JPH0128182B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature control device for washing water in a toilet bowl with a washing device, which sprays washing water at an appropriate temperature toward the private parts after defecating to wash the private parts.

In recent years, from the viewpoint of hygiene, toilet bowls equipped with a cleaning device that spray water at an appropriate temperature to clean the private parts of the body after defecating have come into use. For example, as shown in FIGS. 1 and 2, a water supply pipe 102 connected to a water supply source (not shown) is connected to a solenoid valve 101 on a toilet seat 101 of a toilet bowl.
03, a nozzle 104 is attached to the tip of the pipe, and a heater and a sensor are housed in a casing between the nozzle 104 and the solenoid valve 103. 1
05 is inserted, the heater is connected to a power source via a switching element, and when the operation switch 106 is turned on, the valve opening of the solenoid valve 103 is opened, and the temperature of the water discharged from the heating device 105 is detected by the temperature sensor. In response to this detection signal, the switching element is closed to energize the heater, and the water is heated by the heater, and cleaning water at an appropriate temperature is jetted from the nozzle 104 to clean the private parts. That is, the temperature of the cleaning water is maintained at a constant temperature by controlling the energization by a switching element that opens and closes the heater in response to a detection signal from a sensor. However, with this configuration, the speed of water flowing through the heating device 105 is the same, so if the temperature of the water entering the heating device 105 is low, the heater is energized. It takes more time to heat this water to a predetermined temperature (that is, the temperature that makes the temperature of the cleaning water spouted from the nozzle 104 an appropriate temperature, for example, 39° C.) than when the temperature of the incoming water is high. In other words, the water flowing through the heating device 105 will be ejected from the nozzle 104 before the temperature has sufficiently risen to a predetermined temperature. That is, there is a problem in that cleaning water at a temperature slightly lower than the appropriate temperature is spouted out, causing discomfort to the user. Particularly in the case of this type of equipment, it is not desirable if the temperature of the washing water is too high or too low, as this may cause discomfort to the user. Therefore, it is possible to increase the capacity of the heater and increase the detection sensitivity of the sensor to control the energization of the heater. The problem is that the fluctuations cause "flickering" in the lighting equipment, which is extremely unpleasant to the human eye, making it unsuitable for this type of equipment used in ordinary homes. have. In addition, the heating device 105
It is conceivable to increase the heating time of the water flowing through the heating device 105 so that the water flowing through the heating device 105 is heated to a predetermined temperature even if the temperature of the water entering the heating device 105 is low, but this would complicate the structure and increase the cost. It has the disadvantage of being stored away. The present invention has been made in view of the above-mentioned points, and its purpose is to correct the detection value of a sensor according to the temperature of incoming water with a simple configuration, and to spray cleaning water at an appropriate temperature from a nozzle. ,
Moreover, it is an object of the present invention to provide an apparatus which can suppress flickering during use.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 5. Components that are the same as those in FIGS. 1 and 2 will be described using the same reference numerals. In FIG. 3, reference numeral 1 denotes a power terminal (power plug) connected to an AC power source (for example, AC100), which is not shown. 2 is case 3 of the heating device 105
A heater is disposed inside the main sensor 5 and an auxiliary sensor 13, and is connected to the power supply terminal 1 via a switching element 4 made of a triax or the like.
The heating device 105 connects the water supply pipes 102 to the water inlet 3 _a and the water outlet 3 _b of the cylindrical case 3 to communicate with each other, and the heater 2 disposed inside the case 3 , is formed by printing a resistor on the surface of a hollow cylindrical ceramic, coating it with a ceramic insulation protective layer, and sintering it at high temperature.The heater 2 is installed near the water inlet _3a of the case 3. The water that enters from the water inlet _3a passes through the hollow of the ceramic, contacts the surface of the ceramic, and is discharged from the water outlet _3b.When this water passes through the surface of the ceramic, the heater generates heat due to electricity. 2 and is heated and discharged. Further, the auxiliary sensor 13 is formed by printing a resistor on the hollow inner peripheral surface of the ceramic at a position close to the water inlet _3a of the case 3, similar to the heater 2, and detects the temperature of water entering the heating device 105. I'm starting to do that. Furthermore, the main sensor 5 is formed by printing a resistor on the surface of a bar-shaped ceramic body as described above, coating the ceramic insulating protective layer thereon, and sintering this at high temperature. It is arranged in the water supply pipe 102 near the water outlet _3b to detect the temperature of water discharged from the water outlet _3b . The main sensor 5 and the auxiliary sensor 13 exhibit a positive characteristic in which the resistance value increases as the temperature increases. In addition, in the case 3, even if the water supply is temporarily stopped, a certain amount of water (for example, about 80 c.c.) remains in order to prevent so-called "dry boiling" by the heater 2. This residual water is heated to heater 2.
This residual water is detected by the main sensor 5 and the auxiliary sensor 13 to prevent overheating by the heater 2, and thereby the switching element 4 is controlled to open and close. Next, case 3 of the heating device 105
Water inlet 3 Solenoid valve 1 installed in the water supply pipe 102 on _{the a} side
03, its valve passage is connected to the water supply pipe 102, and the valve passage is normally closed and opened by excitation of the coil _103X .
_X is connected to the control device 6 connected from the power supply terminal 1 via an operation switch 106, and the valve passage of the solenoid valve 103 is opened and closed by the operation switch 106.

Next, the control device 6 will be explained. 7 is a power supply circuit connected to the above power supply terminal 1, and a solenoid valve 10
An output is sent to the coil _103X of the electromagnetic valve 103 via the valve operation detection circuit 8 which detects the operation No. 3 (valve path closing operation) and the operation switch 106. Reference numeral 9 denotes a resistance-voltage conversion circuit connected to the main sensor 5, which converts the change in resistance value detected by the main sensor 5 into a voltage and outputs it. Reference numeral 10 denotes an amplifier circuit into which the output V _t of the above-mentioned resistance-voltage conversion circuit is input, and the other input terminal of the amplifier circuit has an output corresponding to the temperature of the cleaning water jetted from the nozzle 104 (for example, 39° C.) as a voltage. Reference value setting circuit 11 for setting
The output signal V _s is inputted, and these two inputs are compared, and when both inputs have a relationship of V _t ≦V _s , a signal V ₁₀ with an output of zero is sent out. 12 is a set value correction circuit whose output end is connected to the reference value setting circuit 11 and whose input end is connected to the output end of the valve operation detection circuit 8; When a detection signal is received when the reference value setting circuit 11 receives a detection signal, the output V _c is sent to the reference value setting circuit 11, and the output V _s of the reference value setting circuit 11 is corrected by V _c (V _s - V _c ). ing. For example, if the output V _s is set to an output corresponding to 39°C and the output V _c is set to an output corresponding to 5°C, when the valve path of the solenoid valve 103 is closed, the output of the reference value setting circuit 11 is set to 39°C. The correction is made so that the output corresponds to -5°C = 34°C. Reference numeral 16 denotes a zero-cross detection circuit which 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. Reference numeral 15 is connected to the output terminal of the zero-cross detection circuit 16, and outputs a sawtooth wave V which is set to zero by the pulse signal of the zero-cross detection circuit 16 and synchronized with the half-wave of the AC power input to the power supply terminal 1. This is a sawtooth wave generation circuit that sends out ₁₅ . 14 is a comparison circuit connected to the output terminals of the amplifier circuit 10 and the sawtooth wave generation circuit 15, and these two inputs V ₁₀ and
V ₁₅ and the output of sawtooth wave generation circuit 15
When V ₁₅ exceeds the output V ₁₀ of the amplifier circuit 10 (V ₁₀ ≦V ₁₅ ), an "H" level output signal is sent out. 17 is a gate drive circuit connected to the output terminal of the comparator circuit 14, which outputs "H"
A gate signal is sent to the switching element 4 in response to a level input signal. To further explain this with reference to FIG. 4 which embodies this control device 6, a power supply circuit 7 is connected to a power supply terminal 1 by a power transformer.
Connect the primary side of T ₁ , connect the AC input end of diode bridge DB ₁ , which has diodes formed into a bridge circuit, to both ends of the secondary coil with center tap, _and Capacitors C ₁ and C ₂ are connected in series at the output terminal via a diode D ₁ inserted in the forward direction, and the connection point of these capacitors C ₁ and C ₂ is the center of the secondary coil of the power transformer T ₁ . Connect this to the tap and ground it, and from this ground point (connection point of C ₁ and C ₂ ), connect a positive power source by double-wave rectification between the terminals of capacitor C ₁ , and connect it between the terminals of capacitor C ₂ . Negative power sources are derived from each. Then, the collector of the transistor Q ₁ is connected to the connection point between the cathode of the diode D ₁ and the capacitor C ₁ , and the base is connected through the base resistor R ₁ .
A constant voltage diode with an anode grounded on this base.
Connect the cathode of ZD ₁ , insert a capacitor C ₃ between the emitter of transistor Q ₁ and the anode of constant voltage diode ZD ₁ , and connect the constant voltage power supply V _D from the emitter of transistor Q ₁ to the operation of each of the above circuits. It is designed to be supplied as a power source. Further, between the terminals of _the capacitor C ₂ , _an operating switch ₁₀₆ and a coil ₁₀₃ The negative power source derived from between the terminals of _C2 is supplied to the coil _103X of the electromagnetic valve 103 via the operating switch 106 through the diode _D2 . The valve operation detection circuit 8 connects the emitter of the transistor Q ₂ to the anode of the diode D ₂ , and
The emitter of the transistor Q ₁ of the power supply circuit 7 is connected to the base via a resistor R ₂ and the cathode of the diode D ₂ is connected to the base, so that the collector of the transistor _{Q 2 is} formed as an output terminal. The resistance-voltage conversion circuit 9 is a constant voltage power supply V _D
A resistor R ₃ and a capacitor C ₄ are inserted in series between the output terminal and the ground, and the connection point between the resistor R ₃ and the capacitor C ₄ is formed as the output terminal. The main sensor 5 and the auxiliary sensor 13 are inserted in series between the connection point of the resistor R ₃ and the capacitor C ₄ and the ground, and the auxiliary sensor 1
A resistor R ₁₆ is inserted between the terminals of the resistor R 3 and R 16 , and the resistance value corresponding to the temperature detected by the main sensor 5 and the auxiliary sensor 13 and the output voltage divided by the resistors R ₃ and R ₁₆ are connected to the resistor-voltage conversion circuit 9. It is designed to be sent out from the output terminal as an output V _t . The reference value setting circuit 11 has a variable resistor VR ₁ and a resistor R ₄ inserted in series between the constant voltage power supply V _D and the ground, and the connection point between the variable resistor VR ₁ and the resistor R ₄ is formed as an output terminal. End output V _s
When the detected temperature of the auxiliary sensor 13, that is, the inlet water temperature is, for example, 20°C, as described above, the nozzle 1
A reference value is set so that the temperature of the washing water spouted from 04 is a set temperature (for example, 39° C.), and a voltage corresponding to this value is sent out as an output. A set value correction circuit 12 consisting of a resistor _R5 is inserted between the output terminal of the reference value setting circuit 11 and the output terminal of the valve operation detection circuit 8 (collector of the transistor _{Q2 )} .
When conductive, the resistor _R5 becomes the ground potential and is inserted in parallel with the resistor _R4 of the reference value setting circuit 11, thereby setting the output of the reference value setting circuit 11 to (V _s - V _c ). It is now being corrected. The amplifier circuit 10 connects the inverting input terminal of a single power supply operational amplifier _A1 to the output terminal of the reference value setting circuit 11 via a resistor _R7 , and connects the non-inverting input terminal to the output terminal of the resistor-voltage conversion circuit 9 via a resistor. Connect through R ₆ and resistor to the output terminal and inverting input terminal of this operational amplifier A ₁
Inserting R ₁₇ and R ₁₈ in series, as well as resistors R ₁₇ and
Connect the connection point of R ₁₈ to ground through resistor R ₁₉ and input
Compare V _s and V _t , and when both inputs V _s and V _t have a relationship of V _s ≧ V _t , output a zero signal, and when V _s < V _t
When there _is a _{relationship between}
(R ₇ = R ₆ ) It is designed to amplify and output at an amplification degree (for example, several hundred times) determined by R ₁₇ , R ₁₈ , and R ₁₉ . The zero cross detection circuit 16 connects a transistor _Q3 whose emitter is grounded via a resistor _R8 to a constant voltage power supply _VD .
Connect the collector of and connect the resistor between the base and emitter.
_R9 is inserted, and the anode of the diode _D3 whose cathode is connected to the base is connected to the positive DC output terminal of the diode bridge DB1 of the power supply circuit 7 through the resistor _R10 , and the collector of the transistor _Q3 is connected to the positive side DC output terminal of the diode bridge _DB1 of the power supply circuit 7. is used as the output terminal, and a pulse signal is sent from the output terminal (collector) by transistor _Q3 , which turns off at the zero point of the full-wave rectified voltage. The sawtooth wave generation circuit 15 has resistors _R13 and _R12 and a capacitor _C6 inserted in series between the constant voltage power supply _VD and the ground.
The cathode of a diode _D4 whose anode is connected to the connection point of the above-mentioned resistors _R13 and _R12 is connected to the collector of a transistor _Q4 whose emitter is grounded, and the above-mentioned zero cross detection is connected to the base of this transistor _Q4 via a resistor _R11 . Connect the collector of transistor Q ₃ of circuit 16, and use the connection point of resistors R ₁₃ and R ₁₂ as the output terminal. When transistor Q ₄ is off, capacitor C ₆ is charged through resistors R ₁₃ and R _{12 and} output. The voltage at the terminal increases, and when transistor _Q4 is turned on, capacitor _C6 discharges in the circuit of resistor _R12 → diode _D4 → collector-emitter of transistor _Q4 → _C6 , and the voltage at the output terminal quickly becomes zero. , and outputs a sawtooth waveform output V ₁₅ that is synchronized with the half-wave of the AC power input to the power supply terminal 1. The comparison circuit 14 connects the output terminal of the operational amplifier A ₁ of the amplifier circuit 10 to the inverting input terminal of the operational amplifier A ₂ and connects the output terminal of the sawtooth wave generation circuit 15 to the non-inverting input terminal.
The output terminal of _A2 is connected to the constant voltage power supply _VD through the resistor _R14 , and when the output V15 of the sawtooth wave generation circuit ₁₅ becomes larger than the output _V10 of the amplifier circuit 10 ( _V10 ≦V ₁₅ ) “H” sent from operational amplifier _A2
The level output signal is sent out as the output of the comparator circuit 14. Gate drive circuit 1
7 connects the base of a transistor _Q5 whose emitter is grounded to the output terminal of the operational amplifier _A2 , and connects the anode of a diode _D5 whose cathode is connected to the collector of this transistor _Q5 to the switching circuit via the resistor _R15 . It is connected to the gate of element 4, and when the input is an "H" level signal, transistor _Q5 is turned on and switching element 4 is turned on. 18 is a noise absorption circuit for preventing the noise generated by opening and closing of the switching element 4 from spreading to the power supply side. A reactor L ₁ is inserted between the heater 2 and the switching element 4, and the reactor L ₁ and the switching element 4 It is formed by inserting a capacitor _C7 in parallel in a series circuit with.

Next, its operation will be explained. First, when the power supply terminal 1 is connected to an alternating current power source (for example, AC100, 60Hz), the power supply circuit 7 receiving the alternating current power (Fig.
input) is transformed by a power transformer _T1 , and is full-wave rectified by a diode bridge _DB1 (Fig.
output of DB ₁ ), capacitor through diode D ₁
The Zener voltage of the constant voltage diode _{ZD 1 is} applied to the base of the transistor Q ₁ from the positive power supply smoothed by C 1 through the resistor R ₁ , turning on the transistor Q ₁ , and the emitter voltage is smoothed by the capacitor C ₃ . Then, the constant voltage power supply V _D for operation is connected to each circuit 8, 9,
11, 14, 15 and 16. On the other hand, the negative power smoothed by the capacitor _C2 is applied to both ends of the series circuit of the operating switch 106 and the coil _103X of the solenoid valve ₁₀₂ via the diode D2. When the operation switch 106 is turned on in this state (time _t1 in FIG. 5), the coil _103X of the solenoid valve 103 is energized and the valve path of the solenoid valve 103 is opened. As a result, the transistor _Q2 of the valve operation detection circuit 8 is turned off and the detection signal stops, and the output _Vc of the set value correction circuit 12 that receives this also stops. Water then flows through the heating device 105 through the water supply pipe 102. In the initial state, the detected temperatures of the main sensor 5 and the auxiliary sensor 13 are low, so the resistance value is also low, so both inputs of the amplifier circuit 10 are
Since there is a relationship of V _s ≧ V _t , the output V ₁₀ is zero, and the output signal of the comparator circuit 14 that receives this becomes “H” level, turning on the transistor Q ₅ of the gate drive circuit 17, thereby turning on the output signal. Switching element 4
is turned on, and the heater 2 is energized. The water flowing through the heating device 105 is thereby heated. This heated water is discharged from the water outlet _3b of the heating device 105, and the resistance value of the main sensor 5 that detects this also increases in accordance with the increase in the detected temperature, which causes the output of the resistance-voltage conversion circuit 9. Although V _t will also rise, the relationship between both inputs V _s and V _t of the amplifier circuit 10 is
Until the relationship V _s < V _t , the output of the amplifier circuit 10
Since V ₁₀ is at zero, heater 2 continues to be energized. Then, when the input V _t of the amplifier circuit 10 becomes larger than V _s (V _S <V _t ), the amplifier circuit 10 outputs the difference between both inputs (V _s −V _t ) amplified by a predetermined amplification degree.
Sends V ₁₀ . In response to this, the comparator circuit 14 compares the input V ₁₀ with the other input V ₁₅ , so that the input V ₁₅ becomes V ₁₀
Greater period (while in the relationship V ₁₅ ≧ V ₁₀ )
Sends out “H” level output. At this time, the zero-cross detection circuit 16, which receives the full-wave rectified voltage from the diode bridge DB ₁ of the power supply circuit 7, is turned off while the base input of the transistor Q ₃ is lower than the base-emitter voltage (for example, 0.6), and the collector is turned off. Since the pulse signal is sent out in synchronization with the zero point of the power supply voltage input to the power supply terminal 1 (output shown in FIG. 5, 16), the sawtooth wave generation circuit 15 receiving this pulse signal,
When the above pulse signal is received, the transistor Q ₄ is turned on to discharge the capacitor C ₆ , and during the period when the pulse signal is stopped, the transistor Q ₄ is turned off and the capacitor C ₆ is connected to the resistor R ₁₃ by the constant voltage power supply V _D .
It is charged through _R12 and a sawtooth wave output signal is generated in synchronization with the zero point of the AC power supply. This sawtooth waveform output signal is repeatedly generated at a level that is higher than the zero level by the forward voltage drop of the diode _D4 (for example, 0.6) ( _V15 of the input in FIG. 14). Therefore, the comparison circuit 14
When the input V ₁₀ is zero, the output of “H” level will be continuously sent out, and when the input V ₁₀ is zero, the output of
If the signal is in the relationship V _s < V _t , the input
The lower the level of V ₁₀ is compared to V ₁₅ , the wider the "H" level output width will be sent out (output in FIG. 5, 14). energization control of the heater 2. As a result, the heating device 105
The water flowing through the nozzle 104 is heated, and the temperature of the cleaning water jetted from the nozzle 104 is at an appropriate temperature. Since the switching element 4 is phase-controlled in this manner, voltage fluctuations during use are made gentler, and the occurrence of "flickering" or flickering in the lighting equipment is also prevented.

Next, when the user turns off the operation switch 106 (time _t2 in FIG. 5), the valve path of the electromagnetic valve 103 is closed because the coil _103X is de-energized. This causes the base voltage of the transistor _Q2 of the valve operation detection circuit 8 to rise and turn on. As a result, one end of the resistor _R5 of the set value correction circuit 12 becomes the ground potential, and the resistor _R5 becomes the reference value setting circuit 1.
1 resistor R ₄ is inserted in parallel (Fig. 5, 12),
The output V _s of the reference value setting circuit 11 is lowered (the fifth
₁₀ ), this _dropped output is sent to the amplifier circuit 10. On the other hand, the solenoid valve 10
By closing the valve passage No. 3, water (for example, 80 c.c.) remains in the case 3 of the heating device 105, and the temperature of the remaining water rapidly rises due to the heat generated by the heater 2. The auxiliary sensor 13 and main sensor 5 that detected this
Due to the sudden rise in the detected temperature, the resistance value also rises rapidly, and in response to this, the output V _t of the resistance-voltage conversion circuit 9 also rises, and both inputs V _s and V _t of the amplifier circuit 10
The relationship is V _s <V _t , and the output level also becomes high. Therefore, V ₁₀ of the comparator circuit 14 becomes higher than the input V ₁₅ , and therefore, the "H" level output width of the comparator circuit 14 becomes narrower, and as a result,
The conduction angle of the switching element 4 is controlled to be narrow (that is, the firing angle is increased), the energization time of the heater 2 is shortened (Fig. 5, 2), the amount of heat generated is suppressed, and so-called "dry firing" is prevented. At the same time, the temperature of the cleaning water rises to an appropriate temperature at the next time of use.

In the above operation, if the water temperature entering the heating device 105 drops from, for example, 20°C to 0°C due to seasonal fluctuations, this is detected by the auxiliary sensor 13, and the resistance value decreases in accordance with the detected temperature. As a result, the output V _t of the resistance-voltage conversion circuit 9 is lowered, and the output width of the "H" level output signal of the comparison circuit 14 is controlled to be wider. Therefore, the energization time of the heater 2 becomes longer, and the heater 2 is controlled to quickly rise to the temperature of the cleaning water spouted from the nozzle 104.

According to the present invention, the detection value of the main sensor that detects the temperature of the washing water is compared with a reference value determined from the optimum temperature of the washing water, and when the value is equal to or lower than this reference value, an output of zero is sent out. Since the conduction angle of the switching element is controlled by comparing the output of the amplifier circuit and the output signal of a sawtooth wave synchronized with the AC power supply, the temperature of the cleaning water during use can be quickly raised to the optimum temperature. can be raised.
In addition, an auxiliary sensor that detects the water temperature entering the main sensor is connected in series, and the output of the resistance-voltage conversion circuit is corrected in response to changes in the water temperature, so even if the water temperature changes, the heater The energization time can be controlled accordingly, and the temperature of the cleaning water can be raised quickly during use, without causing any discomfort to the user. In addition, an auxiliary sensor that detects the inlet water temperature is inserted in series with the main sensor, so if you set a constant based on the reference inlet water temperature, the detected value will be corrected according to changes in the inlet water temperature throughout the four seasons and cleaning will be possible. The temperature of the water can be controlled, and the user does not have to worry about changing the settings according to seasonal fluctuations, making this type of equipment suitable for general household use. Furthermore,
Since the heater continues to be energized while the detected value is lower than the reference value, the firing angle of the switching element that controls the heater's energization is frequently changed to prevent lighting fixtures from flickering due to voltage fluctuations. It has remarkable effects such as being able to prevent

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of the toilet bowl with flush water; Fig. 2 is a partially cutaway side view of Fig. 1;
FIG. 3 is a block diagram showing an embodiment of the present invention, and FIG.
This figure is a block diagram showing a more specific version of the configuration shown in FIG. 3, and FIG. 5 is a time chart explaining the operation. 1: Power terminal, 2: Heater, 3: Case, 3
_a : Water inlet, 3 _b : Water outlet, 4: Switching element, 5: Main sensor, 8: Valve operation detection circuit,
9: Resistance-voltage conversion circuit, 10: Amplification circuit, 1
1: Reference value setting circuit, 13: Auxiliary sensor, 12:
Set value correction circuit, 14: Comparison circuit, 15: Sawtooth wave generation circuit, 103: Solenoid valve, 103 _X : Coil, 104: Nozzle, 105: Warming device, 10
6: Operation switch.

Claims (1)

[Claims] 1 A flow path is formed by inserting a heating device containing a heater and a sensor that detects the temperature of water in a cylindrical case into the water supply pipe that connects the water supply source and the nozzle installed in the toilet bowl. , the heater is connected to a power source via a switching element, and the gate of the switching element is connected to a resistor that outputs the change in resistance of the sensor as a voltage.
A voltage conversion circuit and a reference value setting circuit determined from the set temperature of the cleaning water spouted from the nozzle are connected to both circuits so that when the output of the conversion circuit is below the reference value, an output of zero is sent out. An amplifier circuit, a sawtooth wave generation circuit that sends out a sawtooth wave output synchronized with the power supply, and a comparison circuit that sends out an "H" level output for a period when the output of this circuit is greater than the output of the amplifier circuit. A control device is provided with a control device, and an auxiliary sensor is installed at the water inlet of the case, and a main sensor is installed at the water outlet of the case.Both sensors are connected in series, and the detected value of the main sensor is used as the inlet water temperature. 1. A temperature control device for flushing water in a toilet bowl with a flushing device, characterized in that the temperature is corrected by: