JP2010196267A - Rainwater utilization device and roof rainwater utilization system using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof rainwater utilization system, capable of easily concentrating rainwater by raising the level of rainfall even in a horizontal plane without inclination which has a relatively small rainfall area. <P>SOLUTION: In the roof rainwater utilization system, at least two rainwater inflow ports 2 and 2' are provided on a roof 1 at the same level, and the level of water flowing to one inflow port 2 is raised by a weir 3, whereby rainwater is collected 5 to a bottomed inflow pipe 4 inserted to the other inflow port 2, 2'. The collected water 5 is pumped to a rainwater tank on the roof by a suction pump through a minor diameter pumping pipe 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rainwater utilization device used for rooftop greening and the like and a rooftop rainwater utilization system using the same, and relates to a device and system that can efficiently store rainwater and use it for irrigation.

  Conventionally, in order to collect rainwater on the roof of a building, a rainwater inflow tank that flows out from a wide rainfall area has been used (for example, Patent Documents 1 to 3).

  The device of Patent Document 1 is a method in which a large water storage tank is provided between the rooftop and the raising member, but it is necessary to significantly raise the existing building rooftop for the construction, and the construction cost is high and large-scale construction is required. Cost.

  The device of Patent Document 2 needs to provide a large water storage tank on the wall surface of the building. This method also has a high construction cost and cannot be easily installed.

  The device of Patent Document 3 collects rainwater flowing out from a greening container into a small tank, and then pumps it into a water storage tank. The rainwater flowing through the greening container is collected and stored. It is hard to say that it collects rainwater efficiently.

  In addition, since the conventional water collecting method basically uses rainwater that flows out from the entire rooftop green surface, it requires a wide rainfall area and a single concentrated inclination angle, making rainwater easier and more efficient. It has been desired to develop a system that can use the system.

JP-A-9-56275 JP2003-102265A JP 2003-199443 A

  The present invention can easily detect a rise in the level of rainfall even in a relatively narrow rainfall area, and even on a horizontal plane without an inclination angle, thereby making it possible to efficiently use the rainfall and to carry out a large-scale construction on an existing building rooftop. An object of the present invention is to provide a rainwater utilization device that can be installed easily without using a roof, and a rooftop rainwater utilization system using the same.

In order to achieve the above object, the present invention firstly has an upper surface having a diameter that can be inserted into a rooftop rainwater inlet and configured to be locked to the rainwater inlet by an upper end thereof. An open bottomed inflow pipe is provided, an inflow rainwater discharge small-diameter opening is drilled in the upper side of the bottomed inflow pipe, a small-diameter pump is inserted into the bottomed inflow pipe, and the inflow pipe and the small-diameter pump A conductive switch that is closed when the water level in the inflow pipe reaches a certain level due to inflow rainwater is provided, and a suction pump that operates when the switch is closed and stops when the switch is opened is provided. It is comprised by the rainwater utilization apparatus comprised so that connection with a connection pipe is possible.

  The conductive switch that closes when the water level in the inflow pipe reaches a certain level or more due to the inflow rainwater between the inflow pipe and the small-diameter pumping pipe, for example, has a predetermined height difference between the lower ends of the long and short insulation coated conductors. It can be considered that the water is exposed and disposed, and when the water level becomes such that both lower ends are submerged by the stored rainwater, the water is conducted through the stored water. Therefore, when the rainwater flows into the rainwater inlet with the bottomed inflow pipe inserted into, for example, the rooftop rainwater inlet and the rainwater utilization device is configured on the roof, the rainwater is stored in the bottomed inlet pipe, Since the conductive switch is turned on when the predetermined water level is reached, the stored rainwater in the bottomed inflow pipe is pumped up by the suction pump. When the water level drops and the conductive switch is turned off, the suction pump is stopped.

  Secondly, the conductive switch is configured such that the lower ends of the long and short insulation coated conductors hanging in the gap between the pumping pipe and the bottomed inflow pipe are exposed with a predetermined height difference. It is comprised by the rainwater utilization apparatus of the said 1st which makes the said conduction switch conduct by the stored rainwater in the said bottomed inflow pipe.

  Therefore, when the stored rainwater level of the bottomed inflow pipe rises and any of the lower ends of the long and short insulation coated conductors is submerged, the switch is turned on, and the stored rainwater is pumped up by the suction pump, and the water level is lowered. When the lower end of the pump is exposed, the suction pump stops driving, and the pumping up of rainwater is stopped.

  Thirdly, an upper end flange is provided at the upper end of the bottomed inflow pipe, and the bottomed inflow pipe can be held at the inflow inlet by allowing the flange to be locked to the periphery of the rainwater inflow inlet. The first short pipe is provided with an upright short cylinder on the flange, a plurality of rainwater inflow holes are formed on the outer periphery of the lower end of the short cylinder, and the upper portion of the pumping pipe is protruded through an elbow outside the side wall of the short cylinder. Or it is comprised by the rainwater utilization apparatus of 2 description.

  The long and short insulated conductors can be suspended and supported on the upper end closing lid of the short cylinder, for example.

  Fourth, the suction pump is installed on the roof of the building, the bottomed inflow pipe is inserted and installed at the rainwater inlet of the roof, and the suction pump and the small diameter pumping pipe are connected by the connecting pipe, and the bottomed The rooftop using the rainwater utilization apparatus according to any one of the first to third aspects, wherein water collected in the inflow pipe is pumped to the rainwater tank installed on the rooftop by the suction pump through the small diameter pumping pipe. It consists of a rainwater utilization system.

  With this configuration, rainwater stored in the bottomed inflow pipe can be sucked with a suction pump and stored in the rainwater tank, so that rainwater can be efficiently used on the rooftop, for example for irrigation of rooftop greening plants, etc. Can be used.

  Fifth, there are at least two rainwater inlets on the roof of the building, and the rainwater utilization apparatus is configured by installing the bottomed inlet pipe at one of the rainwater inlets. It is comprised by the rooftop rainwater utilization system using the rainwater utilization apparatus of said 4th.

  Thus, even if there are a plurality of rainwater inlets on the roof, a rainwater utilization device can be configured using only one of them. Therefore, even when a plurality of rainwater inlets exist on the roof of the building, a bottomed inflow pipe may be attached to one of the rainwater inlets.

  Sixth, there are at least two rainwater inlets on the roof of the building, and a dam is provided at the periphery of one of the rainwater inlets so that the water level flowing into the inlet can be raised by the dam. The rainwater utilization apparatus according to the fourth aspect is configured such that the rainwater raised by the weir can be collected in the bottomed inflow pipe inserted into the other rainwater inlet. It consists of a rooftop rainwater utilization system.

  By providing a dam at the periphery of the rainwater inlet in this way, the water level on the roof can be raised and rainwater can be intensively flowed into other rainwater inlets with bottomed inflow pipes. Can be stored. Therefore, when the rooftop rain flows into one of the rainwater inlets, the water level rises by the weir, and is thereby collected in the bottomed inlet pipe in the other rainwater inlet. Water collected in the inflow pipe is stored in the rainwater tank by a suction pump through a pumping pipe. The water collection level in the inflow pipe is detected by the conductive switch, and automatically closes (ON) when the water collection level rises to operate the pump, and automatically opens (OFF) when the water collection level drops. Stop. The water stored in the rainwater tank can be sprayed on the rooftop by, for example, operating a sprinkler on the rooftop by a water pump, for example, in fine weather.

  Seventh, a rooftop using the rainwater utilization apparatus according to any one of the fourth to sixth aspects, wherein rainwater in the bottomed inflow pipe can be stored in the rainwater tank through the rainwater filtration filter by the pump. It consists of a rainwater utilization system.

  Eighth, it is constituted by a rooftop rainwater utilization system using the rainwater utilization apparatus according to any one of the fourth to seventh aspects, in which a sprinkler is connected to the rainwater tank via a water pump.

  Since the present invention is based on the above-described apparatus and system, it is not necessary to form a wide rainfall area on the rooftop, and it is possible to efficiently perform rainfall even on a narrow rooftop by simply inserting a bottomed inflow pipe into an existing rainwater inlet on the existing rooftop. The rainwater can be used for rooftop greening in sunny weather.

  In addition, when there are a plurality of rainwater inlets on the roof, it is only necessary to install a bottomed inflow pipe in one inlet, so that rainwater can be effectively used with a simple configuration.

  In addition, if there are multiple rainwater inlets on the rooftop, a dam is provided at one inlet to raise the water level on the rooftop, and stormwater flows into the other rainwater inlets with bottomed inlet pipes. Rainwater can be efficiently stored.

It is a perspective view which shows the roof rainwater utilization system using the rainwater utilization apparatus of this invention. (A) is a side view of the other bottomed inflow pipe and suction pipe part, (b) is a longitudinal side view of the suction pipe part, and (c) is a longitudinal sectional view of one rainwater inlet. FIG. 2A is a transverse sectional view taken along line AA. (A) is a circuit diagram of a brake motor for a pump, (b) is a vertical side view of a closed conductive switch.

  A water leakage prevention wall 9 is provided on the outer periphery of the rooftop 1 such as the existing building 8.

  The rooftop 1 is provided with rainwater inlets 2 and 2 'at least at two locations.

  Rainwater that has flowed into the inlets 2 and 2 ′ is drained to the outside of the floor of the building 8 or to the underground water channel through the vertical conduits 2 ″ and 2 ″ (FIG. 2C). The inflow ports 2 and 2 'are existing drainage ports provided on the roof of an existing building, and have a diameter of about 100 mm to 200 mm.

  An annular weir 3 is projected along the outer periphery of one of the inlets 2 to form an inflow level raising weir 3 for rainwater 10.

  Accordingly, the rainwater flowing into the inlet 2 rises to the level of the weir 3 as shown in FIG.

  In addition, rainwater due to rain on the roof top flows out toward the rainwater inlets 2, 2 '. Although not shown, a guide groove is formed in the vicinity of the rainwater inlets 2 and 2 'on the roof surface for guiding rainwater flowing out to the leakage prevention wall 9 side in the direction of the rainwater inlets 2 and 2'. Has been. Therefore, the rainwater flows out to the rainwater inlets 2 and 2 ′, and the water level rises to the height level of the weir 3 at the inlet 2 so that the rainwater efficiently flows into the one inlet 2 ′. Can be made.

  Thus, in order to allow rainwater to flow into the one inlet 2 'in a concentrated manner, it is effective to provide the weir 3 at the one inlet 2, but the weir 3 is not necessarily required. That is, even when the weir 3 does not exist, rainwater flows into the inlet 2 or 2 ′ through the guide groove or the like, or the roof surface is in the direction of the inlets 2 and 2 ′ from the center. When an inclined surface is formed, it is guided to the inclined surface and flows into the inflow ports 2 and 2 ′.

  Therefore, the inflow level raising weir 3 may or may not be used depending on the situation.

  A bottomed inflow pipe 4 having an upper surface opening is inserted from the other rainwater inlet 2 'into the vertical water conduit 2 ", and a flange 4' formed at the upper end of the pipe 4 is supported by the outer peripheral surface of the inlet 2 '. The inlet 2 'is closed by (locking) the bottomed inflow pipe 4 having a diameter that can be inserted into the inlet 2', for example, the diameter of the pipe is 50 mm to 150 mm. The bottomed inflow pipe 4 is itself of a compact size that can be carried by only one worker and can be installed very easily. It is.

  A gap t is interposed between the inner peripheral surface of the water conduit 2 ″ and the outer peripheral surface of the bottomed inflow pipe 4, and rainwater that has flowed into the inflow pipe 4 has a plurality of inflows formed in the upper part of the pipe 4. The rainwater is discharged out of the floor of the building 8 through the clearance t 4 ″ through the gap t.

  As described above, the rainwater flowing into the inflow pipe 4 is stored and collected 5 between the small-diameter opening 4 ″ and the bottom surface 4a of the pipe 4.

  A small diameter pumping pipe 7 (suction pipe) is inserted into the bottomed inflow pipe 4 thus constructed, and an upright short cylinder 11 is connected to the outer periphery of the flange 4 ′, and is connected to the upper end of the suction pipe 7. The provided elbow 12 projects outside from the side wall of the short cylinder 11 and is connected to a pumping pump (suction pump) P by a rooftop laying pipe 16 as a connecting pipe (FIG. 1).

  A plurality of rainwater inlets 13 (rainwater inlets) are formed on the outer periphery of the lower end of the upright short cylinder 11, and the rainwater 10 on the rooftop 1 can be taken into the bottomed inlet pipe 4 to collect water 5. .

  The upper end closing cover 14 of the short cylinder 11 supports the upper ends of the long and short insulation coated conductors 15 and 15 ′, exposes the lower ends 15a ′ and 15a ″, respectively, and connects the conductors 15 and 15 ′ to the bottomed inflow pipe 4 and the suction. A conductive switch S is formed by hanging in the gap T with the pipe 7 and closing the exposed lower end portions 15a ′ and 15a ″ of the conductors 15 and 15 ′ by the collected water 5 flowing into the inflow pipe 4. However, the switch S can be provided in the gap T between the bottomed inflow pipe 4 and the suction pipe 7 by configuring in this way (see FIG. 4).

  Then, the pump S is operated by closing the switch S, and the collected water 5 in the inflow pipe 4 is passed through the suction pipe 7, elbow 12 and roof laying pipe 16 into a rainwater tank 17 provided on the rooftop 1. A circuit that can be stored via the rainwater filter 18 and automatically stops the pump P in conjunction with the water level gauge of the tank 17 is provided (not shown).

  An overflow hole 17 ′ is provided in the vicinity of the upper portion of the side surface of the rainwater tank 17 so that the water in the tank 17 overflows from the hole 17 ′ and is drained.

  When the water collecting level in the bottomed inflow pipe 4 is lowered to an intermediate level between the lower and lower ends 15a 'and 15a ", the conductive switch S is opened and the pumping pump P is automatically stopped.

  The water collecting level (level of the water collecting 5) in the bottomed inflow pipe 4 is raised and lowered, thereby automatically opening and closing the conductive switch S and automatically and intermittently opening the water collecting 5 in the inflow pipe 4. The rain on the rooftop 1 that can be stored in the tank 17 is automatically stored in the rainwater tank 17 via the filter 18, and the rainwater in the tank 17 is passed through the sprinkler 19 by the water pump P '. Watering (water supply) can be made to a greening facility (not shown).

  The pump P is rotated by a DC motor M as shown in FIG. 4, and the motor M is automatically turned on and off by opening and closing the conductive switch S provided in the power circuit 20.

  Since the present invention is configured as described above, when rainwater pours into the roof due to rain, the rainwater flows into the bottomed inflow pipe 4 from the rainwater inflow opening 13 through the inflow port 2 ′. The water level rises.

  When the water level of the water collection 5 reaches the exposed lower end 15a ″ on the insulation coated conductors 15 and 15 ′ and further rises, the conductive switch S is turned on and the electric motor M starts to be driven. The pump P pumps up the rainwater in the bottomed inflow pipe 4, and the rainwater flows out to the rainwater tank 17 through the elbow 12 and the rooftop laying pipe 16.

  As a result, the rainwater in the bottomed inflow pipe 4 is lowered so that the water level of the collected water 5 is lowered, and the conductive switch S is turned off when the water level falls below the exposed lower end 15a ″. The electric motor M and the pumping pump P are stopped.

  When the water level in the bottomed inflow pipe 4 rises again due to rain and reaches the exposed lower end portion 15a "and further rises, the conductive switch S becomes conductive again, so that the pumping pump P is driven again and the inflow Rainwater in the pipe 4 is pumped into the rainwater tank 17. When the water level of the water collection 5 in the inflow pipe 4 falls below the exposed lower end portion 15a ", the pump P is stopped and the pumping operation is stopped. .

  Thus, when the rainwater level in the bottomed inflow pipe 4 rises above the exposed lower end 15a ″, the rainwater in the inflow pipe 4 is pumped out by the pump P and flows into the rainwater tank 17, and the water level is The intermittent operation that the pumping by the pump P stops when the exposed lower end portion 15a "is lowered is repeated, so that the rainwater in the bottomed inflow pipe 4 is intermittently supplied to the rainwater tank 17, Thus, water for watering the rooftop greening can be supplied to the rainwater tank 17.

  Further, when the dam 3 is provided at the periphery of the rainwater inlet 2, the bottomed inflow pipe 4 is installed in the other rainwater inlet 2 ′ where the dam 3 is not provided. At this time, since the water level rises 10 by the weir 3, rainwater can be efficiently and intensively flowed into the bottomed inflow pipe 4 in the other rainwater inlet 2 'by the raised water level.

  Thus, by providing the weir 3 at the periphery of the rainwater inlet 2, the water level on the roof can be raised, and rainwater can be intensively flowed into the other rainwater inlet 2 ′ having the bottomed inflow pipe 4. , Can efficiently store rainwater. Therefore, when the rooftop rain flows into one of the rainwater inflow ports 2, the water level rises by the weir 3 and is thereby collected in the bottomed inflow pipe 4 in the other rainwater inflow port 2 '. The collected water in the inflow pipe 4 is stored in the rainwater tank 17 by the pumping pump P through the pumping pipe 7. The water collection level in the inflow pipe 4 is detected by the conductive switch S, and automatically closes (ON) when the water collection level rises to operate the pump P, and automatically opens (OFF) when it falls. Then, the pump P is stopped. The water stored in the rainwater tank 17 can be sprayed on the rooftop in fine weather by operating the sprinkler 19 on the rooftop by the water pump P ′.

  2 (B) and 2 (C), 1 'is a waterproof sheet, and 21 in FIG. 4 is a DC power source.

  As described above, according to the present invention, it is not necessary to form a wide rainfall area on the rooftop, and it is possible to rain even on a narrow rooftop by simply inserting the bottomed inflow pipe 4 into the existing rainwater inlet 2 or 2 'on the existing rooftop. Can be stored efficiently, and rainwater can be used for rooftop greening in fine weather.

  In addition, when there are a plurality of rainwater inlets 2 or 2 ′ on the roof, the bottomed inflow pipe 4 may be installed in one inlet, so that rainwater can be effectively used with a simple configuration. Of course, a plurality of bottomed inflow pipes may be installed at each of the plurality of rainwater inflow ports, and rainwater may be pumped from the plurality of bottomed inflow pipes.

  In addition, when there are a plurality of rainwater inlets 2 or 2 ′ on the rooftop, another rainwater inlet 2 provided with a bottomed inflow pipe 4 by raising a water level on the rooftop by providing a weir at one inlet 2. 'Rainwater can be intensively flown into, and rainwater can be efficiently stored.

  In addition, the present invention has an effect that the rainfall level is raised in a relatively narrow rainfall area, for example, even on a horizontal plane having no inclination angle, thereby easily concentrating the rainfall.

  Moreover, the present invention can use the existing rainwater inlet installed on the roof as it is, and can provide a rainwater pumping device (pumping device) simply by installing a bottomed inflow pipe at the inlet. There is an effect that a rooftop rainwater utilization system can be constructed by simple work. That is, since the bottomed inflow pipe itself is inserted into the existing rainwater inlet, no special space is required for rainwater storage.

  In addition, since the bottomed inflow pipe for pumping rainwater is a compact tubular tube and can be carried by only one worker, the construction of the rainwater utilization apparatus according to the present invention is very easy. It is what you play.

  The rainwater utilization apparatus and the rooftop rainwater utilization system using the rainwater utilization apparatus according to the present invention can be widely used as an irrigation system that efficiently uses rainwater in rooftop greening.

1 Rooftop 2, 2 'Rainwater inlet 3 Inflow level rising weir (weir)
4 Bottomed inflow pipe 4 'Top flange 4 "Inflow rainwater discharge small-diameter port 5 Water collection 7 Small-diameter water pump (suction pipe)
11 Upright short cylinder 12 Elbow 13 Rainwater inlet 15, 15 'Long and short insulated wire 15a', 15a "Lower end 16 Roof laying pipe (connecting pipe)
17 Rainwater tank 18 Rainwater filter 19 Sprinkler P Suction pump S Conductive switch

Claims (8)

A bottomed inflow pipe having an upper surface opening having a diameter that can be inserted into a rooftop rainwater inlet and configured to be able to be locked to the rainwater inlet with an upper end portion thereof,
The inflow rainwater discharge small-diameter opening is drilled in the upper part of the side of the bottomed inflow pipe
A small-diameter pump is inserted into the bottomed inflow pipe, and a conductive switch is provided between the inflow pipe and the small-diameter pump pipe to close when the water level in the inflow pipe reaches a certain level due to inflow rainwater.
A suction pump that operates when the switch is closed and stops when the switch is opened,
A rainwater utilization apparatus configured to connect the pump to the small-diameter pumping pipe through a connecting pipe. The conductive switch is arranged by exposing the lower ends of each of the long and short insulating coated conductors suspended in the gap between the pumped pipe and the bottomed inflow pipe with a predetermined height difference,
The rainwater utilization apparatus according to claim 1, wherein the conduction switch is turned on by stored rainwater into the bottomed inflow pipe. An upper end flange is provided at the upper end of the bottomed inflow pipe, and the bottomed inflow pipe is configured to be held at the inflow inlet by enabling the flange to be locked to the periphery of the rainwater inflow inlet.
An upright short cylinder is provided on the flange, and a plurality of rainwater inflow holes are formed on the outer periphery of the lower end of the short cylinder,
The rainwater utilization apparatus according to claim 1 or 2, wherein an upper portion of the pumping pipe is protruded through an elbow outside the side wall of the short cylinder. The suction pump is installed on the roof of the building, the bottomed inflow pipe is inserted and installed at the rainwater inlet of the roof, and the suction pump and the small-diameter pumping pipe are connected by the connecting pipe,
The rainwater utilization apparatus according to any one of claims 1 to 3, wherein water collected into the bottomed inflow pipe is pumped to a rainwater tank installed on the roof by the suction pump through the small diameter pumping pipe. The roof rainwater utilization system used.   The rainwater utilization apparatus is configured by having at least two rainwater inlets on the roof of a building, and installing the bottomed inflow pipe at one of the rainwater inlets. 4. A rooftop rainwater utilization system using the rainwater utilization apparatus according to 4. There are at least two rainwater inlets on the roof of the building,
A dam is provided around one rainwater inlet, and the water level flowing into the inlet can be raised by the dam.
The rooftop using the rainwater utilization apparatus according to claim 4, wherein the rainwater raised by the weir can be collected in the bottomed inflow pipe inserted into the other rainwater inlet. Rainwater utilization system.   The roof rainwater utilization system using the rainwater utilization apparatus according to any one of claims 4 to 6, wherein rainwater in the bottomed inflow pipe can be stored in the rainwater tank by a pump through a rainwater filtration filter.   The roof rainwater utilization system using the rainwater utilization apparatus according to any one of claims 4 to 7, wherein a sprinkler is connected to the rainwater tank via a water pump.

Images