JPH09111813A - Rainwater utilization system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the energy in distributing water and to enhance the efficiency of purifying water. SOLUTION: Gutters 14 are provided over the wall surface 12 of a multistoried building 10 so that rainwater beating the wall surface 12 from sideways and flowing down the wall surface 12 is collected before flowing down to the ground. The collected rainwater is stored in a storage tank 20 and then distributed to each house via a distributing pipe by means of gravity. Therefore, the water needs not to be pumped up and distributed as in conventional cases, so the energy required for pumping up the water can be reduced. Also, since the rainwater is collected high above, dust, etc., on road surfaces is not mixed into the water, with the result that rainwater of good quality can be utilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainwater utilization device for effectively utilizing rainwater.

[0002]

2. Description of the Related Art In order to make effective use of water, there is a method of collecting rainwater on the roof of a building or aboveground into an underground rainwater storage tank, purifying it, and then pumping it up for use as miscellaneous water. Has been taken.

However, the above method requires a large amount of energy because it is necessary to pump water and distribute it to the users on the upper floors. Moreover, since the rain on the ground is mixed with earth and sand on the road surface, dust purification efficiency is not very good.

[0004]

SUMMARY OF THE INVENTION In consideration of the facts described above, an object of the present invention is to provide a rainwater utilization apparatus which can save energy during water distribution and can improve water purification efficiency.

[0005]

In the rainwater utilizing apparatus according to the first aspect of the present invention, the water collecting means is provided on the side wall surface of the structure, and the rain water that hits the side wall surface in the lateral direction and flows down the side wall surface is provided. It reduces scattering at the top and effectively collects water before it flows to the ground.

The collected rainwater is stored in the storage means,
Water is distributed to each user by using water distribution means. Therefore, it is not necessary to pump up and distribute water as in the conventional case, so that energy for pumping can be saved. Moreover, since rainwater is collected above, rainwater with good water quality can be used without mixing dirt and dust on the road surface.

In the rainwater utilizing apparatus according to the second aspect, the gutter is arranged around the side wall surface, and the rainwater flowing down the side wall surface can be collected with a simple mechanism.

In the rainwater utilizing device according to the third aspect, the drainer is formed along the vertical direction of the side wall surface, and the rainwater flowing down the side wall surface is efficiently guided to the trough without being scattered.

In the rainwater utilization apparatus according to the fourth aspect, the water purification means for purifying the rainwater stored in the storage means is provided, and it can be used not as miscellaneous water but as drinking water depending on the degree of water purification. Further, since the quality of rainwater is originally good, water purification treatment is easy, and maintenance of water purification means can be easily performed.

In the rainwater utilizing apparatus according to the fifth aspect, the rainwater is guided to the storage means by the water guiding means. Therefore, it is possible to maximize the amount of rainwater that falls around the structure.

[0011]

1 and 2 show a high-rise building 10 equipped with a rainwater utilization device according to this embodiment.
The side wall 12 of this high-rise building 10 has a gutter 1 along its outer periphery.
Four orbiting.

The gutter 14 is a water collecting pipe 1 connected to the bottom wall.
It has a downward slope toward 6, and rain hitting the side wall surface 12 from the lateral direction flows down to the gutter 14 and flows through the gutter 14 into the water collecting pipe 16.

A drainer 18 is formed on the side wall 12 along the vertical direction so that rainwater flowing down the side wall 12 can be efficiently guided to the gutter 14.

On the other hand, the rainwater flowing into the water collecting pipe 16 flows down by gravity and is stored in a storage tank 20 arranged on a floor below the gutter 14. In this storage tank 20, contaminants are settled, and the rainwater filtered by the screen 22 overflows and flows into the miscellaneous water tank 24.

In the miscellaneous water tank 24, the pH is adjusted according to the water quality.
Is adjusted, and the treated water naturally drops to the water pipe 26 extending downward. The water pipe 26 is provided with a valve 28 for each floor, and is used, for example, as miscellaneous water such as toilet wash water at appropriate times. In this way, by collecting the rainwater that hits the side wall surface 12 before flowing to the ground, it is possible to use rainwater with good water quality without mixing dust and the like. In addition, since the quality of rainwater is originally good, water purification treatment is easy, and maintenance of the water purification device can be easily performed. Furthermore, since water is distributed using gravity, energy saving can be achieved. In addition,
If necessary, sodium hypochlorite is injected from the injection device 30 into the water flowing down the water distribution pipe 26. Further, the water flowing down from the upper water distribution pipe 26 flows into the miscellaneous water tank 24 through the drain pipe 32, and is again flowed to the lower water distribution pipe 26.

On the other hand, a water collecting port 34 is provided at the center of the roof 32 of the high-rise building 10. The roof 32 has a downward slope toward the water collecting port 34. Further, a water collecting pipe 36 is connected to the water collecting port 34 so that the rainwater that has fallen on the rooftop 32 will naturally flow down to the storage tank 20. By collecting the rainwater that has fallen on the roof 32 in this manner, the rainwater that has fallen around the high-rise building 10 can be collected to the maximum extent.

A storage tank (not shown) is also provided in the basement of the high-rise building 10 to store rainwater collected by the gutter 14 arranged at the lowest position. The water stored in this storage tank is pumped up to the nearest miscellaneous water tank 24. In this way, since the rainwater alone is pumped by hitting the side wall surface 12 between the upper and lower gutters 14,
Does not require much energy.

Further, the lowermost gutter 14 is constructed to collect rainwater hitting the side wall surface 12 so that dust and the like on the road surface will not be mixed, so that rainwater of good water quality can be used. it can.

Next, an example in which the rainwater utilization apparatus according to this embodiment is applied to various high-rise buildings having different outer shapes will be described.

The high-rise building 40 shown in FIG. 3 has a quadrangular pyramid shape, and the width of the side wall surface 12 gradually increases as it goes downward. That is, in the high-rise building 40 having such an outer shape, the ratio of the water collecting area occupied by the rooftop 42 is smaller than that of the square-column-shaped high-rise building, so it is particularly important to collect rainwater that hits the side wall surface 12. Is coming.

The high-rise building 44 shown in FIG. 4 has a structure in which square pillar-shaped blocks having different sizes are stacked, and the step surface 46 functions as a trough for collecting water. .

Further, the skyscraper 48 shown in FIG. 5 has a core 50 arranged at four corners and a sky terminal 52 as a huge beam supported by the core 50. The sky terminal 52 integrates the four cores 50 and serves as a central plaza. Dwelling unit 5 between the core 50
1 is provided, and the gutter 14 is also provided below the dwelling unit 51. The rainwater collected in the gutter 14 is guided to the core 50.

Further, at the upper edge of the sky terminal 52,
The gutter 14 is circulated to collect rainwater that hits the side wall surface 12 of the core 50 facing the outside. Further, the rainwater that hits the inwardly facing side wall surface 12 of the core 50 is collected on the top surface 54 of the sky terminal 52. The top surface 54 of the sky terminal 52 has a downward slope toward the center, and a water collecting port (not shown) is provided in the center. In addition, the top surface 54 of the sky terminal 52
Rain that falls directly on the river will also be collected at the water intake.

The trough 14 is also circulated around the bottom of the core 50 so as to collect rain that hits the core 50 below the sky terminal 52 at the bottom.

As described above, in the rainwater utilizing apparatus of the present invention,
Since it is only necessary to provide a water collecting means for collecting the rain hitting the side wall surface in the middle part, it can be easily installed regardless of the outer shape of the tall building.

In this embodiment, the drain 18 is formed on the side wall surface, but sufficient drainage capacity can be exhibited without the drain 18. Further, in the drawing, it seems that there is a step between the gutter 18 and the side wall surface, but it goes without saying that the water is formed so that the water flows smoothly from the side wall surface to the gutter 18.

[0027]

Since the present invention has the above-mentioned structure, the energy required for pumping water can be saved and the water purification efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a high-rise building equipped with a rainwater utilization device according to the present embodiment.

FIG. 2 is a block diagram showing a water distribution system of the rainwater utilization device according to the present embodiment.

FIG. 3 is a schematic diagram showing a state where the rainwater utilization device according to the present embodiment is applied to another high-rise building.

FIG. 4 is a schematic diagram showing a state where the rainwater utilization device according to the present embodiment is applied to another high-rise building.

FIG. 5 is a schematic view showing a state where the rainwater utilization device according to the present embodiment is applied to another high-rise building.

[Explanation of symbols]

 14 Gutter (water collection means) 18 Drainer 20 Storage tank (storage means, water purification means) 24 Miscellaneous water tank (storage means) 26 Water distribution pipe (water distribution means) 30 Injection device (water purification means) 34 Water inlet (water conveyance means) 36 Water collection pipe (Water transfer means)

Claims (5)

[Claims] 1. A water collecting means provided on a side wall surface of a structure for collecting rain hitting the side wall surface, a storage means for storing rain water collected by the water collecting means, and a storage means for storing the rain water. And a water distribution means for distributing the rainwater using gravity. 2. The rainwater utilization apparatus according to claim 1, wherein the water collecting means is a gutter which is wound around the side wall surface. 3. The rainwater utilization device according to claim 1, wherein a drainer for guiding rainwater to the water collecting means is formed along the vertical direction of the side wall surface. 4. The rainwater utilization device according to claim 1, further comprising a water purification means for purifying rainwater stored in the storage means. 5. The water guiding means provided on the upper wall surface of the structure for guiding rain falling on the upper wall surface to the storage means, according to any one of claims 1 to 4. The rainwater utilization device described.