An integrated fan filter unit

Abstract

The utility model relates to a kind of integrated fan filter device, it is related to filter device technical field, multiple filter air ducts are equipped on fixed box, filter membrane is respectively equipped in each filter air duct, multiple partition plates are evenly arranged along the circumferential direction inside each filter air duct, adsorption filter assembly for secondly adsorbing and filtering air is respectively arranged between every two adjacent partition plates, and filtered air is blown out by air outlet plate.The utility model filters larger particulate matter in air by filter membrane, polygonal filter frame body and filter hemispherical body protrusion adopt montmorillonite or natural zeolite material, remove multiple air pollutants in air filtration field, Al2O3-TiO2 Compound coating or Al-doped TiO2 Nano-silver-titanium dioxide composite coating coated on each filter hemispherical body protrusion can adsorb harmful substances in air, vibration rod can disturb flow to air entering filter air duct, improve the adsorption effect of harmful gas in air, while can avoid that large particle in air enters honeycomb filter grid and causes blockage.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and in particular to an integrated fan filtration device. Background Technology

[0002] Integrated fan filter units are self-powered air supply and filtration devices, modular terminal air supply devices with filtration functions, and can be widely used in cleanrooms, clean workbenches and other occasions.

[0003] Existing filtration devices use multiple filter screens, and some dust particles can easily enter the filter media and clog the filter elements, resulting in a decrease in filtration efficiency. For example, after long-term use, the dust cake formed by submicron dust particles in the PTFE membrane filter media may also affect the filtration efficiency, and it is also inconvenient to clean. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an integrated fan filtration device with high efficiency and improved desorption and regeneration.

[0005] The technical solution adopted to solve the above technical problems is as follows: An air inlet plate is provided on one side of the filter box for air intake. Air enters the filter box through the air inlet of the air inlet plate for filtration. A fixed box is provided inside the filter box. The fixed box is provided with multiple filter ducts that are connected to the air inlet of the air inlet plate. Each filter duct is provided with a filter membrane for the first filtration of the air. The filter membrane is close to the air inlet plate. Multiple baffles are evenly arranged in the circumferential direction inside each filter duct. An adsorption filter assembly for the second adsorption filtration of the air is provided between every two adjacent baffles. The adsorption filter assembly is located on one side of the filter membrane. The outlet end of the adsorption filter assembly is connected to the outlet end of the filter duct. An air outlet plate is provided on the other side of the filter box and is connected to the outlet end of the filter duct. The filtered air is blown out through the air outlet plate. The adsorption and filtration assembly consists of multiple polygonal filter frames for filtering gas, which are fixedly connected by connecting plates and stacked to form a filter grid. Each polygonal filter frame has a filter hemispherical protrusion for filtering gas on its inner side, and the outer surface of each filter hemispherical protrusion is coated with a composite coating, which adsorbs harmful substances in the air. The polygonal filter frame is made of montmorillonite or natural zeolite, the filter hemispherical protrusion is made of montmorillonite or natural zeolite, and the composite coating is an Al2O3-TiO2 composite coating or a nano-aluminum-titanium dioxide composite coating. Each of the aforementioned filter hemispherical protrusions is provided with a base, and a vibrating rod is inserted inside each base. A tensioning ring is provided at the connection between the base and the vibrating rod. The tensioning ring is made of nickel-titanium alloy and deforms when heated.

[0006] Furthermore, each of the aforementioned filter ducts is provided with an exhaust gas channel inside, and multiple baffles are evenly distributed on the outer circumferential sidewalls of the exhaust gas channel. A sealing block is provided at the bottom of each exhaust gas channel, and the sealing block is threadedly connected to the inside of the exhaust gas channel. An air inlet hole communicating with the filter duct is machined at the bottom of each exhaust gas channel, and an air outlet communicating with the filter duct is machined at the top of each exhaust gas channel. An electromagnet is provided inside the exhaust gas channel, and the electromagnet is connected to a piston through a spring. The piston is located inside the exhaust gas channel.

[0007] Furthermore, the polygonal filter frame is a regular hexagonal filter frame, and multiple regular hexagonal filter frames are fixedly connected by connecting plates and stacked to form a honeycomb filter grid. The partition is a corrugated partition, and each partition is provided with an electric heating element.

[0008] Furthermore, the inner circumferential sidewall of the filter duct is equipped with multiple ultraviolet spotlights that irradiate the filter hemispherical protrusions and the polygonal filter frame.

[0009] Furthermore, the air inlet plate is machined with multiple rings of air inlets along the circumference, and each ring of air inlets is arranged in a ring around the central axis of the air inlet plate. The air outlet plate is machined with multiple horizontal air outlets.

[0010] Furthermore, a support plate is provided inside the filter housing, and a motor is provided on the support plate. The output shaft of the motor is fixedly connected to the air intake fan. The air intake fan is close to the air intake plate and located inside the filter housing. The rotation of the air intake fan is used to draw air into the filter housing through the air intake plate.

[0011] Furthermore, the top of the fixed box has a heat-conducting plate that contacts the support plate, and both the fixed box and the support plate are made of heat-conducting materials.

[0012] The beneficial effects of the present invention are as follows: (1) The filter membrane in the present invention filters larger particulate matter in the air. The polygonal filter frame and filter hemispherical protrusion are made of montmorillonite or natural zeolite. Montmorillonite and natural zeolite are both porous silicate minerals. Due to their crystal structure (layered or framework structure), they have high specific surface area, ion exchange capacity and adsorption performance. They can remove a variety of air pollutants in the field of air filtration. The Al2O3-TiO2 composite coating or nano-aluminum-titanium dioxide composite coating coated on each filter hemispherical protrusion can adsorb harmful substances in the air. The vibrating rod can turbulent the air entering the filter duct, improve the adsorption effect of harmful gases in the air, and at the same time avoid large particulate matter in the air from entering the honeycomb filter mesh and causing blockage. It has a high-efficiency filtration effect.

[0013] (2) In this invention, the electric heating element heats the montmorillonite or natural zeolite material. The adsorbed substance will detach from the coating surface due to the thermal kinetic energy exceeding the adsorption force. This can clear the adsorption sites of the montmorillonite or natural zeolite material, restore the adsorption capacity of the composite coating, and prevent it from failing due to adsorption saturation during continued use. The ultraviolet lamp irradiates the composite coating on the filter hemisphere protrusion. The composite coating reflects the ultraviolet light into the microchannels of the honeycomb filter grid, which assists in catalytic regeneration.

[0014] (3) In this invention, the electromagnet is magnetically connected to the piston, which drives the piston to move vertically inside the exhaust gas channel. The desorbed gas enters the exhaust gas channel through the air inlet and then the exhaust gas is extracted out of the filter channel. The exhaust gas passes through the filter membrane and the adsorption filter assembly in sequence for re-filtration, thereby improving the filtration effect of the exhaust gas.

[0015] (4) In this invention, the tension ring will shrink after being heated to the deformation temperature, and a radial gap will be formed between the tension ring and the vibrating rod. At this time, during the intake and recovery process of the piston, the airflow will drive the vibrating rod to vibrate slightly. The vibration will be transmitted to the filter hemispherical protrusion and the polygonal filter frame, so that the dust adhering to the surface of the filter hemispherical protrusion will be accelerated to detach under the dual action of vibration and airflow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the integrated fan filtration device of the present invention.

[0017] Figure 2 yes Figure 1 A structural diagram from another angle.

[0018] Figure 3 This is a structural diagram of the motor and intake fan.

[0019] Figure 4 This is a structural diagram of the fixed box inside the filter housing.

[0020] Figure 5 This is a schematic diagram of the bottom structure of the fixed box.

[0021] Figure 6 This is a schematic diagram of the adsorption filtration component.

[0022] Figure 7 This is a schematic diagram of the structure of an electromagnet, spring, and piston.

[0023] Figure 8 This is a schematic diagram of the component structure on the polygonal filter frame.

[0024] Figure 9 This is a structural diagram of the vibrating rod, heat-conducting plate, and tensioning ring.

[0025] Reference numerals: 1. Air inlet plate; 2. Filter housing; 3. Handle; 4. Air outlet plate; 5. Support plate; 6. Motor; 7. Air intake fan; 8. Filter duct; 9. Filter membrane; 10. Fixing box; 11. Partition plate; 12. Air inlet hole; 13. Exhaust gas passage; 14. Electromagnet; 15. Polygonal filter frame; 16. Filter hemispherical protrusion; 17. Connecting plate; 18. Spring; 19. Piston; 20. Base; 21. Vibrating rod; 22. Heat conduction plate; 23. Tensioning ring; 24. Sealing block; 25. Air outlet. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] like Figures 1 to 5 As shown, the integrated fan filter device in this embodiment is composed of an air inlet plate 1, a filter box 2, a handle 3, an air outlet plate 4, a support plate 5, a motor 6, an air intake fan 7, a filter duct 8, a filter membrane 9, a fixed box 10, and an adsorption filter assembly connected together.

[0028] An air inlet disc 1 is provided on one side of the filter housing 2 for air intake. The air inlet disc 1 has multiple rings of air inlets machined along its circumference, with each ring of air inlets arranged in a ring around the central axis of the air inlet disc 1. Air enters the filter housing 2 through the air inlets of the air inlet disc 1 for filtration. A support plate 5 is provided inside the filter housing 2, and a motor 6 is mounted on the support plate 5. The output shaft of the motor 6 is fixedly connected to an intake fan 7. The intake fan 7 is located close to the air inlet disc 1 and inside the filter housing 2. The rotation of the intake fan 7 is used to draw air into the filter housing 2 through the air inlet disc 1.

[0029] Inside the filter housing 2, there is a fixed box 10. The fixed box 10 has multiple filter ducts 8 that are connected to the air inlet of the air inlet plate 1. Each filter duct 8 has a filter membrane 9 that performs the first filtration of the air. The filter membrane 9 is close to the air inlet plate 1. Inside each filter duct 8, multiple partitions 11 are evenly arranged along the circumference. Between every two adjacent partitions 11, there is an adsorption filter assembly that performs the second adsorption filtration of the air. The adsorption filter assembly is located on one side of the filter membrane 9. The outlet end of the adsorption filter assembly is connected to the outlet end of the filter duct 8. On the other side of the filter housing 2, there is an air outlet plate 4 that is connected to the outlet end of the filter duct 8. The air outlet plate 4 has multiple horizontal air outlets. The direction of each horizontal air outlet is horizontal to each other. The filtered air is blown out through the air outlet plate 4.

[0030] like Figures 6 to 9 As shown, the adsorption filter assembly is composed of a partition 11, an air inlet 12, an exhaust gas channel 13, an electromagnet 14, a polygonal filter frame 15, a filter hemispherical protrusion 16, a connecting plate 17, a spring 18, a piston 19, a base 20, a vibration rod 21, a heat-conducting plate 22, a tensioning ring 23, a sealing block 24, an ultraviolet spotlight, an electric heating element, and an air outlet 25.

[0031] The adsorption filtration assembly consists of multiple polygonal filter frames 15 for filtering gas, arranged between each pair of adjacent partitions 11. The partitions 11 are corrugated, and each partition 11 has an electric heating element. The multiple polygonal filter frames 15 are fixedly connected by connecting plates 17 and stacked to form a filter grid. In this embodiment, the polygonal filter frames 15 are regular hexagonal, and the multiple regular hexagonal filter frames are fixedly connected by connecting plates 17 and stacked to form a honeycomb filter grid. Each polygonal filter frame 15 has a filter hemispherical protrusion 16 on its inner side for filtering gas. The outer surface of each filter hemispherical protrusion 16 is coated with a composite coating, which is either an Al2O3-TiO2 composite coating or a nano-aluminum-titanium dioxide composite coating. The composite coating adsorbs harmful substances in the air. Each filter hemispherical protrusion 16 is provided with a base 20, and a vibrating rod 21 is inserted inside each base 20. A tension ring 23 is provided at the connection between the base 20 and the vibrating rod 21. The tension ring 23 is made of nickel-titanium alloy. The deformation temperature of the tension ring 23 is consistent with the regeneration temperature of the montmorillonite or natural zeolite material, and its deformation temperature is set in the range of -20°C to +120°C. In addition, the surface of the vibrating rod can also be coated with a composite coating to further improve the reflection effect of ultraviolet rays.

[0032] Multiple ultraviolet spotlights are installed on the inner circumferential sidewall of the filter duct 8 to irradiate the filter hemispherical protrusion 16 and the polygonal filter frame 15. The top of the fixed box 10 has a heat-conducting plate 22 that contacts the support plate 5. Both the fixed box 10 and the support plate 5 are made of heat-conducting materials.

[0033] Each of the aforementioned filter ducts 8 is provided with an exhaust gas channel 13. Multiple baffles 11 are evenly distributed on the outer circumferential sidewalls of the exhaust gas channel 13. A sealing block 24 is provided at the bottom of each exhaust gas channel 13. The sealing block 24 is threadedly connected to the inside of the exhaust gas channel 13, which facilitates the disassembly of the sealing block 24. An air inlet 12 communicating with the filter duct 8 is machined at the bottom of each exhaust gas channel 13. An air outlet 25 communicating with the filter duct 8 is machined at the top of each exhaust gas channel 13. The desorbed material on the filter assembly enters the interior of the exhaust gas channel 13 through the air inlet 12. An electromagnet 14 is provided in the exhaust gas channel 13. The electromagnet 14 is connected to a piston 19 through a spring 18. The piston 19 is located in the exhaust gas channel 13. The piston 19 draws the exhaust gas into the exhaust gas channel 13 and simultaneously forces the air in the exhaust gas channel 13 into the filter duct 8 for repeated filtration.

[0034] The working principle of this embodiment is as follows: (1) First filtration of air: Start motor 6, the output shaft of motor 6 drives the intake fan 7 to rotate, and the air enters the filter box 2 through the multi-ring air inlet of the air inlet plate 1. The air is filtered for the first time through the filter membrane 9 inside the multiple filter air ducts 8 on the fixed box 10. The filter membrane 9 is used to filter larger particulate matter in the air.

[0035] (2) Secondary adsorption filtration of air: After the first filtration, the air enters multiple adsorption filtration components, which adsorb harmful substances in the air. The polygonal filter frame 15 is made of montmorillonite or natural zeolite, and the filter hemispherical protrusions 16 are also made of montmorillonite or natural zeolite. Montmorillonite and natural zeolite are both porous silicate minerals. Due to their crystal structure (layered or framework structure), they have high specific surface area, ion exchange capacity and adsorption performance. In the field of air filtration, they remove a variety of air pollutants, such as small molecule inorganic gases (CO2, NOx), formaldehyde, benzene and other substances. The multiple filter hemispherical protrusions 16 in each polygonal filter frame 15 are coated with Al2O3-T The iO2 composite coating or nano-aluminum-titanium dioxide composite coating can adsorb harmful substances in the air. In the Al2O3-TiO2 composite coating, TiO2 provides basic polar adsorption sites and pore structure, while Al2O3 enhances the adsorption of highly polar substances and specific inorganic pollutants. It can adsorb organic pollutants such as formaldehyde, acetaldehyde, and acetone, as well as particulate matter and suspended impurities such as PM2.5, dust, pollen, and mold spores. The tension ring 23 supports the vibrating rod in the filtering state. The vibrating rod 21 can turbulent the air entering the filter duct 8, improving the adsorption effect of harmful gases in the air. At the same time, it can prevent large particles in the air from entering the honeycomb filter mesh and causing blockage, and it will not generate continuous noise from vibration. The air after the second adsorption and filtration is blown out through multiple horizontal air outlets of the air outlet plate 4.

[0036] When it is necessary to desorb and regenerate harmful substances adsorbed by the polygonal filter frame 15 and the filter hemispherical protrusion 16, the montmorillonite or natural zeolite material is heated. Simultaneously, the motor 6 generates heat during operation. This heat is transferred through the support plate 5 and the heat-conducting plate 22 to the adsorption filter assembly inside the fixed box 10. The electric heating element heats the montmorillonite or natural zeolite material to a temperature above 55°C. The adsorbed substances detach from the coating surface because their thermal kinetic energy exceeds the adsorption force. This process clears the adsorption sites of the montmorillonite or natural zeolite material, restoring the composite coating's adsorption capacity and preventing it from failing due to adsorption saturation during continued use. An ultraviolet lamp irradiates the composite coating on the filter hemispherical protrusion 16. The composite coating reflects the ultraviolet light into the microchannels of the honeycomb filter mesh, assisting the catalytic regeneration of the polygonal filter frame 15 and the filter hemispherical protrusion 16. Through the synergistic effect of photochemical and thermal action, the desorption rate is improved.

[0037] In this embodiment, after the harmful gas is adsorbed by the zeolite material, it undergoes photocatalytic decomposition by ultraviolet light and the titanium dioxide coating. The desorbed gas is not the original adsorbed waste gas; some of the residual, undecomposed harmful gas will be adsorbed again. This desorption process is a material regeneration process. Regular desorption is the key to maintaining its long-term high-efficiency adsorption performance. By actively removing residual pollutants through pyrolysis and ultraviolet irradiation, the material's adsorption performance is restored, avoiding the need for frequent replacement of parts or the use of filters with high regeneration costs.

[0038] When it is necessary to desorb and regenerate the harmful substances adsorbed by the polygonal filter frame 15 and the filter hemispherical protrusion 16, the electromagnet 14 is activated. When the electromagnet 14 is energized, it is magnetically connected to the piston 19. The electromagnet 14 and the piston 19 are brought close together, causing the piston 19 to move vertically inside the exhaust gas channel 13. The desorbed gas is then drawn into the exhaust gas channel 13 through the air inlet 12 and then extracted out of the filter duct 8 through the air outlet 25. The motor 6 is then activated again, and the exhaust gas passes through the filter membrane 9 and the adsorption filter assembly for re-filtration. This allows the exhaust gas to be extracted above the adsorption filter assembly more effectively, extending the residence time of the exhaust gas and enabling better filtration.

[0039] Meanwhile, in the desorption and regeneration state, the tension ring 23 will deform after being heated to the deformation temperature, and a radial gap will be formed between the tension ring 23 and the vibrating rod 21. At this time, during the intake and recovery process, the airflow passing through the vibrating rod 21 will cause it to vibrate slightly. The vibration will be transmitted to the filter hemispherical protrusion 16 and the polygonal filter frame 15, so that the dust adhering to the surface of the filter hemispherical protrusion 16 will be accelerated to detach under the dual action of vibration and airflow.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An integrated fan filtration device, characterized in that: An air inlet plate (1) for air intake is provided on one side of the filter box (2). Air enters the filter box (2) through the air inlet of the air inlet plate (1) for filtration. A fixed box (10) is provided inside the filter box (2). Multiple filter ducts (8) connected to the air inlet of the air inlet plate (1) are provided on the fixed box (10). A filter membrane (9) for the first filtration of air is provided in each filter duct (8). The filter membrane (9) is close to the air inlet plate (1). Multiple partitions (11) are evenly arranged in the circumferential direction inside each filter duct (8). An adsorption filter assembly for the second adsorption filtration of air is provided between every two adjacent partitions (11). The adsorption filter assembly is located on one side of the filter membrane (9). The outlet end of the adsorption filter assembly is connected to the outlet end of the filter duct (8). An air outlet plate (4) connected to the outlet end of the filter duct (8) is provided on the other side of the filter box (2). The filtered air is blown out through the air outlet plate (4). The adsorption and filtration assembly is as follows: between each pair of adjacent partitions (11), there are multiple polygonal filter frames (15) for filtering gas. The multiple polygonal filter frames (15) for filtering gas are fixedly connected by connecting plates (17) and stacked to form a filter grid. Each polygonal filter frame (15) has a filter hemispherical protrusion (16) for filtering gas on its inner side. The outer surface of each filter hemispherical protrusion (16) is coated with a composite coating. The composite coating adsorbs harmful substances in the air. The polygonal filter frame (15) is made of montmorillonite or natural zeolite, the filter hemispherical protrusion (16) is made of montmorillonite or natural zeolite, and the composite coating is an Al2O3-TiO2 composite coating or a nano-aluminum-titanium dioxide composite coating. Each of the filter hemispherical protrusions (16) is provided with a base (20), and each base (20) is provided with a vibrating rod (21). A tensioning ring (23) is provided at the connection between the base (20) and the vibrating rod (21). The tensioning ring (23) is made of nickel-titanium alloy and deforms when heated.

2. The integrated fan filtration device according to claim 1, characterized in that: Each of the aforementioned filter ducts (8) is provided with an exhaust gas channel (13). Multiple baffles (11) are evenly distributed on the outer circumferential sidewall of the exhaust gas channel (13). Each exhaust gas channel (13) is provided with a sealing block (24) at the bottom. The sealing block (24) is threadedly connected to the exhaust gas channel (13). Each exhaust gas channel (13) is provided with an air inlet (12) that communicates with the filter duct (8) at the bottom. Each exhaust gas channel (13) is provided with an air outlet (25) that communicates with the filter duct (8) at the top. An electromagnet (14) is provided in the exhaust gas channel (13). The electromagnet (14) is connected to the piston (19) through a spring (18). The piston (19) is located in the exhaust gas channel (13).

3. The integrated fan filtration device according to claim 1, characterized in that: The polygonal filter frame (15) is a regular hexagonal filter frame. Multiple regular hexagonal filter frames are fixedly connected by connecting plates (17) and stacked to form a honeycomb filter grid. The partition (11) is a wavy partition, and each partition (11) is provided with an electric heating element.

4. The integrated fan filtration device according to claim 1, characterized in that: The inner circumferential sidewall of the filter duct (8) is provided with multiple ultraviolet spotlights that irradiate the filter hemispherical protrusion (16) and the polygonal filter frame (15).

5. The integrated fan filtration device according to claim 1, characterized in that: The air inlet plate (1) is machined with multiple air inlets along the circumference, and each air inlet is arranged in a ring around the central axis of the air inlet plate (1). The air outlet plate (4) is machined with multiple horizontal air outlets.

6. The integrated fan filtration device according to claim 1, characterized in that: The filter box (2) is provided with a support plate (5), and a motor (6) is provided on the support plate (5). The output shaft of the motor (6) is fixedly connected to the air intake fan (7). The air intake fan (7) is close to the air intake plate (1) and located inside the filter box (2). The air intake fan (7) rotates to draw air into the filter box (2) through the air intake plate (1).

7. The integrated fan filtration device according to claim 6, characterized in that: The top of the fixed box (10) has a heat-conducting plate (22) that contacts the support plate (5). Both the fixed box (10) and the support plate (5) are made of heat-conducting materials.

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