JPS60115735A - Toilet bowl puvic cleaning apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toilet bowl with a private parts cleaning device that sprays cleansing water warmed to an appropriate humidity toward the private parts after defecation to clean the private parts.

2. Description of the Related Art In recent years, toilet bowls equipped with private parts cleaning devices that spray out cleansing water at an appropriate temperature to clean private parts after defecating have come into use. This kind of box is, for example,
As shown in Fig. O/ and Fig. 2, the toilet seat 10/ of toilet bowl A is
A water supply pipe 102.102h connected to a water pipe is connected to a solenoid valve 103 and a heating device 10S so that warm water for cleaning is spouted toward the private parts of the person, and a nozzle 1011 is attached to the tip of the water supply pipe 102.102h. The heating device 10S inserted between the electromagnetic valve 103 and the nozzle 10g is provided with a heater and a temperature sensor housed in a case, and the heater is connected to a power source through a switching element and is not used. In this case, the solenoid valve 103 is opened by turning on the operation switch 10B, the temperature of the water flowing into the heating device 105 is detected by a temperature sensor, and the switching element is closed based on the detection signal of this sensor. The heater is energized, the water is heated by the heater, and the wash water at an appropriate temperature is ejected from the nozzle 10g to clean the private parts. The temperature of the washing water is controlled to a constant temperature (approximately 3g0
C) is held. However, in the private area cleaning device having the above configuration, as shown in Fig. 6, the heated cleaning water is heated at a position on the same plane and adjacent to the heating element t of the heater 3 housed in the case Ω. Since the temperature sensor S that detects the temperature of This method has the disadvantage that it is easy to detect the temperature due to heat transfer, but it is not possible to accurately detect the temperature of the heated washing water. This is because when heat transfer from the heating element V to the cleaning water partially decreases due to limescale etc. adhering to the surface of the heater 3, the temperature sensor S detects the temperature due to heat transfer from the heating element L. As a result, the ability to detect the temperature of the cleaning water decreases, and as a result, the heater 3 is controlled, and as a result, cleaning water with a temperature lower than the appropriate temperature is discharged, often causing discomfort to the user. For this reason, Fang 7
As shown in the figure, a temperature sensor S for detecting the temperature of the heated washing water has been installed immediately after the outlet of the case 2 to solve the above-mentioned drawbacks, but in this case The temperature sensor S has the advantage of being able to accurately detect the temperature of the heated cleaning water and control the energization of the heater 3. However, a temperature controller B is installed near the temperature sensor S to prevent abnormal overheating of the heater 3, and the difference in the set temperature between the temperature sensor S and the temperature controller B is If it is made thicker, if the temperature sensor 5 malfunctions, fairly high temperature cleaning water will be sprayed out before the temperature controller B is activated, increasing the risk of scalding the user. Considering safety, the set temperature of the temperature controller B is close to that of the temperature sensor S. However, for example, if you turn off the power to your private area cleaning device due to a power outage at 8 o'clock or because you will be away from home for a certain period of time due to travel, etc., the temperature of the cleaning water remaining in the case Ω will be controlled. When the temperature drops below 1 degree (approximately 3 degrees Celsius), the heater 3 in the heating device 105 will be fully energized when the power outage is restored or the device is plugged into the power source. Therefore, the water on the surface of the heater 3 is rapidly heated. As a result, the heating device l
Washing water is not passed through the O5, the temperature sensor 5 is placed at a position further away from the temperature controller B, and the set temperatures of the temperature sensor 5 and the temperature controller B are safe. In addition to being approached from Kamimiike,
During the heating of the washing water, the temperature sensor S detects the water temperature and before the control circuit restricts the energization of the heater 3, the temperature regulator B operates first and cuts off the JIJ1 force to the heater 3. After that, there were cases where it became impossible to heat the washing water.

In this case, the cleaning water is passed through the heating device 1O3 (that is, the electromagnetic valve 103 is opened and the cleaning water is passed through the heating device 103, heated, and ejected from the nozzle 70 to treat the local area). There is no problem if you set the temperature of the temperature controller to a high value, such as when cleaning is being performed, or when the temperature controller is set to a high temperature. When inserting the A7 into the A7, each time the washing water must be passed through the heating device 1O5 and heated to a temperature suitable for private parts washing, the user is forced to perform unnecessary operations. This is extremely inconvenient.Also, if the operating temperature of the temperature controller B is set much higher than the temperature set for heating the washing water by the temperature sensor S, as mentioned above, the temperature sensor 5 When a failure occurs, high-temperature cleaning water is sprayed out, so if human safety is taken into account, it is difficult to increase the set temperature of the temperature controller B. Furthermore, once the temperature controller B has been activated, it cannot be automatically reset for safety reasons; in other words, it is constructed so that it can only be reset manually. For this reason, each time temperature controller B was activated, the device was disassembled and the cause of temperature controller B activated was investigated, and then temperature controller B was manually reset. The present invention eliminates the above-mentioned drawbacks and eliminates the problem that the cleaning water is not passed through the heating device that heats the cleaning water. When the temperature of the cleaning water remaining in the heating device is below the set temperature of the temperature sensor that determines the heating temperature of this cleaning water, when the heater in the heating device is energized, the tolerance of this heater is By setting the current to prevent the heater from being fully energized and suppressing the rapid rise in temperature of the wash water, it is possible to prevent the temperature 1ν regulator, which prevents abnormal overheating of the heating device, from malfunctioning. The purpose of the present invention is to provide a toilet bowl with a frifiable internal cleaning device, which is a stomach-keeping device that heats and maintains the water temperature in the heating device at an optimum temperature. In the middle, // is a power supply terminal connected to an AC power supply (for example, ACloOv), not shown. O12 is a heater housed and installed in the case of the heating device 105, and is connected to four power terminals via a switching circuit made of a triac or the like. //IF-qk has been done. The water heating device 105 has water supply pipes 10) and 102a connected to the inlet 2a and the water outlet 2b of the cylindrical case 72, and the water supply pipe 102 near the water outlet 2b of the case Ω.
A temperature sensor S for detecting the temperature of the washing water heated by the heater/2 is housed in the space a. The sensor 5 used exhibits a positive characteristic in which the resistance value increases as the temperature increases. The heater 2 housed in the case 2 is formed by printing a resistor on the surface of a hollow cylindrical ceramic, providing a ceramic insulation layer thereon, and sintering it at high temperature. This heater/2 is placed near the water inlet 2a of the case 2, and the cleaning water that flows in from the water inlet 2a passes through the hollow cylindrical heater 7.2 and then reaches the surface of the heater/2. The cleaning water is discharged from the water outlet 2b in contact with the heater/,! When passing through the surface, it is heated by the heater 2 which generates heat due to electricity and is discharged. In addition, the above-mentioned Caseco has a system that prevents so-called "dry heating" by the heater/2 even if the water supply is temporarily interrupted.
When a certain amount of cleaning water remains, this residual water is detected by a temperature sensor S to prevent abnormal overheating of the heater 2, and thereby the opening and closing of the switching element 2 can be controlled. Next, the solenoid valve 103 installed in the water supply pipe 102 on the water inlet 2a side of the case Ω has a valve path that is normally closed and is opened by excitation of the coil. It is connected to the control device 7 connected from the source terminal // via an operation switch 10B, and the valve passage of the solenoid valve 103 is opened and closed by this operation switch 10B.

Moreover, between the solenoid valve 103 and the caseco water inlet 2a,
A water flow sensor g for determining whether or not cleaning water is flowing into the case λ is added to the water supply pipe 70.2.

Furthermore, a temperature regulator is installed on the outside of the case 2 to prevent the washing water from becoming abnormally overheated due to a malfunction of the temperature sensor 5, etc., and the surface temperature of the case 2 is adjusted to the set temperature. When the temperature reaches 100C (approximately 100C higher than the set temperature of temperature sensor S), this temperature controller B is connected to the power terminal // in order to block the power supply to heater /2 and stop the water flow. connected in series.

Next, the control device 7 will be explained. /3 is a power supply circuit connected to the above-mentioned power supply terminal //, which causes the coil trap output of the solenoid valve 103 to be sent out via the operation switch 10B.

/l is a resistance-voltage conversion circuit connected to the sensor 5, which converts the change in resistance detected by the sensor S into a voltage and outputs it. /S is an amplifier circuit into which the output Vt of the above-mentioned resistance-voltage conversion circuit /l is input, and a nozzle /O4Z 7 is connected to the other input terminal of the amplifier circuit.
) - A reference value setting circuit that sets the output corresponding to the temperature of the cleaning water (approximately 31r0C) used by TK riE/B. When is vt-7, a signal v10 with an output of zero is sent out. /7 is a zero-cross detection circuit which receives the full-wave rectified waveform output from power supply circuit /3 and sends out a Norse signal at the zero point of the input waveform. 7g is connected to the output terminal of the zero-cross detection circuit/7, and outputs a sawtooth wave synchronized with the half-wave of the AC power input to the power terminal // by making the output zero by the pulse signal of the zero-cross detection circuit/7. This is a sawtooth 1 wave generation circuit designed to send out V15. / is a circuit connected to the output end of the amplifier circuit /S and the sawtooth wave generation circuit /g. Output V15 of circuit 7g and amplifier circuit 15
When the output v10 is v15≧v10, it outputs an output signal of 1H'' level, and when V:L5 (VIO, it outputs an output signal of 1L level. 20 is the output terminal of the above comparison circuit/ri. with a gate drive circuit connected to ′
A gate signal is sent to the switching element WA by the input signal of the H level. 2/ is a running water detection circuit connected to the output terminal of the sawtooth wave generating circuit /g and the running water sensor g, and its output terminal is connected to the input terminal of the gate drive circuit 20 together with the output terminal of the comparison circuit /9. The running water detection circuit 2/ compares the output v2o obtained from the sawtooth wave generation circuit/g with the output V25 from the running water sensor g, and when there is a relationship of v20≧V 2' 5, running water is detected. The output of circuit 2/ is turned off and V
The output of the running water detection circuit 2/ is turned on only when the relationship is 25-V20.

To further explain the details of the control device 7 using a diagram, '? , ff, 4% circuit /3 connects the seventh side of the power transformer T1 to the source terminal // via the temperature controller O, and the secondary side connects both ends of the coil to the AC input terminal of the diode bridge DB1. Connect to diode bridge DB
Diode D inserted in the forward direction at the positive DC output end of I
1 and capacitors C1 and 02 are connected in series, the collector of the transistor Q1 is connected to the cathode of the diode D1, the pace is connected via the base resistor R1, and the cathode of a constant voltage diode ZD'l whose anode is grounded is connected to the base. A capacitor C3 is connected between the emitter of the transistor Q1 and the anode of the constant voltage diode ZDI.
is inserted to supply a constant voltage power supply Vcc from the emitter of the transistor Q1 as an operating power supply for each of the above circuits,
An insertion switch 10B and a solenoid valve 103 are inserted in series at the connection point between capacitors C1 and 02, and the negative full-wave rectified voltage of the diode bridge DBI is smoothed by the capacitor C2 and then passed through the operation switch 10B. Solenoid valve/03'
Supply Ic. The resistor -W, rE conversion circuit/l is formed by inserting a resistor R2 and a temperature sensor S in series between the constant voltage power supply Vcc and the ground, with the contact point of the resistor R2 and the temperature sensor S as an output terminal, and the temperature sensor The resistance value corresponding to the temperature detected by S and the voltage-divided output by the resistor R2 are sent out from the output end as the output Vt of the resistance-to-pressure conversion circuit/l. Reference value setting circuit/B inserts a variable resistor VRI and a resistor R3 in series between the constant direct ETE power source Vcc and the ground, forms the connection point of the variable resistor VRI and resistor R3 as an output terminal, and connects this output terminal. The output Vθ of
A reference value is set so that the temperature of the cleaning water spouted from the nozzle 70 is a set temperature (approximately 3g0C), and the corresponding city and field are sent out as output. The amplifier circuit /S connects the inverting input terminal of the single power supply operational amplifier OPI to the output terminal of the reference value setting circuit /B via a resistor R4,
The non-inverting input terminal is connected to the output terminal of the resistance-voltage conversion circuit/4' via a resistor R5, and resistors R6 and R7 are inserted in series between the output terminal of the amplifier OPI and the inverting input terminal.
Then, the connection point of resistors R6 and R7 is grounded via resistor R8, and the input 7 days and Vt are compared, and the power of both of them is Vs).
When Vt is in the relationship Vs≧Vt, the output zero signal is
Vs (when there is a relationship with Vt, the difference cvs-vt) is amplified by the amplification degree (for example, 700 times) determined by the resistor R4 (R3=R4) R6, R7, and R8 and output.

Zero cross detection circuit/7 with constant voltage power supply Vcc and resistor R9
A resistor RIO is inserted between the base and emitter, and the anode of the diode D2 whose cathode is connected to the base is connected to the positive DC output of the diode bridge DBI through the resistor R11. With the collector of the transistor Q2 serving as the output terminal, a pulse signal is sent from the output terminal (collector) of the transistor Q2, which is turned off at the zero point of the full-wave rectified voltage. The sawtooth wave generation circuit/g has resistors R12, R13 and capacitor C4 inserted in series between constant voltage power supply vCC and ground, and resistor R12 and resistor R13.
The cathode of a diode D3 whose anode is connected to the connection point of is connected to the collector of a common emitter transistor Q3, and the base of this transistor Q3 is connected to the collector of a transistor Q2 of the zero cross detection circuit/7 via a resistor R14. The connection point between the resistors R12 and R113 is set as the output terminal, and when the transistor Q3 is off, the capacitor C4 is charged through the resistors R12 and R13, and the voltage at the output terminal rises. By discharging in the circuit of R13-diode D3-collector-emitter capacitor C4 of transistor Q3, the voltage at the output terminal is rapidly brought to zero, and a sawtooth waveform synchronized with the half-wave of the AC power input to the power supply terminal // is generated. The output V15 is sent out. Comparison circuit/9 connects the amplifier circuit/9 to the inverting input terminal of operational amplifier OF2.
Connect the output terminal of the operational amplifier OPI of S and the output terminal of the sawtooth wave generation circuit/g to the non-inverting input terminal, respectively.
Sawtooth wave generation circuit/g from the output VIO of the amplifier circuit 15
When the output V15 of becomes large, (V15') Vlo
) When the 1Hl level output signal from the operational amplifier OF2 becomes larger than the output V15 of the sawtooth wave generation circuit/g and the output VIO of the amplifier circuit 15 becomes larger (v15<V:L
O) Operational amplifier OP2 or 611 L An output signal of l level is sent out through a resistor R15, respectively. The gate drive circuit 20 is the operational amplifier o'p.
The base of a transistor Q4 with a common emitter is connected to the output terminal of 2 through a resistor R, 15, and this transistor Q4
The collector of the diode D4 is connected to the cathode of the diode D4, and the anode of the diode D4 is connected to the gate of the switching element via the resistor R16.
If the output signal of the IH level is output from 2, and the output of the running water detection circuit 2/ is off, the transistor Q4 is turned on and the switching element ? On the contrary, when an output signal of 1H level is output from the operational amplifier OP2 and the output of the flowing water detection circuit 2/ is always on, the transistor Q4 is turned off and the switching element is turned off. It has become. The running water detection circuit 2/ is built into the running water sensor g and is connected to the inverting input terminal of the operational amplifier CPI whose output terminal is an open collector, and is turned on when the washing water is flowing, and when the water is stopped. The switch ga to be turned off is connected to the connection point of resistors R17 and R18 inserted in series between the constant voltage [EW source Vcc and ground,
The output terminal of the sawtooth wave generating circuit /g is connected to the non-inverting input terminal, and the output terminal of the operational amplifier CP1 is connected to the base of the transistor Q4 of the gate drive circuit 20. When the switch ga is on, zero volts are input to the inverting input terminal of the running water detection circuit 2/ (V
25), and when switch Ja is off, constant voltage power supply Vcc7fr: divided by R17 and R18 and 7'c
? 1i: [E is done manually (v25). Further, the output signal from the sawtooth wave generation circuit/g is input (V2O) to the non-inverting input terminal. The above operational amplifier cP1
The output is an open collector9, and when the switch ga is on, V2O:)>V25, so the output of the open collector of the operational amplifier OPI is always off. Also, when switch ga is off, V2C+(
V 25 (1) At the time (r), the output of the open collector of the operational amplifier OPI is turned on. In this JjA combination, the sawtooth wave V20 from the sawtooth wave generation circuit/g input to the non-inverting input terminal of the J-sampler cP1 is divided by the resistors R1'7 and R18 even if the switch ga is off. When the output voltage is higher than the voltage V25 inputted to the inverting input terminal, the output of the open collector of the operational amplifier CP1 is turned off. Therefore, even if an output signal of "H level" is sent from the operational amplifier OF2, when the output of the open collector of the performance amplifier cP1 is on, the transistor Q
4, and if the output of the open collector of the performance amplifier cP1 is off, the base current of the performance amplifier cP1 is OFF.
When the output signal Gt of lH Lebel is sent from P2,
Pace current flows through transistor Q4 and transistor Q
4 is turned on, and the switching element is turned on.

Note that 1.22 in the figure is the noise f! caused by the opening and closing of switching element 2. : In the noise absorption circuit to prevent it from spreading to the power supply side, a reactor LX is inserted between the heater 2 and the switching element 2, and a capacitor C5 is inserted in parallel in the series circuit between the reactor LX and the switching element 2. It is formed by

Next, the operation of the above configuration will be explained. First, connect the power terminal l/ of the device to an AC power source (not shown). Then, from power supply circuit /3 to each circuit l da, 16°17.7g, 2/V
A constant voltage power supply Vcc for C operation is supplied. Then, when the operation switch l0AC1k'3 (see Fig. 0) is turned on (at time t1 in Fig. 5), the solenoid valve 103 opens and the wash water flows through the water supply pipes IO and 2 into the case co of the heating device lO5. . In this case, since the temperature detected by the temperature/counterfeit sensor S is low, the resistance value is also low, and therefore the power of the amplifier circuit/S is V
s) Since the relationship of Vt is e, the output VIO is;
Sends a level output signal. Also, wash water or water supply pipe/
When water is flowing into the 0-12J spatula case 2,
15. The water sensor G+/- is connected to the internal switch and the water is turned on by flowing water from A to T (see Figure 1/S Figure IP)). The operational amplifier 02109 inverts the input terminal with a zero voltage V25, and the non-inverting input terminal receives the sawtooth wave output from the sawtooth wave generating circuit/g7J. Since the power of both people in CP1ζ2 is in the relationship V2O>V25, the output of the open collector of the calculation increase 1 quotient CPI is off (Takumi
Figure 5 appears. For reference to f above. 11 equipment CP1
Since the open collector υ is turned off (,・, and the 'H'' V bell σ) output signal is sent from the above comparator circuit/9, this (ii'U is the gate drive Since the transistor Q4θ) input and r4 of the transistor Q4θ) and the base of the switching element 7σ) flow through the current, the gate current bC of the switching element 7σ) turns on the heater 2, and the heating device 1031 is supplied with water once. Warm up the water.

Washing water heated by the heater/2 is discharged from the water outlet 2b, and the 3F sensor S (1, 5R) detects this.
Also detected iiu + one resistance rises as the degree increases + I
-,, As a result, the resistance -IIj pressure force (!7j...1 path/g output Vt is also in the upper row and 7.C?)'l:lI
'l' product 1! 4) In the summer when the image input Vs, Vt+7) of circuit /S is vs<'tyt, the output VIO of the circuit 111I+1 circuit/S is zero, so the heater l;1 is in the energized state. Continue the j line. Then, if the input Vt of the mil width circuit 15 is greater than VB < (Vs (vt)), the amplification circuit 15 amplifies the difference in image input (Vt - VS) by a predetermined degree of amplification. Send out the output VIO.Top door 1
Output ■ Comparison of receiving 10 ■ 1st path compares the input voltage + V10 with the other input V15, and the input V15 is greater than Vl, O 1υ] (V15 ≧ VIO θ) relationship between t and ru )
Sends out an output signal of I n l level. This lit,
< , the zero-cross detection circuit /7 that receives the full-wave gK voltage from the diode bridge DBI of the power supply circuit /3 is turned off while the base current of its transistor Q2 is lower than the base-emitter pressure (for example, a-to-V). and send a pulse signal from the collector to 7m', IIJJI y, h°/l
Since it goes out in synchronization with the power supply pressure zero 7 input to the (output of Os S1 pin 117), a sawtooth wave is generated in response to this ■1 path! Well, resistor R14? When the pulse signal is received through the transistor Q3, the transistor Q3 is turned on and the capacitor C
Also, during the period when the pulse signal is stopped, transistors Q and 3 are turned off, and capacitor C4 is connected to a constant voltage power supply.
C (It) is charged through resistors R12 and R13 to generate a sawtooth waveform output signal in synchronization with the zero point of the AC power supply. This sawtooth waveform output signal is generated by the forward voltage drop of diode D4 (for example, 7V) is generated repeatedly at a level higher than the zero level (■15 of the input of Fangs 70P2).Therefore, the output of the comparator circuit is I when the input V1O is zero.
If the signal is at Hl level, the input ■IO is Vs (Vt relationship e), the lower the VIO level is with respect to the input V15, the wider the @a l level output width will be sent out. (output of OP2 in FIG. 5), the conduction angle of the switching element 7 is controlled via the gate drive circuit 20, and the energization of the heater 12 is controlled. (At this time, the output of the open collector of the operational amplifier CP1 is turned off. ).As a result, the cleaning water flowing through the heating device 1O5 is heated, and the temperature of the cleaning water jetted from the nozzle 10i1 is heated to an appropriate temperature. Since the phase is controlled, pressure fluctuations during use are gently suppressed, and flicker is also prevented.

Next, when the operator turns off the operation switch IO B, C
At time t2 in FIG. 23], the solenoid valve /n3 is closed to shut off the cleaning water so that it does not flow into the heating device 103. As a result, the required amount of cleaning water remains in the case 2 during the heated snowmaking process (for example, about 00cc), and this residual water tends to be rapidly heated by the heat generated by the heater 12. However, in the present invention, when the cleaning water is stopped by closing the t jiff valve 103, any switch of the flowing water sensor is immediately turned off by the tap water, and the resistor R1'7 is connected to the inverting input terminal of the operational amplifier OPI. The voltage divided by R18 is input as the reference input signal V25.

Therefore, comparing the power of both operational amplifiers, ap:t,
.

Both input voltages are continuously at V25) V2O, and therefore the open-collect output of operational amplifier CP1 turns on only when its input is at V25) V2O (see the diagram below). Therefore, when the output of the open collector of the operational amplifier CPI is on θ), even if the output of the comparator circuit is 1H level, the output of the comparator circuit is dropped to the ground side via the resistor R15, so the transistor Q4 is In order to turn off the base sheath flow and prevent the gate current of the switching element 7 from flowing, the heater 7 is heated and the temperature of the cleaning water stops rising.Meanwhile, the sawtooth wave is generated. The signal V20 from the circuit /g is connected to the resistor R17,
When the reference input 1 obtained by R18F becomes higher than V25, that is, when the switch ga is in the OFF state, the signal from the sawtooth wave generation circuit/g is Input V20 to operational amplifier cp1
becomes larger than the reference input signal V25 (V2
Only when the input of O exceeds the input of 6V25 expressed on a straight line] the output of the open collector of the operational amplifier CPI is turned off (see Figure 2.S ←), and the output from the comparison circuit 17 is If the output signal is at the "Hl level", this signal becomes the input to the transistor Q4 and causes the Beine current to flow, so that the gate current of the switching element flows, turning on the heater l-, and heating In other words, while the washing water is stopped and the switch Ja in the flowing water sensor g is turned off, the above operation is repeated to control the energization of the heater 12. The temperature of the water in the heating device 103 is maintained at the optimum temperature (approximately 3g0C) at the start of use.

Next, when a power outage occurs, when the toilet is restored, or because the toilet will not be used for a long period of time, connect the e-power terminal to the AC type C.
To explain the case where the power supply terminal l/ is connected to an AC power source when the toilet is used again after being removed from the toilet, in both cases, the heaters 1 and 2 were not energized. The residual water in the heating device IOS varies depending on the season, but it is below the set temperature of the temperature sensor S (approx. However, in this case, the device' is energized, but the solenoid valve 103 is closed and the cleaning water is not flowing into the heating device IOS, so the switch Ja in the flowing water sensor g is turned off. There is. Therefore, the comparator circuit 19 outputs an output signal of +9 lb as the water temperature decreases.
Since the above switch G is in the ON position, the operational amplifier CP
The output of the open collector of l is on (refer to the figure S)
The output of the comparator circuit flows to the ground side via the resistor R15, turns off the transistors Q and 4, and since no gate current flows through the switching element, the heater 12 is not energized. However, even when the washing water is stopped,
Sawtooth wave generation circuit/Zara operational amplifier: Cp'x
When the signal V20 input to the input signal V20 becomes larger than the reference input signal V25 obtained by the resistors R17 and R18, the output of the open collector of the operational amplifier CP1 turns OFF due to the relationship of V2O) V25. e)
)do. When the output of the open collector of the operational amplifier CP1 is turned off, a Beine current flows through the transistor Q4, and as a result, a gate current flows through the switching element, turning on the heater 12 and warming the cleaning water. That is,
While the washing water is stopped, the output signal from the comparator circuit 19 is limited by turning on and off the open collector outputs of the operational amplifiers C and Pl as shown in FIG. 15 as the CPI output, This results in transistor Q
By turning on and off the gate drive circuit 20, the conduction angle of the switching element changes. J streetcar control of the heater 12 (see Fig. 15) is performed. Therefore, when heating the low-temperature residual water that remains in the heating device ratos, the heater itself is Heater to warm up /,,!
By being fully supplied with N, the remaining water is rapidly heated, and as a result, the temperature sensor B installed near the heater 12 reaches a temperature higher than the temperature sensor S. There is no possibility that the energizing circuit of the heater/2 will be cut off regardless of whether the local cleaning device is malfunctioning or not.

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

(1) After a power outage has been restored, or after the power supply has been disconnected from the power supply for a long period of time, and then the equipment is reenergized,
If the temperature of the cleaning water in the heating device has fallen below the set temperature of the temperature sensor, the heater will not flow through the water outlet n path unless the cleaning water is being passed through the heating device. Electricity is controlled so that the washing water is gradually heated (
Because it is made of T6, is it washed? fl When the water temperature is low, the cleaning water is rapidly heated by fully energizing the Giriko heater, and the temperature controller, which is placed closer to the heater than the temperature sensor, uses the heat to heat the water. It is possible to prevent an accident in which the device operates first and shuts off the power to the entire private area cleaning device. Furthermore, when cleaning water is flowing into the heating device row, the heater cannot be energized by the flowing water detection circuit (in other words, the flowing water sensor cannot detect the flow of clean water). By inputting a heavy pressure of zero volts to the running water detection circuit, the heater is fully energized and can supply washing water at an appropriate temperature to the user. In this case, since the cleaning water is being passed through the heating device, the rapid heating of the cleaning water that occurs when the cleaning water is stopped causes the temperature regulator to operate before the temperature sensor, causing the device to malfunction. There is no need to cut off the entire power supply.

(2) In addition, the present invention is configured such that when the tr-washing water is not flowing through the heating device, a water flow sensor detects that the water is stopped and the heater generates heat using a weak current.
14, when the table holder of the present invention is installed, the cleaning water is applied within ρS 5 W. "Dry fire"
(When the air inside the heating device is heated to the humidity set by the temperature sensor, the temperature sensor will prevent the heater from energizing.) It is safe, and under the above conditions, Even if cleaning water is passed through the heating device, the heater itself is hardly heated, so there is no chance that the heater will become unusable due to heat shock caused by the passing of cleaning water. In addition, there are some devices that use a float switch to confirm that water is flowing into the heating device and turn on the power to the heater, but with this configuration, There was a problem that it was not possible to prevent dry heating, and that using a float switch required extra space, making the private area cleaning device larger than necessary. !) eliminates all of these drawbacks as described above, and allows the toilet bowl with the private parts cleaning device 14' to be used safely and reliably at any time, and can be manufactured compactly.

[Brief explanation of the drawing]

Figures 27 and 3 are partially cutaway plan views of the toilet bowl with a private cleaning device, side views, and figure 3 are views of the implementation of the present invention.
A block diagram showing Fll, a circuit diagram embodying the configuration of Fig. 3, S diagram is a time chart diagram of operation, and A-O diagram is a vertical diagram showing a conventional heating device. Figure 7, No. hH plane, is a longitudinal sectional view showing another embodiment of the conventional heating device. Ni・71E Water sensor fa・Switcher・Switching Shiko/2・Heater /4'・Resistance---゛Pressure variable circuit lS・
Amplifier circuit, 1g・Sawtooth wave generation circuit/7・Comparison circuit 2/・Small flow detection circuit iOS・Heating device Patent applicant Totokiki Co., Ltd. Airi A+ Electric Machinery Works Co., Ltd. Figure 5 Figure 6

Claims (1)

[Claims] In the middle of the water supply pipe connecting the water supply source and the cleaning nozzle,
A solenoid valve and a heating device that heats the washing water passing through the pipe are interposed, and the heating device includes a heater that heats the washing water, and a temperature sensor on the water outlet side of the heating device. In the local cleaning device, the cleaning water heated by the heating device is spouted from the nozzle when the N solenoid valve is opened, and the cleaning water is injected into the pipe between the solenoid valve and the heating device. A flowing water sensor is disposed with a built-in switch that turns on when water is supplied to the heating device and turns off when the water is stopped. Connect to power supply via
On the other hand, there is a resistance-voltage conversion circuit that outputs the change in resistance of the temperature sensor as 'ffLrE, and a reference value setting circuit that sends out an output corresponding to the optimum temperature of the cleaning water. an amplifier circuit that sends out a zero output when the output of the conversion circuit is below a reference value, and a sawtooth wave generation circuit that sends out a sawtooth wave output synchronized with the power source.
Period 1H when the output of this circuit is greater than the output of the amplifier circuit @
A comparison circuit that sends out a level output, and a running water detection circuit that turns on and off the output of an open collector according to the on and off operations of a switch in the running water sensor,
A toilet with a private parts cleaning device, characterized in that the output from the comparison circuit is limited by the output from the fM water detection circuit, and the comparison circuit outputs a signal to a switching element that limits energization. .