JP7215132B2 - flush toilet - Google Patents

Description

The present invention relates to a flush toilet device.

A conventional clogging detection device has a water level detection sensor that detects the water level in the toilet bowl, and when the water level detection sensor detects that the water level in the toilet bowl has reached a predetermined water level or higher, technology for determining clogging in the toilet bowl is disclosed. (See Patent Document 1, for example).

JP 2013-072221 A

In addition to the clogging event described above, failure events that occur in the toilet bowl include a seal breaking event in which the water level in the toilet bowl drops and the odor from the drain pipe flows back into the toilet room. The inventors attempted to detect multiple failure events occurring in the toilet bowl with a single sensor.

However, in the case of the configuration of Prior Document 1, the water level to be detected is different when detecting clogging and when detecting seal breaking, so it is difficult to detect multiple states in the toilet bowl with one water level detection sensor. For this reason, it is necessary to separately provide a water level sensor for detecting seal breaking in addition to the water level sensor for detecting clogging.

The present invention has been made to solve the above problems. To provide a toilet device.

In order to achieve the above object, according to the invention of claim 1, there is provided a bowl portion for receiving the excrement of the user, and a pooled water provided in the lower part of the bowl portion for storing pooled water for forming a sealing water. a drainage section provided downstream of the water storage section; a cleaning water supply device for supplying cleaning water to the bowl section; and clogging detection means for detecting clogging of the water storage section or the drainage section and a seal breaking detection means for detecting a breakage state of the sealed water in the water storage part, wherein the clogging detection means and the seal breakage detection means detect the electrostatic capacity of the water in the water storage part. and a determination unit that determines the clogging state and the seal breaking state based on the capacitance of the pooled water detected by the one capacitance sensor. Because the state inside the toilet bowl is determined based on the capacitance of the pooled water (related to the amount of pooled water) instead of the water level, a single sensor can detect multiple An abnormal state (specifically, a clogged state and a sealed state) can be determined.
Further, it is characterized by comprising excretion detection means for detecting the excretion state of the user, wherein the excretion detection means judges the excretion state by the one capacitance sensor and the judging section. Instead, the state of the toilet is determined based on the capacitance of the accumulated water (related to the amount of accumulated water), so a single sensor is used to detect the clogged state and the unsealed state. In addition, the user's excretion state can also be detected.
Further, the excretion detection means detects a first capacitance related to the pooled water in the pooled water portion and a second capacitance related to the user's urine moving in the air toward the pooled water. It is used to determine the excretion state. Normally, when trying to detect the excretion state of the user by detecting only the first electrostatic capacitance related to the pooled water in the pooled water portion, even if urine or stool falls into the pooled water portion, the amount of urine or stool increases, Accumulated water is discharged from the drain. For this reason, since the electrostatic capacity (amount of water) of the pooled water does not substantially change, it is difficult to detect the excretion state of the user. On the other hand, according to the present invention, not only the first capacitance related to the pooled water in the pooled water section, but also the second capacitance related to the user's urine moving through the air toward the pooled water is utilized. Therefore, even if an increased amount of urine or feces or accumulated water is discharged from the drainage part, the change in capacitance can be detected, and the excretion state of the user can be accurately determined.

Further , the excretion detection means is connected to the pooled water via the first capacitance, the second capacitance, and urine of the user moving in the air toward the pooled water. and a third electrostatic capacity related to the user, and the urine of the user moving in the air toward the pooled water. Since the third capacitance related to the user connected to is further used, the change in capacitance can be detected to a greater extent, and the excretion state of the user can be determined more accurately.

Further , the excretion detection means includes the first capacitance, the second capacitance, the third capacitance, and a fourth capacitance related to drainage connected to the pooled water and flowing through the drainage section. By using the capacitance and the above-mentioned excretion state is determined, the fourth capacitance related to the drainage connected to the pooled water and flowing through the drainage part is further used. A change can be detected to a greater extent, and the user's excretion state can be determined more accurately.

According to the present invention, it is possible to provide a flush toilet apparatus capable of detecting a plurality of conditions inside the toilet bowl (clogging, seal breaking, urinating, etc.) with a single sensor.

1 is a perspective view showing the appearance of a flush toilet device of the present invention; FIG. 1 is a system block diagram schematically showing the functional configuration of the flush toilet device of the present invention; FIG. 1 is a perspective view showing a cross section of a flush toilet device of the present invention; FIG. It is a timing chart showing the relationship between the normal state, the clogged state, the broken seal state, and the amount of accumulated water of the flush toilet device of the present invention. FIG. 4 is a cross-sectional view showing the relationship between the clogged state, the broken seal state, and the amount of accumulated water in the flush toilet device of the present invention. FIG. 4 is a cross-sectional view showing the relationship between the state of the flush toilet device of the present invention during excretion and the amount of accumulated water.

FIG. 1 is a perspective view showing the appearance of the flush toilet of the present invention. The overall configuration of the toilet in this embodiment will be described below with reference to FIG.
In the toilet space 1, there is a western-style toilet bowl 2 equipped with normal toilet bowl functions such as a toilet bowl cleaning function, a toilet seat 3 arranged on the upper surface of the western-style toilet bowl 2, and a sanitary washing unit integrally incorporated in the back of the toilet seat 3. A toilet seat device composed of a device 4, a cabinet 5 installed behind the western-style toilet bowl 2, and a wall provided for the user to perform various operations and check various settings and operation content displays. It is composed of an operation/display unit 6 . The cabinet 5 is for storing supplies such as toilet paper, sanitary products, and cleaning tools. A paper roll 7 for holding toilet paper is attached to the wall. A toilet seat 3 made of resin is attached to the upper part of the western-style toilet bowl 2 so as to be vertically rotatable. In this embodiment, the toilet lid that is generally adopted is omitted, but the toilet lid may be attached. Those that do not use toilet lids are used in facilities such as medical institutions, considering that the movement of rotating the toilet lid up and down would be a burden for patients with physical illnesses. Specifications. The operation/display unit 6 is composed of a remote controller 61 for instructing the Western-style toilet bowl to wash the toilet bowl and a remote controller 62 for operating the sanitary washing device.

Using FIG. 2, the operation of each functional part of the flush toilet in this embodiment will be described below.
A trap 21 is placed inside the bowl 23 where the user excretes and discards the toilet paper in the western-style toilet bowl 2 to prevent odors and sanitary pests originating from the drainage pipes of the building (not shown) from entering the toilet space 1. A sealed water is formed by the pooled water 22 . A rim 20 is formed above the western-style toilet bowl 2 . The toilet flushing water supply means 24 that receives city water supplies the western-style toilet 2 with a flushing operation. A toilet flush water supply control means 91 incorporated in the controller 9 instructs the sequence operation to the flush water supply means 24 . The control unit 9 incorporates abnormality determination means (determination unit) 92 . The sequence of the abnormality determination means 92 will be described later.

The abnormality determining means 92 detects an abnormality based on information indicating before and after the washing operation from the operation/display unit 6 and information from the water amount detecting device 7 regarding the water volume of the pooled water 22 . The water amount detection device 7 can detect (estimate) the amount of water by a capacitance sensor with electrodes provided on the outer periphery of the bowl 23 .

FIG. 3 is a perspective view showing a cross section of the flush toilet of the present invention. A trap 21 is formed in a bowl 23 of the western-style toilet bowl 2 to form a pooled water 22. - 特許庁A capacitance electrode 23 for detecting capacitance is provided on the thick outside of the bowl 23 .

FIG. 4 is a timing chart showing the relationship between the normal state, the clogged state, the broken seal state, and the amount of accumulated water in the flush toilet device of the present invention. It will be explained in detail that an abnormal state (clogging state, seal breaking state) is detected by a change in the amount of accumulated water caused by various cases.
Normally, the water level of the pooled water 22 stands by at the overflow water level of the trap 21 . The vertical axis represents the change in the amount of pooled water detected by the capacitance sensor, and the rate of change in water amount by the flushing water supply means 24 is greater than the rate of change in water amount by urine flow, which is described as a representative of excretion. Since the pooled water flows out to the drainage pipe with excretion, the water level does not change, but the amount of pooled water detected by the capacitance sensor increases (details will be described later). After the end of excretion, the user performs the washing start operation, but the amount of water that once increased returns to the original amount of overflowing water after a predetermined period of time.

When clogging occurs in the drainage pipe, the amount of pooled water 22 increases with excretion, as shown in FIG. 5(a). In this state, the user performs the cleaning start operation, but the increased amount of water does not return to the original amount of overflowing water even after a predetermined period of time has passed, so it is understood that the drainage pipe is clogged. In this way, by detecting that the amount of water in the water storage portion has exceeded the first threshold value, it is possible to determine the state of clogging in the toilet bowl using a single capacitance sensor.

Self-siphon occurs when the drain pipe is full of water. When the user starts washing in this state, a negative pressure is generated in the drain pipe, so that the increased water volume not only returns to the original overflow water volume even after a predetermined period of time has passed, but also the water volume decreases further. As shown in FIG. 5(b), the odor inside the drain pipe is in a sealed state in which it diffuses into the toilet space 1. As shown in FIG. In this way, by detecting that the amount of water in the water reservoir has decreased, it is possible to determine the seal breaking state in the toilet bowl with a single capacitance sensor.

FIG. 6 is a cross-sectional view showing the relationship between the state of the flush toilet device of the present invention during excretion and the amount of accumulated water. FIG. 6(a) shows a state in which the capacitance of the pooled water 22 in the bowl 23 is detected for the pooled water in the pooled water portion. The second capacitance in FIG. 6(b) shows a state in which the user's urine 26 moving in the air toward the stagnant water is added. In the case of pulsating intermittent flow, the FIG. It shows a state in which a user 27 connected to is added. The user's capacitance is also added through continuous urine. In addition, although not shown, (drainage 28 connected to the accumulated water and flowing through the drainage section is also added. In this way, the amount of water in the accumulated water section becomes greater than the second threshold, which is less than the first threshold. By detecting that, the excretion state of the user can be determined by one capacitance sensor.

DESCRIPTION OF SYMBOLS 1... Toilet space 2... Western-style toilet bowl 3... Toilet seat 4... Sanitary washing device 5... Cabinet 6... Operation and display part 7... Cigarette container 9... Control part 20... Rim 21... Trap 22... Accumulated water 23... Bowl 24... Toilet bowl Washing water supply means 25 Electrodes 26 Urine of a user moving in the air toward the pooled water 27 A user connected to the pooled water via the urine of a user moving in the air toward the pooled water 28 Clogged state Drainage connected to pooled water and flowing through the drainage section 29 Sealed state Drainage connected to pooled water and flowing through the drainage section 61 Remote control 62 Remote control for sanitary washing device operation 91 Toilet bowl Cleaning water supply control means 92 Abnormality determination means

Claims (3)

a bowl portion for receiving the user's excrement;
a water storage portion provided at the bottom of the bowl portion for storing water for forming a sealing water;
a drainage section provided on the downstream side of the water storage section;
a washing water supply device for supplying washing water to the bowl;
clogging detection means for detecting a clogging state of the water storage portion or the drainage portion;
a seal breakage detection means for detecting a breakage state of the seal water in the water reservoir,
The clogging detection means and the seal breaking detection means are
one capacitance sensor capable of detecting the capacitance of the pooled water in the pooled water portion;
a determination unit that determines the clogging state and the sealing state based on the capacitance of the accumulated water detected by the one capacitance sensor ,
Equipped with excretion detection means for detecting the excretion state of the user,
The excretion detection means determines the excretion state by the one capacitance sensor and the determination unit,
The excretion detection means utilizes a first capacitance related to the pooled water in the pooled water portion and a second capacitance related to the user's urine moving in the air toward the pooled water. to determine the excretion state
A flush toilet device characterized by: The excretion detection means includes the first capacitance, the second capacitance, and the user connected to the pooled water via urine of the user moving in the air toward the pooled water. The flush toilet device according to claim 1 , wherein said excretion state is determined by using a third electrostatic capacitance related to and. The excretion detection means includes the first capacitance, the second capacitance, the third capacitance, and a fourth capacitance related to drainage connected to the pooled water and flowing through the drainage section, The flush toilet device according to claim 2 , wherein the excretion state is determined by using

Images