JP2021046776A - Flush toilet bowl - Google Patents

Abstract

To provide a flush toilet bowl equipped with a versatile water level detection unit that detects the occurrence of a clogging.SOLUTION: There is provided a flush toilet bowl equipped with a toilet bowl body 11, a washing pipe 2 connected to the back side of the toilet bowl body 11, and a water level detection unit 3 provided in the washing pipe 2. The washing pipe 2 has a horizontal portion 21 extending in a substantially horizontal direction, and the water level detecting unit 3 is preferably provided in the horizontal portion 21. The water level detection unit 3 has a detection unit 30 for detecting the water level, and a water level detection position P detected by the detection unit 30 is preferably below the overflow surface of the toilet bowl body 11.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to flush toilets.

Conventionally, a flush toilet has a water level detection unit that detects that the water level in the bowl of the toilet body has risen, and when it exceeds a preset value, it is possible to display that the toilet is clogged. A flush toilet is known (see, for example, Patent Document 1). The water level detection unit is attached to the inside of the toilet bowl body.

Japanese Unexamined Patent Publication No. 3-224925

When the water level detection unit is installed inside the toilet bowl body, it is necessary to manufacture the toilet bowl body so as to have a shape in which the water level detection unit can be installed. For this reason, it is necessary to design a toilet body in which a water level detection unit can be arranged for each type of flush toilet, and there is a problem that the installation of the water level detection unit is not versatile for various flush toilets. ..

The present disclosure relates to a flush toilet including a toilet body, a washing pipe connected to the back side of the toilet body, and a water level detection unit provided in the washing pipe.

It is a side view which shows the flush toilet of 1st Embodiment. It is a perspective view which shows the toilet seat in the flush toilet of 1st Embodiment. It is a figure which shows the water level detection part which concerns on the modification of 1st Embodiment. It is a figure which shows the flush toilet of the 2nd Embodiment. It is a figure which shows the flush toilet of the 3rd embodiment. It is a figure which shows the flush toilet of the 4th embodiment. It is a figure which shows the flush toilet of the 5th embodiment. It is a figure which shows the flush toilet of the 5th embodiment. It is a figure which shows the flush toilet of the sixth embodiment. It is a figure which shows the flush toilet of the sixth embodiment. It is a side view which shows the flush toilet of the 7th Embodiment. It is a side view which shows the washing pipe of 8th Embodiment. It is a side view which shows the flush toilet of the 9th embodiment. It is a side view which shows the flush toilet of the tenth embodiment.

FIG. 1 is a side view showing the flush toilet 1 of the first embodiment, and FIG. 2 is a perspective view showing the flush toilet 1 with the toilet seat 12 and the toilet lid 13 omitted. As shown in FIGS. 1 and 2, the flush toilet 1 of the present embodiment includes a flush pipe 2, a water level detection unit 3, a toilet flush valve 4, a control unit 5, and a notification unit 6.

The flush toilet 1 is a wall-mounted toilet, and the back surface of the flush toilet 1 is fixed and attached to the wall 9 at a position away from the bottom surface of the space in which the flush toilet 1 is installed. The flush toilet 1 has a toilet body 11, a toilet seat 12, a toilet lid 13, and a functional unit 14.
As shown in FIG. 2, the toilet bowl main body 11 has a bowl portion 110 whose upper portion is open and whose upper portion is recessed downward. The bowl portion 110 is configured so that the washing water supplied from the washing pipe 2 described later is always stored at a constant water level, and the lower end thereof is connected to the drain port 111.
The toilet seat 12 is arranged along the opening of the toilet body 11, and has a substantially annular shape and a flat upper surface.
The toilet lid 13 is a lid that covers the openings of the toilet seat 12 and the toilet body 11 so as to be openable and closable, and is hinged to the upper part of the functional portion 14.

The functional unit 14 is arranged above the toilet body 11, and is a portion where functional parts for operating each part of the flush toilet 1 such as opening and closing the toilet seat 12 and the toilet lid 13 and heating the toilet seat 12 are arranged. is there. The functional unit 14 is provided with a water level detection unit 3 described later, a control unit 5 for controlling the toilet bowl cleaning valve 4, and a notification unit 6.

One end of the cleaning pipe 2 is connected to the back side of the toilet bowl body 11, and the other end penetrates the wall 9 and is connected to the water supply source inside the wall 9. The washing pipe 2 supplies washing water from the water supply source into the bowl portion 110. As shown in FIG. 1, the cleaning pipe 2 has a horizontal portion 21 extending in a substantially horizontal direction from the back surface side of the toilet bowl main body 11, and an extension portion 22 bent from the horizontal portion 21 and extending in the vertical direction.

The horizontal portion 21 is a portion in which one end of the pipe of the cleaning pipe 2 is connected to the toilet bowl main body 11 and extends horizontally from the connected portion to the rear of the toilet bowl main body 11. The lower end surface of the horizontal portion 21 is arranged at least at a position lower than the upper surface 11a of the toilet bowl main body 11. Preferably, the upper end surface of the horizontal portion 21 is also arranged at a position lower than the upper surface 11a of the toilet bowl main body 11.

The extension portion 22 extends upward from an end portion of the horizontal portion 21 that is not connected to the toilet bowl body 11. The extension portion 22 may extend in any direction or may be bent as long as the washing water can be supplied from the water supply source to the toilet bowl main body 11 by using a pump or the like.

As shown in FIG. 1, the water level detection unit 3 is attached to the horizontal portion 21 of the cleaning pipe 2. Specifically, the water level detection unit 3 has a T-shaped connecting pipe 34 for attaching to the cleaning pipe 2. The water level detection unit 3 has a first portion 341 extending along the moving direction of the float 32 and a second portion 342 along the horizontal portion 21 of the cleaning pipe 2, and a flange is formed at the end of the second portion 342. It is connected to the flange formed on the horizontal portion 21 by a screw.

The water level detection unit 3 has a detection unit 30. In the present embodiment, the detection unit 30 is, for example, a float type water level gauge that detects the water level of the washing water stored in the bowl unit 110, and includes a stem 31, a float 32, and a stopper 33. The detection unit 30 has a water level detection position P for detecting the water level, and the water level detection position P is the water level when the float 32 hits the lower surface of the stopper 33 in the horizontal portion 21. The float 32 connected to the stem 31 moves up and down depending on the water level inside the cleaning pipe 2, and when the water level rises to a predetermined position, it hits the stopper 33 so that the rise in the water level is detected. The water level detection position P is arranged in the first portion 341. Further, the float 32 and the stopper 33 are also arranged in the first portion 341. The stopper 33 may be arranged in the first portion 341, and the float 32 may be arranged in the second portion 342.

Since the water level detection unit 3 is attached to the horizontal portion 21, the detection unit 30 is arranged below the overflow surface of the toilet bowl main body 11. Therefore, in the present embodiment, the water level detection position P by the detection unit 30 is below the overflow surface. The overflow surface is, in this case, the upper surface 11a of the toilet bowl body 11, and is the surface on which the water in the bowl portion 110 overflows. If the detection unit 30 is located above the overflow surface of the toilet bowl body 11, the water level in the horizontal portion 21 becomes high enough to detect "overflow" from the overflow surface of the toilet bowl body 11. There is a risk of water overflowing. If the detection unit 30 is arranged below the overflow surface as in the present embodiment, the rise in the water level can be detected before the water actually overflows.

When the cleaning water flows through the cleaning pipe 2 in normal use without clogging, the toilet bowl cleaning valve 4 is used so that the clogging is not detected even if the cleaning pipe 2 is filled with the cleaning water. The control is set to ignore the detection of the water level while it is open. That is, when the washing water is flowing in the washing pipe 2 to wash the toilet bowl body 11 and the water level of the water flowing in the washing pipe 2 exceeds a predetermined amount, based on the detection result of the water level detecting unit 3. The control unit 5 is set so as not to determine that the toilet bowl main body 11 is clogged.

When the water level in the cleaning pipe 2 rises to a predetermined water level, the water level detecting unit 3 detects that the water level in the toilet bowl main body 11 has risen. Specifically, the water level detection unit 3 has a threshold value for detecting an increase in the water level. When the water level detection unit 3 exceeds the predetermined threshold value, the water level detection unit 3 is configured to be able to output a signal to the effect that the threshold value has been exceeded to the control unit 5, which will be described later. This threshold value is higher than the normal water level and lower than the water level at which overflow occurs, and the amount of water supplied in the next toilet bowl cleaning newly flows into the toilet bowl body 11. However, the value is set so that the water in the toilet bowl body 11 does not overflow. The amount of wash water supplied to the toilet bowl body 11 in one toilet bowl wash is preset. The threshold value is set to the water level obtained by subtracting the water level increased by the washing water supplied to the toilet bowl main body 11 in the next one toilet bowl washing from the allowable amount of overflow of water in the toilet bowl main body 11. The permissible amount of water means the amount of water at the limit of the permissible range immediately before the overflow of the toilet body 11 occurs.

If the threshold was set without subtracting the water level that would increase in the next toilet bowl cleaning, the water level in the toilet bowl body 11 did not exceed the value at which the water level detection unit 3 detects the overflow of the toilet bowl body 11, but in normal times If it is higher than, there is a risk that water will overflow in the next toilet bowl wash. However, by setting the threshold value for detecting a predetermined water level to include the amount of water for the next toilet bowl wash, if the water level detection unit 3 does not detect the rise in the water level, the water suddenly overflows in the next toilet bowl wash. Can be prevented.

The toilet bowl cleaning valve 4 is a flush valve provided in the cleaning pipe 2. The toilet bowl cleaning valve 4 is attached to the extension portion 22 upstream of the water level detection unit 3 and is electrically connected to the water level detection unit 3. The toilet bowl cleaning valve 4 is composed of a water stop valve for stopping the washing water flowing through the washing pipe 2, an on-off valve for discharging and stopping the washing water, and a check valve for preventing the backflow of the washing water (all not shown). Will be done. The toilet bowl cleaning valve 4 discharges and stops the cleaning water discharged from the cleaning pipe 2 to the bowl portion 110.

As shown in FIG. 1, the water level detection unit 3 and the toilet bowl cleaning valve 4 are arranged inside the wall 9 on the back side to which the flush toilet bowl 1 is attached, and are concealed by the wall 9.

The control unit 5 is arranged inside the functional unit 14 and is electrically connected to the water level detection unit 3 and the toilet bowl cleaning valve 4. The control unit 5 controls the opening and closing of the toilet bowl cleaning valve 4 based on the water level detected by the water level detection unit 3. When the control unit 5 receives a signal that the water level detected by the water level detection unit 3 is equal to or higher than a predetermined threshold value, the control unit 5 determines that the toilet bowl body 11 is clogged. When the control unit 5 determines that the toilet bowl main body 11 is clogged, the control unit 5 controls to close the toilet bowl cleaning valve 4 and stops the water supply to the bowl unit 110. When the control unit 5 determines that the toilet bowl main body 11 is clogged based on the detection result of the water level detection unit 3, it outputs that the clog has occurred to the notification unit 6 described later.
While the control unit 5 opens the toilet bowl cleaning valve 4 to supply the cleaning water to clean the toilet bowl main body 11, clogging occurs based on the water level detected by the detection unit 30 of the water level detection unit 3. Do not judge that it was.

The notification unit 6 is arranged inside the function unit 14 and is electrically connected to the control unit 5. The notification unit 6 is configured to be able to transmit a signal to a management unit 7 outside the flush toilet 1 that manages the status of the flush toilet 1. When the control unit 5 determines that the toilet bowl body 11 is clogged, the notification unit 6 receives a signal output from the control unit 5 that the toilet bowl body 11 is clogged, and receives an external signal. Notify the management unit 7 that a blockage has occurred.

The management unit 7 is a system for maintaining and managing the flush toilet 1, and receives a signal notifying that the flush toilet 1 being managed is clogged. Upon receiving the information, the manager of the management unit 7 performs maintenance of the flush toilet 1.

The flow when the flush toilet 1 is clogged in the present embodiment will be described. Normally, when the toilet bowl body 11 is not clogged, the water level of the washing water in the bowl portion 110 is constant and is stored below the bowl portion 110, so that the water level in the washing pipe 2 does not rise. Absent. However, if the toilet bowl body 11 is clogged, it is not drained, so that the water level in the bowl portion 110 rises and may flow into the cleaning pipe 2. In this case, if the user tries to drain the water without noticing that the bowl portion 110 is clogged, the water may overflow from the bowl portion 110.

At this time, the water level detecting unit 3 informs the control unit 5 that the water level has exceeded a predetermined threshold value in a state where the water level in the washing pipe 2 has risen before the water in the bowl unit 110 overflows. The control unit 5 receives a signal from the water level detection unit 3 and controls the toilet bowl cleaning valve 4 to close the toilet bowl cleaning valve 4 and stop the supply of cleaning water. This prevents water from overflowing from the bowl portion 110. The control unit 5 notifies the management unit 7 via the notification unit 6 that the water level detection unit 3 has detected a rise in the water level.

According to the flush toilet 1 according to the first embodiment having the above configuration, the following effects are exhibited.
According to the first embodiment, the flush toilet 1 is configured to include a toilet body 11, a washing pipe 2 connected to the back side of the toilet body 11, and a water level detecting unit 3 provided in the washing pipe 2. did.
Since the cleaning pipe 2 is connected to the back surface of the toilet bowl body 11, the same water level detection unit 3 can be installed on the toilet bowl body 11 having a different shape. Therefore, regardless of the type and shape of the toilet bowl, it is possible to provide a highly versatile flush toilet bowl 1 provided with the water level detection unit 3. Since the water level detection unit 3 is arranged on the back surface of the toilet bowl body 11, the water level detection unit 3 is subjected to an external force when cleaning the flush toilet 1, or a cleaning chemical is applied, which causes a failure. There is no concern that it will cause false detection. Even if water overflows from the toilet bowl body 11, the water level detection unit 3 will not be exposed to water. Since the water level detecting unit 3 is not provided inside the toilet bowl main body 11, it can be easily cleaned. Further, since the water level detection unit 3 is installed in the cleaning pipe 2 extending from the back side of the toilet bowl body 11, the water level detection unit 3 is easily visible and easily accessible, and maintenance such as replacement and cleaning of the water level detection unit at the installation site is performed. Becomes easier.

According to the first embodiment, the cleaning pipe 2 is configured to include a horizontal portion 21 extending in a substantially horizontal direction, and a water level detecting portion 3 is provided in the horizontal portion 21. Since the cleaning pipe 2 has the horizontal portion 21, the water level detecting portion 3 can be easily attached, and the same effect as described above can be obtained.

According to the first embodiment, the water level detection unit 3 is configured to include the detection unit 30 for detecting the water level, and the water level detection position P by the detection unit 30 is set below the overflow surface of the toilet bowl main body 11. As a result, when the toilet bowl body 11 is clogged and the water reaches the overflow surface, water reaches a height inside the cleaning pipe 2 where the water level detection unit 3 is arranged so that the water level detection unit 3 can detect when the water level is high. It will surely be satisfied. Therefore, the same effect as described above is obtained. Therefore, it is possible to reliably detect the water level in a state where the water has overflowed.

According to the first embodiment, the toilet bowl cleaning valve 4 provided in the cleaning pipe 2 and the control unit 5 for controlling the opening and closing of the toilet bowl cleaning valve based on the water level detected by the water level detecting unit 3 are further included. did. As a result, the toilet bowl cleaning valve 4 can be automatically closed based on the detection result of the water level detection unit 3.

According to the first embodiment, the flush toilet 1 is used as a wall-mounted toilet, and the water level detection unit 3 and the toilet flush valve 4 are arranged inside the wall on the back side to which the flush toilet 1 is attached. Since the water level detection unit 3 and the toilet bowl cleaning valve 4 are arranged inside the wall 9, there is no risk of contact during cleaning, and the possibility of erroneous detection is reduced. Since the water level detection unit 3 is not exposed to the outside, the appearance design is not restricted.

According to the first embodiment, while the control unit 5 is supplying the cleaning water by opening the toilet bowl cleaning valve for cleaning the toilet bowl main body 11, the control unit 5 is clogged based on the water level detected by the water level detecting unit. It was configured so that it would not be determined to have occurred. As a result, it is possible to prevent the control unit 5 from erroneously determining that clogging has occurred because the water level detecting unit 3 detects a high water level during cleaning of the toilet bowl main body 11.

According to the first embodiment, the control unit 5 is configured so as not to determine that the toilet bowl main body 11 is clogged when the water level of the water flowing in the cleaning pipe 2 exceeds a predetermined amount. This makes it possible to prevent the control unit 5 from erroneously determining that clogging has occurred even if the water level of the water flowing through the cleaning pipe 2 exceeds a predetermined amount.

According to the first embodiment, when it is determined that the toilet bowl main body 11 is clogged based on the water level detected by the water level detecting unit 3, the notification unit 6 for notifying the clogging is further included. .. When the flush toilet 1 is arranged in a public facility or the like, the notification of the notification unit 6 makes it easy to grasp the status of the flush toilet 1 and facilitates maintenance.

According to the first embodiment, when the washing water is flowing in the washing pipe 2 to wash the toilet bowl main body 11, the water level is detected when the water level of the water flowing in the washing pipe 2 exceeds a predetermined amount. The part 3 was set so as not to detect that the toilet bowl main body 11 was clogged. As a result, when the cleaning water passes through the cleaning pipe 2 in normal use, the water level detecting unit 3 does not detect that clogging has occurred, and malfunction can be prevented.

The present disclosure is not limited to the above-described embodiment, and modifications, improvements, etc. to the extent that the object of the present disclosure can be achieved are included in the present disclosure.

FIG. 3 is an enlarged view of the water level detection unit 3 according to the modified example of the first embodiment. The water level detection unit 3 according to the modified example includes a detection unit 300 which is a float type water level gauge. The detection unit 300 has a stem 310, a float 320, and a stopper 330. In the above embodiment, the float 32 and the stopper 33 are arranged in the first portion 341 of the connecting pipe 34, but in the modified example, the water level detection position P is arranged in the second portion 342. Further, the float 320 and the stopper 330 are also arranged in the second portion 342. Since the float 320 and the stopper 330 are arranged in the second portion 342, the water level detection position P detects the water level in the second portion. The detection unit 300 according to the modified example also exhibits the same operations and effects as those in the above embodiment.

FIG. 4 is a diagram of a flush toilet bowl 1A in the second embodiment. The water level detection unit 3A of the flush toilet 1A does not have to be a float type. For example, an atmospheric pressure sensor that detects the atmospheric pressure inside the cleaning pipe 2 may be attached. When the water level of the bowl portion 110 rises, the air pressure inside the cleaning pipe 2 is compressed and rises. Therefore, the rise in the water level of the bowl portion 110 can also be detected by detecting the atmospheric pressure inside the cleaning pipe 2 with the atmospheric pressure sensor.
Further, as shown in FIG. 4, the flush toilet 1A may be of a type that does not have a toilet seat, a toilet lid, and a functional part. In this case, the control unit 5 and the notification unit 6 that control the toilet bowl cleaning valve 4 according to the detection result of the water level detection unit 3A may be arranged inside the wall surface 9 together with the water level detection unit 3A. Alternatively, it may be arranged below the back side of the toilet bowl body 11. The arrangement of the control unit and the like is not particularly limited.

FIG. 5 is a diagram of a flush toilet bowl 1B according to the third embodiment. For example, the water level detection unit 3B of the flush toilet 1B may be an electrode type. By arranging positive and negative electrodes inside the water level detection unit 3B and conducting electricity when the water level rises, it is possible to detect the rise in the water level of the bowl portion 110. According to the water level detection units 3A and 3B as shown in FIGS. 4 and 5, since there is no movable portion like the float 32 of the above embodiment, there is an advantage that an external force is less likely to be applied and a failure is less likely to occur. The positions of the control unit 5 and the notification unit 6 are not particularly limited as in the case of the flush toilet 1A.

FIG. 6 is a rear view of the flush toilet 1C according to the fourth embodiment. As shown in FIG. 6, the water level detection unit 3C does not have to be attached to the horizontal unit 21. If it is possible to appropriately detect the water level of the cleaning pipe 2, another pipe 23 may be extended or bent diagonally from the horizontal portion 21 of the cleaning pipe 2 so that the water level detecting unit 3C can be detected from there. It may be attached. According to the flush toilet 1C, the degree of freedom in design is widened, and the flush toilet 1C can be installed in response to a request regarding the arrangement of the environment in which the flush toilet 1C is installed.

7A and 7B are views showing a flush pipe 2D and a water level detection unit 3D of the flush toilet 1D according to the fifth embodiment. In the fifth embodiment, the water level detection unit 3D is a vibration-sensitive vibration sensor. The water level detection unit 3D arranges a vibration unit 351 that gives vibration on the outer wall below the cleaning pipe 2D. The vibrating part is, for example, a sound wave, for example, an ultrasonic wave or the like. Then, a water level detection unit 3D that senses the vibration generated by the vibration unit 351 is arranged on the upper outer wall of the cleaning pipe 2D facing the vibration unit 351. As shown in FIG. 7A, in the normal state, the water in the cleaning pipe 2D is on the lower side and is not full, so that the vibration detected by the water level detecting unit 3D is large. As shown in FIG. 7B, when the cleaning pipe 2D is filled with water, the vibration detected by the water level detection unit 3D becomes small. The water level detection unit 3D detects that the water level is rising when the magnitude of vibration is equal to or less than a preset value.

Next, the water level detection unit 3E according to the sixth embodiment will be described with reference to FIGS. 8A and 8B. In the sixth embodiment, the water level detection unit 3E is a temperature sensor. As shown in FIGS. 8A and 8B, the water level detection unit 3E has a pair of temperature sensors 361 and 362 at positions facing the lower outer wall of the cleaning pipe 2E and the upper outer wall of the cleaning pipe 2E, respectively. The processing unit 363 and the processing unit 363 are arranged. The processing unit 363 compares the temperatures detected by the pair of temperature sensors 361 and 362. As shown in FIG. 8A, when the water in the cleaning pipe 2E is normally on the lower side and is not full, the temperature difference between the upper and lower temperature sensors is 2 degrees or more. As shown in FIG. 8B, when the water in the toilet bowl body 11 overflows and the cleaning pipe 2E is filled with water, the temperature difference between the upper and lower temperature sensors 361 and 362 becomes 2 degrees or less. The processing unit 363 detects that the water level is rising when the temperature difference between the temperature sensors 361 and 362 arranged above and below is 2 degrees or less.

Next, the flush toilet 1F according to the seventh embodiment will be described with reference to FIG. In the seventh embodiment, the cleaning pipe 2F is made of resin, and the water level detection unit 3F is an electrode type electrostatic sensor having a pair of electrodes 31F and 32F. The water level detection unit 3F is different from the first to sixth embodiments in that it is provided in the extension portion 22 of the cleaning pipe 2F.

The pair of electrodes 31F and 32F are arranged side by side in the vertical direction at intervals on the side surfaces of the extension portion 22. Normally, the pair of electrodes 31F and 32F are not in contact with water. When clogging occurs, the water level in the bowl portion 110 rises, fills the horizontal portion 21 of the cleaning pipe 2, and rises above the lower side of the extension portion 22. The lower electrode 31F of the pair of electrodes 31F and 32F provided on the extension portion 22 comes into contact with water, and the upper electrode 32F comes into contact with water later than the electrode 31F. By detecting the water level in the extension portion 22, it is possible to detect the clogging of the toilet bowl main body 11 by using the electrostatic sensor, and the same effect as that of the first embodiment is obtained.

Next, the cleaning pipe 2G according to the eighth embodiment will be described with reference to FIG. The cleaning pipe 2G according to the eighth embodiment is different from the first to seventh embodiments in that it has an inclined portion 24 that is inclined obliquely from the downstream end portion of the horizontal portion 21 toward the toilet body 11. The cleaning pipe G is made of resin, and the water level detection unit 3G is common to the seventh embodiment in that it is an electrode type electrostatic sensor.

The pair of electrodes 31G and 32G are arranged side by side in the vertical direction at intervals on the side surfaces of the inclined portion 24. Normally, the pair of electrodes 31G and 32G are not in contact with water. When clogging occurs, the water level in the bowl portion 110 rises, and the extension portion 22 of the cleaning pipe 2G is filled with drainage. The lower electrode 31G of the pair of electrodes 31G and 32G provided on the extension portion 22 comes into contact with water, and the upper electrode 32G comes into contact with water later than the electrode 31G. By detecting the water level in the inclined portion 24, it is possible to detect the clogging of the toilet bowl main body 11 by using the electrostatic sensor 3G, and the same effect as that of the first embodiment is obtained.

Next, the flush toilet 1H according to the ninth embodiment will be described with reference to FIG. The flush toilet 1H is different from the first embodiment in that it is a tank type. The flush toilet 1H has a toilet cleaning tank 4H instead of the flush valve 4 in the first embodiment. Inside the toilet bowl washing tank 4H, although not shown, a ball tap for supplying water, a float for stopping the ball tap, and an overflow for limiting the water level of the washing water and supplying make-up water to the toilet bowl body 11 It houses a pipe, a flapper valve that opens and closes the drain port, a ball chain that pulls up the flapper valve, and a pull-up arm for pulling up the ball chain. When the user gives an instruction to clean the toilet bowl by operating the remote controller or pressing a button, these parts operate in conjunction with each other by a known method, and the toilet bowl body 11 is supplied with cleaning water. ing.

The lower end of the toilet bowl cleaning tank 4H is connected to the cleaning pipe 2H. The cleaning pipe 2H extends downward from the lower end of the toilet bowl cleaning tank 4H and bends toward the toilet bowl main body 11. The cleaning pipe 2 according to the ninth embodiment is made of metal, and the water level detection unit 3H is an electrode type electrostatic sensor provided in the cleaning pipe 2H. The water level detection unit 3H detects the water level from the change in capacitance between the sensor electrode and the GND electrode. The water level detection unit 3H is provided in the cleaning pipe 2H and has a pair of electrodes 31G and 32G and a processing unit 33G. As shown in FIG. 11, one of the pair of electrodes 31H and 32H, the first electrode 31H, is composed of an extension portion 22 of the cleaning pipe 2. The cleaning tube 2 is connected to a GND circuit and serves as a GND electrode. Of the pair of electrodes 31H and 32H, the other second electrode 32H is arranged on the upper surface side of the horizontal portion 21 of the cleaning pipe 2 and is connected to the horizontal portion 21. The second electrode 32H is an electrode for a sensor. The ninth embodiment also has the same effect as that of the first embodiment.

Next, the flush toilet 1I according to the tenth embodiment will be described with reference to FIG. The flush toilet 1I is common to the ninth embodiment in that it is a tank type. The flush toilet 1I is different from the ninth embodiment in that the washing pipe 2I is made of resin, which is common to the seventh and eighth embodiments.

In the tenth embodiment, the water level detection unit 3I is an electrode type electrostatic sensor. The electrostatic sensor has a pair of electrodes 31I, 32I. The pair of electrodes 31I and 32I are arranged side by side in the vertical direction at intervals on the side surfaces of the extension portion 22. Normally, the pair of electrodes 31I and 32I are not in contact with water. When clogging occurs, the water level in the bowl portion 110 rises, fills the horizontal portion 21 of the cleaning pipe 2I, and rises above the lower side of the extension portion 22. The lower electrode 31I of the pair of electrodes 31I and 32I provided on the extension portion 22 comes into contact with water, and the upper electrode 32I comes into contact with water later than the electrode 31I. By detecting the water level in the extension portion 22, the clogging of the toilet bowl main body 11 can be detected by using the water level detection unit 3I, and the same effect as that of the first embodiment can be obtained.

In the above embodiment, the detection unit has been described by taking a float type water level gauge, a barometric pressure sensor, an electrode type sensor, a vibration sensor, and a temperature sensor as examples. The detection unit may have another configuration. The position of the detection unit can also be changed as appropriate. The detection position is preferably below the overflow surface.

In the first embodiment, the water level detection unit 3 is connected to the cleaning pipe 2 with a flange. Not limited to this. The water level detection unit may be connected by welding or the like.

In the above embodiment, the water level detection unit 3 and the toilet bowl cleaning valve 4 are concealed by the wall 9 inside the wall 9. The water level detection unit and the toilet bowl cleaning valve may be arranged inside the wall or may be housed in the cabinet as long as they are connected to the back side of the toilet bowl body.

In the above embodiment, when the water level of the water flowing in the washing pipe 2 exceeds a predetermined amount when the washing water is flowing in the washing pipe 2 to wash the toilet bowl main body 11, the water level detecting unit 3 sets the water level detecting unit 3. It is set not to detect that the toilet bowl body 11 is clogged. However, when a flow path sensor is provided to detect the flow rate of the washing water flowing through the washing pipe and the flow rate detection sensor is operating, even if the detection unit detects the water level, the control unit does not determine that clogging has occurred. It may be configured as follows. Alternatively, if a temperature sensor is provided to detect the temperature of the washing water flowing through the washing pipe and the temperature sensor detects a temperature lower than the threshold value, the control unit is clogged even if the detection unit detects the water level. It may be configured not to judge.

The cleaning pipe may be made of metal or resin, and when the water level detection unit is an electrostatic sensor, the position where the electrode is provided does not matter as long as the water level can be detected.

1 Flush toilet 2 Wash pipe 3 Water level detection unit 4 Toilet bowl cleaning valve 5 Control unit 6 Notification unit 9 Wall 21 Horizontal part 30 Detection unit

Claims (10)

Toilet bowl body and
The cleaning pipe connected to the back side of the toilet body and
A flush toilet equipped with a water level detection unit provided in the washing pipe. The cleaning pipe has a horizontal portion extending in a substantially horizontal direction, and has a horizontal portion.
The flush toilet according to claim 1, wherein the water level detection unit is provided on the horizontal portion. The flush toilet according to claim 1 or 2, wherein the water level detection unit has a detection unit for detecting the water level, and the water level detection position by the detection unit is below the overflow surface of the toilet bowl body. When the water level rises to a predetermined level in the washing pipe, the water level detection unit detects the rise in the water level in the toilet bowl body and detects the rise in the water level.
The predetermined water level is set to a water level obtained by subtracting the water level increased by the washing water supplied to the toilet bowl body at the next washing of the toilet bowl body from the allowable amount of overflow of water in the toilet bowl body. , The water-washing toilet according to any one of claims 1 to 3. Toilet bowl cleaning valve provided in the cleaning pipe and
The flush toilet according to any one of claims 1 to 4, further comprising a control unit that controls opening and closing of the toilet bowl cleaning valve based on the water level detected by the water level detecting unit. The flush toilet is a wall-mounted toilet.
The flush toilet according to claim 5, wherein the water level detection unit and the flush valve are arranged inside a wall on the back side to which the flush toilet is attached. The control unit does not determine that clogging has occurred based on the water level detected by the water level detection unit while the toilet bowl cleaning valve is opened to supply cleaning water for cleaning the toilet body. The flush toilet according to 5 or 6. The flush toilet according to claim 7, wherein the control unit does not determine that the toilet body is clogged when the water level of the water flowing in the cleaning pipe exceeds a predetermined amount. The present invention according to any one of claims 1 to 8, further comprising a notification unit for notifying the clogging when it is determined that the toilet bowl body is clogged based on the water level detected by the water level detection unit. The listed flush toilet. Toilet bowl cleaning valve provided in the cleaning pipe and
A control unit that controls the opening and closing of the toilet bowl cleaning valve based on the water level detected by the water level detection unit is further provided.
The control unit does not determine that clogging has occurred based on the water level detected by the water level detection unit while the toilet bowl cleaning valve is opened to supply cleaning water for cleaning the toilet body. The flush toilet according to any one of 1 to 9.

Images