An exhaust structure for adjusting humidity of a roof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI HONGXIA CONSTR ENG NO 3 CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-08-07
AI Technical Summary
[0002]屋面为界面层次结构,一般包括由上至下设置的保护层、保温层、防水层和结构层,这种结构容易在各层结构间形成水汽,若不能使水汽及时有效地排出,容易导致潮气密闭在防水层下,一旦气温较高,尤其在炎热的夏季,潮气蒸发,体积膨胀,防水层就会出现鼓包现象,引起防水层的开裂、破损,造成屋面渗漏水,长期积累将导致保温和防水效果降低甚至丧失
[0013] The beneficial effects of this utility model are as follows: 1) By using the exhaust structure described in this utility model, the air supply volume can be increased by adjusting the ventilation butterfly valve when the roof humidity is high, thereby reducing the roof humidity. When the roof humidity is low, the air supply volume can be reduced by adjusting the ventilation butterfly valve, thereby maintaining the roof humidity. This helps to keep the roof humidity within a reasonable range as much as possible, thus reducing the adverse effects of excessively high or low roof humidity on the structure and function of the building; 2) The exhaust structure described in this utility model is simple to construct and has a low cost. It can effectively reduce the service life of the exhaust pipe, reduce the blistering of the waterproof membrane, and inhibit problems such as membrane cracking and roof seepage.
Smart Images

Figure CN224605892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roof ventilation technology, specifically a ventilation structure that can adjust the humidity of a roof. Background Technology
[0002] Roofs have a layered structure, typically consisting of a protective layer, an insulation layer, a waterproof layer, and a structural layer, arranged from top to bottom. This structure makes it easy for moisture to form between the layers. If the moisture cannot be effectively and promptly expelled, it can trap moisture under the waterproof layer. When the temperature is high, especially in the hot summer, the moisture evaporates and expands, causing the waterproof layer to bulge, crack, and break, leading to roof leaks. Over time, this accumulation will reduce or even eliminate the insulation and waterproofing effects.
[0003] The commonly used method is to install an exhaust pipe inside the roof insulation layer, with one end leading to the outside of the roof. This allows excess moisture in the roof to be discharged into the atmosphere, effectively reducing blistering of the waterproof membrane and inhibiting membrane cracking and roof leakage. However, this method cannot control roof humidity. Both excessively high and low roof humidity can adversely affect the structure and function of the building. The reasonable humidity range for a roof should be 40% to 60%. Therefore, how to regulate and control roof humidity is a problem that the construction industry urgently needs to solve. Summary of the Invention
[0004] The purpose of this utility model is to provide a structure that can regulate and control the humidity of the roof, namely, an exhaust structure that can regulate the humidity of the roof.
[0005] This utility model is achieved using the following technical solution:
[0006] An adjustable roof humidity exhaust structure includes a smoke duct installed on the roof and multiple L-shaped exhaust pipes. The top end of the smoke duct is equipped with a non-powered vent cap. Each L-shaped exhaust pipe includes a horizontal exhaust section, an elbow connection section, and a vertical vent section arranged in sequence. The horizontal exhaust section is located within the roof insulation layer. The elbow connection section is located at the concrete curb between the roof and the smoke duct. The vertical vent section extends into the smoke duct and is lower than the outlet of the smoke duct. Each horizontal exhaust section is provided with several ventilation holes. Each vertical vent section is equipped with a ventilation butterfly valve at its top end.
[0007] Working principle: The non-powered ventilator is a ventilation device that drives the worm gear to rotate through natural wind speed and temperature difference. It can achieve ventilation without the need for electricity. When in use, the operator judges the roof humidity based on experience and then adjusts the ventilation butterfly valve to control the ventilation volume in the L-shaped exhaust pipe corresponding to the ventilation butterfly valve. This keeps the roof humidity within a reasonable range, thereby achieving the effect of controlling roof humidity and reducing the adverse effects of excessively high or low roof humidity on the structure and function of the building.
[0008] Furthermore, a temperature and humidity sensor is placed in at least one vent hole to facilitate humidity detection on the roof later, so as to better control the ventilation volume in the corresponding L-shaped exhaust pipe through the ventilation butterfly valve.
[0009] Furthermore, the horizontal exhaust section of each L-shaped exhaust pipe is directly cast at the corresponding position of the roof insulation layer, the elbow connection of each L-shaped exhaust pipe is directly cast at the corresponding position of the roof and the concrete curb of the flue, and the vertical ventilation section of each L-shaped exhaust pipe is fixed to the corresponding position of the inner wall of the flue by two clamp-type pipe clamps, making the structure specific and standardized.
[0010] Furthermore, each L-shaped exhaust pipe is a U-PVC pipe with a diameter of 50mm, and the diameter of the vent hole on each horizontal exhaust section is 10mm, with a hole spacing of 50mm between two adjacent vent holes.
[0011] Furthermore, each L-shaped exhaust pipe has multiple temperature and humidity sensors, and the distance between two adjacent temperature and humidity sensors is 4m.
[0012] In practice, the smoke duct is located in the middle of the roof. The cross-section of the smoke duct is square and L-shaped exhaust pipes are provided around the smoke duct, which is equivalent to four L-shaped exhaust pipes. The structure is specific and standardized.
[0013] The beneficial effects of this utility model are as follows: 1) By using the exhaust structure described in this utility model, the air supply volume can be increased by adjusting the ventilation butterfly valve when the roof humidity is high, thereby reducing the roof humidity. When the roof humidity is low, the air supply volume can be reduced by adjusting the ventilation butterfly valve, thereby maintaining the roof humidity. This helps to keep the roof humidity within a reasonable range as much as possible, thus reducing the adverse effects of excessively high or low roof humidity on the structure and function of the building; 2) The exhaust structure described in this utility model is simple to construct and has a low cost. It can effectively reduce the service life of the exhaust pipe, reduce the blistering of the waterproof membrane, and inhibit problems such as membrane cracking and roof seepage. Attached Figure Description
[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1This is a schematic diagram of the adjustable roof humidity exhaust structure described in this utility model;
[0017] Figure 2 This is a schematic diagram of the horizontal exhaust section.
[0018] In the diagram: 1-smoke duct, 2-roof, 3-L-shaped exhaust pipe, 31-horizontal exhaust section, 32-elbow connection, 33-vertical ventilation section, 4-ventilation hole, 5-ventilation butterfly valve, 6-temperature and humidity sensor, 7-pipe clamp, 8-non-powered vent cap. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.
[0020] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.
[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0023] like Figure 1 As shown, an adjustable roof humidity exhaust structure includes a smoke duct 1 installed on the roof 2 and multiple L-shaped exhaust pipes 3. The top end of the smoke duct 1 is equipped with a non-powered vent cap 8. Each L-shaped exhaust pipe 3 includes a horizontal exhaust section 31, an elbow connection section 32 and a vertical vent section 33 arranged in sequence. The horizontal exhaust section 31 is arranged inside the insulation layer of the roof 2. The elbow connection section 32 is arranged at the concrete curb between the roof 2 and the smoke duct 1. The vertical vent section 33 extends into the smoke duct 1 and is lower than the outlet of the smoke duct 1. Each horizontal exhaust section 31 is provided with several vent holes 4. Each vertical vent section 33 is equipped with a ventilation butterfly valve 5 at its top end.
[0024] Working principle: The non-powered ventilator 8 is a ventilation device that drives the worm gear to rotate through natural wind speed and temperature difference. It can achieve ventilation without the need for electricity. When in use, the operator judges the humidity of the roof 2 based on experience and then adjusts the ventilation butterfly valve 5 to control the ventilation volume in the L-shaped exhaust pipe 3 corresponding to the ventilation butterfly valve 5. This keeps the humidity of the roof 2 within a reasonable range, thereby achieving the effect of controlling the humidity of the roof 2 and reducing the adverse effects of excessively high or low humidity on the structure and function of the building.
[0025] In practice, a temperature and humidity sensor 6 is placed in at least one ventilation hole 4 to facilitate humidity detection of the roof 2 later, so as to better control the ventilation volume in the corresponding L-shaped exhaust pipe 3 through the ventilation butterfly valve 5.
[0026] In practice, the horizontal exhaust section 31 of each L-shaped exhaust pipe 3 is directly cast at the corresponding position of the roof 2 insulation layer, the elbow connection section 32 of each L-shaped exhaust pipe 3 is directly cast at the corresponding position of the concrete curb between the roof 2 and the flue duct 1, and the vertical ventilation section 33 of each L-shaped exhaust pipe 3 is fixed to the corresponding position of the inner wall of the flue duct 1 by two clamp-type pipe clamps 7, thus making the structure specific and standardized.
[0027] In specific implementation, such as Figure 2 As shown, each L-shaped exhaust pipe 3 is a U-PVC pipe with a diameter of 50mm, and the vent hole 4 on each horizontal exhaust section 31 has a diameter of 10mm and the distance between two adjacent vent holes 4 is 50mm.
[0028] In practice, each L-shaped exhaust pipe 3 has multiple temperature and humidity sensors 6, and the distance between two adjacent temperature and humidity sensors 6 is 4m.
[0029] In this specific embodiment, the smoke duct 1 is located in the middle of the roof 2. The cross-section of the smoke duct 1 is square and L-shaped exhaust pipes 3 are provided around the smoke duct 1, which is equivalent to four L-shaped exhaust pipes 3, making the structure specific and standardized.
[0030] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.
Claims
1. A ventilation structure for adjusting roof humidity, characterized in that, The system includes a flue (1) installed on the roof (2) and multiple L-shaped exhaust pipes (3). The top end of the flue (1) is equipped with a non-powered wind cap (8). Each L-shaped exhaust pipe (3) includes a horizontal exhaust section (31), an elbow connection section (32), and a vertical ventilation section (33) arranged in sequence. The horizontal exhaust section (31) is located inside the insulation layer of the roof (2). The elbow connection section (32) is located at the concrete curb between the roof (2) and the flue (1). The vertical ventilation section (33) extends into the flue (1) and is lower than the outlet of the flue (1). Each horizontal exhaust section (31) is provided with several ventilation holes (4). Each vertical ventilation section (33) is equipped with a ventilation butterfly valve (5) at its top end.
2. The ventilation structure for adjusting roof humidity according to claim 1, characterized in that, A temperature and humidity sensor (6) is arranged in at least one vent (4).
3. The ventilation structure for adjusting roof humidity according to claim 2, characterized in that, The horizontal exhaust section (31) of each L-shaped exhaust pipe (3) is directly cast at the corresponding position of the roof (2) moisture-retaining layer. The elbow connection (32) of each L-shaped exhaust pipe (3) is directly cast at the corresponding position of the concrete sill between the roof (2) and the flue (1). The vertical ventilation section (33) of each L-shaped exhaust pipe (3) is fixed to the corresponding position of the inner wall of the flue (1) by two clamp-type pipe clamps (7).
4. The ventilation structure for adjusting roof humidity according to claim 3, characterized in that, Each L-shaped exhaust pipe (3) is a U-PVC pipe with a diameter of 50 mm. The diameter of the vent hole (4) on each horizontal exhaust section (31) is 10 mm and the distance between two adjacent vent holes (4) is 50 mm.
5. The ventilation structure for adjusting roof humidity according to claim 4, characterized in that, Each L-shaped exhaust pipe (3) has multiple temperature and humidity sensors (6), and the distance between two adjacent temperature and humidity sensors (6) is 4m.
6. The ventilation structure for adjusting roof humidity according to claim 5, characterized in that, The smoke duct (1) is located in the middle of the roof (2). The cross-section of the smoke duct (1) is square and L-shaped exhaust pipes (3) are provided around the smoke duct (1).