JPS6136613Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flush water discharge device for a flush toilet, which is equipped with an automatic flush circuit that controls a water supply control valve.

[Prior Art] Conventionally, this type of flushing water discharge device for a flush toilet has a water supply control valve and an automatic flushing circuit that controls the valve, and when a user operates a water supply switch installed in the toilet room. These automatic flushing circuits and water supply control valves were activated to discharge flushing water into the toilet bowl.

[Problems that the invention aims to solve] However, since this automatic cleaning circuit is always connected to a power source and is in a energized state, a certain amount of power is always wasted regardless of whether or not there is a user in the toilet room. This is the result. For example, when examining the usage rate of flush toilets in buildings over the time of day, it is less than 10% during the day, almost 0% at night, and only 5% on average, meaning that they are used most of the time. It is known that the person is absent.

Particularly in the case of high-rise buildings, which require a large amount of energy to suck up washing water, the above-mentioned power wastage is considerable, and has been a major factor hindering energy conservation.

In addition, such wasteful power consumption shortens the lifespan of the various electrical devices that make up the automatic cleaning circuit.Furthermore, the low-frequency noise generated by electrical components such as solenoids while energized is a source of noise in the surrounding area. This resulted in a feeling of discomfort.

The present invention was devised in view of the above circumstances, and its purpose is to provide a flush water discharge device for flush toilets that has a simple configuration and can significantly reduce power consumption. It is in.

[Means for Solving the Problems] As a means for achieving the above object, the present invention installs a body sensor in the toilet room to detect the presence or absence of a user, and operates based on the output signal from the body sensor. A control switch is provided between the automatic cleaning circuit and its power source.

[Operation] In the above configuration, since the control switch is always off, the automatic cleaning circuit is in a non-energized state. However, when the user enters the toilet room,
Immediately, the body sensor detects its presence, turns on the control switch, and switches the automatic cleaning circuit to the energized state.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. In the figure, R is a toilet room, and one or more non-contact body sensors S are disposed at required locations in the room, such as the side wall or the floor. SA is a sensor amplifier that has the function of amplifying the detection signal of the body sensor S and transmitting it to the low-pass filter LPF. The low-pass filter LPF receives the output signal from the body sensor S and processes only the signal component into a signal with a high S/N ratio.Then, this signal is sent to the control switch SW via the waveform shaping circuit Sch, where it is used for automatic cleaning. Power supply control to the circuit OWC and water supply control valve CV is automatically performed depending on the presence or absence of a user.
The body sensor S, low-pass filter LPF, and waveform shaping circuit Sch described above are always kept energized by another power source (not shown). In this case, the power consumed by these is much smaller than the power consumed by the automatic cleaning circuit OWC and the water supply control valve CV.

ELM indicates an earth leakage breaker attached to power supply E, and SW indicates a control switch that operates according to the output of the waveform shaping circuit Sch and has the function of controlling energization to the automatic cleaning circuit OWC and water supply control valve CV. . CS indicates a water supply switch that is installed at an appropriate location in the toilet room R and outputs an operation command to the automatic cleaning circuit OWC as necessary. The automatic cleaning circuit OWC operates upon receiving a signal from this water supply switch, and outputs a control signal to the water supply control valve CV. Thereby, the water supply control valve CV adjusts the amount of water supplied from the water supply port W to discharge flush water into the toilet bowl Q. In addition, the automatic cleaning circuit shown in the diagram
The OWC and water supply control valve CV correspond to one toilet room R and one toilet bowl Q, and do not discharge flush water to multiple toilet bowls at the same time.

Next, the overall operation of this embodiment will be explained.

First, when no user is in the toilet room R, the sensor amplifier SA, low-pass filter LPF, and waveform shaping circuit Sch do not operate due to the action of the body sensor S as described above, so the control switch SW
is held in the "off" state. Therefore, the power supply to the automatic control circuit OWC and the water supply control valve CV is "off", and no power is consumed in this state.

Next, when the user enters the toilet R, the body sensor S
For example, a "high level signal" is output to the sensor amplifier SA. As a result, the sensor amplifier SA operates as described above, and an operating signal is output to the control switch SW by the functions of the low-pass filter LPF and the waveform shaping circuit Sch. This turns the control switch SW into the "on" state, turning on the power to the automatic cleaning circuit OWC and the water supply control valve CV. And from this point on, the automatic cleaning circuit
When the OWC and water supply control valve CV become operational, and the user turns on the water supply switch CS, the automatic flushing circuit OWC is activated and flush water is discharged into the toilet bowl Q by the action of the water supply control valve CV as described above. do. Then, when the user leaves the toilet R, the body sensor S causes the sensor amplifier SA to
For example, a "low level signal" is output, and due to the action of the low pass filter LPF and waveform shaping circuit Sch,
The control switch SW becomes "off" again. This allows automatic cleaning circuit OWC and water supply control valve CV
The power is turned off and the device returns to its initial state.

In addition, in this embodiment, the body sensor S is installed in the toilet room R.
We explained the case where it is installed on the side wall or floor of
The location is not limited to this, but may be any location where the presence of a user who has entered the toilet room R can be detected. Furthermore, although the body sensor is of a non-contact type, other types may be used as long as they function similarly.

[Effects of the invention] As described above, according to the invention, the automatic cleaning circuit can be kept de-energized at all times and energized only when the user is in the toilet room.
There is no wasted power consumption, and the lifespan of electrical equipment constituting the automatic cleaning circuit can be extended. Furthermore, generation of low frequency noise due to solenoids and the like can be suppressed to the minimum necessary time.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of a flush water discharge device for a flush toilet according to the present invention. R...Toilet room, CS...Water supply switch, CV...Water supply control valve, OWC...Automatic cleaning circuit, Q...Toilet bowl, S...Body sensor, SW...Control switch, E...Power supply.

Claims (1)

[Scope of utility model registration request] A flush toilet is equipped with an automatic flushing circuit that controls a water supply control valve based on an output signal from a water supply switch installed in the toilet room, and flush water is discharged into the toilet bowl when the user operates the water supply switch. In the wash water discharge device, a body sensor is installed in the toilet room to detect the presence or absence of a user,
A flush water discharge device for a flush toilet, characterized in that a control switch operated based on an output signal from the body sensor is provided between the automatic flush circuit and its power source.