Gutter system
Patent Information
- Application Number
- JP2024173814
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-02
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2040-09-23
AI Technical Summary
Conventional elbows in rain gutter systems experience inefficiencies in water drainage due to turbulent flow and backflow, particularly when large volumes of water cause reflections within the elbows, leading to overflow.
The elbow design features a straight pipe portion connecting two sockets with intersecting axes, allowing for a direct change in flow direction without an arcuate shape, promoting efficient water flow and siphon effect within the pipe.
This design enhances drainage efficiency by minimizing flow disturbances and increasing the likelihood of a siphon phenomenon, allowing for effective water conveyance without the need for larger pipe diameters, thus improving economic efficiency and construction ease.
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Abstract
Description
[Technical field]
[0001] The present invention relates to an elbow and gutter system. [Background technology]
[0002] Generally, buildings are provided with gutters to catch rainwater that runs off the roof and channel it to the ground. A gutter is made up of a combination of multiple components, such as an eaves gutter, a water collector, a downspout, a vertical gutter, a connecting pipe, an elbow joint, and a tee joint (hereinafter, each joint will be simply referred to as an elbow or a tee). In recent years, in order to increase the drainage capacity of gutters, a siphon gutter system has been proposed that fills the vertical gutter with water, generating a water suction effect (the so-called siphon phenomenon) and dramatically increasing the amount of drainage (see Patent Document 1). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2019-120068 A Summary of the Invention [Problem to be solved by the invention]
[0004] In the gutter system, elbows are used as joints to connect various gutters and connecting members in the part where rainwater is changed from vertical to horizontal (or from horizontal to vertical). Conventionally standardized elbows include, for example, 90° bent elbows (so-called DL).
[0005] When wastewater flows through a bent elbow, if the amount of wastewater is not enough to cause the siphoning phenomenon, i.e., if the amount is small or medium compared to the pipe diameter, the wastewater will flow near the bottom of the downspout due to gravity. When the wastewater flows into the downspout through the bent elbow, the wastewater will collide with the outside of the bend of the bent elbow and the inner wall of the outside of the bend in the downspout connected to the bent elbow due to inertia. The wastewater will then flow down the inner wall of the outside of the bend in the downspout.
[0006] When the amount of wastewater that causes the siphon phenomenon in the gutter, that is, when a large amount of wastewater flows relative to the pipe diameter, the wastewater flows at an increased flow rate near the bottom of the downspout. However, in a conventional bent elbow, the outside of the bend is in an arc shape. Therefore, for example, when wastewater that flows in from the downspout with force collides with the inner wall of the outside of the bend of the bent elbow, the wastewater flows so as to be reflected by the inside of the bend of the elbow and the inner wall of the inside of the bend of the downspout connected to the bent elbow. The wastewater that collides with the inside of the bend is again reflected by the outside of the bend of the elbow and the inner wall of the outside of the bend of the downspout connected to the bent elbow. Since the wastewater flows down the downspout while repeating such movements, the flow in the pipe becomes turbulent and is not efficiently drained.
[0007] As a result, the wastewater flowing forcefully through the downspout cannot flow completely through the downspout, and a backflow occurs from the downspout to the downspout, causing problems such as the backflowing wastewater overflowing from the eaves gutter.
[0008] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide an elbow and gutter system that efficiently allows wastewater flowing in from a downspout to flow down a downspout. [Means for solving the problem]
[0009] In order to solve the above problems, the present invention proposes the following means. The elbow of the present invention comprises a first receiving port, a second receiving port, and a straight pipe section connecting the upper first receiving port and the second receiving port, wherein the axis of the first receiving port intersects with the axis of the straight pipe section, and the axis of the straight pipe section intersects with the axis of the second receiving port.
[0010] According to this invention, the axis of the first socket intersects with the axis of the straight pipe portion, and the axis of the straight pipe portion intersects with the axis of the second socket. For this reason, the straight pipe section of the elbow can change the direction of the wastewater flow from the first receiver to the second receiver. Furthermore, the part that changes the flow direction has a straight pipe shape and does not have an arc shape. By making it in this shape, when the wastewater from the first receiver collides with the straight pipe section, the flow direction of the wastewater is directly changed from the first receiver to the second receiver. Furthermore, by not having an arc shape, the straight pipe section is more likely to be filled with wastewater compared to when it has an arc shape. This makes it easier for the siphon phenomenon to occur in the drain pipe. As a result, the wastewater can be sent downstream more efficiently.
[0011] Moreover, an axis of the first socket, an axis of the straight pipe portion, and an axis of the second socket may be located on the same plane.
[0012] According to this invention, the axis of the first socket, the axis of the straight pipe section, and the axis of the second socket are located on the same plane. This allows the length of the straight pipe section to be kept to a minimum. This shortens the path through which the wastewater flows, allowing for more efficient drainage. Furthermore, the smaller size of the elbow allows for an elbow with excellent design.
[0013] Also, an axis of the first socket and an axis of the second socket may be perpendicular to each other.
[0014] According to this invention, the axis of the first receiver and the axis of the second receiver are perpendicular to each other. By adopting such a shape, the flow of wastewater flowing into the first receiver can be bent 90° as it approaches the second receiver. Therefore, for example, when drainage water flowing through the lower pipe is made to flow down into the downpipe, it is not necessary to give the lower pipe a slope. Therefore, the lower pipe can be installed horizontally to the building, improving its appearance.
[0015] Furthermore, on the inner peripheral side of the elbow in a front view of the plane from the front, the straight pipe section may be formed by directly connecting the first socket and the second socket.
[0016] According to this invention, the straight pipe portion is formed by directly connecting the first socket and the second socket, that is, the length of the straight pipe portion is minimized. By adopting this shape, when the wastewater that flows into the straight pipe section through the first receiving port hits the inner wall of the straight pipe section, it flows down so as to be directly reflected toward the second receiving port. This allows the wastewater to be drained more efficiently without being disturbed in the flow direction inside the drain pipe. Furthermore, a smaller elbow can be provided, improving the appearance.
[0017] The gutter system may also include the above-mentioned lower gutter, the elbow whose first receiving port is connected to the downstream end of the lower gutter, and a downpipe connected to the second receiving port of the elbow, and rainwater flowing through the lower gutter is drained into the downpipe via the elbow.
[0018] According to this invention, there is provided a call down pipe, an elbow having a first socket connected to the downstream end of the call down pipe, and a down pipe connected to a second socket of the elbow. In other words, an elbow that has the effect of improving drainage performance is provided between the downpipe and the downpipe. This improves the inflow and drainage of water into the downpipe. This makes it easier for the inside of the downpipe to fill with drainage water. In other words, the water filling rate inside the downpipe can be improved. This makes it easier for the siphon phenomenon to occur inside the downpipe, for example. This makes it possible to drain large amounts of water. In other words, there is no need to increase the pipe diameter of the downpipe and the downpipe. This makes it possible to provide a gutter system that is economical and easy to install.
[0019] The straight pipe portion may have a flow path cross-sectional area smaller than a flow path cross-sectional area of the downpipe and a flow path cross-sectional area of the downpipe.
[0020] According to this invention, the flow cross-sectional area of the straight pipe section is smaller than the flow cross-sectional area of the downpipe and the downpipe. This makes it easier for the straight pipe section to be filled with wastewater when the wastewater flowing down from the downpipe is redirected toward the downpipe by the straight pipe section of the elbow. In other words, the siphon phenomenon is more likely to occur in the drain pipe. This makes it possible to more efficiently send wastewater downstream. Effect of the Invention
[0021] According to the present invention, an elbow and gutter system can be provided that efficiently allows wastewater flowing in from a downspout to flow down a downspout. [Brief description of the drawings]
[0022] [Figure 1] FIG. 1 is a side view of a gutter system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of an elbow in the system. [Diagram 3] FIG. 3 is a perspective view of the elbow shown in FIG. 2. [Figure 4] FIG. 3 is a side view of the elbow shown in FIG. 2. [Diagram 5] FIG. 5 is a cross-sectional view of the elbow shown in FIG. [Figure 6]FIG. 2 is a cross-sectional view showing the flow of drainage water in a gutter system according to an embodiment of the present invention. [Figure 7] FIG. 2 is a cross-sectional view showing the flow of wastewater when the elbow in the system has an arc shape. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] Hereinafter, a rainwater drainage device and an elbow according to an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, a rainwater gutter system 100 installed in a building or the like includes a first elbow 10, a lower gutter 20, a vertical gutter 30, an eaves gutter 40, a drainage member 50, and a second elbow 60. Rainwater (drainage) 90 (described later) that flows into the eaves gutter 40 flows down through the space between the second elbow 60, the lower gutter 20, the first elbow 10, and the downpipe 30. The rainwater 90 that flows down the downpipe 30 is drained into a drainage facility (not shown).
[0024] The lower gutter 20 horizontally transports the rainwater 90 that flows down from the eaves gutter 40 through the second elbow 60. The rainwater 90 that flows down into the lower gutter 20 is transported toward the downpipe 30. The downpipe 30 may be unavoidably provided at a location away from the eaves gutter 40 due to requirements such as the layout of the building in which the rain gutter system is installed. In such a case, the lower gutter 20 connects between the eaves gutter 40 and the downpipe 30. This transports the rainwater 90 (described later) collected in the lower gutter 20 to the downpipe 30. For this reason, the lower gutter 20 is installed at a height near the eaves gutter 40, that is, near the roof of the building. In this embodiment, the lower gutter 20 has a hollow cylindrical shape.
[0025] The downspout 30 transports the rainwater 90 that flows down from the lower pipe 20 via the first elbow 10 to a drainage facility near the ground. That is, the downspout 30 is installed vertically to the building. In this embodiment, the downspout 30 has a hollow cylindrical shape similar to the lower pipe 20. Furthermore, the inner diameter and outer diameter of the downspout 30 and the lower pipe 20 are equal.
[0026] The eaves gutter 40 is provided on the edge of the roof of the building. The eaves gutter 40 collects rainwater 90 that falls on the roof of the building. The rainwater 90 collected by the eaves gutter 40 flows down to the lower gutter 20 via the second elbow 60.
[0027] The drainage member 50 is installed between the eaves gutter 40 and the second elbow 60. When a large amount of rainwater 90 is collected in the eaves gutter 40, the drainage member 50 causes a siphon effect in the piping below the second elbow 60. This causes the piping below the second elbow 60 to be filled with rainwater 90. This improves drainage efficiency. This prevents the rainwater 90 from overflowing from the eaves gutter 40 during heavy rain, etc.
[0028] The second elbow 60 transports rainwater 90 flowing down from the eaves gutter 40 to the call gutter 20. The second elbow 60 is installed directly below a hole provided in the eaves gutter 40. In this embodiment, the second elbow 60 transports rainwater 90 flowing down from the eaves gutter 40 directly above to the call gutter 20 installed horizontally. Therefore, the bending angle of the second elbow 60 is 90°.
[0029] As shown in Fig. 6, the first elbow 10 is provided between the lower pipe 20 and the downpipe 30 so as to facilitate the siphoning phenomenon in the downpipe 30. The first elbow 10 transports rainwater 90 flowing down from the lower pipe 20 to the downpipe 30. In this embodiment, the first elbow 10 is provided between the lower pipe 20 installed horizontally and the downpipe 30 installed vertically. That is, the bending angle of the first elbow 10 is 90°.
[0030] As shown in Figures 2 to 4, the first elbow 10 has a first socket 11, a straight pipe section 12, and a second socket 13. Here, the axis of the first socket 11 intersects with the axis of the straight pipe section 12, and the axis of the straight pipe section 12 intersects with the axis of the second socket 13. In addition, the axis of the first socket 11, the axis of the straight pipe section 12, and the axis of the second socket 13 are located on the same plane. Furthermore, the axis of the first socket 11 and the axis of the second socket 13 are perpendicular to each other. 5, the first socket has a first bottom 11a at its end on the straight pipe section 12 side. The second socket 13 has a second bottom 13a at its end on the straight pipe section 12 side.
[0031] 6, the downstream end of the call pipe 20 is connected to the first socket 11. At that time, the end of the call pipe 20 is inserted until it abuts against the first bottom portion 11a. Additionally, the upstream end of the downpipe 30 is connected to the second socket 13. At that time, the end of the downpipe 30 is inserted until it abuts against the second bottom portion 13a.
[0032] As described above, the inner diameter and the outer diameter are equal to those of the nominal downpipe 20 and the downpipe 30. The inner diameters of both ends of the straight pipe section 12, i.e., the first bottom portion 11a and the second bottom portion 13a, are equal to those of the nominal downpipe 20 and the downpipe 30, respectively. That is, the inner diameter of the first socket 11 is equal to the outer diameter of the downpipe 20. The inner diameter of the second socket 13 is equal to the outer diameter of the downpipe 30. As shown in Fig. 5, the straight pipe section 12 connects the first socket 11 and the second socket 13. Also, on the inner peripheral side of the first elbow 10 in a front view of the above-mentioned plane (the plane on which each axis is located) from the front, the straight pipe section 12 is formed by directly connecting the first socket 11 and the second socket 13. That is, the length of the straight pipe section 12 is minimized.
[0033] 5, the inner diameter 12a of the center of the straight pipe section 12 is smaller than the inner diameters of the first bottom 11a and the second bottom 13a. That is, the flow path cross-sectional area of the center of the straight pipe section 12 is smaller than the inner diameters of the nominal downpipe 20 and the downpipe 30. The flow path cross-sectional area here refers to the area of a cross section perpendicular to the axis in each of the nominal downpipe 20, the downpipe 30, and the straight pipe section 12.
[0034] The material of the first elbow 10 is preferably a synthetic resin such as hard polyvinyl chloride resin, polycarbonate, ABS, AES, etc. The molding method of the first elbow 10 is preferably injection molding.
[0035] Next, the flow of rainwater that has flowed down into the drain 20 will be described with reference to FIG. First, when rainwater 90 flows inside the downpipe 20, if the amount of rainwater 90 is not enough to cause the siphoning phenomenon, that is, if the amount is small or medium compared to the inner diameter of the downpipe 20, the rainwater 90 follows gravity and flows near the bottom of the downpipe 20. When the rainwater 90 flows into the downpipe 30 through the first elbow 10, the rainwater 90 follows inertia and collides with the outside of the bend of the first elbow 10 and the inner wall on the outside of the bend in the downpipe 30 connected to the first elbow 10. The rainwater 90 then flows down along the inner wall on the outside of the bend in the downpipe 30.
[0036] When rainwater 90 flows in an amount that causes a siphoning phenomenon in the downpipe 20, that is, when a large amount of rainwater 90 flows relative to the inner diameter of the downpipe 20, the rainwater 90 flows at an increased speed near the bottom of the downpipe 20. When this rainwater 90 flows forcefully into the first elbow 10, it collides with the inner wall on the outside of the bend in the straight pipe section 12. The rainwater 90 then flows as if being directly reflected toward the downpipe 30.
[0037] Here, as shown in FIG. 7, for example, when the call pipe 20 and the downpipe 30 are connected by the second elbow 60, the portion of the first elbow 10 corresponding to the straight pipe portion 12 is arc-shaped. When the rainwater 90 flowing in from the call pipe 20 hits the inner wall of the arc-shaped portion of the second elbow 60, the rainwater 90 flows so as to be reflected by the inner side of the bend of the second elbow 60 and the inner wall of the inner side of the bend of the downpipe 30 connected to the second elbow 60. The rainwater 90 that hits the inner side of the bend is again reflected by the inner wall side of the arc-shaped portion of the second elbow 60 and the inner wall of the outer side of the bend of the downpipe 30 connected to the second elbow 60. Since the rainwater flows into the downpipe 30 while repeating such a movement, the flow in the downpipe 30 is disturbed. In other words, the rainwater 90 is not efficiently drained.
[0038] As shown in Fig. 6, the first elbow 10 connects the first socket 11 and the second socket 13 via the straight pipe section 12. As a result, when rainwater 90 flowing in from the inlet pipe 20 collides with the inner wall of the straight pipe section 12, the rainwater 90 flows so as to be directly reflected in the direction of the downpipe 30. This allows the rainwater 90 to be efficiently drained without disturbing the flow inside the downpipe 30.
[0039] As described above, according to the first elbow 10 of this embodiment, the axis of the first socket 11 and the axis of the straight pipe section 12 intersect, and the axis of the straight pipe section 12 and the axis of the second socket 13 intersect. For this reason, the straight pipe section 12 of the first elbow 10 can change the flow direction of the rainwater 90 from the first receiver 11 to the second receiver 13. Furthermore, the part that changes the flow direction has a straight pipe shape and does not have an arc shape. By making it in this shape, when the rainwater 90 from the first receiver 11 hits the straight pipe section 12, the flow direction of the rainwater 90 is changed directly from the first receiver 11 to the second receiver 13. Furthermore, by not having an arc shape, the straight pipe section 12 is more likely to be filled with rainwater 90 compared to when it has an arc shape. This makes it easier for the siphon phenomenon to occur in the drain pipe. As a result, the rainwater 90 can be sent downstream more efficiently.
[0040] In addition, the axis of the first socket 11, the axis of the straight pipe section 12, and the axis of the second socket 13 are located on the same plane. This allows the length of the straight pipe section 12 to be kept to a minimum. This shortens the path through which rainwater 90 flows, allowing for more efficient drainage. Furthermore, by making the first elbow 10 smaller, it is possible to provide a first elbow 10 with excellent design.
[0041] In addition, the axis of the first socket 11 and the axis of the second socket 13 are perpendicular to each other. This shape allows the flow of rainwater 90 that flows into the first socket 11 to be bent 90° toward the second socket 13. Therefore, for example, when the rainwater 90 flowing through the call pipe 20 is made to flow down the downpipe 30, it is not necessary to give the call pipe 20 a slope. This allows the call pipe 20 to be installed horizontally to the building, improving its appearance.
[0042] Moreover, the straight pipe portion 12 is formed by directly connecting the first socket 11 and the second socket 13. That is, the length of the straight pipe portion 12 is minimized. With this shape, when rainwater 90 that flows into the straight pipe section 12 through the first receiving port 11 hits the inner wall of the straight pipe section 12, it flows down so as to be directly reflected toward the second receiving port 13. Therefore, the flow direction of the rainwater 90 is not disturbed inside the drain pipe, and it can be drained more efficiently. Furthermore, it is possible to provide a smaller first elbow 10, improving the appearance.
[0043] It also includes a call down pipe 20, a first elbow 10 having a first socket 11 connected to the downstream end of the call down pipe 20, and a down pipe 30 connected to a second socket 13 of the first elbow 10. That is, a first elbow 10 having the effect of improving drainage performance is provided between the downpipe 20 and the downpipe 30. This improves the inflow and drainage of water into the downpipe 30. This makes it easier for the inside of the downpipe 30 to be filled with rainwater 90. In other words, the water filling rate in the downpipe 30 can be improved. This makes it easier for the siphon phenomenon to occur in the downpipe 30, for example. This makes it possible to drain a large amount of water. In other words, it is no longer necessary to increase the pipe diameter of the downpipe 30 and the downpipe 20. This makes it possible to provide a rainpipe system 100 that is economical and easy to install.
[0044] In addition, the flow path cross-sectional area of the straight pipe section 12 is smaller than the flow path cross-sectional area of the downpipe 20 and the downpipe 30. This makes it easier for the straight pipe section 12 to be filled with rainwater 90 when the rainwater 90 flowing down from the downpipe 20 is redirected toward the downpipe 30 by the straight pipe section 12 of the first elbow 10. In other words, the siphon phenomenon is more likely to occur in the drain pipe. These factors allow the drainage water to be sent downstream more efficiently.
[0045] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0046] For example, the axis of first socket 11, the axis of straight pipe section 12, and the axis of second socket 13 do not have to be located on the same plane.
[0047] Furthermore, the axis of first socket 11 and the axis of second socket 13 do not have to be perpendicular to each other.
[0048] Moreover, the first socket 11 and the second socket 13 do not have to be directly connected.
[0049] In addition, within the scope of the invention, the components in the above-described embodiments may be replaced with well-known components, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]
[0050] 10 First elbow 11 First Underbite 12 Straight pipe section 13 Second underbite 20 Call pipe 30 Downpipe 90 Rainwater (drainage) 100 Gutter System
Claims
1. 1. A gutter system comprising: Eaves gutters and A drainage member installed on the bottom surface of the eaves gutter; a second elbow connected to the drainage member; a call downspout whose upstream end is connected to the second elbow; a first elbow connected to a downstream end of the outlet pipe; a downspout connected to the first elbow; Equipped with The first elbow is a first receiving port to which a downstream end of the outlet channel is connected; a second receiving port to which the upstream end of the downspout is connected; a straight pipe portion connecting the first socket and the second socket; Equipped with an axis of the first socket, an axis of the straight pipe portion, and an axis of the second socket are located on the same plane; The flow path cross-sectional area of the straight pipe portion is smaller than the flow path cross-sectional area of the inlet pipe and the flow path cross-sectional area of the downpipe. Rain gutter system.
2. The gutter system of claim 1 , wherein a siphoning phenomenon occurs within the downspout.
3. The gutter system according to claim 1 or 2, wherein the first socket and the second socket are not connected to each other.