JP6029725B2 - Toilet bowl cleaning device - Google Patents

Description

  The present invention relates to a toilet bowl cleaning device.

  FIG. 2 of Patent Document 1 discloses a conventional toilet cleaning device. This toilet bowl cleaning device supplies cleaning water to the toilet bowl body. The toilet body is continuous with the toilet bowl, a rim water passage provided at the inner peripheral edge of the upper end opening of the toilet bowl, a rim water outlet for discharging washing water into the rim water passage, and downstream of the toilet bowl. And a jet spout for discharging washing water toward the downstream side of the toilet drainage channel. This toilet bowl cleaning apparatus includes a rim water supply channel that supplies cleaning water to the rim water spouting port and a jet water supply channel that supplies cleaning water to the jet water spouting port. A pressurized tank is connected to the jet water supply channel. The pressurized tank can store the cleaning water in a pressurized state by the hydrostatic pressure of tap water that stores the cleaning water in the pressurized tank.

  This pressurized tank can feed pressurized wash water to the jet spout. Further, the pressurized tank can also supply pressurized washing water to the rim spout. As described above, this toilet flushing apparatus can supply flush water stored in a pressurized tank in a pressurized state to the rim water spouting port and the jet water spouting port. Wash water can be spouted vigorously into waterways and toilet drainage channels.

Japanese Patent Laid-Open No. 11-148162

  However, the toilet cleaning device of Patent Document 1 supplies cleaning water from the pressurized tank to the rim water spouting port and the jet water spouting port at a substantially constant pressure. For this reason, in the process of toilet flushing, the water flow of the wash water discharged from the rim water discharge port and the jet water discharge port becomes substantially constant, and the water force cannot be adjusted as appropriate.

  When the toilet bowl is washed with a small amount of washing water, the toilet bowl can be satisfactorily washed by increasing the flow rate of the washing water. In other words, by sending the pressurized washing water in the pressurized tank to the jet spout, the flow rate can be increased even with a small amount of water, and the filth in the toilet drainage can be transported satisfactorily with the water flow. On the other hand, if the pressure of the wash water in the pressurized tank is too high, there is a risk that the wash water discharged from the rim spout will scatter from the toilet bowl and the sound during rim washing may increase. . As described above, in this toilet cleaning device, if the amount of toilet cleaning water is reduced, toilet cleaning may not be performed satisfactorily. Moreover, in this toilet bowl washing | cleaning apparatus, since wash water cannot be pressurized more than the hydrostatic pressure of tap water, there exists a possibility that toilet bowl washing cannot be performed favorably in the place where the hydrostatic pressure of tap water is low.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the toilet bowl washing | cleaning apparatus which can perform toilet bowl washing | cleaning satisfactorily with a small amount of washing water.

The toilet bowl cleaning device of the present invention comprises:
A toilet bowl, a rim water passage provided at the inner peripheral edge of the upper end opening of the toilet bowl, a rim water outlet for discharging washing water into the rim water passage, and a toilet provided continuously downstream of the toilet bowl A toilet cleaning device for supplying cleaning water to a toilet body having a drainage channel and a jet spout for discharging cleaning water toward the downstream side of the toilet drainage channel,
A first 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 spouting port and the jet water spouting port, the first rim cleaning for discharging the washing water from the rim water spouting port is first performed. A water supply switching mechanism for switching the water supply destination so as to perform jet cleaning for discharging cleaning water from the jet water spouting port continuously.
A main waterway communicating with the water supply source;
A tank that communicates with the first water supply channel on the upstream side of the water supply switching mechanism and stores wash water supplied from the water supply source via the main water supply channel ;
A water supply mechanism capable of supplying the cleaning water stored in the tank to the water supply switching mechanism and changing the flow rate of the cleaning water to be supplied at that time ,
An on-off valve provided in the main water supply channel;
A three-way valve provided in the main water supply channel downstream from the on-off valve;
A second water supply path that communicates with one outlet of the three-way valve, and supplies wash water from the water supply source to the rim spout without passing through the water supply switching mechanism, the tank, and the water supply mechanism;
It is characterized by having.

  Since this toilet bowl cleaning device can change the flow rate of the wash water that the water supply mechanism sends to the water supply switching mechanism, the flow rate of the wash water discharged from the rim spout and the jet spout is adjusted to wash the small amount of water. The toilet bowl can be washed most efficiently with water. That is, when supplying wash water from a water pipe to a tank, this toilet flushing apparatus can perform toilet flushing most efficiently even when the flow pressure of the tap water is low.

  Therefore, the toilet bowl cleaning device of the present invention can satisfactorily wash the toilet bowl with a small amount of cleaning water.

  The water supply mechanism can change the flow rate of the cleaning water supplied to the water supply switching mechanism between the first rim cleaning and the jet cleaning. In this case, the water supply switching mechanism can supply cleaning water having an optimum flow rate during the first rim cleaning and the jet cleaning. For this reason, this toilet bowl washing | cleaning apparatus can perform toilet bowl washing | cleaning favorably with the small amount of washing water.

  The water supply mechanism can increase the flow rate of the cleaning water supplied to the water supply switching mechanism during the jet cleaning than during the first rim cleaning. In this case, by increasing the flow rate of the wash water sent to the water supply switching mechanism at the time of jet cleaning, the flow rate of the wash water discharged from the jet spout increases, and the sewage in the toilet drainage channel is good due to the water flow. Can be conveyed. On the other hand, the flow rate of the cleaning water supplied to the water supply switching mechanism at the time of the first rim cleaning is such that the cleaning water is sent to the end portion of the rim water passage so as to wash off dirt attached to the surface of the toilet bowl portion. Adjust to the extent that washing water is reliably supplied to the entire surface of the plate. Thus, this toilet bowl washing | cleaning apparatus can perform toilet bowl washing | cleaning favorably with the small amount of washing water.

  The water supply mechanism may increase the flow rate of the cleaning water supplied to the water supply switching mechanism during the first rim cleaning than the flow rate of the cleaning water supplied from the water supply source to the tank. In this case, even if the supply pressure of the supply source of the cleaning water supplied to the tank is low, the flow rate of the cleaning water supplied to the water supply switching mechanism is increased by the water supply mechanism, and the cleaning water is discharged from the rim spout. be able to. Thereby, this toilet bowl washing | cleaning apparatus can send washing water to the terminal part of a rim water passage, can supply washing water to the whole surface of a toilet bowl part, and can perform toilet bowl washing | cleaning satisfactorily.

The toilet bowl cleaning device includes a second water supply channel that supplies cleaning water from the water supply source to the rim spout without passing through the tank, the water supply mechanism, and the water supply switching mechanism . In this case, after executing the jet cleaning , the toilet cleaning device supplies cleaning water from the water supply source to the rim water spouting port via the second water supply channel, and discharges the cleaning water from the rim water spouting port. Perform a second rim wash . In the second rim cleaning, the cleaning water can be discharged from the rim spout by the water supply pressure of the water supply source, and the cleaning water can be stored and covered in the toilet bowl. What is necessary is just to store the wash water of a predetermined amount of water in a toilet bowl part so that covering water may not be drained from a toilet drainage channel. For this reason, even if the water supply pressure of the water supply source is low, the flush water can be supplied to and covered with the toilet bowl through the second water supply channel.

  The water supply mechanism may reduce the flow rate of cleaning water supplied to the water supply switching mechanism at the end of the jet cleaning. In this case, since the flow rate of the wash water discharged from the jet spout decreases, the water flow of the wash water discharged from the jet spout weakens, and the wash water does not drain from the toilet drainage channel and remains in the toilet bowl. Can be covered with water.

It is the schematic which shows the toilet bowl main body provided with the toilet bowl washing | cleaning apparatus of the reference example 1. FIG. It is the schematic which shows the toilet bowl washing | cleaning apparatus of the reference example 1. In the toilet bowl cleaning apparatus of Reference Example 1, A1 shows a change in the flow rate of the wash water fed from the pump to the first three-way valve, and B is a graph showing a change in the flow rate of the wash water supplied from the main water supply channel to the tank. In the toilet bowl cleaning device of Reference Example 2, A2 shows a change in the flow rate of the wash water supplied from the pump to the first three-way valve, and B shows a graph showing a change in the flow rate of the wash water supplied from the main water supply channel to the tank. It is the schematic which shows the toilet bowl washing | cleaning apparatus of Example 1. FIG.

A first embodiment of the toilet cleaning device of the present invention and Reference Examples 1 and 2 will be described with reference to the drawings.

< Reference Example 1>
The toilet bowl cleaning apparatus of Reference Example 1 supplies cleaning water to the toilet bowl body 10 as shown in FIGS. 1 and 2. The toilet body 10 includes a toilet bowl 11, a rim water passage 12 provided at the inner peripheral edge of the upper end opening of the toilet bowl 11, and a toilet drainage path provided continuously downstream from the lower end of the toilet bowl 11. 13. The toilet drainage channel 13 includes an ascending channel 13A that rises along the rear surface of the rear part of the toilet bowl 11, and a descending channel 13B that is bent from the top of the ascending channel 13A and extends vertically downward. Yes. The toilet drainage channel 13 is inserted in a watertight manner through the lower end opening of the descending channel 13B into the upper end opening of the connector 14. The connector 14 is connected in a watertight manner to the inlet of a drain pipe (not shown) whose lower end opening is drawn out to the floor F where the toilet body 10 is installed.

  The toilet body 10 has a rim spout 15 </ b> A that discharges wash water to the rim water passage 12. The rim spout 15 </ b> A is formed at the tip of the rim nozzle 15. The rim nozzle 15 is disposed so as to discharge cleaning water from the rim water spouting port 15 </ b> A toward the rim water passage 12 from the left and right rear portions in the toilet body 10. For this reason, the wash water discharged from the rim water spouting port 15 </ b> A flows downward in the toilet bowl 11 while flowing in one direction through the rim water passage 12, and forms a swirling flow in the toilet bowl 11.

  The toilet body 10 has a jet spout 16 </ b> A that discharges wash water toward the downstream side of the toilet drainage channel 13. The jet water spouting port 16 </ b> A is formed at the tip of the jet nozzle 16. The jet nozzle 16 is attached to the lower end portion of the ascending flow path 13A of the toilet drainage channel 13 so as to discharge cleaning water along the ascending flow path 13A. For this reason, the wash water discharged from the jet spouting port 16A flows in the toilet drainage channel 13 along the ascending channel 13A, and generates a siphon action in the toilet drainage channel 13 while conveying filth and the like.

  The toilet body 10 has a toilet seat and a toilet lid (not shown) attached to the upper end surface of the toilet bowl 11.

  The toilet bowl cleaning apparatus includes a rim water supply path 20R, a jet water supply path 20J, and an upstream water supply path 21 that are first water supply paths that supply cleaning water to the rim water discharge port 15A and the jet water discharge port 16A. The downstream end of the rim water supply path 20 </ b> R communicates with the rim nozzle 15. The downstream end of the jet water supply path 20 </ b> J communicates with the jet nozzle 16.

  The toilet bowl cleaning device includes a first three-way valve 30 that is a water supply switching mechanism provided in the first water supply channel. The first three-way valve 30 has one inflow port 30A and two outflow ports 30R, 30J, and switches the supply destination of the wash water in two directions. One outlet 30R of the first three-way valve 30 communicates with the upstream end of the rim water supply path 20R, and the other outlet 30J communicates with the upstream end of the jet water supply path 20J. The downstream end of the upstream water supply passage 21 communicates with the inlet 30A of the first three-way valve 30. When the first three-way valve 30 performs toilet flushing, first, the flush water flows out from one outlet 30R to the rim water supply channel 20R. Then, after the set time has elapsed, the first three-way valve 30 switches so that the washing water flows out from the other outlet 30J to the jet water supply channel 20J.

  The toilet bowl cleaning device includes a tank 50 that communicates with the upstream end of the upstream water supply channel 21 and stores cleaning water. Washing water is supplied to the tank 50 from a main water supply channel 51 communicating with a water pipe that is a water supply source. The tank 50 is disposed in a cavity surrounded by the side surface of the toilet body 10. An open / close valve 52 is provided in the main water supply channel 51. The on-off valve 52 opens when toilet flushing is started, and closes when a set amount of water is supplied into the tank 50.

  The toilet bowl cleaning device includes a pump 40 that is a water supply mechanism connected to the upstream water supply channel 21. The pump 40 can control the rotation speed. For this reason, the flow volume of the wash water sent from the pump 40 can be changed as appropriate.

  Next, a toilet cleaning process using the toilet cleaning device configured as described above will be described.

[First rim cleaning]
After the user of the toilet body 10 uses the toilet, the toilet cleaning is started by operating a remote controller of a toilet cleaning device (not shown). Then, the on-off valve 52 is opened and the pump 40 is driven at the set rotation speed R1. At this time, the first three-way valve 30 is switched so that the washing water flows from the one outlet 30R to the rim water supply channel 20R. For this reason, washing water is sent from the pump 40 to the first three-way valve 30 at a flow rate S1. This washing water is discharged at a flow rate S1 from the rim spouting port 15A via the first three-way valve 30. In this way, the first rim cleaning is executed. The graph shown by the wavy line A1 in FIG. 3 is a change in the flow rate of the washing water sent from the pump 40 to the first three-way valve 30, and the graph shown by the solid line B in FIG. 3 is the main water supply channel communicating with the water supply source water pipe. This is a flow rate change of the cleaning water supplied from 51 to the tank 50.

  In performing the first rim cleaning, as shown in FIG. 3, even if the flow pressure of tap water is low and the flow rate S4 of cleaning water supplied from the main water supply channel 51 to the tank 50 is small, the rotational speed of the pump 40 is set. By controlling, the flow rate S1 of the wash water fed from the pump 40 to the first three-way valve 30 can be made larger than the flow rate S4 of the wash water supplied from the main water supply channel 51 to the tank 50. For this reason, the wash water discharged from the rim spout 15A during the first rim wash can be sent to the end of the rim water passage 12 and supplied to the entire surface of the toilet bowl 11. Thereby, the filth etc. which adhered to the surface of the toilet bowl part 11 can be washed off reliably, and toilet bowl washing | cleaning can be performed favorably.

[Jet cleaning]
When t1 time elapses after the toilet cleaning is started, the first three-way valve 30 is switched so that the washing water flows out from the other outlet 30J to the jet water supply channel 20J. Further, the pump 40 is driven at the set rotation speed R2. Thus, the wash water is sent from the pump 40 to the first three-way valve 30 at the flow rate S2. This wash water is discharged from the jet water outlet 16A through the first three-way valve 30 at a flow rate S2. In this way, jet cleaning is performed.

  The flow rate S2 of cleaning water discharged from the jet water spouting port 16A is larger than the flow rate S1 of cleaning water discharged from the rim water discharging port 15A during the first rim cleaning. In this way, by increasing the flow rate S2 of the wash water discharged from the jet water discharge port 16A, the filth in the toilet drainage channel 13 can be transported satisfactorily by the water force. Further, a siphon action can be generated in the toilet drainage channel 13. Thus, this toilet bowl washing | cleaning apparatus can perform toilet bowl washing | cleaning most efficiently with the small amount of washing water by adjusting the flow volume of the washing water discharged from the rim water spouting port 15A and the jet water spouting port 16A.

Therefore, the toilet bowl cleaning apparatus of Reference Example 1 can satisfactorily wash the toilet bowl with a small amount of cleaning water.

[Second rim cleaning]
When t2 time elapses after the toilet cleaning is started, the first three-way valve 30 is switched so that the wash water flows out from the one outlet 30R to the rim water supply channel 20R. Further, the pump 40 is driven at the set rotation speed R3. For this reason, washing water is sent from the pump 40 to the first three-way valve 30 at a flow rate S3. This washing water is discharged at a flow rate S3 from the rim water spouting port 15A via the first three-way valve 30. In this way, the second rim cleaning is performed.

  When t3 time elapses after the toilet cleaning is started, the pump 40 is stopped, the supply of cleaning water from the pump 40 to the first three-way valve 30 is stopped, the second rim cleaning is ended, and the toilet cleaning is ended. A predetermined amount of washing water is stored in the toilet bowl 11 by the washing water supplied to the toilet bowl 11 at the time of the second rim washing, and can be covered with water.

  When the toilet cleaning is started and t4 time elapses, the on-off valve 52 is closed. Thereby, the wash water of the amount of water set in the tank 50 can be stored, and the toilet bowl washing | cleaning apparatus will be in the standby state which can perform the next toilet bowl washing | cleaning.

< Reference Example 2>
The toilet bowl cleaning apparatus of Reference Example 2 is different from Reference Example 1 in that the toilet cleaning is terminated without executing the second rim cleaning after the first rim cleaning and the jet cleaning are performed. Other configurations are the same as in Reference Example 1, the detailed description the same reference numerals are assigned to the same configuration as Example 1 is omitted.

As shown in FIG. 4, the toilet bowl cleaning device of Reference Example 2 decreases the rotational speed of the pump 40 to the set rotational speed R5 at the end of the jet cleaning (after the time t5 has elapsed since the toilet cleaning started). To drive. Accordingly, the cleaning water is sent from the pump 40 to the first three-way valve 30 at a flow rate S5. The washing water is discharged from the jet water outlet 16A through the first three-way valve 30 at a flow rate S5. As described above, since the washing water discharged from the jet water outlet 16A is weakened, the washing water is not drained from the toilet drainage channel 13 and can remain in the toilet bowl 11 to cover the water.

<Example 1 >
In the toilet bowl cleaning apparatus according to the first embodiment, the second rim cleaning performed after the first rim cleaning and the jet cleaning are performed includes the tank 50, the water supply mechanism (pump 40), and the water supply switching mechanism (first three-way valve 30). It differs from Reference Example 1 in that the cleaning water is supplied from the water supply source to the rim water spouting port 15A via the second water supply path without being interposed. Other configurations are the same as in Reference Example 1, the detailed description the same reference numerals are assigned to the same configuration as Example 1 is omitted.

As shown in FIG. 5, the toilet bowl cleaning apparatus according to the first embodiment is a main water supply channel 51 that communicates with a water pipe that is a water supply source, and has a second three-way on the downstream side of the on-off valve 52 and the upstream side of the tank 50. A valve 60 is provided. The second three-way valve 60 has one inflow port 60A and two outflow ports 60R and 60T, and switches the supply destination of the wash water in two directions. One outlet 60R of the second three-way valve 60 communicates with the upstream end of the second water supply path 53 that communicates with the middle portion of the rim water supply path 20R, and the other outlet 60T communicates with the main water supply path that communicates with the tank 50. 51 communicates. The second water supply path 53 is provided with a check valve 54 so that the washing water does not flow backward from the downstream side to the upstream side.

In the toilet bowl cleaning device configured as described above, when the first rim cleaning and the jet cleaning are executed, the second three-way valve 60 is supplied to the tank 50 through the main water supply channel 51 from the other outlet 60T. Has been switched to spill. Therefore, the toilet cleaning device, in the same manner as in Reference Example 1, the first rim flush, and jet cleaning are performed.

  In this toilet bowl cleaning device, after the jet cleaning is performed, the second three-way valve 60 is switched so that the cleaning water flows out from the one outlet 60R to the second water supply channel 53. For this reason, in this toilet bowl cleaning apparatus, in the second rim cleaning, the cleaning water is discharged from the rim spout 15A by the supply pressure of tap water. What is necessary is just to store washing water of the predetermined amount of water in the toilet bowl part 11 so that covering water may not be drained from the toilet bowl drainage channel 13. For this reason, even if the supply pressure of the tap water is low, the flush water can be supplied to the toilet bowl 11 through the second water supply channel 53 to cover it.

The present invention is not limited to the first embodiment 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 Example 1, had switched water supply destination of the washing water is water from the pump by a first three-way valve, it may be another water supply switching mechanism. For example, the upstream water supply channel is branched into a rim-side water supply channel and a jet-side water supply channel, and an opening / closing valve is provided in each of the rim-side water supply channel and the jet-side water supply channel, and the opening and closing of these opening / closing valves is controlled. The water supply destination may be switched.
In (2) Example 1, when the first rim flush, and the rotational speed of the pump constant, although the flow rate of flush water spouted from the rim water spouting port as a constant, the first rim flush You may change the rotation speed of a pump between.
(3) In the Example 1, it was placed a tank surrounded by cavities in the side surface of the toilet body may be disposed on the outside of the toilet body.

  The present invention can be used for flush toilets.

DESCRIPTION OF SYMBOLS 10 ... Toilet body 11 ... Toilet bowl part 12 ... Rim water channel 13 ... Toilet drain channel 15A ... Rim water outlet 16A ... Jet water outlet 20R, 20J, 21 ... First water supply channel (20R ... Rim water supply channel, 20J ... Jet water supply Road, 21 ... Upstream water supply channel)
30 ... First three-way valve (water supply switching mechanism)
40 ... Pump (water supply mechanism)
50 ... Tank
51 ... Main waterway
52 ... Open / close valve 53 ... Second water supply channel
60 ... Second three-way valve (three-way valve)

Claims (1)

A toilet bowl, a rim water passage provided at the inner peripheral edge of the upper end opening of the toilet bowl, a rim water outlet for discharging washing water into the rim water passage, and a toilet provided continuously downstream of the toilet bowl A toilet cleaning device for supplying cleaning water to a toilet body having a drainage channel and a jet spout for discharging cleaning water toward the downstream side of the toilet drainage channel,
A first 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 spouting port and the jet water spouting port, the first rim cleaning for discharging the washing water from the rim water spouting port is first performed. A water supply switching mechanism for switching the water supply destination so as to perform jet cleaning for discharging cleaning water from the jet water spouting port continuously.
A main waterway communicating with the water supply source;
A tank that communicates with the first water supply channel on the upstream side of the water supply switching mechanism and stores wash water supplied from the water supply source via the main water supply channel ;
A water supply mechanism capable of supplying the cleaning water stored in the tank to the water supply switching mechanism and changing the flow rate of the cleaning water to be supplied at that time ,
An on-off valve provided in the main water supply channel;
A three-way valve provided in the main water supply channel downstream from the on-off valve;
A second water supply path that communicates with one outlet of the three-way valve, and supplies wash water from the water supply source to the rim spout without passing through the water supply switching mechanism, the tank, and the water supply mechanism;
A toilet bowl cleaning device comprising:

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