Ventilation device of green building

Abstract

The invention discloses a ventilation device of a green building, which comprises a vertically arranged air duct, a first air duct and a second air duct which are arranged side by side in the air duct and are both filled with a water filtering material, the bottom end of the first air duct is connected with an air inlet, and the top end of the first air duct is connected with a first air outlet; the first air duct is provided with a communication port communicated with the second air duct close to the first air outlet, and the bottom end of the second air duct is connected with a second air outlet; the part, from the communicating port to the first air outlet, of the first air duct is configured as a low-resistance section which is not filled with a water filtering material and is suitable for discharging air from the first air outlet; a base plate and a switching plate capable of enabling the first air channel to move in the air direction are arranged in the low-resistance section, the base plate is provided with a first through opening allowing air to pass through, and the switching plate can move towards the base plate under the action of wind power. And the communication of the first through hole is maintained under first wind power with relatively weak wind power, and the first through hole is blocked under second wind power with relatively strong wind power. The ventilation system has the beneficial effects that ventilation paths are automatically switched according to the wind power, and efficient water filtering and energy saving are achieved.

Description

Technical Field

[0001] This invention relates to a ventilation device for green buildings, primarily used in the construction field. Background Technology

[0002] Green buildings emphasize energy conservation and environmental protection. Their ventilation systems, when introducing fresh outdoor air, must effectively filter out moisture to prevent excessive indoor humidity and mold growth. Currently, most common ventilation devices use ducts filled with water-filtering materials (such as filter cotton) to dehumidify the air. However, these devices perform poorly under different wind conditions: when the fan operates at low power or the natural wind speed is low, the airflow is slow, and the contact time between the air and the filter material is long, allowing for thorough moisture removal; but when the wind is strong and fast, the time the air spends passing through the filter material is shortened, and water droplets, due to inertia, fail to fully impact and adhere to the fibers, resulting in incomplete dehumidification. Air carrying moisture is then introduced into the room, affecting comfort and health. Summary of the Invention

[0003] The purpose of this invention is to provide a ventilation device for green buildings that automatically switches the ventilation path according to the wind force, thereby achieving efficient water filtration and energy saving.

[0004] The present invention is achieved through the following technical solution.

[0005] A ventilation device for a green building includes a vertically arranged air duct. A first air duct and a second air duct, both filled with water-filtering material, are arranged side by side inside the air duct. The bottom end of the first air duct is connected to an air inlet, and the top end is connected to a first air outlet. The first air duct has a connecting port to the second air duct near the first air outlet, and the bottom end of the second air duct is connected to a second air outlet.

[0006] The portion of the first air duct from the connecting port to the first air outlet is configured as a low-resistance section without filter material, suitable for allowing air to be discharged from the first air outlet; a substrate and a switching plate that can move along the wind direction of the first air duct are provided in the low-resistance section. The substrate has a first through-hole that allows air to pass through. The switching plate can move toward the substrate under the action of wind force, and maintain the connection of the first through-hole under the first wind force when the wind force is weak, and block the first through-hole under the second wind force when the wind force is strong.

[0007] As a further improvement of the present invention, a first magnetic attractor is provided on the substrate, a second magnetic attractor is provided on the switching plate, and a third magnetic attractor is provided in the low-resistance section away from the substrate. The first magnetic attractor and the second magnetic attractor are used to attract each other under the second wind force, and the second magnetic attractor and the third magnetic attractor are used to attract each other under the first wind force.

[0008] As a further improvement of the present invention, the substrate is provided with a plurality of guide rods extending along the wind direction of the first air duct, the switching plate slides through the guide rods, and the third magnetic attractor is provided at the end of the guide rod away from the substrate.

[0009] As a further improvement of the present invention, a filter screen is provided at the corresponding substrate of the first air duct for filtering dust from the air passing through the first through-hole.

[0010] As a further improvement of the present invention, the switching plate has a second through-hole that allows air to pass through, and the switching plate is slidably connected to a movable baffle that can move relative to the switching plate along the wind direction of the first air duct. The movable baffle can open the second through-hole under the first wind force and block the second through-hole under the second wind force by being blocked by the filter screen.

[0011] As a further improvement of the present invention, the movable baffle has a plurality of insert rods extending along the wind direction of the first air duct, the insert rods sliding through the switching plate, and the insert rods have a limiting head at the end away from the movable baffle that can abut against the switching plate.

[0012] As a further improvement of the present invention, a filter screen is provided in the second air duct near the second air outlet for filtering dust before the air is discharged from the second air outlet.

[0013] As a further improvement of the present invention, a water collection box is provided at the bottom of the air duct for collecting water filtered by the first air duct and the second air duct.

[0014] As a further improvement of the present invention, the cross-sectional area of ​​the first air duct is larger than the cross-sectional area of ​​the second air duct.

[0015] As a further improvement of the present invention, it also includes a fan assembly for inputting air into the air inlet, the fan assembly being configured with a low-power output power matching a first wind force and a high-power output power matching a second wind force.

[0016] The beneficial effects of this invention are:

[0017] The ventilation device of the present invention can realize an automatic switching mechanism without the need for an additional driving device, relying entirely on wind power and gravity, thereby reducing energy consumption and meeting the energy-saving requirements of green buildings. At the same time, it ensures that the water filtration effect can be maintained under different wind conditions, avoiding problems such as mold caused by excessive indoor humidity. It not only improves water filtration efficiency, but also extends the service life of the water filtration material. The overall structure is simple, reliable and easy to maintain. Attached Figure Description

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0019] Figure 1 This is a schematic diagram of the ventilation system.

[0020] Figure 2 This is a cross-sectional schematic diagram of the ventilation system;

[0021] Figure 3 This is a partial cross-sectional schematic diagram of the ventilation device under the first wind force.

[0022] Figure 4 This is a partial cross-sectional schematic diagram of the ventilation device under the second wind force. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0025] This embodiment illustrates a ventilation device for a green building, with reference to... Figures 1-4The ventilation device includes a vertically arranged air duct 1. Inside the air duct 1, two independent air ducts 1 are arranged side by side, namely a first air duct 11 and a second air duct 12. Both are filled with water-filtering materials, such as water-filtering cotton or other porous fiber materials. These materials change the airflow direction through their fiber structure, causing water droplets to impact and adhere to the fibers under inertia, thereby separating them from the air. The bottom end of the first air duct 11 is connected to an air inlet 1a for introducing outside air, and the top end is connected to a first air outlet 1b for discharging the filtered air into the building interior. A connecting port 13 is provided near the first air outlet 1b in the first air duct 11, which connects the first air duct 11 and the second air duct 12, allowing air to flow between the two air ducts 1. The bottom end of the second air duct 12 is connected to a second air outlet 1c for discharging air under certain conditions. The portion of the first air duct 11 from the connecting port 13 to the first air outlet 1b is configured as a low-resistance section d without filter material. Because this low-resistance section d lacks filter material, airflow resistance is low, facilitating rapid airflow. A fixed base plate 21 and a switching plate 22 movable along the wind direction of the first air duct 11 are disposed within the low-resistance section d. The base plate 21 has a first through-hole h1 that allows air to pass through. The switching plate 22 can move towards the base plate 21 under wind force, its movement responding to changes in wind force: under the first wind force (i.e., weak wind), the switching plate 22, due to the weak wind, cannot overcome its own weight or external resistance, thus maintaining the first through-hole h1 open, allowing air to pass freely; under the second wind force (i.e., strong wind), the switching plate 22 moves towards the base plate 21 under the stronger wind force, completely blocking the first through-hole h1, thereby preventing air from exiting from the first air outlet 1b. This embodiment enables the ventilation device to adapt to wind conditions. When the wind is weak, air mainly passes through the first air duct 11. Due to the low wind speed, the filter material has sufficient time to remove moisture. The air is discharged from the first air outlet 1b through the low-resistance section d. At this time, the second air duct 12 has high air resistance due to the filter material, so only a small portion of the air enters the second air duct 12 through the connecting port 13. When the wind is strong and the wind speed is high, the filter material in the first air duct 11 cannot completely remove moisture. The switching plate 22 blocks the first through port h1, forcing air to enter the second air duct 12 through the connecting port 13. After secondary filtration by the filter material in the second air duct 12, the air is discharged from the second air outlet 1c, ensuring that the air is fully filtered. In addition, when the air supply stops or the wind speed switches from the second wind speed to the first wind speed, the switching plate 22 automatically falls down by its own weight, reopening the first through port h1 and restoring the normal ventilation path. This automatic switching mechanism requires no additional drive devices, such as motors or sensors, and relies entirely on wind and gravity to achieve this, thereby reducing energy consumption and meeting the energy-saving requirements of green buildings. At the same time, it ensures that the water filtration effect is maintained under different wind conditions, avoiding problems such as mold caused by excessive indoor humidity.The ventilation device of this embodiment not only improves the water filtration efficiency, but also extends the service life of the water filtration material. Because the second air duct 12 is used to share the filtration task during strong winds, the load on the single air duct 1 is reduced. The overall structure is simple, reliable, and easy to maintain.

[0026] In this embodiment, to improve the stability of the switching plate 22 under wind force changes, the ventilation device is provided with a first magnetic attractor c1 on the substrate 21, a second magnetic attractor c2 on the switching plate 22, and a third magnetic attractor c3 at a position away from the substrate 21 in the low-resistance section d. These magnetic attractors are typically made of permanent magnets or electromagnets. The first magnetic attractor c1 and the second magnetic attractor c2 are configured to attract each other under the second wind force. That is, when the wind force is strong, the switching plate 22 contacts the substrate 21 under the push of the wind force. At this time, the magnetic force between the first magnetic attractor c1 and the second magnetic attractor c2 makes the switching plate 22 fit tightly against the substrate 21, ensuring that the first through-hole h1 is completely blocked, and avoiding slight displacement of the switching plate 22 due to wind force fluctuations or airflow disturbances, which would create gaps and affect the sealing effect. Meanwhile, the second magnetic attractor c2 and the third magnetic attractor c3 are configured to attract each other under the first wind force. That is, when the wind force is weak, the switching plate 22 cannot overcome its own weight and magnetic attraction due to the weak wind force, and is therefore attracted by the third magnetic attractor c3 to a position away from the substrate 21, keeping the first through-hole h1 open. This attraction can prevent the switching plate 22 from sliding back and forth slightly under wind fluctuations, thereby avoiding chaotic or unstable airflow in the first air duct 11 and ensuring smooth airflow. The weight of the switching plate 22 can overcome the magnetic attraction and residual wind force when the wind force weakens or stops, and naturally fall back to its initial position. This combination of magnetic attractors not only enhances the reliability of the device, but also improves the accuracy of automatic switching, enabling the ventilation device to maintain stable operation in complex wind environments, further optimizing energy-saving effects, because it can maintain optimal working conditions without external control, reducing maintenance needs.

[0027] In this embodiment, to further improve the guidance and smoothness of the movement of the switching plate 22, a plurality of guide rods 211 extending along the wind direction of the first air duct 11 are provided on the substrate 21. These guide rods 211 are typically cylindrical or track-like structures, evenly distributed around the substrate 21. The switching plate 22 has corresponding sliding holes, allowing the switching plate 22 to slide through the guide rods 211, thereby moving linearly along the wind direction under the action of wind force, avoiding deviation or jamming. The third magnetic suction member c3 is located at the end of the guide rod 211 away from the substrate 21, i.e., the end of the guide rod 211. Thus, when the switching plate 22 is attracted to a position away from the substrate 21, the third magnetic suction member c3 can directly dock with the second magnetic suction member c2 on the switching plate 22, providing a stable attraction force. The guide rods 211 not only serve as sliding guides but also enhance the rigidity of the overall structure, preventing deformation due to excessive wind force.

[0028] In this embodiment, based on comprehensive air quality filtration considerations, a filter screen r is provided at the corresponding substrate 21 in the first air duct 11. This filter screen r is typically composed of a fine mesh or fiber layer and is installed near the substrate 21 or at the inlet of the low-resistance section d to filter dust from the air passing through the first through-hole h1. Although water-filtering materials can effectively remove moisture, their fiber structure is mainly designed for the inertial capture of water droplets, resulting in lower efficiency in capturing dry, fine dust particles. Therefore, the filter screen r can compensate for this deficiency, intercepting particulate matter such as dust and pollen in the air, thereby providing cleaner indoor air. The pore size of the filter screen r can be adjusted as needed to achieve high-efficiency filtration. This combined filtration method allows the ventilation device to filter water while also removing dust, improving the overall ventilation quality. It is particularly suitable for areas with poor air quality and meets the green building's pursuit of a healthy environment.

[0029] In this embodiment, to further improve the utilization rate of the filter material and the uniformity of airflow distribution within the first air duct 11, the switching plate 22 has a second through-hole h2 that allows air to pass through. The switching plate 22 is slidably connected to a movable baffle 23 that can move relative to the switching plate 22 along the wind direction of the first air duct 11, allowing the movable baffle 23 to move independently under wind force. Under the first wind force, which is relatively small, the movable baffle 23 moves towards the switching plate 22 under the impact of the wind, opening the second through-hole h2. At this time, air can flow not only through the gaps around the switching plate 22 but also through the second through-hole h2 to the first through-hole h1, thereby increasing the airflow channels and making the air more evenly distributed within the first air duct 11. This avoids excessively fast local airflow within the first air duct 11 due to the effect of the switching plate 22 on the air, which could lead to insufficient utilization of the filter material. Instead, the filter material participates in filtration as a whole, improving filtration efficiency. Under the second wind force, the switching plate 22 moves towards the substrate 21 under the action of strong wind and blocks the first through-hole h1. At the same time, the movable baffle 23 is blocked by the filter screen r and cannot move further, thus blocking the second through-hole h2. This completely seals the area of ​​the substrate 21, preventing air from escaping from the switching plate 22 and ensuring that all air enters the second air duct 12 through the connecting port 13 for secondary filtration. The filter screen r here not only serves to filter dust but also acts as a mechanical limiting component for the movable baffle 23. Through this dynamic adjustment, the ventilation device can optimize the airflow path under different wind forces, maximize the use effect of the water filtration material, reduce the waste of water filtration performance, and avoid pressure loss caused by uneven airflow resistance.

[0030] In this embodiment, considering the precise control and stability of the movement of the movable baffle 23, the movable baffle 23 has multiple inserts 231 extending along the wind direction of the first air duct 11. These inserts 231 slide through corresponding holes on the switching plate 22, allowing the movable baffle 23 to move linearly relative to the switching plate 22. A limiting head 232 is provided at the end of the insert 231 furthest from the movable baffle 23. The size of the limiting head 232 is larger than the hole on the switching plate 22. Therefore, when the movable baffle 23 moves, the limiting head 232 can abut against the switching plate 22, preventing the movable baffle 23 from completely detaching from the switching plate 22, thereby limiting the range of movement and avoiding damage caused by excessive displacement.

[0031] In this embodiment, to ensure the cleanliness of the air discharged from the second air duct 12, a filter screen r is installed near the second air outlet 1c to filter dust from the air before it is discharged from the second air outlet 1c. Although the second air duct 12 is mainly used for filtering water during strong winds, the air may still carry a small amount of dust after passing through the water-filtering material. Therefore, the addition of the filter screen r can further purify the air and provide consistent air quality. The installation position and type of the filter screen r are similar to those of the first air duct 11, and different filtration levels can be selected as needed to ensure that the entire ventilation system can output clean air in both operating modes.

[0032] In this embodiment, based on practicality and environmental considerations for collecting and filtering water, a water collection box 14 is installed at the bottom of the air duct 1 to collect the water generated during the filtration process of the first air duct 11 and the second air duct 12. The water collection box 14 is typically located at the bottom of the air duct 1 and is connected to the air inlet 1a or the lower part of the air duct 1. Gravity causes the filtered water droplets to collect in the box. The water collection box 14 is detachable for easy periodic cleaning or drainage, preventing water accumulation from breeding bacteria or affecting the performance of the device. This not only keeps the inside of the air duct 1 dry and prevents corrosion, but also allows the collected water resources to be recycled and reused, such as for plant irrigation or cooling systems, further embodying the concept of energy conservation and environmental protection.

[0033] In this embodiment, to optimize airflow dynamics and filtration efficiency, the cross-sectional area of ​​the first air duct 11 is larger than that of the second air duct 12. The first air duct 11 serves as the main filtration channel and participates in the water filtration process under both the first and second airflow forces: under the first airflow force, air mainly passes through the first air duct 11, and its larger cross-sectional area results in lower airflow resistance, allowing the air to flow smoothly and fully contact the filter material for moisture removal; under the second airflow force, although the switching plate 22 blocks the first air outlet 1b, forcing some air to enter the second air duct 12 through the connecting port 13, the first air duct 11 still undertakes the initial filtration task. The air has already undergone pretreatment by the filter material in the first air duct 11 before entering the second air duct 12; therefore, the cross-sectional area of ​​the first air duct 11 is set to be larger than that of the second air duct 12.

[0034] In this embodiment, the ventilation device further includes a fan assembly 3 for introducing air into the air inlet 1a. The fan assembly 3 is configured with a low-speed output power matching a first airflow force and a high-speed output power matching a second airflow force. The fan is typically a centrifugal fan or an axial fan, installed at the air inlet 1a, and its power is switched via electrical control. The low-speed setting corresponds to a low airflow rate and is used for daily ventilation, while the high-speed setting corresponds to a high airflow rate and is used for rapid air exchange or high humidity environments.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail 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 of the technical features. Such 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 of the present invention.

Claims

1. A ventilation device for green buildings, characterized in that, The system includes a vertically arranged air duct, within which a first air duct and a second air duct are arranged side by side and both filled with water-filtering material. The bottom end of the first air duct is connected to an air inlet, and the top end is connected to a first air outlet. Near the first air outlet, the first air duct has a connecting port that connects to the second air duct, and the bottom end of the second air duct is connected to a second air outlet. The portion of the first air duct from the connecting port to the first air outlet is configured as a low-resistance section without filter material, suitable for allowing air to be discharged from the first air outlet; a substrate and a switching plate that can move along the wind direction of the first air duct are provided in the low-resistance section; the substrate has a first through-hole that allows air to pass through; the switching plate can move toward the substrate under the action of wind force, and maintain the connection of the first through-hole under a weak first wind force, and block the first through-hole under a strong second wind force.

2. The ventilation device for green buildings according to claim 1, characterized in that, A first magnetic attractor is provided on the substrate, a second magnetic attractor is provided on the switching plate, and a third magnetic attractor is provided on the low-resistance section away from the substrate. The first magnetic attractor and the second magnetic attractor are used to attract each other under the second wind force, and the second magnetic attractor and the third magnetic attractor are used to attract each other under the first wind force.

3. The ventilation device for green buildings according to claim 2, characterized in that, The substrate is provided with a plurality of guide rods extending along the wind direction of the first air duct, the switching plate slides through the guide rods, and the third magnetic attractor is disposed at the end of the guide rod away from the substrate.

4. The ventilation device for green buildings according to claim 1, characterized in that, The first air duct is provided with a filter screen at the location corresponding to the substrate, for filtering dust from the air passing through the first through-hole.

5. The ventilation device for green buildings according to claim 4, characterized in that, The switching plate has a second through-hole that allows air to pass through, and the switching plate is slidably connected to a movable baffle that can move relative to the switching plate along the wind direction of the first air duct. The movable baffle can open the second through-hole under a first wind force and block the second through-hole under a second wind force by being blocked by the filter screen.

6. The ventilation device for green buildings according to claim 5, characterized in that, The movable baffle has a plurality of insert rods extending along the wind direction of the first air duct. The insert rods slide through the switching plate, and the insert rods have a limiting head at the end away from the movable baffle that can abut against the switching plate.

7. The ventilation device for green buildings according to claim 4, characterized in that, The second air duct is equipped with a filter screen near the second air outlet to filter dust before the air is discharged from the second air outlet.

8. The ventilation device for green buildings according to claim 1, characterized in that, A water collection box is provided at the bottom of the air duct to collect the water filtered by the first air duct and the second air duct.

9. The ventilation device for green buildings according to claim 1, characterized in that, The cross-sectional area of ​​the first air duct is larger than that of the second air duct.

10. The ventilation device for green buildings according to claim 1, characterized in that, It also includes a fan assembly for introducing air into the air inlet, the fan assembly being configured with a low-power output matching a first airflow and a high-power output matching a second airflow.

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