JP2012036622A - Toilet bowl washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toilet bowl washing device excellent in discharge performance for dirt and the like and capable of satisfactorily performing toilet bowl washing even by using a small quantity of wash water.SOLUTION: The toilet bowl washing device 10 feeds wash water to a toilet bowl body 1 having a rim water discharge port 4A and a jet water discharge port 7A. The toilet bowl washing device 10 includes: a feed channel for feeding wash water to the rim water discharge port 4A and the jet water discharge port 7A; a valve unit 20 for switching a feeding destination such that, when washing the toilet bowl by discharging wash water from the rim water discharge port 4A and the jet water discharge port 7A, at first wash water is discharged from the rim water discharge port 4A and then continuously discharged from the jet water discharge port 7A; and a pressure accumulator 30 for discharging a part of wash water reserved in a tank 33 from the rim water discharge port 4A, such that the flow rate of wash water discharged from the rim water discharge port 4A and the jet water discharge port 7A is equal to or more than a preset value, and discharging remaining wash water from the jet water discharge port 7A.

Description

  The present invention relates to a toilet bowl cleaning device.

  Patent Document 1 discloses a conventional toilet cleaning device. This toilet cleaning device supplies cleaning water to the toilet body. The toilet bowl body has a stool part, a rim water channel provided at the inner peripheral edge of the upper end of the stool part, a rim water outlet that discharges wash water along the rim water channel, and continuous downstream of the toilet bowl part. And a jet spout for discharging washing water toward the downstream side of the toilet drainage channel.

  The toilet bowl cleaning device has a valve unit. This valve unit has a rim on-off valve and a jet on-off valve. The upstream side of the rim on-off valve and the jet on-off valve communicates with a water supply source through a water supply path. The downstream side of the rim on-off valve communicates with the rim water spouting port via the rim-side water supply channel. The downstream side of the jet on / off valve communicates with the jet water spouting port via the jet side water supply passage. A pressure accumulator for storing wash water in a pressure accumulation state communicates with the water supply channel. When the pressure accumulator closes the rim on-off valve and the jet on-off valve, the wash water flows into the tank, and the wash water can be stored in a pressure accumulation state by the hydrostatic pressure. In addition, when the rim on-off valve or jet on-off valve is opened, the pressure accumulator flows out the wash water stored in a pressure-accumulated state from the tank and adds it to the wash water supplied from the water supply source. Water can be discharged from the water outlet.

  This toilet flushing device discharges flush water in the order of the rim spout, the jet spout, and the rim spout when flushing the flush water from the rim spout and the jet spout and performing toilet cleaning. At this time, for the water discharged from the first rim water outlet and the water discharged from the jet water outlet, the water stored in the pressure accumulator tank in the accumulated state is supplied from the water supply source. Append to This toilet flushing apparatus discharges the entire amount of washing water stored in a pressure accumulation state in the pressure accumulator tank by discharging the washing water from the first rim spout. For this reason, this toilet flushing device closes the rim on-off valve and the jet on-off valve before starting the discharge of the wash water from the jet spout, and again in the pressure accumulation state in the tank of the accumulator. Store wash water. Thereafter, this toilet bowl cleaning device opens the jet on-off valve and discharges cleaning water from the jet port. In this way, this toilet flushing device spouts flush water from the rim spout to wash the toilet bowl uniformly, spits flush water from the jet spout, and filth from the toilet drainage channel. Can be discharged.

JP 2005-146602 A

  However, in the toilet bowl cleaning device disclosed in Patent Document 1, there is a time lag between the end of the flush water discharge from the first rim spout and the start of the flush water discharge from the jet spout. In toilet bowl cleaning, it is preferable to start the flushing of the cleaning water from the jet spout while the flushing water level in the toilet bowl is at the highest level due to the flushing of the flushing water from the first rim spout. In other words, toilet drainage due to the synergistic effect of the positional energy of the wash water in the toilet bowl, which is maximized when the flush water level in the toilet bowl becomes the highest level, and the flow rate of the wash water discharged from the jet spout. Soil and the like can be discharged best from the road. In this toilet bowl cleaning device, there is a time lag between the end of flush water from the first rim spout and the start of flush water from the jet spout. At the time of starting the water discharge, the water level in the toilet bowl is lower than the maximum water level. For this reason, this toilet bowl washing | cleaning apparatus cannot utilize the positional energy of the wash water in a toilet bowl part to the maximum, and there exists a possibility that discharge | emission performance, such as a filth, may be inferior. In particular, when the amount of washing water is reduced in order to save water, there is a risk that the discharge performance of filth and the like will be significantly inferior.

  The present invention has been made in view of the above-described conventional situation, and provides a toilet cleaning device that is excellent in discharging performance of filth and the like and can perform toilet cleaning satisfactorily even with a small amount of cleaning water. This is a problem to be solved.

The toilet bowl cleaning device of the present invention includes a toilet bowl portion, a rim water passage provided at an inner peripheral edge of the upper end opening of the toilet bowl portion, a rim water outlet for discharging washing water along the rim water passage, and the toilet bowl A toilet flushing device that supplies flush water to a toilet body having a toilet drainage channel provided continuously downstream of the unit and a jet spout for discharging flush water toward the downstream side of the toilet drainage channel. ,
A water supply channel for supplying cleaning water to the rim water spouting port and the jet water spouting port;
When the toilet water is washed by discharging cleaning water from the rim water outlet and the jet water outlet provided in the water supply channel, the water is first discharged from the rim water outlet and then the jet water outlet continuously. A water supply switching mechanism for switching the water supply destination to discharge the wash water from
The cleaning water stored in the tank has a tank that communicates with the water supply channel and stores cleaning water, and the cleaning water discharged from the rim water spouting port and the jet water spouting port has a flow rate equal to or higher than a set value. And a flow rate amplifying mechanism for discharging a part of the water from the rim water spouting port and the remaining part from the jet water spouting port.

  In this toilet bowl cleaning device, the wash water stored in the tank is distributed to the rim water spouting port and the jet water spouting port so that the flow rate becomes equal to or higher than the set value and discharged. For this reason, when performing toilet flushing, this toilet flushing device uses a rim spout and a jet spout to discharge the wash water from the rim spout while maintaining the flow rate of the wash water spouted from the rim water spout and the jet spout. The washing water can be continuously discharged. Therefore, it is possible to start discharging the cleaning water from the jet water outlet while the cleaning water level in the toilet bowl is at the highest water level by discharging the cleaning water from the rim water outlet. In other words, since the washing water can be discharged from the jet spout while the potential energy of the washing water in the toilet bowl is maximized, the maximum potential energy of the cleaning water in the toilet bowl and the jet spout are discharged. As a result of the synergistic effect with the washing water flow, filth and the like can be discharged well from the toilet drainage channel even with a small amount of washing water. The flow rate refers to the amount of water that passes per unit time.

  Therefore, the toilet bowl cleaning apparatus of the present invention is excellent in discharging performance of filth and the like, and can perform toilet bowl cleaning even with a small amount of cleaning water.

  The flow rate amplifying mechanism may be a pressure accumulator. This pressure accumulator device has a tank whose volume is increased by the washing water flowing in from the water supply channel, and an elastic body which gives an elastic force in a direction of decreasing the volume of the tank. When the downstream water supply channel is closed, this pressure accumulator can store the wash water in a pressure-accumulated state while expanding the tank volume against the elastic force of the elastic body by the hydrostatic pressure of the wash water. it can. When the downstream water supply channel is opened, the pressure accumulator can add the cleaning water stored in the tank in a pressure accumulation state to the cleaning water flowing through the water supply channel. Thus, the pressure accumulator can amplify the flow rate of the cleaning water discharged from the rim water spouting port and the jet water spouting port with no power source to a set value or more.

  The flow rate amplifying mechanism may be composed of a tank and a pump. In this case, by driving the pump so that the flow rate becomes equal to or higher than the set value, the wash water stored in the tank flows out, and the flow rate of the wash water discharged from the rim water spouting port and jet water spout is amplified above the set value. can do.

  The initial flow rate of the wash water discharged from the jet water spouting port can be larger than the flow rate of the wash water discharged from the rim water discharge port. In this case, the wash water stored in the tank can be appropriately distributed to the rim water spouting port and the jet water spouting port and discharged. That is, the wash water discharged from the jet spout is used to discharge filth and the like from the toilet drainage channel by generating a siphon action in the toilet drainage channel due to the water force. For this reason, it is preferable that the washing water discharged from the jet water outlet spouts as vigorously as possible at the beginning of the water discharge. On the other hand, the wash water discharged from the rim spout is intended to wash the surface of the toilet bowl part evenly, and the surface of the toilet bowl part is weaker than the initial water flow of the wash water discharged from the jet spout. Can be washed evenly.

  The amount of the remaining wash water stored in the tank discharged from the jet outlet is larger than the amount of the part of wash water stored in the tank that discharges from the rim outlet, and the jet outlet The amount of cleaning water discharged from the rim can be larger than the amount of cleaning water discharged from the rim spout. In this case, the wash water stored in the tank can be appropriately distributed to the rim water spouting port and the jet water spouting port and discharged. That is, the wash water discharged from the jet outlet is used to discharge filth and the like from the toilet drainage channel by generating and continuing a siphon action in the toilet drainage channel. For this reason, it is preferable that the washing water discharged from the jet water outlet is as large as possible. On the other hand, the wash water discharged from the rim spout is intended to clean the surface of the toilet bowl part evenly, and even if the amount of the wash water discharged from the jet spout is less than the surface of the toilet bowl part It can be washed evenly.

The water supply channel is composed of an upstream water supply channel communicating with a water supply source, and a jet-side water supply channel and a rim-side water supply channel formed by branching the downstream end of the upstream water supply channel,
The flow rate amplifying mechanism can communicate with the jet side water supply channel.

  In this case, since the flow path from the flow rate amplifying mechanism to the jet spout is short, the pressure loss of the wash water flowing between them can be reduced. For this reason, this toilet bowl washing | cleaning apparatus can discharge the washing water which flowed out from the flow volume amplification mechanism vigorously from the jet spout. Therefore, filth etc. can be discharged | emitted favorably from a toilet drainage channel.

The water supply switching mechanism controls the opening and closing valve for the jet that opens and closes the jet side water supply path, the opening and closing valve for the rim that opens and closes the rim side water supply path, and the opening and closing of the opening and closing valve for the jet and the opening and closing valve for the rim. Control device,
The flow rate amplifying mechanism is communicated with the jet side water supply channel upstream of the jet on / off valve, and is provided in the jet side water supply channel upstream of the communicating portion communicating with the flow rate amplifying mechanism, A flow rate adjusting valve that allows a large flow rate to the downstream side of the water supply channel and allows a small flow rate to the upstream side may be provided.

  In this case, the flow rate adjustment valve can reduce the flow rate of the cleaning water flowing out from the flow rate amplification mechanism when the cleaning water is discharged from the rim water spouting port rather than when the cleaning water is discharged from the jet water spouting port. Therefore, the initial flow rate of the cleaning water discharged from the jet spouting port is made larger than the flow rate of the cleaning water discharged from the rim spouting port, or the amount of the cleaning water discharged from the jet spouting port is discharged from the rim spouting port. Increasing the amount of water than the amount of water can be easily realized with a simple structure.

It is a top view which shows the toilet body main body to which the toilet bowl washing | cleaning apparatus of the Example was attached. It is sectional drawing which shows the toilet bowl main body to which the toilet bowl washing | cleaning apparatus of the Example was attached. It is sectional drawing which shows the valve unit of an Example. It is a block diagram which shows the toilet bowl washing | cleaning apparatus of an Example. It is the schematic which shows the water storage process to the pressure accumulator of the toilet bowl washing | cleaning apparatus of an Example. It is the schematic which shows the toilet bowl washing standby state of the toilet bowl washing | cleaning apparatus of an Example. It is the schematic which shows the bowl washing | cleaning process of the toilet bowl washing | cleaning apparatus of an Example. It is the schematic which shows the jet cleaning process of the toilet bowl washing | cleaning apparatus of an Example. It is the schematic which shows the water covering process of the toilet bowl washing | cleaning apparatus of an Example. It is a graph which shows the flow volume change in toilet bowl washing | cleaning of the toilet bowl washing | cleaning apparatus of an Example. (A), (B), (C) It is a block diagram which shows the toilet bowl washing | cleaning apparatus of another Example. (A), (B) It is a block diagram which shows the toilet bowl washing | cleaning apparatus of another Example.

  An embodiment embodying the toilet cleaning device of the present invention will be described with reference to the drawings.

<Example>
The toilet bowl washing | cleaning apparatus 10 of an Example supplies washing water to the toilet bowl main body 1, as shown in FIGS. The toilet body 1 includes a toilet bowl 2, a rim water passage 3, a rim water outlet 4A, a toilet drainage channel 6, and a jet water outlet 7A.

  The rim water passage 3 is provided in a shelf shape on the inner peripheral edge of the upper end opening of the toilet bowl 2. The rim water spouting port 4 </ b> A is formed so as to open at the front end surface of the rim nozzle 4. The rim nozzle 4 is disposed at the left rear corner of the toilet bowl 2 as viewed from the front end F side of the toilet bowl 2. The rim nozzle 4 is connected to the downstream end of the rim-side water supply pipe 5A that forms a part of the rim-side water supply path. The wash water discharged from the rim water spouting port 4 </ b> A flows down into the stool part 2 while turning around the upper edge of the stool part 2 along the rim water passage 3 in one direction. For this reason, when the wash water is discharged from the rim spout 4A, the level of the wash water in the stool part 2 rises while forming a swirling flow toward the center part in the stool part 2.

  The toilet drainage channel 6 is continuously provided on the downstream side of the toilet bowl 2. The toilet drainage channel 6 includes an ascending channel extending rearward and obliquely upward from the lower portion of the toilet bowl 2, and a descending channel bent from the upper end of the ascending channel and extending vertically downward. ing.

  The jet water spouting port 7 </ b> A is formed to open at the tip surface of the jet nozzle 7. The jet nozzle 7 is attached to the upstream lower end of the ascending flow path of the toilet drainage channel 6. The jet nozzle 7 is connected to a downstream end portion of a jet-side water supply pipe 8A that forms a part of the jet-side water supply path. Wash water discharged from the jet spout 7 </ b> A flows downstream of the toilet drainage channel 6 while filling the rising channel of the toilet drainage channel 6.

  The toilet bowl cleaning device 10 includes a valve unit 20 that is a water supply switching mechanism and a pressure accumulator 30 that is a flow rate amplification mechanism. The valve unit 20 and the pressure accumulator 30 which are the toilet bowl washing | cleaning apparatus 10 are attached to the rear part of the toilet bowl main body 1, and the upper part and the side are covered with the upper cover 11C and the lower cover which is not shown in figure. The upper cover 11C is attached to the upper rear part of the toilet body 1, and pivotally supports the toilet seat 11A and the toilet lid 11B. The lower cover is attached to the rear side surface of the toilet body 1.

  As shown in FIGS. 3 and 4, the valve unit 20 includes an upstream channel 9B, a jet channel 8B formed by branching the downstream end of the upstream channel 9B, and a rim channel 5B. Have. The upstream flow path 9B is formed to extend in the vertical direction. The jet-side channel 8B extends in the horizontal direction from the upper end, which is the downstream end of the upstream-side channel 9B, then bends upward, and extends in the vertical direction via the jet on-off valve 21. The rim side channel 5B extends from the upper end, which is the downstream end of the upstream channel 9B, in the direction opposite to the portion extending in the horizontal direction of the jet side channel 8B, and then bends upward, thereby opening and closing the rim opening / closing valve. It extends in the vertical direction via 22.

  The upstream flow path 9B forms an upstream connection portion 9C at the lower portion which is the upstream end. The upstream connecting portion 9C is connected to a water supply pipe 9A that communicates with a water supply source. As described above, the upstream water supply channel is configured by the upstream channel 9B, the upstream connecting portion 9C, and the water supply pipe 9A. The upstream flow path 9 </ b> B accommodates the strainer 25. The strainer 25 can be attached and detached from the lower end of the upstream flow path 9B. In the upstream flow path 9B, a check valve 26 is arranged at the upper end portion which is the downstream end. The check valve 26 allows the wash water to flow from the upstream side to the downstream side and prevents the reverse flow.

  The jet-side flow path 8B forms a jet-side connecting portion 8C at the upper part which is the downstream end. The jet side connecting portion 8C is connected to the jet side water supply pipe 8A. Thus, the jet side water supply path is configured by the jet side flow path 8B, the jet side connection portion 8C, and the jet side water supply pipe 8A. Moreover, the water supply path which supplies washing water to the jet spout 7A is comprised by the upstream water supply path and the jet side water supply path.

  The jet-side flow path 8B is a portion extending in the horizontal direction from the upper end portion of the upstream-side flow path 9B, and houses the flow rate adjusting valve 23 on the upstream side from the bent portion C bent upward. The flow rate adjusting valve 23 is elastic in the direction in which the adjusting valve main body 23A contacts the valve seat 8D from the downstream side with the valve seat 8D provided by expanding the jet-side flow path 8B, and the adjusting valve main body 23A contacts the valve seat 8D. A coil spring 23C for applying a force. The adjustment valve main body 23A has a small hole 23B provided therethrough. When the cleaning water flows from the upstream side to the downstream side, the adjustment valve main body 23A is separated from the valve seat portion 8D. For this reason, the flow rate adjustment valve 23 allows a flow of a large flow rate to the downstream side of the jet side water supply channel. On the other hand, in the flow rate adjusting valve 23, when the cleaning water flows from the downstream side to the upstream side, the adjusting valve main body 23A can be seated on the valve seat portion 8D, and the cleaning water can be circulated only through the small holes 23B. For this reason, the flow rate adjusting valve 23 allows a small flow rate to the upstream side of the jet side water supply channel.

  The jet-side flow path 8 </ b> B forms a communication portion 27 that communicates with the pressure accumulator 30 via the water supply / drain pipe 31 at the lower end of the bent portion C. Further, the jet-side flow path 8B forms a local cleaning water supply path S for supplying cleaning water to a local cleaning device (not shown) on the side surface of the bent portion C.

  The jet-side flow path 8B is downstream of the bent portion C, and is provided with a jet on-off valve 21 that opens and closes the jet-side water supply path at a lower portion of a portion extending in the vertical direction. The jet on / off valve 21 includes a diaphragm-type first main valve 21A, a first valve seat 21B to which the first main valve 21A is attached and detached, a first back pressure chamber 21C formed behind the first main valve 21A, a first A first drain passage 21D that communicates the back pressure chamber 21C and the secondary side of the first main valve 21A, a first pilot valve 21E that opens and closes the first drain passage 21D, and a first pilot that drives the first pilot valve 21E to open and close A solenoid 21F is provided. The first main valve 21A has a first small hole 21G that communicates the first back pressure chamber 21C and the primary side of the first main valve 21A. The first solenoid 21F is driven based on an open / close signal transmitted from the control device 24.

  The jet on-off valve 21 configured in this way opens and closes the jet-side water supply channel as described below. When the first solenoid 21F receives a valve opening signal from the control device 24, the first solenoid 21F is driven and the first pilot valve 21E opens the first drainage channel 21D. Then, the wash water in the first back pressure chamber 21C is drained from the first drainage channel 21D to the secondary side of the first main valve 21A. As a result, the pressure of the washing water applied to the surface opposite to the surface of the first main valve 21A on the first back pressure chamber 21C side becomes higher, and the first main valve 21A separates from the first valve seat 21B. Thus, the jet on-off valve 21 is opened. On the other hand, when the first solenoid 21F receives the valve closing signal from the control device 24, the first solenoid 21F is driven and the first pilot valve 21E closes the first drain passage 21D. Then, washing water flows into the first back pressure chamber 21C from the primary side of the first main valve 21A through the first small hole 21G. Thereby, the surface of the first main valve 21A on the first back pressure chamber 21C side is higher than the pressure of the washing water applied to the opposite surface, and the first main valve 21A is seated on the first valve seat 21B. Thus, the jet on-off valve 21 is closed.

  A jet-side atmosphere release valve 28A is provided at the upper end of the jet-side flow path 8B. The jet-side air release valve 28A is open to the atmosphere when washing water is not discharged from the jet water outlet 7A via the jet-side water supply channel, and opens downstream from the jet-side air release valve 28A to the atmosphere. . This prevents the sewage on the secondary side from the jet atmosphere release valve 28 </ b> A from flowing backward from the jet on / off valve 21 to the primary side.

  The rim-side flow path 5B forms a rim-side connecting portion 5C at the upper part which is the downstream end. The rim side connecting portion 5C is connected to the rim side water supply pipe 5A. As described above, the rim-side water supply path is configured by the rim-side flow path 5B, the rim-side connecting portion 5C, and the rim-side water supply pipe 5A. Further, the upstream water supply channel and the rim-side water supply channel constitute a water supply channel that supplies cleaning water to the rim water spouting port 4A.

  The rim-side channel 5B houses a lid member 29 in a portion extending in the horizontal direction from the upper end of the upstream-side channel 9B. The lid member 29 has a cylindrical shape with one end (the right side in FIG. 3) closed, and a plurality of openings 5D are provided on the side surface so that cleaning water flows from the inside to the outside. The washing water that has flowed out of the opening 5D flows into the rim-side channel 5B that extends in the vertical direction. The lid member 29 can be attached to and detached from the rim side channel 5B. For this reason, the lid member 29 can be removed from the rim-side flow path 5B, and the flow rate adjusting valve 23 can be stored in the jet-side flow path 8B or removed for maintenance.

  The rim-side flow path 5B is provided with a rim opening / closing valve 22 for opening and closing the rim-side water supply path at the lower part of the portion extending in the vertical direction. The rim on-off valve 22 includes a diaphragm-type second main valve 22A, a second valve seat 22B to which the second main valve 22A is attached and detached, a second back pressure chamber 22C formed behind the second main valve 22A, a second A second drain passage 22D that communicates the back pressure chamber 22C and the secondary side of the second main valve 22A, a second pilot valve 22E that opens and closes the second drain passage 22D, and a second pilot valve 22E that opens and closes the second pilot valve 22E. A solenoid 22F is provided. The second main valve 22A has a second small hole 22G that communicates the second back pressure chamber 22C and the primary side of the second main valve 22A. The second solenoid 22F is driven based on an open / close signal transmitted from the control device 24.

  The rim on-off valve 22 configured in this way opens and closes the rim-side water supply channel as described below. When the second solenoid 22F receives the valve opening signal from the control device 24, the second solenoid 22F is driven and the second pilot valve 22E opens the second drainage channel 22D. Then, the wash water in the second back pressure chamber 22C is drained from the second drainage channel 22D to the secondary side of the second main valve 22A. As a result, the pressure of the washing water applied to the surface opposite to the second back pressure chamber 22C side of the second main valve 22A becomes higher, and the second main valve 22A is separated from the second valve seat 22B and the rim is removed. The on-off valve 22 is opened. On the other hand, when the second solenoid 22F receives a valve closing signal from the control device 24, the second solenoid 22F is driven and the second pilot valve 22E closes the second drainage channel 22D. Then, washing water flows into the second back pressure chamber 22C from the primary side of the second main valve 22A through the second small hole 22G. Thereby, the surface of the second main valve 22A on the second back pressure chamber 22C side becomes higher than the pressure of the washing water applied to the opposite surface, and the second main valve 22A is seated on the second valve seat 22B. Then, the rim on-off valve 22 is closed.

  A rim-side air release valve 28B is provided at the upper end of the rim-side flow path 5B. The rim-side air release valve 28B is open to the atmosphere when the wash water is not discharged from the rim spout 4A via the rim-side water supply channel, and opens downstream from the rim-side air release valve 28B to the atmosphere. . This prevents the sewage on the secondary side from the rim atmosphere release valve 28 </ b> B from flowing back to the primary side from the rim opening / closing valve 22.

  As shown in FIGS. 5 to 9, the accumulator 30 includes a partition wall 32 that reciprocates, and includes a tank 33 that increases and decreases the volume by the reciprocation of the partition wall 32. The pressure accumulator 30 includes a coil spring 34 that applies an elastic force to the partition wall 32 in a direction that reduces the volume of the tank 33. For this reason, the tank 33 of the pressure accumulator 30 can store the wash water in a pressure-accumulated state while expanding the volume when the wash water flows in through the water supply / drain pipe 31.

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

[Water storage process for pressure accumulator]
As shown in FIG. 5, the toilet flushing apparatus 10 closes the jet on-off valve 21 and the rim on-off valve 22. In this state, the wash water flowing into the valve unit 20 from the water supply pipe 9A communicated with the water supply source is the upstream connecting portion 9C, the upstream flow path 9B, the portion extending in the horizontal direction of the jet side flow path 8B, the flow rate adjustment It flows into the tank 33 of the pressure accumulator 30 via the valve 23, the communication portion 27 formed in the bent portion C, and the water supply / drainage pipe 31. The partition wall 32 moves in the direction in which the volume of the tank 33 increases against the elastic force of the coil spring 34 by the washing water flowing into the tank 33.

[Toilet bowl waiting state]
When a predetermined time elapses after the cleaning water starts to flow into the tank 33, the toilet cleaning device 10 stores the cleaning water in the tank 33 in a pressure accumulation state equal to the hydrostatic pressure, as shown in FIG. The This state becomes a standby state for toilet cleaning.

[Bowl washing process]
When a toilet flushing switch (not shown) is operated, the control device 24 transmits a valve opening signal to the second solenoid 22F of the rim opening / closing valve 22, and the rim opening / closing valve 22 is opened as shown in FIG. To do. At this time, the jet on-off valve 21 remains closed.

  When the rim on-off valve 22 is opened, the wash water flowing into the valve unit 20 from the water supply pipe 9A communicating with the water supply source is directed to the rim-side flow path 5B via the upstream connection portion 9C and the upstream flow path 9B. Inflow. Moreover, since the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is accumulated at a hydrostatic pressure, it is higher than the flow pressure of the wash water flowing into the valve unit 20 from the water supply source. For this reason, the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is also supplied to the rim side through the horizontally extending portions of the water supply / drainage pipe 31, the flow rate adjusting valve 23, and the jet side flow path 8B. It flows in toward the flow path 5B. That is, the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is added to the wash water supplied from the water supply source in the upstream portion of the rim side flow path 5B. In this way, the washing water whose flow rate has been amplified flows from the rim water outlet 4A provided in the rim nozzle 4 to the rim water passage 3 via the rim side flow path 5B, the rim side connection portion 5C, and the rim side water supply pipe 5A. Water is discharged along.

  As shown in FIG. 10, the wash water P1 stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is added to the wash water R1 supplied from the water supply source as the wash water discharged from the rim water spouting port 4A. . For this reason, even if the flow rate of the cleaning water R1 supplied from the water supply source is small, the flow rate of the cleaning water discharged from the rim water spouting port 4A can be set to a set value or more. Accordingly, the cleaning water can be discharged from the rim water spouting port 4 </ b> A vigorously, and the cleaning water can flow to the end of the rim water passage 3. For this reason, the whole toilet bowl part 2 can be wash | cleaned uniformly. Moreover, the water level of the wash water in the toilet bowl part 2 can be raised.

  In addition, since the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 flows into the rim-side flow path 5B through the small hole 23B of the flow rate adjustment valve 23, the wash water flowing out from the tank 33 This prevents the washing water from flowing out from the tank 33 at once. For this reason, only a part of the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 can be discharged from the rim spout 4A. As described above, the flow rate adjusting valve 23 can easily adjust the flow rate and amount of the cleaning water discharged from the rim water spouting port 4A with a simple structure.

  The control device 24 transmits a valve closing signal to the second solenoid 22F of the rim on-off valve 22 so that the rim on-off valve 22 is closed after a set time (T1) has elapsed since the toilet flushing switch was operated. To do. In this way, the rim on-off valve 22 is closed, and the bowl cleaning process is completed.

[Jet cleaning (sewage discharge) process]
Just before the set time (T1) elapses after the toilet flushing switch is operated, the control device 24 sends a valve opening signal to the first solenoid 21F of the jet on / off valve 21, and as shown in FIG. The on-off valve 21 is opened.

  When the jet opening / closing valve 21 is opened, the washing water flowing into the valve unit 20 from the water supply pipe 9A communicating with the water supply source is directed to the jet side flow path 8B via the upstream connection portion 9c and the upstream flow path 9B. Inflow. The adjustment valve main body 23A of the flow rate adjustment valve 23 is separated from the valve seat portion 8D by the cleaning water flowing into the jet side flow path 8B. As described above, the flow rate adjusting valve 23 allows a flow of a large flow rate to the downstream side, so that the washing water flowing into the jet side flow path 8B from the water supply pipe 9A communicating with the water supply source does not reduce the flow rate. , Can flow into the downstream side of the jet-side flow path 8B.

  Moreover, since the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is accumulated at a hydrostatic pressure, it is higher than the flow pressure of the wash water flowing into the valve unit 20 from the water supply source. For this reason, the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 also flows from the connecting portion 27 toward the jet-side flow path 8B via the water supply / drainage pipe 31. That is, the wash water stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is added to the wash water supplied from the water supply source in the jet side flow path 8B downstream of the flow rate adjustment valve 23. In this way, the wash water whose flow rate has been amplified flows from the jet spout 7A provided in the jet nozzle 7 through the jet side flow path 8B, the jet side connection portion 8C, and the jet side water supply pipe 8A to the toilet drainage channel 6. Water is discharged along the ascending flow path.

  Since the tank 33 of the pressure accumulator 30 communicates with the jet side flow path 8B downstream from the flow rate adjustment valve 23 via the water supply / drain pipe 31, there is little resistance to the flow of the washing water, and the jet water outlet The flow path up to 7A is short. For this reason, the pressure loss of the washing water while flowing to the jet water spouting port 7A can be reduced. Therefore, the washing water added with the washing water stored in the pressure accumulation state in the tank 33 can be discharged from the jet spouting port 7A.

  As shown in FIG. 10, the wash water P2 stored in the pressure accumulation state in the tank 33 of the pressure accumulator 30 is added to the wash water J discharged from the jet water outlet 7A. . For this reason, even if there is little flow volume of the wash water J supplied from a water supply source, the flow volume of the wash water discharged from the jet spout 7A can be made more than a set value. Thereby, wash water can be spouted vigorously from the jet spout 7A.

  Further, since the jet on / off valve 21 is opened immediately before the rim on / off valve 22 is closed (the bowl cleaning process is completed), the water discharged from the rim water spouting port 4A and the water from the jet water spouting port 7A are discharged. Wash water is continuously discharged. For this reason, the discharge of the wash water from the jet spout 7A can be started in a state where the level of the wash water in the toilet bowl 2 is at the highest level by the discharge of the wash water from the rim spout 4A. That is, since the washing water can be discharged from the jet spouting port 7A in a state where the positional energy of the washing water in the toilet bowl 2 is maximized, the maximum energy of the washing water in the toilet bowl 2 and the jet outlet Due to the synergistic effect with the water flow of the washing water discharged from 7A, a siphon action can be generated in the toilet drainage channel 6, and filth and the like can be discharged well from the toilet drainage channel 6 even with a small amount of washing water.

  Therefore, the toilet bowl cleaning apparatus 10 of the embodiment is excellent in discharging performance of filth and the like, and can perform toilet bowl cleaning even with a small amount of cleaning water.

  Moreover, the wash water P2 stored in the pressure-accumulated state in the tank 33 has a pressure loss in the case where water is discharged from the jet water discharge port 7A compared to the case where water is discharged from the rim water discharge port 4A during the bowl cleaning process. Less and more flow. For this reason, the initial flow rate at which the jet on-off valve 21 is opened, that is, the initial flow rate at which the cleaning water is discharged from the jet spout 7A is the flow rate of the cleaning water discharged from the rim spout 4A during the bowl cleaning process. More than. Thereafter, since the wash water stored in the pressure accumulation state in the tank 33 decreases with time, the flow rate of the wash water discharged from the jet spouting port 7A decreases.

  Thus, the toilet bowl washing | cleaning apparatus 10 can distribute and distribute the wash water stored in the tank 33 in the pressure accumulation state appropriately to the rim spout 4A and the jet spout 7A. That is, the wash water discharged from the jet spout 7A is used for generating a siphon action in the toilet drainage channel 6 by the water force and discharging filth and the like from the toilet drainage channel 6. For this reason, it is preferable that the washing water discharged from the jet water outlet 7A is discharged as vigorously as possible at the beginning of the water discharge. On the other hand, the wash water discharged from the rim spout 4A during the bowl washing process is intended to wash the surface of the toilet bowl 2 uniformly, and the initial water flow of the wash water discharged from the jet spout 7A. Even if it is weaker, the surface of the toilet bowl 2 can be washed evenly.

  The control device 24 transmits a valve closing signal to the first solenoid 21F of the jet on / off valve 21 so that the jet on / off valve 21 is closed after a set time (T2) has elapsed since the toilet flushing switch was operated. To do. In this way, the jet on-off valve 21 is closed, and the jet cleaning process is completed. In the jet cleaning step, all of the cleaning water stored in the tank 33 in a pressure accumulation state is discharged from the jet water discharge port 7A.

  The amount of cleaning water discharged from the jet spout 7A in the jet cleaning step is larger than the amount of cleaning water discharged from the rim spout 4A in the bowl cleaning step. Thus, the toilet bowl washing | cleaning apparatus 10 can distribute and distribute the wash water stored in the tank 33 in the pressure accumulation state appropriately to the rim spout 4A and the jet spout 7A. That is, the wash water discharged from the jet spout 7 </ b> A is used for generating and continuing siphon action in the toilet drainage channel 6 to discharge filth and the like from the toilet drainage channel 6. For this reason, it is preferable that the washing water discharged from the jet water outlet 7A has as much water as possible. On the other hand, the wash water discharged from the rim spout 4A during the bowl washing step is intended to wash the surface of the toilet bowl 2 evenly, and is more than the amount of wash water discharged from the jet spout 7A. At least, the surface of the toilet bowl 2 can be washed evenly.

[Water-covering process]
Just before the set time (T2) elapses after the toilet flushing switch is operated, the control device 24 sends a valve opening signal to the second solenoid 22F of the rim opening / closing valve 22, and as shown in FIG. The on-off valve 22 is opened.

  At the time when the rim on-off valve 22 is opened, no wash water is stored in the tank 33 of the pressure accumulator 30. For this reason, when the rim on-off valve 22 is opened, only the cleaning water flowing into the valve unit 20 from the water supply pipe 9A communicating with the water supply source is the upstream connection portion 9C, the upstream flow path 9B, and the rim side flow path 5B. Water is discharged along the rim water passage 3 from the rim water outlet 4A provided in the rim nozzle 4 via the rim side connecting portion 5C and the rim side water supply pipe 5A.

  As shown in FIG. 10, the wash water discharged from the rim spout 4A is only the wash water R2 supplied from the water supply source, and is stored in the toilet bowl 2 to form a water seal. The control device 24 transmits a valve closing signal to the second solenoid 22F of the rim on-off valve 22 so that the rim on-off valve 22 opens after a set time (T3) has elapsed since the toilet flushing switch was operated. To do. In this way, the rim on-off valve 22 is closed, and the water covering step is completed.

  When the water covering process is completed, the toilet flushing apparatus 10 is in a state where the jet on-off valve 21 and the rim on-off valve 22 are closed as shown in FIG. For this reason, the toilet bowl washing | cleaning apparatus 10 returns to the toilet bowl washing standby state via the water storage process to the pressure accumulator 30. FIG.

  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 the embodiment, the flow rate adjustment valve 23 is provided in the jet side water supply channel, but the flow rate adjustment valve 23 may not be provided.

  In this case, as shown in FIG. 11A, the pressure accumulator 30 may be communicated with the upstream water supply passages 9A, 9B, and 9C via the on-off valve 40. In the toilet bowl cleaning device 100, the opening / closing valve 40 is opened / closed in accordance with the timing for opening / closing the rim opening / closing valve 22 during the bowl cleaning process and the timing for opening / closing the jet opening / closing valve 21 during the jet cleaning process. Thereby, the water discharge from the rim water spouting port 4A and the water discharge from the jet water spouting port 7A are continuously performed while the flow rate of the water discharged from the rim water discharging port 4A and the jet water discharging port 7A is equal to or higher than the set value. Can be done.

  Moreover, as shown to FIG. 11 (B), it is good to connect the pressure accumulator 30 via the upstream water supply path 9A, 9B, 9C via the water supply / drain pipe 50A, 50B from which the pipe diameter differs from the flow path switching valve 50. In the toilet bowl cleaning device 110, by switching the flow path switching valve 50, the washing water stored in the pressure accumulator 30 in a pressure accumulation state flows out from the water supply / drainage pipe 50A having a smaller pipe diameter in the pot washing process. On the other hand, in the jet cleaning process, the cleaning water stored in the pressure accumulator 30 in the pressure accumulation state flows out from the water supply / drainage pipe 50B having the larger pipe diameter. Thereby, the initial flow rate of the cleaning water discharged from the jet spout 7A during the jet cleaning step can be made larger than the flow rate of the cleaning water discharged from the rim spout 4A during the bowl cleaning step.

  Further, as shown in FIG. 11C, the pressure accumulator 30 may be communicated with the jet-side flow path 8B via a flow path switching valve 51. In the toilet bowl cleaning device 120, the flow path switching valve 51 is switched in accordance with the timing for opening and closing the rim on-off valve 22 during the bowl cleaning process and the timing for opening and closing the jet on-off valve 21 during the jet cleaning process. The wash water stored in the pressure accumulator 30 in a pressure-accumulated state is added to the wash water discharged from the rim spout 4A or the jet spout 7A. Thereby, the water discharge from the rim water spouting port 4A and the water discharge from the jet water spouting port 7A are continuously performed while the flow rate of the water discharged from the rim water discharging port 4A and the jet water discharging port 7A is equal to or higher than the set value. Can be done.

(2) In the embodiment, the pressure accumulator 30 is employed as the flow rate amplifying mechanism. However, the flow rate amplifying mechanism may be composed of a tank and a pump.

  In this case, as shown in FIG. 12A, the tank 35 and the pump 36 may be provided in series in order from the upstream side of the jet-side water supply channels 8A, 8B, and 8C. In this toilet bowl cleaning device 200, the upstream water supply channels 9A, 9B, and 9C have an on-off valve 41, the upstream water supply channels 9A, 9B, and 9C are the rim-side water supply channels 5A, 5B, and 5C and the jet-side water supply channels 8A, 8B, and 8C. A flow path switching valve 52 is provided at a portion branching off. In addition, the toilet bowl cleaning device 200 includes a bypass passage 70 that communicates with the jet-side water supply passages 8A, 8B, and 8C on the downstream side of the pump 36 and the rim-side water supply passages 5A, 5B, and 5C. The bypass passage 70 is provided with an on-off valve 42 and a check valve 60. The check valve 60 allows the wash water to flow from the jet-side water supply channels 8A, 8B, 8C to the rim-side water supply channels 5A, 5B, 5C, and prevents the reverse flow.

  In the toilet bowl cleaning device 200, when the cleaning water is discharged from the rim water spouting port 4A in the bowl cleaning process, the flow path switching valve 52 is switched to supply the cleaning water supplied from the water supply source to the rim water discharging port 4A. Then, the on-off valve 42 is opened, and the pump 36 is driven to supply a part of the cleaning water stored in the tank 35 to the rim water spouting port 4 </ b> A via the bypass channel 70. In the jet cleaning step, when the cleaning water is discharged from the jet water spouting port 7A, the on-off valve 42 is closed and the pump 36 is driven so that the remaining cleaning water stored in the tank 35 is supplied to the jet water spouting port 7A. Supply. At this time, the pump 36 is driven so that the flow rate of the cleaning water discharged from the rim water spouting port 4A and the jet water spouting port 7A is equal to or higher than a set value.

  Further, as shown in FIG. 12B, it is preferable to provide an amplification channel 37 arranged in order of the tank 35 and the pump 36 in order from the upstream side in parallel to the jet-side water supply channels 8A, 8B, and 8C. This toilet flushing device 210 also has an on-off valve 41 in the upstream water supply channels 9A, 9B, and 9C, the upstream water supply channels 9A, 9B, and 9C are the rim-side water supply channels 5A, 5B, and 5C and the jet-side water supply channels 8A, 8B, and 8C. A flow path switching valve 52 is provided at a portion branching off. Further, the toilet bowl cleaning device 210 includes a jet-side water supply path 8A, 8B, 8C and a rim-side water supply path 5A which are downstream of the portion where the downstream end of the amplification flow path 37 joins the jet-side water supply paths 8A, 8B, 8C. A bypass passage 70 communicating with 5B and 5C is provided. The bypass passage 70 is provided with an on-off valve 42 and a check valve 60. The check valve 60 allows the wash water to flow from the jet-side water supply channels 8A, 8B, 8C to the rim-side water supply channels 5A, 5B, 5C, and prevents the reverse flow.

  In the toilet bowl cleaning device 210, when the cleaning water is discharged from the rim water spouting port 4A in the bowl cleaning process, the flow path switching valve 52 is switched to supply the cleaning water supplied from the water supply source to the rim water discharging port 4A. Then, the on-off valve 42 is opened, and the pump 36 is driven to supply a part of the cleaning water stored in the tank 35 to the rim water spouting port 4 </ b> A via the bypass channel 70. Further, in the jet cleaning process, when the cleaning water is discharged from the jet water outlet 7A, the flow path switching valve 52 is switched to supply the cleaning water supplied from the water supply source to the jet water outlet 7A, and the on-off valve 42 is set. The valve is closed and the pump 36 is driven to supply the remaining wash water stored in the tank 35 to the jet water outlet 7A. At this time, the pump 36 is driven so that the flow rate of the cleaning water discharged from the rim water spouting port 4A and the jet water spouting port 7A is equal to or higher than a set value.

  The present invention can be used for flush toilets.

DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Toilet bowl part 3 ... Rim water channel 4A ... Rim water outlet 6 ... Toilet drain channel 7A ... Jet water outlet 5A, 5B, 5C ... Rim side water supply channel (5A ... Rim side water supply tube, 5B ... Rim Side flow path, 5C ... Rim side connection part)
8A, 8B, 8C ... Jet side water supply path (8A ... Jet side water supply pipe, 8B ... Jet side flow path, 8C ... Jet side connection part)
9A, 9B, 9C: Upstream water supply channel (9A: Water supply pipe, 9B: Upstream channel, 9C: Upstream connecting portion)
5A, 5B, 5C, 8A, 8B, 8C, 9A, 9B, 9C ... water supply channel 10, 100, 110, 120, 200, 210 ... toilet flushing device 20 ... valve unit (water supply switching mechanism)
DESCRIPTION OF SYMBOLS 21 ... Jet on-off valve 22 ... Rim on-off valve 23 ... Flow control valve 24 ... Control device 30 ... Accumulator (flow rate amplification mechanism)
33 ... Tank 35, 36 ... Flow rate amplification mechanism (35 ... Tank, 36 ... Pump)

Claims (5)

A toilet bowl, a rim water passage provided at the inner peripheral edge of the upper end opening of the toilet bowl, a rim outlet for discharging wash water along the rim water passage, and continuously downstream of the toilet bowl. A toilet cleaning device for supplying cleaning water to a toilet body having a toilet drainage channel provided and a jet spout for discharging cleaning water toward the downstream side of the toilet drainage channel,
A water supply channel for supplying cleaning water to the rim water spouting port and the jet water spouting port;
When the toilet water is washed by discharging cleaning water from the rim water outlet and the jet water outlet provided in the water supply channel, the water is first discharged from the rim water outlet and then the jet water outlet continuously. A water supply switching mechanism for switching the water supply destination to discharge the wash water from
The cleaning water stored in the tank has a tank that communicates with the water supply channel and stores cleaning water, and the cleaning water discharged from the rim water spouting port and the jet water spouting port has a flow rate equal to or higher than a set value. A toilet cleaning device, comprising: a flow rate amplifying mechanism that discharges a part of the water from the rim water spouting port and the remaining part from the jet water spouting port.   The toilet cleaning device according to claim 1, wherein an initial flow rate of the wash water discharged from the jet water spouting port is larger than a flow rate of the wash water discharged from the rim water discharge port.   The amount of the remaining wash water stored in the tank discharged from the jet outlet is larger than the amount of the part of wash water stored in the tank that discharges from the rim outlet, and the jet outlet The toilet flushing device according to claim 1 or 2, wherein the amount of washing water discharged from the rim is larger than the amount of washing water discharged from the rim spout. The water supply channel is composed of an upstream water supply channel communicating with a water supply source, and a jet-side water supply channel and a rim-side water supply channel formed by branching the downstream end of the upstream water supply channel,
The toilet cleaning device according to any one of claims 1 to 3, wherein the flow rate amplification mechanism communicates with a jet-side water supply channel. The water supply switching mechanism controls the opening and closing valve for the jet that opens and closes the jet side water supply path, the opening and closing valve for the rim that opens and closes the rim side water supply path, and the opening and closing of the opening and closing valve for the jet and the opening and closing valve for the rim. Control device,
The flow rate amplifying mechanism is communicated with the jet side water supply channel upstream of the jet on / off valve, and is provided in the jet side water supply channel upstream of the communicating portion communicating with the flow rate amplifying mechanism, The toilet cleaning device according to claim 4, further comprising a flow rate adjusting valve that allows a flow of a large flow rate to the downstream side of the water supply channel and allows a flow of a small flow rate to the upstream side.

Images