JP2018100574A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet that, when supplying cleaning water to a toilet bowl from a water tank, suppresses variation in an amount of the cleaning water to be supplied to the toilet bowl from the water tank either in large washing or in small washing.SOLUTION: In this water closet, when a user operates a toilet bowl cleaning switch to select small washing, firstly after starting a supply of cleaning water to a jet water discharge port 16 from a water tank 20, detecting a water level in the water tank 20 is conducted with an upper float switch 64a until the water level reaches a water level L1 and next timer control is performed with respect to a water level drop from the water level L1. By means of the timer control, a controller 62 stops activation of a pressure pump 22 so that a dead water level in the water tank reaches a dead water level WDL2 and the supply of the cleaning water to the jet water discharge port 16 from the water tank 20 is stopped.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a flush toilet, and more particularly, to a flush toilet equipped with a water storage tank for storing flush water supplied to the toilet.

  In recent years, flush toilets have been known in which flush water in a storage tank is supplied to the toilet bowl.

JP 2009-2075 A

  In flush toilets such as Patent Document 1, when the lower float switch is switched from the ON state to the OFF state after the supply of the wash water from the water storage tank to the toilet bowl, the flushing from the storage tank to the toilet bowl is performed. It is configured to stop the water supply. However, in the case of a flush toilet that can select either large washing with a large amount of washing water supplied to the toilet or small washing with little washing water supplied to the toilet, the dead water level can be detected by the lower float switch in the large washing. Since the water level is lower than the water level, the supply of wash water from the water storage tank to the toilet can be stopped according to the detection of the lower float switch, but in small washing, the dead water level is higher than the detectable water level of the lower float switch. Control of the wash water supply from the water storage tank to the toilet based on the detection of the lower float switch cannot be performed. Therefore, in such a case, in the small washing, a method of controlling the supply of the wash water from the water storage tank to the toilet bowl by performing timer control from the start of the supply of the wash water from the water storage tank to the toilet bowl is generally used.

  However, when the cleaning water supply is controlled by the timer control, there is a possibility that the amount of the cleaning water supplied from the water storage tank to the toilet bowl may vary due to the influence of the manufacturing error of the toilet bowl.

  The present invention has been made in order to solve the above-described problems. When washing water is supplied from a water storage tank to a toilet bowl, the water is supplied from the water storage tank to the toilet bowl in both large washing and small washing. An object of the present invention is to provide a flush toilet that suppresses variations in the amount of washing water.

  A flush toilet according to one aspect of the present invention includes a toilet body, a water storage tank that stores cleaning water supplied to the toilet body, and a cleaning water supply unit that supplies cleaning water in the water storage tank to the toilet body. An upper water level detecting means for detecting a water level in the water storage tank when the wash water is supplied to the water storage tank provided below the water stop water level in the water storage tank, and the upper side in the water storage tank. A lower water level detecting means that is provided below the water level detecting means and detects a water level in the water storage tank when cleaning water is supplied from the water storage tank to the toilet body. Control means for controlling the washing water supply means to adjust the total amount of washing water supplied from the water storage tank to the toilet body according to the selection of large washing or small washing. And a flush toilet, wherein, said during full flushing and during the partial flushing, and controls the cleaning water supply means based on detection by the water level detecting means.

  According to this configuration, since the washing water supply unit is controlled based on the detection by the water level detection unit in both the large washing and the small washing, the amount of the washing water supplied from the water storage tank to the toilet bowl varies. It can suppress that it arises.

  In the flush toilet according to one aspect of the present invention, it is preferable that the control unit is configured to pass a predetermined time after the upper water level detecting unit detects a decrease in the water level in the water storage tank during the small washing. The supply of washing water from the water storage tank to the toilet body is stopped.

  According to this configuration, at the time of small washing, since the washing water supply means is controlled based on the water level detection in the water storage tank by the upper water level detection means, the amount of washing water supplied from the water storage tank to the toilet varies. Can be prevented from occurring.

  In the flush toilet according to one aspect of the present invention, preferably, the lower water level detection means is provided above a dead water level in the water storage tank at the time of the small washing, and the control means is at the time of the small washing. When the lower water level detecting means detects the lowering of the water level in the water storage tank, the supply of the washing water from the water storage tank to the toilet body is stopped.

  According to this configuration, since the washing water supply means is controlled based on the detection by the lower water level detection means in both large washing and small washing, the amount of washing water supplied from the water storage tank to the toilet varies. Can be prevented from occurring.

  According to the present invention, when cleaning water is supplied from the water storage tank to the toilet bowl, there is a variation in the amount of cleaning water supplied from the water storage tank to the toilet bowl in both large washing and small washing. A controlled flush toilet.

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 a first embodiment of the present invention. It is the flowchart explaining from the toilet bowl start of the flush toilet according to 1st Embodiment of this invention until the tank water supply start. 1 is an overall configuration diagram showing a flush toilet according to a first embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.

  First, the structure of a flush toilet according to an embodiment of the present invention will be described with reference to FIGS. 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. FIG. 3 is an overall configuration diagram showing the flush toilet according to the first embodiment of the present invention.

  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 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 includes a bowl portion 12 for receiving filth, a drain trap pipe 14 extending from the bottom of the bowl section 12, a drain pipe 15 connected to the lower end of the drain trap pipe 14, and a jet for jetting water. A water discharge port 16 and a rim water discharge port 18 for performing rim water discharge are formed.
The jet spout 16 is formed at the bottom of the bowl portion 12 and is disposed substantially horizontally toward the inlet of the drain trap pipe 14 to discharge the 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. The drain pipe 15 described above is connected to the lower end of the trap descending pipe 14c.

  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 through which cleaning water is supplied from the water supply. The water supply path 24 has a stop cock 26, a strainer 28, and a branch fitting 30 from the upstream side. 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 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 constant flow valve 32, the electromagnetic on-off valve 34, and the water supply channel switching valve 36 are integrally assembled as a valve unit 37 (water supply means) as shown in FIG. 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 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 supplied from the rim-side water supply path 38, which is the rim side, by the water supply path switching valve 36. The water supply tank 20 is supplied to the rim water spouting port 18 or from the tank side water supply path 40 which is the tank side. 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 can change the ratio of the water supply amount to the rim side and the tank side arbitrarily. It is a valve.
The opening / closing operation of the electromagnetic opening / closing valve 34 and the switching operation of the water supply channel switching valve 36 are controlled by the controller 62 (control means) of the function unit 10. The water can be supplied to the water storage tank by opening the electromagnetic opening / closing valve 34 and allowing the water supply path switching valve 36 to communicate with the tank side water supply path 40.

  A jet-side water supply path 46 is connected to the lower part of the water storage tank 20, and a downstream end of the jet-side water supply path 46 is connected to the jet water outlet 16. Further, the pressurizing pump 22 described above is provided in the middle of the jet side water supply passage 46. The pressurizing pump 22 pressurizes the cleaning water stored in the water storage tank 20 and discharges it from the jet water outlet 16. The rotation speed, operating time, and the like of the pressure pump 22 are controlled by a controller 62 provided in the function unit 10.

  The jet-side water supply path 46 includes an upstream jet-side water supply path 46 a upstream from the pressurizing pump 22 and a downstream-side downstream jet-side water supply path 46 b. Here, as shown in FIG. 3, the downstream jet side water supply passage 46 b first extends upward from the pressurizing pump 22, and a pipe is disposed above the water storage surface A of the bowl portion 12 of the flush toilet 1, Thereafter, the pipe is configured to extend downward. Thus, in the downstream jet side water supply path 46b formed in the upward convex shape, the top portion 46c, which is the highest part of the convex portion, is a jet side water supply path from the water storage tank 20 to the jet spout 16. It is the highest part of 46.

Next, the rim-side water supply passage 38 is provided with a rim water discharge vacuum breaker 48 to prevent backflow of the cleaning water from the rim water discharge port 18 when negative pressure is generated in the water supply passage 24. Yes. Further, as shown in FIG. 3, the rim discharge 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 path 40 is also provided with a vacuum breaker 42 as a check valve to prevent the backflow of the wash water from the water storage tank.

Here, the water storage tank 20 is a hermetic type water storage tank, and a check valve 43 is provided at a connection portion between the tank side water supply path 40 and the water storage tank 20. Even when the water storage tank 20 becomes full due to the check valve 43, the check valve 43 rises and closes the connection portion with the tank-side water supply path 40. It is designed not to flow backward.
Similarly, a check valve 44 is also provided at the connection portion between the return pipe 50 and the water storage tank 20, so that the wash water flows back to the return pipe 50 even when the water storage tank 20 becomes full. There is no such thing.

  Furthermore, a jet water spouting flapper valve 56 and a water drain plug 58, which are check valves, are provided in the upstream jet side water supply path 46a of the jet side water supply path 46. 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 drained 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 escaping 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.

Further, an overflow channel 70 is provided at one position above the upper float switch 64a of the water storage tank 20 with one end opened (opening 70a) and the other end 70b connected to the downstream jet side water supply channel 46b. A flapper valve 72 that is a check valve is attached to the overflow channel 70.
When the water level in the water storage tank 20 is higher than the opening 70a, the overflow flow path 70 allows the water in the water storage tank 20 to escape from the jet water outlet 16 to the toilet body 2 via the jet-side water supply passage 46. The water is prevented from overflowing from the water storage tank 20.

  Further, 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. In addition, since the other end 70b of the overflow channel 70 is provided above the level of the stored water in the bowl portion 12, the backflow from the jet spout 16 of the cleaning water can be more reliably prevented. Yes.

  The operation contents of the electromagnetic on-off valve 34, the water supply channel switching valve 36, the pressurizing pump 22 and the like described above will be described. The controller 62 operates the electromagnetic on / off valve 34 and the water supply channel switching valve 36 by the operation of the toilet flushing switch (not shown) by the user, and first discharges water from the rim water discharge port 18 and continues the rim water discharge while continuing the rim water discharge. Then, the pressure pump 22 is operated to start water discharge from the jet water discharge port, and a siphon action is generated to discharge and wash the accumulated water in the bowl portion 12 together with the filth. Further, the controller 62 continues the rim water discharge even after the operation of the pressurizing pump 22 is stopped, stores the accumulated water in the bowl portion 12, and finishes the cleaning. After the cleaning is completed, the water supply path switching valve 36 is switched to the water storage tank 20 side to supply cleaning water to the water storage tank 20. When the water level in the water storage tank 20 rises and the upper float switch 64a detects the specified water storage amount, the controller 62 closes the electromagnetic on-off valve 34 and stops water supply.

  Next, an upper float switch 64 a and a lower float switch 64 b are arranged inside the water storage tank 20. The upper float switch 64a is an upper water level detecting means for detecting the water level in the water storage tank 20 when cleaning water is supplied into the water storage tank 20, and the water level in the water storage tank 20 is higher than a predetermined water level L1. The controller 62 detects this and closes the electromagnetic opening / closing valve 34. Thereby, the wash water finally stored in the water storage tank 20 is stored up to the water stop water level (WFL).

  The lower float switch 64b is provided below the upper float switch 64a in the water tank 20, and is a lower water level detection means for detecting the water level in the water tank 20 when the wash water is supplied from the water tank 20 to the toilet body 2. And if the water level in the water storage tank 20 falls below the predetermined water level L3, it switches from off to on.

  The flush toilet 1 is either in a state where the amount of washing water supplied to the toilet body 2 is large (large washing) or a state where the amount of washing water supplied to the toilet body 2 is small (small washing). This can be selected by the user by operating a toilet flushing switch (not shown). Before the toilet flushing is started, the water level in the water storage tank 20 is the water stop water level (WFL), and when the toilet flushing is instructed by the user's operation of the toilet flushing switch, the jet discharge from the water storage tank 20 is performed. Supply of the washing water to the water port 16 is started, and the water level in the water storage tank 20 starts to fall.

Here, when large washing is selected with the toilet flushing switch operated by the user, the water level in the water storage tank 20 starts from the water level L3 after the supply of the cleaning water from the water storage tank 20 to the jet spout 16 starts. When the lower float switch 64b is turned on, the controller 62 stops the operation of the pressurizing pump 22, and the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 is stopped. Finally, the water level in the water storage tank 20 falls to the dead water level WDL1.
Next, when small washing is selected by the toilet flushing switch operated by the user, first, the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 is started, and then the water level in the water storage tank 20 is the water level L1. The water level is detected by the upper float switch 64a until the water level descends further downward, and the timer control is performed for the water level lowering below the water level L1. By this timer control, the controller 62 controls the operation of the pressurizing pump 22 so that the dead water level becomes the dead water level WDL2, and the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 is stopped.

  Next, the operation flow of the flush toilet according to the first embodiment of the present invention will be described with reference to FIG. FIG. 4 is a flowchart illustrating the flushing operation of the flush toilet according to the first embodiment of the present invention.

  As shown in FIG. 4, when toilet flushing is started, rim water spouting is started from the rim water spouting port 18 (step S1). That is, the controller 62 controls to switch the water supply channel switching valve 36 so that all the cleaning water is supplied to the rim side (100% rim), and the cleaning water is supplied from the rim side water supply channel 38 to the rim water spouting port 18. The rim water spouting from the rim water spouting port 18 is continuously performed until the tank water supply is started (step S12).

  When a predetermined time T1 has elapsed since the start of rim water discharge from the rim water discharge port 18 in step S1, jet water discharge from the jet water discharge port 16 is started (steps S2 and 3). That is, the controller 62 operates the pressurizing pump 22 to supply the cleaning water stored in the water storage tank 20 to the jet water outlet 16 through the jet side water supply path 46.

  In addition, when the jet water discharge from the jet water outlet 16 is started in step S3, the flow is divided depending on whether the type of the toilet flushing switch pressed by the user is the large washing or the small washing (step S4).

In the case of the large washing in step S4, that is, when the type of the toilet flushing switch pressed by the user is the large washing, the water storage tank 20 is kept until the water level in the water storage tank 20 reaches the dead water level at the time of the large washing. After the cleaning water is supplied to the jet water spouting port 16, the jet water spouting is stopped (steps S5, 6, 10).
Specifically, the controller 62 determines whether or not the lower float switch 64b in the water storage tank 20 has been turned on (step S5). If it is determined in step S5 that the lower float switch 64b has not been turned on, the controller 62 determines whether or not a predetermined time T2 has elapsed since the start of jet water discharge (step S6). This step S6 is a safety timer when the lower float switch 64b has failed and has not been turned on. If it is determined in step S6 that the predetermined time T2 has elapsed since the start of jet water discharge, or if it is determined in step S5 that the lower float switch 64b has been turned on, the jet water discharge is stopped (step S10). . That is, the controller 62 stops the pressurizing pump 22 and stops the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 through the jet side water supply passage 46.
In the present embodiment, the jet water discharge is stopped when the lower float switch 64b is turned on in step S5 (step S20). However, the present invention is not limited to this, and the jet water discharge from the water storage tank 20 is performed. Depending on the supply amount of the washing water to the water port 16 and the position where the lower float switch 64b is provided, the jet water spouting may be stopped when a predetermined time elapses after the lower float switch 64b is turned on in step S5. .

In the case of small washing in step S4, that is, when the type of the toilet flushing switch pressed by the user is small washing, the water storage tank 20 is kept until the water level in the water storage tank 20 reaches the dead water level at the time of the small washing. After the cleaning water is supplied to the jet water spouting port 16, the jet water spouting is stopped (steps S7 to S10).
Specifically, the controller 62 determines whether or not the upper float switch 64a in the water storage tank 20 has been switched off (step S7). If it is determined in step S7 that the upper float switch 64a has been switched off, the jet water spouting is stopped after a predetermined time T3 has elapsed since the upper float switch 64a has been switched off (steps S8 and S10). If it is determined in step S7 that the upper float switch 64a has not been switched off, the controller 62 determines whether or not a predetermined time T4 has elapsed since the start of jet water discharge (step S9). This step S9 is a safety timer when the upper float switch 64a has failed and has not been switched off. In step S9, when the predetermined time T4 has elapsed since the start of jet spouting, the process proceeds to step S10, and jet spouting is stopped.

  After a predetermined time T5 has elapsed since the jet water spouting was stopped in step S10, the rim water spouting from the rim water spouting port 18 is stopped and the tank water supply for supplying cleaning water to the water storage tank 20 is started (steps S11 to 13). ). In other words, when a predetermined time T5 has elapsed since the jet water discharge was stopped, the controller 62 controls the water supply channel switching valve 36 so that the entire cleaning water is supplied to the rim side (the rim 100%). Switch to a state where water is supplied to the tank (tank 100%) and start tank water supply.

  Then, tank water supply is performed until the inside of the water storage tank 20 becomes full, and tank water supply is stopped when the inside of the water storage tank 20 becomes full (steps S14 and 15).

  Next, the effect of the flush toilet in this embodiment is demonstrated.

  In the present embodiment, the controller 62 of the flush toilet 1 is configured so that the washing water from the water storage tank 20 to the toilet body 2 is turned on when the lower float switch 64b is turned on after the toilet flushing is started. The supply is stopped, and at the time of small washing, the upper float switch 64a is turned off after the toilet flushing is started, and then the supply of flush water from the water storage tank 20 to the toilet body 2 is stopped after a predetermined time T3 has elapsed. . Thereby, not only the supply of the wash water from the water storage tank 20 to the toilet body 2 is controlled based on the detection of the water level detection means (lower float switch 64b) at the time of large washing, but also the toilet flushing starts at the time of small washing The water level detection means (upper float switch 64a) is not controlled from the start of toilet flushing until the upper float switch 64a is turned off, instead of controlling the supply of flush water from the water storage tank 20 to the toilet body 2 by timer control from stop to stop. Since the supply of the wash water from the water storage tank 20 to the toilet body 2 is controlled using the detection by the above, variation in the amount of the wash water supplied from the water storage tank 20 to the toilet body 2 can be suppressed.

Next, an operation flow of the flush toilet according to the second embodiment of the present invention will be described. FIG. 5 is an overall configuration diagram showing a flush toilet according to the first embodiment of the present invention.
The flush toilet 100 according to the second embodiment of the present invention is the same as the above-described first embodiment except for the configuration relating to the water level in the water storage tank 20. Accordingly, here, only the points of the present embodiment that are different from the first embodiment will be described, and description of similar points will be omitted.

As shown in FIG. 5, in the present embodiment, the lower float switch 64b is configured to be above the dead water level WDL102 in the water storage tank 20 during small cleaning. Thereby, at the time of the small washing, the controller 62 causes the lower float switch 64b to be activated when the water level in the water storage tank 20 falls to the water level L13 after the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 is started. When switched on, the controller 62 stops the operation of the pressurizing pump 22 and the supply of the washing water from the water storage tank 20 to the jet water spouting port 16 is stopped. Finally, the water level in the water storage tank 20 drops to the dead water level WDL102.
In the case of large cleaning, the lower float switch 64b is turned on when the water level in the water storage tank 20 drops to the water level L13 after the supply of the cleaning water from the water storage tank 20 to the jet spout 16 starts. After that, the controller 62 switches to the timer control, and after a predetermined time has elapsed since the lower float switch 64b is turned off, the controller 62 stops the operation of the pressurizing pump 22 and transfers the water from the storage tank 20 to the jet spout 16. The supply of washing water is stopped. Finally, the water level in the water storage tank 20 falls to the dead water level WDL101.

  As described above, in the flush toilet 100 according to the second embodiment of the present invention, water is stored based on detection by the lower float switch 64b up to the water level L3 at which the lower float switch 64b is switched on in both the large washing and the small washing. By detecting the water level in the tank 20, it is possible to suppress variations in the amount of cleaning water supplied from the water storage tank 20 to the toilet body 2.

  As mentioned above, although embodiment of the technique which this application discloses was described, the technique which this application discloses is not limited above.

  For example, in the above-described embodiment, the cleaning water in the water storage tank 20 is supplied to the jet water spouting port 16 via the jet-side water supply passage 46. However, the present invention is not limited to this, and the cleaning in the water storage tank 20 is performed. A configuration may be adopted in which water is supplied to the rim water spouting port 18.

  The elements included in each of the embodiments described above can be combined as much as technically possible, and combinations thereof are also included in the scope of the present invention as long as they include the features of the present invention.

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 4 Toilet seat 6 Cover 8 Local cleaning device 10 Functional part 11 Side panel 12 Bowl part 14 Drain trap pipe 14a Inlet part 14b Trap rise pipe 14c Trap down pipe 14d Top 15 Drain pipe 16 Jet spout 18 Rim spout 20 Water storage tank 22 Pressure pump 24 Water supply path 26 Stop cock 28 Strainer 30 Branch fitting 32 Constant flow valve 34 Electromagnetic on-off valve 36 Water supply path switching valve 37 Valve unit (water supply means)
38 rim side water supply path 40 tank side water supply path 42 vacuum breaker 43 check valve 44 check valve 46 jet side water supply path 46a upstream jet side water supply path 46b downstream jet side water supply path 48 rim water discharge vacuum breaker 50 return pipe 56 jet Water flapper valve 58 Drain plug 60 Water tray 62 Controller (control means)
64a Upper float switch (upper water level detection means)
64b Lower float switch (lower water level detection means)
70 Overflow channel 70a Opening 70b The other end A Reservoir surface

Claims (3)

The toilet body,
A water storage tank for storing wash water to be supplied to the toilet body,
Wash water supply means for supplying wash water in the water storage tank to the toilet body,
An upper water level detecting means for detecting a water level in the water storage tank provided below the water stop water level in the water storage tank and supplying wash water to the water storage tank; and the upper water level in the water storage tank. A water level detection means comprising: a lower water level detection means provided below the detection means for detecting a water level in the water storage tank when wash water is supplied from the water storage tank to the toilet body.
Control means for adjusting the total amount of wash water supplied from the water storage tank to the toilet body by controlling the wash water supply means according to the selection of large washing or small washing by the user;
A flush toilet equipped with
The flush toilet according to claim 1, wherein the control means controls the washing water supply means based on detection by the water level detection means during the large washing and the small washing.   The control means supplies the wash water from the water storage tank to the toilet body after a predetermined time has elapsed since the upper water level detection means detected a drop in the water level in the water storage tank during the small washing. The flush toilet according to claim 1 to be stopped. The lower water level detection means is provided above the dead water level in the water storage tank at the time of the small washing,
The control means stops supply of wash water from the water storage tank to the toilet body when the lower water level detection means detects a drop in the water level in the water storage tank during the small washing. A flush toilet according to 1.

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