An external wall ventilation structure
By incorporating upper and lower baffles and rain shields into the external wall ventilation structure, the problem of interrupted indoor and outdoor air exchange on rainy days is solved, achieving effective ventilation during rainy weather.
Patent Information
- Application Number
- CN202522112345.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-30
AI Technical Summary
The existing external wall ventilation structure requires windows or louvers to be closed on rainy days to prevent rainwater from entering, which stops the exchange of indoor and outdoor air and affects the ventilation effect.
Design an external wall ventilation structure including an upper guide plate, a lower guide plate, a rain shield, and an air guide plate. Through the inclined setting of the guide plate and the air guide plate, an all-round rainwater isolation and air circulation channel is formed to ensure that indoor and outdoor air exchange can still be achieved on rainy days.
It effectively isolates rainwater on rainy days while maintaining indoor and outdoor air exchange, improving ventilation and air circulation efficiency.
Smart Images

Figure CN224679401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation equipment technology, and more specifically, to an external wall ventilation structure. Background Technology
[0002] External wall ventilation structures are an indispensable component of modern buildings, their primary function being to facilitate air exchange between indoor and outdoor environments. Effective natural ventilation regulates indoor temperature and humidity, removes stale air, and introduces fresh air, thereby significantly improving indoor air quality and the comfort of the living environment, while also reducing building energy consumption under suitable conditions. Therefore, designing an efficient, reliable external wall ventilation structure that can adapt to different climatic conditions is of great significance for improving building quality.
[0003] In practical construction, the most common exterior wall ventilation structure involves pre-drilling openings in the exterior wall and installing movable windows or louvers in these openings. Its working principle and usage are very straightforward: when the weather is suitable and ventilation is needed, the user manually or automatically opens the louvers, creating a direct channel connecting the interior and exterior, allowing air to circulate freely through pressure difference or wind pressure; when ventilation is not needed or the external environment is unsuitable, the louvers are closed to provide shelter from wind and rain, insulation, and safety protection.
[0004] However, this very reliance on a "fully open" or "fully closed" operating mode exposes its inherent flaws under specific weather conditions. On rainy days, to prevent rainwater from entering the room through open channels, users must close windows or blinds. This necessary action directly blocks the ventilation channels, forcing the cessation of indoor and outdoor air exchange. Therefore, on rainy days when ventilation is most needed to regulate indoor humidity, the existing external wall ventilation structure loses its core function and fails to solve the problems of stuffy indoor air and increased humidity.
[0005] Therefore, a new solution is needed to address this problem. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an external wall ventilation structure that solves the problem that when it rains, users need to close windows or louvers, which forces the exchange of indoor and outdoor air to stop and affects the ventilation effect of the structure.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an external wall ventilation structure, including a wall with windows, and further comprising: An upper deflector plate is fixedly connected to the side wall of the wall and located above the window. The upper deflector plate is inclined downward to guide and disperse rainwater falling from above. The lower deflector is fixedly connected to the side wall of the wall and located below the window. The lower deflector is inclined upward to block rainwater that bounces back from below or is blown by the wind. Several rain shields are arranged between the upper and lower guide plates and are inclined downwards. There is a gap between two adjacent rain shields to allow air circulation. Two fixed plates are fixedly connected to the side wall of the wall, and the rain shields are located between the two fixed plates.
[0008] The present invention is further configured such that the bottom position of the upper rain shield is lower than the top position of the lower rain shield.
[0009] The present invention is further configured such that: a wind guide plate is fixedly connected to the bottom of the rain shield, and the wind guide plate is inclined in the opposite direction to the rain shield, so as to form a channel that is wider at the outside and narrower at the inside between the wind guide plate and the rain shield below, thereby accelerating the air circulation speed.
[0010] The present invention is further configured such that a plurality of guide strips are fixedly connected to the rain shield.
[0011] The present invention is further configured such that the upper guide plate is bent downward on the side away from the wall.
[0012] The present invention is further configured such that the top cross-section of the lower guide plate is arc-shaped.
[0013] The present invention is further configured such that an insect-proof net is installed between the two fixing plates.
[0014] In summary, this utility model has the following beneficial effects: by setting up the upper guide plate, the lower guide plate, and the rainproof plate, it can achieve the effect of all-round isolation of rainwater. Furthermore, by setting the spacing, it can allow outside air to enter the room through the spacing, so that the ventilation structure can still exchange indoor and outdoor air on rainy days, thereby improving the ventilation effect of the structure. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 A cross-sectional view of this utility model Figure 1 ; Figure 3 A cross-sectional view of this utility model Figure 2 ; Figure 4 This is a schematic diagram of the structure of this utility model.
[0016] In the picture: 1. Window; 2. Wall; 3. Upper deflector; 4. Lower deflector; 5. Rain shield; 6. Fixing plate; 7. Air guide plate; 8. Deflector strip; 9. Insect net. Detailed Implementation
[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.
[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] An external wall ventilation structure, such as Figures 1-4 As shown, the wall 2, including window 1, also includes: The upper guide plate 3 is fixedly connected to the side wall of the wall 2 and located above the window 1. The upper guide plate 3 is inclined downward to guide and disperse the rainwater falling from above. The side of the upper guide plate 3 away from the wall 2 is bent downward to effectively prevent rainwater from flowing along the bottom of the upper guide plate 3 towards the rain shield 5.
[0021] The lower deflector plate 4 is fixedly connected to the side wall of the wall 2 and located below the window 1. The lower deflector plate 4 is inclined upward to block rainwater that bounces back from below or is blown by the wind. The top cross-section of the lower deflector plate 4 is arc-shaped, which allows the rainwater on the lower deflector plate 4 to flow outward along the arc-shaped surface, preventing rainwater from accumulating on the lower deflector plate 4.
[0022] Several rain shields 5 are set between the upper guide plate 3 and the lower guide plate 4 and are inclined downwards. There is a gap between two adjacent rain shields 5 to allow air circulation. Two fixing plates 6 are fixedly connected to the side wall of the wall 2. The rain shields 5 are located between the two fixing plates 6 to fix the rain shields 5. The bottom of the upper rain shield 5 is lower than the top of the lower rain shield 5, which can prevent rainwater from moving towards the window 1 through the gap between two adjacent rain shields 5. Several guide strips 8 are fixedly connected to the rain shields 5, which can facilitate the outward flow of rainwater when it falls on the rain shields 5 and improve the drainage effect of the rain shields 5.
[0023] Furthermore, a wind guide plate 7 is fixedly connected to the bottom of the rain shield 5. The rain shield 5 and the wind guide plate 7 are integrally formed. The wind guide plate 7 is inclined in the opposite direction to the rain shield 5 to form a channel that is wider at the outside and narrower at the inside between the wind guide plate 7 and the rain shield 5 below, thereby accelerating the air circulation speed. When air enters between the wind guide plate 7 and the rain shield 5, the formation of the channel between the wind guide plate 7 and the rain shield 5 below creates a narrow tube effect. When the air passes through the channel, the wind speed increases, thereby improving the efficiency of indoor and outdoor air circulation and improving the ventilation effect.
[0024] An insect-proof net 9 is installed between the two fixed plates 6 to prevent flying insects from entering the room through the gap between the two adjacent rainproof plates 5.
[0025] The working principle of this utility model is as follows: When installing the ventilation structure on the exterior wall, install window 1 on the exterior wall, then fix two fixing plates 6 on the exterior wall, then install insect net 9 and rain shield 5 between the two fixing plates 6, and finally fix the upper guide plate 3 and lower guide plate 4 to the side wall of the exterior wall respectively, thus completing the installation of the ventilation structure on the exterior wall.
[0026] When it rains, the upper deflector 3 can guide and disperse the rainwater falling from above, while the lower deflector 4 can block rainwater that bounces back from below or is blown by the wind. The rain shield 5 can also prevent rainwater that is blown at an angle by the wind, achieving a comprehensive rainwater isolation effect. Furthermore, the spacing allows outside air to enter the room through the gaps, ensuring that the ventilation structure can still exchange indoor and outdoor air even on rainy days, thus improving the ventilation effect of the structure.
[0027] Meanwhile, as air enters the room, it passes between the air guide plate 7 and the rain shield 5. Because the air guide plate 7 and the rain shield 5 below form a channel that is wider on the outside and narrower on the inside, the air forms a septum effect. When the air passes through the channel, the wind speed increases, thereby improving the efficiency of indoor and outdoor air circulation and improving the ventilation effect.
[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An external wall ventilation structure, comprising a wall (2) with windows (1), characterized in that: Also includes: The upper guide plate (3) is fixedly connected to the side wall of the wall (2) and located above the window (1). The upper guide plate (3) is inclined downward to guide and disperse the rainwater falling from above. The lower guide plate (4) is fixedly connected to the side wall of the wall (2) and located below the window (1). The lower guide plate (4) is inclined upward to block rainwater that bounces back from below or is blown by the wind. Several rain shields (5) are arranged between the upper guide plate (3) and the lower guide plate (4) and are inclined downward. There is a gap between two adjacent rain shields (5) for air circulation. Two fixed plates (6) are fixedly connected to the side wall of the wall (2), and the rain shields (5) are located between the two fixed plates (6).
2. The external wall ventilation structure according to claim 1, characterized in that: The bottom of the upper rain shield (5) is lower than the top of the lower rain shield (5).
3. The external wall ventilation structure according to claim 1, characterized in that: The bottom of the rain shield (5) is fixedly connected to a wind guide plate (7). The wind guide plate (7) is inclined in the opposite direction to the rain shield (5) so that a channel with a wider outer side and a narrower inner side is formed between the wind guide plate (7) and the rain shield (5) below, thereby accelerating the air circulation speed.
4. The external wall ventilation structure according to claim 1, characterized in that: Several guide strips (8) are fixedly connected to the rain shield (5).
5. An external wall ventilation structure according to claim 1, characterized in that: The upper guide plate (3) is bent downward on the side away from the wall (2).
6. The external wall ventilation structure according to claim 1, characterized in that: The top cross-section of the lower guide plate (4) is arc-shaped.
7. An external wall ventilation structure according to claim 1, characterized in that: An insect-proof net (9) is installed between the two fixing plates (6).