JP2012021360A - Toilet bowl washing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toilet bowl washing apparatus capable of washing a toilet bowl well without increasing size.SOLUTION: The toilet bowl washing apparatus 10 includes: a washing tank 20 which stores washing water flowing from a supply channel 11 communicating with a water supply source, and includes a drain outlet 21 for draining the washing water and a drain valve 22 to open/close the drain outlet 21; a first open/close valve 30 which includes a floating ball 31 vertically moving with the level of washing water in the washing tank 20 and opens/closes the supply channel 11 with vertical movement of the floating ball 31; a pressure accumulation tank 40 which stores washing water supplied from a branch supply channel 12 branched from the supply channel 11 in the upstream side of the first open/close valve 30 in a pressured state, and includes an outlet 41A from which the washing water flows out; an outlet passage 50, the upstream side of which communicates with the outlet 41A, the downstream side of which directly communicates with the toilet bowl 1; and a second open/close valve 60 for opening/closing the outlet passage 50.

Description

  The present invention relates to a toilet bowl cleaning device.

  1 to 5 of Patent Document 1 disclose a conventional toilet cleaning device. This toilet bowl cleaning device includes a pressure accumulating tank that supplies cleaning water to the toilet bowl body. The pressure accumulating tank includes a diaphragm and a tension spring that applies an elastic force in a direction of pulling the diaphragm downward. Wash water flows into the accumulator tank from a water supply channel communicating with the water supply source. As a result, the diaphragm of the pressure accumulating tank is pushed upward against the elastic force of the tension spring. In this way, the pressure accumulation tank can store the wash water in a pressure accumulation state. Moreover, this pressure accumulation tank has the discharge port which discharges the wash water stored by the pressure accumulation state, and supplies it to the toilet bowl main body, and the drain valve which opens and closes this discharge port.

  In this toilet bowl cleaning device, when the drain valve is opened to supply flush water to the toilet bowl body, the wash water stored in the pressure accumulation tank in a pressure accumulation state flows out into the toilet bowl body. For this reason, this toilet bowl washing | cleaning apparatus can perform toilet bowl washing | cleaning favorably with the water force. In addition, by adopting this toilet bowl cleaning device, it is possible to maintain the water level of the cleaning water even if the height of the pressure accumulating tank is lowered, so that a low silhouette flush toilet can be realized.

JP-A-5-311719

  However, in the toilet bowl washing apparatus of patent document 1, since the whole quantity of the wash water used for one toilet bowl washing | cleaning is stored in an accumulation tank, an accumulation tank will enlarge. Moreover, since the pressure accumulation tank must have a pressure-resistant structure, the shape is limited. For this reason, in order to attach a pressure accumulation tank to a toilet bowl main body, there exists a possibility that a toilet bowl main body may enlarge.

  Moreover, in this toilet bowl washing | cleaning apparatus, washing water flows out vigorously from a discharge port to a toilet bowl main body with the elastic force of a tension spring. For this reason, if the total flow rate of the wash water is reduced to save water, the outflow time of the wash water flowing out to the toilet body may be too short. When the outflow time of the washing water flowing out to the toilet bowl is short, there is a risk that the discharge of filth from the toilet bowl will be insufficient. In particular, in the case of a siphon-type toilet, since the duration of the siphon action is shortened, there is a risk that the discharge of filth and the like from the toilet body will be insufficient.

  This invention is made | formed in view of the said conventional situation, Comprising: It aims at providing the toilet bowl washing | cleaning apparatus which can perform toilet bowl washing | cleaning favorably without enlarging.

The toilet bowl cleaning device of the present invention is a toilet bowl cleaning apparatus that supplies cleaning water to the toilet bowl body,
A wash tank having a drain port for storing the wash water flowing in from a water supply channel communicating with a water supply source, discharging the wash water, and a drain valve for opening and closing the drain port;
A first on-off valve that has a floating ball that moves up and down in conjunction with the level of the washing water in the washing tank, and that opens and closes the water supply channel in conjunction with the raising and lowering of the floating ball;
A pressure accumulating tank having an outlet through which the wash water flowing in from a branch water supply channel branched from the first water supply channel upstream of the first on-off valve is stored in a pressure accumulation state;
An outflow passage that communicates the upstream side with the outlet and the downstream side directly communicates with the toilet body; and
And a second on-off valve that opens and closes the outflow passage.

  In this toilet bowl cleaning apparatus, the wash water supplied to the toilet bowl body can be stored separately in a wash tank and a pressure accumulation tank. For this reason, the capacity | capacitance of an accumulator tank can be made into the minimum required, and the enlargement of an accumulator tank can be prevented. Moreover, the outflow path which connected the outflow port of the pressure accumulation tank directly to the toilet bowl main body can be opened and closed by the 2nd on-off valve. For this reason, by opening the valve at the timing when the second on-off valve is set, the wash water stored in the pressure accumulating tank can be discharged to the toilet body at an optimal timing for toilet flushing. For example, the second opening / closing valve may be opened after a lapse of a predetermined time after the drain valve of the drain of the cleaning tank is opened. When the second on-off valve is opened, since the wash water stored in the pressure accumulation state in the pressure accumulation tank flows into the toilet body through the outflow passage, the flow rate per unit time of the wash water flowing into the toilet body increases. Thereby, in the toilet bowl body, the siphon action can be generated at the optimal timing or the siphon action can be continued.

  Therefore, the toilet bowl cleaning apparatus of the present invention can perform toilet bowl cleaning without increasing the size.

  The outflow channel may communicate with a jet nozzle that ejects cleaning water along the toilet drainage channel of the toilet body, or a rim spout that ejects cleaning water toward the rim water channel of the toilet body.

Another toilet cleaning device of the present invention is a toilet cleaning device for supplying cleaning water to the toilet body,
A wash tank having a drain port for storing the wash water flowing in from a water supply channel communicating with a water supply source, discharging the wash water, and a drain valve for opening and closing the drain port;
A first on-off valve that has a floating ball that moves up and down in conjunction with the level of the washing water in the washing tank, and that opens and closes the water supply channel in conjunction with the raising and lowering of the floating ball;
A pressure accumulating tank having an outlet through which the wash water flowing in from a branch water supply channel branched from the first water supply channel upstream of the first on-off valve is stored in a pressure accumulation state;
An outflow passage communicating with the outlet on the upstream side and directly communicating with the washing tank on the downstream side;
And a second on-off valve that opens and closes the outflow passage.

  Also in this toilet bowl cleaning apparatus, the wash water supplied to the toilet bowl body can be stored separately in the wash tank and the pressure accumulation tank. For this reason, the capacity | capacitance of an accumulator tank can be made into the minimum required, and the enlargement of an accumulator tank can be prevented. Moreover, the outflow path which connected the outflow port of the pressure accumulation tank directly to the washing tank can be opened and closed by the second on-off valve. For this reason, by opening the valve at the timing when the second on-off valve is set, the wash water stored in the pressure accumulating tank can be discharged to the wash tank at an optimal timing for toilet flushing. For example, the second opening / closing valve may be opened after a lapse of a predetermined time after the drain valve of the drain of the cleaning tank is opened. When the second on-off valve is opened, the cleaning water stored in the pressure accumulation state in the pressure accumulation tank flows into the cleaning tank through the outflow path, so that the cleaning water in the cleaning tank increases and is discharged from the drain of the cleaning tank. The washing water can be continuously discharged. Thereby, in the toilet bowl body, the siphon action can be generated at the optimal timing or the siphon action can be continued.

  Therefore, the toilet bowl cleaning device of the present invention is not enlarged, and toilet bowl cleaning can be performed satisfactorily.

  The second on-off valve can be opened and closed in conjunction with the opening and closing of the first on-off valve. In this case, the wash water stored in the wash tank and the wash water stored in a pressure accumulation state in the pressure accumulation tank can be linked and supplied into the toilet body or the wash tank.

The first on-off valve includes a first main valve that opens and closes the water supply channel, a first back pressure chamber formed on a back side of the first main valve, the primary back pressure chamber, and a primary of the first main valve. A communication passage communicating with the side, a first drainage channel provided in the first back pressure chamber, a pilot valve that opens and closes the first drainage channel in conjunction with the lifting and lowering of the floating ball,
The second on-off valve may include a second main valve that opens and closes the outflow passage, and a second back pressure chamber that is formed on the back side of the second main valve and communicates with the first back pressure chamber. .

  In this case, when the floating ball descends below the set position, the pilot valve can be opened to open the first drainage channel. Thereby, the wash water in the first back pressure chamber flows out and the first main valve is opened. That is, when the water level in the cleaning tank falls below the set water level, the first on-off valve is opened to open the water supply channel, and the cleaning water can flow into the cleaning tank. When the cleaning water in the first back pressure chamber flows out, the cleaning water in the second back pressure chamber communicating with the first back pressure chamber also flows out and the second main valve is opened. That is, when the water level in the cleaning tank drops below the set water level, the second on-off valve is also opened to open the outflow path, and the cleaning water stored in the pressure accumulation state in the pressure accumulation tank can be discharged.

  When the floating ball rises from the set position, the pilot valve can be closed to close the first drainage channel. Thereby, wash water can be made to flow into the 1st back pressure room and the 2nd back pressure room, it can be filled up, and the 1st main valve and the 2nd main valve can be closed. That is, when the water level in the cleaning tank rises to the set water level, the first on-off valve and the second on-off valve can be closed. When the first opening / closing valve is closed to close the water supply channel, the flow of the cleaning water into the cleaning tank is stopped. In addition, when the second on-off valve is closed to close the outflow passage, the outflow of the wash water from the pressure accumulation tank can be stopped, and the wash water flowing into the pressure accumulation tank from the branch water supply passage can be stored in a pressure accumulation state. . In this way, the first on-off valve and the second on-off valve are interlocked with no power source, and the washing water stored in the washing tank and the pressure accumulation tank is discharged, or the washing water is stored in the washing tank and the pressure accumulation tank. be able to.

  The container may be housed in the cleaning tank, open upward and house the floatable ball so as to be movable up and down, and provided with a through hole at the lower end. In this case, the cleaning water in the container flows out from the through hole. For this reason, when the drain valve opens and the cleaning water in the cleaning tank begins to be discharged from the drain outlet, the lowering of the water level in the container is delayed compared to the lowering of the water level in the cleaning tank and outside the container. Can do. That is, a time lag can be generated between the time when the drain valve is opened and the time when the floating ball descends below the set position. In this way, a time lag occurs between the opening of the drain valve and the opening of the first on-off valve and the second on-off valve, and a predetermined time has elapsed since the cleaning water in the cleaning tank began to be discharged from the drain outlet After the lapse of time, the washing water stored in the pressure accumulation state in the pressure accumulation tank can be discharged. Thereby, in the toilet bowl body, the siphon action can be generated at the optimal timing or the siphon action can be continued.

  The washing tank may have a partition wall that divides a region between the region where the floating ball is arranged and a region where the washing water flows from the outflow path, near the maximum water level of the washing water. In this case, the ripple of the washing water in the washing tank caused by the washing water flowing into the washing tank vigorously from the pressure accumulation tank through the outflow path is prevented from propagating to the area where the floating balls are arranged by the partition wall. be able to. For this reason, the floating ball raised from the set position for closing the first on-off valve does not move up and down, and the first on-off valve can be stably closed.

The accumulator tank is
A first chamber that increases in volume as the washing water flows in, and decreases in volume as the washing water flows out from the outlet;
A second chamber that decreases in volume as the volume of the first chamber increases, and increases in volume as the volume of the first chamber decreases, and communicates with the toilet drainage channel of the toilet body;
And an elastic body that applies an elastic force in a direction of decreasing the volume of the first chamber.

  In this case, the pressure accumulation tank can be formed with a simple structure, and the size can be reduced. Moreover, the air in the toilet drainage channel of the toilet body can be sucked into the second chamber at the same time as the washing water stored in the first chamber in a pressure accumulation state is discharged. By flowing the wash water stored in the pressure accumulation state into the toilet body etc. and sucking the air in the toilet drainage channel, a siphoning action can be generated in the toilet drainage channel with a little washing water, or the siphoning action can be continued. can do.

  A flow rate adjusting mechanism provided in the outflow path may be provided. In this case, the outflow flow rate per unit time of the wash water stored in the pressure accumulation state in the first chamber of the pressure accumulation tank can be adjusted by the flow rate adjusting mechanism. Since the volume of the second chamber increases as the volume of the first chamber of the accumulator tank decreases, the suction flow rate per unit time at which the second chamber sucks air in the toilet drainage channel can also be adjusted. For this reason, depending on the difference in the type of toilet body to which this toilet bowl cleaning device is attached and the construction site of flush toilets that use this toilet bowl cleaning device, the outflow flow rate per unit time of flush water and in the toilet drainage channel The suction flow rate of air per unit time can be adjusted to be optimal for toilet flushing.

  A pressure adjusting mechanism provided in the branch water supply channel may be provided. In this case, the pressure resistance performance of the pressure accumulating tank communicating with the downstream side of the branch water supply channel can be reduced. For this reason, since the pressure accumulation tank can be simplified in structure or made of a material having low pressure resistance, the pressure accumulation tank can be manufactured at low cost. Further, the pressure accumulation tank can be made smaller.

It is a schematic diagram which shows the toilet bowl washing | cleaning apparatus of Example 1. FIG. It is the schematic which shows the 1st on-off valve and 2nd on-off valve of Examples 1-3. It is the schematic which shows operation | movement of the pressure accumulation tank of Examples 1-3. It is a schematic diagram which shows the toilet bowl washing | cleaning apparatus of Example 2. 6 is a schematic diagram showing a toilet bowl cleaning device of Example 3. FIG.

  Embodiments 1 to 3 embodying the toilet bowl cleaning device of the present invention will be described with reference to the drawings.

<Example 1>
As shown in FIG. 1, the toilet bowl cleaning apparatus 10 according to the first embodiment supplies cleaning water to the toilet bowl body 1. The toilet body 1 has a toilet bowl 2, a toilet drainage channel 3 communicating with the downstream side of the toilet bowl 2, and a rim water passage 4 formed on the inner peripheral edge of the upper end opening of the toilet bowl 2. Further, the toilet body 1 has a jet nozzle 5 that ejects wash water along the toilet drainage channel 3 attached to the lower end of the upstream of the toilet drainage channel 5.

  The toilet bowl cleaning device 10 includes a cleaning tank 20. The cleaning tank 20 communicates with a water supply channel 11 that communicates with a water supply source (not shown), and stores the cleaning water flowing in from the water supply channel 11. The cleaning tank 20 includes a drain port 21 that discharges cleaning water and a drain valve 22 that opens and closes the drain port 21. The drain valve 22 is connected to the lower end of a spherical chain (not shown). The ball chain is connected to a shaft that is rotated by a drive motor that is driven when a toilet cleaning switch (not shown) is operated. When the toilet flushing switch is operated, the drain valve 22 is pulled up via the ball chain to open the drain port 21. The washing water that has flowed out from the drain outlet 21 flows into the toilet body 1 from above the rear part of the toilet body 1. The wash water that has flowed into the toilet body 1 flows out from the rim spout 4A along the rim water passage 4 and flows down below the toilet bowl 2 while turning the inner surface of the toilet bowl 2.

  A container 23 is accommodated in the cleaning tank 20. The container 23 is opened upward to accommodate a floating ball 31 described later, and a through hole 24 is provided at the lower end portion. The opening area of the through hole 24 is smaller than the opening area of the drain port 21. Since the cleaning water in the container 23 flows out from the through hole 24, when the drain valve 22 is opened and the cleaning water flows out from the drain port 21, the water level in the cleaning tank 20 and outside the container 23 is reduced. The drop in the water level in the container 23 can be delayed.

  The toilet bowl cleaning apparatus 10 includes a first opening / closing valve 30 that opens and closes the water supply channel 11. The first on-off valve 30 has a floating ball 31 that moves up and down in conjunction with the level of the cleaning water in the container 23 stored in the cleaning tank 20. As shown in FIG. 2, the first on-off valve 30 has a diaphragm-type first main valve 32 that opens and closes the water supply passage 11. A first back pressure chamber 33 is formed on the back side of the first main valve 32. The first main valve 32 is provided with a first small hole 34 that forms a communication path that connects the first back pressure chamber 33 and the primary side of the first main valve 32. The first back pressure chamber 33 is provided with a first drainage channel 35 opened to the outside. The first drainage channel 35 is opened and closed by a pilot valve 36. One end of the pilot valve 36 is connected to the other end of the arm 31 </ b> A connected to the floating ball 31.

  The pilot valve 36 opens and opens the first drainage channel 35 when the water level of the cleaning water in the container 23 decreases and the floating ball 31 descends below the set position. Thereby, the wash water in the first back pressure chamber 33 flows out and the first main valve 32 is opened. That is, when the water level in the container 23 falls below the set water level, the first on-off valve 30 opens to open the water supply channel 11, and the cleaning water flows into the cleaning tank 20 from the water supply channel 11.

  Further, the pilot valve 36 closes the first drainage channel 35 when the water level of the cleaning water in the container 23 rises and the floating ball 31 rises from the set position. As a result, when the washing water flows into the first back pressure chamber 33 from the first small hole 34 and becomes full, the first main valve 32 is closed. That is, when the water level in the container 23 rises to the set water level, the first on-off valve 30 is closed to close the water supply channel 11 and the flow of the cleaning water from the water supply channel 11 into the cleaning tank 20 is stopped.

  As shown in FIGS. 1 and 3, the water supply passage 11 branches the branch water supply passage 12 upstream from the first on-off valve 30. The toilet bowl cleaning apparatus 10 includes a pressure accumulation tank 40 having an outlet 41A through which the wash water flowing in from the branch water supply channel 12 is stored in a pressure accumulation state and the wash water flows out.

  The branch water supply path 12 is provided with a check valve 13 and a pressure adjustment mechanism 14. The check valve 13 is disposed upstream of the pressure adjustment mechanism 14. The check valve 13 allows the flow of cleaning water from the water supply channel 11 side to the pressure accumulation tank 40 side, and prevents the reverse flow. Thereby, the wash water stored in the pressure accumulation state in the pressure accumulation tank 40 is prevented from flowing out to the water supply channel 11 side. The pressure adjusting mechanism 14 is configured by a pressure reducing valve or the like. Since the pressure adjusting mechanism 14 reduces the downstream water supply pressure below the set pressure, the pressure accumulating tank 40 communicated with the downstream end of the branch water supply passage 12 can reduce the pressure resistance performance. For this reason, as will be described later, the pressure accumulation tank 40 can be simplified in structure or made of a material having low pressure resistance, and can be manufactured at low cost. Moreover, the pressure accumulation tank 40 can be made smaller. For this reason, the pressure accumulating tank 40 can be arranged in an empty space of the toilet body 1. Therefore, it is possible to avoid an increase in the size of the flush toilet that employs the toilet bowl cleaning device 10.

  The pressure accumulating tank 40 is separated by a partition wall 44 that moves in the vertical direction, and has a first chamber 41 formed below the partition wall 44 and a second chamber 42 formed above the partition wall 44. The first chamber 41 and the second chamber 42 are airtight and watertight. Further, the pressure accumulation tank 40 includes an elastic body 43 that applies an elastic force in a direction in which the volume of the first chamber 41 is reduced. The elastic body 43 is a compression coil spring and is accommodated in the second chamber 42.

  The first chamber 41 communicates with the branch water supply channel 12 and can store the cleaning water in a pressure-accumulated state while raising the partition wall 44 against the elastic force of the elastic body 43 and increasing the volume when the cleaning water flows in. Yes (see FIG. 3A). The first chamber 41 has an outlet 41A at the lower end. The outflow passage 50 communicates with the outflow port 41A. The outflow passage 50 communicates directly with the jet nozzle 5 attached to the toilet body 1 at the downstream side. For this reason, the cleaning water stored in the pressure accumulation state in the first chamber 41 can be ejected from the jet nozzle 5.

  The second chamber 42 communicates with the upper end of the toilet drainage channel 3 of the toilet body 1 via the intake / exhaust channel 70. Therefore, when the partition wall 44 is lowered and the volume of the second chamber 42 is increased, the air in the toilet drainage channel 3 can be sucked into the second chamber 42 side through the intake / exhaust passage 70 (FIG. 3B ) And (C)). Further, when the partition wall 44 rises and the volume of the second chamber 42 decreases, the air in the second chamber 42 can be discharged to the toilet drainage channel 3 side via the intake / exhaust passage 70.

  The outflow passage 50 is provided with a second opening / closing valve 60 and a flow rate adjusting mechanism 51. The second on-off valve 60 is disposed on the upstream side of the flow rate adjusting mechanism 51. As shown in FIG. 2, the second on-off valve 60 has a diaphragm-type second main valve 61 that opens and closes the outflow passage 50. A second back pressure chamber 62 is formed on the back side of the second main valve 61. The second back pressure chamber 62 communicates with the first back pressure chamber 33 via the second drainage channel 64. A check valve 65 is provided in the second drainage channel 64. The check valve 65 allows the flow of cleaning water from the second back pressure chamber 62 side to the first back pressure chamber 33 side and blocks the reverse flow. The second main valve 61 is provided with a second small hole 63 penetrating the second back pressure chamber 62 and the primary side of the second main valve 61.

  The second on-off valve 60 is opened when the first on-off valve 30 is opened. That is, when the first on-off valve 30 is opened, if the pilot valve 36 is opened and the washing water in the first back pressure chamber 33 flows out from the first drainage channel 35, the second drainage channel 64 is passed through. The washing water in the second back pressure chamber 62 also flows out. For this reason, the second main valve 61 is opened substantially simultaneously with the opening of the first main valve 32. When the second main valve 61 is opened, the wash water stored in the first chamber 41 in a pressure accumulation state is ejected from the jet nozzle 5 through the outflow passage 50. At this time, the volume of the second chamber 42 increases, and the air in the toilet drainage channel 3 is sucked into the second chamber 42 via the intake / exhaust passage 70.

  The second on-off valve 60 is closed when the first on-off valve 30 is closed. That is, when the first on-off valve 30 is closed, if the pilot valve 36 is closed and the first drainage channel 35 is closed, the washing water that has flowed into the first back pressure chamber 33 from the first small hole 34 is used. The inside of the first back pressure chamber 33 becomes full. Then, the wash water does not flow from the second back pressure chamber 62 to the first back pressure chamber 33, and the second back pressure chamber 62 is filled with the wash water flowing into the second back pressure chamber 62 from the second small hole 63. And the second main valve 61 is closed. At this time, since the check valve 65 is provided in the second drainage channel 64, the washing water does not flow from the first back pressure chamber 33 to the second back pressure chamber 62 side. For this reason, the first back pressure chamber 33 can be quickly filled with the wash water flowing into the first back pressure chamber 33, and the first on-off valve 30 can be closed early.

  When the second main valve 61 is closed, the wash water flowing in from the branch water supply path 12 raises the partition wall 44 against the elastic force of the elastic body 43. Thereby, the wash water is stored in the first chamber 41 in a pressure accumulation state while the volume of the first chamber 41 is increased. At this time, the volume of the second chamber 42 is reduced, and the air in the second chamber 42 is discharged to the toilet drainage channel 3 side through the intake / exhaust passage 70.

  Next, toilet cleaning performed by the toilet cleaning device 10 configured in this manner by supplying cleaning water to the toilet body 1 will be described.

[Toilet bowl waiting state]
The drain valve 22 of the washing tank 20 closes the drain port 21, and the washing tank 20 and the container 23 store washing water at the set maximum water level. Moreover, as shown to FIG. 3 (A), the 1st chamber 41 of the pressure accumulation tank 40 is storing the wash water in the pressure accumulation state in the state which made the volume the maximum. The first on-off valve 30 and the second on-off valve 60 are closed. In this state, the toilet bowl cleaning apparatus 10 stands by so that toilet cleaning can be started.

[Start toilet cleaning / initial cleaning]
When a cleaning switch (not shown) is operated, the drain valve 22 is pulled up and the drain port 21 is opened. The washing water that has flowed out of the drain 21 flows out of the rim water spouting port 4A along the rim water passage 4 and flows down to the bottom of the toilet bowl 2 while turning the inner surface of the toilet bowl 2. Thereby, the water level of the wash water in the toilet bowl 2 rises. During this time, the water level inside the cleaning tank 20 and outside the container 23 and the water level inside the container 23 are lowered. The lowering speed of the water level inside the container 23 is slower than the lowering speed of the water level inside the cleaning tank 20 and outside the container 23. The first on-off valve 30 remains closed until the floating ball 31 descends below the set position.

[After a predetermined time, siphon action occurs]
When the water level inside the container 23 is further lowered and the floating ball 23 is lowered below the set position, the first on-off valve 30 and the second on-off valve 60 are opened as described above.

  When the first on-off valve 30 is opened, the water supply passage 11 is opened, and the cleaning water flows into the cleaning tank 20. When the second on-off valve 60 is opened, as shown in FIG. 3B, the outflow passage 50 is opened, and the washing water stored in the pressure accumulation state in the first chamber 41 of the pressure accumulation tank 40 is jet nozzle 5. Erupts from. Further, the volume of the second chamber 42 of the pressure accumulating tank 40 increases, and the air in the toilet drainage channel 3 is sucked into the second chamber 42 side through the intake / exhaust passage 70. At this time, the water level of the wash water in the toilet bowl 2 is raised by the wash water flowing out from the rim spout 4A. For this reason, due to the synergistic effect of the ejection of the washing water from the jet nozzle 5, the suction of the air in the toilet drainage channel 3, and the increase in the head pressure of the washing water in the toilet bowl 2, even a small amount of washing water can enter the toilet drainage channel 3. Can generate siphon action. By the siphon action, the filth in the toilet bowl 4 can be discharged to the downstream side of the toilet drainage channel 3. Thus, the siphon action can be generated at an optimal timing by opening the second on-off valve 60 after a predetermined time has elapsed.

[Continuing siphon action]
The flow rate per unit time of the washing water flowing out from the drain port 21 of the washing tank 20 gradually decreases after the drain valve 22 is opened. On the other hand, the flow rate per unit time of the washing water flowing out from the first chamber 41 of the pressure accumulating tank 40 and flowing out from the jet nozzle 5 into the toilet drainage channel 3 increases. For this reason, it is possible to prevent the flush water in the toilet drainage channel 3 from decreasing and the siphon action from being finished. In this way, the siphon action in the toilet drainage channel 3 can be continued, and filth and the like can be discharged well. At this time, the outflow flow rate per unit time of the washing water flowing out from the jet nozzle 5 and the suction flow rate per unit time of the air in the toilet drainage channel 3 sucked by the second chamber 42 are the flow rates provided in the outflow passage 50. The adjustment mechanism 51 can be adjusted to be optimal for toilet cleaning.

[Siphon action ended]
When the wash water stored in the pressure accumulation state in the first chamber 41 of the pressure accumulation tank 40 is discharged and the drain port 21 of the wash tank 20 is closed by the drain valve 22, the wash water in the toilet drainage channel 3 is reduced. The siphon action ends.

[Reservation of washing water in washing tank and toilet bowl]
When the drain port 21 of the cleaning tank 20 is closed by the drain valve 22, the cleaning water is stored in the cleaning tank 20 and the container 23. The first on-off valve 30 and the second on-off valve 60 are not closed until the cleaning water in the container 23 rises to the set water level. For this reason, as shown in FIG. 3C, the cleaning water flows out from the jet nozzle 5 through the branch water supply path 12, the first chamber 41, and the outflow path 50. This washing water is stored in the toilet bowl 2 and the toilet drainage channel 3, and sealed water is formed.

[Storage of wash water in the pressure storage tank]
When the cleaning water in the container 23 rises to the set water level, the first on-off valve 30 is closed. Thereby, the inflow of the cleaning water into the cleaning tank 20 is stopped. Further, when the first on-off valve 30 is closed, the second on-off valve 60 is also closed. Thereby, the wash water flowing from the branch water supply path 12 into the first chamber 41 of the pressure accumulating tank 40 raises the partition wall 44 against the elastic force of the elastic body 43 and increases the volume of the first chamber 41. Wash water is stored in a pressure accumulation state (see FIG. 3A). Thus, the toilet bowl cleaning device 10 returns to the toilet cleaning standby state.

  As described above, the toilet bowl cleaning device 10 according to the first embodiment stores the wash water supplied to the toilet bowl main body 1 separately in the wash tank 20 and the pressure accumulation tank 40, and thus minimizes the capacity of the pressure accumulation tank 40. It is possible to prevent the pressure accumulation tank 40 from becoming large. Moreover, the wash water stored in the first chamber 41 of the pressure accumulation tank 40 can be caused to flow out of the jet nozzle 5 at the optimal timing for toilet flushing, and the siphon action can be generated or the siphon action can be continued.

  Therefore, the toilet bowl cleaning apparatus 10 according to the first embodiment can perform toilet bowl cleaning without increasing the size.

<Example 2>
As shown in FIG. 4, the toilet bowl cleaning device 110 according to the second embodiment directly communicates the downstream side of the outflow passage 50 with the rim water spouting port 4 </ b> A that ejects washing water toward the rim water passage 4. The toilet body 1 is not provided with a jet nozzle that ejects wash water along the toilet drainage channel 3. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the toilet bowl cleaning device 110, in the toilet bowl cleaning performed by supplying the flush water to the toilet bowl body 1, when the second opening / closing valve 60 is opened, the flush water stored in the first chamber 41 of the pressure accumulation tank 40 in the accumulated pressure state. It ejects from the rim spout 4A. Thereby, the water level of the wash water in the toilet bowl 2 is held at a high position. For this reason, a siphon action can be generated in the toilet drainage channel 3 with a small amount of washing water due to the synergistic effect of the suction of the air in the toilet drainage channel 3 and the increase in the head pressure of the flushing water in the toilet bowl 2. Moreover, it is possible to prevent the wash water in the toilet bowl 2 from rapidly decreasing and to continue the siphon action.

  Therefore, the toilet bowl cleaning apparatus 110 according to the second embodiment can also perform toilet bowl cleaning without increasing the size.

<Example 3>
As shown in FIG. 5, the toilet bowl cleaning apparatus 210 according to the third embodiment directly communicates the downstream side of the outflow passage 50 with the cleaning tank 20. Further, the cleaning tank 20 has a partition wall 25 that divides a region between the region where the floating ball 31 is disposed and the region where the cleaning water flows from the outflow passage 50, near the maximum water level of the cleaning water. is doing. The toilet body 1 is not provided with a jet nozzle that ejects wash water along the toilet drainage channel 3. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the toilet bowl cleaning device 210, in the toilet bowl cleaning performed by supplying the toilet water to the toilet bowl body 1, when the second opening / closing valve 60 is opened, the cleaning water stored in the pressure accumulation state in the first chamber 41 of the pressure accumulation tank 40 is stored. It ejects into the washing tank 20. Thereby, the cleaning water in the cleaning tank 20 increases, and the outflow of the cleaning water from the drain port 21 of the cleaning tank 20 can be continued. Thereby, the wash water flowing out from the rim spout 4A of the toilet body 1 increases, and the flush water level in the toilet bowl 2 is held at a high position. For this reason, a siphon action can be generated in the toilet drainage channel 3 with a small amount of washing water due to the synergistic effect of the suction of the air in the toilet drainage channel 3 and the increase in the head pressure of the flushing water in the toilet bowl 2. Moreover, it is possible to prevent the wash water in the toilet bowl 2 from rapidly decreasing and to continue the siphon action.

  Therefore, the toilet bowl cleaning apparatus 210 according to the third embodiment is also not increased in size and can perform toilet bowl cleaning satisfactorily.

  Further, the partition wall 25 causes the washing water 31 in the washing tank 20 generated by the washing water flowing into the washing tank 20 through the outflow passage 50 from the pressure accumulation tank 40 to the region where the floating balls 31 are arranged. Propagation can be prevented. For this reason, the floating ball 31 raised from the set position for closing the first on-off valve 30 does not move up and down, and the first on-off valve 30 can be stably closed.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 to 3, the second chamber of the pressure accumulating tank is connected to the toilet drainage channel and the air in the toilet drainage channel is sucked, but the accumulating tank stores the wash water stored in the pressure accumulating state in the toilet body or the washing tank. It is not necessary to suck the air in the toilet drainage channel.
(2) In the first to third embodiments, the opening and closing of the first on-off valve and the second on-off valve are interlocked with no power supply. However, the first on-off valve and the second on-off valve are electrically operated to be electrically interlocked. May be. Alternatively, only the second on-off valve may be electrically opened and closed electrically.
(3) In Examples 1 to 3, the pressure adjustment mechanism is provided in the branch water supply channel, but the pressure adjustment mechanism may not be provided.
(4) In Examples 1 to 3, the check valve is provided in the branch water supply channel, but a backflow prevention mechanism may be incorporated in the pressure accumulation tank.
(5) In Examples 1 to 3, the flow rate adjusting mechanism is provided in the outflow passage, but the flow rate adjusting mechanism may not be provided. Alternatively, a flow rate adjusting mechanism may be incorporated in the pressure accumulation tank.
(6) In the first to third embodiments, the first small hole is formed through the first main valve, but the first small pressure hole and the second back pressure are not formed through the first main valve. You may provide the communication path which connects a chamber separately.
(7) In Examples 1 to 3, the check valve is provided in the second drainage channel, but the check valve may not be provided. In this case, the second main valve is not provided with a second small hole.

DESCRIPTION OF SYMBOLS 1 ... Toilet body 3 ... Toilet drain channel 10, 110, 210 ... Toilet washing device 11 ... Supply channel 12 ... Branch supply channel 14 ... Pressure adjustment mechanism 20 ... Washing tank 21 ... Drain port 22 ... Drain valve 23 ... Container 24 ... Through Hole 25 ... Partition wall 30 ... First on-off valve 31 ... Floating ball 32 ... First main valve 33 ... First back pressure chamber 34 ... First small hole (communication path)
DESCRIPTION OF SYMBOLS 35 ... 1st drainage channel 36 ... Pilot valve 40 ... Accumulation tank 41 ... 1st chamber 41A ... Outlet 42 ... 2nd chamber 43 ... Elastic body 50 ... Outflow channel 51 ... Flow control mechanism 60 ... 2nd on-off valve 61 ... 1st 2 main valve 62 ... 2nd back pressure chamber

Claims (9)

A toilet cleaning device for supplying cleaning water to the toilet body,
A wash tank having a drain port for storing the wash water flowing in from a water supply channel communicating with a water supply source, discharging the wash water, and a drain valve for opening and closing the drain port;
A first on-off valve that has a floating ball that moves up and down in conjunction with the level of the washing water in the washing tank, and that opens and closes the water supply channel in conjunction with the raising and lowering of the floating ball;
A pressure accumulating tank having an outlet through which the wash water flowing in from a branch water supply channel branched from the first water supply channel upstream of the first on-off valve is stored in a pressure accumulation state;
An outflow passage that communicates the upstream side with the outlet and the downstream side directly communicates with the toilet body; and
A toilet cleaning device comprising a second on-off valve for opening and closing the outflow passage. A toilet cleaning device for supplying cleaning water to the toilet body,
A wash tank having a drain port for storing the wash water flowing in from a water supply channel communicating with a water supply source, discharging the wash water, and a drain valve for opening and closing the drain port;
A first on-off valve that has a floating ball that moves up and down in conjunction with the level of the washing water in the washing tank, and that opens and closes the water supply channel in conjunction with the raising and lowering of the floating ball;
A pressure accumulating tank having an outlet through which the wash water flowing in from a branch water supply channel branched from the first water supply channel upstream of the first on-off valve is stored in a pressure accumulation state;
An outflow passage communicating with the outlet on the upstream side and directly communicating with the washing tank on the downstream side;
A toilet cleaning device comprising a second on-off valve for opening and closing the outflow passage.   The toilet cleaning device according to claim 1 or 2, wherein the second on-off valve opens and closes in conjunction with opening and closing of the first on-off valve. The first on-off valve includes a first main valve that opens and closes the water supply channel, a first back pressure chamber formed on a back side of the first main valve, the primary back pressure chamber, and a primary of the first main valve. A communication passage communicating with the side, a first drainage channel provided in the first back pressure chamber, a pilot valve that opens and closes the first drainage channel in conjunction with the lifting and lowering of the floating ball,
The second on-off valve includes a second main valve that opens and closes the outflow passage, and a second back pressure chamber that is formed on the back side of the second main valve and communicates with the first back pressure chamber. The toilet cleaning device according to any one of claims 1 to 3, wherein the toilet cleaning device is provided.   5. The toilet bowl cleaning device according to claim 4, further comprising: a container which is housed in the washing tank, opens upward and houses the floating ball so as to be movable up and down, and has a through hole at a lower end.   The cleaning tank has a partition wall that is near the maximum water level height of the cleaning water, and partitions the region where the floating balls are arranged from the region where the cleaning water flows from the outflow passage. The toilet cleaning device according to claim 2. The accumulator tank is
A first chamber that increases in volume as the washing water flows in, and decreases in volume as the washing water flows out from the outlet;
A second chamber that decreases in volume as the volume of the first chamber increases, and increases in volume as the volume of the first chamber decreases, and communicates with the toilet drainage channel of the toilet body;
The toilet bowl cleaning device according to claim 1, further comprising an elastic body that applies an elastic force in a direction in which the volume of the first chamber is reduced.   The toilet cleaning device according to claim 7, further comprising a flow rate adjusting mechanism provided in the outflow passage.   The toilet cleaning device according to claim 7 or 8, further comprising a pressure adjusting mechanism provided in the branch water supply channel.

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