A biological aerosol protection filtration device

Abstract

The application discloses a biological aerosol protection filtering device and relates to the biological aerosol protection field.The biological aerosol protection filtering device comprises a frame cabinet, an air inlet hole is arranged on the top plate of the frame cabinet, an air outlet hole is arranged on the bottom plate of the frame cabinet, and a sealed back plate is arranged in the frame cabinet; a filtering assembly is horizontally arranged in the frame cabinet; the filtering assembly vertically divides the inner cavity of the frame cabinet into four parts from high to low, and the four parts are a concentration detection cabin, a primary sterilization cabin, a deep sterilization cabin and an exhaust cabin in sequence; the biological aerosol concentration is monitored in real time by means of a gas sensor, the environmental risk grade is judged, and the working mode is adjusted according to the risk grade.

Description

Technical Field

[0001] This invention relates to the field of bioaerosol protection, specifically a bioaerosol filtering device. Background Technology

[0002] Bioaerosols are colloidal systems formed by biological particles such as bacteria, viruses, allergenic pollen, and fungal spores suspended in the air. These aerosols are biologically active and can lead to the spread of infectious diseases, allergic reactions, and malignant tumors. Therefore, protection against bioaerosols is very important in daily life.

[0003] Existing protective filtration devices only physically intercept bioaerosols. The captured microorganisms may multiply on the filter components, penetrate the filter material, or cause secondary pollution during use / replacement. Furthermore, the protective filtration process cannot be adjusted according to the bioaerosol content in the air. Summary of the Invention

[0004] To address the above problems, the present invention provides the following technical solution: a biological desiccant protection filtration device, comprising:

[0005] The frame cabinet has an air inlet on the top plate and an air outlet on the bottom plate, and the frame cabinet is equipped with a sealed back plate.

[0006] The filter assembly is horizontally installed inside the frame cabinet, and the filter assembly vertically divides the inner cavity of the frame cabinet into four parts, from high to low: concentration detection chamber, primary sterilization chamber, deep sterilization chamber, and exhaust chamber.

[0007] Further, as a preferred embodiment, the filter assembly is characterized by having multiple sets of filter plate tracks between it and the frame cabinet. The filter assembly includes a dust barrier plate, a primary filter plate, a depth filter plate, a fan base plate, and an activated carbon plate. The space between the frame cabinet, the dust barrier plate, and the primary filter plate serves as the concentration detection chamber. The space between the frame cabinet, the primary filter plate, and the fan base plate serves as the primary sterilization chamber. The space between the frame cabinet, the fan base plate, and the activated carbon plate serves as the depth sterilization chamber.

[0008] Furthermore, as a preferred embodiment, the concentration detection chamber is characterized by having multiple gas-sensitive sensors installed on its inner wall for detecting the concentration of bioaerosols in the air.

[0009] Furthermore, as a preferred embodiment, multiple sets of lamp holders are symmetrically arranged on both sides of the primary sterilization chamber, and the lamp holders are distributed with gaps between them and the primary filter plate and the depth filter plate, and multiple columnar ultraviolet lamps are arranged between the lamp holders and the sealing back plate.

[0010] Furthermore, as a preferred embodiment, a fan filter screen is provided in the middle of the fan base plate, and a fan with an air inlet covering the fan filter screen is fixedly provided at the lower end of the fan base plate, and sterilization air ducts are symmetrically provided at both ends of the fan.

[0011] Furthermore, as a preferred embodiment, the fan includes a fan housing, a fan side plate, and fan blades, with cross-shaped connecting frames symmetrically arranged on both sides of the fan blades and connected to the drive shaft of the sterilization air duct.

[0012] Further, preferably, the sterilization duct includes:

[0013] A positioning ring is provided at one end of the sterilization air duct, and a positioning groove is provided on the outer wall circumferentially. The positioning groove engages with the side plate of the fan.

[0014] A turbofan is installed inside the sterilization air duct on the side where the positioning ring is located, and a guide fan is provided at the other end of the drive shaft of the turbofan.

[0015] The quick-release base has multiple air holes arranged in a circumferential array. The quick-release base is slidably disposed at the other end of the sterilization air duct. The outer wall of the sterilization air duct is provided with multiple quick-release locks arranged in a circumferential array. The quick-release base has a fixing ring on the inner side.

[0016] A ring-shaped ultraviolet light is disposed between the quick-release base and the fixing ring, and a sealing ring is provided around the ring-shaped ultraviolet light;

[0017] The photocatalytic coal mesh has one end fixedly installed between the fixing ring and the turbofan quick-release base, and the other end of the photocatalytic coal mesh is provided with an electromagnetic fixing ring;

[0018] A dry sponge is disposed around the turbofan quick-release base;

[0019] The fixing ring is provided with a light-transmitting ring.

[0020] Furthermore, as a preferred embodiment, an elastic element is provided between the annular ultraviolet lamp and the quick-release base.

[0021] Compared with the prior art, the present invention provides a bioaerosol protection and filtration device, which has the following beneficial effects:

[0022] This invention transforms bioaerosol protection from passive to active, and unlike traditional protection which only intercepts but does not kill, it can kill the intercepted active microorganisms. By using a gas-sensitive sensor to monitor the concentration of bioaerosols (VOCs) in real time, it can intelligently determine the environmental risk level and switch the working mode according to the concentration of bioaerosols in the environment, thus improving the adaptability of this invention.

[0023] In this invention, the slide rail of the filter assembly and the quick-release lock of the sterilization air duct make it convenient to replace the filter and the photocatalytic coal mesh, without the need to adjust other parts during replacement. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of a bioaerosol protection and filtration device;

[0025] Figure 2 A schematic diagram showing the detailed components of a bioaerosol protection and filtration device;

[0026] Figure 3 This is a schematic diagram of the movement of a sterilization air duct in a bioaerosol protection filtration device.

[0027] Figure 4 for Figure 3 A magnified structural diagram of A in the middle;

[0028] Figure 5 This is a schematic diagram of some structural connections in a bioaerosol protection and filtration device.

[0029] Figure 6 for Figure 5 A magnified structural diagram of B in the diagram;

[0030] Figure 7 This is a schematic diagram of the air duct in a sterilization air duct of a bioaerosol protection filtration device.

[0031] Figure 8 This is a schematic diagram of the sterilization duct in a bioaerosol protection filtration device.

[0032] In the diagram: 1. Frame cabinet; 11. Sealed back panel; 12. Air inlet; 13. Air outlet; 14. Filter plate slide; 2. Filter assembly; 21. Dust barrier plate; 22. Primary filter plate; 23. Depth filter plate; 24. Fan base plate; 241. Fan filter screen; 25. Activated carbon plate; 3. Concentration detection chamber; 31. Gas sensor; 4. Primary sterilization chamber; 41. Lamp holder; 42. Columnar ultraviolet lamp; 5. Depth sterilization chamber; 51. 511. Fan; 512. Fan side plate; 513. Fan blades; 52. Sterilization air duct; 521. Positioning ring; 522. Turbofan; 523. Photocatalytic coal mesh; 524. Ring UV lamp; 525. Fixing ring; 526. Quick-release base; 527. Quick-release lock; 528. Guide fan; 529. Drying sponge; 530. Elastic component; 531. Sealing ring; 532. Electromagnetic fixing ring; 6. Exhaust chamber. Detailed Implementation

[0033] 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 terms are interchangeable where appropriate; this is merely a distinguishing method used to describe objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0034] Example: Please refer to Figures 1-8 In this embodiment of the invention, a bioaerosol protection filtration device is provided, comprising:

[0035] The frame cabinet 1 has an air inlet 12 on its top plate and an air outlet 13 on its bottom plate, and the frame cabinet 1 is equipped with a sealing back plate 11.

[0036] The filter assembly 2 is horizontally installed inside the frame cabinet 1. The filter assembly 2 vertically divides the inner cavity of the frame cabinet 1 into four parts, from high to low: concentration detection chamber 3, primary sterilization chamber 4, deep sterilization chamber 5, and exhaust chamber 6.

[0037] Specifically, such as Figure 2 As shown, multiple sets of filter plate slides 14 are provided between the filter assembly 2 and the frame cabinet 1. The filter assembly 2 includes a dust barrier plate 21, a primary filter plate 22, a depth filter plate 23, a fan base plate 24, and an activated carbon plate 25. The frame cabinet 1, the dust barrier plate 21, and the primary filter plate 22 serve as the concentration detection chamber 3. The frame cabinet 1, the primary filter plate 22, and the fan base plate 24 serve as the primary sterilization chamber 4. The frame cabinet 1, the fan base plate 24, and the activated carbon plate 25 serve as the depth sterilization chamber 5. Each filter plate is slidably disposed in the respective sets of filter plate slides 14, facilitating the replacement of the filter assembly 2.

[0038] Preferably, the inner wall of the concentration detection chamber 3 is provided with a gas sensor 31 for detecting the concentration of bioaerosols in the air.

[0039] In the specific implementation process, the primary filter plate 22 is not only used to protect against microorganisms with larger particles, but also to compress the air entering the concentration detection chamber 3 to a certain extent. The concentration of bioaerosols in the concentration detection chamber 3 increases, which can improve the sensitivity of the gas sensor 31. Many microorganisms (such as bacteria, fungi, and viruses) in bioaerosols release specific VOCs during their growth or metabolism. The gas sensor 31 determines the concentration of bioaerosols by detecting the concentration of VOCs in the air.

[0040] In this embodiment, as Figure 2 As shown, multiple sets of lamp holders 41 are symmetrically arranged on both sides of the primary sterilization chamber 4, and the lamp holders 41 are spaced apart from the primary filter plate 22 and the depth filter plate 23. The double-layer filter plate improves the interception rate of bioaerosols, and the gap distribution between the ultraviolet lamps and the filter plates can fully filter and inactivate the bioaerosols intercepted by the filter plates. Multiple columnar ultraviolet lamps 42 are arranged between the lamp holders 41 and the sealing back plate 11.

[0041] Furthermore, a fan filter 241 is provided in the middle of the fan base plate 24, and a fan 51 with an air inlet covering the fan filter 241 is fixedly provided at the lower end of the fan base plate 24. Sterilization air ducts 52 are symmetrically arranged at both ends of the fan 51. The dual air ducts can improve the air purification efficiency of the present invention.

[0042] In practice, the fan 51 can draw the gas from the upper chamber to form a negative pressure. External air is drawn into the invention and flows sequentially through the concentration detection chamber 3, the primary sterilization chamber 4, and the deep sterilization chamber 5, and is finally discharged from the exhaust chamber 6.

[0043] Specifically, such as Figure 5 As shown, the fan 51 includes a fan housing 511, a fan side plate 512, and a fan blade 513. The fan blade 513 is provided with cross connecting frames on both sides that are connected to the drive shaft of the sterilization air duct 52.

[0044] As a preferred option, such as Figure 3 , Figure 4 As shown, the sterilization air duct 52 includes:

[0045] A positioning ring 521 is provided at one end of the sterilization air duct 52, and a positioning groove is provided on the outer wall circumferentially. The positioning groove is engaged with the fan side plate 512.

[0046] Turbine fan 522 is installed inside the side tube of the sterilization air duct 52 where the positioning ring 521 is located, and a guide fan 528 is provided at the other end of the drive shaft of the turbine fan 522.

[0047] The quick-release base 526 has multiple air holes arranged in a circumferential array. The quick-release base 526 is slidably disposed at the other end of the sterilization air duct 52. The outer wall of the sterilization air duct 52 has multiple quick-release locks 527 arranged in a circumferential array. The quick-release base 526 has a fixing ring 525 on its inner side.

[0048] A ring-shaped ultraviolet lamp 524 is disposed between the quick-release base 526 and the fixing ring 525, and a sealing ring 531 is provided around the ring-shaped ultraviolet lamp 524. The ring-shaped ultraviolet lamp 524 is controlled by a gas sensor 31.

[0049] The photocatalytic coal mesh 523 has one end fixedly installed between the fixing ring 525 and the turbofan quick-release base, and the other end of the photocatalytic coal mesh 523 is provided with an electromagnetic fixing ring 532.

[0050] The drying sponge 529 is disposed around the turbine fan quick-release base and is used to dry the air entering the sterilization air duct 52, thereby extending the service life of the photocatalytic coal mesh 523.

[0051] The fixing ring 525 is provided with a light-transmitting ring, and an elastic element 530 is provided between the ring-shaped ultraviolet lamp 524 and the quick-release base 526; the fan blades 513, the turbo fan 522, and the guide fan 528 are arranged on the same drive shaft, and the rotational speed of the drive shaft is also controlled by the gas sensor 31.

[0052] In practice, the photocatalytic coal mesh 523 and the ring-shaped ultraviolet lamp 524 are first installed on the quick-release base 526. Then, the quick-release lock 527 is used to install the quick-release base 526 into the inactivation air duct 52. After the device is started, the electromagnetic fixing ring 532 is attracted to the turbine fan base. When the photocatalytic coal mesh 523 needs to be replaced, simply open the quick-release lock 527 and pull out the quick-release base 526 to replace the ring-shaped ultraviolet lamp 524 and the photocatalytic coal mesh 523.

[0053] Preferably, the ultraviolet lamp 42 in this invention is a 222nm lamp. 222nm photons can only penetrate microorganisms and will not penetrate human skin, thus not affecting the human body. The ozone generated by the ultraviolet lamp during sterilization is adsorbed by the activated carbon plate 25 and will not cause secondary pollution to the filtered gas.

[0054] When the invention is in a low-risk area, the primary sterilization chamber 4 can meet the bioaerosol protection and filtration requirements, and the deep sterilization chamber 5 only plays a driving role, reducing the consumption rate of the photocatalytic coal mesh 523. When the invention is in a high-risk area, the primary sterilization chamber 4 cannot meet the bioaerosol protection and filtration requirements, the concentration of VOCs in the concentration detection chamber 3 is high, the gas sensor 31 is triggered, the ring ultraviolet lamp 524 emits light, and the photocatalytic coal mesh 523, under the excitation of the ultraviolet lamp, the electrons (e-) on the coal mesh transition, generating corresponding holes (h+), generating active oxygen and hydroxyl radicals with extremely strong oxidizing effects, oxidizing and decomposing fungi, viruses, bacteria, etc. into harmless CO2 and H2O, and in this process, the photocatalytic coal mesh does not generate secondary pollutants.

[0055] Specifically, when the gas sensor 31 detects that the VOCs concentration has reached a preset threshold, it triggers the following connection...

[0056] Dynamic control mechanism:

[0057] The blower 51 and the sterilization air duct 52 enter the speed-up mode, and the airflow velocity inside the sterilization air duct 52 increases accordingly;

[0058] The elastic element 530 automatically adjusts its working state according to changes in wind speed.

[0059] a) When the wind speed reaches the first threshold, the elastic element 530 is compressed to its limit stroke. At this time, the strontium titanate photocatalytic coating of the photocatalytic filter unit 523 extends to its maximum working range, forming a low-resistance flow channel structure, so that the air flow rate ≥1.5m / s can quickly pass through the catalytic reaction zone.

[0060] b) When the wind speed is in the second threshold range, the elastic element 530 generates progressive compression through the helical spring structure, which drives the photocatalytic filter unit 523 to form a pleated contraction structure, which lengthens the path of airflow through the catalytic reaction zone and reduces the flow velocity to 0.3-0.8 m / s, significantly improving the pollutant degradation efficiency.

[0061] When the VOCs concentration in concentration detection chamber 3 drops below the safety threshold, the following termination procedure is executed:

[0062] I) The output signal of the gas sensor 31 is reset, and the fan 51 and the sterilization air duct 52 resume their basic speed.

[0063] II) The ring-shaped ultraviolet lamp array 524 enters standby mode, and the photocatalytic reaction terminates;

[0064] III) The elastic element 530 automatically resets to its initial state, causing the photocatalytic filter unit 523 to return to its standard pleats.

[0065] Wrinkled structure.

[0066] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bioaerosol protection and filtration device, characterized in that, include: The frame cabinet (1) has an air inlet (12) on its top plate and an air outlet (13) on its bottom plate, and a sealed back plate (11) is provided inside the frame cabinet (1). The filter assembly (2) is horizontally set inside the frame cabinet (1). The filter assembly (2) vertically divides the inner cavity of the frame cabinet (1) into four parts, from high to low: concentration detection chamber (3), primary sterilization chamber (4), deep sterilization chamber (5), and exhaust chamber (6).

2. The bioaerosol protection and filtration device according to claim 1, characterized in that, Multiple filter plate slides (14) are provided between the filter assembly (2) and the frame cabinet (1). The filter assembly (2) includes a dust barrier plate (21), a primary filter plate (22), a deep filter plate (23), a fan base plate (24), and an activated carbon plate (25). The frame cabinet (1), the dust barrier plate (21), and the primary filter plate (22) serve as the concentration detection chamber (3). The frame cabinet (1), the primary filter plate (22), and the fan base plate (24) serve as the primary sterilization chamber (4). The frame cabinet (1), the fan base plate (24), and the activated carbon plate (25) serve as the deep sterilization chamber (5).

3. The bioaerosol protection and filtration device according to claim 2, characterized in that, The inner wall of the concentration detection chamber (3) is equipped with multiple gas-sensitive sensors (31) for detecting the concentration of bioaerosols in the air.

4. The bioaerosol protection and filtration device according to claim 2, characterized in that, The primary sterilization chamber (4) is symmetrically provided with multiple sets of lamp holders (41) on both sides, and the lamp holders (41) are distributed with gaps between the primary filter plate (22) and the depth filter plate (23). Multiple columnar ultraviolet lamps (42) are provided between the lamp holders (41) and the sealing back plate (11).

5. A bioaerosol protection and filtration device according to claim 2, characterized in that, A fan filter (241) is provided in the middle of the fan base plate (24), and a fan (51) with an air inlet covering the fan filter (241) is fixedly provided at the lower end of the fan base plate (24). Sterilization air ducts (52) are symmetrically provided at both ends of the fan (51).

6. A bioaerosol protection and filtration device according to claim 5, characterized in that, The fan (51) includes a fan housing (511), a fan side plate (512), and a fan blade (513). The fan blade (513) is provided with cross-shaped connecting frames on both sides that are connected to the drive shaft of the sterilization air duct (52).

7. A bioaerosol protection and filtration device according to claim 6, characterized in that, The sterilization air duct (52) includes: A positioning ring (521) is provided at one end of the sterilization air duct (52), and a positioning groove is provided on the outer wall circumferentially. The positioning groove is engaged with the fan side plate (512). A turbo fan (522) is installed inside the side of the sterilization air duct (52) where the positioning ring (521) is located, and a guide fan (528) is provided at the other end of the drive shaft of the turbo fan (522). The quick-release base (526) has multiple air holes arranged in a circumferential array. The quick-release base (526) is slidably disposed at the other end of the sterilization air duct (52). The outer wall of the sterilization air duct (52) is provided with multiple quick-release locks (527) arranged in a circumferential array. The inner side of the quick-release base (526) is provided with a fixing ring (525). A ring-shaped ultraviolet lamp (524) is disposed between the quick-release base (526) and the fixing ring (525), and a sealing ring (531) is provided around the ring-shaped ultraviolet lamp (524). The photocatalytic coal mesh (523) is fixedly installed at one end between the fixing ring (525) and the turbofan quick-release base, and an electromagnetic fixing ring (532) is provided at the other end of the photocatalytic coal mesh (523). Dry sponge (529) is disposed around the turbofan quick-release base; The fixing ring (525) is provided with a light-transmitting ring.

8. A bioaerosol protection and filtration device according to claim 7, characterized in that, An elastic element (530) is provided between the ring-shaped ultraviolet lamp (524) and the quick-release base (526).

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