Smoke exhaust tower capable of promoting natural ventilation
By designing the structure of the smoke exhaust louver, utilizing wind power to regulate ventilation and employing a rainproof fish-scale structure, the problem of traditional smoke exhaust louvers being unable to utilize natural wind power and weather changes has been solved, achieving efficient natural ventilation and waterproofing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANTONG WANWEI NEW ENERGY TECH CO LTD
- Filing Date
- 2023-07-12
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional smoke exhaust louvers cannot effectively utilize natural wind to promote ventilation, nor can they adjust the ventilation effect according to weather changes, resulting in poor smoke exhaust performance.
A smoke exhaust louver was designed, comprising a roof, side baffles, telescopic rods, control chambers, rainproof fish scales, and exhaust vents. By controlling the spacing between the chambers and the rainproof fish scale structure according to wind force changes, the ventilation effect can be achieved by adjusting the wind force, and water leakage can be prevented in windy and rainy weather.
It improves ventilation under different wind conditions, prevents water leakage during strong winds and heavy rain, and achieves efficient natural ventilation and waterproofing without the need for power maintenance.
Smart Images
Figure CN117364998B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of smoke exhaust louvers, and in particular to a smoke exhaust louver that can promote natural ventilation. Background Technology
[0002] Smoke exhaust ducts are the main ventilation equipment in factories. Because many mechanical devices are arranged inside the factory workshops, in order to ensure the normal working environment of employees, the workshop roofs generally use a combination of ceiling fans and smoke exhaust ducts to assist in the air circulation of the entire workshop.
[0003] In traditional smoke exhaust systems, a roof structure is simply added above the skylight to block most of the rainwater. Essentially, it is still a waterproof skylight structure. In terms of smoke exhaust, it mainly relies on natural ventilation and cannot utilize natural wind to promote the ventilation of the skylight. Furthermore, it cannot adjust the ventilation environment according to the weather. How to improve the ventilation effect of smoke exhaust louvers is one of the problems that needs to be solved.
[0004] Therefore, we propose a smoke exhaust louver that can promote natural ventilation to solve the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a smoke exhaust louver that can promote natural ventilation, in order to solve the problem mentioned in the background art of how to actively improve the smoke exhaust effect of skylights and make corresponding adaptations according to the weather. The technical solution of this invention provides a solution that is significantly different from the existing technology, addressing the problem that the existing technical solutions are too simplistic.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A smoke exhaust louver that promotes natural ventilation includes a roof, side baffles installed on both sides of the roof, a telescopic rod installed on the top of the roof, a control cavity connected to the top of the telescopic rod, exhaust holes evenly spaced on the surface of the roof, and rainproof fish scales evenly spaced on the surface of the roof, with a drainage hole at one end of each rainproof fish scale.
[0008] In a further embodiment, the rainproof fish scales correspond one-to-one with the vent holes and are located directly above the vent holes. The rainproof fish scales are connected to the canopy via a torsion spring shaft. A limiting plate is fixedly connected to the surface of the canopy, and the limiting plate and the surface of the rainproof fish scales are movably connected to each other.
[0009] In a further embodiment, the control cavity is a hollow structure, with an arc-shaped upper surface and a planar lower surface, the lower surface of which is opposite to the upper surface of the ceiling.
[0010] In a further embodiment, the side baffle is connected to the ceiling by a bracket, and there is a gap between the bottom edge of the side baffle and the upper surface of the ceiling.
[0011] In a further embodiment, the end of the rainproof fish scale away from the rotating shaft is a semi-circular structure, and the drainage hole is located at the midpoint of the semi-circular arc of the rainproof fish scale.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] This invention utilizes the unique structure of the smoke exhaust louver. When air enters the louver, it gathers at the edges. The distance between the bottom surface of the control cavity and the upper surface of the ceiling is controlled by a control chamber. When the airflow is high, the upper surface of the control cavity has an arc-shaped structure. Because the lower surface is flat, the airflow velocity on the upper surface is faster, leading to a greater likelihood of negative pressure. This causes the control cavity to rise, resulting in a higher elevation and greater airflow when the airflow is high. Conversely, when the airflow is low, the elevation is lower and the space is smaller, further accelerating the airflow velocity. This increases the negative pressure on the upper surface of the ceiling even with low airflow, enhancing suction on the ceiling's interior. Furthermore, a rainproof fish-scale structure is designed to prevent... Under the action of the torsion spring, the rainproof fish scales are always open parallel to the ground, keeping the exhaust vents in their normal state. In windy and rainy weather, rainwater flows down the top of the canopy and accumulates on the rainproof fish scales, causing them to close. This prevents rainwater from being directly driven into the exhaust vents by strong winds, thus preventing water leakage from the workshop roof. After the rain stops or the water gradually drains through the drainage holes, the rainproof fish scales can reopen to their original state, restoring natural ventilation. This achieves both efficient ventilation in windy weather and prevention of water leakage in extreme weather conditions such as heavy rain and strong winds. The entire device is unpowered, requires no maintenance, is safe and reliable, and can operate for a long time. Attached Figure Description
[0014] Figure 1 A schematic diagram of the main structure of a smoke exhaust louver that promotes natural ventilation.
[0015] Figure 2 A side view of the structure of a smoke exhaust louver that promotes natural ventilation.
[0016] Figure 3 A schematic diagram of the internal structure of a smoke exhaust louver designed to promote natural ventilation.
[0017] Figure 4 A schematic diagram of a rainproof fish-scale structure in a smoke exhaust louver that promotes natural ventilation.
[0018] In the diagram: 1. Roof; 2. Side panel; 3. Control chamber; 4. Telescopic rod; 5. Rainproof fish scale; 6. Drainage hole; 7. Exhaust hole; 8. Limiting plate. Detailed Implementation
[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Please see Figure 1-4 In this invention, a smoke exhaust louver that promotes natural ventilation includes a ceiling 1, side baffles 2 installed on both sides of the ceiling 1, a telescopic rod 4 installed on the top of the ceiling 1, a control cavity 3 connected to the top of the telescopic rod 4, exhaust holes 7 equidistantly opened on the surface of the ceiling 1, rainproof fish scales 5 equidistantly installed on the surface of the ceiling 1, and a drainage hole 6 opened at one end of the rainproof fish scales 5.
[0023] Example 1: Please refer to Figure 1-4In this embodiment of the invention, a smoke exhaust louver that promotes natural ventilation is provided. The rainproof fish scales 5 correspond one-to-one with the exhaust holes 7 and are located directly above the exhaust holes 7. The rainproof fish scales 5 are connected to the ceiling 1 via a torsion spring shaft. A limiting plate 8 is fixedly connected to the surface of the ceiling 1. The limiting plate 8 and the surface of the rainproof fish scales 5 are movably connected to each other. The edges of the rainproof fish scales 5 are rolled, which can play a certain role in holding water. When it rains, the rainproof fish scales 5 can be bent downward by the accumulated water, thereby completely closing the exhaust holes 7. This can prevent rainwater from entering the room through the exhaust holes 7. The limiting plate 8 can limit the maximum rotation angle of the rainproof fish scales 5, which can prevent the rainproof fish scales 5 from being blown completely upward by the wind in windy and rainy weather, causing rainwater to directly enter the interior of the exhaust holes 7.
[0024] The end of the rainproof fish scale 5 away from the rotating shaft is a semi-circular structure. The drainage hole 6 is opened at the midpoint of the semi-circular arc of the rainproof fish scale 5. The semi-circular structure at the front end of the rainproof fish scale 5 allows water to gather towards the center, so that the drainage hole 6 can smoothly drain all the water away.
[0025] Example 2: Please refer to Figure 1-4 The difference from Embodiment 1 is that the control cavity 3 is a hollow structure, the upper surface of the control cavity 3 is an arc-shaped structure, and the lower surface is a flat structure. The lower surface of the control cavity 3 is opposite to the upper surface of the ceiling 1. The control cavity 3 is a hollow structure to minimize the overall weight of the control cavity 3. Since the upper surface of the control cavity 3 is an arc-shaped structure and the lower surface is a flat structure, when the wind blows, the wind speed is always the same, and the distance the wind travels across the arc surface is longer than the distance across the flat surface. This will cause the air pressure at the arc surface to decrease, which will change the distance between the control cavity 3 and the ceiling 1. When the air volume is small, the distance is relatively small, the wind speed on the upper surface of the ceiling 1 is increased, and the suction force generated is stronger.
[0026] Example 3: Please refer to Figure 1-4 The difference from Embodiment 1 is that the side baffle 2 and the ceiling 1 are connected by a bracket, and there is a gap between the bottom edge of the side baffle 2 and the upper surface of the ceiling 1. The gap between the side baffle 2 and the ceiling 1 allows air to pass through, and gathers the outside air into the control cavity 3 and the upper surface of the ceiling 1.
[0027] The working principle of this invention is:
[0028] When the weather is windy, the wind usually blows into the equipment through the gap between the ceiling 1 and the side baffle 2. When the wind blows to the outer surface of the control cavity 3, the upper surface of the control cavity 3 is relatively long and the lower surface is relatively short. This will cause the air flow rate above the control cavity 3 to be faster, resulting in lower air pressure above the control cavity 3. The entire control cavity 3 will have a lifting effect. After the lifting, the distance between the control cavity 3 and the upper surface of the ceiling 1 will change.
[0029] When encountering strong winds, the control chamber 3 will be raised to a higher height, resulting in a greater amount of gas flowing into the gap, and a greater amount of air entering the exhaust port 7, thus enhancing the heat dissipation effect.
[0030] When encountering weak winds, the lifting height of the control cavity 3 is relatively low. With the gas flow rate remaining constant, the reduced space at the gap will cause the gas flow rate to increase. The faster gas flow rate will cause the air pressure on the ceiling 1 to decrease, making it easier for the gas below the ceiling 1 to flow out from the exhaust port 7, thus strengthening the heat dissipation capacity of the ceiling 1.
[0031] In the event of heavy rain or strong winds, rainwater will drip down from the highest point of the canopy 1 and accumulate inside the rainproof fish scales 5. Eventually, the rainproof fish scales 5 will be pressed downwards against the force of the torsion spring, causing one end of the drainage hole 6 of the rainproof fish scales 5 to be bent downwards. This prevents rainwater from rushing into the vent 7 during strong winds and heavy rain. The drainage hole 6 will slowly drain water outwards, thus solving the problem of water accumulation.
[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A smoke exhaust louver that promotes natural ventilation, characterized in that: Includes a roof (1), with side baffles (2) installed on both sides of the roof (1), a telescopic rod (4) installed on the top of the roof (1), a control cavity (3) connected to the top of the telescopic rod (4), exhaust holes (7) evenly spaced on the surface of the roof (1), rainproof fish scales (5) evenly spaced on the surface of the roof (1), and a drainage hole (6) opened at one end of the rainproof fish scales (5); The rainproof fish scales (5) correspond one-to-one with the exhaust holes (7) and are located directly above the exhaust holes (7). The rainproof fish scales (5) are connected to the canopy (1) by a torsion spring shaft. A limiting plate (8) is fixedly connected to the surface of the canopy (1). The limiting plate (8) and the surface of the rainproof fish scales (5) are movably connected to each other. The side baffle (2) is connected to the roof (1) by a bracket, and there is a gap between the bottom edge of the side baffle (2) and the upper surface of the roof (1).
2. A smoke exhaust tower that promotes natural ventilation according to claim 1, characterized in that: The control cavity (3) is a hollow structure. The upper surface of the control cavity (3) is an arc structure and the lower surface is a planar structure. The lower surface of the control cavity (3) is opposite to the upper surface of the ceiling (1).
3. A smoke exhaust tower capable of promoting natural ventilation according to claim 1, characterized in that: The end of the rainproof fish scale (5) away from the rotating shaft is a semi-circular structure, and the drainage hole (6) is opened at the midpoint of the semi-circular arc of the rainproof fish scale (5).