattered wash water is blocked by the outer shell of the drain valve device, the hydraulic drive, etc. The water exposure of the generator can be suppressed more effectively.

In the present invention, preferably, the flow path on the downstream side of the vacuum breaker is provided with a gradient, and the water turbine of the generator is arranged at the lowest position of the flow path.
In the present invention configured as described above, a gradient can be provided in the flow path on the downstream side of the vacuum breaker, and the water turbine of the generator can be arranged at the lowest position of this flow path.
As a result, it is possible to prevent water from escaping from the inside of the generator (water turbine, etc.) after power generation, so it is possible to suppress the generation of scale and the adhesion of water stains due to the water bleeding inside the generator other than the power generation unit. Can be done.

The present invention is a flush toilet device, characterized in that it includes the flush water tank device and the flush toilet device that is washed with the wash water supplied from the flush water tank device.
In the present invention configured in this way, after the wash water flowing out from the air inlet of the vacuum breaker has landed at the landing position in the water storage tank, the scattered wash water is blocked by the outer shell of the drain valve device. Therefore, it is possible to suppress the water landing of the generator.

According to the washing water tank device of the present invention and the water washing toilet device provided with the washing water tank device, the washing water flowing out from the air inlet to the water storage tank when the valve body of the vacuum breaker is opened is the landing position in the water storage tank. When it lands on the water, it is possible to prevent the generator from being inundated due to the scattering of the washing water.

It is a perspective view which shows the whole flush toilet device provided with the washing water tank device by one Embodiment of this invention. It is a front sectional view which shows the schematic structure of the washing water tank device by one Embodiment of this invention. It is a top sectional view which shows the schematic structure of the washing water tank device by one Embodiment of this invention.

Hereinafter, a flush toilet device including a washing water tank device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 is a perspective view showing the entire flush toilet device including the flush water tank device according to the embodiment of the present invention. Further, FIG. 2 is a front sectional view showing a schematic configuration of a washing water tank device according to an embodiment of the present invention. Further, FIG. 3 is a plan sectional view showing a schematic configuration of a washing water tank device according to an embodiment of the present invention.

First, as shown in FIG. 1, the flush toilet device 1 according to the embodiment of the present invention is a flush toilet main body 2 which is a flush toilet, and an embodiment of the present invention mounted on the rear portion of the flush toilet main body 2. It is composed of a washing water tank device 4 according to a form.
Next, as shown in FIGS. 1 to 3, the flush toilet device 1 of the present embodiment includes a remote controller 6, a motion sensor 8, and a controller 10.
For example, when the remote control device 6 mounted on the wall surface is operated after using the toilet bowl, the operation signal is transmitted to the controller 10.
Further, when the motion sensor 8 provided on the rear side of the toilet seat 2b of the flush toilet body 2 detects the user's leaving, the detection signal is transmitted to the controller 10.
Then, based on these detection signals, the controller 10 controls the operation of the electromagnetic valve 14 of the water supply control device 12 in the washing water tank device 4, which will be described in detail later, to the water storage tank 16 of the washing water tank device 4. It is designed to control the water supply and stoppage (water supply and water stoppage).
In the present embodiment, the mode in which the motion sensor 8 is provided on the toilet seat 2b will be described, but the present invention is not limited to such a form, and the user can sit, leave or approach, leave, or hold his / her hand. It may be provided at a position where it can be detected, and may be provided, for example, in a part of the flush toilet body 2 or the washing water tank device 4.
Further, the motion sensor 8 may be any as long as it can detect the user's sitting, leaving, approaching, leaving, and holding a hand. For example, an infrared sensor or a microwave sensor is adopted as the motion sensor 8. May be good.

Next, as shown in FIGS. 2 and 3, the washing water tank device 4 has a water storage tank 16 for storing wash water to be supplied to the flush toilet body 2, and a drain port provided at the bottom of the water storage tank 16. A drain valve device 18 including a drain valve 18a for opening and closing the 16a is provided.
Further, the drain valve device 18 holds the drain valve 18a so as to be vertically movable and includes an outer shell portion 18b. The outer shell portion 18b includes a pulling portion (detailed later, a drain valve hydraulic pressure driving portion 20) which is provided above the water stop water level WL0 of the water storage tank 16 and drives the drain valve 18a so as to be pulled up.
Further, the drain valve 18a is a valve body arranged so as to open and close the drain port 16a. When the drain valve 18a is opened by being pulled upward by the drain valve hydraulic drive unit 20, the washing water in the water storage tank 16 is discharged from the drain port 16a to the flush toilet body 2, and the bowl part 2a is washed. It has become so.

Next, as shown in FIGS. 2 and 3, a water supply control device 12 and a generator 22 are provided inside the water storage tank 16 of the washing water tank device 4, respectively.
The water supply control device 12 includes a solenoid valve 14. The solenoid valve 14 is operated by the electric power generated by the generator 22, and the water supply / stoppage into the drain valve hydraulic drive unit 20 and the water storage tank 16 is controlled.
The water supply control device 12 includes a solenoid valve 14, which is operated by the electric power generated by the generator 22.
The details of the water supply control device 12 and the generator 22 will be described later.
Further, details of the arrangement relationship between the generator 22 and the drain valve device 18 in the water storage tank 16 will be described later.

Next, as shown in FIGS. 2 and 3, an overflow pipe 24 is connected to the downstream side of the drain port 16a in the water storage tank 16.
The overflow pipe 24 rises vertically from the vicinity of the drain port 16a and extends above the surface of the wash water (water stop water level WL0) stored in the water storage tank 16.
As a result, the wash water flowing in from the overflow port 24a formed at the upper end of the overflow pipe 24 bypasses the drain port 16a and directly flows out to the flush toilet body 2. The details of the arrangement relationship between the generator 22 and the overflow pipe 24 in the water storage tank 16 will also be described later.

Next, as shown in FIG. 2, the drain valve hydraulic drive unit 20 is also a pull-up unit provided above the outer shell portion 18b of the drain valve device 18 and pulls up the drain valve 18a, and is also a pull-up unit for pulling up the drain valve 18a, and the washing water supplied from the water supply. The drain valve 18a can be driven and pulled up by using the water supply pressure.
Specifically, the drain valve hydraulic drive unit 20 is provided from a cylinder 20a into which water supplied from the water supply control device 12 flows, a piston 20b slidably arranged in the cylinder 20a, and a lower end of the cylinder 20a. It includes a rod 26 that projects to drive the drain valve 18a.
A spring 20c is arranged inside the cylinder 20a, and the spring 20c urges the piston 20b downward.
Further, a packing 20d is attached to the piston 20b to ensure watertightness between the inner wall surface of the cylinder 20a and the piston 20b.
A clutch mechanism 28 is provided in the middle of the rod 26. By this clutch 28, the upper rod 26a and the lower rod 26b of the rod 26 are connected to each other so as to be disconnectable.

Next, as shown in FIG. 2, the cylinder 20a of the drain valve hydraulic drive unit 20 is a member having a substantially cylindrical shape, and its axis is arranged in the vertical direction. As a result, the piston 20b is slidably housed inside the cylinder 20a in the vertical direction.
Further, an inflow pipe 30 extending downstream from the water supply control device 12 is connected to the lower end of the cylinder 20a.
Further, the water supply control device 12 includes a vacuum breaker 32 (details will be described later) provided on the upstream side of the inflow pipe 30. As a result, the water flowing out of the water supply control device 12 flows into the cylinder 20a from the inflow pipe 30 via the vacuum breaker 32.
Further, the piston 20b in the cylinder 20a is pushed up against the urging force of the spring 20c by the water flowing into the cylinder 20a.

On the other hand, as shown in FIG. 2, the outflow pipe 34 is connected to the upper end portion or the upper lateral portion of the cylinder 20a. Further, a water turbine 22a of the generator 22 is provided in the middle of the outflow pipe 34.
As a result, when water flows into the cylinder 20a from the inflow pipe 30, the piston 20b is pushed upward from the lower part of the cylinder 20a at the lowest position P1.
Then, when the piston 20b is pushed up to the highest position P2 above the inlet 34a of the outflow pipe 34, the water flowing into the cylinder 20a flows out to the outflow pipe 34, and the water turbine 22a of the generator 22 in the middle of the outflow pipe 34. It is designed to pass through.
Further, the washing water in the outflow pipe 34 that has passed through the water turbine 22a of the generator 22 flows out into the water storage tank 16 from the outlet (tank water supply port 34b) of the outflow pipe 34 and is stored in the water storage tank 16. It has become.
That is, the inflow pipe 30 and the outflow pipe 34 are communicated with each other via the inside of the cylinder 20a when the piston 20b rises to the highest position P2.

Next, as shown in FIG. 2, the upper rod 26a is a rod-shaped member connected to the lower surface of the piston 20b, passes through a through hole 20e formed in the bottom surface of the cylinder 20a, and descends from the inside of the cylinder 20a. It extends so as to protrude to.
A drain valve 18a is connected to the lower end of the lower rod 26b.
The piston 20b and the drain valve 18a are detachably connected to each other by the upper rod 26a and the lower rod 26b.
Further, when water flows into the cylinder 20a and the piston 20b is pushed up, the upper rod 26a connected to the piston 20b lifts the drain valve 18a upward via the lower rod 26b so that the drain valve 18a opens. It has become.

Further, as shown in FIG. 2, a gap 20f is provided between the upper rod 26a and the through hole 20e of the cylinder 20a. A part of the water that has flowed into the cylinder 20a flows out from this gap 20f. Further, the water flowing out from the gap 20f flows into the water storage tank 16.
Here, since the gap 20f is relatively narrow and the flow path resistance is large, even if water flows out from the gap 20f, the pressure in the cylinder 20a rises due to the water flowing into the cylinder 20a from the inflow pipe 30. The piston 20b is pushed up against the urging force of the spring 20c.

Further, when the rod 26 (drainage valve 18a) is lifted by a predetermined distance, the clutch mechanism 28 releases the connection between the upper rod 26a and the lower rod 26b so that they are separated from each other.
Further, in a state where the upper rod 26a and the lower rod 26b are separated by the clutch mechanism 28, the lower rod 26b is not interlocked with the movement of the upper part of the piston 20b and the upper rod 26a, and resists buoyancy together with the drain valve 18a. Is also designed to descend due to gravity.

Next, as shown in FIG. 2, a drain valve float mechanism 36 is provided in the vicinity of the drain valve 18a.
In this drain valve float mechanism 36, after the rod 26 is lifted by a predetermined distance and the lower rod 26b is disconnected by the clutch mechanism 28, the lower rod 26b and the drain valve 18a are lowered to close the drain port 16a. It is designed to be delayed.
Specifically, the drain valve float mechanism 36 has a float portion 36a and an engaging portion 36b interlocked with the float portion 36a.

Further, as shown in FIG. 2, the engaging portion 36b is adapted to engage with a part (projection 26c, etc.) of the lower rod 26b that has been disengaged by the clutch mechanism 28 and lowered.
As a result, the lower rod 26b and the drain valve 18a are lowered to prevent the lower rod 26b and the drain valve 18a from being seated at the drain port 16a.
Further, the float portion 36a is lowered as the water level in the water storage tank 16 is lowered, and when the water level in the water storage tank 16 is lowered to a predetermined water level, the float portion 36a rotates the engaging portion 36b to rotate the engaging portion 36b and the lower portion. The rod 26b is disengaged from the protrusion 26c.
By such disengagement, the lower rod 26b and the drain valve 18a are lowered and seated at the drain port 16a. As a result, the closing of the drain valve 18a is delayed, and an appropriate amount of washing water is discharged from the drain port 16a.

Next, as shown in FIG. 2, the generator 22 includes a water turbine 22a that is rotated by a stream of tap water supplied, and a power generation unit 22b that converts the rotational motion of the water turbine 22a into electric power.
The water turbine 22a is provided in the middle of the outflow pipe 34 that connects the water supply control device 12 and the drain valve hydraulic drive unit 20. The water turbine 22a is rotated by a water flow that flows out of the water supply control device 12, passes through the drain valve hydraulic drive unit 20, and flows in the outflow pipe 34.
Further, the power generation unit 22b includes electronic components having low water resistance, a circuit board, and the like (not shown), and is connected to the controller 10.
Further, the controller 10 has a built-in circuit board and a capacitor (not shown above). This circuit board is provided with a rectifier circuit that converts AC power from the generator 22 into DC, the capacitor is charged by the DC current from the rectifier circuit, and the electromagnetic power provided on the circuit board is generated by the power from the capacitor. The valve control circuit is activated.
As a result, when the electric power generated by the generator 22 is sent to the controller 10, a capacitor (not shown) built in the controller 10 is charged.
The electric power generated and stored by one cleaning of the water-washing toilet body 2 is larger than the electric power consumed to operate the electromagnetic valve 14 in one cleaning, and the electric power used for cleaning is used as a generator. It can be covered by 22 generated power.
As a result, the washing water tank device 4 of the present embodiment can supply the washing water to the flush toilet body 2 by using the electric power generated by itself.

Next, as shown in FIG. 2, the water supply control device 12 is connected between the water supply pipe 38 connected to the water supply and the inflow pipe 30 connected to the drain valve hydraulic drive unit 20.
As a result, the water W0 supplied from the water supply to the water supply pipe 38 has a constant flow rate arranged in the water stopcock 38a arranged on the outside of the water storage tank 16 and the water storage tank 16 on the downstream side of the water stopcock 38a. It is supplied to the water supply control device 12 via the valve 38b.
The water stop valve 38a is provided to stop the supply of water to the washing water tank device 4 at the time of maintenance or the like, and is usually used in an opened state.
The constant flow valve 38b is provided to allow water supplied from the tap water to flow into the water supply control device 12 at a predetermined flow rate, and a constant flow rate of water is supplied to the water supply control device 12 regardless of the installation environment of the flush toilet device 1. It is supposed to be supplied to.

Next, the water supply control device 12 operates the solenoid valve 14 based on the instruction signal from the controller 10 for the water W0 supplied from the water supply pipe 38, and controls the supply and stop of the water W0 to the inflow pipe 30. ing.
Further, the water supply control device 12 controls the water supply from the inflow pipe 30 to the drain valve hydraulic pressure drive unit 20 based on the operation of the solenoid valve 14, and also controls the water supply tank of the washing water W1 from the tank water supply port 34b of the outflow pipe 34. It is designed to control the water supply and stoppage to 16.
Here, as shown in FIG. 2, the vacuum breaker 32 is provided in the inflow pipe 30 between the water supply control device 12 and the drain valve device 18.
The vacuum breaker 32 includes an atmosphere introduction port 32b that communicates the water passage 32a (the flow path in the inflow pipe 30) with the outside, and a valve body 32c that opens and closes the atmosphere introduction port 32b by moving up and down. ing.
Further, when the valve body 32c passes through the water passage 32a, the valve body 32c is pushed up by the water pressure in the water passage 32a and rises to close the atmosphere introduction port 32b.
On the other hand, the valve body 32c opens the air inlet 32b by descending when the water passage 32a is not passing water, so that the water passage 32a and the atmosphere outside the atmosphere introduction port 32b communicate with each other.
With such a vacuum breaker 32, when the water supply control device 12 side becomes negative pressure, the outside air is sucked into the inflow pipe 30 and the backflow of water from the drain valve hydraulic drive unit 20 side is prevented. ing.

Here, in the present embodiment, immediately after the solenoid valve 14 of the water supply control device 12 is opened, the washing water flowing into the inflow pipe 30 from the water supply pipe 38 passes through the water passage 32a of the vacuum breaker 32. The valve body 32c of the vacuum breaker 32 rises to close the air inlet 32b.
Further, until the valve body 32c of the vacuum breaker 32 closes the air introduction port 32b, a part of the washing water (washing water W2) in the water passage 32a of the vacuum breaker 32 enters the water storage tank 16 from the atmosphere introduction port 32b. It is supposed to leak to.
Here, of the water amount V0 [L] of the water W0 supplied from the water supply pipe 38 to the water supply control device 12, the amount of water V2 [L] of the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 into the water storage tank 16. ] Is smaller than the amount V1 [L] of the washing water W1 supplied from the tank water supply port 34b of the outflow pipe 34 into the water storage tank 16.
That is, most of the water flowing out from the water supply control device 12 is supplied from the inflow pipe 30 to the drain valve hydraulic pressure drive unit 20.
Further, a part of the water supplied to the drain valve hydraulic drive unit 20 flows out from the gap 20f between the inner wall of the through hole 20e of the cylinder 20a and the rod 26 and flows into the water storage tank 16.
Further, most of the water supplied to the drain valve hydraulic drive unit 20 is used for power generation by flowing out from the cylinder 20a to the outflow pipe 34 and then passing through the generator 22, and is used for power generation from the tank water supply port 34b to the water storage tank 16. Water is supplied inside.

On the other hand, the water supply valve float 40 is connected to the water supply control device 12.
The water supply valve float 40 is arranged in the water storage tank 16, and rises as the water level of the water storage tank 16 rises. When the water level rises to a predetermined water level (for example, the water stop water level WL0), the water supply control device 12 drains water. The water supply to the valve hydraulic drive unit 20 is stopped.

Next, as shown in FIG. 2, the water supply control device 12 includes a main body 42 to which the water supply pipe 38 and the inflow pipe 30 are connected, a main valve body 44 arranged in the main body 42, and the main body portion 44 thereof. The valve seat 46 on which the valve body 44 is seated, the float-side pilot valve 48 that is moved by the vertical movement of the water supply valve float 40, and the solenoid valve-side pilot valve 50 provided so as to face the valve seat 46 in the main body 42. And have.
Further, the main valve body 44 is a generally disk-shaped diaphragm type valve body. Further, in the main body 42, a pressure chamber 42a is formed on the opposite side of the valve seat 46 with respect to the main valve body 44.
Further, the pressure chamber 42a is defined by the inner wall surface of the main body 42 and the main valve body 44. When the pressure in the pressure chamber 42a becomes high, the main valve body 44 is pressed against the valve seat 46 by this pressure and is seated on the valve seat 46.

Next, the pressure chamber 42a provided in the main body 42 is provided with a float side pilot valve port (not shown) and a solenoid valve side pilot valve port (not shown), respectively. (Not shown) is opened and closed by each of the float side pilot valve 48 and the solenoid valve side pilot valve 50.
Since the structure of the solenoid valve 14 of the water supply control device 12 is a well-known technique, a specific description thereof will be omitted, but a solenoid coil (not shown) for generating a driving force and this solenoid coil (not shown). A plunger (not shown) driven by a plunger (not shown), a solenoid valve side pilot valve (not shown) attached to this plunger (not shown), and a solenoid valve side pilot valve (not shown) when the valve is closed. A coil spring (not shown) or the like for pressing the main valve body 44 (not shown) is provided.
Further, the solenoid valve side pilot valve 50 is moved forward and backward in the pressure chamber 42a of the main body 42 by the operation of the solenoid valve 14.
In a normal state, the solenoid valve side pilot valve 50 is closed by an urging force such as a coil spring (not shown).
On the other hand, when the solenoid coil (not shown) of the solenoid valve 14 is energized, the solenoid valve side pilot valve 50 is generated by the electromagnetic force acting between the solenoid coil (not shown) and the plunger (not shown). Is designed to open.

Next, with reference to FIGS. 2 and 3, details of the arrangement relationship between the drain valve device 18, the overflow pipe 24, and the vacuum breaker 32 in the water storage tank 16 and the generator 22 will be described.
First, as shown in FIGS. 2 and 3, the water storage tank 16 has a substantially horizontally long rectangular parallelepiped shape when viewed from the front side, and has a maximum dimension (width dimension X1) in the left-right direction when viewed from the front side of the water storage tank 16. ) Is larger than the maximum dimension (depth dimension Y1) in the front-rear direction (X1> Y1).
Further, as shown in FIGS. 2 and 3, in the internal region of the water storage tank 16, the three regions divided into three equal parts in the left-right direction when viewed from the front side of the water storage tank 16 are the “tank left side region L” and the “tank”. It is defined as "central area C" and "tank right area R", respectively.

Next, as shown in FIG. 2, the generator 22 (particularly, the power generation unit 22b) is arranged above the still water level WL0 in the water storage tank 16, and more specifically, in the water storage tank 16. It is located above the overflow port 24a located at the upper end of the overflow pipe 24 of the above.
Further, as shown in FIG. 3, the generator 22 (particularly, the power generation unit 22b) is located at a position where at least a part of the overflow port 24a overlaps with the projection surface A1 projected in the left-right direction of the water storage tank 16 in a plan view. Is located in.

Next, as shown in FIG. 3, in the generator 22 (particularly, the power generation unit 22b), the overflow port 24a is arranged in the tank left side region L, the tank center area C, and the tank right side area R in a plan view. It is arranged in the right side area R of the tank.
Here, in the present embodiment, an example in which the area where the overflow port 24a is arranged (hereinafter, “the area where the overflow port is arranged”) is the tank right side area R will be described.
However, when the overflow port 24a straddles both two regions, for example, the tank central region C and the tank right side region R in a plan view, the cross-sectional area of the overflow port 24a is large with respect to these two regions. The area is defined as the "area where the overflow port is located".

Further, as shown in FIG. 3, the generator 22 (particularly, the power generation unit 22b) is arranged at a position where at least a part of the overflow port 24a overlaps with the projection surface A2 in the front-rear direction in a plan view. ..

Further, as shown in FIGS. 2 and 3, the water landing position Q1 at which the washing water W1 discharged from the tank water supply port 34b lands in the water storage tank 16 is located in the tank left side region L.
On the other hand, the generator 22 (particularly, the power generation unit 22b) overflows and the outer surface portion 18b of the drain valve device 18 with respect to the landing position Q1 of the washing water W1 discharged from the tank water supply port 34b in a plan view. It is arranged on the opposite side of the front-rear direction and the left-right direction with the pipe 24 in between.

Next, as shown in FIGS. 2 and 3, when water is flowing through the water passage 32a of the vacuum breaker 32, the valve body 32c is pushed up by the water pressure in the water passage 32a to rise, and the air inlet 32b is closed. By then, the water in the water passage 32a flows out from the air inlet 32b into the water storage tank 16.
At this time, the water landing position Q2 at which the wash water W2 flowing out from the air introduction port 32b lands in the water storage tank 16 is located in the tank left side region L.
On the other hand, the generator 22 (particularly, the power generation unit 22b) has an outer shell portion of the drain valve device 18 with respect to the landing position Q2 of the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 in a plan view. It is arranged on the opposite side in the left-right direction with 18b in between.

Further, as shown in FIGS. 2 and 3, the generator 22 (particularly, the power generation unit 22b) has a landing position Q1 and an atmosphere introduction port of the washing water W1 discharged from the tank water supply port 34b in the tank left side region L. It is arranged in the tank right side region R different from each of the landing positions Q2 of the washing water W2 flowing out from 32b.

In the present embodiment, each of the landing position Q1 of the washing water W1 discharged from the tank water supply port 34b and the water landing position Q2 of the washing water W2 flowing out from the air introduction port 32b are located in the tank left side region L. On the other hand, the mode in which the generator 22 is arranged in the tank right side region R different from the landing position Q1 of the washing water W1 and the landing position Q2 of the washing water W2 has been described.
However, the present invention is not limited to such a form, and in short, both the landing position Q1 of the washing water W1 and the landing position Q2 of the washing water W2 are arranged in either the left side region L or the right side region R of the tank, and the generator is generated. The 22 (particularly, the power generation unit 22b) may be arranged in either the left side region L or the right side region R of the tank.

Further, as shown in FIG. 3, the generator 22 (particularly, the power generation unit 22b) receives the washing water W1 discharged from the tank water supply port 34b and the washing water W2 flowing out from the atmosphere introduction port 32b. The generator 22 (particularly, the power generation unit 22b) is arranged on the opposite side of the outer surface portion 18b of the drain valve device 18 in the front-rear direction with respect to each of the water positions Q2, that is, the generator 22 (particularly, the power generation unit 22b) has a substantially rectangular shape in a plan view. It is arranged diagonally with respect to each landing position Q1 and Q2 in the water storage tank 16.

Next, the washing water W1 supplied from the water supply control device 12 to the outflow pipe 34 via the drain valve hydraulic drive unit 20 passes through the water turbine 22a other than the power generation unit 22b in the generator 22.
Further, the tank water supply port 34b is arranged in the water storage tank 16 so that the washing water W1 in the outflow pipe 34 that has passed through the water turbine 22a of the generator 22 is landed at the water landing position Q1 in the water storage tank 16. ..

Next, as shown in FIG. 2, a gradient (gradient section G) is provided in the flow path (pipeline of the outflow pipe 34) on the downstream side of the drain valve hydraulic drive unit 20 located on the downstream side of the vacuum breaker 32. ing.
Further, the water turbine 22a of the generator 22 is arranged at the lowest position P3 of the flow path of the gradient section G of the outflow pipe 34.

Next, with reference to FIGS. 1 and 2, the operation of the washing water tank device 4 according to the embodiment of the present invention and the flush toilet device 1 provided with the washing water tank device 4 will be described.
First, as described above, in the standby state for cleaning the toilet bowl, the water level in the water storage tank 16 is at a predetermined water level (water stop water level WL0), and the solenoid valve 14 is not energized. In this state, the main valve body 44, the float side pilot valve 48, and the solenoid valve side pilot valve 50 are each closed.
Next, when the user presses the cleaning button of the remote controller 6 (FIG. 1), the remote controller 6 transmits an instruction signal for cleaning the toilet bowl to the controller 10 (FIG. 2).
In the flush toilet device 1 of the present embodiment, when a predetermined time elapses without pressing the wash button of the remote controller 6 after the user's departure is detected by the motion sensor 8 (FIG. 1). Also, a toilet bowl cleaning instruction signal is transmitted to the controller 10.

Next, when the controller 10 receives the instruction signal for cleaning the toilet bowl, the controller 10 energizes the solenoid valve 14 and opens the solenoid valve side pilot valve 50. As a result, the pressure in the pressure chamber 42a decreases, and the main valve body 44 opens.
As a result, the tap water supplied from the water supply pipe 38 to the water supply control device 12 (FIG. 2) flows out from the water supply control device 12 and flows through the vacuum breaker 32 in the inflow pipe 30.
Then, the water flowing in the inflow pipe 30 flows into the cylinder 20a of the drain valve hydraulic drive unit 20. The water flowing into the cylinder 20a pushes up the piston 20b against the urging force of the spring 20c.
As a result, the rod 26 connected to the piston 20b and the drain valve 18a connected to the rod 26 are also pulled up, and the drain valve 18a is separated from the drain port 16a.
That is, the drain valve 18a is driven by the water supply pressure of tap water supplied through the water supply pipe 38 and is opened.
Further, a part of the water flowing into the cylinder 20a from the inflow pipe 30 flows out from the gap 20f between the inner wall of the through hole 20e of the cylinder 20a and the rod 26, and this water flows into the water storage tank 16.

When the drain valve 18a is opened, the washing water (tap water) stored in the water storage tank 16 is discharged to the bowl portion 2a of the flush toilet body 2 through the drain port 16a, and the bowl portion 2a is washed. Will be done.
Further, when the washing water in the water storage tank 16 is discharged, the water level in the water storage tank 16 is lowered below the predetermined water level (water stop water level WL0), so that the water supply valve float 40 is lowered. As a result, the float side pilot valve 48 is opened.

In the state where the float side pilot valve 48 is opened, even if the main valve body 44 is closed, the pressure in the pressure chamber 42a does not increase, so that the main valve body 44 is separated from the valve seat 46. It is possible to maintain the opened state (valve open state).
Therefore, the controller 10 stops energizing the solenoid valve 14 when the water level in the water storage tank 16 drops after a lapse of a predetermined time after energizing the solenoid valve 14 to open the main valve body 44. ..
As a result, the solenoid valve side pilot valve 50 is closed, but when the water level in the water storage tank 16 is lowered, the float side pilot valve 48 is open, so that the main valve body 44 is the valve seat 46. Stay away from.
That is, the controller 10 can open the main valve body 44 for a long time only by energizing the solenoid coil (not shown) of the solenoid valve 14 for a short time, and can perform one toilet bowl cleaning with a small power consumption. Can be executed.

On the other hand, when water flows from the inflow pipe 30 into the cylinder 20a of the drain valve hydraulic drive unit 20 and the piston 20b is pushed up from the lowest position P1 to the upper part of the cylinder 20a (highest position P2), the water in the cylinder 20a flows out. It will flow out to the pipe 34.
Then, the water flowing through the outflow pipe 34 rotates the water turbine 22a of the generator 22 in the middle of the outflow pipe 34.
Further, in the generator 22, the rotational motion of the water turbine 22a is converted into electric power by the power generation unit 22b.
Further, the electric power generated by the generator 22 is charged into a capacitor (not shown) built in the controller 10.
After that, the washing water in the outflow pipe 34 that has passed through the generator 22 is supplied into the water storage tank 16 from the tank water supply port 34b.

Further, when the piston 20b is pushed up and the rod 26 and the drain valve 18a are pulled up to a predetermined position, the clutch mechanism 28 and the lower rod 26b and the drain valve 18a are separated from the upper rod 26a.
As a result, the upper rod 26a remains pushed upward together with the piston 20b, while the lower rod 26b and the drain valve 18a are lowered by their own weight.
However, the separated lower rod 26b engages with the engaging portion 36b of the drain valve float mechanism 36, and the lower rod 26b and the drain valve 18a are prevented from descending.
As a result, the drain port 16a of the water storage tank 16 remains open, and the drainage from the water storage tank 16 is continued.

Here, when the water level in the water storage tank 16 drops to a predetermined water level WL1 lower than the predetermined water level (stop water level WL0), the float portion 36a of the drain valve float mechanism 36 lowers, which moves the engaging portion 36b. ..
As a result, the engagement between the lower rod 26b and the engaging portion 36b is released, and the lower rod 26b and the drain valve 18a begin to descend again.
After that, the drain valve 18a closes the drain port 16a of the water storage tank 16 to stop the discharge of the washing water to the flush toilet body 2. Even after the drain port 16a is closed, the valve seat 46 in the water supply control device 12 is in the opened state, so that the water supplied from the water supply pipe 38 flows into the drain valve hydraulic drive unit 20. Since the water flowing out from the drain valve hydraulic drive unit 20 flows into the water storage tank 16 through the outflow pipe 34, the water level in the water storage tank 16 rises.

Next, when the water level in the water storage tank 16 rises to a predetermined water level (water stop water level WL0), the water supply valve float 40 rises and the float side pilot valve 48 closes.
As a result, the pressure in the pressure chamber 42a rises, and the main valve body 44 is seated on the valve seat 46.
As a result, the water supply from the water supply control device 12 to the drain valve hydraulic drive unit 20 and the water supply to the outflow pipe 34 on the downstream side thereof are stopped, and the power generation by the generator 22 is completed.
Further, the piston 20b of the drain valve hydraulic drive unit 20 is pushed down by the urging force of the spring 20c.
When the upper rod 26a is pushed down together with the piston 20b, the upper rod 26a and the lower rod 26b separated by the clutch mechanism 28 are reconnected.
Therefore, the next time the toilet bowl is washed, the upper rod 26a and the lower rod 26b are both pulled up by the piston 20b.
As a result, one toilet bowl cleaning is completed, and the flush toilet device 1 returns to the standby state for toilet bowl cleaning.

According to the washing water tank device 4 of the embodiment of the present invention, the generator 22 (particularly, the power generation unit 22b) could be arranged above the water stop water level WL0 in the water storage tank 16.
In addition, regarding the generator 22 (particularly, the power generation unit 22b), in the left-right direction in the plan view, the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 reaches the water landing position Q2 where the water is landed in the water storage tank 16. On the other hand, the drain valve device 18 could be arranged on the opposite side of the outer shell portion 18b.
As a result, after the wash water W2 flowing out from the atmosphere inlet 32b of the vacuum breaker 32 has landed at the landing position Q2 in the water storage tank 16, the scattered wash water is blocked by the outer shell portion 18b of the drain valve device 18. Therefore, it is possible to suppress the water coverage of the power generation unit 22b of the generator 22.

Further, according to the washing water tank device 4 of the present embodiment, the generator 22 (particularly, the power generation unit 22b) is divided into three equal parts in the water storage tank 16 in the left-right direction in the plan view, the tank left region L and the tank center. Among the area C and the tank right side area R, it was possible to arrange them in a different area (tank right side area R) with respect to the water landing position Q1.
As a result, it is possible to secure a relatively large distance between the landing position Q2 and the power generation unit 22b of the generator 22 at least in the same plane.
Therefore, after the wash water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 lands on the water landing position Q2 in the water storage tank 16, the scattered wash water effectively covers the power generation unit 22b of the generator 22. Can be suppressed.

Further, according to the washing water tank device 4 of the present embodiment, the water landing position Q2 in the water storage tank 16 by the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 is in the water storage tank 16 in a plan view. It is located in either the tank left side area L or the tank right side area R (tank left side area L).
On the other hand, the power generation unit 22b of the generator 22 could be arranged in either the tank left side region L or the tank right side region R (tank right side region R) in the water storage tank 16 in a plan view.
As a result, it is possible to secure a relatively large distance at least in the same plane between the landing position Q2 in the water storage tank 16 and the power generation unit 22b of the generator 22.
Therefore, after the wash water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 lands on the water landing position Q2 in the water storage tank 16, the scattered wash water causes the power generation unit 22b of the generator 22 to be flooded. It can be effectively suppressed.

Further, according to the washing water tank device 4 of the present embodiment, the landing position of the generator 22 (particularly, the power generation unit 22b) in the water storage tank 16 by the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32. With respect to Q2, it was possible to arrange the drain valve device 18 on the opposite side of the outer shell portion 18b in the front-rear direction.
As a result, after the wash water W2 flowing out from the atmosphere inlet 32b of the vacuum breaker 32 has landed at the landing position Q2 in the water storage tank 16, the scattered wash water is blocked by the outer shell portion 18b of the drain valve device 18. Therefore, it is possible to effectively suppress the water coverage of the power generation unit 22b of the generator 22.

Further, according to the washing water tank device 4 of the present embodiment, the drain valve hydraulic drive unit 20 for driving the drain valve 18a vertically by using the supply pressure of the supplied tap water is the drain valve device 18. It could be provided in the upper pull-up portion of the outer shell portion 18b.
As a result, after the wash water W2 that has flowed out from the atmosphere inlet 32b of the vacuum breaker 32 has landed at the landing position Q2 in the water storage tank 16, the scattered wash water is applied to the outer shell portion 18b of the drain valve device 18 and the drain valve. Since it is blocked by the hydraulic drive unit 20 and the like, it is possible to more effectively suppress the water contact of the power generation unit 22b of the generator 22.

Further, according to the washing water tank device 4 of the present embodiment, there is a gradient (gradient section) in the flow path (pipeline of the outflow pipe 34) on the downstream side of the drain valve hydraulic drive unit 20 located on the downstream side of the vacuum breaker 32. G) was provided, and the water turbine 22a of the generator 22 could be arranged at the lowest position P3 of the flow path of the gradient section G of the outflow pipe 34.
As a result, it is possible to prevent water from escaping from the inside of the generator 22 (water turbine 22a, etc.) after power generation. It can be suppressed.

Further, according to the water washing urinal device 1 provided with the washing water tank device 4 of the present embodiment, the washing water W2 flowing out from the atmosphere introduction port 32b of the vacuum breaker 32 has landed on the water landing position Q2 in the water storage tank 16. After that, since the scattered wash water is blocked by the outer shell portion 18b of the drain valve device 18, it is possible to suppress the water contact of the power generation portion 22b of the generator 22.

In addition, various changes can be made to the washing water tank device 4 of the embodiment of the present invention described above. For example, in the washing water tank device 4 of the present embodiment, the clutch mechanism 28 is provided between the piston 20b and the drain valve 18a, but the clutch mechanism 28 can be omitted. In this case, it is preferable to connect the outflow pipe 34 connected to the cylinder 20a below the cylinder 20a and provide an opening / closing mechanism for opening and closing the inlet of the outflow pipe 34.
Further, in the washing water tank device 4 of the present embodiment, the float side pilot valve 48 is driven based on the movement of the float 40.
On the other hand, as a modification, the present invention can be configured so that a water level detection sensor is provided instead of the float 40 and the pilot valve is controlled by the solenoid valve based on the detection signal of the water level detection sensor. In this case, apart from the solenoid valve 14 controlled by the control signal from the controller 10, a solenoid valve controlled based on the detection signal of the water level detection sensor can be provided.
Alternatively, the present invention can be configured such that a single solenoid valve 14 is controlled based on a control signal from the controller 10 and a detection signal of the water level detection sensor.
Further, the position of the generator 22 may be provided in the middle of the inflow pipe 30 instead of being provided in the middle of the outflow pipe 34. However, even when the generator 22 is provided in the middle of the inflow pipe 30, the generator 22 is located above the overflow port 24a in the water storage tank 16, and the overflow port 24a is the water storage tank in a plan view. At least a part of the projection surface A1 projected in the left-right direction of 16 may be arranged so as to overlap with the projection surface A1.

Further, in the above-described embodiment, the electric power generated by the generator is stored in the capacitor built in the controller, but the present invention may be configured so that the electric power is stored in the storage battery instead of the capacitor. it can.
Further, in the above-described embodiment, the piston provided in the drain valve hydraulic drive unit is driven in the vertical direction, but for example, the present invention can be configured so that the piston is driven in the horizontal direction. In this case, it is preferable to provide a mechanism that converts the direction in which the piston moves into the movement in the direction in which the drain valve is driven.
Further, in the above-described embodiment, a gap is provided between the through hole on the bottom surface of the cylinder and the rod, but the through hole and the rod may be watertight. Further, the present invention can be configured so that the drain valve is driven by a mechanism rotated by the water supply pressure instead of the piston of the drain valve hydraulic drive unit.
Further, in the above-described embodiment, the main valve body of the water supply control device is opened and closed by the pilot valve driven by the solenoid valve, but the present invention is configured so that the main valve body is directly opened and closed by the solenoid valve. You can also do it.
Further, in the above-described embodiment, as a means for driving the drain valve 18a so as to be able to be pulled up when the operation of the drain valve device 18 is started, the water supply pressure of the washing water supplied from the water supply in the drain valve hydraulic pressure drive unit 20 is used. Although the hydraulic drive means for driving the drain valve 18a is adopted by utilizing the drain valve 18a, the present invention is not limited to such a hydraulic drive means, and a drive means using a motor, an actuator or the like may be adopted.

1 Flush toilet device 2 Flush toilet body (flush toilet)
2a Bowl part 2b Toilet seat 4 Washing water tank device 6 Remote control device 8 Motion sensor 10 Controller 12 Water supply control device 14 Electromagnetic valve 16 Water storage tank 16a Drainage port 18 Drainage valve device 18a Drainage valve 18b Outer part 20 Drainage valve Water pressure drive part (pulling up) Department)
20a Cylinder 20b Piston 20c Spring 20d Packing 20e Through hole 20f Gap 22 Generator 22a Water wheel 22b Power generation unit 24 Overflow pipe 24a Overflow port 26 Rod 26a Upper rod 26b Lower rod 26c Lower rod protrusion 28 Clutch mechanism 30 Vacuum breaker water passage 34 Outflow pipe 34a Outflow pipe inlet 34b Tank water supply port 36 Drain valve float mechanism 36a Float part 36b Engagement part 38 Water supply pipe 38a Water stopcock 38b Constant flow valve 40 Water supply valve float 42 Main body 42a Pressure chamber 44 Main valve body 46 Valve seat 48 Float side pilot valve 50 Solenoid valve side pilot valve A1 Projection surface where the overflow port is projected in the left-right direction of the water storage tank C Tank central area (central area in the water storage tank)
G Slope section of the outflow pipe line L Tank left area (left area in the water storage tank)
P1 Minimum position of the piston P2 Maximum position of the piston P3 Minimum position of the flow path in the slope section of the outflow pipe R Right side area of the tank (right side area in the water storage tank)
Q1 Water landing position where the wash water discharged from the tank water supply port lands in the water storage tank W0 Water supplied from the water supply pipe to the water supply control device W1 Wash water supplied from the tank water supply port W2 Air inlet of the vacuum breaker Washing water flowing out from WL0 Water stoppage level of water storage tank X1 Width dimension of water storage tank Y1 Depth dimension of water storage tank

Claims (7)

It is a flush water tank device that supplies flush water to flush toilets using the power generated by itself.
A water storage tank in which the flush water to be supplied to the flush toilet is stored and a drain port for discharging the stored flush water to the flush toilet is formed.
A drain valve that opens and closes the drain port to supply and stop flush water to the flush toilet, and holds the drain valve so that it can move up and down, and drains above the water stop water level in the water storage tank. A drain valve device including an outer shell including a pull-up portion that allows the valve to be pulled up, and a drain valve device.
A generator equipped with a water turbine that rotates by the flow of tap water supplied and a power generation unit that converts the rotational movement of the water turbine into electric power.
It is provided with a solenoid valve that is operated by the electric power generated by this generator, and has a water supply control device that controls water supply and water stoppage to the water storage tank based on the operation of the solenoid valve.
The water supply control device is provided in the water passage, an air inlet that connects the water passage and the outside, and is provided in the water passage to close the air inlet when water is flowing, while the air inlet is closed when water is not flowing. It is equipped with a vacuum breaker that includes a valve body that connects the water channel and the above-mentioned air inlet.
The generator is arranged above the water stoppage level in the water storage tank, and the washing water flowing out from the atmosphere inlet of the vacuum breaker lands in the water storage tank in the left-right direction in a plan view. A washing water tank device characterized in that it is arranged on the opposite side of the outer portion of the drain valve device with respect to the water landing position. Claims that the generator is arranged in a region different from the landing position in the left side region, the central region, and the right side region divided into three equal parts in the left-right direction in the water storage tank in a plan view. Item 1. The washing water tank device according to item 1. The water landing position is located in either the left side region or the right side region in the water storage tank in a plan view.
The washing water tank device according to claim 2, wherein the generator is arranged in either the left side region or the right side region in the water storage tank in a plan view. The washing water tank device according to any one of claims 1 to 3, wherein the power generation unit is arranged on the opposite side of the water landing position with respect to the outer surface portion of the drain valve device in the front-rear direction. .. The drain valve device further includes a hydraulic drive unit that drives the drain valve so as to be movable up and down by using the supply pressure of tap water supplied, and the hydraulic drive unit is above the outer shell portion. The washing water tank device according to any one of claims 1 to 4, which is provided in the pull-up portion. The flush toilet device according to any one of claims 1 to 5, wherein a gradient is provided in the flow path on the downstream side of the vacuum breaker, and the water turbine of the generator is arranged at the lowest position of the flow path. .. It is a flush toilet device
The washing water tank device according to any one of claims 1 to 6.
The flush toilet that is washed with the wash water supplied from this wash water tank device,
A flush toilet device characterized by having.

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