JPH0555663B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a private parts cleaning device, particularly to a private parts cleaning device that can be suitably used in a unit bath in a hotel or the like.

(b) Conventional technology Conventionally, as a form of Western-style toilet, it receives hot and cold water from the outside, generates a mixture of hot water and water at an appropriate temperature using a thermostatic mixing valve, and then uses a thermostatic mixing valve to generate mixed hot water and water.
Some toilets are equipped with private parts cleaning devices that can clean private parts by discharging water from a cleaning nozzle provided inside the toilet bowl body.

When generating mixed hot water, this private parts cleaning device does not require the use of an electric heater or electric hot water mixing device that requires a commercial power source (AC100V), and also does not require the use of an electromagnetic on-off valve that performs water discharging or water shutoff operations. Since various sensors and control devices can be powered by dry batteries, electric shock accidents and leakage accidents can be reliably prevented.

However, in the above-mentioned private parts cleaning device, if a failure occurs in the thermostatic mixing valve or the like, there is a risk that the temperature of the mixed hot water may rise to an appropriate temperature or a set temperature. In this case, high temperature is discharged locally, which is dangerous.

Therefore, as described in Japanese Utility Model Application Publication No. 63-136039, in the past, the temperature of the hot water discharged from the nozzle was adjusted midway through the pipe from the hot water supply source through the thermo faucet to the nozzle. Some are equipped with an electromagnetic valve that detects the temperature using a thermistor and shuts off the flow when the detected temperature exceeds a predetermined temperature.

(c) Problems to be Solved by the Invention However, the above-mentioned private parts cleaning device still had the following problems to be solved.

That is, since the thermistor used in the above-mentioned private parts cleaning device is always energized, it consumes a considerable amount of power, which poses a problem in terms of power saving.

In particular, in private parts cleaning devices that use thermostatic mixing valves, electromagnetic on-off valves that discharge and stop water, various sensors, and control devices are powered by dry batteries in order to reliably prevent electric shock and leakage accidents. However, keeping the thermistor constantly energized will significantly shorten the life of the dry cell battery, so to ensure normal operation of the thermistor, it is necessary to replace the dry cell battery frequently. Is required.

An object of the present invention is to provide a private part cleaning device that can solve the above problems.

(d) Means for Solving the Problems The present invention provides a private parts washing device configured to receive hot water and water from the outside, and to discharge and stop the mixed hot water whose temperature is adjusted to an appropriate temperature by the user's operation. A thermostatic mixing valve is installed at the junction of the hot water supply pipe and the water supply pipe, and a water discharging electromagnetic on-off valve is installed in the hot water mixing flow path that supplies mixed hot water from the mixing valve to the cleaning nozzle, and a thermostatic mixing valve is installed at the junction of the hot water supply pipe and the water supply pipe. A high-temperature water discharge detection sensor is installed, which outputs an output when the water discharge temperature is higher than that, closes the water discharge electromagnetic on-off valve via a logic circuit, and stops water discharge. , relating to a private parts cleaning device that can be operated intermittently at regular intervals, and that the power source for the electromagnetic on-off valve for discharging water, the high-temperature water discharge detection sensor, and the control device of the private parts cleaning device is formed from dry batteries. It is.

The present invention is also characterized by a configuration in which a latching solenoid is used as the water discharge electromagnetic on-off valve.

(E) Functions and Effects According to the present invention, a water discharge electromagnetic on-off valve using a latching solenoid is installed in the hot water mixing flow path, and an output is provided when the discharge water temperature is higher than the high temperature limit temperature, and the water discharge is controlled via a logic circuit. The system is equipped with a high-temperature water discharge detection sensor that closes the electromagnetic on-off valve and stops water discharge, so if the temperature of the mixed hot water becomes high due to a failure of a thermostatic mixing valve, etc., the high-temperature water discharge detection sensor will detect the It can quickly detect high temperatures and, based on the detection output, drive the water discharging electromagnetic on-off valve to instantly stop the water discharging operation, reliably preventing hot mixed water from being spewed into private areas. be able to.

In particular, in the present invention, the high-temperature water discharge detection sensor can be operated intermittently only while the cleaning nozzle is operating, so there is no need to keep the sensor in operation all the time, and the power for sensor operation can be saved. It is also possible to save electricity by reducing the amount of electricity.

In addition, even if the electromagnetic on-off valve that performs water discharging and water stop operations, the high temperature water discharge detection sensor, and the control device are driven by dry batteries, it is possible to consume electricity by energizing the high temperature water discharge detection sensor. Since the battery can be used for a long time, the number of replacements can be reduced, and maintenance of the private parts cleaning device can be made easier.

Furthermore, in the present invention, the electromagnetic on-off valve for discharging water is driven by a latching solenoid, and such an electromagnetic on-off valve can move the valve body to the closed position or the open position by applying a pulse voltage once. Since it can be self-maintained, power saving effects can be achieved.

(F) Embodiments The embodiments of the present invention will be described in detail based on the drawings.
FIG. 1 shows the conceptual overall structure of a private part cleaning device A according to the present invention.

As shown in the figure, hot water supply pipe 1 and water supply pipe 2, which have one end connected to a hot water source and a water supply source, respectively, have their other ends merged, and a thermostatic mixing valve that automatically controls the appropriate temperature is installed at the confluence point. There is a T.

In the above configuration, the hot water pipe 1 and the water pipe 2 include
Constant flow valves 3 and 4 are provided respectively.

In addition, the hot water supply pipe 1 branches a waste hot water pipe 6 between a constant flow valve 3 and a thermostatic mixing valve T, and the waste hot water pipe 6 has an electromagnetic opening/closing mechanism for the waste hot water driven by a latching solenoid. Valve V ₁ is installed.

Furthermore, between the constant flow valve 3 and the branch part of the waste hot water pipe 6, the temperature of the hot water flowing in the hot water pipe 1 is detected,
If the hot water supply temperature is lower than the lower limit hot water temperature setting, the waste hot water solenoid on-off valve V ₁ is activated based on the detection output.
A hot water temperature detection sensor _S1 consisting of a thermistor or the like that opens and closes is installed.

Next, to explain the configuration of the downstream side of the thermostatic mixing valve T, the discharge port of the thermostatic mixing valve T is connected to a latching solenoid-driven electromagnetic on-off valve for discharging water, similar to the above-mentioned electromagnetic on-off valve for discarded hot water _V1 . ₂ is connected to a cleaning nozzle N disposed inside the flush toilet B via a mixed hot water flow path M to which a water heater 2 is attached.

In addition, the mixed hot water flow path M is equipped with a high temperature spouting water detection sensor S ₂ consisting of a thermistor or the like that detects the mixed hot water water temperature on the upstream side of the electromagnetic on-off valve _{V 2} . Therefore, as will be described later, it is possible to quickly detect high-temperature water discharge and stop the water discharge electromagnetic on-off valve _V2 based on the detection output.

Next, each component in the above basic configuration will be explained in detail. As shown in FIGS. 2 to 5, each constant flow valve 3, 4 includes a housing 10 inserted into a flow path 9, It consists of a core member 11 mounted within the housing 10 and an O-ring 12 made of an elastic material.

Further, the housing 10 is formed in a cylindrical shape, and has a stepped portion 13 for hanging the core member 11 at the open end on the upstream side when inserted into the hot water supply pipe 1 and the water supply pipe 2, and has a stepped portion 13 for hanging the core member 11 on the downstream side. O at the opening end
It has a stepped portion 14 for hanging a ring.

The core member 11 is formed into a warhead shape and has a flange 16 having a water passage hole 15 at its rear end, and has a protrusion 17 extending in the axial direction on the circumferential surface, and the flange 16 and the housing It is hooked into the housing 10 by the stepped portion 13 for hooking the core member No. 10, and the distal end portion is loosely inserted into the inner periphery of the stepped portion 14 for hooking the O-ring and protrudes from the housing 10.

On the other hand, the O-ring 12 is loosely fitted between the inner circumferential surface of the housing 10 and the outer circumferential surface of the core member 11, and the O-ring hooking stepped portion 14 of the housing 10
It is hung on.

Therefore, the constant flow valves 3 and 4 are inserted into the flow path 9, and the water flowing through the flow path 9 passes through the water passage hole 15 and flows between the core member 11 and the O-ring 12. 〓 Pass through 19 and further step part 14 for O-ring hanging.
and the core member 11 through 20 and flows downstream.

At this time, if the water supply pressure to the flow path 9 is low or in a normal case, the O-ring 12 is not deformed and the O-ring 12 and the core member 11 are not deformed, as shown in FIGS. The gap 19 maintains a predetermined water flow area, but when the water supply pressure increases, the O-ring 12 is pressed against the stepped portion 14 and crushed and deformed due to the pressure, as shown in FIGS. 4 and 5. However, the water flow area 19 between the O-ring 12 and the core member 11 is reduced.

The deformation of the O-ring 12 increases as the water supply pressure increases, and accordingly, the water passage area decreases and the amount of water flow is restricted.

That is, the constant flow valves 3 and 4 always supply a constant amount of water to the downstream side regardless of fluctuations in water supply pressure.

Next, the configurations of the latching solenoid-driven electromagnetic on-off valve V ₁ for discarded hot water and the electromagnetic on-off valve V ₂ for discharging water will be explained.

As shown in FIG. 6, each electromagnetic on-off valve V ₁ , V ₂ is
A solenoid 23 provided with a permanent magnet 22 for latching is disposed on one side of a diaphragm-type valve body 21.

To explain the operation of the electromagnetic on-off valves V ₁ and V ₂ , the solenoid 23 is energized in the forward or reverse direction to open and close the pilot valve body 26 that opens and closes the pilot valve seat 25 provided on the diaphragm 24 . The diaphragm 24 is actuated by the difference in water pressure acting on the front and back surfaces of the permanent magnet 22 to open and close the main valve seat 27.
By holding the pilot valve body 26 in the open or closed state with the magnetic force, the above water pressure difference is maintained,
The open/closed state of the main valve seat 27 can be maintained.

Therefore, in the electromagnetic on-off valves V ₁ and V ₂ using latching solenoids, the solenoid 23 drives only the pilot valve body 26, and when the electromagnetic on-off valves V ₁ and V ₂ are opened and closed, the solenoid 23 drives only the pilot valve body 26. Since only the power needs to be energized, power consumption is extremely low.

Next, the configuration of the thermostatic mixing valve T will be explained.

As shown in FIG. 7, the thermostatic mixing valve T has an inner cylinder 32 in which a mixing chamber 36 is connected to the upper part and a valve body 31 is connected to the lower part.
A wax type thermostat 33 is inserted into the inner cylinder 32, and the upper end of the thermostat 33 is interlocked and connected to the adjustment knob 35 via the screw adjustment mechanism 34. By rotating, the thermostat 33 can be moved up and down, the lower part of the thermostat 33 filled with wax is inserted into the mixing chamber 36 of the inner cylinder 32, and the middle part of the thermostat 33 is connected to the upper end of the inner cylinder 32. It is composed by:

With this configuration, the operation of the thermostat 33 in the middle due to the expansion and contraction of the wax due to the temperature of the mixed hot water in the mixing chamber 36 is transmitted to the valve body 31 connected to the lower end of the inner cylinder 32, and the upper and lower portions of the valve body 31 are By opening and closing the hot water and water valve seats 38 and 39 provided in the mixing chamber 36, the mixing ratio of hot water flowing into the mixing chamber 36 is changed.
The temperature of the mixed hot water discharged from the cleaning nozzle N in the flush toilet B via the mixed hot water flow path M from the mixing chamber 36 is made to match the temperature set by the adjustment knob 35.

In particular, since the thermostat 33 is operated based on the difference between the mixed hot water and the set temperature, a proportional control operation is performed, and there is no need to receive energy such as electric power from outside.

Next, to explain the other configuration of the private area cleaning device A in FIG. A detection sensor 41 and a discharge push button switch 42 for driving the private part cleaning device A to discharge cleaning water from the cleaning nozzle N are attached.

Note that instead of the reflective seating detection sensor 41,
Other non-contact sensors, micro switches,
Seating detection means such as a limit switch or a load cell may also be used.

Next, a control device C for controlling the driving of the private part cleaning device A having the above configuration will be explained with reference to FIG. 8.

As shown in the figure, the control device C includes a comparator 43 that is connected to the hot water temperature detection sensor _S1 and outputs an output when the hot water in the hot water pipe 1 reaches a predetermined temperature.
, a comparator 44 which is connected to the high temperature discharge detection sensor S ₂ and outputs an output when the temperature of the mixed hot water in the mixed hot water flow path M exceeds the high temperature limit temperature, the comparators 44 and 45, the seating detection sensor 41 and the discharge pusher. A logic circuit 45 in which the button switch 42 is connected to the input section, and an output section of the logic circuit 45 and the solenoids 23, 23 of the above-mentioned waste hot water electromagnetic on-off valve V ₁ and water discharging electromagnetic on-off valve V ₂ , respectively. It is composed of intervening drive circuits 46 and 47, a dry battery D as a power source, and a power switch 48.

FIG. 9 shows a timing chart of each drive unit and sensor, where a is the operation time of the seating detection switch 41, b is the operation time of the water discharging push button switch 42, c is the operation time of the discarded hot water operation, d is a time chart showing changes in hot water temperature;
e is the operating time of the cleaning operation, f is the operating time of the hot water temperature detection sensor _S1 , and g is the electromagnetic on-off valve for discarded hot water.
The operation time of _V1 , h is the operation time of the water discharge electromagnetic on-off valve _V2 , and i is the operation time of the high temperature discharge water temperature detection sensor _S2 .

When using the private parts cleaning device A, when the power switch 48 is turned on and a person sits on the toilet seat of the flush toilet B equipped with the private parts cleaning device A, the sitting detection sensor 41 outputs an output, An output is sent to the hot water solenoid on-off valve V ₁ to open the same solenoid on-off valve V ₁ and keep the valve open until the hot water temperature detection sensor S ₁ detects a temperature sufficient to generate mixed hot water at the appropriate temperature. The hot water that has remained in the hot water supply pipe 1 and whose temperature has decreased is discharged.

Thereafter, when the user who has finished using the toilet presses the discharge button switch 42, the discharge electromagnetic on-off valve _V2 opens and the water in the toilet bowl B passes through the thermostatic mixing valve T. Mixed hot water at a temperature set by the user using the adjustment knob 35 is discharged from the cleaning nozzle N to clean the private parts, and when the cleaning is finished,
The solenoid on-off valve _V2 is closed to stop the discharge.

The power required for the above control is supplied from the dry battery D, but the power is required for the two electromagnetic on-off valves V ₁ and V ₂ , the temperature detection sensors S ₁ and S ₂ , the seating detection sensor 41 and the logic circuit. 45, the temperature detection sensors S ₁ and S ₂ and the seating detection sensor 41 consume less power, and the electromagnetic on-off valves V ₁ and V ₂ are driven by latching solenoids, so they only need to be energized when the valves open and close. Since the dry battery D has a long lifespan, it can be used for a long period of time without having to be replaced.

In addition, in this embodiment, the hot water mixing flow path M
Then, an electromagnetic on-off valve V ₂ for discharging water using a latching solenoid outputs an output when the discharging water temperature is higher than the high temperature limit temperature, and closes the electromagnetic on-off valve V ₂ for discharging water via the logic circuit 45 to stop discharging water. Since the high-temperature water discharge detection sensor _S2 is provided, even if the temperature of the mixed hot water becomes high due to a failure of the thermostatic mixing valve T, the high temperature can be quickly detected by the high-temperature discharge water detection sensor _S2 . Based on the detection output, the water spouting electromagnetic on-off valve V ₂ can be driven to instantly stop the water spouting operation, and it is possible to reliably prevent hot mixed water from being spewed to local areas.

Furthermore, in this embodiment, as shown in FIG. 9i, the high-temperature water discharge detection sensor S ₂ is enabled to operate only while the cleaning nozzle N is in operation, so that the high-temperature water discharge detection sensor S ₂ is in the operating state. Since there is no need to maintain the power supply at a constant temperature, the operating power can be reduced as much as possible, and power saving can also be achieved from this point of view.

In particular, as shown in Figure 9i, the high temperature water discharge detection sensor
When S ₂ is operated intermittently at regular intervals, compared to when it is operated continuously,
Furthermore, power saving effects can be promoted.

In addition, an electromagnetic on-off valve that performs water discharging and water shutoff operations is also available.
V ₂ , the high-temperature water discharge detection sensor S ₂ , and the control device C are driven by the dry cell battery D, the consumption due to energization of the high-temperature water discharge detection sensor S ₂ can be reduced as much as possible. D can be used for a long time, and the number of replacements can be reduced.
maintenance can be facilitated.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the conceptual overall configuration of a private parts cleaning device according to the present invention. FIG. 2 is a cross-sectional explanatory diagram of a constant flow valve. FIG. 3 is a sectional view of FIG. 2.
FIG. 4 is a cross-sectional explanatory diagram of a constant flow valve. FIG. 5 is a sectional view of FIG. 4. FIG. 6 is an explanatory longitudinal cross-sectional view of a solenoid valve using a latching solenoid. Figure 7 shows
A cross-sectional explanatory diagram of a thermostatic mixing valve. FIG. 8 is a block diagram showing the configuration of the control device. FIG. 9 is a timing chart showing the operation of the private part cleaning device. In the diagram, A: private cleaning device, B: flush toilet, C:
Control device, D: Dry battery, M: Mixed hot water flow path, S ₁ :
Hot water temperature detection sensor, S ₂ : High temperature water discharge detection sensor,
T: Thermostatic mixing valve, V ₁ :
Solenoid on-off valve for waste hot water, V ₂ : Solenoid on-off valve for discharging water,
1: Hot water pipe, 2: Water supply pipe, 6: Discarded hot water pipe.

Claims (1)

[Scope of Claims] 1. A private parts cleaning device configured to receive hot water and water from the outside, adjust the temperature to an appropriate temperature, and discharge the mixed hot water to the private parts from a cleaning nozzle N and stop the water supply through a user's operation. A thermostatic mixing valve T is provided at the junction of the pipe 1 and the water supply pipe 2, and a water discharge electromagnetic on-off valve V ₂ is installed in the hot water mixing channel M that supplies mixed hot water from the mixing valve T to the cleaning nozzle N. ,
Outputs when the water discharge temperature is higher than the high temperature limit temperature,
A high-temperature water spouting detection sensor S ₂ is provided which closes _the water spouting electromagnetic on-off valve V ₂ via the logic circuit 45 to stop water spouting. It is characterized in that it can be operated intermittently at regular intervals, and that the power source for the water spouting electromagnetic on-off valve _V2 , the high temperature water spouting detection sensor _S2 , and the control device C of the private parts cleaning device is formed from a dry battery D. Local cleaning device. 2. The private part cleaning device according to claim 1, wherein a latching solenoid is used as the water discharge electromagnetic on-off valve _V2 .