JPH0257857A - Automatic hot-water feeder for bathtub - Google Patents

Abstract

PURPOSE:To wash out bubbles, dirt, left hairs and the like, and to enable a bathtub to be cleaned, by opening a hot-water feed valve to feed hot water upon draining remaining hot water by opening a drainage plug of the bathtub after a bath, and cleaning the inside of the bathtub. CONSTITUTION:When an in-bathing timer stops after a bath has been finished, a drainage plug 7 is opened, and an in-draining timer starts to maintain the open state of the drainage plug 7 for a predetermined period of time during which hot water in a bathtub 2 is completely discharged. When the stopping of the in-draining timer is ascertained, a hot-water feed valve 5 is then opened to clean the inside of the bathtub 2, and the cleaning state is maintained by an in-cleaning timer for a predetermined period of time. After the lapse of the predetermined period of time, the hot-water feed valve 5 is closed. Since the inside of the bathtub 2 is cleaned in this manner upon discharging hot water in the bathtub 2 after a bath, bubbles, dirt, hairs and the like which remain and stick to the inside of the bathtub 2 after the discharge of hot water can be washed out.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automatic bathtub water heater.

(Prior art) Conventionally, this type of automatic bathtub water heater was
- There is a device disclosed in Publication No. 54550, which first detects the opening/closing of the drain valve of the bathtub after the start of the hot water supply step, and the hot water in the bathtub is completely drained according to the open/closed state of the drain valve. The drain valve is kept open until it drains, and then the drain valve is closed to supply hot water into the bathtub.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional automatic bathtub water heater, hot water is supplied in that state after draining the remaining hot water. There was a problem that hair etc. got mixed into the hot water supply to the bathtub.

(Means for Solving the Problems) In view of the problems of the prior art described above, an automatic bathtub hot water supply device according to claim 1 of the present invention supplies hot water to a bathtub based on the operation of a hot water supply switch that can be operated manually or remotely. The automatic bathtub water heater is equipped with a control unit that starts steps, and the hot water supply step includes opening the drain valve of the bathtub after taking a bath to drain remaining hot water, and then opening the hot water supply valve with the drain valve open. The method further includes a cleaning step of cleaning the inside of the bathtub.

Furthermore, the automatic bathtub water heater according to claim 2 of the present invention is an automatic bathtub water heater that includes a control section that starts the step of supplying hot water to the bathtub based on the operation of a hot water supply switch that can be operated manually or remotely. The hot water supply step includes, before hot water is supplied for bathing, a cleaning step of cleaning the inside of the bathtub by opening the drain plug of the bathtub and opening the hot water supply valve.

Furthermore, the automatic bathtub water heater according to claim 3 of the present invention includes:
An automatic bathtub hot water supply device comprising a control unit that starts a step of supplying hot water to a bathtub based on the operation of a hot water supply switch that can be operated manually or remotely, the hot water supply step including opening a drain plug and a hot water supply valve of the bathtub. The present invention includes a cleaning step for cleaning the bathtub, and furthermore, the position of draining water by the drain valve and the position of hot water supply via the hot water supply valve with respect to the bathtub are set at remote positions from each other.

(Function) In the automatic bathtub water heater according to claim 1 of the present invention, after the hot water in the bathtub is drained after taking a bath, hot water is supplied from the hot water supply valve and the bathtub is automatically cleaned, removing bubbles, dirt, and the like. The hot water supply step ends with hair etc. washed away and the bathtub clean.

In the automatic bathtub hot water supply system according to the second aspect of the present invention, hot water for bathing is supplied after the bathtub is cleaned.

In the automatic bathtub water heater according to claim 3 of the present invention, the drain position and the water supply position are set at remote positions from each other, so that the hot water supplied into the bathtub via the hot water supply valve covers a wide area at the bottom of the bathtub. It travels around, taking with it bubbles, dirt, hair, etc., and is discharged from the drain plug.

(Embodiment) First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a schematic diagram of an automatic bathtub hot water supply system, in which 1 is a control unit consisting of a microcomputer, 2 is a bathtub, 3 is a hot water pipe to the bathtub 2, 4 is a spout, and 5 is installed in a hot water pipe 3. 6 is a flow meter for measuring the flow rate of hot water discharged through the hot water supply valve 5; and 7 is a drain valve such as a solenoid valve provided at the bottom of the bathtub 2. Here, the falling position of the hot water spouted from the spout 4 is set at the rear end of the bathtub 2, and the position of water draining from the drain plug 7 is set at the front end of the bathtub 2.

FIG. 2 shows a block diagram of the input/output system to the control unit 1, and the control unit 1 is equipped with a hot water supply switch 8 that can be operated manually or remotely using a telephone line, etc.
A hot water supply step is started based on the ON operation of the hot water supply switch 8, and the control unit 1 controls the opening and closing of the hot water supply valve 5 and the drain valve 7, and controls the amount of hot water supplied to the bathtub 2 through the flow meter 6.

Next, the hot water supply step by the control unit 1 will be explained based on the flowchart shown in FIG.

First, in step a, it is determined whether the hot water supply switch 8 is ON or OFF, and the hot water supply switch is turned ON manually or by remote control.
If so, the process proceeds to step b, where the drain valve 7 is closed (as described later, the drain valve 7 is always open at the end of the hot water supply step).0 Next, the process proceeds to step C, where the hot water supply valve 5 is opened. Then, hot water is supplied into the bathtub 2. The amount of hot water supplied is measured by the flow meter 6, and the valve is kept open until a predetermined flow rate is obtained in step d. When a predetermined amount of hot water is supplied to the bathtub 2, the hot water supply valve 5 is closed in step C, and at the same time, a buzzer or the like is used to notify the user that the bath is ready for bathing. When the hot water supply valve 5 closes, the bathing timer starts in step f. The operating time of this timer is set, for example, to the time until the hot water supplied to the bathtub 2 cools down to a temperature unsuitable for bathing. When the bathing timer ends in step g, the drain valve is opened in step h, and then the draining timer starts in step i, changing the open state of the drain valve 7 to a predetermined time when the hot water in the bathtub 2 is completely drained. maintain for a period of time. When the end of the drain timer is confirmed in step j,
Next, in step m, the hot water supply valve 5 is opened and the inside of the bathtub 2 is washed, and in step m, the washing state is maintained for a predetermined period of time by a timer during washing. After a predetermined period of time has elapsed, the hot water supply valve 5 is closed in step n, and the hot water supply step is completed.

In the device of this embodiment, the inside of the bathtub 2 is cleaned in steps k and m after the hot water in the bathtub 2 is drained after bathing, so that bubbles, dirt, hair, etc. that remain in the bathtub 2 after draining are cleaned. can be cleaned. Therefore, when hot water is supplied into the bathtub 2 by operating the hot water supply switch 8, the hot water in the bathtub 2 is always kept clean.

In addition, during the above-mentioned cleaning, the hot water discharged from the spout 4 falls to the rear end of the bathtub 2, travels around the entire bottom of the bathtub 2, and is then drained from the front end via the drain plug 7. , cleaning can be carried out effectively.

Furthermore, the introduction of a bath timer ensures that bathing is performed only when the temperature is appropriate, and in the case of hotel-type bathtubs, it is convenient for those who take a bath later because they do not forget to drain the water. Accidents such as a child falling into the bathtub 2, which would occur if the bathtub 2 was left full of hot water, can be prevented.

Next, another example of the hot water supply step of the above embodiment will be explained with reference to FIG.

FIG. 4 is a flowchart corresponding to FIG. 3, in which steps similar to those in FIG. 3 are given the same reference numerals. In the hot water supply step of this example, when the hot water supply switch 8 is turned on, the hot water in the bathtub 2 is first completely drained in steps h, i, and j, and then the inside of the bathtub 2 is cleaned in steps k and m. , the drain valve 7 is closed in step b, and when a predetermined amount of hot water has been supplied into the bathtub 2 in step d, the hot water supply valve 5 is closed in step e.
is closed and all steps are completed.

In this example, since cleaning is performed immediately before hot water is supplied for bathing, it is possible to eliminate stains in the hot water due to dirt and the like adhering to the bathtub 2 after draining.

Next, another example of the hot water supply step will be explained with reference to FIG. In FIG. 5, steps similar to those in the above embodiment are given the same reference numerals.

The hot water supply step of this example is similar to the steps of the above-mentioned other examples, and before hot water is supplied into the bathtub 2 in steps b, d, and e, cleaning is performed in steps 1 and m.
After hot water is supplied in steps d and e, steps f', g, h, i, and j are completed, and the step ends with the hot water in bathtub 2 completely drained, so as described in connection with the first embodiment. In addition, forgetting to drain water can be completely eliminated. still,
In this case, cleaning may be performed intermittently by dividing into several times.

Incidentally, in the above embodiment, step m may be set not by the cleaning timer but by the flow meter 6 such that hot water is supplied at a predetermined flow rate after the hot water supply valve 5 is opened in step m.

(Effects of the Invention) The automatic bathtub hot water supply device according to claim 1 of the present invention includes the step of automatically cleaning the bathtub, so that bubbles and dirt left on the bathtub when hot water is supplied for bathing are removed. It is hygienic as it prevents it from getting dirty with hair, etc. or,
Especially since it is cleaned after draining the hot water in the bathtub,
It has the advantage of eliminating the need to forget to drain the water after bathing.

In addition to the advantage of having a cleaning step, the automatic bathtub water heater according to claim 2 of the present invention performs cleaning before hot water is supplied to the bathtub, so that the inside of the bathtub is reliably clean when hot water is supplied. It has the advantage of being

In the automatic bathtub water heater according to claim 3 of the present invention, in addition to the advantages of having a cleaning step, the cleaning hot water is discharged over a wide area at the bottom of the bathtub, so that cleaning can be carried out effectively. It has the advantage of being able to

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a schematic diagram of an automatic bathtub water heater, Fig. 2 is a block diagram of the control system by the control unit, Fig. 3 is a flowchart of the hot water supply step, and Fig. 4 is a schematic diagram of an automatic bathtub water heater.
The figure is a flowchart of another example of the hot water supply step, and FIG. 5 is a flowchart of still another example of the hot water supply step. 1... Control unit 2... Bathtub 5... Hot water supply valve 7... Drain valve 8... Hot water supply switch Patent applicant Inax Co., Ltd. agent
Patent attorney Yoshi Shimizu Hisyu bathtub drain valve

Claims (3)

[Claims] (1) An automatic bathtub water heater equipped with a control unit that starts a step of supplying hot water to the bathtub based on the operation of a hot water supply switch that can be operated manually or remotely, the step of supplying hot water including the drain plug of the bathtub after bathing. An automatic bathtub hot water supply device characterized in that the automatic bathtub hot water supply device includes a cleaning step of opening the hot water supply valve in an open state of the drain valve and cleaning the inside of the bathtub after opening the hot water supply valve to drain remaining hot water. (2) An automatic bathtub water heater equipped with a control unit that starts a step of supplying hot water to the bathtub based on the operation of a hot water supply switch that can be operated manually or remotely, wherein the hot water supply step includes, before supplying hot water for bathing, An automatic bathtub hot water supply device characterized by comprising a cleaning step of cleaning the inside of the bathtub by opening a drain plug of the bathtub and opening a hot water supply valve. (3) An automatic bathtub water heater equipped with a control unit that starts a step of supplying hot water to the bathtub based on the operation of a hot water supply switch that can be operated manually or remotely, wherein the hot water supply step includes a drain plug and a hot water supply valve of the bathtub. The automatic method includes a cleaning step of cleaning the bathtub by opening the bathtub, and furthermore, the position of draining water by the drain valve and the position of hot water supply via the hot water supply valve with respect to the bathtub are set at remote positions from each other. Bathtub water heater.