JPH11264613A - Electric hot water equipment with storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the capacity of a hot water storing tank being selected by continuous operating time, and to prevent water from being scattered on use, by providing a foam inclusion means for forcibly including foam into water in an electric hot water equipment with storage tank. SOLUTION: A hydrant 13 is opened, water is supplied to a body 1 from a water supply path 2 for flowing into a hot water storing tank 5, heated water in the hot water storing tank 5 is pushed to a hot-water supply path 11, at the same time, the passage of water is detected by a water current switch being provided in a water supply path 3, the signal is read by a controller 12, and the conduction of a motor is started by the controller 12. An air pump 9 being used as a foam inclusion means is driven by the conduction, air that is set to a foam state is included into the heated water in the hot-water supply path 11 from a foam inclusion part 8 being provided the hot-water supply path 11 via an air supply path 10, and the water is discharged to a user from a water discharge part 14 being connected to the hot-water supply path 11 outside the body 1, thus greatly preventing water from being scattered on use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION A hot water supply tank for supplying water, a hot water storage tank having heating means by a heater, a hot water supply path for guiding the water in the hot water storage tank heated by the heating means to a water discharge section, and a hot water supply tank in the hot water storage tank The present invention relates to a hot water storage type electric water heater comprising a temperature adjusting means for detecting the temperature of water and controlling the power supply to a heater to adjust the temperature in the hot water storage tank.

[0002]

2. Description of the Related Art A conventional hot water storage type electric water heater heats water supplied from a water supply passage in a hot water storage tank and regulates the temperature, guides the water to a water discharge section through the hot water supply passage, and supplies the water to a user.

[0003]

In a conventional hot water storage type electric water heater, a hot water storage tank is required in order to secure a water discharge flow rate and a water discharge temperature necessary for obtaining a sufficient feeling of use, and to cope with continuous use for a long time. Capacity needs to be increased. For this reason, the main body becomes large.For example, when installing in a washroom of a public facility such as a frequently used station or office building, if a large hot water storage tank can not secure the installation space, a small one must be installed and the hot water runs out. There is. Further, even if a large hot water storage tank can be installed, the amount of water and electric power used is not energy saving.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain a feeling of use equivalent to that of the conventional one and to select the same continuous use time as compared with the conventional one. To provide a hot-water storage type electric water heater that can significantly reduce the capacity of the hot water storage tank, and therefore is compact, has less restrictions on the installation space, and has a significant water-saving and power-saving effect and an effect of preventing water from scattering during use. Is to do.

[0005]

Means for Solving the Problems and Actions / Effects In order to achieve the above object, water supplied from a water supply channel is heated in a hot water storage tank, temperature is controlled, and the water is supplied to a water discharge section through the hot water supply channel. In a hot-water storage type electric water heater supplied to the user, by providing a bubble mixing means for forcibly mixing bubbles into the water, the same usability as the conventional one can be obtained, and the same continuous feeling as the conventional one can be obtained. The capacity of the hot water storage tank selected according to the usage time can be significantly reduced, and therefore, the size is small, the installation space is less restricted, and the water saving and power saving effects are large, and the scattering of water during use can be prevented.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic structural view of a hot water storage type electric water heater showing one embodiment of the present invention. Water is supplied from the water supply channel 2 to the main body 1 through the water tap 13. The water supply channel 2 is connected to a hot water storage tank 5 having a heater 6 as a heating means via a water flow switch 3 as a water flow detecting means and a constant flow valve 4 as a flow rate limiting means in the main body 1. Hot water storage tank 5
The water heated in the inside is discharged to the outside of the main body 1 by the hot water supply channel 11, and is discharged to the user from the water discharge unit 14 connected to the hot water supply channel 11. Here, a bubble mixing section 8 is provided in the hot water supply path 11, and is connected to an air pump 9 as a bubble mixing means via an air supply path 10. A bimetal thermostat 7 as a temperature adjusting means detects the temperature of water in the hot water storage tank 5 and controls the energization of the heater 6 to adjust the temperature in the hot water storage tank. The controller 12 reads a signal from the water flow switch 3 and controls energization of a motor that drives the air pump 8.

In the present embodiment, the heating means is a heater, but various types of heaters such as a sheathed heater and a ceramic heater are conceivable. Although an air pump is used as the air bubble mixing means, various applications such as a compressor and an air fan can be considered. Although a water flow switch is used as the water flow detecting means, various applications such as a pressure switch can be considered. In addition, although a bimetallic thermostat is used as the temperature adjusting means, there are various methods such as a method using a liquid expansion type thermostat, a method using a thermistor or the like as the temperature detecting means to read the signal of the temperature detecting means by the controller and control the energization of the heater. Applications are possible.

In the above configuration, the operation of this embodiment will be described.

The water tap 13 is opened in advance, and the water supply passage 2
The hot water storage tank 5 and the hot water supply path 11 are filled with water. The bimetal thermostat 7 detects the temperature of the water in the hot water storage tank 5, and if the temperature is on, the power supply to the heater 6 is started.
This energization causes the heater 6 to generate heat and heat the water in the hot water storage tank 5. When the temperature of the water in the hot water storage tank 5 rises to the off-temperature of the bimetal thermostat 7, the power supply to the heater 6 is stopped. Further, when the temperature of the water in the hot water storage tank 5 decreases and reaches the ON temperature of the bimetal thermostat 7, the power supply to the heater 6 is started again. This operation is repeated to adjust the temperature of the water in the hot water storage tank 5.

First, when the user opens the water tap 13, water is supplied to the main body 1 from the water supply channel 2 and flows into the hot water storage tank 5. The heated water in the hot water storage tank 5 is pushed out to the hot water supply path 11. At the same time, the water flow switch 3 provided in the water supply channel 3
Detects water flow, and the controller 12 reads the signal. The controller 12 starts energizing the motor that drives the air pump 9 in conjunction with the flow signal. This energization allows the air pump 9
Is driven and air is mixed into the heated water in the hot water supply path 11 in a bubble state from the air bubble mixing section 8 provided in the hot water supply path 11 via the air supply path 10, and is connected to the hot water supply path 11 outside the main body 1. The discharged water is discharged from the discharged water discharging section 14 to the user. Hot water storage tank 5
When the temperature of the heated water in the inside decreases due to the inflow of water from the water supply channel 2, the temperature is adjusted as described above. In addition, water supply channel 3
The constant flow valve 4 provided in the circumstance prevents the water discharge temperature from dropping due to excessive flow of water. The above operation is continued during use.
Here, the air pump 9 can mix sufficient air even when the pressure in the hot water supply path 11 is high, and can increase the flow rate of water discharged from the water discharge port 14. As a result, the momentum of the water relating to the feeling of use can be further increased, and as a result, a sufficiently satisfactory feeling of use can be obtained even with a smaller flow rate of water than in the past. It can be kept low, leading to power saving. Furthermore, since the amount of water used can be reduced, the capacity of the hot water storage tank can be reduced and the main body can be made compact, so that space can be saved.

Next, when the user finishes use and closes the water tap 13, the water discharge from the water discharge section 14 stops. Since the supply of water that has been continuously supplied to the water supply channel 2 stops, the water flow switch 3
Detects the stoppage of water, and the controller 11 reads the signal. The controller 11 stops energizing the motor that drives the air pump 9 in conjunction with the water stop signal. When the air pump 8 is stopped by the stop of the power supply, the flow of the air mixed in the bubble state into the hot water supply path 11 from the bubble mixing section 8 via the air supply path 10 is stopped. The temperature of the water in the hot water storage tank 5 is adjusted as described above.

In this embodiment, (1) a so-called main stop type in which a water tap is connected to the inlet side of the main body has been described. However, a so-called front stop type in which a hot water tap is connected at the outlet side of the main body. Although the system was provided separately from the main unit,
It is considered that the present embodiment can also be applied to a device integrated with the main body (3) a device in which a water discharge unit is provided with a shower or a bubble mixing unit.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water storage type electric water heater in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Water supply channel 3 ... Water flow switch (flow detection means) 4 ... Constant flow valve (flow restriction means) 5 ... Hot water storage tank 6 ... Heater (heating means) 7 ... Bimetal type thermostat (temperature control means) 8 ... Bubble mixing section 9 ... Air pump (bubble mixing means) 10 ... Air supply path 11 ... Hot water supply path 12 ... Controller 13 ... Water tap 14 ... Water discharge section

Claims (3)

[Claims] A hot water supply tank for supplying water, a hot water storage tank having heating means by a heater, a hot water supply path for guiding water in the hot water storage tank heated by the heating means to a water discharge section, and a water supply in the hot water storage tank. A hot water storage type electric water heater comprising a temperature control means for detecting the temperature and controlling the power supply to the heater to adjust the temperature in the hot water storage tank, characterized in that a bubble mixing means for forcibly mixing bubbles into water is provided. Hot water storage type electric water heater. 2. A hot-water storage type electric appliance according to claim 1, further comprising a water flow detecting means for detecting the flow of water, and a controller for taking in a signal from said water flow detecting means and controlling said air bubble mixing means. Water heater. 3. The hot water storage type electric water heater according to claim 1, further comprising a flow rate limiting means.