CN111359393B - Device and method for preparing hydrated air negative ions and application - Google Patents
Device and method for preparing hydrated air negative ions and application Download PDFInfo
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- CN111359393B CN111359393B CN202010206263.3A CN202010206263A CN111359393B CN 111359393 B CN111359393 B CN 111359393B CN 202010206263 A CN202010206263 A CN 202010206263A CN 111359393 B CN111359393 B CN 111359393B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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Abstract
The invention discloses a preparation device and a preparation method and application of hydrated air anions. This preparation facilities include atmospheric pressure balance storehouse and respectively with the air feed module and the water supply module of atmospheric pressure balance storehouse intercommunication, the inside laser catalysis module that is provided with in atmospheric pressure balance storehouse, the atmospheric pressure balance storehouse is used for the air current that the air feed module provided and the liquid stream that the water supply module provided to react, produces superfine liquid drop, the laser catalysis module be used for with superfine liquid drop changes the hydrated air anion into. The device has the advantages of simple structure, low cost and long service life. The device for preparing the hydrated air anions has the advantages of no ozone release, stable and high yield, long propagation distance, low energy consumption and the like.
Description
Technical Field
The invention relates to a device and a method for preparing hydrated air negative ions and application.
Background
Air anions, an important constituent of air, have attracted considerable attention in recent years due to their unique efficacy. Researches prove that the air negative ions have obvious effects on health maintenance, clinical physiotherapy, air purification, organic matter degradation and the like. When people are around the waterfall and deep in the forest, people usually feel cool and relaxed spirit, and the environment is rich in high-concentration air negative ions. The natural phenomena of falling of waterfall, large rain pont, lightning, lake wave rippling and the like can all cause the natural generation of air negative ions. Different from the traditional corona discharge method for preparing the air negative ions, the air negative ions prepared by utilizing the water-gas two-phase friction collision have a plurality of advantages and utilization values. The modern technology realizes the simulation of the micro waterfall by means of a novel water-gas collision technology, and moves the artificial waterfall into thousands of households.
Although the air negative ions prepared by the water-gas method have the advantages of no ozone by-product, environmental protection and the like, the commercial air purification equipment for preparing the hydrated air negative ions by the method in the market at present has the defects of high energy consumption, unstable yield, large equipment floor area and the like, and the service life of the commercial hydrated air negative ion generating device needs to be improved urgently.
Disclosure of Invention
Aiming at the technical problems, the invention provides a novel preparation device of hydrated air anions, which has the advantages of simple structure, low cost, environmental friendliness and repeated use. The device for preparing the hydrated air anions has the advantages of no ozone release, stable and high yield, long propagation distance, low energy consumption, long service life and the like.
The second technical problem to be solved by the invention is to provide a method for generating hydrated air negative ions by the device.
The invention also provides the application of the device and/or the method in air purification.
The invention provides a preparation device of hydrated air anions, which comprises an air pressure balance bin, an air supply module and a water supply module, wherein the air supply module and the water supply module are respectively communicated with the air pressure balance bin, a light-activated catalytic module is arranged in the air pressure balance bin, the air pressure balance bin is used for enabling air flow provided by the air supply module to react with liquid flow provided by the water supply module to generate superfine liquid drops, and the light-activated catalytic module is used for converting the superfine liquid drops into the hydrated air anions.
In the present invention, the term "hydrated air anions" is translated from the term "hydrated negative air ions" and refers to air anions prepared by using water as an ion source, and the term "water-generated negative air ions" in the literature refers to ions with different charges, which are wrapped by water molecule clusters when the charge polarity of water drops is changed by Lenard Effect or other physical effects. Reference documents: yamada R, Yanoma S, Akaike M, et al, Water-generated Negative Air ions activated NK cell and inhibition carbon genes in micro [ J ]. Cancer Letters,2006,239(2):0-197. and H.Iwama, Negative Air ions created by water processing experimental Negative oxygen delivery and aerobic metabolism, Indor Air 14(2004)293 and 297.
According to some preferred embodiments of the apparatus of the present invention, the apparatus further comprises a mist digestion module disposed inside the gas pressure equalization chamber for absorbing large liquid droplets generated by the gas flow and the liquid flow. The mist digestion module can effectively absorb large liquid drops generated by high-speed gas flow and liquid flow, so that no visible moisture is generated on the premise of keeping high yield.
In general, those skilled in the art are aware of the definition and scope of ultra-fine droplets and large droplets, e.g., ultra-fine droplets are less than 10 microns and large droplets are greater than 10 microns in size. Tiny droplets that are invisible to the naked eye but can cause charge redistribution are referred to as ultra-fine droplets. In the charge redistribution process, the portion of the droplets with positive charges due to the non-uniform polarity distribution also contains relatively large droplets that escape uniformly due to the airflow cut, called large droplets. In some embodiments of the invention, the ultrafine droplets may have a particle size of 0.0001 microns, 0.001 microns, 0.003 microns, 0.03 microns, 0.1 microns, 1 micron, 3 microns, 5 microns, 7 microns, 9 microns, 9.9 microns, and the like. In some embodiments of the invention, the large droplets may have a particle size of 10 microns, 50 microns, 100 microns, 500 microns, 1000 microns, 5000 microns, 10000 microns, and the like.
According to some embodiments of the device of the present invention, the mist digestion module is a sponge, preferably a hard water-absorbing sponge.
According to some embodiments of the device of the present invention, the air pressure balancing chamber is provided with an air pressure balancing port and a hydrated anion discharge port, wherein the air pressure balancing port is used for regulating and controlling a transmission distance of hydrated air anions; the hydrated negative ion outlet is used for discharging hydrated air negative ions. Preferably, the caliber of the air pressure balancing port is adjustable. In the invention, the air pressure balance bin realizes the gathering and non-dispersion effects of air flow by using a partial pressure principle, thereby realizing the remote transmission of the hydrated air negative ions. The flow rate of the hydrated air negative ions can be regulated and controlled by regulating the caliber of the air pressure balancing port, and the linear long-distance transmission of the hydrated air negative ions is realized.
According to some embodiments of the device of the present invention, the air pressure balancing port and the hydrated anion discharging port are each independently provided at a side wall of the air pressure balancing chamber.
According to some embodiments of the device of the present invention, the air pressure equalizing chamber is a truncated cone-shaped container. The circular truncated cone-shaped design can enable the gas in the balance bin to naturally change the transmission direction, enable the airflow to be attached to the inner wall of the balance bin and gathered towards the air outlet, and is beneficial to improving the concentration ratio of the hydrated air negative ions, so that the sprayed hydrated air negative ions can be kept undispersed for a long time, and the survival time of the negative ions is prolonged.
In the invention, the material of the air pressure balance bin has a wide selection range, and for example, the material can be acrylic material and the like with low price.
According to some embodiments of the device of the present invention, the air supply module comprises an air supply pump and an air inlet pipe which are communicated with each other, and the air supply pump supplies air flow to enter the air pressure balance bin through the air inlet pipe. Preferably, the air supply pump and the air inlet pipe have adjustable calibers. In the invention, the air flow speed and flow can be adjusted by adjusting the power of the air supply pump, the inner diameter of the air inlet pipe and the aperture of the needle head.
According to some embodiments of the device of the present invention, the air inlet tube is sealed at a rear end thereof with a needle. The aperture of the needle can be adjusted according to actual needs, for example, the aperture of the needle can be 0.1mm-0.3 mm.
According to some preferred embodiments of the device of the present invention, the air inlet tube is made of a PVC soft rubber tube.
According to some embodiments of the device of the present invention, the gas feed pump is an air pump.
According to some embodiments of the device of the present invention, the water supply module comprises an open container, a water inlet pipe and a water outlet pipe; the open container is used for containing liquid; the water inlet pipe is used for conveying the liquid in the open container to the air pressure balance bin; the water outlet pipe is used for circulating the large liquid drops in the air pressure balance bin back to the open container. In the invention, the water supply module is arranged into the open container, the water outlet generates a local negative pressure effect under the driving of high-speed airflow, and a power system is not required to be added externally, so that water circulation can be realized, and partial energy consumption is reduced. In addition, in the invention, the quality of the liquid contained in the open container has no rated standard, and the preparation of hydrated air negative ions can be realized by using common deionized water, so that the cost of the device can be greatly reduced.
According to some embodiments of the device of the present invention, a pipe joint is disposed at an end of the water inlet pipe in the air pressure balancing chamber, and preferably, the pipe joint is made of rubber. The pipe joint can withstand long-time water vapor impact without deformation, and is favorable for saving production cost.
According to some embodiments of the device according to the invention, the aperture of the outlet opening of the inlet duct is adjustable. In the invention, the size of the air outlet aperture of the air inlet pipe can be regulated according to actual requirements, so that liquid drops with different particle sizes are generated.
According to some embodiments of the device of the present invention, the end point of the water inlet pipe and the end point of the air inlet pipe are arranged at a 90 ° vertex angle in the air pressure balance chamber. In the invention, the arrangement of 90-degree vertical angles means that the tail end of the air inlet pipe is in butt joint with the top end of the water inlet pipe at an angle of 90 degrees, so that the air flow coming out of the air inlet pipe keeps a state of cutting the external space of the water inlet pipe opening, the butt joint mode is favorable for improving the air flow efficiency, and the local low-pressure situation can be formed around the water inlet pipe opening in a relatively low-speed state.
According to some embodiments of the device of the present invention, the photocatalytic module comprises a photocatalytic material and an ultraviolet lamp.
According to some embodiments of the device of the present invention, the photocatalytic material comprises titanium dioxide and rosin. Preferably, the photo-catalytic material can be formed by melting titanium dioxide and molten rosin and then cooling. In the invention, the advantages of easy plasticity and high light transmittance of rosin are combined with the light-activated catalytic material, and the prepared light-activated catalytic material can stably play a role under the impact of high-speed airflow. The stable generation of free electrons can be realized by focusing the surface of the ultraviolet lamp with 365 nm. The light-activated catalytic material is used as a core component of the device, and has the advantages of low cost, high stability, long-term reuse and the like.
In the invention, the high-speed gas provided by the gas supply module and the liquid flow provided by the water supply module generate the lenard effect, and the charge redistribution is generated while the ultrafine liquid drops are formed, so that the tiny liquid drops are charged with negative charges, and the bigger liquid drops are charged with positive charges. The large liquid drops enter into recirculation under the action of gravity, and part of the superfine liquid drops (with negative charges) move directionally together with high-speed airflow to generate stable hydrated air negative ions; part of the superfine liquid drops are contacted with the surface of the light-activated catalytic material, and due to ultraviolet irradiation, electron transition is generated to generate a large amount of free electrons, so that hydrated air negative ions are generated.
The invention provides a method for generating hydrated air anions by the preparation device, which comprises the steps of enabling the airflow provided by the air supply module and the liquid flow provided by the water supply module to react in the air pressure balance bin to generate superfine liquid drops; the superfine liquid drops are converted into hydrated air negative ions through the light-activated catalytic module.
According to some embodiments of the method of the present invention, the flow rate of the gas stream is 5-10m/s, such as 6.21 m/s.
According to some embodiments of the method of the present invention, the ultraviolet lamp emits light at a wavelength of 365 nm.
According to some embodiments of the method of the present invention, the reaction is a lenard effect.
In a preferred embodiment of the invention, the hydrated air anions prepared consist essentially of two parts: one part is generated by high-speed gas and liquid drops through the lenard effect; one part is that the superfine liquid drops are contacted with the photocatalysis material, and free electrons generated by excitation are combined to form stable hydrated air negative ions by the irradiation of ultraviolet rays.
A third aspect of the invention provides the use of the apparatus described above and/or the method described above for air purification.
The invention has the following beneficial effects:
(1) the device has the advantages of simple structure, small occupied area, low cost, environmental friendliness, repeated use of the photocatalytic material and long service life.
(2) Compared with the air negative ion prepared by the corona discharge method, the hydrated air negative ion prepared by the device has the advantages of no generation of ozone by-products, non-toxic and environment-friendly materials, long survival time of the prepared hydrated air negative ion, higher relative stability, longer indoor space propagation distance, low equipment energy consumption and the like. The method can realize electricity without releasing a large amount of free charges under high voltageThe charge is redistributed, thereby reducing O in the preparation process3And formation of nitrogen oxides. The needed titanium dioxide can be repeatedly utilized for a long time, ions prepared based on the light-activated catalytic reaction can not cause the generation of secondary pollutants, and the titanium dioxide belongs to an environment-friendly green product.
(3) Compared with the existing method for preparing the hydrated air anions by using a water vapor method, the hydrated air anions prepared by using the device can be prepared without obvious water vapor, and simultaneously has the advantages of high yield and stable yield of the hydrated air anions. The common water-air method is used for preparing air negative ions, and the air negative ions are prepared by increasing the molecular oscillation frequency, improving the tearing efficiency of water drops and the like on the basis of the Lenard Effect principle. This results in that the prepared air anions must be included in the white mist water vapor visible to the naked eye, which causes two disadvantages: first, it affects the determination of the yield of airborne anions. The principle of identifying air negative ions in the market at present is that the concentration and the content of ions in air are measured by an indirect method by measuring the change of the air conductivity between two parallel capacitor plates, and water mist has weak conductivity and can generate deviation on the measurement of the conductivity. The method fundamentally eliminates the large liquid drops forming water mist, and directly improves the actual yield of the air negative ions. Secondly, a large amount of water mist can influence the indoor humidity balance, and the long-time water vapor method of utilizing preparation air anion can be to causing potential health risks such as rheumatism. The method can continuously prepare the hydrated air negative ions on the premise of basically maintaining the humidity balance by regulating and controlling the gas flow rate and applying the mist digestion module.
Drawings
FIG. 1 is a schematic view of an apparatus for producing hydrated air anions according to example 1 of the present invention;
FIG. 2 is a schematic view of a pneumatic balance silo of example 1 of the present invention;
FIG. 3 is a test curve of the concentration of negative ions in hydrated air at different humidities for the device of example 1 of the present invention.
Description of the reference numerals
1. Air pump 2, air inlet pipe 3 and air pressure balance bin
4. Pipe joint 5, light-activated catalytic material 6 and hard water-absorbing sponge
7. Ultraviolet lamp 8, water inlet pipe 9 and water outlet pipe
10. An open container 11, an air pressure balancing port 12 and a hydrated anion discharge port
Detailed Description
The present invention will be described in detail with reference to the following embodiments and examples. It should be understood that the embodiments and examples described herein are only for illustrating and explaining the present invention and are not to be construed as limiting the present invention.
[ example 1 ]
As shown in fig. 1, the preparation device of hydrated air anions comprises an air pressure balance bin 3, and an air supply module and a water supply module which are respectively communicated with the air pressure balance bin 3, wherein a light-activated catalytic material 5, an ultraviolet lamp 7 (the light-activated catalytic material and the ultraviolet lamp are light-activated catalytic modules) and a mist digestion module are arranged in the air pressure balance bin 3.
The air supply module comprises an air pump 1 and an air inlet pipe 2. The intake pipe 2 adopts the flexible glue pipe of PVC material, and the internal diameter is 3mm, is 0.2 mm's syringe needle at 2 tail end sealing connection apertures in intake pipe.
The water supply module comprises a water inlet pipe 8, a water outlet pipe 9 and an open container 10 (deionized water is stored in the container). In the air pressure balance bin, the end points of the water inlet pipe and the end points of the air inlet pipe are arranged at a 90-degree vertex angle. The high-speed airflow provided by the air pump forms a local negative pressure effect when flowing through the nozzle of the water inlet pipe 8, so that the deionized water in the open container 10 naturally flows out of the water inlet pipe 8 under the action of atmospheric pressure. The water outlet pipe 9 is positioned below the hard water absorption sponge 6 (mist digestion module), so that unreacted deionized water flows back to the open container 10 to form water circulation.
The light-activated catalytic material 5 comprises titanium dioxide and rosin, and the preparation method comprises the following steps: 0.5g of rosin was weighed out, heated to 90 ℃ and left in a soft state, and then the soft rosin was poured into a cylindrical mold (d 5mm, h 3mm) and kept at 90 ℃. Then 50mg of titanium dioxide was uniformly sprinkled on the top surface of the rosin, heated to 100 ℃ while maintaining, to allow the titanium dioxide and the rosin to naturally fuse for 1 hour, and then cooled to room temperature and the titanium dioxide powder which was not embedded was removed. The prepared light-excited catalytic module is fixed on the hole-digging hard water-absorbing sponge, and an ultraviolet lamp is fixed above the light-excited catalytic module, so that free electrons are continuously generated.
The fog digestion module comprises a hard water-absorbing sponge 6 which is positioned under the air inlet pipe 2 and the water inlet pipe 8 and is used for rapidly absorbing large liquid drops with positive charges, and the fact that the light-activated catalytic material 5 is only contacted with superfine liquid drops can be guaranteed, so that the yield of hydrated air negative ions is improved.
The air pressure balance bin 3 is a truncated cone-shaped container (made of acrylic material) and is provided with an air pressure balance port 11 and a hydrated anion discharge port 12. The air pressure balancing port 11 is used for regulating and controlling the transmission distance of the hydrated air negative ions, and the hydrated negative ion discharge port 12 is used for discharging the hydrated air negative ions. A schematic of the air pressure equalization chamber is shown in fig. 2.
Inside the air pressure balance bin, high-speed air flow (6.21m/s) provided by an air pump 1 reacts with liquid flow which is provided by a water supply module and naturally flows out of a water inlet pipe 8 to generate superfine liquid drops, part of the superfine liquid drops move directionally and generate hydrated air anions, part of the superfine liquid drops are in contact with a photocatalytic material 5 and are excited by irradiation of an ultraviolet lamp (the light emitting wavelength of the ultraviolet lamp is 365nm) to generate the hydrated air anions, the hydrated air anions generated inside the air pressure balance bin are discharged through a hydrated anion discharge port 12, and the propagation distance is larger than or equal to 1.5 m.
[ stability test ]
The concentration of hydrated air anions prepared by the apparatus was measured with the detection point maintained at 0.8m from the air outlet at 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% air humidity, respectively, as shown in fig. 3, with the abscissa as time and the ordinate as the concentration of hydrated air anions at different humidities.
Experimental data of the attached drawings show that hydrated air anions prepared by the device can be kept relatively stable for a long time. Unlike corona discharge process for preparing negative air ionThe free charges released by discharging are random and change in a certain concentration range, and by using the method, the constant mass production of the hydrated air negative ions can be realized as long as the gas flow rate and the air pressure balancing port are ensured to be constant in proportion. The detection point of the hydrated air negative ion prepared by the invention is kept at 0.8m away from the air outlet, the concentration of the hydrated air negative ion is detected in a long-time (not less than 0.5h) detection process, the air humidity is more than 45 percent, and the concentration of the hydrated air negative ion can be kept at 1000000/cm3And can be higher than 1500/cm within the range of 1.5m-2.3m3And the normal air quality standard is ensured to be reached.
The hydrated air negative ions prepared by the method and the air negative ions prepared by the corona discharge method have longer survival life. In the case of superoxide radicals, oxygen molecules and free electrons are weak interactions between molecular bonds and intermolecular interactions, which are the root causes of instability. O is2 -The collision with other molecules in the air can cause momentum loss and charge transfer, so that O is generated2 -The moment is in an unstable state. And hydrated air anions [ O ]2·-(H2O)nIs air negative ion surrounded by water molecule cluster, and water molecule plays a role in protecting shell to make O2 -Charge transfer is less likely to occur, making it more stable.
The service life of the device depends on the service life of the core component, namely the photocatalytic material of the optical machine. Because free electrons in the titanium dioxide are continuously transited between a conduction band and a valence band under the illumination condition, the dynamic balance is realized. The optical machine catalytic material can be used for a long time as long as the surface of the optical machine catalytic material is ensured to be complete and not polluted by external pollutants.
In conclusion, the hydrated anion preparation device can prepare high-concentration hydrated air anions, the yield of the hydrated air anions prepared by the device is extremely stable, the service life of the hydrated air anions is remarkably prolonged, and the long-distance transmission of the hydrated air anions can be realized. Moreover, the device also has the following technical advantages and characteristics: the air conditioner is simple in structure, convenient to assemble and operate, low in cost, environment-friendly due to the fact that materials are non-toxic, simple and portable in design and suitable for improving air quality of a home environment.
What has been described above is merely a preferred example of the present invention. It should be noted that other equivalent variations and modifications can be made by those skilled in the art based on the technical teaching provided by the present invention, and the protection scope of the present invention should be considered.
Claims (15)
1. The utility model provides a preparation facilities of hydrated air anion, including atmospheric pressure balance storehouse and respectively with the air feed module and the water supply module of atmospheric pressure balance storehouse intercommunication, the inside laser catalysis module that is provided with in atmospheric pressure balance storehouse, the atmospheric pressure balance storehouse is used for the air current that the air feed module provided and the liquid stream that the water supply module provided to react, produces superfine liquid drop, the laser catalysis module be used for with superfine liquid drop changes the hydrated air anion into.
2. A manufacturing apparatus as set forth in claim 1 further comprising a mist digestion module disposed inside the air pressure surge bin for absorbing large liquid droplets generated by the air flow and the liquid flow.
3. A manufacturing apparatus as set forth in claim 2 wherein said mist digestion module is a sponge.
4. The manufacturing apparatus according to any one of claims 1 to 3, wherein the air pressure equalizing chamber is provided with an air pressure equalizing port and a hydrated negative ion discharging port, wherein,
the air pressure balancing port is used for regulating and controlling the transmission distance of the hydrated air negative ions;
the hydrated negative ion outlet is used for discharging hydrated air negative ions.
5. The manufacturing apparatus according to claim 4, wherein the air pressure equalizing port and the hydrated negative ion discharging port are each independently provided at a side wall of the air pressure equalizing chamber.
6. The manufacturing apparatus of claim 4, wherein the gas pressure equalizing bin is a frustoconical container.
7. The manufacturing apparatus according to any one of claims 1 to 3, wherein the air supply module comprises an air supply pump and an air inlet pipe which are communicated with each other, and the air supply pump supplies air to enter the air pressure balance chamber through the air inlet pipe.
8. The manufacturing apparatus of claim 7, wherein the gas feed pump is an air pump.
9. The manufacturing apparatus of any one of claims 1 to 3, wherein the water supply module comprises an open container, a water inlet pipe and a water outlet pipe;
the open container is used for containing liquid;
the water inlet pipe is used for conveying the liquid in the open container to the air pressure balance bin;
the water outlet pipe is used for circulating the large liquid drops in the air pressure balance bin back to the open container.
10. The manufacturing apparatus of claim 9, wherein the end point of the water inlet pipe and the end point of the air inlet pipe are arranged at a 90 ° vertex angle in the air pressure balance chamber.
11. The manufacturing apparatus of any one of claims 1-3, wherein the photocatalytic module comprises a photocatalytic material and an ultraviolet lamp.
12. The manufacturing apparatus as set forth in claim 11 wherein said photocatalytic material comprises titanium dioxide and rosin.
13. A method for generating hydrated air anions by the preparation device of any one of claims 1 to 12, comprising the steps of enabling the air flow provided by the air supply module and the liquid flow provided by the water supply module to react in the air pressure balance chamber to generate superfine liquid drops; the superfine liquid drops are converted into hydrated air negative ions through the light-activated catalytic module.
14. The method of claim 13, wherein the flow rate of the gas stream is 5-10 m/s.
15. Use of the manufacturing device according to any one of claims 1 to 12 or the method according to claim 13 or 14 for air purification.
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| CN113606720B (en) * | 2021-07-03 | 2023-09-12 | 李晓东 | Waterfall type negative oxygen ion generator |
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| US5591334A (en) * | 1993-10-19 | 1997-01-07 | Geochto Ltd. | Apparatus for generating negative ions |
| JP6092692B2 (en) * | 2013-04-10 | 2017-03-08 | 株式会社コロナ | Mist generator |
| CN104422018B (en) * | 2013-08-22 | 2017-05-17 | 袁满雪 | Device for improving indoor air quality |
| CN105375331B (en) * | 2015-12-03 | 2017-06-06 | 杭州伊圣泰医疗科技有限公司 | A kind of high pressure draught takes the air anion generating device that hydrone clashes into impingement area |
| CN207501303U (en) * | 2017-12-04 | 2018-06-15 | 李龙宛康 | A kind of oxygen atom air cleaning unit |
| CN208186618U (en) * | 2018-04-27 | 2018-12-04 | 杭州盛大高科技机电有限公司 | A kind of negative oxygen ion generator with mixing channel |
| CN109340940A (en) * | 2018-09-17 | 2019-02-15 | 湖南中南楷思科技发展有限公司 | A kind of air cleaning system of public place |
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