JPH0380941B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a control device for a toilet bowl with a private parts cleaning device that cleans the private parts after defecating with washing water at an appropriate temperature.

[Technical background and problems of the invention]

In recent years, toilet bowls have been equipped with private parts cleaning devices that spray cleansing water at an appropriate temperature, making it possible to clean the private parts after using the toilet with the cleansing water and perform post-treatment hygienically. Toilet bowls have come into use.

In general, this type of toilet bowl, for example,
As shown in the figure and FIG.
An electric pump 104 and a heater for heating the cleaning water inside the cylindrical case are installed between the nozzle 103 and the nozzle 103, which is placed in a position suitable for spouting cleansing water at an appropriate temperature from the lower side of the body toward the private parts of the human body. There is a so-called instant heating type in which a heating device 105 containing a temperature sensor is connected via a tube.The heater in the heating device 105 is connected to a power source via a switching element, and when in use, the power switch 106 is turned on. When the electric pump 104 is turned on, the temperature of the water flowing into the heating device 105 is detected by a temperature sensor,
The energization of the switching element is controlled by the detection signal of the temperature sensor, the water in the heating device 105 is heated by the heater, and the cleaning water at the appropriate temperature is sent to the nozzle 103.
It is configured so that it can be squirted out to cleanse private parts. Further, the temperature of the cleaning water is maintained at a constant temperature (approximately 38° C.) by controlling the heater to be energized by a temperature sensor.

However, in the private parts washing device having the above configuration, if the heating capacity of the heating device 105 is able to heat approximately 500 c.c. of water (0°C) to 38°C in 1 minute and maintain the same temperature. When the user increases the amount of water discharged to, for example, 600 c.c./min in order to quickly wash the private parts, the temperature of the water flowing through the heating device 105 at that time drops below 5°C. When it gets hot, nozzle 103
Due to the increase in the amount of water being spouted, the temperature of the cleaning water could not be maintained at 38°C, and the temperature would drop to 36-34°C, causing discomfort to the user. To overcome this drawback, the heater capacity can be increased, but as is well known, in ordinary homes, a protective safety breaker is installed based on the contracted current (for example, 15A, 20A contract, etc.). Therefore, if the heater capacity of the heating device 105 is increased, a current larger than the contracted current will flow when the private parts cleaning device is used, which will trip the safety breaker, in conjunction with the usage status of other household electrical equipment. Sometimes.

[Purpose of the invention]

The present invention eliminates the above-mentioned drawbacks, detects the drop in water temperature that occurs when the amount of cleaning water spouted from a nozzle exceeds a specified value, and adjusts the spouted water temperature to a required set temperature (approximately 38 degrees Celsius). ), the amount of water discharged is automatically adjusted to a predetermined fixed value, and the water discharge temperature of the flushing water is always maintained at the set temperature. An object of the present invention is to provide a toilet bowl with a private parts cleaning device that can be used within the following range.

[Summary of the invention]

In the present invention, when the temperature of the washing water spouted from the nozzle of the private parts washing device is lower than the required set temperature and the heater is fully energized, the control phase angle of the thyristor that controls the energization of the electric pump is adjusted. By increasing the current and controlling the current applied to a washing water supply device such as an electric pump, the water discharging capacity of the pump is suppressed and the amount of washing water spouted is adjusted, so that the water spouting temperature of the washing water is always at the set temperature. The present invention is characterized in that a toilet bowl with a private parts cleaning device is equipped with a control device for controlling the toilet bowl with a private parts cleaning device.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3. In addition, in Figures 1 to 3, the fourth
The same reference numerals as in the figures and FIG. 5 indicate the same parts.

In FIG. 1, 1 is a power supply terminal connected to an AC power source (not shown), and 2 is a case 3 of a heating device 105.
(The size is large enough to hold about 50 c.c. of water)
It is a heater disposed together with a temperature sensor 4 inside, and is connected to the power supply terminal 1 via a switching element 5 such as a triax. The heating device 105 connects the water supply pipes 101 to the water inlet 3a and the water outlet 3b of the cylindrical case 3 to communicate with each other, and the heater 2 disposed inside the case 3 is connected to the surface of the hollow cylindrical ceramic. The heater 2 is placed near the water inlet 3a in the case 3, and the water entering from the water inlet 3a is Water is discharged from the water outlet 3b after passing through the hollow of the ceramic and in contact with the surface of the ceramic, and when this water passes through the surface of the ceramic, it is heated by the heater 2 which generates heat due to energization and is discharged. Further, the temperature sensor 4 is formed by printing a resistor on the surface of ceramic, coating the resistor with ceramic and sintering it, and connects the water outlet 3b in the case 3.
It is hung nearby and detects the temperature of the heated wash water discharged from the water outlet 3b. Furthermore, the case 3 is structured so that a certain amount of water remains in order to prevent dry heating by the heater 2, and the temperature sensor 4 detects this residual water to prevent it from being overheated by the heater 2. Controls opening and closing of element 5.

Next, the control device 6 will be explained. 7 is a power supply circuit connected to the power supply terminal 1, and 8 is a resistance-voltage conversion circuit connected to the temperature sensor 4, which converts the change in resistance value detected by the temperature sensor 4 into a voltage and outputs it. be. Reference numeral 9 denotes an amplifier circuit into which the output Vt of the resistance-voltage conversion circuit 8 is input, and the other input terminal of the amplifier circuit corresponds to the set temperature (approximately 38° C.) of the cleaning water heated by the heating device 105 and ejected. Using the output Vs of the reference voltage setting circuit 10 whose output is set as a voltage as an input, the difference between these two inputs is amplified and the output voltage _V10 is obtained when both inputs are Vt.
>Vs, a positive voltage is output, when Vt=Vs, zero volts are output, and when Vt<Vs, a negative voltage is output. 11 is a zero-cross detection circuit that receives the output of the full-wave rectified waveform from the power supply circuit 7 and sends out a pulse signal at the zero point of the input waveform; 13 is a sawtooth wave generation circuit which sets the output to zero by a signal and sends out a sawtooth wave output V ₁₅ synchronized with the half wave of the AC power input to the power supply terminal 1; A first comparator circuit connected to the output terminal compares these two inputs _V10 and _V15 and sends out an output signal of "H" or "L" level. A first gate drive circuit 14 is connected to the output terminal of the first comparison circuit 13 and sends a gate signal to the switching element 5 in response to an input signal from the comparison circuit 13. Reference numeral 15 denotes a water discharge amount limiting circuit connected to the output terminal of the amplifier circuit 9, which inverts and amplifies the output of the amplifier circuit 9, and also quantifies the water discharge amount of the electric pump 104 when a positive voltage is output from the amplifier circuit 9. When a negative voltage is output, a voltage V ₂₅ is output that limits the amount of water discharged from the electric pump. 16 is a second comparison circuit connected to the output terminals of the sawtooth wave generation circuit 12 and the water discharge amount limiting circuit 15, and both inputs V ₁₅ and
_V25 and sends out an "H" or "L" level output signal. 17 is a second gate drive circuit connected to the output terminal of the second comparison circuit 16;
A gate signal is sent to the thyristor 18 based on the input signal from the second comparison circuit 16 . Reference numeral 19 denotes an operating switch for the electric pump 104, which is constructed using a b contact type.

This control device 6 will be further explained with reference to FIG. 2 which shows it in detail.

The power supply circuit 7 includes a power transformer T connected to the power supply terminal 1, a diode bridge DB having an AC input terminal connected to the secondary side of this transformer T, and a diode connected to the DC output terminal of this diode bridge DB. D, voltage regulators AVR ₁ , AVR ₂ , and a smoothing capacitor C are provided. Supplies each circuit as operating power. The resistance-voltage conversion circuit 8 includes a resistor R ₁ and a temperature sensor ₄ inserted in series between the constant voltage power supply +Vcc and the ground.
The resistance value corresponding to the temperature detected by the temperature sensor 4 and the output voltage divided by the resistor _R1 are output from the output terminal as the output Vt of the resistance-voltage conversion circuit 8. Ru. The reference value setting circuit 10 includes a variable resistor VR ₁ and a resistor R ₂ inserted in series between the constant voltage power supply +Vcc and the ground.
Form the connection point between VR ₁ and resistor R ₂ as the output end,
The output Vs from this output terminal is set to a reference value of the set temperature of the washing water (approximately 38°C), and a voltage corresponding to this value is sent out as an output. The amplifier circuit 9 connects the inverting input terminal of the operational amplifier A ₁ with multiple power supplies to the output terminal of the reference voltage setting circuit 10 via a resistor R ₃ .
The non-inverting input terminal is connected to the output terminal of the resistance-voltage conversion circuit 8 via a resistor _R4 , and a resistor _R5 is inserted in series between the inverting input terminal and the output terminal of the operational amplifier _A1 . Furthermore, if a resistor R ₆ is inserted in series between the non-inverting input terminal of operational amplifier A ₁ and the ground, and R ₅ /R ₃ = R ₆ /R ₄ , then the output V ₁₀ of operational amplifier A ₁ is V ₁₀ = R ₅ /R ₃ (Vt-Vs)...(1). Therefore, from equation (1) above, when Vt > Vs, the output V ₁₀ of operational amplifier A ₁ is a positive voltage, Vt
When =Vs, zero volt is output, and when Vt<Vs, negative voltage is amplified by the required amplification degree and output. The zero cross detection circuit 11 connects the collector of a transistor _Q1 with a grounded emitter to a constant voltage power supply +Vcc via a resistor _R7 , inserts a resistor _R8 between the base and emitter, and further includes a diode whose cathode is connected to the base. The anode of D ₁ is connected to the DC output end of diode bridge DB through resistor R ₉ , and the full-wave rectified voltage from diode bridge DB is connected to the base of transistor Q ₁ through resistor R ₉ .
A voltage divided by and _R8 is supplied, and this transistor _Q1 turns on when a voltage exceeding 0.6V is supplied to the base between the base and emitter, and vice versa. Turn it off when That is, the transistor _Q1 is turned off when the full-wave rectified voltage is close to the zero point, and an "H" level output signal is output from the output terminal (collector) of the transistor _Q1 . Sawtooth wave generation circuit 1
2, insert resistors R ₁₀ and R ₁₁ and capacitor C ₁ in series between constant voltage power supply +Vcc and ground, and connect resistor R ₁₀ and
Diode D ₂ with anode connected to the connection point of R ₁₁
The cathode of Q ₂ is a transistor with a grounded emitter.
The output terminal of the zero cross detection circuit 11 is connected to the base of this transistor _Q2 , and when an "H" level output signal is output from _the transistor _Q1 , " H” level output signal is supplied and resistor _R7
A base current flows through it, turning on transistor _Q2 . Also, when the "L" level output signal is output from the transistor Q ₁ , the transistor Q ₂
Since no current flows through the base of the transistor
Q ₂ is off. Then, when the transistor Q ₂ is turned off, the capacitor C ₁ is charged through the resistors R ₁₀ and R ₁₁ and the voltage at the output terminal increases, and when the transistor Q ₂ is turned on, the capacitor C ₁ is charged through the resistor R ₁₁ − diode D ₂ − By discharging the collector-emitter capacitor _C1 circuit of the transistor _Q2 , the voltage at the output terminal is rapidly brought to zero, and a sawtooth wave output _V15 synchronized with the half-wave of the AC power input to the power supply terminal 1 is generated. Output. The first comparison circuit 13 connects the output terminal of the operational amplifier A ₁ of the amplifier circuit 9 to the inverting input terminal of the operational amplifier A ₃ of the plurality of power supplies, and connects the output terminal of the sawtooth wave generation circuit 12 to the non-inverting input terminal. When the output V ₁₅ of the sawtooth wave generation circuit 12 is larger than the output V ₁₀ of the amplifier circuit 9, (V ₁₅ ≧
V ₁₀ ) A high level output signal is sent from the operational amplifier A ₃ , and conversely, when V ₁₅ <V ₁₀ , a low level output signal is sent from the operational amplifier A ₃ via the resistor R _12. . First gate drive circuit 14
has a built-in photocoupler PC ₁ that has a pair of light emitting diodes LED ₁ and LED ₂ and light receiving elements PE ₁ and PE ₂ , and its configuration includes a transistor Q ₃ whose emitter is grounded at the output terminal of an operational amplifier A ₃ . The base is connected through a resistor _R12 , and the connection point between the base of the transistor _Q3 and the resistor _R12 is connected to a resistor _R13 and grounded.
A light emitting part of a photocoupler PC ₁ consisting of light emitting diodes LED ₁ and LED ₂ connected in series via a resistor R ₂₀ is inserted between the collector of the transistor Q ₃ and the constant voltage power supply +Vcc, while the gate of the switching element 5 A light receiving section of a photocoupler PC ₁ consisting of a pair of light receiving elements PE ₁ and PE ₂ such as photothyristors connected in antiparallel through a resistor R ₂₁ is inserted between the first anode and the first anode. Operational amplifier of circuit 13
When an "H" level signal is output from _A3 , a base current flows through the resistor _R12 to the base of the transistor _Q3 , turning on the transistor _Q3 , thereby driving the photocoupler _PC1 .
When the switching element 5 is turned on and, conversely, an "L" level signal is output from the operational amplifier _A3 ,
Since the transistor _Q3 is turned off and the photocoupler _PC1 is not driven, the switching element 5 is turned off. Note that the first anode of the switching element 5 is connected to the heater 2. The water discharge amount limiting circuit 15 connects the inverting input terminal of the operational amplifier A ₂ of the plurality of power supplies to the output terminal of the operational amplifier A ₁ of the amplifier circuit 9 via a resistor R ₁₄ , and connects the non-inverting input terminal to ground. A resistor _R15 is inserted in series between the inverting input terminal and the output terminal of amplifier _A2 . Then, the voltage V ₂₀ output from the operational amplifier A ₂ is set by V ₂₀ =−R ₁₅ /R ₁₄ V ₁₀ (2).

That is, when the output voltage V ₁₀ from the amplifier circuit 9 is a negative voltage, a positive voltage V ₂₀ is output to the output terminal of the operational amplifier A ₂ , and conversely, when the output voltage V ₁₀ is a positive voltage, the operational amplifier A A negative voltage is output from the output terminal of ₂ . Furthermore, the output terminal of the operational amplifier _A2 is connected to the cathode of a diode _D4 whose anode is grounded via a resistor _{R16 .}
Let the connection point between and the cathode of diode _D4 be X,
A resistor is connected between this connection point X and constant voltage power supply +Vcc.
R ₁₇ and a variable resistor VR ₂ for setting the amount of washing water discharged by the electric pump 104 are inserted in series,
When the output voltage from the operational amplifier _A2 is a negative voltage, the voltage at the connection point X becomes constant at a voltage lower than zero volts by the forward voltage _VD2 (for example, 0.6V) of the diode _D4 .

Therefore, the output V ₂₅ from the water discharge amount limiting circuit 15
_{V 25} = + _Vcc - X _{/ R 17} + VR ₂ × _{VR 2 +} A second comparison circuit 1 connected to the output end of the circuit 15
It is input to the inverting input terminal of operational amplifier _A4 of No.6.
On the other hand, when the output voltage from the operational amplifier A ₂ is a positive voltage, the output V ₂₅ from the water discharge amount limiting circuit 15 is V ₂₅ = +Vcc - V ₂₀ /R ₁₇ + VR ₂ + R ₁₆ × (VR ₂ + R ₁₆ )+V ₂₀ ...(4) is output, and a voltage higher than the voltage obtained by equation (3) is input to the inverting input terminal of operational amplifier _A4 . Further, the output terminal of the sawtooth wave generation circuit 12 is connected to the non-inverting input terminal of the operational amplifier A ₄ of the second comparison circuit 16, and the output terminal V ₂₅ outputted from the water discharge amount limiting circuit 15 generates a sawtooth wave. When the output V ₁₅ of circuit 12 is large, (V ₁₅ ≧V ₂₅ )
“H” level output signal from operational amplifier _A4 ,
Conversely, when V ₂₅ < V ₁₅ , the operational amplifier _A4 goes “L”.
The output signals of the respective levels are sent out via the resistor _R18 . Like the first gate drive circuit 14, the second gate drive circuit 17 includes a photocoupler PC ₂ having a light emitting diode LED ₃ and a light receiving element PE ₃ .
Its configuration is that the output terminal of operational amplifier A ₄ is connected to the base of transistor Q 4 whose emitter is grounded via resistor R ₁₈ , and the base of transistor _{Q 4 is} connected to resistor R ₁₈ . A grounded operation switch 19 and a resistor _R19 are connected in parallel to the connection point of the transistor _Q4 , and a light emitting diode LED connected in series with a resistor _R22 is connected between the collector of the transistor Q4 and the constant voltage power supply +Vcc. Insert the light emitting part of photocoupler PC ₂ consisting of ₃ , and on the other hand,
A light receiving element such as a photothyristor is connected in series between the gate of 8 and the anode through a resistor _R23 .
A light receiving part of a photocoupler PC ₂ consisting of PE ₃ is inserted, and when an "H" level signal is output from the operational amplifier A ₄ of the second comparator circuit 16, a resistor R ₁₈ is connected to the base of the transistor Q ₄ . When the base current flows through and turns on the transistor _Q4 , the photocoupler _PC2 is driven and the thyristor 18 is turned on, and conversely, when an "L" level signal is output from the operational amplifier _A4 , , the transistor _Q4 is turned off and the photocoupler _PC2 is not driven, so the thyristor 18 is turned off. Note that the anode of the thyristor 18 is connected to the electric pump 104. Further, unless the operation switch 19 is manually opened, its electrical circuit is closed, so the output from the second comparison circuit 16 is grounded via the operation switch 19 and connected to the second comparison circuit 16. It is not sent to the gate drive circuit 17.

Next, its operation will be explained. First, by connecting the power supply terminal 1 to an AC power supply (not shown) and turning on the power switch 106, constant voltage power supplies +Vcc and -Vcc are supplied from the power supply circuit 7 to each circuit. Subsequently, when the operation switch 19 of the electric pump 104 is opened, the temperature sensor 4
Since the detected temperature is low, the resistance value is also low, and therefore,
Since both inputs of the amplifier circuit 9 have a relationship of Vt<Vs,
The amplifier circuit 9 outputs a negative voltage V ₁₀ obtained by equation (1), and in response to this, the first comparator circuit 13 outputs an "H" level output signal, and the amplifier circuit The negative voltage V ₁₀ from 9 is inverted and amplified, and the resistors R ₁₆ , R ₁₇ and variable resistors
The second comparison circuit 16 to which the voltage output from the water discharge rate limiting circuit 15 is input via VR ₂ has a control phase angle higher than the control phase of the set value for setting the water discharge rate of the electric pump 104. The output signal is output to turn on the transistors Q ₃ and Q ₄ of the first and second gate drive circuits 14 and 17, respectively, thereby driving the photocouplers PC ₁ and PC ₂ , and switching element 5 and the thyristor. 18 and energizes the heater 2,
The electric pump 104 is driven to heat the washing water flowing into the heating device 105 to a required set temperature (approximately 38° C.). When the operation switch 19 is closed at the point when the water that has passed through the heating device 105 overflows from the nozzle 103, the output from the second comparison circuit 16 becomes a resistance.
The signal is grounded by the operating switch 19 via R ₁₈ and is no longer sent to the second gate drive circuit 17 . Therefore, the transistor _Q4 is turned off and no current flows to the gate of the thyristor 18, so the thyristor 18 is also turned off and the electric pump 104 is turned off.
The water flow to the heating device 105 is stopped. On the other hand, when the water temperature in the heating device 105 detected by the temperature sensor 4 exceeds the set temperature, both inputs of the amplifier circuit 9 have a relationship of Vt>Vs, and from the output terminal of the amplifier circuit 9, A positive voltage obtained from the formula is output. Therefore, the output signal of the first comparator circuit 13 becomes "L" level and the transistor
Q ₃ is turned off, and as a result of the off operation of transistor Q ₃ , no current flows to the gate of switching element 5 , and switching element 5 is also turned off to stop energizing heater 2 .

In this state, the hot water in the heating device 105 is poured into the nozzle 1.
A case will be described in which a private part is washed by discharging water from 03. First, when the operating switch 19 is opened at time _t in FIG. ₂ is driven to flow a gate current to the gate of the thyristor 18, turning on the thyristor 18 and driving the electric pump 104. By driving the electric pump 104, the cleaning water in the heating device 105 is pushed out and ejected from the nozzle 103 to cleanse the private parts. At this time, if the temperature of the cleaning water discharged from the nozzle 103 is equal to or slightly higher than the set temperature, the input of the amplifier circuit 9 (the input in FIG. 3, 9) is
Since there is a relationship of Vt≧Vs, a positive voltage or zero volt is output from the output end of the amplifier circuit 9 (output in FIG. 3, 9). On the other hand, diode bridge DB
The zero-cross detection circuit 11 that receives the full-wave rectified voltage from the transistor _Q1 is turned off while the base input of the transistor Q1 is lower than the base-emitter voltage (0.6V), and inputs a pulse signal from the collector to the power supply terminal 1. Since the signal is transmitted in synchronization with the zero point of the power supply voltage (output shown in FIG. 3, 11), when the sawtooth wave generating circuit 12 receives the pulse signal, it turns on the transistor Q ₂ and turns on the capacitor C ₁ . During the period when the pulse signal is stopped, transistor Q ₂ is turned off and capacitor C ₁ is connected to constant voltage power supply +
By charging through resistors R ₁₀ and R ₁₁ with Vcc, a sawtooth waveform output signal (output shown in FIG. 3, 12) is generated in synchronization with the zero point of the AC power supply. This output signal is repeatedly generated at a level that is higher than the zero level by the collector-emitter saturation voltage of the transistor Q ₂ and the forward voltage drop (0.6 V) of the diode D ₂ . (Input in Figure 3 13)
Therefore, the output of the first comparison circuit 13 is equal to the input V ₁₀
When is a positive voltage or zero volts, and the relationship is V ₁₀ < V ₁₅ , an “H” level output signal (output in Figure 3, 13) is continuously sent out, and this signal is the first Gate drive circuit 14
The base current flows through the input of the transistor _Q3 , and as a result, current flows to the light-emitting diodes _LED1 and _LED2 of the photocoupler _PC1 , and the light-emitting diodes
LED ₁ and LED ₂ emit light, and the light receiving element receives this light.
When PE ₁ and PE ₂ are turned on, gate current flows to the gate of switching element 5, and switching element 5
The heater 2 is energized by controlling the phase at a certain phase angle of the AC power supply (output shown in FIG. 3, 5), and the heating device 105
The cleaning water that flows inside is heated. Further, when both inputs of the first comparator circuit 13 have a relationship of V ₁₀ >V ₁₅ , the output of the first comparator circuit 13 is an “L” level signal, and the first gate drive circuit 14
In order to turn off the transistor Q ₃ , the light emitting diodes LED ₁ and LED ₂ of the photocoupler PC ₁ are turned off, and the gate current no longer flows through the switching element 5, thereby turning off the switching element 5. In this way, by controlling the conduction angle of the switching element 5 via the first gate drive circuit 14 using the signal output from the first comparison circuit 13,
The heater 2 is energized to maintain the temperature of the cleaning water spouted from the nozzle 103 at a set temperature.

When the output V ₁₀ of the amplifier circuit 9 is a positive voltage or a zero bottle, this output V ₁₀ is the water discharge amount limiting circuit 1.
5 through resistor _R14 , the output
V ₁₀ is inverted and amplified, and a negative voltage or zero bottle voltage is output from the output terminal of operational amplifier A ₂ (the third
Figure A ₂ output) so resistor R ₁₆ and diode
_{The voltage} at _the connection point is input. In addition, the second comparison circuit 16 receives the output from the sawtooth wave generation circuit 12.
V ₁₅ is input (input in Fig. 3 16), and when both inputs are compared and the relationship is V ₁₅ > V ₂₅ , the “H” level output signal is connected to the resistor from the output terminal of the second comparator circuit 16.
_R18 to the second gate drive circuit 17, and this signal is sent to the second gate drive circuit 17.
As a result, the light emitting diode LED ₃ of the photocoupler _{PC 2 emits} light, and upon receiving this light, the light receiving element PE ₃
is turned on, a gate current flows through the gate of the thyristor 18, and the phase of the thyristor 18 is controlled at a certain phase angle of the AC power supply (output in FIG. 3, 18).
Drive the electric pump 104 at a constant rotation speed,
A fixed amount of cleaning water at a set temperature is spouted from the nozzle 103. That is, when the cleaning water is being spouted from the nozzle 103 while the water spouting temperature is maintained at the set temperature (in other words, the heater 2 is not fully energized and is turned on and off by the control of the switching element 5). When the cleaning water is repeatedly controlled to a set temperature), the thyristor 18 is controlled at a constant phase angle to keep the amount of cleaning water discharged by the electric pump 104 constant.

Next, when the wash water is being maintained at the set temperature and being dispensed at a constant rate, the user washes his private parts too quickly, so at time t ₁ in Figure 3, he operates the variable resistor VR ₂ to turn off the wash water. A case will be explained in which the amount of water discharged is increased. In this case, for example, when the heating capacity of the heater 2 is capable of continuously heating cleaning water at 500c.c./min to the set temperature, the water discharge amount is reduced to 600c.c./min.
When the temperature is increased to min, water exceeding the heating capacity of the heater 2 is passed through the heating device 105, so that the temperature of the discharged water falls below the set temperature. Therefore, the input Vt detected by the temperature sensor 4 and input to the amplifier circuit 9 is the input from the reference voltage setting circuit 10.
Since it is smaller than Vs (Vt<Vs), the amplifier circuit 9 outputs a negative voltage _V10 . This negative voltage V ₁₀ is input to the first comparison circuit 13 and the water discharge amount limiting circuit 15 . Then, the first comparison circuit 13
Since the negative voltage V ₁₀ inputted to the first comparison circuit 13 is smaller than the input V ₁₅ inputted from the sawtooth wave generation circuit 12 to the first comparison circuit 13 (a sawtooth wave is more than zero volts), the negative voltage V 10 inputted to the first comparison circuit 13 is An output signal of "H" level is always sent to the first gate drive circuit 14, and the switching element 5 is turned on from the zero degree phase via this circuit 14, and the heater 2 is fully energized. In addition, the water discharge amount limiting circuit 15
The negative voltage V ₁₀ inputted to the operational amplifier A 2 is inverted and amplified and output as a positive voltage V ₂₀ from the output terminal of the operational amplifier A ₂ . Positive voltage from operational amplifier A ₂
When V ₂₀ is output, V ₂₀ becomes the voltage set by equation (4), that is, when a negative voltage is output from the water discharge amount limiting circuit 15, the voltage set by equation (3) is set. The voltage is higher than that of the current voltage and is input to the second comparator circuit 16 (V ₂₅ ). For this reason, the second
from the comparison circuit 16 to the second gate drive circuit 1
The width of the "H" level output signal sent out at 7 (output in FIG. 3 16) is constant, whereas the width of the signal sent out from t to t ₁ in FIG. 3 is constant. ₁ −t ₂
The signals sent out up to this point are also sent out with different widths. Therefore, the phase angle of the thyristor 18 (output in FIG. 3 18) is set to a phase larger than the angle represented by t-t 1 in FIG. ₃ , such as the angle represented by t ₁ -t ₂ . The electric pump 104 is controlled by the corner.
By limiting the current supplied to the electric pump 104, the amount of water discharged from the electric pump 104 is forcibly suppressed. That is,
The amount of cleaning water spouted from the nozzle 103 by the electric pump 104 is changed from 600c.c./min to 500c.c./min.
Reduce to min. Therefore, the amount of washing water that is passed through the heating device 105 is also reduced. This increases the amount of water flowing to the heating device 105 by 500
When the power is reduced to cc/min, the switching element 5 is turned on from the zero degree phase to fully energize the heater 2 at 500 c.c./min, as shown at time t ₁ - _{t 2} in Fig. 3.
Because it has the ability to heat the washing water to the set temperature, a negative voltage was output from the output terminal of the amplifier circuit 9 due to an increase in the amount of water discharged. However, by limiting the water discharge capacity of the electric pump, a positive voltage is output. Voltage or zero volts is output. As a result, the water discharge amount limiting circuit 15 also outputs a negative voltage or zero volts instead of the positive voltage. Therefore, the voltage at the connection point (The output in FIG. 3 returns from the state of _t1 - _t2 to the state of t- _t1 ).

In this way, by increasing the water discharge amount of the electric pump 104, when the discharge temperature of the cleaning water drops below the set temperature, the electric pump 104 is driven and controlled by a command from the control device 6, and the heater 2
By discharging water in an amount commensurate with the heating capacity of the cleaning water, it is possible to always discharge cleaning water maintained at a set temperature.

If the amount of water spouted is suppressed, the switching element 5 performs phase control at a certain point in the phase angle of the AC power supply, cancels the full energization state of the heater 2, and causes the heater 2 to be flushed with cleaning water at the set temperature. It goes without saying that the energization should be controlled within a possible range.

Furthermore, an electric valve or a flow control valve may be used instead of the electric pump to discharge the cleaning water.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects.

The present invention detects the temperature of the sprayed washing water when the amount of washing water spouted from a nozzle exceeds a preset specified value when washing private parts, and this detected temperature is determined as required. If the temperature drops below the set temperature, the amount of water spouted is forcibly reduced until the water spout temperature recovers to the set temperature, without increasing the amount of electricity to the heater to match the water spout amount. In addition, it is configured to automatically reduce the water level and maintain the water discharge temperature at a predetermined set temperature, so that when washing the private parts, the temperature of the washing water decreases, causing discomfort to the user, and preventing the heater from overheating. Accidents such as tripping of the safety breaker due to excessive current flowing beyond the contracted current can be reliably prevented.

In particular, in the present invention, when the variable resistor is operated to increase the amount of wash water spouted, water exceeding the heating capacity of the heater is passed through the heating device, so the water spout temperature falls below the set temperature. Descend. When the discharge water temperature is detected by a temperature sensor,
A negative voltage is output from the amplifier circuit and input to the first comparison circuit and the water discharge amount limiting circuit. Since the input to the first comparison circuit is smaller than the input from the sawtooth wave generation circuit, the first comparison circuit outputs a gate signal to the switching element via the gate drive circuit to control the conduction angle of the element. Then, turn on the heater to full power. On the other hand, the input to the water discharge amount limiting circuit is inverted and amplified and output as a positive voltage from its output terminal, and is input to the second comparison circuit, and this input is
Since the value is larger than the input from the first comparator circuit, a gate signal is output from the second comparator circuit to the thyristor via the second gate drive circuit, and the phase angle of the thyristor is determined by the water discharge amount limiting circuit. is controlled so that the voltage is higher than the state before the negative voltage is input, and the current applied to the washing water supply device is limited, thereby forcing the amount of washing water spouted by the washing water supply device such as the electric pump. be suppressed. That is, the amount of water discharged can be reduced within the range of the amount of water that can be heated by the heating device to the set temperature of the cleaning water. As a result, even if the heater is fully energized, its current value can be limited within the contracted current range by commands from the first comparator circuit, thereby reliably eliminating the negative effects associated with fully energizing the heater. , cleaning water can be smoothly heated at a set temperature. Moreover, when the water discharge temperature of the cleaning water drops below the set temperature, the amount of current supplied to the cleaning water supply device is immediately limited by a command signal from the water discharge amount limiting circuit by controlling the phase angle of the thyristor. Therefore, by increasing the amount of water spouted during private washing, it is possible to avoid the problem of causing discomfort to the user due to the squirting of washing water at a temperature below the set temperature. can. Moreover, when restricting the amount of water spouted, the present invention detects and limits the temperature of the water spouted. In other words, it is only necessary to equip the control device with a water amount limiting circuit. Since there is no need to limit the amount of water spouted or to suppress the amount of electricity supplied to the heater, there is also the advantage that the control device can be manufactured economically with a simple circuit configuration.

Furthermore, when the temperature before heating the wash water is relatively high, such as in the summer, it is possible to obtain wash water at an appropriate temperature (set temperature) even if the amount of water discharged is increased to some extent. On the other hand, in winter, even if the setting is made to increase the amount of water spouted, the amount of water spouted is automatically limited by the operation of the amount limiting circuit, so the set temperature There is no need for the following cleaning water to spout out unexpectedly or to reset the amount of water to be spouted each time, so the user can easily clean the water without any worries.
And it can be used with confidence.

(3) Furthermore, since there is no need to increase the capacity of the heater more than necessary, it can be safely used within the contracted current range for general households, making it a product suitable for equipment used in general households. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of a control device showing an embodiment of the invention, FIG. 2 is a circuit diagram embodying the control device of the invention, and FIG. 3 is a time chart explaining the operation of the invention. 4 and 5 are a partially cutaway plan view and side view of a toilet bowl with a private parts cleaning device. 5... Switching element, 7... Power supply circuit, 8
...Resistance-voltage conversion circuit, 9...Amplification circuit, 10
... Reference value setting circuit, 11 ... Zero cross detection circuit, 12 ... Sawtooth wave generation circuit, 13, 16 ...
...First and second comparison circuits, 15...Water discharge rate limiting circuit, 14, 17...First and second gate drive circuits, 18...Thyristor, 19...Operation switch, 104...Electric pump, 105...
Warming device.

Claims (1)

[Claims] 1. A cleaning water supply device equipped with an electric pump, etc. and a heating device that heats the cleaning water to a required set temperature are connected in the middle of the water supply pipe connecting the water supply source and the nozzle, and the heating device is heated. The device is equipped with a heater and a temperature sensor, and when the washing water supply device is driven, washing water heated to a set temperature by the heating device is ejected from a washing nozzle to wash the private parts. In the toilet bowl with the device, the flush water supply device and the heater built in the heating device are connected in parallel to an AC power source, and the flush water supply device includes a thyristor that controls the energization thereof, and the heater controls the energization of the thyristor. Each switching element is inserted and connected in series with an AC power supply, and each gate of the thyristor and switching element is equipped with a resistance-voltage conversion circuit that outputs the change in resistance of the temperature sensor as a voltage, and a resistance-voltage conversion circuit that outputs the change in resistance of the temperature sensor as a voltage, and a resistance-voltage conversion circuit that outputs the change in resistance of the temperature sensor as a voltage. a reference voltage setting circuit that outputs a voltage corresponding to , an amplifier circuit that is connected to the output terminals of the two circuits and amplifies and outputs the difference between the inputs of the two circuits, and an output of a full-wave rectified waveform from the power supply circuit. a zero-cross detection circuit that outputs a pulse signal at the zero point of the input waveform in response to the input waveform, a sawtooth wave generation circuit that is connected to the zero-cross detection circuit and outputs a sawtooth wave synchronized with the half wave of the AC power supply, and a sawtooth wave generation circuit that is connected to the a first comparator circuit that outputs an "H" level signal when the output of the circuit is higher than the output of the amplifier circuit; When the first gate drive circuit that outputs a gate signal to the amplifier circuit is connected to the amplifier circuit and a positive voltage is output from the circuit, the voltage that maintains the amount of water spouted from the cleaning water supply device at a constant level is set to a negative voltage. A water spouting amount limiting circuit that outputs a voltage that limits the water spouting amount when a voltage is being output, and a water spouting amount limiting circuit that is connected to the circuit and the sawtooth wave generation circuit, and when the output of the circuit is greater than the output of the water spouting amount limiting circuit. a second comparator circuit that outputs an H” level signal;
A control device consisting of a second gate drive circuit that is connected to the second comparison circuit and outputs a gate signal to the thyristor based on an input signal from the circuit is connected, and the amount of water discharged from the cleaning water supply device is controlled by the amount of water discharged from the cleaning water supply device. The second temperature is within the range where the discharge water temperature can be maintained at the predetermined set temperature.
A control device for a toilet bowl with a private parts cleaning device, characterized in that a thyristor is controlled at a constant phase angle by the output from a gate drive circuit.