CN214276028U

CN214276028U - Negative oxygen ion excitation device and fresh air system comprising same

Info

Publication number: CN214276028U
Application number: CN202022082014.6U
Authority: CN
Inventors: 黄开心
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-09-24
Anticipated expiration: 2030-09-21

Abstract

The utility model discloses a negative oxygen ion excitation device and a fresh air system comprising the same, which comprises a cylinder body and a water spray assembly, wherein an air supply channel is arranged in the cylinder body and is communicated with the inner cavity of the cylinder body and the outside; the water spray assembly comprises a water pump and a spray head, the water pump is connected to the spray head through a pipeline, the spray head is arranged in the inner cavity, a nozzle of the spray head faces the inner wall of the barrel, and the air supply channel is used for sending out negative oxygen ions generated by the spray head to the outside. The utility model provides an anion excitation device reaches new trend system including it passes through tubular construction and water spray assembly and combines, form the space that negative oxygen ion produced, utilize shower nozzle department spun water smoke to hit on the barrel inner wall, make rivers arouse through physics and produce a large amount of negative oxygen ions, and the rheumatism degree that contains negative oxygen ion that the water arouses the mode to send out is great, human impression is better, the negative oxygen ion stability and the diffusion performance that physics arouses the production are better, so whole travelling comfort that can make the people when using improves greatly.

Description

Negative oxygen ion excitation device and fresh air system comprising same

Technical Field

The utility model relates to a new trend equipment field, in particular to negative oxygen ion excitation device reaches new trend system including it.

Background

In modern life, people have increasingly high requirements on health, and particularly in cities, people cannot feel fresh and pollution-free, like clean air in forest. Typically, the average concentration of negative oxygen ions in air on land is 650/cm³The average concentration of negative oxygen ions in the air in the forest community is 5000/cm³Up to 10000 pieces/cm³The above. Therefore, more and more new fans or air purifiers are appearing in the market to create comfortable air environment indoors in a man-made manner. Generally, the inside of the fresh air fan of the type can be provided with the negative oxygen ion exciter to emit a certain amount of negative oxygen ions into the air, so that the environment of the nature negative oxygen ions is simulated, the air can be purified, dust can be adsorbed, and the air quality in the environment is improved.

The conventional negative oxygen ion exciter adopts an electric firing mode, and has the specific principle that positive ions in the air are absorbed by negative electrodes through positive and negative electrodes with applied voltages, and negative ions are repelled to an opposite motor, so that air negative oxygen ions are generated. However, the way of generating negative oxygen ions by electric shock does not have too much natural comfort feeling similar to the body, and the expansion performance is poor. And even if negative oxygen ions are generated, the environmental humidity is low, and the comfort level of the human body cannot be improved to a certain degree.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that the negative oxygen ion who sends out the excitation device who produces the negative oxygen ion in order to overcome the electric shock among the prior art produces the effect not good, and the relatively poor defect of human comfort provides a negative oxygen ion excitation device and includes its new trend system.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

an oxygen anion excitation device, characterized in that it comprises:

the air supply device comprises a barrel, an air supply channel and a control device, wherein the barrel is internally provided with the air supply channel which is communicated with the inner cavity of the barrel and the outside;

the water spray assembly comprises a water pump and a sprayer, the water pump is connected to the sprayer through a pipeline, the sprayer is arranged in the inner cavity, a nozzle of the sprayer faces the inner wall of the barrel, and the air supply channel is used for conveying negative oxygen ions generated by the sprayer to the outside.

This anion excitation device passes through tube structure and the combination of water spray subassembly, form the space that a negative oxygen ion produced, utilize shower nozzle department spun water smoke to hit on the barrel inner wall, make rivers arouse through physics and produce a large amount of negative oxygen ions, owing to be water arouses the mode, so the rheumatism degree that contains the negative oxygen ion of seeing off is great, human impression is better, the negative oxygen ion stability and the diffusion property that the physics arouses the production simultaneously are better, the relatively poor problem of negative oxygen ion stability that the mode of having solved the electric shock and sending produced, so whole travelling comfort that can the people when using improves greatly.

Preferably, an air inlet and an air outlet are arranged on the barrel, the air supply channel is formed between the air inlet and the air outlet, the air inlet is formed in the side wall of the barrel, the air outlet is formed in the top of the barrel, and the air inlet and the air outlet are communicated with the inner cavity and the outside. Air intake and air outlet all set up on the barrel, and the barrel inner chamber is the air supply passageway promptly, need not additionally set up the passageway and occupy the inner chamber space to the air supply effect is also good, and the inner chamber does not have the convection current dead angle almost, and the air outlet setting is at the barrel top, and the steam in the air-out pipe is blown in the reduction that can the at utmost.

Preferably, at least a part of the region of the cylinder body having the negative oxygen ions is located on an air path formed by the air supply passage. The air supply channel passes through the spraying covering surface of the spray head, and the speed of conveying negative oxygen ions by the air supply channel can be improved.

Preferably, a water outlet is further formed in the cylinder and located at the bottom of the cylinder. The water outlet is arranged at the bottom of the cylinder body so as to discharge residual water in the cylinder body as soon as possible.

Preferably, the bottom of the cylinder body is provided with an inverted conical structure, and the tip of the inverted conical structure is set as the water outlet. The inverted cone structure can better drain water, and the bottom of the barrel is prevented from generating accumulated water to cause the humidity in the barrel to be too high.

Preferably, the inner side wall of the barrel is covered with a silencing layer, the contact surface of the water jet of the spray head and the inner side wall of the barrel is an excitation surface, and the silencing layer can completely cover the excitation surface. The sound attenuation layer can reduce the sound when the water jet hits on the inner wall.

Preferably, the inner side wall of the barrel is provided with at least one clamping piece, a clamping groove is formed between the clamping piece and the inner side wall of the barrel, the edge of the silencing layer can be fixed in the clamping groove, and the silencing layer and the barrel are mutually fixed through the clamping piece. The silencing layer and the barrel are fixed mutually through the clamping grooves.

Preferably, a gasket is further arranged between the sound-absorbing layer and the inner side wall of the cylinder, and two side surfaces of the gasket are respectively in contact with the inner side wall of the cylinder and the outer side wall of the glass layer. The gasket enables an air layer to be arranged between the silencing layer and the inner wall of the barrel, and the silencing effect is further guaranteed.

Preferably, a top baffle is covered on one side of the air inlet, the top baffle extends from the inner side wall of the cylinder body to the direction of the inner cavity, and the top baffle is arranged between the spray head and the air inlet. Set up the top baffle between shower nozzle and the air intake to the shower nozzle is located the one side of keeping away from the air intake of baffle, so can stop rivers directly to flow to air intake department through the setting of top baffle, avoids too much water to get into the air-supply line and influences normal use.

Preferably, the air inlet is surrounded by an air inlet duct, the air inlet duct extends from the inner side wall of the barrel to the inner cavity, the air inlet duct comprises a bottom plate, the bottom plate is set to be in an inclined state, and the inclined state is that the inner cavity inclines to one side close to the top baffle from the direction of the outer side of the barrel. The bottom plate of the air inlet duct inclines upwards from inside to outside so as to prevent the water flow condensed inside from flowing into the external air inlet pipe connected with the air inlet to a certain extent.

Preferably, the edge of the top baffle is provided with a blocking eave, the blocking eave extends and protrudes towards the direction of the spray head, and a drainage opening is formed in the position, connected with the cylinder, of the blocking eave. The baffle eaves are used for guiding water on the surface of the baffle on the top of the baffle to the water outlet below, and the water is prevented from directly dripping into the air inlet duct.

Preferably, a diversion trench is further arranged on the surface of one end, located in the inner cavity, of the air inlet duct, and two ends of the diversion trench are communicated to the diversion opening and the bottom surface of the barrel. The diversion trench is used for further guiding water, so that the water is guided along the diversion trench, and the water flow is prevented from flowing towards the direction in the air inlet duct at the opening of the air inlet duct.

Preferably, the water used by the water spray assembly is purified water. The negative oxygen ion excitation device uses purified water to carry out physical excitation of negative oxygen ions, and can effectively improve the generation concentration of the negative oxygen ions compared with the use of common tap water.

The utility model provides a fresh air system, its characterized in that, fresh air system includes first tuber pipe, electrostatic precipitator unit and as above negative oxygen ion excitation device, electrostatic precipitator unit's export is passed through first tuber pipe communicate in air supply channel's entry, the ozone that electrostatic precipitator unit produced passes through first tuber pipe is carried extremely air supply channel, and with water spray component spun water is in cross in the air supply channel, water spray component spun water is used for getting rid of ozone.

Ozone generated by the electrostatic dust removal unit of the fresh air system is removed through water sprayed by a water spray assembly arranged in the negative oxygen ion excitation device when flowing through an air supply channel of the negative oxygen ion excitation device, so that the influence of ozone on people is eliminated, and the air is cleaned by the water, so that the purified air is cleaner.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in:

the utility model provides an anion excitation device reaches new trend system including it passes through tubular construction and water spray assembly and combines, form the space that negative oxygen ion produced, utilize shower nozzle department spun water smoke to hit on the barrel inner wall, make rivers arouse through physics and produce a large amount of negative oxygen ions, owing to be the water arouses the mode, so the rheumatism degree that contains negative oxygen ion of seeing off is great, human impression is better, the negative oxygen ion stability and the diffusion property that the physics arouses the production simultaneously are better, the relatively poor problem of negative oxygen ion stability that the mode that has solved the electric shock and sent produced, so whole travelling comfort that can make the people when using improves greatly.

Drawings

Fig. 1 is a schematic structural diagram of an anion excitation device according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of an internal structure of the anion excitation device according to the preferred embodiment of the present invention.

FIG. 3 is a partial structural view of part A in FIG. 2

Fig. 4 is a schematic cross-sectional view of an anion excitation device according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a fresh air system according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural diagram of another view angle of the fresh air system according to the preferred embodiment of the present invention.

Description of reference numerals:

cylinder 1

Negative oxygen ion gas stream 10

Air inlet 11

Air outlet 12

Water outlet 13

Upper flange 14

Water spray assembly 2

Water pump 21

Spray head 22

Line 23

Noise damping layer 3

Fastener 4

Gasket 5

Air inlet duct 6

Top baffle 61

Base plate 62

Drainage opening 63

Guiding gutter 64

Eaves 7

First air duct 81

Electrostatic dust removal unit 82

Fan 83

Air supply duct 84

Filter screen 85

Purified water unit 86

Water storage tank 87

Accumulated water flow 20

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, which are not intended to limit the scope of the invention as described herein.

As shown in fig. 1-4, the present embodiment provides a negative oxygen ion excitation device and a fresh air system including the same, which includes a cylinder 1 and a water spray assembly 2, wherein the cylinder 1 has an air supply channel therein, and the air supply channel communicates an inner cavity of the cylinder 1 with the outside; the water spray assembly 2 comprises a water pump 21 and a spray head 22, the water pump 21 is connected to a water source and the spray head 22 through a pipeline 23, the spray head 22 is arranged in the inner cavity, a nozzle of the spray head 22 faces the inner wall of the barrel body 1, and an air supply channel is used for sending out negative oxygen ions generated by the spray head 22 to the outside.

The space that a negative oxygen ion produced is formed in barrel 1 structure, shower nozzle 22 department spun water smoke hits on barrel 1 inner wall, makes rivers arouse through physics and produces a large amount of negative oxygen ions, so the rheumatism degree that contains the negative oxygen ion that makes negative oxygen ion air current 10 in the air supply passageway send out is great, and human impression is better, and the negative oxygen ion stability and the diffusion performance that the physics arouses the production simultaneously are also better, can make the travelling comfort of people when using improve greatly.

The water pressure provided by the water pump 21 to the nozzle 22 may be set to be between 0.01MPa and 20MPa, preferably 0.25MPa in this embodiment, depending on different requirements. In this embodiment, the cylinder 1 is made of ABS plastic, but other shapes or materials of the cylinder 1 may be used in other embodiments. In addition, the distance between the spray head 22 and the inner wall of the barrel 1 facing the spray head can be set to any distance between 1cm and 2m according to different requirements, and preferably, 21cm is adopted in the embodiment.

Further, an air inlet 11 and an air outlet 12 are arranged on the barrel 1, an air supply channel is formed between the air inlet 11 and the air outlet 12, the air inlet 11 is arranged on the side wall of the barrel 1, the air outlet 12 is arranged at the top of the barrel 1, and the air inlet 11 and the air outlet 12 are both communicated with the inner cavity and the outside. The air inlet 11 and the air outlet 12 are both arranged on the cylinder body 1, so that the inner cavity of the cylinder body 1 is an air supply channel, the channel does not need to be additionally arranged to occupy the inner cavity space, the air supply effect is good, and convection dead angles hardly exist. And the air outlet 12 is arranged at the top of the cylinder 1, so that steam can be reduced to the greatest extent from blowing into the air outlet pipe. In addition, at least a part of the area of the tube 1 having negative oxygen ions is located on the air passage formed by the air supply passage, that is, the air supply passage passes through the spray coverage surface of the spray head 22, so that the negative oxygen ion delivery rate of the air supply passage can be increased.

A water outlet 13 is also arranged in the cylinder body 1, and the water outlet 13 is positioned at the bottom of the cylinder body 1. The water outlet 13 is arranged at the bottom of the cylinder 1 so as to discharge residual water in the cylinder 1 as soon as possible. Preferably, in this embodiment, the bottom of barrel 1 sets up to the structure of the inverted cone, and the point portion of the structure of the inverted cone sets up to delivery port 13, can carry out the drainage better, avoids barrel 1 bottom to produce ponding and make the interior humidity of bucket too big.

In addition, an air inlet duct 6 is further arranged around the air inlet 11 on the side wall of the barrel 1, the air inlet duct 6 extends from the inner side wall of the barrel 1 towards the inner cavity, the air inlet duct 6 comprises a top baffle 61 and a bottom plate 62, and the top baffle 61 extends from the inner side wall of the barrel 1 towards the inner cavity and is arranged between the spray head 22 and the air inlet 11. The bottom plate 62 is inclined in a direction from the inner cavity toward the outside of the cylindrical body 1 toward the top baffle 61. The bottom plate 62 of the air inlet duct 6 is inclined upward from inside to outside in order to prevent the flow of water condensed inside from flowing into the outer air inlet duct connected to the air inlet 11 to some extent. In other embodiments, the top baffle 61 may be separately disposed without the air inlet duct 6, so as to extend from the inner sidewall of the barrel 1 to the inner cavity and be located between the nozzle 22 and the air inlet 11. The spray head 22 is located on the side of the baffle far away from the air inlet 11, and can prevent water flow from directly flowing to the air inlet 11 through the arrangement of the top baffle 61, so that the influence of excessive water entering the air inlet pipe on normal use is avoided.

Further, a visor 7 may be provided at an edge portion of the top barrier 61. The baffle eaves 7 extend and protrude towards the spray head 22, and a drainage opening 63 is formed at the connecting position of the baffle eaves 7 and the cylinder 1. The blocking eaves 7 are used for guiding water on the surface of the blocking top blocking plate 61 to the water outlet 13 below, so that the water is prevented from directly dropping into the air inlet duct 6. And, the surface of one end of the air inlet duct 6 located in the cavity can also be provided with a diversion trench 64, and the two ends of the diversion trench 64 are communicated to the drainage opening 63 and the bottom surface of the cylinder 1. The guiding gutter 64 is used to guide water further, so that the water is guided along the guiding gutter 64 to avoid the water flow from flowing towards the direction inside the air inlet duct 6 at the opening of the air inlet duct 6. The top baffle 61 guides the accumulated water flow 20 to converge to the drainage opening 63 on the surface of the top baffle 61 through the drainage opening 63 and the diversion trench 64, then guides the accumulated water flow to the bottom of the cylinder through the diversion trench 64, and then flows to the water outlet 13 along the inverted conical ground.

In addition, the inner side wall of the cylinder 1 is covered with the silencing layer 3, the contact surface of the water jet of the spray head 22 and the inner side wall of the cylinder 1 is an excitation surface, and the silencing layer 3 can completely cover the excitation surface. The sound-deadening layer 3 is provided to reduce the sound of the water jet when it hits the inner wall. In this embodiment, a glass plate is used as the sound deadening layer 3, and in other embodiments, other materials capable of absorbing impact sound may be used as the sound deadening layer 3.

Specifically, in this embodiment, the inside wall of barrel 1 is provided with at least one fastener 4, forms the draw-in groove between the inside wall of fastener 4 and barrel 1, and in the limit portion on noise damping layer 3 can be fixed in the draw-in groove, through fastener 4 reciprocal anchorage between noise damping layer 3 and the barrel 1, set up to two fasteners 4 of central symmetry in this embodiment, block respectively and locate the both sides opposite side on noise damping layer 3. Preferably, a gasket 5 is further arranged between the silencing layer 3 and the inner side wall of the cylinder 1, and two side surfaces of the gasket 5 are respectively contacted with the inner side wall of the cylinder 1 and the outer side wall of the glass layer. The gasket 5 is arranged to form an air layer between the silencing layer 3 and the inner wall of the cylinder, so as to further ensure the silencing effect.

Also, the source of water used to form the mist at the nozzle 22 of the water spray assembly 2 may be purified water, i.e., purified water, such as water obtained by ultrafiltration, reverse osmosis, or other various purification methods. Compared with common tap water, the purified water can effectively improve the generation concentration of negative oxygen ions. Experimental data show that the concentration of the generated negative oxygen ions can reach 20000/cm at most when municipal tap water is supplied to the negative ion excitation device³And the concentration of the generated negative oxygen ions can reach 100 ten thousand per cm by adopting the purified water³Left and right. Therefore, the anion excitation device can also provide purified water for generating higher-concentration negative oxygen ions by an external water purification system.

As shown in fig. 5 and fig. 6, the present embodiment further provides a fresh air system, which includes a first air duct 81, an electrostatic dust removal unit 82, and the above negative oxygen ion excitation device. Further, the outlet of the electrostatic precipitation unit 82 is communicated with the inlet of the air supply channel, i.e. the inlet of the air inlet duct 6, through the first air duct 81. Ozone generated by the electrostatic dust collection unit 82 is conveyed to the air supply channel through the first air pipe 81, and is intersected with water sprayed by the water spray assembly 2 in the air supply channel, and the water sprayed by the water spray assembly 2 is used for removing the ozone. When ozone generated by the electrostatic dust removal unit 82 of the fresh air system flows through the air supply channel of the negative oxygen ion excitation device, the ozone is removed through water sprayed by the water spray component 2 arranged in the negative oxygen ion excitation device, and the influence of the ozone on people is eliminated. The electrostatic dust removal unit 82 is located at the lower position of the negative oxygen ion excitation device, air exhaust is facilitated, and miniaturization of equipment is facilitated in an up-and-down stacking mode.

The negative oxygen ion excitation device is matched with a pumping and air-supplying system and the cylinder body 1 to form an air-supplying channel integrally. An air inlet duct 6 arranged at the air inlet 11 is connected to a first air pipe 81 and a fan 83, and the fan 83 is arranged between the electrostatic dust collection unit 82 and the negative oxygen ion excitation device to provide wind power for driving so as to form a negative oxygen ion airflow 10; the air outlet 12 can be connected with an external air supply duct 84, and further, the air outlet 12 can be externally connected with the external air supply duct 84 through an upper flange 14. Preferably, the air supply duct 84 may be provided with a plurality of folding structures, which can further block relatively large water vapor from entering the external space, so as to perform a certain filtering function.

The fresh air system further comprises a filter screen 85, the filter screen 85 is arranged on an air path between the electrostatic dust removal unit 82 and the fan 83, ozone removing substances and an air filter layer are arranged in the filter screen 85, ozone generated in the electrostatic dust removal process can be partially removed, most of dust and water vapor in air are removed, and the cleanliness of the air and the use safety of the electrostatic dust removal unit are improved. In this embodiment, the ozone-removing substance is activated carbon. In other embodiments, the screen 85 may be disposed at any position on the air duct behind the electrostatic precipitation unit 82.

In this embodiment, the fresh air system further comprises a water circulation device, which comprises a purified water unit 86 and a water storage tank 87. The water pump 21 is connected to the water circulation device and is sequentially arranged with the purified water unit 86 and the water storage tank 87 from top to bottom, the inlet of the purified water unit 86 is communicated with the water outlet 13 through a pipeline, the outlet of the purified water unit is communicated with the water storage tank 87, and the water pump 21 pumps water for the water spraying assembly 2 through the water storage tank 87. The water circulating device can be used after the water which is excited in the negative oxygen ion excitation device and flows back to the water storage tank 87 is purified by the purified water unit 86, namely, the water is pumped to the water spraying assembly 2 by the water pump 21. In other embodiments, the water pipe may be directly connected to the spray head 22, and the water generated in the cylinder 1 is directly discharged through the water outlet 13. In order to keep the water in the water tank 87 sufficient, the purified water unit 86 may be connected to an external water source in other embodiments, since the air will take a part of the water, and when the water level in the water tank 87 is lower than the set water level, the water in the water tank 87 may be supplemented in an intelligent control manner.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. An oxygen anion excitation device, characterized in that it comprises:

2. The negative oxygen ion excitation device of claim 1, wherein the cylinder is provided with an air inlet and an air outlet, the air supply channel is formed between the air inlet and the air outlet, the air inlet is arranged on the side wall of the cylinder, the air outlet is arranged on the top of the cylinder, and the air inlet and the air outlet are both communicated with the inner cavity and the outside.

3. The negative oxygen ion excitation device according to claim 2, wherein at least a part of the area of the cylinder containing the negative oxygen ions is located on an air path formed by the air supply passage.

4. The negative oxygen ion excitation device of claim 1, wherein a water outlet is further provided in the cylinder, and the water outlet is located at the bottom of the cylinder.

5. The negative oxygen ion excitation device of claim 4, wherein the bottom of the cylinder has an inverted conical structure, and the tip of the inverted conical structure is provided as the water outlet.

6. The negative oxygen ion excitation device of claim 1, wherein the inner side wall of the cylinder is covered with a sound-deadening layer, the contact surface between the water jet of the nozzle and the inner side wall of the cylinder is an excitation surface, and the sound-deadening layer can completely cover the excitation surface.

7. The negative oxygen ion excitation device of claim 6, wherein at least one fastener is disposed on the inner side wall of the cylinder, a slot is formed between the fastener and the inner side wall of the cylinder, the edge of the sound-deadening layer can be fixed in the slot, and the sound-deadening layer and the cylinder are fixed to each other by the fastener.

8. The negative oxygen ion excitation device of claim 6, wherein a gasket is further disposed between the sound-absorbing layer and the inner sidewall of the cylinder, and two sides of the gasket are respectively in contact with the inner sidewall of the cylinder and the outer sidewall of the sound-absorbing layer.

9. The negative oxygen ion excitation device of claim 2, wherein a top baffle is disposed on a side of the air inlet, the top baffle extends from an inner sidewall of the cylinder toward the inner cavity, and the top baffle is disposed between the nozzle and the air inlet.

10. The negative oxygen ion excitation device according to claim 9, wherein an air inlet duct is defined around the air inlet, the air inlet duct extends from the inner side wall of the cylinder toward the inner chamber, the air inlet duct includes a bottom plate, the bottom plate is disposed in an inclined state, and the inclined state is inclined from the inner chamber toward the outer side of the cylinder toward a side close to the top baffle.

11. The negative oxygen ion excitation device according to claim 10, wherein an edge of the top baffle is provided with a baffle edge, the baffle edge extends and protrudes in a direction towards the spray head, and a drainage opening is formed at a connection position of the baffle edge and the cylinder.

12. The negative oxygen ion excitation device of claim 11, wherein a flow guide groove is further provided on a surface of one end of the air inlet duct located in the inner cavity, and both ends of the flow guide groove are communicated to the flow guide opening and the bottom surface of the cylinder.

13. The negative oxygen ion excitation device of claim 1, wherein the water used by the water spray assembly is purified water.

14. A fresh air system, characterized in that, the fresh air system includes a first air pipe, an electrostatic dust removal unit and the negative oxygen ion excitation device of any one of claims 1 to 13, the outlet of the electrostatic dust removal unit is communicated with the inlet of the air supply channel through the first air pipe, ozone generated by the electrostatic dust removal unit is conveyed to the air supply channel through the first air pipe and is intersected with water sprayed by the water spray assembly in the air supply channel, and the water sprayed by the water spray assembly is used for removing the ozone.