JP2003027556A - Toilet bowl cleaning device with electrolytic water supply function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toilet bowl cleaning device with the electrolytic water supply function capable of preventing the occurrence of darkish image of a toilet bowl, and capable of accurately obtaining a required sterilizing/stain- proofing effect without enhancing the unnecessary ion concentration in electrolytic water even in water of any quality. SOLUTION: This toilet bowl cleaning device is provided with a water supply pipe 5 for supplying wash water to a urinal 4, a solenoid valve 2 arranged in the middle of the water supply pipe, and discharging and cutting off the wash water, an electrolytic bath 3 arranged between the solenoid valve 2 and the urinal 4, and composed of a pair of silver electrodes 3a and 3b for eluting silver ions by electrolysis, a human body sensor 14 for detecting that a person uses the urinal 4, and a control device 1 for controlling the solenoid valve 2, the electrolytic bath 3, and the human body sensor 14, and measures electric conductivity of the water by performing electrolytic preliminary cleaning before performing electrolytic cleaning for simultaneously driving the solenoid valve 2 and the electrolytic bath 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet bowl cleaning device with an electrolytic water cleaning function, and more particularly to an electrolytic water control device that determines electric power to be electrolyzed by the electric conductivity of water.

[0002]

2. Description of the Related Art A conventional toilet bowl cleaning device of this type is disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 000-204633, a target current value is corrected by supplying electric power from a constant current power source to an electrolysis means at the time of cleaning electrolytic water and measuring the voltage of the electrolysis means at that time. Things are known.

[0003]

However, in the conventional toilet bowl cleaning device, first, electrolysis is performed by a predetermined current at the start of electrolytic water cleaning. At this time, the concentration of the bactericidal metal ion eluted from the electrode is water quality. , Especially, it has a strong correlation with the electrical conductivity of water, and if the electrical conductivity of water is high, the concentration of eluted metal ions will be low, and if the electrical conductivity of water is low, the concentration of metal ions will be high. The metal ion concentration in the electrolyzed water at the start of washing with water was very high. If the concentration of metal ions in the electrolyzed water becomes unnecessarily high, the metal ions adhere to the toilet bowl, resulting in darkening of the toilet bowl.

The present invention has been made to solve the above problems, and an object of the present invention is to optimize the electrolytic water cleaning from the start point by knowing the electric conductivity of water before performing electrolytic water cleaning. Electrolyzed water can be electrolyzed with various electric currents, and the toilet bowl can be washed with electrolyzed water with an optimum ion concentration to obtain the necessary sterilization and antifouling effect more accurately without causing darkening of the toilet bowl. To provide a toilet bowl cleaning device with a function.

[0005]

To achieve the above object, a first invention is to provide a toilet bowl, a toilet flush water supply channel for supplying toilet flush water to the toilet bowl, and a toilet flush water supply channel. Wash water supply means for supplying the wash water, electrolysis means arranged in the toilet wash water supply passage for eluting sterilizing metal ions by electrolysis, and electrolysis power supply for controlling the power supplied to the electrolysis means Means, control means for controlling the cleaning water supply means and the electrolytic power supply means, and electrolytic water cleaning for simultaneously driving the cleaning water supply means and the electrolytic power supply means, and only the cleaning water supply means In a toilet bowl cleaning device capable of freely switching between non-electrolytic water cleaning for driving, the control means has an electrolytic pre-cleaning function for performing the non-electrolytic water cleaning a predetermined time before performing the electrolytic water cleaning. , Toilet bowl To perform the dirty water once electrolytic water washing after replacing, it becomes possible to obtain higher sterilization antifouling effect.

A second aspect of the invention is a toilet bowl cleaning device including voltage measuring means for measuring a voltage applied to the electrolysis means, wherein the control means drives the electrolysis power supply means during the electrolysis precleaning, and at that time. It has a function of calculating the electric conductivity of water by the detection voltage of the voltage measuring means, and determining the target current to be supplied to the electrolysis means at the time of the electrolytic water cleaning based on the electric conductivity. Since it is possible to determine the target current before carrying out, it is possible to perform electrolysis at the optimum current value from the beginning of electrolytic water cleaning.

In a third aspect of the present invention, in the toilet bowl cleaning device provided with voltage measuring means for measuring the voltage applied to the electrolyzing means, the control means controls the electrolysis power after a lapse of a predetermined time from the start of the electrolytic precleaning. A function of driving the supply means, calculating the electric conductivity of water by the detection voltage of the voltage measuring means at that time, and determining a target current to be supplied to the electrolysis means at the time of cleaning the electrolytic water based on the electric conductivity. Since it is provided, the target current is not determined when the flow rate immediately after the start of cleaning is unstable, so that a more accurate target current can be obtained.

In a fourth aspect of the invention, the control means controls the electric conductivity of water by the detection voltage of the voltage measuring means at a time point when a predetermined time has elapsed after driving the electrolysis power supply means during the electrolytic precleaning. Since it has a function of calculating and determining the target current to be supplied to the electrolysis means at the time of cleaning the electrolyzed water based on the electric conductivity, the target current can be determined after the detection voltage is sufficiently stabilized. Therefore, a more accurate target current can be obtained.

In a fifth aspect of the present invention, since the electric power supplied from the electrolytic power supply means at the time of the electrolytic pre-cleaning is a predetermined first predetermined current, the electric conductivity can be calculated more easily. Is possible.

In a sixth aspect of the invention, the first predetermined current supplied from the electrolytic power supply means during the electrolytic precleaning is the lower limit of the current value supplied from the electrolytic power supply means during the electrolytic water cleaning. Since it is set smaller than the value,
Since the electrolyzed water having an ion concentration higher than necessary for supplying the target current is not supplied, it is possible to prevent the darkening of the toilet bowl.

In a seventh aspect of the present invention, the control means supplies the first predetermined current during the electrolytic pre-cleaning, and if the voltage detected by the voltage measuring means is lower than the first predetermined voltage, the control means continues. A second predetermined current set to be larger than the first predetermined current is supplied, the electric conductivity of water is calculated by the detection voltage of the voltage measuring means at that time, and the electrolysis is performed based on the electric conductivity. Since it has a function to determine the target current to be supplied to the electrolysis means at the time of washing with water, if the measured voltage is small and the electrical conductivity cannot be accurately calculated, increasing the supplied current increases the measured voltage. , Can calculate the electric conductivity more accurately,
Since the electrolyzed water having the optimum ion concentration can be supplied, it is possible to obtain sufficient sterilization and antifouling effects and prevent darkening of the toilet bowl.

In an eighth aspect of the present invention, the control means is configured such that, after a lapse of a predetermined time from the start of the supply of the second predetermined current, the control means controls the water level by the voltage detected by the voltage measuring means. Since it has a function of calculating the electric conductivity and determining the target current to be supplied to the electrolyzing means during the electrolysis water cleaning based on the electric conductivity, the current immediately after switching the current is unstable. Since the target current is not set, a more accurate target current can be set, a sufficient sterilization and antifouling effect can be obtained, and darkening of the toilet bowl can be prevented.

In a ninth aspect, the control means supplies the first predetermined current during the electrolytic precleaning, and the voltage detected by the voltage measuring means is set higher than the first predetermined voltage. When the voltage is higher than the second predetermined voltage, it has a function of detecting an open abnormality of the electrolysis means and setting the target current to the lower limit value of the current value supplied from the electrolysis power supply means during the electrolytic water cleaning. Therefore, even if water is not passed through the electrolysis means due to temporary water cutoff or the like, if the water cutoff state is restored, washing can be performed with the electrolyzed water.

In a tenth aspect of the invention, in the toilet bowl cleaning device in which the voltage measuring means has a switchable amplification coefficient, the control means supplies the second predetermined current during the electrolytic precleaning, and the voltage measuring means. When the detected voltage is lower than a predetermined voltage, the amplification coefficient is increased, the electric conductivity of water is calculated by the detected voltage of the voltage measuring means at that time, and the electrolytic water cleaning is performed based on the electric conductivity. Since it has a function of sometimes determining the target current to be supplied to the electrolysis means, if the detected voltage is still low and the calculation accuracy of the electrical conductivity is not sufficient even if the current is increased, the current to be supplied is further increased. Since it is possible to increase the detection voltage without further increasing the ion concentration of, it is possible to calculate the electrical conductivity more accurately and supply electrolyzed water with the optimum ion concentration. Since it is Rukoto, sufficient sterilization and
It is possible to obtain an antifouling effect and prevent darkening of the toilet bowl.

An eleventh aspect of the invention is a toilet bowl cleaning device in which the voltage measuring means has a switchable amplification coefficient, the control means supplies the second predetermined current during the electrolytic precleaning, and the voltage measuring means. When the detected voltage is lower than a predetermined voltage, the electric conductivity of water is calculated by the voltage detected by the voltage measuring means after a lapse of a predetermined time after increasing the amplification coefficient, and the electric conductivity is calculated. Since it has a function of determining the target current to be supplied to the electrolysis means at the time of cleaning the electrolyzed water, the target current is not set in a state where the detected voltage immediately after switching the amplification coefficient is unstable. Since it is possible to calculate the electric conductivity more accurately and to supply the electrolyzed water with the optimum ion concentration, it is possible to obtain sufficient sterilization and antifouling effects and to cause darkening of the toilet bowl. It can be prevented to become.

In a twelfth aspect of the present invention, the control means supplies the second predetermined current during the electrolytic precleaning, increases the amplification coefficient of the voltage measuring means, and then detects the voltage by the voltage measuring means. When the voltage is lower than a predetermined voltage, the electrolysis means has a function of stopping driving of at least the electrolysis power supply means as a short circuit abnormality of the electrolysis means, and stopping the electrolysis water cleaning. When a foreign substance or the like is mixed and a short circuit occurs, electrolysis is not continued, and thus it is possible to safely stop the electrolysis.

In a thirteenth aspect of the present invention, the second predetermined current is supplied during the electrolytic precleaning to increase the amplification coefficient of the voltage measuring means, and then the voltage detected by the voltage measuring means is lower than the predetermined voltage. If it is low, as a short circuit abnormality of the electrolysis means, at least the drive of the electrolysis power supply means is stopped, and since it has a function of performing the non-electrolytic water cleaning instead of the electrolytic water cleaning, In case of short circuit due to conductive foreign matter etc., electrolysis does not continue, so it is possible to stop safely and replace dirty water in the toilet with non-electrolytic water. It is possible to prevent deterioration of the antifouling effect to a minimum.

In a fourteenth aspect of the present invention, the control means has a function of setting a target current value to the predetermined current when the target current obtained based on the electric conductivity is larger than a predetermined current. Since the electrolyzed water does not have an ion concentration higher than necessary, it is possible to prevent darkening of the toilet bowl.

In a fifteenth aspect, the control means has a function of stopping the drive of the electrolysis power supply means when the target current to be supplied to the electrolysis means during the electrolytic water cleaning is determined during the electrolytic precleaning. Since it is provided, electrolysis is not continued unnecessarily, and it is possible to prevent darkening of the toilet bowl.

A sixteenth aspect of the invention is a toilet bowl cleaning device including current measuring means for measuring a current value supplied to the electrolytic means, wherein the control means detects from the current measuring means during the electrolytic water cleaning. Since the current has a function of controlling the electrolysis power supply means so as to reach the target current value determined during the electrolytic precleaning, electrolysis can be performed with a more accurate current, and electrolysis with an optimum ion concentration can be performed. Since water can be supplied, it is possible to obtain sufficient sterilization and antifouling effects and prevent darkening of the toilet bowl.

In a seventeenth aspect of the present invention, the control means controls the proportional / integral correction operation or the proportional / integral / differential correction operation so that the deviation between the target current value and the detected current value from the current measuring means becomes zero. Since it has a function of controlling the electrolysis power supply means according to the calculation result, electrolysis can be performed by a more accurate current, and electrolyzed water having an optimum ion concentration can be supplied, so that it is sufficient. It is possible to obtain sterilization and antifouling effects and prevent darkening of the toilet bowl.

In an eighteenth aspect of the present invention, the control means sets a predetermined control amount of the electrolytic power supply means and a current supplied to the electrolysis means for a predetermined time from the start of the electrolytic water cleaning. The electrolytic power supply means is controlled by the control amount of the electrolytic power supply means determined by a relational expression, and after a predetermined time has elapsed, the electrolytic power supply means is operated based on the result of the proportional / integral correction calculation or the proportional / integral / differential correction calculation. Since it has a function to control, by correcting the control amount of the electrolytic power supply means in a state where the cleaning flow rate at the start of electrolytic water cleaning is unstable, the electrolytic water has an ion concentration higher than necessary,
It is possible to prevent darkening or the like from occurring in the toilet bowl.

In a nineteenth aspect of the invention, the control means has a relationship between a predetermined control amount of the electrolysis power supply means and a current supplied to the electrolysis means for a predetermined time from the start of the electrolytic water cleaning. A function to control the electrolytic power supply means by a control amount obtained by adding the integral calculation value in the proportional / integral correction calculation or the proportional / integral / derivative correction calculation in the previous electrolytic cleaning to the control amount obtained from the formula. Since it is possible to supply electrolyzed water with a more optimal ion concentration immediately after starting electrolyzed water cleaning, it is possible to obtain sufficient sterilization and antifouling effects and prevent darkening of the toilet bowl. It will be possible.

A twentieth aspect of the invention is a toilet bowl cleaning device having a function of preset setting and storing a control amount of the electrolysis power supply means for supplying the first predetermined current and the second predetermined current to the electrolysis means. The control means has a function of controlling the electrolysis power supply means by a preset and stored control amount when supplying the first predetermined current or the second predetermined current to the electrolysis means during the electrolytic precleaning. Therefore, it is possible to obtain the target current more accurately without using feedback control by using the control amount adjusted with high accuracy at the time of factory shipment, and to continue electrolysis unnecessarily without delay time due to feedback control. Since it does not occur, it is possible to prevent blackening of the toilet bowl without supplying electrolyzed water more than necessary.

In the twenty-first aspect of the invention, the control means has a function of continuously driving the electrolytic power supply means for a predetermined time even after the electrolysis water cleaning time is finished and the drive of the cleaning water supply means is stopped. Since it is equipped with, it is possible to prevent the water between the wash water supply means and the electrolysis means from being electrolyzed and supplied to the toilet bowl without being electrolyzed, and the sterilization / antifouling effect is not weakened. Becomes

In a twenty-second aspect of the invention, when the control means continues driving the electrolysis power supply means after the driving of the cleaning water supply means is stopped, the control means is controlled by a control amount immediately before the driving of the cleaning water supply means is stopped. Since it has a function of controlling the electrolytic power supply means, when the flow rate of the wash water changes after the drive of the wash water supply means is stopped, it does not change the current following the change, It is possible to obtain sufficient sterilization and antifouling effects and prevent darkening of the toilet bowl.

A twenty-third aspect of the invention is a toilet bowl cleaning device having display means, wherein the control means has a function of displaying an abnormality on the display means when the open abnormality or short circuit abnormality of the electrolysis means is detected. Therefore, when the antifouling / sterilizing effect cannot be sufficiently obtained due to the abnormality of the electrolytic means,
It is possible to inform the user of the abnormality and prompt replacement of the electrolysis means, and it is possible to minimize deterioration of the antifouling / sterilization effect.

[0028]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram of an automatic urinal cleaning device according to an embodiment of the present invention, FIG. 2 is a circuit block diagram for controlling electrolysis, and FIGS. 3 and 4 are flow charts of electrolysis control. Is a time chart of electrolytic pre-cleaning and electrolytic water cleaning, and FIG. 6 is a diagram showing the relationship between electrical conductivity and target current.

As shown in FIG. 1, the toilet bowl cleaning device with an electrolytic water supply function has a urinal 4, a water supply pipe 5 for supplying cleaning water to the urinal 4, and a cleaning water disposed in the middle of the water supply pipe. Water spout
A solenoid valve 2 for stopping water, an electrolyzer 3 comprising a pair of silver electrodes 3a, 3b arranged between the solenoid valve 2 and the urinal 4 for eluting silver ions by electrolysis, and a urinal 4. A human body sensor 14 for detecting whether or not a person is using the solenoid valve 2
And a control device 1 for controlling the electrolytic cell 3 and the human body sensor 14. The control device 1 supplies a cleaning water supply unit 6 for controlling the opening and closing of the electromagnetic valve 2 and electric power for eluting silver ions to the electrolytic cell 3. A power supply unit 8, an electrolytic power supply unit 7, a voltage measurement unit 9 for measuring the voltage supplied to the electrolytic cell 3,
A voltage amplification coefficient switching unit 10 that switches the amplification coefficient of the output of the voltage measurement unit 9 and a current measurement unit 11 that flows in the electrolytic cell 3.
And a current amplification coefficient switching section 12 for switching the amplification coefficient of the output of the current measuring section 11, and a control section 13 for controlling these.

As shown in FIG. 2, the microcomputer 17 and its power supply 24, the booster circuit 25 for boosting the voltage of the power supply 24 to a voltage required for electrolysis, and the microcomputer 17 for controlling the current supplied to the electrolytic cell 3. A PWM signal is output from the output port 21, and TR1 is controlled according to the duty ratio, and the output of the booster circuit 25 becomes a predetermined constant current and is supplied to the electrolytic cell 3. Further, the current supplied to the electrolytic cell 3 flows through the current detection resistor R1 to generate a potential difference V1, and the potential difference is amplified by the amplifier configured by the operational amplifier 26 and the resistors R3, R4, R5 to become V3, and the voltage is the microcomputer 17. The electric current that is input to the A / D port 18 and flows through the electrolytic cell 3 is detected. The reason why the current is added by the bias resistor R0 is to prevent TR1 from malfunctioning due to the offset voltage of the comparator 27 and to surely turn off TR1 when the electrolytic output is stopped. In addition, the amplification factor of the amplifier is R3, R
4 and R5, but by switching Hi / Lo of the output of the output port 22 of the microcomputer 17, T
R3 is turned on / off, and the amplification factor of the amplifier can be changed. Further, the voltage V0 supplied to the electrolytic cell is the voltage V4 determined by the voltage division ratio of the resistors R6, R7 and R8.
Then, the voltage input to the A / D port 19 of the microcomputer 17 and supplied to the electrolytic cell is detected. In addition, the microcomputer 17
TR2 is turned on / off by switching H / L of the output of the output port 20, and the voltage division ratio of the resistors R6, R7, and R8 is switched, and the amplification factor of the measured voltage is switched. Strictly speaking, the voltage supplied to the electrolytic cell is the difference between V0 and V1, but if the current detection resistor R1 is made sufficiently small, V1 will be much smaller than V0. It is also possible to obtain the voltage by V0.

In the above structure, as shown in FIG. 3, first the timer for 2 hours is started (S1), and if the urinal 4
Is used and the human body sensor 14 detects a human body (S
2) Then, the 2-hour timer is set again (S1). When nobody uses the urinal 4 for 2 hours (S3), it is controlled to perform electrolytic water cleaning. This is because if the electrolyzed water is washed too often, it may cause darkening of the toilet bowl.Therefore, wait for the time when bacteria in the urinal are active to proliferate and perform electrolyzed water cleaning immediately before that. This is because it sterilizes well. Then, the 10-second timer is started (S4), the electromagnetic valve 2 is driven to start the electrolytic precleaning (S5), and the electric conductivity of water is obtained by the electric conductivity calculation process described later. The target current is determined (S6). Then, when 10 seconds have elapsed from the driving of the solenoid valve 2 (S7), the driving of the solenoid valve 2 is stopped (S8), and the electrolytic preliminary cleaning is completed. And 5
The second timer starts (S9), and when the interval of 5 seconds of electrolytic pre-cleaning and electrolytic water cleaning has elapsed (S1
0), the timing of electrolytic water cleaning is. Then first 1
The 0 second timer is started (S11), and it is checked whether or not an electrolytic cell short circuit abnormality is detected during electrolytic pre-cleaning (S12). If no electrolytic cell short circuit abnormality has occurred, the solenoid valve 2 and electrolytic power supply unit are checked. Drive 7 (S1
3), the target current obtained during the electrolytic pre-cleaning is the electrolytic cell 3
The urinal 4 is washed with electrolyzed water. When 10 seconds have passed (S14), the driving of the solenoid valve 2 is stopped and the electrolyzed water cleaning is completed (S15), but the electrolysis power supply unit 7
Is continued for 1 second as it is (S16), the water between the solenoid valve 2 and the electrolysis tank 3 is prevented from being supplied to the toilet 4 without being electrolyzed, and 1 second has passed after the drive of the solenoid valve 2 is stopped. (S17) The driving of the electrolytic power supply unit 7 is stopped (S1
8). Further, when the electrolytic cell short-circuit abnormality is detected in the electrolytic preliminary cleaning (S12), only the solenoid valve 2 is driven to replace the water in the toilet (S19), and after 10 seconds (S20), the electromagnetic The driving of the valve 2 is stopped (S21).

Next, the electric conductivity calculation process during the electrolytic precleaning will be described with reference to FIG. First, the 1 second timer is started (S1), and after 1 second has elapsed since the solenoid valve 2 was driven (S2), the 1 second timer is further started (S3), and at the same time, the electrolytic power supply unit 7 is driven (S
4) A current of 1 mA is applied to the electrolytic cell 3 (S5). Then, after 1 second has passed, the voltage V0 supplied to the electrolytic cell is
The voltage V4 divided by the resistors R6 and R7 is measured by the A / D port 19 and it is checked whether it is 0.6 V or more (S7). If V4 is 0.6 V or more, V
It is checked whether 4 is 2.5 V or more (S8), 2.
If it is 5 V or higher, an electrolytic cell open abnormality is detected (S
9), the sensing LED 14a arranged in the human body sensor 14
Is blinked (S10), the user is informed of the abnormality of the electrolytic cell 3, and 2 mA, which is the lower limit value of the current flowing in the electrolytic cell, is set as the target current (S11). If it is 0.6V or more and less than 2.5V (S7, S8), the electrolyzed water of the required ion concentration can be obtained by applying a constant current to the region water of this electrical conductivity regardless of the electrical conductivity. Is set, 2 mA is set as the target current (S11),
The driving of the electrolysis power supply unit 7 is stopped (S20).

If V4 is less than 0.6 V, it is in the region of reprocessed water having a large electric conductivity, so the timer for 1 second is first started (S12), and the current flowing in the electrolytic cell is set to 3 m.
When the current is increased to A (S13) and the current is sufficiently stabilized after 1 second (S14), V4 is measured again and if it is 1.5 V or more (S15), water is detected from the detected voltage and the energized current at this time. The electric conductivity is calculated (S16), and the target electric current is calculated from the calculated electric conductivity S by the formula a × S + b (a and b are constants) (S17). Also, V4 is 1.5
If it is less than V (S15), the output port 20 of the microcomputer 17 is switched from Hi to Lo, and the voltage V0 supplied to the electrolytic cell is divided by the resistors R6, R7, and R8 to obtain the voltage V.
4 is input to the A / D port 19, the amplification coefficient for voltage measurement is increased (S21), and after waiting for 1 second (S22, S23), when the detected voltage is sufficiently stable, V4 is measured again. If 0.15V or more (S2
4) Then, the electric conductivity of water is calculated from the detected voltage and the energized current at this time (S16), and the target electric current is calculated from the calculated electric conductivity S by the expression a × S + b (S1).
7). If the target current obtained at this time is 50 mA
If the above value is obtained (S18), if the electrolysis is performed with the current as it is, the ion concentration becomes too high, which may cause darkening of the toilet bowl.
It is limited to 0 mA (S19), and the driving of the electrolytic power supply unit 7 is stopped (S20).

In addition, the amplification coefficient for voltage measurement is increased and V is again set.
4 is less than 0.15 V when measured (S2
4), the short circuit between the electrodes 3a and 3b of the electrolytic cell 3 is detected as a short circuit due to a foreign substance or the like (S).
25), the sensing LED 14 provided in the human body sensor 14
a is blinked (S26), and the user is informed of the abnormality in the electrolytic cell 3, and the driving of the electrolytic power supply unit 7 is stopped (S).
20). In this way, the electric conductivity of water is obtained during the electrolytic precleaning, and the target current during the electrolytic water cleaning is determined.

When Controlled According to the Above Explanation As shown in FIGS. 5 and 6, in the case of water such as tap water having low electric conductivity (area B in FIG. 6), as shown in FIG. After 1 second has elapsed from the start of the electrolytic pre-cleaning, electrolysis is performed at a current of 1 mA, and 1 second later, the electrical conductivity is measured and the target current of 2 mA is determined. After that, the electrolysis is once terminated, and after the electrolytic pre-cleaning time of 10 seconds is completed, electrolytic water cleaning is started at intervals of 5 seconds. And when 10 seconds have passed, the solenoid valve 2
Is turned off, but electrolysis is further continued for 1 second to prevent the residual water from the solenoid valve 4 to the electrolytic cell 3 from being supplied to the toilet without elution of silver ions.

Next, in the case of water having an intermediate electric conductivity (area C in FIG. 6), electrolysis is performed with a current of 1 mA after 1 second has elapsed from the start of electrolytic precleaning as shown in FIG. 5 (b). Then, the voltage across the electrolytic cell 3 at that time is measured. Since the voltage is low, electrolysis is performed at a current of 3 mA, and after 1 second, the electrical conductivity is measured and the target current is determined. The target current at this time is obtained as a function of electrical conductivity as shown in the area C of FIG. After that, the electrolysis is once terminated, and after the electrolytic pre-cleaning time of 10 seconds is completed, electrolytic water cleaning is started at intervals of 5 seconds. Then, after 10 seconds, the solenoid valve 2 is turned off, but the electrolysis is continued for another 1 second, and the residual water from the solenoid valve 2 to the electrolysis tank 3 is stored in the toilet without elution of silver ions. It is being prevented from being supplied.

Next, in the case of water having high electric conductivity (D in FIG. 6).
1) from the start of electrolytic pre-cleaning as shown in FIG.
After the lapse of seconds, electrolysis is carried out for 1 second at a current of 1 mA. Since the voltage across the electrolytic cell 3 at that time is low, electrolysis is carried out for 1 second at a current of 3 mA and the voltage across the electrolytic cell 3 is measured. However, since the detected voltage is still low, the amplification coefficient of the voltage measuring unit is increased and electrolysis is performed for another 1 second, then the voltage across the electrolyzer 3 is measured, and the electrical conductivity of water is measured from the voltage and current at that time. Then, the target current is determined. The target current at this time is also obtained as a function of electrical conductivity as shown in the area D of FIG. After that, the electrolysis is once terminated, and after the electrolytic pre-cleaning time of 10 seconds is completed, electrolytic water cleaning is started at intervals of 5 seconds. Then, after 10 seconds, the solenoid valve 2 is turned off, but the electrolysis is continued for another 1 second, and the residual water from the solenoid valve 2 to the electrolysis tank 3 is stored in the toilet without elution of silver ions. It is being prevented from being supplied.

Next, in the case of water having a higher electric conductivity (E region in FIG. 6), the electric conductivity and the target current are changed by the timing shown in FIG. 5C as in the region D in FIG. Although it is determined, in the water in this region, as shown in E of FIG. 6, it is not a function of the electric conductivity but is limited to 50 mA which is the upper limit value of the current flowing in the electrolytic cell, and becomes a constant current value.

Next, when there is no water due to water with extremely low electric conductivity or due to water interruption or when the electrolytic cell has an open failure (area A in FIG. 6), preliminary electrolytic cleaning is performed as shown in FIG. 5 (d). After 1 second has passed from the start, electrolysis is performed with a current of 1 mA and 1 second later, an electrolytic cell open abnormality is detected and a sensing LED
The blinking of 14a is started, and at the same time, the target current of 2 mA is determined. After that, electrolysis is terminated once, and electrolysis pre-cleaning time 1
After the completion of 0 seconds, the electrolytic water cleaning is started at an interval of 5 seconds. Then, after 10 seconds, the solenoid valve 2 is turned off, but electrolysis is continued for another 1 second to supply the residual water from the solenoid valve 2 to the electrolytic cell 3 to the toilet without elution of silver ions. Is being prevented.

Next, when water having extremely high electric conductivity or foreign matter mixed between electrodes or when the electrolytic cell has a short circuit failure (area F in FIG. 6), the electrolytic preparatory process is performed as shown in FIG. 5 (e). After 1 second has elapsed from the start of washing, electrolysis is performed at a current of 1 mA for 1 second. Since the voltage across the electrolysis tank 3 at that time is low, electrolysis is performed at a current of 3 mA for 1 second to measure the voltage across the electrolysis tank 3. . However, since the detected voltage is still low, the amplification coefficient of the voltage measuring unit is increased and electrolysis is performed for 1 second, and then the voltage across the electrolyzer 3 is measured, and the short circuit abnormality of the electrolyzer is detected and the sensing LED 14a blinks. Start and end electrolysis once. After the electrolysis pre-cleaning time of 10 seconds ends, the electrolyzed water cleaning is started at an interval of 5 seconds, but electrolysis is not performed and only the solenoid valve 2 is turned on to perform non-electrolyzed water cleaning for 10 seconds. The water in the urinal 4 is replaced.

Next, FIG. 7 shows the relationship between the duty ratio of the PWM signal for controlling the electrolytic current and the current flowing in the electrolytic cell 3.
First, when the current flowing through the electrolytic cell 3 is relatively small, 10 mA or less, a Hi signal is output from the output port 22 of the microcomputer 17, and the TR3 is turned on. An amplifier is constituted by the operational amplifier 26 and the resistors R3 and R5, and the amplification coefficient for current measurement becomes large. The voltage obtained by comparing the output voltage V3 of the amplifier and the PWM signal V2 output from the output port 21 of the microcomputer 17 by the comparator 27. Is TR
The current supplied to the base of No. 1 and flowing to the emitter of TR1 is controlled so that the current flowing to the electrolytic cell 3 becomes a constant current. The larger the duty ratio of the PWM signal output from the output port 21 is, the larger the current flowing to the electrolytic cell 3 is. When the current flowing to the electrolytic cell 3 becomes 10 mA or more, the Lo signal is output from the output port 22 to turn off the transistor TR3, and the operational amplifier 26 and the resistors R3, R4, and R5 form an amplifier. It will be small. Therefore, the output voltage V of the amplifier
Since 3 is smaller than when the amplification factor is large, even if the PWM signal of the same duty ratio is output from the output port 21, the voltage compared by the comparator 27 becomes small, and the voltage supplied from the comparator 27 to the base of TR1 is also small. Since it becomes higher, the current flowing through TR1 can be increased even with the same duty ratio. In this way, the relationship between the duty ratio of the PWM signal output from the port 21 and the current flowing in the electrolytic cell 3 is linear. Therefore, by storing this relationship in advance, the same current as the target current can be obtained. Electrolyzer 3
It becomes possible to flow to.

However, in practice, since there are variations in the constants and characteristics of each electronic component constituting the circuit, the PWM signal having the duty ratio according to the relational expression stored in advance is output from the output port 21. In general, the current value flowing in the electrolytic cell 3 does not usually match the target current.

Therefore, first, regarding the electric current values of 1 mA and 3 mA used for measuring the electric conductivity during the electrolytic precleaning,
In the inspection before shipping when this device was manufactured, first, an accurate 1 mA constant current load was used instead of the electrolytic cell 3.
A PWM signal is output from the output port 21 of the microcomputer 17 at the maximum duty ratio, and the input value AD1 of the current detection A / D port 18 at that time is stored. Next, an accurate constant current load of 3 mA is used instead of the electrolytic cell 3, a PWM signal is output from the output port 21 of the microcomputer at the maximum duty ratio, and the input value AD of the current detection A / D port 18 at that time is output.
Remember 3. Subsequently, a resistor is connected instead of the electrolytic bath 3, the microcomputer 17 outputs a PWM signal having a duty ratio of 1 mA from the output port 21, and reads the input value of the current detection A / D port 18 at that time. If the input value AD1 at the exact 1 mA stored previously is different, the duty ratio output from the output port 21 is changed and this operation is performed again, and the input value of the current detection A / D port 18 and AD1 are The change of the duty ratio is repeated until they match, and the PWM value of the duty ratio output from the output port 21 when they match is stored in the non-volatile memory as PWM1. Similarly, the microcomputer 17 outputs the output port 2
A PWM signal with a duty ratio equivalent to 3 mA is output from 1 and the input value of the current detection A / D port 18 at that time is read, but the accurate input value A at the time of 3 mA stored previously is read.
If it is different from D3, the duty ratio output from the output port 21 is changed and this operation is performed again, and the duty ratio is repeatedly changed and matched until the input value of the current detection A / D port 18 and AD3 match. The PWM value of the duty ratio output from the output port 21 when
It is stored in the nonvolatile memory as M3.

The 1 mA output duty ratio PWM1 and the 3 mA output duty ratio P stored in this manner are stored.
A more accurate current can be supplied to the electrolytic cell 3 by outputting the WM3 from the output port 21 of the microcomputer at the time of measuring the electric conductivity of the electrolytic pre-cleaning, so that the electric conductivity can be measured more accurately. Is possible.

A method of controlling the electrolytic cell current at the time of cleaning with electrolytic water will be described with reference to the flow chart shown in FIG. 8 and the electrolytic current time chart shown in FIG. First, the integrated value FBi is cleared (S1), and subsequently, the duty corresponding to the target current Is is calculated from the relational expression between the duty ratio of the PWM signal output from the port 21 and the current flowing in the electrolytic cell 3 which is stored in advance. Determine the ratio (S2), PWM from port 21
A signal is output (S3), the solenoid valve 2 is driven (S4), and at the same time, a 1 second timer is started (S5), and this PWM signal is continuously output until 1 second has elapsed (S6).
Here, this value is continued for 1 second in order to wait for the current value flowing through the electrolytic cell 3 and the flow rate of the washing water to stabilize (region G in FIG. 9).

Then, after 1 second has elapsed, the timer is started for 9 seconds (S7), the value of the current detection A / D port 18 is read and input to ADI (S8), and the operational amplifier 26 and the resistors R3, R4, R5 and the current are read. The current amplification factor GI determined by the detection resistor R1 is multiplied by that value to obtain the current value Ir (S9), and the current deviation Ih from the target current Is is obtained (S10). Next, the current deviation Ih is multiplied by the proportional gain Kr to obtain a proportional value FBr (S11).
h is multiplied by the integral gain Ki, and the value is multiplied by the previous integral value FB.
i is added to obtain a new integrated value FBi (S12). Then, a new PWM signal (duty ratio) obtained by adding the proportional value FBr and the integral value FBi to the first output PWM signal (duty ratio) is obtained and the value is output from the output port 21 (S13). Next, the 200 msec timer is started (S14), and after 200 msec has elapsed (S15), it is checked whether or not the 9 sec timer that has just started becomes 0 (S16).
/ D port 18 value is read and deviation from target current Is is I
Proportional value FBr and integral value FBi are calculated from h and new PW
The process of obtaining and outputting the M value is repeated. In this way, feedback control is performed so that the target current Is and the current Ir that actually flows in the electrolytic cell 3 become equal from 1 second after the start of electrolytic water cleaning to the end of electrolytic water cleaning (H in FIG. 9). Area).

If the timer is 0 after 9 seconds, the driving of the solenoid valve 2 is stopped (S17), and the 1-second timer is started (S18), and at the same time, the PWM output is continued. Here, the PWM output is continued after the driving of the solenoid valve 2 is stopped, and then silver ions are not eluted into the water between the solenoid valve 2 and the electrolytic cell 3 and are discharged to the urinal 4 to disinfect.
This is to prevent the antifouling effect from becoming weak (region I in FIG. 9). And after 1 second has passed (S19), output port 2
The output of 1 is stopped (S20).

In addition, for one second after the electrolytic water cleaning is started, P output from the port 21 stored in advance is stored.
The duty ratio corresponding to the target current Is was determined from the relational expression between the duty ratio of the WM signal and the current flowing in the electrolytic cell 3, and the PWM signal was output from the port 21. If a value obtained by adding the integrated value FBi at the time of the previous electrolytic water cleaning to the duty ratio is output as a PWM signal from the port 21, the electrolytic bath 3 can be operated within 1 second after starting the electrolytic water cleaning. It is possible to further improve the accuracy of the current flowing through.

The above description relates to only one embodiment of the present invention, and does not mean that the present invention is limited to the above description.

[0051]

The present invention has the following effects due to the above configuration.

Before performing electrolytic water cleaning, the electric conductivity of water can be obtained by a current smaller than the lower limit of the current value supplied to the electrolytic cell during electrolytic water cleaning, and the target current can be determined. Since it is possible to electrolyze with an optimum current value and it does not supply electrolyzed water with an ion concentration higher than necessary, it is possible to prevent darkening of the toilet bowl and to obtain a sufficient sterilization and antifouling effect. It will be possible.

Further, when the electric conductivity of water is small and the detected voltage is small and the electric conductivity of water cannot be obtained with sufficient accuracy, the current flowing in the electrolytic cell is increased or the voltage detection gain is increased. Since the electric conductivity of water can be obtained with higher accuracy, it is possible to prevent darkening of the toilet bowl without supplying electrolyzed water with an ion concentration higher than necessary, and to obtain sufficient sterilization and antifouling effects. Becomes

Further, the current flowing through the electrolytic cell is feedback-controlled during electrolytic water cleaning, and the current flowing through the electrolytic cell when the electric conductivity of water is obtained is stored in advance as a PWM signal. Since it is possible to further improve the accuracy of the current applied to the device and to minimize the time for which the current is applied, it is possible to prevent darkening of the toilet bowl and to obtain a sufficient sterilization and antifouling effect.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an automatic urinal cleaning device with an electrolytic water supply function according to the present invention.

FIG. 2 is a circuit configuration diagram of electrolytic control in the present invention.

FIG. 3 is a flow chart of electrolysis control in the present invention.

FIG. 4 is a flow chart of electrolysis control in the present invention.

FIG. 5 is a time chart of electrolytic pre-cleaning and electrolytic water cleaning in the present invention.

FIG. 6 is a graph showing the relationship between the electric conductivity of water and the electrolytic current in the present invention.

FIG. 7 is a graph showing the relationship between the electrolytic current and the control signal in the present invention.

FIG. 8 is a flowchart of feedback control of electrolytic current according to the present invention.

FIG. 9 is a time chart of electrolytic current in the present invention.

[Explanation of symbols]

1 ... Control device, 2 ... Solenoid valve, 3 ... Electrolyzer, 3a ... Electrode,
3b ... Electrode 4 ... Urinal, 5 ... Water supply pipe, 6 ... Wash water supply unit, 7 ... Electrolytic power supply unit 8 ... Power supply unit, 9 ... Voltage measuring unit, 10 ... Voltage amplification coefficient switching unit 11 ... Current measuring unit, 12 ... Current amplification coefficient switching unit, 13 ...
Control unit 14 ... Human body sensor, 14a ... Sensing LED 17 ... Microcomputer, 18 Current detection A / D port, 19 ...
A / D port for voltage detection 20 ... Amplification coefficient switching output port for voltage measurement, 21 ... PW
M signal output port 22 ... Current measurement amplification coefficient switching output port, 23 ... Oscillator 24 ... Control power supply, 25 ... Booster circuit, 26 ... Operational amplifier, 27 ... Comparator

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2D038 AA02 KA00 KA01                 2D039 AA04 DB04 DB08 EA00 FA03                       FC08                 4D061 DA02 DB09 EA02 EB01 EB04                       EB37 EB39 GA12 GA14 GC12

Claims (23)

[Claims] 1. A toilet bowl, a toilet flush water supply channel for supplying toilet flush water to the toilet bowl, a flush water supply means arranged in the toilet flush water channel to supply flush water, and the toilet flush water supply channel. An electrolysis means disposed in the passage for eluting bactericidal metal ions by electrolysis, an electrolysis power supply means for controlling electric power supplied to the electrolysis means, a cleaning water supply means and the electrolysis power supply means. A toilet bowl cleaning device that includes a control unit and is capable of freely switching between electrolytic water cleaning in which the cleaning water supply unit and the electrolytic power supply unit are simultaneously driven and non-electrolytic water cleaning in which only the cleaning water supply unit is driven. 2. The toilet cleaning device with electrolytic water supply function according to claim 1, wherein the control means has an electrolytic precleaning function of performing the non-electrolytic water cleaning a predetermined time before performing the electrolytic water cleaning. 2. A toilet bowl cleaning device comprising voltage measuring means for measuring a voltage applied to said electrolysis means, wherein said control means drives said electrolysis power supply means during said electrolytic precleaning, and said voltage measurement means at that time. 2. The electrolyzed water supply function according to claim 1, wherein the electroconductivity of water is calculated by the detection voltage of 1. Toilet bowl cleaning device. 3. A toilet bowl cleaning device comprising voltage measuring means for measuring a voltage applied to said electrolysis means, wherein said control means drives said electrolysis power supply means after a lapse of a predetermined time from the start of said electrolysis precleaning. Then, the electrical conductivity of water is calculated by the detection voltage of the voltage measuring means at that time,
The toilet bowl cleaning device with an electrolytic water supply function according to claim 1, wherein a target current to be supplied to the electrolyzing unit is determined based on the electrical conductivity when the electrolytic water is cleaned. 4. The control means calculates the electric conductivity of water by the detection voltage of the voltage measuring means at a time point when a predetermined time has elapsed after the electrolysis power supply means was driven during the electrolytic pre-cleaning. 4. The toilet bowl cleaning device with electrolytic water supply function according to claim 2, wherein a target current to be supplied to the electrolyzing means is determined based on electric conductivity when the electrolytic water is cleaned. 5. The electrolyzed water supply function according to claim 2, wherein the electric power supplied from the electrolysis power supply means during the electrolytic precleaning is a predetermined first predetermined current. Toilet bowl cleaning device. 6. The first predetermined current supplied from the electrolytic power supply means during the electrolytic precleaning is set to be smaller than the lower limit value of the current value supplied from the electrolytic power supply means during the electrolytic water cleaning. The toilet bowl cleaning device with the electrolytic water supply function according to claim 5, wherein 7. The control means supplies the first predetermined current during the electrolytic pre-cleaning, and if the voltage detected by the voltage measuring means is lower than the first predetermined voltage, the first predetermined current continues. The second predetermined current set to be larger than the predetermined current is supplied, the electric conductivity of water is calculated by the detected voltage of the voltage measuring means at that time, and the electric conductivity of the water is calculated based on the electric conductivity. 7. The toilet bowl cleaning device with electrolytic water supply function according to claim 5, wherein a target current supplied to the electrolysis means is determined. 8. The control means calculates the electric conductivity of water by the voltage detected by the voltage measuring means after a lapse of a predetermined time from the start of the supply of the second predetermined current, and 7. The toilet bowl cleaning device with an electrolytic water supply function according to claim 5, wherein a target current to be supplied to the electrolyzing unit is determined based on conductivity when the electrolytic water is cleaned. 9. The control means supplies the first predetermined current during the electrolytic precleaning, and the voltage detected by the voltage measuring means is set to a second predetermined voltage higher than the first predetermined voltage. When the voltage is higher than the voltage, it is provided with a function of detecting an open abnormality of the electrolysis means and setting the target current to the lower limit value of the current value supplied from the electrolysis power supply means during the electrolytic water cleaning. Claim 5
8. A toilet bowl cleaning device with a function of supplying electrolyzed water according to items 8 to 8. 10. In a toilet bowl cleaning device having an amplification coefficient, the voltage measuring means being switchable, the control means:
When the second predetermined current is supplied during the electrolytic precleaning, and the voltage detected by the voltage measuring means is lower than the predetermined voltage, the amplification coefficient is increased and water is detected by the voltage detected by the voltage measuring means at that time. 10. The toilet bowl with electrolytic water supply function according to claim 7, wherein a target current to be supplied to the electrolysis means at the time of cleaning the electrolytic water is determined based on the electric conductivity of the toilet bowl. apparatus. 11. The toilet bowl cleaning device having an amplification coefficient, wherein the voltage measuring means is switchable, wherein the control means comprises:
When the voltage detected by the voltage measuring means is lower than the predetermined voltage by supplying the second predetermined current during the electrolytic precleaning, the voltage measuring means is increased after a predetermined time has elapsed after increasing the amplification coefficient. 10. The electric conductivity of water is calculated from the detected voltage, and the target current supplied to the electrolysis means at the time of the electrolytic water cleaning is determined based on the electric conductivity. Toilet bowl cleaning device with electrolytic water supply function. 12. The control means supplies the second predetermined current during the electrolytic pre-cleaning to increase the amplification coefficient of the voltage measuring means, and then the voltage detected by the voltage measuring means is a predetermined voltage. If it is lower than the above value, at least the drive of the electrolysis power supply means is stopped as a short circuit abnormality of the electrolysis means, and a function of stopping the electrolysis water cleaning is provided. Toilet bowl cleaning device with supply function. 13. The control means supplies the second predetermined current during the electrolytic pre-cleaning to increase the amplification coefficient of the voltage measuring means, and then the voltage detected by the voltage measuring means is a predetermined voltage. If it is lower than the above, as a short circuit abnormality of the electrolytic means, at least the drive of the electrolytic power supply means is stopped, and a function of performing the non-electrolytic water cleaning instead of the electrolytic water cleaning is provided. 10. A toilet bowl cleaning device with a function of supplying electrolyzed water according to 10 to 11. 14. The control means sets the target current value to the predetermined current when the target current obtained based on the electric conductivity is larger than a predetermined current. 14. A toilet bowl cleaning device with a function of supplying electrolyzed water according to claim 13. 15. The control means stops the driving of the electrolysis power supply means when a target current to be supplied to the electrolysis means during the electrolytic water cleaning is determined during the electrolytic precleaning. Item 15. A toilet bowl cleaning device with an electrolytic water supply function according to items 2 to 14. 16. A toilet bowl cleaning device comprising current measuring means for measuring a current value supplied to the electrolyzing means, wherein the control means is such that the detected current from the current measuring means during the electrolytic water washing is the The toilet bowl cleaning device with electrolytic water supply function according to any one of claims 2 to 15, further comprising a function of controlling the electrolytic power supply means so that the target current value determined during the electrolytic precleaning is achieved. 17. The control means performs a proportional / integral correction calculation or a proportional / integral / derivative correction calculation so that the deviation between the target current value and the detected current value from the current measuring means becomes zero, 17. A function for controlling the electrolytic power supply means according to a calculation result is provided.
The toilet bowl cleaning device with the described electrolytic water supply function. 18. The control means is determined from a predetermined relational expression between a control amount of the electrolysis power supply means and a current supplied to the electrolysis means for a predetermined time from the start of the electrolytic water cleaning. The function of controlling the electrolytic power supply means based on the result of the proportional / integral correction calculation or the proportional / integral / differential correction calculation is performed after a predetermined time has elapsed. The toilet bowl cleaning device with an electrolytic water supply function according to claim 17, further comprising: 19. The control means is obtained from a relational expression between a predetermined control amount of the electrolysis power supply means and a current supplied to the electrolysis means for a predetermined time from the start of the electrolytic water cleaning. A function for controlling the electrolytic power supply means is provided by a control amount obtained by adding the integral calculation value in the proportional / integral correction calculation or the proportional / integral / derivative correction calculation in the previous electrolytic cleaning to the control amount. The toilet bowl cleaning device with an electrolytic water supply function according to claim 18. 20. In a toilet bowl cleaning device having a function of preset setting and storing a control amount of the electrolysis power supply means for supplying the first predetermined current and the second predetermined current to the electrolysis means, the control means comprising: When the first predetermined current or the second predetermined current is supplied to the electrolysis means during the electrolytic pre-cleaning, the electrolysis power supply means is controlled by a preset and stored control amount.
The toilet bowl cleaning device with an electrolytic water supply function according to any one of 6 to 19. 21. The control means, even after the electrolyzed water cleaning time ends and the drive of the cleaning water supply means is stopped,
21. The toilet bowl cleaning device with an electrolyzed water supply function according to claim 1, wherein the electrolysis power supply means is continuously driven for a predetermined time. 22. When the control means continues to drive the electrolysis power supply means after the drive of the cleaning water supply means is stopped, the electrolysis power supply is performed by a control amount immediately before the drive of the wash water supply means is stopped. 22. The toilet bowl cleaning device with an electrolytic water supply function according to claim 21, wherein the means is controlled. 23. In a toilet bowl cleaning device having display means, the control means has a function of displaying an abnormality on the display means when the open abnormality or short circuit abnormality of the electrolysis means is detected. Claims 1 to 2
2. The toilet bowl cleaning device with the electrolytic water supply function described in 2.