JPH02609Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a hot water storage type water heater that converts water in a hot water storage tank into hot water using, for example, late-night electricity, and particularly relates to an improvement in the hot water storage structure.

[Technical background of the invention and its problems]

For example, hot water storage type water heaters that use late-night electricity to obtain hot water for use in kitchens, washrooms, and bathrooms are often used.

This type of hot water storage type water heater was initially constructed as shown in FIG. That is, a is a hot water storage tank, a water supply pipe b communicating with a water supply source is connected to the lower end thereof, and a hot water supply pipe c having a hot water tap (not shown) at its top end is connected to the upper end thereof. Further, an electric heater d, which is a heating element, is housed in the lower part of the hot water storage tank a, and heats the water in the hot water storage tank a to convert it into hot water only during so-called late-night electricity charges. Of course, the outer circumferential wall of the hot water storage tank a is wrapped with a heat insulating material (not shown) to provide a heat retaining structure.

Thus, the hot water heated to a predetermined temperature in the hot water storage tank a late at night is provided for a desired purpose by opening the hot water tap. Further, as hot water is supplied, the same amount of water is replenished from the water supply pipe b to the hot water storage tank a, so that a full amount of hot water is always stored in the tank a. The replenished water accumulates at the bottom of the bath due to the temperature difference, and the water level gradually rises as the bath is used, but it rarely mixes with the bath. Therefore, there is almost no drop in the hot water supply temperature until all of the initially generated hot water is supplied.

However, once all the hot water in the hot water storage tank a is used up, the replenished water will be drawn out as is. For example, even when hot water is required immediately after power is turned on late at night, it is necessary to wait until all the water in the hot water storage tank a is replaced with hot water, which is time consuming and impractical.

Therefore, conventionally, a hot water storage type water heater having a structure as shown in FIG. 6 has been used. That is, A
is a hot water storage tank, b is a water supply pipe, and c is a hot water supply pipe. d is an electric heater which is a heating element, and also uses late-night electricity to generate heat. E
is a heating section which is a box that houses the electric heater d, and a guide pipe f connected to the upper end surface of the heating section passes through the lower end surface of the hot water storage tank A and extends to the upper end inside. A thermovalve g is provided in the middle of the guide tube f, and automatically opens upon sensing the temperature set according to the user's preference. h is a conduction pipe that guides the hot water in the lower part of the hot water storage tank A to the heating section E.

Thus, the water in the lower part of the hot water storage tank A is led to the heating section E via the conduction pipe h, where it is heated and generated by the electric heater d and converted into hot water. The hot water is then led to the upper part of the hot water storage tank A via the guide pipe f, and is gradually stored in the lower part. Electric heater d is heating part E
Since the water inside can be replaced with hot water, the heating time can be shortened. Therefore, after all the hot water in the hot water tank A has been used up, if hot water is needed immediately after midnight electricity is turned on, the hot water heated in the heating section E can be used. That is, the time it takes to generate hot water is shorter than that of the water heater having the structure shown in FIG. 5, and it is easy to use.

However, there are times when an amount of hot water exceeding the capacity of the heating section E is required. In this case, heating section E
When all of the hot water produced in is dispensed, water will flow through the guide pipe f, so the thermovalve g immediately detects the temperature and closes the guide pipe f. Therefore, water is suddenly supplied from the hot water supply pipe c. In the end, it is necessary to wait until the water in the heating section E rises to the set temperature again, which is not practical.

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to provide a hot water storage type water heater that can obtain a desired amount of hot water at a desired temperature and is more convenient to use. This is what I am trying to do.

[Summary of the idea]

In other words, the present invention connects a hot water tap for discharging hot water to the upper end of a hot water storage tank, connects a water supply pipe to the lower part, and accommodates a guide pipe extending from the lower part to the upper part of the hot water storage tank. A thermo valve that opens the guide tube when the set temperature is detected is installed in the middle of the tube, and a heating element that heats the water at the bottom of the hot water storage tank is housed at the lower end of the guide tube, and the heated hot water is guided to the guide tube. A plurality of sensors are provided at predetermined intervals in the vertical direction on the peripheral wall of the hot water storage tank, and the sensors are electrically connected to the thermovalve to instruct one of them to generate the desired amount. This hot water storage type water heater is characterized by being able to store hot water in a hot water storage tank.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings. As shown in FIG. 1, reference numeral 1 denotes a hot water storage tank which is a vertically long sealed container. A hot water supply pipe 3 having a hot water tap 2 provided at its tip is connected to the upper end surface of the hot water storage tank 1. Further, a water supply pipe 4 communicating with a water supply source is connected to the lower end surface of the hot water storage tank 1 . Reference numeral 5 denotes a heating body housed in a heating section 6, which is a box, and is composed of an electric heater 5a that generates heat using late-night electricity, and an electric heater 5b that generates heat using normal electricity. A guide pipe 7 is connected to the upper end surface of the heating section 6, and extends through the lower end surface of the hot water storage tank 1 to the upper end thereof. Furthermore, between the heating part 6, which is the midway part of the guide pipe 7, and the hot water storage tank 1, there is a thermovalve that senses the temperature set according to the user's preference and automatically opens the guide pipe 7. 8 is provided. Further, on the peripheral wall of the hot water storage tank 1, a plurality of sensors 9a to 9d are provided at predetermined intervals along the vertical direction.
are provided, and these are electrically connected to the thermovalve 8, respectively. For convenience of explanation, the topmost sensor 9a is referred to as the first sensor 9a, and below, in order, the second sensor 9b, the third sensor 9c, and the fourth sensor 9a.
However, the number of sensors is not limited, of course. Reference numeral 10 denotes a conduction pipe that guides the hot water in the lower part of the hot water storage tank 1 to the heating section 6.

Thus, the water supplied from the water supply pipe 4 fills the heating section 6 via the hot water storage tank 1 and the conduction pipe 10, and the amount released when the hot water tap 2 is opened is automatically replenished. When the late-night electricity rate comes, the electric heater 5a using late-night electricity generates heat and replaces the water in the heating section 6 with hot water. The thermovalve 8 detects the set temperature and opens the guide pipe 7, and hot water is stored from the upper part to the lower part of the hot water storage tank 1. Therefore,
If the hot water tap 2 is opened, hot water at a desired temperature can be supplied.

For example, if all the hot water in the hot water storage tank 1 is used up by noon and you need hot water before or after power starts in the middle of the night, the first
Either the fourth sensor 9a or the fourth sensor 9d is specified. For example, if the required amount is extremely small, the first sensor 9a is designated. That is, for example, the first
All you have to do is turn on the sensor switch. Then, the electric heater 5b that uses normal electricity generates heat, and hot water is generated as in the case of the late-night electricity charge, and as shown in FIG.
The alarm buzzer will sound when the hot water reaches the vicinity of the area. Since the quantity is small, the desired amount of hot water can be obtained in an extremely short period of time.

Also, if you want to get even more hot water,
For example, the switch for the second sensor 9b may be turned on. As shown in FIG.
An alarm buzzer will notify you when the hot water has been stored up to the point near b. The same applies to the other sensors 9c and 9d. In any case, the amount of hot water required by the user can be obtained in a short time, and the waiting time can be shortened.

In the above embodiment, the hot water storage tank 1 and the heating unit 6 are completely separated and communicated with each other via the guide pipe 7, but the invention is not limited to this, and as shown in FIG. Alternatively, the inside of the hot water storage tank 11 may be partitioned by a partition plate 12, and the lower side of the partition plate 12 may be used as a heating section 13 in which the heating body 5 is accommodated. The hot water supply pipe 3 is connected to the upper end of the hot water storage tank 11, and the water supply pipe 4 is connected to the upper part of the partition plate 12. The guide pipe 7 is connected on the partition plate 12 and extends toward the upper part of the hot water storage tank 11. A thermovalve 8 will be provided in the middle. Note that the conduction pipe 10 is connected to the lower part of the partition plate 12 and extends toward the heating section 13 side. It goes without saying that a plurality of sensors 9a to 9d are provided on the circumferential wall of the hot water storage tank 11 at predetermined intervals in the vertical direction, and the same effects as in the above embodiment can be obtained.

Further, in each of the above embodiments, an electric heater that uses late-night power or normal power is used as the heating element 5, but the invention is not limited to this, and an electric heater that uses only late-night power or normal power or an electric heater that uses only late-night power or normal power may be used as the heating element 5. Oil burners, gas burners, etc. may also be used.

[Effect of idea]

As explained above, according to the present invention, it is possible to obtain hot water at a desired temperature and in a desired amount in a short time.
This has the effect of improving usability.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention; Figure 1 is a schematic diagram of a hot water storage type water heater;
3 and 3 are explanatory diagrams showing different hot water storage states, FIG. 4 is a schematic configuration diagram of a hot water storage type water heater showing another embodiment of the present invention, and FIGS. 5 and 6 are conventional diagrams of the present invention. FIG. 2 is a schematic configuration diagram of different hot water storage type water heaters showing examples. 2... Hot water tap, 4... Water supply pipe, 1... Hot water storage tank, 7... Guide pipe, 8... Thermo valve, 5...
Heating body (electric heater), 6... heating section, 9a to 9d... (first to fourth) sensors.

Claims (1)

[Scope of utility model registration request] A hot water storage tank to which a hot water supply faucet for discharging hot water is connected to its upper end and a water supply pipe is connected to its lower part, a guide pipe extending from the lower part to the upper part of the hot water storage tank, and a guide pipe extending from the lower part to the upper part of the tank, and a middle part of the guide pipe. a thermovalve that is installed in the section and opens according to the set temperature; a heating section that communicates with the lower end of the guide pipe and accommodates a heating element that heats the water at the lower end of the hot water storage tank and leads the hot water to the guide pipe; A plurality of sensors are provided on the peripheral wall of the hot water storage tank at predetermined intervals in the vertical direction, are electrically connected to the thermovalve, and store a desired amount of hot water in the hot water storage tank by instructing one of the sensors. A hot water storage type water heater characterized by comprising: