An ambient air monitoring device
By linking the elastic plate group and the guide plate mechanism, the air inlet is automatically adjusted and dust is cleaned, which solves the sensor overload problem of traditional air monitoring devices in windy weather and achieves stable airflow sampling and self-cleaning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李鑫航
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional air monitoring devices lack wind speed adaptive adjustment mechanisms under windy weather conditions, which leads to an abnormal increase in the air intake system, causing sensor overload and detection abnormalities.
It adopts a linkage elastic plate group and wind direction response mechanism to automatically align with the strong wind direction and close the remaining air inlets. Combined with the periodic rotation and cleaning of the guide plate and the guidance of the dust collection trough, it achieves self-cleaning and stable airflow sampling.
To ensure stable and clean airflow sample collection in complex environments, prevent dust intrusion, improve sensor reliability and data accuracy, and enable the device to self-clean.
Smart Images
Figure CN224581510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air monitoring device technology, and more specifically, to an ambient air monitoring device. Background Technology
[0002] As a crucial technological carrier in the field of environmental monitoring, ambient air monitoring devices have evolved from fixed sampling and analysis to mobile real-time monitoring. Existing solutions typically employ integrated designs, including sampling units, sensor arrays, data transmission modules, and power supply systems. They utilize technologies such as electrochemical sensors and optical particle counters to achieve continuous monitoring of air pollutants such as PM2.5, PM10, NOx, and SO2. Some high-end devices also incorporate meteorological parameter sensors, enabling simultaneous collection of environmental data such as temperature, humidity, wind speed, and wind direction. Installation methods for these monitoring devices encompass tower-mounted fixed monitoring stations, vehicle-mounted mobile monitoring platforms, and unmanned aerial vehicle (UAV)-based monitoring systems, forming a comprehensive monitoring network covering urban areas, industrial zones, and remote regions.
[0003] In windy weather, traditional monitoring devices lack an adaptive wind speed adjustment mechanism for their air intake systems. When the wind speed exceeds the design threshold, strong winds directly impact the sampling unit, causing an abnormal increase in air intake. This abnormal air intake state can overload the sensor, causing abnormal light scattering in the optical detection unit and response delay in the electrochemical sensor due to excessively high gas flow rate.
[0004] Therefore, we have made improvements to this and proposed an ambient air monitoring device. Utility Model Content
[0005] In order to achieve the above-mentioned objectives, this utility model provides an ambient air monitoring device to improve the aforementioned problems.
[0006] The application is as follows:
[0007] include:
[0008] The air inlet duct has at least three air inlets on its curved surface;
[0009] The bottom pipe is set in the inner wall of the air inlet pipe and narrows the air inlet path of the air inlet pipe into an air inlet path with a smaller diameter, and has an annular support surface.
[0010] The rotating shaft is rotatably mounted on the annular support surface and is circumferentially distributed along the annular path of the annular support surface;
[0011] A guide plate is set on the rotating shaft with the rotating shaft as the center point. The adjacent guide plates on the air inlet path are extended outward to cover the air inlet to form an air guiding path.
[0012] Small flexible plates are set at both ends of the adjacent guide plates covering the air inlet and are located on the guide path, with several ventilation holes opened on them.
[0013] Large elastic plates are spaced between two guide plates with small elastic plates and located on the windproof surface of the air inlet pipe.
[0014] When the wind enters the air inlet, the guide plate rotates parallel to the air inlet direction and straightens the small elastic plate located on the air guide path, and the pressure is transmitted from the large elastic plate to the two small elastic plates far away from the air inlet to form folds.
[0015] Preferred options also include:
[0016] The dust collection trough is formed on the annular support surface of the bottom pipe, creating a slope that allows dust to easily detach from the air inlet pipe under gravity.
[0017] Preferably, when the small elastic plate is gradually straightened due to the gradual parallelism of the two guide plates, the large elastic plate, which is in the same air intake direction as it, gradually straightens.
[0018] Preferably, a retaining ring is coaxially provided on the top surface of the bottom pipe and the air inlet pipe, covering the gap between the upper and lower bottom surfaces of the small elastic plate and the bottom pipe and the air inlet pipe.
[0019] Preferably, the maximum rotation path range of the guide plate does not overlap with the dust collection trough.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] In the scheme of this application:
[0022] To address the problems in the prior art, this application utilizes a linkage elastic plate assembly and a wind direction response mechanism to achieve automatic alignment of the main air inlet with the direction of strong winds and simultaneous closure of the remaining air inlets. The elastic plate folds and turbulence suppress impurity intrusion and excessive air intake. Simultaneously, the periodic rotation and cleaning of the guide plate and the slope guidance of the dust collection trough enable the self-cleaning of dust accumulation in the rotating mechanism, ensuring that the device continuously obtains stable and pure airflow samples in complex environments. Attached Figure Description
[0023] Figure 1 A front view of an ambient air monitoring device provided in this application;
[0024] Figure 2 This application provides a schematic diagram of the internal structure of an ambient air monitoring device.
[0025] Figure 3 This is an enlarged view of point A of an ambient air monitoring device provided in this application.
[0026] The image shows:
[0027] 1. Air inlet duct; 11. Air inlet; 2. Bottom duct; 21. Dust collection trough; 3. Rotating shaft; 4. Guide plate; 5. Small elastic plate; 51. Ventilation hole; 6. Large elastic plate. Detailed Implementation
[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.
[0029] For an example, please refer to... Figure 1 , Figure 2 and Figure 3 An ambient air monitoring device, comprising:
[0030] The air inlet duct 1 has at least three air inlets 11 on its curved surface;
[0031] The bottom pipe 2 is set in the inner wall of the air inlet pipe 1 and narrows the air inlet path of the air inlet pipe 1 into an air inlet path with a smaller diameter, and has an annular support surface.
[0032] Rotating shaft 3 is rotatably mounted on the annular support surface and is distributed circumferentially along the annular path of the annular support surface;
[0033] Guide plate 4 is set on the rotating shaft 3 with the rotating shaft 3 as the center of rotation point. The adjacent guide plate 4 on the air inlet 11 expands outward to cover the air inlet 11 to form an air guiding path.
[0034] The small elastic plate 5 is set at both ends of the adjacent guide plate 4 covering the air inlet 11 and is located on the guide path, and has several ventilation holes 51.
[0035] The large elastic plate 6 is spaced between two guide plates 4 with small elastic plates 5 and is located at the windproof surface of the air inlet pipe 1.
[0036] When the wind enters the air inlet 11, the guide plate 4 rotates in the direction parallel to the air inlet and straightens the small elastic plate 5 located on the air guide path, and transmits the pressure to the large elastic plate 6 to form folds on the two small elastic plates 5 far away from the air inlet 11.
[0037] When the ambient airflow impacts the arc-shaped surface of the air inlet duct 1, the wind force tends to enter from one or more air inlets 11 facing the wind direction. At this time, the wind pressure acting on the adjacent guide plates 4 along the path of the air inlet 11 will overcome their initial state of outward expansion and push them to rotate about the rotation axis 3 as the fulcrum in a direction parallel to the air inlet direction.
[0038] This rotation directly tightens the small elastic plate 5 connected to the "V-shaped adjacent ends" of the two guide plates 4, straightening it from a relaxed or slightly bent state, thereby maximizing the expansion of the ventilation holes 51 on it and providing a low-resistance channel for the main air intake path. At the same time, the rotation of the guide plates 4 transmits pressure through their connection points to the large elastic plates 6 located at intervals on the windproof surface of the air intake duct 1. The large elastic plates 6 deform under force and effectively transmit this pressure to the guide plates 4 opposite or adjacent to the current air intake path that are not directly affected by the wind force.
[0039] This pressure transmission forces the guide plates 4, which are far from the air inlet 11, to retract inward, thereby forcefully squeezing the small elastic plates 5 connected between them, causing them to wrinkle significantly. This wrinkled state has multiple effects: First, it greatly reduces or even blocks the effective ventilation area of the ventilation holes 51 on these small elastic plates 5, significantly reducing the air intake volume in non-air intake paths, so that the device can automatically constrain and focus on the direction of the strongest wind for the main air intake under complex and changing wind conditions;
[0040] Secondly, the folds themselves form complex grooves and protrusions, generating strong airflow disturbances. This turbulent state not only further hinders the smooth passage of air through these areas, but more importantly, it can effectively disrupt and block the straight intrusion path of external dust, impurities and other particles, greatly reducing the probability of them entering the device.
[0041] Finally, because the small elastic plate 5 in the non-main air inlet 11 area is tightly folded and sealed, the entire internal chamber of the device, under the action of wind pressure, essentially forms a one-way open semi-sealed structure with the main air inlet 11 as the entrance.
[0042] Strong winds enter through the main air inlet 11 and pass through the ventilation holes 51 on the taut small elastic plate 5. The high-speed airflow then directly impacts the large elastic plate 6, which is located downstream of its flow direction. The obstruction effect of the large elastic plate 6 forces this straight airflow to change direction and disperse violently, usually splitting into two or more strong counter-vortices to the left and right.
[0043] These reverse vortices are guided to the air inlet 11 within the chamber by the guide plate 4, which reduces the overall air intake speed and the effective air volume that actually enters deeper into the device, thus playing a natural role in damping and flow regulation.
[0044] Meanwhile, the small elastic plates 5, stretched taut at the main air inlets 11, allow the ventilation holes 51 to be fully open due to their flat unfolding, ensuring the acquisition of core monitoring airflow. Their relatively smooth surface, coupled with the airflow direction perpendicular to the plate surface, also reduces the possibility of dust adhering to and accumulating on their surface. More importantly, in the instant the wind direction changes or the wind force weakens, the elastic potential energy stored in the compressed large elastic plate 6 and the folded small elastic plates 5 is released, driving the guide plate 4 to begin its reset movement, attempting to return to its initial figure-eight outward expansion position.
[0045] This periodic rotation and oscillation process causes the edge of the guide plate 4 to act like a scraper, continuously sweeping and guiding the dust particles deposited on the annular support surface of the bottom tube 2 and the surrounding area into the preset dust collection groove 21. This achieves a self-cleaning function on the support surface and effectively prevents dust accumulation from affecting the flexibility of the rotating shaft 3 and the long-term reliability of the device.
[0046] Also includes:
[0047] Dust collection trough 21 is opened on the annular support surface of the bottom pipe 2, and forms a slope surface where dust can easily be removed from the air inlet pipe 1 under the action of gravity.
[0048] When the guide plate 4 rotates periodically under the action of wind, its edge continuously scrapes the annular support surface, forcing the deposited dust to collect in the dust collection trough 21 along the slope. The slope structure allows the dust to automatically detach from the air inlet pipe 1 under the action of gravity, completely avoiding dust accumulation that may block the rotating shaft 3 or interfere with the flexible rotation of the guide plate 4, thus achieving self-cleaning without power.
[0049] When the small elastic plate 5 is gradually straightened due to the parallelism of the two guide plates 4, the large elastic plate 6, which is in the same air intake direction as it, gradually straightens.
[0050] When the guide plate 4 of the main air inlet 11 is pushed by the wind to turn into a parallel air intake direction, the large elastic plate 6 in the same direction straightens accordingly. This linkage causes the high-speed airflow to directly impact the rigid plate surface, forcing the airflow to split into multiple high-intensity reverse vortices, greatly improving the kinetic energy dissipation efficiency, significantly suppressing excessive air intake caused by strong winds, and enhancing internal airflow disturbance to prevent particulate matter from settling.
[0051] A retaining ring is coaxially installed on the top surface of the bottom pipe 2 and the air inlet pipe 1, covering the gap between the upper and lower bottom surfaces of the small elastic plate 5 and the bottom pipe 2 and the air inlet pipe 1.
[0052] By covering the seams between the top and bottom surfaces of the small elastic plate 5 and the bottom pipe 2 and the air inlet pipe 1, the baffle ring completely seals off the bypass channel for airflow to bypass the ventilation hole 51, forcing all air intake to strictly pass through the conical hole or pleated structure of the small elastic plate 5, which not only improves the selectivity of the air intake direction, but also prevents dust from entering the rotating mechanism through the gaps.
[0053] The maximum rotation path range of the guide plate 4 does not overlap with the dust collection trough 21;
[0054] The maximum rotation range of the guide plate 4 is limited to prevent it from contacting the dust collection trough 21, ensuring that its scraping action only acts on the effective dust collection area of the annular support surface, avoiding the dust that has fallen into the trough from being stirred up again, and preventing mechanical interference that could cause the guide plate 4 to jam or deform, thus maintaining long-term cleaning reliability.
[0055] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. An ambient air monitoring device, characterized in that, include: The air inlet duct has at least three air inlets on its curved surface; The bottom pipe is set in the inner wall of the air inlet pipe and narrows the air inlet path of the air inlet pipe into an air inlet path with a smaller diameter, and has an annular support surface. The rotating shaft is rotatably mounted on the annular support surface and is circumferentially distributed along the annular path of the annular support surface; A guide plate is set on the rotating shaft with the rotating shaft as the center point. The adjacent guide plates on the air inlet path are extended outward to cover the air inlet to form an air guiding path. Small flexible plates are set at both ends of the adjacent guide plates covering the air inlet and are located on the guide path, with several ventilation holes opened on them. Large elastic plates are spaced between two guide plates with small elastic plates and located on the windproof surface of the air inlet pipe. When the wind enters the air inlet, the guide plate rotates parallel to the air inlet direction and straightens the small elastic plate located on the air guide path, and the pressure is transmitted from the large elastic plate to the two small elastic plates far away from the air inlet to form folds.
2. The ambient air monitoring device of claim 1, wherein, Also includes: The dust collection trough is formed on the annular support surface of the bottom pipe, creating a slope that allows dust to easily detach from the air inlet pipe under gravity.
3. An ambient air monitoring device according to claim 2, wherein, As the small elastic plate gradually straightens due to the gradual parallelism of the two guide plates, the large elastic plate, which is in the same air intake direction as it, also gradually straightens.
4. An ambient air monitoring device according to claim 3, wherein, A retaining ring is coaxially provided on the top surface of the bottom pipe and the air inlet pipe, covering the gap between the upper and lower bottom surfaces of the small elastic plate and the bottom pipe and the air inlet pipe.
5. An ambient air monitoring device according to claim 4, wherein, The maximum rotation path range of the guide plate does not overlap with the dust collection trough.