Air detection box

Abstract

The utility model relates to an air detection box, which comprises a box body, a PCB (printed circuit board) is arranged in the box body, a sensor assembly is arranged on the PCB, the air detection box is characterized in that the box body comprises a bottom plate, a side plate and a cover plate, the bottom plate and the cover plate respectively cover the front side and the rear side of the side plate, a plurality of air inlets are formed in the side plate in a penetrating manner, and the sensor assembly is arranged on the side plate. An air outlet gap is formed between the edge of the cover plate and the side plate, and when the air-conditioner is used, air enters from the air inlet of the side plate and is exhausted from the air outlet gap. According to the utility model, the box body structure and the air circulation path are optimized, the airflow interference is avoided, the formation of eddy current and dead angles is reduced, the uniform distribution of air in the detection box is ensured, and the detection precision of the sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air detection equipment, in particular to an air detection box. Background Art

[0002] As people's attention to indoor and outdoor air quality continues to grow, a variety of air monitoring devices have emerged on the market to effectively monitor air quality. Among them, air monitoring kits are widely popular due to their portability and versatility. Air monitoring kits typically integrate multiple sensors to measure various indicators, including particulate matter (PM2.5 / PM10), volatile organic compounds (VOCs), carbon dioxide (CO2), formaldehyde, temperature, and humidity.

[0003] Although the existing air detection boxes have met the market demand to a certain extent, there are still some problems in actual use, especially the low detection accuracy and efficiency caused by the unreasonable design of the air circulation path. Most of the existing air detection boxes have several air vents on the side for air intake and exhaust. However, this design is likely to lead to a restricted air circulation path in actual use, especially when the detection box is placed in a corner or a small space, the air circulation is poor, affecting the accuracy of the detection results. In addition, since there is only one air vent on one side, the air flow direction in the detection box is single, which easily forms vortices or dead corners, resulting in the air in some areas failing to fully contact the sensor, affecting the detection accuracy. Moreover, because the PM2.5 sensor in the air detection box is usually equipped with a fan to actively promote air flow to ensure that enough air samples pass through the sensor. However, the design of the single-sided air vent is prone to airflow interference during the intake and exhaust process, affecting the normal operation of the sensor, and thus affecting the accuracy of the detection results. Therefore, in response to the above technical problems, the present application makes improvements. Utility Model Content

[0004] The utility model provides an air detection box, which optimizes the air circulation path, improves detection accuracy and efficiency, and solves the above-mentioned problems existing in the use process of the prior art.

[0005] The technical solution of the present utility model is implemented as follows: an air detection box includes a box body, a PCB board is provided in the box body, a sensor assembly is provided on the PCB board, the box body includes a bottom plate, a side plate and a cover plate, the bottom plate and the cover plate are respectively covered on the front and back sides of the side plate, a plurality of air inlets are opened through the side plate, and an air outlet gap is provided between the edge of the cover plate and the side plate.

[0006] Preferably, a panel is integrally formed on the side panel, an air outlet communicating with the air outlet gap is provided on the panel, and the PCB board is located between the panel and the bottom plate.

[0007] Preferably, a support slot is provided on the panel, and the support slot extends through to the air outlet. An annular support strip for inserting into the support slot is integrally formed on the cover plate, and a plurality of plug posts are integrally formed on the annular support strip. The plug posts are provided with self-tapping holes, and a socket for inserting the plug posts is provided on the support slot of the panel. A screw hole is provided through the bottom of the socket of the panel, and the edge of the cover plate does not contact the side panel.

[0008] Preferably, a plurality of threaded connection sleeves are integrally formed on the side of the panel facing the base plate, and a perforated column corresponding to the threaded connection sleeve is provided on the base plate, and a screw hole is opened through the perforated column.

[0009] Preferably, a support column is provided on a side of the bottom plate facing the PCB board, a second self-tapping hole is formed on the support column, and a fixing opening corresponding to the second self-tapping hole is formed on the PCB board.

[0010] Preferably, the sensor assembly includes a PM2.5 sensor, a carbon dioxide sensor, a formaldehyde sensor, a VOC sensor and a temperature and humidity sensor, and the PM2.5 sensor is located directly below the air outlet.

[0011] Preferably, the bottom plate is provided with two hanging openings which are arranged symmetrically on the left and right, and the bottom plate is also provided with anti-slip protrusions for placing the table top.

[0012] In summary, the beneficial effects of the present invention are:

[0013] 1. This utility model provides air inlets on the side panels and an air outlet gap between the cover and the side panels, allowing air to enter through the air inlets on the side panels and exit through the air outlet gap. This design optimizes the box structure and air flow path, avoids airflow interference, reduces the formation of eddies and dead corners, ensures even air distribution within the detection box, and improves the sensor's detection accuracy.

[0014] 2. The PM2.5 sensor is set just below the air outlet. The fan of the PM2.5 sensor actively promotes air flow to ensure that sufficient air samples pass through the sensor, thereby improving the accuracy and response speed of PM2.5 detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is the main view of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction;

[0019] Figure 4 This is an exploded schematic diagram of the first structure of the utility model;

[0020] Figure 5 This is an exploded schematic diagram of the second structure of the present invention.

[0021] In the figure: 1. Box body; 11. Air outlet gap; 2. Bottom plate; 21. Perforated column; 22. Screw hole; 23. Support column; 24. Second self-tapping hole; 25. Hanging port; 26. Anti-slip protrusion; 3. Side panel; 31. Air inlet; 32. Panel; 33. Air outlet; 34. Support slot; 35. Socket; 36. Screw hole; 37. Threaded connection sleeve; 4. Cover; 41. Ring support bar; 42. Insert column; 43. Self-tapping hole; 5. PCB board; 51. Fixing port; 61. PM2.5 sensor; 62. Carbon dioxide sensor; 63. Formaldehyde sensor; 64. VOC sensor; 65. Temperature and humidity sensor; 71. External power interface; 72. 485 communication port; 73. WIFI module. DETAILED DESCRIPTION

[0022] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example:

[0024] like Figures 1 to 5As shown, the utility model discloses an air detection box, including a box body 1, a PCB board 5 is provided in the box body 1, and a sensor assembly is provided on the PCB board 5. In this embodiment, the sensor assembly includes a PM2.5 sensor 61, a carbon dioxide sensor 62, a formaldehyde sensor 63, a VOC sensor 64 and a temperature and humidity sensor 65. It should be noted that the type and quantity of sensors can be set according to specific needs. Since the structure, connection method and operation logic of the PCB board 5 and these sensor assemblies are all existing technologies, they will not be described in detail here. In this embodiment, the box body 1 is a cubic structure. Specifically, the box body 1 includes a bottom plate 2, a side plate 3 and a cover plate 4. The bottom plate 2 and the cover plate 4 are respectively covered on the front and back sides of the side plate 3. Several air inlets 31 are opened on the four sides of the side plate 3, and an air outlet gap 11 is provided between the edge of the cover plate 4 and the side plate 3. Compared with directly opening a hole for air outlet on the cover plate 4, the structure will be more simple and beautiful.

[0025] Furthermore, a panel 32 is integrally formed on the side panel 3. This panel 32 is provided with an air outlet 33 communicating with the air outlet gap 11. The PCB board 5 is located between the panel 32 and the bottom plate 2. The panel 32 further protects the electrical components on the PCB board 5. The PM2.5 sensor 61 is located directly below the air outlet 33. The PM2.5 sensor 61 is equipped with a fan that blows air toward the air outlet 33. During operation, the fan actively promotes air flow, allowing air to enter through the air inlet 31 and then exit the air outlet gap 11 through the air outlet 33. This design optimizes the structure of the box body 1 and the air flow path, avoiding airflow interference, reducing the formation of vortices and dead spots, ensuring even distribution of air within the detection box, and improving the sensor's detection accuracy.

[0026] The specific structure of the cover plate 4 being fixed on the side plate 3 and leaving the air outlet gap 11 is as follows: a support slot 34 is provided on the panel 32, and the support slot 34 extends through the air outlet 33, and the cover plate 4 is integrally formed with an annular support bar 41 for inserting into the support slot 34, and the cover plate 4 is integrally formed with a plurality of plug posts 42 on the annular support bar 41, and the plug posts 42 are provided with self-drilling holes 43, and the panel 32 is provided with a hole for supplying air to the support slot 34. The plug post 42 is inserted into the socket 35, and the panel 32 is provided with a screw hole 36 at the bottom of the socket 35. Therefore, when the annular support strip 41 on the cover plate 4 is inserted into the support groove 34 and the plug post 42 is inserted into the socket 35, the self-tapping screw can be passed through the screw hole 36 and then threaded into the self-tapping hole 43, thereby fixing the cover plate 4 to the panel 32 of the side plate 3. In this structure, the edge of the cover plate 4 does not contact the side plate 3, thereby forming an air outlet gap 11.

[0027] The specific structure for fixing the bottom plate 2 and the side plate 3 is as follows: a plurality of threaded connection sleeves 37 are integrally formed on the side of the panel 32 facing the bottom plate 2, and a perforated column 21 corresponding to the threaded connection sleeve 37 is provided on the bottom plate 2, and a screw hole 22 is opened through the perforated column 21. When the bottom plate 2 and the side plate 3 are covered, the perforated column 21 and the threaded connection sleeve 37 are abutted against each other, so that the bottom plate 2 and the panel 32 on the side plate 3 can be fixed together by passing the screw through the screw hole 22 and being threadedly connected to the threaded connection sleeve 37.

[0028] The specific structure for fixing the PCB board 5 to the base plate 2 is as follows: a support column 23 is provided on the side of the base plate 2 facing the PCB board 5, and a second self-tapping hole 24 is formed in the support column 23. The PCB board 5 is provided with a fixing hole 51 corresponding to the second self-tapping hole 24. Similarly, the PCB board 5 can be fixed to the base plate 2 by passing a self-tapping screw through the fixing hole 51 and threading it into the second self-tapping hole 24.

[0029] Among them, two hanging openings 25 are arranged symmetrically on the left and right on the bottom plate 2. The setting of the hanging openings 25 enables the utility model to be hung on nails on the wall. In addition, anti-slip protrusions 26 for tabletop placement are also provided on the bottom plate 2. When the utility model is placed on a flat surface, the setting of the anti-slip protrusions 26 is used to improve the stability of the placement of the utility model.

[0030] In this embodiment, the side panel 3 is provided with an external power interface 71 electrically connected to the PCB board 5, which is used to connect to an external power supply for power supply. The bottom plate 2 is provided with a 485 communication port 72 electrically connected to the PCB board 5. The 485 communication port 72 is used to enable the device to communicate with other devices or control systems by wire, so as to be easily integrated into the existing automation system and realize real-time data transmission and remote monitoring. In addition, the PCB board 5 is also provided with a WIFI module 73 to support wireless communication. Users can remotely view and manage detection data through devices such as smart phones and tablet computers, thereby improving the convenience and intelligence of use.

[0031] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air detection box, comprising a box body, a PCB board disposed in the box body, and a sensor assembly disposed on the PCB board, characterized in that: The box body includes a bottom plate, side plates and a cover plate. The bottom plate and the cover plate are respectively covered on the front and rear sides of the side plates. A plurality of air inlets are opened through the side plates. There is an air outlet gap between the edge of the cover plate and the side plates.

2. The air detection box according to claim 1, characterized in that: A panel is integrally formed on the side panel. An air outlet communicating with the air outlet gap is provided on the panel. The PCB board is located between the panel and the bottom plate.

3. The air detection box according to claim 2, characterized in that: A support slot is provided on the panel, and the support slot extends through to the air outlet. An annular support strip for inserting into the support slot is integrally formed on the cover plate. A plurality of plug posts are integrally formed on the annular support strip on the cover plate, and self-tapping holes are provided on the plug posts. A socket for inserting the plug posts is provided on the support slot of the panel, and a screw hole is provided through the bottom of the socket of the panel. The edge of the cover plate does not contact the side panel.

4. The air detection box according to claim 2, characterized in that: A plurality of threaded connection sleeves are integrally formed on one side of the panel facing the bottom plate. The bottom plate is provided with perforated columns corresponding to the threaded connection sleeves, and screw holes are penetrated through the perforated columns.

5. The air detection box according to claim 1, characterized in that: A support column is provided on a side of the bottom plate facing the PCB board. A second self-tapping hole is opened on the support column. A fixing opening corresponding to the second self-tapping hole is opened on the PCB board.

6. The air detection box according to claim 2, characterized in that: The sensor assembly includes a PM2.5 sensor, a carbon dioxide sensor, a formaldehyde sensor, a VOC sensor, and a temperature and humidity sensor. The PM2.5 sensor is located directly below the air outlet.

7. The air detection box according to claim 1, characterized in that: The bottom plate is provided with two hanging openings which are arranged symmetrically on the left and right sides, and the bottom plate is also provided with a table top placement anti-slip protrusion.

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