JPH0267607A - Reboiler for bath - Google Patents

Abstract

PURPOSE:To safely and efficiently execute reboiling without requiring manual water supply or an additional heating device even in case of using a bath adopting a stock type hot water heater 1 by automatically opening/closing a valve by a control device with a remote controller and a temperature detector to additionally supply water. CONSTITUTION:When a hot water temperature is set up by operating a remote controller 11 and a hot water supply starting switch is depressed, a hot-water/water mixing valve 7 and an electric valve 8 are opened, boiling water in the stock type hot water feeder 1 is mixed with water in a water supply pipe 3 and hot water with a prescribed temperature is fed to the bath tub 9. The completion of hot water supply is detected by a water level detector or the like and the valve 8 is closed by a command outputted from the remote controller 11. When the temperature of the hot water is dropped in accordance with the passage of time and reboiling is required, only the boiling water from the hot water heater 1 is additionally supplied to the bath tub 9 by depressing a reboiling start switch, and the temperature of the hot water reaches the set temperature of a temperature detector 10, the valve 8 is closed. Thereby, reboiling can be safely attained without requiring manual water supply or an additional heating device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bathtub refilling device that supplies hot water from a hot water storage type water heater.

[Prior Art] Conventionally, in bathtubs that are supplied with hot water from a hot water storage type water heater such as a late-night electric water heater, there is a process called tsuidaki, that is, to raise the temperature of hot water in the bathtub to a desired temperature when the temperature of the hot water drops. for,
There is a method of doing it manually, using sashiyu.

This method involves opening the hot water faucet, pouring hot water into the bathtub, stirring it and manually determining the rise in water temperature, and closing the hot water faucet when it reaches the appropriate temperature. If you do this, the amount of hot water in the bathtub will increase. For example, 38°C
Suppose that there is 200L of hot water in the bathtub, and if the temperature of this hot water is not raised to 42°C, and the temperature of the hot water is 80°C, the formula is 200 LX 38" C+X
t, X 80°C=(200+X) t.

According to x42°C, it is necessary to perform a pouring of X=21, that is, 21 L of hot water. This short bath will increase the amount of hot water in the bathtub by about 10%. If the temperature of the bathtub is low, a large amount of bathwater will be required and the hot water will overflow from the bathtub, so it is necessary to maintain the temperature of the bathtub at a high temperature.

In addition to the method using cold water, there is a method in which a heating device is installed separately to reheat the water. Examples of separate heating devices include the one disclosed in Japanese Patent Application Laid-Open No. 62-258955, which features a heat pump water heater, and the one disclosed in Japanese Utility Model Application Laid-open No. 62-156751, which uses a gas instantaneous water heater as the heat source. There are some methods, such as one disclosed in 1996, and one using a small electric heater as the heat source (both not shown), but all of these methods use a circulation pump to circulate hot water between the heating device and the bathtub. I have a method of doing this.

[Problems to be Solved by the Invention] As described above, in the conventional bathtub refilling device as described above, a bathtub that supplies hot water with a hot water storage type water heater is equipped with a separate heating device, or is heated manually. It is necessary to perform hot water, but providing a separate heating device would make the entire device bulky and would be an economic waste1.If hot water is preferred, it is necessary to open and close the hot water faucet and stir the hot water. This requires manual intervention, which is a tedious task when not taking a bath. Also, if the temperature of the bathtub is low, a large amount of bathwater will be required and the hot water will overflow from the bathtub, so it is necessary to keep the temperature of the bathtub at a high temperature. There was a problem in that there was a risk of burns, etc.

This invention was made to solve this problem, and even in bathtubs where hot water is supplied by a hot water storage type water heater, there is no need to pour hot water manually or to install a separate heating device, and the invention is safe and efficient. My goal is to obtain a bathtub refilling device that can refill the bathtub well.

[Means for Solving the Problems] The bathtub refilling device according to the present invention operates a hot water mixing valve, opens an electric valve, and automatically refills the bathtub by operating a remote control equipped with a control device. We decided to automatically stop the hot water by closing an electric valve based on the detection signal from the temperature sensor.

[Function] In this invention, by operating a remote control equipped with a control device, a hot water mixing valve is operated, an electric valve is opened,
The system automatically dispenses hot water and closes the electric valve based on the detection signal from the temperature sensor to automatically stop the hot water supply, so even in bathtubs that are supplied with hot water by a storage type water heater,
This means that hot water can be reheated safely and efficiently without the need for manually pouring hot water or having a separate heating device.

[Example] Fig. 1 is a block diagram showing the configuration of a bathtub refilling device according to the present invention, in which (1) shows a hot water storage type water heater that uses late-night electricity, etc., and (2) shows a hot water storage type water heater (1). (3) is a water supply pipe for supplying water to the hot water storage type water heater (1), (4) is a pressure reducing check valve installed in the middle of the water supply pipe (3), (5) is a heater inserted at the bottom of the water supply pipe (3); ) is the hot water pipe, (6) is the safety valve, (7)
is an electric hot water mixing valve with a water supply pipe (3) and a hot water supply pipe (5) connected, and although not shown, a wax thermometer for controlling the water temperature is placed inside, and the water temperature setting value drives the motor. By doing so, you can change it freely. (8) is a motorized valve, (9) is a bathtub, (10) is a temperature sensor consisting of a thermistor, and (11) is a remote control installed in the bathroom. Valve (8
).

It is connected to a temperature detector (10) and can be remotely controlled. Although not shown, the remote controller (11) is provided with a hot water supply start switch, a reheating start switch, a bathtub hot water temperature setting device, and a hot water temperature display lamp, and has a built-in control device for controlling the entire system.

Next, the operation will be explained. To supply hot water to the bathtub (9), first operate the bathtub hot water temperature setting device of the remote control (11) to set the bathtub water temperature (eg, 42° C.).

Next, when you press the hot water supply start switch, the hot water mixing valve (7) operates, the electric valve (8) opens, and the hot water from the hot water storage type water heater (1) and the water from the water supply pipe (3) are mixed. Remote control (1
The hot water adjusted to the temperature set in step 1) is supplied to the bathtub (9) through the electric valve (8). When the hot water supply to the bathtub (9) is completed, a detector (not shown) such as a water level detector or a flow rate detector detects this and transmits this to the control device built in the remote controller (11). The electric valve (8) is closed in response to a command from >, and the hot water supply operation is completed.

The temperature of the hot water in the bathtub (9) decreases over time, so it is necessary to refill it.

This recharging can be started by pressing the recharging start switch provided on the remote control (11).
The hot water mixing valve (7) operates in response to a command from the water heater (1), setting the maximum temperature (in other words, water from the water supply pipe (3) is cut off, and only hot water from the storage type water heater (1) is allowed to pass through). ), then the electric valve (8) opens and hot water from the hot water storage type water heater (1) is poured into the bathtub (9).
9) The temperature of the water in the chamber rises almost uniformly due to natural convection, the temperature detector (10) detects this, and when the water temperature reaches the preset temperature with the remote control (11), the water temperature increases according to a command from the remote control (11). The electric valve (8) is closed to complete the refueling.

When supplying hot water, the temperature of the hot water may be slightly lower than the set temperature due to heat dissipation between the start and end of hot water supply, so the system is controlled so that it continues to enter reheating mode after hot water supply is complete. You can also do that.

In addition, the remote control (11) can be set so that by pressing the -degree reheating start switch, recharging will be performed automatically when the water temperature in the bathtub (9) drops again after recharging. There are two methods that can be used: , or setting so that recharging will not be performed unless the recharging switch is pressed again.

FIG. 2 is a diagram showing another first embodiment of the present invention, in which the same reference numerals as in FIG. 1 indicate the same or corresponding parts, and (
10a) is a temperature detector using infrared rays. In Fig. 1, the temperature sensor (10) consisting of a thermistor is installed on the outer wall of the bathtub (9), but the configuration is not limited to this. Alternatively, as shown in Figure 2, if a temperature detector (10a) using infrared rays is used, it can be separated from the bathtub (9) and connected to the remote control (11) as shown in the figure. By attaching a temperature sensor (10a) below, some wiring can be omitted.

FIG. 3 is a diagram showing another second embodiment of the present invention.
The same numbers as in the figure indicate the same parts.12) The ejector (
ejector). In the embodiment shown in FIG. 3, an ejector (12) is provided near the outlet of the hot water pipe, and when hot water flows into the bathtub (9),
) is sucked here and mixed with the hot water, further avoiding the risk of the hot hot water coming into direct contact with the human body. In the embodiment shown in Fig. 3, metal fittings are used for mounting.
A temperature detector (10) is installed inside the metal fitting.

FIG. 4 is a diagram showing another third embodiment of the present invention.
The same reference numerals as in Figures and Figure 3 indicate the same or equivalent parts, (1
3) is the case. This example combines the electrical parts necessary for hot water supply and reheating into one, and includes a hot water mixing valve (7
) and the electric valve (8) are arranged in the case (13), the electric valve (8) is connected to the ejector (12), and the high flow rate section of the ejector (12) is connected to the bathtub (9). ) is connected to the return pipe (14), and a temperature sensor (10) is installed in this return pipe (14). The water temperature is detected indirectly. With this configuration, wiring work becomes easy.

In the above embodiment, a combination of a wax thermostat and a motor is used as the hot water/water mixing valve (7), but the invention is not limited to this as long as it is an electric mixing valve.

Further, in the above embodiment, the electric valve (8) is used as the valve for controlling the supply of hot water to the bathtub (9), but a normal electromagnetic valve may be used instead.

Further, in the above embodiment, a late-night electric water heater is used as the hot water storage type water heater, but this may be a hot water storage type water heater that uses another heat source.

[Effects of the Invention] As explained above, the present invention operates a remote control equipped with a control device to operate a hot water mixing valve, open an electric valve, automatically pour hot water, and detect a temperature sensor. As a result, even in bathtubs that are supplied with hot water by a hot water storage type water heater, it is possible to manually dispense hot water or use another heating device. This has the effect of making it possible to carry out tailgating safely and efficiently without the need for equipment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to the present invention;
FIGS. 2 to 4 are views showing other embodiments of the present invention, respectively. (1) is a hot water storage type water heater, (2) is a heater, (3) is a water supply pipe, (4) is a pressure reducing check valve, (5) is a hot water supply pipe, (6) is a safety valve, and (7) is hot water. Mixing valve, (8) is electric valve, (9)
is a bathtub, (10) is a temperature detector consisting of a thermistor, (
10a) is a temperature detector that uses infrared rays, (11) is a remote control installed in the bathroom, and (12) is an ejector.
1 (13) is the case, (14) is the return piping. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A bathtub in which hot water is supplied by a hot water storage type water heater that uses electricity during a predetermined time period, such as late-night electricity, to boil and store hot water, and then supplies hot water in response to a request from a hot water supply load. The reheating device includes a remote controller equipped with a control device that controls the entire system, a temperature detector that detects the temperature of water in the bathtub, and a hot water supply pipe that connects the hot water storage type water heater and the bathtub. A hot water mixing valve for changing the temperature of the hot water to be sent out by changing the mixing ratio of hot water and hot water, and an electric valve installed on the hot water supply piping to open and close the hot water supply piping by an electric signal. By operating the remote control device, the electric valve is opened to automatically brew hot water while adjusting the temperature of the hot water with the hot water mixing valve, and the temperature of the hot water is adjusted according to the detection signal from the temperature sensor. A bathtub flushing device characterized by automatically stopping the pouring of hot water by closing an electric valve.