JPH0527565Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sanitary cleaning device that sprays cleaning water heated by an electric heater toward the private parts of the human body to clean the private parts of the human body.

[Prior art] Conventionally, sanitary cleaning equipment that cleans private parts of the human body using cleaning water heated by an electric heater connects the electric heater to a commercial power source and uses a switching element such as a triax to turn on/off the electric heater. The heating of the wash water was controlled by switching the This triax for switching between energization and de-energization of the electric heater required a large heat sink to suppress heat generation when energized.

[Problems to be solved by the invention] By the way, in this type of sanitary cleaning device, the heat sink cannot be made large due to the restriction that the main body of the device is designed to be as compact as possible. Therefore, if the heat sink is designed to be small, the device itself can be made more compact, but if the electric heater is energized for a long time, this heat sink alone will not be able to dissipate enough heat from the triax, and the triax will be heated and There was a risk of destruction. In addition, ventilation inside the sanitary cleaning device was very poor, and the heat sink alone was not able to sufficiently dissipate heat from the triax.

The present invention was developed to address these problems.
Even if the heat sink is made smaller, heat can be sufficiently dissipated from the switching element such as the triax, and the life of the switching element can be extended.

[Means for solving the problems] In order to solve these problems, the present invention equips the hot water tank with an electric heater that heats the cleaning water.
In a sanitary washing device that sprays heated washing water toward a human body's private parts to clean the human body's private parts, a switching element such as a triax for switching energization/de-energization to the electric heater is installed, and a switching element is installed. A heat sink for dissipating heat, a counting means for counting the time of energization to the electric heater, and control so as to reduce the amount of energization to the electric heater by a predetermined percentage when the energization time counted by the counting means reaches a predetermined time or more. and control means.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the present invention, in which 1 is a toilet bowl, 2 is a toilet seat, 3 is a flush water tank, and 4 is a toilet bowl.
1 is a cleaning device, in which cleaning water is sucked from a cleaning water tank 3 through a hose 5 by a pump 6, and is force-fed from the pump 6 through a hose 7 to a hot water tank 8. 9 is an electric heater provided inside the hot water tank 8; 10 is a temperature sensor provided on the side of the hot water tank 8 to detect the temperature of the wash water in the hot water tank 8; 13;
1 is a nozzle that sprays cleansing water toward the private parts of the human body.
Reference numeral 2 denotes a solenoid valve inserted in a hose 11 that communicates the hot water tank 8 and the nozzle 13, and the washing water in the hot water tank 8 heated by the electric heater 9 is passed through the hose 11.
The liquid is ejected from a nozzle 13 via a solenoid valve 12 toward a private part of the human body.

Next, the control system of the embodiment will be explained based on FIG. Reference numeral 26 denotes an electric heater energizing circuit, in which the electric heater 9 is connected in series to a commercial AC power source 27, and a triac 22 or a transistor or the like corresponding to a switching element is inserted in the series circuit. The triac 22 is attached to an aluminum heat sink (not shown), and the heat generated by the triac 22 when the electric heater 9 is energized is absorbed and dissipated by the heat sink. Reference numeral 28 denotes a control means such as a microcomputer, which controls the supply of electricity to the electric heater 9.
Reference numeral 14 denotes a variable resistor for setting the temperature of the cleaning water in the hot water tank 8 to a desired water temperature.The resistance value is varied in conjunction with an operation knob (not shown) provided on the side of the cleaning device 4. The set resistance value is A/
It is held in the water temperature setting section 16 via the D conversion section 15. Further, the hot water sensor 10 is composed of a temperature measuring element such as a thermistor, and the resistance value detected by the temperature sensor 10 is held in the water temperature detecting section 18 via the A/D converting section 17. Reference numeral 19 denotes a water temperature comparison section, which compares the detected water temperature T held in the water temperature detection section 18 from the temperature sensor 10 via the A/D conversion section 17 and the variable resistor 14.
The water temperature comparison unit 1 compares the detected water temperature T with the set water temperature _{T 0} set in the A/D conversion unit 15 and held in the water temperature setting unit 16 via the A/D conversion unit 15.
A signal is output from 9 to AND20. Reference numeral 21 denotes an electric heater energizing section which, when a signal is input from the AND 20, outputs a gate signal to the gate terminal of the triax 22 to turn the electric heater 9 on, and outputs an energizing signal to the counting section 23 corresponding to the counting means. ing. The counting unit 23 adds 1 to the value of the counter C when the energization signal is input from the electric heater energization unit 21, and subtracts 1 from the value of the counter C when the energization signal is not input, and calculates the energization time to the electric heater 8. Detecting the difference in de-energized time. Reference numeral 24 denotes an energization time setting section which stores a count value corresponding to the time during which heat generation is suppressed by the heat sink even if the electric heater 9 is continuously energized. 25 is a time comparison section, which compares the set count value C ₀ stored in the energization time setting section 24 and the count section 23
It compares the count value C of the counter C counted with the count value C of the counter C, and outputs a signal to AND20 when the count value C of the counter C is less than the set count value _C0 . Therefore, AND20 means that the detected water temperature T is the set water temperature.
When the signal output from the water temperature comparator 19 when the water temperature is determined to be less than T ₀ and the signal output from the time comparator 25 when the count value C of the counter C is determined to be less than the set count value C ₀ are input at the same time. A signal is output to the electric heater energizing section 21 only.

Next, the operation of the control means 28 will be explained based on the flowchart shown in FIG.

First, initial settings are made (1), and the state of the operation prohibition flag F is determined (2). If it is determined that the operation prohibition flag F is in the reset state, the set water temperature _T0 and the detected water temperature T are compared3. In that comparison, the detected water temperature T
is less than the set water temperature _T0 , a gate signal is output to the gate terminal of the triax 22 and the electric heater 9
The cleaning water in the hot water tank 8 is heated by supplying electricity to 4. Next, the count value C of the counter C is set to 1.
The count value C of the counter C is compared with the set count value _C0 stored in the energization time setting section 24 (6).

On the other hand, if the operation prohibition flag F is set in the judgment in step 2, or if the detected water temperature T is higher than the set water temperature _T0 in the comparison in step 3, the electric heater 9 is de-energized and the count value C of the counter C is set. 8. Determine whether zero has been reached. In this judgment, if the count value C of the counter C is other than zero, the count value C of the counter C is 1
Subtract 9 and move on to step 6. In the comparison in step 6, if the count value C of the counter C is greater than or equal to the set count value _C0 , the operation prohibition flag F is set to 10, and conversely, if the count value C of the counter C is less than the set count value C0, the flag F is set to ₁₀ . Operation prohibition flag F
11, and jumps to step 2.

In this way, in the counting unit 23, the counter C counts the energization time to the electric heater 9, and when the count value C becomes equal to or higher than the set count value _C0 , the energization of the electric heater 9 is stopped and the try-out 2 is started.
After that, the electric heater 9 is energized/
By repeatedly de-energizing, the amount of current supplied to the electric heater 9 is reduced to 50%. Therefore, even if the power supply to the electric heater 9 is stopped and the heating capacity is reduced, the water temperature in the hot water tank 8 has risen to a certain level, so a particularly large heating capacity is not required, and on the contrary, sudden overheating is prevented. Stable performance can be obtained without causing shoots.

In addition, if the rate of subtraction from the count value C of the counter C is increased when the electric heater 9 is in a non-energized state, the amount of electricity supplied to the electric heater 9 increases, and conversely, when the electric heater 9 is in a energized state, the count value of the counter C is increased. If the ratio added to C is increased, the amount of current applied to the electric heater 9 will be reduced.

[Effect of the invention] The present invention is constructed as described above, and is provided in a sanitary washing device that includes an electric heater that heats washing water in a hot water tank and sprays the heated washing water toward the private parts of the human body to clean the private parts of the human body. , a switching element such as a triax for switching energization/de-energization to the electric heater, a heat sink to which the switching element is attached and radiates heat from the switching element, a counting means for counting the energization time to the electric heater, and the counter. By including a control means that controls the amount of current applied to the electric heater to be reduced by a predetermined percentage when the energization time counted by the means reaches a predetermined time or more, the heat dissipation of the switching element can be reduced even if the heat sink for heat dissipation is made small. can be carried out sufficiently, and the life of the switching element can be extended and the cost of the heat sink can be reduced. In addition, in order to suppress the heat generation of the switching element, if the power supply to the electric heater reaches a predetermined time or longer, the power supply to the electric heater is stopped and the heating capacity is reduced, but even if the heating capacity is reduced, the water temperature in the hot water tank will not change after the predetermined period of heating. Since it is heated to a certain level, a particularly large heating capacity is not required, and stable performance can be obtained without the danger of overshoot due to rapid heating.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a sanitary cleaning device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of a control system in the sanitary cleaning device, and FIG. 3 is a flowchart showing the operation of the sanitary cleaning device. 8 is a hot water tank, 9 is an electric heater, 10 is a temperature sensor, 22 is a triax corresponding to a switching element, 23 is a counting section corresponding to a counting means, and 28 is a control means.

Claims (1)

[Scope of utility model registration request] In a sanitary cleaning device that is equipped with an electric heater that heats cleaning water in a hot water tank and that sprays the heated cleaning water toward the private parts of the human body to clean the private parts of the human body, a tri-attack or the like that switches energization/de-energization to the electric heater is used. a switching element, a heat sink to which the switching element is attached and for dissipating heat from the switching element, a counting means for counting the time during which the electric heater is energized, and when the energizing time counted by the counting means reaches a predetermined time or more, the electric heater is activated. A sanitary cleaning device characterized by comprising: control means for controlling the amount of electricity supplied to the device to be reduced by a predetermined percentage.