JPH0141093Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an electric water heater.

Conventionally, various structures have been known as electric water heaters, but electric water heaters generally used in homes are capable of producing hot water of nearly 100°C for drinking coffee, tea, etc., and for cooking instant noodles, etc. Electric water heaters are broadly classified into electric water heaters called hot water dispensers that supply hot water, and electric water heaters that supply hot water at a lower temperature than the hot water dispenser for washing dishes, face washing, etc.

However, since these are provided as single-function electric water heaters for drinking or washing water, they can be used for both drinking and washing, that is, for example, to make coffee, etc., and also to clean dirty dishes. In order to wash with warm water, there is the inconvenience of having to install two electric water heaters of different models each with their own functions, and in that case, a large space is needed to install the two water heaters. Not only does this require complicated plumbing, but the kitchen area is cluttered and does not look good.

The purpose of the present invention is to solve the above-mentioned problems and to enable the same model of electric water heater to be used for both drinking and washing.

Therefore, the configuration of the present invention to achieve the above object includes a hot water storage tank, a water supply pipe connecting the hot water storage tank to a water supply source, a hot water supply pipe connecting the hot water storage tank to a water discharging device, and a water supply pipe connected in parallel to the water supply pipe. A drinking on/off valve and a hot water washing on/off valve each having a dedicated operation part, a hot water storage heater for heating and keeping the hot water in the hot water storage tank at a predetermined temperature, a reheating heater for reheating the hot water to be supplied, and The hot water outlet is provided with a hot water take-out part that brings the hot water into contact with the reheating heater and takes it out to the hot water supply pipe, and the reheating heater is operated only when the drinking on/off valve is opened.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, A is the body of the water heater, which is formed into a box shape and houses a hot water storage tank 1 inside, and has a power switch 10, a hot water washing operation handle 11, a hot water temperature adjustment lever 12, and a drinking push button on the front. Various operation parts such as buttons 13 are provided.

The hot water storage tank 1 is formed in a size that can store enough hot water to cover the amount of hot water used at one time for drinking or washing, for example, with a volume of 7. It has a water supply pipe 2 that protrudes outside the body A and is connected to a water supply source, and has a dispensing device 3 on the upper surface with a terminal portion protruding from the lower surface of the body A.
It has a hot water supply pipe 4 that connects.

The hot water storage tank 1 also includes a hot water storage heater 7 for constantly heating and keeping the hot water in the tank 1 at a predetermined temperature, for example, 85°C, and a hot water storage heater 7 for heating and keeping the hot water in the tank 1 at a predetermined temperature, for example, 85°C, and a hot water storage heater 7 for heating and keeping the hot water in the tank 1 at a predetermined temperature, for example, 85°C, and a hot water storage heater 7 for heating and keeping the hot water in the tank 1 at a predetermined temperature, for example, 85°C. It has a reheating heater 8 for reheating to a temperature close to that temperature.

The hot water storage heater 7 is energized and generates heat when the power switch 10 on the front of the container A is turned on, and when the water temperature in the tank 1 reaches a predetermined temperature (85°C), the energization is interrupted and the water temperature drops below the predetermined temperature. The electrical configuration is such that when the power goes down, the power supply is resumed.

In addition, the hot water storage heater 1 is 1000W in this example.
It is a seasonal heater, so that it can be used in ordinary homes with 10A wiring, so that when the reheating heater 8 is energized, the energization is interrupted, and when the energization to the reheating heater 8 is stopped, the energization is resumed. It also has a configuration.

The hot water storage heater 7 is attached to the lower part of the side wall of the tank 1 and inserted substantially horizontally into the tank 1.

The reheating heater 8 is the drinking push button 1 on the front of the container A.
The electrical configuration is such that when 3 is turned on, electricity is applied and heat is generated.

This reheating heater 8 is a 1000W ceramic heater formed into a cylindrical shape by opening a hot water outlet 9 in the axial direction. At least it is inserted vertically into the tank 1.

The holder portion 14 is provided with a through hole 15 that communicates with the hot water outlet 9 of the reheating heater 8, and the starting end of the hot water supply pipe 4 described above is connected to the through hole 15.

Further, the hot water storage tank 1 is provided with a hot water extraction chamber 16 surrounding the reheating heater 9 in order to efficiently take out only the high temperature hot water stored in the upper part of the tank.

The hot water outlet chamber 16 is provided vertically in a cylindrical shape from the upper surface of the hot water storage tank 1 to cover the outer peripheral surface of the reheating heater 8.
Its lower end is closed and an intake port 17 is provided on the circumferential surface of its upper end.

A slight gap exists between the inner peripheral surface of the hot water outlet chamber 16 and the outer peripheral surface of the reheating heater 8.

Therefore, when hot water is dispensed, from the intake port 17 to the hot water outlet chamber 16.
The hot water flowing into the reheating heater 8 flows in the axial direction along the outer peripheral surface of the reheating heater 8 , and flows from the lower end of the reheating heater 8 to the hot water supply pipe 4 via the hot water outlet 9 .

Therefore, the above-mentioned gap also constitutes a part of the hot water outlet section 9 that allows the hot water to be supplied to come into contact with the reheating heater 8 and flow.

The hot water to be supplied is reheated and heated while flowing through the hot water outlet 9 when the reheating heater 8 is activated.

On the other hand, the water supply pipe 2 is formed so that it once branches into a drinking water supply pipe 2a and a washing water supply pipe 2b at a midpoint, and then joins again to connect to the hot water storage tank 1. is provided with an on-off valve 5 for drinking, and an on-off valve 6 for washing hot water is provided in the water supply pipe 2b for washing hot water.

The drinking on/off valve 5 is connected to the drinking push button 13 on the front of the container A.
Consists of a solenoid valve that opens when activated.
The hot water washing on/off valve 6 is a manual valve that is opened and closed by rotating the hot water washing operation handle 11 on the front surface of the vessel A.

Further, the water supply pipe 2 is provided with a water supply pipe 19 for mixing hot water and water, which branches off from the water supply pipe 2b for washing hot water via a distribution valve 18 downstream of the on-off valve 6 for washing hot water, and connects to the middle of the water supply pipe 4. , in the hot water mixing water supply pipe 19,
A hot water mixing on/off valve 20 is provided, which is a solenoid valve that is normally open and closed when the drinking push button 13 is turned on.

The distribution valve 18 distributes the water supplied through the washing water supply pipe 19 to the hot water storage tank 1 side and the hot water mixing water supply pipe 19 side, and the temperature control lever 12 provided on the front side of the body A. The distribution ratio can be varied by operating the .

In addition, 23 is housed and arranged in the container A, and includes a power switch 10, a drinking push button 13, a hot water storage heater 7,
The operation unit 1 electrically communicates with the reheating heater 8, the drinking on-off valve 5, and the hot water mixing on-off valve 20, and controls the operation of each of the heaters 7, 8 and the on-off valves 5, 20.
This is a controller that controls according to the operations of 0 and 13.

Further, 21 is a drain valve, and 22 is an obstruction to prevent the water supplied from the water supply pipe 2 into the hot water storage tank 1 from directly flowing upward and lowering the temperature of the high temperature hot water stored above. It is a board.

Therefore, this electric water heater has a power switch of 10.
When the water is turned on, it becomes operational, and the hot water storage heater 7 generates heat to bring the hot water in the hot water storage tank 1 to a predetermined temperature (85°C).
Heat and maintain.

In this state, if the hot water washing operation handle 11 is rotated to open the hot water washing on/off valve 6, water will flow into the hot water storage tank 1 via the hot water supply pipe 2b, and this inflowing water will cause the inside of the tank 1 to be The hot water is pushed up, flows into the hot water supply pipe 4 through the hot water outlet 9, and is discharged from the discharge tool 3.

At this time, the reheating heater 8 is not energized, so
The hot water to be supplied is not heated, and hot water at 85° C. is pushed out into the hot water supply pipe 4.

At this time, since the hot water mixing on/off valve 20 of the hot water mixing water supply pipe 19 is open, a part of the water supplied via the hot water water supply pipe 2b is passed through the hot water mixing water supply pipe through the distribution valve 18. The hot water flows through channel 19, flows into hot water supply pipe 4, mixes with hot water pushed out from tank 1, and adjusts the temperature of the hot water to an appropriate temperature for washing water.

On the other hand, when the drinking push button 13 is turned on, the drinking on-off valve 5 is opened and the hot water mixing on-off valve 20 is closed.
And energizing the reheating heater 8 and hot water storage heater 7
At the same time, energization is interrupted.

Therefore, in this case, water flows into the tank 1 through the drinking water supply pipe 2a, and thereby the hot water in the tank 1 is pushed out through the hot water outlet 9 into the hot water supply pipe 4, but the reheating heater 8 Since the hot water is energized and generates heat, the hot water to be supplied is heated by reheating while flowing in contact with the reheating heater 8 at the hot water outlet 9.
The liquid is discharged from the dispensing device 3 at a temperature of 100° C. or close to 100° C., which is suitable for drinking.

In addition, in the above-mentioned embodiment, by adopting a structure in which the power supply to the hot water storage heater 7 is interrupted at the same time as power is supplied to the reheating heater 8, the maximum current can be suppressed to 10A or less, and special wiring work is not required even in ordinary homes. However, if the wiring is such that a current of 10 A or more can flow, a structure may be adopted in which both the reheating heater 8 and the hot water storage heater 7 are energized at the same time.

Since the present invention has the above configuration, it has the following advantages.

(1) Use an electric water heater of the same model to provide hot water at a temperature close to 100℃ for drinking coffee, black tea, green tea, etc. or cooking instant noodles, etc., and hot water at an appropriate temperature for washing dishes soiled by the above-mentioned eating and drinking. You can get it at

(2) Since one model can be used for drinking and washing water, there is no need to install two machines, and unlike installing two machines, it does not require a large space or clutter the kitchen area. Construction of piping, etc. is easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of an electric water heater showing an embodiment of the present invention, and FIG. 2 is a perspective view. 1...Hot water storage tank, 2...Water supply pipe, 3...Water outlet, 4...Hot water supply pipe, 5...Drinking on/off valve, 6...
...Hot water opening/closing valve, 7...Hot water storage heater, 8...Additional heating heater, 9...Hot water outlet.

Claims (1)

[Scope of utility model registration request] A hot water storage tank, a water supply pipe that connects the hot water storage tank to a water supply source, a hot water pipe that connects the hot water storage tank to a water discharging device, a drinking on-off valve and a hot water washing on-off valve that are installed in parallel with the water supply pipe and each has its own operating section. , a hot water storage heater for heating and keeping the water temperature in the hot water storage tank at a predetermined temperature, a reheating heater for reheating the hot water to be supplied, and a hot water to be supplied to be brought into contact with the reheating heater and taken out to the hot water supply pipe. An electric water heater that is equipped with a hot water outlet and that operates the reheating heater only when a drinking on/off valve is opened.