JPH0369526B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water supply device for supplying cold water or hot water to a bathtub.

[Prior Art] Conventionally, a water supply device as described in Japanese Patent Application Laid-open No. 135912/1983 has been proposed. This water supply device includes upper and lower water level sensors installed near the bottom and at predetermined positions on the top of the bathtub, a water supply valve that enables water to be supplied from the water supply source to the bathtub, and a water supply start signal and a water supply start signal to the water supply valve. and a control device that outputs a stop signal. Here, the control device gives a water supply start signal to the water supply valve under the condition that the lower water level sensor confirms that there is no remaining water in the bathtub, and the water level in the bathtub reaches the appropriate water level based on the detection result of the upper water level sensor. Give a water supply stop signal to the water supply valve under conditions where it is confirmed that the

Therefore, according to the above-mentioned water supply device, water can be supplied to the appropriate water level while confirming that there is no remaining water in the bathtub by remote control without having to visit the bathroom.

In addition, with the above water supply device, when the sewage level sensor confirms that there is residual water in the bathtub, a residual water alarm is output, so you need to go to the bathroom and drain the remaining water before starting water supply. It happens.

In addition, in the case of the above-mentioned water supply device, a timer circuit is provided in the control device for setting a fixed time period from the start of water supply, and when the sewage level sensor does not detect a rise in the water level within the time period set above. , it detects that the drain valve is open because the water level is rising slowly and stops the water supply. In this case,
A drain valve alarm is output, so you have to go to the bathroom and close the drain valve before restarting the water supply.

[Problems to be Solved by the Invention] However, in the conventional water supply device described above, if there is residual water in the bathtub, it is necessary to go to the bathroom to drain the water and close the drain plug. Also, if the drain valve is open, you will need to go to the bathroom to close it.

The present invention can be used even if there is residual water in the bathtub or
The purpose is to supply water to the appropriate water level in the bathtub by remote control without having to visit the bathroom even if the drain valve is open.

[Means for Solving the Problems] The present invention provides a water level sensor installed near the bottom of a bathtub, a water supply drive unit that enables water supply to the bathtub from a water supply source, and a water supply start signal to the water supply drive unit. and a control device that outputs a water supply stop signal, wherein the bathtub is provided with a drain valve that is opened and closed in response to a valve open signal and a valve close signal output by the control device, and the control device , gives a valve open signal to the drain valve under the condition that the water level sensor confirms that there is residual water in the bathtub, and gives a valve close signal to the drain valve under the condition that the water level sensor confirms that there is no residual water in the bathtub. At the same time, a water supply start signal is given to the water supply drive section, and a water supply stop signal is given to the water supply drive section under conditions where it is confirmed that the water level in the bathtub has reached the appropriate water level.

[Operation] According to the present invention, when the water level sensor confirms that there is residual water in the bathtub, the control device opens the drain valve and allows the residual water to be drained without visiting the bathroom.

In addition, when the water level sensor confirms that there is no remaining water in the bathtub, the control device closes the drain valve and sends a water supply start signal to a water supply driver such as a water supply valve interposed in the water supply piping, thereby supplying water. Start.
Therefore, even if the drain valve is open, it is possible to close the drain valve and supply water without having to visit the bathroom.

Further, the control device gives a water supply stop signal to the water supply drive unit to stop the water supply under conditions where it is confirmed that the water level in the bathtub has reached the appropriate water level.

[Example] Fig. 1 is a schematic diagram showing a water supply device according to an embodiment of the present invention, Fig. 2 is a control system diagram of the water supply device, and Fig. 3 is a diagram showing a control system of the water supply device.
The figure is a control flowchart of the water supply device, and FIG. 4 is a schematic diagram showing a drain plug.

In FIG. 1, 11 is a bathtub, 12 is a hot water tank, and 13 is a control device.

Inside the bathtub 11, a lower water level sensor 14 is installed near the bottom, and a higher water level sensor 15 is installed at a predetermined position at the top. The water level sensor 15 may have an adjustable setting position.

The bathtub 11 and the hot water tank 12 are connected by a water supply pipe 16, and a water supply valve (water supply drive unit) 17, which is a solenoid valve, is interposed in the middle of the water supply pipe 16. When the water supply valve 17 is opened, the hot water tank 1
2 supplies hot water to the bathtub 11.

A drain plug 18 is installed at the bottom of the bathtub 11. The drain plug 18 is connected to the bathtub 1 as shown in FIG.
1; a valve body 20 that moves toward and away from the valve seat 19; and a cam 21 that abuts against the lower end surface of the valve body 20 and moves the valve body 20 toward and away from the valve seat 19.
A motor 22 that drives a cam 21 is provided. That is, the drain plug 18 is moved by the cam 2 by the motor 22.
1 is driven, the valve body 20 moves up and down in the range indicated by the lift L, opening and closing between the valve seat 19 and the valve body 20.

An ultrasonic transducer 23 is fixed to the side of the bathtub 11. The ultrasonic vibrator 23 is made of nickel lead zirconate, etc., and is driven by a drive circuit consisting of a Hartley oscillation circuit and a push-pull circuit, and generates ultrasonic vibrations of several 10 KHz to vibrate the structure of the bathtub 11. The remaining water in the tank is then vibrated to clean the bathtub 11.

The control device 13 includes a water supply switch 24, an alarm lamp 25, an alarm buzzer 26, and a full water lamp 27. The control device 13 includes a water supply control device 28 , and sends an ON signal output as a result of each of the sewage level sensor 14 and the upper water level sensor 15 detecting the water level to the water supply control circuit 2 via input circuits 29 and 30.
8, and an on signal output as a result of the water supply switch 24 being pressed with the intention of starting water supply is input to the water supply control circuit 28 via the input circuit 31.

When the water supply control circuit 28 of the control device 13 is given the on signal of the water supply switch 24, it executes the water supply control operation according to the flowchart shown in FIG. Water supply valve 1
7. Driving and controlling the drain plug 18 and the ultrasonic vibrator 23, and outputting the alarm lamp 25 via the alarm output circuit 33;
The alarm buzzer 26 is driven, and the full water lamp 27 is driven via the full water display circuit 34. Note that the water supply control circuit 28 has a built-in timer circuit 35.

That is, the water supply control circuit 28 of the control device 13
After the ON signal of the water supply switch 24 is applied in step, it is determined in step whether the sewage level sensor 14 detects the zero water level in the bathtub 11, that is, whether there is any water remaining in the bathtub 11.

If it is confirmed in step that there is water remaining in the bathtub 11, a water supply start signal is given to the water supply valve 17 in step. This water supply start signal is transmitted over a certain period of time counted by the timer circuit 35, that is, when the bathtub 1
After the water level in No. 1 rises by +3 cm, the water supply stop signal will be activated. Thereafter, in a step, the ultrasonic vibrator 23 is driven, and the bathtub 11 is cleaned with the remaining water. At this time, the water surface of the bathtub 11 is raised by +3 cm at the step, so that scales and the like attached to the inner surface of the bath near the remaining water surface before rising can be effectively cleaned and removed. after that,
In step, a valve opening signal is given to the drain plug 18 to drain the remaining water after cleaning the tank. Thereafter, in a step, the sewage level sensor 14 detects the water level of the bathtub 11 to be zero.

When the sewage level sensor 14 detects zero water level in the bathtub 11 in step 1, that is, confirms that there is no remaining water in the bathtub 11, a water supply start signal is given to the water supply valve 17 in step 1 to remove dirt on the inner surface of the bathtub 11. Supply water for dropping. This water supply may be made from an elongated water supply port along the upper inner peripheral surface of the bathtub 11 to the entire inner surface of the tank, as shown at 36 in FIG. Thereafter, a valve closing signal is given to the drain plug 18 in a step, and water at an appropriate temperature is supplied in a step. Note that if the water supply start signal given to the water supply valve 17 in the step is switched to the water supply stop signal after a short period of time counted by the timer circuit 35 to limit the water supply in the step to a short time, the water supply to the water supply valve 17 is restarted in the step. It is necessary to give a start signal, but if the water supply to the step is at an appropriate temperature, this step can be omitted. The water supply after the initial stage of water supply may be used to supply water at an appropriate temperature for bathing.

Thereafter, in a step, it is detected whether the water level in the bathtub 11 has reached the appropriate water level based on the detection result of the water level sensor 15. This appropriate water level may be the set position of the upper water level sensor 15 itself, or may be determined at an arbitrary position by adding the increase in the water level based on the elapsed time counted by the timer circuit 35 from the time when the upper water level sensor 15 detects the water level. It may be something that is set. When reaching the appropriate water level is detected in step, a water supply stop signal is given to the water supply valve 17 in step, and the full water lamp 27 is turned on in step to indicate the water is full.

When the step detects that the appropriate water level has not been reached, the step makes the following determinations.
In other words, in the case of a step, the timer circuit 3 runs from the time when water supply at the appropriate temperature is started in the step (when the step is omitted as described above, the time when the drain valve 18 is closed in the step) to the present time.
It is determined whether the count time of 5 has passed the standard filling time x that is preset as necessary to fill the bathtub 11 with water. Through this determination, if it is confirmed that the standard water filling time x has elapsed even though the water has not reached full water, it is determined that an abnormality has occurred such as a malfunction in the water supply valve 17 or drain valve 18. In this case, a water supply stop signal is given to the water supply valve 17 in a step, and an alarm lamp 25 is turned on in a step.
lights up and sounds the alarm buzzer 26.

Next, the operation of the above embodiment will be explained.

According to the embodiment described above, when the sewage level sensor 14 confirms that there is residual water in the bathtub 11, the control device 13 opens the drain valve 18 and can drain the residual water without visiting the bathroom. shall be.

Further, when the sewage level sensor 14 confirms that there is no remaining water in the bathtub 11, the control device 13 controls the drain plug 1
8 is closed, and a water supply start signal is given to the water supply valve 17 interposed in the middle of the water supply pipe 16 to start water supply. Therefore, even if the drain plug 18 is opened, it is possible to close the drain plug 18 and supply water without visiting the bathroom.

Further, the control device 13 gives a water supply stop signal to the water supply valve 17 to stop the water supply under conditions where it is confirmed that the water level of the bathtub 11 has reached the appropriate water level based on the detection result of the water level sensor 15.

In addition, the control device 13 controls, in a state where there is residual water,
A certain amount of water is supplied to raise the water level, and the inner surface of the tank is cleaned using ultrasonic waves, so the water scale and the like attached near the water surface are removed and cleaned before being drained.
Further, after draining is completed and before closing the drain plug 18, a certain amount of water is supplied to remove dirt from the inner surface of the tank. Therefore, the bathtub 11 can be cleaned automatically and carefully, and labor for preparing for bathing and cleaning up afterwards can be reduced.

Note that as the water supply source used in implementing the present invention, a hot water storage type water heater such as an electric water heater, a gas water heater, etc. can be used.

Additionally, the appropriate water level in the bathtub may be checked using a timer, water supply meter, or the like.

The present invention is also applicable to telecontrol devices.

[Effects of the Invention] As described above, according to the water supply device for a bathtub according to the present invention, even if there is residual water in the bathtub or even if the drain valve is opened, it can be done remotely without visiting the bathroom. By operation, water can be supplied to the bathtub to the appropriate water level.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a water supply device according to an embodiment of the present invention, FIG. 2 is a control system diagram of the water supply device, and FIG.
The figure is a control flowchart of the water supply device, and FIG. 4 is a schematic diagram showing a drain plug. 11... Bathtub, 12... Hot water tank (water supply source), 13... Control device, 14... Sewage level sensor,
15...Water level sensor, 17...Water supply valve (water supply drive unit), 18...Drain plug, 24...Water supply switch,
28...Water supply control circuit.

Claims (1)

[Claims] 1. A water level sensor installed near the bottom of the bathtub;
In a water supply device for a bathtub, which includes a water supply drive section that enables water supply to the bathtub from a water supply source, and a control device that outputs a water supply start signal and a water supply stop signal to the water supply drive section, the control device outputs The bathtub is provided with a drain valve that is opened and closed by a valve opening signal and a valve closing signal, and the control device gives a valve opening signal to the drain valve under conditions where the water level sensor confirms that there is water remaining in the bathtub; Under conditions where the water level sensor has confirmed that there is no residual water in the bathtub, a valve close signal is given to the drain valve, and a water supply start signal is given to the water supply drive unit, and it is confirmed that the water level in the bathtub has reached the appropriate water level. A water supply device for a bathtub, characterized in that the water supply device gives a water supply stop signal to a water supply drive unit. 2. Under conditions in which the water level sensor confirms that there is no residual water in the bathtub, the control device shall, prior to giving a valve closing signal to the drain valve, give a water supply start signal to the water supply drive unit, and before the drain valve is closed. A water supply device for a bathtub according to claim 1, which supplies water to remove dirt from the inner surface of the bathtub.