JP2589272Y2 - Instantly heated water heater - Google Patents

Description

[Detailed description of the invention]

[0001]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot water heater. More specifically, the present invention relates to an instantly heated water heater widely used for home and business use.

[0002]

2. Description of the Related Art A conventional hot water supply device has a heater inside a hot water storage tank, connects a water supply pipe below the hot water storage tank to supply water, and connects a hot water supply pipe above the hot water storage tank to supply hot water. It is configured to take out.

[0003]

However, in the conventional water heater, since the entire water in the hot water storage tank is always heated by the heater, the heating time until the hot water becomes long, and after the hot water is completely used up, the hot water is consumed. There was a problem that it took a long time to boil and extract. From the user's standpoint,
Needless to say, it is convenient and convenient if it has a function of immediately heating hot water even after it has run out. However, almost all water heaters on the market today do not have an immediate heat function. Also, the water heater may have a heater etc. built in the hot water storage tank,
It is preferable that maintenance and inspection of the heater and various control devices be easy.

Accordingly, an object of the present invention is to provide a hot water heater that has a current hot water heater that does not have a rapid heating function and has a rapid heating function by simple additional construction. Another object of the present invention is to provide a hot water heater that can be easily maintained and inspected even when it is manufactured as a new product instead of being improved by additional work.

[0005]

The hot water heater of the present invention comprises a hot water heater and an intermittent hot water heater having no immediate heating function. The hot water heater has a hot water storage tank and a lower part of the hot water storage tank. , A hot water supply pipe connected above the hot water storage tank, and a hot water tap interposed in the hot water storage pipe, and the intermittent hot water heater has a capacity larger than that of the hot water storage tank. A small heating tank, and a water supply connection pipe connecting between a lower part of the heating tank and a water supply pipe of the hot water storage type water heater,
A hot water supply connection pipe that connects between the upper side of the heating tank and a hot water supply pipe of the hot water supply type water heater, a temperature sensing open / close valve attached to the hot water supply connection pipe, and a heater disposed in the heating tank And the water supply connection pipe is interposed in the water supply pipe.
The hot water supply connection pipe is connected to the hot water supply pipe.
The hot water supply connection pipe is connected by an interposed pipe joint.
It is connected so as to project downward from the top plate of the heat tank,
The temperature sensing on-off valve is attached to the opening at the lower end of the hot water supply connection pipe
The temperature sensing on-off valve and the heating tank
Air vent holes in the side wall of the hot water connection pipe between
There characterized that you have been formed. The temperature sensing on-off valve according to the present invention is an on-off valve that opens when the temperature in the heating tank reaches a predetermined temperature (for example, 90 ° C.) and closes when the temperature is lower than the predetermined temperature.

[0006]

The heating tank in the present invention has a smaller capacity than the hot water storage tank, and since the open / close valve is closed until the hot water in the heating tank is heated to hot water, a small amount of water or hot water is heated in a closed state. Therefore, it can be boiled in a short time. When the on-off valve in the heating tank detects the temperature of the hot water (eg, 90 ° C.) and opens the valve, the hot water has a low density and the water has a high density. To the hot water storage tank, and water is supplied into the heating tank from the water supply connection pipe. Intermittent hot water heaters and the hot and cold water supply function are performed alternately, and hot water is intermittently fed into the hot water storage tank. Just by doing, you can have the immediate heat function. Also , in the present invention, the intermittent hot water supply to the existing hot water supply type water heater that does not have the immediate heating function is performed by simply adding the water supply connection pipe and the hot water supply connection pipe to the water supply pipe and the hot water collection pipe on the hot water storage tank side. A device can be connected to provide immediate heat function. Also,
Even from the beginning, even when manufacturing and installing an instantaneous hot water heater that combines a hot water heater and an intermittent hot water heater, maintenance and inspection of the heater and the on-off valve can be performed only with the intermittent hot water heater, and the intermittent hot water heater is supplied with water. Since the connection pipe and the hot water supply connection pipe can be arranged in an arbitrary route and installed in a place where maintenance and inspection are easy, maintenance and inspection is facilitated. Furthermore, in the present invention, the air vent hole is
Hot water supply connection pipe between the on-off valve and the top plate of the heating tank
Air dissolved in water because it is formed on the side wall of
Can be removed to store hot water in the heating tank.
The amount of hot water does not decrease.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, A is an intermittent hot water heater, and B is a hot water storage water heater. The hot-water storage type water heater B itself does not have an immediate heating function, and has a configuration similar to that of a conventional water heater. That is, the hot water storage type water heater B includes the hot water storage tank 1, a water supply pipe 13 connected below the hot water storage tank 1, and a hot water supply pipe 15 connected above the hot water supply pipe 13. When the existing hot water heater B is modified to the instant hot water heater of the present invention, the heater installed inside or outside the hot water storage tank 1 is removed, or the hot water heater is not used as a heat source. What should I do? In the case of newly manufacturing, it is not necessary to attach a heater to the hot water storage tank 1 side.

The water supply pipe 13 is provided with a pressure reducing valve 14 for supplying water at a pressure lower than the water pressure of the water supply pipe when the water supply pipe 13 is connected to the water supply pipe to supply water. A water supply and impermeable plate 12 is arranged immediately above the opening in the inside. Further, a safety valve 17 and a hot water tap 16 are interposed in the hot water supply pipe 15. The outer periphery of the hot water storage tank 1 is covered with a heat insulating material 2, and the outer surface thereof is surrounded by an outer plate 3.

The intermittent hot water heater A is configured as shown in FIGS. Reference numeral 6 denotes a heating tank, below which a water supply connection pipe 24 is connected. Water supply connection pipe 24
A water supply and impermeable plate 12 is installed immediately above the opening. The water supply connection pipe 24 is connected to the water supply pipe 13 by a pipe joint 26, and the water depressurized by the pressure reducing valve 14 is supplied into the heating tank 6. A hot water supply connection pipe 25 is connected above the heating tank 6, an air vent valve 18 is interposed in the middle of the hot water supply connection pipe 25, and the other end is connected to the hot water supply pipe 15 by a pipe joint 27. . Although not shown, the water supply connection pipe 24 and the hot water connection pipe 25 are preferably covered with an arbitrary heat insulating material.

As clearly shown in FIG. 4, the hot water supply connection pipe 25
Has a lower end projecting into the heating tank 6, and an opening at the lower end thereof is provided with a temperature sensing on-off valve 11 (hereinafter, referred to as on-off valve 11) . Off valve 11 of this is opened when the hot water in the heating tank 6 is turned e.g. 90 ° C., a valve which closes in it than Shitamawaru temperature. An air vent hole 21 is formed in the side wall of the hot water supply connection pipe 25 slightly above the on-off valve 11. The air vent hole 21 is provided for removing air dissolved in water and storing hot water in the heating tank 6 as much as possible. Reference numeral 5 denotes a heater, which corresponds to the heater described in the claims for utility model registration. In addition, an arbitrary heat source such as a heat exchanger can be used in addition to the electric heater. A thermostat 22 is provided for controlling the temperature of hot water, and a thermobreaker 23 is provided for preventing overheating.

In the above-described intermittent hot water heater A, when boiling water, water is supplied from the water supply connection pipe 24 into the heating tank 6 and the heater 5 is energized. At this time, since the water temperature in the heating tank 6 is low, the on-off valve 11 is closed, and the water in the heating tank 6 is immovably confined. Therefore, all the heat of the heater 5 is used for heating the water, and is efficiently heated to the hot water. The air dissolved in the water during the heating is separated from the water.
Since the water flows out from 21 to the hot water supply connection pipe 25, there is no inconvenience that air is accumulated in the upper part in the heating tank 6 and the amount of hot water is reduced.

The water in the heating tank 6 is heated to a predetermined temperature (for example, 90
(° C.), the hot water HW in the heating tank 6 can be extracted from the hot water supply connection pipe 25 because the on-off valve 11 detects the high temperature and opens. Of course, since the hot water HW is boiled in a confined state, it is not mixed with the low-temperature water, and is a uniform temperature hot water HW. When the hot water HW is taken out from the hot water supply pipe 15, the water W is supplied from the water supply connection pipe 24 into the heating tank 6, and the hot water HW is filled while being pushed up. At this time, the density difference between the hot water HW and the water W is large, and the two do not mix at the boundary portion L. Therefore, the hot water HW taken from the hot water supply connection pipe 25 is hot water in which low-temperature hot water is not mixed. When the heating tank 6 is full of water W, the on-off valve 11 feels low temperature and closes, so that the heating tank 6 is again closed and heated by the heater 5. Thereafter, when the above heating and hot water collection are repeated, the hot water HW can be intermittently supplied.

The operation of the entire hot water heater will be described with reference to FIGS. FIG. 1 shows a state in which hot water is stored in an upper part in a hot water storage tank 1, and the lower part is water. Hot water HW and water W
Have a large density difference and do not mix with each other.
When the hot water tap 16 is opened, hot water is taken from the hot water storage tank 1 as shown in FIG. 2 (solid arrow). Also at the same time water pipe 13
More water is supplied into the hot water storage tank 1. On the other hand, in the intermittent hot water heater A, the water in the heating tank 6 is heated. When the hot water in the heating tank 6 reaches a predetermined temperature (for example, 90 ° C.)
Since the open / close valve 11 is opened, hot water is stored in the upper portion of the hot water storage tank 1 through the hot water supply connection pipe 25 and the hot water supply pipe 15 as shown by a solid arrow in FIG. Are taken directly to When the hot water HW is replenished into the hot water storage tank 1 from above, the water in the hot water storage tank 1 is pushed down, and is supplied to the heating tank 6 via the water supply connection pipe 24 as shown by a dotted arrow. Thus, in the present invention, since hot water can always be stored in the hot water storage tank 1, hot water can be taken out immediately, and hot water can be taken out in a short time even when the hot water runs out.

Next, another embodiment of the present invention will be described.
Although the hot water storage tank 1 is a vertical type in the above embodiment, the present invention can be applied to the type and type of the hot water storage tank 1 without any particular limitation. Therefore, the horizontal hot water storage tank 1 as shown in FIG.
Can be used to construct an instantly heated water heater. In addition,
In the horizontal hot water storage tank 1, in addition to the water-supply plate 12 for water supply, a water-supply plate 12 a for hot water supply is provided immediately below the opening of the hot-water supply connection pipe 25. Other configurations are substantially the same as those in the embodiment of FIG. 1, and therefore, the same portions are denoted by the same reference numerals and description thereof will be omitted.

In each of the above embodiments, the number of hot water storage tanks 1 is one. However, the number of hot water storage tanks 1 may be two or more. FIG. 6 shows an example in which two intermittent hot water heaters A are combined with two hot water heaters B1 and B2, and two hot water storage tanks 1 are provided. The hot water supply pipes 25 are connected to the hot water pipes 15, the water supply connection pipes 24 are connected to the respective water supply pipes 13, and the hot water taps 16 are attached to appropriate places of the hot water supply connection pipes 25 or the hot water supply pipes 15 to take out hot water to the outside. What should I do?
In addition, the hot water storage tank 1 may be a horizontal type other than a vertical type,
Further, it is needless to say that the number of the hot water taps 16 is not limited to one but may be two or more.

Next, advantages of the above embodiments will be described. Intermittent hot water supply to existing hot water storage type water heater B which does not have an immediate heating function only by simple additional work of connecting the water supply connection pipe 24 and the hot water supply connection pipe 25 to the water supply pipe 13 and the hot water supply pipe 15 on the hot water storage tank 1 side The device A can be connected to provide a rapid heating function. From the beginning, even when manufacturing and installing a rapid heating water heater combining the hot water storage water heater B and the intermittent hot water heater A, the heater 5
And maintenance of the on-off valve 11 can be performed only with the intermittent hot water heater A.
In addition, the intermittent hot water heater A has a water supply connection pipe 24 and a hot water supply connection pipe 25.
Can be arranged in an arbitrary route and installed in a place where maintenance and inspection are easy, so that maintenance and inspection are facilitated.

[0017]

[Effects of the Invention] According to the present invention, a hot water storage type water heater having no immediate heat function can be heated in a short time with a simple additional construction.
Even after the hot water has run out, it can be provided with an immediate heat function for extracting hot water in a short time. Further, there is an effect that maintenance and inspection are easy. Furthermore, in the present invention, the air vent hole senses temperature.
The hot water supply connection pipe between the on-off valve and the top plate of the heating tank
Air dissolved in water because it is formed on the side wall
You can store hot water in the heating tank
The amount of hot water does not decrease.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a hot water heater according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a tapping action of the rapid heating water heater of FIG. 1;

FIG. 3 is an explanatory diagram of a hot-water storage operation of the hot water heater of FIG. 1;

FIG. 4 is an enlarged explanatory view of the intermittent hot water heater shown in FIG. 1;

FIG. 5 is an explanatory view of a hot water heater according to another embodiment of the present invention.

FIG. 6 is an explanatory view of a hot water heater according to still another embodiment of the present invention.

[Explanation of symbols]

1 Hot water storage tank 5 Heater 6
Heating tank 11 Temperature sensing on-off valve 13 Water supply pipe 15
Hot water supply pipe 16 Hot water tap 24 Water supply connection pipe 25
Hot water connection pipe

Claims (1)

(57) [Scope of request for utility model registration] 1. A hot water supply device having no hot water function and an intermittent hot water supply device, wherein the hot water supply device includes a hot water storage tank, a water supply pipe connected below the hot water storage tank, and a hot water storage tank. The intermittent hot water heater comprises a hot water supply pipe connected to an upper part of the tank and a hot water tap interposed in the hot water supply pipe. A water supply connection pipe connecting between a lower part and a water supply pipe of the hot water supply type water supply, a hot water supply connection pipe connecting between an upper part of the heating tank and a water supply pipe of the hot water storage type water supply, and the hot water supply connection a temperature sensing opening and closing valve attached to the tube, Ri Do from the arranged heaters in the heating tank, the water supply connection pipe is connected with a pipe joint which is interposed in the water supply pipe
The hot water supply connection pipe is connected by a pipe joint interposed in the hot water supply pipe.
And the hot water supply connection pipe projects downward from the top plate of the heating tank.
And connected to the opening at the lower end of the hot water supply connection pipe.
The temperature sensing on-off valve is mounted, and a temperature sensing on-off valve is provided between the temperature sensing on-off valve and the top plate of the heating tank.
An air vent hole is formed in a side wall of the hot water supply connection pipe.
Immediate thermal water heater, characterized in that that.