CN212431263U

CN212431263U - Air purifier

Info

Publication number: CN212431263U
Application number: CN202021228286.6U
Authority: CN
Inventors: 曾焕雄; 毛建平; 王墅; 董双幸
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-29
Anticipated expiration: 2030-06-29

Abstract

The utility model provides an air purifier, which comprises a discharge electrode needle and a discharge electrode tip, wherein the outer side of the discharge electrode needle is used for forming a gas channel for gas to pass through; the tip of the discharge electrode is positioned in the gas channel and is arranged on the outer wall of the discharge electrode needle; wherein, the discharge electrode needle is the tubular structure, is provided with the purge hole with the barrel chamber intercommunication of discharge electrode needle on the section of thick bamboo wall of discharge electrode needle, and the barrel chamber of discharge electrode needle can be used for holding the washing liquid to make the washing liquid in the discharge electrode needle flow to gas passage in through the purge hole, in order to wash gas passage's wall, thereby solve the abluent problem of being not convenient for of air purifier among the prior art.

Description

Air purifier

Technical Field

The utility model relates to an air purification field particularly, relates to an air purifier.

Background

The air purification and electric purification technology is widely applied to industrial dust removal, household dust removal, sterilization, oil smoke collection, treatment and the like, and is popular with consumers due to the characteristics of no need of replacing filter materials and the advantages of sterilization, disinfection and the like.

If the adsorption pole or the dust collecting plate is cleaned at variable time after the dust and the oil smoke are collected by electric purification, the arc risk is increased while the dust collecting efficiency is influenced, and the danger of damaging the pole plate exists. However, when the polar plate is cleaned, the polar plate needs to be disassembled, or a special tool is used for assisting in cleaning, so that the polar plate cannot be cleaned completely, and manpower and time are wasted.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide an air purifier to solve the air purifier among the prior art and be not convenient for abluent problem.

In order to achieve the above object, the utility model provides an air purifier, it includes: the outer side of the discharge electrode needle is used for forming a gas channel for gas to pass through; the discharge electrode tip is positioned in the gas channel and arranged on the outer wall of the discharge electrode needle; the discharge electrode needle is of a tubular structure, and a cleaning hole communicated with a barrel cavity of the discharge electrode needle is formed in the barrel wall of the discharge electrode needle, so that cleaning liquid in the discharge electrode needle flows into the gas channel through the cleaning hole, and the wall surface of the gas channel is cleaned.

Furthermore, the discharge electrode tip is provided with a fluid channel for the circulation of cleaning liquid and a nozzle communicated with the fluid channel, and the cleaning hole is communicated with the fluid channel, so that the cleaning liquid in the cylinder cavity of the discharge electrode needle sequentially passes through the cleaning hole and the fluid channel and then is sprayed out from the nozzle to clean the wall surface of the gas channel.

Further, the fluid passage is spirally arranged around a predetermined axis, which is perpendicular to the axis of the discharge electrode needle.

Further, the spiral surface of the fluid passage is disposed gradually closer to the predetermined axis in a direction away from the discharge electrode needle.

Furthermore, the discharge electrode tip comprises a connecting plate and a tip part connected with the connecting plate, the tip part is in a spiral shape, and a fluid channel is formed on the outer surface of the tip part; the connecting plate is used for being connected with the discharge electrode needle and is provided with a cylinder cavity used for communicating the discharge electrode needle and a communication hole of a fluid channel.

Furthermore, one end of the discharge electrode needle is a closed end which enables the cylinder cavity of the discharge electrode needle to be isolated from the outside, and the other end of the discharge electrode needle is an open end which enables the cylinder cavity of the discharge electrode needle to be communicated with the outside, so that cleaning liquid is introduced into the cylinder cavity of the discharge electrode needle through the open end.

Further, the air purifier also comprises an input connector, and the input connector is arranged at the opening end of the discharge electrode needle and is connected with the liquid supply part through the input connector.

Furthermore, the number of the discharge electrode tips is multiple, the number of the cleaning holes is multiple, and the multiple cleaning holes and the multiple discharge electrode tips are arranged in a one-to-one correspondence manner; the discharge electrode tips are arranged at intervals along the extending direction of the discharge electrode needle; or, a plurality of discharge electrode tips are arranged at intervals along the circumferential direction of the discharge electrode needle.

Furthermore, the number of the discharge electrode tips is multiple, the number of the cleaning holes is multiple, and the multiple cleaning holes and the multiple discharge electrode tips are arranged in a one-to-one correspondence manner; the multiple groups of discharge electrode tips are arranged at intervals along the extension direction of the discharge electrode needles.

Further, each group of discharge electrode tips comprises a plurality of discharge electrode tips, and the plurality of discharge electrode tips of each group of discharge electrode tips are arranged at intervals along the circumferential direction of the discharge electrode needle.

Furthermore, the air purifier also comprises a drying device which is communicated with the gas channel and/or the cylinder cavity of the discharge electrode needle so as to introduce drying gas into the gas channel and/or the cylinder cavity of the discharge electrode needle.

By applying the technical scheme of the utility model, the air purifier comprises a discharge electrode needle and a discharge electrode tip arranged on the outer wall of the discharge electrode needle, the outer side of the discharge electrode needle is used for forming a gas channel for gas to pass through, and the discharge electrode tip is positioned in the gas channel so as to treat bacteria and/or viruses carried in the gas channel when the discharge reaction occurs at the discharge electrode tip, thereby achieving the effects of disinfection and purification of the gas; the discharge electrode needle is of a cylindrical structure, a cleaning hole communicated with a cylinder cavity of the discharge electrode needle is formed in the cylinder wall of the discharge electrode needle, and the cylinder cavity of the discharge electrode needle can be used for containing cleaning liquid so that the cleaning liquid in the discharge electrode needle flows into the gas channel through the cleaning hole to clean the wall surface of the gas channel; meanwhile, the discharge electrode needle and the discharge electrode tip can be cleaned; compared with the prior art, the air purifier needs to be disassembled into the polar plates or a specific tool is used for assisting in cleaning, the cleaning of the air purifier is more convenient, and the cleaning effect is better, so that the problem that the air purifier in the prior art is not convenient to clean is solved.

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:

figure 1 shows a schematic structural view of an embodiment of an air purifier according to the present invention;

FIG. 2 shows a longitudinal cross-sectional view of the air purifier of FIG. 1;

FIG. 3 shows an enlarged view of the air purifier of FIG. 2 at A;

fig. 4 shows a schematic structural view of a discharge electrode tip according to another embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. an air purifier;

10. an adsorption electrode; 11. a gas channel;

20. discharging an electrode needle;

30. a discharge electrode tip; 31. a tip portion; 311. an electrode plate segment; 32. a connecting plate; 33. a fluid channel;

40. an input connector; 50. fixing a bracket; 60. a support member; 70. an insulating member.

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 should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

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.

The utility model provides an air purifier 100, please refer to fig. 1 to 4, the air purifier 100 comprises a discharge electrode needle 20 and a discharge electrode tip 30, the outer side of the discharge electrode needle 20 is used for forming a gas channel 11 for gas to pass through; the discharge electrode tip 30 is positioned in the gas channel 11, and the discharge electrode tip 30 is arranged on the outer wall of the discharge electrode needle 20; the discharge electrode needle 20 is a tubular structure, and a cleaning hole communicated with a tubular cavity of the discharge electrode needle 20 is formed in the tubular wall of the discharge electrode needle 20, so that cleaning liquid in the discharge electrode needle 20 flows into the gas channel 11 through the cleaning hole to clean the wall surface of the gas channel 11.

In the air purifier 100 of the present invention, the air purifier 100 includes a discharge electrode needle 20 and a discharge electrode tip 30 disposed on an outer wall of the discharge electrode needle 20, an outer side of the discharge electrode needle 20 is used for forming a gas channel 11 for gas to pass through, the discharge electrode tip 30 is located in the gas channel 11, so that when the discharge reaction of the discharge electrode tip 30 occurs, bacteria and/or viruses carried in the gas channel 11 can be treated, thereby achieving the effects of disinfection, sterilization and gas purification; the discharge electrode needle 20 is of a cylindrical structure, a cleaning hole communicated with a cylinder cavity of the discharge electrode needle 20 is formed in the cylinder wall of the discharge electrode needle 20, and the cylinder cavity of the discharge electrode needle 20 can be used for containing cleaning liquid, so that the cleaning liquid in the discharge electrode needle 20 flows into the gas channel 11 through the cleaning hole to clean the wall surface of the gas channel 11; meanwhile, the discharge electrode needle 20 and the discharge electrode tip 30 can be cleaned; compared with the prior art, the air purifier needs to be disassembled into the polar plates or a special tool is used for assisting in cleaning, the air purifier 100 is convenient to clean, and the cleaning effect is good, so that the problem that the air purifier in the prior art is not convenient to clean is solved.

Moreover, by timely cleaning the wall surface of the gas channel 11, the discharge electrode needle 20 and the discharge electrode tip 30, the service life of the air purifier 100 can be prolonged, damage to the adsorption electrode 10 due to arc discharge can be avoided, and the use safety can be improved.

Specifically, the air purifier 100 further includes an adsorption electrode 10, at least a portion of the discharge electrode needle 20 is inserted into the adsorption electrode 10, and a gas channel 11 is formed between the discharge electrode needle 20 and the adsorption electrode 10; that is, cleaning the wall surface of the gas passage 11 includes cleaning the inner wall of the adsorption electrode 10.

Specifically, the adsorption electrode 10 has a cylindrical structure.

The cleaning liquid discharged through the cleaning holes is mainly used to clean the inner wall of the tube of the adsorption electrode 10, the outer wall of the tube of the discharge electrode needle 20, and the outer wall of the discharge electrode tip 30.

Specifically, the discharge electrode tip 30 has a fluid passage 33 through which a cleaning liquid flows and a nozzle opening communicating with the fluid passage 33, and the cleaning hole communicates with the fluid passage 33 so that the cleaning liquid in the cylinder chamber of the discharge electrode needle 20 passes through the cleaning hole and the fluid passage 33 in this order and is ejected from the nozzle opening, and the wall surface of the gas passage 11 is cleaned using the ejected cleaning liquid.

In the present embodiment, one arrangement of the discharge electrode tip 30 is: the fluid passage 33 is spirally arranged around a predetermined axis which is perpendicular to the axis of the discharge electrode needle 20. By arranging the fluid channel 33 in a spiral shape, when the cleaning liquid passes through the fluid channel 33, the cleaning liquid water flow continuously impacts the spiral layered interface, so that layered spraying is generated; moreover, the spiral fluid channel 33 has a plurality of layered interfaces, each of which can form a conical spray surface, thereby realizing multi-layer spraying, so that the spray range of the cleaning liquid sprayed out through the spray opening of the fluid channel 33 is wide, and all parts of the adsorption electrode 10 can be cleaned. In addition, the spiral fluid channel 33 can also make the water flow pressure at the nozzle of the fluid channel 33 higher, so as to clean the adsorption pole 10 and ensure the cleaning effect on the adsorption pole 10.

Alternatively, the spiral surface of the fluid passage 33 is disposed gradually closer to the predetermined axis in a direction away from the discharge electrode needle 20.

Specifically, the discharge electrode tip 30 includes a connection plate 32 and a tip 31 connected to the connection plate 32, the tip 31 is spiral, and a fluid passage 33 is formed on the outer surface of the tip 31; the connecting plate 32 is used for connecting with the discharge electrode needle 20, and the connecting plate 32 is provided with a communicating hole for communicating the cylinder cavity of the discharge electrode needle 20 and the fluid channel 33; the connection plate 32 is provided on the outer wall of the discharge electrode needle 20.

Specifically, the discharge electrode tip 30 is a spiral nozzle. Alternatively, as shown in fig. 4, the tip portion 31 includes a plurality of electrode plate segments 311 connected in sequence, and two adjacent electrode plate segments 311 are disposed at a first predetermined angle, so that the plurality of electrode plate segments 311 enclose a spiral fluid channel 33; the length of the electrode plate section 311 gradually decreases in sequence along the direction away from the discharge needle 20, so that the spiral surface of the fluid channel 33 gradually becomes smaller; the electrode plate segment 311 of the plurality of electrode plate segments 311, which is close to the discharge needle 20, is connected to the connection plate 32 and is disposed at a second predetermined angle with respect to the connection plate 32. Two adjacent electrode plate segments 311 may form a layered interface.

Wherein, the first predetermined angle and the second predetermined angle are both larger than 0 degree and smaller than 90 degrees.

In the present embodiment, another arrangement of the discharge electrode tip 30 is: as shown in fig. 3, the discharge electrode tip 30 has a columnar structure, and the outer peripheral surface of the columnar structure is gradually reduced in the direction away from the discharge electrode needle 20; the fluid channel 33 is a cylindrical groove formed on the cylindrical structure, the cylindrical groove extends along the extending direction of the cylindrical structure and penetrates through two end faces of the cylindrical structure, a notch at one end of the cylindrical groove is used for being communicated with the cleaning hole, and a notch at the other end of the cylindrical groove is used for forming a nozzle.

Optionally, the adsorption electrode 10 and the discharge electrode needle 20 are both strip-shaped cylinders; the length of the adsorption electrode 10 is greater than that of the discharge electrode needle 20 along the extending direction of the adsorption electrode 10 and the discharge electrode needle 20.

In order to make the cleaning liquid enter the cylinder cavity of the discharge electrode needle 20, one end of the discharge electrode needle 20 is a closed end which isolates the cylinder cavity of the discharge electrode needle 20 from the outside, and the other end of the discharge electrode needle 20 is an open end which enables the cylinder cavity of the discharge electrode needle 20 to be communicated with the outside, so that the cleaning liquid is introduced into the cylinder cavity of the discharge electrode needle 20 through the open end.

In this embodiment, the air cleaner 100 further includes an input connector 40, and the input connector 40 is disposed at an open end of the discharge electrode needle 20 to be connected to the liquid supply part through the input connector 40.

In this embodiment, the air purifier 100 further includes a liquid supply pump connected to the discharge electrode needle 20 to supply the cleaning liquid into the cylinder chamber of the discharge electrode needle 20.

Specifically, the liquid outlet of the liquid supply part is connected with the inlet of the liquid supply pump, the liquid supply pump is connected with the input connector 40 through a liquid supply pipe, that is, the outlet of the liquid supply pump is connected with one end of the liquid supply pipe, and the other end of the liquid supply pipe is connected with the input connector 40, so that the cleaning liquid in the liquid supply part enters the cylinder cavity of the discharge electrode needle 20 through the liquid supply pipe and the input connector 40 under the action of the liquid supply pump.

Optionally, the fluid supply pump has a pressure sensing component to adjust the intensity of the spray through the pressure sensing component to enhance or reduce the cleaning effort.

Specifically, the air purifier 100 further includes a filter member disposed on the liquid inlet pipe connected to the inlet of the liquid supply pump to filter the cleaning liquid entering the liquid supply pump. The liquid outlet of the liquid supply part is connected with the inlet of the liquid supply pump through a liquid inlet pipe, and the filter part is arranged at one end of the liquid inlet pipe connected with the liquid supply pump so as to filter impurities in cleaning liquid to be fed into the liquid supply pump and avoid blockage.

Optionally, the cleaning solution is clear water, heated clear water or an oily cleaning solution, and a proper cleaning solution can be selected according to actual requirements; the cleaning time period may be set according to the contamination of the adsorption electrode 10.

Optionally, the number of the discharge electrode tips 30 is multiple, so as to ensure the sterilization and disinfection effect of the gas in the gas channel 11 under the action of the multiple discharge electrode tips 30; the purge orifice is a plurality of, and a plurality of purge orifices set up with a plurality of discharge electrode pointed end 30 one-to-ones to guarantee the cleaning performance to adsorption electrode 10 through a plurality of discharge electrode pointed ends 30 and a plurality of purge orifices.

In the present embodiment, one arrangement of the plurality of discharge electrode tips 30 is: the plurality of discharge electrode tips 30 are arranged at intervals along the extending direction of the discharge electrode needles 20; alternatively, the plurality of discharge electrode tips 30 are arranged at intervals in the circumferential direction of the discharge electrode needles 20.

In the present embodiment, another arrangement of the plurality of discharge electrode tips 30 is: the plurality of discharge electrode tips 30 are divided into a plurality of groups, and the plurality of groups of discharge electrode tips 30 are arranged at intervals along the extending direction of the discharge electrode needles 20, that is, the plurality of cleaning holes are divided into a plurality of groups, and the plurality of groups of cleaning holes are arranged at intervals along the extending direction of the discharge electrode needles 20.

Each group of discharge electrode tips 30 comprises a plurality of discharge electrode tips 30, the plurality of discharge electrode tips 30 of each group of discharge electrode tips 30 are arranged at intervals along the circumferential direction of the discharge electrode needle 20, that is, each group of cleaning holes comprises a plurality of cleaning holes, and the plurality of cleaning holes of each group of cleaning holes are arranged at intervals along the circumferential direction of the discharge electrode needle 20.

In this embodiment, the air purifier 100 further includes a drying device, the drying device is communicated with the gas channel 11 and/or the cylinder cavity of the discharge electrode needle 20 to introduce a drying gas into the gas channel 11 and/or the cylinder cavity of the discharge electrode needle 20, so as to dry the cylinder inner wall of the adsorption electrode 10, the cylinder outer wall of the discharge electrode needle 20, and the discharge electrode tip 30; and/or the adsorption electrode 10 and/or the discharge electrode needle 20 are made of a conductive material, so that the adsorption electrode 10 and/or the discharge electrode needle 20 are/is dried by electrifying the adsorption electrode 10 and/or the discharge electrode needle 20, that is, the adsorption electrode 10 and/or the discharge electrode needle 20 are/is heated by electrifying the adsorption electrode 10 and/or the discharge electrode needle 20, and the drying effect is further achieved.

Specifically, the air purifier 100 further includes a fixing bracket 50, the fixing bracket 50 has a fixing hole, and the discharge electrode needle 20 is inserted into the fixing hole of the fixing bracket 50 to support the discharge electrode needle 20 through the fixing bracket 50. Optionally, the fixing bracket 50 is located at one end of the discharge electrode needle 20 near its open end.

Optionally, the fixing bracket 50 is an annular plate.

Specifically, the air purifier 100 further includes a supporter 60, and the supporter 60 is disposed between the fixing bracket 50 and the outer wall of the discharge electrode needle 20 to enhance structural stability between the fixing bracket 50 and the discharge electrode needle 20.

Alternatively, the support 60 has a rod-shaped structure, and both ends of the support 60 are connected to the fixing bracket 50 and the outer wall of the discharge electrode needle 20, respectively.

Optionally, there are a plurality of supporting members 60, the supporting members 60 are divided into two groups, and the two groups of supporting members 60 are respectively connected to two plate surfaces of the fixing bracket 50; that is, the plurality of supporting members 60 of one group of supporting members 60 are all connected to one of the board surfaces of the fixing bracket 50, and the plurality of supporting members 60 of the other group of supporting members 60 are all connected to the other board surface of the fixing bracket 50.

Alternatively, a plurality of supports 60 of each set of supports 60 are arranged at intervals in the circumferential direction of the discharge electrode needles 20.

Specifically, an insulating member 70 is disposed between the fixing bracket 50 and the discharge electrode needle 20 to prevent the discharge electrode tip 30 from being electrically conducted through the fixing bracket 50.

Specifically, the insulating member 70 is an insulating sleeve having an annular hole, at least a part of the cylindrical section of the discharge electrode needle 20 is inserted into the annular hole, and the fixing bracket 50 is connected to the outer wall of the insulating sleeve; optionally, the annular inner wall of the fixed bracket 50 is in contact with the outer wall of the insulating sleeve.

It should be noted that the cleaning operation of the air cleaner 100 is performed after the air cleaner 100 has completed the sterilization work, that is, the discharge electrode tip 30 is in a non-conductive state when the air cleaner 100 is in the cleaning state.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

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 data so used is 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.

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.

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 purifier, comprising:

the electrode discharging device comprises a discharging needle (20), wherein a gas channel (11) for allowing gas to pass through is formed on the outer side of the discharging needle (20);

a discharge electrode tip (30), the discharge electrode tip (30) being located within the gas channel (11), the discharge electrode tip (30) being disposed on an outer wall of the discharge electrode needle (20);

the discharge electrode needle (20) is of a cylindrical structure, and a cleaning hole communicated with a cylinder cavity of the discharge electrode needle (20) is formed in the cylinder wall of the discharge electrode needle (20), so that cleaning liquid in the discharge electrode needle (20) flows into the gas channel (11) through the cleaning hole to clean the wall surface of the gas channel (11).

2. The air cleaner as claimed in claim 1, wherein the discharge electrode tip (30) has a fluid passage (33) for flowing a cleaning liquid therethrough and a nozzle opening communicating with the fluid passage (33), and the cleaning hole communicates with the fluid passage (33) so that the cleaning liquid in the cylinder chamber of the discharge electrode needle (20) passes through the cleaning hole and the fluid passage (33) in order and is ejected from the nozzle opening to clean the wall surface of the gas passage (11).

3. The air cleaner according to claim 2, wherein the fluid passage (33) is spirally arranged around a predetermined axis, which is perpendicular to an axis of the discharge electrode needle (20).

4. The air cleaner according to claim 3, wherein the spiral surface of the fluid passage (33) is disposed gradually closer to the predetermined axis in a direction away from the discharge electrode needle (20).

5. The air cleaner according to claim 2, wherein the discharge electrode tip (30) includes a connection plate (32) and a tip portion (31) connected to the connection plate (32), the tip portion (31) being spiral-shaped, an outer surface of the tip portion (31) forming the fluid passage (33); the connecting plate (32) is used for being connected with the discharge electrode needle (20), and the connecting plate (32) is provided with a communicating hole for communicating a cylinder cavity of the discharge electrode needle (20) and the fluid channel (33).

6. The air purifier as claimed in claim 1, wherein one end of the discharge needle (20) is a closed end for isolating the barrel cavity of the discharge needle (20) from the outside, and the other end of the discharge needle (20) is an open end for communicating the barrel cavity of the discharge needle (20) with the outside, so that a cleaning solution is introduced into the barrel cavity of the discharge needle (20) through the open end.

7. The air purifier of claim 6, further comprising:

an input connector (40), wherein the input connector (40) is arranged at the opening end of the discharge electrode needle (20) so as to be connected with a liquid supply part through the input connector (40).

8. The air cleaner according to claim 2, wherein the discharge electrode tips (30) are plural, the cleaning holes are plural, and the plurality of cleaning holes are provided in one-to-one correspondence with the plurality of discharge electrode tips (30);

wherein a plurality of the discharge electrode tips (30) are arranged at intervals along the extending direction of the discharge electrode needle (20); or, a plurality of discharge electrode tips (30) are arranged at intervals along the circumferential direction of the discharge electrode needle (20).

9. The air cleaner according to claim 2, wherein the discharge electrode tips (30) are plural, the cleaning holes are plural, and the plurality of cleaning holes are provided in one-to-one correspondence with the plurality of discharge electrode tips (30); the discharge electrode tips (30) are divided into a plurality of groups, and the discharge electrode tips (30) are arranged at intervals along the extending direction of the discharge electrode needle (20).

10. The air cleaner according to claim 9, wherein each group of the discharge electrode tips (30) includes a plurality of the discharge electrode tips (30), the plurality of the discharge electrode tips (30) of each group of the discharge electrode tips (30) being arranged at intervals in a circumferential direction of the discharge electrode needle (20).

11. The air purifier of claim 1, further comprising:

and the drying device is communicated with the gas channel (11) and/or the barrel cavity of the discharge electrode needle (20) so as to introduce drying gas into the gas channel (11) and/or the barrel cavity of the discharge electrode needle (20).