CN106152361A - A kind of large scale business air exchanger and automatic control system thereof - Google Patents

Abstract

The invention discloses a large-scale commercial air switch and its automatic control system, comprising an air inlet device, an air inlet device driving motor, an outdoor air detector, an inspection door, an air purification box, an air outlet grid, and an air outlet grid driving motor , indoor air detector and controller; the outdoor air enters the air purification box through the air inlet device, and after being filtered by the air purification box filter device, clean air is obtained, and flows into the room through the air outlet grille. The large-scale commercial air exchanger described in the present invention has a simple structure and a high degree of intelligence, adopts a polymer filter device, and has a good effect on air purification.

Description

A Large Commercial Air Exchanger and Its Automatic Control System

technical field

The invention belongs to the field of air purification, and in particular relates to an automatic control working process of a large-scale commercial air exchanger.

Background technique

With the continuous improvement of people's living standards, a large number of decoration materials, furniture and daily chemicals have entered the room, making the sources and types of pollutants in large shopping malls, industrial plants, large theaters, hospitals, stadiums, etc. more and more . At the same time, in order to save energy, the airtightness of modern buildings is continuously strengthened, which makes the fresh air volume of large shopping malls, industrial plants, large theaters, hospitals, stadiums, etc. insufficient. , stadiums and other air pollution.

At present, there are two problems when air purifiers on the market remove indoor harmful gases through closed loops such as large shopping malls, industrial plants, large theaters, hospitals, and stadiums. One is that the purification speed is slow, and the other is that fresh air cannot be introduced. When the fresh air system with air purification function encounters poor outdoor air quality, the air discharged into large shopping malls, industrial plants, large theaters, hospitals, stadiums, etc. after a single purification through the fresh air system still cannot meet the national standard. There is no guarantee that fresh air will be introduced and clean air will be obtained at the same time.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a large-scale commercial air exchanger, comprising: an air inlet device 1, an air inlet device driving motor 2, an outdoor air detector 3, an inspection door 4, an air purification box 5, and an air outlet grille 6. The air outlet grid drive motor 7, the indoor air detector 8, and the controller 9; the air inlet device 1 is a circular channel, and the air inlet device 1 is arranged on the front surface of the air purification box 5, and the air inlet device 1 Connected with the air purification box 5, the air inlet device 1 is composed of a fan and a protective cover, wherein the fan is composed of three fan blades connected coaxially, and the protective cover is braided with stainless steel wire; the drive motor 2 of the air inlet device is located at The front end of the side of the air purification box 5, the drive motor 2 of the air intake device is connected with the drive of the air intake device 1; the front end of the bottom of the air purification box 5 is provided with an outdoor air detector 3; At the top, the maintenance door 4 is fixedly connected with the air purification box 5 through bolts; the rear surface of the air purification box 5 is provided with an air outlet grid 6, and the air outlet grid 6 is composed of 8 to 12 grid blades; The air outlet grid drive motor 7 is located at the rear end of the other side of the air purification box body 5, and the air outlet grid drive motor 7 is driven and connected with the air outlet grid 6; the indoor air detector 8 is arranged at the bottom rear end of the air purification box body 5; The controller 9 is a touch liquid crystal display screen, and the controller 9 is fixed on a wall 1.5m to 1.6m away from the ground;

The drive motor 2 of the air inlet device, the outdoor air detector 3 , the drive motor 7 of the air outlet grid and the indoor air detector 8 are controlled and connected to the controller 9 through wires respectively.

Further, the air purification box 5 includes: a cleaning brush 5-1, a primary filter layer 5-2, a harmful gas adsorption layer 5-3, and a secondary filter layer 5-4; wherein the primary filter layer 5 -2 is located at the front end of the air purification box 5, and the primary filter layer 5-2 is between 20cm and 30cm away from the air inlet device 1; the cleaning brush 5-1 performs horizontal reciprocating motion on the surface of the primary filter layer 5-2 , two cleaning brushes 5-1 are arranged in the air purification box body 5; the secondary filter layer 5-4 is located at the inner rear end of the air purification box body 5, and the distance between the secondary filter layer 5-4 and the air outlet grid 6 is 30cm Between ~40cm, the secondary filter layer 5-4 is a HEPA high-efficiency clean filter; a harmful gas adsorption layer 5-3 is provided between the primary filter layer 5-2 and the secondary filter layer 5-4.

Further, the cleaning brush 5-1 includes: a driving motor 5-1-1, a telescopic rod 5-1-2, a moving rod 5-1-3, and a cleaning brush head 5-1-4; wherein the driving motor 5-1-1 is fixedly connected to the surface of the inner side wall of the air purification box 5, and the drive motor 5-1-1 is driven and connected to one end of the telescopic rod 5-1-2. The telescopic range of the telescopic rod 5-1-2 is Between 25cm and 40cm; the other end of the telescopic rod 5-1-2 is fixedly connected to the moving rod 5-1-3, and the material of the moving rod 5-1-3 is stainless steel; the moving rod 5-1- 3 The other end is fixedly connected with a cleaning brush head 5-1-4, which is a detachable structure, and a large number of bristles are attached to the cleaning brush head 5-1-4, wherein the material of the bristles is PVC material;

The drive motor 5-1-1 is controlled and connected with the controller 9 through wires.

Further, the primary filter layer 5-2 includes: large particle dust filter 5-2-1, micro particle dust filter 5-2-2, high efficiency sterilization filter 5-2-3, dust concentration detection Inductor 5-2-4; wherein the large-particle dust filter 5-2-1 is made of polyester fiber, and the thickness of the large-particle dust filter 5-2-1 is between 3mm and 5mm; the tiny The particle dust filter screen 5-2-2 is located at the rear of the large particle dust filter screen 5-2-1, and the material of the micro particle dust filter screen 5-2-2 is glass fiber material; the high-efficiency sterilization filter screen 5-2-3 The surface is sprayed with sterilizing agent; the dust concentration detection sensor 5-2-4 is arranged at the lower end of the frame of the large particle dust filter screen 5-2-1, and the dust concentration detection sensor 5-2-4 and the controller 9 are connected through wires Control connections.

Further, the harmful gas adsorption layer 5-3 includes: harmful substance degrading bacteria secretion capsule 5-3-1, activated carbon plate 5-3-2; wherein the activated carbon plate 5-3-2 is made of mineral raw material activated carbon , the surface of the activated carbon plate 5-3-2 is attached with a large number of secretion vesicles 5-3-1 of harmful substance degrading bacteria, and the number of the secretion vesicles 5-3-1 of harmful substance degrading bacteria is not less than 8000.

Further, the high-efficiency sterilization filter 5-2-3 is formed by compression molding of polymer materials, and the composition and manufacturing process of the high-efficiency sterilization filter 5-2-3 are as follows:

1. Composition of high-efficiency sterilization filter 5-2-3:

In parts by weight, 42-114 parts of 4-isopropyl-2-propenyltoluene, 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid-3, 18-52 parts of 4,5,6-tetrahydropeptidimidomethyl ester, 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenyl 86-154 parts of oxazolin-5-one, (R,S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dichlorovinyl)-2 , 38-104 parts of 2-dimethylcyclopropanecarboxylate, (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methyl 98-208 parts of butyrate, 145-208 parts of α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropane carboxylate 308 parts of 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3-phenoxy-benzyl ester 24 ～63 parts, (1R)-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropanecarboxylic acid-3-phenoxybenzyl ester 36～88 parts , 114-196 parts of 1-aminocyclopropane-1-carboxylic acid, 38-64 parts of cross-linking agent, 78-134 parts of 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino) -2-[(2,4-Dinitrophenyl)azo]phenyl]-acetamide 52～105 parts, N-[5-[di(2-acetoxy)ethyl]amino]-2 -[(2-Chloro-4-nitrophenyl)azo]phenylpropanamide 33~81 parts, N-[2-[(2-bromo-4,6-dinitrophenyl)azo] - 47-103 parts of 5-[(2-cyanoethyl)amino]-4-methoxyphenyl]-acetamide;

The cross-linking agent is 2-hydroxyl-N-methylacetanilide, N-oxydiethylene-2-benzothiazole sulfenamide, diacetoacetyl-2-chloro-5-methyl-p-phenylenediamine any of the

2. The manufacturing process of high-efficiency sterilization filter screen 5-2-3 includes the following steps:

Step 1: Add 998 to 1354 parts of ultrapure water with a conductivity of 1.28μS/cm to 3.22μS/cm into the reactor, start the stirrer in the reactor at a speed of 45rpm to 96rpm, start the heating pump, and make the reactor The internal temperature rises to 52 ° C ~ 86 ° C; sequentially add 4-isopropyl-2-propenyl toluene, 2,2-dimethyl-3-(2-methyl-1-propenyl) cyclopropanecarboxylic acid- 3,4,5,6-tetrahydropeptidimidomethyl ester, 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenylazole Lin-5-one, stir until completely dissolved, adjust the pH value to 2.5-7.2, adjust the speed of the agitator to 114rpm-254rpm, the temperature is 76°C-156°C, and the esterification reaction is 14-32 hours;

Step 2: Take the (R,S)-α-cyano-3-phenoxybenzyl(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethyl ring Propane carboxylate, (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate were pulverized, and the particle size of the powder was 1100～3200 mesh; add α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-diylmethylcyclopropane carboxylate and mix evenly, spread out In the tray, the tile thickness is 12mm-26mm, and the dose is 2.8kGy-8.5kGy, the energy is 3.2MeV-12MeV α-ray irradiation for 45-105 minutes, and the same dose of β-ray irradiation for 86-104 minutes;

Step 3: The mixed powder treated in step 2 is dissolved in 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3-phenoxy -Benzyl ester, add to the reaction kettle, the stirrer speed is 72rpm~142rpm, the temperature is 45℃~158℃, start the vacuum pump to make the vacuum degree of the reaction kettle reach -1.78MPa~0.32MPa, keep this state for 16~24 hours ; Decompress and feed radon gas, make the pressure in the reactor be 0.54MPa～0.98MPa, keep the heat preservation and stand still for 12～25 hours; The stirring speed is raised to 254rpm～302rpm, and the reactor is depressurized to 0MPa simultaneously; Add (1R )-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropanecarboxylate-3-phenoxybenzyl ester, 1-aminocyclopropane-1-carboxylate After the acid is completely dissolved, add a cross-linking agent and stir to mix, so that the hydrophilic-lipophilic balance value of the reaction kettle solution is 6.2-7.6, and keep the temperature for 11-25 hours;

Step 4: Add 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino)-2-[(2,4-dinitro Phenyl)azo]phenyl]-acetamide, N-[5-[bis(2-acetoxy)ethyl]amino]-2-[(2-chloro-4-nitrophenyl)azo ]phenylpropanamide and N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)amino]-4-methoxybenzene Base]-acetamide, increase the pressure of the reactor to 1.2MPa～2.4MPa, the temperature is 167℃～254℃, and the polymerization reaction takes 14～24 hours; °C to 40 °C, discharge the material, and put it into a compression molding machine to produce a high-efficiency sterilization filter 5-2-3.

Further, the present invention also discloses an automatic control working process of a large-scale commercial air exchanger, and the method includes the following steps:

Step 1: switch on the power supply, the outdoor air detector 3 and the indoor air detector 8 respectively feed back the detected outdoor air pollution concentration and indoor air pollution concentration to the controller 9 in the form of electrical signals, and at the same time, the controller 9 Calculate the outdoor AQI value and indoor AQI value respectively through the calculation unit;

Step 2: By calculating the comparison unit, the controller 9 compares and calculates the outdoor AQI value and the indoor AQI value; when the indoor AQI value is higher than the outdoor AQI value, the controller 9 first starts the air intake device to drive the motor 2 to make the air The device 1 ventilates the air purification box 5 at a wind speed of 3m/s-5m/s. After 5min-8min, the controller 9 controls the drive motor 7 of the air outlet grid to start, so that the purified air flows into the air outlet grid 6. Indoor; when the indoor AQI value is level one, the controller 9 closes the drive motor 2 of the air inlet device and the drive motor 7 of the air outlet grille, and ends the ventilation;

Step 3: During the air purification process, the outdoor dirty air enters the air purification box 5 through the air inlet device 1, and firstly filters the outdoor dirty air through the primary filter layer 5-2, in which the large particle dust filter 5-2-1 mainly absorbs large particles of dust such as animal dander and plant catkins in the air, and the micro particle dust filter 5-2-2 mainly filters inhalable particles, pollen and other dust with a particle size of less than 10 microns in the air treatment, the high-efficiency sterilization filter 5-2-3 performs preliminary adsorption on the peculiar smells such as lampblack and cigarettes in the air, and removes a part of bacteria in the air; The harmful gases such as oil fume and formaldehyde remaining in the air are effectively decomposed and adsorbed, and then the HEPA high-efficiency clean filter in the secondary filter layer 5-4 effectively filters the dust with a particle size of 0.3 microns in the air to obtain clean air. , and finally the clean air flows into the room through the air outlet grid 6;

Step 4: When the first-stage filter layer 5-2 is performing primary filter, when the dust concentration detection sensor 5-2-4 detects that the dust concentration on the large particle dust filter screen 5-2-1 is greater than 80ppm, the dust concentration The detection sensor 5-2-4 sends the feedback signal to the controller 9, and the controller 9 starts the drive motor 5-1-1 on the cleaning brush 5-1, drives the expansion rod 5-1-2 to expand and contract, thereby driving the movement The rod 5-1-3 reciprocates horizontally, and the cleaning brush head 5-1-4 cleans the dust attached to the large particle dust filter screen 5-2-1; the cleaning brush head 5-1-4 is regularly disassembled and cleaned.

A kind of large commercial air exchanger disclosed by the present invention has the advantages of:

(1) The device is simple in structure and easy to operate;

(2) The device has a high degree of intelligence and has a good effect on air purification;

(3) The device can realize indoor and outdoor air exchange and improve indoor air quality.

The large-scale commercial air exchanger described in the present invention has a simple structure and a high degree of intelligence, adopts a polymer filter device, and has a good effect on air purification.

Description of drawings

Fig. 1 is a structural diagram of a large commercial air exchanger described in the present invention.

Fig. 2 is a schematic diagram of the internal structure of the air purification box described in the present invention.

Fig. 3 is a schematic structural view of the cleaning brush described in the present invention.

Fig. 4 is a schematic diagram of the structure of the primary filter layer described in the present invention.

Fig. 5 is a schematic diagram of the structure of the harmful gas adsorption layer described in the present invention.

Fig. 6 is a diagram showing the variation of the corrosion resistance of the high-efficiency sterilization filter material according to the present invention with the use time.

Fig. 7 is a circuit diagram of a large commercial air exchanger described in the present invention.

In above Fig. 1～Fig. 5, air inlet device 1, air inlet device driving motor 2, outdoor air detector 3, inspection door 4, air purification cabinet 5, cleaning brush 5-1, driving motor 5-1-1, Telescopic rod 5-1-2, moving rod 5-1-3, cleaning brush head 5-1-4, primary filter layer 5-2, large particle dust filter screen 5-2-1, micro particle dust filter screen 5 -2-2, high-efficiency sterilization filter 5-2-3, dust concentration detection sensor 5-2-4, harmful gas adsorption layer 5-3, harmful substance degrading bacteria secretion capsule 5-3-1, activated carbon plate 5 -3-2, secondary filter layer 5-4, air outlet grid 6, air outlet grid drive motor 7, indoor air detector 8, controller 9.

detailed description

A large-scale commercial air exchanger provided by the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a structural diagram of a large-scale commercial air exchanger described in the present invention. As seen from Figure 1, it includes: an air inlet device 1, an air inlet device drive motor 2, an outdoor air detector 3, Inspection door 4, air purification box 5, air outlet grid 6, air outlet grid drive motor 7, indoor air detector 8, controller 9; the air inlet device 1 is a circular channel, and the air inlet device 1 is arranged on On the front surface of the air purification box 5, the air intake device 1 is connected through the air purification box 5. The air intake device 1 is composed of a fan and a protective cover, wherein the fan is composed of three fan blades connected coaxially, and the protective cover has stainless steel wires It is braided; the drive motor 2 of the air intake device is located at the front end of the side of the air purification box 5, and the drive motor 2 of the air intake device is connected with the drive connection of the air intake device 1; the front end of the bottom of the air purification box 5 is provided with an outdoor air detector 3. The inspection door 4 is located at the top of the air purification box 5, and the inspection door 4 is fixedly connected with the air purification box 5 through bolts; the rear surface of the air purification box 5 is provided with an air outlet grid 6, and the air outlet The grid 6 is composed of 8 to 12 grid blades; the air outlet grid driving motor 7 is located at the rear end of the other side of the air purification box 5, and the air outlet grid driving motor 7 is drivingly connected to the air outlet grid 6; the indoor air detection The device 8 is arranged at the bottom rear end of the air purification box 5; the controller 9 is a touch liquid crystal display screen, and the controller 9 is fixed on a wall 1.5m to 1.6m away from the ground;

The drive motor 2 of the air inlet device, the outdoor air detector 3 , the drive motor 7 of the air outlet grid and the indoor air detector 8 are controlled and connected to the controller 9 through wires respectively.

As shown in Figure 2, it is a schematic diagram of the internal structure of the air purification box described in the present invention. As can be seen from Figure 2 or Figure 1, the air purification box 5 includes: a cleaning brush 5-1, a primary filter layer 5- 2. Harmful gas adsorption layer 5-3, secondary filter layer 5-4; wherein the primary filter layer 5-2 is located at the front end of the air purification box 5, and the primary filter layer 5-2 is at a distance from the air inlet device 1 between 20cm and 30cm; the cleaning brush 5-1 performs horizontal reciprocating motion on the surface of the primary filter layer 5-2, and two cleaning brushes 5-1 are arranged in the air purification box 5; the secondary filter layer 5 -4 is located at the inner rear end of the air purification box 5, the distance between the secondary filter layer 5-4 and the air outlet grid 6 is between 30cm～40cm, and the secondary filter layer 5-4 is a HEPA high-efficiency clean filter screen; the primary filter A harmful gas adsorption layer 5-3 is provided between the layer 5-2 and the secondary filter layer 5-4.

As shown in Figure 3, it is a schematic structural view of the cleaning brush described in the present invention, as seen from Figure 3 or Figure 1, the cleaning brush 5-1 includes: a drive motor 5-1-1, a telescopic rod 5-1-2 , moving rod 5-1-3, cleaning brush head 5-1-4; wherein said driving motor 5-1-1 is fixedly connected to the surface of the inner side wall of the air purification box 5, and the driving motor 5-1-1 is connected with the telescopic One end of the rod 5-1-2 is driven and connected, and the telescopic range of the telescopic rod 5-1-2 is between 25cm and 40cm; the other end of the telescopic rod 5-1-2 is fixedly connected with the moving rod 5-1-3 , the material of the moving rod 5-1-3 is stainless steel; the other end of the moving rod 5-1-3 is fixedly connected with a cleaning brush head 5-1-4, and the cleaning brush head 5-1-4 is a detachable structure , a large number of bristles are attached to the cleaning brush head 5-1-4, wherein the material of the bristles is PVC material;

The drive motor 5-1-1 is controlled and connected with the controller 9 through wires.

As shown in Figure 4, it is a schematic view of the primary filter layer structure described in the present invention, as seen from Figure 4 or Figure 1, the primary filter layer 5-2 includes: large particle dust filter screen 5-2-1, Micro particle dust filter screen 5-2-2, high-efficiency sterilization filter screen 5-2-3, dust concentration detection sensor 5-2-4; wherein said large particle dust filter screen 5-2-1 is made of polyester fiber The thickness of the large particle dust filter 5-2-1 is between 3 mm and 5 mm; the tiny particle dust filter 5-2-2 is located behind the large particle dust filter 5-2-1, and the fine particle dust The filter screen 5-2-2 is made of glass fiber material; the surface of the high-efficiency sterilization filter screen 5-2-3 is sprayed with a sterilizing agent; the dust concentration detection sensor 5-2-4 is set in the large particle dust filter The lower end of the frame of the net 5-2-1, the dust concentration detection sensor 5-2-4 is connected with the controller 9 through wire control.

As shown in Figure 5, it is a schematic diagram of the structure of the harmful gas adsorption layer described in the present invention. As can be seen from Figure 5, the harmful gas adsorption layer 5-3 includes: harmful substance degrading bacteria secretion capsule 5-3-1, activated carbon plate 5-3-2; wherein the raw material of the activated carbon plate 5-3-2 is mineral raw material activated carbon, and the surface of the activated carbon plate 5-3-2 is attached with a large number of harmful substance-degrading bacteria secretion vesicles 5-3-1, and the harmful substance The number of secretory vesicles 5-3-1 of degrading bacteria is not less than 8000.

The automatic control work process of a kind of large commercial air exchanger of the present invention is:

Step 1: switch on the power supply, the outdoor air detector 3 and the indoor air detector 8 respectively feed back the detected outdoor air pollution concentration and indoor air pollution concentration to the controller 9 in the form of electrical signals, and at the same time, the controller 9 Calculate the outdoor AQI value and indoor AQI value respectively through the calculation unit;

Step 2: By calculating the comparison unit, the controller 9 compares and calculates the outdoor AQI value and the indoor AQI value; when the indoor AQI value is higher than the outdoor AQI value, the controller 9 first starts the air intake device to drive the motor 2 to make the air The device 1 ventilates the air purification box 5 at a wind speed of 3m/s-5m/s. After 5min-8min, the controller 9 controls the drive motor 7 of the air outlet grid to start, so that the purified air flows into the air outlet grid 6. Indoor; when the indoor AQI value is level one, the controller 9 closes the drive motor 2 of the air inlet device and the drive motor 7 of the air outlet grille, and ends the ventilation;

Step 3: During the air purification process, the outdoor dirty air enters the air purification box 5 through the air inlet device 1, and firstly filters the outdoor dirty air through the primary filter layer 5-2, in which the large particle dust filter 5-2-1 mainly absorbs large particles of dust such as animal dander and plant catkins in the air, and the micro particle dust filter 5-2-2 mainly filters inhalable particles, pollen and other dust with a particle size of less than 10 microns in the air treatment, the high-efficiency sterilization filter 5-2-3 performs preliminary adsorption on the peculiar smells such as lampblack and cigarettes in the air, and removes a part of bacteria in the air; The harmful gases such as oil fume and formaldehyde remaining in the air are effectively decomposed and adsorbed, and then the HEPA high-efficiency clean filter in the secondary filter layer 5-4 effectively filters the dust with a particle size of 0.3 microns in the air to obtain clean air. , and finally the clean air flows into the room through the air outlet grid 6;

Step 4: When the first-stage filter layer 5-2 is performing primary filter, when the dust concentration detection sensor 5-2-4 detects that the dust concentration on the large particle dust filter screen 5-2-1 is greater than 80ppm, the dust concentration The detection sensor 5-2-4 sends the feedback signal to the controller 9, and the controller 9 starts the drive motor 5-1-1 on the cleaning brush 5-1, drives the expansion rod 5-1-2 to expand and contract, thereby driving the movement The rod 5-1-3 reciprocates horizontally, and the cleaning brush head 5-1-4 cleans the dust attached to the large particle dust filter screen 5-2-1; the cleaning brush head 5-1-4 is regularly disassembled and cleaned.

The large-scale commercial air exchanger described in the present invention has a simple structure and a high degree of intelligence, adopts a polymer filter device, and has a good effect on air purification.

The following are examples of the manufacturing process of the high-efficiency sterilization filter 5-2-3 of the present invention. The examples are to further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and essence of the present invention, the modifications and substitutions made to the methods, steps or conditions of the present invention all belong to the scope of the present invention.

Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

Example 1

Manufacture the high-efficiency sterilization filter screen 5-2-3 of the present invention according to the following steps, and in parts by weight:

Step 1: Add 998 parts of ultrapure water with a conductivity of 1.28μS/cm into the reactor, start the stirrer in the reactor at a speed of 45rpm, start the heating pump, and increase the temperature in the reactor to 52°C; add in sequence 42 parts of 4-isopropyl-2-propenyltoluene, 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid-3,4,5,6-tetrahydro 18 parts of peptidimidomethyl ester, 86 parts of 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenyloxazolin-5-one, Stir until completely dissolved, adjust the pH value to 2.5, adjust the stirrer speed to 114rpm, the temperature is 76°C, and the esterification reaction takes 14 hours;

Step 2: Take the (R,S)-α-cyano-3-phenoxybenzyl(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethyl ring 38 parts of propane carboxylate, 98 parts of (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate were pulverized, The particle size of the powder is 1100 mesh; add 145 parts of α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2 dimethylcyclopropane carboxylate and mix Spread evenly in the tray with a tile thickness of 12mm, irradiate with α-rays with a dose of 2.8kGy and an energy of 3.2MeV for 45 minutes, and irradiate with the same dose of β-rays for 86 minutes;

Step 3: The mixed powder treated in step 2 is dissolved in 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3 at a concentration of 52ppm 24 parts of -phenoxy-benzyl ester were added to the reaction kettle, the stirrer speed was 72rpm, the temperature was 45°C, the vacuum pump was started to make the vacuum degree of the reaction kettle reach -1.78MPa, and the reaction was kept in this state for 16 hours; the pressure was released and Radon gas was introduced to make the pressure in the reactor 0.54MPa, and the temperature was kept for 12 hours; the speed of the agitator was raised to 254rpm, and the pressure of the reactor was released to 0MPa; (1R)-trans-2,2-dimethyl 36 parts of base-3-(2-methyl-1-propenyl)-cyclopropanecarboxylic acid-3-phenoxybenzyl ester, 114 parts of 1-aminocyclopropane-1-carboxylic acid were completely dissolved, and then added 38 parts of joint agent were stirred and mixed, so that the hydrophilic-lipophilic equilibrium value of the reactor solution was 6.2, and the heat preservation was allowed to stand for 11 hours;

Step 4: When the stirring speed is 124rpm, add 78 parts of 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino)-2-[(2,4-dinitro 52 parts of phenyl)azo]phenyl]-acetamide, N-[5-[bis(2-acetoxy)ethyl]amino]-2-[(2-chloro-4-nitrophenyl) 33 parts of azo]phenylpropanamide, N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)amino]-4- 47 parts of methoxyphenyl]-acetamide, increase the pressure of the reactor to 1.2MPa, the temperature is 167°C, and the polymerization reaction is 14 hours; after the reaction is completed, the pressure in the reactor is reduced to 0MPa, and the temperature is lowered to 32°C. The material is discharged and put into the compression molding machine to produce a high-efficiency sterilization filter 5-2-3;

The crosslinking agent is 2-hydroxy-N-methylacetanilide.

Example 2

Manufacture the high-efficiency sterilization filter screen 5-2-3 of the present invention according to the following steps, and in parts by weight:

Step 1: Add 1125 parts of ultrapure water with a conductivity of 2.12μS/cm into the reactor, start the stirrer in the reactor at a speed of 70rpm, start the heating pump, and raise the temperature in the reactor to 68°C; add in order 78 parts of 4-isopropyl-2-propenyltoluene, 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid-3,4,5,6-tetrahydro 36 parts of peptidimidomethyl ester, 124 parts of 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenyloxazolin-5-one, Stir until completely dissolved, adjust the pH value to 5.6, adjust the speed of the agitator to 185rpm, the temperature is 114°C, and the esterification reaction takes 21 hours;

Step 2: Take the (R,S)-α-cyano-3-phenoxybenzyl(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethyl ring 78 parts of propane carboxylate, 162 parts of (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate were pulverized, The particle size of the powder is 2000 mesh; add 235 parts of α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2 dimethyl cyclopropane carboxylate and mix Spread evenly in the tray with a tile thickness of 19mm, irradiate with α-rays with a dose of 5.8kGy and an energy of 7.5MeV for 75 minutes, and irradiate with the same dose of β-rays for 100 minutes;

Step 3: The mixed powder treated in step 2 is dissolved in 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3 at a concentration of 70ppm Add 44 parts of -phenoxy-benzyl ester to the reaction kettle, the stirrer speed is 109rpm, the temperature is 100°C, start the vacuum pump to make the vacuum degree of the reaction kettle reach -0.96MPa, keep this state for 20 hours; release the pressure and Introduce radon gas to make the pressure in the reactor 0.72MPa, keep the temperature for 19 hours; increase the speed of the agitator to 280rpm, and release the pressure of the reactor to 0MPa; add (1R)-trans-2,2-dimethyl 62 parts of base-3-(2-methyl-1-propenyl)-cyclopropanecarboxylic acid-3-phenoxybenzyl ester, 155 parts of 1-aminocyclopropane-1-carboxylic acid were completely dissolved, and then added 51 parts of joint agent were stirred and mixed, so that the hydrophilic-lipophilic equilibrium value of the reactor solution was 6.8, and the insulation was left to stand for 18 hours;

Step 4: When the stirrer rotates at 154rpm, add 118 parts of 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino)-2-[(2,4-dinitrobenzene Base) azo] phenyl] - 78 parts of acetamide, N-[5-[bis(2-acetoxy) ethyl] amino] -2-[(2-chloro-4-nitrophenyl) Nitrogen] 54 parts of phenylpropanamide, N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)amino]-4-methyl 81 parts of oxyphenyl]-acetamide, increase the pressure of the reactor to make it reach 1.8MPa, the temperature is 214°C, and the polymerization reaction takes 19 hours; The material can be put into the compression molding machine to make a high-efficiency sterilization filter 5-2-3;

The crosslinking agent is diacetoacetyl-2-chloro-5-methyl-p-phenylenediamine.

Example 3

Manufacture the high-efficiency sterilization filter screen 5-2-3 of the present invention according to the following steps, and in parts by weight:

Step 1: Add 1354 parts of ultrapure water with a conductivity of 3.22μS/cm into the reactor, start the stirrer in the reactor at a speed of 96rpm, start the heating pump, and increase the temperature in the reactor to 86°C; add in sequence 114 parts of 4-isopropyl-2-propenyltoluene, 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid-3,4,5,6-tetrahydro 52 parts of peptidimidomethyl ester, 154 parts of 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenyloxazolin-5-one, Stir until completely dissolved, adjust the pH value to 7.2, adjust the speed of the agitator to 254rpm, the temperature is 156°C, and the esterification reaction is 32 hours;

Step 2: Take the (R,S)-α-cyano-3-phenoxybenzyl(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethyl ring 104 parts of propane carboxylate, 208 parts of (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate were pulverized, The particle size of the powder is 3200 mesh; add 308 parts of α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2 dimethyl cyclopropane carboxylate and mix Spread evenly in the tray with a tile thickness of 26mm, irradiate with α-rays with a dose of 8.5kGy and an energy of 12MeV for 105 minutes, and irradiate with the same dose of β-rays for 104 minutes;

Step 3: The mixed powder treated in step 2 is dissolved in 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3 at a concentration of 86ppm -Phenoxy-benzyl ester 63 parts, add to the reaction kettle, the stirrer speed is 142rpm, the temperature is 158°C, start the vacuum pump to make the vacuum degree of the reaction kettle reach 0.32MPa, keep this state for 24 hours; release the pressure and pass Enter radon gas to make the pressure in the reactor be 0.98MPa, and keep the heat preservation for 25 hours; the speed of the stirrer is increased to 302rpm, and the reactor is depressurized to 0MPa; (1R)-trans-2,2-dimethyl - 88 parts of 3-(2-methyl-1-propenyl)-cyclopropanecarboxylic acid-3-phenoxybenzyl ester, 196 parts of 1-aminocyclopropane-1-carboxylic acid are completely dissolved, add cross-linking 64 parts of the agent were stirred and mixed, so that the hydrophilic-lipophilic equilibrium value of the reactor solution was 7.6, and the heat preservation was left to stand for 25 hours;

Step 4: When the stirring speed is 184rpm, add 134 parts of 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino)-2-[(2,4-dinitro 105 parts of phenyl)azo]phenyl]-acetamide, N-[5-[bis(2-acetoxy)ethyl]amino]-2-[(2-chloro-4-nitrophenyl) 81 parts of azo]phenylpropanamide, N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)amino]-4- 103 parts of methoxyphenyl]-acetamide, increase the pressure of the reactor to 2.4MPa, the temperature is 254°C, and the polymerization reaction is 24 hours; after the reaction is completed, the pressure in the reactor is reduced to 0MPa, and the temperature is lowered to 40°C. The material is discharged and put into the compression molding machine to produce a high-efficiency sterilization filter 5-2-3;

The crosslinking agent is N-oxydiethylene-2-benzothiazole sulfenamide.

Comparative example

The control example is a commercially available high-efficiency sterilization filter of a certain brand.

Example 4

The high-efficiency sterilization filter 5-2-3 prepared in Examples 1-3 was compared with the high-efficiency sterilization filter described in the comparative example. The corrosion resistance, purification rate, attachment rate of harmful substance-degrading bacteria and material sealing degree of the two were counted, and the results are shown in Table 1.

As can be seen from Table 1, the high-efficiency sterilization filter screen 5-2-3 of the present invention, its corrosion resistance, purification rate, harmful substances

The indicators such as the attachment rate of degrading bacteria and the sealing degree of the material are all better than the products produced by the prior art.

In addition, as shown in Figure 6, it is the statistics of the corrosion resistance of the material of the high-efficiency sterilization filter 5-2-3 according to the present invention changing with the use time. It can be seen from the figure that the high-efficiency sterilization filter screen 5-2-3 used in Examples 1 to 3 has a material corrosion resistance that changes with use time by a large margin than existing products.

As shown in Figure 7, it is a circuit diagram of a large-scale commercial air exchanger described in the present invention. As can be seen in the figure, a large-scale commercial air exchange control system has advanced performance.

Claims (7)

1. A large-scale commercial air exchanger, comprising: an air intake device (1), an air intake device drive motor (2), an outdoor air detector (3), an inspection door (4), an air purification box (5), Air outlet grille (6), outlet grille drive motor (7), indoor air detector (8), controller (9); It is characterized in that, described air inlet device (1) is a circular channel, and air inlet The device (1) is arranged on the front surface of the air purification box (5), and the air inlet device (1) is connected through the air purification box (5). The air inlet device (1) is composed of a fan and a protective cover, wherein the fan consists of Three fan blades are coaxially connected, and the protective cover is braided with stainless steel wire; the drive motor (2) of the air intake device is located at the front end of the side of the air purification box (5), and the drive motor (2) of the air intake device is connected to the air intake The device (1) is driven and connected; the front end of the bottom of the air purification box (5) is provided with an outdoor air detector (3); the inspection door (4) is located at the top of the air purification box (5), and the inspection door (4) It is fixedly connected with the air purification box (5) by bolts; the rear surface of the air purification box (5) is provided with an air outlet grid (6), and the air outlet grid (6) is composed of 8 to 12 grid blades The air outlet grid driving motor (7) is located at the rear end of the other side of the air purification box (5), and the air outlet grid driving motor (7) is driven and connected with the air outlet grid (6); the indoor air detector ( 8) It is arranged at the rear end of the bottom of the air purification box (5); the controller (9) is a touch liquid crystal display screen, and the controller (9) is fixed on the wall 1.5m to 1.6m away from the ground; The drive motor (2) of the air intake device, the outdoor air detector (3), the drive motor of the air outlet grid (7) and the indoor air detector (8) are controlled and connected to the controller (9) through wires respectively. 2. A kind of large-scale commercial air exchange according to claim 1, is characterized in that, described air cleaning box (5) comprises: cleaning brush (5-1), primary filter layer (5-2), Harmful gas adsorption layer (5-3), secondary filter layer (5-4); wherein the primary filter layer (5-2) is located at the front end of the air purification box (5), and the primary filter layer (5- 2) The distance from the air inlet device (1) is between 20cm and 30cm; the cleaning brush (5-1) performs horizontal reciprocating motion on the surface of the primary filter layer (5-2), and the air purification box (5) is equipped with There are 2 cleaning brushes (5-1); the secondary filter layer (5-4) is located at the inner rear end of the air purification box (5), and the secondary filter layer (5-4) is at a distance from the air outlet grid (6) Between 30cm and 40cm, the secondary filter layer (5-4) is a HEPA high-efficiency clean filter; harmful gas is provided between the primary filter layer (5-2) and the secondary filter layer (5-4) Adsorption layer (5-3). 3. A kind of large commercial air exchanger according to claim 2, characterized in that, the cleaning brush (5-1) comprises: a drive motor (5-1-1), a telescopic rod (5-1-2 ), a moving rod (5-1-3), and a cleaning brush head (5-1-4); wherein the drive motor (5-1-1) is fixedly connected to the surface of the inner side wall of the air purification box (5), The drive motor (5-1-1) is driven and connected to one end of the telescopic rod (5-1-2), and the telescopic range of the telescopic rod (5-1-2) is between 25cm～40cm; the telescopic rod (5-1-2) -1-2) The other end is fixedly connected to the moving rod (5-1-3), the material of the moving rod (5-1-3) is stainless steel; the other end of the moving rod (5-1-3) is fixed The cleaning brush head (5-1-4) is connected, and the cleaning brush head (5-1-4) is a detachable structure. There are a lot of bristles attached to the cleaning brush head (5-1-4), and the material of the bristles is PVC Material; The drive motor (5-1-1) is controlled and connected to the controller (9) through wires. 4. A kind of large-scale commercial air exchanger according to claim 2, is characterized in that, described primary filter layer (5-2) comprises: large particle dust filter screen (5-2-1), tiny particle dust Filter screen (5-2-2), high-efficiency sterilization filter screen (5-2-3), dust concentration detection sensor (5-2-4); wherein said large particle dust filter screen (5-2-1 ) is made of polyester fiber, and the thickness of the large particle dust filter (5-2-1) is between 3mm and 5mm; the micro particle dust filter (5-2-2) is located in the large particle dust filter ( 5-2-1) behind, the micro particle dust filter screen (5-2-2) is made of glass fiber material; the surface of the high-efficiency sterilization filter screen (5-2-3) is sprayed with a sterilant; the dust The concentration detection sensor (5-2-4) is arranged at the lower end of the frame of the large particle dust filter (5-2-1), and the dust concentration detection sensor (5-2-4) is connected to the controller (9) through wire control . 5. A kind of large commercial air exchanger according to claim 2, characterized in that, the harmful gas adsorption layer (5-3) comprises: harmful substance degrading bacteria secretion capsule (5-3-1), activated carbon plate (5-3-2); wherein the activated carbon plate (5-3-2) raw material adopts mineral raw material activated carbon, and the surface of the activated carbon plate (5-3-2) is attached with a large amount of harmful substance degrading bacteria secretion capsule (5-3 -1), the number of secretory vesicles (5-3-1) of the harmful substance degrading bacteria is not less than 8000. 6. A kind of large-scale commercial air exchanger according to claim 4, characterized in that, the high-efficiency sterilization filter (5-2-3) is molded by polymer material, and the high-efficiency sterilization filter (5 -2-3) The composition and manufacturing process are as follows: 1. Composition of high-efficiency sterilization filter (5-2-3): In parts by weight, 42-114 parts of 4-isopropyl-2-propenyltoluene, 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid-3, 18-52 parts of 4,5,6-tetrahydropeptidimidomethyl ester, 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenyl 86-154 parts of oxazolin-5-one, (R,S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dichlorovinyl)-2 , 38-104 parts of 2-dimethylcyclopropanecarboxylate, (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methyl 98-208 parts of butyrate, 145-208 parts of α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropane carboxylate 308 parts of 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3-phenoxy-benzyl ester 24 ～63 parts, (1R)-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropanecarboxylic acid-3-phenoxybenzyl ester 36～88 parts , 114-196 parts of 1-aminocyclopropane-1-carboxylic acid, 38-64 parts of cross-linking agent, 78-134 parts of 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino) -2-[(2,4-Dinitrophenyl)azo]phenyl]-acetamide 52～105 parts, N-[5-[di(2-acetoxy)ethyl]amino]-2 -[(2-Chloro-4-nitrophenyl)azo]phenylpropanamide 33~81 parts, N-[2-[(2-bromo-4,6-dinitrophenyl)azo] - 47-103 parts of 5-[(2-cyanoethyl)amino]-4-methoxyphenyl]-acetamide; The cross-linking agent is 2-hydroxyl-N-methylacetanilide, N-oxydiethylene-2-benzothiazole sulfenamide, diacetoacetyl-2-chloro-5-methyl-p-phenylenediamine any of the 2. The manufacturing process of the high-efficiency sterilization filter (5-2-3) includes the following steps: Step 1: Add 998 to 1354 parts of ultrapure water with a conductivity of 1.28μS/cm to 3.22μS/cm into the reactor, start the stirrer in the reactor at a speed of 45rpm to 96rpm, start the heating pump, and make the reactor The internal temperature rises to 52 ° C ~ 86 ° C; sequentially add 4-isopropyl-2-propenyl toluene, 2,2-dimethyl-3-(2-methyl-1-propenyl) cyclopropanecarboxylic acid- 3,4,5,6-tetrahydropeptidimidomethyl ester, 4-4-[bis(2-chloroethyl)amino-2-methoxybenzylidene]-2-phenylazole Lin-5-one, stir until completely dissolved, adjust the pH value to 2.5-7.2, adjust the speed of the agitator to 114rpm-254rpm, the temperature is 76°C-156°C, and the esterification reaction is 14-32 hours; Step 2: Take the (R,S)-α-cyano-3-phenoxybenzyl(1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethyl ring Propane carboxylate, (S)-alpha-cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate were pulverized, and the particle size of the powder was 1100～3200 mesh; add α-cyanophenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-diylmethylcyclopropane carboxylate and mix evenly, spread out In the tray, the tile thickness is 12mm-26mm, and the dose is 2.8kGy-8.5kGy, the energy is 3.2MeV-12MeV α-ray irradiation for 45-105 minutes, and the same dose of β-ray irradiation for 86-104 minutes; Step 3: The mixed powder treated in step 2 is dissolved in 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylic acid-alpha-cyano-3-phenoxy -Benzyl ester, add to the reaction kettle, the stirrer speed is 72rpm~142rpm, the temperature is 45℃~158℃, start the vacuum pump to make the vacuum degree of the reaction kettle reach -1.78MPa~0.32MPa, keep this state for 16~24 hours ; Decompress and feed radon gas, make the pressure in the reactor be 0.54MPa～0.98MPa, keep the heat preservation and stand still for 12～25 hours; The stirring speed is raised to 254rpm～302rpm, and the reactor is depressurized to 0MPa simultaneously; Add (1R )-trans-2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropanecarboxylate-3-phenoxybenzyl ester, 1-aminocyclopropane-1-carboxylate After the acid is completely dissolved, add a cross-linking agent and stir to mix, so that the hydrophilic-lipophilic balance value of the reaction kettle solution is 6.2-7.6, and keep the temperature for 11-25 hours; Step 4: Add 3-(ethylphenylamino)propionitrile, N-[5-(diethylamino)-2-[(2,4-dinitro Phenyl)azo]phenyl]-acetamide, N-[5-[bis(2-acetoxy)ethyl]amino]-2-[(2-chloro-4-nitrophenyl)azo ]phenylpropanamide and N-[2-[(2-bromo-4,6-dinitrophenyl)azo]-5-[(2-cyanoethyl)amino]-4-methoxybenzene Base]-acetamide, increase the pressure of the reactor to 1.2MPa～2.4MPa, the temperature is 167℃～254℃, and the polymerization reaction takes 14～24 hours; °C to 40 °C, discharge the material, and put it into a compression molding machine to produce a high-efficiency sterilization filter (5-2-3). 7. A kind of automatic control working process of large-scale commercial air exchanger, it is characterized in that, the method comprises the following steps: Step 1: Turn on the power, the outdoor air detector (3) and the indoor air detector (8) respectively feed back the detected outdoor air pollution concentration and indoor air pollution concentration to the controller (9) in the form of electrical signals, At the same time, the controller (9) calculates the outdoor AQI value and the indoor AQI value respectively by the calculation unit; Step 2: By calculating the comparison unit, the controller (9) compares and calculates the outdoor AQI value and the indoor AQI value; when the indoor AQI value is higher than the outdoor AQI value, the controller (9) first starts the air intake device to drive the motor ( 2) Make the air inlet device (1) ventilate the air purification box (5) at a wind speed of 3m/s to 5m/s, and after 5min to 8min, the controller (9) controls the air grille drive motor (7) Start to make the purified air flow into the room through the air outlet grille (6); when the indoor AQI value is level one, the controller (9) turns off the drive motor (2) of the air inlet device and the drive motor (7) of the air outlet grille , to end the ventilation; Step 3: During the air purification process, the outdoor dirty air enters the air purification box (5) through the air inlet device (1), and first filters the outdoor dirty air through the primary filter layer (5-2). Among them, the large particle dust filter (5-2-1) mainly absorbs large particle dust such as animal dander and plant catkins in the air, and the micro particle dust filter (5-2-2) mainly absorbs the particle size in the air below 10 microns. The inhalable particles, pollen and other dust are filtered, and the high-efficiency sterilization filter (5-2-3) performs preliminary adsorption on the peculiar smell of oil fume and cigarettes in the air, and removes part of the bacteria in the air; after the primary filter layer (5-2-3) 2) After filtration, the harmful gas adsorption layer (5-3) effectively decomposes and absorbs harmful gases such as oil fume and formaldehyde remaining in the air, and then, the HEPA high-efficiency clean filter in the secondary filter layer (5-4) is Dust with a particle size of 0.3 microns in the air is effectively filtered to obtain clean air, and finally the clean air flows into the room through the air outlet grille (6); Step 4: When the primary filter layer (5-2) is performing primary filtration, when the dust concentration detection sensor (5-2-4) detects the dust concentration on the large particle dust filter (5-2-1) When greater than 80ppm, the dust concentration detection sensor (5-2-4) sends a feedback signal to the controller (9), and the controller (9) starts the driving motor (5-1-1) on the cleaning brush (5-1) ), drive the telescopic rod (5-1-2) to spirally expand and contract, thereby driving the moving rod (5-1-3) to reciprocate horizontally, and the cleaning brush head (5-1-4) will be attached to the large particle dust filter screen (5 -2-1) Clean the dust on it; clean the brush head (5-1-4) and disassemble and clean it regularly.