JPH06213508A - Electric water heater - Google Patents

Abstract

PURPOSE:To automatically fill hot-water of an adequate temperature into a bathtub by an adequate amount, automatically make up water when the water level drops, always keep hot-water in a bathtub at a constant temperature by a hot-keeping heater, allow selecting addition of high temperature water, and keep water in the bathtub at a constant pH value (weak acid). CONSTITUTION:An additional heating circuit consisting of a hot-keeping heater 20 which heats up water in a bathtub, a pump 18, a temperature detector 21, a water level sensor 22, a two-way valve 19, a flow detector 31 and a pH detector 10, a first hot-water feed circuit which is connected to the additional heating circuit via a mixing valve 17 and a hot-water on-off valve 23, and an electrolyzed water generating circuit consisting of a water supply valve 32 of a water source, an electrolyzed water generating device 33 and a supply valve 34 are provided in a main body of an electric water heater. The electrolyzed water generating circuit is connected to the additional heating circuit to supply electrolyzed water produced in the electrolyzed water generating circuit to the additional heating circuit, so that hot-water having an adequate temperature is automatically filled in the bathtub up to a set water level and the water in the bathtub can be kept at a constant pH value (weak acid).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater capable of automatically supplying hot water to a bathtub and adjusting the PH value of the hot water.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional electric water heater supplies hot water to a bathtub by connecting a water supply port 2 to a hot water storage tank 1 to a water supply source through a pressure reducing valve 3 to provide a heater in the hot water storage tank 1. The hot water heated by 4 is introduced from the hot water outlet 5 to the mixing tap 7, and the water side of the mixing tap 7 is connected to a water supply source and mixed to be supplied to the bath 6.

The water in the hot water storage tank 1 of the electric water heater is boiled by the heater 4. When the bathtub 6 is filled with hot water, the mixing stopper 7 is adjusted to supply hot water of an appropriate temperature. Bath 6
When it is desired to recover from the lowered hot water temperature to the proper temperature after the completion of the hot water filling, the mixing tap 7 is set to a high temperature and the hot water in the hot water storage tank 1 is poured into the hot water bath 6 to raise the hot water temperature in the hot water bath 6. Was raised.

Further, even when the amount of hot water in the bathtub 6 is reduced by taking a bath, hot water is added from the mixing tap 7 to obtain the amount of hot water up to the original water level.

When it is desired to adjust the PH value of the hot water supply to the bathtub 6 or the like, a bath agent or the like has been put in.

[0006]

However, the above-mentioned conventional configuration is inconvenient because it is necessary to manually fill the bathtub 6 with water or adjust the temperature. It has been said that the balance of the body is good when the skin is weakly acidic and the body is weakly alkaline as the effect of adjusting the PH value, and in fact, the astringent water applied to the face in women's cosmetics is acidic. It has been known. However, if it is limited to the skin, it is possible to adjust the PH value by constraining it locally like the face, but it is easy to set the P
There has been no hot water supply device capable of adjusting the PH value of bath water as a means for satisfying the requirement for adjusting the H value. For example, when adjusting the PH value of the bath water, the user himself had to put the electrolytic solution into the bath 6 and adjust it to an appropriate PH value while observing it with a PH meter.

The present invention is to solve the above-mentioned problems. In the hot water filling, the temperature control is automated and the convenience is high.
It is intended to provide an electric water heater whose value can be adjusted.

[0008]

In order to achieve the above-mentioned object, the present invention provides a body of an electric water heater with a heater for heating bath water, a pump, a temperature detector, a water level sensor, a two-way valve, and a flow rate detector. Reheating circuit consisting of a water heater and a PH detector, a mixing valve for mixing hot water and water in a hot water storage tank, and a first pouring tank connected to the reheating circuit from the mixing valve via a pouring opening / closing valve. A circuit, a water supply valve, an electrolyzed water generator that generates electrolyzed water, and an electrolyzed water generation circuit that includes a supply valve that supplies electrolyzed water, and the electrolyzed water generated by the electrolyzed water generation circuit in the reheating circuit. It is configured to be connected so as to be able to supply.

[0009]

With the above-described structure, the present invention enables the hot water in the bathtub to have an appropriate temperature and amount, and it is possible to adjust the PH value of the hot water supplied to the bathtub or the like.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a configuration diagram of an electric water heater according to an embodiment of the present invention. The pipe from the water supply source is connected to the water supply port 2 and the mixing valve 17 via the pressure reducing valve 3, and the piping from the hot water supply port to the mixing valve 17 and the hot water supply pipe 8 is connected. The return pipe 12 and the outgoing pipe 13 from the connection adapter 11 of the bathtub 6 are connected to the pipe connection portion 14 and the pipe connection portion 15, respectively.

In the space surrounded by the top plate 26, the side plate 27, and the support base 28, from the pipe connection portion 14, the PH detector 10, the water level sensor 22, the pump 18, the two-way valve 19, and the flow rate detector 3 are provided.
A reheating circuit in which the temperature sensor 21, the temperature detector 21, and the heat retention heater 20 are connected to the pipe connection portion 15 is provided. Then, the mixing valve 17 is connected to the water side and the hot water side, respectively.
And the pouring opening / closing valve 23 and the check valve 24 from the outlet of the mixing valve 17.
A first pouring circuit is provided which is connected to the reheating circuit via the vacuum breaking valve 25 and the vacuum breaking valve 25.

Further, an electrolyzed water generating circuit comprising a water supply valve 32, an electrolyzed water generator 33 for generating electrolyzed water, and a supply valve 34 for supplying electrolyzed water is provided, and the positive electrode side of the electrolyzed water generator 33 is the above-mentioned. It is connected to the reheating circuit.

At the time of automatic pouring into the bathtub 6, the two-way valve 19 is closed and the pouring opening / closing valve 23 is opened with the pump 18 stopped. The mixed hot water adjusted to an appropriate temperature by the mixing valve 17 is poured into the bath 6 from the connection adapter 11 via the outflow pipe 13 of the reheating circuit. Since the return pipe 12 to which the water level sensor 22 is connected is closed at one end by the two-way valve 19, the water pressure of the bath water from the connection adapter 11 is transmitted and the pressure is detected by the water level sensor 22.

Until the water surface of the bathtub 6 reaches the connecting adapter 11, the pressure of the water level sensor 22 does not change because the return port is open to the atmosphere. The water surface is the connection adapter 11
When it reaches, the return port is filled with hot water, and then the connection adapter 1
A change in the water level from 1 is detected by the water level sensor 22.
After the change in the water level is detected, the two-way valve 19 is opened, and hot water is also supplied to the return pipe 12. After a certain period of time, the pouring on-off valve 23 is closed, the pump 18 is operated, the bath water is circulated in the reheating circuit, and the air remaining in the reheating circuit is discharged. Then the two-way valve 19
Is closed and the signal of the water level sensor 22 when the pump 18 is stopped is used as a reference signal, and the pouring / opening valve 23 is opened again to restart pouring. After that, when the increase of the signal from the reference signal reaches the set water level, the pouring on-off valve 23 is closed and the pouring into the bathtub 6 is automatically stopped.

In order to adjust the PH in the bathtub 6, the two-way flight 19 is opened, the pump 18 is operated, the water supply valve 32 is opened, and the electrolytic water generated on the positive electrode side of the electrolytic water generator 33 is supplied to the water supply valve 34. Is injected into the reheating circuit via the PH detector 1
When 0 detects the set PH, the water supply valve 34 and the water supply valve 32 are closed and the operation of the pump 18 is stopped.

After that, when the water level in the bathtub 6 is lowered, the pouring / opening valve 23 is opened again to pour water into the bathtub 6, and water is automatically replenished to the point where the bathtub water level reaches the set water level.

When the hot water temperature in the bathtub 6 drops, the two-way valve 19
Open the pump 18 and operate the pump 18
Energize to circulate and heat the bath water. The temperature of the bath water from the return pipe 12 is detected by the temperature detector 21, and when the temperature reaches the set temperature, the energization of the warming heater 20 is stopped, the operation of the pump 18 is stopped, and the reheating is automatically stopped. At this time, at the same time, the PH detector 10 detects the PH of the bath circulating water, opens the water supply valve 32, and injects the electrolyzed water generated on the positive electrode side of the electrolyzed water generator 33 into the reheating circuit via the supply valve 34. By always doing so
H can be kept constant.

Further, when the hot water in the hot water storage tank 1 is sufficient, the mixing valve 17 is set to a high temperature and the pouring on / off valve 2
It is also possible to carry out a high-temperature hot-water operation in which the hot water is poured into the bathtub 6 by opening the opening 3.

According to the structure of this embodiment, the bathtub 6 can be automatically filled with water at an appropriate temperature and an appropriate amount of water can be supplied. With the warming heater 20, the hot water in the hot water storage tank 1 is not used and the hot water in the bathtub is automatically reheated without worrying about running out of hot water in the hot water storage tank 1. Further, when the hot water in the hot water storage tank 1 is sufficient, high temperature hot water can be used. Further, the PH detector 10 detects the PH of the bath circulating water, and the electrolyzed water generated by the electrolyzed water generator 33 is injected into the reheating circuit to keep the PH of the bath circulating water constant (weakly acidic). Can soften the bath water and moisturize the skin and hair after bathing.

[0020]

As described above in the embodiments of the present invention, the electric water heater of the present invention includes a heat retaining heater for heating bath water in the main body, a pump, a temperature detector, a water level sensor, and a two-way valve. A reheating circuit composed of a flow rate detector and a PH detector, a mixing valve for mixing hot water and water in a hot water storage tank, and a first refueling circuit connected from the mixing valve to the reheating circuit via a pouring on-off valve. A pouring circuit, a water supply valve, an electrolyzed water generator for generating electrolyzed water, and an electrolyzed water generation circuit including a supply valve for supplying electrolyzed water are provided, and the reheating circuit generates the electrolyzed water by the electrolyzed water generation circuit. Since it is configured to connect so as to supply electrolyzed water, it is possible to automatically pour an appropriate temperature of mixed hot water to the set water level.
Automatic water replenishment is possible when the water level drops. Further, the hot water in the bathtub is always kept constant by the warming heater, and high temperature hot water can be selected when it is desired to raise the hot water temperature rapidly. In addition, the pH of the bath circulating water can always be kept constant (weakly acidic).

[Brief description of drawings]

FIG. 1 is a configuration diagram using an electric water heater according to an embodiment of the present invention.

[Figure 2] Configuration diagram using a conventional electric water heater

[Explanation of symbols]

 1 Hot water storage tank 6 Bathtub 10 PH detector 17 Mixing valve 18 Pump 19 Two-way valve 20 Heat insulation heater 21 Temperature detector 22 Water level sensor 23 Pouring water opening / closing valve 31 Flow rate detector 32 Water supply valve 33 Electrolyzed water generator 34 Supply valve

Claims (1)

[Claims] 1. A body of an electric water heater comprises a warming heater for heating bath water, a pump, a temperature detector, a water level sensor, a two-way valve, a flow rate detector, and a pH (hereinafter abbreviated as PH) detector. A reheating circuit, a mixing valve for mixing hot water and water in a hot water storage tank, a first pouring circuit connected to the reheating circuit from the mixing valve through a pouring opening / closing valve, a water supply valve and electrolytic water Is provided with an electrolyzed water generator that generates electrolyzed water and an electrolyzed water generation circuit including a supply valve that supplies electrolyzed water, and is connected to the reheating circuit so that the electrolyzed water generated by the electrolyzed water generation circuit can be supplied. Electric water heater.