Air filter screen with laser disinfection and sterilization functions

Abstract

The invention discloses an air filter screen with laser disinfection and sterilization, which relates to the technical field of air filtration and comprises an air channel and a laser disinfector. The air channel is provided with an inlet, an outlet and a filtering and disinfecting cavity located between the inlet and the outlet. The laser disinfector comprises at least one laser disinfection unit, and the laser disinfection unit comprises a laser emitter and a laser scattering mechanism which are connected through a light path; a plurality of vent holes are formed in the laser scattering mechanism; emitting laser of the laser emitter can be transmitted to the laser scattering mechanism, and scattering laser is fully distributed in the laser scattering mechanism, so that a powerful disinfection area is formed; and the scattering laser can penetrate through the inner walls of the vent holes and irradiate the passing air. According to the air purifier, the physical filtering efficiency is enhanced, the filter screen is endowed with the capability of actively killing microorganisms, viruses and bacteria existing in air are thoroughly killed based on laser scattering and disinfection and sterilization characteristics, the air killing efficiency is greatly improved, and the safety of the air flowing out of the outlet is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to an air filter with laser disinfection and sterilization function. Background Art

[0002] Traditional air filters, such as primary filters, medium efficiency filters and high efficiency filters (HEPA), mainly rely on physical interception to remove particulate matter from the air. Although HEPA filters can filter out particles larger than 0.3 microns in the air, their interception efficiency will decrease for smaller viruses and bacteria. Traditional filters usually do not have the ability to actively kill microorganisms and can only rely on interception and adsorption to reduce the number of microorganisms, and their efficiency in air disinfection is low.

[0003] Some air filters attempt to enhance the disinfection effect by adding chemical disinfectants. However, chemical disinfectants may have negative effects on human health, and long-term use may cause microorganisms to develop drug resistance. In addition, the volatility and residual issues of chemical disinfectants also need to be considered to ensure that there is no secondary pollution to indoor air quality.

[0004] Based on the problem that the existing air filter has low disinfecting efficiency and poor safety effect in disinfecting harmful microorganisms such as viruses and bacteria, an air filter is proposed here to improve the air disinfecting efficiency and safe use. Summary of the invention

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

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an air filter with laser disinfection and sterilization function, comprising an air channel and a laser disinfector; the air channel has an inlet, an outlet and a filtering and disinfecting cavity located between the inlet and the outlet; the laser disinfector comprises at least one laser disinfection unit, and the laser disinfection unit comprises a laser emitter and a laser scattering mechanism connected in an optical path; the laser scattering mechanisms of the laser disinfection units are arranged in sequence and at intervals in the filtering and disinfecting cavity; the laser scattering mechanism is provided with a plurality of vents, and the air located on one side of the laser scattering mechanism can only enter the other side of the laser scattering mechanism through the vents; the emitted laser of the laser emitter can be transmitted to the laser scattering mechanism and the laser scattering mechanism is filled with scattered laser light; the scattered laser light can be irradiated on the passing air through the inner walls of the vents.

[0008] Preferably, the laser scattering mechanism includes a frame and a middle plate; the frame is fixedly arranged around the middle plate; the middle plate is transparent; and the middle plate is provided with the ventilation holes; a laser reflection layer is arranged between the inner side of the frame and the circumferential outer side wall of the middle plate.

[0009] Preferably, the laser sterilizer comprises a plurality of the laser disinfection units; on the air circulation path, the laser scattering mechanisms of each of the laser disinfection units are arranged in parallel and at intervals in the filtering and disinfection chamber; and the density of the middle plate of each of the laser scattering mechanisms is the same or different; and the aperture of the air holes on each of the middle plates is the same or different.

[0010] Preferably, it also includes a controller, an alarm and a laser power meter; the controller is communicatively connected with the alarm and the laser power meter; the laser power meter is arranged in the filtering and disinfecting cavity having the laser scattering mechanism.

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

[0012] Preferably, in the air flow direction in the filtering and disinfecting 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 laser emitted by the laser emitter is 266nm 。

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

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

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

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The air filter with laser disinfection and sterilization provided by the present invention has the efficiency of traditional physical filtration through a laser scattering mechanism with air holes, and is further endowed with the ability to actively disinfect microorganisms by using laser in conjunction with a laser emitter. The laser scattering mechanism is cleverly arranged 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 disinfected, so that air disinfection is no longer just at the level of interception and adsorption, but truly realizes purification and disinfection from the source, greatly improving the efficiency of air disinfection and ensuring the safety of outflowing air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

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

[0024] In the figure:

[0025] 10-air channel; 11-inlet; 12-outlet;

[0026] 20-laser disinfection unit; 21-laser emitter; 22-laser scattering mechanism; 221-middle plate; 222-frame; 223-laser reflection layer; 224-vent; 23-laser power meter;

[0027] 30-cleaning channel;

[0028] 40-First closed door;

[0029] 50-Second closed door;

[0030] 60-primary filter;

[0031] 70-HEPA filter. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Embodiment 1

[0036] This embodiment provides an air filter with laser disinfection and sterilization function, such as Figure 1 to Figure 4 As shown, it 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 filtering and sterilizing chamber located between the inlet 11 and the outlet 12; the laser sterilizer includes at least one laser sterilizing unit 20, and the laser sterilizing unit 20 includes a laser emitter 21 and a laser scattering mechanism 22 connected in an optical path (one laser scattering mechanism 22 may correspond to one laser emitter 21; or multiple laser scattering mechanisms 22 may share one laser emitter 21, in which case the emitted laser of the laser emitter 21 passes through a beam splitting mechanism It is transmitted to each laser scattering mechanism 22); the laser scattering mechanism 22 of each laser disinfection unit 20 is arranged in sequence and spaced apart in the filtering and disinfecting chamber; a plurality of air vents 224 are provided on the laser scattering mechanism 22, 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 air vent 224; the emitted laser of the laser emitter 21 can be transmitted to the laser scattering mechanism 22 and the laser scattering mechanism 22 is filled with scattered laser light to form a powerful disinfection area; the scattered laser light can pass through the inner wall of each air vent 224 and irradiate the passing air.

[0037] The laser scattering mechanism 22 with the air vent 224 has the efficiency of traditional physical filtration, and is further equipped with the ability to actively disinfect microorganisms with laser in cooperation with the laser emitter 21. The laser scattering mechanism 22 is cleverly arranged in the air passage 10. 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, the viruses and bacteria in the air are thoroughly disinfected, so that air disinfection is no longer just at the level of interception and adsorption, but truly realizes purification and disinfection from the source, greatly improving the efficiency of air disinfection and ensuring the safety of outflowing air.

[0038] Specifically, the laser is mainly used to disinfect the air passing through the inner wall of each vent 224; because the laser can enter the filter and disinfection cavity after being emitted by the transparent laser scattering mechanism 22, this part can also perform laser disinfection on the air in the filter and disinfection cavity, and this part serves as an auxiliary function of air disinfection; thereby achieving a certain degree of dual disinfection effect.

[0039] Among them, the relevant setting instructions for the laser sterilizer:

[0040] In the optional scheme of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, the laser sterilizer includes a plurality of laser sterilizing units 20; on the air flow path, the laser scattering mechanisms 22 of each laser sterilizing unit 20 are sequentially arranged in parallel and spaced in the filtration and sterilization chamber (the number of the laser scattering mechanisms 22 can be set to 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. From the perspective of reasonable use of energy, the laser scattering mechanisms 22 are set to 1 to 3); and the density of the middle plate 221 of each laser scattering mechanism 22 is the same or different; and the aperture of the vent holes 224 on each middle plate 221 is the same or different (herein, the density of each middle plate 221 is the same or different). different; the apertures of the air holes 224 on each middle plate 221 are the same or different, and the apertures of the air holes 224 on a single middle plate 221 are the same; the density of the middle plate 221 of each laser scattering mechanism 22 or the air holes 224 on each middle plate 221 can be set to gradually become smaller or gradually become larger or larger in the air circulation direction or larger in the middle and smaller on both sides or smaller in the middle and larger on both sides; it can be reasonably set as needed; the density of each middle plate 221 or the air holes 224 on each middle plate 221 is set to be different, so as to make multiple laser scattering mechanisms 22 cooperate and complement each other to achieve more thorough disinfection of the air).

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

[0042] In the optional scheme of this embodiment, it is more preferred that Figure 4 As shown, the laser scattering mechanism 22 includes a frame 222 and a middle plate 221; the frame 222 is fixedly arranged around the middle plate 221 (the frame 222 is used to fix the middle plate 221 and the laser reflection layer 223); the middle plate 221 is transparent; and various ventilation holes 224 are opened on the middle plate 221; a laser reflection layer 223 is arranged between the inner side of the frame 222 and the circumferential outer side wall of the middle plate 221, and the laser reflection 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 can diffuse the laser and does not absorb much laser.

[0044] In the optional scheme of this embodiment, 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 solution of this embodiment, it is more preferred that the laser reflection layer 223 is a reflection mirror or a coating that has a reflective effect on laser, such as a silver coating.

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

[0047] In order to facilitate the cleaning of the laser scattering mechanism 22, the following settings may be made:

[0048] In the optional scheme of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, closed doors that can be opened and closed are respectively provided in the filtering and disinfecting chambers on both sides of the entire laser scattering mechanism 22; a cleaning channel 30 is provided on the air channel 10 (the cleaning channel 30 can be set to one, in which case both cleaning liquid and cleaning gas can flow; or the number of cleaning channels 30 is 2 groups, one group is used to circulate cleaning liquid, and the other group is used to circulate cleaning gas), the cleaning channel 30 is connected to the filtering and disinfecting chamber located between the two closed doors; and cleaning liquid or cleaning gas flows in the cleaning channel 30.

[0049] Specifically, Figure 1 to Figure 3 As shown, the closed door can be composed of two doors, each door is driven by a motor to rotate to open or close, and the two doors together realize the closure of the closed door position.

[0050] Specifically, the cleaning channel 30 includes an input channel and an output channel (the input channel and the output channel can be set according to the actual situation to facilitate the cleaning liquid or cleaning gas to be better cleaned and discharged; Figure 1 to Figure 3 As shown in , when the input channel and the output channel are located on the same side of the air channel 10, it is preferable that they are located at the lower end of the air channel 10 when in 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 air holes 224 of each laser scattering mechanism 22 in turn, cleaning each air hole 224 and the surface of the laser scattering mechanism 22 to prevent deposited dust or impurities from affecting the laser's disinfection effect on the air.

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

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

[0053] Among them, in order to increase the air filtering effect, you can also set as follows:

[0054] In the optional scheme of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, in the air flow direction in the filtering and disinfecting chamber, a primary filter 60 is also arranged at the front end of all the laser scattering mechanisms 22, which is used to preliminarily filter large particles and dust in the air to prevent these large particles and dust from interfering with the subsequent disinfection and sterilization process; a HEPA filter 70 is also arranged at the rear end of all the laser scattering mechanisms 22, which is used to further filter tiny particles in the air to ensure the cleanliness of the exhausted air; and the primary filter 60 and the HEPA filter 70 can also block the internal laser from being transmitted to the outside of the filtering and disinfecting chamber (the air channel 10 uses 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 technical solution.

[0055] Among them, in order to improve the intelligent setting, you can set as follows:

[0056] In the optional scheme of this embodiment, it is more preferred that 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 with the alarm and the laser power meter 23; the laser power meter 23 (for real-time detection of laser power intensity) is arranged in a filtering and disinfecting chamber having 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 dust or impurities accumulation. At this time, the controller controls the alarm to send an alarm signal to remind the user to clean the laser scattering mechanism 22.

[0058] Specifically, the controller can be connected to communication with the control motor of the closed door, the valves on the cleaning channel 30, etc., including but not limited to. When the laser power meter 23 attenuates to a preset value, the controller controls the first closed door 40 and the second closed door 50 to close, and opens the cleaning channel 30 to achieve cleaning of the internal laser scattering mechanisms 22. After completion, the controller controls the closing of the cleaning channel 30, and opens the first closed door 40 and the second closed door 50 to restore air circulation.

[0059] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An air filter with laser disinfection and sterilization, characterized in that: Includes air channel and laser sterilizer; The air passage has an inlet, an outlet and a filtering and sterilizing chamber located between the inlet and the outlet; The laser disinfector includes at least one laser disinfection unit, which includes a laser emitter and a laser scattering mechanism connected by an optical path; the laser scattering mechanisms of each laser disinfection unit are arranged in sequence and at intervals in the filtering and disinfecting cavity; the laser scattering mechanism is provided with a plurality of air holes, and the air on one side of the laser scattering mechanism can only enter the other side of the laser scattering mechanism through each of the air holes; the emitted laser of the laser emitter can be transmitted to the laser scattering mechanism and the laser scattering mechanism is filled with scattered laser light; the scattered laser light can penetrate the inner wall of each of the air holes and irradiate the passing air.

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

3. The air filter with laser disinfection and sterilization according to claim 2, characterized in that: The laser sterilizer comprises a plurality of the laser sterilizing units; On the air flow path, the laser scattering mechanisms of the laser disinfection units are sequentially arranged in parallel and at intervals in the filtering and disinfection chamber; The density of the middle plate of each laser scattering mechanism is the same or different; Furthermore, the diameters of the ventilation holes on each of the middle plates are the same or different.

4. The air filter with laser disinfection and sterilization according to claim 1, characterized in that: Also includes controller, alarm and laser power meter; The controller is in communication connection with the alarm device and the laser power meter; The laser power meter is arranged in the filtering and disinfecting chamber having the laser scattering mechanism.

5. The air filter with laser disinfection and sterilization function according to claim 1, characterized in that: The filtering and disinfecting chambers located on both sides of the entire laser scattering mechanism are also provided with closed doors that can be opened and closed; The air passage is provided with a cleaning passage, the cleaning passage is communicated with the filtering and disinfecting chamber located between the two closed doors; and cleaning liquid or cleaning gas flows in the cleaning passage.

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

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

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

9. The air filter with laser disinfection and sterilization 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 disinfection and sterilization function according to claim 2, characterized in that: The laser reflection layer is a reflection mirror or a coating that reflects laser light.

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