CN100355459C - Static reinforced nano photocatalytic air disinfection and clarification device - Google Patents
Static reinforced nano photocatalytic air disinfection and clarification device Download PDFInfo
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- CN100355459C CN100355459C CNB2006100427500A CN200610042750A CN100355459C CN 100355459 C CN100355459 C CN 100355459C CN B2006100427500 A CNB2006100427500 A CN B2006100427500A CN 200610042750 A CN200610042750 A CN 200610042750A CN 100355459 C CN100355459 C CN 100355459C
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Abstract
The present invention relates to a nanometer photocatalysis device for air sterilization and purification by static reinforcement, which is characterized in that the outer side of a shell body is provided with a direct current high voltage supply source; one side of an air inlet inside the shell body is provided with a coarse screen; the lower part of the coarse screen is provided with a corona electrode connected with the negative pole of the direct current high voltage supply source through line conductors; the lower part of the corona electrode is provided with a dust collection electrode which is connected with the positive pole of the direct current high voltage supply source and earthed through the line conductors; the lower part of the dust collection electrode in the shell body is provided with one grade photocatalysis assemblies at least, wherein the photocatalysis assemblies comprise a photocatalysis three-dimensional screen connected with the positive pole of the direct current high voltage supply source and earthed, a negative pole screen installed on both sides of the three-dimensional screen and connected with the negative pole of the direct current high voltage supply source, and at least two ultraviolet lamps installed between the three-dimensional screen and the negative pole screen. The present invention has the advantages of simple structure, small wind resistance, high purification speed, high purification efficiency, easy cleaning, convenient maintenance, no secondary pollution, etc., can form an independently used air purification device with fans, and can also be directly used for air purification in central air conditioner pipes.
Description
Technical field
The invention belongs to disinfectant device technique field, be specifically related to the sterilization and the deodorization of air.
Background technology
The hazardness of room air pollution is known together by the whole society.Nano-photo catalytic is considered to one of the most promising air purifying process with the characteristic of its a series of excellences.But the problem that still has two aspects at present: one, in use light induced electron one hole is compound very easily naturally for the nano-photocatalyst that now can make, and causes its photocatalysis quantum efficiency very low; They are two years old, from application characteristic, photocatalysis is a kind of typical surface-catalyzed reactions, loaded nano photocatalyst especially for air cleaning, often need be made into definite shape, have only pollutant fully to contact its excellent catalysis characteristics of competence exertion closely with the loaded nano photocatalyst of definite shape.The solution of first problem depends on the research and development of new high-activity photocatalyst, or takes physics or chemical method effectively to separate light induced electron one hole in application to existing photocatalyst, and it is compound to reduce nature, improves its quantum efficiency.Second problem is to manage in application to make that pollutant are as much as possible contacts with photocatalyst, obviously will address this problem from the structure of purifier and the design of process for purifying flow process.
Adopting the collaborative purification efficiency that improves nano-photocatalyst of the many field energys of physics (electric field, magnetic field, microwave, low-temperature plasma and ultrasonic field etc.), is one of important content of present nanometer photocatalytic air purifying technical research.Electrostatic precipitation or non-thermal plasma trap combined with nano-photo catalytic be used for air cleaning and adopted by multiple product and patent.As Chinese invention patent ZL.03132002, ZL.03100288, ZL.98810034 electrostatic precipitation is combined with nano-photo catalytic and to be used for air cleaning, its basic skills is the use of simply contacting of electrostatic precipitation district and photocatalysis net or cellular carrier of photocatalyst.Although the efficiency of dust collection of these purifiers is improved, and the usefulness of photocatalysis part is not given full play to, because it is to the flow velocity catalytic purification of pollutant in the air-flow faster, only limit to " passive collision " and be adsorbed in the small amounts of contamination on the photocatalysis net, and its purification efficiency is subjected to the low obvious restriction of photocatalyst " quantum efficiency ", and particularly the purification efficiency to gaseous contaminant is still very low.Therefore this only is a kind of pro forma combination.
Application number is 200410009507,200510011748,200510066535 patent application, non-thermal plasma trap combined with nano-photo catalytic be used for air cleaning, be characterized in loaded with nano photocatalyst on dust collecting electrode, with the high energy electron and the direct exposure light catalyst of ultraviolet of corona discharge generation, to produce the synergistic purification effect of photocatalysis and low-temperature plasma.This method is beginning to have certain effect, but increase along with running time, the photocatalyst surface that is carried on dust collecting electrode can very fast deposition one deck dust, the pollutant of follow-up collection can't effectively be contacted, even photocatalyst loses purification rapidly with photocatalyst.In order to improve purification efficiency, if with the said structure plural serial stage, certainly lead to a large amount of ozone again, cause it should not be used for indoor air purification.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming of above-mentioned patent, provide a kind of reasonable in design, simple in structure, purification speed is fast, efficient is high, non-secondary pollution, can significantly strengthen the static reinforced nano photocatalytic air disinfection and clarification device of nanometer photocatalytic purification usefulness.
The technical solution adopted for the present invention to solve the technical problems is: be outside equipped with high-voltage DC power supply at housing, be provided with coarse strainer in intravital inlet end one side of shell, the coarse strainer downstream is provided with the corona discharge electrode that is connected with the DC high-voltage power supply negative pole by lead in housing, the corona discharge electrode downstream is provided with by lead and is connected with the DC high-voltage power supply positive pole and the dust collecting electrode of ground connection in housing, the dust collecting electrode downstream is provided with the one-level photocatalysis assembly that is connected with high-voltage DC power supply by lead at least in housing, this photocatalysis assembly comprise one with the anodal also photocatalysis three dimensional network of ground connection that links to each other of high-voltage DC power supply, be arranged on the negative pole net that links to each other with the high-voltage DC power supply negative pole of photocatalysis three dimensional network both sides, be arranged at least two uviol lamps between photocatalysis three dimensional network and the negative pole net.
Photocatalysis three dimensional network of the present invention is a porosity more than or equal to 95%, thickness is the nano-TiO of 5mm or 6mm or 10mm
2The photocatalysis nickel foam.
Negative pole net of the present invention is 20～25 purpose stainless steel cloths.
Corona discharge electrode of the present invention is that diameter is that nichrome wire line electrode or the thickness of 0.1～0.2mm is 0.1～0.5mm zigzag stainless steel electrode.
Dust collecting electrode of the present invention is a porosity more than or equal to 90%, thickness is the foam metal of 3mm or 5mm.
Above-mentioned foam metal is nickel foam or foam rustless steel or foam copper.
Dust collecting electrode of the present invention be shaped as U-shaped structure or the E shape structure that joins end to end and connect.
The ultraviolet wavelength that uviol lamp of the present invention sent is 365nm or 254nm.
Distance between photocatalysis three dimensional network of the present invention and the side negative pole net equates with distance between the opposite side negative pole net with this photocatalysis three dimensional network.
The present invention adopts behind coarse strainer, for providing DC voltage between corona discharge electrode and dust collecting electrode, the high energy electron of corona discharge electrode discharge generation, ultraviolet light and ozone remove extremely to the viral pathogenic bacteria that enters the interpolar viral pathogenic bacteria of corona discharge electrode and control of dust and be collected on the dust collecting electrode by high-voltage DC power supply.Control of dust of the present invention is the U-shaped and the E shape structure of metal three dimensional network formation very, this structure integrate electrostatic precipitation and electro static filtering function, its efficiency of dust collection is significantly improved, and the long-acting performance for rearmounted photocatalysis three dimensional network light catalytic purifying ability provides assurance.DC high-voltage power supply has effectively suppressed the natural simple composite in light induced electron one hole on the photocatalysis three dimensional network at the electric field of setting up between photocatalysis three dimensional network and the negative pole net, and make photohole more move to photocatalysis three dimensional network surface, guaranteed that it has very high photocatalysis quantum efficiency, promptly has the ability of very strong purifying air pollution thing.The electro static filtering ability of connecting the anodal photocatalysis three dimensional network of high-voltage DC power supply simultaneously significantly improves, and can purify passing the efficient capture of the bigger parvovirus pathogenic bacteria granule of upstream dust collecting electrode kinetic energy and killing to remove.Each parts of the present invention adopt the board plug type structure, are easy to clean, are convenient to safeguard.That the present invention has is simple in structure, windage is little, purification speed is fast, purification efficiency is high, be easy to clean, be convenient to safeguard, do not produce advantage such as secondary pollution.The present invention can constitute the independent air cleaner that uses with blower fan, also can be directly used in the air cleaning of central air-conditioning pipeline.
Description of drawings
The structural representation of Fig. 1 embodiment of the invention 1.
Fig. 2 is the structural representation of dust collecting electrode 4 among the embodiment 4～10.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Embodiment 1
In Fig. 1,2, the static reinforced nano photocatalytic air disinfection and clarification device of present embodiment by housing 1, coarse strainer 2, corona discharge electrode 3, dust collecting electrode 4, one-level before behind the negative pole net 5, uviol lamp 6, one-level photocatalysis three dimensional network 7, one-level behind negative pole net 8, secondary light catalysis three dimensional network 9, the secondary negative pole net 10, high-voltage DC power supply 11 connect and constitute.
Be placed with high-voltage DC power supply 11 outside housing 1, high-voltage DC power supply 11 is for the invention provides DC voltage, and the voltage span of high-voltage DC power supply 11 is 4～10KV.Inlet end housing 1 inwall in housing 1 is inserted with coarse strainer 2, and coarse strainer 2 is commercially available air-conditioning filter nets, and air to be clean enters from the air inlet of housing 1, removes thicker particulate pollutant in the air to be clean by coarse strainer 2 earlier.The downstream of coarse strainer 2 is equipped with corona discharge electrode 3 in housing 1, and the corona discharge electrode 3 of present embodiment is the nichrome wire line electrode of diameter 0.15mm, and corona discharge electrode 3 is connected by the negative pole of lead with high-voltage DC power supply 11.The downstream of corona discharge electrode 3 is inserted housing 1 inwall dust collecting electrode 4 is installed in housing 1, dust collecting electrode 4 is connected with the positive pole of high-voltage DC power supply 11 and ground connection by lead, dust collecting electrode 4 be shaped as the U-shaped three dimensional network that mutual head and the tail are connected as a single entity, the U-shaped three dimensional network is a nickel foam, the porosity of nickel foam more than or equal to 90%, thickness is 3mm.When the contaminated air after filtering through coarse strainer 2 passed through corona discharge electrode 3, the particulate contaminants in the air-flow was at first by charged, and immediately by the dust collecting electrode 4 efficient absorption in downstream with filter.High energy electron, ultraviolet light and the ozone of corona discharge electrode 3 discharge generation removes extremely to the viral pathogenic bacteria that enters the viral pathogenic bacteria between corona discharge electrode 3 and the dust collecting electrode 4 and be collected on the dust collecting electrode 4.Negative pole net 5 is 20 purpose stainless steel cloths before the negative pole net 5 before downstream housing 1 inwall of dust collecting electrode 4 is inserted with one-level in housing 1, one-level, and negative pole net 5 is connected by the negative pole of lead with high-voltage DC power supply 11 before the one-level.The downstream of negative pole net 5 is inserted housing 1 inwall one-level photocatalysis three dimensional network 7 is installed before the one-level in housing 1, and one-level photocatalysis three dimensional network 7 is porositys more than or equal to 95%, thickness is the nano-TiO of 6mm
2The photocatalysis nickel foam.One-level photocatalysis three dimensional network 7 links to each other with the positive pole of high-voltage DC power supply 11 and ground connection by lead.Negative pole net 8 after the downstream of one-level photocatalysis three dimensional network 7 insertion housing 1 inwall is inserted with one-level in housing 1, negative pole net 8 is connected by the negative pole of lead with high-voltage DC power supply 11 after the one-level, after the one-level distance of negative pole net 8 and one-level photocatalysis three dimensional network 7 with one-level before negative pole net 5 equate with the distance of one-level photocatalysis three dimensional network 7, after the one-level before the structure of negative pole net 8 and the one-level structure of negative pole net 5 identical.Before one-level, between negative pole net 5 and the one-level photocatalysis three dimensional network 7 two uviol lamps 6 are installed, two uviol lamps 6 are installed between the negative pole net 8 after one-level photocatalysis three dimensional network 7 and the one-level, the ultraviolet wavelength that uviol lamp 6 is sent is 365nm, and ultraviolet is a nano-TiO on the photocatalysis three dimensional network
2Photocatalyst provides exciting light.Before the one-level after negative pole net 5, one-level photocatalysis three dimensional network 7, the one-level negative pole net 8, four uviol lamps 6 constitute one-level photocatalysis assemblies.After negative pole net 8 is connected with high-voltage DC power supply 11 after negative pole net 5 and the one-level before one-level photocatalysis three dimensional network 7, the one-level, before one-level photocatalysis three dimensional network 7 and one-level between the negative pole net 5, and one-level after set up electric field, the nano-TiO on the one-level photocatalysis three dimensional network 7 between the negative pole net 8
2Photocatalyst produces light induced electron-hole down ultraviolet the exciting that uviol lamp 6 sent, before one-level photocatalysis three dimensional network 7 and one-level negative pole net 5, and one-level after between the negative pole net 8 under the effect of electric field force, light induced electron-hole is fully effectively separated, one-level photocatalysis three dimensional network 7 ground connection, prevented the electron accumulation on it, and make photohole more move to one-level photocatalysis three dimensional network 7 surfaces, make nano-TiO on the one-level photocatalysis three dimensional network 7
2Photocatalyst has very high photocatalysis quantum efficiency, because one-level photocatalysis three dimensional network 7 specific surfaces are very big, therefore can adsorb fully and capture airborne gaseous contaminant and the bigger parvovirus pathogenic bacteria granule of kinetic energy that passes upstream dust collecting electrode 4, and carry out quick decomposing, purifying and remove extremely.The ozone of 7 pairs of corona discharge electrodes of one-level photocatalysis three dimensional network, 3 generations simultaneously can adsorb effectively, and the ozone of one-level photocatalysis three dimensional network 7 absorption also can suppress nano-TiO on it
2The natural simple composite in the light induced electron-hole of photocatalyst under ultraviolet excitation had both strengthened the light catalytic purifying usefulness of one-level photocatalysis three dimensional network 7, prevented that again it from producing secondary pollution.The downstream of negative pole net 8 is inserted housing 1 inwall secondary light catalysis three dimensional network 9 is installed after the one-level in housing 1, and the structure of the structure of secondary light catalysis three dimensional network 9 and one-level photocatalysis three dimensional network 7 is identical.Negative pole net 8 is simultaneously as negative pole net before the secondary after the one-level.Negative pole net 10 after the downstream of secondary light catalysis three dimensional network 9 insertion housing 1 inwall is equipped with secondary in housing 1, behind the secondary after the structure of negative pole net 10 and the one-level structure of negative pole net 8 identical, behind the secondary distance of negative pole net 10 and secondary light catalysis three dimensional network 9 with one-level after negative pole net 8 equate with the distance of secondary light catalysis three dimensional network 9.Negative pole net 10 is identical with the annexation and the one-level photocatalysis assembly of high-voltage DC power supply 11 behind secondary light catalysis three dimensional network 9, the secondary.Between negative pole net 8 and the secondary light catalysis three dimensional network 9 two uviol lamps 6 are installed after the one-level, between the negative level net two uviol lamps 6 are installed behind secondary light catalysis three dimensional network 9 and the secondary, the ultraviolet wavelength that uviol lamp 6 is sent is 365nm, and ultraviolet is a nano-TiO on the secondary light catalysis three dimensional network 9
2Photocatalyst provides exciting light.After the one-level behind negative pole net 8, secondary light catalysis three dimensional network 9, the secondary negative pole net 10, four uviol lamps 6 constitute the secondary light catalytic modules.The secondary light catalytic module is identical with one-level photocatalysis assembly to air-polluting cleaning principle, and the secondary light catalytic module carries out further efficient capture absorption and kill to remove purifying to the air pollutants of passing through one-level photocatalysis assembly.
Embodiment 2
In the present embodiment, corona discharge electrode 3 is that diameter is the nichrome wire line electrode of 0.1mm.Dust collecting electrode 4 is porositys more than or equal to 90%, thickness is the foam copper of 3mm, dust collecting electrode 4 be shaped as the U-shaped structure that mutual head and the tail are connected as a single entity.The photocatalysis three dimensional network is a porosity more than or equal to 95%, thickness is the nano-TiO of 5mm
2The photocatalysis nickel foam.The ultraviolet wavelength that uviol lamp 6 is sent is 254nm.The connecting relation of other parts and parts is identical with embodiment 1.
Embodiment 3
In the present embodiment, corona discharge electrode 3 is that diameter is the nichrome wire line electrode of 0.2mm, before the one-level after negative pole net 5, the one-level behind negative pole net 8, the secondary negative pole net 10 be 25 purpose stainless steel cloths.Dust collecting electrode 4 is porositys more than or equal to 90%, thickness is the foam rustless steel of 5mm, dust collecting electrode 4 be shaped as the U-shaped structure that mutual head and the tail are connected as a single entity.The photocatalysis three dimensional network is a porosity more than or equal to 95%, thickness is the nano-TiO of 10mm
2The photocatalysis nickel foam.The connecting relation of other parts and parts is identical with embodiment 1.
Embodiment 4
In above embodiment 1～3, corona discharge electrode 3 is that thickness is 0.3mm rustless steel zigzag electrode, dust collecting electrode 4 be shaped as the E shape structure that joins end to end and connect, the used material of dust collecting electrode 4 is identical with respective embodiments.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 5
In above embodiment 1～3, corona discharge electrode 3 is that thickness is 0.1mm rustless steel zigzag electrode, dust collecting electrode 4 be shaped as the E shape structure that joins end to end and connect, the used material of dust collecting electrode 4 is identical with respective embodiments.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 6
In above embodiment 1～3, corona discharge electrode 3 is that thickness is 0.5mm rustless steel zigzag electrode, dust collecting electrode 4 be shaped as the E shape structure that joins end to end and connect, the used material of dust collecting electrode 4 is identical with respective embodiments.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 7
In above embodiment 1～3, dust collecting electrode 4 be shaped as the E shape structure that joins end to end and connect.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 8
Dust collecting electrode 4 in above embodiment 4～6 be shaped as the U-shaped structure that joins end to end and connect, the used material of dust collecting electrode 4 is identical with respective embodiments.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 9
In above embodiment 1～8, the downstream of dust collecting electrode 4 is equipped with one-level photocatalysis assembly in housing 1, negative pole net 8 after negative pole net 5 before the photocatalysis three dimensional network, one-level, the one-level promptly is installed, between photocatalysis three dimensional network and two negative pole nets, three uviol lamps 6 is installed respectively.The connecting relation of other parts and parts is identical with respective embodiments.
Embodiment 10
In above embodiment 1～8, the downstream of dust collecting electrode 4 is equipped with level Four photocatalysis optical assembly in housing 1, and four photocatalysis three dimensional networks, five negative pole nets promptly are installed, and between a photocatalysis three dimensional network and an adjacent negative pole net four uviol lamps 6 is installed.The connecting relation of other parts and parts is identical with respective embodiments.
Also can design the static reinforced nano photocatalytic air disinfection and clarification device of another concrete structure according to above-mentioned principle; the progression of photocatalysis assembly should carry out specifically determining according to the size of housing 1 and the flow that is purified air and the pollution level that is cleaned air in the housing 1, but all within protection scope of the present invention.
Claims (9)
1, a kind of static reinforced nano photocatalytic air disinfection and clarification device, it is characterized in that: be outside equipped with high-voltage DC power supply (11) at housing (1), inlet end one side in housing (1) is provided with coarse strainer (2), coarse strainer (2) downstream is provided with the corona discharge electrode (3) that is connected with the DC high-voltage power supply negative pole by lead in housing (1), corona discharge electrode (3) downstream is provided with by lead and is connected with the DC high-voltage power supply positive pole and the dust collecting electrode (4) of ground connection in housing (1), dust collecting electrode (4) downstream is provided with the one-level photocatalysis assembly that is connected with high-voltage DC power supply (11) by lead at least in housing (1), this photocatalysis assembly comprise one with the anodal also photocatalysis three dimensional network of ground connection that links to each other of high-voltage DC power supply (11), be arranged on the negative pole net that links to each other with high-voltage DC power supply (11) negative pole of photocatalysis three dimensional network both sides, be arranged at least two uviol lamps (6) between photocatalysis three dimensional network and the negative pole net.
2, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: said photocatalysis three dimensional network is a porosity more than or equal to 95%, thickness is the nano-TiO of 5mm or 6mm or 10mm
2The photocatalysis nickel foam.
3, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: said negative pole net is 20～25 purpose stainless steel cloths.
4, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: said corona discharge electrode (3) is that diameter is that nichrome wire line electrode or the thickness of 0.1～0.2mm is 0.1～0.5mm zigzag stainless steel electrode.
5, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: said dust collecting electrode (4) is a porosity more than or equal to 90%, thickness is the foam metal of 3mm or 5mm.
6, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 5, it is characterized in that: said foam metal is nickel foam or foam rustless steel or foam copper.
7, according to claim 1 or 5 or 6 described static reinforced nano photocatalytic air disinfection and clarification devices, it is characterized in that: said dust collecting electrode (4) be shaped as U-shaped structure or the E shape structure that joins end to end and connect.
8, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: the ultraviolet wavelength that said uviol lamp (6) is sent is 365nm or 254nm.
9, according to the described static reinforced nano photocatalytic air disinfection and clarification device of claim 1, it is characterized in that: the distance between said photocatalysis three dimensional network and the side negative pole net equates with distance between the opposite side negative pole net with this photocatalysis three dimensional network.
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| CNB2006100427500A CN100355459C (en) | 2006-04-28 | 2006-04-28 | Static reinforced nano photocatalytic air disinfection and clarification device |
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| CNB2006100427500A CN100355459C (en) | 2006-04-28 | 2006-04-28 | Static reinforced nano photocatalytic air disinfection and clarification device |
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| CN1843514A CN1843514A (en) | 2006-10-11 |
| CN100355459C true CN100355459C (en) | 2007-12-19 |
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Families Citing this family (10)
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| CN101280943B (en) * | 2008-04-22 | 2010-06-02 | 浙江大学 | Apparatus for long-acting purifying indoor air combined pollution |
| CN106765538A (en) * | 2015-11-20 | 2017-05-31 | 张家铭 | Metal solvent sterilization device |
| CN106731418A (en) * | 2017-02-04 | 2017-05-31 | 北京利希顿科技有限责任公司 | A kind of clarifier |
| CN106975351B (en) * | 2017-04-28 | 2023-09-08 | 深圳市力德诺华科技有限公司 | Air purification device based on electrostatic dust collection technology and photocatalysis technology |
| CN107413132B (en) * | 2017-08-28 | 2023-08-04 | 清华大学 | Air filter based on metal foam |
| CN109882878B (en) * | 2018-04-14 | 2020-04-28 | 青岛科技大学 | Intelligent flue gas waste heat utilization and flue gas pollutant treatment system thereof |
| CN111854004A (en) * | 2020-08-21 | 2020-10-30 | 孟金来 | Device for removing microorganisms in air by static electricity |
| CN112169582A (en) * | 2020-09-09 | 2021-01-05 | 中国船舶重工集团公司第七一八研究所 | High-voltage electric-assisted photocatalytic purification device with sterilization and odor purification functions |
| CN112156647A (en) * | 2020-09-09 | 2021-01-01 | 中国船舶重工集团公司第七一八研究所 | High-voltage auxiliary photocatalytic purification module, purification device and method |
| CN115111697B (en) * | 2022-06-10 | 2023-06-16 | 中物院成都科学技术发展中心 | Photoelectric coupling module, air purifying device and method |
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