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JP2021095732A - Rainwater utilization method and rainwater utilization device - Google Patents

Rainwater utilization method and rainwater utilization device Download PDF

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JP2021095732A
JP2021095732A JP2019227270A JP2019227270A JP2021095732A JP 2021095732 A JP2021095732 A JP 2021095732A JP 2019227270 A JP2019227270 A JP 2019227270A JP 2019227270 A JP2019227270 A JP 2019227270A JP 2021095732 A JP2021095732 A JP 2021095732A
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rainwater
storage tank
rainwater storage
discharge passage
valve
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塩　坂　邦　雄
Kunio Shiosaka
坂 邦 雄 塩
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Earth Repair Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108—Rainwater harvesting

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Abstract

To provide a rainwater utilization method that can prevent disasters and secure emergency water for use during disaster.SOLUTION: There is disclosed a rainwater utilization method in which rainwater falling on a roof 1 is guided by a guide passage 7 to a rainwater storage tank 2 installed underground for storage. Before or during rain, the water stored in the rainwater storage tank 2 is reduced by drainage means, and the drainage means is stopped to prepare for heavy rain.SELECTED DRAWING: Figure 1

Description

本発明は、雨水の利用方法及び雨水利用装置に係り、特に、災害を防止すると共に、災害時の緊急用水の確保ができる雨水の利用方法及び雨水利用装置に関する。 The present invention relates to a rainwater utilization method and a rainwater utilization device, and more particularly to a rainwater utilization method and a rainwater utilization device capable of preventing a disaster and securing emergency water in the event of a disaster.

従来、屋根に降った雨水を利用する融雪・散水システムがある（例えば、特許文献参照）。
これは、屋根に降った雨水を樋、配管等を介して集水貯溜する貯水タンク（１）と、この貯水タンク（１）の水を屋根、庭等に散水する散水手段（２）と、この散水手段（２）に貯水タンク（１）内の水を汲み上げ供給するポンプ（３）とを備え、貯水タンク（１）は内部が複数の槽に区画され、雨水が流入する最初の槽は沈殿槽（６）で砂、ゴミ等を分離し、沈殿槽（６）より下流側の雨水が貯留される貯留槽（８）にポンプ（３）が収容配置されている。 Conventionally, there is a snow melting / watering system that uses rainwater that has fallen on the roof (see, for example, patent documents).
This includes a water storage tank (1) that collects and stores rainwater that has fallen on the roof via gutters, pipes, etc., and a watering means (2) that sprinkles the water in this water storage tank (1) on the roof, garden, etc. The water sprinkling means (2) is provided with a pump (3) for pumping and supplying the water in the water storage tank (1). The water storage tank (1) is divided into a plurality of tanks, and the first tank into which rainwater flows is The pump (3) is housed and arranged in the storage tank (8) where sand, dust and the like are separated in the settling tank (6) and rainwater on the downstream side of the settling tank (6) is stored.

特開２０１１−２２００１６号公報Japanese Unexamined Patent Publication No. 2011-220016

ところが、上記融雪・散水システムにあっては、近年、問題となっている大雨による水害対策への対応が十分でないという問題点が生じた。 However, in the above-mentioned snowmelt / watering system, there has been a problem that the countermeasures against flood damage caused by heavy rain, which has become a problem in recent years, are not sufficiently dealt with.

本発明は、前記問題点を考慮したなされた雨水の利用方法及び雨水利用装置を提供することを目的とする。 An object of the present invention is to provide a rainwater utilization method and a rainwater utilization device in consideration of the above problems.

請求項１記載の雨水の利用方法は、屋根に降った雨水を案内通路により地中に設置された雨水貯水タンクに導いて貯留する雨水の利用方法であって、雨が降る前又は雨が降っている時に、前記雨水貯水タンク内の貯留した水を排水手段により減らし、前記排水手段を停止して大雨に備えるものである。 The method of using rainwater according to claim 1 is a method of using rainwater that is stored by guiding rainwater that has fallen on the roof to a rainwater storage tank installed in the ground by a guide passage, and before it rains or when it rains. At that time, the water stored in the rainwater storage tank is reduced by the drainage means, and the drainage means is stopped to prepare for heavy rain.

また、請求項２記載の雨水の利用方法は、地中に設置された雨水貯水タンクと、この雨水貯水タンクに貯留した水が所定の貯留量を超えたときに排出する第１の排出通路と、前記雨水貯水タンクに貯留した水を排出する第２の排出通路と、この第２の排出通路を開閉する開閉弁と、前記屋根に降った雨水を前記雨水貯水タンクへ案内する案内通路とを備え、前記第２の排出通路の前記雨水貯水タンクの排出口は、前記第１の排出通路の前記雨水貯水タンクの排出口より低い位置にあり、雨が降る前又は雨が降っている時に、前記開閉弁を開にして、前記雨水貯水タンク内の貯留した水を減らし、前記開閉弁を閉じて、大雨に備えるものである。 The method of using rainwater according to claim 2 is a rainwater storage tank installed in the ground and a first discharge passage for discharging water stored in the rainwater storage tank when the amount of water stored in the rainwater storage tank exceeds a predetermined amount. A second discharge passage for discharging the water stored in the rainwater storage tank, an on-off valve for opening and closing the second discharge passage, and a guide passage for guiding the rainwater falling on the roof to the rainwater storage tank. The discharge port of the rainwater storage tank of the second discharge passage is located at a position lower than the discharge port of the rainwater storage tank of the first discharge passage, and before or when it rains. The on-off valve is opened to reduce the amount of water stored in the rainwater storage tank, and the on-off valve is closed to prepare for heavy rain.

また、請求項３記載のス雨水の利用方法は、請求項２記載の雨水の利用方法において、５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されているものである。 Further, the method of using stormwater according to claim 3 is the method of using stormwater according to claim 2, which includes a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, and opening / closing. Valves and guide passages are installed in each house.

また、請求項４記載の雨水利用装置は、屋根に降る雨水を貯水する雨水利用装置であって、地中に設置された雨水貯水タンクと、この雨水貯水タンクに貯留した水が所定の貯留量を超えたときに排出する排出する第１の排出通路と、前記雨水貯水タンクに貯留した水を排出する第２の排出通路と、この第２の排出通路を開閉する開閉弁と、この開閉弁の開閉を制御する開閉弁制御手段と、前記屋根に降った雨水を前記雨水貯水タンクへ案内する案内通路とを備え、前記第２の排出通路の前記雨水貯水タンクの排出口は、前記第１の排出通路の前記雨水貯水タンクの排出口より低い位置にあり、雨が降る前又は雨が降っている時に、前記開閉弁制御手段により、前記開閉弁を開にして、前記雨水貯水タンク内の貯留した水を減らし、前記開閉弁を閉じて、大雨に備えるものである。 The rainwater utilization device according to claim 4 is a rainwater utilization device that stores rainwater falling on the roof, and the rainwater storage tank installed in the ground and the water stored in the rainwater storage tank have a predetermined storage amount. A first discharge passage for discharging water when the amount exceeds the above, a second discharge passage for discharging water stored in the rainwater storage tank, an on-off valve for opening and closing the second discharge passage, and an on-off valve. The on-off valve control means for controlling the opening and closing of the rainwater storage tank and the guide passage for guiding the rainwater falling on the roof to the rainwater storage tank are provided, and the discharge port of the rainwater storage tank of the second discharge passage is the first. It is located lower than the discharge port of the rainwater storage tank in the discharge passage of the above, and before it rains or when it is raining, the on-off valve is opened by the on-off valve control means to open the on-off valve in the rainwater storage tank. The stored water is reduced and the on-off valve is closed to prepare for heavy rain.

また、請求項５記載の雨水利用装置は、請求項４記載の雨水利用装置において、５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されているものである。 The rainwater utilization device according to claim 5 is the rainwater utilization device according to claim 4, which includes a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, an on-off valve, and a guide. A passage is installed in each house.

また、請求項６記載の雨水の利用方法は、請求項１又は請求項２記載の雨水の利用方法において、夏の暑いときに、雨水貯水タンク内の水をポンプで引き上げて、屋根に散水するか、又は、雨水貯水タンク内の水をポンプで引き上げて、屋根に散水して、前記屋根の雪を溶かすか、又は、雨水貯水タンク内の水をポンプで引き上げて、トイレの水として利用するものである。 Further, the method of using rainwater according to claim 6 is the method of using rainwater according to claim 1 or 2, in which the water in the rainwater storage tank is pumped up and sprinkled on the roof when it is hot in summer. Alternatively, the water in the rainwater storage tank is pumped up and sprinkled on the roof to melt the snow on the roof, or the water in the rainwater storage tank is pumped up and used as toilet water. It is a thing.

請求項１記載の雨水の利用方法によれば、雨が降る前又は雨が降っている時に、雨水貯水タンク内の貯留した水を排水手段により減らし、前記排水手段を停止して大雨に備えるため、大雨が河川等に流れる水の量を低減化して、災害を防止すると共に、災害時の緊急用水の確保ができるものである。 According to the method of using rainwater according to claim 1, the water stored in the rainwater storage tank is reduced by the drainage means before it rains or when it is raining, and the drainage means is stopped to prepare for heavy rain. It is possible to reduce the amount of water that heavy rain flows into rivers, etc., prevent disasters, and secure emergency water in the event of a disaster.

また、請求項２記載の雨水の利用方法によれば、雨が降る前又は雨が降っている時に、開閉弁を開にして、雨水貯水タンク内の貯留した水を減らし、開閉弁を閉じて、大雨に備えるため、災害を防止すると共に、災害時の緊急用水の確保ができるものである。 Further, according to the method of using rainwater according to claim 2, the on-off valve is opened before it rains or when it is raining to reduce the amount of water stored in the rainwater storage tank, and the on-off valve is closed. In order to prepare for heavy rain, it is possible to prevent disasters and secure emergency water in the event of a disaster.

また、請求項３記載の雨水の利用方法によれば、５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されているため、大雨が河川等に流れる水の量を更に低減化して災害をより防止すると共に、災害時の緊急用水の確保ができるものである。 Further, according to the method of using rainwater according to claim 3, a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, an on-off valve and a guide passage are installed in each house. Therefore, it is possible to further reduce the amount of water flowing into rivers and the like due to heavy rain to further prevent disasters and secure emergency water in the event of a disaster.

また、請求項４記載の雨水利用装置によれば、雨が降る前又は雨が降っている時に、開閉弁を開にして、雨水貯水タンク内の貯留した水を減らし、開閉弁を閉じて、大雨に備えるため、大雨が河川等に流れる水の量を低減化して、災害を防止すると共に、災害時の緊急用水の確保ができるものである。 Further, according to the rainwater utilization device according to claim 4, the on-off valve is opened to reduce the amount of water stored in the rainwater storage tank, and the on-off valve is closed before it rains or when it is raining. In order to prepare for heavy rain, the amount of water that heavy rain flows into rivers and the like can be reduced to prevent disasters and secure emergency water in the event of a disaster.

また、請求項５記載の雨水利用装置によれば、５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されているため、大雨が河川等に流れる水の量を更に低減化して災害をより防止すると共に、災害時の緊急用水の確保ができるものである。 Further, according to the rainwater utilization device according to claim 5, a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, an on-off valve and a guide passage are installed in each house. Therefore, it is possible to further reduce the amount of water flowing into rivers and the like due to heavy rain to further prevent disasters and secure emergency water in the event of a disaster.

図１は、本発明の一実施例の雨水利用装置の概略的図である。FIG. 1 is a schematic view of a rainwater utilization device according to an embodiment of the present invention.

本発明の一実施例の雨水の利用方法及び雨水利用装置を図面を参照して説明する。 The rainwater utilization method and the rainwater utilization apparatus of one embodiment of the present invention will be described with reference to the drawings.

図１に示すＲは、屋根１に降る雨水を貯水する雨水利用装置（ハイブリッド災害自立支援システム）で、雨水利用装置Ｒは、地中に設置された雨水貯水タンク２と、この雨水貯水タンク２に貯留した水が所定の貯留量を超えたときに排出する排出する第１の排出通路３と、雨水貯水タンク２に貯留した水を排出する第２の排出通路４と、この第２の排出通路４の開閉する開閉弁５と、この開閉弁５の開閉を制御する開閉弁制御手段６と、屋根１に降った雨水を雨水貯水タンク２へ案内する案内通路７とを備えている。なお、雨水貯水タンク２の容量は、例えば、一般家庭にあっては、５０００リットル〜１００００リットルである。また、雨水貯水タンク２は、例えば、特許2901959号記載の積層構造物２１の周囲をゴムシートで被うことにより形成することができる。 R shown in FIG. 1 is a rainwater utilization device (hybrid disaster independence support system) for storing rainwater falling on the roof 1, and rainwater utilization device R is a rainwater storage tank 2 installed in the ground and the rainwater storage tank 2 A first discharge passage 3 for discharging when the water stored in the stormwater storage tank 2 exceeds a predetermined storage amount, a second discharge passage 4 for discharging the water stored in the rainwater storage tank 2, and this second discharge. It includes an on-off valve 5 that opens and closes the passage 4, an on-off valve control means 6 that controls the opening and closing of the on-off valve 5, and a guide passage 7 that guides rainwater that has fallen on the roof 1 to the rainwater storage tank 2. The capacity of the rainwater storage tank 2 is, for example, 5000 liters to 10000 liters in a general household. Further, the rainwater storage tank 2 can be formed, for example, by covering the periphery of the laminated structure 21 described in Japanese Patent No. 2901959 with a rubber sheet.

第２の排出通路４の雨水貯水タンク２の排出口２１は、第１の排出通路３の雨水貯水タンク２の排出口２２より低い位置にあり、雨が降る前又は雨が降っている時に、開閉弁制御手段６により、開閉弁５を開にして、雨水貯水タンク２内の貯留した水を減らし、開閉弁５を閉じて、大雨に備えるものである。
つまり、屋根１に降った雨水を案内通路７より地中に設置された雨水貯水タンク２に導いて貯留する雨水の利用方法（雨水利用装置Ｒ）であって、雨が降る前又は雨が降っている時に、雨水貯水タンク２内の貯留した水を排水手段（第２の排出通路４、開閉弁５、開閉弁制御手段６）により減らし、排水手段（第２の排出通路４、開閉弁５、開閉弁制御手段６）を停止して大雨に備えるようにしている。
そのため、大雨が河川等に流れる水の量を低減化して、災害を防止すると共に、災害時の緊急用水の確保ができるものである。
なお、降雨の最初の雨水は大気中の粉塵を取り込むため、最初の５ミリの雨は、カットして水質が安定した雨水のみを雨水貯水タンク２に導くようにしている（初期降雨カットシステム）。
図１に示す１０は、案内通路７の中途より分離した中途タンクで、中途タンク１０（容量は、例えば、５mm×屋根の面積）は、屋根１に降った最初の雨水をため、オーバーフローした水が雨水貯水タンク２へと導かれるようになっている。１１は中途タンク１０を開閉する開閉弁、１２は開閉弁１１を制御する開閉弁制御手段で、１００は地中に設置された下水導管である。 The discharge port 21 of the rainwater storage tank 2 of the second discharge passage 4 is located at a position lower than the discharge port 22 of the rainwater storage tank 2 of the first discharge passage 3, and is located before or when it is raining. The on-off valve control means 6 opens the on-off valve 5, reduces the amount of water stored in the rainwater storage tank 2, and closes the on-off valve 5 to prepare for heavy rain.
That is, it is a method of using rainwater (rainwater utilization device R) in which rainwater that has fallen on the roof 1 is guided from the guide passage 7 to the rainwater storage tank 2 installed in the ground and stored, and before it rains or when it rains. At that time, the water stored in the rainwater storage tank 2 is reduced by the drainage means (second discharge passage 4, on-off valve 5, on-off valve control means 6), and the drainage means (second discharge passage 4, on-off valve 5). , The on-off valve control means 6) is stopped to prepare for heavy rain.
Therefore, it is possible to reduce the amount of water that heavy rain flows into rivers and the like to prevent disasters and secure emergency water in the event of a disaster.
Since the first rainwater of rainfall takes in dust in the atmosphere, the first 5 mm of rain is cut and only rainwater with stable water quality is guided to the rainwater storage tank 2 (initial rainfall cut system). ..
Reference numeral 10 shown in FIG. 1 is a midway tank separated from the midway of the guide passage 7, and the midway tank 10 (capacity is, for example, 5 mm × roof area) is the overflowing water because the first rainwater that has fallen on the roof 1 is stored. Is led to the rainwater storage tank 2. Reference numeral 11 is an on-off valve for opening and closing the intermediate tank 10, reference 12 is an on-off valve controlling means for controlling the on-off valve 11, and 100 is a sewage conduit installed underground.

また、夏の暑いときに、雨水貯水タンク２内の水をポンプＰ１で引き上げて、屋根１に散水するか、又は、雨水貯水タンク２内の水をポンプＰ１で引き上げて、屋根１に散水して、屋根１の雪を溶かすか、又は、雨水貯水タンク２内の水をポンプＰ２で引き上げて、トイレの水として利用することができる（下水道料金の低減）。
なお、ポンプＰ１、ポンプＰ２は、ソーラーパネル２０で発電される電気を蓄電したものを使用する。
また、地下水温度は地域の年平均気温と一致しているため、東北地方でも15℃の地下水が得られる、融雪後はマイナス５℃熱が取られるが、雨水貯水タンク２で、地熱により数日で１５℃に回復する。 Further, when it is hot in summer, the water in the rainwater storage tank 2 is pulled up by the pump P1 and sprinkled on the roof 1, or the water in the rainwater storage tank 2 is pulled up by the pump P1 and sprinkled on the roof 1. Then, the snow on the roof 1 can be melted, or the water in the rainwater storage tank 2 can be pulled up by the pump P2 and used as water for the toilet (reduction of sewerage charges).
As the pumps P1 and P2, those storing electricity generated by the solar panel 20 are used.
In addition, since the groundwater temperature matches the annual average temperature of the region, groundwater of 15 ° C can be obtained even in the Tohoku region. After snowmelt, -5 ° C heat is taken, but in the rainwater storage tank 2, it takes several days due to geothermal heat. Recovers to 15 ° C.

なお、上述した雨水利用装置Ｒは、望ましくは、５０００リットル以上の雨水を貯留する雨水貯水タンク２、第１の排出通路３、第２の排出通路４、開閉弁５及び案内通路７が、各戸に設置されているのが良い。この場合、大雨が河川等に流れる水の量を各戸で低減化して災害をより防止すると共に、災害時の緊急用水の確保ができ、下流域の流失を抑制（各戸に雨水貯留槽を設けて、下流域の洪水ピーク流量を減少させる洪水調整機能）し個々が自立できるようすることができるものである。 The above-mentioned rainwater utilization device R preferably has a rainwater storage tank 2 for storing 5000 liters or more of rainwater, a first discharge passage 3, a second discharge passage 4, an on-off valve 5, and a guide passage 7. It is good to be installed in. In this case, the amount of water that heavy rain flows into rivers, etc. can be reduced in each house to prevent disasters, and emergency water can be secured in the event of a disaster, and the outflow of downstream areas can be suppressed (rainwater storage tanks are provided in each house). , Flood control function to reduce the flood peak flow in the downstream area), and it is possible for each individual to become independent.

Ｒ 雨水利用装置
１ 屋根
２ 雨水貯水タンク
３ 第１の排出通路
４ 第２の排出通路
５ 開閉弁
６ 開閉弁制御手段
７ 案内通路 R Rainwater utilization device 1 Roof 2 Stormwater storage tank 3 1st discharge passage 4 2nd discharge passage 5 On-off valve 6 On-off valve control means 7 Guide passage

Claims (6)

屋根に降った雨水を案内通路により地中に設置された雨水貯水タンクに導いて貯留する雨水の利用方法であって、
雨が降る前又は雨が降っている時に、前記雨水貯水タンク内の貯留した水を排水手段により減らし、前記排水手段を停止して大雨に備える
ことを特徴とする雨水の利用方法。 It is a method of using rainwater that is stored by guiding the rainwater that has fallen on the roof to a rainwater storage tank installed underground through a guide passage.
A method of using rainwater, which comprises reducing the amount of water stored in the rainwater storage tank by a drainage means and stopping the drainage means to prepare for heavy rain before it rains or when it is raining. 地中に設置された雨水貯水タンクと、
この雨水貯水タンクに貯留した水が所定の貯留量を超えたときに排出する第１の排出通路と、
前記雨水貯水タンクに貯留した水を排出する第２の排出通路と、
この第２の排出通路を開閉する開閉弁と、
前記屋根に降った雨水を前記雨水貯水タンクへ案内する案内通路とを備え、
前記第２の排出通路の前記雨水貯水タンクの排出口は、前記第１の排出通路の前記雨水貯水タンクの排出口より低い位置にあり、
雨が降る前又は雨が降っている時に、前記開閉弁を開にして、前記雨水貯水タンク内の貯留した水を減らし、前記開閉弁を閉じて、大雨に備える
ことを特徴とする雨水の利用方法。 A rainwater storage tank installed underground and
A first discharge passage for discharging water stored in this rainwater storage tank when it exceeds a predetermined storage amount, and
A second discharge passage for discharging the water stored in the rainwater storage tank, and
An on-off valve that opens and closes this second discharge passage,
It is provided with a guide passage that guides the rainwater that has fallen on the roof to the rainwater storage tank.
The discharge port of the rainwater storage tank of the second discharge passage is located at a position lower than the discharge port of the rainwater storage tank of the first discharge passage.
Utilization of rainwater, which is characterized by opening the on-off valve to reduce the amount of water stored in the rainwater storage tank and closing the on-off valve to prepare for heavy rain before it rains or when it is raining. Method. ５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されている
ことを特徴とする請求項２記載の雨水の利用方法。 The use of rainwater according to claim 2, wherein a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, an on-off valve and a guide passage are installed in each house. Method. 屋根に降る雨水を貯水する雨水利用装置であって、
地中に設置された雨水貯水タンクと、
この雨水貯水タンクに貯留した水が所定の貯留量を超えたときに排出する排出する第１の排出通路と、
前記雨水貯水タンクに貯留した水を排出する第２の排出通路と、
この第２の排出通路を開閉する開閉弁と、
この開閉弁の開閉を制御する開閉弁制御手段と、
前記屋根に降った雨水を前記雨水貯水タンクへ案内する案内通路とを備え、
前記第２の排出通路の前記雨水貯水タンクの排出口は、前記第１の排出通路の前記雨水貯水タンクの排出口より低い位置にあり、
雨が降る前又は雨が降っている時に、前記開閉弁制御手段により、前記開閉弁を開にして、前記雨水貯水タンク内の貯留した水を減らし、前記開閉弁を閉じて、大雨に備える
ことを特徴とする雨水利用装置。 It is a rainwater utilization device that stores rainwater that falls on the roof.
A rainwater storage tank installed underground and
A first discharge passage for discharging when the water stored in the rainwater storage tank exceeds a predetermined storage amount, and
A second discharge passage for discharging the water stored in the rainwater storage tank, and
An on-off valve that opens and closes this second discharge passage,
An on-off valve control means for controlling the opening and closing of the on-off valve,
It is provided with a guide passage that guides the rainwater that has fallen on the roof to the rainwater storage tank.
The discharge port of the rainwater storage tank of the second discharge passage is located at a position lower than the discharge port of the rainwater storage tank of the first discharge passage.
Before it rains or when it is raining, the on-off valve is opened by the on-off valve control means to reduce the amount of water stored in the rainwater storage tank, and the on-off valve is closed to prepare for heavy rain. A rainwater utilization device characterized by. ５０００リットル以上の雨水を貯留する雨水貯水タンク、第１の排出通路、第２の排出通路、開閉弁及び案内通路が、各戸に設置されている
ことを特徴とする請求項４記載の雨水利用装置。 The rainwater utilization device according to claim 4, wherein a rainwater storage tank for storing 5000 liters or more of rainwater, a first discharge passage, a second discharge passage, an on-off valve, and a guide passage are installed in each house. .. 夏の暑いときに、雨水貯水タンク内の水をポンプで引き上げて、屋根に散水するか、又は、雨水貯水タンク内の水をポンプで引き上げて、屋根に散水して、前記屋根の雪を溶かすか、又は、雨水貯水タンク内の水をポンプで引き上げて、トイレの水として利用する
ことを特徴とする請求項１又は請求項２記載の雨水の利用方法。 In hot summer, the water in the rainwater storage tank is pumped up and sprinkled on the roof, or the water in the rainwater storage tank is pumped up and sprinkled on the roof to melt the snow on the roof. Alternatively, the method of using rainwater according to claim 1 or 2, wherein the water in the rainwater storage tank is pumped up and used as toilet water.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10174963A (en) * 1996-12-17 1998-06-30 Aisin Seiki Co Ltd Rainwater-utilizing apparatus
JP2001329577A (en) * 2000-05-25 2001-11-30 Koken Sangyo Kk Rainwater storage utilization facility
JP2005083180A (en) * 2003-09-05 2005-03-31 Katsuhiko Takahashi Rain water circulating snow melting roof equipment
JP2006070473A (en) * 2004-08-31 2006-03-16 Tanabe Kenchiku Sekkei Jimusho:Kk Rainwater tank and sprinkler
JP2009235872A (en) * 2008-03-28 2009-10-15 Sekisui Chem Co Ltd Method for flood regulation and water utilization, and rainwater storage facility used for the method
JP2011220016A (en) * 2010-04-12 2011-11-04 Wakura Co Ltd Snow melting and sprinkling system utilizing rainwater
JP2013117149A (en) * 2011-12-05 2013-06-13 Tetsuo Suda Rainwater circulation sprinkler and circulation sprinkling method
JP2016079603A (en) * 2014-10-14 2016-05-16 エコ ジャパン株式会社 Rainwater storage tank
JP2016204829A (en) * 2015-04-15 2016-12-08 重信 平 Method and device for controlling rainwater

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10174963A (en) * 1996-12-17 1998-06-30 Aisin Seiki Co Ltd Rainwater-utilizing apparatus
JP2001329577A (en) * 2000-05-25 2001-11-30 Koken Sangyo Kk Rainwater storage utilization facility
JP2005083180A (en) * 2003-09-05 2005-03-31 Katsuhiko Takahashi Rain water circulating snow melting roof equipment
JP2006070473A (en) * 2004-08-31 2006-03-16 Tanabe Kenchiku Sekkei Jimusho:Kk Rainwater tank and sprinkler
JP2009235872A (en) * 2008-03-28 2009-10-15 Sekisui Chem Co Ltd Method for flood regulation and water utilization, and rainwater storage facility used for the method
JP2011220016A (en) * 2010-04-12 2011-11-04 Wakura Co Ltd Snow melting and sprinkling system utilizing rainwater
JP2013117149A (en) * 2011-12-05 2013-06-13 Tetsuo Suda Rainwater circulation sprinkler and circulation sprinkling method
JP2016079603A (en) * 2014-10-14 2016-05-16 エコ ジャパン株式会社 Rainwater storage tank
JP2016204829A (en) * 2015-04-15 2016-12-08 重信 平 Method and device for controlling rainwater

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