An adaptive variable air volume air filter

Abstract

The utility model discloses a kind of self-adapting variable air volume air filter, including air filter machine case, still including first inner purification treatment frame, second inner purification treatment frame and third inner purification treatment frame.The utility model uses, frequency conversion fan starts, can generate negative pressure suction force inside air filter machine case, so that polluted air in outer environment is inhaled by air inlet pipe spare, then, laser dust sensor on air inlet pipe spare can quickly feedback particulate matter concentration, and electrochemical sensor can monitor formaldehyde and other gas content, and feedback, when sensor detects that pollution intensifies, control system sends signal to improve fan speed, increase air volume PLC controller, when sensor detects that pollution intensifies, PLC controller will send signal to improve frequency conversion fan speed, increase air volume, the frequency conversion fan adopts variable frequency motor to drive fan blade, by changing power frequency to adjust speed, this makes that device realizes the advantage of self-adapting variable air volume, and enhanced applicability.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically to an adaptive variable air volume air filter. Background Technology

[0002] Air filters are commonly used to improve indoor air quality. They are devices that remove airborne particulate matter, harmful gases, and microorganisms through physical, chemical, or mechanical means to purify the air.

[0003] When using an air filter, the fan draws in ambient air. However, current devices do not readily adjust the intake air volume according to the level of air pollution, resulting in poor adaptive processing. Furthermore, dust particles accumulate on the front surface of the filter after filtration, and excessive accumulation can cause blockages, requiring manual cleaning. This cumbersome maintenance process no longer meets user needs. Therefore, we propose a new type of adaptive variable air volume air filter to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive variable air volume air filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adaptive variable air volume air filter, including an air filter housing, and further comprising...

[0006] The first internal purification rack, the second internal purification rack, and the third internal purification rack are slidably connected to the top of the air filter box in sequence. A PLC controller is installed on the outer wall of the air filter box.

[0007] An activated carbon filter is fixed inside the first internal purification rack, a photocatalytic purification plate is fixed inside the second internal purification rack, an ultraviolet lamp is threadedly connected to one end of the photocatalytic purification plate on the second internal purification rack, and a filter cloth layer is fixed inside the third internal purification rack, and a high-voltage power supply and a plasma generator are installed on the third internal purification rack in sequence.

[0008] The first, second, and third internal purification racks are all equipped with transducer vibrators, and the outer wall of the air filter box is equipped with an ultrasonic generator.

[0009] The air filter housing is equipped with an air inlet pipe and a variable frequency fan at both ends, and a laser dust sensor, an electrochemical sensor and a flow control valve are installed sequentially on the air inlet pipe.

[0010] Furthermore, the edges of the first, second, and third inner purification racks are all provided with rubber sealing layers that match the air filter housing, and screws are evenly arranged between the tops of the first, second, and third inner purification racks and the air filter housing.

[0011] Furthermore, the air filter housing is provided with graded filter chambers that match the first internal purification rack, the second internal purification rack, and the third internal purification rack in sequence.

[0012] Furthermore, the graded filtration chamber is provided with three chambers, and differential pressure sensors are installed at both ends of each chamber.

[0013] Furthermore, the end of the air inlet pipe that is away from the air filter housing is threadedly connected to an air inlet filter cylinder, and a metal filter screen is installed inside the air inlet filter cylinder.

[0014] Furthermore, a waste discharge area is provided at the bottom of the graded filtration chamber, and the waste discharge area is in a concave state.

[0015] Furthermore, the bottom of the waste discharge area is uniformly threaded with sedimentation collection bottles, making it easy to periodically disassemble and assemble the sedimentation collection bottles for cleaning and maintenance.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This adaptive variable air volume (VAV) air filter optimizes its performance through the installation of tiered filtration chambers. Firstly, the variable frequency fan generates negative pressure inside the air filter housing, drawing in polluted air from the outside environment through the inlet duct. Then, a laser dust sensor on the inlet duct quickly reports particulate matter concentration, while an electrochemical sensor monitors the content of gases such as formaldehyde and provides feedback. When the sensors detect increased pollution, the control system sends a signal to increase the fan speed and airflow to the PLC controller. Conversely, when the sensors detect increased pollution, the PLC controller sends a signal to increase the variable frequency fan speed and airflow. This variable frequency fan uses a variable frequency motor to drive the fan blades, adjusting the speed by changing the power supply frequency. This allows the device to achieve the advantage of adaptive variable air volume, enhancing its applicability. Secondly, the first and second internal purification racks... Differential pressure sensors are installed at the input and output ends of the graded filtration chamber corresponding to the third internal purification frame. These sensors can monitor the degree of clogging of the three filter structures. When dust accumulation on the filter screens increases resistance, it triggers the ultrasonic generator to start. In conjunction with the transducer oscillators installed on the first, second, and third internal purification frames, electrical energy is converted into high-frequency energy, which is then converted into ultrasonic vibration. This high-frequency ultrasonic vibration dislodges impurities attached to the activated carbon filter, photocatalytic purification screen, and filter cloth layer. The impurities are then collected in the sedimentation collection bottle through the waste discharge area. The sedimentation collection bottle can also contain some liquid to absorb the collected dust. Subsequently, cleaning and maintenance of the device can be achieved simply by disassembling the threaded sedimentation collection bottle. Compared to the traditional method of disassembling the filter structure for cleaning, this method makes device maintenance more convenient and easier to promote. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the chassis of this utility model.

[0020] Figure 3 This is a rear view schematic diagram of the third internal purification treatment rack of this utility model;

[0021] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. PLC controller; 2. Air filter housing; 3. Ultrasonic generator; 4. First internal purification rack; 5. Variable frequency fan; 6. Second internal purification rack; 7. Third internal purification rack; 8. Staged filtration chamber; 9. Differential pressure sensor; 10. Sedimentation collection bottle; 11. Waste discharge area; 12. High-voltage power supply; 13. Filter cloth layer; 14. Activated carbon filter screen; 15. Transducer vibrator; 16. Plasma generator; 17. Flow control valve; 18. Electrochemical sensor; 19. Laser dust sensor; 20. Inlet filter cartridge; 21. Inlet duct fittings; 22. Ultraviolet lamp; 23. Photocatalytic purification screen. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Please see Figure 1-4 One embodiment of this utility model provides: an adaptive variable air volume air filter, including an air filter housing 2, and further comprising...

[0027] The first internal purification rack 4, the second internal purification rack 6, and the third internal purification rack 7 are sequentially slidably connected to the top of the air filter box 2. A PLC controller 1 is installed on the outer wall of the air filter box 2.

[0028] An activated carbon filter 14 is fixed inside the first internal purification rack 4. A photocatalytic purification mesh plate 23 is fixed inside the second internal purification rack 6. An ultraviolet lamp 22 is threadedly connected to one end of the photocatalytic purification mesh plate 23 on the second internal purification rack 6. A filter cloth layer 13 is fixed inside the third internal purification rack 7. A high-voltage power supply 12 and a plasma generator 16 are installed on the third internal purification rack 7 in sequence.

[0029] In operation, polluted air first passes through the activated carbon filter 14 on the first internal purification rack 4. Utilizing the porous structure of activated carbon, formaldehyde, benzene, odor molecules, and some smoke particles in the air are adsorbed through van der Waals forces, achieving the function of removing large molecular pollutants and odors. The air, having completed the first stage of filtration and purification, then passes through the second internal purification rack 6. When the ultraviolet lamp 22 on the second internal purification rack 6 illuminates the photocatalyst on the photocatalyst purification plate 23, electron-hole pairs are generated. These electron-hole pairs react with the water and oxygen adsorbed on the surface to generate hydroxyl radicals and superoxide anions. These strong oxidizing free radicals decompose organic matter such as formaldehyde and benzene into carbon dioxide and water, while simultaneously destroying the cell membranes or nuclei of bacteria and viruses. The acid structure enables the decomposition of small organic molecules and sterilization. Then, the gas that has completed two stages of treatment enters the third internal purification rack 7. The high-voltage power supply 12 on the third internal purification rack 7, together with the plasma generator 16, generates a high-voltage electric field inside the graded filter chamber 8 corresponding to the third internal purification rack 7 to ionize the air and generate a large number of high-energy electrons, oxygen ions, hydroxyl radicals and other active particles. The active particles collide with pollutants and break the molecular chemical bonds through oxidation-reduction reactions, decomposing them into harmless substances. In addition, the charged particles can also cause particulate matter to aggregate and assist in the removal of PM2.5, achieving the functions of deep oxidation and dust removal. Thus, through the graded purification structure, the air filtration and purification effect is improved.

[0030] The first internal purification rack 4, the second internal purification rack 6 and the third internal purification rack 7 are all equipped with transducer vibrators 15, and the outer wall of the air filter box 2 is equipped with an ultrasonic generator 3.

[0031] The bottom of the graded filtration chamber 8 is provided with a waste discharge area 11, which is recessed.

[0032] The bottom of the waste discharge area 11 is uniformly threaded with a sedimentation collection bottle 10, which makes it easy to periodically disassemble and assemble the sedimentation collection bottle 10 for cleaning and maintenance.

[0033] The graded filter chamber 8 is provided with 3 chambers, and differential pressure sensors 9 are installed at both ends inside the graded filter chamber 8.

[0034] In use, differential pressure sensors 9 are installed at the front and rear input and output ends of the graded filtration chambers 8 corresponding to the first internal purification frame 4, the second internal purification frame 6, and the third internal purification frame 7. These sensors can monitor the degree of clogging of the three filter structures. When dust accumulation on the filter screens leads to increased resistance, the ultrasonic generator 3 is triggered to start. In conjunction with the transducer vibrators 15 installed on the first internal purification frame 4, the second internal purification frame 6, and the third internal purification frame 7, electrical energy is converted into high-frequency energy and then into ultrasonic vibration. The high-frequency ultrasonic vibration shakes off the impurities attached to the activated carbon filter screen 14, the photocatalytic purification screen plate 23, and the filter cloth layer 13. The impurities are then collected in the sedimentation collection bottle 10 through the waste discharge area 11. Some liquid can also be placed inside the sedimentation collection bottle 10 to absorb the collected dust. Subsequently, the device can be cleaned and maintained simply by disassembling the threaded sedimentation collection bottle 10. Compared with the traditional method of disassembling the filter structure for cleaning, this method makes the device maintenance more convenient and easier to promote.

[0035] Air filter housing 2 has an air inlet pipe 21 and a variable frequency fan 5 installed at both ends. A laser dust sensor 19, an electrochemical sensor 18 and a flow control valve 17 are installed on the air inlet pipe 21 in sequence.

[0036] When in use, the variable frequency fan 5 starts, generating negative pressure suction inside the air filter box 2, causing polluted air from the outside environment to be drawn in through the air inlet duct 21. Then, the laser dust sensor 19 on the air inlet duct 21 can quickly provide feedback on the particulate matter concentration, while the electrochemical sensor 18 can monitor the content of gases such as formaldehyde and provide feedback. When the sensor detects increased pollution, the control system sends a signal to increase the fan speed and increase the air volume to the PLC controller 1. When the sensor detects increased pollution, the PLC controller 1 sends a signal to increase the speed of the variable frequency fan 5 and increase the air volume. The variable frequency fan 5 uses a variable frequency motor to drive the fan blades, and the speed is adjusted by changing the power supply frequency. This enables the device to achieve the advantage of adaptive variable air volume and enhances its applicability.

[0037] The edges of the first inner purification rack 4, the second inner purification rack 6, and the third inner purification rack 7 are all provided with rubber sealing layers that match the air filter housing 2. The tops of the first inner purification rack 4, the second inner purification rack 6, and the third inner purification rack 7 are all evenly provided with screws between them and the air filter housing 2.

[0038] The air filter housing 2 is provided with graded filter chambers 8 that match the first internal purification rack 4, the second internal purification rack 6 and the third internal purification rack 7 in sequence.

[0039] The end of the air inlet pipe 21 away from the air filter housing 2 is threadedly connected to the air inlet filter cartridge 20, and the air inlet filter cartridge 20 is equipped with a metal filter screen.

[0040] The working principle of this utility model is as follows: First, an external power supply is connected, and the variable frequency fan 5 starts, which can generate negative pressure suction inside the air filter box 2, so that polluted air from the outside environment is drawn in through the air inlet pipe 21. Then, the laser dust sensor 19 on the air inlet pipe 21 can quickly provide feedback on the particulate matter concentration, and the electrochemical sensor 18 can monitor the content of gases such as formaldehyde and provide feedback. When the sensor detects that the pollution is aggravated, the control system sends a signal to increase the fan speed and increase the air volume. When the sensor detects that the pollution is aggravated, the PLC controller 1 will send a signal to increase the speed of the variable frequency fan 5 and increase the air volume. The variable frequency fan 5 uses a variable frequency motor to drive the fan blades, and adjusts the speed by changing the power supply frequency. This enables the device to achieve the advantage of adaptive variable air volume and enhances its applicability. Then, the polluted air first passes through the activated carbon filter 14 on the first internal purification treatment rack 4. Utilizing the porous structure of activated carbon, formaldehyde, benzene, odor molecules and some smoke particles in the air are adsorbed by van der Waals forces, thereby removing large molecular pollutants. After the first stage of filtration and purification, the air passes through the second internal purification rack 6. When the ultraviolet lamp 22 on the second internal purification rack 6 illuminates the photocatalyst on the photocatalyst purification mesh plate 23, electron-hole pairs are generated. These electron-hole pairs react with water and oxygen adsorbed on the surface to produce hydroxyl radicals and superoxide anions. These strong oxidizing free radicals decompose organic matter such as formaldehyde and benzene into carbon dioxide and water, while simultaneously destroying the cell membranes or nucleic acid structures of bacteria and viruses, thus achieving the functions of decomposing small molecule organic matter and sterilization. Then, the air that has completed two stages of treatment enters the third internal purification rack 7. The high-voltage power supply 12 on the third internal purification rack 7, in conjunction with the plasma generator 16, generates a high-voltage electric field inside the corresponding graded filtration chamber 8 of the third internal purification rack 7, ionizing the air and producing a large number of high-energy electrons, oxygen ions, hydroxyl radicals, and other active particles. These active particles collide with pollutants, breaking molecular chemical bonds through oxidation-reduction reactions and decomposing them into harmless substances. Furthermore, the charged particles can also cause particulate matter to aggregate, assisting in the removal of PM2.5.5. This system achieves deep oxidation and dust removal functions, thereby improving the air filtration and purification effect through a graded purification structure. Furthermore, differential pressure sensors 9 are installed at the input and output ends of the graded filtration chambers 8 corresponding to the first, second, and third internal purification frames 4, 6, and 7. These sensors monitor the degree of clogging in the three filter structures. When dust accumulation on the filter screens increases resistance, the ultrasonic generator 3 is triggered. Combined with the transducer vibrators 15 installed on the first, second, and third internal purification frames 4, 6, and 7, electrical energy is converted into high-frequency energy, which is then converted into ultrasonic vibration. This high-frequency ultrasonic vibration dislodges impurities attached to the activated carbon filter 14, photocatalytic purification screen 23, and filter cloth layer 13. The collected impurities then enter the sedimentation collection bottle 10 through the waste discharge area 11. The sedimentation collection bottle 10 can also contain liquid to absorb the collected dust. Afterward, cleaning and maintenance of the device can be achieved simply by disassembling the threaded sedimentation collection bottle 10. Compared to the traditional method of disassembling the filter structure for cleaning, this method makes device maintenance more convenient and easier to promote. .

[0041] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adaptive variable air volume air filter, comprising an air filter housing (2), characterized in that: Also includes The first internal purification rack (4), the second internal purification rack (6), and the third internal purification rack (7) are sequentially slidably connected to the top of the air filter box (2). A PLC controller (1) is installed on the outer wall of the air filter box (2). An activated carbon filter (14) is fixed inside the first internal purification rack (4), a photocatalytic purification mesh plate (23) is fixed inside the second internal purification rack (6), an ultraviolet lamp (22) is threaded onto one end of the photocatalytic purification mesh plate (23) on the second internal purification rack (6), a filter cloth layer (13) is fixed inside the third internal purification rack (7), and a high-voltage power supply (12) and a plasma generator (16) are installed on the third internal purification rack (7) in sequence. The first internal purification rack (4), the second internal purification rack (6) and the third internal purification rack (7) are all equipped with transducer oscillators (15), and the outer wall of the air filter box (2) is equipped with an ultrasonic generator (3). The air filter box (2) is equipped with an air inlet pipe (21) and a variable frequency fan (5) at both ends. A laser dust sensor (19), an electrochemical sensor (18) and a flow control valve (17) are installed on the air inlet pipe (21) in sequence.

2. The adaptive variable air volume air filter according to claim 1, characterized in that, The edges of the first internal purification rack (4), the second internal purification rack (6) and the third internal purification rack (7) are all provided with rubber sealing layers that match the air filter box (2). Screws are evenly provided between the top of the first internal purification rack (4), the second internal purification rack (6) and the third internal purification rack (7) and the air filter box (2).

3. The adaptive variable air volume air filter according to claim 1, characterized in that, The air filter housing (2) is provided with graded filter chambers (8) that match the first internal purification rack (4), the second internal purification rack (6) and the third internal purification rack (7) in sequence.

4. An adaptive variable air volume air filter according to claim 3, characterized in that, The graded filter chamber (8) is provided with three chambers, and differential pressure sensors (9) are installed at both ends inside the graded filter chamber (8).

5. An adaptive variable air volume air filter according to claim 1, characterized in that, The air inlet pipe (21) is threaded to an air inlet filter cylinder (20) at the end away from the air filter housing (2), and a metal filter screen is provided inside the air inlet filter cylinder (20).

6. An adaptive variable air volume air filter according to claim 3, characterized in that, The bottom of the graded filtration chamber (8) is provided with a waste discharge area (11), which is in a concave state.

7. An adaptive variable air volume air filter according to claim 6, characterized in that, The bottom of the waste discharge area (11) is uniformly threaded with a sedimentation collection bottle (10).

Images