JPH1096558A - Hot water tank - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a new hot water tank capable of efficiently and evenly heating water and without danger of accidents such as tank breakage and heater disconnection. SOLUTION: A heater (6) is built in, and a water supply pipe (4) is provided.
And a water heating section (1) in which a drain pipe (5) is connected to the same tank surface (7), and an expanded water storage section (2) disposed above the water heating section (1) are separated by a partition plate (3). In the warm water tank, the partition plate (3) is 2 ° to 10 ° from the connecting surface (7) of the water supply pipe and the drainage pipe toward the facing surface (8).
And a ventilation hole (9) having a diameter of 10 mm or less is provided in parallel at or near the highest inclination position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water tank. More specifically, the present invention relates to a tank for supplying hot water in a hot water floor heating facility or the like, and more particularly to a hot water tank that efficiently heats circulating water and has no risk of accident such as breakage of the tank itself. .

[0002]

2. Description of the Related Art Conventionally, in a hot water floor heating facility or the like, a hot water tank with a built-in heater has been used as a device for supplying hot water at a constant temperature. FIG. 8 and FIG. 9 are an exploded perspective view and a side sectional view, respectively, illustrating a conventional hot water tank. The hot water tank usually has a water heating section (1) at a lower portion of the tank and an expanded water storage at an upper portion of the tank. The water heating section (1) and the expanded water storage section (2) are separated by a partition plate (3).

The water heating section (1) has a water supply pipe (4) and a drain pipe (5) connected to one side thereof, and the water supplied from the water supply pipe (4) is heated by a heater (6). ,
The water is discharged from the drain pipe (5) to an external pipe. On the other hand, cold water is stored in the expansion water storage section (2), and absorbs expansion of warm water in the water heating section (1). Further, a plurality of ventilation holes are provided in the middle partition plate (3) so that bubbles generated in the water heating section (1) are released to the expanded water storage section (2).

[0004]

However, in the case of the conventional hot water tank, the hot water heated by the heater (6) generates natural convection, and the high temperature water concentrates below the partition (3). In addition, there is a danger that the temperature in the tank may be partially increased, and the tank material may be deformed or damaged.

Also, depending on the position and size of the ventilation hole,
There is also a problem that the high-temperature water escapes to the expanded water storage section (2), and the heating efficiency is reduced. Furthermore, depending on the installation conditions (inclination, direction, etc.) of the hot water tank (1) and the position of the ventilation hole, bubbles generated during water heating do not escape to the expanded water storage section (2), and the middle partition plate (3) There was a danger of abnormal heat generation due to empty heating of the heater (6) and disconnection of the heater.

The present invention has been made in view of the circumstances described above, and solves the conventional problems, can efficiently and uniformly heat water, and has a problem such as tank breakage and heater disconnection. The aim is to provide a new hot water tank without the risk of accidents.

[0007]

According to the present invention, there is provided a water heating section having a built-in heater, a water supply pipe and a drain pipe connected on the same surface, and an expansion section disposed above the water heating section. In the warm water tank in which the water storage section is partitioned by the middle partition plate, the middle partition plate is inclined upward from the connection surface of the water supply pipe and the drain pipe toward the opposite surface,
A hot water tank is provided, in which ventilation holes are provided in parallel at or near the highest inclination of the middle partition plate.

In the hot water tank of the present invention,
In a preferred embodiment, the inclination angle of the intermediate partition plate is 2 to 10 °, and the diameter of the vent hole is 10 mm or less.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a hot water tank according to an embodiment of the present invention.

[0010]

1A and 1B are a side sectional view showing an embodiment of a hot water tank according to the present invention and a perspective plan view of a partition of the hot water tank, respectively. For example, in FIG.
As exemplified in (B), in the hot water tank of the present invention,
A water heating section (1) having a built-in heater (6) and an expanded water storage section (2) above the water heating section (1) are separated by a partition (3), and the partition (4) is provided with a water supply pipe ( 4) and from the connecting surface (7) of the drain pipe (5) toward the opposite surface (8). The inclined partition plate (3) is provided with air holes (9) in parallel near the highest position.

Since the middle partition plate (3) is inclined, the hot water flows smoothly and the temperature of the hot water maximum area immediately below the middle partition plate (3) can be reduced as compared with the conventional case. In addition, since the ventilation holes (9) are arranged in parallel near the highest position of the vertically inclined partition (3), the bubbles generated in the water heating section (1) can be reliably stored in the expanded water. It can escape to the part (2).

As for the arrangement of the ventilation holes (9) in the middle partition plate (4), they are usually arranged in two places in parallel as shown in FIG. For example, with the hot water tank with the above configuration,
Unprecedented performance will be obtained. For example,
FIG. 2 shows the result of simulating the temperature distribution of hot water in the hot water tank (10) of the present invention provided with the partition plate (3) installed at an inclination angle of 6 °.
As is clear from the comparison with FIG. 3 showing the result of the conventional hot water tank (20) in which the partition plate (3) is installed horizontally, in the case of the hot water tank (10) of the present invention, Maximum temperature (68 ° C.) in water heating section (1) as shown in FIG.
Is lower than the maximum temperature (78 ° C.) of the conventional tank (20) in FIG. 3, and it can be seen that the region of the maximum temperature (68 ° C.) is also small. The temperature of the hot water discharged from the drain pipe was the same at about 59 ° C. in each case. As described above, in the hot water tank (10) of the present invention, the temperature of the high-temperature water staying below the partition plate (3) can be lowered, so that the risk of breakage and deformation of members is greatly reduced. I do.

In the present invention, the inclination angle of the partition (3) is preferably 2 ° or more and 10 ° or less. When the angle is smaller than 2 °, the effect of the inclination is small and 10 °
If it is larger than °, the temperature difference between the vicinity of the connecting portion of the drain pipe (5) becomes too large and it becomes difficult to obtain suitable hot water. FIG. 4 shows a simulation result of the temperature distribution of the hot water tank (30) when the ventilation holes (9) are arranged at the front and rear positions of the middle partition plate (3) as shown in FIG. It is. Since the ventilation hole (9) is separately arranged at a high position and a low position, the maximum temperature of the hot water (64 to 68 ° C.) is compared with FIG. 2 showing the simulation result of the hot water tank (10) of the present invention. Is confirmed to be wider. This also shows that the configuration of the hot water tank of the present invention is more advantageous.

FIG. 6 is a diagram showing a temperature change with respect to the tank height in the water heating section (1) and the expanded water storage section (2). The solid line in the figure shows the temperature change of the hot water tank (10) of the present invention illustrated in FIG. 1, and the dotted line shows the temperature change of the control hot water tank (30) shown in FIGS. 4 and 5. . Compared to the hot water tank (10) of the present invention, it is confirmed that the water temperature in the expanded water storage section (2) is higher and the heat loss is larger in the control hot water tank (30).

FIG. 7 shows a tank in which the diameter of the vent hole 9 is 5 mm (solid line), 10 mm (dotted line), and 20 mm (dot-dash line) in the hot water tank (10) shown in FIG. FIG. 5 is a diagram showing a temperature change in the inside in relation to a tank height. As is clear from FIG. 7, when the diameter of the ventilation hole (9) is 20 mm, the water temperature in the expanded water storage section (2) increases, and the heat loss increases. On the other hand, when the diameter is 10 mm or less, no increase in water temperature in the expanded water storage section (2) is observed, and efficient heating is performed. Accordingly, in view of this, in the hot water tank of the present invention, it is preferable that the diameter of the vent hole (9) is 10 mm or less.

Of course, the present invention is not limited to the above-described examples, and it goes without saying that various embodiments are possible in detail.

[0017]

As described in detail above, according to the present invention, water can be efficiently and uniformly heated, and there is no danger of accidents such as tank breakage and heater disconnection.
A new hot water tank is provided.

[Brief description of the drawings]

FIG. 1A is a side sectional view showing an embodiment of a hot water tank according to the present invention, and FIG. 1B is a perspective plan view of a partition of the hot water tank.

FIG. 2 is a diagram showing a simulation result of a hot water distribution in a hot water tank of the present invention provided with a partition installed at an inclination angle of 6 °.

FIG. 3 is a diagram showing a simulation result of hot water distribution in a conventional hot water tank in which a middle partition plate is horizontally installed.

4 is a diagram showing a simulation result of a hot water distribution in a control tank provided with a partition installed at an inclination angle of 6 ° at the position of the ventilation hole shown in FIG. 5;

FIG. 5 is a plan perspective view showing a middle partition plate of a control tank.

FIG. 6 is a diagram showing a change in water temperature of a hot water tank (solid line) and a control tank (dotted line) of the present invention as a relationship with the tank height.

FIG. 7 is a diagram showing a change in water temperature in a tank due to a difference in the size of a vent hole as a relationship with a tank height.

FIG. 8 is an exploded perspective view illustrating the configuration of a conventional hot water tank.

FIG. 9 is a side sectional view illustrating a conventional hot water tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water heating part 2 Expansion water storage part 3 Middle partition plate 4 Water supply pipe 5 Drain pipe 6 Heater 7, 8 Tank surface 9 Vent hole 10 Hot water tank 20 Conventional tank 30 Control tank

Claims (3)

[Claims] 1. A hot water tank having a built-in heater, in which a water supply pipe and a drain pipe are connected on the same surface, and an expansion water storage section disposed above the water heating section are partitioned by a partition plate. The middle partition plate is inclined upward from the connecting surface of the water supply pipe and the drain pipe toward the opposite surface, and a ventilation hole is provided in parallel at the highest position of the middle partition plate or in the vicinity thereof. A hot water tank characterized by the following. 2. The hot water tank according to claim 1, wherein the inclination angle of the partition plate is 2 to 10 °. 3. The hot water tank according to claim 1, wherein the diameter of the vent hole is 10 mm or less.