Air filter with laser disinfection sterilization

Abstract

The application discloses an air filter screen with laser disinfection and sterilization, and relates to the technical field of air filtration. The air filter screen comprises an air passage and a laser disinfecting device. The air passage has an inlet, an outlet and a filtering and disinfecting cavity between the inlet and the outlet. The laser disinfecting device comprises at least one laser disinfecting unit. The laser disinfecting unit comprises a laser emitter and a laser scattering mechanism connected by an optical path. The laser scattering mechanism is provided with a plurality of air holes. The emitted laser of the laser emitter can be transmitted to the laser scattering mechanism and filled with scattered laser in the laser scattering mechanism to form a powerful disinfection area. The scattered laser can irradiate on the passing air through the inner wall of each air hole. The application not only strengthens the efficiency of physical filtration, but also gives the filter screen the ability to actively kill microorganisms. Based on the characteristics of laser scattering and disinfection and sterilization, the application can completely disinfect and sterilize viruses and bacteria in the air, greatly improve the efficiency of air disinfection and sterilization, and ensure the safety of the air flowing out of the outlet.

Description

Technical Field

[0001] This invention relates to the field of air filtration technology, and in particular to an air filter with laser sterilization function. Background Technology

[0002] Traditional air filters, such as pre-filters, medium-efficiency filters, and high-efficiency particulate filters (HEPA filters), mainly rely on physical interception to remove airborne particulate matter. Although HEPA filters can filter out particulate matter larger than 0.3 micrometers, their interception efficiency decreases for smaller viruses and bacteria. Traditional filters usually do not have the ability to actively kill microorganisms; they can only rely on interception and adsorption to reduce the number of microorganisms, resulting in low air disinfection efficiency.

[0003] Some air filters attempt to enhance disinfection by adding chemical disinfectants. However, chemical disinfectants may have negative effects on human health, and long-term use may lead to drug resistance in microorganisms. In addition, the volatility and residue of chemical disinfectants also need to be considered to ensure that they do not cause secondary pollution to indoor air quality.

[0004] Given the problems of low efficiency and poor safety of existing air filters in disinfecting harmful microorganisms such as viruses and bacteria, this paper proposes an air filter to improve air disinfection efficiency and safe use. Summary of the Invention

[0005] The purpose of this invention is to provide an air filter with laser disinfection and sterilization capabilities to solve the problems existing in the prior art and improve air disinfection efficiency and safe use.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides an air filter with laser disinfection and sterilization capabilities, comprising an air channel and a laser sterilizer; the air channel has an inlet, an outlet, and a filtration and disinfection chamber located between the inlet and the outlet; the laser sterilizer includes at least one laser sterilization unit, each laser sterilization unit comprising a laser emitter and a laser scattering mechanism connected by an optical path; the laser scattering mechanisms of each laser sterilization unit are arranged sequentially at intervals within the filtration and disinfection chamber; each laser scattering mechanism has multiple vents, allowing air on one side of the laser scattering mechanism to enter the other side of the laser scattering mechanism only through each vent; the emitted laser from the laser emitter can be transmitted to the laser scattering mechanism and fill the laser scattering mechanism with scattered laser light; the scattered laser light can penetrate the inner wall of each vent and irradiate the passing air.

[0008] Preferably, the laser scattering mechanism includes a frame and a central plate; the frame is fixedly disposed around the central plate; the central plate is transparent; and the central plate has ventilation holes; a laser reflective layer is disposed between the inner side of the frame and the outer circumferential wall of the central plate.

[0009] Preferably, the laser sterilizer includes multiple laser sterilization units; in the air circulation path, the laser scattering mechanisms of each laser sterilization unit are arranged in parallel intervals within the filter sterilization chamber; and the density of the central plates of each laser scattering mechanism is the same or different; and the aperture of the vent holes on each central plate is the same or different.

[0010] Preferably, it further includes a controller, an alarm, and a laser power meter; the controller is communicatively connected to both the alarm and the laser power meter; the laser power meter is disposed within the filtration and disinfection chamber having the laser scattering mechanism.

[0011] Preferably, the filter and disinfection chambers located on both sides of the entire laser scattering mechanism are respectively provided with openable and closable closed doors; a cleaning channel is provided on the air channel, and the cleaning channel is connected to the filter and disinfection chamber located between the two closed doors; and cleaning liquid or cleaning gas flows in the cleaning channel.

[0012] Preferably, in the airflow direction within the filtration and disinfection chamber, a primary filter is provided at the front end of all the laser scattering mechanisms; and a HEPA filter is provided at the rear end of all the laser scattering mechanisms.

[0013] Preferably, the wavelength of the emitted laser from the laser emitter is 266nm. 。

[0014] Preferably, the emitted laser from the laser emitter is transmitted to the laser scattering mechanism via a laser reflector.

[0015] Preferably, the material of the middle plate is at least one of PET, PP or PVC.

[0016] Preferably, the laser reflective layer is a reflector or a coating that reflects laser light.

[0017] The present invention achieves the following technical effects compared to the prior art:

[0018] The air filter with laser disinfection and sterilization provided by this invention, through a laser scattering mechanism with ventilation holes, not only has the efficiency of traditional physical filtration, but also, in conjunction with a laser emitter, gives it the ability to actively disinfect microorganisms with laser. The laser scattering mechanism is cleverly set in the air channel, and the energy of the laser is sufficient to destroy the cell structure of viruses and bacteria. Based on the laser scattering and disinfection and sterilization characteristics, viruses and bacteria present in the air are thoroughly eliminated, so that air disinfection is no longer just at the level of interception and adsorption, but truly achieves purification and sterilization from the source, greatly improving the efficiency of air disinfection and ensuring the safety of the outflowing air. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic cross-sectional view of the overall internal structure of an air filter with laser disinfection and sterilization provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of an air filter with laser disinfection and sterilization provided by the present invention when the closed door is in the open state;

[0022] Figure 3 This is a schematic diagram of the internal structure of the air filter with laser disinfection and sterilization provided by the present invention when the sealed door is in the closed state;

[0023] Figure 4 A schematic diagram of the laser scattering mechanism in an air filter with laser disinfection and sterilization provided by the present invention.

[0024] In the picture:

[0025] 10-Air passage; 11-Inlet; 12-Exit;

[0026] 20-Laser disinfection unit; 21-Laser emitter; 22-Laser scattering mechanism; 221-Center plate; 222-Frame; 223-Laser reflective layer; 224-Ventilation hole; 23-Laser power meter;

[0027] 30 - Cleaning channel;

[0028] 40 - First closed door;

[0029] 50 - Second enclosed door;

[0030] 60-Primary filter;

[0031] 70-HEPA filter. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The purpose of this invention is to provide an air filter with laser disinfection and sterilization capabilities to solve the problems existing in the prior art and improve air disinfection efficiency and safe use.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] This embodiment provides an air filter with laser sterilization function, such as... Figures 1-4 As shown, the device includes an air channel 10 (enclosed by four walls) and a laser sterilizer. The air channel 10 has an inlet 11, an outlet 12, and a filter sterilization chamber located between the inlet 11 and the outlet 12. The laser sterilizer includes at least one laser sterilization unit 20, which includes a laser emitter 21 and a laser scattering mechanism 22 connected by an optical path (one laser scattering mechanism 22 can correspond to one laser emitter 21; or multiple laser scattering mechanisms 22 can share one laser emitter 21, in which case the emitted laser light from the laser emitter 21 is split by a beam splitting mechanism). The laser light is transmitted to each laser scattering mechanism 22; the laser scattering mechanisms 22 of each laser disinfection unit 20 are arranged sequentially at intervals in the filter disinfection chamber; the laser scattering mechanism 22 has multiple vent holes 224, and the air on one side of the laser scattering mechanism 22 can only enter the other side of the laser scattering mechanism 22 through each vent hole 224; the emitted laser light from the laser emitter 21 can be transmitted to the laser scattering mechanism 22 and fill the laser scattering mechanism 22 with scattered laser light, forming a powerful disinfection area; the scattered laser light can irradiate the passing air through the inner wall of each vent hole 224.

[0037] Through the laser scattering mechanism 22 with ventilation holes 224, it not only has the efficiency of traditional physical filtration, but also, in conjunction with the laser emitter 21, gives it the ability to actively disinfect microorganisms with laser. The laser scattering mechanism 22 is cleverly set in the air channel 10. The energy of the laser is sufficient to destroy the cell structure of viruses and bacteria. Based on the laser scattering and disinfection characteristics, viruses and bacteria in the air are thoroughly disinfected. Air disinfection is no longer just about interception and adsorption, but truly achieves purification and disinfection from the source, greatly improving the efficiency of air disinfection and ensuring the safety of the outflowing air.

[0038] Specifically, the system primarily uses laser light to disinfect the air passing through each ventilation hole 224 via the inner wall of the ventilation hole 224. Since the laser light can enter the filtration and disinfection chamber after being emitted through the transparent laser scattering mechanism 22, this part can also perform laser disinfection on the air located in the filtration and disinfection chamber. This part serves as an auxiliary function for air disinfection, thereby achieving a certain degree of dual disinfection effect.

[0039] The following are the setup instructions for the laser sterilizer:

[0040] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-3 As shown, the laser sterilizer includes multiple laser sterilization units 20; along the airflow path, the laser scattering mechanisms 22 of each laser sterilization unit 20 are arranged in parallel intervals within the filter sterilization chamber (the number of laser scattering mechanisms 22 can be set to 2, 3, 4, 5, 6, 7, 8, 9, 10 or more; from the perspective of rational energy utilization, the number of laser scattering mechanisms 22 is set to 1 to 3); and the density of the central plates 221 of each laser scattering mechanism 22 may be the same or different; and the aperture of the vent holes 224 on each central plate 221 may be the same or different (here it means that the density of each central plate 221 is the same or different). The diameters of the vents 224 on each central plate 221 may be the same or different, meaning that the diameters of the vents 224 on a single central plate 221 are the same; the density of the central plates 221 of each laser scattering mechanism 22 or the vents 224 on each central plate 221 can be set to gradually decrease or gradually increase, or be larger in the middle and smaller on both sides, or smaller in the middle and larger on both sides, along the airflow direction; it can be reasonably set according to needs; the different density of each central plate 221 or the different vents 224 on each central plate 221 is to enable multiple laser scattering mechanisms 22 to cooperate and supplement each other to achieve more thorough disinfection of the air.

[0041] In the optional schemes of this embodiment, it is more preferred that the wavelength of the laser emitted by the laser emitter 21 is 266nm, which has a strong killing effect on viruses and bacteria.

[0042] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 4 As shown, the laser scattering mechanism 22 includes a frame 222 and a central plate 221; the frame 222 is fixedly disposed around the central plate 221 (the frame 222 is used to fix the central plate 221 and the laser reflective layer 223); the central plate 221 is transparent; and various ventilation holes 224 are provided on the central plate 221; a laser reflective layer 223 is disposed between the inner side of the frame 222 and the circumferential outer wall of the central plate 221, the laser reflective layer 223 is used to enhance the energy of the laser in the laser scattering mechanism 22 and improve the disinfection effect.

[0043] Specifically, the laser scattering mechanism 22 is a plate made of a material that allows the laser to diffuse and does not absorb much laser light.

[0044] In the optional embodiments of this example, it is more preferred that the middle plate 221 is made of at least one of transparent materials such as PET, PP or PVC, which is used to ensure that the laser can pass through and be scattered therein.

[0045] In the optional solutions of this embodiment, it is more preferred that the laser reflective layer 223 is a reflector or a coating that reflects laser light, such as a silver coating.

[0046] In the optional schemes of this embodiment, it is more preferred that the laser emitted by the laser emitter 21 is transmitted to the laser scattering mechanism 22 via the laser reflector.

[0047] To facilitate cleaning of the laser scattering mechanism 22, the following settings can also be made:

[0048] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-3 As shown, the filter and disinfection chambers located on both sides of the entire laser scattering mechanism 22 are also equipped with openable and closable closed doors; the air channel 10 is equipped with a cleaning channel 30 (the cleaning channel 30 can be set as one, in which case both cleaning liquid and cleaning gas can flow; or the number of cleaning channels 30 is two sets, one set for the flow of cleaning liquid and the other set for the flow of cleaning gas), the cleaning channel 30 is connected to the filter and disinfection chamber located between the two closed doors; and the cleaning channel 30 is filled with cleaning liquid or cleaning gas.

[0049] Specifically, such as Figures 1-3 As shown, the closed door can consist of two doors, each driven by a motor to rotate and open or close, and the two doors together achieve the closure of the closed door position.

[0050] Specifically, the cleaning channel 30 includes an input channel and an output channel (the positions of the input and output channels can be set according to actual conditions to facilitate better cleaning and discharge of the cleaning liquid or cleaning gas; for example...). Figures 1-3 As shown, when the input channel and output channel are located on the same side of the air channel 10, it is advisable that the input channel is at the lowest end of the air channel 10 during use (so that the cleaning liquid can be better discharged). The cleaning liquid or cleaning gas enters through the input channel and flows through the vents 224 of each laser scattering mechanism 22 in sequence, cleaning each vent 224 and the surface of the laser scattering mechanism 22, so as to avoid the accumulation of dust or impurities affecting the laser's disinfection effect on the air.

[0051] Specifically, necessary valves are installed on the cleaning channel 30 to control its opening and closing.

[0052] Specifically, the closed door located near entrance 11 is the first closed door 40; the closed door located near exit 12 is the second closed door 50; as... Figure 2 As shown, the first closed door 40 and the second closed door 50 are in the open state, and air can enter through the inlet 11 and flow out through the outlet 12 via each laser scattering mechanism 22; as Figure 3 As shown, the first closed door 40 and the second closed door 50 are in the closed state. At this time, the filter and disinfection chamber between the first closed door 40 and the second closed door 50 is a sealed space, which can ensure the sealing and effectiveness of the cleaning process.

[0053] To enhance air filtration, the following settings can also be configured:

[0054] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-3 As shown, in the airflow direction within the filtration and disinfection chamber, a primary filter 60 is provided at the front end of all the laser scattering mechanisms 22 to initially filter large particles and dust in the air, preventing these large particles and dust from interfering with the subsequent disinfection and sterilization process; a HEPA filter 70 is provided at the rear end of all the laser scattering mechanisms 22 to further filter fine particles in the air, ensuring the cleanliness of the exhaust air; and the primary filter 60 and HEPA filter 70 can also block the internal laser from being transmitted outside the filtration and disinfection chamber (the air channel 10 is made of a material that can prevent the laser from being emitted outward), preventing the laser from posing a threat to the human body, and providing users with a safe and efficient air disinfection technology solution.

[0055] To enhance the intelligent settings, the following settings can be configured:

[0056] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, it also includes a controller (not shown in the figure), an alarm (not shown in the figure), and a laser power meter 23; the controller is communicatively connected to the alarm and the laser power meter 23; the laser power meter 23 (used to detect the laser power intensity in real time) is installed in the filter disinfection chamber with a laser scattering mechanism 22.

[0057] Specifically, when the laser power detected by the laser power meter 23 decays to a preset value, it indicates that the laser energy of the laser scattering mechanism 22 may be weakened due to the accumulation of dust or impurities. At this time, the controller controls the alarm to issue an alarm signal to remind the user to clean the laser scattering mechanism 22.

[0058] Specifically, the controller can communicate with, but is not limited to, the control motor of the closed door and the valves on the cleaning channel 30. When the laser power meter 23 decays to a preset value, the controller controls the first closed door 40 and the second closed door 50 to close and the cleaning channel 30 to open, thereby cleaning the internal laser scattering mechanisms 22. After completion, the controller controls the closing of the cleaning channel 30 and the opening of the first closed door 40 and the second closed door 50 to restore air circulation.

[0059] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An air filter with laser sterilization function, characterized in that: Includes air passages and laser sterilizers; The air passage has an inlet, an outlet, and a filter and disinfection chamber located between the inlet and the outlet; The laser sterilizer includes at least one laser sterilization unit, which includes a laser emitter and a laser scattering mechanism connected by an optical path. The laser scattering mechanisms of each laser sterilization unit are arranged sequentially at intervals within the filter sterilization chamber. Each laser scattering mechanism has multiple vents, allowing air on one side of the laser scattering mechanism to enter the other side of the mechanism only through these vents. The emitted laser from the laser emitter can be transmitted to the laser scattering mechanism and spread throughout it. The scattered laser can penetrate the inner wall of each vent and irradiate the passing air.

2. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: The laser scattering mechanism includes a frame and a central plate; the frame is fixedly disposed around the central plate; the central plate is transparent; and the central plate has ventilation holes. A laser reflective layer is provided between the inner side of the frame and the circumferential outer wall of the middle plate.

3. The air filter with laser sterilization and disinfection function according to claim 2, characterized in that: The laser sterilizer includes multiple laser sterilization units; Along the airflow path, the laser scattering mechanisms of each laser disinfection unit are arranged in parallel and spaced apart in the filter disinfection chamber. Furthermore, the density of the central plate in each of the laser scattering mechanisms may be the same or different; Furthermore, the diameters of the vent holes on each of the central plates may be the same or different.

4. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: It also includes controllers, alarms, and laser power meters; The controller is communicatively connected to both the alarm and the laser power meter. The laser power meter is installed inside the filtration and disinfection chamber, which has the laser scattering mechanism.

5. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: The filter and disinfection chambers located on both sides of the entire laser scattering mechanism are also equipped with openable and closable doors. The air passage is provided with a cleaning channel, which is connected to the filter and disinfection chamber located between the two closed doors; and cleaning liquid or cleaning gas flows in the cleaning channel.

6. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: In the airflow direction within the filtration and disinfection chamber, a primary filter is provided at the front end of all the laser scattering mechanisms; and a HEPA filter is provided at the rear end of all the laser scattering mechanisms.

7. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: The laser emitted by the laser emitter has a wavelength of 266nm.

8. The air filter with laser sterilization and disinfection function according to claim 1, characterized in that: The laser emitted by the laser emitter is transmitted to the laser scattering mechanism via the laser reflector.

9. The air filter with laser sterilization and disinfection function according to claim 2, characterized in that: The material of the middle plate is at least one of PET, PP or PVC.

10. The air filter with laser sterilization and disinfection according to claim 2, characterized in that: The laser reflective layer is a reflector or a coating that reflects laser light.

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