Indoor air quality monitoring equipment

Abstract

The utility model relates to indoor air quality monitoring equipment. The device comprises a monitoring box, a sucking pump, a sucking pipe, a plurality of gas detection sensors and a chip, a gas bin mounting seat and a plurality of detection gas bins are further arranged in the monitoring box, the gas bin mounting seat comprises a base, a sealing film and a cover plate, a first gas cavity and a second gas cavity are independently formed in the base, and a plurality of mounting positions are arranged on the cover plate. An air exhaust hole, an air supply hole and a positioning screw hole are formed in the mounting position, and the detection air bin comprises a bin body, an upper sealing end, a lower sealing end, an air detection sensor and two needle tubes. The gas bin mounting seat is used for mounting the detection gas bins, the cover plate of the gas bin mounting seat is provided with a plurality of mounting positions, meanwhile, the gas bin detection device is further provided with a plurality of detection gas bins, a user can select and purchase different detection gas bins according to own requirements and then mount the detection gas bins on the gas bin mounting seat, the detection gas bins and the gas bin mounting seat are easy to assemble, and the detection efficiency is improved. Therefore, DIY assembly can be realized, and meanwhile, the detection gas bin can be conveniently replaced in the later period.

Description

Technical Field

[0001] This utility model relates to an air quality monitoring device, and more particularly to an indoor air quality monitoring device. Background Technology

[0002] Air quality monitoring equipment is used to monitor and assess the concentration of pollutants and other related parameters in the air. Through highly integrated sensor technology, it monitors and analyzes various parameters in the air in real time, providing accurate and timely air quality data so that relevant personnel can visually interpret the air quality of their environment. Existing air quality monitoring equipment can typically monitor multiple air quality parameters such as PM2.5, PM10, formaldehyde, TVOC, carbon dioxide, and methane. Application scenarios include indoor environments such as homes, offices, laboratories, hospitals, and mines.

[0003] Most existing air quality monitoring devices operate on similar principles, typically using a miniature air pump to extract gases from the environment. These gases are drawn into a detection chamber, which contains gas sensors designed to detect different gases. The data detected by these sensors is sent to a chip, which processes and stores the data or transmits it to an external terminal device. To avoid sensor interference that could lead to inaccurate data, each detection chamber generally contains only one type of gas sensor. However, different environments require different gas parameters. For example, offices and hospitals typically need to detect PM2.5, PM10, formaldehyde, and TVOC, while environments like mines generally require detection of toxic, harmful, or flammable gases such as carbon monoxide, carbon dioxide, and methane.

[0004] Therefore, air quality monitoring equipment manufacturers need to produce various models of air quality monitoring equipment for different customer groups. The differences between these models may only lie in the types of sensors, but all require dedicated production lines for assembly, and small-batch customers generally do not support customization. Therefore, developing a modular, easy-to-assemble air quality monitoring device that allows customers to choose their own components is particularly important. Summary of the Invention

[0005] This invention provides an indoor air quality monitoring device, which solves the problem that the existing technology cannot support DIY assembly due to its inherent structure.

[0006] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: An indoor air quality monitoring device includes a monitoring box, an air pump, an air extraction pipe, multiple gas detection sensors and a chip. The air pump and the gas detection sensors are electrically connected to the chip. The monitoring box also has a gas chamber mounting base and several detection gas chambers. The gas chamber mounting base includes a base, a sealing film and a cover plate. The base has a first air chamber and a second air chamber independently formed. The base also has a first connector communicating with the first air chamber and a second connector communicating with the second air chamber. Both connectors are connected to the air extraction pipe. The cover plate has several mounting positions for installing the detection gas chambers. Each mounting position has an air extraction hole, an air supply hole and a... The device has two positioning screw holes. The air supply hole and the air extraction hole both penetrate the cover plate and are respectively aligned with the first air chamber and the second air chamber. The sealing film is disposed between the base and the cover plate, so that the air supply hole and the air extraction hole are airtightly isolated from the two air chambers. The detection air chamber includes a chamber body, an upper sealing end, a lower sealing end, a gas detection sensor disposed in the upper sealing end, and two needle tubes penetrating the lower sealing end. The bottom of the chamber body is also provided with a positioning plate that matches the positioning screw holes. The detection air chamber can be fixed to the positioning plate and the positioning screw holes by bolts, so that the detection air chamber is fixed in the mounting position, and the two needle tubes are inserted into the corresponding air extraction hole and air supply hole, while penetrating the sealing film.

[0007] The detection principle of this utility model is as follows: when the air pump is turned on, the air extraction pipe starts to extract air, and the external gas will flow into the first air chamber, the detection air chamber, the second air chamber and the air pump in sequence along the air extraction pipe. After the air pump is turned on for a period of time, it is turned off. At this time, the gas in the detection air chamber is basically replaced by the newly extracted external gas. Then the gas detection sensor starts to detect and transmits the data to the chip.

[0008] The gas chamber mounting base of this utility model is used to install a detection gas chamber. Its cover plate has multiple mounting positions. This utility model also includes various detection gas chambers, each of which can be installed and fixed in the mounting positions. The difference lies in the type of gas detection sensor inside. Users can choose different detection gas chambers according to their needs and then install them on the gas chamber mounting base. The installation method is as follows: First, align the two needle tubes at the bottom of the detection gas chamber with the suction port and the supply port, regardless of orientation. Then, forcefully insert them until the needle tubes penetrate the sealing film. Finally, fix the positioning plate to the positioning screw hole using bolts. This completes the assembly.

[0009] Furthermore, the end of the extraction pipe connected to the extraction pump is the rear end, and a filter head and a drying tube are connected in series between the front end of the extraction pipe and the air chamber mounting base. The filter head is used to filter out large particulate impurities in the air, while the drying tube is used to remove moisture from the air, which helps to extend the service life of the sensor.

[0010] Furthermore, the present invention also includes a temperature and humidity sensor and a barometric pressure sensor exposed to the atmosphere, both of which are electrically connected to the chip to monitor temperature, humidity and barometric pressure values.

[0011] Therefore, this utility model has the following characteristics compared with the prior art: 1. The gas chamber mounting base in this utility model is used to install the detection gas chamber. Its cover plate is provided with multiple mounting positions. At the same time, this utility model is also equipped with a variety of detection gas chambers. The difference lies in the different types of gas detection sensors inside. Users can purchase different detection gas chambers according to their own needs and then install them on the gas chamber mounting base. The assembly of the detection gas chamber and the gas chamber mounting base is simple. After the assembly is completed, the gas path can be connected. Therefore, DIY assembly can be realized, and it is also convenient to replace the detection gas chamber later. Attached Figure Description

[0012] Appendix Figure 1 This is a system diagram of this utility model;

[0013] Appendix Figure 2 This is a schematic diagram of the main internal structure of this utility model;

[0014] Appendix Figure 3 This is a top view of the air chamber mounting base;

[0015] Appendix Figure 4 It is attached Figure 3 Sectional view along axis AA;

[0016] Appendix Figure 5 This is a schematic diagram of the air chamber structure. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Example 1: See Figure 1 , Figure 2 , Figure 3 and Figure 4An indoor air quality monitoring device includes a monitoring box, an air pump 10, an air extraction pipe 20, multiple gas detection sensors 30, and a chip. The air pump and gas detection sensors are electrically connected to the chip. The monitoring box also includes a gas chamber mounting base 40 and several detection gas chambers 50. The gas chamber mounting base includes a base 410, a sealing film 420, and a cover plate 430. The base and cover plate are fixed together by bolts. The base has a first air chamber 411 and a second air chamber 412 independently formed. The base also has a first connector 413 communicating with the first air chamber and a second connector 414 communicating with the second air chamber. Both connectors are connected to the air extraction pipe. The cover plate has four mounting positions 431 for installing the detection gas chambers. Each mounting position has an air extraction hole 432, an air supply hole 433, and two positioning screw holes 434. The air supply hole and air extraction hole penetrate the cover plate and are respectively aligned with the first and second air chambers. The sealing film is located between the base and the cover plate, ensuring that the air supply hole and air extraction hole are airtightly isolated from the two air chambers. Figure 5 The detection chamber includes a chamber body 51, an upper sealing end 52, a lower sealing end 53, a gas detection sensor located in the upper sealing end, and two needle tubes 54 penetrating the lower sealing end. Both the upper and lower sealing ends are glue-filled structures with excellent sealing performance. The bottom of the chamber body is also provided with a positioning plate 55 that matches the positioning screw hole. The detection chamber can be fixed to the positioning plate and the positioning screw hole by bolts, so that the detection chamber is fixed in the installation position and the two needle tubes are inserted into the corresponding air extraction hole and air supply hole, while penetrating the sealing film.

[0020] The detection principle of this embodiment is as follows: the air pump is turned on, the air extraction pipe starts to extract air, and the external gas will flow into the first air chamber, the detection air chamber, the second air chamber and the air pump in sequence along the air extraction pipe. After the air pump is turned on for a period of time, it is turned off. At this time, the gas in the detection air chamber is basically replaced by the newly extracted external gas. Then the gas detection sensor starts to detect and transmits the data to the chip.

[0021] The gas chamber mounting base in this embodiment is used to install the detection gas chamber. Its cover plate has multiple mounting positions. This embodiment also includes various detection gas chambers, each of which can be installed and fixed in the mounting positions. The difference lies in the type of gas detection sensor inside. Users can select different detection gas chambers according to their needs and then install them on the gas chamber mounting base. The installation method is as follows: First, align the two needle tubes at the bottom of the detection gas chamber with the suction port and the supply port, regardless of orientation. Then, forcefully insert them until the needle tubes penetrate the sealing film. Finally, fix the positioning plate to the positioning screw hole using bolts. This completes the assembly.

[0022] See Figure 2The end of the extraction pipe connected to the extraction pump is the rear end. A filter head 60 and a drying tube 70 are connected in series between the front end of the extraction pipe and the air chamber mounting base. The filter head removes large particulate impurities from the air, while the drying tube removes moisture from the air, thus extending the sensor's lifespan.

[0023] See Figure 1 This embodiment also includes a temperature and humidity sensor and a barometric pressure sensor exposed to the atmosphere, both of which are electrically connected to the chip to monitor temperature, humidity and barometric pressure values.

[0024] Gas detection sensors include one or more of the following: PM2.5 sensor, PM10 sensor, formaldehyde concentration sensor, TVOC concentration sensor, carbon monoxide concentration sensor, carbon dioxide concentration sensor, and methane concentration sensor.

[0025] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. An indoor air quality monitoring device, comprising a monitoring box, an air pump, an air extraction pipe, multiple gas detection sensors, and a chip, wherein the air pump and the gas detection sensors are all electrically connected to the chip, characterized in that: The monitoring box also includes a gas chamber mounting base and several detection gas chambers. The gas chamber mounting base includes a base, a sealing film, and a cover plate. The base independently forms a first gas chamber and a second gas chamber. The base also has a first connector communicating with the first gas chamber and a second connector communicating with the second gas chamber. Both connectors are connected to the extraction pipe. The cover plate has several mounting positions for installing the detection gas chambers. Each mounting position has an extraction hole, an air supply hole, and at least two positioning screw holes. The air supply hole and the extraction hole both penetrate the cover plate and are respectively aligned with the first gas chamber and the second gas chamber. The sealing film is disposed between the base and the cover plate, so that the air supply port, the air extraction port and the two air chambers are airtightly isolated from each other. The detection gas chamber includes a chamber body, an upper sealing end, a lower sealing end, a gas detection sensor disposed in the upper sealing end and two needle tubes penetrating the lower sealing end. The bottom of the chamber body is also provided with a positioning plate that matches the positioning screw hole. The detection gas chamber can be fixed to the positioning plate and the positioning screw hole by bolts, so that the detection gas chamber is fixed in the mounting position and the two needle tubes are inserted into the corresponding air extraction port and air supply port, while penetrating the sealing film.

2. The indoor air quality monitoring device according to claim 1, characterized in that: The end of the air extraction pipe connected to the air extraction pump is the rear end, and a filter head and a drying pipe are connected in series between the front end of the air extraction pipe and the air chamber mounting base.

3. The indoor air quality monitoring device according to claim 1 or 2, characterized in that: It also includes a temperature and humidity sensor and a barometric pressure sensor exposed to the atmosphere, both of which are electrically connected to the chip.

4. The indoor air quality monitoring device according to claim 1, characterized in that: The gas detection sensor includes one or more of the following: PM2.5 sensor, PM10 sensor, formaldehyde concentration sensor, TVOC concentration sensor, carbon monoxide concentration sensor, carbon dioxide concentration sensor, and methane concentration sensor.

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