JPH0658619A - Full automatic electric water heater - Google Patents

Abstract

PURPOSE:To obtain an electric water heater for supplying hot-water automatically into a bathtub, which pours and/or supplements proper temperature and proper amount of hot-water into a bathtub, heats hot-water in a bathtub additionally and never inject cold air into the bathtub even when an outdoor temperature is low upon bubble bathing so that comfortable bubble bathing can be enjoyed. CONSTITUTION:An electric water heater is provided with an additional circuit, consisting of a temperature keeping heater 20, a pump 18, a temperature detector 21, a water level sensor 22, a two-way valve 19, a flow rate detector 31 a water sending pipe 13 and a water returning pipe 12 which are connected to a bathtub 6 and an air hose 9, communicated with a terminal whereat a solenoid valve for bubble controlling air and the sending pipe 13 are connected to the bathtub 6, in the main body thereof. An air pipeline 30, connected to the solenoid valve 10 for air, is contacted closely with the outer periphery of a hot-water reserving tank 1 to increase the temperature of suction air, which becomes bubbles, and inject it into the bathtub 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic electric water heater for automatically supplying hot water to a bath and generating bubbles in the bath.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional fully automatic electric water heater includes a main body of the electric water heater, a warming heater 20 for heating bath water, a pump 18, a temperature detector 21, a water level sensor 22 and a heater. One-way valve 19, a flow rate detector 31, a reheating circuit consisting of an outflow pipe 13 to the bathtub 6 and a return pipe 12, a mixing valve 17 for mixing hot water and water in the hot water tank 1, and pouring from the mixing valve 17. A pouring circuit connected to the reheating circuit via the on-off valve 23 is configured. Further, an air solenoid valve 10 for controlling bubbles generated in the bathtub 6 and an air hose 9 for connecting the forward pipe 13 to an end connected to the bathtub 6 are provided.

In the conventional fully automatic electric water heater described above, when the bubble operation for generating bubbles in the bathtub 6 is performed, the solenoid valve 10 for air is opened and the forward pipe 1 is opened from the solenoid valve 10 for air.
Air is sucked by the ejector effect due to the flow of hot water from 3 and air is supplied from the air hose 9 to generate bubbles in the bath 6.

[0004]

However, in the above-mentioned conventional configuration, when the bubble operation is performed, the air having substantially the same temperature as the outside air is sent into the bathtub, and particularly the low temperature air is supplied in the winter when the outside air temperature is low. Since it will be sent into the bathtub,
There is a problem that the temperature of the hot water in the bathtub 6 is stopped.

The present invention has been made to solve the above problems, and an object of the present invention is to prevent the temperature of hot water in a bathtub from decreasing by sending low-temperature air into the bathtub even when performing bubble operation.

[0006]

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 vessel, a mixing valve for mixing hot water and water in a hot water storage tank, a pouring circuit connected to the reheating circuit from the mixing valve through a pouring on / off valve, and a bubble communicating with the bath A solenoid valve for controlling air is provided, and an air pipe connected to the solenoid valve for air is in contact with the outer periphery of the hot water storage tank.

[0007]

With the above structure, the present invention does not send low-temperature air into the bathtub even if the bubble operation is performed, and the bath temperature does not stop.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a block diagram of a fully automatic 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 hot water supply port 5 is connected to the mixing valve 17 and the hot water supply pipe 8. Return pipe 12 and forward pipe 1 from connection adapter 11 of bathtub 6
3 is a pipe connection part 14 provided on the main body of the electric water heater, respectively.
And the pipe connection part 15.

The space surrounded by the top plate 26, the side plate 27, and the support base 28 supported by the support fittings 29 fixed to the hot water storage tank 1 is connected to water and hot water, respectively, and the mixing valve 1 is connected.
7, and a reheating circuit connected from the pipe connecting portion 14 to the pump 18, the two-way valve 19, the heat retention heater 20, and the pipe connecting portion 15. The temperature detector 21, the water level sensor 22, and the flow rate detector 31 provided in the reheating circuit are provided,
The outlet of the mixing valve 17 is connected to a reheating circuit downstream of the pump 18 via a pouring opening / closing valve 23 and a check valve 24. Further, a vacuum breaking valve 25 is provided in the pouring circuit to separate the water supply source from the bathtub 6.

At the time of automatic pouring, the two-way valve 19 is closed and the pouring on-off valve 23 is opened with the pump 18 stopped. Mixing valve 17
The mixed hot water adjusted to the proper temperature by the forward pipe 13 of the reheating circuit.
Then, it is poured into the bathtub 6 from the connection adapter 11. 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 connection 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 the hot water is also flown 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. After that, the signal from the water level sensor 22 when the two-way valve 19 is closed and 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.

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

When the hot water temperature in the bathtub 6 drops, the two-way valve 19
And the pump 18 is operated to energize the heat retention heater 20 to circulate and heat the hot water in the bath. The temperature of the bath water from the return pipe 12 is detected by the temperature detector 21, and when the set temperature is reached, the energization of the heat retention heater 20 is stopped, the operation of the pump 18 is stopped, and the reheating is automatically stopped. Reheating is started manually or by pump 1 at regular intervals.
It can be performed when the temperature of the bathtub hot water is detected by the temperature detector 21 by the operation of No. 8 and the temperature falls below the set temperature.

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.

By using a high-output pump, a large amount of bath water is circulated in the reheating circuit, the solenoid valve 10 for air is opened, and the ejecting effect of the connection adapter 11 allows the air hose 9 and the solenoid for air to be ejected. The bubble jet operation can be performed by sucking air from the opening of the air pipe 30 that is in close contact with the outer periphery of the hot water storage tank 1 via the valve 10. When performing this bubble jet operation, the air sent into the bathtub 6 is heated by the heat transfer from the hot water in the hot water tank 1 while passing through the air pipe 30 which is in close contact with the outer periphery of the hot water tank 1. From the solenoid valve for air 10
And since it is jetted from the connection adapter 11 into the bathtub 6 via the air hose 9, the air that you want to keep is not jetted into the bathtub 6 especially when the outside air temperature is low like winter, and you can enjoy a comfortable bubble bath. be able to.

According to the structure of this embodiment, the bathtub 6 can be automatically filled with water at an appropriate temperature and amount, and automatic water replenishment can be performed. The warming heater 20 can automatically reheat the hot water of the bathtub without using the hot water of the hot water storage tank 1, and there is no fear of running out of the hot water of 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, when the outside air temperature is low, the desired air is not ejected into the bathtub 6, and a comfortable bubble bath can be enjoyed.

[0019]

As described in the above embodiments, the fully automatic electric water heater of the present invention is a heater for heating bath water in the main body, a pump, a temperature detector, a water level sensor, a two-way valve, and a flow detector. A reheating circuit consisting of, a mixing valve for mixing hot water and water in a hot water storage tank, a pouring circuit connected to the reheating circuit from the mixing valve via a pouring opening / closing valve, and bubbles generated in the bathtub. Since an electromagnetic solenoid valve for controlling suction is provided and the air pipe connected to the electromagnetic valve for air is brought into contact with the outer periphery of the hot water storage tank, it is possible to automatically fill the bath with water at an appropriate temperature and volume. Yes, automatic water replenishment is possible. The warming heater can automatically reheat the hot water in the bathtub without using the hot water in the hot water storage tank, so there is no need to worry about running out of hot water in the hot water storage tank. Further, when the hot water in the hot water storage tank is sufficient, high temperature hot water can be used. Further, even when the outside air temperature is low, the air that the user wants to keep is not ejected into the bathtub, so that a comfortable bubble bath can be enjoyed.

[Brief description of drawings]

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

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

[Explanation of symbols]

 1 Hot water storage tank 6 Bathtub 10 Solenoid valve for air 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 30 Air piping 31 Flow rate detector

Claims (1)

[Claims] 1. A reheating circuit comprising a warming heater for heating bath water, a pump, a temperature detector, a water level sensor, a two-way valve and a flow rate detector, and hot water and water in a hot water tank in the body of an electric water heater. A mixing valve that mixes with, a pouring circuit that is connected from the mixing valve to the reheating circuit through a pouring opening / closing valve, and an air solenoid valve that communicates with a bath and controls bubbles, The air piping connected to the valve is a fully automatic electric water heater in contact with the outer periphery of the hot water storage tank.