Rainproof shutter assembly and open ventilation pavilion adopting same

Abstract

The rainproof shutter assembly comprises a shutter frame and a plurality of obliquely-arranged shutters in the shutter frame, each shutter comprises a first guide plate and a second guide plate bent upwards from the bottom of the first guide plate, and a drainage ditch used for draining rainwater is formed between the second guide plate and the first guide plate; a drainage net is arranged between every two adjacent shutters, the horizontal projection of the first guide plate of one shutter covers the horizontal projection of the second guide plate of the adjacent shutter on the inclined side, the shutters comprise an open state and a closed state, a ventilation path of the shutter frame is formed between the shutters in the open state, and the shutters rotate in the closed state. Wherein the first guide plate of one shutter is attached to the second guide plate of the adjacent shutter on the inclined side, and the ventilation path of the shutter frame is closed. By designing the shutter structure with the drainage ditch, the drainage net and the balance weight piece, rainwater can be prevented from entering underground space while effective ventilation is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building ventilation and drainage, and in particular to a rainproof louver assembly and an open wind pavilion using the rainproof louver assembly. Background Art

[0002] In underground engineering design, open low-wind pavilions are usually the preferred ventilation design solution. They are relatively low in height, usually designed to be 1 to 1.2 meters above the ground. This type of design can be well integrated with the surrounding landscape and has little impact on the urban environment, so it is widely used. However, open low-wind pavilions have significant defects in rain protection performance, especially on rainy days, when rainwater can easily enter the underground space directly, bringing the risk of water accumulation to underground facilities. To solve this problem, existing engineering designs usually require the installation of sump wells, drainage pumps and related drainage systems in the underground space to drain rainwater entering the underground space. The addition of these facilities not only significantly increases the project cost, but also increases the cost of subsequent maintenance and operation.

[0003] In existing designs, shutters are also used to ensure ventilation and provide a certain rain protection function, but such designs often lack precision and the rain protection effect is not ideal. Some rain protection designs in the existing technology also use the upper and lower shutters to close or open the vents to achieve the purpose of adjusting ventilation and rain protection under different weather conditions. However, such structures are usually more complicated, have high requirements for mechanical movement adjustment, are not convenient to operate, and are prone to failure in actual applications. Most of these existing designs lack flexibility and stability, cannot provide effective rain protection under different working conditions, and cannot meet the actual needs of underground projects. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a rainproof louver assembly and an open wind pavilion using the rainproof louver assembly. By designing a louver structure with a drainage ditch, a drainage net and a counterweight, it is possible to prevent rainwater from entering the underground space while ensuring effective ventilation, thereby reducing the project cost and subsequent operation and maintenance costs. The rainproof louver assembly has the advantages of simple structure, easy operation and strong adaptability. It can flexibly respond to the ventilation and rain protection needs of different working conditions, and provides a more reliable and efficient solution.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A rainproof louver assembly, comprising a louver frame and a plurality of louvers arranged obliquely in the louver frame, the louvers comprising a first guide plate and a second guide plate bent upward from the bottom of the first guide plate, a drainage ditch for rainwater discharge being formed between the second guide plate and the first guide plate, a drainage net being arranged between adjacent louvers, one end of the drainage net being fixed to the top end of the first guide plate of one of the louvers, and the other end being connected to a counterweight member contacting with the middle part of the first guide plate of the adjacent louver on the inclined side, the horizontal projection of the first guide plate of one of the louvers covering the horizontal projection of the second guide plate of the adjacent louver on the inclined side; the louvers comprising an open state and a closed state, in the open state, the horizontal plane where the contact position of the counterweight member and the first guide plate is located is the highest water level line of the drainage ditch, a ventilation path of the louver frame is formed between the louvers, in the closed state, the louvers rotate, the first guide plate of one of the louvers is fitted with the second guide plate of the adjacent louver on the inclined side, and the ventilation path of the louver frame is closed.

[0007] Preferably, the height of the second guide plate in the vertical direction is 1 / 3-2 / 3 of that of the first guide plate.

[0008] Preferably, the drainage net is made of a flexible fabric with 30% open holes.

[0009] Preferably, a leaking plate is arranged between the top end of the second guide plate and the top end of the first guide plate, and a plurality of leaking holes are arranged on the leaking plate, and rainwater flows into the drainage ditch through the leaking holes.

[0010] Preferably, the first guide plate comprises a bent portion on the upper side, and in the closed state, the top end of the second guide plate of the adjacent louver on the inclined side abuts against the bent portion.

[0011] Preferably, the plurality of louvers are connected by connecting rods to achieve synchronous rotation, and the rotation axis of the louvers is located in the middle or at the bottom.

[0012] Preferably, the upper side of the louver frame is an open structure, the lower side is connected to the air inlet of the air shaft, the front side extends out of the horizontal projection plane of the air shaft and is provided with a drainage opening, and the left side, right side and rear side are all provided with closing panels.

[0013] Preferably, the louvers extend obliquely downward from the rear side of the louver frame to the drainage opening at the front side, with a slope of 2%-3%.

[0014] Preferably, the drainage opening is rotatably connected to a baffle, and when the shutter is in an open state, the baffle is stored at the bottom of the shutter frame, and when the shutter is in a closed state, the shutter rotates, and the baffle synchronously rotates to a position to close the drainage opening.

[0015] On the other hand, the present invention further discloses an open wind pavilion, which includes an air shaft and the above-mentioned rainproof shutter assembly arranged above the air shaft, and the horizontal projection of the multiple shutters in the shutter frame can completely cover the air inlet of the air shaft.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) A drainage ditch structure is designed on the louvers, which can effectively collect and guide rainwater, prevent rainwater from entering the ventilation path, and then discharge it to the designated drainage openings. This not only enhances the rainproof ability of the wind pavilion, but also reduces the risk of rainwater entering the underground space, reduces the water accumulation burden of underground facilities, and reduces the pressure and maintenance cost of the subsequent drainage system.

[0018] (2) The drainage nets installed between adjacent louvers can not only guide rainwater to flow smoothly into the gutter, but also effectively prevent pollutants carried in the air from entering the gutter and ventilation path to avoid blockage. This ensures the cleanliness of the ventilation system and improves the operating efficiency and service life of the overall system.

[0019] (3) The louver frame structure is reasonably designed and can be directly installed on the upper part of the civil engineering base of the open wind pavilion vent without any damage or modification to the existing civil engineering structure. This simplifies the installation process, reduces project time and cost, and improves the safety and reliability of the entire system. It is especially suitable for various engineering renovations and new construction projects.

[0020] (4) The shutters can be rotated to effectively seal the air inlet of the wind shaft. Combined with the use of sealing plates and baffles on all sides, they can ensure the comprehensive sealing of the open wind pavilion under extreme weather or environmental conditions, preventing adverse external factors from affecting the underground space, ensuring the flexibility and reliability of the system in dealing with complex working conditions, and further improving the protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a top view of a rainproof shutter assembly according to an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional schematic diagram of a rainproof shutter assembly according to an embodiment of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of a rainproof shutter assembly according to an embodiment of the present invention;

[0024] Figure 4 is a cross-sectional schematic diagram of a rainproof shutter assembly according to another embodiment of the present invention;

[0025] Figure 5 is a schematic cross-sectional view of the shutter in the open and closed states with the rotation axis located in the middle;

[0026] Figure 6 is a schematic cross-sectional view of the shutter in the open and closed states with the rotation axis at the bottom;

[0027] Figure 7 is a cross-sectional schematic diagram of a closed state of a rainproof shutter assembly according to an embodiment of the present invention;

[0028] Figure 8 is an overall schematic diagram of a rainproof louver assembly according to an embodiment of the present invention when the drainage opening is opened;

[0029] Fig. 9 is an overall schematic diagram of a rainproof louver assembly according to an embodiment of the present invention when the drainage opening is closed;

[0030] Fig.10 is an overall schematic diagram of a rainproof louver assembly of another embodiment of the present invention when the drainage opening is opened;

[0031] Fig.11 It is an overall schematic diagram of a rainproof louver assembly of another embodiment of the present invention when the drainage opening is closed.

[0032] Figure markings: 1-louver frame; 2-louver; 3-first guide plate; 4-second guide plate; 5-drainage ditch; 6-drainage net; 7-counterweight; 8-leakage plate; 9-leakage hole; 10-bending part; 11-air shaft; 12-air inlet; 13-drainage opening; 14-closing plate; 15-baffle; 16-rain shield; 17-connecting plate. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the present invention.

[0034] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0035] See also Figure 1-11The present embodiment provides a rainproof shutter assembly, including a shutter frame 1 and a plurality of obliquely arranged shutters 2 in the shutter frame 1. The oblique arrangement of the shutters 2 can effectively guide the flow of rainwater while ensuring a good ventilation effect, and prevent rainwater from directly entering the ventilation path. The shutter 2 includes a first guide plate 3 and a second guide plate 4 bent upward from the bottom of the first guide plate 3. The bending design of the second guide plate 4 forms a drainage ditch 5 for rainwater discharge between the first guide plate 3 and the second guide plate 4, so that rainwater can be discharged smoothly and avoid the generation of water accumulation.

[0036] A drainage net 6 is provided between adjacent louvers 2. One end of the drainage net 6 is fixed to the top of the first guide plate 3 of one of the louvers 2, and the other end is connected to a counterweight 7. The drainage net 6 can not only guide rainwater to flow into the gutter 5, but also effectively prevent pollutants carried in the air from entering the gutter and the ventilation path. The counterweight 7 is in contact with the middle part of the first guide plate 3 of the adjacent louver 2 on the inclined side. The counterweight 7 has a certain weight and can pull the drainage net 6 to keep it in an open state at all times, making it difficult to shrink or curl, thereby ensuring that the drainage net 6 effectively guides rainwater and blocks pollutants between adjacent louvers 2. The horizontal projection of the first guide plate 3 of one of the louvers 2 covers the horizontal projection of the second guide plate 4 of the adjacent louver 2 on the inclined side, effectively preventing rainwater from directly passing through between adjacent louvers 2 in a vertical direction or a nearly vertical direction, further enhancing the rainproof effect, and ensuring that rainwater is guided to the gutter 5 for discharge instead of entering the ventilation path.

[0037] The louver 2 includes an open state and a closed state. In the open state, the horizontal plane where the counterweight 7 contacts the first guide plate 3 is the highest water level of the gutter 5. The drainage net 6 is located above the gutter 5, which facilitates the smooth installation of the drainage net 6 and avoids the influence of the drainage process on the drainage net 6. At the same time, it also ensures that the gutter 5 has sufficient capacity and has a better effect of collecting and guiding rainwater. A ventilation path of the louver frame 1 is formed between the louvers 2. In this state, air can flow freely and maintain good ventilation performance. In the closed state, the louver 2 rotates, and the first guide plate 3 of one louver 2 fits with the second guide plate 4 of the adjacent louver 2 on the inclined side. Such a fitting design can close the ventilation path of the louver frame 1 in windy and rainy weather or other extreme conditions, thereby preventing rainwater or foreign objects from entering and ensuring the safety and stability of the system.

[0038] Furthermore, the height of the second guide plate in the vertical direction is 1 / 3-2 / 3 of the height of the first guide plate. This height design can ensure that the second guide plate 4 provides sufficient drainage capacity while maintaining the stability and strength of the structure, avoiding the effect of the drainage ditch 5 being affected by being too high or too low. This height ratio can also optimize the overall ventilation performance and rainproof performance of the louver 2. In addition, the drainage net adopts a flexible fabric with 30% openings. This opening rate can effectively prevent rainwater and large particles of pollutants from entering the drainage system while ensuring normal air circulation. At the same time, the use of flexible fabrics enhances the adaptability of the drainage net 6, which can be flexibly unfolded or retracted as external conditions change, further improving the drainage effect.

[0039] See also Figure 3 In one of the embodiments, the louver 2 is designed to be in the shape of a raindrop, and a leaking plate 8 is arranged between the top of the second guide plate 4 and the top of the first guide plate 3. A plurality of leaking holes 9 are arranged on the leaking plate 8. Rainwater can flow smoothly into the drainage ditch 5 through the leaking holes 9. The added leaking plate 8 has a dustproof effect, which prevents dust or other fine particles from entering the drainage ditch 5, thereby maintaining the cleanliness and patency of the system. The overall louver 2 is designed in the shape of a raindrop, which can better guide the air flow, reduce air resistance, and thus improve the ventilation effect. In this case, the drainage net 6 and the counterweight 7 can pass through the leaking hole 9, and the leaking hole 9 not only serves to discharge rainwater, but also can fix and limit the swing of the drainage net 6, thereby ensuring that the drainage net 6 is always in the best working state, further enhancing the drainage and protection functions.

[0040] See also Figure 4 In another embodiment, the first guide plate 3 includes a bending portion 10 on the upper side, which can guide rainwater. When in the closed state, the top of the second guide plate 4 of the adjacent louver 2 on the inclined side abuts against the bending portion 10. This structure ensures the sealing when the louver 2 is closed, effectively preventing rainwater from entering the ventilation path through the louver frame 1, further improving the rainproof performance, especially under extreme weather conditions, and can ensure the stability and reliability of the system.

[0041] See also Figure 5-6 , multiple shutters 2 are connected by connecting rods to form a linkage structure to achieve synchronous rotation. This design ensures that all shutters 2 can move simultaneously when opened or closed, thereby ensuring the consistency of the overall rainproof and ventilation effects. The rotation axis of the shutter 2 is located in the middle or bottom. This layout can provide more stable rotation support and avoid offset or unevenness during operation.

[0042] See also Figure 7-11The upper side of the louver frame 1 is an open structure to facilitate the free circulation of air, while the lower side is connected to the air inlet 12 of the air shaft to ensure the smooth connection between the air shaft 11 and the outside air. The louver frame 1 is rectangular and includes a front side, a left side, a right side and a rear side, wherein the front side extends the horizontal projection surface of the air shaft 11 and is provided with a drainage opening 13, which can effectively discharge rainwater entering the louver frame 1 to prevent water accumulation. Closing plates 14 are provided on the left side, the right side and the rear side, and rainwater does not need to be discharged in these directions. The presence of these closing plates 14 further enhances the structural strength and protection capability of the entire structure, especially in harsh environments, and can effectively prevent rainwater or other debris from entering the louver frame 1.

[0043] The louver 2 extends obliquely downward from the rear side of the louver frame 1 to the drainage opening 13 on the front side, and its slope is 2%-3%. This slope design ensures that rainwater can flow smoothly to the drainage opening 13 under the action of gravity, avoiding being trapped in the louver frame 1 and causing water accumulation. At the same time, the drainage opening 13 is rotatably connected with a baffle 15, which is connected to the lower edge of the drainage opening 13 through a rotating shaft and can rotate around the rotating shaft to realize the opening or closing operation of the drainage opening 15. When the louver 2 is in the open state, the baffle 15 is stored at the bottom of the louver frame 1 to ensure smooth drainage; when the louver 2 is in the closed state, the louver 2 rotates, and the baffle 15 rotates synchronously to the position of the drainage opening 13 to close it, further improving the protection performance of the louver frame 1 and preventing rainwater from entering the air shaft 11 from the side. Horizontal rain shields 16 are also provided on the left and right sides of the louver frame 1. The rain shields 16 are installed vertically to the vertically arranged closing plates 14 on the left and right sides, which can effectively prevent rainwater from falling directly into the air shaft 11 from the edge side of the louver frame 1, further enhancing the rainproof performance, especially in strong wind and rain conditions.

[0044] See also Figure 8-9 In one embodiment, a connecting plate 17 is provided at the front side of the shutter frame 1, and the connecting plate 17 can connect the left and right closing plates 14, which can improve the overall strength and stability of the shutter frame 1, and can enhance the anti-deformation ability of the structure, especially when the wind pressure is large. At this time, the drainage opening 13 is provided at the lower part of the connecting plate 17, so that rainwater can be discharged smoothly from the lower part of the connecting plate 17, effectively preventing water accumulation.

[0045] See also Figure 10-11 In another embodiment, the connecting plate 17 may be omitted. Omitting the connecting plate 17 may simplify the structure of the shutter frame 1, reduce the manufacturing cost, and provide greater flexibility in certain installation environments.

[0046] An embodiment of the present invention also discloses an open wind pavilion, which is designed to be compatible with underground projects such as subway stations. The open wind pavilion includes an air shaft 11 and the above-mentioned rainproof louver assembly arranged above the air shaft 11. The rainproof louver assembly reasonably arranges multiple louvers 2 in the louver frame 1 so that the horizontal projection of the louver 2 can completely cover the air inlet 12 of the air shaft 11. This design can not only ensure that the air inlet 12 is effectively protected by the louver 2 in any state, but also effectively guide the outside air to smoothly enter the air shaft 11 through the arrangement structure and the inclination angle of the louver 2, and prevent rainwater, dust and other impurities from directly entering the air inlet 12. The rainproof louver assembly arranged in this way greatly enhances the protective performance of the open wind pavilion, especially under severe weather conditions, and can ensure that the interior of the air shaft 11 remains clean and dry, while ensuring the air circulation.

[0047] In one embodiment of the present invention, an intelligent control system is further introduced, which can automatically adjust the opening and closing state of the shutter 2 according to the real-time weather conditions. The system includes a rain sensor arranged on the outside of the shutter frame 1, which can continuously monitor the meteorological conditions of the environment and is connected to the control module of the shutter assembly through a signal transmission module. When the rain sensor detects that there is no rain or the rainfall is not large, the control system will keep the shutter 2 in the current state without rotating it. The rainwater can be discharged through the gutter 5 and the drainage opening 13 without affecting normal ventilation. When the rain sensor detects that the rainfall exceeds the preset standard, the control module will issue an instruction to start the rotation mechanism of the shutter 2, so that the shutter 2 automatically rotates to the closed state to prevent rainwater from entering the air shaft 11. At the same time, the baffle 15 will also be synchronously operated by the electric control device to automatically close the drainage opening 13 to ensure the waterproof performance of the entire system in heavy rain weather. In addition, the system also supports remote operation. Through wireless control or network connection, users can remotely view real-time weather conditions and manually control the opening and closing status of the shutters 2 and the baffles 15 as needed. The electric control device can make the shutters 2 and the baffles 15 rotate in a precise and stable manner, ensuring that the shutter components always maintain the best condition under different weather conditions.

[0048] In summary, the present invention provides a rainproof louver assembly and an open wind pavilion using the rainproof louver assembly. Through the multiple obliquely arranged louvers 2 in the louver frame 1, the rainwater flow can be effectively guided to prevent it from entering the ventilation path, and the drainage ditch 5, the drainage net 6 and the counterweight 7 are set to further enhance the drainage and protection effects. When the louver 2 is in the open state, it can achieve a good ventilation effect and effectively block the entry of rainwater. When it is closed, the louver 2 can effectively seal the air shaft 11 to ensure rainproof performance under severe weather conditions. In addition, the reasonable height ratio of the second guide plate 4 and the design of the flexible drainage net 6 with 30% openings ensure that the system has excellent rainproof and anti-pollution capabilities while maintaining good ventilation. The louver frame 1 of the present invention can be designed according to the size of the air inlet 12 of the air shaft 11, and it can be directly placed on the upper part of the civil engineering base of the air outlet of the open wind pavilion, without any destruction or modification of the existing civil engineering structure, thereby simplifying the installation process, reducing the engineering time and cost, and improving the safety and reliability of the entire system, which is particularly suitable for various engineering renovations and new construction projects. The louver frame 1 is provided with a baffle 15, which can realize the opening or closing of the drainage opening 13 by rotation, which is easy to operate and further optimizes the convenience of use of the system. In short, the open wind pavilion using the rainproof louver assembly of the present invention can not only ensure the safety of the air shaft 11 under extreme weather conditions, but also keep the interior clean and dry, provide more efficient ventilation performance and protection capabilities, so that the louver 2 can achieve ventilation but not rain penetration in the open state, and can completely seal the air shaft in the closed state, simplifying the structure, reducing the manufacturing and installation costs, and enhancing the reliability and adaptability of the system, and has a wide range of application prospects.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rainproof shutter assembly, comprising a shutter frame (1) and a plurality of obliquely arranged shutters (2) in the shutter frame (1), characterized in that: The louver (2) comprises a first guide plate (3) and a second guide plate (4) bent upward from the bottom of the first guide plate (3); a drainage ditch (5) for rainwater drainage is formed between the second guide plate (4) and the first guide plate (3); a drainage net (6) is arranged between adjacent louvers (2); one end of the drainage net (6) is fixed to the top end of the first guide plate (3) of one of the louvers (2); the other end is connected to a counterweight (7) and contacts the middle part of the first guide plate (3) of the adjacent louver (2) on the inclined side; the horizontal projection of the first guide plate (3) of one of the louvers (2) covers the horizontal projection of the second guide plate (4) of the adjacent louver (2) on the inclined side; The louvers (2) include an open state and a closed state. In the open state, the horizontal plane where the contact position of the counterweight (7) and the first guide plate (3) is located is the highest water level of the drainage ditch (5), and a ventilation path of the louver frame (1) is formed between the louvers (2). In the closed state, the louvers (2) rotate, and the first guide plate (3) of one louver (2) fits with the second guide plate (4) of the adjacent louver (2) on the inclined side, thereby closing the ventilation path of the louver frame (1).

2. The rainproof shutter assembly according to claim 1, characterized in that: The height of the second guide plate (4) in the vertical direction is 1 / 3-2 / 3 of that of the first guide plate (3).

3. The rainproof shutter assembly according to claim 2, characterized in that: The drainage net (6) is made of a flexible fabric with 30% openings.

4. The rainproof shutter assembly according to claim 3, characterized in that: A water leakage plate (8) is arranged between the top end of the second guide plate (4) and the top end of the first guide plate (3), and a plurality of water leakage holes (9) are arranged on the water leakage plate (8), and rainwater flows into the drainage ditch (5) through the water leakage holes (9).

5. The rainproof shutter assembly according to claim 3, characterized in that: The first guide plate (3) comprises a bent portion (10) on the upper side, and in a closed state, the top end of the second guide plate (4) of the adjacent louver (2) on the inclined side abuts against the bent portion (10).

6. The rainproof shutter assembly according to claim 4 or 5, characterized in that: The plurality of louvers (2) are connected via connecting rods to achieve synchronous rotation, and the rotation axis of the louvers (2) is located in the middle or at the bottom.

7. The rainproof shutter assembly according to claim 6, characterized in that: The upper side of the shutter frame (1) is an open structure, the lower side is connected to the air inlet (12) of the air shaft (11), the front side extends out of the horizontal projection plane of the air shaft and is provided with a drainage opening (13), and the left side, right side and rear side are all provided with closing plates (14).

8. The rainproof shutter assembly according to claim 7, characterized in that: The louver (2) extends obliquely downward from the rear side of the louver frame (1) to the drainage opening (13) at the front side, with a slope of 2%-3%.

9. The rainproof shutter assembly according to claim 8, characterized in that: The drainage opening (13) is rotatably connected to a baffle (15); when the shutter (2) is in an open state, the baffle (15) is stored at the bottom of the shutter frame (1); when the shutter (2) is in a closed state, the shutter (2) rotates, and the baffle (15) synchronously rotates to a position to close the drainage opening (13).

10. An open wind pavilion, characterized in that: The open wind pavilion comprises an air shaft (11) and a rainproof shutter assembly as described in any one of claims 1 to 9 arranged above the air shaft (11), and the horizontal projection of the multiple shutters (2) in the shutter frame (1) can completely cover the air inlet (12) of the air shaft (11).

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