JP2009007854A - Flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush toilet bowl capable of preventing the generation of an unusual sound, water splashes, etc. from being caused during the ejection of water from a rim. <P>SOLUTION: This flush toilet bowl comprises: a bowl section 12; a flush toilet bowl body 2 which is equipped with a rim spout 18 and a jet spout 16; a flushing water supply means 37 for supplying flushing water to the rim spout and a water storage tank; a controller 62 for controlling the flow rate of the flushing water; and a pressurizing pump 22 for supplying the flushing water of the water storage tank to the jet spout 16. The flushing water supply means is equipped with a constant flow valve 32, an electromagnetic on/off-valve 34, and a water supply channel switching valve 36. When receiving a flushing starting signal, the controller 62 firstly switches the water supply channel switching valve 36 so that the flow rate of the flushing water supplied to the water storage tank can be set to be in a range of at least 50-100%, subsequently performs an on/off-valve opening operation, and after that, switches the water supply channel switching valve so that 100% of the flow rate of the flushing water can be supplied to the rim spout. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flush toilet, and more particularly to a flush toilet that is washed with pressurized flush water.

Conventionally, as shown in Patent Document 1, cleaning water is supplied to a bowl portion of a toilet and a trap drainage channel to generate a siphon action, thereby discharging filth in the bowl portion. Jet toilets are known.
In the toilet of Patent Document 1, first, at the start of cleaning of the bowl part, the bowl part flow rate control valve is controlled to supply a small flow of cleaning water to the rim water passage to eliminate air in the rim water passage, Next, a large amount of washing water is supplied to the rim water passage so as to wash the bowl portion.

Japanese Patent No. 2777218

  In such a toilet of Patent Document 1, since the remaining air in the rim water passage is eliminated by supplying a small flow of wash water at the start of cleaning of the bowl portion, suddenly a large flow of wash water is supplied. There is an advantage that it is possible to prevent problems such as splashing of cleaning water generated in such a case.

  However, there is air compressed by a constant flow valve or the like upstream of the open / close valve such as the bowl portion flow control valve, and this compressed air is released at a moment when the open / close valve is opened. As a result, abnormal noise and water splash may occur, and the problems have not been solved. In particular, in the case of a water pipe having a high primary pressure, such as a constant flow valve, the possibility of occurrence of the problem increases.

  Therefore, the present invention has been made to solve the above-described conventional problems, and a flush toilet that can prevent the generation of abnormal noise or water splashing that occurs when rim water is discharged during toilet cleaning. The purpose is to provide.

  In order to solve the above-described problems, the present invention is a flush toilet that is washed with pressurized wash water, and includes a bowl portion, a rim spout and a jet spout for discharging wash water, and a drain trap pipe. A toilet body provided with a road, a water storage tank for storing cleaning water, a cleaning water supply means for supplying cleaning water to the rim water spouting port and the water storage tank, and a rim water spouting port and a water storage tank by the cleaning water supply means. A control means for controlling the flow rate of the cleaning water, and a pressure pump for pressurizing the cleaning water in the water storage tank and supplying the water to the jet water outlet through the jet side water supply channel. A constant flow valve for adjusting to a predetermined flow rate, an on-off valve provided on the downstream side of the constant flow valve, a flow rate of cleaning water supplied to the rim spout and provided on the downstream side of the on-off valve and the storage tank Turn off the flow rate of the supplied cleaning water. The control means is provided with a water supply path switching valve that is adjusted in place, and when the toilet body starts cleaning, when the total flow rate of cleaning water supplied to the rim spout and the water storage tank is 100%, first, the water supply path switching valve , So that the flow rate of the wash water supplied to the water storage tank is at least 50% to 100%, and then the opening / closing valve is opened, and then the water supply channel switching valve is switched to change the flow rate of the wash water. 100% of the water is supplied to the rim spout.

  In the present invention configured as above, the control means first switches the water supply path switching valve at the start of cleaning of the toilet body, and the flow rate of the cleaning water supplied to the water storage tank is at least 50% to 100%. In this state, since the on-off valve is opened, the compressed air existing on the upstream side of the water supply path switching valve can be discharged to the water supply tank. Water splashing from the rim water spouting port can be prevented. Furthermore, after that, the water supply path switching valve is switched so that 100% of the flow rate of the cleaning water is supplied to the rim spout.

In the present invention, preferably, the control means gradually switches the water supply path switching valve so that 100% of the flow rate of the cleaning water is supplied to the rim spout.
In the present invention configured as described above, since the water supply path switching valve is gradually switched so that 100% of the flow rate of the cleaning water is supplied to the rim spout, a large amount of cleaning water is supplied to the rim discharge port. Since the wash water is gradually supplied to the rim spout without being supplied all at once, the air remaining on the downstream side of the water supply channel switching valve can be smoothly discharged from the rim spout, thereby remaining air. It is possible to prevent the generation of abnormal noise and water splashes that occur when the water is discharged at once.

In the present invention, preferably, the control means switches the water supply path switching valve so that the flow rate of the cleaning water supplied to the water storage tank is at least 75% to 100%.
According to the present invention configured as described above, it is possible to more effectively prevent the generation of noise due to compressed air and the splash of water from the rim water spouting port.

In the present invention, preferably, the control means switches the water supply path switching valve so that the flow rate of the cleaning water supplied to the water storage tank becomes 100%.
According to the present invention configured as described above, it is possible to more effectively prevent the generation of noise due to compressed air and the splash of water from the rim water spouting port.

In the present invention, preferably, the control means sets the water supply path switching valve so that the flow rate of the cleaning water supplied to the rim water spouting port is at least 50% to 100% in the standby state before the start of cleaning.
In the present invention configured as described above, even when the on-off valve upstream of the water supply channel switching valve fails, most of the wash water is discharged from the rim spout to the bowl portion, thus preventing overflow of the water storage tank. can do.

In the present invention, preferably, the control means sets the water supply path switching valve so that the flow rate of the cleaning water supplied to the rim water spouting port becomes 100% in the standby state before the start of cleaning.
In the present invention configured as above, even when the on-off valve upstream of the water supply channel switching valve fails, all of the wash water is discharged from the rim spout to the bowl portion, thus preventing overflow of the water storage tank can do.

  According to the flush toilet of the present invention, it is possible to prevent the generation of abnormal noise or splashing of water generated during rim water discharge during toilet flushing.

Next, a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, the structure of a flush toilet according to an embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is a side view of a flush toilet according to an embodiment of the present invention, FIG. 2 is a plan view of the flush toilet shown in FIG. 1, and FIG. 3 is a flush toilet according to an embodiment of the present invention. FIG.

  As shown in FIGS. 1 and 2, the flush toilet 1 according to the embodiment of the present invention is disposed so as to cover the toilet body 2, the toilet seat 4 disposed on the upper surface of the toilet body 2, and the toilet seat 4. The cover 6 and the local washing | cleaning apparatus 8 arrange | positioned at the back upper part of the toilet bowl main body 2 are provided. Further, a functional unit 10 is disposed behind the toilet body 2, and the functional unit 10 is covered with a side panel 11.

The toilet body 2 is formed with a bowl portion 12 for receiving filth, a drain trap pipe 14 extending from the bottom of the bowl portion 12, a jet spout 16 for jet spout, and a rim spout 18 for rim spout. ing.
The jet spout 16 is formed at the bottom of the bowl portion 12, is disposed substantially horizontally toward the inlet of the drain trap pipe 14, and discharges wash water toward the drain trap pipe 14. ing.
The rim water spouting port 18 is formed at the upper left rear of the bowl portion 12 and discharges cleaning water along the upper edge of the bowl portion 12.

The drain trap pipe 14 includes an inlet 14a, a trap ascending pipe 14b that rises from the inlet 14a, and a trap descending pipe 14c that descends from the trap ascending pipe 14b. The trap ascending pipe 14b and the trap descending pipe 14c 14d is the top portion 14d.
Here, a drain pipe 15 is connected to the lower end of the trap descending pipe 14 c of the drain trap pipe 14.

  The flush toilet 1 according to the present embodiment is directly connected to a water supply that supplies cleaning water, and the cleaning water is discharged from the rim spout 18 by the water supply pressure of the water supply. As for the jet water spouting, as will be described later, the washing water stored in the water storage tank 20 built in the functional unit 10 is pressurized by the pressurizing pump 22 and discharged from the jet water spouting port 16 at a large flow rate. It has become.

Next, the functional part 10 of the flush toilet 1 according to the present embodiment will be described in detail with reference to FIG.
As shown in FIG. 3, the functional unit 10 is provided with a water supply path 24 to which cleaning water is supplied from the water supply. A constant flow valve 32, a diaphragm type electromagnetic on-off valve 34, and a water supply path switching valve 36 are provided.

The constant flow valve 32, the electromagnetic on-off valve 34, and the water supply path switching valve 36 are integrally assembled as a valve unit 37, as will be described later.
Further, on the downstream side of the water supply path switching valve 36, there are a rim side water supply path 38 for supplying cleaning water to the rim spout 18 and a tank side water supply path 40 for supplying cleaning water to the water storage tank 20. It is connected.

  Here, the constant flow valve 32 is for restricting the wash water flowing in through the stop cock 26, the strainer 28, and the branch fitting 30 to a predetermined flow rate or less. The wash water that has passed through the constant flow valve 32 flows into the electromagnetic on-off valve 34, and the wash water that has passed through the electromagnetic on-off valve 34 is rimmed from the rim-side water supply path 38, which is the rim side, by the water supply path switching valve 36. It is supplied to the water storage tank 20 from the water outlet 18 or from the tank side water supply path 40 which is the tank side. Here, as will be described in detail later, the water supply path switching valve 36 can supply cleaning water to both the rim side water supply path 38 and the tank side water supply path 40 at the same timing, and is connected to the rim side and the tank side. This is a switching valve that can arbitrarily change the ratio of the amount of water supply (see FIG. 5).

  A pump-side water supply channel 45 is connected to the lower part of the water storage tank 20, and a pressure pump 22 having a pump chamber 22 a is connected to the downstream end of the pump-side water supply channel 45. Further, the pressurizing pump 22 and the jet water spouting port 16 are connected by a jet-side water supply passage 46, and the pressurizing pump 22 pressurizes the cleaning water stored in the water storage tank 20 and supplies it to the jet water spouting port 16. It has become.

  As shown in FIG. 3, the jet-side water supply passage 46 is formed in a convex shape upward, and the top portion 46 a of the convex portion is at the highest position.

Next, the rim-side water supply passage 38 is provided with a rim water discharge vacuum breaker 48 to prevent a reverse flow of the cleaning water from the rim water discharge port 18 when negative pressure is generated in the water supply passage 24. . Further, as shown in FIG. 3, the rim water spouting vacuum breaker 48 is disposed above the upper end surface of the bowl portion 12, thereby reliably preventing backflow. Further, the wash water overflowing from the air release portion of the rim water spouting vacuum breaker 48 flows into the water storage tank 20 through the return pipe 50.
The tank side water supply passage 40 is also provided with a vacuum breaker 42 as a check valve to prevent the backflow of the wash water from the storage tank 20.

  Here, the water storage tank 20 is a sealed type water storage tank, and a ball type check valve 43 is provided at a connection portion between the tank side water supply path 40 and the water storage tank 20. The ball check valve 43 causes the ball 43a to float up and connect to the tank-side water supply channel 40 even when the water storage tank 20 is filled with water after exceeding the position of the upper end 70a of the overflow channel 70 described later. Since the portion is closed, the washing water does not flow back into the tank side water supply path 40.

  Similarly, a ball type check valve 44 is similarly provided at the connecting portion between the return pipe 50 and the water storage tank, and the water storage tank 20 is filled with water beyond the position of the upper end 70a of the overflow channel 70 described later. Even in the state, the washing water does not flow back to the return pipe 50.

  Further, the pump-side water supply passage 45 is provided with a jet water spouting flapper valve 56 and a water drain plug 58 which are check valves. The jet water spouting flapper valve 56 and the water drain plug 58 are arranged at a height near the lower end of the water storage tank 20 below the pressurizing pump 22. For this reason, by opening the water drain plug 58, the cleaning water in the water storage tank 20 and the pressure pump 22 can be discharged during maintenance or the like. Further, by disposing the jet water spouting flapper valve 56 between the water storage tank 20 and the pressurizing pump 22, when the water level in the water storage tank 20 becomes lower than the height of the pressurizing pump 22, washing water is added. The pressure pump 22 flows backward to the water storage tank 20 to prevent the washing water in the pressurizing pump 22 from coming off and the pressurizing pump 22 from idling. A water receiving tray 60 is disposed below the pressurizing pump 22 so as to receive condensed water droplets and water leakage.

  The function unit 10 also includes a controller 62 that controls the opening / closing operation of the electromagnetic opening / closing valve 34, the switching operation of the water supply channel switching valve 36, and the rotation speed and operating time of the pressurizing pump 22.

Inside the water storage tank 20, an upper end float switch 64a and a lower end float switch 64b are arranged.
The upper end float switch 64a is turned on when the water level in the water storage tank 20 reaches a predetermined position L2 that is slightly lower than the highest water level L1 during normal use, and the controller 62 detects this and closes the electromagnetic switching valve 34. .
The lower end float switch 64b is turned on when the water level in the water storage tank 20 drops to a predetermined water level L4 that is slightly higher than the lowest water level L3 during normal use, and the controller 62 detects this and stops the pressurizing pump 22 Let

Furthermore, an overflow channel 70 is provided, and an upper end 70 a of the overflow channel 70 opens into the water storage tank 20, and a lower end 70 b of the overflow channel 70 is connected to the jet-side water supply channel 46.
A flapper valve 72 as a check valve is attached to the overflow channel 70. The overflow flow path 70 and the flapper valve 72 prevent backflow from the jet water outlet 16 of the washing water, and can perform edge cutting between them.

  The controller 62 sequentially operates the electromagnetic on-off valve 34, the water supply path switching valve 36, and the pressurizing pump 22 by the operation of the toilet flushing switch (not shown) by the user, and first discharges water from the rim water spouting port 18 to rim water discharging. Then, water discharge from the jet water discharge port 16 is started, and the bowl portion 12 is washed. Further, after the cleaning is completed, the controller 62 opens the electromagnetic switching valve 34 and switches the water supply path switching valve 36 to the water storage tank 20 side to replenish the water storage tank 20 with cleaning water. When the water level in the water storage tank 20 rises and the upper end float switch 64a detects the specified water storage amount, the controller 62 closes the electromagnetic on-off valve 34 and stops water supply.

  Next, the structure of the valve unit 37 (particularly the water supply channel switching valve 36) will be described in detail with reference to FIGS. FIG. 4 is a partial configuration diagram illustrating a state of water supply on the tank side of a water supply switching valve of a flush toilet according to an embodiment of the present invention, and FIG. 5 illustrates that a water supply switching valve of a flush toilet according to an embodiment of the present invention is a rim. It is a partial block diagram which shows the state which supplies water to both the water outlet side and the water storage tank side.

First, as shown in FIG. 4, the electromagnetic opening / closing valve 34 includes a diaphragm 34a and a solenoid 34b for opening and closing the diaphragm 34a.
The water supply path switching valve 36 includes a first port 36 a that opens to the upstream constant flow valve 32 side, a second port 36 b that opens to the tank side water supply path 40, and a third port 36 c that opens to the rim side water supply path 38. I have. The water supply switching valve 36 includes a rotor (valve element) 36d for switching these ports, and the rotor 36d is driven to a desired position by a stepping motor (not shown) which is a drive motor. ing.

Specifically, in the water supply channel switching valve 36, when the cleaning water is supplied to the water storage tank 20, the third port 36c is closed and the first port 36a and the second port 36b are communicated as shown in FIG. On the other hand, although not shown, when the cleaning water is supplied to the rim spout 18, the second port 36b is closed and the first port 36a and the third port 36c are communicated.
Furthermore, as shown in FIG. 5, in the water supply path switching valve 36, the rotor 36 d closes a part of each of the second port 36 b and the third port 36 c, so that the water supply path 24 is connected to the rim-side water supply path 38. The tank side water supply path 40 can be communicated with both.

  Thus, in this embodiment, the total flow rate of the wash water supplied to the rim water spouting port 18 (rim side) and the water storage tank 20 (water storage tank side) by driving the rotor 36d in the water supply channel switching valve 36. Can be switched in a range from a state in which all cleaning water is supplied to the rim side (100% on the rim side) to a state in which all cleaning water is supplied to the water storage tank side (100% on the water storage tank side). It is like that.

  Next, the washing operation of the flush toilet according to the present embodiment will be described with reference to FIG. FIG. 6 is a time chart showing the washing operation of the flush toilet according to the embodiment of the present invention.

  As shown in FIG. 6, first, in the standby state (time t0 to t1), the water supply path switching valve 36 is in a neutral position communicating with both the rim-side water supply path 38 and the tank-side water supply path 40. That is, the water supply path switching valve 36 is in a state of 50% on the rim side and 50% on the water storage tank side. By setting the neutral position in this way, it is possible to shorten the switching time to the tank side 100% described later.

In this embodiment, in this standby state (time t0 to t1), the water supply channel switching valve 36 may be set to a position on the rim side 50% to 100%.
As described above, by setting the water supply switching valve 36 in the standby state, even when the electromagnetic on / off valve 34 upstream of the water supply path switching valve 36 breaks down, most of the washing water is supplied from the rim spout 18 to the bowl portion 12. Therefore, overflow of the water storage tank 20 can be prevented. In particular, when the rim side is set at a position of 100%, all of the washing water is discharged from the rim water spouting port 18 to the bowl portion 12, so that overflow of the water storage tank 20 can be reliably prevented.

  Next, in this standby state (time t0 to t1), when a toilet flushing switch (not shown) is operated (time t1), that is, when a cleaning start signal is received, front rim water discharge (time t1 to t11) Is started. At this time (time t1), the water supply path switching valve 36 is switched from the neutral position of the rim side 50% water storage tank side 50% to the fully open state (tank side 100%) of the tank side water supply path 40 at time t2. This state is maintained for ~ t3 (0.2 seconds).

  Next, when the water supply path switching valve 36 reaches 100% on the tank side, that is, at time t2, the electromagnetic on-off valve 34 is turned ON to allow the cleaning water to flow into the water supply path 24. Thereby, the compressed air remaining in the water supply path 24 on the upstream side of the water supply switching valve 36 can be discharged into the water storage tank 20. As a result, it is possible to prevent the generation of abnormal noise (discharge sound) of air from the rim water spouting port 18 and the splashing of water that occur when the water supply switching valve 36 is suddenly switched to the rim-side water supply path 38 that is the rim side. it can.

Here, in the present embodiment, at time t2, the water supply path switching valve 36 may be switched in the range of 50% to 100% on the water tank side, or the water supply path in the range of 75% to 100% on the water tank side. The switching valve 36 may be switched.
In this case, the larger the amount of cleaning water supplied to the water storage tank, the more effectively the generation of abnormal noise (discharge sound) from the rim water spouting port 18 and water splashing can be effectively prevented.

  Next, during time t3 to t4, the water supply switching valve 36 is gradually switched from the tank side fully open position (water storage tank side 100%) to the rim side fully open position (rim side 100%), and the cleaning water is supplied to the rim spout 18. A small amount of water is supplied to the rim, and the cleaning water is discharged from the rim spout 18. As a result, the cleaning water is gradually supplied to the rim water spouting port 18 without supplying a large amount of cleaning water to the rim discharge port 18 at a stretch, so that the inside of the rim side water supply channel 38 on the downstream side of the water supply channel switching valve 36. It is possible to smoothly discharge the air remaining in the rim water spouting port 18, thereby preventing the generation of abnormal noise and water splashing that occur when the residual air is discharged at a stretch.

  Next, after a predetermined time (for example, 5 seconds) has elapsed from time t2, between time t5 and t11, in order to perform jet water discharge, the pressure pump 22 is turned on, and the pressure pump 22 is stored in the water storage tank 20. The cleaning water is supplied to the jet water outlet 16 and the cleaning water is discharged from the jet water outlet 16.

At the time of jet water discharge, the controller 62 controls the rotation speed of the pressure pump 22 as follows.
First, the pressurizing pump 22 is held at a relatively low speed (for example, 1000 rpm) from time t6 to t7, whereby the vicinity of the top portion 46a of the jet side water supply passage 46 (that is, above the water surface of the bowl portion 12). The air residing in the portion located at (3) is slowly discharged from the jet spout 16. As a result, it is possible to prevent the generation of air discharge sound from the jet water spouting port 16 that occurs when the pressurizing pump 22 is suddenly started at a high speed.

  Next, at time t8 to t9, the pressurizing pump 22 is rotated at a high speed (for example, 3500 rpm). Thereby, the pressurizing force by the pressurizing pump 22 is increased, and a large amount of washing water is discharged from the jet water outlet 16. At this time, since the rim water spouting is continuously performed from the rim water spouting port 18, the flow rate of the cleaning water discharged from the rim water spouting port 18 is added, and the large amount of the washing water flows into the inlet portion 14 a of the drain trap pipe 14. The siphon phenomenon is rapidly caused, and the accumulated water and dirt in the bowl portion 12 are quickly discharged. At this time, the flow rate (first flow rate) flowing into the inlet portion 14a of the drain trap pipe 14 is 75 liters / minute to 120 liters / minute, which is the sum of the flow rate due to the rim water discharge and the flow rate due to the jet water discharge. The flow rate is larger than that.

  Next, at time t9 to t11, in order to set the flow rate (second flow rate) of the cleaning water flowing into the inlet 14a of the drain trap pipe 14 to be smaller than the above flow rate (first flow rate). The rotational speed of the pressure pump 22 is slightly reduced. In the example of FIG. 5, the rotational speed of the pressurizing pump 22 is decelerated in two stages (for example, 3300 rpm and 3200 rpm) in order to cause the second flow rate to flow into the inlet 14 a of the drain trap pipe 14. ing. At this time, the rotation speed of the pressurizing pump 22 may not be changed in one step, and may be decelerated to three or more steps.

  In this way, immediately before the siphon phenomenon generated by the first flow rate ends (time t9), the cleaning water having a second flow rate smaller than the first flow rate flows into the inlet portion 14a of the drain trap pipe 14. Therefore, it is possible to generate a flow rate at which filth can be carried out and seal the cross section of any part of the drain trap pipe 14 to continue the siphon action.

  Next, when the water level of the washing water in the water storage tank 20 decreases and the lower end float switch 64b is turned on at time t11, the operation of the pressurizing pump 22 is stopped. At this time, the rotation speed of the pressurizing pump 22 is slowly reduced from time t11 to time t12 so that water discharged from the jet water outlet 16 is gradually reduced. As a result, it is possible to prevent the occurrence of a siphon break sound that occurs due to a sudden interruption of the siphon action.

At time t11, jet water spouting is completed, but at this time, rim water spouting is still continued, and rim water spouting (rear rim water spouting) is continued for a predetermined time (for example, 4 seconds) from time t11 to time t13. .
Thereafter, at time t13 to t14, the water supply path switching valve 36 is switched from the rim side full open to the tank side full open. As a result, the wash water is stored in the water storage tank 20.
Next, at time t15, when the water level in the water storage tank 20 rises, the upper end float switch 64a is turned on, whereby the electromagnetic on-off valve 34 is turned off (closed operation), and the cleaning water is stored in the water storage tank 20. Inflow is stopped.

  Next, at time t16, the water supply switching valve 36 returns to the neutral position communicating with both the rim side and the tank side, and returns to the standby state (the same state as time t0).

1 is a side view of a flush toilet according to an embodiment of the present invention. It is a top view of the flush toilet shown in FIG. 1 is an overall configuration diagram showing a flush toilet according to an embodiment of the present invention. It is a partial block diagram which shows the state of the tank side water supply of the water supply switching valve of the flush toilet by embodiment of this invention. It is a partial block diagram which shows the state in which the water supply path switching valve of the flush toilet by embodiment of this invention supplies water to both the rim spout side and the water storage tank side. It is a time chart which shows the washing | cleaning operation | movement of the flush toilet bowl by embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 10 Functional part 12 Bowl part 14 Drain trap pipe 16 Jet water outlet 18 Rim water outlet 20, 80 Reservoir tank 22 Pressure pump 24 Water supply path 32 Constant flow valve 34 Electromagnetic switching valve 36 Water supply path switching Valve 38 Rim side water supply path 40 Tank side water supply path 43, 44 Ball type check valve 45 Pump side water supply path 46 Jet side water supply path 62 Controller 64a Upper end float switch 64b Lower end float switch 70 Overflow path

Claims (6)

A flush toilet flushed with pressurized flush water,
A toilet body including a bowl portion, a rim spout and a jet spout for discharging washing water, and a drain trap conduit;
A water storage tank for storing cleaning water;
Cleaning water supply means for supplying cleaning water to the rim spout and the water storage tank;
Control means for controlling the flow rate of the wash water to the rim water spouting port and the water storage tank by the wash water supply means;
A pressurizing pump that pressurizes the wash water of the water storage tank and supplies it to the jet water outlet through a jet-side water supply channel;
The washing water supply means includes a constant flow valve for adjusting the washing water to a predetermined flow rate, an on-off valve provided on the downstream side of the constant flow valve, provided on the downstream side of the on-off valve, and connected to the rim water spouting port. Provided with a water supply path switching valve that switches and adjusts the flow rate of wash water supplied and the flow rate of wash water supplied to the water storage tank,
When the total flow rate of cleaning water supplied to the rim water spouting port and the water storage tank is set to 100% at the start of cleaning of the toilet body, the control means first switches the water supply path switching valve to the water storage tank. The flow rate of the supplied wash water is set to at least 50% to 100%, then the opening / closing valve is opened, and then the water supply path switching valve is switched so that 100% of the flow rate of the wash water is rim. A flush toilet characterized by being supplied to a spout.   The flush toilet according to claim 1, wherein the control means gradually switches the water supply path switching valve so that 100% of the flow rate of the wash water is supplied to the rim spout.   The flush toilet according to claim 1 or 2, wherein the control means switches the water supply channel switching valve so that the flow rate of the wash water supplied to the water storage tank is at least 75% to 100%.   The flush toilet according to claim 1 or 2, wherein the control means switches the water supply channel switching valve so that the flow rate of the washing water supplied to the water storage tank becomes 100%.   5. The control unit according to claim 1, wherein the control unit sets the water supply path switching valve so that a flow rate of the cleaning water supplied to the rim water spouting port is at least 50% to 100% in a standby state before the start of cleaning. The flush toilet according to any one of claims.   5. The control unit according to claim 1, wherein, in a standby state before the start of cleaning, the water supply path switching valve is set so that a flow rate of the cleaning water supplied to the rim water spouting port becomes 100%. The flush toilet described.

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