CN212619064U - Air sterilizer - Google Patents

Abstract

The utility model relates to an air sterilizer, air sterilizer includes: the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are formed in the shell; and the shielding device is arranged in the air duct and is positioned at the air inlet so as to dynamically shield particles in the airflow. Including the shielding ware in the above-mentioned air sterilizing apparatus, the shielding ware is located in the wind channel to be located air inlet department, with the particulate matter in the dynamic shield air current, particulate matters such as dust, bacterium that can effectively block in the air get into the wind channel, reduce the particulate matter volume that gets into the wind channel, the washing frequency of extension electric purification module, convenience of customers uses air sterilizing apparatus. Meanwhile, the service life of the heating assembly can be prolonged, the replacement frequency of the filter screen can be increased, the cleaning frequency of a user can be reduced, and the user experience can be improved.

Description

Air sterilizer

Technical Field

The utility model relates to an air purification technical field especially relates to air disinfector.

Background

The novel coronavirus is a novel virus with strong infectivity and great harmfulness, can be transmitted in places with dense people flow (such as hospitals, schools, hotels, restaurants, markets, cinemas, stations and markets) through various ways such as droplets, contact, aerosol and the like, and poses serious threats to public health.

In general, the new coronavirus can be transmitted in the air by aerosol, spray and the like, and if the air in which the new coronavirus is entrained is inhaled, the health of a human body can be threatened. At present, the spread of new coronavirus and global epidemic situation are not completely controlled, and the development of an air sterilizer can be of great help to eliminate the epidemic situation. The air sterilizing machine generally comprises an electric purification module which can effectively remove particles such as dust in the air, but the electric purification module generally needs to be cleaned when excessive dust is accumulated, and the inconvenience is increased when the air sterilizing machine is used by a user.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an air sterilizer for reducing the frequency of cleaning the electrical purification module, which is convenient for users to use.

An air sterilizer, comprising:

the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are formed in the shell;

and the shielding device is arranged in the air duct and is positioned at the air inlet so as to dynamically shield particles in the airflow.

Including the shielding ware in the above-mentioned air sterilizing apparatus, the shielding ware is located in the wind channel to be located air inlet department, with the particulate matter in the dynamic shield air current, particulate matters such as dust, bacterium that can effectively block in the air get into the wind channel, reduce the particulate matter volume that gets into the wind channel, the washing frequency of extension electric purification module, convenience of customers uses air sterilizing apparatus. Meanwhile, the service life of the heating assembly can be prolonged, the replacement frequency of the filter screen can be increased, the cleaning frequency of a user can be reduced, and the user experience can be improved.

In one embodiment, the shielding device comprises a driving part and a shielding net connected with the driving part, and the shielding net is arranged at the air inlet and is driven by the driving part to rotate. At the high-speed rotatory in-process of shielding net, block the particulate matter in the air current in the shielding net outside, prevent that the particulate matter from passing through in the wind channel of shielding net entering air disinfection machine, the use of electric purification module is long in the extension wind channel, reduces cleaning frequency, and convenience of customers uses.

In one embodiment, the rotation axis of the shielding net is arranged to intersect with the plane of the air inlet. Therefore, the dynamic shielding layer formed when the shielding net rotates around the rotating shaft can cover the air inlet so as to completely block particles in the air flow entering from the air inlet.

In one embodiment, the shielding mesh is a single layer mesh. The single-layer net has small influence on the flow of air flow in the air duct, and noise generated by the shielding net is prevented.

In one embodiment, the shielding net comprises an outer ring, an inner ring and a plurality of spacers, the inner ring is sleeved in the outer ring at intervals, the plurality of spacers are connected between the inner ring and the outer ring, and the plurality of spacers are arranged at intervals along the circumferential direction of the inner ring. The inner ring, the outer ring and the plurality of division bars are connected with each other to form a net structure, and airflow is allowed to flow through the net structure during rotation, and particles in the airflow are blocked.

In one embodiment, the division bar is S-shaped or linear.

In one embodiment, the shielding net comprises a rib, the rib is located between the inner ring and the outer ring, extends along the arrangement direction of the plurality of division bars, and supports the plurality of division bars to be connected. So as to support a plurality of parting beads through the ribs, and strengthen the strength of the shielding net.

In one embodiment, the shielding device further comprises a locking nut, and the locking nut is assembled and abutted on one side of the shielding net, which faces away from the driving piece. The shielding net is limited through the locking nut, and the shielding net is prevented from shifting in the rotating process.

In one embodiment, the air purifier further comprises an electric purification module, and the shielding device is arranged between the electric purification module and the air inlet. The electric purification module is used for carrying out primary purification on the airflow flowing to the filter element and collecting pollutants in the airflow flowing through the electric purification module.

In one embodiment, the electric purification device further comprises a sterilization module arranged at the downstream of the electric purification module, wherein the sterilization module comprises a heating component and a filter element, and the heating component is arranged at one side of the filter element and is used for heating the filter element. Air sterilizing machine during operation, the fan drives external air current and gets into the wind channel by the air intake, and filter piece, filter piece to the virus, the bacterium, the aerosol has certain filtering action, the virus, the bacterium, the aerosol can remain on filtering piece, and filter piece intensification under heating element's high temperature baking effect, virus and bacterium attached to on filtering piece are inactivated, reach the effect of disinfection degerming, simultaneously can be to the inactivation of new crown virus wherein, and then block the propagation path of new crown virus, alleviate the influence of new crown virus to people's work and life.

Drawings

FIG. 1 is a schematic view of an air sterilizer according to an embodiment of the present invention;

fig. 2 is a schematic view of a shield in the air sterilizer shown in fig. 1.

100. An air sterilizer; 10. a sterilization module; 12. a filter member; 14. a heating assembly; 30. a fan; 50. an electrical purification module; 70. a shield; 72. a drive member; 74. a shielding mesh; 741. an outer ring; 743. an inner ring; 745. a parting strip; 747. a rib; 76. and locking the nut.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Currently, airborne transmission is an important mode of transmission of viruses. Airborne transmission refers to the entire process of air invasion into a new susceptible host after the pathogen has been expelled from the source of infection.

The three modes of airborne transmission of infectious diseases are: droplet propagation, droplet nucleus propagation and dust propagation.

When a patient breathes, speaks loudly, cries, snores, coughs or sneezes, pathogens of respiratory infectious diseases exist in mucus on the surface of a respiratory mucosa or in fragments of ciliated epithelial cells, a large amount of mucus droplets containing the pathogens can be ejected from the nasopharynx, the size is small (15-100 mu m), and the mucus droplets can be suspended in the air for a short time (generally, no more than a few seconds). The extent of droplet spread is limited to close contact between the patient or the carrier. Epidemic cerebrospinal meningitis, influenza, pertussis, etc. can be transmitted in this manner. Crowded temporary shelters, detention houses or prisons, numerous cabins for passengers, station waiting rooms are common places where such spread occurs.

In the case of droplet nuclear transmission, droplets containing pathogens are discharged from an infectious agent and suspended in the air, and water is lost by evaporation, leaving smiling particles of protein coat containing pathogens and forming droplet nuclei. The spray core can be suspended in air for hours or even longer, and the floating distance is longer. Inhalation of the droplet nucleus with the pathogen causes infection, known as droplet nucleus transmission. Pathogen resistance can spread infectious diseases such as diphtheria, scarlet fever, tuberculosis, etc., through the droplet nucleus.

For the transmission of dust, secretion containing pathogens falls on the ground in large droplets, and forms dust after drying, and the dust is resuspended in the air due to the movement of people and is inhaled by people to cause the transmission. All pathogens with strong resistance to the outside, such as tubercle bacillus, can be transmitted by dust.

The occurrence of airborne transmission depends on a variety of conditions, among which population density, hygiene conditions, the proportion of susceptible persons in the population plays a decisive role.

The main working principle of the air purification device in the prior art is as follows: air is pumped into the machine and filtered through the built-in filter screen, so that the dust, peculiar smell and toxic gas nuclei can be filtered to kill partial bacteria. However, the air purification device in the prior art cannot effectively kill viruses carried in the air, so that the transmission of the viruses is difficult to block, the infectivity of the viruses is high, and the air purification device is not beneficial to the healthy life of people.

At present, under the condition that new coronavirus spreads and special-effect medicines are not available temporarily, a device capable of blocking the new coronavirus from spreading through airflow is urgently needed. In order to solve the technical problem, the utility model provides an air sterilizer.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of an air sterilizer in an embodiment of the present invention, which includes a housing (not shown), a sterilization module 10 and a fan 30, wherein an air duct is formed in the housing, and the housing is provided with an air inlet and an air outlet both communicated with the air duct; the sterilization module 10 and the fan 30 are both disposed in the air duct, and the fan 30 drives the external airflow to pass through the sterilization module 10, the sterilization module 10 includes a filter member 12 and a heating element 14, and the heating element 14 is disposed on one side of the filter member 12 for heating the filter member 12.

100 during operation of air sterilizing machine, fan 30 drives external air current and gets into the wind channel by the air intake, and through filtering piece 12, it is to the virus to filter piece 12, the bacterium, aerosol has certain filtering action, the virus, the bacterium, aerosol can remain on filtering piece 12, and filter piece 12 intensification under heating element 14's high temperature baking effect, virus and bacterium attached to on filtering piece 12 are inactivated, reach the effect of disinfection degerming, simultaneously can be to the inactivation of new crown virus wherein, and then block the propagation path of new crown virus, alleviate the influence of new crown virus to people's work and life.

Further, the air sterilizer 100 further includes a temperature sensor (not shown) for sensing the temperature of the heating assembly 14, and a controller (not shown) for controlling the heating assembly 14 to heat in a preset temperature range for a preset time period. In this way, the heating assembly 14 is controlled to continuously bake the filter member 12 at a certain temperature to effectively inactivate the new coronavirus attached to the filter net. Optionally, the predetermined temperature range is 50 ℃ to 75 ℃ so that the heating assembly 14 can heat the filter element 12 by radiation to a high temperature state capable of inactivating new coronavirus, for example, the filter element 12 is heated to 56 ℃ to 70 ℃ to inactivate viruses and bacteria at the high temperature. Optionally, the predetermined time period is greater than or equal to 30 minutes to continuously bake the viruses and bacteria on the filter member 12 for a period of time at high temperature, so as to improve the inactivation efficiency. Specifically, filter element 12 is a HHEPA filter screen, which can achieve greater than 99.7% removal efficiency for particles having a diameter of greater than 0.3 microns (1/200 hair diameter), and is an effective filter medium for smoke, dust, and bacteria.

In some embodiments, heating assembly 14 is positioned upstream of the flow of air through filter element 12. That is to say, the outside air flows into the air sterilizer 100 under the driving of the fan 30, and the air current flows through the heating element 14 first and then flows to the filtering element 12, so the heating element 14 can heat the air current flowing through itself to play a certain role in sterilization and disinfection, then the heated air current flows through the filter screen again, the bacteria and viruses can be attached to the filter screen, and are continuously heated by the heating element 14 on one side of the filter screen, so as to improve the utilization rate of the heating element 14, and improve the inactivation effect of the bacteria and the viruses. Alternatively, heating assembly 14 may be positioned downstream of the flow of gas through filter element 12, and may also heat filter element 12.

It should be understood that, in other embodiments, the sterilization module 10 includes a plurality of heating assemblies 14, the plurality of heating assemblies 14 are respectively disposed on two opposite sides of the filtering member 12 along the airflow direction, so as to arrange the heating assemblies 14 on both the upstream and downstream of the filtering member 12, so that the filtering member 12 is heated more uniformly, and the sterilization effect is better. Still alternatively, the heating element 14 is connected to the filter element 12, and the heating element 14 and the filter element 12 are integrally formed, so that the filter element 12 can be heated by the heating element 14.

Specifically, the heating assembly 14 includes a heating element that is electrically energized to generate heat, and a fin that is disposed on the heating element and is in thermal communication with the heating element to more efficiently radiate heat generated by the heating element to a filter element in the surrounding environment through the fin. It will be appreciated that the heater assembly may have air vents formed therein to allow air flow through the heater assembly and to prevent the heater assembly from blocking the air flow.

It can be understood that, in some embodiments, the sterilization module 10 includes a plurality of sterilization modules 10, and the plurality of sterilization modules 10 are arranged in sequence along the airflow direction, so that viruses in the airflow can be inactivated for a plurality of times, and the inactivation effect on new corona viruses can be improved.

Referring to fig. 1, in some embodiments, air sterilizer 100 further includes an electrical purification module 50 disposed within the air chute upstream of sterilization module 10, a heating element 14 disposed between electrical purification module 50 and filter element 12, and electrical purification module 50 is configured to provide primary purification of the air flowing toward filter element 12 to collect contaminants in the air flowing therethrough. Therefore, the air flow is firstly purified by the electric purification module 50, and then is further sterilized and disinfected by the sterilization module 10 and then discharged indoors, so that the quality of indoor air is improved.

Optionally, the electrical purification module 50 includes a plurality of electrical purification modules 50, and the plurality of electrical purification modules 50 are sequentially arranged along the airflow flowing direction, so that the airflow is purified by the plurality of electrical purification modules 50 for a plurality of times, and the air purification effect is further improved.

Referring to fig. 1, in some embodiments, the air sterilizer 100 further includes a shielding device 70, the shielding device 70 is disposed in the air duct and located at the air inlet to dynamically shield particles in the air flow, so as to effectively prevent particles such as dust and bacteria in the air from entering the air duct, reduce the amount of particles entering the air duct, prolong the cleaning frequency of the electrical purification module 50, and facilitate the user to use the air sterilizer 100. Meanwhile, the service life of the heating assembly 14 and the replacement frequency of the filter screen can be prolonged, the cleaning frequency of a user is reduced, and the user experience is improved.

Referring to fig. 2, fig. 2 shows a schematic structural diagram of an air sterilizer 100 according to an embodiment of the present invention, in some embodiments, the shielding device 70 includes a driving member 72 and a shielding net 74 connected to the driving member 72, and the shielding net 74 is disposed at the air inlet and rotates under the driving of the driving member 72. In the process of high-speed rotation of the shielding net 74, particles in the air flow are blocked outside the shielding net 74, the particles are prevented from entering the air duct in the air sterilizing machine 100 through the shielding net 74, the service time of the electric purification module 50 in the air duct is prolonged, the cleaning frequency is reduced, and the use by a user is facilitated.

Specifically, the rotation axis of the shielding net 74 is disposed to intersect the plane of the air inlet, so that the dynamic shielding layer formed when the shielding net 74 rotates around the rotation axis can cover the air inlet to completely block the particles in the air flow entering from the air inlet. Optionally, the rotation axis of the shielding net 74 is perpendicular to the plane of the air inlet, so that the shielding net 74 is parallel to the plane of the air inlet, and the entering air flow can be uniformly and effectively screened and filtered.

Optionally, the shielding mesh 74 is a single layer mesh, which has a small influence on the flow rate of the airflow in the air duct, so as to prevent noise from being generated due to the shielding mesh 74.

Referring to fig. 2, in some embodiments, the shielding mesh 74 includes an outer ring 741, an inner ring 743 and a plurality of spacers 745, the inner ring 743 is disposed in the outer ring 741 at intervals, and the plurality of spacers 745 are disposed at intervals along the circumference of the inner ring 743 and connected between the inner ring 743 and the outer ring 741; thus, the inner ring 743, the outer ring 741 and the plurality of spacers 745 are connected to each other to form a net structure that allows the air flow to pass through during rotation while blocking the particulate matter in the air flow. Optionally, the division bars 745 are S-shaped or straight.

Referring to fig. 2, further, the shielding mesh 74 further includes a rib 747, where the rib 747 is located between the inner loop 743 and the outer loop 741, extends along the arrangement direction of the plurality of spacers 745, and supports the plurality of spacers 745 to connect, so as to support the plurality of spacers 745 through the rib 747, thereby enhancing the strength of the shielding mesh 74.

Referring to fig. 2, further, the shielding device 70 further includes a locking nut 76, the locking nut 76 is mounted on a side of the shielding net 74 facing away from the driving member 72, and the locking nut 76 limits the shielding net 74 to prevent the shielding net 74 from shifting during the rotation process.

Specifically, the lock nut is a nut widely applied to industries such as machinery, the first kind is to screw two identical nuts on the same bolt, and a tightening torque is added between the two nuts, so that the bolt connection is reliable. The second is a special locknut, which needs to be used together with a lockwasher. The special anti-loose nut is not a hexagon nut but a middle-circle nut, and the circumference of the nut is provided with 3, 4, 6 or 8 gaps (different according to the size of the nut and the series of products of manufacturers), and the gaps are the acting points of a screwing tool and the clamping positions of bayonets of anti-loose gaskets.

Specifically, in this embodiment, the air sterilizer 100 includes a housing, and a shielding device 70, an electrical purification module 50, a sterilization module 10 and a fan 30 all disposed in an air duct of the housing, wherein the electrical purification module 50 is disposed between the shielding device 70 and the sterilization module 10, the sterilization module 10 is disposed between the electrical purification module 50 and the fan 30, the shielding device 70 is disposed near an air inlet of the housing, and the fan 30 is disposed near an air outlet of the housing.

When the air sterilizer 100 is in operation, the fan 30 starts to rotate and drives the external air flow to flow into the air channel from the air inlet for filtration and purification, and finally flows out from the air outlet of the housing. And, the air flow passes through the shield 70, the electrical purification module 50, and the sterilization module 10 in order during the flowing process. The shield 70 includes a driving member 72 and a shield mesh 74 connected to the driving member 72, and the shield mesh 74 is rotated by the driving member 72. In the process of high-speed rotation of the shielding net 74, particles in the air flow are blocked outside the shielding net 74, the particles are prevented from entering the air duct in the air sterilizing machine 100 through the shielding net 74, the service time of the electric purification module 50 in the air duct is prolonged, the cleaning frequency is reduced, and the use by a user is facilitated.

The electrical purification module 50 is located upstream of the sterilization module 10 and the electrical purification module 50 is used to perform a primary purification of the air flow towards the filter elements 12, collecting the pollutants in the air flow passing through itself. Therefore, the air flow is firstly purified by the electric purification module 50, and then is further sterilized and disinfected by the sterilization module 10 and then discharged indoors, so that the quality of indoor air is improved. Optionally, the electrical purification module 50 includes a plurality of electrical purification modules 50, and the plurality of electrical purification modules 50 are sequentially arranged along the airflow flowing direction, so that the airflow is purified by the plurality of electrical purification modules 50 for a plurality of times, and the air purification effect is further improved.

When the air current flows through sterilization module 10, through filtering piece 12, it has certain filtering action to filter piece 12 to the virus, the bacterium, aerosol, the virus, the bacterium, aerosol can remain on filtering piece 12, and filter piece 12 intensifies under heating element 14's high temperature toasts the effect, virus and bacterium attached to on filtering piece 12 are inactivated, reach the effect of disinfection and sterilization, simultaneously can be to the inactivation of new crown virus wherein, and then block the propagation path of new crown virus, alleviate the influence of new crown virus to people's work and life.

Also, the heating assembly 14 is located upstream of the air flow through the filter element 12. That is to say, the outside air flows into the air sterilizer 100 under the driving of the fan 30, and the air current flows through the heating element 14 first and then flows to the filtering element 12, so the heating element 14 can heat the air current flowing through itself to play a certain role in sterilization and disinfection, then the heated air current flows through the filter screen again, the bacteria and viruses can be attached to the filter screen, and are continuously heated by the heating element 14 on one side of the filter screen, so as to improve the utilization rate of the heating element 14, and improve the inactivation effect of the bacteria and the viruses. Alternatively, heating assembly 14 may be positioned downstream of the flow of gas through filter element 12, and may also heat filter element 12.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An air sterilizer, comprising:

the air conditioner comprises a shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet which are communicated with the air duct are formed in the shell;

and the shielding device (70) is arranged in the air duct and is positioned at the air inlet so as to dynamically shield particles in the airflow.

2. An air sterilizer as claimed in claim 1, wherein the shield (70) comprises a drive member (72) and a shield mesh (74) connected to the drive member (72), the shield mesh (74) being provided at the air inlet and being rotated by the drive member (72).

3. An air sterilizer as claimed in claim 2, characterized in that the axis of rotation of the screen (74) intersects the plane of the air inlet.

4. An air sterilizer as claimed in claim 2, characterized in that the shielding mesh (74) is a single-layer mesh.

5. An air sterilizer as claimed in claim 4, wherein the screen (74) comprises an outer ring (741), an inner ring (743) and a plurality of spacers (745), the inner ring (743) being arranged within the outer ring (741) at intervals, the plurality of spacers (745) being arranged at intervals along the circumference of the inner ring (743) and being connected between the inner ring (743) and the outer ring (741).

6. An air sterilizer as claimed in claim 5, characterized in that the division bar (745) is S-shaped or rectilinear.

7. An air sterilizer as claimed in claim 5, characterized in that the shielding mesh (74) comprises ribs (747), which ribs (747) are located between the inner loop (743) and the outer loop (741) and extend in the direction of the arrangement of the plurality of division bars (745) and support the plurality of division bars (745).

8. An air sterilizer as claimed in any one of claims 2 to 7, characterized in that the shield (70) further comprises a lock nut (76), the lock nut (76) being fitted against the side of the shielding mesh (74) facing away from the drive member (72).

9. An air sterilizer as claimed in any one of claims 2 to 7, further comprising an electrical purification module (50), the screen (70) being provided between the electrical purification module (50) and the air inlet.

10. An air sterilizer according to claim 9, further comprising a sterilization module (10) arranged downstream of the electrical purification module (50), the sterilization module (10) comprising a heating element (14) and a filter element (12), the heating element (14) being arranged on one side of the filter element (12) and serving to heat the filter element (12).

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