Drainage piping system equipped with a piping manhole component and a drainage piping system with a piping manhole component.

Abstract

To provide a basin member for piping and a drain piping system, capable of obtaining excellent drainage performance at a vertical pipe by improving inflow performance of rain water into the vertical pipe or drainage performance.SOLUTION: A basin member for piping connected to an upper part of a vertical pipe has: a pipe body part arranged with a central axis oriented in a vertical direction; a horizontal pipe connection part formed at a lateral surface of the pipe body part and connected to the horizontal pipe; and a vertical pipe connection part formed at a lower part of the pipe body part and with the vertical pipe connected, wherein a bottom plate for storing members is provided inside of the pipe body part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pipe measuring member for pipes and a drainage pipe system provided with the pipe measuring member for pipes.

Background Art

[0002] In recent years, with the increasing frequency of heavy rainstorms, in order to efficiently drain rainwater from buildings, rainwater pipes tend to be enlarged. For example, in the drainage pipe system on the rooftop floor of a building shown in FIG. 21, a frame-shaped hood drain 102 is installed along a portion where a waist wall 101 is erected at a corner portion of the rooftop floor 100 of the building. A horizontal pipe 103 connected to this roof drain 102 is installed so as to horizontally penetrate the waist wall 101, and a vertical pipe 106 for drainage is connected to the outer end of the horizontal pipe 103 via an elbow pipe 105 (see, for example, Non-Patent Document 1).

[0003] In a drainage pipe system on the rooftop floor of a building, as shown in FIG. 22, a drainage pipe system is known in which a cheese joint 107 is provided at the connection portion between the horizontal pipe 103 and the vertical pipe 106 instead of the elbow pipe 105. A detachable cover plate 108 is provided on the ceiling portion of the cheese joint 107. Alternatively, as shown in FIG. 23, a drainage pipe system is known in which a drainage mass 109 is provided at the connection portion between the horizontal pipe 103 and the vertical pipe 106 instead of the elbow pipe 105. A detachable cover plate 110 is provided on the ceiling portion of the drainage mass 109.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

[0005] In the drainage piping system shown in Figure 21, rainwater from the rooftop is introduced into the horizontal pipe 103 via the roof drain 102 and then drained by flowing into the vertical pipe 106 via the elbow pipe 105. In typical drainage piping systems, the horizontal pipe 103 and vertical pipe 106 are designed to have the same diameter. However, in order to improve drainage capacity, especially considering measures against recent torrential downpours, there is a trend to increase the diameter of both the horizontal pipe 103 and the vertical pipe 106.

[0006] However, increasing the diameter of vertical pipes to mitigate heavy rainfall would increase the weight of the piping in multi-story buildings, necessitating stronger support structures to withstand the weight of the pipes or wind forces. Furthermore, various other impacts could arise, such as an increase in the number of pipe support points using support brackets, the need for stronger support brackets, and in some cases, the need to re-examine the structural strength of the building itself. In addition, securing storage space for the large-diameter vertical pipes, the need for larger transport machinery, and the increased labor costs could have various impacts on the building's design and construction. Furthermore, in the aforementioned drainage piping system, if pipe fittings connecting horizontal and vertical pipes are designed individually to cope with heavy rainfall, specialized components are required, which leads to increased equipment costs.

[0007] This invention has been made in view of the circumstances described above, and aims to provide a low-cost pipe manhole member that can improve the inflow and drainage of rainwater into vertical pipes. Furthermore, this invention aims to provide a pipe manhole member that does not increase the diameter of the vertical pipe even when the diameter of the horizontal pipe is increased. Moreover, this invention aims to provide a drainage piping system equipped with a pipe manhole member. [Means for solving the problem]

[0008] To solve the aforementioned problems, the present invention proposes the following embodiments. "1" The piping box member according to this embodiment is a piping box member connected to the upper part of a vertical pipe, and has a pipe body portion arranged with its central axis oriented vertically, a horizontal pipe connection portion formed on the side of the pipe body portion and connected to a horizontal pipe, and a vertical pipe connection portion formed at the lower part of the pipe body portion to which the vertical pipe is connected, and a bottom plate for storing members is provided inside the pipe body portion. Furthermore, the inner diameter of the vertical pipe is smaller than the inner diameter of the horizontal pipe connection, and the siphon activation member can be attached to the bottom plate of the pipe body. It has a configuration.

[0009] Vertical and horizontal pipes can be connected via a pipe box component. By providing a bottom plate for storing components within the box component, various components can be installed using the bottom plate. If the box component has horizontal and vertical pipe connection parts on the pipe body, the structure is simple and existing box components can be widely applied, contributing to the reduction of equipment costs. If the component installed on the bottom plate is a siphon activating component, the occurrence of the siphon phenomenon can be promoted, contributing to an improvement in the drainage capacity of the vertical pipe.

[0011] Even if the diameter of the horizontal pipes is increased to cope with torrential downpours, the inner diameter of the vertical pipe connection is smaller than that of the horizontal pipe connection, allowing for the connection of vertical pipes with even smaller inner diameters. Even if the diameter of the horizontal pipes increases and the amount of rainwater flowing from the horizontal pipes into the vertical pipes increases, gravity acts on the rainwater flowing through the vertical pipes, causing it to be discharged faster than the rainwater flowing through the horizontal pipes, so there are no problems with drainage capacity. By increasing the diameter of the horizontal pipes to mitigate torrential downpours, the vertical pipes can be made smaller. This eliminates the need to increase the strength of the support fittings for the vertical pipes, and also reduces the number of support fittings required. Furthermore, reducing the diameter of the vertical pipes reduces the load on the building structure. In addition, the elimination of the need for large-diameter vertical pipes reduces the storage space required for them, contributes to the miniaturization of transport heavy machinery, and provides a structure that does not burden the design and construction of the building.

[0013] If a siphon activation component is attached to the bottom plate, the siphon phenomenon is utilized to improve the drainage capacity of the vertical pipe. Therefore, even if a large amount of wastewater flows into the main pipe from the horizontal pipe, it can be reliably drained through the vertical pipe. "2" In the piping box member described in "1" relating to this embodiment, the horizontal pipe connection portion is tubular in shape protruding from the side of the pipe body portion, and a configuration can be adopted in which the inner diameter of the vertical pipe is 1 / 2 to 1 / 1 of the inner diameter of the horizontal pipe. "3" In the piping box member described in "1" or "2" relating to this embodiment, the siphon activating member has a connecting cylinder portion with an external thread at the bottom, and the upper end of the vertical pipe has a cylindrical connecting member that is connected to the vertical pipe and has an internal thread portion that screws into the external thread of the connecting cylinder portion, and the connecting cylinder portion of the siphon activating member installed on the bottom plate is inserted through a through hole formed in the bottom plate, and the siphon activating member can be attached to the bottom plate by screwing the external thread and the internal thread together, sandwiching the bottom plate between the siphon activating member and the connecting member. "4" In the piping box member described in "3" relating to this embodiment, the vertical pipe connection portion can be formed on the lower peripheral edge of the bottom plate and is shorter than the connecting member, and is cylindrical in shape located around the connecting member when the siphon activating member is attached to the bottom plate by sandwiching the bottom plate between the siphon activating member and the connecting member.

[0014] " 5 "Regarding this form Listed in one of "1" through "4" In a piping box member, an opening can be formed in the upper part of the pipe body, and a lid member that allows the opening to be opened and closed can be detachably attached. "6" In the piping box member described in any of "1" to "4" relating to this embodiment, a configuration can be adopted in which the siphon activation member is attached to the bottom plate of the pipe body.

[0015] If the opening of the pipe body is made openable and closable with a lid member, then if foreign matter accumulates inside the pipe body or becomes clogged with foreign matter, the lid member can be removed to clean the inside of the piping manhole member, thus providing a piping manhole member with excellent maintainability.

[0016] " 7 The drainage piping system relating to this form is "1" to " 6 The invention is characterized by comprising a piping manhole member described in any of the above, a horizontal pipe connected to the horizontal pipe connection portion of the piping manhole member, and a vertical pipe connected to the vertical pipe connection portion of the piping manhole member.

[0017] " 8 The drainage piping system according to this embodiment includes a roof drain installed on the rooftop floor of a building, and the roof drain and Connected Ta A drainage piping system comprising a horizontal pipe, a piping manhole member connected to the outer end of the horizontal pipe, and a vertical pipe connected to the lower part of the piping manhole member, wherein the piping manhole member is "1" to " 6 It is characterized by being a piping box member as described in any of the following:

[0018] This form of drainage piping system provides a configuration in which vertical and horizontal pipes are connected via a piping manhole member. By providing a bottom plate for storing components within the piping manhole member, various components can be installed using the bottom plate. If the piping manhole member has horizontal and vertical pipe connection parts in the pipe body, the configuration is simple and existing manhole members can be widely applied, thus contributing to the reduction of equipment costs. If the member provided on the bottom plate is a siphon activation member, the occurrence of the siphon phenomenon can be promoted, contributing to an improvement in the drainage capacity of the vertical pipe.

[0019] Assuming that the horizontal pipe is enlarged in diameter for countermeasures against guerrilla heavy rain or the like, if the inner diameter of the vertical pipe connection part is made smaller than the inner diameter of the horizontal pipe connection part, a small-diameter vertical pipe can be connected. Even if the horizontal pipe becomes large-diameter and the amount of rainwater flowing from the horizontal pipe into the vertical pipe increases, gravity acts on the rainwater flowing through the vertical pipe, and the rainwater is discharged faster than the rainwater flowing through the horizontal pipe, so there is no problem with the drainage capacity as a drainage pipe system. Assuming that the horizontal pipe is enlarged in diameter, by making it possible to reduce the diameter of the vertical pipe, it is possible to provide a drainage pipe system in which it is not necessary to improve the strength of the fitting that supports the vertical pipe more than necessary, and the necessary number of support fittings can also be reduced.

Effect of the Invention

[0020] With the pipe fitting member of the present invention, the vertical pipe and the horizontal pipe can be connected via the pipe fitting member. By providing a bottom plate for member storage inside the pipe fitting member, it becomes possible to use the bottom plate to install various members. If the pipe fitting member has a horizontal pipe connection part and a vertical pipe connection part in the pipe body part, the structure is simple and the fitting member as an existing product can be widely applied, contributing to the suppression of equipment costs. If the member provided on the bottom plate is a siphon activation member, the occurrence of the siphon phenomenon can be promoted, contributing to an improvement in the drainage capacity of the vertical pipe.

Brief Description of the Drawings

[0021] [Figure 1] FIG. 23 is a partial cross-sectional view showing an example of a drainage pipe system applied to a connection part between a horizontal pipe installed on the building rooftop floor and a vertical pipe arranged along the outer wall using the pipe fitting member according to the first embodiment of the present invention. [Figure 2] FIG. 26 is a cross-sectional view of the pipe fitting member according to the first embodiment. [Figure 3] FIG. 29 is a cross-sectional view of the pipe fitting member according to the second embodiment of the present invention. [Figure 4] FIG. 32 is a cross-sectional view of the pipe fitting member according to the third embodiment of the present invention. [Figure 5] This is a cross-sectional view of a piping box member according to a fourth embodiment of the present invention. [Figure 6] This is a cross-sectional view of a piping box member according to a fifth embodiment of the present invention. [Figure 7] This is a plan view of the piping box member of the fifth embodiment. [Figure 8] This is a plan view showing a modified example in which the peripheral wall of a piping box component is rounded. [Figure 9] This is a plan view showing a modified example of a pipe box component in which the peripheral wall is partially square and partially rounded. [Figure 10] This is a cross-sectional view of a piping box member according to the sixth embodiment of the present invention. [Figure 11] This is a cross-sectional view of a piping box member according to the seventh embodiment of the present invention. [Figure 12] This is a partial cross-sectional view showing the connection structure between a piping box member and horizontal and vertical pipes according to the eighth embodiment of the present invention. [Figure 13] Figure 12 is a side view of the connection structure. [Figure 14] This is a cross-sectional view of a piping box member according to the ninth embodiment of the present invention. [Figure 15] This is a cross-sectional view of a piping box member according to the 10th embodiment of the present invention. [Figure 16] This is a cross-sectional view of a piping box member according to the 11th embodiment of the present invention. [Figure 17] This is a perspective view showing an overview of the verification test conducted to examine the effects of the length of the horizontal pipe. [Figure 18] This is an explanatory diagram showing the configuration of a verification test apparatus equipped with a horizontal tube 0.3m in length. [Figure 19] This is an explanatory diagram showing the configuration of a verification test apparatus equipped with a horizontal pipe 1.0 m in length. [Figure 20] Figures 12 and 13 show graphs illustrating the test results obtained using the verification test apparatus. [Figure 21] This is a diagram showing a first conventional example of a drainage piping system. [Figure 22] This is a diagram showing a second conventional example related to a drainage piping system. [Figure 23] This is a diagram showing a third conventional example related to a drainage piping system. [Modes for carrying out the invention]

[0022] Hereinafter, with reference to Figures 1 to 5, an example of a drainage piping system equipped with a piping box member according to the first embodiment of the present invention will be described below. The drainage piping system equipped with a piping manhole member according to this embodiment can be applied, for example, to the drainage of buildings such as office buildings and condominiums. In the first embodiment shown in Figure 1, a piping manhole member 3 is provided on the outside of the connection between the building's rooftop floor 1 and a parapet wall 2 erected at the corner of the rooftop floor 1. A frame-shaped roof drain 5 is provided inside the joint between the rooftop floor 1 and the parapet wall 2, and the piping manhole member 3 is connected to the outer end of a horizontal pipe 6 that is connected to the roof drain 5 and penetrates the parapet wall 2 horizontally. A vertical pipe 7 is connected to the lower part of the piping manhole member 3. In the first embodiment, the drainage piping system S is configured with the roof drain 5, the horizontal pipe 6, the piping manhole member 3, and the vertical pipe 7. The vertical pipe 7 extends downward along the outer wall 8 of the building and is connected to drainage facilities such as a water collection basin (not shown) or other drainage pipes located on the ground near the building.

[0023] The roof drain 5 has an L-shaped frame 12 consisting of a bottom plate 10 and side plates 11, and a cylindrical member 13 for connecting pipes is integrated into the frame 12. The cylindrical member 13 extends outward from the side plate 11 so as to extend outward from a through hole 11a formed on the bottom side of the side plate 11. The roof drain 5 is installed in the corner of the rooftop floor 1 by placing the bottom plate 10 on the corner of the rooftop floor 1, attaching the side plates 11 to the bottom of the parapet wall 2, and inserting the cylindrical member 13 into the through hole 2a formed in the bottom of the parapet wall 2. An L-shaped strainer 17, equipped with multiple water passage holes, is detachably attached to the inside of the frame 12 using bolts 18 and nuts 19, and the frame 12 and the strainer 17 constitute the roof drain 5.

[0024] By attaching the strainer 17 to the frame 12 with bolts 18 and nuts 19, the bottom plate 10 of the roof drain 5 and the bottom of the strainer 17 sandwich and hold down the edge of the waterproof sheet 15 on the roof floor 1 side. Similarly, by the bolt fastening described above, the side plate 11 and the top of the strainer 17 sandwich and hold down the edge of the waterproof sheet 16 on the parapet wall 2 side. The roof drain 5 used in this embodiment is just one example, and the structure of the roof drain used in the present invention may be a general frame type or box type, or any other general structure of roof drain as appropriate. For example, the roof drain 5 provided on the horizontal part of the rooftop floor 1, rather than the corner part, may be connected to the horizontal pipe 6. In this case, since the cylindrical member 13 provided on the bottom plate 10 of the roof drain 5 is open in the vertical direction, the roof drain 5 and the horizontal pipe 6 are connected via an elbow.

[0025] A horizontal through-hole 2a is formed in the parapet wall 2 at a position where it is in contact with the rooftop floor 1. A horizontal drainage pipe 6 is positioned through this through-hole 2a such that one end protrudes slightly outside the through-hole 2a, and the other end is connected to the cylindrical member 13 of the roof drain 5. The piping box member 3 connected to the horizontal pipe 6 has a pipe body 22, a horizontal pipe connection part 23, and a vertical pipe connection part 24. The pipe body 22 is positioned close to the low wall 2 with its central axis oriented vertically. The pipe body 22 is cylindrical in shape, and a cylindrical horizontal pipe connection part 23 protrudes horizontally from a part of its side wall 22a. When installing the pipe body 22, it is acceptable to install it with its central axis slightly tilted from the vertical.

[0026] The horizontal pipe connection section 23 is composed of a branch pipe protruding from the side of the main pipe section 22 and has an opening sized to allow the outer end of the horizontal pipe 6 to be inserted. The outer end of the horizontal pipe 6 is inserted into this opening, and the horizontal pipe 6 is connected to the horizontal pipe connection section 23 by joining means such as adhesive. As described above, the inner diameter of the horizontal pipe connection section 23 is such that the horizontal pipe 6 can be inserted, but the inner diameter of the main pipe section 22 is also formed to be approximately the same as the inner diameter of the horizontal pipe connection section 23. The horizontal pipe connection section 23 is formed on the bottom side of the main pipe section 22. In the configuration shown in Figures 1 and 2, the height dimension of the main pipe section 22 is formed to be slightly larger than the outer diameter of the horizontal pipe connection section 23. Therefore, the uppermost position of the horizontal pipe connection section 23 is located below the upper end of the main pipe section 22, and the lowermost position of the horizontal pipe connection section 23 is located near the bottom of the main pipe section 22.

[0027] Figure 2 shows an enlarged internal cross-sectional structure of the piping box member 3. As shown in Figure 2, the piping manhole member 3 is installed with the central axis of the pipe body 22 oriented vertically, but a bottom plate 22A is formed slightly higher than the lower end of the pipe body 22. In the configuration shown in Figure 2, the lowest end of the horizontal pipe connection part 23 and the bottom plate 22A are formed at approximately the same height. A through hole 22d for vertical pipe connection is formed in the center of the bottom plate 22A. In the main body of the pipe 22, a cylindrical vertical pipe connection portion 24 is formed in the portion below the bottom plate 22A.

[0028] A siphon activation member 25 is provided inside the piping manhole member 3, and the bottom side of this siphon activation member 25 is connected to a ring-shaped connecting member 26 located on the underside of the bottom plate. The connecting member 26 has a flange portion 26B formed on the upper side of the connecting cylinder portion 26A, and the outer diameter of the flange portion 26B is formed to be slightly smaller than the outer diameter of the bottom plate 22A of the pipe body portion 22. In addition, an internal thread portion (not shown) is formed on the inner circumferential surface of the connecting cylinder portion 26A.

[0029] The siphon activating member 25 includes, for example, a lid member 25A, a plurality of vertical ribs 25B extending downward from the lower surface of the lid member 25A, a flange portion 25C formed below the vertical ribs 25B, and a connecting cylinder portion 25D extending below the flange portion 25C. A plurality of gripping ribs 25E are formed on the upper surface of the lid member 25A. The lid member 25A may also have through holes. The opening between the lid member 25A and the flange portion 25C is designated as the drainage inlet 25F. A guide (not shown) is formed on the center side of the bottom surface of the lid member 25A to direct the drainage flowing in from the inlet 25F downwards. An external thread (not shown) is formed on the outer circumferential surface of the connecting cylinder portion 25D, which can be screwed into the internal thread of the aforementioned connecting member 26.

[0030] In the siphon activating member 25, the outer diameter of the connecting cylinder portion 25D is formed to be slightly smaller than the inner diameter of the through hole 22d formed in the bottom plate 22A of the pipe body portion 22. In the main body of the pipe 22, it is connected to the lower surface of the bottom plate 22a. component 26 is placed, this connection component The siphon activating member 25 is attached to the bottom plate 22A of the pipe body 22 by screwing the external thread portion of the connecting cylinder portion 25D of the aforementioned siphon activating member 25 into the internal thread portion of 26. Component 26 The siphon activating member 25 is fixed to the bottom plate 22A by sandwiching the bottom plate 22A. Note that in Figure 2, the siphon activating member 25 is connected component The image shows the 26 screws released and both separated from the bottom plate 22A, but in these mounting states, the siphon activation member 25 is connected. component 26 is integrated by a screw connection.

[0031] Connection tube section 2 5 A flange portion 25C is formed on the outer circumference of the upper end opening of D, and a connecting cylinder portion 2 5 The upper opening of D is designated as the drain outlet. The size, height, and shape of each part of the siphon activating member 25 are adjusted so that the area of ​​the inlet opening 25F is larger than the opening area at the upper end of the connecting cylinder portion 25D (the opening area of ​​the drop-off portion). In this embodiment, the area of ​​the inlet opening 25F can be determined by the product of the circumference of the circular lid member 25A and the height H from the flange portion 25C to the lid member 25A.

[0032] The preferred inner diameter of the connecting cylinder portion 25D for providing the lid member 25A is preferably 50 mm or more and 170 mm or less, and more preferably 70 mm or more and 170 mm or less. That is, by setting the outer diameter of the opening of the drop-off portion of the connecting cylinder portion to the lower limit of 50 mm or more, the large flow rate of wastewater generated by the siphon activating member 25 can be drained smoothly. And by setting the upper limit to 170 mm or less, the size required when housing it in the piping manhole member 3 can be reduced, preventing the piping manhole member 3 from becoming larger. The upper end of the vertical pipe 7 is inserted into the connecting cylindrical portion 26A of the connecting member 26 and fixed in place by a joining means such as adhesive.

[0033] In the configuration of the first embodiment shown in Figures 1 and 2, the inner diameters of the connecting pipe sections 25D and 26A are set to be approximately half the inner diameter of the main pipe section 22. Furthermore, since the inner diameters of the connecting pipe sections 25D and 26A are formed to be approximately half the inner diameter of the horizontal pipe 6, the inner diameter of the vertical pipe 7 is formed to be approximately half the inner diameter of the horizontal pipe 6. In this embodiment, the inner diameter of the vertical pipe 7 is formed to be about half the inner diameter of the horizontal pipe 6, but the inner diameter of the vertical pipe 7 may be formed to be about half to one-half the inner diameter of the horizontal pipe 6. That is, the inner diameters of the connecting pipe sections 25D and 26A may be in the range of about half to one-half the inner diameter of the pipe body section 22. In any case, in this embodiment, the inner diameters of the connecting pipe sections 25D and 26A (≒ inner diameter of the vertical pipe 7) are equal to or smaller than the inner diameter of the pipe body section 22 (≒ inner diameter of the horizontal pipe 6).

[0034] The piping manhole member 3 is formed by injection molding resins such as olefin resins like PE (polyethylene), PP (polypropylene), or PB (polybutene), rigid polyvinyl chloride resin, ABS (acrylonitrile-butadiene-styrene copolymer resin), or AES (acrylonitrile-ethylene-styrene copolymer resin). The siphon activating member 25 is, for example, an injection-molded product made from a synthetic resin such as rigid polyvinyl chloride resin, polycarbonate, ABS, or AES. However, the constituent material of the siphon activating member 25 is not limited to synthetic resin, and may be formed from metals such as cast iron, stainless steel, or aluminum.

[0035] In the piping manhole member 3, an opening 22b is formed at the upper end of the pipe body 22, and this opening 22b is closed by a detachably fitted lid member 28. The lid member 28 is a cap-shaped member comprising a top plate 28A and a connecting tube 28B. It is desirable that the lid member 28 has an air vent hole. The opening 22b may also be provided on the side of the main body of the pipe, in which case the lid member 28 is detachably fitted into the side opening of the main body of the pipe 22. Connection is made through the opening provided on the side of the main body of the pipe. component This makes it easier to screw the external thread portion of the connecting cylinder portion 25D of the siphon activating member 25 onto the internal thread portion 26.

[0036] The drainage performance of the structure shown in Figure 1 will be explained below. Rainwater flows along the waterproof sheet 15 and, upon reaching the roof drain 15, passes through the perforations 11a and flows into the horizontal pipe 6, then flows into the main pipe section 22 via the horizontal pipe connection section 23 of the piping manhole member 3. The rainwater that has flowed into the main pipe section 22 changes its direction of flow downward, passes through the siphon activating member 25, and is discharged along the vertical pipe 7 to the drainage facility side, such as a drain manhole.

[0037] On the other hand, in recent years, due to measures against torrential downpours, there has been a tendency to increase the diameter of the horizontal pipe 6 in order to improve drainage capacity. In the structure of this embodiment, the inner diameter of the horizontal pipe 6 is equal to the inner diameter of the vertical pipe 7, or the inner diameter of the vertical pipe 7 is smaller. When rainwater flows into the vertical pipe 7, gravity acts on the rainwater flowing through the vertical pipe 7, so the rainwater flowing through the vertical pipe 7 is discharged more smoothly than the rainwater flowing through the horizontal pipe 6. Therefore, even if a large amount of rainwater flows into the vertical pipe 7 through the horizontal pipe 6, the flow flux of the rainwater flowing through the vertical pipe 7 will be faster, and sufficient drainage can be obtained by the vertical pipe 7 even if the vertical pipe 7 has a small inner diameter. As an example, if the nominal diameter of the horizontal pipe 6 is 150 mm, the nominal diameter of the vertical pipe 7 can be 75 mm. The nominal diameter of the vertical pipe 7 may also be 100 mm, etc.

[0038] In this embodiment, when a vertical pipe 7 with a smaller diameter than the horizontal pipe 6 is provided, the weight of the vertical pipe 7 can be reduced compared to the conventional structure in which a vertical pipe with the same outer diameter as the horizontal pipe 6 was provided. Since the weight of the vertical pipe 7 can be reduced, the number of fittings supporting the vertical pipe 7 can be reduced, and the strength of the supporting fittings can be reduced, thereby reducing excessive load on the building structure. In addition, it is possible to reduce the storage space required when installing the vertical pipe 7 and to suppress the need for larger transport equipment, which has the advantage of creating more flexibility in the design and construction of the building.

[0039] Next, the operation of the siphon activating member 25 will be explained. When viewed from above, the siphon activating member 25 blocks the opening of the outlet (the upper end opening of the connecting cylinder portion 25D) with drainage, and even when a large amount of rainwater flows in through the inlet opening during heavy rain, it seals the downpipe 7 with water without drawing in air, keeping it full of water. As a result, a siphon effect can be generated on the downstream side. In this way, the siphon activating member 25 enables the downpipe 7 to exhibit high drainage functionality. Therefore, even if a large amount of rainwater flows from the horizontal pipe 6 into the piping manhole member 3, good drainage capacity can be obtained.

[0040] By the way, in the explanation so far, we have described an example in which this embodiment is applied to a roof drain 5 installed on the rooftop floor 1 of a building. However, since roof drains 5 can also be installed on balcony floors, veranda floors, terrace floors, etc., the structure of the earlier embodiment of this application can be applied to roof drains installed on balcony floors, veranda floors, terrace floors, etc.

[0041] Figure 3 shows a piping manhole member according to a second embodiment of the present invention. The configuration of the piping manhole member 30 of the second embodiment, which has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, is the same as that of the piping manhole member 3 of the first embodiment. The difference between the piping manhole member 30 of the second embodiment and the piping manhole member 30 is that the inner diameter of the pipe body portion 22 is larger than that of the pipe body portion 22 of the piping manhole member 3 of the first embodiment. For example, in the piping manhole member 3 of the first embodiment, the size of the horizontal pipe 6 was a nominal diameter of 150A and the size of the vertical pipe 7 was a nominal diameter of 75A, but in the piping manhole member 30 of the second embodiment, the size of the horizontal pipe 6 is a nominal diameter of 150A, and the size of the pipe body 22 and the vertical pipe 7 is a nominal diameter of 100A. In the piping manhole member 30 of the second embodiment, because the nominal diameter of the pipe body 22 is larger, the upper side of the side wall 22a of the pipe body 22 is formed to be thicker than in the first embodiment. In the second embodiment of the piping manhole member 30, the other configurations are the same as those of the piping manhole member 3 in the first embodiment.

[0042] As in the second embodiment of the piping manhole member 30, the size of the vertical pipe 7 does not have to be half the size of the horizontal pipe 6. The same effects and advantages as those of the first piping manhole member 3 can be obtained with the piping manhole member 30 of the second embodiment.

[0043] Figure 4 shows a piping manhole member of a third embodiment according to the present invention. The piping manhole member 35 of the third embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the first embodiment. In the first embodiment of the piping manhole member 3, the size of the horizontal pipe 6 was a nominal diameter of 150A and the size of the vertical pipe 7 was a nominal diameter of 75A. However, in the third embodiment of the piping manhole member 30, the size of the horizontal pipe 6 is a nominal diameter of 100A, and the size of the pipe body 22 and the vertical pipe 7 is a nominal diameter of 75A. In the third embodiment of the piping manhole member 30, the other configurations are the same as those of the piping manhole member 3 in the first embodiment. In the third embodiment of the piping manhole member 35, the same effects and advantages as those of the piping manhole member 3 described above can be obtained.

[0044] Figure 5 shows a piping manhole member of the fourth embodiment according to the present invention. The piping manhole member 40 of the fourth embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the first embodiment. In the first embodiment of the piping manhole member 3, the size of the horizontal pipe 6 was a nominal diameter of 150A and the size of the vertical pipe 7 was a nominal diameter of 75A. However, in the fourth embodiment of the piping manhole member 40, the size of the horizontal pipe 6 is a nominal diameter of 100A, and the size of the pipe body 22 and the vertical pipe 7 are both a nominal diameter of 100A. In the fourth embodiment, the piping manhole member 40 has the same configuration as the piping manhole member 3 of the first embodiment. As in the third embodiment, the nominal diameter sizes of the horizontal pipe 6 and the vertical pipe 7 may be the same. In the third embodiment of the piping manhole member 40, the same effects and advantages as those of the piping manhole member 3 described above can be obtained.

[0045] Figures 6 and 7 show a piping manhole member of the fifth embodiment according to the present invention. The configuration of the piping manhole member 45 of the fifth embodiment, which has a pipe body portion 46, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, is equivalent to that of the piping manhole member 3 of the first embodiment. The fifth embodiment of the piping manhole member 45 is characterized in that the pipe body portion 46 has a quadrilateral shape in plan view. There are no particular restrictions on the plan view shape of the piping manhole member; as shown in Figure 8, the pipe body portion 47 may be elliptical, or as shown in Figure 9, half of it may be circular in plan view and the other half quadrilateral in plan view. The rectangular pipe body 46 shown in Figures 6 and 7 can be installed closer to the adjacent wall, thus providing a stable support structure when installed on a wall.

[0046] Figure 10 shows a piping manhole member according to the sixth embodiment of the present invention. The piping manhole member 50 of the sixth embodiment has a pipe body portion 22, a horizontal pipe connection portion 51, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the first embodiment. The pipe box member 50 of the sixth embodiment differs in that the horizontal pipe connection portion 51 does not have a branch pipe portion, and has a connection hole 52 formed on the side surface of the pipe body portion 22 and a thickened portion 53 formed around its outer circumference. The horizontal pipe connection part 51 may be constructed from a connection hole 52 and a thick-walled portion 53, as shown in the horizontal pipe connection part 51. In the piping manhole member 50 of the sixth embodiment, the same effects and advantages as those of the piping manhole member 3 described above can be obtained.

[0047] Figure 11 shows a piping manhole member of the seventh embodiment according to the present invention. The piping manhole member 55 of the seventh embodiment has a pipe body portion 22, a horizontal pipe connection portion 56, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the sixth embodiment. In the seventh embodiment of the piping manhole member 50, the horizontal pipe connection portion 56 does not have a branch pipe portion, and differs in that it consists of a connection hole 57 formed on the side surface of the central part in the height direction of the pipe body portion 22 and a thickened portion 58 formed on its outer circumference. An edge portion 57 is formed on the outer circumference of the connection hole. The horizontal pipe connection portion 56 may be formed from the connection hole 7 and the thick-walled portion 58, as in the horizontal pipe connection portion 56, and its formation position may be in the center of the pipe body portion 22 in the height direction. In the structure shown in Figure 11, drainage from the horizontal pipe 6 flows into the main pipe section 22 from a position higher than the bottom plate 22A or the siphon member 25. In the seventh embodiment, the same effects and advantages as those of the previous piping manhole member 50 can be obtained with the piping manhole member 55.

[0048] Figure 12 shows a drainage piping system S2 equipped with a piping manhole member according to the eighth embodiment of the present invention. The piping manhole member 60 applied to the eighth embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the first embodiment. Furthermore, the configuration in which a horizontal pipe 6 is connected to the horizontal pipe connection portion 23 and a vertical pipe 7 is connected to the vertical pipe connection portion 24 is also equivalent. The eighth embodiment of the piping manhole member 60 is characterized by the fact that the vertical pipe 7 is connected to the vertical pipe connection part 24 via an S-shaped elbow pipe 61. By positioning the vertical pipe 7 via the elbow pipe 61, the vertical pipe 7 can be positioned closer to the wall surface of the low wall 2 compared to the configuration shown in Figure 1. By positioning the vertical pipe 7 close to the wall, it can be positioned in close proximity to the wall surface of the low wall 2 and the exterior wall surface of the floor below. This allows for a shorter length of the brackets used to fix the vertical pipe 7 to the low wall 2 and the exterior wall, thereby stabilizing the mounting structure of the vertical pipe 7 using the brackets.

[0049] Figure 14 shows a piping manhole member according to the ninth embodiment of the present invention. The piping manhole member 65 of the ninth embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 3 of the first embodiment. The piping manhole member 65 of the ninth embodiment is characterized in that no through-holes are formed in the bottom plate 22A of the pipe body portion 22. The piping manhole member 65 of the ninth embodiment shows, as an example, the piping manhole member at the factory shipment stage before being attached to the upper end of the vertical pipe 7. After manufacturing the piping manhole component 65 at the factory, it is transported to the installation site, where workers can form through-holes of the required inner diameter in the bottom plate 22A to match the size of the vertical pipe at the site. By forming through-holes of the required inner diameter in the bottom plate 22A, the vertical pipe connection section 24 is completed. In the 9th embodiment, the same effects and advantages as those of the pipe box member 3 described above can be obtained with the pipe box member 65.

[0050] Figure 15 shows a piping manhole member of the tenth embodiment according to the present invention. The piping manhole member 70 of the tenth embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 30 of the second embodiment. The piping manhole member 70 of the 10th embodiment is characterized in that no through-holes are formed in the bottom plate 22A of the pipe body portion 22. The piping manhole member 70 of the 10th embodiment shows the piping manhole member before it is attached to the upper end of the vertical pipe 7, for example, at the factory shipment stage. After manufacturing the piping manhole component 70 at the factory, it is transported to the installation site, where workers can form through-holes of the required inner diameter in the bottom plate 22A to match the size of the vertical pipe at the site. By forming through-holes of the required inner diameter in the bottom plate 22A, the vertical pipe connection section 24 is completed. The piping manhole member 70 of the 10th embodiment can also obtain the same effects and advantages as the piping manhole member 30 described above.

[0051] Figure 16 shows a piping manhole member of the 11th embodiment according to the present invention. The piping manhole member 75 of the 11th embodiment has a pipe body portion 22, a horizontal pipe connection portion 23, and a vertical pipe connection portion 24, which is equivalent to the piping manhole member 30 of the second embodiment. The 11th embodiment of the piping manhole member 75 is characterized in that a through-hole 22e for a nominal diameter of 75A is formed in the bottom plate 22A of the pipe body 22. Since the pipe body 22 is sized for a nominal diameter of 100A, the size of the bottom plate 22A can also be used to form a through-hole of the size of a nominal diameter of 100A, but a through-hole 22e for a nominal diameter of 75A is formed in the bottom plate 22A. As in the structure of the 11th embodiment, a through-hole 22e corresponding to a nominal diameter of 75A may be formed in the bottom plate 22A, which is capable of forming a through-hole corresponding to a nominal diameter of 100A. In this piping manhole member 75, a piping manhole member corresponding to a nominal diameter of 100A is applied to a nominal diameter of 75A, making it possible to use a piping manhole member of a specific size for two different sizes of vertical pipes. In the 11th embodiment, the same effects and advantages as those of the piping manhole member 30 can be obtained with the piping manhole member 75.

[0052] Incidentally, in the piping manhole members described so far, a removable lid member 28 is provided to allow access to the inside of the pipe body 22 and other parts. This is to allow the inside of the pipe body 22 to be cleaned by removing the lid member 28. It is also to facilitate the installation of the siphon activation member 25. However, the lid member 28 is not an essential component and can be omitted. If the horizontal pipe connection section 23 is sufficiently large, or if the inside of the pipe body section 22 can be cleaned from the inside of the lower wall 2, the cover member 28 may be omitted, and the upper part of the pipe body section 22 may be closed.

[0053] "Verification test of drainage capacity" The following three types of verification tests were conducted to assess the effectiveness of the piping manhole component shown in Figure 1 when actually performing drainage. In the verification test, a three-story building 80 shown in Figure 17 was used, and a gutter simulation 85 measuring 30 cm wide, 35 cm deep, and 8 m long was installed on the third floor 83. A bent horizontal pipe (horizontal pipe: nominal diameter 150A) 86, shown in Figure 18, was connected to one end wall 85a of the gutter simulation 85, and the horizontal pipe connection part 23 of the piping joint 3, configured as shown in Figure 1, was connected to the tip of this horizontal pipe 86. A vertical pipe (nominal diameter 75A) 88, approximately 6 m high, reaching from the third floor 83 of the building 80 to the first floor 81, was connected to the vertical pipe connection part 24 of the piping manhole member 3, and the vertical pipe 88 was connected to a rainwater manhole 89 installed on the first floor 81 via a connecting pipe 90. This rainwater manhole 89 was connected to a drainage pit 92 via a horizontal pipe 91 installed on the first floor 51. Furthermore, a roof drain 5 with the structure shown in Figure 1 was placed inside the end wall 85a to which the horizontal pipe 86 was connected in the gutter simulation 85.

[0054] The first verification test was conducted using the verification test apparatus described above to verify the drainage performance when a predetermined amount of water was flowed through the gutter simulator 85. The verification test was performed by flowing a predetermined amount of tap water (5 L / s, 10 L / s, 15 L / s, 20 L / s) through the gutter, passing the tap water through a 30 cm long horizontal pipe 86 to a piping manhole member 3, and discharging the tap water into the vertical pipe 88. The water level (indicated as the lower water level) was measured at a position 50 cm away from the end wall 85a of the gutter simulator 85. The results of the first verification test are shown in Figure 20.

[0055] In the second verification test, the horizontal pipe 86 installed on the end wall 85a of the gutter model 85 was removed from the verification test apparatus described earlier. Instead, an L-shaped horizontal pipe (horizontal pipe: nominal diameter 150A) 95 was connected to the side wall 85b of the gutter model 85, 45 cm away from the end wall 85a, as shown in Figure 19. The horizontal pipe connection part 23 of the piping manhole member 3, configured as shown in Figure 1, was connected to the tip of this horizontal pipe 95. The length of the horizontal pipe 95 along the longitudinal direction of the gutter model 85 was set to 1 m. In addition, a roof drain 5 with the structure shown in Figure 1 was placed inside the side wall 85b to which the horizontal pipe 95 was connected in the gutter model 85. The second verification test involved flowing a predetermined amount of tap water (5 L / s, 10 L / s, 15 L / s, 20 L / s) through the gutter, draining it through a 1 m long horizontal pipe 95 and a piping manhole member 3 into a vertical pipe 88, and measuring the water level (referred to as the lower water level) at a position 50 cm away from the end wall 85a of the gutter simulation 85. The results of the second verification test are shown in Figure 20.

[0056] The third verification test was conducted using the same verification apparatus as the first verification test, but with a 90° Y-pipe used as a joint instead of the piping manhole member 3, and a vertical pipe of nominal diameter 150A connected to a horizontal pipe of nominal diameter 150A, and the same verification test as the first verification test was performed. The results of the third verification test are shown in Figure 20.

[0057] In the graph shown in Figure 20, the horizontal axis shows the volume of water flowing through the gutter simulation (5 L / s, 10 L / s, 15 L / s, 20 L / s), and the vertical axis shows the water level below the surface (0 to 300 mm). As shown in the graph in Figure 20, in all verification tests, as the amount of water flowing into the gutter simulated body 85 increases, the water level at the bottom gradually rises. In the graph shown in Figure 20, a lower water level value indicates better drainage when comparing the same amount of water.

[0058] The results of the third verification test correspond to the conventional example. In contrast, the results of the first and second verification tests correspond to test examples in which the present invention is equipped with a siphon member. Comparing the results of the first verification test using the horizontal pipe 86 with the results of the second verification test using the horizontal pipe 95, good drainage performance was observed in both verification tests, although there was a slight difference in water level, regardless of whether the length of the horizontal pipe was 0.3m or 1.0m. From this, it was found that there is no problem in the occurrence of the siphon phenomenon whether the length of the horizontal pipe is 1.0m or 0.3m. In the third verification test, which corresponds to a conventional example, a vertical pipe with a nominal diameter of 150A was used, which is twice the diameter of the 75A vertical pipe used in the first and second verification tests. It was found that even when using a vertical pipe with a nominal diameter of 75A, which is half the diameter of the conventional structure, the present invention's structure exhibits superior drainage performance. This is thought to be the result of the siphon activation member 25 installed inside the pipe fitting utilizing the siphon phenomenon to facilitate drainage. [Explanation of symbols]

[0059] S... Drainage piping system, 1...roof floor, 2... Wainscoting, 3…Pipe fittings, 5...Roof drain, 6...Horizontal pipe, 7…Vertical pipe, 8... Exterior walls, 22...Pipe body part, 22a...opening, 23... Horizontal pipe connection section, 24... Vertical pipe connection, 25...Siphon activation component, 26...Reduced diameter part, 28... Lid component, 28b... slope, 28e…straightening plate, 30... rectifier plate, 35, 40, 50... Pipe fittings.

Claims

1. A piping box member connected to the upper part of a vertical pipe, It has a main pipe section arranged with its central axis oriented vertically, a horizontal pipe connection section formed on the side of the main pipe section and connected to a horizontal pipe, and a vertical pipe connection section formed at the lower part of the main pipe section and connected to the vertical pipe. The aforementioned horizontal pipe connection portion is a connection hole formed on the side surface of the pipe body portion. The aforementioned connection hole has a thickened portion formed on its outer circumference. The main body of the pipe is square in shape when viewed from above. A piping box member is provided with a bottom plate for storing components inside the main body of the pipe, the inner diameter of the vertical pipe is smaller than the inner diameter of the horizontal pipe connection, and a siphon activation member can be attached to the bottom plate of the main body of the pipe.

2. The piping box member according to Claim 1, wherein the inner diameter of the vertical pipe is 1 / 2 to 1 / 1 of the inner diameter of the horizontal pipe.

3. A piping box member according to claim 1 or 2, wherein the siphon activating member has a connecting cylinder portion with an external thread at its bottom, and a cylindrical connecting member has an internal thread portion that is connected to the vertical pipe and screws into the external thread at the top of the connecting cylinder portion, the connecting cylinder portion of the siphon activating member installed on the bottom plate passes through a through hole formed in the bottom plate, and the siphon activating member can be attached to the bottom plate by the screwing of the external thread and the internal thread, with the siphon activating member and the connecting member sandwiching the bottom plate.

4. The piping box member according to claim 3, wherein the vertical pipe connection portion is formed on the lower peripheral edge of the bottom plate and is shorter than the connecting member, and is cylindrical in shape and located around the connecting member when the siphon activating member is attached to the bottom plate by sandwiching the bottom plate between the siphon activating member and the connecting member.

5. A piping box member according to any one of claims 1 to 4, wherein an opening is formed in the upper part of the pipe body, and a lid member that allows the opening to be opened and closed is detachably attached.

6. A piping box member according to any one of claims 1 to 4, wherein the siphon activation member is attached to the bottom plate of the pipe body.

7. A drainage piping system comprising a piping manhole member as described in any one of claims 1 to 6, a horizontal pipe connected to a horizontal pipe connection portion of the piping manhole member, and a vertical pipe connected to a vertical pipe connection portion of the piping manhole member.

8. A drainage piping system comprising a roof drain installed on the rooftop floor of a building, a horizontal pipe connected to the roof drain, a piping box member connected to the outer end of the horizontal pipe, and a vertical pipe connected to the lower part of the piping box member, A drainage piping system in which the aforementioned piping manhole member is the piping manhole member described in any one of claims 1 to 6.

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