JP2865633B2 - Solar water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar water heater that heats stored water using solar heat and uses the water to supply hot water to a bathroom.

[0002]

2. Description of the Related Art A conventional solar water heater is shown in FIG.
A heat collector 2 and a water reservoir 3 for collecting solar heat are installed on tiles or the like of the roof 1 and both are connected by a cold water pipe 4 and a hot water pipe 5, and the water reservoir 3 is circulated by circulation of water (hot water) heated by solar heat. The temperature of the water is raised. Then, the hot water passes through the hot water supply pipe 6 and is used for hot water supply to a bathroom or the like. Water is supplied to the water reservoir 3 from the water supply pipe 7 via the ball tap 8.

[0003]

However, the above structure has a drawback that the heat collector 2 and the water reservoir 3 are often installed above the roof on the south side of the building, which significantly impairs the appearance of the roof. Was. In addition, the total weight of the solar water heater is more than 300 kg, and the weight burden of the building is large, the weight is concentrated only on the weak part of the roof, the roof is deformed, and reinforcement is necessary. It becomes a problem in strength.

[0004] In view of the above, an object of the present invention is to provide a solar water heater that does not impair the aesthetics of the roof and does not pose a problem in strength for buildings. Furthermore, since the water stored on the roof is used only for hot water supply, it is another object of the present invention to provide a solar water heater that can effectively use this water.

[0005] The means for solving the problem according to the present invention is a hot water container.
Is connected between a hot water tank to which a water supply pipe and a hot water supply pipe are connected to store water heated using solar heat.
It consists of a translucent protective cover that covers with a gap, or a hot water container is integrated with the solar heat collector and the heat collector.
Water reservoir with a water supply pipe and a hot water supply pipe connected
And a translucent cover that covers the collector and reservoir with a gap.
And a hot water container on the roof ridge.
A frame for installation in the opening is provided, and the frame
Is attached to the purlin so as to cover the opening of the
The top of the roof is overlaid on the roof tile .

[0006] According to this, since the hot water container is installed in a ridge with a sturdy roof, there is no problem in the strength of the building.
Further, the hot water container is arranged along the shape of the roof, does not protrude from the roof, and does not impair the aesthetic appearance of the roof.

[0007] Further, the solar water heater of the above means for solving the above problems has a water discharging means for discharging water stored in a hot water container;
Fire detection means for detecting a fire is provided, and when the fire detection means detects a fire, the water in the hot water container is released by the water discharging means to extinguish the fire. it can.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) As shown in FIG. 1, the solar water heater of the present embodiment includes a hot water container 10 for storing water heated by using solar heat.
2 installed. Building 12 is the roof 11 of the building
The best part of this is a thick and sturdy beam or purlin 12
a, the purlin 12a is supported by a bundle of pillars or rafters combined in a palm-shape manner, and can sufficiently withstand a large load. Is attached to the upper surface of this purlin 12a.

As shown in FIG. 2 to FIG. 4, the hot water container 10 stores water and heats the water with solar heat. And a protective cover 14 that protects from

The hot water tank 13 is a closed container having a capacity of 250 liters formed of stainless steel and having a semicircular cross section so that there is no leakage when water is stored inside. Furthermore, the surface is coated with black to enhance the heat absorption of solar heat when sunlight is irradiated on the surface. The side wall 13a has a water supply pipe 16 serving as a flowing water channel when supplying water from the water pipe 15, and a water (hot water) stored in the hot water tank 13 and supplied to the bathroom or the like. A hot water supply pipe 17 serving as a flowing water channel is connected.

Further, at one end of the hot water tank 13, a protruding portion 18 protruding upward is formed, and a ball tap 19 for maintaining a constant water level is provided in a space inside the protruding portion 18. The ball tap 19 is connected to the water supply pipe 16. When the water level drops, the valve is opened to supply water into the hot water tank 13, and when the water level reaches the set water level, the valve is closed to stop supplying water. At this time, the set water level is set so that the hot water tank 13 except for the protruding portion 18 is filled with water without a gap, that is, set to a height reaching the space in the protruding portion 18.
Therefore, the solar heat absorbed through the hot water tank 13 is easily transmitted to the water, and the heat collection efficiency is improved.

A water supply manual valve 20 is interposed between the water pipe 15 and the water supply pipe 16 to stop water supply from the water pipe 15 (for example, when the hot water tank 13 is repaired or the hot water tank 13 is repaired). When the solar water heater itself is not required), the water supply can be stopped by closing the water supply manual valve 20.
A hot water supply manual valve (hot water supply faucet) 21 is also connected to the end of the hot water supply pipe 17. When the hot water supply manual valve 21 is opened in hot water supply in a bathroom or the like, the hot water tank 1 is opened.
The hot water in 3 is supplied through a hot water supply pipe 17. The hot water tank 13 may be made of aluminum, glass, or plastic. In FIG. 2, reference numeral 22 denotes an air vent for evacuating the air in the hot water tank 13, and the
The pressure inside 3 is prevented from rising.

The protective cover 14 is formed in a reverse U-shaped cross section so as to cover the hot water tank 13 with translucent tempered glass or reinforced plastic.

The hot water tank 13 is installed via a heat insulating material 24 on a frame 23 attached to the upper surface of the purlin 12a of the roof 11 with nails or bolts and nuts. A protective cover 14 is engaged with the frame 23 at intervals so as to cover the hot water tank 13 and installed.
Further, caps 25 made of reinforced plastic are attached to both ends of the protective cover 14, and by closing the both ends, intrusion of rain, dust, and the like into the hot water container 10 is prevented.

The frame 23 is formed by bending a rust-proof metal plate, and includes an installation portion 23a in which the hot water tank 13 is installed and a flange portion 23b bent at an angle corresponding to the inclination of the roof 11. Have. The opening formed in the ridge 12 when the hot water container 10 is attached to the roof 11 is closed to prevent rain from entering the roof 11. When the frame 23 is installed on the purlin 12a, the end of the flange portion 23b overlaps the uppermost tile 11a of the roof 11. The frame 23 may be formed by welding the respective parts 23a and 23b by welding, or may be formed of plastic.

The heat insulating material 24 is, for example, glass wool or styrofoam, and is provided so as to prevent heat of hot water from escaping downward. By the way, the water supply pipe 16 and the hot water supply pipe 17 are not piped on the roof so as not to impair the aesthetics of the building, but penetrate the installation part 23a of the frame 23 and are piped through the ceiling. . In addition, in FIG. 3, 26 is a bundle, 27 is a main building, and 28 is a field.

The solar water heater is provided with a water discharging means for discharging stored water and a fire detecting means for detecting a fire. When the fire detecting means detects a fire, In order to extinguish the fire, the water in the hot water tank 13 of the hot water container 10 is discharged by the water discharging means.

The water discharging means includes a plurality of water discharging pipes 29 connected to the bottom of the hot water tank 13 and each of the water discharging pipes 2.
9, a shower head 30 having a large number of holes formed therein, and a solenoid valve 3 interposed between the water discharge pipe 29 and the shower head 30 for opening and closing a flow passage of discharged water.
It consists of 1. The fire detecting means is a fire sensor 32 such as a heat detector or a smoke detector provided in the building.
The water discharge pipe 29 is piped from the bottom surface of the hot water tank 13 to the lower rooms and the like through the frame 23,
The shower head 30 is attached to the tip.

The solenoid valve 31 and the fire sensor 32 are electrically connected to a fire control panel 33, and the fire sensor 32
When a fire is detected, a signal to notify the fire is sent to the fire control panel 33. Then, upon receiving this signal, the fire control panel 33 recognizes that a fire has occurred, and
And the solenoid valve 31 is opened. Thereby, roof 1
The water in the hot water tank 13 installed in one ridge 12 and located above a building or the like is discharged from the shower head 30 installed below by its own weight.

The fire detecting means may be a fire alarm device for notifying a fire when a person presses a switch or the like. Further, a sprinkler head that detects the rise in the temperature of the water discharge pipe 29 by a fusible part in the inside and melts the same to discharge the water in the pipe may be attached. According to this, the solenoid valve 3
1. The fire sensor 32 and the fire control panel 33 are not required, and the equipment is inexpensive. It is also effective when there is a possibility that the power of the fire sensor 32 and the solenoid valve 31 may be stopped due to a power failure.

In the above configuration, first, the water supply manual valve 2
When 0 is opened, water is supplied from the water pipe 15 to the hot water tank 13 through the water supply pipe 16 by water pressure. When the water in the hot water tank 13 reaches the set water level, the valve of the ball tap 19 is closed, and the supply of water is stopped. When the sunlight irradiates the hot water container 10, the light passes through the protective cover 14 and irradiates the surface of the hot water tank 13. Then, the solar heat is absorbed by the hot water tank 13, the heat is transmitted to the inside, and the temperature of the water is raised. At this time, the sun irradiation angle changes with time. However, since the hot water container 10 is attached to the ridge 12 at the highest position of the roof 11, sunlight is blocked by an obstacle, and the hot water container 1
There is no such thing as not being irradiated to 0. Therefore, sunlight can be incident during the day.

Then, when hot water is required in a bathroom or the like,
When the hot water supply manual valve 21 is opened, the heated water in the hot water tank 13 is supplied to the outside through the hot water supply pipe 17.
At this time, when the water level of the hot water tank 13 falls, the valve of the ball tap 19 is opened, and water is supplied into the hot water tank 13 to the set water level.

When a fire occurs in the building and the fire is detected by the fire sensor 32, the fire control panel 33 recognizes the fire and opens the solenoid valve 31 to extinguish the fire. By discharging the water in the tank 13 from the shower head 30, fire extinguishing or fire spread can be prevented. At this time, if the shower head 30, the solenoid valve 31, and the fire sensor 32 are individually provided in each room partitioned by a partition wall or the like, water discharge can be controlled in each room, and waste water can be used. You don't have to.

As described above, since the hot water container 10 is installed on the upper surface of the sturdy ridge 12a of the roof 11, there is no problem in the strength of the building. Furthermore, the appearance conforms to the shape of the roof 11 without abnormally protruding from the roof 11, and does not impair the aesthetic appearance of the roof 11. Further, there is no obstacle to the irradiation of the sunlight, the irradiation time of the sunlight is lengthened, and the solar heat collection efficiency is good.

When a fire occurs, a fire sensor 3
2, the water in the hot water tank 13 is detected and discharged from the shower head 30, so that the fire in the hot water tank 13 can be extinguished quickly and the water can be used for purposes other than hot water supply. In addition, even if the supply of tap water flowing in the water pipe is stopped or the water pressure is reduced due to the rupture of the water pipe, etc., the hot water container 10 is installed above the building. The water pressure required to release the water in the room is maintained, and fire can be extinguished.

(Second Embodiment) As shown in FIGS. 5 and 6 , a solar water heater according to a second embodiment has a heat collector 40 for collecting solar heat and a water reservoir for storing water heated by the heat collector 40. A hot water container 42 integrated with a vessel 41 is installed in the ridge 12 of the roof 11. This hot water container 42 is installed on the frame 23 attached along the upper surface of the purlin 12a as in the first embodiment.

The water reservoir 41 is a stainless steel hermetic container having a semicircular cross section. In order to prevent the heat in the water reservoir 41 from being released to the outside, a heat insulating material 43 is provided around the water reservoir.
(For example, glass wool, styrene foam, etc.). The water reservoir 41 has a water supply pipe 16 connected to a side wall 41 a thereof in the same manner as the hot water tank 13 of the first embodiment, and a ball tap 19 connected to the tip of the water supply pipe 16. Is supplied with water, and the water is maintained at the set water level. The hot water supply pipe 17 for supplying hot water in the water reservoir 41 to the bathroom or the like is provided on the side wall 41.
a.

The heat collector 40 is composed of five stainless steel cylinders, one end of which is closed, and the surface of which is coated with black to increase the efficiency of heat absorption by sunlight. The upper end of the heat collector 40 is connected to the lower part of the side wall 41 b of the water reservoir 41 by welding or the like, and the lower end of the heat collector 40 is located lower than the bottom surface of the water reservoir 41. Then, below the heat collector 40, a reflecting plate 44 that reflects sunlight is disposed.

The material of the heat collector 40 may be aluminum, glass or plastic, and its shape may be a polygonal column. Further, the number of heat collectors 40 is not limited to five. In this way, the heat collector 40 and the water reservoir 41 are covered with the protective cover 14 and integrated, and are installed on the purlin 12 a of the roof 11. Other configurations and members are the same as those of the first embodiment.

In the above configuration, water is supplied from the water supply pipe 16 to the water reservoir 41, and the water level is kept constant by the ball tap 19. At this time, the water supplied to the water reservoir 41 also flows into the heat collector 40 and is filled. Then, when the sunlight passing through the protective cover 14 irradiates the heat collector 40, the heat of the sunlight is absorbed, the heat is transmitted to the filled water, and the temperature of the water rises. At this time, the sunlight passing between the heat collectors 40 is reflected by the reflection plate 44 and is irradiated to the lower side of the heat collectors 40. That is, the entire surface of the heat collector 40 is irradiated with sunlight, and heat is efficiently absorbed in the heat collector 40.

The water warmed in the heat collector 40 moves upward along the slope of the heat collector 40 by convection and moves to the water reservoir 41.
And the cold water at the bottom of the water reservoir 41
Move down to zero. Therefore, inside the water reservoir 41, the water whose temperature has been raised gathers at the upper part. Then, the heat of the water is maintained by the heat insulating material 43. The operation at the time of fire is the same as that of the first embodiment, and the description is omitted.

As described above, even if the hot water container 42 in which the heat collector 40 for collecting the solar heat and the water reservoir 41 for storing the water heated by the heat collector 40 are installed in the ridge 12 of the roof 11, The same effect as that of the embodiment can be obtained.
Moreover, by arranging the reflection plate 44, the entire surface of the heat collector 40 is irradiated with sunlight, and the heat efficiency is very good. Moreover, since the water reservoir 41 in which the water heated by the convection gathers is covered with the heat insulating material 43, the hot water can be held for a long time.

Incidentally, a plurality of exit buildings 50 shown in FIG.
In the building where is formed, the hot water container 10 may be installed in each of the descending ridges 50, respectively. In this case, the ball tap 19 is provided on the inclined upper side of the hot water tank 13.
Furthermore, if a tank for storing hot water is provided at the top 51 and connected to the hot water tank or the water reservoir of the hot water container 10 by piping, the water storage capacity can be increased, and the tank is located higher than the hot water container 10. Since the warm water flows into the tank, the efficiency of hot water supply from the tank is improved.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention. For example, in order to keep the water level in the hot water tank constant, the start and stop of water supply are controlled by an electromagnetic valve using a sensor (liquid level detection sensor, such as a float switch) that electrically detects the water level instead of a ball tap. You may do it.

Further, when the television or radio wire antenna 60 is disposed inside the protective cover 14 as shown in FIG. 8, it is not necessary to provide an antenna having elements and the like, so that the appearance of the roof is not spoiled. In the drawing, 61 is a power supply terminal, and 62 is an antenna cable.

[0036]

As is apparent from the above description, according to the present invention, when a hot water container for storing water heated using solar heat is provided and the hot water container is installed in a roof ridge, the roof has excellent strength. The heavy objects are supported in place, and the strength problem of the building is eliminated. Therefore, stable installation is possible for a long time. In addition, by installing the hot water container in the ridge, it is possible to conform to the shape of the roof, so that it does not protrude from the roof and does not impair the aesthetic appearance. further,
There is nothing that hinders the irradiation of sunlight, the irradiation time of sunlight is long, and the heat collection efficiency of solar heat is good.

The same effect as described above can also be obtained by installing a hot water container in which a heat collector for collecting solar heat and a water reservoir for storing heated water are integrated in a roof ridge. .

Further, by providing the water discharging means for discharging the water stored in the hot water container and the fire detecting means for detecting the fire, the water in the hot water container is discharged, so that the fire can be quickly extinguished. In addition, even if the supply of tap water flowing through the water pipe is stopped or the water pressure drops due to the rupture of the water pipe, etc., the hot water container is installed above the building, so the water inside the hot water container is The water pressure required for water release is maintained, and fire can be extinguished.

As described above, the solar water heater of the present invention
It does not impair the aesthetics of the roof and does not pose a problem in the strength of the building. In addition, the water stored on the roof can be used not only for hot water supply but also for fire extinguishing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a building equipped with a solar water heater according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the same hot water container.

FIG. 3 is a cross-sectional view showing a mounting state of the solar water heater.

FIG. 4 is a diagram showing the overall configuration of the solar water heater.

FIG. 5 is a sectional view of a hot water container according to a second embodiment.

FIGS. 6A and 6B are views showing a heat collector and a water reservoir, wherein FIG. 6A is a plan view and FIG.

FIG. 7 is a perspective view of a building to which a solar water heater according to another embodiment is attached.

FIG. 8 is a view showing a protective cover according to another embodiment;
(A) is a front view, (b) a side view

FIG. 9 shows a conventional solar water heater, wherein (a) is a front view and (b) is a plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Hot water container 11 Roof 12 Building 12a Purlin 13 Hot water tank 14 Protective cover 29 Water discharge pipe 30 Shower head 31 Water discharge solenoid valve 32 Fire sensor 33 Fire control board 40 Heat collector 41 Water reservoir

Claims (3)

(57) [Claims] A hot water tank connected to a water supply pipe and a hot water supply pipe for storing water heated using solar heat;
The transparent protective cover that covers the tank with a gap
An opening formed in the roof ridge
There is provided a frame for installation, the frame,
Attached to the purlin so as to close the opening of the ridge,
A solar water heater characterized in that the ends of the frames are overlapped on the roof tiles . 2. A heat collector for collecting solar heat, and one of the heat collectors
Water reservoir with integrated water supply pipe and hot water supply pipe
And a translucent material covering the heat collector and the water reservoir with a gap therebetween.
The hot water container is made up of the protective cover and the hot water container.
A frame was set up for installation in the opening formed in the root ridge.
The frame is attached to the purlin so as to close the opening of the ridge.
And the end of the frame overlaps the roof tiles
A solar water heater characterized by being performed. 3. A water discharging means for discharging water stored in the hot water container and a fire detecting means for detecting a fire are provided. When the fire detecting means detects a fire, the fire is extinguished. 3. The solar water heater according to claim 1, wherein the water in the hot water container is discharged by the water discharging means.