JP2013002144A - Rain gutter system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rain gutter system that can apply a high drainage suction force to surely improve drainability of rain water in a rain gutter.SOLUTION: A rain water gutter system A comprising an eaves gutter 1 and a down pipe 4 connected to a chute 2 of the eaves gutter 1 is provided with a high drainage mechanism 6 for improving drainability of rain water flowing into the eaves gutter 1. The high drainage mechanism 6 includes: a water suction pipe 7 that has a water suction hole 10b for taking in the rain water in the eaves gutter 1 and is disposed along an extending direction T2 of the eaves gutter 1; and a negative pressure induction pipe 8 that has a negative pressure induction part 8a connected to the water suction pipe 7 at one end thereof, disposed in the down pipe 4 through the chute 2 of the eaves gutter 1, and reducing a flow passage area of a part of an in-pipe flow passage R through which the rain water taken in from the inside of the water suction pipe 7 flows.

Description

  The present invention relates to a rain gutter system for draining rain water into a drain pipe.

  Conventionally, in houses, etc., there are eaves that receive rainwater flowing down from the roof, and eaves that are connected to the eaves via a collector or call and guide the rainwater collected in the eaves to the drain pipe. A rain gutter system is installed. Moreover, in order to absorb the displacement / deformation due to thermal expansion and contraction or the like, the trough is slidably connected to a cylindrical drain pipe cover attached to the drain pipe at its lower end side.

  On the other hand, this type of rain gutter system is required to increase the amount of drainage per unit time without impairing the appearance of a house or the like so that rainwater can be suitably discharged into a drain pipe even during heavy rain. .

  On the other hand, for example, in Patent Document 1 and Patent Document 2, the bottom portion of the eaves bowl including the water collector has a double structure, and a siphon conduit is provided over the entire length of the eave bowl, and further from the inside of the eaves bowl. A rain gutter system having a water inlet leading to a siphon pipe is disclosed. In addition, the kite is installed with its upper end connected to the siphon conduit of the eaves.

  In this rain gutter system, when the siphon pipe and the vertical siphon pipe at the bottom of the eaves are filled with rain water during heavy rain, negative pressure is generated in the vertical siphon and the rain water in the eaves is caused by the siphon action. Is sucked in from the water inlet and pulled down from the siphon pipe to the vertical siphon pipe at a higher speed than natural fall. As a result, the amount of drainage per unit time can be increased without deteriorating the appearance of a house or the like, and a large amount of rainwater can be efficiently drained during heavy rain.

JP 2004-251075 A JP 2008-150948 A

  On the other hand, in the conventional siphon type rain gutter system, a bottom plate is formed with a space between the bottom of the eaves and the bottom of the eaves is made into a double structure, thereby forming a siphon conduit. In addition, a water inlet for taking the rainwater flowing into the eaves into the siphon conduit will be drilled in the bottom plate. For this reason, the rainwater flowing into the eaves always flows on the bottom plate of the eaves when it rains, and the rainwater in the eaves is sucked into the siphon conduit from the water inlet opened on the upper surface of the eaves. As a result, the siphon pipe is circulated from the siphon pipe to the vertical siphon pipe and drained.

  For this reason, when a foreign object enters the eaves, the water intake opening on the upper surface of the bottom plate is likely to be clogged, and rainwater that has flowed into the eaves due to the clogging of the water intake is not drained into the siphon conduit. There was a risk of overflowing from the eaves.

  In addition, as described above, in the configuration where rainwater in the eaves siphon pipe and rainwater in the eaves through the water intake are pulled by the negative pressure generated in the vertical siphon pipe, the range of influence of negative pressure is However, there is a reality that the suction force works only within a range of, for example, about 3 m in the extending direction of the eaves from the eaves drop opening. For this reason, at a location 3 m or more away from the eave trap outlet, the water level in the eave trap is unlikely to decrease, and rainwater may overflow at this location during heavy rain.

  Furthermore, when manufacturing eaves with a double-structured bottom by extrusion molding or injection molding, the mold becomes complicated, and after extrusion molding or injection molding, a water inlet is provided on the bottom plate that forms the siphon conduit. Will be drilled. In this way, a complicated mold is required, and it is necessary to drill a water inlet for the molded eaves that are difficult to handle, which reduces the production yield and increases the cost of the eaves. there were.

  It is also possible to separately form a bottom plate for making the bottom of the eaves into a double structure and insert and install it inside the eaves after molding, but in this case as well, the bottom plate is predetermined on the inner surface of the eaves. Connection work in a narrow place such as fixing to a position is required, which also leads to a decrease in manufacturing yield and an increase in the cost of eaves.

  In order to solve the above problems, the present invention provides the following means.

  The rain gutter system according to claim 1 is a rain gutter system comprising an eaves gutter and a gutter connected to a drop port of the eave gutter, and improves the drainage capacity of rainwater flowing into the eave gutter. A high drainage mechanism, and the high drainage mechanism has a water intake port for taking in rainwater in the eaves wall, and a water absorption pipe disposed along the extending direction of the eaves wall; , One end is connected to the water absorption pipe, and is disposed in the tub through the eaves pit, and the flow area of a part of the pipe flow path through which rainwater flowing in from the water absorption pipe flows is reduced. And a negative pressure induction tube having a negative pressure induction part.

  The rain gutter system according to claim 2 is a rain gutter system comprising an eaves gutter and a gutter connected to the outlet of the eave gutter, and improves the drainage capacity of rainwater flowing into the eave gutter. A high drainage mechanism, and the high drainage mechanism has a water intake port for taking in rainwater in the eaves wall, and a water absorption pipe disposed along the extending direction of the eaves wall; , One end is connected to the water absorption pipe and the other end is connected to the eaves, and a part of the flow path in the pipe through which rainwater flowing in from the water absorption pipe flows is reduced. And a negative pressure induction tube having a negative pressure induction part.

  In the rain gutter system according to claim 1 and the rain gutter system according to claim 2, rain water that has flowed into the eaves gutter flows into the water suction pipe from the water suction port, and enters the inside of the negative pressure induction pipe from the water suction pipe. Flow path) and further drain in the tub. When a large amount of rainwater flows from the water absorption pipe to the negative pressure induction pipe during heavy rain, turbulence occurs due to the resistance of the negative pressure induction section that reduces the flow path area, and rainwater stays above the negative pressure induction section. Occurs, and the water absorption pipe and the negative pressure induction pipe are filled with rainwater. As described above, when the water absorption pipe and the negative pressure induction pipe are filled with rainwater and the water pressure exceeding the resistance of the negative pressure induction part acts on the negative pressure induction part, the accumulated rainwater flows down rapidly and negative pressure is generated. As a result, the rainwater in the eaves is pulled by the negative pressure and rapidly sucked in from the water intake, and the rainwater in the eaves can be drained at a higher speed than natural fall.

  And since such a high drainage mechanism is composed of a pipe body of a water absorption pipe and a negative pressure induction pipe, it is possible to install the water absorption pipe and the negative pressure induction pipe separately from the eaves and the eaves. it can. In addition, the eaves are formed with a water absorption port in a separate water absorption tube, and the water absorption port can be easily formed. This eliminates the need to pierce water inlets for complex molds and post-molded eaves that are difficult to handle, reducing the production yield and increasing the cost of eaves compared to conventional rain gutter systems. It becomes possible to deter.

  Further, the length of the water absorption pipe, the number of water intake ports, and the position can be easily set. For this reason, it is possible to form a water inlet with a position, number and shape in which foreign matter that has entered the eaves is less likely to be clogged. Can be prevented.

  Furthermore, the range of influence of negative pressure can be freely adjusted by adjusting the length of the water suction pipe, the number of water suction ports, and the position. As a result, it is possible to apply a suction force to a location 3 m or more away in the extending direction of the eaves with the eaves eaves as a starting point, and to rapidly drain rainwater in the eaves with negative pressure. Therefore, it is possible to reliably prevent rainwater from overflowing from the eaves during heavy rain.

  In addition, since the high drainage mechanism is constructed using the pipes of the water suction pipe and the negative pressure induction pipe, the high drainage mechanism can be attached to the existing rain gutter system. Capabilities can be easily improved. Furthermore, since the drainage capacity of the rain gutter system can be improved by the high drainage mechanism, for example, an effect that the number of drop openings can be reduced for eaves with a small drainage cross-sectional area is also obtained.

1 is a perspective view showing a rain gutter system according to a first embodiment of the present invention. 1 is a front view showing a gutter system according to a first embodiment of the present invention. It is the X1-X1 arrow view figure of FIG. It is a perspective view showing the modification of the water absorption pipe of the rain gutter system concerning a 1st embodiment of the present invention. It is a perspective view showing the modification of the water absorption pipe of the rain gutter system concerning a 1st embodiment of the present invention. In the rain gutter system according to the first embodiment of the present invention, the water level in the eaves is low and rain water does not flow into the water absorption pipe. In the rain gutter system concerning a 1st embodiment of the present invention, it is a figure showing the state where the water level in the eaves became high and rain water stayed in the negative pressure induction pipe. In the rain gutter system which concerns on 1st Embodiment of this invention, it is a figure which shows the state in which the rain water in the eaves is drained by the high drainage mechanism. It is a figure which shows the modification of the rain gutter system which concerns on 1st Embodiment of this invention. It is a figure which shows the modification of the rain gutter system which concerns on 1st Embodiment of this invention. It is a figure which shows the modification of the rain gutter system which concerns on 1st Embodiment of this invention. It is a front view which shows the rain gutter system which concerns on 2nd Embodiment of this invention.

  Hereinafter, a gutter system according to a first embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a gutter system (gutter) installed in a house or the like.

  As shown in FIGS. 1 and 2, a rain gutter system A according to the present embodiment includes an eave gutter 1 that receives rain water flowing from the eaves of a roof, and a water collector 3 that is attached to the eave gutter 1 and forms a drop opening 2. The upper end is connected to the outlet 2 of the eaves wall 1, and the wall 4 is disposed in the vertical direction T1 along the outer wall of a house or the like, and the wall 4 is attached to a drain pipe buried in the ground. And a drain pipe cover 5 that slidably supports the lower end side in the vertical direction. Moreover, the rain gutter system A of this embodiment is comprised including the high drainage mechanism 6 for improving the drainage capacity of the rainwater which flowed in the eaves 1 at the time of heavy rain.

  As shown in FIG. 2, the high drainage mechanism 6 of the present embodiment includes a water absorption pipe 7 disposed along the extending direction T <b> 2 of the eaves 1 and an upper end (one end) at the bottom of the eaves 1. A negative pressure induction tube 8 connected to the water absorption tube 7 and disposed in the ridge 4 through the drop opening 2 and along the vertical direction T1 which is the extending direction of the ridge 4, and the water absorption tube 7 and the negative pressure A coupling 9 for connecting the induction tube 8 is provided.

  The water absorption pipe 7, the negative pressure induction pipe 8, and the joint 9 are formed by extrusion molding or injection molding using a thermoplastic synthetic resin such as polycarbonate, polyvinyl chloride, or polyolefin. Furthermore, the water absorption pipe 7 and the negative pressure induction pipe 8 are formed with an outer diameter of about 35 to 60 mm, for example.

As shown in FIG. 1, the water absorption pipe 7 of the present embodiment is a cylindrical body that is formed by extrusion molding or injection molding and is open at both ends, and is an opening opposite to the opening that opens to the water collector 3 side. A plurality of water absorption holes 10b are provided at the end on the part 10a side.
This water absorption hole 10b is a through hole provided so that rainwater can be taken also from the radial direction of the water absorption pipe 7 as shown in FIG. The opening 10 a and the water absorption hole 10 b constitute a water intake 10 for taking rainwater into the water absorption pipe 7.

 Here, the water inlet 10 is not necessarily limited to the one constituted by the opening 10a and the water absorption hole 10b drilled on the opening 10a side of the water absorption pipe 7, but the position and shape of the water absorption hole 10b. May be set as appropriate. Specifically, as shown in FIG. 4, the water absorption hole 10b of the water absorption port 10 may be provided in a circular shape with a predetermined interval in the extending direction T2 of the water absorption tube 7, or FIG. As shown in FIG. 1, one or a plurality of slits 10c extending in a predetermined dimension in the extending direction T2 of the water absorption pipe 7 may be used instead of the water absorption hole 10b. The slit 10c is for opening the end of the water absorption pipe 7 in the radial direction. In addition, when forming the water absorption pipe | tube 7 provided with the water inlet 10 which has a slit shown in FIG. 5, a slit can be formed simultaneously with shaping | molding of the water absorption pipe | tube 7 by extrusion molding or injection molding, and a water absorption hole is formed after shaping | molding. The work of drilling 10b can be made unnecessary.

  As shown in FIG. 1, the negative pressure induction tube 8 a is inserted, for example, into a flange 4 having an outer diameter of about 60 to 100 mm, and a gap H is provided between the outer surface and the inner surface of the flange 4. Has been. Further, the negative pressure induction tube 8 of the present embodiment includes a tube including a negative pressure induction portion 8a that induces a negative pressure for pulling rainwater in the eaves wall 1 and draining it at a higher speed than natural falling, and this negative pressure. A pipe not provided with the induction part 8 a is connected and formed with a length substantially the same as that of the gutter 4, and the lower end (the other end) is provided in the drain pipe cover 5.

  The negative pressure inducing portion 8 a is formed so that the flow passage area of a part of the pipe flow passage R through which rainwater taken from the inside of the water absorption pipe 7 flows is smaller than the other part of the negative pressure induction pipe 8. Yes. For example, the negative pressure inducing portion 8a is formed by narrowing the negative pressure inducing tube 8 so that the inner diameter and the outer diameter are smaller than other portions as shown in FIG. It is formed by providing a protruding portion that protrudes inward. Moreover, it is preferable to form this negative pressure induction part 8a so that it may be distribute | arranged to the downward position, for example, 1 m or more from the drop mouth 2 of the eaves bowl 1.

  Next, the operation and effect of the rain gutter system A having the above configuration will be described.

  In the rain gutter system A of this embodiment, as shown in FIGS. 1 and 6, the negative pressure induction pipe 8 is formed with an outer diameter smaller than the inner diameter of the gutter 4. A gap H is formed between the outer surface of 8 and the inner surface of the drop opening 2 and between the outer surface of the negative pressure induction tube 8 and the inner surface of the flange 4. For this reason, during normal rain, the rainwater W in the eaves wall 1 flowing into the eaves wall 1 from the roof flows into the water absorption pipe 7 from the opening 10a of the water absorption pipe 7 and flows through the in-pipe channel R. It flows outside the water absorption pipe 7, flows down from the outlet 2 through the eaves 4 using the gap H between the outer surface of the negative pressure induction pipe 8 and the inner surface of the eaves 4 as a flow path, and is discharged to the drain pipe.

  On the other hand, as shown in FIGS. 1 and 7, during heavy rain, rainwater W flows in the pipe flow path R and the gap H as in normal times, but the negative pressure induction pipe 8 includes a part of the pipe flow path R. Since the negative pressure inducing portion 8a having a smaller flow area is provided, the rainwater W that has flowed into the in-pipe flow path R flows into the negative pressure induction pipe 8 at a certain flow rate or more, thereby causing a negative pressure. The induction part 8a becomes a resistance and becomes a turbulent flow, and starts to stay in the negative pressure induction pipe 8 above the negative pressure induction part 8a. When the rainwater W further flows into the negative pressure induction pipe 8, the negative pressure induction pipe 8 and the water absorption pipe 7 are filled with the rainwater W (W ′), and the water pressure (rainwater according to the water level of the rainwater W in the eaves 1 is stored. W's own weight) acts on the negative pressure inducing portion 8a.

  Thus, when the water pressure according to the water level of the rainwater W in the eaves 1 acts on the negative pressure inducing part 8a, as shown in FIGS. 1 and 8, this water pressure exceeds the resistance force of the negative pressure inducing part 8a, The staying rainwater W ′ suddenly flows down in the negative pressure induction pipe 8, and the lower part of the negative pressure induction part 8a is in a reduced pressure state to generate a negative pressure. As a result, the rainwater W ′ in the water absorption pipe 7 is pulled into the negative pressure induction pipe 8, and the rainwater W in the eaves bowl 1 is sucked into the water absorption pipe 7 from both the opening 10a and the water absorption hole 10b. The rainwater W in the eaves 1 is repeatedly drained at a higher speed than the natural fall, and the rainwater W in the eaves 1 is repeatedly turbulent and abruptly flowing in the negative pressure inducing part 8a. The water is continuously drained at a large flow rate and flow rate.

  Further, at this time, as shown in FIG. 1, the water absorption pipe 7 is disposed in the eaves bowl 1, and the water absorption hole 7b is provided in the water absorption pipe 7. Therefore, the length of the water absorption pipe 7 and the water absorption hole 10b are set. By adjusting the number and position of the water intake pipe 7, it is possible to freely set the negative pressure influence range, that is, the action range of the suction force for sucking the rainwater W in the eaves 1. For this reason, even if it is the rainwater W of the location where the distance L of the extending direction T2 of the eaves 1 is 3 m or more from the dropping port 2 of the eaves 1, the length of the water absorption pipe 7 and the number of the water absorption holes 10b, By simply adjusting the position, the suction force acts reliably and drains rapidly. As described above, the rainwater W at the location where it is difficult to apply the suction force and the water level is difficult to decrease in the conventional rain gutter system is drained rapidly, and the rain water W may overflow from the eaves 1 during heavy rain. It is surely prevented.

  Furthermore, in the rain gutter system A of the present embodiment, the rain water W in the eaves cage 1 is M between the outer surface of the water suction pipe 7 and the inner surface of the eave cage 1 shown in FIG. It flows also into M between the side walls 1a, and flows into the ridge 4 from the dropping port 2. For this reason, compared with the rain gutter system which made the bottom part of the conventional eaves bowl into the double structure, even if it is a case where a foreign material enters in the eaves bowl 1, the water absorption hole 10b becomes difficult to clog.

  Moreover, as shown in FIGS. 1 to 3, in this embodiment, the high drainage mechanism 6 is provided as a separate body from the eaves 1 and 4, and a pipe body of a water absorption pipe 7 and a negative pressure induction pipe 8 is used. Configured. And since the water absorption hole 10b is formed in the separate water absorption pipe 7 with the eaves bowl 1, the water absorption hole 10b is pierced with respect to the eaves bowl 1 after the complicated metal mold | die and the shaping | molding which is difficult to handle. No work is required, and the water absorption hole 10b can be easily drilled.

  Therefore, in the rain gutter system A of the present embodiment, the water absorption pipe 7 and the negative pressure inducing pipe 8 are filled with the rain water W ′ (W) during heavy rain, and the water pressure exceeding the resistance force of the negative pressure inducing part 8a induces the negative pressure. While acting on the part 8a, the accumulated rainwater W ′ flows down rapidly and negative pressure is generated. As a result, the rainwater W in the eaves 1 is pulled by the negative pressure and rapidly sucked in from the water inlet 10, and the rainwater W in the eaves 1 can be drained at a higher speed than natural fall.

  In addition, since the high drainage mechanism 6 is configured by using the pipe body of the water absorption pipe 7 and the negative pressure induction pipe 8, the water absorption pipe 7 and the negative pressure induction pipe 8 are separately formed from the eaves 1 and 4. In addition, the water absorption hole 10b can be easily formed by forming the water absorption port 10 in the water absorption pipe 7 separate from the eaves bowl 1. This eliminates the need for drilling the water absorption holes 10b in the complex eaves and the molded eaves 1 that are difficult to handle, lowering the manufacturing yield and increasing the eaves 1 in comparison with the conventional rain gutter system. Costs can be suppressed.

  Moreover, the length of the water absorption pipe | tube 7, the number of the water absorption holes 10b, and a position can be set easily. For this reason, the water absorption hole 10b can be formed in a position, number, and shape in which foreign matter that has entered the eaves bowl 1 is less likely to be clogged. It can prevent overflowing.

  Further, the influence range of the negative pressure can be freely adjusted by adjusting the length of the water absorption pipe 7 and the number and position of the water absorption holes 10b. Thereby, even if the distance L in the extending direction T2 of the eaves 1 is 3 m or more from the dropping port 2 of the eaves 1 as a starting point, a suction force can be applied. Can be drained rapidly by negative pressure. Therefore, it is possible to reliably prevent the rainwater W from overflowing from the eaves 1 during heavy rain.

  Further, since the high drainage mechanism 6 is constituted by using the pipe body of the water suction pipe 7 and the negative pressure induction pipe 8, the water suction pipe 7 having the water suction port 10 can be simply installed in the eaves 1. 7 can be easily disposed along the extending direction T2 of the eaves rod 1. Also, the negative pressure induction tube 8 can be easily arranged by simply inserting the negative pressure induction tube 8 into the rod 4 through the outlet 2 of the eaves rod 1 and connecting the upper end of the negative pressure induction tube 8 to the water absorption tube 7 using the joint 9. Can be set. For this reason, the high drainage mechanism 6 can be easily attached to an existing gutter system, and the drainage capacity of the existing gutter system can be easily improved. Furthermore, since the drainage capacity of the rain gutter system A can be improved by the high drainage mechanism 6, for example, the effect that the number of the drop openings 2 can be reduced with respect to the eaves 1 having a small drainage cross-sectional area is also obtained. .

  Further, during heavy rain, the high drainage mechanism 6 can generate a negative pressure to drastically drain the rainwater W in the eaves wall 1, and the outer surface of the negative pressure induction pipe 8 and the wall 1 from the outlet 2. The rain water W in the eaves wall 1 can be drained by circulating the flow path H between the inner surfaces of the eaves. Thereby, the drainage capacity of the rainwater W in the eaves can be further improved.

  The first embodiment of the rain gutter system according to the present invention has been described above, but the present invention is not limited to the first embodiment described above, and can be changed as appropriate without departing from the spirit of the present invention. For example, in this embodiment, the water absorption pipe 7 and the negative pressure induction pipe 8 are connected to each other in FIGS. 1 and 2 using an elbow (joint 9), and the extending direction T2 of the eaves 1 with the drop opening 2 as a base point. However, as shown in FIG. 9, for example, as shown in FIG. 9, the water absorption pipe 7 and the negative pressure induction pipe 8 are connected by using a joint 9 such as cheese. The water absorption pipes 7 may be disposed in one direction and the other direction in the extending direction T2 of the eaves bowl 1 with reference to 2.

  In the present embodiment, the high drainage mechanism 6 is configured by disposing the water absorption pipe 7 in the eaves bowl 1. However, the water absorption pipe 7 of the high drainage mechanism according to the present invention is the eaves bowl 1. What is necessary is just to be provided with the water inlet 10 which takes in the rain water W in the inside, and to be arrange | positioned along the extending direction T2 of the eaves rod 1, for example, as shown in FIG. Alternatively, the water absorption pipe 7 attached to the eaves 1 may be disposed so that the slit 10c is opened to a predetermined size. In this case, the end of the water absorption pipe 7 opposite to the end connected to the negative pressure induction pipe 8 is closed by a lid or the like. When the water absorption pipe 7 has such a configuration, foreign matter is clogged in the entire water absorption hole 10b, and it becomes easy to prevent the rainwater W in the eaves bowl 1 from flowing into the water absorption pipe 7.

  Further, in the present embodiment, the negative pressure induction pipe 8 is provided with the lower end disposed in the drain cover 5, but the lower end is disposed in the middle of the ridge 4 as shown in FIG. 11, for example. Thus, the negative pressure induction tube 8 may be formed short. Even in this case, it is possible to obtain the same effect as that of the present embodiment.

  Next, a rain gutter system according to a second embodiment of the present invention will be described with reference to FIG. As in the first embodiment, the present embodiment relates to a rain gutter system installed in a house or the like, and differs from the first embodiment only in the configuration of the high drainage mechanism. For this reason, in this embodiment, the same code | symbol is attached | subjected with respect to the structure similar to 1st Embodiment, and the detailed description is abbreviate | omitted.

  As shown in FIG. 12, the rain gutter system B according to the present embodiment is similar to the first embodiment in that the eaves 1, 4, the drain pipe cover 5, and rainwater that has flowed into the eaves 1 during heavy rain. A high drainage mechanism 11 for improving the drainage capacity of W is provided.

  Moreover, the high drainage mechanism 11 connects the water absorption pipe 7 arrange | positioned along the extending direction T2 of the eaves fence 1 and the upper end (one end) to the water absorption pipe 7 in the bottom part in the eaves eaves 1, 1 is provided with a negative pressure induction pipe 12 arranged to circulate the rainwater W taken from 1 into the water absorption pipe 7 in the gutter 4, and a joint 9 connecting the water absorption pipe 7 and the negative pressure induction pipe 12. Configured.

  On the other hand, in the high drainage mechanism 11 of the present embodiment, an insertion hole 13 is formed in the bottom of the eaves 1 separately from the drop opening 2, and the upper end side of the joint 9 or the negative pressure induction pipe 12 is inserted into the insertion hole 13. The water absorption pipe 7 and the negative pressure induction pipe 12 are connected. Further, a joining member 14 is provided between the upper end and the lower end of the flange 4. By connecting the lower end (the other end) of the negative pressure inducing tube 12 to the joining member 14, the negative pressure inducing tube 12 is formed. The lower end thereof is arranged connected to the flange 4. Further, as shown in FIG. 12, the negative pressure induction tube 12 has a negative flow area in which a part of the internal flow channel R inside the negative pressure induction tube 12 is reduced, as in the first embodiment. A pressure inducing portion 12a is provided.

  And in the rain gutter system B of this embodiment comprised in this way, as shown in FIG. 12, the rainwater W in the eaves gutter 1 which flowed into the eave gutter 1 from the roof at the time of normal rain is the water absorption pipe 7 inside. Through the in-pipe flow path R or from the outlet 2 into the tub 4 and discharged to the drain pipe.

  On the other hand, when a large amount of rainwater W flows into the eaves 1 during heavy rain, the rainwater W flows in the eaves 4 from the pipe flow path R and the outlet 2 in the same manner as normal. However, since the negative pressure inducing pipe 12 is provided with the negative pressure inducing section 12a that reduces the flow area of a part of the in-pipe flow path R, as in the first embodiment, the rainwater W having a certain flow rate or more is provided. Flows into the negative pressure induction pipe 12, the rain water W turbulently flows in the negative pressure induction part 12a, and the rain water W begins to stay in the negative pressure induction pipe 12 above the negative pressure induction part 12a. And if the negative pressure induction pipe 12 and the water absorption pipe 7 are filled with rain water W, and the water pressure according to the water level of the rain water W in the eaves 1 acts on the negative pressure induction part 12a, the staying rain water W 'will be negative pressure. While the inside of the induction | guidance | derivation pipe 12 flows down rapidly, the downward direction of the negative pressure induction part 12a will be in a pressure-reduced state, and a negative pressure will generate | occur | produce.

  Thereby, the rain water W ′ in the water absorption pipe 7 is pulled into the negative pressure induction pipe 12, and the rain water W in the eaves 1 is sucked into the water absorption pipe 7 from the water absorption hole 10 b. Then, the rainwater W in the fence 4 flowing in from the outlet 2 of the eaves fence 1 and the rainwater W ′ drained from the lower end connected to the fence 4 of the negative pressure induction pipe 12 merge in the fence 4. Then, the rain water W in the eaves 1 is drained at a higher speed than the natural fall. In addition, the rainwater W in the eaves 1 is repeatedly drained at a large flow rate and flow rate by repeating turbulent flow and rapid flow in the negative pressure inducing section 12a while a large amount of rainwater W flows in the eaves 1. .

  At this time, the rainwater W flowing down from the eaves 2 of the eaves 1 in the eaves 4 and the rainwater W ′ discharged from the negative pressure induction pipe 12 merge to drain into the drainage pipe. Is done. For this reason, a negative pressure is generated at the junction 15 of the negative pressure induction pipe 12 and the eaves 4 by the rainwater W flowing down from the outlet of the eave eave 1, and the rainwater W ′ flowing through the negative pressure induction pipe 12 is 4 is sucked into. That is, by arranging the lower end of the negative pressure induction pipe 12 connected to the gutter 4, the gutter 4 of the gutter system B and the negative pressure induction pipe 12 are configured as an ejector.

  Thereby, in the rain gutter system B of this embodiment, the rain water W in the eaves gutter 1 is drained from the dropping port 2 to the gutter 4 at the time of heavy rain, and negative pressure is induced by the negative pressure inducing part 12a of the negative pressure inducing pipe 12. The rainwater W in the eaves wall 1 is suddenly drained into the eaves 4 by generating pressure, and the negative pressure induction pipe 12 and the eaves are caused by the rainwater W flowing down the eaves 4 from the outlet 2 of the eaves wall 1. A negative pressure is generated at the junction 15 of the eaves 4, and rainwater W in the eaves 1 is drained into the eaves 4 more rapidly.

  Therefore, in the rain gutter system B of the present embodiment, when a large amount of rainwater W flows from the water suction pipe 7 to the negative pressure induction pipe 12 during heavy rain, a turbulent flow is generated in the negative pressure induction section 12a, and the water absorption pipe 7 and the negative pressure The trigger pipe 12 is filled with the rain water W, and the rain water W ′ staying inside the water suction pipe 7 and the negative pressure induction pipe 12 flows down rapidly and is drained into the eaves 4, which is faster than the natural fall. It becomes possible to drain the rainwater W inside.

  Moreover, the rain gutter system B of this embodiment is comprised like an ejector by connecting the lower end of the negative pressure induction pipe 12 to the gutter 4 at this time, and arrange | positioning. For this reason, in the case of heavy rain, the negative pressure inducing section 12a of the negative pressure inducing pipe 12 can generate a negative pressure so that the rain water W in the eaves 1 can be drained rapidly. The rain water W flowing down from the mouth 2 in the eaves 4 generates a negative pressure in the negative pressure induction pipe 12 and the junction 15 of the eaves 4, and it becomes possible to drain the rain water W in the eaves 1 more rapidly. . Therefore, it becomes possible to further improve the drainage capacity of the rainwater W in the eaves 1.

  In the rain gutter system B of the present embodiment, the high drainage mechanism 11 is configured by using the pipe body of the water absorption pipe 7 and the negative pressure induction pipe 12, and thus the same operation as that of the first embodiment by this configuration. An effect can be obtained.

  The second embodiment of the rain gutter system according to the present invention has been described above. However, the present invention is not limited to the second embodiment described above, and departs from the spirit of the present invention, including modifications of the first embodiment. It is possible to change appropriately within the range not to be.

1 eaves 1a side wall 1b bottom 2 drop 3 water collector 4 eaves 5 drainage pipe cover 6 high drainage mechanism 7 water intake pipe 8 negative pressure induction pipe 8a negative pressure induction part 9 joint 10 water intake 11 high drainage mechanism 12 negative pressure Induction tube 12a Negative pressure induction part 13 Insertion hole 14 Joining member 15 Junction part A Gutter system B Gutter system H Gap (flow path) between negative pressure induction pipe and gutter
L Distance in the extending direction of the eaves M Between the water absorption pipe and the side wall of the eaves R Pipe flow path T1 Vertical direction T2 Extending direction W Rain water W 'Rain water

Claims (2)

A rain gutter system comprising an eaves gutter and a gutter connected to the eaves gutter,
It is equipped with a high drainage mechanism for improving the drainage capacity of rainwater that flows into the eaves,
The high drainage mechanism has a water inlet for taking in rainwater in the eaves, and a water absorption pipe disposed along the extending direction of the eaves,
One end is connected to the water absorption pipe, and is arranged in the tub through the eaves pit, and the flow area of a part of the pipe flow path through which rainwater taken from the water absorption pipe flows is reduced. A rain gutter system comprising: a negative pressure induction pipe having a negative pressure induction part. A rain gutter system comprising an eaves gutter and a gutter connected to the eaves gutter,
It is equipped with a high drainage mechanism for improving the drainage capacity of rainwater that flows into the eaves,
The high drainage mechanism has a water inlet for taking in rainwater in the eaves, and a water absorption pipe disposed along the extending direction of the eaves,
One end is connected to the water absorption pipe and the other end is connected to the eaves, and the negative flow path is formed by reducing the flow area of a part of the internal flow path through which rainwater taken from the inside of the water absorption pipe flows. A rain gutter system comprising a negative pressure induction pipe having a pressure induction part.

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