JP2011140833A - Flush toilet bowl and overflow preventing method in flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush toilet bowl and an overflow preventing method in the flush toilet bowl, improved in the overflow preventing performance. <P>SOLUTION: The flush toilet bowl 4 includes a bowl part 22 into which washing water is supplied through a washing water flow channel 8, and a trap pipeline 23 provided between the bowl part 22 and a drain pipe 25 and draining the washing water supplied to the bowl part 22 into the drain pipe 25. The flush toilet bowl further includes a relief flow channel 30 with its one end opening 31a positioned near the upper end inside the bowl part 22 and with the other end opening 31b connected to the drain channel 33 communicating with the other drain pipe. Furthermore, the relief flow channel 30 is provided to be substantially horizontal in the axial direction, and a water level detecting sensor 36 for detecting a rise in the level of the washing water supplied to the bowl part 22 is provided inside the relief flow channel 30. The water level detecting sensor 36, when detecting a rise in the washing water level, is configured to stop supplying the washing water to the bowl part 22. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a Western-style flush toilet, and more particularly, a flush toilet and flush toilet having a structure for preventing flushing water from overflowing from a bowl when, for example, an object is clogged in a trap pipe. The invention relates to a method for preventing overflow in

  FIG. 7 shows the basic configuration of a Western style flush toilet. The flush toilet 100 shown in the figure is installed in an isolation room provided in a place away from a guard room or other room in order to temporarily enter a mentally unstable person or the like in a housing facility such as a hospital or a detention center. Is. For this reason, the flush toilet 100 is integrated by, for example, fixing the toilet seat 102 to the toilet body 101 so as not to be destroyed by a resident. The flush toilet 100 is not provided with a toilet lid that is easily broken.

  As shown in FIG. 7, the flush toilet 100 is composed of a toilet body 101 and a toilet seat 102. The toilet body 101 includes a bowl portion 103 serving as a portion for receiving filth, and a trap conduit 104 connected to the bottom of the bowl portion 103. The bowl portion 103 is formed in a substantially funnel shape and is provided integrally with the exterior of the toilet body 101. The trap conduit 104 is a conduit that is bent in a substantially S-shape, and has one end 104a connected to the bottom of the bowl portion 103 as described above and the other end 104b connected to a drain pipe 105 under the floor. The trap conduit 104 is housed inside the exterior of the toilet body 101. A connecting portion between the other end 104 b of the trap pipe 104 and the drain pipe 105 is a drain port 106. Moreover, as shown to (a), the exterior of the toilet bowl main body 101 has comprised the substantially oval shape in planar view, and the toilet seat 102 was fixed and provided in the peripheral part. The toilet seat 102 is made of a hard or soft synthetic resin, and in other words, the toilet body 101 (including the exterior, the bowl portion 103, the trap pipe 104, etc.) is made of SUS.

  In addition, although the flush toilet is disclosed by the following patent documents 1 and 2, etc., the basic structure of the toilet is substantially the same as the flush toilet 100 (refer FIG. 7) mentioned above.

JP 2009-7853 A JP 2005-264469 A

  However, in the conventional flush toilet 100 as shown in FIG. 7, for example, when the trap pipe 104 is clogged, for example, the wash water that flows through the wash water flow path 107 and is supplied to the bowl portion 103 is drained. The water was not discharged into the tube 105, and the washing water overflowed from the bowl portion 103. (Hereinafter, overflow of the washing water from the bowl portion 103 in this way is referred to as overflow.)

  In the accommodation facility, the cleaning water supplied to the flush toilet 100 installed in the isolation room may be controlled by the control unit. If there is a control unit, for example, the bowl unit 103 is provided with a water level detection sensor that detects when the water level reaches or exceeds a predetermined level, and in response to an output signal (sensing signal) from the water level detection sensor. Thus, it is possible to prevent the overflow by configuring the control unit to perform the control for quickly stopping the supply of the cleaning water.

  However, even if a signal for stopping the supply of the cleaning water is output from the control unit, since the cleaning water already flowing in the cleaning water flow path 107 is supplied to the bowl unit 103, the water level when the water level detection sensor senses the water level. That amount will be exceeded. This creates the possibility of overflow. Further, a person who enters the isolation room may be mentally unstable, and therefore, it is conceivable to destroy or remove the water level detection sensor provided in the bowl portion 103.

  Therefore, the present invention has been made in view of the above situation, and the overflow prevention performance is improved, and even if a water level detection sensor is used to prevent overflow, the destruction of the water level detection sensor can be prevented. An object of the present invention is to provide a flush toilet and a method for preventing overflow in the flush toilet.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The flush toilet according to claim 1 of the present invention includes a bowl portion 22 to which wash water is supplied through the wash water flow path 8;
In the flush toilet 4 provided between the bowl part 22 and the drain pipe 25 and comprising a trap pipe 23 for discharging the wash water supplied to the bowl part 22 to the drain pipe 25,
One end opening 31 a is located near the upper end in the inside of the bowl portion 22, and an escape passage 30 in which the other end opening 31 b is connected to the drainage passage 33 is provided.

In the flush toilet according to claim 2, the escape passage 30 is provided such that its axial direction is substantially horizontal,
A water level detection sensor 36 for detecting an increase in the level of the washing water supplied to the bowl portion 22 is provided in the escape passage 30.
When the water level detection sensor 36 detects an increase in the water level of the cleaning water, the supply of the cleaning water toward the bowl portion 22 is stopped.

  The flush toilet according to claim 3 is characterized in that a water contact sensor is used as the water level detection sensor 35.

In the flush toilet according to claim 4, the other end opening 31b of the escape passage 30 is provided at a bottom 32 of the passage 30.
The bottom portion 32 of the escape passage 30 is formed so as to rise upward from the one end opening 31a toward the other end opening 31b, and to rise substantially vertically immediately before the other end opening 31b ( Wall 34),
The water level detection sensor (water contact sensor) 36 is provided so as to detect an increase in the level of the washing water at a position lower than the other end opening 31b of the escape passage 30.

The overflow prevention method in the flush toilet according to claim 5 is an overflow prevention method in the flush toilet according to any one of claims 2 to 4,
When the level of the cleaning water supplied to the bowl portion 22 rises to the vicinity of the upper end of the bowl portion 22, the cleaning water enters the escape passage 30 from the one end opening 31a and the drainage from the other end opening 31b. Drain through the channel 33,
Further, when the water level detection sensor (water contact sensor) 36 detects an increase in the water level of the cleaning water inside the escape passage 30, the supply of the cleaning water toward the bowl portion 22 is stopped. It is characterized by.

  According to the flush toilet of the present invention, an escape passage is provided in which one end opening is positioned in the vicinity of the upper end inside the bowl portion and the other end opening is connected to the drainage passage. Even if the water is clogged and the washing water overflows from the bowl portion, the washing water escapes and flows through the flow path, and the overflow prevention performance is improved.

  Moreover, when the water level detection sensor provided inside the escape passage senses an increase in the water level of the cleaning water, the supply of the cleaning water toward the bowl portion is stopped, thereby preventing the overflow more reliably. As well as water waste. Furthermore, since the relief flow path is provided so that the axial direction thereof is substantially horizontal, the surface of the wash water that has entered the relief flow path becomes substantially horizontal. As a result, the water level detection sensor accurately detects an increase in the level of the cleaning water. In addition, since the water level detection sensor provided in the escape passage is not visible from the outside, it is possible to prevent the water level detection sensor from being destroyed.

  Further, by using a water contact sensor as the water level detection sensor, it becomes possible to directly detect the water level of the cleaning water rather than a light projecting / receiving sensor or the like, thereby preventing erroneous detection.

  In addition, the bottom of the escape passage is formed so as to rise upward from one end opening toward the other end opening provided at the bottom, and so as to rise substantially vertically immediately before the other end opening. In the initial stage of the rise in the level of the cleaning water exceeding the predetermined value, the cleaning water that has entered from the opening at one end is not immediately discharged from the opening at the other end, and accumulates between the opening at one end and the other end. At this time, the water level of the cleaning water becomes substantially horizontal, and the water level detection sensor (water contact sensor) accurately detects an increase in the water level of the cleaning water.

  According to the overflow prevention method in the flush toilet of the present invention, for example, even if the trap pipe is clogged and the wash water is about to overflow from the bowl portion, the wash water flows through the escape passage and is discharged, The water level detection sensor provided inside the escape passage senses an increase in the water level of the washing water, and when the water level detection sensor senses it, the supply of the washing water to the bowl is stopped, thereby preventing the overflow prevention performance. improves.

It is a top view which shows an isolation room and a guard room (the operation panel provided in). It is a front view which shows the operation panel provided in the guard room. It is a block block diagram of the water supply system in a accommodation facility (an isolation room, a guard room). It is a top view which shows embodiment of the flush toilet bowl by this invention. It is the same side view. It is the same part enlarged view. (A) It is a top view which shows the conventional flush toilet. (B) It is the side view.

Embodiments of the present invention will be specifically described below with reference to the drawings.
This embodiment is a Western style installed in an isolation room located away from a guard room or other room in order to temporarily enter mentally unstable persons in a containment facility such as a hospital or detention center. This is a flush toilet.

First, an isolation room in which this embodiment (a flush toilet) is installed will be described.
The accommodation facility is divided into walls made of concrete and other rooms. The isolation room is a room provided in a place away from the guard room. As shown in FIG. 1, the isolation chamber 1 is partitioned by a wall 2 made of concrete, like the other chambers. A door 3 is provided between the interior and the exterior of the isolation chamber 1.

  A flush toilet 4 according to this embodiment, which will be described later, is installed in the room of the isolation room 1 for the purpose of adding people to the room. In addition to the flush toilet 4, a hand-washing machine may be installed.

  In addition, a push button switch 5 (see FIG. 3) for the occupant to press when flushing water to the flush toilet 4 is embedded in the wall of the isolation chamber 1 so that only the operation surface is exposed. Installed.

  A closed box type case 6 made of SUS is embedded in the wall 2 of the isolation chamber 1. Inside the sealed box type case 6, although not shown, a pipe connected to a water source side conduit for supplying water from the water source to the case 6 is disposed. The pipe is connected to a pipe line (wash water flow path 8) that leads to the flush toilet 4 via the flush valve 7.

  The flash valve 7 described above employs an electrically operated flash valve, that is, an automatic flash valve. According to the valve 7, when an occupant presses the push button switch 5 and an electric signal is output, the valve 7 is released by pressure water flowing through a connection pipe (not shown), and the washing water immediately flows into the washing water passage 8. .

  The back of the sealed box type case 6 is exposed to the outside (corridor side) of the isolation chamber 1, and the rear door 9 is opened from the outside to maintain the flash valve 7 and piping accommodated in the case 6. Can be checked.

Next, the operation panel installed in the guard room will be described.
As shown in FIGS. 1 and 2, the flush valve 7 that controls the water supply to the isolation room 1 is electrically connected to an operation panel 11 installed in the guard room 10. 10 can be operated remotely. It is to be noted that a person who enters the isolation room 1 operates from the inside of the isolation room 1 (presses the push button switch 5) is referred to as a proximity operation.

  FIG. 2 shows an enlarged part of the operation panel 11. As shown in FIG. 2, on the operation surface of the operation panel 11, a push button switch 12 for remotely operating (opening and closing) the flash valve 7 and a changeover switch 15 are provided for each isolation chamber 1. .

  The push button switch 12 is an illumination type by LED, and the switch itself is lit according to the contact state. When the pressed pushbutton switch 12 is pressed again, the contact is switched and the light is turned off. The push button switch 12 functionally has both an operation function and a light emission function. That is, the push button switch 12 includes an operation unit 13 for remotely operating the flash bulb 7 and a light emitting unit 14 for emitting and displaying that the flash bulb 7 has been operated in the vicinity.

  The changeover switch 15 can switch modes by three contacts. When the changeover switch 15 is in the “OFF” mode, which is the first mode, both the proximity operation by the push button switch 5 in the isolation room 1 and the remote operation by the push button switch 12 in the guard room 10 are impossible. Thus, when the “hand” mode, which is the second mode, is indicated, the remote operation by the push button switch 11 of the guard room 10 is enabled by disabling the proximity operation by the push button switch 5 of the isolation room 1, When the “far” mode, which is the three mode, is indicated, only the proximity operation by the push button switch 5 of the isolation chamber 1 is possible.

  A control unit 16 is provided between the isolation room 1 and the guard room 10. Specifically, the control by the control unit 16 when the changeover switch 15 selects the above-described modes will be described. When the changeover switch 15 is in the “OFF” mode (first mode) as shown in FIG. The control unit 16 controls the power supply to the flash valve 7 to be cut off.

  When the changeover switch 15 indicates the “hand” mode (second mode), a signal is output to the control unit 16 by a proximity operation by the push button switch 5 of the isolation chamber 1, but the control unit 16 supplies the flash valve 7 with the signal. Control not to output an open signal. At the same time, the control unit 16 controls to output a lighting signal to the push button switch 12 of the guard room 10. Thereby, the push button switch 12 of the guard room 10 is turned on. Further, the control unit 16 controls the flash valve 7 to be opened (output an open signal) based on a signal output by a remote operation by the push button switch 12 of the guard room 10. When the changeover switch 15 indicates the “hand” mode (second mode), remote operation by the push button switch 12 of the guard room 10 is always possible.

  When the changeover switch 15 is in the “far” mode (third mode), the controller 16 outputs an open signal to the flash valve 7 when a signal is output by the proximity operation by the push button switch 5 of the isolation chamber 1. Control to do. At the same time, the control unit 16 performs control so as to block a signal output by a remote operation by the push button switch 12 of the guard room 10.

  The mode switching of the changeover switch 15 as described above can be realized by a general circuit configuration.

From here, this embodiment (flush toilet) will be described.
As shown in FIGS. 4 and 5, the flush toilet 4 is composed of a toilet body 20, a toilet seat 21, and an escape channel 30. The toilet body 20 includes a bowl portion 22 that serves as a portion for receiving filth, and a trap pipe 23 connected to the bottom of the bowl portion 22. The bowl portion 22 is formed in a substantially funnel shape and is provided integrally with the exterior of the toilet body 20. In the vicinity of the upper edge of the rear portion of the bowl portion 22, a water discharge port 24 for supplying cleaning water from the above-described cleaning water flow path 8 is provided. The trap conduit 23 is a conduit that is provided between the bowl portion 22 and the drainage pipe 25 under the floor, and is bent in a substantially S shape. One end 23 a of the conduit is connected to the bottom of the bowl portion 22, and the other end 23 b is connected to the drain pipe 25. The trap conduit 23 is accommodated inside the exterior of the toilet body 20. A connection portion between the other end 23 b of the trap pipe 23 and the drain pipe 25 is a drain port 26. Moreover, as shown in FIG. 4, the exterior of the toilet body 20 has a substantially oval shape in plan view, and a toilet seat 21 is fixedly provided on the peripheral edge thereof. The toilet seat 21 is made of hard or soft synthetic resin, and other than that, that is, the toilet body 20 is made of SUS. In addition, the code | symbol 27 shown in FIG. 4 is a lid | cover for obstruct | occluding the opening provided in the bowl part 22 in order to perform the maintenance and inspection of the trap pipe line 23. FIG.

  The escape channel 30 is a substantially rectangular channel provided so that the axial direction thereof is substantially horizontal, and is provided with the one end opening 31 a positioned near the upper end of the bowl portion 22. Further, the other end opening 31 b of the escape passage 30 is provided at the bottom 32 of the escape passage 30. The other end opening 31b of the escape channel 30 is connected to a drain channel 33 that communicates with a drain pipe (not shown) (a drain pipe different from the drain pipe 25 described above). Further, the drainage channel 33 is provided with an S-shaped trap 33a. A lid formed with a hole that prevents a human finger or the like from entering is attached to one end opening 31 a of the escape passage 30.

  The bottom portion 32 of the escape passage 30 is formed to rise upward from the one end opening 31a toward the other end opening 31b, and is formed to rise substantially vertically immediately before the other end opening 31b. This rising portion is referred to as a wall portion 34. Further, a lid 35 is provided on the upper part of the escape passage 30, and the lid 35 can be opened when the drainage passage 33 is cleaned.

  In addition, a water level detection sensor 35 for detecting an increase in the level of the cleaning water supplied to the bowl portion 22 is provided inside the escape passage 30. The water level detection sensor 35 notifies that the water level of the cleaning water in the bowl portion 22 has reached or exceeded a predetermined value (a value with a risk of overflow). A water contact sensor is used as the water level detection sensor 35. The water contact sensor 35 as a water level sensor is a sensor formed by covering an optical fiber with a substantially rod-shaped protective member. The water contact sensor 35 has a tip portion that is a sensing portion positioned between the one end opening 31a of the escape passage 30 and the wall portion 34 just before the other end opening 31b, and is lower than the other end opening 31b. It is provided in the position.

  As shown in FIG. 6, for example, when the trap pipe 23 is clogged and the water level in the bowl portion 22 rises to the vicinity of the upper end where the water level becomes a predetermined value or more, the above-described escape flow path 30 has one end Wash water enters from the opening 31a. The cleaning water that has entered from the one end opening 31a is blocked by the wall 34 immediately before the other end opening 31b and is not immediately discharged from the other end opening 31b. The water surface becomes almost horizontal. At this time, the water contact sensor 35 detects an increase in the level of the washing water. In the bowl portion 22, the water level is further raised by the wash water supplied thereafter, but the wash water is discharged from the other end opening 31 b of the escape flow path 30 to the drain flow path 33, and is drained through the drain flow path 33. To be discharged.

  Further, when the water contact sensor 35 senses an increase in the water level of the washing water, a sensing signal is output to the control unit 16 described above, and the control unit 16 outputs a close signal in response to this and closes the flash valve 7. To control. At the same time, the control unit 16 pushes the push button switch 12 provided on the operation panel 11 of the guard room 10 described above corresponding to the isolation chamber 1 in which the water contact sensor 35 senses an increase in the level of the wash water. A lighting signal is output to the button switch 12. As a result, the push button switch 12 is turned on. In addition, you may be comprised so that a warning sound may be sounded simultaneously with the pushbutton switch 12 lighting.

  Further, the control unit 16 also outputs a lighting signal to a reset button switch (not shown) provided in the above-described sealed box type case 6. Thereby, the reset button switch is lit. Note that the reset button switch is illuminated similarly to the push button switch 12 of the operation panel 11, and the switch itself is lit according to the contact state.

  When either one of the lighting push button switch 12 or the reset button switch is pressed, the control unit 16 outputs a signal for changing from lighting to blinking. Thereby, the display of the push button switch 12 and the reset button switch changes from lighting to blinking. At this time, the control unit 16 outputs a signal for stopping the remote operation by the push button switch 12 of the operation panel 11, and the remote operation is disabled.

  After the cause of the clogging is solved by removing the clogged material in the trap pipe 23 or the like, when the reset button switch blinking is pressed, the control unit 16 outputs a signal for returning each operation to the normal state. As a result, the normal state before the trap pipe 23 is clogged is restored.

  According to the above-described embodiment, the escape passage 30 is provided in which the one end opening 31a is positioned in the vicinity of the upper end inside the bowl portion 22 and the other end opening 31b is connected to the drainage passage 33 leading to the drain pipe. As a result, for example, even if the trap pipe 23 is clogged and the washing water overflows from the bowl portion 22, the washing water flows through the flow path 30 and is discharged to the drain pipe. Thereby, the overflow prevention performance is improved. In addition, it is desirable that the escape passage 30 is in the vicinity of the upper end of the bowl portion 22 in consideration of a rise in the water level due to the siphon action.

  In addition, when the water contact sensor 35 provided inside the escape passage 30 senses an increase in the water level of the cleaning water, the supply of the cleaning water toward the bowl portion 22 is stopped. In addition to further improvement, waste of water can be suppressed. Further, since the escape passage 30 is provided so that the axial direction thereof is substantially horizontal, the surface of the cleaning water that has entered the escape passage 30 becomes substantially horizontal. As a result, the water contact sensor 35 accurately senses an increase in the level of the wash water. In addition, since the water contact sensor 35 provided inside the escape passage 30 is not visible from the outside, it is possible to prevent destruction of the water contact sensor 35 and the like.

  Furthermore, by using the water contact sensor 35 for sensing the rise in the water level of the washing water, it becomes possible to directly sense the water level of the washing water, thereby preventing erroneous sensing.

  Further, the bottom portion 32 of the escape passage 30 is formed to be inclined upward from the one end opening 31a toward the other end opening 31b provided in the bottom portion 32, and a wall portion 34 is formed immediately before the other end opening 31b. By doing so, at the initial stage of the rise in the level of the cleaning water exceeding the predetermined value, the cleaning water that has entered from the one end opening 31a is not immediately discharged from the other end opening 31b, and the one end opening 31a and the other end opening 31b Accumulate in the middle. At this time, the water level of the washing water becomes substantially horizontal, and the water contact sensor 35 accurately senses the rise in the washing water level.

DESCRIPTION OF SYMBOLS 4 ... Flush toilet 8 ... Wash water flow path 22 ... Bowl part 23 ... Trap pipe line 25 ... Drain pipe 30 ... Escape flow path 31a ... One end opening 31b ... Other end opening 32 ... Bottom part 33 ... Drain flow path 34 ... Wall part 36 ... Water contact sensor as water level sensor

Claims (5)

A bowl portion to which cleaning water is supplied through the cleaning water flow path;
In the flush toilet provided with a trap pipe provided between the bowl part and the drain pipe and discharging the wash water supplied to the bowl part to the drain pipe,
A flush toilet characterized in that a relief passage is provided in which an opening at one end is located near the upper end in the inside of the bowl portion, and an opening at the other end is connected to the drainage passage. The escape passage is provided so that its axial direction is substantially horizontal,
A water level detection sensor for detecting an increase in the level of the cleaning water supplied to the bowl portion is provided inside the escape passage,
2. The flush toilet according to claim 1, wherein when the water level detection sensor detects an increase in the level of the cleaning water, the supply of the cleaning water toward the bowl portion is stopped.   The flush toilet according to claim 2, wherein a water contact sensor is used as the water level detection sensor. The other end opening of the escape channel is provided at the bottom of the channel;
The bottom portion of the escape passage is formed to rise upward from the one end opening toward the other end opening, and is formed to rise substantially vertically immediately before the other end opening,
The flush toilet according to claim 2 or 3, wherein the water level detection sensor is provided so as to sense an increase in the level of the washing water at a position lower than the other end opening of the escape passage. . An overflow prevention method in the flush toilet according to any one of claims 2 to 4,
When the level of the cleaning water supplied to the bowl portion rises to the vicinity of the upper end of the bowl portion, the cleaning water enters the escape passage from the one end opening and is discharged from the other end opening through the drain passage. ,
The overflow in the flush toilet is characterized in that when the water level detection sensor detects an increase in the water level of the washing water inside the escape passage, the supply of the washing water toward the bowl portion is stopped. Prevention method.

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