A siphon type roof rainwater drainage building design structure

By setting rectification and diversion parts on the siphon rainwater hopper, combined with elastic suspension parts and HDPE pipes, the siphon roof rainwater drainage system is optimized, solving the problems of start-up speed and noise suppression, and achieving efficient and stable drainage effect and low noise environment.

CN224338533UActive Publication Date: 2026-06-09FOSHAN SHUNDE DISTRICT SHUNJIAN CONSTRUCTION DRAWINGS REVIEW CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN SHUNDE DISTRICT SHUNJIAN CONSTRUCTION DRAWINGS REVIEW CO LTD
Filing Date
2025-07-15
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional siphonic roof rainwater drainage systems have shortcomings in terms of start-up speed and noise suppression. Existing technologies, by increasing the pipe diameter or thickening the pipe wall, have problems such as increased cost or limited noise suppression.

Method used

The system adopts a siphon rainwater hopper design, with anti-vortex rectifying and guiding sections. Combined with elastic suspension components and HDPE pipes, the pipeline layout is optimized. The elastic components buffer stress, control the expansion and contraction of the pipeline caused by temperature differences, and reduce noise.

Benefits of technology

It improves drainage efficiency, ensures system stability, extends service life, and effectively controls noise, creating a quiet indoor environment.

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Abstract

The application relates to the technical field of building roof rainwater drainage, in particular to a siphon type roof rainwater drainage building design structure, which comprises a load-bearing component and a siphon assembly, the siphon assembly comprises a main pipe, a vertical pipe, branch pipes and various hangers, the main pipe, the branch pipes and the vertical pipe are respectively installed on the load-bearing component through corresponding hangers, elastic members are arranged at the connection positions of the hangers and corresponding pipelines, the siphon rainwater drain has a through portion, a flow regulating portion and a flow guiding portion, and an inspection portion is arranged on the vertical pipe. The application effectively realizes siphon type roof rainwater drainage, reduces the influence of vibration through the elastic members, and has the technical effects that the reasonable connection and arrangement of the components facilitate smooth drainage and convenient inspection and maintenance.
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Description

Technical Field

[0001] This application relates to the field of building roof rainwater drainage technology, and in particular to a siphon-type roof rainwater drainage building design structure. Background Technology

[0002] In the field of roof rainwater drainage, with the continuous expansion of building scale and the increasing requirements for drainage efficiency, traditional gravity drainage systems have gradually revealed problems such as slow drainage speed and complex pipe layout, making it difficult to meet the drainage needs of modern buildings. To improve drainage efficiency, siphon roof rainwater drainage systems have emerged. This system utilizes the siphon principle to create negative pressure in the pipes, thereby achieving rapid drainage. It has advantages such as high drainage efficiency and simple pipe layout, and has been increasingly widely used in modern buildings.

[0003] In recent years, with the expansion of building scale and the increase in environmental protection requirements, traditional siphon drainage systems have shown obvious shortcomings in terms of start-up speed and noise suppression.

[0004] In existing technologies, increasing the pipe diameter increases the water flow start-up speed, but this sacrifices the pipe diameter advantage of the siphon system and increases construction costs. In terms of noise suppression, thickening the pipe wall is used, but this can only reduce high-frequency noise locally and has limited effect on suppressing overall airflow noise. Utility Model Content

[0005] To overcome the above problems, this application provides a siphon-type roof rainwater drainage building design structure.

[0006] This application provides a siphonic roof rainwater drainage architectural design structure, which adopts the following technical solution:

[0007] A siphonic roof rainwater drainage architectural design structure includes a load-bearing component and a siphon assembly. The siphon assembly includes a main pipe, a riser, a branch pipe, a first suspension member, a second suspension member, and a third suspension member. The main pipe is horizontally suspended from the load-bearing component via the first suspension member; the branch pipe is vertically installed from the load-bearing component via the second suspension member; one end of the branch pipe is connected to the main pipe, and the other end is fixed with a siphonic rainwater hopper for discharging roof rainwater; the siphonic rainwater hopper has a first passage that communicates with the internal space of the branch pipe, and multiple rectifiers are provided on the siphonic rainwater hopper, which are arranged around and communicate with the first passage; the riser is fixed to the load-bearing component via the third suspension member, and the riser is installed perpendicular to the horizontal ground relative to the load-bearing component; a first elastic member is provided at the connection between the main pipe and the first suspension member, and the first elastic member is fitted onto the main pipe; a second elastic member is provided at the connection between the branch pipe and the second suspension member, and the second elastic member is fitted onto the main pipe.

[0008] By adopting the above technical solutions, the anti-vortex rectifying section can reduce vortices when rainwater enters, allowing air to be discharged more smoothly and accelerating the formation of siphon. The air-blocking device can effectively prevent air from stagnating in the system, ensuring that a stable negative pressure environment is formed in the siphon pipe as soon as possible, thus improving drainage efficiency. At the same time, elastic elements are installed at the connection between the main pipe and the first suspension component, and between the branch pipe and the second suspension component. This allows the pipe to have a certain axial displacement space to release the stress caused by temperature difference, while also limiting the lateral displacement of the pipe. This ensures that the pipe system remains stable when the temperature changes, effectively controlling the expansion and contraction of the pipe caused by temperature difference, and extending the service life of the system.

[0009] Preferably, the first suspension member includes:

[0010] The first lifting part, one end of which is rotatably connected to the load-bearing component;

[0011] The first support is installed horizontally relative to the horizontal ground, and the other end of the first hanging part, which is away from the load-bearing component, is rotatably connected to the first support.

[0012] The first fixing part is fitted onto the main pipe, and one end of the first fixing part is fixedly connected to the first support part; the first elastic element is installed at the connection between the main pipe and the first fixing part.

[0013] By adopting the above technical solution, the first suspension part is rotatably connected to the load-bearing component and the first support part, and the first support part is horizontally installed, which facilitates flexible adjustment of the position and angle of the main pipe; the first fixing part is fitted onto the main pipe and connected to the first support part to fix the main pipe; the first elastic element is installed at the connection between the main pipe and the first fixing part, reducing the number of suspension points of the pipe on the roof truss, so that the expansion and contraction of the pipe can be converted into axial stress, allowing the pipe to have a certain displacement space in the axial direction to release the stress caused by temperature difference, restricting the lateral displacement of the pipe, effectively controlling the expansion and contraction of the pipe caused by temperature difference, ensuring that the pipeline system remains stable when the temperature changes, and extending the service life of the system.

[0014] Preferably, the second suspension member includes:

[0015] The second lifting part, one end of which is rotatably connected to the load-bearing component;

[0016] The second support is installed horizontally relative to the horizontal ground, and the other end of the second suspension part, which is away from the load-bearing component, is rotatably connected to the second support.

[0017] The second fixing part is sleeved on the branch pipe, and one end of the second fixing part is fixedly connected to the second support part.

[0018] The second elastic element is installed at the connection between the branch pipe and the second fixed part.

[0019] By adopting the above technical solution, a second hanging part rotatably connected to the load-bearing component and a horizontally installed second support part are set up, along with a second fixing part used to fit the branch pipe and fixedly connected to the second support part, thus achieving vertical installation of the branch pipe on the load-bearing component. Simultaneously, a second elastic element is installed at the connection between the branch pipe and the second fixing part, allowing the pipe a certain axial displacement space to release stress caused by temperature differences, limiting lateral displacement of the pipe, ensuring the stability of the pipeline system during temperature changes, effectively controlling the expansion and contraction of the pipe due to temperature differences, and extending the system's service life. Furthermore, the specially designed siphon rainwater hopper's rectifying part reduces vortices when rainwater enters, allowing air to be discharged more smoothly, accelerating siphon formation, and ensuring a stable negative pressure environment is quickly formed within the siphon pipe, thereby improving drainage efficiency. At the same time, the first elastic element also helps alleviate stress caused by temperature differences and other factors at the connection between the main pipe and the first hanging part.

[0020] Preferably, the branch pipe is connected to the main pipe via a first drainage component;

[0021] The first drainage component includes:

[0022] The first bend, one end of which is fixedly connected to the branch pipe;

[0023] The Y-shaped connector has two ends that are fixedly connected to the main pipe, and the middle part of the Y-shaped connector is fixedly connected to the first bend.

[0024] By adopting the above technical solutions, the specially designed rainwater hopper can accelerate siphon formation, improve drainage efficiency, and ensure the stable and efficient operation of the siphon system. The HDPE pipe suspension device with its own square steel suspension beam can effectively control the expansion and contraction of the pipe due to temperature differences and extend the service life of the system. The selected HDPE pipe material and special pipe fixing system can reduce noise. On this basis, the branch pipe and the main pipe are connected by the first diversion component consisting of the first bend and the Y-shaped oblique tee, which makes the connection between the branch pipe and the main pipe stable, facilitates the smooth flow of rainwater from the branch pipe into the main pipe, optimizes the drainage path, ensures smooth drainage process, and improves the drainage performance and stability of the entire siphon roof rainwater drainage building design structure.

[0025] Preferably, the riser and the main pipe are connected via a second drain fitting;

[0026] The second drainage device includes:

[0027] The second bend, one end of which is fixedly connected to the riser;

[0028] The first reducing section has one end fixedly connected to the main pipe and the other end fixedly connected to the second bend.

[0029] By adopting the above technical solution, based on the load-bearing components, main pipe, riser, branch pipe, HDPE pipe suspension device with built-in square steel suspension beam, rectifier and elastic element set at the siphon rainwater hopper, a second diversion component is added to connect the riser and the main pipe. The setting of the second bend and the first reducer allows rainwater to flow smoothly from the main pipe into the riser, optimizes the water flow path, ensures smooth drainage of the siphon drainage system, and further improves drainage efficiency.

[0030] Preferably, the siphon rainwater hopper is provided with a flow guide, which is fixedly covered on the siphon rainwater hopper.

[0031] By adopting the above technical solution, the guide section set on the siphon rainwater hopper can ensure that it maintains its normal guiding and air-blocking functions under various weather conditions, such as when it is windy, to avoid displacement and ensure the stable and efficient operation of the siphon system. Combined with the siphon rainwater hopper with rectifying section and the pipe set by suspension and elastic components, the overall solution can improve drainage efficiency, allow air to be discharged smoothly, form a stable negative pressure environment as soon as possible, and control the expansion and contraction of the pipe caused by temperature difference, thereby reducing noise.

[0032] Preferably, the riser is provided with an inspection section, and the height of the inspection section from the horizontal ground ranges from 1 ≤ H ≤ 1.2m.

[0033] By adopting the above technical solution, the inspection unit is set on the riser, and its height from the horizontal ground is within the range of 1≤H≤1.2m. This facilitates daily inspection and maintenance of the drainage system, timely detection and handling of potential system problems, and ensures the normal and stable operation of the siphon roof rainwater drainage building design structure. This structure works in concert with the main pipe, branch pipe, riser and siphon rainwater hopper. The rectifier can reduce rainwater vortices, the elastic element can buffer pipe stress, and different suspension components can achieve reasonable fixation and installation of each pipe, improving drainage efficiency and system stability.

[0034] Preferably, the third suspension member includes:

[0035] The mounting part is fixedly installed on the load-bearing component;

[0036] The third lifting part, one end of which is rotatably connected to the mounting plate;

[0037] The third fixing part is fitted onto the riser, and the other end of the third hanging part, away from the one connected to the mounting plate, is rotatably connected to the third fixing part.

[0038] By adopting the above technical solution, the mounting plate is fixed on the load-bearing component, and the third suspension screw is rotatably connected to the mounting plate and the third anchoring pipe clamp. The third anchoring pipe clamp is sleeved on the riser, which can flexibly fix the riser on the load-bearing component, realize the stable installation of the riser, and help ensure the stability of the entire siphon roof rainwater drainage building design structure and the normal functioning of the drainage function.

[0039] In summary, this application has the following beneficial effects:

[0040] 1. The multiple rectifiers on the siphon rainwater hopper are arranged around the first passage, which can reduce the vortex when rainwater enters, allow air to be discharged more smoothly, accelerate the formation of siphon, and improve drainage efficiency.

[0041] 2. The guide section of the rainwater hopper is fixedly covered on it to ensure that it can maintain normal flow guidance and air isolation functions under various weather conditions, and ensure the stable and efficient operation of the siphon system;

[0042] 3. The connection points between the main pipe and the first suspension component, and between the branch pipe and the second suspension component, are respectively equipped with a first elastic component and a second elastic component, which can buffer the stress on the pipe and protect the pipe.

[0043] 4. The installation of the first, second, and third suspension components reduces the number of suspension points for the pipe on the roof truss, converting the pipe's expansion and contraction into axial stress. Through reasonable design, the expansion and contraction of the pipe can be controlled within the allowable range, ensuring that the expansion and contraction rate of the HDPE pipe does not exceed 3.0%, thus extending the service life of the system.

[0044] 5. By using a reasonable combination of suspension components and elastic components, along with the design of the flow rectifier, drainage efficiency can be improved, the expansion and contraction of the pipes caused by temperature differences can be effectively controlled, and the noise generated by the high-speed water flow during siphon drainage can be reduced to a certain extent, thus improving the indoor environment. Attached Figure Description

[0045] Figure 1 This embodiment discloses an overall structural view of a siphonic roof rainwater drainage building design structure;

[0046] Figure 2 This embodiment discloses a partial structural view of a siphonic roof rainwater drainage building design structure;

[0047] Figure 3 This embodiment discloses a structural view of the siphon rainwater hopper in a siphon roof rainwater drainage building design structure;

[0048] Figure 4 This is a structural view of the first drainage component in a siphonic roof rainwater drainage building design structure disclosed in this embodiment;

[0049] Figure 5 This is a structural view of the second drainage component in a siphonic roof rainwater drainage building design structure disclosed in this embodiment.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Load-bearing component; 2. Siphon assembly; 21. Main pipe; 22. Riser; 220. Inspection section; 23. Branch pipe; 3. First suspension component; 31. First hanging section; 32. First support section; 33. First fixing section; 4. Second suspension component; 41. Second hanging section; 42. Second support section; 43. Second fixing section; 5. Third suspension component; 51. Installation section; 52. Third hanging section; 53. Third fixing section; 6. Siphon rainwater hopper; 61. First passage section; 62. Rectifying section; 63. Guide section; 7. First elastic component; 8. Second elastic component; 9. First diverting component; 91. First bend; 92. Y-type connection section; 10. Second diverting component; 100. Second bend; 101. First reducing section. Detailed Implementation

[0052] The present application will be further described in detail below with reference to the accompanying drawings.

[0053] This application discloses a siphonic roof rainwater drainage building design structure. See also... Figure 1 and Figure 2 It includes load-bearing component 1 and siphon assembly 2. Load-bearing component 1 includes roof steel structure components or concrete load-bearing structure. The siphon assembly 2 includes a main pipe 21, a riser 22, a branch pipe 23, a first suspension member 3, a second suspension member 4, and a third suspension member 5. The main pipe 21 is horizontally suspended from the load-bearing member 1 via the first suspension member 3. The branch pipe 23 is vertically installed on the load-bearing member 1 via the second suspension member 4. One end of the branch pipe 23 is connected to the main pipe 21, and the other end is fixed with a siphon rainwater hopper 6 for discharging rainwater from the roof. The riser 22 is fixed to the load-bearing member 1 via the third suspension member 5, and the riser 22 is installed perpendicular to the horizontal ground relative to the load-bearing member 1. A first elastic member 7 with elasticity is provided at the connection between the main pipe 21 and the first suspension member 3, and the first elastic member 7 is fitted onto the main pipe 21. A second elastic member 8 with elasticity is provided at the connection between the branch pipe 23 and the second suspension member 4, and the second elastic member 8 is fitted onto the branch pipe 23. This achieves the effect of rationally arranging the pipes and using elastic members to buffer stress, ensuring the stable operation of the drainage system. This arrangement and the setting of elastic members enable the pipes to adapt to temperature changes and avoid damage caused by stress concentration.

[0054] For details, see Figure 1 and Figure 2The main pipe 21, riser 22 and branch pipe 23 are made of high-density polyethylene (HDPE) pipe. Utilizing the characteristics of HDPE pipe, such as corrosion resistance, impact resistance, light weight for easy installation, tempering treatment before leaving the factory, and low linear expansion coefficient with temperature changes, combined with the fixing system of the first suspension component 3, the second suspension component 4 and the third suspension component 5, the noise during siphon drainage is effectively reduced from both the pipe material and installation aspects, creating a quiet indoor environment.

[0055] For details, see Figure 1 and Figure 3 The siphon rainwater hopper 6 includes a first through-hole 61 and multiple rectifiers 62. The first through-hole 61 is specifically a circular through-hole, serving as a channel for rainwater to flow into the branch pipe 23 and communicating with the internal space of the branch pipe 23. In other embodiments, the first through-hole 61 can also be square or other regular shapes, as long as it ensures smooth rainwater flow. Multiple rectifiers 62 are arranged around the first through-hole 61 and communicate with it. Each rectifier 62 includes a rectifier channel and a rectifier plate. In this embodiment, the rectifier channel is a long, narrow channel evenly distributed along the circumference of the sidewall of the siphon rainwater hopper 6. The rectifier plate is a plate-like structure installed inside the siphon rainwater hopper 6, with one end connected to the opening of the rectifier channel, serving to guide water flow and reduce vortices. Furthermore, the rectifier plate is made of stainless steel with a smooth surface, which better guides water flow. Together, they make the rainwater flow more smoothly, reduce air mixing, and accelerate the formation of the siphon effect.

[0056] See Figure 1 and Figure 3 In addition, the siphon rainwater hopper 6 is equipped with a guide section 63, which is fixedly mounted on the siphon rainwater hopper 6. The guide section 63 includes a guide cover, which is specifically a circular cover, and is fixed to the siphon rainwater hopper 6 by bolts. Furthermore, the guide section 63 is made of stainless steel with a smooth surface, which provides better durability. Its function is to prevent rainwater from splashing out under windy or other weather conditions, while guiding rainwater to flow more concentratedly into the siphon rainwater hopper 6.

[0057] Further, see Figure 1 and Figure 2 The first suspension member 3 includes a first hanging part 31, a first support part 32, and a first fixing part 33. One end of the first hanging part 31 is rotatably connected to the load-bearing member 1. The first support part 32 is horizontally installed relative to the horizontal ground, and the other end of the first hanging part 31, away from the load-bearing member 1, is rotatably connected to the first support part 32. The first fixing part 33 is fitted onto the main pipe 21, and one end of the first fixing part 33 is fixedly connected to the first support part 32. A first elastic member 7 is installed at the connection between the main pipe 21 and the first fixing part 33.

[0058] Specifically, the first suspension part 31 includes a first suspension screw, one end of which is rotatably connected to the load-bearing component 1 via a nut, and the other end is rotatably connected to the first support part 32. The first support part 32 includes a first square steel, which is installed horizontally relative to the horizontal ground. The first fixing part 33 includes a first anchoring pipe clamp, which is sleeved on the main pipe 21, and one end of the first anchoring pipe clamp is fixedly connected to the first support part 32 by welding or bolts. The first elastic element 7 includes a first rubber pad, which is installed at the connection between the main pipe 21 and the first anchoring pipe clamp. The first rubber pad has good elasticity and can buffer the expansion and contraction stress generated by the main pipe 21 when the temperature changes.

[0059] Further, see Figure 1 and Figure 2 The second suspension member 4 includes a second hanging part 41, a second support part 42, and a second fixing part 43. One end of the second hanging part 41 is rotatably connected to the load-bearing member 1. The second support part 42 is horizontally installed relative to the horizontal ground, and the other end of the second hanging part 41, away from the load-bearing member 1, is rotatably connected to the second support part 42. The second fixing part 43 is sleeved on the branch pipe 23, and one end of the second fixing part 43 is fixedly connected to the second support part 42. The second elastic member 8 is installed at the connection between the branch pipe 23 and the second fixing part 43.

[0060] Specifically, the second suspension part 41 includes a second suspension screw, one end of which is rotatably connected to the load-bearing component 1 via a nut, and the other end is rotatably connected to the second support part 42. The second support part 42 includes a second square steel, which is installed horizontally relative to the horizontal ground. The second fixing part 43 includes a second anchoring pipe clamp, which is sleeved on the branch pipe 23, and one end of the second anchoring pipe clamp is fixedly connected to the second support part 42 by welding or bolts. The second elastic element 8 includes a second rubber pad, which is installed at the connection between the main pipe 21 and the second anchoring pipe clamp. The second rubber pad has good elasticity and can buffer the expansion and contraction stress generated by the main pipe 21 when the temperature changes.

[0061] Further, see Figure 1 and Figure 2 The third suspension component 5 includes a mounting part 51, a third lifting part 52, and a third fixing part 53. The mounting part 51 is fixedly mounted on the load-bearing component 1. One end of the third lifting part 52 is rotatably connected to the mounting plate. The third fixing part 53 is sleeved on the riser 22, and the other end of the third lifting part 52 away from the connection with the mounting plate is rotatably connected to the third fixing part 53.

[0062] Specifically, the mounting part 51 includes a mounting plate, which is a flat metal plate fixed to the load-bearing component 1 by bolts. The third suspension part 52 includes a third suspension screw. The third fixing part 53 includes a third anchoring pipe clamp, which is sleeved on the riser 22. One end of the third suspension screw is rotatably connected to the mounting plate by a nut, and the other end is rotatably connected to the nut of the third anchoring pipe clamp sleeved on the riser 22. The above structure allows the riser 22 to be stably fixed to the load-bearing component 1, while also allowing a certain amount of movement to adapt to temperature changes.

[0063] Further, see Figure 1 and Figure 4 When a branch pipe 23 is connected to the main pipe 21, the branch pipe 23 and the main pipe 21 are connected through a first draining component 9. The first draining component 9 includes a first bend 91 and a Y-shaped connecting part 92. One end of the first bend 91 is fixedly connected to the branch pipe 23. Both ends of the Y-shaped connecting part 92 are fixedly connected to the main pipe 21, and the middle part of the Y-shaped connecting part 92 is fixedly connected to the first bend 91.

[0064] Specifically, the first bend 91 includes a first bend pipe, which is specifically a 45-degree elbow. The Y-shaped connection 92 includes a Y-shaped oblique tee, which is specifically a Y-shaped 45-degree oblique tee. One end of the first bend pipe is fixed to the branch pipe 23 by hot-melt welding and electrofusion connection, and the other end is also fixed to the middle of the Y-shaped oblique tee by hot-melt welding and electrofusion connection, thereby changing the direction of water flow.

[0065] The two ends of the Y-shaped oblique tee connected to the main pipe 21 are also fixed by hot melt welding and electrofusion connection respectively. The design of the Y-shaped connection part 92 allows the water flow of the branch pipe 23 to flow smoothly into the main pipe 21, reducing the resistance and collision of the water flow.

[0066] For details, see Figure 1 and Figure 5 The riser 22 is connected to the main pipe 21 via a second draining component 10, which includes a second bend 100 and a first reducer 101. One end of the second bend 100 is fixedly connected to the branch pipe 23; one end of the first reducer 101 is fixedly connected to the main pipe 21, and the other end is fixedly connected to the second bend 100.

[0067] The second bend 100 includes a second bend pipe, which is specifically formed by welding two 45° elbows together. The first reducer 101 includes a first reducer pipe. One end of the second bend 100 is fixed to the riser 22 by hot-melt welding and electrofusion connection, used to change the direction of water flow. One end of the first reducer 101 is fixed to the main pipe 21 by hot-melt welding and electrofusion connection, and the other end is fixed to the second bend 100 by hot-melt welding and electrofusion connection. The first reducer 101 can be designed according to the difference in pipe diameter between the main pipe 21 and the riser 22, so that the water flow can smoothly transition between pipes of different diameters, reducing the impact and pressure loss of water flow.

[0068] Specifically, the riser 22 is equipped with an inspection section 220, and the height of the inspection section 220 from the horizontal ground ranges from 1 to H to 1.2m. In this embodiment, H is 1m.

[0069] See Figure 1 and Figure 2 The inspection unit 220 includes an inspection port, specifically a circular opening equipped with a removable cover. This height range facilitates routine inspections and maintenance by personnel. The inspection unit 220 is made of metal and is fixed to the riser 22 via threaded connections or other means.

[0070] The working principle of a siphonic roof rainwater drainage architectural design structure proposed in this application is as follows:

[0071] The load-bearing component 1 supports the siphon assembly 2. The main pipe 21 is horizontally suspended by the first suspension member 3, the branch pipe 23 is vertically installed by the second suspension member 4, and the riser 22 is vertically fixed by the third suspension member 5. The main pipe 21, branch pipe 23, and suspension members are respectively equipped with a first elastic member 7 and a second elastic member 8 at their connections. Rainwater is guided and concentrated into the siphon rainwater hopper 6 by the guide section 63. The rectifying section 62's rectifying channel and rectifying plate guide the water flow and reduce vortices, allowing rainwater to flow smoothly into the branch pipe 23, reducing air mixing, and accelerating the formation of the siphon effect. The water flow in the branch pipe 23 smoothly merges into the main pipe 21 through the first diverting member 9 (including the first bend 91 and the Y-shaped connection 92). The riser 22 is connected to the main pipe 21 through the second diverting member 10 (including the second bend 100 and the first reducing section 101), achieving a smooth transition of water flow between different pipe diameters. The HDPE pipe material, combined with the suspension fixing system, utilizes elastic members to buffer the expansion and contraction stress caused by temperature changes, adapting to temperature variations and avoiding stress concentration.

[0072] This technical solution achieves functions such as rational pipeline layout, stress buffering using elastic components, and reduced drainage noise. Its advantages lie in the corrosion resistance, impact resistance, light weight, and low linear expansion coefficient of HDPE pipes. Combined with elastic and suspension components, the pipeline can adapt to temperature changes, ensuring stable operation of the drainage system. The design of the siphon rainwater hopper 6 reduces air mixing and rainwater splashing, accelerating siphon formation. The drainage components reduce water flow resistance and pressure loss, and the inspection port facilitates maintenance. It solves the problems of existing technologies that sacrifice pipe diameter advantages and increase costs by increasing the water flow start-up speed, that thicker pipe walls only locally reduce high-frequency noise with limited overall airflow noise suppression, and that pipelines are easily damaged due to temperature stress concentration.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A siphonic roof rainwater drainage architectural design structure, comprising a load-bearing component (1) and a siphonic assembly (2), characterized in that: The siphon assembly (2) includes a main pipe (21), a riser (22), a branch pipe (23), a first suspension member (3), a second suspension member (4), and a third suspension member (5). The main pipe (21) is horizontally suspended on the load-bearing component (1) through the first suspension member (3). The branch pipe (23) is vertically installed on the load-bearing component (1) via the second suspension member (4); One end of the branch pipe (23) is connected to the main pipe (21), and the other end is fixed with a siphon rainwater hopper (6) for discharging rainwater from the roof; The siphon rainwater hopper (6) has a first passage (61), which is connected to the internal space of the branch pipe (23). The siphon rainwater hopper (6) is provided with multiple rectifiers (62), which are arranged around the first passage (61) and connected to the first passage (61). The riser (22) is fixed to the load-bearing member (1) by the third suspension member (5), and the riser (22) is installed perpendicular to the horizontal ground relative to the load-bearing member (1); The connection between the main pipe (21) and the first suspension component (3) is provided with a first elastic component (7), which is fitted onto the main pipe (21); A second elastic element (8) with elasticity is provided at the connection between the branch pipe (23) and the second suspension member (4), and the second elastic element (8) is fitted onto the main pipe (21).

2. The siphonic roof rainwater drainage building design structure according to claim 1, characterized in that: The first suspension member (3) includes: The first lifting part (31) is rotatably connected to the load-bearing component (1) at one end; The first support (32) is installed horizontally relative to the horizontal ground, and the other end of the first hanging part (31) away from the load-bearing member (1) is rotatably connected to the first support (32); The first fixing part (33) is fitted onto the main tube (21), and one end of the first fixing part (33) is fixedly connected to the first support part (32); the first elastic member (7) is installed at the connection between the main tube (21) and the first fixing part (33).

3. The siphonic roof rainwater drainage building design structure according to claim 2, characterized in that: The second suspension component (4) includes: The second lifting part (41) is rotatably connected to the load-bearing component (1) at one end; The second support (42) is installed horizontally relative to the horizontal ground, and the other end of the second hanging part (41) away from the load-bearing member (1) is rotatably connected to the second support (42); The second fixing part (43) is sleeved on the branch pipe (23), and one end of the second fixing part (43) is fixedly connected to the second support part (42); The second elastic element (8) is installed at the connection between the branch pipe (23) and the second fixing part (43).

4. The siphonic roof rainwater drainage building design structure according to claim 2, characterized in that: The branch pipe (23) is connected to the main pipe (21) via the first draining component (9); The first drainage component (9) includes: The first bend (91) has one end fixedly connected to the branch pipe (23); Y-shaped connector (92), both ends of which are fixedly connected to the main pipe (21), and the middle part of the Y-shaped connector (92) is fixedly connected to the first bend (91).

5. The siphonic roof rainwater drainage building design structure according to claim 2, characterized in that: The riser (22) and the main pipe (21) are connected by a second draining device (10): The second drainage component (10) includes: The second bend (100) has one end fixedly connected to the riser (22); The first reducing part (101) is fixedly connected at one end to the main pipe (21) and at the other end to the second bend (100).

6. The siphonic roof rainwater drainage building design structure according to claim 5, characterized in that: The siphon rainwater hopper (6) is provided with a guide section (63), which is fixedly covered on the siphon rainwater hopper (6).

7. The siphonic roof rainwater drainage building design structure according to claim 2, characterized in that: The riser (22) is provided with an inspection section (220), and the height of the inspection section (220) from the horizontal ground ranges from 1≤H≤1.2m.

8. The siphonic roof rainwater drainage building design structure according to claim 1, characterized in that: The third suspension element (5) includes: Mounting part (51) is fixedly installed on the load-bearing component (1); The third lifting part (52) has one end rotatably connected to the mounting plate; The third fixing part (53) is fitted onto the riser (22), and the other end of the third hanging part (52) away from the mounting plate is rotatably connected to the third fixing part (53).