Air quality sensor

Abstract

The utility model discloses an air quality sensor, which comprises a base, the bottom of the base is fixedly connected with a plurality of support rods, the surface of the base is respectively provided with a wire hole and a plurality of mounting holes, a sensor body is arranged above the base, the bottom of the sensor body is fixedly connected with a plurality of mounting feet, and the mounting feet are fixedly connected with the support rods. External threads are arranged on the surfaces of the mounting feet, the mounting feet are in threaded connection with first nuts matched with the mounting feet, a cover body is mounted on the base, and a sampling mechanism is arranged on the cover body. According to the air quality detection device, active sampling can be realized, compared with natural flow depending on airflow, the time required for sampling an air sample is greatly shortened, the sampling efficiency is improved, the large-scale air quality detection requirement can be met, the sampling range is large, the sensor body can be in full contact with air, and the accuracy of a detection result is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of air quality sensor technology, and in particular relates to an air quality sensor. Background Technology

[0002] An air quality sensor is a device used to monitor and measure the concentration of pollutants in the air. It can be widely used in indoor and outdoor environmental monitoring, industrial production, smart homes, and environmental protection.

[0003] There are many types of air quality sensors on the market. For example, an air quality sensor with publication number CN219417404U is disclosed on the Chinese Patent Network. This air quality sensor can be used for air quality detection, but it has some defects and shortcomings that need to be improved: (1) Most of the existing air quality sensors lack an active sampling structure and can only rely on the natural flow of air to sample the air. It often takes a long time to collect enough air samples, making the entire air quality detection process time-consuming and difficult to meet the needs of large-scale air quality detection; (2) Due to the structural design, some existing air quality sensors have a small sampling range and cannot cover all angles around the sensor, resulting in insufficient contact between the sensor element and the air, which in turn reduces the accuracy of the detection results. Therefore, the air quality sensor provided by this utility model is of great significance in addressing the above problems. Utility Model Content

[0004] This invention provides an air quality sensor that enables active sampling via a sampling mechanism. Compared to relying on natural airflow, this significantly reduces the time required for air sample collection, increases sampling efficiency, and effectively meets the needs of large-scale air quality testing. Multiple sampling tubes draw air samples from various angles around the sensor into the sampling chamber, effectively expanding the sensor's sampling range. Furthermore, multiple air outlets allow the sampled air to be blown towards the sensor body from various angles, ensuring full contact between the sensor body and the air, thus improving the accuracy of the detection results. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] An air quality sensor of this utility model includes a base, a plurality of support rods fixedly connected to the bottom of the base, and wire holes and a plurality of mounting holes respectively opened on the surface of the base. A sensor body is arranged on the top of the base, and a plurality of mounting feet are fixedly connected to the bottom of the sensor body. The surface of the mounting feet is provided with external threads and a first nut that mates with them is threadedly connected. A cover is installed on the base, and a sampling mechanism is arranged on the cover.

[0007] The sampling mechanism includes a sampling chamber, a micro air pump, an air guiding chamber, and a diversion chamber. The sampling chamber and the micro air pump are respectively installed on the outer wall and top of the enclosure. The sampling chamber is annular and has a hollow interior. Several sampling tubes are fixedly connected to the outer wall of the sampling chamber. The micro air pump is equipped with an intake pipe and an exhaust pipe. The other end of the intake pipe passes through the top of the sampling chamber and communicates with the inner cavity of the sampling chamber. The air guiding chamber and the diversion chamber are respectively installed on the top and inner wall of the inner cavity of the enclosure. The other end of the exhaust pipe passes through the top of the enclosure and communicates with the inner cavity of the air guiding chamber. The diversion chamber is annular and has a hollow interior. Several air outlets are opened on the inner wall of the diversion chamber. Air guiding pipes are fixedly connected to both sides of the air guiding chamber. One end of the air guiding pipe communicates with the inner cavity of the air guiding chamber, and the other end passes through the top of the diversion chamber and communicates with the inner cavity of the diversion chamber.

[0008] Furthermore, the wire hole is located at the center of the base, and the mounting holes are arranged in a circular array around the wire hole. The number of mounting feet is the same as the number of mounting holes, and their diameters correspond to the diameters of the mounting holes. The center of each mounting foot corresponds one-to-one with the center of each mounting hole.

[0009] Furthermore, the top of the base is fixedly connected with several positioning posts. The surface of each positioning post is provided with external threads and is threadedly connected with a second nut that matches it. The cover is cylindrical, with its bottom edge protruding outward and having several positioning holes. The number of positioning holes is the same as the number of positioning posts, and the diameter of the holes corresponds to the diameter of the positioning posts. The center of each positioning hole corresponds one-to-one with the center of each positioning post.

[0010] Furthermore, the sampling tubes are distributed in an equidistant ring along the circumference of the sampling chamber, with one end of the tube connected to the inner cavity of the sampling chamber, and the end of the sampling tube is trumpet-shaped.

[0011] Furthermore, the air outlets are divided into several groups and are equidistantly linearly distributed along the circumference of the diversion chamber, and each group of air outlets is equidistantly linearly distributed along the height of the diversion chamber.

[0012] Furthermore, a number of positioning cylinders are fixedly connected to the top of the cover, and a top cover is provided above the cover. The top of the top cover is arched, and a number of insertion rods are fixedly connected to the bottom of the top cover. The number of insertion rods is the same as that of the positioning cylinders, and their rod diameters correspond to the inner diameters of the positioning cylinders. The center of each insertion rod corresponds one-to-one with the center of each positioning cylinder.

[0013] The present invention has the following advantages over the prior art:

[0014] (1) When using an air quality sensor, the sampling mechanism can achieve active sampling. Compared with relying on the natural flow of air, it greatly shortens the time required to sample air samples and speeds up the sampling efficiency, thereby effectively meeting the needs of large-scale air quality detection.

[0015] (2) When the air quality sensor of this utility model is used, air samples from various angles around the sensor can be sucked into the sampling chamber through multiple sampling tubes, thereby effectively expanding the sampling range of the sensor. Furthermore, the sampled air samples can be blown towards the sensor body from various angles through multiple air outlets, so that the sensor body can fully contact the air, thereby effectively improving the accuracy of the detection results.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an air quality sensor according to the present invention;

[0019] Figure 2 This is a schematic diagram of the base structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the sensor body in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the cover in this utility model;

[0022] Figure 5 This is a front sectional view of the cover body in this utility model;

[0023] Figure 6 This is a schematic diagram of the sampling mechanism in this utility model;

[0024] Figure 7 This is a schematic diagram of the top cover in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Base; 2. Support rod; 3. Wire hole; 4. Mounting hole; 5. Sensor body; 6. Mounting foot; 7. First nut; 8. Cover; 9. Sampling chamber; 10. Miniature air pump; 11. Air guide chamber; 12. Diversion chamber; 13. Sampling tube; 14. Inhalation tube; 15. Exhaust tube; 16. Air outlet; 17. Air guide tube; 18. Positioning post; 19. Second nut; 20. Positioning hole; 21. Positioning cylinder; 22. Top cover; 23. Insert rod. Detailed Implementation

[0027] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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 this utility model.

[0029] Please see Figure 1-7As shown, an air quality sensor of this utility model includes a base 1, with several support rods 2 fixedly connected to the bottom of the base 1. The surface of the base 1 is provided with wire holes 3 and several mounting holes 4. A sensor body 5 is provided on the top of the base 1. The sensor body 5 can be an existing product on the market, such as a gas sensor with model GMV11 / GMV12. The sensor body 5 integrates a sampling unit, a detection unit, a signal processing unit, etc. When air comes into contact with the sensor body 5, it can collect specific pollutants in the air, detect the concentration of the corresponding pollutants, and convert them into analog signals for output. Then, the output analog signals can be converted into digital signals and processed, so that they can be transmitted to a remote platform for viewing via wireless communication. Several mounting feet 6 are fixedly connected to the bottom of the sensor body 5. The surface of the mounting feet 6 is provided with external threads, and a first nut 7 that mates with it is threadedly connected. A cover 8 is installed on the base 1. The cover 8 covers the outside of the sensor body 5 and can protect it from damage caused by external impact. A sampling mechanism is provided on the cover 8.

[0030] The sampling mechanism includes a sampling chamber 9, a micro air pump 10, an air guide chamber 11, and a diversion chamber 12. The sampling chamber 9 and the micro air pump 10 are respectively installed on the outer wall and top of the cover 8. The sampling chamber 9 is annular and has a hollow interior. Several sampling tubes 13 are fixedly connected to the outer wall of the sampling chamber 9. The micro air pump 10 is equipped with an intake pipe 14 and an exhaust pipe 15. The other end of the intake pipe 14 passes through the top of the sampling chamber 9 and communicates with the inner cavity of the sampling chamber 9. The air guide chamber 11 and the diversion chamber 12 are respectively installed on the top and inner wall of the inner cavity of the cover 8. The other end of the exhaust pipe 15 passes through the top of the cover 8 and communicates with the inner cavity of the air guide chamber 11. The diversion chamber 12 is annular and has a hollow interior. Several air outlets are opened on the inner wall of the diversion chamber 12. Both sides of the air guide chamber 11 are fixedly connected to the air guide tubes 17. One end of the air guide tube 17 is connected to the inner cavity of the air guide chamber 11, and the other end of the air guide tube 17 passes through the top of the diversion chamber 12 and is connected to the inner cavity of the diversion chamber 12. By driving the micro air pump 10, the air to be tested can be drawn into the sampling chamber 9 using negative pressure and introduced into the air guide chamber 11 through the exhaust pipe 15. After the air enters the air guide chamber 11, it can be introduced into the diversion chamber 12 through the air guide tube 17 and discharged through each air outlet 16, so that the air sample comes into contact with the sensor body 5, thereby realizing active sampling. Compared with relying on the natural flow of air, it greatly shortens the time required to sample the air sample and speeds up the sampling efficiency, thus effectively meeting the needs of large-scale air quality detection.

[0031] The wire hole 3 is located at the center of the base 1. The mounting holes 4 are arranged in a circular array around the wire hole 3. The number of mounting feet 6 is the same as the number of mounting holes 4, and their diameters correspond to the diameters of the mounting holes 4. The center of each mounting foot 6 corresponds one-to-one with the center of each mounting hole 4. Each mounting foot 6 with a first nut 7 connected by a thread can be aligned and pass through the corresponding mounting hole 4. At this time, the first nut 7 can fit against the top surface of the base 1. Thus, the sensor body 5 can be fixed on the base 1 through the mutual cooperation between the mounting feet 6, the mounting holes 4, and the first nut 7. At the same time, the height of the sensor body 5 on the mounting foot 6 can be controlled by turning the first nut 7, so as to adjust the installation height of the sensor body 5 as needed. The sensor body 5 can be removed from the base 1 by pulling the mounting foot 6 out of the mounting hole 4, so as to maintain and replace the sensor body 5.

[0032] The base 1 has several positioning pins 18 fixedly connected to its top. The surface of each positioning pin 18 is provided with external threads, and a second nut 19 is threadedly connected to it. The cover 8 is cylindrical, with several positioning holes 20 protruding outward at its bottom edge. The number of positioning holes 20 is the same as the number of positioning pins 18, and their diameters correspond to the diameters of the positioning pins 18. The center of each positioning hole 20 corresponds one-to-one with the center of each positioning pin 18. When the cover 8 is installed on the base 1, each positioning pin 18 can be aligned and pass through the corresponding positioning hole 20. At this time, the second nut 19 is threaded onto each positioning pin 18. The cover 8 can be positioned and fixed by the mutual cooperation between the positioning pins 18, positioning holes 20, and second nuts 19 to prevent the cover 8 from loosening after installation. The cover 8 can be removed from the base 1 by unscrewing the second nut 19 so that the relevant components inside the cover 8 can be maintained or replaced.

[0033] The sampling tubes 13 are distributed in an equidistant ring along the circumference of the sampling chamber 9. One end of the tube is connected to the inner cavity of the sampling chamber 9, and the end of the sampling tube 13 is flared. Through multiple sampling tubes 13, air samples from various angles around the sensor can be drawn into the sampling chamber 9, thereby effectively expanding the sampling range of the sensor.

[0034] The air outlets 16 are divided into several groups and are distributed linearly at equal intervals along the circumference of the diversion chamber 12. Each group of air outlets 16 is also distributed linearly at equal intervals along the height of the diversion chamber 12. Through multiple air outlets 16, the sampled air can be blown towards the sensor body 5 from various angles, so that the sensor body 5 can fully contact the air, thereby effectively improving the accuracy of the detection results.

[0035] The top of the cover 8 is fixedly connected to several positioning cylinders 21, and a top cover 22 is provided on the top of the cover 8. The top of the top cover 22 is arched, and the bottom of the top cover 22 is fixedly connected to several insertion rods 23. The number of insertion rods 23 is the same as that of the positioning cylinders 21, and their rod diameter is equal to the inner diameter of the positioning cylinder 21. The center of each insertion rod 23 corresponds one-to-one with the center of each positioning cylinder 21. Each insertion rod 23 can be aligned and inserted into the corresponding positioning cylinder 21 so that the top cover 22 can be fixedly installed on the top of the cover 8 through the mutual cooperation between the insertion rods 23 and the positioning cylinders 21. The top cover 22 can provide dustproof and waterproof protection for the top of the micro air pump 10 and the cover 8 to prevent dust and water from falling on the top of the micro air pump 10 and the cover 8 and affecting their performance and service life.

[0036] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0037] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all connected to the external main controller and 220V mains power. The main controller is a conventional known device that can play a control role.

[0038] The working principle of this utility model is as follows:

[0039] In use, this invention utilizes a micro air pump 10 to draw air into the sampling chamber 9 using negative pressure, and then guides it into the air guide chamber 11 through the exhaust pipe 15. After entering the air guide chamber 11, the air is guided into the diversion chamber 12 through the air guide pipe 17 and discharged through various air outlets 16, allowing the air sample to come into contact with the sensor body 5, thus enabling active sampling. Compared to relying on natural airflow, this significantly shortens the time required for air sample collection and accelerates sampling efficiency, effectively meeting the needs of large-scale air quality testing. Multiple sampling tubes 13 can draw air samples from various angles around the sensor into the sampling chamber 9, effectively expanding the sensor's sampling range. Furthermore, multiple air outlets 16 can blow the sampled air towards the sensor body 5 from various angles, ensuring full contact between the sensor body 5 and the air, thereby effectively improving the accuracy of the detection results.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An air quality sensor, characterized in that, The device includes a base, with several support rods fixedly connected to the bottom of the base, and wire holes and several mounting holes respectively opened on the surface of the base. A sensor body is arranged on the top of the base, and several mounting feet are fixedly connected to the bottom of the sensor body. The surface of the mounting feet is provided with external threads, and a first nut that mates with the feet is threadedly connected to them. A cover is installed on the base, and a sampling mechanism is arranged on the cover. The sampling mechanism includes a sampling chamber, a micro air pump, an air guiding chamber, and a diversion chamber. The sampling chamber and the micro air pump are respectively installed on the outer wall and top of the enclosure. The sampling chamber is annular and has a hollow interior. Several sampling tubes are fixedly connected to the outer wall of the sampling chamber. The micro air pump is equipped with an intake pipe and an exhaust pipe. The other end of the intake pipe passes through the top of the sampling chamber and communicates with the inner cavity of the sampling chamber. The air guiding chamber and the diversion chamber are respectively installed on the top and inner wall of the inner cavity of the enclosure. The other end of the exhaust pipe passes through the top of the enclosure and communicates with the inner cavity of the air guiding chamber. The diversion chamber is annular and has a hollow interior. Several air outlets are opened on the inner wall of the diversion chamber. Air guiding pipes are fixedly connected to both sides of the air guiding chamber. One end of the air guiding pipe communicates with the inner cavity of the air guiding chamber, and the other end passes through the top of the diversion chamber and communicates with the inner cavity of the diversion chamber.

2. An air quality sensor according to claim 1, characterized in that, The wire hole is located at the center of the base. The mounting holes are arranged in a circular array around the wire hole. The number of mounting feet is the same as the number of mounting holes, and their diameters correspond to the diameters of the mounting holes. The center of each mounting foot corresponds one-to-one with the center of each mounting hole.

3. An air quality sensor according to claim 1, characterized in that, The top of the base is fixedly connected with several positioning posts. The surface of each positioning post is provided with external threads and is threaded with a second nut that matches it. The cover is cylindrical and has several positioning holes protruding outward at its bottom edge. The number of positioning holes is the same as the number of positioning posts, and the diameter of the holes corresponds to the diameter of the positioning posts. The center of each positioning hole corresponds one-to-one with the center of each positioning post.

4. An air quality sensor according to claim 1, characterized in that, The sampling tubes are distributed in an equidistant ring along the circumference of the sampling chamber, with one end of the tube connected to the inner cavity of the sampling chamber, and the end of the sampling tube is trumpet-shaped.

5. An air quality sensor according to claim 1, characterized in that, The air outlets are divided into several groups and are distributed linearly at equal intervals along the circumference of the diversion chamber, and each group of air outlets is distributed linearly at equal intervals along the height of the diversion chamber.

6. An air quality sensor according to claim 1, characterized in that, The top of the cover is fixedly connected to several positioning cylinders, and a top cover is provided on the top of the cover. The top of the top cover is arched, and the bottom of the top cover is fixedly connected to several insert rods. The number of insert rods is the same as that of the positioning cylinders, and the diameter of the rods corresponds to the inner diameter of the positioning cylinders. The center of each insert rod corresponds one-to-one with the center of each positioning cylinder.

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