An air purification device

Abstract

This utility model relates to the field of air purification technology and discloses an air purification device, including a housing. The housing contains, from top to bottom, an air inlet, a first filter layer, an air intake layer, a second filter layer, a sterilization layer, a third filter layer, and an air outlet. A first filter plate is installed in the first filter layer. A fan is installed in the air intake layer. A second filter plate is installed in the second filter layer. An air supply channel with openings at the top and bottom is fixedly installed in the sterilization layer. A third filter plate is installed in the third filter layer. The air supply channel is installed between the second and third filter plates at its upper and lower ends. A first ultraviolet lamp is fixedly installed in the sterilization layer within the air supply channel. This utility model has the following advantages and effects: it can achieve all-dimensional purification of the air drawn in through the air inlet, improving air purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an air purification device. Background Technology

[0002] With increasing public concern about indoor air quality, air purifiers have become essential equipment in homes, hospitals, offices, and other places. Traditional air purification technologies mainly remove particulate matter and some gaseous pollutants from the air through HEPA filtration, activated carbon adsorption, or negative ion release, but they are significantly inadequate in sterilization and disinfection. In particular, ordinary filtration technologies cannot completely kill bacteria, viruses, and other microorganisms; they can only physically intercept them. After long-term use, the filter may become a breeding ground for microorganisms, causing secondary pollution.

[0003] An air purifier with authorization announcement number CN212179098U includes a housing, a shielded door drive device, a human proximity sensor, and a shielded door. The housing has an air inlet on one side, a sterilization layer inside the housing cavity, and an air outlet on the other side. The sterilization layer contains a built-in ultraviolet germicidal lamp, and an ultraviolet shielding layer is laid along its inner wall. A window is opened on the housing corresponding to the sterilization layer, and the shielded door is covered with an ultraviolet shielding layer and is movable at the window. The above device has the following shortcomings: when the shielded door is open, some of the air drawn in through the air inlet will overflow through the window, reducing the air purification rate. Furthermore, the second filter layer (manganese dioxide) is exposed to the air; manganese dioxide easily absorbs moisture, leading to particle agglomeration and pore blockage, reducing catalytic efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an air purification device that can improve the air purification rate.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an air purification device, comprising a housing, wherein an air inlet, a first filter layer, an air intake layer, a second filter layer, a sterilization layer, a third filter layer, and an air outlet are arranged sequentially from top to bottom inside the housing; a first filter plate is installed in the first filter layer; a fan is installed in the air intake layer; a second filter plate is installed in the second filter layer; an air supply channel with openings at the top and bottom is fixedly installed in the sterilization layer; a third filter plate is installed in the third filter layer; the upper and lower ends of the air supply channel are installed between the second filter plate and the third filter plate; and a first ultraviolet lamp tube located in the air supply channel is fixedly installed in the sterilization layer.

[0006] By adopting the above technical solution, after the purification device is started, the fan is driven by a motor installed in the housing. Air enters the housing from the air inlet. When passing through the first filter layer, large particulate matter and fibrous pollutants are filtered. When passing through the second filter layer, fine particulate matter is filtered. When passing through the sterilization layer, the first ultraviolet lamp sterilizes the air. When passing through the third filter layer (manganese dioxide), gaseous pollutants are adsorbed, thus achieving all-dimensional purification. The second and third filter plates are connected to the inside of the air supply channel, which can effectively prevent air leakage, thereby improving the air purification rate. At the same time, it can prevent the third filter layer from particle agglomeration or pore blockage caused by exposure to the air.

[0007] A further feature of this invention is that, from the direction of the second filter plate to the third filter plate, the cross-sectional area of ​​the upper middle part of the air supply channel first increases and then decreases.

[0008] By adopting the above technical solution, when air passes through the second filter plate, the air is introduced into the middle of the air supply channel from the upper end of the air supply channel. As the cross-section of the middle of the air supply channel increases, that is, the channel widens, the air velocity decreases, prolonging the contact time between the air and the first ultraviolet lamp, thereby improving the inactivation efficiency of ultraviolet light on microorganisms in the air. Subsequently, the air passing through the middle of the air supply channel is introduced into the third filter plate through the lower end of the air supply channel, so that the third filter plate can filter the air in a concentrated manner.

[0009] A further feature of this invention is that, from the direction of the second filter plate to the third filter plate, the cross-sectional area of ​​the upper end of the air supply channel gradually decreases and the cross-sectional area of ​​the lower end gradually increases.

[0010] By adopting the above technical solution, the air passing through the second filter plate is introduced into the air supply channel through the upper end of the air supply channel, which helps to slightly accelerate the air into the middle of the air supply channel, thereby improving the air passage efficiency. The sterilized air in the air supply channel is introduced into the third filter plate through the lower end of the air supply channel, which helps to increase the contact area between the air and the third filter plate, thereby improving the filtration efficiency.

[0011] A further feature of this invention is that: sterilization ports communicating with the sterilization layer are provided on the four sides of the housing, and a shielding component is provided at each sterilization port. The shielding component includes two baffles that slide in a mirror manner and cover the sterilization port. A second ultraviolet lamp tube is installed on the air supply channel facing the sterilization port.

[0012] By adopting the above technical solution, the baffle is used to open and close the sterilization port. When there is no one near the shell, the sterilization port is opened, and the second ultraviolet lamp sterilizes and disinfects the space near the purification device. When there are people near the shell, the sterilization port is closed.

[0013] The present invention is further configured as follows: a second fixed plate with a second filter port in the middle is fixedly installed on the second filter layer, the second filter plate is fixed at the second filter port, a third fixed plate with a third filter port in the middle is fixedly installed on the third filter layer, the third filter plate is fixed at the third filter port, the upper and lower ends of the air supply channel are fixedly installed between the second fixed plate and the third fixed plate, the shielding assembly further includes a vertical screw rod rotatably connected between the second fixed plate and the third fixed plate and a vertical guide rod fixedly connected between the second fixed plate and the third fixed plate, the upper and lower ends of the vertical screw rod are provided with reverse threads, one side of the baffle is threaded to the vertical screw rod and the other side is inserted and slidably connected to the vertical guide rod, and a drive motor for driving the vertical screw rod to rotate is fixedly installed on the second fixed plate.

[0014] By adopting the above technical solution, the drive motor is started, which drives multiple vertical screws to rotate. The vertical screws then drive the upper and lower baffles to slide in opposite directions on the vertical guide rod, which is used to open or close the sterilization port.

[0015] A further feature of this invention is that a first sprocket is fixed to the output end of the drive motor, a second sprocket is fixed to the end of the vertical lead screw, and a chain is sleeved between the first sprocket and the second sprocket.

[0016] By adopting the above technical solution, the drive motor is started, and the vertical screw is driven to rotate through the first sprocket, the second sprocket and the chain, thereby controlling the movement of the baffle to open or close the sterilization port; by controlling the rotation of multiple vertical screws by one drive motor, the cost can be effectively controlled.

[0017] A further feature of this invention is that an opening is provided in the middle of the air supply channel, and the second ultraviolet lamp is fixedly installed at the opening, with the inner ring of the second ultraviolet lamp facing the inside of the air supply channel and the outer ring facing the outside of the air supply channel.

[0018] By adopting the above technical solution, the second ultraviolet lamp can sterilize the air in the air supply channel and improve the sterilization efficiency, and can sterilize the space around the shell and expand the sterilization area when the sterilization port is opened.

[0019] A further feature of this invention is that the inner wall of the sterilization layer and the inner wall of the baffle are covered with a fluorotitanium coating shielding layer.

[0020] By adopting the above technical solutions, the ultraviolet shielding layer blocks ultraviolet rays, preventing them from passing through the shell and irradiating the human body, thereby avoiding harm to the human body and improving safety. Some fluorotitanium coatings can catalytically decompose residual ozone, avoiding harm to the human body and equipment.

[0021] A further feature of this invention is that a human proximity sensor is installed outside the housing, and the human proximity sensor is connected to the drive motor via a controller.

[0022] By adopting the above technical solution, when a human body approaches the shell, the human body proximity sensor sends a signal to the controller, and the controller controls the drive motor to start and move the baffle to close the sterilization port; when a human body moves away from the shell, the human body proximity sensor sends a signal to the controller, and the controller controls the drive motor to start and move the baffle to open the sterilization port, thus realizing intelligent control of the sterilization port.

[0023] The beneficial effects of this utility model are:

[0024] 1. The second and third filter plates are connected to the inside of the air supply channel, which can effectively prevent air from overflowing, thereby improving the air purification rate. At the same time, it can prevent the third filter layer from being exposed to the air and causing particle agglomeration or pore blockage.

[0025] 2. When the air passes through the second filter plate, the air is guided into the middle of the air supply channel from the upper end of the air supply channel. As the cross-section of the middle of the air supply channel increases, that is, the channel becomes wider, the air velocity decreases, prolonging the contact time between the air and the first ultraviolet lamp, thereby improving the inactivation efficiency of ultraviolet light on microorganisms in the air.

[0026] 3. When a human body approaches the shell, the human body proximity sensor sends a signal to the controller, which then controls the drive motor to start and move the baffle to close the sterilization port; when a human body moves away from the shell, the human body proximity sensor sends a signal to the controller, which then controls the drive motor to start and move the baffle to open the sterilization port, thus realizing intelligent control of the sterilization port. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0030] Figure 3 This is a schematic diagram of the shielding component structure in this utility model.

[0031] Figure 4 This is a schematic diagram showing the connection relationship between the air supply channel, the first ultraviolet lamp, and the second ultraviolet lamp in this utility model.

[0032] In the diagram, 1. Shell; 2. Air inlet; 3. Air inlet layer; 4. Sterilization layer; 5. Air outlet; 6. First filter plate; 7. Fan; 8. Second filter plate; 9. Air supply channel; 10. Third filter plate; 11. First ultraviolet lamp; 12. Sterilization port; 13. Shielding assembly; 131. Baffle; 132. Vertical lead screw; 133. Vertical guide rod; 134. Drive motor; 14. Second ultraviolet lamp; 15. Second fixing plate; 16. Third fixing plate; 17. First sprocket; 18. Second sprocket; 19. Chain; 20. Through port. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] Example 1, an air purification device, such as Figure 1-2 As shown, the device includes a housing 1. Inside the housing 1, from top to bottom, are arranged an air inlet 2, a first filter layer, an air intake layer 3, a second filter layer, a sterilization layer 4, a third filter layer, and an air outlet 5. A first filter plate 6 is installed in the first filter layer. A fan 7 is installed in the air intake layer 3. A second filter plate 8 is installed in the second filter layer. An air supply channel 9 with openings at the top and bottom is fixedly installed in the sterilization layer 4. A third filter plate 10 is installed in the third filter layer. The upper and lower ends of the air supply channel 9 are installed between the second filter plate 8 and the third filter plate 10. A first ultraviolet lamp 11 is fixedly installed in the sterilization layer 4, located within the air supply channel 9. After the purification device is started, the fan 7, installed in the housing 1... Driven by an internal motor, air enters the housing 1 through the air inlet 2. It passes through the first filter layer (pre-filter) to filter large particles and fibrous pollutants, the second filter layer (HEPA high-efficiency filter) to filter fine particles, the first ultraviolet lamp 11 sterilizes the air as it passes through the sterilization layer 4, and the third filter layer (activated carbon / manganese dioxide composite layer) adsorbs gaseous pollutants, achieving comprehensive purification. The second filter plate 8 and the third filter plate 10 are connected to the air supply channel 9, effectively preventing air leakage and thus improving the air purification rate. This also prevents particle agglomeration or pore blockage of the third filter layer due to exposure to air.

[0035] The present invention is further configured such that, from the direction of the second filter plate 8 to the third filter plate 10, the cross-sectional area of ​​the upper middle part of the air supply channel 9 first increases and then decreases. When the air passes through the second filter plate 8, the air is introduced into the middle part of the air supply channel 9 from the upper end. Due to the increase in the cross-sectional area of ​​the middle part of the air supply channel 9, that is, the channel becomes wider, the air velocity decreases, prolonging the contact time between the air and the first ultraviolet lamp tube 11, thereby improving the inactivation efficiency of ultraviolet light on microorganisms in the air. Subsequently, the air passing through the middle part of the air supply channel 9 is introduced into the third filter plate 10 through the lower end of the air supply channel 9, so that the third filter plate 10 performs concentrated filtration of the air.

[0036] The present invention is further configured such that, from the second filter plate 8 to the third filter plate 10, the cross-sectional area of ​​the upper end of the air supply channel 9 gradually decreases and the cross-sectional area of ​​the lower end gradually increases. This allows the air passing through the second filter plate 8 to be introduced into the air supply channel 9 through the upper end of the air supply channel 9, which helps to slightly accelerate the air as it enters the middle of the air supply channel 9 (the air velocity after entering the middle of the air supply channel 9 is still lower than the initial velocity), thereby improving the air passage efficiency. The sterilized air in the air supply channel 9 is introduced into the third filter plate 10 through the lower end of the air supply channel 9, which helps to increase the contact area between the air and the third filter plate 10, thereby improving the filtration efficiency.

[0037] like Figure 2-4 As shown, the housing 1 has sterilization ports 12 on its four sides that communicate with the sterilization layer 4. Each sterilization port 12 is equipped with a shielding component 13. The shielding component 13 includes two baffles 131 that slide in a mirror image and cover the sterilization port 12. A second ultraviolet lamp 14 is installed on the air supply channel 9, facing the sterilization port 12. The baffles 131 are used to open and close the sterilization port 12. When there is no one near the housing 1, the sterilization port 12 is opened and the second ultraviolet lamp 14 sterilizes and disinfects the space near the purification device. When there is someone near the housing 1, the sterilization port 12 is closed.

[0038] like Figure 3As shown, the second filter layer is fixedly installed with a second fixing plate 15 having a second filter port in the middle, and the second filter plate 8 is fixed at the second filter port. The third filter layer is fixedly installed with a third fixing plate 16 having a third filter port in the middle, and the third filter plate 10 is fixed at the third filter port. The upper and lower ends of the air supply channel 9 are fixedly installed between the second fixing plate 15 and the third fixing plate 16. The shielding assembly 13 also includes a vertical screw rod 132 rotatably connected between the second fixing plate 15 and the third fixing plate 16 and a screw rod 132 fixedly connected between the second fixing plate 15 and the third fixing plate 16. The vertical guide rod 133 between the plates 16 has a vertical lead screw 132 with reverse threads at both ends. One side of the baffle 131 is threaded to the vertical lead screw 132, and the other side is inserted and slides on the vertical guide rod 133. A drive motor 134 that drives the vertical lead screw 132 to rotate is fixedly installed on the second fixed plate 15. By starting the drive motor 134, the drive motor 134 drives multiple vertical lead screws 132 to rotate, thereby the vertical lead screw 132 drives the upper and lower baffles 131 to slide in opposite directions on the vertical guide rod 133, which is used to open or close the sterilization port 12.

[0039] The present invention is further configured such that a first sprocket 17 is fixed at the output end of the drive motor 134, a second sprocket 18 is fixed at the end of the vertical lead screw 132, and a chain 19 is sleeved between the first sprocket 17 and the second sprocket 18. When the drive motor 134 is started, the vertical lead screw 132 is driven to rotate through the first sprocket 17, the second sprocket 18 and the chain 19, thereby controlling the movement of the baffle 131 to open or close the sterilization port 12. By controlling the rotation of multiple vertical lead screws 132 through one drive motor 134, the cost can be effectively controlled.

[0040] The present invention is further configured such that an opening 20 is provided in the middle of the air supply channel 9, and a second ultraviolet lamp 14 is fixedly installed at the opening 20. The inner ring of the second ultraviolet lamp 14 faces the inside of the air supply channel 9 and the outer ring faces the outside of the air supply channel 9. The second ultraviolet lamp 14 can sterilize the air inside the air supply channel 9 and improve the sterilization efficiency. When the sterilization port 12 is opened, it can sterilize the space around the shell 1 and expand the sterilization area. The second ultraviolet lamp 14 uses UVC ultraviolet light with a wavelength of 254nm, which can quickly inactivate most pathogens, has no ozone risk, and can balance efficient sterilization with human safety.

[0041] The present invention is further configured such that the inner wall of the sterilization layer 4 and the inner wall of the baffle 131 are covered with a fluorotitanium coating shielding layer. The ultraviolet shielding layer blocks ultraviolet rays, preventing ultraviolet rays from passing through the shell 1 and irradiating the human body, thereby avoiding the harm of ultraviolet rays to the human body and improving the safety of use. Some of the fluorotitanium coating can catalyze the decomposition of ozone, avoiding harm to the human body and equipment.

[0042] The present invention is further configured such that a human proximity sensor is installed on the outside of the housing 1. The human proximity sensor is connected to the drive motor 134 through a controller. When a human body approaches the housing 1, the human proximity sensor sends a signal to the controller, and the controller controls the drive motor 134 to start and move the baffle 131 to close the sterilization port 12. When a human body moves away from the housing 1, the human proximity sensor sends a signal to the controller, and the controller controls the drive motor 134 to start and move the baffle 131 to open the sterilization port 12, thereby realizing the intelligent control switch of the sterilization port 12. When the air purification device is working, the fan of the drive fan 7 and the first ultraviolet lamp 11 are powered. The fan 7 operates to introduce air from the air inlet 2, and the first ultraviolet lamp 11 sterilizes and disinfects the air entering the sterilization layer 4.

[0043] The present invention is further configured such that the second ultraviolet lamp 14 can be connected to the same power source as the first ultraviolet lamp 11. That is, when the air purification device is working, the first ultraviolet lamp 11 and the second ultraviolet lamp 14 are powered on, and the first ultraviolet lamp 11 and the second ultraviolet lamp 14 are kept in a normally open state to efficiently sterilize the air in the air supply channel 9.

[0044] The present invention is further configured such that the power supply of the second ultraviolet lamp 14 can also be connected to the controller independently. That is, when a human body approaches the housing 1, the sensor sends a signal, and the controller (MCU) controls the power supply of the second ultraviolet lamp 14 to be cut off. At the same time, it controls the drive motor 134 to start and drive the vertical screw 132 to rotate, and the baffle 131 to slide and close the sterilization port 12, which can reduce energy consumption to a certain extent.

Claims

1. An air purification device, comprising a housing (1), wherein an air inlet (2), a first filter layer, an air intake layer (3), a second filter layer, a sterilization layer (4), a third filter layer, and an air outlet (5) are arranged sequentially from top to bottom within the housing (1), characterized in that: The first filter layer is equipped with a first filter plate (6), the air inlet layer (3) is equipped with a fan (7), the second filter layer is equipped with a second filter plate (8), the sterilization layer (4) is equipped with an air supply channel (9) with openings at the top and bottom, the third filter layer is equipped with a third filter plate (10), the air supply channel (9) is installed at both ends between the second filter plate (8) and the third filter plate (10), and the sterilization layer (4) is equipped with a first ultraviolet lamp tube (11) located in the air supply channel (9).

2. The air purification device according to claim 1, characterized in that: From the second filter plate (8) to the third filter plate (10), the cross-sectional area of ​​the upper middle part of the air supply channel (9) first increases and then decreases.

3. An air purification device according to claim 2, characterized in that: From the second filter plate (8) to the third filter plate (10), the cross-sectional area of ​​the upper end of the air supply channel (9) gradually decreases and the cross-sectional area of ​​the lower end gradually increases.

4. An air purification device according to claim 1, characterized in that: The housing (1) has sterilization ports (12) on its four sides that communicate with the sterilization layer (4). Each sterilization port (12) is provided with a shielding component (13). The shielding component (13) includes two baffles (131) that slide in a mirror image and cover the sterilization port (12). The air supply channel (9) is equipped with a second ultraviolet lamp tube (14) facing the sterilization port (12).

5. An air purification device according to claim 4, characterized in that: The second filter layer is fixedly installed with a second fixing plate (15) having a second filter port in the middle, and the second filter plate (8) is fixed at the second filter port. The third filter layer is fixedly installed with a third fixing plate (16) having a third filter port in the middle, and the third filter plate (10) is fixed at the third filter port. The upper and lower ends of the air supply channel (9) are fixedly installed between the second fixing plate (15) and the third fixing plate (16). The shielding assembly (13) also includes a component rotatably connected to the second fixing plate (15). 15) A vertical lead screw (132) between the third fixed plate (16) and a vertical guide rod (133) fixedly connected between the second fixed plate (15) and the third fixed plate (16). The vertical lead screw (132) has reverse threads at both ends. The baffle (131) is threaded to the vertical lead screw (132) on one side and inserted and slidably connected to the vertical guide rod (133) on the other side. A drive motor (134) for driving the vertical lead screw (132) to rotate is fixedly installed on the second fixed plate (15).

6. An air purification device according to claim 5, characterized in that: The output end of the drive motor (134) is fixed with a first sprocket (17), and the end of the vertical screw (132) is fixed with a second sprocket (18). A chain (19) is sleeved between the first sprocket (17) and the second sprocket (18).

7. An air purification device according to claim 5, characterized in that: The air supply channel (9) has an opening (20) in the middle. The second ultraviolet lamp (14) is fixedly installed at the opening (20). The inner ring of the second ultraviolet lamp (14) faces the inside of the air supply channel (9), and the outer ring faces the outside of the air supply channel (9).

8. An air purification device according to claim 5, characterized in that: The inner wall of the sterilization layer (4) and the inner wall of the baffle (131) are covered with a fluorotitanium coating shielding layer.

9. An air purification device according to claim 5, characterized in that: A human proximity sensor is installed on the outside of the housing (1), and the human proximity sensor is connected to the drive motor (134) through a controller.

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