JPH11241375A - Rain storage tank system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the rain retention capacity by splitting a dwelling roof, and arranging a plurality of rain storage tanks for each split roof a fill the rain storage tanks even when the amount of rain is small, to gradually penetrate the rain or flow it in a drain after the rain is used for water for daily life. SOLUTION: A dwelling roof is split into three roofs H, K and G, and a plurality of rain storage longitudinal tanks T1, T2... are arranged in parallel between eaves and the foundation. The storage tanks T1, T2 are two-continuous tanks arranged at high position, and the rain on the northern roof G is collected by a water collection gutter N and stored. The rain on the southern roof H collected by a water collection gutter E is stored in the storage tanks T3, T4, the rain on the southern roof K collected by a water collection gutter F is lowered once on the ground through a piping, and stored in a horizontal storage tank A provided on a part of a garage roof R by the principle of the U-tube due to the difference in the water storage level. In addition, rain is similarly supplied to the storage tank A from the rain storage tanks T1-T4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rainwater storage tank in an eco-life system that uses rainfall falling on all premises of a house for living water. In addition, rainwater that falls on the premises is stored once on the premises without being flushed to the sewage, and is used as domestic water, and then gradually penetrates into the ground or drains into the sewage to retain rainwater. It relates to technology for artificially increasing the ability.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a rainwater storage tank has been previously filed by the same applicant. However, the prior application does not disclose a specific piping system technology with respect to a plurality of types of rainwater storage tanks, nor does it disclose the configuration of flush water for a flush toilet or the structure of a water pump. is there. Also,
The rainwater that has fallen on the premises is temporarily stored on the premises without being drained to the sewage at once, and is used as domestic water and then gradually penetrates into the ground or drains into the sewage to improve the water retention capacity of the rainwater. It does not disclose any artificially increasing technology.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a plurality of rainwater storage tanks are arranged so that a large amount of rainwater can be stored as much as possible. Used to improve the water retention capacity as groundwater by infiltrating into the ground on the premises, recharge groundwater, revive spring water, prevent heat islands, and preserve green landscapes through the growth of appreciable vegetation It is possible. In addition, since the roof has a wide range, such as facing south and north, it may not be possible to collect rainwater from all the roofs with one tank. A rainwater storage tank is provided, the roof is divided into several parts for each surface, and each is guided to another rainwater storage tank for storage.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In claim 1, a roof of a house is divided, and a plurality of rainwater storage tanks for storing rainwater are arranged for each roof. The vertical rainwater storage tank according to claim 2, wherein the plurality of rainwater storage tanks are vertically arranged between the eaves of the house and the foundation ground to collect and store rainwater from a water collection gutter on a roof. And a horizontal rainwater storage tank that collects water from a water collection gutter on the roof and guides and stores rainwater by piping. In the third aspect, when a rainwater storage tank for storing rainwater falling on the roof of a house is provided, and the rainwater in the rainwater storage tank is used as the flush water for the flush toilet, the flush water for the flush toilet disposed on the second floor is provided. The pump is provided with a water pump. According to a fourth aspect of the present invention, in the rainwater storage tank, the flush water to the flush toilet on the first floor is supplied by natural fall due to a difference in head of the tank.

[0005]

Next, an embodiment of the present invention will be described. FIG. 1 is an overhead view of an eco-life system house in which a plurality of rainwater storage tanks are arranged, FIG. 2 is a conceptual diagram showing a rainwater flow path of an eco-life system house that effectively uses all rainwater falling on the site, and FIG. Vertical rainwater storage tank T1 ・ T
FIG. 4 is a front cross-sectional view showing a portion of the communication pipe 18, FIG. 5 is a plan cross-sectional view, FIG. 6 is a right side view, FIG. 7 is a left side view, and FIG. FIG. 9 is a perspective view showing an embodiment of a horizontal rainwater storage tank A, and FIG. 9 is a partial cross-sectional view showing a state where a strainer 62 is attached to the rainwater extraction pipe 12.

Referring to FIGS. 1 and 2, an eco-life system house in which all of the rainwater falling on the premises is effectively used will be described. In addition, rainwater that falls on the premises is temporarily stored on the premises without being drained to the sewage at once, used as domestic water, and then gradually penetrates into the ground or drains into the sewage to retain rainwater. A technique for artificially increasing the capacity will be described. The roof of the house is divided into 3 and the roof HK
・ G is provided with three collecting gutters EFN. Vertical rainwater storage tanks T1, T2,... Arranged vertically in the eaves of the roof of the house and the foundation ground, and a plurality of the rainwater storage tanks T1, T2,. doing.

The vertical rainwater storage tanks T1 and T2 are
It is constituted by a double tank arranged at a high level position, and is configured to collect and store rainwater falling on a roof G on the north side by a water collecting gutter N. The rainwater collected on the south side roof H collected by the drainage gutter E is supplied to the vertical rainwater storage tank T3.
・ The rainwater on the southern roof K collected in the drainage gutter F is temporarily lowered to the ground surface via piping, and the U-shape is formed by the difference in the water storage level. According to the principle of the pipe, water is injected so as to be directly stored in a horizontal rainwater storage tank A provided on the garage roof R. In addition, the vertical rainwater storage tank T1.
Also from T2, T3, T4, it is configured to supply the rainwater stored on the horizontal rainwater storage tank A by the principle of a U-shaped pipe due to the difference in the storage level.

In order to store rainwater on the roof G on the north side in the vertical rainwater storage tanks T1 and T2, the rainwater storage tanks T1 and T2 are arranged on the north side of the house. Large windows are arranged in consideration of the sunshine, etc., and if the vertical rainwater storage tanks T1 and T2 are arranged there, there is a possibility of shading and obstructing solar radiation. The north side window is generally provided with a vertical small window in many cases, and the wall surface is wide. Therefore, the arrangement of the vertical rainwater storage tanks T1 and T2 and the water collecting gutter N is simple. Because it becomes. In addition, since the flush toilet C2 on the second floor is often arranged on the north side of the house, the vertical rainwater storage tank T1 is used to supply rainwater as flush water to the flush toilet C2 on the second floor. The effect of arranging T2 on the north side can be obtained. When the stored water in the vertical rainwater storage tanks T1 and T2 is exhausted, the flush water of the second-floor flush toilet C2 is pumped from the horizontal rainwater storage tank A or a buried low-position rainwater storage tank B described later. It is also possible to supply water by pumping. The rainwater stored in the vertical rainwater storage tanks T1, T2, T3, and T4 is supplied as flush water to a flush toilet on the first floor,
3, it is possible to supply plants growing on the roof balcony V on the second floor.

In addition to storing rainwater in the vertical rainwater storage tanks T1, T2,..., Rainwater can also be stored in the horizontal rainwater storage tank A provided in the pergola portion supporting the garage roof R. . The horizontal rainwater storage tank A is
It is configured so as to utilize the space of the garage, and has a height that does not affect the solar radiation of the neighboring house as a height below the limit of the adjacent land boundary work. Further, the horizontal rainwater storage tank A is formed in a horizontally long shape so as not to extend upward. The rainwater stored in the horizontal rainwater storage tank A is configured to be supplied as flush water for the flush toilet C1 on the first floor.

A solar cell D is disposed on the garage roof R, and a fountain pump P2 disposed in a reservoir L or a buried rainwater storage tank B, which will be described later, is provided by electric power obtained from the solar cell D. And a pump for pumping the rainwater collected from the horizontal rainwater storage tank A to the horizontal rainwater storage tank A, and a pump for pumping the rainwater stored in the horizontal rainwater storage tank A to the vertical rainwater storage tanks T1 and T2. And Also,
The solar cells D are also provided on the roof of a house with few shields or on the roof of the roof balcony V on the second floor in order to increase the power generation efficiency.

A buried rainwater storage tank B is buried in a semi-buried state on the southern site of the house, and rainwater can be stored inside the buried rainwater storage tank B. That is, the rainwater storage tank B of the buried type has rainwater overflowing from the horizontal rainwater storage tank A,
The rainwater that has penetrated from the upper surface of the buried rainwater storage tank B is stored. The relationship between the horizontal rainwater storage tank A and the buried rainwater storage tank B is substantially the same as the water level of the rainwater storage vessel Z disposed below the horizontal rainwater storage tank A and the water level of the buried rainwater storage tank B. At the same level, by disposing a pumping pump inside the rainwater storage container Z, the rainwater stored in the buried rainwater storage tank B and, consequently, the rainwater stored in the rainwater storage container Z can be transferred through the pump P1. It is configured so that water can be pumped into the rainwater storage tank A.

As described above, in an eco-life system house in which all of the rainwater falling on the premises is effectively used, the roof is divided into roofs H, K, and G, and the drainage gutters E, F are respectively provided.
N is provided to collect water in the vertical rainwater storage tanks T1, T2,... Disposed in the high, middle, and low positions, the horizontal rainwater storage tank A, and the buried rainwater storage tank B. It is. Also, vertical rainwater storage tanks T1, T2,.
Are installed under the eaves to increase rainwater storage. Storing rainwater from the roof surface has the advantage that it is possible to collect the cleanest rainwater in the premises and to use the clean stored rainwater.

FIG. 2 is a schematic diagram showing a rainwater flow path of an eco-life system house that effectively uses all of the rainwater falling on the premises. That is, the rainwater from the roof K is collected by the collecting gutter F, temporarily lowered to the ground or the ground, and then raised to the horizontal rainwater storage tank A having a level difference by the U-shaped pipe principle and stored. It is configured as follows. The rainwater from the roof G is collected in a water collection gutter N, and once poured into a vertical rainwater storage tank T1, and then filled into a communicating horizontal rainwater storage tank T2 based on the U-tube principle. Make up.

The vertical rainwater storage tanks T1 and T2 (T
The rainwater overflowing from 3.T4) can be supplied to the horizontal rainwater storage tank A. Also, the rainwater overflowing from the horizontal rainwater storage tank A can be supplied to the buried rainwater storage tank B. When the buried rainwater storage tank B is filled, the buried rainwater storage tank B flows down from the overflow pipe Y provided in the buried rainwater storage tank B to the reservoir L. The bottom of the reservoir L and the buried rainwater storage tank B
The bottom is connected to the on-off valve and the communication pipe by a communication pipe, so that the water can be supplied to the reservoir L from the buried rainwater storage tank B even at a low water level in addition to the inflow from the overflow pipe Y. Accordingly, the rainwater can be supplied from the buried rainwater storage tank B to the reservoir L even in summer when the evaporation from the reservoir L is severe.

The rainwater that overflows in the reservoir L is
Water is distributed to the rainwater underground infiltration pipe X formed by opening a hole in the pipe, and is penetrated from the groundwater infiltration pipe X into the ground in the site. The reservoir L
Is a pond in which freshwater fish, aquatic animals and aquatic plants can inhabit, and a fountain pump P2 is disposed inside so that the fountain is always (or sometimes) blown up. Also,
The buried rainwater storage tank B is a tank constructed in a semi-underground state on a residential site, and is a vertical rainwater storage tank T.
1 ・ T2 ・ ・ ・ In horizontal rainwater storage tank A,
It is configured to store overflowing rainwater.

The rainwater stored in the buried type rainwater storage tank B is used for washing flush toilets and the like in the vertical rainwater storage tanks T1, T2,... And the horizontal rainwater storage tank A. When the water runs out, the water is pumped and discharged by the water pump P1 and can be transferred to the horizontal rainwater storage tank A. Further, it can be transferred to vertical rainwater storage tanks T1, T2,. A rainwater storage container Z is disposed below the horizontal rainwater storage tank A, and the water level of the rainwater storage container Z is substantially the same as the water level of the buried rainwater storage tank B. . A pump P1 is disposed inside the rainwater storage container Z, and the pump P1 is driven by electric power from a solar cell D.

When the amount of water in the horizontal rainwater storage tank A decreases, if the water level of the buried rainwater storage tank B is within the range in which the rainwater storage container Z can be pumped, the water pump P
1 allows the rainwater stored in the buried rainwater storage tank B to be pumped to the horizontal rainwater storage tank A via the rainwater storage container Z. Also, a buried rainwater storage tank B
A manual or electric pump P3 is provided on the upper surface of the pump, and can be used for watering a peripheral planting or the like.

Although various nutrients and components flow into the reservoir L, when no tap water is supplied,
Hazardous components such as chlorine do not flow much. However, there is a possibility that the components flowing into the reservoir L become eutrophic, become anaerobic inside, and generate malignant gas. In order to avoid such a situation, a fountain is generated by the fountain pump P2, aeration and purification are performed, oxygen is absorbed in water to make it aerobic, and generation of ammonia gas and the like is suppressed.

The inside of the reservoir L gradually becomes eutrophic,
The overgrowth of aquatic plants creates an anaerobic condition,
In the reservoir L, aquatic animals such as fish, frogs, goats, and water sparrows are bred, and the eutrophic substances absorbed by the phytoplankton and the zooplankton are further absorbed by the aquatic animal. Leaving out of reservoir L avoids enhancing eutrophication. It is also a way to avoid eutrophication when fish are taken out by a heron, and yago becomes a dragonfly and flies, and a ladle goes out as a frog. The purpose of the deterrence will be achieved. In addition, eutrophic elements such as nitrogen and phosphorus can be removed by thinning and feeding aquatic plants such as water hyacinth which have proliferated due to eutrophication to a composting device W described later. That is, it is avoided.

It is also possible to supply the rainwater stored in the buried rainwater storage tank B or the horizontal rainwater storage tank A periodically to constitute a plant sanctuary U around the pond where plants are grown. The plant sanctuary U around the pond is in a state of no pesticides and no chemicals, and is capable of growing organisms living near the water such as frogs and dragonflies within an acceptable range. In addition, a compost device W is arranged adjacent to the pond surrounding plant sanctuary U. As described above, the compost device W is configured so that eutrophic aquatic plants such as water hyacinth and the like are thinned out, and the compost obtained by the compost device W can be supplied as nutrients for the sanctuary U around the pond. And

Further, it is also possible to construct a home garden S adjacent to the composting device W. Frogs, dragonflies, and the like are bred to an acceptable range and used as substitutes for pesticides, and can be used as substitutes for chemical fertilizers by introducing compost made by the composter W. As described above, the eco-life system house that encourages returning to nature can be configured by the plant sanctuary U around the pond and the home garden S.

The vertical rainwater storage tanks T1 and T2
..., when the horizontal rainwater storage tank A, the buried rainwater storage tank B, and the reservoir L are full, the rainwater infiltration masses M1 and M2 for infiltrating the overflow water into the basement of the site and the underground rainwater An infiltration pipe X is provided. The underground rainwater infiltration pipe X includes a buried rainwater storage tank B and a reservoir L.
Rainwater overflowing from the area and rainwater collected when the on-off valve is opened can penetrate into the basement of the site. The rainwater infiltration mass M1
In M2, in addition to the above-described role, the washing rainwater obtained when washing the vertical rainwater storage tanks T1 and T2 is configured to penetrate into the basement of the site. Also, as mentioned above,
From the vertical rainwater storage tanks T1, T2,... To the horizontal rainwater storage tank A, from the horizontal rainwater storage tank A to the buried rainwater storage tank B, from the buried rainwater storage tank B to the reservoir L. Further, the overflowing rainwater is configured to penetrate into the ground from the rainwater underground penetration pipe X to retain water. In addition, when there is no remaining power to penetrate into the ground, a configuration may be adopted in which drainage is drained to a drain for the first time.

Conventionally, most of rainwater is collected from a gutter through a rainwater trough, a rainwater pipe, or the like into a sewer, and then drained from the sewer into a river. Infiltration masses M1 and M2, rainwater infiltration into the underground with the underground infiltration pipe X, and the pavement in the site is also made of permeable pavement, so that rainwater can penetrate the underground as much as possible from the ground surface. It is configured to penetrate into the underground also from the reservoir L. In this way, by infiltrating rainwater into the underground, it is possible to prevent an increase in flooding caused by rainwater flowing straight from sewage to rivers, revive fresh water and spring water, recharge groundwater, and lead to global warming. It prevents heat islands and helps preserve the green landscape.

3 to 7, an embodiment of a multiple continuous rainwater storage tank will be described. 3, 4, 5, 6, and 7, a vertical double rainwater storage tank T
1 · T2 is shown. Vertical rainwater storage tank T1
T2 collects rain that has fallen on the roof G on the north side of the house with the water collecting gutter N, injects and stores the rainwater from the rainwater guiding gutter 1 into the vertical rainwater storage tank T1, and then stores the vertical rainwater Storage tank T2
And store it. A filtering filter 17 is disposed above the vertical rainwater storage tank T1 and between the rainwater guide gutter 1 and rainwater that has passed through the filtering filter 17 and has been filtered to remove leaves, dust, etc., is collected by the rainwater storage tank T1. It is stored in the tank T1. The filter 17 has a stainless mesh convex structure in which dirt hardly accumulates and hardly rusts, and has a structure in which even if leaves or the like adhere to the filter, it can be removed by the wind when it dries. The upper part of the vertical rainwater storage tank T2 is covered with a lid 56.

A rainwater discharge pipe 12, a lower pipe 20, and a rainwater supply pipe 60 are provided below the vertical rainwater storage tank T1, and the overflow pipe 2 and the communication pipe 18 are provided in the rainwater supply pipe 60. Is connected. A rainwater extraction pipe 13, a lower pipe 21, and a rainwater supply pipe 61 are provided below the vertical rainwater storage tank T2.
The lower pipe 21 is provided with a communication pipe 1.
The overflow pipe 3 and the water distribution pipe 65 are connected to the rainwater supply pipe 61.

In this configuration, when the vertical rainwater storage tank T1 is filled with rainwater and the water surface reaches the upper end of the overflow pipe 2, the rainwater overflowing from the water surface is drained from the overflow pipe 2 by the rainwater. It is guided and supplied to the inside of the rainwater storage tank T2 via the supply pipe 60, the communication pipe 18, and the lower pipe 21. When the inside of the vertical rainwater storage tank T2 is filled with rainwater and the water surface reaches the upper end of the overflow pipe 3, rainwater overflowing from the water surface flows from the overflow pipe 3 to the water distribution pipe 65 via the rainwater supply pipe 61. , And supplied to a horizontal rainwater storage tank A via a water distribution pipe 14. In addition, as shown in FIG.
A rainwater infiltration mass M1 formed by opening a hole in a bucket-shaped container is arranged at a connection portion between the water supply pipe 5 and the water distribution pipe 14, and the stored rainwater is permeated into the ground from the rainwater infiltration mass M1.

The rainwater stored in the vertical rainwater storage tanks T1 and T2 merges from the rainwater extraction pipes 12 and 13, and is supplied to the flush toilet C2 on the second floor via water supply pipes 34 and 36.
It can be used for flushing the flush toilet C1 on the first floor and watering plants growing on the roof balcony V on the second floor. Further, strainers 52 shown in FIG. 9 are provided at the distal ends of the rainwater extraction pipes 12 and 13, respectively, so that clean supernatant water can be supplied through the strainers 52 and used as washing water for flush toilets. The configuration is such that piping troubles such as clogging of a fine strainer of a ball tap valve which may occur when the supply is performed can be avoided.

The vertical rainwater storage tanks T1 and T2 are
Rainwater extraction pipes 12 and 13 and lower pipe 20
By projecting the 21, the bottom portion is configured to be a sludge collecting portion, so that clean supernatant water can be supplied. Drain pipes 30 and 31 are provided at the bottom of the vertical rainwater storage tanks T1 and T2 so as to remove sludge settled in the sludge reservoir by opening and closing the drain cocks 26 and 25. That is, at the time when the rainfall during the rainy season is not troublesome, with the drain cocks 26 and 25 opened, the rainfall on the roof surface is collected in a gutter, the rainwater is dropped violently, and hits the bottom of the tank. The inside of the tank can be washed by stirring the sludge precipitated in the tank and discharging it from the drain pipes 30 and 31.

The communication pipe 18 is provided with a drain cock 19 for discharging mud when it accumulates therein, and the rainwater extraction pipes 12 and 13 are provided with water supply control cocks 27 and 28. ing. Further, the rainwater extraction pipes 12 and 13 may be provided with a water stop cock. The vertical rainwater storage tanks T1 and T2 are placed on a tank support 9 integrally formed of concrete or the like beside the foundation 4 of the house, and fixed to the wall 5 of the house by a tank fixing band 16. By doing so, it is configured to be arranged vertically between the eaves of the roof of the house and the foundation ground.

The supply of accumulated rainwater to the roof balcony V on the second floor of the house is performed through a pipe 33 communicating with a water supply pipe 36. This is because the vertical rainwater storage tanks T1 and T2 have a high water storage level, and when the rainwater is filled up to the upper part of the vertical rainwater storage tanks T1 and T2, the height of the water head causes a gap corresponding to the gap. The amount of water can be supplied to the roof balcony V on the second floor.

The rainwater collected from the rainwater discharge pipes 12 and 13 can be supplied to a pumping pump Q via a branch pipe 66. The pumping pump Q obtains a household power supply from an outdoor outlet 35. It can be driven. The rainwater extraction pipes 12 and 13 are also connected to a water supply pipe 15, and are connected to the vertical rainwater storage tanks T <b> 3 and T <b> 4 and the horizontal rainwater storage tank A via the water supply pipe 15. A connection portion between the rainwater extraction pipes 12 and 13 and the water supply pipe 15 has a water stop valve mass M3 made of a rainwater permeation mass.
Are arranged. The vertical rainwater storage tank T
It is also possible to attach a water level sensor for detecting the amount of stored water to 1 · T2.

Normally, when rainwater is stored up to the upper part of the vertical rainwater storage tanks T1 and T2, the stored rainwater is flushed on the second floor flush toilet C2 with a difference in storage level according to the U-tube principle.
It can be supplied to However, when the water storage level in the tank is lowered or the tank becomes empty, the stored rainwater cannot be supplied to the flush toilet C2 on the second floor. Therefore, when the water storage level in the tank decreases, the stored rainwater in the tank is pumped up by driving the water pump Q to be able to be supplied as flushing water to the flush toilet C2 on the second floor. When it becomes empty, the pumped water pump Q drives pumping pump Q to pump up the rainwater stored in the vertical rainwater storage tanks T3 and T4 and the horizontal rainwater storage tank A, so that the flush water is supplied to the flush toilet C2 on the second floor. It is possible to supply as.

Further, regarding the flush toilet C1 on the first floor,
Since the horizontal rainwater storage tank A is located at a position lower than the water storage level, the horizontal rainwater storage tank A is supplied with the pump P
By pumping the rainwater stored in the buried rainwater storage tank B according to 1, it is possible to supply the rainwater from the horizontal rainwater storage tank A by natural fall. In the vertical rainwater storage tanks T1 and T2, the overflow pipes 2.3 and the rainwater extraction pipes 12 and 13 and the lower pipe 2
The piping structures such as 0.21 and the rainwater supply pipes 60 and 61 are formed using the same members. Therefore, the rainwater guide gutter 1, the filtration filter 17, the communication pipe 18, the water distribution pipe 65
By changing the mounting position such as the above, it is possible to make a piping structure in the opposite direction.

In FIG. 8, a horizontal rainwater storage tank A is shown.
The rainwater overflowing from the vertical rainwater storage tank T2 passes through the overflow pipe 3, the water distribution pipe 14, etc.
Collection pipe 4 of horizontal rainwater storage tank A connected to 4
8, the rainwater is supplied from the roof K through the water collecting gutter K to remove the trash from the roof K, and the rainwater is also supplied from the water collecting pipe 49. It has a configuration.

When the horizontal rainwater storage tank A is filled with rainwater and becomes full, the overflowed rainwater storage tank B is supplied to the horizontal rainwater storage tank B via the water distribution pipe 45. The water distribution pipe 45 has a rainwater penetration mass M
2 is provided so that the stored rainwater permeates the ground from the rainwater permeation mass M2. Further, the water distribution pipe 45 is communicated with the rainwater storage container Z,
In the rainwater storage container Z, a water pump P1 is disposed. Therefore, when no rainwater is stored in the horizontal rainwater storage tank A and rainwater is stored in the buried rainwater storage tank B, the water pump 43 is driven to drive the water pump pipe 43. Through this, the rainwater stored inside the buried rainwater storage tank B can be pumped to the horizontal rainwater storage tank A. The pump P1 is driven by the electric power generated by the solar cell D.

In the present embodiment, the horizontal rainwater storage tank A is formed by connecting three tanks, and is configured to communicate with each other via communication pipes 50 and 51. Each of the tanks has a reinforcing wall 52.
-Reinforced in communication with 52. In addition, the horizontal rainwater storage tank A is provided with a water level gauge float 41 so that the amount of stored rainwater can be easily checked. .
The rainwater stored in the horizontal rainwater storage tank A is used as washing water for the flush toilet C1 on the first floor via a water use pipe 46, and is used for washing, sprinkling, or irrigation of automobiles via the water use pipes 47 and 53. Used as domestic water.

At the bottom of the horizontal rainwater storage tank A,
The water use pipes 46 and 47 and the drain pipe 67 are protruded to form a sludge collecting section. By opening and closing a cock provided on the drain pipe 67, sludge settled in the sludge collecting section can be removed. Cleaning inside is possible. The water utilization pipes 46 and 47
A strainer 52 shown in FIG. 9 is provided at each of the distal ends of the shampoos, and it is possible to supply clean supernatant water through the strainer 52, which may occur when the water is supplied as flush water for a flush toilet. The configuration is such that piping troubles such as clogging of the fine strainer of the ball tap valve can be avoided.

In the present embodiment, the vertical rainwater storage tank T is configured to be connected in a two-line system, but the number thereof is not particularly limited. As a continuous system, a configuration in which rainwater can be sequentially supplied and stored may be used, and the arrangement interval between them is not particularly limited. In addition, although the double vertical rainwater storage tank T is arranged in two places, it may be configured in one place and the horizontal rainwater storage tank A is arranged in another place in another place. The number of the horizontal rainwater storage tanks A to be connected is not particularly limited. This is because it is desirable to determine the type, the number (the number and the number), and the arrangement position of the rainwater storage tanks in consideration of the shape and site of the house.

[0039]

As described above, the present invention has the following advantages. By dividing the roof of the house as described in claim 1 and arranging a plurality of rainwater storage tanks for storing rainwater for each of the roofs, for example, even when the roof is divided into three parts, it descends on each roof. Since rainwater can be stored in separate tanks, the rainwater storage tank can be filled even when a small amount of rain falls. In addition, rainwater that falls on the premises is temporarily stored on the premises without being drained to the sewage at once, used as domestic water, and then gradually penetrates into the ground or drains into the sewage to retain rainwater. The ability was artificially increased.

As described in claim 2, the plurality of rainwater storage tanks are vertically arranged between the eaves of the house and the foundation ground to collect rainwater from a water collection gutter on a roof and store the rainwater. A rainwater storage tank and a horizontal rainwater storage tank that collects water from the roof drainage gutter and guides and stores the rainwater by piping to store the rainwater. The rainwater stored in the vertical rainwater storage tank is used as flush water for flush toilets on the second floor, and the rainwater storage tank in the vertical rainwater storage tank is used separately for the horizontal rainwater storage tank that can store a large amount of rainwater at a lower position. Rainwater can be used as flush water for flush toilets on the first floor,
This made it possible to efficiently use rainwater as flush water for flush toilets.

According to a third aspect of the present invention, in the case where a rainwater storage tank for storing rainwater falling on the roof of a house is provided, and the rainwater in the rainwater storage tank is used as the flush water for the flush toilet, the flush toilet is disposed on the second floor. By installing a pump that pumps up the washing water, even if the drought season continues and the amount of water stored in the vertical rainwater storage tank decreases or becomes empty,
The remaining rainwater in the vertical rainwater storage tank or the horizontal rainwater storage tank A can be pumped by a water pump and used as flush water for the flush toilet on the second floor. Can be as short as possible. This has made it possible to use rainwater even more effectively.

According to a fourth aspect of the present invention, the flush water to the first-floor flush toilet is supplied by natural fall due to a difference in head of the tank. Utilizing the difference in water level between the tank and the low tank of the flush toilet, it is possible to supply and use the stored rainwater, eliminating the need to use a pump or other means to consume power, making the eco-life system house an efficient configuration It can be.

[Brief description of the drawings]

FIG. 1 is an overhead view of an eco-life system house in which a plurality of rainwater storage tanks are arranged.

FIG. 2 is a conceptual diagram showing a rainwater flow path of an eco-life system house that makes effective use of all rainwater falling on the premises.

FIG. 3 is a perspective view showing an embodiment of the vertical rainwater storage tanks T1 and T2.

FIG. 4 is a front sectional view showing a portion of the communication pipe 18;

FIG. 5 is a plan sectional view of the same.

FIG. 6 is a right side view of the same.

FIG. 7 is a left side view of the same.

FIG. 8 is a perspective view showing an embodiment of a horizontal rainwater storage tank A.

FIG. 9 is a partial cross-sectional view showing a state where a strainer 62 is mounted on the rainwater extraction pipe 12.

[Explanation of symbols]

 T Vertical rainwater storage tank A Horizontal rainwater storage tank B Buried rainwater storage tank C Rinse toilet E / F / N Water collecting gutter H / KG Roof M Rainwater infiltration mass underground P1 Pumping pump Q Pumping pump X Groundwater infiltration pipe Y Overflow pipe Z Rainwater storage container 1 Rainwater guide gutter 2.3 Overflow pipe

Claims (4)

[Claims] 1. A rainwater storage tank system, wherein a roof of a house is divided and a plurality of rainwater storage tanks for storing rainwater are arranged for each roof. 2. A vertical rainwater storage tank, wherein the plurality of rainwater storage tanks are vertically arranged between an eaves of a house and a foundation ground to collect and store rainwater from a water collection gutter on a roof. 2. The rainwater storage tank system according to claim 1, further comprising a horizontal rainwater storage tank that collects water from a water collection gutter on a roof, and guides and stores rainwater by piping. 3. When a rainwater storage tank for storing rainwater falling on a roof of a house is provided, and the rainwater in the rainwater storage tank is used as flush water for flush toilets, flush water for flush toilets arranged on the second floor is provided. A rainwater storage tank system comprising a pump for pumping water. 4. The rainwater storage tank system according to claim 3, wherein the flush water to the flush toilet on the first floor is supplied by natural fall due to a difference in head of the tank.