CN214038809U - Indoor air purification device based on plasma and catalytic reaction - Google Patents
Indoor air purification device based on plasma and catalytic reaction Download PDFInfo
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- CN214038809U CN214038809U CN202021858389.0U CN202021858389U CN214038809U CN 214038809 U CN214038809 U CN 214038809U CN 202021858389 U CN202021858389 U CN 202021858389U CN 214038809 U CN214038809 U CN 214038809U
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Abstract
The utility model discloses an indoor air purification device based on plasma and catalytic reaction, including the box that can ventilate, the box inner wall is connected gradually fan, particle filtration module, plasma generation module, catalytic reaction module, ozone removal module by the inlet end to the end of giving vent to anger, and plasma generation module connects gradually control module, power module. The formaldehyde in the air flowing through the air duct of the purifier is effectively removed, and the defects of performance attenuation and low formaldehyde removal efficiency of long-time use of the traditional negative ion air purifier and the filter screen type air purifier are overcome. Through the utility model provides a mechanism of plasma technology processing formaldehyde gas is electron direct and formaldehyde molecule collision make it decompose and the chemical oxidation reaction part that takes place between each active group that produces and formaldehyde molecule in the electric field, and the result that obtains is harmless, can directly discharge, can not cause secondary pollution's problem.
Description
Technical Field
The utility model belongs to the technical field of air purification equipment, concretely relates to indoor air purification device based on plasma and catalytic reaction.
Background
At present, the air purifier on the market mainly adopts a filter screen type and an anion type, and the filter screen type air purifier is developed in 20 years at home, so that the technology is mature and the performance tends to be stable. However, the filter screen type air purifier adopting the 'fan + filter screen' purification mode cannot efficiently remove decoration pollutants such as formaldehyde. The filter screen type air purifier is used for removing formaldehyde through an active carbon filter screen, and harmful gases such as formaldehyde are adsorbed and collected by utilizing the pore structure of active carbon. This technique has the following problems: (1) the activated carbon filter screen can only collect harmful gases such as formaldehyde and the like, but can not eliminate the harmful gases; (2) the adsorption capacity of the activated carbon is limited, and the adsorbed formaldehyde is easily discharged back to the room to cause secondary pollution along with the saturation of the activated carbon and the rise of the temperature. Therefore, although the traditional filter screen type air purifier can adsorb certain formaldehyde, the capacity of the traditional filter screen type air purifier is limited.
The anion air purifier is a new product in recent years, and is favored by a plurality of consumers by virtue of excellent formaldehyde purification effect. The negative ion air purifier uses the air negative ions as the electron beams of the active carrier to irradiate harmful gases such as formaldehyde and the like, and can degrade the harmful substances such as formaldehyde and the like into harmless substances such as carbon dioxide, water and the like, thereby thoroughly eliminating the harm of the formaldehyde to human bodies. The application numbers are: CN201410605683.3, publication no: CN104332829A, patent name: the ecological anion machine with active air purification and pollutant collection functions adopts a plurality of technologies such as an ecological anion generation technology with an anion system and a pollutant collection system, an ecological anion generation chip technology, a nano fullerene anion releaser technology and the like to generate anions with the characteristics of high activity, long natural diffusion distance and the like, and can be started for 24 hours to remove formaldehyde for a long time and a long time. Through the inspection of the quality supervision and inspection center of national indoor environment and indoor environment-friendly products, the 24-hour removal rate of the TVOC (total volatile organic compound) pollutant in indoor air by the air purifier product manufactured by the technology can reach 81 percent.
From the aspect of formaldehyde purification effect, the effect of the anion air purifier is much better than that of a filter screen type air purifier, but the purification efficiency is still low, and the requirement of efficiently removing harmful substances in indoor air at present is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an indoor air purification device based on plasma and catalytic reaction overcomes traditional anion air purifier, filter screen formula air purifier and uses performance decay, formaldehyde and get rid of the defect of inefficiency for a long time.
The utility model discloses the technical scheme who adopts is, an indoor air purification device based on plasma and catalytic reaction, including the box that can ventilate, the box inner wall is connected gradually by the inlet end to the end of giving vent to anger and is pressed fan, particle filtration module, plasma generation module, catalytic reaction module, ozone and get rid of the module, and plasma generation module connects gradually control module, power module.
The utility model discloses a characteristics still lie in:
the plasma generation module comprises an insulating plate, a plasma channel is formed in the insulating plate, two opposite side faces of the insulating plate are respectively connected with a positive plate and a negative plate, the positive plate and the negative plate are identical in structure, and electrode holes which are identical in size with the insulating plate along the plasma channel are formed.
The thickness of the insulating plate along the direction of the plasma channel is 2-10 mm.
The catalytic reaction module is a panel structure with a plurality of carrier holes uniformly arranged on the surface, and 90-100 μm formaldehyde catalytic reactant is attached to the surface of the panel structure by a steam condensation method.
The formaldehyde catalytic reactant is TiO2Or MnO2。
The distance between the plasma generation module and the catalytic reaction module is 1-5 mm.
The ozone removing module is an activated carbon layer with the thickness of 5-20 cm.
The side wall of the box body is provided with a plurality of clamping grooves, and the particle filtering module, the plasma generating module and the catalytic reaction module are connected to the box body through the clamping grooves; the air compressing fan is connected with the box body through a screw, and the ozone removing module is connected with the box body through a screw.
The power module comprises an alternating current commercial power supply connected with commercial power, the output end of the alternating current commercial power supply is connected with a switch, the output end of the switch is respectively connected with the input end of an alternating current sine high-voltage generator and the input end of a conversion power supply, the output end of the alternating current sine high-voltage generator is connected with the anode of the plasma generation module, the output end of the conversion power supply is connected with a high-voltage nanosecond pulse power supply, the output end of the high-voltage nanosecond pulse power supply is connected with the cathode of the plasma generation module, and the alternating current commercial power supply is connected with an air compressing fan.
The control module comprises a timing control panel and an indicator lamp working panel which are sequentially connected with the switching power supply.
The utility model relates to an indoor air purification device based on plasma and catalytic reaction beneficial effect is:
the utility model relates to a technique and device based on plasma purifies room air, it combines strong oxidation active particle (ozone), high-efficient catalytic reaction to get rid of the module through granule filtration module, plasma generation module, catalytic reaction module, ozone and is in the same place, effectively gets rid of the formaldehyde in the air that flows through the clarifier wind channel, overcomes traditional anion air purifier, the long-time performance attenuation of using of filter-screen formula air purifier, the defect that the efficiency is low is got rid of to formaldehyde.
Through the utility model provides a mechanism of plasma technology processing formaldehyde gas is electron direct and formaldehyde molecule collision make it decompose and the chemical oxidation reaction part that takes place between each active group that produces and formaldehyde molecule in the electric field, and the result that obtains is harmless, can directly discharge, can not cause secondary pollution's problem.
Drawings
Fig. 1 is a schematic structural diagram of an indoor air purification device based on plasma and catalytic reaction of the present invention;
fig. 2 is a schematic diagram of the structure of the middle power module of the present invention.
In the figure, 1, an alternating current commercial power supply, 2, a switch, 3, an alternating current sine high voltage generator, 4, a conversion power supply, 5, a timing control board, 6, an indicator lamp working panel, 7, a high-voltage nanosecond pulse power supply, 8, a plasma generating module, 9, a gas compressing fan, 10, a particle filtering module, 11, a box body, 12, a catalytic reaction module and 13, an ozone removing module are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses an indoor air purification device based on plasma and catalytic reaction, as shown in fig. 1, including the box 11 that can ventilate, 11 inner walls of box connect gradually by the inlet end to the end of giving vent to anger and calm anger fan 9, particle filtration module 10, plasma generation module 8, catalytic reaction module 12, ozone and get rid of module 13, and plasma generation module 8 connects gradually control module, power module.
The plasma generation module 8 comprises an insulating plate, a plasma channel is formed in the insulating plate, two opposite side faces of the insulating plate are respectively connected with a positive plate and a negative plate, the positive plate and the negative plate are identical in structure, and electrode holes which are identical in size with the insulating plate along the plasma channel are formed.
The thickness of the insulating plate along the direction of the plasma channel is 2-10 mm.
The catalytic reaction module 12 is a panel structure with a plurality of carrier holes uniformly formed on the surface, and 90-100 μm formaldehyde catalytic reactant is attached to the surface of the panel structure by a steam condensation method.
The formaldehyde catalytic reactant is TiO2Or MnO2。
The distance between the plasma generation module 8 and the catalytic reaction module 12 is 1-5 mm.
The ozone removal module 13 is an activated carbon layer having a thickness of 5-20 cm.
The side wall of the box body 11 is provided with a plurality of clamping grooves, and the particle filtering module 10, the plasma generating module 8 and the catalytic reaction module 12 are connected to the box body 11 through the clamping grooves; the air compressing fan 9 is connected with the box body 11 through screws, and the ozone removing module 13 is connected with the box body 11 through screws.
As shown in fig. 2, the power module includes an ac mains supply 1 connected to the mains supply, an output end of the ac mains supply 1 is connected to a switch 2, an output end of the switch 2 is respectively connected to an input end of an ac sinusoidal high voltage generator 3 and an input end of a switching power supply 4, an output end of the ac sinusoidal high voltage generator 3 is connected to a positive electrode of a plasma generation module 8, an output end of the switching power supply 4 is connected to a high-voltage nanosecond pulse power supply 7, an output end of the high-voltage nanosecond pulse power supply 7 is connected to a negative electrode of the plasma generation module 8, and the ac mains supply 1 is connected to a compressor fan 9.
The control module comprises a timing control board 5 and an indicator lamp working panel 6 which are sequentially connected with a conversion power supply 4.
The utility model relates to an effect of each part among indoor air purification device based on plasma and catalytic reaction is as follows:
the plasma excitation module 8 comprises two positive and negative electrode plates with the same structure, rectangular or other holes with the width of 2-10mm and the length of 30-200 mm are arranged in the plates, the positive electrode plates and the negative electrode plates are parallel, a plasma channel is formed between the positive electrode plates and the negative electrode plates, and a uniform plasma area can be formed in the whole plate. The distance between the positive plate and the negative plate is determined by 8-2 insulating plates and excitation voltage, the value range of the excitation voltage is 3-15kV, and the value range of the distance between the two plates is 2-10 mm. High-energy radicals, high-energy free electrons, ozone, formaldehyde and other harmful substances are uniformly distributed in the plasma excitation module 8 and can be fully oxidized and decomposed when passing through the module 8, so that the effect of purifying air is achieved.
Compressed air fan 9 can absorb indoor contaminated air, and the air efficient that will include the toxic gas is impressed inside the clarifier, improves the work efficiency of clarifier.
The main function of the particle filter module 10 is to filter dust particles in the air, and has two main functions: (1) filtering dust particles in the air, and primarily purifying the air; (2) dust particles in the filtered air are prevented from being enriched on a discharge electrode plate of the plasma excitation module to influence the discharge efficiency.
The catalytic reaction module 12 is catalyzed by plasma discharge, and TiO on the surface of the catalytic reaction module2Or MnO2And other catalysts which can remove formaldehyde and ozone through catalytic reaction, further efficiently remove formaldehyde, preliminarily remove ozone and avoid secondary pollution generated by ozone.
The ozone removing module 13 can efficiently remove ozone, and in order to facilitate replacement of activated carbon and reduction of wind resistance, the vent holes formed in the plate of the ozone removing module 13 are large, and the specific size is a rectangle with a width of 10mm-30mm and a length of 50mm-300mm or other holes capable of achieving the same effect. The distance between adjacent holes is 2-20mm, and the holes are uniformly distributed on the whole plate. And the ozone removing module is an activated carbon layer with the thickness of 5-20 cm.
The utility model relates to an indoor air purification device based on plasma and catalytic reaction, the pulse-exchange combination formula nanosecond pulse discharge production method that provides a low-voltage, low-power and low electromagnetic interference, its implementation includes the following step:
the alternating current commercial power supply 1 is switched on, and the equipment is electrified; the switch 2 is closed, and the output signal of the alternating current commercial power supply 1 enters the alternating current sine high-voltage generator 3 and the conversion power supply 4 through the switch 2; the voltage signal output by the switch 2 enters the alternating current high voltage generator 3 and is converted into a high voltage alternating current signal; after a 5V voltage signal output by the conversion power supply 4 enters a micro nanosecond pulse signal generator 7, the voltage signal is rectified into a nanosecond pulse signal; after the nanosecond pulse signal output by the micro nanosecond pulse signal generator 7 reaches a negative plate of the plasma module 8 and the high-voltage alternating current signal output by the alternating current high-voltage generator 3 reaches a positive plate of the plasma module 8, high-voltage electric fields generated by the two plates are superposed to reach a plasma ionization threshold value, so that nanosecond pulse discharge is initiated; the overall discharge intensity and frequency of the dielectric barrier discharge can be controlled by phase modulating the output voltage amplitude, frequency and duty cycle of the nanosecond pulse signal generator 7 and the alternating current sine high voltage generator 3.
The utility model provides a technique and device based on plasma purifies room air, is including the box 14 that can ventilate, 14 inner walls of box connect gradually by the inlet end to the end of giving vent to anger and compress air fan 9, particle filtration module 10, plasma generation module 8, catalytic reaction module 12, ozone and get rid of module 13, compress air fan 9, plasma generation module 8 all connects power module. The plasma generation module 8 is characterized in that rectangular holes with the width of 10mm and the length of 150mm are formed in the positive plate and the negative plate, the upper side and the lower side of each hole are respectively in transition by a semicircle with the diameter of 10mm, the holes are uniformly distributed in the positive plate and the negative plate, the distance between adjacent holes is 5mm, the positive plate and the negative plate are made of 7075 aluminum alloy, the positive plate and the negative plate are placed in parallel, and a plasma channel is formed between the positive plate and the negative plate; the middle insulating plate is 5mm thick, the excitation voltage applied by the plasma generation module is 5kV, and the ozone removal module 13 is an activated carbon layer with the thickness of 15 cm.
According to a GB/T18801_2015 detection method, the device is placed in an experimental space with the space of 30 cubic meters, sampling is carried out before the device operates, sampling is carried out after the device operates for 60min, and the formaldehyde removal rate is 90.50% after the device operates for 60min according to a calculation method that the concentration obtained by subtracting the concentration obtained by the second sampling from the first sampling is divided by the initial concentration and multiplied by 100.
In this way, the utility model relates to a technique and device based on plasma purifies room air takes place module, catalytic reaction module, ozone through granule filtration module, plasma and gets rid of the module and combine strong oxidation active particle (ozone), high-efficient catalytic reaction together, effectively gets rid of the formaldehyde in the air that flows through the clarifier wind channel, overcomes the performance decay that traditional negative ion air purifier, filter screen formula air purifier used for a long time, the defect that the inefficiency is got rid of to formaldehyde.
Through the utility model provides a mechanism of plasma technology processing formaldehyde gas is electron direct and formaldehyde molecule collision make it decompose and the chemical oxidation reaction part that takes place between each active group that produces and formaldehyde molecule in the electric field, and the result that obtains is harmless, can directly discharge, can not cause secondary pollution's problem.
Claims (10)
1. The utility model provides an indoor air purification device based on plasma and catalytic reaction, its characterized in that, is including box (11) that can ventilate, box (11) inner wall is connected gradually by the inlet end to the end of giving vent to anger and is pressed fan (9), particle filtration module (10), plasma generation module (8), catalytic reaction module (12), ozone and gets rid of module (13), plasma generation module (8) connect gradually control module, power module.
2. An indoor air purification apparatus based on plasma and catalytic reaction as claimed in claim 1, wherein the plasma generation module (8) comprises an insulating plate, the insulating plate is provided with a plasma channel, two opposite sides of the insulating plate are respectively connected with a positive plate and a negative plate, the positive plate and the negative plate are identical in structure and provided with electrode holes with the same size as the insulating plate along the plasma channel.
3. A plasma and catalytic reaction based indoor air cleaning apparatus according to claim 2, wherein the thickness of the insulating plate in the plasma channel direction is 2-10 mm.
4. An indoor air purification device based on plasma and catalytic reaction as claimed in claim 1, wherein the catalytic reaction module (12) is a panel structure with a plurality of carrier holes uniformly opened on the surface, and 90-100 μm formaldehyde catalytic reactant is attached to the surface of the panel structure by a vapor condensation method.
5. The indoor air purification device based on plasma and catalytic reaction as claimed in claim 4, wherein the formaldehyde catalytic reactant is TiO2Or MnO2。
6. An indoor air purification apparatus based on plasma and catalytic reaction as claimed in claim 1, wherein the distance between the plasma generation module (8) and the catalytic reaction module (12) is 1-5 mm.
7. An indoor air purification apparatus based on plasma and catalytic reaction as claimed in claim 1, wherein the ozone removing module (13) is an activated carbon layer with thickness of 5-20 cm.
8. The indoor air purification device based on the plasma and the catalytic reaction as claimed in claim 1, wherein a plurality of clamping grooves are formed in the side wall of the box body (11), and the particle filtering module (10), the plasma generating module (8) and the catalytic reaction module (12) are connected to the box body (11) through the clamping grooves; compressed air fan (9) pass through screw connection box (11), ozone is got rid of module (13) and is passed through screw connection box (11).
9. The indoor air purification device based on plasma and catalytic reaction of claim 1, characterized in that, the power module is including the alternating current mains supply (1) of connecting the commercial power, alternating current mains supply (1) output connects switch (2), alternating current sinusoidal high voltage generator (3) input and switching power supply (4) input are connected respectively to switch (2) output, the positive pole of plasma generation module (8) is connected to alternating current sinusoidal high voltage generator (3) output, high-pressure nanosecond pulse power supply (7) is connected to switching power supply (4) output, the negative pole of plasma generation module (8) is connected to the output of high-pressure nanosecond pulse power supply (7), alternating current mains supply (1) is connected with compressor fan (9).
10. An indoor air purification device based on plasma and catalytic reaction as claimed in claim 9, wherein the control module comprises a timing control board (5) and an indicator lamp working panel (6) which are connected with the conversion power supply (4) in sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021858389.0U CN214038809U (en) | 2020-08-31 | 2020-08-31 | Indoor air purification device based on plasma and catalytic reaction |
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| CN202021858389.0U CN214038809U (en) | 2020-08-31 | 2020-08-31 | Indoor air purification device based on plasma and catalytic reaction |
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| CN214038809U true CN214038809U (en) | 2021-08-24 |
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