JPH03191256A - Electric water heater - Google Patents

Abstract

PURPOSE:To provide an electric water heater for finely setting up hot water volume in several ways and for preventing hot water from being used up at the bath time, even when a large quantity of hot water is used in the daytime, by making it possible to switch hot water temperature and volume at the time, when the hot water in a tank heats up, by a hot water temperature detector attached to the hot water tank, a controlling arrangement and a changing switch. CONSTITUTION:A hot water reservoir tank 1 and 2 are placed in an armor 15. A hot water supply port 5 of the hot water reservoir tank 1 having a water supply connecting part 3 connected to a water service pipe and a water supply port 4 of the hot water reservoir tank 2 having a hot water supply connecting part 6 connected to hot water supply devices are connected through a connecting pipe 9. The hot water reservoir tank 1 is provided with a heater 7 for midnight electric power, a heater 10 for daytime electric power and a hot water temperature detector 11. On the other hand, the hot water reservoir tank 2 is provided with a heater 8 for the midnight electric power and a hot water temperature detector 12. The hot water temperature detector 11 and 12 is connected to a controlling arrangement 13 placed into the armor 15 and having a changing switch 14. The constitution above mentioned makes it possible to finely set up hot water volume in several ways. Therefore, it makes possible to perform the heating up suited to hot water volume used, thereby saving energy, and moreover, it makes possible to prevent the hot water from being used up at the bath time even in the case where a large quantity of the hot water is used in the daytime.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water storage type electric water heater having a hot water storage tank.

Conventional technology Conventionally, this type of electric water heater
There is a configuration as shown in the publication. The configuration will be explained below with reference to FIG. 2.

As shown in the figure, there is a water supply port 3 at the bottom of the hot water storage tanks 1 and 2.
, 4 are provided, and a hot water supply port 6 is provided at the top of the hot water storage tanks 1 and 2.
, 6 are provided. In the lower tanks of the hot water storage tanks 1 and 2, heaters 7 and 8 that utilize late-night electricity are provided. The hot water supply port 6 of the hot water storage tank 1 is connected to the water supply port 4 of the hot water storage tank 2 via a connecting pipe 9, and the hot water storage tanks 1.2 are connected in series via the connecting pipe 9.

In the above configuration, the heater 8 is used during the summer when there is less oil for hot water, and hot water at about 85° C. is stored in the hot water storage tank 2. Also, in the winter when hot water usage is high, the heater 7.
8 is used in combination, hot water of approximately 86°C is stored in each of the hot water storage tanks 1°2.

Problems to be Solved by the Invention In such a conventional electric water heater, it is necessary to choose whether to use only the heater 8 or to use the heater 7.8 together. There were only two options for the amount of hot water: hot water or hot water at approximately 86°C, which was equivalent to the capacity of two 7.8 hot water storage tanks. In addition, since heaters 7 and 8 are both heaters that use late-night electricity,
There was also a concern that if a large amount of hot water was used during the day, the hot water would run out when taking a bath at night.

The present invention solves the above-mentioned problems and provides an electric water heater that can set the amount of hot water in many ways and that does not require you to worry about running out of hot water when taking a bath even if you use a large amount of hot water during the day.

Means for Solving the Problems In order to achieve the above problems, there is provided at least two hot water storage tanks, one of which has a water supply connection from the water supply tank, and a hot water supply connection to a hot water supply point. The hot water storage tank, which has a water supply connection from the water supply, is equipped with a heater for late-night power and a heater for daytime power, and has a hot water connection to the hot water supply point. The hot water storage tank is equipped with a heater for late-night electricity, and the boiling water temperature and amount of boiling water in the hot water storage tank can be switched using a hot water temperature detector, controller, and changeover switch installed in each hot water storage tank. It is.

Function: With the above configuration, it is possible to set the amount of hot water in many ways, so it is possible to boil water according to the amount of water used, which saves energy, and also eliminates the need to worry about running out of hot water when taking a bath, even if a large amount of hot water is used during the day. be.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG. As shown in the figure, hot water storage tank 1 and hot water storage tank 2 are arranged in the same external device 6. A hot water supply port 5 of a hot water storage tank 1 having a water supply connection portion 3 from the water supply, and a water supply port 4 of a hot water storage tank 2 having a hot water supply connection portion 6 to a hot water supply point.
and is connected by a connecting pipe 9. The hot water storage tank 1 includes a heater 7 for late-night electricity and a heater 10 for daytime electricity.
The hot water storage tank 2 is also equipped with a heater 8 for late-night power use and a hot water temperature detector 12. Further, the hot water temperature detectors 11 and 12 are connected to a controller 13 provided in the external device 6, and a changeover switch 14 is disposed in the controller 13.

To explain the operation in the above configuration, when the capacity of hot water storage tanks 1 and 2 is each 1801, in summer when the amount of hot water used is small, only the heater 8 is used and the hot water temperature detector 12 is set to 86°C. 86℃ hot water is 1807! Hot water can be stored 0 If there is still hot water left, use only the heater 8 and set the hot water temperature detector 12'i to 65°C to reach 66°C.
It means that 180J of hot water can be stored, and the amount of hot water is 85J.
When converted to ℃, it is approximately 140E minutes, which can be used to save energy.In addition, in winter when hot water consumption is high, if heaters 7 and 8 are used and hot water temperature detectors 11 and 12 are set to 86℃, the temperature will reach 86℃. 3601 hot water is storedQ Furthermore, if you want the amount of hot water halfway between summer and winter, such as in spring and autumn, use heaters 7 and 8 and set hot water temperature detectors 11 and 12 to 66°C. If hot water at 66°C is converted to 3605°C, that is, 85°C, it can store approximately 270E of hot water and can boil water appropriate for the amount of water used.

In winter, if the amount of hot water used during the day increases due to visitors, or the number of people taking a bath increases, and the 3601 is insufficient for hot water at 86°C, use heaters 7.8 and 10 to adjust the water temperature. Detectors 11 and 12 are set at 86°C. In this case, the hot water storage tanks 1 and 2 are heated to 86° C. by the heaters 7 and 8 for late-night power, respectively, during the time when the power is turned on late at night.
Regarding the amount of hot water used during the day after the end of the midnight power supply period, the inside of the hot water storage tank 1 can be heated to 86℃ using the daytime power heater 1o. In this case, the amount of hot water that can be used is The capacity is larger than the combined capacity of 1 and 2, so there is no need to worry about running out of hot water several times a year and install an electric water heater with a higher capacity, and the installation space is small, saving space. can be achieved.

Note that the settings of the heater and the hot water temperature detector are changed using the changeover switch 14.

As described above, according to the electric water heater of the embodiment of the present invention, the amount and temperature of boiling water can be set according to the amount of hot water used, so there is no need to boil unnecessary water, minimizing electricity costs, saving energy, and storing hot water. Since it is possible to supply hot water in an amount greater than the capacity of the tank, there is no need to install an electric water heater with a higher hot water storage capacity, and space can be saved.

Effects of the Invention As is clear from the above-mentioned embodiments, according to the present invention, a hot water supply port of a hot water storage tank provided with a heater for late-night electricity use, a heater for daytime electricity use, and a hot water temperature detector; The water supply port of the hot water storage tank equipped with a power heater and hot water temperature detector is connected to the water supply port of the hot water storage tank, and the settings of each heater and hot water temperature detector can be switched, so the amount of boiling water can be adjusted according to the amount of hot water used. You can set the temperature of the hot water, so you won't have to boil water unnecessarily, minimizing electricity costs and saving energy. moreover,
Since the amount of hot water that is greater than the capacity of the hot water storage tank can be supplied, there is no need to install an electric water heater with a hot water storage capacity one rank higher, and an electric water heater that can save space can be provided.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an electric water heater according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a conventional electric water heater. 4...Water supply port, 6...Hot water supply port, 7, 8
...... Heater for late-night power, 9... Connection pipe, 10... Heater for daytime power, 11.
12...Water temperature detector, name of the 1st owner, patent attorney Shigetaka Awano, and one other person Figure 2 Figure 1

Claims (1)

[Claims] It has at least two hot water storage tanks, and the hot water supply port of one of the hot water storage tanks having a water supply connection from the water supply tank is connected by piping to the water supply port of the other tank having the hot water supply connection to the hot water supply point, and A hot water storage tank having a water supply connection from the hot water supply point is provided with a heater for late-night power and a heater for daytime power, and a hot water storage tank having a hot water connection to the hot water supply point is provided with a heater for late-night power; An electric water heater in which the boiling water temperature and boiling water amount in a hot water storage tank can be switched by a hot water temperature detector, a controller, and a changeover switch provided in each hot water storage tank.