CN212327715U

CN212327715U - Air purifying device

Info

Publication number: CN212327715U
Application number: CN202020864871.9U
Authority: CN
Inventors: 刘江; 王贤波; 金星; 胡康泽; 王天龙
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-01-12
Anticipated expiration: 2030-05-21

Abstract

The utility model provides an air purifying device. An air purification device comprising: a housing; the filter screen is arranged in the shell; disinfectant generating device, disinfectant generating device sets up in the casing, and disinfectant generating device is used for spraying disinfectant to the filter screen. Through set up the device that is used for spraying disinfectant to the filter screen in air purification device, can realize disinfecting the disinfection operation to the bacterium on the filter screen, avoided the filter screen to breed the problem of bacterium easily after long-term the use. Adopt this structure can also avoid air purification device to produce the problem of peculiar smell, improved user's use effectively and experienced.

Description

Air purifying device

Technical Field

The utility model relates to an air purification equipment technical field particularly, relates to an air purification device.

Background

The air purification technology includes a low-temperature plasma technology and a filtering technology. Wherein, the filtration type technique is widely adopted because of simple structure, convenient replacement, high safety, low production cost and no generation of harmful substances such as ozone and the like. The filtering air purifier has filter net as main purifying part. The filter screen is made of melt-blown non-woven fabric materials, has small pores and carries electric charges, can effectively intercept PM2.5 particulate matters, and also intercepts microorganisms such as fungi, H1N1, hand-foot-and-mouth viruses and the like with the same size as particulate pollutants, and saliva, aerosol and the like carrying the microorganisms. Therefore, the air purification device can reduce the concentration of indoor pollutants and improve the sanitary quality of indoor air.

After the germs are intercepted by the filter screen, the vitality of the germs is not influenced and can still be continuously propagated, and the filter screen cannot be cleaned for a long time, which can cause secondary pollution to indoor air. At present, the problem is mainly alleviated by adopting a filter screen material with bacteriostatic efficacy. Related patents also report that silver ion bacteriostatic agents are loaded on the filter materials, or particles of copper oxide and zinc oxide are used as the filter materials, or the filter materials modified by bacteriostatic agents are directly used. These patent technologies, at the filter screen initial stage of using, have better antibacterial effect, but along with the increase of live time, a large amount of particle pollutants can be piled up on the filter screen surface, and these pollutants can cover the bacteriostatic active component on the filter screen, lead to the antibacterial function of filter screen to exert effect gradually.

To the lasting antibacterial demand in the filter screen life cycle, the utility model provides a can control the technical scheme of filter screen surface microorganism growth for a long time, when performance antibacterial action, can reduce the use amount of disinfectant by a wide margin, improve the effective utilization ratio of disinfectant.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an air purification device to solve the problem that the bacterium is multiplied easily inside the clarifier among the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided an air purifying device including: a housing; the filter screen is arranged in the shell; disinfectant generating device, disinfectant generating device set up in the casing, disinfectant generating device is used for spraying disinfectant to the filter screen, fan portion set up in the casing.

Furthermore, the shell is provided with an air inlet and an air outlet, the filter screen divides the shell into a first cavity and a second cavity, the air inlet is communicated with the first cavity, the air outlet is communicated with the second cavity, and the disinfection fog generating device is arranged in the first cavity.

Further, the air purification device further includes: the fan portion is arranged in the second cavity and used for sucking outside air flow into the first cavity through the air inlet and then discharging the air flow out of the shell from the air outlet after being purified by the filter screen.

Furthermore, the filter screen is a barrel-shaped structure with an opening at one end, the outer surface of the opening end of the filter screen is connected with the inner surface of the shell, a first cavity is formed between the rest outer surfaces of the filter screen and the inner surface of the first end of the shell in an enclosing manner, a second cavity is formed between the inner surface of the filter screen and the inner surface of the second end of the shell in an enclosing manner, and the fan is arranged on one side of the opening end of the filter screen.

Further, at least one of the air inlet and the air outlet is uniformly distributed along the circumferential direction of the shell.

Further, the disinfectant generating apparatus includes: the disinfectant aerosol generator is arranged at the bottom of the shell; the disinfectant nozzle is characterized in that one end of the disinfectant nozzle is communicated with the disinfectant aerosol generator, the nozzle end of the disinfectant nozzle is positioned on one side of the filter screen, and the nozzle end is arranged in an extending mode and close to one side of the opening end of the filter screen.

Furthermore, the disinfectant spouts are distributed uniformly along the circumference of the filter screen.

Furthermore, the nozzle end of the nozzle end is an annular nozzle structure, and the annular nozzle structure is sleeved outside the filter screen.

Furthermore, the disinfectant nozzle is arranged at a distance from the shell and the filter screen.

Further, the filter screen is the platelike structure, and disinfectant generating device includes: the disinfectant aerosol generator is arranged at the bottom of the shell; the disinfectant nozzle, the one end and the disinfectant aerosol generator of disinfectant nozzle are linked together, and the nozzle end of disinfectant nozzle extends the setting towards filter screen one side, and the fan position is located the top of filter screen.

Further, air purification device has air purification mode and filter screen disinfection and sterilization mode, and air purification device still includes: the controller is respectively electrically connected with the fan part and the disinfectant generating device; a detector coupled to the housing, the detector for detecting a concentration of a contaminant on the screen, and/or the detector for detecting a concentration of a contaminant in the gas stream; wherein, the controller controls the air purification device to carry out an air purification mode or a filter screen disinfection and sterilization mode according to the concentration value of the pollutant detected by the detector.

Furthermore, a disinfectant filling opening is formed in the shell.

Use the technical scheme of the utility model, be used for spraying disinfectant to the filter screen through setting up in air purification device, can realize the disinfection operation of disinfecting of bacterium on the filter screen, avoided the filter screen to breed the problem of bacterium after long-term the use easily. Adopt this structure can also avoid air purification device to produce the problem of peculiar smell, improved user's use effectively and experienced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of an air purification device according to the present invention;

fig. 2 shows a schematic structural view of a second embodiment of an air purification device according to the present invention;

fig. 3 shows a schematic view of a first embodiment of a control method of an air cleaning device according to the invention;

fig. 4 shows a schematic diagram of a second embodiment of a control method of an air purification device according to the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 11. an air inlet; 12. an air outlet; 13. a first cavity; 14. a second cavity;

20. filtering with a screen;

30. a disinfectant generating device; 31. a disinfectant aerosol generator; 32. a disinfectant nozzle;

40. a fan section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 and 2, according to an embodiment of the present application, there is provided an air cleaning device including a housing 10, a filter net 20, and a disinfectant generating means 30. Is disposed within the housing 10. The disinfectant generating device 30 is disposed in the housing 10, the disinfectant generating device 30 is used for spraying disinfectant to the filter screen 20, and the fan part 40 is disposed in the housing 10.

In this embodiment, through set up in air purification device and be used for spraying disinfectant to the filter screen, can realize disinfecting the disinfection operation to the bacterium on the filter screen, avoided the filter screen to breed the problem of bacterium easily after long-term the use. Adopt this structure can also avoid air purification device to produce the problem of peculiar smell, improved user's use effectively and experienced.

The housing 10 has an air inlet 11 and an air outlet 12. The housing 10 is divided into a first chamber 13 and a second chamber 14 by the filter screen 20, and the air inlet 11 is communicated with the first chamber 13. The air outlet 12 is communicated with the second cavity 14, and the disinfectant generating device 30 is arranged in the first cavity 13. The air cleaning device further includes a blower portion 40. The fan portion 40 is disposed in the second cavity 14, and the fan portion 40 is configured to suck outside air into the first cavity 13 through the air inlet 11, and then discharge the air out of the housing 10 through the air outlet 12 after being purified by the filter screen 20. The arrangement makes the external air flow enter the air purification device to be filtered and sterilized under the driving of the fan part, thereby effectively improving the sterilization efficiency of the air purification device.

As shown in fig. 2, the screen 20 has a barrel-like structure with one end open. The outer surface of the open end of the sieve 20 is connected to the inner surface of the housing 10, and a first cavity 13 is enclosed between the remaining outer surface of the sieve 20 and the inner surface of the first end of the housing 10. A second cavity 14 is enclosed between the inner surface of the screen 20 and the inner surface of the second end of the housing 10. The fan unit 40 is disposed at one side of the open end of the filter net 20. The filter area of the filter screen can be increased by the arrangement, and the filtering efficiency of the filter screen to air is improved. The air inlets 11 are uniformly distributed along the circumferential direction of the housing 10. The air outlet 12 is opened at the top of the housing 10. The air inlet volume and the air outlet volume of the air purification device can be effectively increased by the arrangement.

Specifically, the disinfectant generating means 30 includes a disinfectant aerosol generator 31 and a disinfectant nozzle 32. A disinfectant aerosol generator 31 is provided at the bottom of the housing 10. One end of the disinfectant nozzle 32 is communicated with the disinfectant aerosol generator 31, and the nozzle end of the disinfectant nozzle 32 is positioned at one side of the filter screen 20 and extends to be close to one side of the opening end of the filter screen 20. The arrangement can ensure that the disinfectant sprayed from the nozzle end of the disinfectant aerosol generator 31 is evenly attached to the filter screen, so that the whole filter screen can realize the comprehensive disinfection and sterilization effects.

In order to further ensure that the disinfectant can be uniformly sprayed on the filter screen, the disinfectant nozzle 32 may be provided in plurality, and the plurality of disinfectant nozzles 32 are uniformly distributed along the circumference of the filter screen 20.

Preferably, the nozzle end of the nozzle end is an annular nozzle structure, and the annular nozzle structure is disposed on the outer side of the filter screen 20. The arrangement enables the whole filter screen to realize disinfection and sterilization.

Wherein the disinfectant nozzle 32 is arranged at a distance from the housing 10 and the filter sieve 20. The arrangement enables the disinfectant to be diffused in the whole shell, and further improves the disinfection and sterilization efficiency of the air purification device.

As shown in fig. 1, the screen 20 may also be provided in a plate-like structure in the present application. The disinfectant generating means 30 comprises a disinfectant aerosol generator 31 and a disinfectant nozzle 32. A disinfectant aerosol generator 31 is provided at the bottom of the housing 10. One end of the disinfectant nozzle 32 is communicated with the disinfectant aerosol generator 31, the nozzle end of the disinfectant nozzle 32 extends towards one side of the filter screen 20, and the fan part 40 is positioned above the filter screen 20. The setting can also make air purification device realize having improved user's use experience to the sterile effect of filter screen sterilization like this.

In order to add disinfectant to the disinfectant aerosol generator 31, a disinfectant injection port is formed in the shell 10.

As shown in fig. 3 and 4, the air cleaning apparatus has an air cleaning mode and a filter screen sterilizing mode, and further includes a controller and a detector. The controller is electrically connected with the fan part 40 and the disinfectant generating device 30 respectively. A detector is connected to the housing 10 for detecting the concentration of contaminants on the screen 20 and for detecting the concentration of contaminants in the air flow. Wherein, the controller controls the air purification device to carry out an air purification mode or a filter screen disinfection and sterilization mode according to the concentration value of the pollutant detected by the detector. Set up like this and can make the user need to start filter screen disinfection mode when disinfecting the disinfection to the filter screen, of course, if the user needs to disinfect the air, also can start filter screen disinfection mode, start simultaneously that fan portion 40 moves in order to drive the air current and pass through the air intake entering casing then through the air outlet outside the casing with normal rotational speed.

Specifically, according to another aspect of the present invention, there is provided a control method of an air purification apparatus, for controlling the air purification apparatus in the above embodiment, as shown in fig. 4, the method comprising the steps of: when the air purifying device performs an air purifying mode, the controller controls the rotating speed of the fan part 40 according to the concentration value of the pollutant detected by the detector so as to purify the air flow, when the air purifying device performs a filter screen disinfection and sterilization mode, the controller controls the fan part 40 to operate at a first rotating speed for a preset time, the controller controls the fan part 40 to stop rotating, after the controller controls the disinfectant generating device 30 to operate for a preset time, the controller controls the disinfectant generating device 30 to stop operating, and then the controller controls the fan part 40 to operate at a second rotating speed so as to suck the disinfectant onto the filter screen 20. Wherein the first rotational speed is greater than the second rotational speed.

After the air purification device carries out the air purification mode for a preset time, when the air purification device is ready to be switched to the filter screen disinfection and sterilization mode, when the detector detects that the concentration of the pollutants is in the preset value, the air purification device continues to execute the air purification mode, and when the detector detects that the concentration of the pollutants is greater than the preset value, the air purification device continues to execute the filter screen disinfection and sterilization mode.

In this application, the utility model provides a technique of inhibiting filter screen germ for a long time through adopting disinfectant aerial fog generating device to arrange the aerial fog spout in air purification device. The filter screen of combining air purification device disappears and kills the mode, can realize the homodisperse of active ingredient on the filter screen surface, when full play effect, can control the quantity of disinfectant, has realized collecting and gathering the center to kill to the microorganism equivalently. In the life cycle of the filter screen, the growth of the microorganisms of the filter screen can be continuously controlled, and the tidiness of the filter screen is ensured.

Because the single disinfectant dosage is less, after the disinfectant is sucked to the filter screen, the influence on the static charge of the filter screen is less, and the purifying performance of the filter screen on particulate pollutants can not be influenced. In addition, the disinfectant has less single use amount and low use frequency, and the control mode can also control the diffusion action time of the disinfectant in the filter screen, so that only a trace amount of disinfectant is diffused into the indoor space, and the indoor air quality is not adversely affected.

Compared with the traditional sprayer, the steam generator is adopted as the dispersing equipment of the disinfectant, the aerosol droplets of the disinfectant generated by the steam generator have smaller particle size, are easier to diffuse in gas, have better dispersibility, and finally realize the integral coverage and uniform dispersion of the surface of the filter screen;

in this application, still increased filter screen disinfection mode, filter screen mode of killing for short, filter screen mode of killing and air purification mode collaborative work. When the pollutant concentration is high, the air purification mode is operated, and when the accumulated operation time of the air purification device reaches the disinfection time limit and the air quality is good, the disinfection mode is started. After the disinfectant is sprayed for a short time and is diffused for a short time, the low speed gear of the air purification device is started, the disinfectant is sucked to the filter screen, then the operation of the air purification device is suspended, the disinfectant stays and diffuses on the filter screen, and the sterilization and killing of microorganisms on the filter screen are realized.

The application provides a filter screen disappears and kills technique is applicable to the air purification device who adopts the filter screen in the air purification field. A disinfectant gas generating device is arranged in the air purifying device, an aerial fog nozzle is arranged in the air inlet space, and an adding inlet of the disinfectant is arranged on the shell of the air purifying device. And when the filter screen killing mode is started, the killing work is executed. Starting disinfectant spraying, and starting the fan to idle after stopping and diffusing for a preset time.

The disinfectant generating device can adopt a pressurizing spraying device module, a heating evaporation type device module, an airflow sweeping evaporation module and an ultrasonic gas generating device module. Wherein, the disinfectant generating device is preferably an ultrasonic gas generating module device which is easy to control and has simple integral structure.

Substances used for controlling the growth of microorganisms in the disinfectant generating device comprise a disinfectant with a bacteriostatic effect and a bactericidal effect, a bacteriostatic agent, a bactericide, an acaricide, a fumigant and the like. The disinfectant generating device of the present application may further include a liquid, solid, or gaseous disinfectant, and may further include a liquid aqueous agent, an organic solvent agent, and a solid agent. Preferably an aqueous disinfectant.

The application air purifier's control mode mainly has two kinds of mode: an air purification mode and a filter screen sterilization mode. The air purification mode can adjust the operating speed according to the detected pollutant concentration. In the air purification mode of this application, the air purification mode of operation is preferred. In the air purification mode of this application, all can manual control, but manual selection purification mode or filter screen kill mode, but manual selection purification rate gear, settlement operating time.

A filter screen killing mode: when the operation time reaches the filter screen killing time limit, the fan is closed, the disinfectant generating device is started to spray the disinfectant, spraying is stopped, the aerial fog is dispersed, then the fan is started and operates in an idling mode, and the disinfectant liquid drops are sucked onto the filter screen. Wherein, disinfectant spraying time can be adjusted according to the size of the air inlet space of the air purification device and the function size of the gas generation device, thereby accurately controlling the disinfectant dosage of single spraying. The diffusion time of the disinfectant in the air can be set according to the air channel layout, the arrangement characteristics of the filter screen, the size of the air inlet space and the sedimentation speed of the aerosol in the air purification device. The purpose is to ensure that the disinfectant is fully diffused in the air inlet space and cannot be completely settled to the bottom. When the air inlet channel of the air purification device has the condition of sufficient diffusion of aerial fog, the diffusion time can not be set, and the aerial fog is mixed with air and sufficiently diffused in the air inlet process.

In the killing mode, the idling operation time of the fan can be combined with the size and the shape of the air inlet space and the air volume of the fan under the idling condition to set the operation time. The aim is to ensure that the disinfectant is sucked all over the sieve.

After the idling operation of the fan is finished, the fan is temporarily closed for a period of time, so that the disinfectant is diffused on the filter screen and plays a role in killing. In the process, the disinfectant can be diffused on the filter material, and can also be diffused on particles such as dust and PM 2.5. The disinfectant can be prevented from being directly pumped and discharged into the indoor space while playing a role in killing, and the negative influence of the disinfectant on the indoor air quality can be controlled to the maximum extent.

Specifically, in this embodiment, the air cleaning device is a configuration in which air is introduced from the periphery and the filter screen is a barrel-shaped filter screen, which is generally introduced from the periphery, and clean air is drawn out from the inside of the tub by the blower and discharged into the indoor space. Therefore, microorganisms such as bacteria and viruses are mainly intercepted on the outer side of the barrel-shaped filter screen. In the structural design, the ultrasonic steam generator is arranged in the air purification device. A feed inlet of the disinfectant is arranged on the shell of the air purification device. As shown in fig. 2, the ultrasonic steam nozzles are uniformly arranged in the outer space at the upper end of the screen, and the disinfectant is added to the reservoir of the ultrasonic generator for use.

In the operation of the air purification device, the air purification device is started, the PM2.5 particle pollutant removal mode is started, and the indoor air is rapidly purified to a good state. When the air purification device is operated for a period of time in an accumulated mode, the preset filter screen killing time limit is reached, if the content of pollutants in the air is very high at the moment, the air purification device continues to execute an air purification mode, when the air quality reaches excellent, the filter screen killing mode is started, the ultrasonic steam generator is started, the disinfectant is continuously sprayed for 10 seconds, then the steam generator is closed, the disinfectant liquid drops are freely dispersed for 5 seconds, then the fan is started and operates in an idling mode, and the disinfectant aerosol liquid drops are sucked onto the filter screen. The blower was stopped for 20 minutes. The disinfectant can diffuse in the filter screen and pollutants to play the role of sterilization and bacteriostasis.

According to another embodiment of the application, the air purification device is in a structure that air is introduced from the bottom and the filter screen is a plate-and-frame filter screen, when the filter screen is transversely installed, air penetrates through the filter screen from the bottom under the action of a fan, purified air is discharged from the upper part of the filter screen, and pollutants such as particulate matters and germs are intercepted on the air inlet surface of the filter screen. For this type of air cleaning device, the internal sterilant vapor generator nozzle varies. The aerosol nozzle is arranged near an air inlet of the shell of the air purification device. When the fan is started, the sprayed disinfectant aerial fog can flow, and turbulent flow is formed in the air inlet space so as to be fully mixed with air.

The specific operation modes are as follows: and starting the air purification device, starting the purification mode, and rapidly reducing the concentration of pollutants in the indoor air. When the air purification device runs for a period of time in an accumulated mode and reaches a preset filter screen killing time limit, if the content of pollutants in the air is very high at the moment, the air purification device continues to execute an air purification mode, and when the air quality reaches excellent, the filter screen killing mode is started. When the killing mode is started, the fan is switched to an idle running mode. Meanwhile, the ultrasonic gas generating device is synchronously started to generate disinfectant aerosol and spray the disinfectant aerosol along the nozzle, after spraying for 10 seconds continuously, the gas generating device is closed, then the fan stops running for 20 minutes, and the disinfectant is diffused in the filter screen and pollutants to play a role in killing.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air purification apparatus, comprising:

a housing (10);

a strainer (20) disposed within the housing (10);

a disinfectant generating device (30), the disinfectant generating device (30) being disposed within the housing (10), the disinfectant generating device (30) being configured to spray disinfectant onto the filter screen (20);

a fan unit (40) provided in the housing (10).

2. The air purification device according to claim 1, wherein the housing (10) has an air inlet (11) and an air outlet (12), the filter screen (20) divides the housing (10) into a first cavity (13) and a second cavity (14), the air inlet (11) is communicated with the first cavity (13), the air outlet (12) is communicated with the second cavity (14), and the disinfectant generating device (30) is disposed in the first cavity (13).

3. The air purification apparatus according to claim 2, further comprising:

the fan portion (40) is arranged in the second cavity (14), the fan portion (40) is used for enabling outside air to flow through the air inlet (11) to suck into the first cavity (13) and then pass through the filter screen (20) to purify and then discharge from the air outlet (12) outside the shell (10).

4. The air purification apparatus according to claim 3, wherein the filter screen (20) is a barrel structure with an open end, an outer surface of the open end of the filter screen (20) is connected to an inner surface of the housing (10), the remaining outer surface of the filter screen (20) and the inner surface of the first end of the housing (10) are enclosed to form the first cavity (13), the inner surface of the filter screen (20) and the inner surface of the second end of the housing (10) are enclosed to form the second cavity (14), and the blower portion (40) is disposed at one side of the open end of the filter screen (20).

5. Air cleaning device according to claim 4, characterized in that at least one of the air inlet opening (11) and the air outlet opening (12) is arranged evenly distributed along the circumference of the housing (10).

6. Air cleaning device according to claim 4, characterized in that the disinfectant generating device (30) comprises:

a disinfectant aerosol generator (31), the disinfectant aerosol generator (31) being disposed at a bottom of the housing (10);

disinfectant spout (32), the one end of disinfectant spout (32) with disinfectant aerosol generator (31) are linked together, the nozzle end of disinfectant spout (32) is located one side of filter screen (20), just the nozzle end is close to the open end one side extension setting of filter screen (20).

7. Air cleaning device according to claim 6, characterized in that the disinfectant nozzle (32) is in plurality, the disinfectant nozzles (32) being evenly distributed along the circumference of the filter screen (20).

8. The air purification apparatus as claimed in claim 6, wherein the nozzle end of the nozzle end is an annular nozzle structure, and the annular nozzle structure is disposed on the outer side of the filter screen (20).

9. Air cleaning device according to any one of claims 6 to 8, characterized in that the disinfectant jet (32) is arranged at a distance from the housing (10) and the filter screen (20).

10. An air cleaning device according to claim 3, wherein the sieve (20) is of plate-like construction, and the disinfectant generating means (30) comprises:

disinfectant spout (32), the one end of disinfectant spout (32) with disinfectant aerosol generator (31) are linked together, the nozzle end orientation of disinfectant spout (32) filter screen (20) one side extends the setting, fan portion (40) are located the top of filter screen (20).

11. The air cleaning apparatus according to claim 3, wherein the air cleaning apparatus has an air cleaning mode and a filter screen sterilizing mode, the air cleaning apparatus further comprising:

the controller is respectively and electrically connected with the fan part (40) and the disinfectant generating device (30);

a detector connected to the housing (10) for detecting the concentration of contaminants on the screen (20) and/or for detecting the concentration of contaminants in the air flow;

wherein, the controller controls the air purification device to carry out an air purification mode or a filter screen disinfection and sterilization mode according to the concentration value of the pollutant detected by the detector.

12. Air cleaning device according to claim 1, characterized in that the housing (10) is provided with a disinfectant injection opening.