A vented roof structure
By combining rigid pipe sections and flexible pipe sections with a waterproof and leak-stopping structure, the problems of insufficient exhaust pipe height and insufficient waterproof performance were solved, thereby increasing the exhaust pipe height and enhancing its waterproof performance to adapt to complex site layouts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING CONSTRUCTION ENGINEERING GROUP CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-12
AI Technical Summary
In existing roof designs, insufficient height of the exhaust pipes leads to the risk of rainwater backflow, and the traditional exhaust pipe materials and joints occupy space, affecting the roof's waterproofing performance.
It adopts a combination of rigid pipe sections and flexible pipe sections, combined with a waterproof and leak-stopping structure, to increase the height of the exhaust pipe and enhance its sealing performance, adapting to complex site layouts.
It effectively increases the height of the exhaust pipe, eliminates the risk of rainwater backflow, enhances the waterproof performance of the roof, adapts to complex component layouts, and reduces the risk of leakage.
Smart Images
Figure CN224351525U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building construction, and in particular to a ventilated roof structure. Background Technology
[0002] In the field of architecture, roof design is a crucial aspect. As building functional requirements become increasingly diverse, engineering designs are also becoming more complex. For example, in some projects, existing roof construction methods are modified and expanded based on actual needs. The upright roof is a relatively common roof type, and its construction may encounter various new demands and challenges. When the design unit adds an elevated runway to an existing upright roof, the overall roof thickness increases, resulting in the original roof vent pipe height being lower than the standard requirement of 250mm, the effective flashing of the parapet wall being too low, and a risk of backflow into the vent pipes during heavy rains in the rainy season.
[0003] In the past, when faced with problems such as insufficient roof vent height and low effective flashing of parapet walls, the industry typically had some conventional solutions. For the vent pipes, the length was usually extended, and rigid stainless steel or PVC pipes were generally used as the vent pipe material. Various connectors were used to connect the different pipes.
[0004] However, these existing conventional methods have obvious drawbacks. Because traditional exhaust pipes are made of hard stainless steel or PVC, and the various joints used for connection require a lot of space, they are difficult to adapt to parapet walls with many shapes, which seriously affects the normal use and waterproof performance of the roof. Utility Model Content
[0005] To address the issue of low exhaust pipe height and eliminate the risk of leakage, this application provides an exhaust roof structure.
[0006] The exhaust roof structure provided in this application adopts the following technical solution:
[0007] A ventilated roof structure includes an original vent pipe and a parapet wall. The outlet end of the original vent pipe extends to the vertical side of the parapet wall. A connected rigid pipe section and a flexible pipe section are inserted into the original vent pipe. The outlet end of the flexible pipe section extends out of the original vent pipe and surrounds the top side of the parapet wall, thus extending to the outside of the parapet wall. The outlet end of the flexible pipe section is arranged downwards. A waterproof and leak-stopping structure is provided between the outlet of the original vent pipe and the flexible pipe section.
[0008] By adopting the above technical solutions, the height of the exhaust pipe can be effectively increased by increasing the thickness of the roof construction, thus eliminating the risk of rainwater backflow. It can adapt to more complex site conditions and can be flexibly adjusted in position to meet various components without being restricted. The waterproof and leak-stopping structure can prevent rainwater from seeping into the exhaust pipe. At the same time, the use of inorganic waterproof and leak-stopping materials can also prevent the dripping waterproof coating from blocking the exhaust pipe, and it has good sealing performance and plasticity.
[0009] Optionally, the waterproof and leak-stopping structure includes geotextile and a waterproof sealant, with the geotextile placed in the lower layer and the waterproof sealant placed in the upper layer.
[0010] By adopting the above technical solution, a waterproof and leak-stopping structure consisting of a lower layer of geotextile and an upper layer of waterproof material is installed between the original exhaust pipe outlet and the hose section. This can prevent the dripping waterproof coating from blocking the exhaust pipe. Compared with waterproof membrane, it is more adaptable to complex and changing sites and has better sealing and plasticity.
[0011] Optionally, the original exhaust pipe is surrounded by a first insulation layer.
[0012] By adopting the above technical solution, the original exhaust pipe is wrapped with a first insulation layer, which can play a role in heat preservation.
[0013] Optionally, the periphery of the hose segment is wrapped with a second insulation layer.
[0014] By adopting the above technical solution, wrapping the periphery of the flexible hose section with a second insulation layer can insulate the flexible hose section, prevent the performance of the hose from being affected by temperature changes, and, in conjunction with other structures, further ensure the stability of the entire exhaust roof structure, continuously and effectively increase the height of the exhaust pipe, and eliminate the risk of rainwater backflow.
[0015] Optionally, the exhaust roof structure further includes, from bottom to top, a floor deck, a shock-absorbing pad, a slope-finding layer, a leveling layer, a protective layer, and an aerial runway layer, with the original exhaust pipe located between the shock-absorbing pad and the slope-finding layer.
[0016] By adopting the above technical solutions, the floor deck can provide basic load-bearing capacity, the shock-absorbing pad can reduce the impact of vibration, the slope layer facilitates drainage, the leveling layer makes the surface flat, the protective layer plays a protective role, the sky runway layer meets the usage requirements, and setting the original exhaust pipe between the shock-absorbing pad and the slope layer helps to make reasonable use of space and avoid the exhaust pipe being interfered with by the construction of other layers.
[0017] Optionally, a waterproof layer is provided between the leveling layer and the protective layer.
[0018] By adopting the above technical solution, a waterproof layer can be set between the leveling layer and the protective layer, which can further enhance the waterproof performance of the roof.
[0019] Optionally, the leveling layer and waterproof layer extend upwards to cover the vertical side of the original exhaust pipe and the vertical side and top side of the hose section.
[0020] By adopting the above technical solution, and by extending the leveling layer and waterproof layer upwards to cover the original exhaust pipe and hose section, waterproof protection can be further enhanced.
[0021] Optionally, decorative elements are provided on the periphery of the parapet wall and on the outside of the leveling layer and waterproof layer.
[0022] By adopting the above technical solution, the decorative body can not only decorate the exhaust roof structure, but also protect the hose section and extend its service life.
[0023] Optionally, the diameter of the rigid pipe section and the flexible pipe section is 1 / 3 to 2 / 3 of the original exhaust pipe diameter.
[0024] By adopting the above technical solution, the rigid pipe section and the flexible pipe section can be smoothly inserted into the original exhaust pipe, while ensuring that a certain space is left in the original exhaust pipe for gas circulation. With the extension of the external flexible pipe, the height of the exhaust pipe can be effectively increased, eliminating the risk of rainwater backflow, and better adapting to complex on-site conditions, making it easier to flexibly adjust the position when encountering various components.
[0025] Optionally, the rigid pipe section is a PVC pipe.
[0026] By adopting the above technical solution, the PVC pipe is connected to the flexible pipe section as a rigid pipe section and inserted into the original exhaust pipe. This ensures that it does not bend when inserted and is easy to connect with a flexible pipe of appropriate length. It can effectively increase the height of the exhaust pipe, eliminate the risk of rainwater backflow, and adapt to more complex on-site conditions. It can be flexibly adjusted in position to meet various components without being restricted.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. Effectively increases the height of the exhaust pipe, eliminating the risk of rainwater backflow;
[0029] 2. It can adapt to relatively complex on-site conditions and its position can be flexibly adjusted when encountering various components;
[0030] 3. The waterproof and leak-stopping structure avoids the waterproof coating from blocking the exhaust pipe, and has good sealing performance and plasticity. Attached Figure Description
[0031] Figure 1 This is a structural schematic diagram of an embodiment of this application.
[0032] Explanation of reference numerals in the attached figures:
[0033] 10. Original exhaust pipe; 11. Floor deck; 12. Vibration damping pad; 13. First insulation layer; 14. Second insulation layer; 15. Slope-finding layer; 16. Leveling layer; 17. Waterproof layer; 18. Protective layer; 19. Sky runway layer; 20. Parapet wall; 30. Rigid pipe section; 31. Flexible pipe section; 40. Waterproof and leak-stopping structure; 41. Geotextile; 42. Waterproof sealant; 50. Decorative elements. Detailed Implementation
[0034] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.
[0035] This application mainly adopts a combination of various pipe materials and waterproofing treatment to increase the height of the exhaust pipe, thereby achieving the effects of increasing the height of the exhaust pipe, eliminating the risk of rainwater backflow, and adapting to complex site conditions. The following is a further detailed description of this application.
[0036] The exhaust roof structure provided in this application embodiment refers to... Figure 1 The system includes an original exhaust pipe 10, a parapet wall 20, a rigid pipe section 30, a flexible pipe section 31, and a waterproof sealing structure 40. The exhaust pipe 10 extends to the vertical side of the parapet wall 20. The rigid pipe section 30 and the flexible pipe section 31 are connected and inserted into the original exhaust pipe 10. The exhaust pipe section 31 extends out of the original exhaust pipe 10 and circles the top of the parapet wall 20 to its outer side, with its exhaust end facing downwards. The waterproof sealing structure 40 is positioned between the exhaust outlet of the original exhaust pipe 10 and the flexible pipe section 31. This structural design achieves the beneficial effects of increasing the exhaust pipe height, eliminating the risk of rainwater backflow, and adapting to complex site conditions. The combination of the rigid pipe section 30 and the flexible pipe section 31 effectively extends the exhaust pipe height; the flexibility of the flexible pipe section 31 allows it to adapt to the complex shape of the parapet wall 20; and the waterproof sealing structure 40 ensures the waterproof performance of the connection points.
[0037] Optionally, the rigid pipe section 30 and the flexible pipe section 31 are connected by a sleeve connection, with one end of the rigid pipe section 30 tightly fitted into one end of the flexible pipe section 31 to ensure the sealing and stability of the connection. Alternatively, they can be connected by a snap-fit connection or a threaded connection. The rigid pipe section 30 and the flexible pipe section 31 form an extended exhaust pipe assembly.
[0038] Optionally, the rigid section 30 is made of PVC pipe. This material has a certain degree of hardness and strength, ensuring that it will not easily deform or bend when inserted into the original exhaust pipe 10, providing a stable passage for subsequent exhaust. A common alternative is PPR pipe, which also has a certain degree of rigidity and is corrosion resistant.
[0039] The flexible hose segment 31 is made of a soft and flexible material, making it easy to wrap around and arrange around the parapet wall 20, and can easily adapt to various complex shapes and site environments. Its alternative feature is a rubber hose, which also has good flexibility and weather resistance. The hose segment 31 is selected to an appropriate length according to the actual situation to ensure that it can extend to the outside of the parapet wall 20 and reach the required height.
[0040] The logic behind this combination of rigid pipe section 30 and flexible pipe section 31 is that the rigidity of the rigid pipe section 30 is first used to ensure that the original exhaust pipe 10 can be smoothly inserted, and then the flexibility of the flexible pipe section 31 is used to achieve subsequent flexible layout and height increase. The two work together to effectively increase the height of the exhaust pipe and adapt to complex sites.
[0041] Preferably, the waterproof and leak-stopping structure 40 includes geotextile 41 and a watertight material 42.
[0042] Geotextile 41 is placed in the lower layer. It has good filtering and isolation functions, preventing debris from entering the connection between the exhaust pipe and the hose section 31, and also provides some cushioning. A common alternative is fiberglass cloth, which also has filtering and isolation functions. Geotextile 41 is laid in the gap between the original exhaust pipe 10 outlet and the hose section 31, closely fitting the surrounding structure.
[0043] Waterproof 42, applied to the upper layer, is an inorganic waterproofing and leak-stopping material with good sealing and plasticity. It effectively fills gaps and prevents rainwater seepage. Compared to waterproof coatings, it does not drip and clog vents, and it is more adaptable to complex and changing environments than waterproof membranes. Its alternative is a quick-drying cement-based waterproof slurry, which also possesses similar waterproofing and leak-stopping properties. Waterproof 42 is applied over the geotextile 41 to completely seal the gaps.
[0044] The combination logic of geotextile 41 and waterproof 42 is as follows: first, geotextile 41 is used for preliminary filtration and isolation to provide a smooth base for the application of waterproof 42. Then, waterproof 42 plays its role in waterproofing and sealing. The two work together to ensure the waterproof performance of the joint.
[0045] Preferably, the original exhaust pipe 10 is surrounded by a first insulation layer 13. The first insulation layer 13 can be made of polyurethane foam, which has good thermal insulation and waterproof properties, effectively reducing heat loss from the exhaust pipe and preventing damage to the exhaust pipe due to temperature changes. A common alternative material is polystyrene foam board, which also has good thermal insulation properties. The first insulation layer 13 is tightly wrapped around the original exhaust pipe 10 and fixed by means of adhesive or binding.
[0046] Preferably, the periphery of the flexible hose segment 31 is wrapped with a second insulation layer 14. The second insulation layer 14 can be made of rock wool felt, which is soft and can conform well to the curved shape of the flexible hose segment 31, while also possessing excellent thermal insulation and sound absorption properties. Glass wool felt is an alternative material that can also provide insulation. The second insulation layer 14 is wrapped around the periphery of the flexible hose segment 31 and secured with tape or rope.
[0047] In addition, the ventilated roof structure also includes, from bottom to top, a floor deck 11, a shock-absorbing pad 12, a slope-finding layer 15, a leveling layer 16, a protective layer 18, and an aerial runway layer 19, with the original exhaust pipe 10 located between the shock-absorbing pad 12 and the slope-finding layer 15.
[0048] The floor decking 11 serves to support the weight of the superstructure and is typically made of steel plate, offering high strength and stability. An alternative feature is a reinforced concrete slab, which also provides reliable support. The floor decking 11 is installed on the building's structural frame, laying the foundation for the entire roof structure.
[0049] The damping pads 12 are installed above the floor deck 11, mainly to reduce vibration and noise transmission and improve roof comfort. Common materials for the damping pads 12 include rubber pads or foam plastic pads, both of which have good damping performance. The damping pads 12 are laid evenly on the surface of the floor deck 11.
[0050] The purpose of the slope-finding layer 15 is to create a certain slope on the roof to facilitate drainage. Lightweight materials such as cement perlite or expanded clay concrete are typically used, as these materials provide sufficient strength while reducing the roof's weight. The slope-finding layer 15 is constructed according to design requirements to ensure smooth drainage.
[0051] The leveling layer 16 is placed on top of the slope-forming layer 15 to make the roof surface smooth, providing a good foundation for the subsequent construction of the waterproof layer 17 and protective layer 18. Cement mortar is generally used for leveling, which has good flatness and adhesion. During the construction of the leveling layer 16, it is essential to ensure that the surface is smooth and free of cracks.
[0052] The protective layer 18 is placed above the leveling layer 16 to protect the waterproof layer 17 from damage by external factors and extend its service life. Common materials for the protective layer 18 include fine aggregate concrete or cement mortar, which have certain wear resistance and impact resistance.
[0053] The aerial runway level 19 is located on the top level to meet people's needs for activities in the air. It is generally paved with plastic materials, which have good elasticity and anti-slip properties.
[0054] The original exhaust pipe 10 is located between the shock-absorbing pad 12 and the slope-finding layer 15. On the one hand, it can avoid being squeezed by the upper structure, and on the other hand, it is convenient to make reasonable layout and connection with other structures on the roof.
[0055] In addition, a waterproof layer 17 is installed between the leveling layer 16 and the protective layer 18. The waterproof layer 17 is generally made of waterproof coating or waterproof membrane, which effectively prevents rainwater from penetrating into the roof structure, protecting the building's safety and durability. Alternative waterproof materials include polymer waterproof membranes, which offer better flexibility and water resistance. During construction, the waterproof layer 17 must be applied evenly, without any missed areas or hollow spots.
[0056] In a preferred embodiment, the leveling layer 16 and the waterproof layer 17 extend upwards to cover the vertical side of the original exhaust pipe 10 and the vertical and top sides of the flexible hose section 31, which can further enhance the waterproof effect and prevent rainwater from seeping in from the connection between the exhaust pipe and the roof structure.
[0057] In addition, a decorative element 50 is provided around the parapet wall 20 and on the outer side of the leveling layer 16 and the waterproof layer 17. The decorative element 50 can be made of a combination of steel keel and cement fiberboard, stone, ceramic tiles, or other materials, serving to beautify the building's appearance. At the same time, it also provides a certain degree of protection for the parapet wall 20 and the waterproof layer 17.
[0058] The implementation principle of this embodiment is as follows: by combining the rigid pipe section 30 and the flexible pipe section 31, the height of the exhaust pipe is effectively increased, avoiding the risk of rainwater backflow. The rigidity of the rigid pipe section 30 ensures the stability of the installation, while the flexibility of the flexible pipe section 31 adapts to complex site conditions. The installation of the waterproof and leak-stopping structure 40, along with the reasonable layout and waterproofing treatment of each layer of the structure, ensures the waterproof performance and overall stability of the roof. Compared with existing technologies, this solution can better adapt to problems caused by engineering design changes, improve the safety and reliability of the roof, reduce later maintenance costs, and makes a significant improvement and contribution to existing technologies.
[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A ventilated roof structure, characterized in that, Includes an original exhaust pipe (10) and a parapet wall (20). The exhaust pipe (10) extends to the vertical side of the parapet wall (20). A connected rigid pipe section (30) and a flexible pipe section (31) are inserted into the original exhaust pipe (10). The exhaust pipe section (31) extends out of the original exhaust pipe (10) and surrounds the top side of the parapet wall (20) to extend to the outside of the parapet wall (20). The exhaust pipe section (31) is set downward. A waterproof and leak-proof structure (40) is provided between the exhaust port of the original exhaust pipe (10) and the flexible pipe section (31).
2. The ventilated roof structure according to claim 1, characterized in that: The waterproof and leak-stopping structure (40) includes geotextile (41) and water-tight sealant (42), with the geotextile (41) placed in the lower layer and the water-tight sealant (42) placed in the upper layer.
3. The ventilated roof structure according to claim 1, characterized in that: The original exhaust pipe (10) is surrounded by a first insulation layer (13).
4. The ventilated roof structure according to claim 1, characterized in that: The periphery of the hose segment (31) is wrapped with a second insulation layer (14).
5. The ventilated roof structure according to claim 1, characterized in that: The exhaust roof structure also includes, from bottom to top, a floor deck (11), a shock-absorbing pad (12), a slope-finding layer (15), a leveling layer (16), a protective layer (18), and an aerial runway layer (19), with the original exhaust pipe (10) located between the shock-absorbing pad (12) and the slope-finding layer (15).
6. The ventilated roof structure according to claim 5, characterized in that: A waterproof layer (17) is provided between the leveling layer (16) and the protective layer (18).
7. A ventilated roof structure according to claim 6, characterized in that: The leveling layer (16) and waterproof layer (17) extend upwards to cover the vertical side of the original exhaust pipe (10) and the vertical side and top side of the hose section (31).
8. A ventilated roof structure according to claim 7, characterized in that: A decorative element (50) is provided on the periphery of the parapet wall (20) and on the outside of the leveling layer (16) and the waterproof layer (17).
9. A ventilated roof structure according to claim 1, characterized in that: The diameter of the rigid pipe section (30) and the flexible pipe section (31) is 1 / 3 to 2 / 3 of the diameter of the original exhaust pipe (10).
10. A ventilated roof structure according to claim 1, characterized in that: The rigid pipe section (30) is a PVC pipe.