CN111912054A - Electrostatic filtration device for microorganisms in the air - Google Patents

Abstract

An electrostatic filtering device for microorganisms in the air comprises a casing, an air channel is arranged in the casing, an air inlet is arranged at one end of the air channel, an air outlet is arranged at the other end of the air channel, and a plurality of plates are arranged in the air channel The surface of the microplate can pass through the air flow, the microplate is made of conductive material, and the plate surfaces of multiple microplates are arranged side by side along the axial direction of the air channel; there are multiple airflow channels and multiple air channels juxtaposed between the microplates. There are two exhaust passages, the airflow passage and the exhaust passage are staggered, and a discharge electrode is arranged in the middle of the airflow passage. Its purpose is to provide an air conditioner with a large amount of gas per unit time, and the effect of removing various harmful viruses is very prominent. It is a kind of harmful virus, which can effectively reduce the risk of airborne transmission of various infectious diseases and protect people's health.

Description

Electrostatic filtration device for microorganisms in the air

technical field

The invention relates to a device for electrostatically filtering microorganisms in the air.

Background technique

A variety of viruses, including the new coronavirus, can spread through the air in large shopping malls, supermarkets, subways, hotels, farmers markets, airports, restaurants and other crowded places and infect many people, seriously threatening people's health. However, due to various reasons, there is no equipment that can effectively remove various harmful viruses in the air of crowded places such as large shopping malls, supermarkets, subways, hotels, farmers markets, airports, and restaurants.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a large amount of processed gas per unit time, the effect of removing various harmful viruses is very prominent, and it can effectively remove the air in crowded places such as large shopping malls, supermarkets, subways, hotels, farmers markets, airports, restaurants, etc. It can effectively reduce the risk of transmission of various infectious diseases through the air and protect people's health.

The electrostatic filtering device for microbes in the air of the present invention comprises a casing, an air passage is arranged in the casing, an air inlet is arranged at the front end of the air passage, an air outlet is arranged at the rear end of the air passage, and a plurality of air passages are arranged in the air passage. The plate surface can pass through the air flow micro-plate, the micro-plate is made of conductive material, and the plate surfaces of multiple micro-plates are arranged along the front and rear directions;

Air flow channels are arranged between the micro-orifice plates, more than one baffle plate for changing the direction of the air flow is arranged in the air-flow channels between the micro-orifice plates, and a discharge electrode is arranged in the middle part of the air flow channel along the front-rear direction.

The electrostatic filtering device for microorganisms in the air of the present invention, wherein the front end of the airflow channel is provided with a front baffle, and the front baffle is provided with a front baffle and an airflow channel from one side of the air channel to the other side according to the front end of an airflow channel. The front end of the air flow channel is not provided with a front baffle, the front end of the next airflow channel is provided with a front baffle, and the front end of the next air channel is not provided with a front baffle.

In the electrostatic filtering device for microbes in the air of the present invention, the rear end of the airflow channel is provided with a rear baffle, and the rear baffle is provided with a rear baffle and an airflow from one side of the air channel to the other side according to the front end of an airflow channel. The front end of the passage is not provided with a rear baffle, the front end of the next air passage is provided with a rear baffle, and the front end of the next air passage is not provided with a rear baffle in a changing sequence.

In the electrostatic filtration device for microorganisms in the air of the invention, the thickness of the microplate is greater than 2 mm, and the number of holes per inch of the microplate is greater than 40 PPI.

In the electrostatic filtration device for microorganisms in the air of the invention, the thickness of the microplate is 6mm-30mm, and the number of holes per inch of the microplate is 80-120 PPI.

In the electrostatic filtration device for microorganisms in the air of the present invention, the air channel is located in the front and rear horizontal directions, the plate surface of the microporous plate is located in the front and rear vertical direction, the plate surface of the rear baffle and the plate surface of the front baffle are perpendicular to the microporous plate, The thickness of the microplate is 10mm-20mm, and the number of wells per inch of the microplate is 90-110 PPI.

In the electrostatic filtering device for microbes in the air of the present invention, the microporous plate is made of a foamed metal plate, and the surface of the microporous plate is covered with metallic silver.

In the electrostatic filtering device for microorganisms in the air of the present invention, the baffles are provided with n baffles in one airflow channel and n+1 baffles in one airflow channel from one side of the air channel to the other side, and the bottom There are n baffles in one airflow channel and n+1 baffles in the next airflow channel, and the baffles in the adjacent airflow channels are arranged in a staggered position;

The above n=1, 2, 3, 4, . . .

In the electrostatic filtration device for microbes in the air of the present invention, the part corresponding to the microporous plate on the side wall of the casing is provided with a sterilizing and cleaning door that can be conveniently opened or closed.

When the electrostatic filtration device for filtering microorganisms in the air of the present invention is in use, the discharge electrode is connected to a high-voltage DC power supply, and then a fan is used to let the gas with suspended microorganisms enter the air channel of the electrostatic filtration device for microorganisms in the air, and the electrostatic filtration The air channel of the microbial device in the air enters multiple airflow channels. When the gas mixed with microorganisms and dust flows through the discharge electrode in the airflow channel, the microorganisms and dust in the gas will be in a state of charge when they approach the discharge electrode, and then the gas will be in a state of charge. The microorganisms pass through the microplate and enter another airflow channel. When the gas passes through the microplate and enters another airflow channel, the distance between the microorganisms and dust and the microplate will inevitably become very small, and the gas will be charged. Electrically charged microorganisms and dust are captured by the microplate via electrosorption. As a result, it can ensure that the processing air flow is large and the efficiency of removing microorganisms including various viruses in the air is high. Calculated by the number of viruses, it can remove more than 96% of the microorganisms in the air on the basis of the large processing air flow. number of viruses. Therefore, using the electrostatic filtration device for microbes in the air of the present invention can effectively remove various harmful viruses in the air of crowded places such as large shopping malls, supermarkets, subways, hotels, farmers markets, airports, restaurants, etc. The risk of infectious diseases transmitted through the air, protect people's health.

The device for electrostatic filtering of microorganisms in the air of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

1 is a front view of a schematic structural diagram of an electrostatic filtration device for microbes in the air of the present invention;

FIG. 2 is a top view of FIG. 1 .

Detailed ways

As shown in FIG. 1 and FIG. 2 , the device for electrostatically filtering microorganisms in the air of the present invention includes a casing 1, an air passage 2 is provided in the casing 1, and an air inlet is provided at the front end of the air passage 2. The rear end is provided with an air outlet, and the air channel 2 is provided with a plurality of micro-orifice plates 3 through which the air flow can pass. ;

There is an air flow channel 5 between the micro-orifice plates 3, and more than one baffle plate 6 for changing the direction of the air flow is provided in the air flow channel 5 between the micro-orifice plates 3, and the baffle plates 6 in the air flow channel 5 Arranged in staggered positions, a discharge electrode 4 is arranged in the middle of the airflow channel 5 along the front-rear direction.

When in use, the discharge electrode 4 is electrically connected to the negative or positive electrode of the high voltage DC power supply, the microplate 3 is grounded, or the microplate 3 is connected to the electrode of the high voltage DC power supply whose polarity is opposite to that of the discharge electrode 4 .

When the gas mixed with microorganisms and dust flows in the airflow channel 5, it will be blocked by the baffle 6, so that the airflow changes direction and repeatedly passes through the microplate 3. During this process, the microorganisms and dust in the gas enter When the electrode 4 is discharged, it will be charged, and then it will be captured by the microporous plate 3 through electro-adsorption or filtration when passing through the microporous plate 3. Because the airflow will change direction many times and repeatedly pass through the microporous plate 3, A small amount of microorganisms and dust remaining in the gas will also have many chances to be captured by the microplate 3 through electro-adsorption or filtration, thereby further improving the efficiency of removing microorganisms including various viruses in the air.

As a further improvement of the present invention, the front end of the above-mentioned airflow channel 5 is provided with a front baffle 7, and the front baffle 7 is provided with a front baffle 7, a The front end of the airflow channel 5 is not provided with a front baffle 7 , the front end of the next air channel 5 is provided with a front baffle 7 , and the front end of the next air channel 5 is not provided with a front baffle 7 .

As a further improvement of the present invention, the rear end of the above-mentioned airflow channel 5 is provided with a rear baffle 8, and the rear baffle 8 is provided with a rear baffle 8, The front end of one airflow channel 5 is not provided with a rear baffle 8 , the front end of the next airflow channel 5 is provided with a rear baffle 8 , and the front end of the next airflow channel 5 is not provided with a rear baffle 8 .

As a further improvement of the present invention, the thickness of the microplate 3 is greater than 2 mm, and the number of holes on the microplate 3 per inch PPI is greater than 40.

As a further improvement of the present invention, the thickness of the above-mentioned microplate 3 is 6mm-30mm, and the number of holes on the microplate 3 per inch PPI is 80-120.

As a further improvement of the present invention, the above-mentioned air channel 2 is located in the front and rear horizontal direction, the plate surface of the micro-orifice plate 3 is located in the front and rear vertical direction, and the plate surface of the rear baffle 8 and the plate surface of the front baffle 7 are perpendicular to the micro-orifice plate 3 , the thickness of the microplate 3 is 10mm-20mm, and the number of holes on the microplate 3 per inch PPI is 90-110.

As a further improvement of the present invention, the above-mentioned microporous plate 3 is made of a foamed metal plate, and the surface of the microporous plate 3 is coated with metallic silver. The metal silver coated on the surface of the microplate 3 can make the captured virus die faster.

As a further improvement of the present invention, the above-mentioned baffles 6 are provided with n baffles 6 in one airflow channel 5 and n+1 baffles 6 in one airflow channel 5 from one side of the air channel 2 to the other side. , the next airflow channel 5 is provided with n baffles 6 and then the next airflow channel 5 is provided with n+1 baffles 6 in a changing order, and the baffles in the adjacent airflow channels are arranged in front and rear staggered positions;

The above n=1, 2, 3, 4, . . .

As a further improvement of the present invention, a portion corresponding to the microporous plate 3 on the side wall of the casing 1 is provided with a sterilizing and cleaning door (not shown in the figure) that can be conveniently opened or closed. When in use, the microporous plate 3 can be cleaned and disinfected by opening the disinfection and cleaning door.

The electrostatic filtration device for microorganisms in the air of the present invention adopts the design of a plurality of microporous plates 3 with the plate surfaces arranged in the front and rear directions, and more than one air flow channel 5 between the microporous plates 3 is provided for letting The baffles 6 for changing the direction of the airflow, the baffles 6 in the adjacent airflow channels 5 are arranged in front and rear staggered positions, and the middle part of the airflow channel 5 is provided with a design of a discharge electrode 4 along the front and rear directions, so that the device can be installed in the same volume. The cross section of the microporous plate 3 for treating microorganisms in the air by electrosorption is greatly increased, so that the same volume of gas can pass through the microporous plate 3 at a lower speed per unit time, and the thickness of the microporous plate 3 is greater than 2mm, and the number of holes on the microplate 3 per inch is designed with a PPI greater than 40, so that a more thorough and efficient electrosorption capture of tiny viruses in the air can be achieved. Through the inspection of the microbial purification efficiency project, the basis for the inspection of the microbial purification efficiency project is "JGT294-2010 "Determination of Air Purifier Pollutant Purification Performance", and the obtained experimental data is: when the air inlet 10 of the air channel 2 The sampling concentration of microorganisms is 10233 cfu/m ³ , the air volume at the air inlet 10 is 9067.9 m ³ /h, and the sampling concentration of microorganisms at the air outlet 11 of the air channel 2 is 371 cfu/m ³ , that is, the electrostatic filtration of the present invention is in the air. The microbial device removal efficiency was 96.37%.

While doing the above-mentioned microbial purification efficiency project inspection experiment, the present invention was also tested for PM2.5 purification efficiency. The basis of this PM2.5 purification efficiency test is "GB/T34012-2017 "Air Purification Device for Ventilation System"" , the obtained experimental data are: when the average concentration of PM2.5 pollutants at the air inlet 10 of the air passage 2 is 246.5 μm/m ³ , the air volume at the air inlet 10 is 9034.7 m ³ /h, and the air passage 2 The average concentration of pollutants at the air outlet 11 is 8.7 μm/m ³ , that is, the PM2.5 removal efficiency of the electrostatic filtration device for microbes in the air of the present invention is 96.47%.

When the electrostatic filtration device of the present invention is in use, the discharge electrode 4 is connected to a high-voltage DC power supply, so that a potential difference of 20,000 volts is generated between the discharge electrode 4 and the microporous plate 3, and then a fan is used to make the suspended microorganisms The gas enters the air channel 2 of the electrostatic filtration device for microorganisms in the air, and enters a plurality of airflow channels 5 along the air channel 2 of the electrostatic filtration device for microorganisms in the air. The gas mixed with microorganisms and dust flows in the airflow channel 5 through the discharge air. When the electrode 4 is used, the microorganisms and dust in the gas will be in a charged state when approaching the discharge electrode 4, and then the microorganisms in the gas will pass through the microplate 3 and enter another airflow channel 5. Since the thickness of the microplate 3 is greater than 2mm , the number of holes on the microplate 3 per inch PPI is greater than 40. When the gas passes through the microplate 3 and enters another airflow channel 5, the distance between the microorganisms and dust and the microplate 3 must become very large. Small, charged microorganisms and dust in the gas will be captured by the microplate 3 by electrosorption. As a result, it can ensure that the processing air flow is large and the efficiency of removing microorganisms including various viruses in the air is high. Calculated by the number of viruses, it can remove more than 96% of the microorganisms in the air on the basis of the large processing air flow. number of viruses. Therefore, using the electrostatic filtration device for microbes in the air of the present invention can effectively remove various harmful viruses in the air of crowded places such as large shopping malls, supermarkets, subways, hotels, farmers markets, airports, restaurants, etc. The risk of infectious diseases transmitted through the air, protect people's health.

In the electrostatic filtration device of the present invention, under the action of the electric field between the air flow channels 5, an ion wind can be generated towards the microporous plate 3. The trapped harmful viruses are blown towards the microplate 3 and reciprocate through the microplate 3 for many times, so that they are finally captured, thereby further improving the purification effect.

Claims (9)

1. The device for electrostatically filtering microorganisms in the air is characterized in that: comprising a casing (1), an air passage (2) is provided in the casing (1), and an air inlet is provided at the front end of the air passage (2), and the air passage The rear end of (2) is provided with an air outlet, and the air channel (2) is provided with a plurality of microporous plates (3) through which the air flow can pass. The board surface of the board (3) is arranged along the front-rear direction; Air flow passages (5) are arranged between the microplates (3), and more than one baffle plate (6) for changing the direction of the air flow is arranged in the air passages (5) between the microplates (3). A discharge electrode (4) is arranged in the middle part of the airflow channel (5) along the front and rear direction. 2. The device for electrostatically filtering microorganisms in the air according to claim 1, characterized in that: the front end of the air passage (5) is provided with a front baffle (7), and the front baffle (7) is separated from the air passage (2). ) is provided with a front baffle (7) according to the front end of one air passage (5), the front end of one air passage (5) is not provided with a front baffle (7), and the next air passage (5) The front end of the air flow channel (5) is provided with a front baffle (7), and the front end of the next airflow channel (5) is not provided with a front baffle (7). 3. The electrostatic filtration device for microbes in the air according to claim 2, characterized in that: the rear end of the air passage (5) is provided with a rear baffle (8), and the rear baffle (8) is separated from the air passage (5). 2) From one side to the other side, a rear baffle (8) is provided according to the front end of one airflow channel (5), the front end of one airflow channel (5) is not provided with a rear baffle (8), and the next airflow channel (5) is provided with a rear baffle (8). The front end of the ) is provided with a rear baffle (8), and the front end of the next airflow channel (5) is not provided with a rear baffle (8). 4. The device for electrostatic filtration of microorganisms in the air according to claim 3, characterized in that: the thickness of the microplate (3) is greater than 2mm, and the number PPI of the holes on the microplate (3) per inch is greater than 40 . 5. The device for electrostatic filtration of microorganisms in the air according to claim 4, characterized in that: the thickness of the microplate (3) is 6mm-30mm, and the number of holes on the microplate (3) per inch is PPI 80-120. 6. The device for electrostatically filtering microorganisms in the air according to claim 5, characterized in that: the air passage (2) is located in the front and rear horizontal directions, the plate surface of the microporous plate (3) is located in the front and rear vertical directions, and the backstop The plate surface of the plate (8) and the plate surface of the front baffle plate (7) are perpendicular to the microplate (3), and the thickness of the microplate (3) is 10mm-20mm, and the thickness of the microplate (3) is 10mm-20mm per inch. The number of holes PPI is 90-110. 7 . The device for electrostatically filtering microorganisms in the air according to claim 6 , wherein the micro-porous plate ( 3 ) is made of a foamed metal plate, and the surface of the micro-porous plate ( 3 ) is coated with metallic silver. 8 . 8. The electrostatic filtration device for removing microorganisms in the air according to any one of claims 1 to 7, wherein the baffle plate (6) follows an airflow from one side of the air channel (2) to the other side. There are n baffles (6) in the channel (5), n+1 baffles (6) in one airflow channel (5), and n baffles (6) in the next airflow channel (5). ) In the next airflow channel (5), there are n+1 baffles (6) arranged in changing order, and the baffles (6) in the adjacent airflow channels (5) are arranged in a staggered position; The n=1, 2, 3, 4, . . . 9. The device for electrostatically filtering microorganisms in the air according to claim 8, characterized in that: a part corresponding to the microporous plate (3) on the side wall of the casing (1) is provided with a device that can be easily opened or Closed sanitizing door.

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