JPH0449338A - Warm water closet seat - Google Patents

Abstract

PURPOSE:To eliminate the needs for wiring to connect a bimetal switch with the supply line of commercial power source by a method in which a bymetal switch to interrupt power source when the temperature of warm water reaches a given temperature is connected in series to relay-exciting coil. CONSTITUTION:A warm water-stool seat is connected in series to a warm water heater H operating in connection with power source making, and a bymetal switch SW1 is connected in series to the exciting coil L1 of a relay Ry1, which is connected through transistors to a control circuit 2. When the circuit 2 is operated by supply current from power source, the transistor goes ON to drive the circuit 2. In this case, the relay contact (r1) is closed, current is supplied to the heater H, and when the temperature of warm water reaches set temperature, the switch SW1 goes OFF to interrupt the connection to power source to the relay Ry1. The need for wiring for the switch SW1 and the power source can thus be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a toilet seat that cleans private parts with hot water.

[Prior Art 1] A warm water washing toilet seat is used by being attached to a Western-style toilet bowl, and is used to wash private parts with hot water and dry the private parts with warm air.

By the way, in such a hot water washing toilet seat that cleans private parts with warm water, it is not preferable for the temperature of the hot water to become too high, so the temperature of the hot water is made to not rise above a predetermined temperature.

A circuit configuration for preventing the hot water temperature from rising above a predetermined temperature will be described with reference to FIG. 2.

This hot water flushing toilet seat operates using a commercial power source (AClo (, lV)), and a hot water heater I4, a hot air heater (not shown), a heater for warming the toilet seat in winter, etc. are installed accordingly. It is connected to a commercial power source via a drive circuit 3, and the drive circuit 3 controls the heating state by controlling the amount of electricity supplied to the hot water heater (1, etc.) by, for example, phase control.

The operation of the drive circuit 3 is controlled by a control circuit 2 made up of a CPU, and a control power supply is supplied to the internal circuits by a power supply circuit 1 made up of a step-down transformer T, a diode preamplifier 7) DB, a smoothing capacitor, and a constant voltage circuit 4. Supplied. Further, the hot water heater H and the like are connected to a commercial power source via a relay contact r1 that is closed in conjunction with power-on.

By the way, in this hot water bidet toilet seat, when the hot water temperature reaches a predetermined temperature or higher, the power supply to the hot water heater H is stopped to prevent the hot water temperature from rising. The power supply is stopped by a bimetal switch SW inserted into the power supply line.

[Problem to be solved by the invention] However, as mentioned above, the bimetal switch SW1
When the power supply line is inserted into the power supply line, there is a problem in that the control circuit 2 is likely to malfunction due to noise superimposed on the commercial power supply. In other words, bimetal switch SW,
Since the bimetal switch SW is installed at the location where the hot water temperature is sensed, wiring is required to connect the bimetal switch SW to the power supply line. Therefore, noise tends to enter the control circuit 2, making it more likely to cause malfunctions. In addition, about 6A to 7A for hot water heater H, etc.
Since the current flows, the electric wire for the above wiring needs to be thick, and since the current is large, it is easy to generate heat at the connection part of the bimetal switch SW +, so be careful when connecting it to avoid generating heat. There was also the problem that the wiring work was troublesome and the cost was high.

The present invention has been made in view of the above points, and its purpose is to provide a hot water cleaning method that is less susceptible to noise superimposed on a commercial power source and that facilitates wiring work for bimetal switches. The purpose is to provide toilet seats.

[Means for Solving the Problems 1] In order to achieve the above object, the present invention connects a bimetallic switch in series to the excitation coil of a relay that is driven in conjunction with turning on the power and enables the supply of commercial power to the hot water heater. 9 [Function] By configuring as described above, the present invention provides power supply to the relay that controls the power supply to the hot water heater when the hot water temperature reaches a predetermined temperature or higher. In this way, the bimetal switch is disconnected continuously to stop the supply of commercial power to the hot water heater, thereby eliminating the need to connect the bimetal switch to the commercial power supply line. Wiring between the commercial power supply line and the commercial power supply line is no longer necessary, noise does not enter the control circuit from this wiring, and since large current does not flow through the relay, heat generation at the bimetal switch connection part is reduced. Wiring is less likely to occur and wiring can be done using thin wires with low current capacity, making wiring work easier and reducing costs.

[Example] FIG. 1 shows an example of the present invention. In this embodiment, a bimetal switch SW is connected in series to the excitation coil L of the relay R11+, which is driven in conjunction with power-on and enables supply of commercial power to the hot water heater H.

The relay RV+ has a control power supply (for example, 5V) Vee
The control circuit 2 is connected to the transistor Q1 through the transistor Q1, and is driven by the control circuit 2 turning on the transistor Q when commercial power is supplied and the control circuit 2 starts operating. At this time, the relay contact r1 is closed, so that commercial power can be supplied to the hot water heater H. In addition,
The relay Ry1 also has the function of stopping energization to the hot water heater H in the event of a current leakage.

Now, if the hot water temperature reaches a predetermined temperature or higher, the bimetal switch SW1 turns off, stopping the power supply to the relay RF+ and turning it into a non-driving state. Therefore, the relay contact r opens and the hot water The supply of commercial power to the heater H is stopped.

[Effects of the Invention] As described above, the present invention connects a bimetallic switch in series to the fusion coil of a relay that is driven in conjunction with turning on the power and enables the supply of commercial power to the hot water heater. Therefore, when the hot water temperature reaches a predetermined temperature or higher, it is possible to cut off the power supply to the relay that controls the power supply to the hot water heater and stop the commercial power supply to the hot water heater. Therefore, there is no need to connect the bimetal switch to the commercial power supply line, which eliminates the need for wiring between the bimetal switch and the commercial power supply line, and noise can enter the control circuit from this wiring. This prevents malfunctions caused by noise in the control circuit. Furthermore, since a large current does not flow through the relay, heat generation is unlikely to occur at the connection part of the bimetal switch, and wiring can be done using thin wires with low current capacity, making wiring work easier and reducing costs.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a main part of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a main part of a conventional example. SWl is a bimetal switch, H is a hot water heater, Ry
+ is a relay, and L is an exciting coil. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 SVi' ・Bimetal switch ■ Heater for mixed water (Kuy1 Rele F, Massage film

Claims (1)

[Claims] (1) A hot water bidet toilet seat that is attached to a Western-style toilet bowl and has at least the function of locally washing with warm water, and that uses a bimetallic switch to stop the supply of commercial power to the hot water heater when the temperature of the hot water rises above a predetermined temperature. A hot water bidet toilet seat comprising the above bimetal switch connected in series to the excitation coil of a relay that is driven in conjunction with power-on and enables supply of commercial power to a hot water heater.