A gas-water mixed negative oxygen ion generator

Abstract

The present invention discloses a gas-water mixing negative oxygen ion generator, comprising a sealed water container, the inner cavity of which contains water for generating negative oxygen ions, an openable lid provided on the water container, and an air outlet nozzle provided on the lid; a gas-liquid mixing tube provided in the inner cavity of the water container, the gas-liquid mixing tube being electrically connected to the ground; one end of the gas-liquid mixing tube being connected to a constricted tube, the other open end being located above the water surface, and a water intake port provided on the constricted tube; a vertical water baffle provided in the water container parallel to the air outlet nozzle, the open end being located between the vertical water baffle and the inner wall of the water container. The present invention can generate high-concentration ecological negative oxygen ions.

Description

Technical Field

[0001] The present invention relates to the technical field of negative oxygen ions, in particular to a gas-water mixed friction electrification negative oxygen ion generator. Background Art

[0002] People will feel dizzy if they stay in a closed room in the city for a long time. When they come to forests, beaches, waterfalls and other places, they will feel refreshed. This is the effect of negative oxygen ions in the air.

[0003] Negative oxygen ions are divided into two categories: the first category is negative oxygen ions produced by natural environments such as beaches, forests, grasslands and waterfalls. It has a long lifespan (half-life of 1 minute), small particle size, high activity, and negative oxygen ion concentration is higher than the positive ion concentration {(1.1~1.2):1}, which are called ecological negative oxygen ions; the second category is negative oxygen ions produced by corona discharge, rays, ultraviolet rays, etc. It has a short lifespan (a few seconds), large particle size, low activity, and negative oxygen ion concentration equal to the positive ion concentration. It also contains substances that are harmful to health, such as ozone and nitrogen oxides, and has obvious electrostatic effects. The first category of negative oxygen ions is beneficial to health, while the second category of negative oxygen ions has little effect on health and is mainly used for disinfection and sterilization.

[0004] Currently, the popular ones on the market are corona discharge negative oxygen ion generators, which use high-voltage tip discharge to ionize the air to produce negative oxygen ions. Air is a neutral molecule, and the number of positive and negative ions generated during ionization is equal. Since the dust, bacteria, viruses, etc. in the air are positively charged, they neutralize some of the negative ions. Therefore, the actual concentration of negative oxygen ions formed by ionized air is still slightly lower than the concentration of positive ions. The concentration of ecological negative oxygen ions generated around the seaside, forests, grasslands and waterfalls is slightly higher than the concentration of positive ions. According to detection, the concentration is (1.1~1.2):1. The negative oxygen ions produced by artificial water hammer and air-excited negative oxygen ion generators are also ecological-grade negative oxygen ions, and the concentration of negative oxygen ions is also slightly higher than the concentration of positive ions, but the increase is not large.

[0005] The gas-excited negative oxygen ion generator described in CN110620333B can produce ecological-grade negative oxygen ions at a concentration of approximately 3 million per cm³, but the ratio of negative oxygen ion concentration to positive ion concentration is (1.1-1.2):1, a negligible difference. A negative oxygen ion generation method and apparatus described in CN114498306B can produce ecological-grade negative oxygen ions with a ratio of negative oxygen ion concentration to positive ion concentration greater than 1.5, but the concentration is only about 300,000 per cm³, which is too low. Summary of the Invention

[0006] In view of the defects of the prior art, the present invention provides a negative oxygen ion generator.

[0007] A gas-water mixing negative oxygen ion generator includes a sealed water container, the inner cavity of the water container contains water for generating negative oxygen ions, an openable cover is provided on the water container, and an air outlet is provided on the cover; a gas-liquid mixing tube is provided in the inner cavity of the water container, and the gas-liquid mixing tube is electrically connected to the ground; one end of the gas-liquid mixing tube is connected to a necking tube, and the other open end is located above the water surface, and a water suction port is provided on the necking tube; a vertical water baffle parallel to the air outlet is also provided in the water container, and the open end is located between the vertical water baffle and the inner wall of the water container.

[0008] Optionally, the apertures at both ends of the necked tube are large, the aperture in the middle is small, and a necking portion is formed in the middle of the necked tube; the water absorption hole is opened on the side wall of the necking portion, and the diameter of the water absorption hole is 0.05~2mm; the water absorption hole is opened on the side wall of the necking portion, and the water absorption hole is covered with a microporous ceramic plate or a microporous fiberboard; the material of the gas-liquid mixing tube is a metal tube or a conductive plastic tube, and the gas-liquid mixing tube is electrically connected to the ground through a ground wire; the gas-liquid mixing tube adopts a spiral tube, a corrugated tube or a bundled tube; the inner diameter of the gas-liquid mixing tube is 1~10mm; it also includes a horizontal water baffle, which is located below the air outlet nozzle and at least partially blocks the air outlet nozzle; the necked tube is formed in the gas-liquid mixing tube; it also includes a water absorption pipe, one end of which opens at the center of the gas-liquid mixing tube.

[0009] The beneficial effects of the present invention are as follows: compared with the existing corona discharge type air negative oxygen ion generator, the present invention generates negative oxygen ions by mixing air and water under the combined action of the friction electrification principle and the Lenard principle, so that the concentration of negative oxygen ions is high. The concentration of negative oxygen ions generated by a negative oxygen ion generation method and device introduced in CN114498306B in the prior art is only about 300,000 / cm³, while the concentration of negative oxygen ions generated by the present invention can reach about 10 million / cm³, and they are ecological grade negative oxygen ions, and the negative oxygen ions have a long life, small particle size, high activity, and are not Containing ozone and nitrogen oxides; compared with the gas-excited negative oxygen ion generator introduced in CN110620333B, the present invention neutralizes the generated positive ions in time through the ground wire, so that the negative oxygen ion concentration of the generated negative oxygen ion gas is much higher than the positive ion concentration, and the ratio of the negative oxygen ion concentration to the positive ion concentration can reach more than 1.5; since the number of negative oxygen ions generated is much greater than the positive ions, the neutralization effect of the positive ions is greatly reduced, and the negative oxygen ion concentration in the space involved can reach a very high level, the retention time is longer, and the pressure requirement for the air pump is low, and the energy consumption is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of Example 1 of the present invention;

[0011] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle neck tube and the connecting nut;

[0012] Figure 3 This is a schematic structural diagram of Example 2 of the present invention;

[0013] Figure 4 This is a schematic structural diagram of Example 3 of the present invention;

[0014] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle neck and the connecting nut;

[0015] Figure 6 This is a schematic structural diagram of Example 4 of the present invention;

[0016] Figure 7 This is a schematic structural diagram of Example 5 of the present invention;

[0017] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle cluster neck tube and the connecting nut;

[0018] Figure 9 yes Figure 7 Middle AA section;

[0019] Figure 10 This is a schematic diagram of the connection between the air-water mixed friction electrification negative oxygen ion generator of the present invention, the air pump and the air storage tank.

[0020] In the figure, 1-water container, 101-shallow platform, 2-cover, 201-air outlet, 202-water inlet, 203-sealing ring, 2A-flange cover, 3-spiral tube, 3A-corrugated tube, 3B-straight tube, 3C-bundled spiral tube, 4-neck reduction tube, 401-water suction hole, 402-neck reduction, 4A-bundled neck reduction tube, 5-horizontal water baffle, 6-vertical water baffle, 7-one-way valve, 8-connecting nut, 9-ground wire, 10-water, 11-air inlet, 12-water level gauge, 13-water suction pipe, 14-air pump, 15-air storage tank. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings, so that the above-mentioned and other objects, features, and advantages of the present invention will become more apparent. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; emphasis is placed on illustrating the subject matter of the present invention.

[0022] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but are merely used by the inventor to enable a clear and consistent understanding of the invention. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the invention is provided for illustration purposes only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

[0023] It should be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a "module" includes reference to one or more of such modules. The advantages and features of the present invention and methods of accomplishing the same may be more readily understood by reference to the detailed description of the embodiments below and the accompanying drawings. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the invention to those skilled in the art. Example 1

[0024] See also Figure 1 The air-water mixed friction electrification negative oxygen ion generator of the present invention includes a sealed water container 1. The inner cavity of the water container 1 is filled with water 10 for generating negative oxygen ions. The water is preferably purified pure water. Since the impurity content in pure water is relatively low, the damage to the inner wall of the container and the components therein during the high-speed movement of water droplets is relatively small, which is conducive to extending its service life.

[0025] In this embodiment, the water container 1 can be a cylindrical container, which is placed vertically, with a sealed bottom and an openable lid 2 on the top. The lid 2 can be connected to the container 1 by means of threads, snaps, etc., and a sealing ring 203 is provided at the connection. An air outlet 201 and a water inlet 202 are provided on the lid 1. The negative oxygen ion air generated in the container 1 can be ejected through the air outlet 201, and the water inlet 202 can be sealed by, for example, a lid or a plug. The lid or plug can prevent gas from being ejected from the water inlet 202 on the one hand, and can effectively prevent dust and the like from entering the container 1 on the other hand. Water can be added to the container 1 through the water inlet 202 by opening the lid or the plug.

[0026] A gas-liquid mixing tube 3 is provided in the container 1. The material of the gas-liquid mixing tube 3 is a metal tube or a conductive plastic tube. The gas-liquid mixing tube 3 is electrically connected to the ground via a ground wire 9. The inner diameter of the gas-liquid mixing tube is 1 to 10 mm. If it is too small, the flow rate is too small. If it is too large, it is not conducive to the friction and collision between the gas-liquid mixture and the inner wall of the gas-liquid mixing tube 3, resulting in a low concentration of negative oxygen ions. One end of the gas-liquid mixing tube 3 is connected to the necking tube 4, and the other end is open above the water surface. A vertical water baffle 6 is also provided in the container 1, parallel to the gas outlet nozzle 201. The vertical water baffle 6 is close to the outlet of the gas-liquid mixing tube 3. Since the water vapor ejected from the gas-liquid mixing tube 3 must be ejected through the gas outlet nozzle 201, the vertical water baffle 6 is provided above the path of the water gas. Gas molecules can bypass the vertical water baffle 6 and be ejected from the gas outlet nozzle 201, while water molecules will be blocked by the vertical water baffle 6, thereby reducing the content of water molecules ejected from the gas outlet nozzle 201.

[0027] The constricted tube 4 is arranged below the water surface and is connected to the gas source, for example, it can be connected to the high pressure gas source pipe through a one-way valve 7. The one-way valve 7 can prevent the water in the container 1 from entering the gas source through the constricted tube 4. Figure 2 As shown, connecting nuts 8 can be provided at both ends of the necking tube 4, which are connected to the gas-liquid mixing tube 3 and the high-pressure gas source tube respectively through the connecting nuts 8. The necking tube 4 is a variable diameter hollow tube with large apertures at both ends and small apertures in the middle. A necking neck 402 is formed in the middle of the necking tube 4. The cross-sectional area of ​​the necking neck 402 is 10-40% of the cross-sectional area of ​​the two ends of the necking tube. Water absorption holes 401 are provided on the side wall of the necking neck 402. The diameter of the water absorption holes is 0.05-2 mm, preferably 0.3 mm, and the number is 1-1000. If the diameter of the water absorption holes is too large, too much water will flow into the gas-liquid mixing tube 3, which is not conducive to the formation of dispersed small water droplets. If the diameter of the water absorption holes is too small, insufficient water will flow into the gas-liquid mixing tube 3, which will cause the concentration of negative oxygen ions generated to decrease. However, it is usually very difficult to process a large number of micropores on the small diameter neck portion 402. Therefore, it is more preferred that the present invention open several water absorption holes with larger diameters on the neck portion 402. For example, three water absorption holes can be set, and the water absorption holes are covered with a microporous ceramic plate or a microporous fiber plate, thus forming a large number of tiny water absorption holes.

[0028] See again Figure 1 In this embodiment, the gas-liquid mixing tube 3 is a spiral tube. The spiral tube can effectively increase the flow path of the gas-liquid mixture, so that the gas-liquid mixture can have more effective friction with the spiral tube. The gas outlet section of the spiral tube extends above the water surface in the inner cavity of the water container 1. A vertical water baffle 6 is provided at the spiral tube outlet 302 of the spiral tube 3. The vertical water baffle 6 is fixed to the inner wall of the water container 1 by connecting screws. In this way, the spiral tube outlet 302 is located between the inner wall of the water container 1 and the vertical water baffle 6. The water vapor ejected from the spiral tube outlet 302 repeatedly collides between the inner wall and the vertical water baffle 6 (such as Figure 1 As shown by the dotted line with the arrow in the middle), the gas molecules can be ejected from between the inner wall and the vertical water baffle 6, and the water molecules will be adsorbed on the inner wall and the vertical water baffle 6 during the collision process. Through such repeated collisions, the content of water molecules ejected from the air outlet nozzle 201 is greatly reduced.

[0029] like Figure 10 As shown, the negative oxygen ion generator can be supplied with gas by an air pump 14, that is, the air pump 14 is connected to the water container 1 through a one-way valve 7, and a gas storage tank 15 can also be provided between the air pump 14 and the water container 1, and the gas storage tank 15 can be used to temporarily store gas or adjust the air pressure. Figure 10 The connection method between the air pump 14, the air storage tank 15 and the water container 1 is also applicable to the embodiments described later in the present invention.

[0030] During operation, the air pump 14 provides compressed air. After passing through the air storage tank 15, the compressed air enters the necked tube 4 through the one-way valve 7. At the necked tube 402, due to the smaller diameter of the tube, the gas flow rate increases and a negative pressure is generated. The water 10 in the water container 1 is sucked into the necked tube 4 through the water suction hole 401 and enters the gas-liquid mixing tube 3. The water-gas mixture continuously rubs and collides with the tube wall in the gas-liquid mixing tube 3. According to the principle of triboelectric charging, the gas-liquid mixing tube 3 is charged with a positive charge. The electrons supplied by the ground wire 9 neutralize the positive charge, and the water-gas mixture is negatively charged. In addition, the collision and dispersion of water in the gas-liquid mixing tube 3 cause the small water droplets to be negatively charged according to the Lenard principle. Under the combined action of the triboelectric principle and the Lenard principle, the gas-water mixture discharged from the gas-liquid mixing tube outlet 302 becomes a high-concentration and high-humidity negative oxygen ion gas. After the vertical water baffle 6 removes some water droplets, it finally becomes negative oxygen ion air with a moderate humidity and is ejected from the air outlet 201.

[0031] Compared with the existing corona discharge type air negative oxygen ion generator, the present invention generates negative oxygen ions through the combined action of the friction electrification principle and the Lenard principle through the mixing of air and water. In this way, the concentration of negative oxygen ions is high. The concentration of negative oxygen ions generated by a negative oxygen ion generation method and device introduced in CN114498306B in the prior art is only about 300,000 / cm³. The concentration of negative oxygen ions generated by the present invention can reach about 10 million / cm³, and they are ecological grade negative oxygen ions. In addition, the negative oxygen ions have a long life, small particle size, high activity, and do not contain ozone and nitrogen. Oxygen compounds; compared with the gas-excited negative oxygen ion generator introduced in CN110620333B, the present invention neutralizes the generated positive ions in time through the ground wire, so that the negative oxygen ion concentration of the generated negative oxygen ion gas is much higher than the positive ion concentration, and the ratio of the negative oxygen ion concentration to the positive ion concentration can reach more than 1.5; since the number of negative oxygen ions generated is much greater than the positive ions, the neutralization effect of the positive ions is greatly reduced, and the negative oxygen ion concentration in the space involved can be made very high, the retention time is longer, and the pressure requirement for the air pump is low, and the energy consumption is low. Example 2

[0032] This embodiment focuses on the differences from embodiment 1, and the similarities are not repeated here. Figure 3 As shown, compared with embodiment 1, a horizontal water baffle 5 is added in this embodiment, which is arranged horizontally. The horizontal water baffle 5 is located below the air outlet nozzle 201 and at least partially blocks the air outlet nozzle 201. Figure 3 For example, one end of the horizontal water baffle 5 is fixed to the inner wall of the water container 1, and the other end terminates at the left side of the air outlet 201. On the left side, a passage for water vapor to pass through is formed between the horizontal water baffle 5 and the inner wall of the container 1, and the water vapor is ejected from the air outlet 201 through this passage. The horizontal water baffle 5 is used for secondary water blocking. Since the gas-water mixture flows upward, the horizontal water baffle 5 can effectively block the upward-flowing water molecules, thereby reducing the ejected water droplets, and the gas molecules can bypass the horizontal water baffle 5 and be ejected from the air outlet 201. Example 3

[0033] See also Figure 4 and Figure 5The air-water mixed friction electrification negative oxygen ion generator of this embodiment is composed of a horizontally placed water container 1, a flange cover 2A, a bellows 3A, a necked tube 4, a horizontal water baffle 5, a vertical water baffle 6, an air inlet nozzle 11 and a water level gauge 12. The water container 1 is a horizontally placed cylindrical body with two open ends. The two ends of the water container 1 are connected to the flange cover 2A by screws, and a sealing diagram 203 is provided at the connection. The inner cavity of the water container 1 contains water 10, and a splash proof platform 101 is provided on the upper side wall of the water container 1. A vertical water baffle 6 is provided downwardly from the splash proof platform. An air outlet nozzle 201 is provided through the splash proof platform 101, and a horizontal water baffle 5 is provided 5 to 50 mm below the air outlet nozzle 201. An air inlet nozzle 11 and a water level gauge 12 are provided through the upper side wall of the water container 1. The water level gauge 12 is used to observe and control the water level. The air inlet nozzle 11 extends through the side wall of the water container 1 and connects to a hollow straight tube. The hollow straight tube connects to the necking tube 4, which in turn connects to the bellows 3A. The side wall of the necking portion 402 of the necking tube 4 has a water suction hole 401. The cross-sectional area of ​​the necking portion 402 is 20-50% of the area of ​​the pipe at both ends of the necking tube 4. Two water suction holes 401 are provided, each with a diameter of 0.3 mm. The air inlet section of the necking tube 4 and the bellows 3A are submerged below the water surface in the water container 1. The bellows outlet 3A02 of the bellows 3A extends above the water surface in the water container, facing upward, diagonally upward, or horizontally. A horizontal negative oxygen ion generator facilitates its low profile, making it more suitable for smaller spaces. Example 4

[0034] The improvement of this embodiment mainly lies in the necked tube. In the previous embodiment, the necked tube needs to have a variable diameter structure and a water inlet micro-hole, which is complex in structure, difficult to process, and high in cost. In addition, since the necked tube needs to be connected to the gas source and the gas-liquid mixing tube through the connecting nuts 8 at both ends, the connecting nuts 8 are immersed in water for a long time and have to withstand high-pressure gas. This can easily cause the connecting nuts 8 to loosen, reducing their service life. Figure 6 In this embodiment, the constricted tube is formed in the gas-liquid mixing tube. The gas-water mixing friction electrification negative oxygen ion generator comprises a water container 1, a cover 2, a straight tube 3B, a vertical water baffle 6, an air inlet nozzle 11, a water level gauge 12, and a water suction pipe 13.

[0035] It should be noted that in this embodiment, the gas-liquid mixing tube uses a straight tube 3B, but those skilled in the art will appreciate that other tube forms, such as spiral tubes or bellows, may also be used. The water container 1 is a cylindrical body with an open top and a closed bottom. The water container 1 is sealed and detachably connected to the lid 2 by a threaded or clipped connection, with a seal 203 provided at the connection. The inner cavity of the water container 1 contains water 10. An air inlet nozzle 11 is provided through a hole in the upper sidewall of the water container 1. The air inlet nozzle 11 is connected to an air source at the air inlet end outside the water container 1.

[0036] The air inlet nozzle 11 is located at one end of the inner cavity of the water container 1 and is connected to the straight pipe 3B. The straight pipe 3B is arranged above the water surface. A hole is provided on the lower side wall of the straight pipe 3B to connect to the upper end of the water suction pipe 13. The upper end of the water suction pipe 13 extends into the center of the straight pipe 3B. Since the gas flow rate is the highest in the center of the straight pipe and the negative pressure generated is the largest, the lower end of the water suction pipe 13 extends below the water surface of the inner cavity of the water container. A vertical water baffle 6 is provided at the air outlet end of the straight pipe 3B, and a water level gauge 12 is provided on the other side of the side wall of the water container 1 opposite to the air inlet nozzle 11. The cover body 2 is a shallow container with an open lower end and a closed upper end. The open lower end is sealed with the water container 1. An air outlet nozzle 201 and a water inlet 202 that pass through the cover body 2 are provided on the cover body 2, and a dust cover is provided on the outside of the water inlet 202.

[0037] In this way, the water suction pipe 13 and the straight pipe 3B (gas-liquid mixing pipe) form a necked pipe, which does not need to be processed separately. At the same time, the necked pipe and the gas-liquid mixing pipe can be prevented from being connected by nuts, which increases the service life of the equipment. Example 5

[0038] See also Figure 7 、 Figure 8 、 Figure 9 Compared with Example 1, the difference between this embodiment is that the spiral tube 3 of Example 1 is replaced by a bundled spiral tube 3C, and the necked tube 4 of Example 1 is replaced by a bundled necked tube 4A. Other aspects are the same as Example 1. Since the flow path of the gas-liquid mixture is increased, this embodiment is suitable for making a negative oxygen ion generator with a large gas flow rate.

[0039] Although the technology has been illustrated and described with respect to one or more embodiments, changes and / or modifications may be made to the illustrated examples without departing from the spirit and scope of the appended claims. In particular, with respect to the various functions performed by the components or structures (assemblies, devices, circuits, systems, etc.) described above, terms used to describe such components (including references to "means") are intended to correspond to any component or structure that performs the designated function of the described component (e.g., functionally equivalent), even if not structurally equivalent to the disclosed structure that performs the function in the example embodiments described herein, unless otherwise indicated. In addition, although a particular feature may have been disclosed with respect to one embodiment among several embodiments, such feature may be combined with one or more other features in other embodiments as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "comprising," "including," "having," "having," "containing," or variations thereof are used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "comprising."

[0040] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A gas-water mixed negative oxygen ion generator, characterized in that: It includes a sealed water container, the inner cavity of which is filled with water for generating negative oxygen ions, an openable cover is provided on the water container, and an air outlet is provided on the cover; a gas-liquid mixing tube is provided in the inner cavity of the water container, and the gas-liquid mixing tube is electrically connected to the ground; one end of the gas-liquid mixing tube is connected to the necking tube, and the other open end is located above the water surface, and a water suction port is provided on the necking tube; a vertical water baffle parallel to the air outlet is also provided in the water container, and the open end is located between the vertical water baffle and the inner wall of the water container.

2. The negative oxygen ion generator according to claim 1, characterized in that: The apertures at both ends of the necked tube are large, and the aperture in the middle is small, and the middle portion of the necked tube forms a necking portion.

3. The negative oxygen ion generator according to claim 2, characterized in that: The water absorption hole is opened on the side wall of the neck portion, and the diameter of the water absorption hole is 0.05-2 mm.

4. The negative oxygen ion generator according to claim 2, characterized in that: The water absorption hole is opened on the side wall of the neck portion, and the water absorption hole is covered with a microporous ceramic plate or a microporous fiber plate.

5. The negative oxygen ion generator according to claim 1, characterized in that: The gas-liquid mixing tube is made of a metal tube or a conductive plastic tube, and is electrically connected to the ground via a ground wire.

6. The negative oxygen ion generator according to claim 1, characterized in that: The gas-liquid mixing tube is a spiral tube, a corrugated tube or a bundled tube.

7. The negative oxygen ion generator according to claim 1, characterized in that: The inner diameter of the gas-liquid mixing tube is 1-10 mm.

8. The negative oxygen ion generator according to claim 1, characterized in that: It also includes a horizontal water baffle, which is located below the air outlet and at least partially covers the air outlet.

9. The negative oxygen ion generator according to claim 1, characterized in that: The constricted tube is formed in the gas-liquid mixing tube.

10. The negative oxygen ion generator according to claim 9, characterized in that: It also includes a water suction pipe, one end of which opens at the center of the gas-liquid mixing pipe.

Images