JPH10103781A - Hot water storage type water heater - Google Patents

Abstract

(57) [Summary] [Problem] Water supply in tanks during disasters such as earthquakes and fires,
The hot water is temporarily used as emergency water. SOLUTION: An operation section 53 is provided, one end of which is attached to a valve body 52 of an overpressure prevention section 50 and the other end is arranged outside an opening / closing lid 60 of an outer case 22. It is designed to be taken out from the prevention unit 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water storage type water heater, and more particularly to a hot water storage type water heater in which water stored in a tank is temporarily used as emergency water in the event of a disaster such as an earthquake or a fire.

[0002]

2. Description of the Related Art Houses and high-rise houses are equipped with hot water storage type water heaters using electric power such as midnight electric power and are often used as a hot water supply source.

As shown in FIG. 8, the hot water storage type water heater 10 is provided with a relatively long cylindrical tank 11.
A water supply pipe 14 having an on-off valve 12, a safety valve 13 and the like is attached to a lower part of the tank 11, and a faucet 15 is provided at an upper part.
A hot water supply pipe 17 having a safety valve 16 and the like is attached, and a heater 18 as a heating unit and an overpressure prevention unit 19 are attached to an intermediate lower portion of the tank 11.

[0004] The tank 11 is mounted on a support 21 mounted on a foundation 20 and provided with an outer case 22 via a heat insulating material (not shown).

[0005] The overpressure preventing section 19 is provided with a body 30 as shown in Figs. Inside the body 30, a valve seat 31 having a hollow hole, a valve body 32 having a rubber packing and a top, a spring 33, a spring holding plate 34, a C ring 35, and the like are provided. The body 30 on the valve seat side is attached to the tank 11.

A drain pipe 37 such as a vinyl tube is connected to the body 30 on the side of the spring holding plate 34 via a rubber L-shaped pipe 36 so as to discharge water stored in an abnormal state to the outside of the outer case 22. Has become. Reference numeral 39 denotes an open / close lid slidably attached to the outer case 22.
For inspection and repair.

[0007] Tap water is supplied to the tank 11 of the hot water storage type water heater 10 having such a configuration from a water supply pipe 14 to store about 300 to 500 liters of water. The stored water is heated by a heater 18 using midnight power and stored as warm water, and the user opens the faucet 15 as necessary to obtain warm water.

In this hot water storage type water heater 10, the safety valve 13 is released when the supply water pressure becomes higher than a predetermined value, and when the supply water pressure becomes higher than a predetermined value, the safety valve 16 is released.
To avoid this.

Further, in such a use condition, if an abnormality occurs in the safety valves 13 and 16 due to a malfunction,
There is no escape place for the expansion water, and the valve
Is pushed out against the pressing force of the spring 33 so that hot water, steam and the like are released outside through the L-shaped pipe 36 and the drain pipe 37.

[0010]

As described above, the hot water storage type water heater 10 is a kind of water storage source and hot water supply source for general consumers. However, in the event of a disaster such as an earthquake or a fire, the safety of the users is impaired due to collapse or the like. However, when the water supply is cut off or the tap water pressure drops, the water is not supplied from the tap water through the water supply pipe.
There was a problem that hot water was not used at all.

In order to solve this problem, a foundation and a support stand are strengthened to prevent collapse, while an emergency water tap is separately attached to the lower portion of the tank as described in Japanese Utility Model Publication No. 1-8913. I have to.

However, the emergency hydrant described in Japanese Utility Model Publication No. 1-8913 has a problem in that it is not only rarely used but also protrudes from the outer case in daily life, so that it becomes an obstacle.

In addition, there is a problem that the cost of the hot water storage type water heater 10 is increased because a separate component is attached thereto.

In addition, there is an emergency drain valve which is provided with an emergency drain valve branched from a water supply pipe or a drain pipe (Japanese Utility Model Publication No. Hei 7-4448, Japanese Patent Laid-Open Publication No. Hei 8-14661). The problem could not be solved properly.

In order to solve the above-mentioned problems, the present invention has a relatively simple structure, and is capable of supplying emergency water by preventing an emergency drain plug from hindering a normal state. It is an object to provide a hot water storage type water heater.

[0016]

According to the present invention, a water supply section is provided at a lower portion,
In a hot water storage type water heater comprising a tank provided with a hot water supply section at an upper portion, a heating section at an intermediate lower portion, and an overpressure prevention section, and an outer case provided outside the tank, one end of the valve of the overpressure prevention section is provided. An object of the present invention is to provide a hot water storage type water heater characterized by comprising an operation unit attached to a body and having the other end arranged outside the outer case.

Further, the present invention provides a hot water storage type water heater characterized in that the operation section is a wire, a string or an operation rod.

Further, the present invention provides a hot water storage type water heater characterized in that the outer case of the present invention is provided with a holding portion for holding an operation portion.

Further, the present invention provides a hot water storage type water heater characterized in that the holding portion is a hook and an engaging element.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the hot water storage type water heater according to the present invention will be described below with reference to the accompanying drawings.

Since the basic configuration of the hot water storage type water heater 50 of the present invention is the same as that of the conventional hot water storage type water heater 10, the same parts are denoted by the same reference numerals.

An overpressure preventing section 51 is provided on the outer wall of the tank 11 of the hot water storage type water heater 50 of the present invention. In the normal state, the overpressure preventing portion 51 is provided with a valve body 52 as shown in FIGS.
Is pressed against the valve seat 31 by the spring force of the spring 33, and in an abnormal state, the valve body 52 is detached from the valve seat 31 against the spring force of the spring 33 as shown in FIG. It is designed to protect.

A wire 53 is connected to the valve body 52. The wire 53 includes a spring 33, a spring holding plate 54,
It is connected to a C ring 35, an L-shaped tube 55, and a holding ring 57 disposed outside an inspection door device 56 provided on the outer case 22.

A hole is formed in the center of the opening / closing door of the inspection door device 56, and a wire 53 is inserted into the hole so that the holding ring 5 is opened.
It is tied to 7.

The holding ring 57 is provided on the outer case 2 if necessary.
The hook 2 is hooked and locked by a hook (not shown) attached to the hook 2.

Reference numeral 58 denotes a door attached to the lower part of the outer case 22.
A bucket 59 is arranged below the drain pipe 36 taken out.

When the hot-water storage type water heater 50 having such a configuration receives a disaster such as an earthquake and becomes unable to supply water or supply hot water, a user who is a disaster victim temporarily receives the supply of stored water from the tank 11. explain.

First, the user opens the door 58, takes out the water pipe 36 outside the outer case 22, and places the bucket 59 below the water pipe 36. Next, when the user grips the holding ring 57 and pulls it outward, the valve body 52 resists the spring force of the spring 33 via the wire 53 in the overpressure preventing portion from the state shown in FIG. The valve body 52 is forcibly separated from the valve seat 31 in the state shown in FIG.

As a result, the tank 11, the overpressure prevention unit 5
1. The water stored in the tank is guided to a bucket 59 via a water pipe 36 to supply water.

When the water supply becomes unnecessary, when the holding ring 57 is released, the valve body 52 is changed from the state shown in FIG. 4 to the state shown in FIG. 3 by the spring force of the spring 33, and the valve body 52 is pressed against the valve seat 31 to supply water. stop.

When water is supplied continuously, when the holding ring 57 is pulled, the holding ring 57 is hooked on a hook so that the wire 53 keeps the valve body 52 separated from the valve seat 31 to keep the water inside the tank. The stored water is continuously supplied to the bucket 59.

FIGS. 5, 6 and 7 show a rotary lid 60 which is an improvement of the inspection door device 56 shown in FIGS.

The rotating lid 60 is provided at its base end with the outer case 2.
A pivot shaft 62 pivotally attached to the second pivot portion 61 is provided. A cross hole 63 having a long hole and a short hole larger than the outer diameter of the holding ring 57 is formed in a central portion thereof, and a distal end portion thereof is formed. Engagement groove 64
Opening and closing lid 65 provided with the outer case 22 at the base end.
And a hook plate 69 provided with an engaging portion 68 at the tip thereof for engaging with the engaging groove 64.

The rotating lid 60 is normally closed with an opening / closing lid 65 superimposed on a hook plate 69 as shown by a solid line.

When the user receives water, the holding ring 57 is used.
To the outside of the outer case 22 and the valve body 52 to the valve seat 31.
Can be forcibly pulled away from it. To stop the water supply, the holding ring 57 may be released.

In the case where water is supplied continuously, the opening / closing lid 65 is opened together with the holding ring 57 to the position indicated by the dotted line, and the engaging portion 68 of the hook plate 69 is engaged with the engaging groove 64 of the opening / closing lid 65. The wire 53 separates the valve body 53 from the valve seat 31 and can supply water continuously. At this time, if the holding ring 57 is placed in the short hole of the cross hole 63, the holding ring 57 can accurately maintain the holding state. When the lid 65 is opened and the pressure prevention unit 51 or the like is inspected from outside, the wire 5
The retaining ring 57 of No. 3 is aligned with the long hole of the cross hole 63, the retaining ring 57 is removed, and the lid 65 is opened.

In the above embodiment, the wire 53 is used for opening and closing the valve body 52. However, the object of the present invention can be similarly achieved by using a wire, an operating rod or the like.

Further, the inspection door device 56 and the rotating lid portion 60 may be made transparent so that the use state of the overpressure prevention portion 51 and the like can be monitored.

[0039]

According to the present invention, a water supply section is provided at a lower portion, and a hot water supply section is provided at an upper portion.
In a hot water storage type water heater comprising a tank provided with a heating section and an overpressure prevention section at an intermediate lower portion, and an outer case provided outside the tank, one end is attached to a valve body of the overpressure prevention section, Since the end is equipped with an operation unit arranged outside the outer case, water supply,
In the event of a disaster such as an earthquake where hot water supply is stopped, the user can easily receive water simply by pulling the operation section of the overpressure prevention section.

Further, since only the operation part of the water tap protrudes from the outer case, it does not become a hindrance in a normal use state.

Further, an emergency water tap can be provided with a simple configuration by merely providing an operation section to an existing overpressure prevention valve.

The operating section of the present invention is not only easy to obtain because it is a wire, a string, or an operating rod, but also simple and does not increase the cost.

Further, since the outer case of the present invention is provided with the holding portion for holding the operation portion, water can be continuously supplied.

Further, since the holding portion of the present invention is a hook and an engaging element, it is convenient for engaging the holding ring.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of a hot water storage type water heater of the present invention.

FIG. 2 is an explanatory diagram showing a main part of FIG.

FIG. 3 is an explanatory view showing the operation of one of the overpressure prevention units in FIGS. 1 and 2 in a sectional view.

FIG. 4 is an explanatory view showing a cross-sectional view of another operation of the overpressure prevention unit in FIGS. 1 and 2;

FIG. 5 is a sectional view showing another example of the open / close lid shown in FIGS. 1 and 2;

FIG. 6 is a plan view showing a main part of FIG. 5;

FIG. 7 is a plan view showing another main part of FIG. 5;

FIG. 8 is a block diagram showing an outline of a conventional hot water storage type water heater.

FIG. 9 is an explanatory diagram showing a main part of FIG. 8 in an enlarged sectional view.

FIG. 10 is an explanatory view showing a cross-sectional view of the operation of one of the overpressure prevention units in FIGS. 8 and 9;

[Explanation of symbols]

 10, 50 Hot water storage type water heater 11 Tank 14 Water supply pipe 17 Hot water supply pipe 18 Heater 19, 51 Overpressure prevention part 22 Outer case 31 Valve seat 32, 52 Valve body 33 Spring 34, 54 Spring holding plate 36, 55 L-shaped pipe 37 Drain pipe 39 Opening / closing lid 53 Wire 56 Inspection door device 57 Holding ring 58 Door 59 Bucket 60 Rotating lid 69 Hook plate

Claims (4)

[Claims] 1. A hot water storage type water heater comprising: a tank provided with a water supply section at a lower portion, a hot water supply section at an upper portion, a heating section and an overpressure prevention section at an intermediate lower portion, and an outer case provided outside the tank. 3. The hot water storage type water heater according to claim 1, further comprising an operation unit having one end attached to the valve body of the overpressure prevention unit and the other end arranged outside the outer case. 2. The hot water storage type water heater according to claim 1, wherein the operation unit is a wire, a string, or an operation rod. 3. The hot water storage type water heater according to claim 1, wherein the outer case is provided with a holding portion for holding the operation portion. 4. The hot water storage type water heater according to claim 1, wherein the holding portion is a hook or an engaging element.