JP2000073417A - Device for controlling storage and outflow of rain water for dwelling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store rain water on a roof through a leader to make use of it for sprinkling garden trees therewith and, at the same time, to reduce burden on a sewerage system or a river by controlling outflow and prevent the occurrence of a flood disaster. SOLUTION: A leader 2 is connected to a water storage tank 4 of a water storage for dwelling and outflow controlling device 3. Rain water is stored into the water storage tank 4 through the leader 2, and it flows into an outflow controlling tank 5 in the case it is filled with rain water. The discharge from the outflow controlling tank 5 is controlled by an orifice 6. In the case outflow controlling tank 5 is filled with rain water, it is discharged from a spillway pipe 7, and rain water discharged from both spillway pipe 7 and orifice 6 is discharged to adjoining sewerage system, etc., through a drain pipe 8. Rain water stored in the water stprage tank 4 is used as usable water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus capable of reducing rainwater utilization and load on sewerage facilities and rivers during rainfall by storing and suppressing rainwater falling on the roof of a house. And complementary facilities for rainwater use and sewerage.

[0002]

2. Description of the Related Art Conventionally, rain that has fallen on the roof of a house is collected in a downspout and discharged as it is to an adjacent sewerage facility.
When it is used, it is stored in the basement of a house or garden or stored in a dedicated tank.

[0003]

Conventionally, rain that has fallen on the roof of a house is collected in a downspout and discharged directly to an adjacent sewerage facility or the like. The load is rapidly increasing, causing flooding. In the case of rainwater storage using the basement of a house or garden, it is often difficult to install because it requires expensive and large-scale construction, and when storing in a tank etc., it can be used but there is no effect of controlling runoff There was a point.

[0004] The present invention guides rainfall on the roof of a house to a house rainwater storage and runoff control device to store rainwater for use and control runoff to reduce the load on sewerage facilities and rivers during rainfall. It is intended to be simple.

[0005]

In order to achieve the above object, the present invention comprises a storage tank for reusing rainwater and a runoff control tank provided with an orifice for suppressing runoff. A rainwater storage and runoff control device for houses is installed under the eaves of a house and a downspout is connected.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Rain falling on a roof flows through a downspout 2 into a rainwater storage and runoff control device for a house constructed as described above. First, rainwater flows into the storage tank unit 4 and is stored therein, and when the rainwater is full, it flows into the outflow suppression tank unit 5. Drainage from the outflow suppression tank 5 is suppressed by the orifice 6. The orifice 6 is a small-diameter drain pipe and has a small diameter during heavy rain, so that the outflow of rainwater is suppressed, and the rainwater accumulates in the outflow suppression tank 5. When the outflow suppression tank 5 becomes full, the water is drained from the spillway 7 and drained to the adjacent sewerage facility by the drain 8 together with the drainage from the orifice 6. The rainwater in the outflow suppression tank unit 5 is drained when the inflow from the downspout 2 stops after rainfall, and the rainwater stored in the storage tank unit 4 is used as water for use.

[0007]

As the number of houses in which the apparatus of the present invention is installed increases, water resources can be saved by utilizing rainwater, and the rate of rainwater runoff due to rapid urbanization, which has recently become a problem especially in urban areas, has increased. It can be expected to reduce the occurrence of floods such as floods caused by floods.

[Brief description of the drawings]

FIG. 1 is an installation sectional view of the apparatus of the present invention.

FIG. 2 is a sectional view showing the structure of the device of the present invention.

[Explanation of symbols]

 1. Housing 2. Downspout 3. 3. Residential rainwater storage and runoff control equipment Storage tank section 5. Outflow control tank 6. Orifice 7. Spillway 8. Drain pipe

Claims (1)

[Claims] Claims: 1. A storage tank for storing rainwater falling on a roof of a house, which can be used for emergency such as watering garden trees or disasters, and for reducing a load on sewerage facilities and rivers during rainfall. Residential rainwater storage and runoff control device consisting of a runoff control tank with an orifice.