Building roof drain pipe and air duct integrated structure

By integrating ventilation ducts and drainage pipes into the building roof structure, the problems of leakage risk and space occupation caused by the independent ventilation ducts and drainage pipes in traditional buildings are solved. This achieves efficient waterproofing and smoke and ventilation effects, reduces steel consumption, and improves construction efficiency.

CN224134078UActive Publication Date: 2026-04-17SHENYANG HUAYU ARCHITECTURAL DESIGN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENYANG HUAYU ARCHITECTURAL DESIGN CO LTD
Filing Date
2025-05-16
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In traditional buildings, ventilation ducts and drainage pipes protrude independently from the roof, causing repeated damage to the roof waterproofing layer, resulting in a high risk of leakage and occupying valuable roof area.

Method used

Design an integrated structure for building roof drainage pipes and air ducts. By combining components such as roof waterproofing layer, water collection slope, mounting base structure, partition ribs and water-stop steel plate, the air duct and drainage pipe are integrated, reducing the number of openings, utilizing the residual heat of the air duct to prevent the drainage pipe from freezing, and preventing rainwater from entering the air duct through the partition rib structure. A filter cylinder is installed on the surface of the drainage pipe to filter impurities.

Benefits of technology

It reduces the risk of leakage, saves steel consumption, improves construction efficiency, ensures effective smoke and ventilation, prevents drainage pipe blockage, and enhances the waterproofing effect of the roof.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224134078U_ABST
Patent Text Reader

Abstract

The utility model discloses a building roof drain pipe and air duct integrated structure which comprises a roof and a roof waterproof layer, a separation rib structure penetrates through a mounting base structure and is communicated with a drain pipe, a water stop steel plate is pre-buried at the lower end of the mounting base structure, the water stop steel plate is located in the roof, and the water stop steel plate is connected with the roof through the roof waterproof layer. Through the effect of the installation base structure, the number of holes formed in the roof can be reduced, the leakage probability is reduced, the drainage pipe is prevented from being frozen in winter through waste heat of an air duct, the steel consumption is reduced by sharing a supporting and hanging frame, and the construction efficiency is improved through a modularized prefabricated base; the position, provided with the mounting base structure, of the roof is effectively waterproof, the cavity is divided into the air channel hole and the drainage channel hole through the separation rib structure, rainwater can be effectively prevented from entering the air channel through cooperation of the air channel and the bent pipe, and the smoke and air exhaust effect is guaranteed.
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Description

Technical Field

[0001] This utility model relates to the field of building roof construction technology, specifically to an integrated structure of roof drainage pipe and ventilation duct for a building. Background Technology

[0002] Roof ducts are mainly used in building ventilation systems to promote air circulation through natural or mechanical means and ensure indoor air quality. Common materials include galvanized steel sheets, stainless steel, or PVC. Drainage pipes are responsible for rainwater discharge from the roof and are usually made of PVC, HDPE, or cast iron. In traditional buildings, ducts (smoke exhaust / fresh air) and drainage pipes usually extend independently through the roof, which has the following drawbacks: separate openings lead to repeated damage to the roof waterproofing layer, resulting in a high risk of leakage; and excessive spacing between pipes occupies an effective roof area. Utility Model Content

[0003] The purpose of this utility model is to provide an integrated structure for building roof drainage pipes and ventilation ducts to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated structure for a building roof drainage pipe and a ventilation duct, comprising a roof and a roof waterproof layer. The roof waterproof layer is fixedly mounted on the upper end of the roof. An installation base structure is embedded in the inner wall of the roof. A ventilation duct and a drainage pipe are respectively fixedly connected through the inner wall of the installation base structure. A bend is fixedly connected to the upper end of the ventilation duct. A parapet wall is connected to one side of the upper end of the roof through the roof waterproof layer. A water collection slope is fixedly mounted on the surface of the roof waterproof layer. The water collection slope slopes downward on the side near the installation base structure. A partition rib structure is fixedly mounted in the middle of the surface of the installation base structure. The partition rib structure penetrates the installation base structure and is connected to the drainage pipe. A water-stop steel plate is pre-embedded at the lower end of the installation base structure. The water-stop steel plate is located inside the roof.

[0005] Preferably, the mounting base structure includes a mounting base that is fitted into the roof. The inner wall of the mounting base has two symmetrically connected holes. The air duct and the drain pipe are respectively fixedly connected through the two holes. A waterproof membrane flange is fixedly fitted to the outer periphery of the mounting base.

[0006] Preferably, the partition rib structure includes a partition rib, which is fixedly assembled to the middle of the surface of the mounting base structure. A water collection groove is formed on the surface of the partition rib, and a through pipe is connected to the lower end of the water collection groove. The through pipe is inserted into the partition rib and passes through the mounting base structure to connect with the drain pipe.

[0007] Preferably, a filter cylinder is fixedly connected to the upper end of the drain pipe.

[0008] Compared with existing technologies, the beneficial effects of this utility model are as follows: The roof waterproofing layer ensures the roof's waterproofing effect; the water collection slope facilitates rainwater collection and entry into the drainage pipe; the installation base structure reduces the number of roof openings, lowering the probability of leakage; the use of residual heat from the ductwork prevents the drainage pipe from freezing in winter; shared supports save steel consumption; the modular prefabricated base improves construction efficiency; the water-stop steel plate effectively waterproofs the areas on the roof where the installation base structure is located; the partition rib structure divides the cavity into ductwork holes and drainage holes; the cooperation between the ductwork and the bend effectively prevents rainwater from entering the ductwork, ensuring effective smoke and air exhaust; and the filter cartridge on the surface of the drainage pipe filters out impurities such as leaves, preventing blockage. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0010] Figure 2 This is a planar assembly drawing of the present invention;

[0011] Figure 3 This is a three-dimensional schematic diagram of the partition rib structure.

[0012] In the diagram: 1-Roof waterproofing layer, 2-Water collection slope, 3-Roof, 4-Installation base structure, 41-Installation base, 42-Drill hole, 43-Waterproof membrane flange, 5-Waterstop steel plate, 6-Air duct, 7-Bend, 8-Separation rib structure, 81-Separation rib, 82-Water collection trough, 83-Pass pipe, 9-Filter cylinder, 10-Drainage pipe, 11-Parapet wall. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-3This utility model provides an integrated structure for a building roof drainage pipe and air duct, including a roof 3 and a roof waterproof layer 1. The roof waterproof layer 1 is fixedly installed at the upper end of the roof 3. An installation base structure 4 is embedded in the inner wall of the roof 3. An air duct 6 and a drainage pipe 10 are respectively fixedly connected through the inner wall of the installation base structure 4. A bend 7 is fixedly connected to the upper end of the air duct 6. A parapet wall 11 is connected to one side of the upper end of the roof 3 through the roof waterproof layer 1. A water collection slope 2 is fixedly installed on the surface of the roof waterproof layer 1. The water collection slope 2 slopes downward on the side near the installation base structure 4. A partition rib structure 8 is fixedly installed in the middle of the surface of the installation base structure 4. The partition rib structure 8 penetrates the installation base structure 4 and is connected to the drainage pipe 10. A water-stop steel plate 5 is pre-embedded at the lower end of the installation base structure 4. The water-stop steel plate 5 is located inside the roof 3.

[0015] The roof waterproofing layer 1 ensures the roof's waterproofing effect. The water collection slope 2 facilitates rainwater collection and entry into the drain pipe 10. The installation base structure 4 reduces the number of openings in the roof 3, lowering the probability of leakage. The residual heat of the air duct 6 prevents the drain pipe 10 from freezing in winter. Shared supports save steel consumption. The modular prefabricated base improves construction efficiency. The water-stop steel plate 5 effectively waterproofs the location of the installation base structure 4 on the roof. The partition rib structure 8 divides the cavity into air duct holes and drain holes. The cooperation between the air duct 6 and the bend 7 effectively prevents rainwater from entering the air duct 6, ensuring effective smoke and ventilation. The drain pipe 10 is equipped with a filter cylinder 9 to filter impurities such as leaves, preventing blockage of the drain pipe 10.

[0016] The mounting base structure 4 includes a mounting base 41, which is fitted into the roof 3. The inner wall of the mounting base 41 has two symmetrically connected holes 42. The air duct 6 and the drain pipe 10 are respectively fixedly connected to the two holes 42. The outer periphery of the mounting base 41 is fixedly fitted with a waterproof membrane flange 43.

[0017] The shared roof mounting base 41 has an internal cavity divided into air duct holes 42 and drainage holes 42. The air duct 6 and the drainage pipe 10 pass through in parallel with a center distance of ≤300mm. The integrated waterproof membrane flange 43 covers the outer perimeter of the base. The mounting base 41 is made of 304 stainless steel and is stamped. The center distance between the air duct 6 and the drainage pipe 10 is set at 250mm. The waterproofing treatment adopts a double protection of polyurethane coating + modified bitumen membrane.

[0018] The partition rib structure 8 includes a partition rib 81, which is fixedly assembled to the middle of the surface of the mounting base structure 4. A water collection groove 82 is provided on the surface of the partition rib 81. A through pipe 83 is connected to the lower end of the water collection groove 82. The through pipe 83 is inserted into the partition rib 81 and passes through the mounting base structure 4 to connect with the drain pipe 10.

[0019] The partition rib 81 divides the internal cavity of the mounting base 41 into an air duct hole 42 and a drainage hole 42. At the same time, the water collection trough 82 collects rainwater and connects it to the drainage pipe 10 through the connecting pipe 83.

[0020] The upper end of the drain pipe 10 is fixedly connected to a filter cylinder 9.

[0021] A filter cylinder 9 is installed on the surface of the drain pipe 10 to filter out impurities such as leaves and prevent clogging of the drain pipe 10.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated structure of a building roof drain and a wind channel, characterized by: The roof includes a roof (3) and a roof waterproofing layer (1). The roof waterproofing layer (1) is fixedly installed on the upper end of the roof (3). An installation base structure (4) is embedded in the inner wall of the roof (3). A duct (6) and a drain pipe (10) are respectively connected through the inner wall of the installation base structure (4). A bend pipe (7) is fixedly connected to the upper end of the duct (6). A parapet wall (11) is connected to one side of the upper end of the roof (3) through the roof waterproofing layer (1). A water collection slope (2) is fixedly installed on the surface of the waterproof layer (1). The water collection slope (2) slopes downward on the side close to the mounting base structure (4). A partition rib structure (8) is fixedly installed in the middle of the surface of the mounting base structure (4). The partition rib structure (8) penetrates the mounting base structure (4) and is connected to the drainage pipe (10). A water-stop steel plate (5) is pre-embedded at the lower end of the mounting base structure (4). The water-stop steel plate (5) is located inside the roof (3).

2. A building roof drain and wind channel integrated structure according to claim 1, wherein: The mounting base structure (4) includes a mounting base (41), which is fitted into the roof (3). The inner wall of the mounting base (41) has two symmetrically connected channel holes (42). The air duct (6) and the drain pipe (10) are respectively fixedly connected to the two channel holes (42). The outer periphery of the mounting base (41) is fixedly fitted with a waterproof membrane flange (43).

3. The integrated structure of a building roof drain and a wind channel according to claim 1, wherein: The partition rib structure (8) includes a partition rib (81), which is fixedly assembled to the middle of the surface of the mounting base structure (4). A water collection groove (82) is provided on the surface of the partition rib (81), and a through pipe (83) is connected to the lower end of the water collection groove (82). The through pipe (83) is inserted into the partition rib (81) and passes through the mounting base structure (4) to connect with the drain pipe (10).

4. The integrated structure of a building roof drain and a wind channel according to claim 1, wherein: The upper end of the drain pipe (10) is fixedly connected to a filter cylinder (9).