JPH0330449Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a washbasin equipped with a hot and cold water mixing faucet and a pop-up valve for storing hot water discharged from the faucet. be.

[Conventional technology]

BACKGROUND OF THE INVENTION Wash basins equipped with hot and cold water mixing faucets and pop-up valves have been widely used. This pop-up valve is used to store water or hot water in the washbasin by opening and closing the drain port. Usually, a pop-up shaft protrudes from the back of the washbasin, and the shaft can be lifted or By pushing the pop-up valve, the pop-up valve is opened and closed.

[Problem that the invention attempts to solve]

If you close the pop-up valve in a conventional washbasin,
There were times when cold water was discharged from the hot and cold mixing faucet and relatively low temperature water accumulated in the washbasin.

In addition, with the above-mentioned conventional washbasins, the pop-up shaft must be manually pushed in or pulled up in order to fill the washbasin, and this operation requires a relatively large amount of force. There were times when it was difficult to operate.

[Means for solving problems]

The washbasin of the present invention is equipped with a hot water mixing faucet and a pop-up valve, and is provided with a drive device for opening and closing the pop-up valve and a switch for operating the same, and a signal from the switch is a signal to close the valve. The pop-up valve is configured to close only when the water temperature in the water discharge passage of the hot water mixing faucet or in the mixed water supply system is equal to or higher than a predetermined temperature.

[Effect]

In the present invention, the pop-up valve does not close unless the hot water discharged from the mixing faucet reaches a predetermined temperature or higher, so water or lukewarm water does not accumulate in the basin, making it possible to use it comfortably.

Further, in the present invention, the pop-up valve is opened and closed by operating a switch, so opening and closing the valve does not require a particularly large force, and even a person with weak strength can easily operate the pop-up valve.

〔Example〕

The present invention will be described in more detail below with reference to embodiments shown in the drawings.

FIG. 1 is a plan view of a wash basin equipped with a faucet device according to an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof.

Reference numeral 10 denotes a washbasin, which is attached to a cabinet 12, and has a faucet fitting 14 fixed to its upper surface. In the present invention, the faucet fitting 14 is a hot/cold water mixing faucet, and a temperature sensor 50 (in this embodiment, a thermistor,
See Figure 4. ) is provided. This faucet 14
is connected to a hot water mixing valve 18 via a mixed water supply pipe 16, and a water supply pipe 20 and a hot water supply pipe 22 are connected to the hot water mixing valve 18. The valve 18 includes a drive motor 18a for adjusting the flow rate and stopping water, and a drive motor 18b for changing the mixing ratio of water and hot water. Reference numeral 24 indicates a spout cap attached to the faucet 14. A switch panel 32 is provided on the top surface of the faucet 14, and there is a water discharge/water stop switch 34 provided on this switch panel 32, and a water discharge/water stop switch 34 that is operated in proximity to this switch 34. A lamp 46 for displaying is provided. Also, a switch 38 for selecting the discharge water temperature and a display lamp 3 for the water temperature.
9. Pop-up switch 44 for opening and closing the pop-up valve 42 of the washbasin to store or drain water
is provided. Further, a lamp 48 is provided adjacent to the switch 44 to indicate that the water storage operation has been performed. Reference numeral 49 indicates a solenoid as an opening/closing drive device for the pop-up valve.
The detection signals of these sensors 50 and the operation signals of the water discharge/water stop switch 34, hot water temperature selection switch 38, and pop-up switch 44 are all sent to the control device 30.
The control device 30 outputs signals to the motors 18a, 18b, lamps 39, 46, 48, and solenoid 49. The hot water temperature selection switch 38 selects low temperature (water only), medium temperature (for example, 40°C),
It is possible to switch between three levels of high temperature (for example, 60° C.), and three water temperature display lamps 39 are also arranged in parallel (39a to 39c to be described later).

In the hot water mixing faucet device configured as described above, when the water discharge/water stop switch 34 is pressed, water is discharged and water is stopped. Also switch 38
The discharge water temperature can be selected by operating the button.

Thus, by operating the switch 44, the pop-up valve 42 can be opened and closed, but when the switch 44 is operated to close, the pop-up valve does not open or close when the temperature control switch 38 has selected water. , When the temperature control switch 38 selects medium temperature or high temperature, and the fluid currently flowing out is at or above the specified medium temperature or high temperature, it is configured to close only when.

FIG. 4 is a circuit diagram showing the circuit configuration of the control device 30. Reference numerals 60, 62, and 64 are NAND circuits with one input terminal connected to the power supply circuit, and the other input terminal has a water discharge/stop switch 34, a pop-up switch 44, and a hot water temperature selection switch 38, respectively. It is connected. These switches are connected between the power supply circuit and ground via resistors _R1 to _R3 , and are connected to NAND circuits 60 to 64 via _R4 to _R9 . Each series connected resistor R ₄ , R ₅ , R ₆ ,
_R7 , _R8 , and _R9 are grounded via capacitors _C1 to _C3 .

Symbols 66, 68, and 70 are these NAND circuits 6
The outputs of flip-flops 0, 62, and 64 are input to the clock CL terminal, and the flip-flops 66 and 68 have terminals D
connected to the terminal. Note that the Q terminal output of the flip-flop 66 is connected to the motor 18a (water discharging motor).
It is input to the drive circuit 67 of.

Reference numerals 72 and 74 indicate flip-flops 66 and 68.
is a transistor whose Q terminal is connected to the base, and a water discharge indicator lamp 46 and a water storage indicator lamp 48
is connected to the collector. Further, 76 is the Q terminal of the flip-flops 66 and 68, which will be described later.
This is an AND circuit connected to the output terminal of the OR circuit 96, and its output is input to the preset PR terminal of the flip-flop 78. The reset R terminal of flip-flop 78 is connected to the terminal of flip-flop 68. Furthermore, the Q terminal of the flip-flop 78 is input to the base of a transistor 82 via an amplifier 80.
A drive solenoid 49 for opening and closing the pop-up valve 42 is connected to the collector of the transistor 82.

Reference numeral 84 denotes an OR circuit, one of whose inputs is connected to the power supply circuit via a resistor R ₁₀ and the other input connected to _{the Q 3 terminal} of the up counter 70 . The capacitor side of resistor _R10 is
A resistor _R11 and a diode D are provided between the ground and the ground. Further, the output terminal of this OR circuit 84 is connected to the reset R terminal of the up counter 70.

Reference numeral 86 is a comparator, and resistor R ₈₈ and
The voltage divided by _R90 is input to the non-inverting input terminal as a comparison reference voltage. In addition, the voltage obtained by dividing the voltage between the resistor R ₉₂ and the thermistor 50 as a temperature sensor is connected to the inverting input terminal of the resistor R _{94 .}
is entered via. Furthermore, the non-inverting input terminal of the comparator is connected to resistor _R108 and transistor 1
06, and the base of the transistor is grounded to the _Q1 terminal of the up counter 70. The output of this comparator 86 is the OR circuit 96
has been entered.

The up counter 70 has four output terminals Q ₀ to _{Q 3} that are selected according to the input pulse from the NAND circuit 64, Q ₀ is an output terminal for selecting medium temperature, and Q ₁ is an output terminal for selecting medium temperature. _Q2 is the output terminal for selecting high temperature and low temperature (tap water). Further, _Q3 is connected to the reset R terminal via the OR circuit 84 as described above, and when _Q3 becomes H, it immediately enters the reset state and _Q0 becomes H state. Accordingly, this flip-flop 70 outputs three types of signals of medium temperature, high temperature, and low temperature to the motor 18b drive circuit 98 according to the operation of the hot water temperature selection switch 38.

The Q ₀ , Q ₁ , and Q ₂ terminals of the up counter 70 are input to the bases of transistors 102 , 104 , and 100 , respectively.
A low temperature indicator lamp 39a, a medium temperature indicator lamp 39b, and a high temperature indicator lamp 39c are connected to the collectors 0, 102, and 104, respectively. Also Q ₂
The terminal is also input to an OR circuit 96.

In this embodiment, each lamp such as the water discharge display lamp 46 uses a light emitting diode.

Next, the operation of this control circuit will be explained with reference to the time chart shown in FIG. Note that the symbols .about. in FIG. 5 indicate the signal levels at the locations shown in FIG. 4, respectively. indicates the signal level of one input terminal of the OR circuit 84, and , , indicates the signal level of one input terminal of the NAND circuits 60, 62, and 64, respectively. Also, ,, indicates the output state of the Q terminal of the flip-flops 66, 68, and 78, and ,, indicates the output state of the up counter 70.
Indicates the signal level of Q ₀ , Q ₁ , and Q ₂ terminals. Furthermore, the output level of the comparator 86 is shown. Note that A to K below indicate the timing in FIG.

First, when you turn on the power switch, A...
When the signal level of , becomes H, the signal level becomes H only during the charging time of capacitor _C4 ,
The flip-flops 66, 68 and the up counter 70 are each reset, and the Q terminals of the flip-flops 66, 68 are set to L.
The _Q0 terminal of the up counter 70 becomes H. Drive circuit 9 of motor 18b that controls the water temperature by this
8, a signal for selecting medium temperature is output. Further, the transistor 102 is turned on, and the medium temperature indicator lamp 39b is turned on.

After that, when the water discharge/water stop switch 34 is pressed once, B becomes grounded and the capacitor
_C1 is discharged, one input terminal of the NAND circuit 60 becomes L for a short time, the NAND circuit 60 emits an H pulse, and the Q terminal of flip-flop 66 becomes H state. This H signal is input to the motor 18a drive circuit to discharge medium-temperature water from the faucet 14, turn on the transistor 72, and light the water discharge display lamp 46.

Next, press the hot water temperature selection switch 38 once,
A positive pulse is output from the NAND circuit 64 to the CL terminal of the up counter 70, and the Q ₁ terminal becomes H, Q ₀
The terminal becomes L, a high temperature selection signal is output to the motor 18b drive circuit 98 for regulating the hot water temperature, and the spouting of high temperature water is started. Further, the transistor 104 is turned on and the high temperature indicator lamp 39c is turned on.

When the switch 38 is pressed once more, the _Q2 terminal of the up counter 70 becomes H, a low temperature water selection signal is output to the drive circuit 98, and the discharging of low temperature water (tap water) is started. Also, transistor 10
0 is turned on and the low temperature indicator lamp 39a is lit.

Next, press the pop-up switch 44 and press E.
One pulse is input from the NAND circuit 62 to the CL terminal of the flip-flop 68, and its Q terminal output becomes H and its terminal output becomes L. This H output from the Q terminal turns on the transistor 74, lights up the water storage indicator lamp 48, and the AND circuit 7
The output of the flip-flop 78 also becomes H and the flip-flop 78 is preset. As a result, the transistor 82
is turned on, the solenoid 49 is energized, and the pop-up valve 42 is closed.

Next, when the pop-up valve 44 is pressed, the Q terminal output of the flip-flop 68 becomes L, and the Q terminal output of the flip-flop 68 becomes L. As a result, the output of the AND circuit 76 becomes L, the Q terminal output of the flip-flop 78 becomes L, the solenoid 49 is demagnetized, and the pop-up valve 42 is opened. In addition, the water storage indicator lamp 4
8 is also turned off.

Next, when the hot water temperature selection switch 38 is pressed, the hot water temperature selection switch 38 is pressed and the up counter 70 changes _Q0 to H, the medium temperature indicator lamp 39b lights up, and the low temperature indicator lamp 39a goes out. Further, the output of the OR circuit 96 also becomes L.

Next, when you press the pop-up switch 44,
The Q output of flip-flop 68 becomes H again,
The water storage indicator lamp 48 lights up, but the OR circuit 96
Since the output of the AND circuit 76 is L, the output of the AND circuit 76 is L, and the pop-up valve 42 does not close. After a while in this state, the temperature of the discharged water will rise, so the output of the comparator 86 will become H.
The OR circuit 96 outputs H, and the AND circuit 76 outputs H. As a result, the Q terminal output of the flip-flop 78 becomes H, the solenoid 49 is energized, and the pop-up valve 42 is closed.

Next, when the pop-up switch 44 is pressed, the K and Q terminal outputs of the flip-flop 68 become L, the pop-up valve 42 is opened by demagnetizing the solenoid 49, and the water storage indicator lamp 48 is turned off by turning off the transistor 74.

In this way, according to the circuit of this embodiment, the pop-up valve closes only when the temperature of the water currently being discharged exceeds the selected medium or high temperature, and hot water at the desired temperature or high temperature water is stored in the basin. It turns out. Also, if you select water, you can immediately fill the basin with water.

In the above embodiment, the pop-up valve 42 can be closed when the specified medium or high temperature is reached; however, if the water temperature is close to the medium or high temperature (for example, the lower limit of the control temperature range). The pop-up valve may be configured to be able to close when the target temperature is reached. Specifically, medium temperature and high temperature are respectively
When set to 40℃ or 60℃, 39℃ or 38℃
The pop-up valve may be configured to close when the water temperature reaches 59°C or 58°C.

[Effect of idea]

As described above, according to the present invention, water, medium-temperature water, and high-temperature water at desired temperatures can be stored in the washbasin. In addition, selection of water storage and drainage in the washbasin can be made by simply operating an electric switch, which is extremely simple and does not require much force and can be easily operated by even the elderly or children. Further, the conventional manually operated pop-up shaft is not required, and the fear of water leakage from the pop-up shaft insertion hole is also eliminated.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the overall configuration of the faucet according to the embodiment, Fig. 2 is a front view thereof, Fig. 3 is a side view thereof, Fig. 4 is a circuit configuration diagram, and Fig. 5 is a time chart. . 10...Wash basin, 14...Water faucet, 18...Hot water mixing valve, 34...Water discharge/water stop switch, 38...
Hot water temperature selection switch, 44...Pop-up switch, 49...Pop-up valve drive solenoid.

Claims (1)

[Scope of Claim for Utility Model Registration] A washbasin to which a hot water mixing faucet is attached and a pop-up valve provided at its drain outlet, a drive device for the pop-up valve, a switch for operating the drive device, and the above. a sensor that detects water temperature in a water discharge passage of a faucet or a mixed water passage connected to the faucet; and a control device for a drive device to which the detected value of the sensor and an operation signal from the switch are input. A functional washbasin, wherein the control device outputs a closing operation signal to the drive device when the water temperature detected by the sensor is equal to or higher than a predetermined temperature and the signal from the switch is a valve closing signal.