JPS5829427A - Temperature control apparatus of warmed toilet seat - 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 temperature control device for a heated toilet seat.
The purpose is to save energy.

FIG. 1 shows a circuit diagram of a conventional heated toilet seat temperature control device, in which 1 is an AC power supply, 2 is a heater that heats the toilet seat, 3 is a semiconductor control element that controls energization of the heater 2, and 4 is a circuit diagram of a conventional temperature control device for a heated toilet seat. This sensor 4 is a sensor that detects the temperature of the toilet seat.
A negative characteristic temperature-sensitive resistance element is used. 6 is a variable resistor that sets the control temperature of the toilet seat. 6 is resistance, 7,8
, 9°1o are diodes, which perform full-wave rectification of the voltage of the AC power supply 1. 11 is a zener diode,
This is to clip the full-wave rectified voltage. 12,1
3 is a resistor, 14 is a transistor, 16 is a capacitor, 1
6 is a resistor, 17 is a unijunction transistor, 1
8 is a pulse transformer, 19 is a diode, and charges the capacitor 15 with a current corresponding to the voltage across the sensor 4 and the variable resistor 6, and the voltage of this capacitor 16 is the breakover voltage of the unijunction transistor 17. When the voltage is reached, a voltage is applied to the coil of the pulse transformer 18, the semiconductor control element 3 is turned on, and the heater 2 is energized.

A diode 20 absorbs the back electromotive voltage of the pulse transformer 18.

In the circuit configuration shown in FIG. 1, when the temperature of the toilet seat is lower than the set temperature, the resistance value of the sensor 4 is large and the voltage across it is also large. In this case, the capacitor 16 is rapidly charged, the trigger phase of the semiconductor control element advances, the amount of current supplied to the heater 2 is increased, and the toilet seat temperature is raised to the set temperature. Furthermore, when the temperature of the toilet seat is higher than the set temperature, the operation is reversed and the heater 2
Reduces the amount of electricity supplied to lower the toilet seat temperature to the set temperature. In this way, the toilet seat temperature is maintained at the set temperature.

FIG. 2 shows a toilet seat temperature characteristic diagram in the conventional example, in which the horizontal axis shows the elapsed time t, and the vertical axis shows the toilet seat temperature T. Note that Tsl is the set temperature, and A1
and A2 indicates the period of use of the toilet seat. As shown in Figure 2, the toilet seat temperature is always set at T from the moment the AC power is turned on.
It is kept at s1.

However, in the above conventional configuration, the usage time of the toilet seat is A1. Although it is limited as shown in A2, the heater 2 is always energized to keep the toilet seat temperature at the set temperature, resulting in wasted electricity. In order to eliminate this wasteful use of electricity, it has been common practice to plug the power plug of the toilet seat into the outlet only when the toilet seat is in use. Or, people may forget to unplug the power plug from the outlet after using the toilet seat, which is very inconvenient in terms of usability. The local area was cold and felt uncomfortable.

The present invention solves the above-mentioned conventional drawbacks by providing an automatic toilet seat use detection switch that detects the use of the toilet seat, and by changing the amount of electricity supplied to the heater in conjunction with the operation of this automatic toilet seat use detection switch. This is what I did.

Hereinafter, the present invention will be explained based on drawings showing embodiments thereof. FIG. 3 shows the state in which the toilet seat is used in the heated toilet seat temperature control device showing one embodiment of the present invention.
is a human body, 22 is a toilet bowl, 23 is a toilet seat lid, 24 is a toilet seat, 25
is a power plug, 26 is an outlet, and 27 is a toilet seat use automatic detection switch. A heater and an energizing circuit for energizing the heater are built into the toilet seat 24. Further, the automatic toilet seat use detection switch 27 is constituted by a microswitch that is turned on by the weight of the human body 21 when the human body 21 sits on the toilet seat 24, for example.

FIG. 4 shows a circuit diagram of a heated toilet seat temperature control device according to an embodiment of the present invention. The difference from the conventional example shown in FIG. 1 is that an automatic toilet seat use detection switch 27 and a resistor 28 are added. This is the point. In FIG. 4, the toilet seat is not in use, so the normally closed contact of the automatic toilet seat use detection switch 27 is closed, and as a result, the controlled temperature of the heater 2 is independent of the value of the variable resistor 6. The temperature is controlled to be determined by the resistor 28. If the set temperature determined by the variable resistor 5 is Tsl, and the temperature determined by the resistor 28 is TD, then TD is much lower than the set temperature Ts1, and when your private parts touch the toilet seat, you will feel a cold discomfort. The temperature is set to a certain degree, for example, 20°C. When the user sits on the toilet seat to use the toilet seat, the normally open contact of the automatic toilet seat use detection switch 27 is closed, so that the toilet seat temperature is raised to the set temperature Ts1 determined by the variable resistor 6, and temperature control is performed. be.

Fig. 6 shows the toilet seat temperature characteristic diagram in the above two embodiments, and as is clear from Fig. 6, the use period A
4. The toilet seat temperature is controlled to a fixed low temperature TD except for A2, and on the other hand, it is automatically raised to the set temperature Ts1 during the use period A1°A2.

With the above configuration, when the toilet seat is not in use, the amount of electricity supplied to the heater 2 is reduced, which saves energy.Also, when the toilet seat is in use, there is no discomfort of cold in the private parts, and the temperature is automatically raised to the set temperature, making it comfortable. It can be used in many ways.

FIG. 6 shows a circuit diagram of another embodiment of the temperature control device for the heated toilet seat of this R-series, which is a conventional one. The difference from the example shown in FIG. 1 is that a parallel circuit consisting of an automatic toilet seat occupancy detection switch 27 and a resistor 29 is inserted between the sensor 4 and the variable resistor 6'. In FIG. 6, the toilet seat is not in use, so the automatic toilet seat use detection switch 27 is closed, and the temperature is controlled to be determined by the variable resistor 6' regardless of the value of the resistor 29. Further, the value of the variable resistor 6' used in FIG. 6 is a value smaller than that of the variable resistor 5 in FIG. 1. Therefore, even at the same temperature setting position, for example, ΔT
Control only at lower temperatures. When sitting on the toilet seat to use the toilet seat, the automatic toilet seat use detection switch 27 is opened;
In addition, since a voltage drop occurs across the resistor 29, the heater 2
The amount of energization increases, and the toilet seat temperature is raised to the set temperature Ts1 determined by the variable resistor 6' and the resistor 29, thereby performing temperature control. When the toilet seat use automatic detection switch 27 is opened, the resistor 29 having a fixed resistance value is inserted, so that when the toilet seat is not in use, the temperature is always controlled to be lower than the set temperature by the above ΔT, and the toilet seat The control temperature when not in use is also linked to the temperature setting by the variable resistor 5'.

FIG. 7 shows a toilet seat temperature characteristic diagram in the embodiment shown in FIG. 6. As is clear from FIG. The temperature is controlled by ΔT lower than the set temperature Ts1, and the set temperature Ts is automatically controlled during the usage period A1.
It will be raised to 1.

Time t again. When the set temperature is changed to Ts2, the temperature is controlled at a temperature 4 degrees lower than the set temperature Ts2 except for the 5 use period A2, and is automatically raised to the set temperature "S2" during the use period A2.

In the above configuration, when the temperature is controlled by reducing the amount of electricity supplied to the heater 2 when the toilet seat is not in use, the temperature also changes depending on the value of the variable resistor and the personal preference of the user. It has the feature that it can automatically adjust the temperature that makes the local area feel lukewarm to the individual's preference.

Note that the resistor 28 in FIG. 4 and the resistor 29 in FIG. 6 may be variable resistors, so that the degree of energy saving can be varied. Further, in the above embodiments, automatic temperature control using a closed loop using a sensor has been described, but the present invention is also effective in temperature control using open loop control without using a sensor.

As is clear from the above description, the heated toilet seat temperature control device of the present invention is configured to change the amount of electricity supplied to the heater that heats the toilet seat when the toilet seat use automatic detection switch is activated. The amount of electricity applied to the heater automatically decreases, thus saving energy, and the amount of electricity applied to the heater automatically increases when the toilet seat is used, making it easy to use and comfortable to use.Moreover, when using the toilet seat, It has various excellent features such as no discomfort caused by a cold toilet seat.

[Brief Description of the Drawings] Fig. 1 is a circuit diagram of a conventional heated toilet seat temperature control device, Fig. 2 is a toilet seat temperature characteristic diagram in the above conventional example, and Fig. 3 is a heated toilet seat showing an embodiment of the present invention. FIG. 4 is a circuit diagram of the temperature control device, FIG. 6 is a temperature characteristic diagram of the toilet seat in the same temperature control device, and FIG. FIG. 7 is a circuit diagram of a heated toilet seat temperature control device showing an embodiment, and FIG. 7 is a toilet seat temperature characteristic diagram in the embodiment of FIG. 2...Heater, 3...Semiconductor control element, 4...Sensor, 6, 5'...Variable resistor, 24...Toilet seat , 27...Toilet seat use automatic detection switch, 28.29...Resistance. Name of agent: Patent attorney Toshio Nakao and 1 other person
1ffi 2 / a 2 causet□ 13 country HA4f! ! , Figure 5, Figure 16, Figure 17, the best in the country.

Claims (1)

[Claims] It consists of a toilet seat, a heater that heats the toilet seat, an automatic toilet seat use detection switch that detects the use of the toilet seat, and a heater energizing circuit that changes the amount of electricity supplied to the heater when the automatic toilet seat use detection switch is activated. Temperature control device for heated toilet seats.