Classroom air detection processing device
Patent Information
- Application Number
- CN202522513979.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0005]因此，本实用新型目的是提供一种教室空气检测处理装置，能够解决现有的教室空气检测处理装置多采用多风扇分别驱动进气、过滤及检测模块的气流传输，结构设计繁琐且占用空间较大，同时多风扇运行增加了设备能耗，不利于长期高效使用，且检测模块所需的过滤前、后空气样本常通过同一气流通道传输，易出现样本混杂的情况，无法对比过滤前后的空气质量差异，难以客观反映空气净化效果及过滤部件的过滤效率的问题
[0012]综上所述，本实用新型包括以下至少一种有益效果：1、通过安装具有上吸下吹气流特性的扇叶、分支抽风口头部的挡风内条，以及对应分支抽风口区域缺失1/4圈的风扇格栅，达到了无需额外动力部件即可完成未过滤空气样本精准采集、缓冲与定向输送的目的，实现了气流的合理分配与高效传输，既保证了分支抽风口对未过滤空气的顺畅抽取，又通过扇叶下方出风气流推动样本输送，简化了气流传输的机械结构，降低了故障发生率，同时格栅的优化设计兼顾了扇叶防护与气流引导功能。
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Figure CN224872615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification and detection equipment technology, and in particular to a classroom air detection and processing device. Background Technology
[0002] Classroom air quality monitoring and treatment devices are air purification and monitoring equipment designed specifically for primary and secondary schools and various teaching venues. They are widely used in enclosed, densely populated classroom environments. The core function is to monitor in real time the concentration of air pollutants such as formaldehyde, PM2.5, CO2, and TVOC, as well as temperature and humidity parameters in the classroom. At the same time, it purifies the air through filtration and adsorption, continuously improving classroom air quality, creating a healthy breathing environment for teachers and students, and helping to protect their health during the teaching process.
[0003] Existing classroom air quality monitoring and processing devices typically employ multiple fans to drive the airflow through the intake, filtration, and detection modules. This results in a cumbersome design, large space requirements, and increased energy consumption, hindering long-term efficient operation. Furthermore, the air samples before and after filtration often pass through the same airflow channel, leading to sample mixing and making it impossible to compare air quality differences before and after filtration. This makes it difficult to objectively reflect the air purification effect and the filtration efficiency of the components. Therefore, we propose a classroom air quality monitoring and processing device to address these issues. Utility Model Content
[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0005] Therefore, the purpose of this utility model is to provide a classroom air detection and processing device that can solve the problems of existing classroom air detection and processing devices that mostly use multiple fans to drive the airflow transmission of the intake, filtration and detection modules separately. The structure design is complicated and occupies a lot of space. At the same time, the operation of multiple fans increases the energy consumption of the equipment, which is not conducive to long-term efficient use. Furthermore, the air samples before and after filtration required by the detection module are often transmitted through the same airflow channel, which easily leads to sample mixing. It is impossible to compare the air quality difference before and after filtration, and it is difficult to objectively reflect the air purification effect and the filtration efficiency of the filter components.
[0006] To solve the above-mentioned technical problems, this utility model provides a classroom air detection and processing device, which adopts the following technical solution: It includes a housing, with an air inlet grille on the front and an air outlet grille on the rear. A partition is fastened inside the housing, forming an air transmission chamber. A main exhaust fan is horizontally arranged inside the air transmission chamber. An air detection module is arranged on the right side of the partition. Filter cotton is arranged between the air transmission chamber and the air inlet grille. The air inlet of the main exhaust fan faces upwards. A branch exhaust port extending to the outside of the filter cotton is integrally formed on one side of the main exhaust fan. The branch exhaust port is connected to the air detection module. The main exhaust fan is the sole air power source.
[0007] Optionally, the main exhaust fan has fan blades inside, the branch exhaust port is located above the main exhaust fan, the main exhaust fan has an air transmission pipe located directly below its exhaust port, and the air transmission pipe extends forward from below the branch exhaust port inside the main exhaust fan. The air transmission pipe is integrally formed with the main exhaust fan and extends to the outside of the main exhaust fan.
[0008] Optionally, the air blowing transmission pipe and the branch exhaust port are connected vertically outside the main exhaust fan, and a transfer chamber is formed at the connection point. The branch exhaust port of the main exhaust fan is horizontally arranged above the fan blades, and a windproof inner strip is provided at the head of the branch exhaust port.
[0009] Optionally, the branch exhaust port is used to draw unfiltered external air from the front of the filter cotton, and the inner baffle strip is used to partially block and guide the drawn air so that some air is transmitted to the transfer chamber. The air blowing transmission pipe is set below the fan blade. When the fan blade rotates clockwise, an airflow is generated at its bottom. This airflow is blown to the transfer chamber through the air blowing transmission pipe, pushing the unfiltered air in the transfer chamber to the air detection module.
[0010] Optionally, a first transmission pipe is integrally formed on the right side of the transfer chamber, which is used to transmit unfiltered air samples from the transfer chamber to the air detection module, and a second transmission pipe is integrally formed on the right side of the middle of the main exhaust fan.
[0011] Optionally, a grille is provided on the outer side of the main exhaust fan, and the upper right area of the fan grille corresponding to the branch exhaust port is missing 1 / 4 circle, and the rear side of the interior of the main exhaust fan is connected to the exhaust grille.
[0012] In summary, this utility model has at least one of the following beneficial effects: 1. By installing fan blades with upward suction and downward blowing airflow characteristics, windproof inner strips at the branch exhaust port, and fan grilles with a missing 1 / 4 ring in the corresponding branch exhaust port area, the purpose of accurately collecting, buffering, and directionally transporting unfiltered air samples can be achieved without additional power components. This realizes reasonable distribution and efficient transmission of airflow, ensuring smooth extraction of unfiltered air from the branch exhaust port, and driving sample transport through the airflow below the fan blades. This simplifies the mechanical structure of airflow transmission, reduces the failure rate, and the optimized design of the grilles takes into account both fan blade protection and airflow guidance functions.
[0013] 2. By installing a single main exhaust fan and its integrated branch exhaust vents, air transmission pipes, transfer chamber, and first and second transmission pipes respectively connected to the detection module, the device achieves the purpose of synchronously driving air purification, unfiltered air sample collection and transportation, and filtered air sample transportation with a single power source. This realizes a high degree of integration and simplification of the device structure, reduces the number of components and space occupied by traditional multi-fan designs, and lowers equipment energy consumption and manufacturing costs. At the same time, the two independent transmission pipes avoid air sample mixing, providing structural assurance for the comparative detection of air quality differences before and after filtration. Attached Figure Description
[0014] 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.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a detailed structural diagram of the main exhaust fan of this utility model; Figure 4 This is a partial cross-sectional view of the main exhaust fan of this utility model.
[0016] Explanation of reference numerals in the attached figures: 1. Shell; 12. Air intake grille; 13. Air exhaust grille; 2. Partition; 21. Air transmission chamber; 3. Main exhaust fan; 31. Branch exhaust vent; 32. Fan blades; 33. Air transmission duct; 34. Transfer chamber; 35. First transmission duct; 36. Second transmission duct; 37. Fan grille; 38. Inner baffle strip; 4. Air detection module; 5. Filter cotton. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.
[0018] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0020] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0021] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.
[0022] Example 1, refer to Figure 1-4 In this embodiment, to address the problems of existing classroom air quality monitoring and processing devices that typically employ multiple fans to drive the airflow of the intake, filtration, and detection modules, resulting in cumbersome structural designs and large space requirements, increased energy consumption due to multiple fans, and unsuitability for long-term efficient use, this invention discloses a classroom air quality monitoring and processing device. Furthermore, the detection module often transmits pre- and post-filtration air samples through the same airflow channel, leading to sample mixing and making it impossible to compare air quality differences before and after filtration, thus failing to objectively reflect the air purification effect and filtration efficiency. The system includes a housing 1, with an air intake grille 12 on the front and an air outlet grille 13 on the rear. A partition 2 is securely installed inside the housing 1, forming an air transmission chamber 21. A main exhaust fan 3 is horizontally positioned within the air transmission chamber 21. An air detection module 4 is located on the right side of the partition 2. A filter cotton 5 is placed between the air transmission chamber 21 and the air intake grille 12. The air inlet of the main exhaust fan 3 faces upwards. A branch exhaust port 31, integrally formed on one side of the main exhaust fan 3, extends to the outside of the filter cotton 5 and is connected to the air detection module 4. The main exhaust fan 3 is the sole air power source, and the filter cotton 5 is positioned within the air... Between the air transmission chamber 21 and the air intake grille 12, as the core component of air purification, it is used to intercept pollutants such as particulate matter in the air. The main exhaust fan 3 is horizontally arranged in the air transmission chamber 21 with its air inlet facing upwards. At the same time, it extends to the outside of the filter cotton 5 through the integrally formed branch exhaust port 31, making the main exhaust fan 3 the only air power source of the device. It can drive the outside air through the air intake grille 12 and the filter cotton 5 into the air transmission chamber 21 to complete the purification and then be discharged from the air outlet grille 13. It can also draw in unfiltered air through the branch exhaust port 31 and deliver it to the air detection module 4, while providing power for the transmission of filtered air to the detection module.
[0023] The main exhaust fan 3 has a fan blade 32 inside. The branch exhaust port 31 is located above the main exhaust fan 3. The main exhaust fan 3 has an air blowing transmission pipe 33 located directly below its exhaust port. The air blowing transmission pipe 33 extends forward from below the branch exhaust port 31 inside the main exhaust fan 3. The air blowing transmission pipe 33 is integrally formed with the main exhaust fan 3 and extends to the outside of the main exhaust fan 3. The branch exhaust port 31 is located above the main exhaust fan 3 and corresponds to the air intake area above the fan blade 32. The air blowing transmission pipe 33 extends forward from below the branch exhaust port 31 inside the main exhaust fan 3 and is integrally formed with the main exhaust fan 3 and extends to the outside. This structural design not only ensures the sealing of the component connection and avoids air leakage, but also, through the positional layout of the branch exhaust port 31 and the air blowing transmission pipe 33, enables the two to form an auxiliary airflow circuit outside the main exhaust fan 3 that is independent of the airflow channel inside the fan.
[0024] The air delivery pipe 33 and the branch exhaust port 31 are connected vertically outside the main exhaust fan 3, and the connection point forms a transfer chamber 34. The branch exhaust port 31 of the main exhaust fan 3 is horizontally set above the fan blade 32, and a windproof inner strip 38 is provided at the head of the branch exhaust port 31. The air delivery pipe 33 and the branch exhaust port 31 are connected vertically outside the main exhaust fan 3, and the connection point forms a transfer chamber 34. This chamber serves as a temporary storage and buffer space for unfiltered air, which can prevent sample disorder caused by direct airflow. The branch exhaust port 31 is horizontally set above the fan blade 32, which corresponds exactly to the air intake area generated by the rotation of the fan blade 32, ensuring efficient extraction of unfiltered air. The windproof inner strip 38 provided at the head of the branch exhaust port 31 partially blocks and guides the extracted airflow, allowing some air to enter the transfer chamber 34, while the remaining air can normally enter the main exhaust fan 3 to participate in the purification process.
[0025] Branch exhaust vent 31 is used to draw unfiltered outside air from the front of filter cotton 5. The inner baffle 38 partially obstructs and guides the drawn air, allowing some air to be transferred to the transfer chamber 34. The air-blowing transmission pipe 33 is positioned below the fan blade 32. When the fan blade 32 rotates clockwise, an airflow is generated at its bottom. This airflow is blown through the air-blowing transmission pipe 33 to the transfer chamber 34, pushing the unfiltered air in the transfer chamber 34 to the air detection module 4. The branch exhaust vent 31 utilizes the negative pressure generated by the rotation of the fan blade 32 to draw unfiltered air from the front of filter cotton 5. The external air is guided by the inner baffle 38, which stably transmits some of the unfiltered air to the transfer chamber 34. When the fan blade 32 rotates clockwise, a positive airflow is generated in the area below it. The air blowing transmission pipe 33 corresponds to the air outlet area below the fan blade 32, which can introduce and blow the airflow into the transfer chamber 34. The unfiltered air stored in the transfer chamber 34 is pushed to the air detection module 4 by the thrust of the airflow. The upward suction and downward blowing airflow characteristics generated by the rotation of the fan blade 32 realize the power transmission of unfiltered air from collection, storage to delivery.
[0026] A first transmission pipe 35 is integrally formed on the right side of the transfer chamber 34. The first transmission pipe 35 is used to transmit unfiltered air samples from the transfer chamber 34 to the air detection module 4. A second transmission pipe 36 is integrally formed on the right side of the main exhaust fan 3. The first transmission pipe 35, integrally formed on the right side of the transfer chamber 34, serves as a dedicated transmission channel for unfiltered air samples. One end of the first transmission pipe 35 is sealed and connected to the transfer chamber 34, and the other end is connected to the air detection module 4. It can deliver unfiltered air samples from the transfer chamber 34, after buffering and stabilization, to the detection module. The second transmission pipe 36, integrally formed on the right side of the main exhaust fan 3, has its air inlet sealed and connected to the air transmission chamber 21. The air inside the air transmission chamber 21 has been purified by the filter cotton 5. Therefore, the second transmission pipe 36 can specifically transmit filtered clean air to the air detection module 4. Through the design of two independent transmission pipes, the separation and transmission of unfiltered air and filtered air samples are achieved.
[0027] The main exhaust fan 3 has a grille on its outer side. The fan grille 37 is missing 1 / 4 of a circle in the upper right area corresponding to the branch exhaust port 31. The rear side of the main exhaust fan 3 is connected to the exhaust grille 13. The grille on the outer side of the main exhaust fan 3 serves the dual purpose of protecting the fan blades 32 and guiding the airflow. The design avoids the air intake interfering with the air intake of the branch exhaust port 31.
[0028] The specific working principle is as follows: After the main exhaust fan 3 starts, its internal fan blades 32 rotate clockwise, forming an airflow dynamic effect of "upward suction and downward blowing": On the one hand, negative pressure is generated above the fan blades 32, which draws air from the air transmission chamber 21 through the upper air inlet of the main exhaust fan 3, causing external air to enter through the front air intake grille 12 of the housing 1. When passing through the filter cotton 5, particulate matter and other pollutants are intercepted and purified. The purified air flows along the air transmission chamber 21 to the main exhaust fan 3. Part of it is directed to the air detection module 4 through the second transmission pipe 36 on the right side of the middle of the main exhaust fan 3, and the other part is discharged through the connecting channel between the rear of the fan and the air outlet grille 13, forming a complete air purification circuit; On the other hand, the negative pressure above the fan blades 32 also acts on the integrally formed branch exhaust port 31, which draws unfiltered external air from the outside of the filter cotton 5. The windproof inner strip 38 at the head of the branch exhaust port 31 partially blocks and guides the airflow, allowing some unfiltered air to pass through. Filtered air enters the transfer chamber 34, which is connected vertically to the branch exhaust port 31 outside the fan. The positive airflow generated by the rotation of the fan blades 32 is blown into the transfer chamber 34 through the air transmission pipe 33. With the help of the airflow thrust, the unfiltered air in the chamber is transported to the air detection module 4 through the first transmission pipe 35 on the right side of the transfer chamber 34. At the same time, the outer grille of the main exhaust fan 3 is missing 1 / 4 circle in the upper right area corresponding to the branch exhaust port 31 to avoid obstructing the air intake of the branch exhaust port 31 and to ensure smooth extraction of unfiltered air. The air detection module 4 receives the unfiltered air sample from the first transmission pipe 35 and the filtered air sample from the second transmission pipe 36 to compare the air quality difference between the two, and realizes real-time detection of purification effect and filtration efficiency. The whole process relies solely on the main exhaust fan 3 as the only air power source. Through a dedicated air duct and structural design, all functions of air purification, dual sample separation and collection, and transmission detection are completed simultaneously.
[0029] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A classroom air detection and processing device, comprising a housing (1), characterized in that: The housing (1) has an air intake grille (12) on the front side and an air outlet grille (13) on the rear side. A partition (2) is fastened inside the housing (1), and an air transmission chamber (21) is formed by the partition (2). A main exhaust fan (3) is horizontally arranged inside the air transmission chamber (21). An air detection module (4) is arranged on the right side of the partition (2). A filter cotton (5) is arranged between the air transmission chamber (21) and the air intake grille (12). The air inlet of the main exhaust fan (3) faces upward. A branch exhaust port (31) extending to the outside of the filter cotton (5) is integrally formed on one side of the main exhaust fan (3). The branch exhaust port (31) is connected to the air detection module (4). The main exhaust fan (3) is the only air power source.
2. The classroom air detection and processing device according to claim 1, characterized in that: The main exhaust fan (3) is provided with fan blades (32) inside. The branch exhaust port (31) is located above the main exhaust fan (3). The main exhaust fan (3) is provided with an air transmission pipe (33) directly below its exhaust port. The air transmission pipe (33) extends forward from below the branch exhaust port (31) inside the main exhaust fan (3). The air transmission pipe (33) is integrally formed with the main exhaust fan (3) and extends to the outside of the main exhaust fan (3).
3. The classroom air detection and processing device according to claim 2, characterized in that: The air blowing transmission pipe (33) and the branch exhaust port (31) are connected vertically outside the main exhaust fan (3) and a transfer chamber (34) is formed at the connection. The branch exhaust port (31) of the main exhaust fan (3) is horizontally arranged above the fan blade (32), and a windproof inner strip (38) is provided at the head of the branch exhaust port (31).
4. The classroom air detection and processing device according to claim 3, characterized in that: The branch exhaust port (31) is used to draw unfiltered external air from the front of the filter cotton (5). The inner baffle strip (38) is used to partially block and guide the drawn air so that some air is transmitted to the transfer chamber (34). The blowing transmission pipe (33) is set below the fan blade (32). When the fan blade (32) rotates clockwise, an airflow is generated at its bottom. This airflow is blown to the transfer chamber (34) through the blowing transmission pipe (33), pushing the unfiltered air in the transfer chamber (34) to the air detection module (4).
5. The classroom air detection and processing device according to claim 4, characterized in that: The right side of the transfer chamber (34) is integrally formed with a first transmission pipe (35), which is used to transmit unfiltered air samples in the transfer chamber (34) to the air detection module (4). The right side of the middle part of the main exhaust fan (3) is integrally formed with a second transmission pipe (36).
6. The classroom air detection and processing device according to claim 1, characterized in that: The main exhaust fan (3) has a fan grille (37) on its outer side. The fan grille (37) is missing 1 / 4 of a circle in the upper right area where the branch exhaust port (31) is located. The rear side of the main exhaust fan (3) is connected to the exhaust grille (13).