JPH05280082A - Automatic cleaning control device for sanitary device - Google Patents

Abstract

PURPOSE:To normally operate in the range of commercial power supply voltage 100-240(V), concerning an automatic washing control device of a sanitary device such as a water washing urinal for man or a wash stand. CONSTITUTION:A human detecting sensor 6 detects the user of a sanitary device. Cleaner is supplied to the sanitary device when an electromagnetic opening/ closing valve 4 is opened. The electromagnetic opening/closing valve 4 is driven by a valve drive circuit 23. By controlling the valve drive circuit 23 by means of a microcomputer 22 based on the detection of the human detecting sensor 6, the electromagnetic opening/closing valve 4 is controlled so as to supply cleaner to the sanitary device for a certain time. Respective constant voltage circuits 20, 21 respectively supply stable direct current voltage VS1, VS2 in the range of commercial source voltage 100-240(V). Further, a smoothing condenser 10 can store electric energy capable of operating two times of automatic washing even at outage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cleaning control device for various sanitary appliances such as flush toilets and wash basins.

[0002]

2. Description of the Related Art In recent years, in flushing urinals for men (hereinafter referred to as "morning glory") such as public toilets, a device for automatically cleaning the morning glory has been used.

That is, a person who intends to add a small use (hereinafter,
When the user) stands in front of the morning glory, it detects it and flushes the morning glory with water for a certain period of time (hereinafter referred to as "pre-wash"). This makes it possible for the user to comfortably add small amounts and keeps the morning glory from getting dirty. Then, when the user finishes the small dose and leaves from the front of the morning glory, it is detected and water is flushed for a certain period of time to wash the morning glory (hereinafter referred to as “post-wash”).

A reflection type optical sensor is used for detecting that the user stands in front of the morning glory and for detecting that the user has left the morning glory. That is, the light emitting element of the light sensor projects light in front of the morning glory, and the light receiving element of the light sensor detects the reflected light. When the user stands in front of the morning glory, the projection light from the light emitting element is reflected by the user. On the other hand, when there is nobody in front of the morning glory, the projected light from the light emitting element does not reflect and the light receiving element cannot detect the reflected light. Therefore, the presence of the user can be detected by detecting the presence or absence of the reflected light.

Such automatic cleaning control devices include those using a battery as a power source and those using a commercial power source. When a commercial power source is used, a power source section including a power transformer, a rectifier, and a smoothing circuit is provided in the automatic cleaning control device.

A single-phase commercial power source has a voltage of 100 [V] and 20V.
There are two types, 0 [V], but since the power consumption of the automatic cleaning control device is small, a commercial power supply of 100 [V] is usually used.

[0007]

By the way, when the above automatic cleaning control device is installed, the operator mistakenly sets the
It may be connected to a commercial power supply of [V].

Then, an overvoltage is applied to the automatic cleaning control device, which may cause malfunction such as the washing water not stopping, or in the worst case, damage. Therefore, it is conceivable to provide a fuse or breaker on the primary side of the power transformer. However, when the fuse is provided, it is necessary to replace the fuse that is blown due to the application of the overvoltage, which is troublesome. Further, when the breaker is provided, there is a problem that the cost of the parts is increased correspondingly and the device is enlarged.

When exporting this automatic cleaning control device, the specifications of the power supply unit must be changed according to the commercial power supply voltage of the exporting country. Except for a few exceptions, commercial power supply voltage in foreign countries is 100-120 [V] group (US 120 [V]) and 200-240 [V] group (UK 240 [V], 220 EC countries
[V]).

Therefore, by providing two secondary windings of the power transformer and changing the connection according to the primary (commercial power supply) voltage, 100 to 120 [V], 200 to 240
[V] It can be considered to be shared. However, since the power transformer for that purpose becomes large in size, there is a problem that the cost of parts increases correspondingly and the device also becomes large in size. Further, changing the connection of the secondary side of the power transformer for each destination of the automatic cleaning control device has a problem that the manufacturing process and product management become complicated.

Therefore, the power transformer is 200-240.
When it is used for [V] and is used with a commercial power supply of 100 to 120 [V], it can be considered that the voltage is lowered to a predetermined voltage by a resistor provided inside the device. However, connecting a resistor for each destination of the automatic cleaning control device has a problem that the manufacturing process and product management are complicated.

The present invention has been made to solve the above problems, and an object thereof is 100 to 240 [V].
Another object of the present invention is to provide an automatic cleaning control device for sanitary ware which can operate normally within the range of the commercial power supply voltage, by a simple configuration.

[0013]

In order to solve the above problems, the present invention provides a person detecting means for detecting a user of a sanitary appliance, a cleaning body supplying means for supplying a cleaning body to the sanitary appliance, and a cleaning means. By controlling the drive means based on the drive means for driving the body supply means and the human detection means, the wash body supply means is controlled so that the wash body is supplied to the sanitary ware only for a certain period of time. An automatic cleaning control device for sanitary ware comprising a control means, a power transformer for converting a commercial power source into a direct current and supplying it to each means, a power source device comprising a rectifier and a smoothing capacitor, even when the commercial power source fails. A voltage stabilizing unit is provided between the power supply unit and each unit, in which a capacity of the smoothing capacitor is determined so that each unit can operate, and a voltage stabilizing unit for converting the power supply voltage of the power unit to a constant voltage and supplying the voltage to each unit. Automatic cleaning control device for sanitary appliances, characterized in that.

[0014]

Therefore, according to the present invention, the power supply voltage supplied to each means is made constant by the voltage stabilizing means. Therefore, as long as the voltage of the commercial power supply is within the operable voltage range of the voltage stabilizing means, each means can operate normally without being affected by the fluctuation of the commercial power supply voltage.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a morning glory will be described below with reference to FIGS. FIG. 2 shows an attachment state of the morning glory 1 of this embodiment.

The morning glory 1 is attached to the front side of the wall surface 2 of the washroom, and the water supply pipe 3 connected to the morning glory 1 has an electromagnetic opening / closing valve 4 attached thereto.
Are connected. When the electromagnetic opening / closing valve 4 is opened, the washing water is supplied from the water supply pipe 3 to the bosh 1. On the contrary, when the electromagnetic opening / closing valve 4 is closed, the supply of washing water from the water supply pipe 3 to the bosh 1 is shut off.

The control box 5 is a wall surface 2 slightly above the morning glory 1.
Is attached to the back side of the control box 5, and the surface plate 5a of the control box 5 is attached to the wall surface 2
Is exposed to. The front plate 5a is provided with a human detection sensor 6 including a light emitting element 6a and a light receiving element 6b.
A controller 7 and a power supply device 8 are provided inside.

FIG. 1 shows an electric block circuit diagram of the automatic cleaning control apparatus of this embodiment. The power supply device 8 includes a rectifier 9 including a diode bridge, a smoothing capacitor 10, a surge absorber 11, and a power supply transformer 12. The power supply transformer 12 is a transformer for the primary side voltage of 240 [V]. Further, the capacity of the smoothing capacitor 10 is set so that the electromagnetic opening / closing valve 4 can store enough electric energy to operate twice. Then, the power supply device 8 converts alternating current from the commercial power supply into an appropriate voltage of direct current and supplies it to the constant voltage circuits 20 and 21 in the controller 7.

Each of the constant voltage circuits 20 and 21 is composed of a three-terminal regulator, and operates normally if the output voltage VB of the power supply device 8 is a constant value (= operable voltage VO) or more. Then, during normal operation, the constant voltage circuit 20 controls the control circuit 22 in the controller 7.
To the valve drive circuit 23 in the controller 7, and the constant voltage circuit 21 supplies the constant voltage VS2 to the valve drive circuit 23 in the controller 7.

The valve drive circuit 21 outputs a drive signal VD based on the control signals Va and Vb from the control circuit 22. The electromagnetic on-off valve 4 is opened when the drive signal VD is positive, and the electromagnetic on-off valve 4 is closed when the drive signal VD is negative. When the drive signal VD is not output, the open / closed state of the electromagnetic on-off valve 4 before that is maintained as it is.

FIG. 3 shows the voltage of each part when the electromagnetic on-off valve 4 is opened and closed. (A) is the output voltage VB of the power supply device 8 when the 240 [V] commercial power supply is used. Also,
(B) is the output voltage VB of the power supply device 8 when a commercial power supply of 100 [V] is used. When the electromagnetic on-off valve 4 is in operation (closed to open operation), the valve drive circuit 21 outputs a positive drive signal VD (pulse width 20 msec) as shown in (C). Since the terminal voltage of the solenoid on-off valve 4 has an overshoot and an undershoot due to the inductance, the voltage is as shown in (D).

As shown in (A) and (B), the solenoid opening / closing valve 4
The output voltage VB decreases during the operation of the. Therefore, the capacities of the power transformer 12 and the smoothing capacitor 10 are set so that the lowered output voltage VB does not fall below the operable voltage VO of the constant voltage circuits 20 and 21.

FIG. 4 shows an internal circuit of the control circuit 22.
The light emission drive circuit 31 outputs a light emission signal SF having an appropriate frequency. The light emitting element 6a emits light based on the light emission signal SF.

When the user stands in front of the morning glory 1, the projection light from the light emitting element 6a is reflected by the user.
Then, the light receiving element 6b including the phototransistor is
The reflected light is detected and a detection signal SK is output. on the other hand,
When the user is not standing in front of the morning glory 1, the light emitting element 6a
Since the projected light from is not reflected and the light receiving element 6b cannot detect the reflected light, it does not output the detection signal SK.

The amplifier 32 amplifies and outputs the detection signal SK from the light receiving element 6b. The waveform shaping circuit 33 is the amplifier 3
The output signal of No. 2 is waveform shaped and output. The integrating circuit 34 including the resistor R1 and the capacitor C1 includes a waveform shaping circuit 33.
The integrated waveform of the output signal of is output.

The inverter circuit 35 inverts the output signal of the integrating circuit 34 and outputs it. The control signal generation circuit 36 is composed of a monostable multivibrator, and includes an inverter circuit 3
The control signals Va and Vb are generated from the output signal 5 and output. That is, the control signal generation circuit 36 generates the control signal Va having a pulse width of 20 msec in synchronization with the rising or falling of the output signal of the inverter circuit 35. Then, the control signal generation circuit 36 uses the external capacitor C2.
According to the time constant τ1 determined by the resistance R2 and the resistor R2, the control signal Vb having a pulse width of 20 msec is generated after a predetermined time from the generation of the control signal Va. Since the resistor R2 is a variable resistor, the time constant τ1 can be easily changed. Therefore, the time intervals at which the control signals Va and Vb are output can be easily changed by adjusting the resistor R2.

Next, the operation of the automatic cleaning control device constructed as described above will be described with reference to FIG. Whether the user is standing in front of the morning glory 1 or not, the light emission drive circuit 3
1 outputs a light emission signal SF having an appropriate frequency. The light emitting element 6a emits light based on the light emission signal SF.

When nobody is in front of the morning glory 1, the light emitting element 6
The projected light from a does not reflect, and the light receiving element 6b cannot detect the reflected light, so it does not output the detection signal SK. Then, when the user stands in front of the morning glory 1, the projection light from the light emitting element 6a is reflected by the user. Then, the light receiving element 6b
Detects the reflected light and outputs a detection signal SK. The amplifier 32 amplifies the detection signal SK and outputs a comb-shaped output signal.

The output signal of the integrating circuit 34 has an integrated waveform obtained by dividing the integrated value of the output signal of the amplifier 32 by the time constant τ2 determined by the resistor R1 and the capacitor C1. Integrating circuit 3
4 is the threshold voltage Vth of the inverter circuit 35.
Inverter circuit 35 outputs a high-level output signal until it reaches. When the output signal of the integrating circuit 34 exceeds the threshold voltage Vth of the inverter circuit 35, the output signal of the inverter circuit 35 falls from the high level to the low level.

The control signal generating circuit 36 outputs the control signal Va in synchronization with the fall of the output signal of the inverter circuit 35. The valve drive circuit 21 has its control signal Va
Based on the above, the positive drive signal VD is output. The electromagnetic opening / closing valve 4 is opened according to the drive signal VD, and the washing water is supplied from the water supply pipe 3 to the bosh 1 for pre-washing.

Therefore, if the time constant τ2 of the integrating circuit 34 is increased, the rising edge of the output signal of the integrating circuit 34 becomes gradual, and the time from when the user stands in front of the morning glory 1 until the washing water is supplied. Time will increase. On the contrary, when the time constant τ2 of the integrating circuit 34 is reduced, the rising edge of the output signal of the integrating circuit 34 becomes steep, and the time from when the user stands in front of the morning glory 1 to when the washing water is supplied is shortened. ..

Next, the control signal generation circuit 36 determines the time constant τ
According to 1, the control signal Vb is generated after a predetermined time from the generation of the control signal Va. The valve drive circuit 21 has its control signal V
The minus drive signal VD is output based on b. The electromagnetic on-off valve 4 is closed according to the drive signal VD, and the supply of washing water to the bosh 1 is cut off. Then, the electromagnetic on-off valve 4 is maintained in the closed state.

After that, the user finishes the small amount of use and the morning glory 1
When it goes away from before, the projection light from the light emitting element 6a is not reflected and the light receiving element 6b does not output the detection signal SK.

Then, the output signal from the amplifier 32 is also cut off, and the output signal of the integrating circuit 34 falls according to the time constant τ2. When the output signal of the integration circuit 34 falls below the threshold voltage Vth of the inverter circuit 35, the output signal of the inverter circuit 35 rises from low level to high level.

The control signal generating circuit 36 outputs the control signal Va in synchronization with the rising of the output signal of the inverter circuit 35. The valve drive circuit 21 has its control signal Va
Based on the above, the positive drive signal VD is output. The electromagnetic opening / closing valve 4 is opened according to the drive signal VD, and the washing water is supplied from the water supply pipe 3 to the bosh 1 for post-washing.

Next, the control signal generation circuit 36 determines the time constant τ.
According to 1, the control signal Vb is generated after a predetermined time from the generation of the control signal Va. The valve drive circuit 21 has its control signal V
The minus drive signal VD is output based on b. The electromagnetic on-off valve 4 is closed according to the drive signal VD, and the supply of washing water to the bosh 1 is cut off. Then, the electromagnetic on-off valve 4 is maintained in the closed state.

As described above, in the present embodiment, when the user stands in front of the morning glory 1, the morning glory 1 is washed (pre-wash), and when the user who has finished the small dose leaves from the morning glory 1 again, the morning glory 1 is washed again. Can be washed (post-wash).

Since the constant voltage circuits 20 and 21 are provided, when the commercial power supply voltage is in the range of 100 to 240 [V], the control circuit 22 is supplied with the constant voltage VS1 and the valve drive circuit 23. Is supplied with a constant voltage VS2. Therefore, 100
The automatic cleaning operation can be normally performed within the range of the commercial power supply voltage of 240 to 240 [V].

Further, since the smoothing capacitor 10 has accumulated enough electric energy to operate the electromagnetic on-off valve 4 twice, the electromagnetic on-off valve 4 remains open and the washing water does not stop at the time of power failure. Can be prevented.

The present invention is not limited to the above embodiment, but may be implemented as follows, for example. 1) Not only the morning glory 1 but also an automatic cleaning control device for various sanitary appliances such as a washbasin.

2) Only one of the pre-cleaning and the post-cleaning is performed. 3) Replace each constant voltage circuit 20, 21 with one constant voltage circuit. That is, the current capacity of the constant voltage circuit 20 is increased and the constant voltage circuit 21 is omitted. Then, the valve drive circuit 23 is supplied with power from the constant voltage circuit 20 having a large current capacity. Further, the constant voltage circuit 21 may be omitted while increasing the current capacity of the constant voltage circuit 21. In that case, the power supply voltage VS1 of the control circuit 22 and the valve drive circuit 2
3 may be equal to the power supply voltage VS2.

4) Each control signal Va, Vb and drive signal V
The pulse width of D is set appropriately instead of 20 msec.

[0043]

As described above in detail, according to the present invention, 1
There is an excellent effect that an automatic cleaning control device for sanitary appliances that can normally operate within a commercial power supply voltage range of 00 to 240 [V] can be provided with a simple configuration.

[Brief description of drawings]

FIG. 1 is an electric block circuit diagram showing an automatic cleaning control device according to an embodiment of the present invention.

FIG. 2A is a partially cutaway side view showing a mounted state of the flush urinal for men according to an embodiment of the present invention, and FIG. 2B is a front view of the same.

FIG. 3 is a waveform diagram showing the voltage of each part when the electromagnetic on-off valve 4 opens and closes.

FIG. 4 is an electric block circuit diagram showing an internal circuit of the control circuit 22.

FIG. 5 is a waveform chart of an automatic cleaning operation.

[Explanation of symbols]

1 ... morning glory as sanitary equipment, 3 ... water supply pipe as cleaning liquid supply means, 4 ... electromagnetic on-off valve as cleaning liquid supply means,
6 ... Human detection sensor as human detection means, 8 ... Power supply device,
9 ... Rectifier, 10 ... Smoothing capacitor, 12 ... Power transformer, 20, 21 ... Constant voltage circuit as voltage stabilizing means, 22 ... Control circuit as control means, 23 ... Valve drive circuit as driving means

Claims (1)

[Claims] 1. A person detecting means (6) for detecting a user of the sanitary equipment (1), a cleaning body supply means (3, 4) for supplying a cleaning body to the sanitary equipment (1), Drive means (2) for driving the cleaning body supply means (3, 4)
3) and by controlling the driving means (23) based on the detection of the human detection means (6), the cleaning body is supplied to the sanitary equipment (1) for a certain period of time. A control means (22) for controlling the cleaning body supply means (3, 4), a power transformer (12) for converting a commercial power source into a direct current and supplying it to the respective means, a rectifier (9), and a smoothing capacitor (1).
In the automatic cleaning control device for sanitary ware composed of the power supply device (8) and the power supply device (8), the capacity of the smoothing capacitor (10) is determined so that each of the means can operate even when the commercial power supply fails. At the same time, a voltage stabilizing means (20, 21) for making the power supply voltage of the power supply device (8) a constant voltage and supplying it to each of the means is provided between the power supply device (8) and each of the means. Automatic cleaning control device for sanitary ware.