KR20100002010A - System and method for collecting and detecting airborne particles - Google Patents

Abstract

PURPOSE: A minute particle capturing/sensing system is provided to automatically collect and sense minute particles in the air. CONSTITUTION: A cyclone is connected to an air pumping unit. An air/capture solution jet nozzle is installed on an inner wall of the cyclone. A collector(100) collects capture solution above the cyclone. A supplementary storage part(110) supplements the capture solution of the storage part. A drain storage part(120) receives the capture solution within the storage part. A detector(130) samples the capture solution of the storage part. The detector measures the pollution level of the capture solution.

Description

System and method for capturing and detecting fine particles in air {SYSTEM AND METHOD FOR COLLECTING AND DETECTING AIRBORNE PARTICLES}

The present invention relates to a system and method for capturing and detecting fine particles in air, and more particularly, to a cyclone method for detecting contamination of a collecting solution after collecting the fine particles contained in an external gas into a collecting solution and collecting them in a liquid phase. A system and method for capturing and sensing microparticles in

In general, air contains micro-materials (hereinafter referred to as "microparticles"), such as microorganisms and dust, which can transmit diseases to humans. In particular, there are many more fine particles such as those in crowded offices and indoor spaces such as subways. Therefore, in an indoor space such as an office, it is necessary to measure the pollution level of the indoor air. In order to measure the pollution level of air, it is necessary to collect fine particles in the air.

Collision, filtration, charging and condensation are known as methods of capturing fine particles in air.

The method for collecting fine particles by collision is to suck air containing the fine particles at a high speed, and collect the fine particles by colliding the suction air with a culture plate or the like by inertial or frictional force. However, such a method cannot be used repeatedly, and there is a problem in that the viability of microorganisms in the microparticles is low.

The method for collecting fine particles by filtration collects the fine particles on the surface of the filter by passing a volume of air. However, such a method requires frequent replacement of the filter and has a problem that it cannot be used repeatedly.

The method for capturing fine particles by charging is to adsorb fine particles to the surface of the filter by electrostatic attraction. However, this method has a problem in that an ion charger is required separately.

The method for collecting fine particles by condensation is to adsorb air containing fine particles to the spray particles to condense the fine particles and collect them in the liquid phase. The method of capturing the microparticles by the condensation has the advantage that the virus can be collected and various detection methods can be used, but there is a disadvantage in that moisture must be provided for adsorption of the microparticles.

Conventionally, a lung simulating aerosol sampler that mimics a human lung structure is disclosed. The aerosol sampler is a device that analyzes fine particles in air accumulated in a bubbler by sucking external air with a vacuum pump. .

However, the conventional sampler as described above does not collect the microparticles contained in the external air in the liquid phase, but is merely a means for measuring the microparticles contained in the external gas by collision or filtration. Therefore, since the conventional sampler is not intended to collect fine particles, the collection efficiency is very low.

Also disclosed is a device for capturing microparticles in air using a cyclone. The main operating principle of the collection device is the inertial adsorption of microparticles from the rotating air stream over the liquid film formed on the inner wall of the chamber by the atomized collection solution. The liquid film rises along the inner wall of the separation column coaxially with the chamber and accumulates in the tank.

The present invention is to solve the above problems, in collecting the microorganism according to the embodiment of the present invention in the liquid phase, while reusing the collection solution and efficiently supply the external gas and the collection solution into the cyclone, the microorganism is adsorbed By efficiently separating the collecting solution and the external gas, it is to provide a fine particle collecting device that can increase the collection efficiency of the microorganisms, maximize the survival rate of the collected microorganisms and minimize the use of the collecting solution.

In order to achieve the above object, the present invention provides a system for collecting and detecting the fine particles in the air by adsorbing the air in the capture solution. A system for capturing and detecting fine particles in air includes a cyclone connected to a means for pumping the air and a nozzle for injecting the air and a collecting solution on an inner wall thereof; A storage unit (cartridge) for storing a collection solution injected into the cyclone chamber; A collector installed at an upper portion of the cyclone and collecting the collecting solution flowing along the inner wall of the cyclone and conveying the collecting solution to the storage unit; A replenishment reservoir connected to the reservoir to compensate for the reduction of the collected solution in the reservoir; A drain storage unit connected to the storage unit to receive a collection solution in the storage unit; And a detector connected to the reservoir to measure a degree of contamination of the capture solution by sampling the capture solution in the reservoir.

The system for capturing and detecting the fine particles in the air may further include a level sensor connected to the storage to sense the level of the collection solution in the storage. The level sensor may be a diaphragm pressure sensor.

In addition, a three-way feed connector can be installed on top of the cartridge. The first inlet nipple of the three-way supply connector is connected with the recirculation pipe, the second inlet nipple of the three-way supply connector is connected with the supply pipe connected to the replenishment reservoir, and the third inlet nipple of the three-way supply connector. May be connected to a first adjustment pipe connected to the upper portion of the level sensor.

In addition, a three-way drain connector may be installed below the cartridge. The first outlet nipple of the three-way drain connector is connected to a second control pipe connected to the lower portion of the level sensor, the second outlet nipple of the three-way drain connector is connected to a sampling pipe connected to the detector, and The third outlet nipple of the directional drain connector may be connected to a drain pipe connected to the drain reservoir.

The system for capturing and detecting fine particles in the air further includes means for pumping the gas in accordance with electrical signals from the detector and level sensor, a microcontroller for controlling the operation of the feed pump, the drain pump and the sampling pump. It may include.

The microcontroller may further include an A / D converter connected to the level sensor, a processor connected to the detector, a switch connected to the supply pump, a drain pump, and a sampling pump, and a relay connected to a means for pumping the gas. It may include an input unit and a display unit.

In order to achieve the above object, there is provided a method for capturing and detecting fine particles in air. The method for capturing and detecting the fine particles in the air, the method comprising the steps of: filling the storage solution in the storage solution; Capturing the fine particles contained in air into the packed collection solution using a cyclone; A sampling step of measuring a degree of contamination of the collection solution filled in the storage unit; Draining the collection solution filled in the storage when the pollution degree exceeds a preset reference value; And refilling the collection solution with the storage and cleaning the internal space with the refilled collection solution.

The collecting of the fine particles may include mixing the packed collection solution and air by a cyclone to supply the packed collection solution and air to an internal space; Mixing the air and the collection solution by a cyclone to adsorb the fine particles contained in the air to the collection solution and collecting the collection solution to which the fine particles are adsorbed; And returning the collected capture solution to the reservoir for remixing with the air.

In addition, the method for capturing and detecting the fine particles in the air, may further include the step of replenishing the collection solution to the storage when the level is lowered by measuring the level of the collection solution returned to the storage.

By the system for capturing and detecting the fine particles in the air as described above, the user can automatically collect and monitor the fine particles in the air as desired.

Hereinafter, the microparticle collecting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a microparticle collecting device according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the microparticle collecting device cut along the line I-I of Figure 1, Figure 3 according to an embodiment of the present invention It is a side view of a microparticle collecting device, and FIG. 4 is sectional drawing of the microparticle collecting device which cut | disconnected the II-II line | wire of FIG.

Referring to FIG. 1, the microparticle collecting device 100 according to an exemplary embodiment of the present invention is installed at one side of a cyclone 10 and a cyclone 10 through which an external gas is introduced through an inlet manifold 16. Cartridge 20, which is a storage unit for supplying a collecting solution into the cell), and a collector 30 mounted on an upper portion of the cyclone 10 to collect and recirculate the collecting solution film moving in the cyclone 10.

A recirculation pipe 40 is connected between the supply connector 26 of the cartridge 20 and the collector 30 to convey the collected solution collected in the collector 30 back to the cartridge 20.

2 and 4, the cyclone 10 is mounted on the vortex chamber 12 having a cylindrical space therein and the vortex chamber 12, and the adsorption chamber 14 having a conical inner space formed therein. ). The inner space of the cyclone 10 is depressurized by a vacuum pump. The vacuum pump easily forms a spiral vortex wind and a spiral collection solution film along the inner wall of the cyclone 10. The vacuum pump depressurizes the pressure so that the collection solution membrane can reach the upper portion of the adsorption chamber 14 and flow into the collector 30.

An inlet manifold 16 is installed on the inner wall of the vortex chamber 12. The outlet portion of the inlet manifold 16 is provided tangentially to the circular cross section of the vortex chamber 12. The outlet section has a planar section extending vertically and has an orifice of a nozzle of two independent passages 162, 164 (FIG. 4). Both passages 162, 164 from the inlet side of the inlet manifold 16 are integrated by a conical inlet nozzle 163. Through the conical inlet nozzle 163, outside air is introduced into the microparticle collecting device. Both passages 162 and 164 are formed identically in the form of a cylindrical tube, and the passage diameter increases stepwise to the inner region of the vortex chamber 12 near their outlet. At the point of change in diameter, a nozzle orifice is provided. The upper air ejector 161 and the lower solution ejector 165 are connected to the inner region of the cartridge 20 by ejector tubes 22 and 24, respectively (FIG. 2).

The cartridge 20 is detachably mounted to one side of the vortex chamber 12 of the cyclone 10, and an internal space is filled with a collection solution for adsorbing fine particles contained in an external gas. In one example, cartridge 20 may be snapped to the cyclone 10.

The cartridge 20 is connected to another unit of the collecting device 100 by a supply connector 26 and a drain connector 28 (FIG. 2).

The upper nipple of the feed connector 26 is connected to the recirculation pipe 40 and the side nipple is connected to the feed pipe 50. The supply pipe 50 connects the cartridge 20 with a tank (not shown) filled with a new collection solution through the solenoid valve V1. This tank periodically refills the capture solution into the cartridge 20 to compensate for the reduction in the capture solution sampled or evaporated with the detector.

A suction ejector tube 24 for transferring the collection solution to the cyclone 10 is installed through the side wall of the cartridge 20. The capture solution sucked through the suction ejector tube 24 flows into the solution ejector nozzle 165 of the inlet manifold 16. The capture solution is sprayed by the effect of decompression due to the incoming air flow and the stepwise diameter change of the passage 164. The suction ejector tube 24 is bent downward to extend the suction solution even when the level of the capture solution is lowered.

The sampling pipe 60 is connected to the second outlet nipple of the drain connector 28 to transfer a predetermined amount of the collecting solution to a detector (not shown). The detector senses the content of the fine particles in the collection solution. The sampling pipe 60 may be provided with a valve V2 such as a microvalve for controlling the inflow and outflow of the collection solution transferred to the detector.

A drain pipe 80 is installed in the third outlet nipple of the drain connector 28 to transfer the contaminated capture solution from the cartridge 20 to the drain tank (not shown). A valve V3 is provided in the drain pipe 80 to regulate the outflow of the contaminated capture solution.

In addition, a sensor SP for measuring the level of the collection solution is installed in the cartridge 20 by the first outlet nipple and tube 70 of the drain connector 28. In one example, a pressure sensor may be used as the sensor.

The collector 30 is a collection tank 32 fitted into the adsorption chamber 14 of the cyclone 10, a separator 34 disposed at a predetermined distance from an upper end of the adsorption chamber 14 of the cyclone 10, and the collection. A cap 36 covering the opening formed in the top of the tank 32. The upper part of the separator 32 has a cylindrical outlet tube for connecting the collecting device 100 to a vacuum pump (not shown) while penetrating the cap 36 of the cyclone 10.

A passage orifice 38 is formed along the circumference of the cylindrical outlet tube below the cap 36 of the cyclone 10 to send out air that enters the interior space of the collector 30 through the separator gap 34. do.

The collection tank 32 collects the collection solution film which flows in contact with the wall surface of the adsorption chamber 14. The bottom surface of the collection tank 32 is formed with a groove inclined to one side along the circumference thereof to collect the collection solution to the point connecting the recirculation pipe 40. Accordingly, the capture solution may be easily introduced into the recycle pipe 40.

Separator 34 is to block the capture solution film flowing along the inner wall of the adsorption chamber 14 from moving upward. Separator 34 may be formed to surround the inner wall and the outer wall along the upper circumference of the adsorption chamber 34 in order to increase the blocking efficiency of the collection solution.

The recirculation pipe 40 is connected to the bottom surface of the collection tank 32 and is connected to the top surface of the cartridge 20 through the supply connector 26 to collect the collecting solution collected in the collection tank 32 to the cartridge 20. Return.

Hereinafter, the action of the microparticle collecting device according to an embodiment of the present invention will be described with reference to FIGS. 2 and 4.

When the vacuum pump connected to the cylindrical outlet tube of the separator 34 is operated, pumping of air through the cyclone 10 starts. Air enters the vortex chamber 12 through the inlet manifold 16, which is divided into two flows into the inner passages 162, 164.

The nozzle 165 in the lower inner passage 164 of the inlet manifold 16 located in the region where the inner passage diameter changes stepwise acts as an ejector. This is because a step in the inner passage ensures a significant reduction in air pressure in the ejector. The ejector generates liquid suction of the ejector tube 24 from the cartridge 20. The liquid sucked in the ejector nozzle 165 is atomized by the energy of the air flow in the lower inner passage 164, resulting in a liquid droplet aerosol. Thus, the interaction of the intake air and the liquid release aerosol which flows toward each other in the outlet region of the passage 164 of the inlet manifold 16 occurs, resulting in fine particles of intake air on the surface of the large particles of the liquid release aerosol. Is adsorbed. In this way, since collection starts directly in the passage 164 of the inlet manifold 16, the collection efficiency of the collection device 100 is increased.

Since the inlet manifold 16 is installed in the tangential direction in the adsorption chamber 12, vortices in which air and solution are dispersed in the chamber are generated, which causes the solution to agglomerate on the inner surface of the chamber and to continuously The circulation film is formed. Due to the pressure reduction inside the collecting device generated by the external vacuum pump, the collecting solution film rises along the inner wall of the adsorption chamber 14 in the form of a wide spiral band, as shown in FIG.

Depending on the consumption of intake air and the proper correlation of the geometric dimensions of the vortex chamber 12 and the adsorption chamber 14 of the intake manifold 16 and cyclone 10, the spiral band of liquid is the top of the adsorption chamber 14. Is reached, and gently passes over the edge of the collector 30 and is conveyed to the cartridge 20 through the recirculation pipe 40. As a result, the collecting device 100 generates a continuous recycling of the collecting solution.

The swirling air as a result of the decompression effect inside the cyclone 10 also rises in a spiral shape while rotating around the cyclone axis, as shown in FIG. Due to the significant difference in density and viscosity of the air and the liquid, the rotational speeds of the two helical streams, that is, the air stream and the solution membrane stream, differ significantly from each other.

The main method of adsorbing fine particles in air from an air stream is controlled by two mechanisms.

As the fine particles collide with the surface of the solution film at the top of the vortex chamber 12 and at the bottom of the adsorption chamber 14, the main adsorption occurs. Another mechanism of adsorption depends on the tangential component of the rotational speed of the vortex air in the cyclone 10. The fine particles are ejected to the cyclone wall by the action of centrifugal force and adsorbed to the rotating capture solution membrane. The greater the centrifugal force, the greater the tangential component of the rotational speed, and consequently the capturer can adsorb smaller particles of smaller diameter. In order to keep the value of the tangential component constant, the adsorption chamber 14 is conical along the axis of the vortex.

As described above, the collection solution collected at the bottom of the collection tank 32 flows to the recirculation pipe 40 connected with the collector 30 through the inclined groove, and then is returned to the cartridge 20. If the capture solution flows by itself only under the action of gravity, the recycle solution accumulates at the bottom of the collection tank 32, resulting in unexpected solution loss and errors in sample evaluation.

In order to eliminate such losses, the upper internal air passage 162 of the inlet manifold 16 is connected to the ejector air tube 22 by the upper nozzle 161.

Due to the step of the intake energy in the air passage 162 of the inlet manifold 16 and the diameter in the passage 162, the cartridge 20 at the connection point of the ejector tube 22 and the feed connector 26 At the top of the pressure drop occurs. Accordingly, the recirculation pipe 40 generates forced suction of the recirculation solution from the collection tank 32 to the cartridge 20, thereby suppressing accumulation of the collection solution collected at the bottom of the collection tank 32.

By using two vertically located passages 162 and 164, the outlet portion of the inlet manifold 16 has a planar shape close to a rectangle. This is to increase the collection efficiency of the microparticles according to the cyclone theory. Thus, the collection device provides a narrow and flat outlet structure to generate natural air rotation within the cyclone 10. According to cyclone theory, such a structure improves the capture efficiency of the microparticles from the air stream.

In addition, the separator 34 of air and solution in the collecting device 100 is installed to divide the two flows of air and solution in the vicinity of the upper end of the adsorption chamber 14 of the cyclone 100, so that the rising energy of the air Reduced, but prevents the ejection of the recycle solution. Separator 34 is wrapped at a distance from the upper end of the adsorption chamber 34. The spacing is adjusted to allow the recycle solution to smoothly pass through the upper end of the adsorption chamber 14 while preventing droplets.

Some of the air passing through the gap of separator 34 returns back to the original air flow through orifice 38 formed in the cylindrical outlet tube wall of separator 34.

In order to sample the collecting solution to analyze the components and the concentration of the collecting solution, the sampling valve V2 provided in the sampling pipe 60 is opened and closed for a predetermined time. Continuous operation of the collecting device 100, in particular, for refilling the collecting solution in the cartridge 20, the valve V1 provided in the supply pipe 50 is opened and closed. Thus, a predetermined amount of fresh collection solution is supplied to the cartridge 20 from an external tank (not shown). When the operation of the collecting device is completed, the contaminated collecting solution of the cartridge 20 is discharged through the drain pipe 80 by the opening and closing action of the valve V3.

The level of the collection solution of the cartridge 20 can be adjusted by the level sensor SP connected to the tube 70 and the drain connector 28 at the bottom of the cartridge 20. The level sensor SP converts the level value of the cartridge 20 into an electrical signal proportional thereto. Pollution degree measurement of the cartridge 20 is performed directly at the detector, the detector analyzes a certain amount of the collection solution.

5 is a cross-sectional view of a microparticle collecting device according to another embodiment of the present invention. In the present embodiment, the same reference numerals are used for the same components as the above-described embodiments, and the description of the same components is omitted.

Referring to Figure 5, the microparticle collecting device according to an embodiment of the present invention includes a three-way supply connector on the top of the cartridge (20). The first inlet nipple 271 of the three-way feed connector 27 is connected with the recirculation pipe 40, the second inlet nipple 272 of the three-way feed connector 27 is connected with the feed pipe 50, The third inlet nipple 273 of the three-way feed connector 27 is connected with a first regulating pipe 91 connected to the top of the level sensor 90.

In addition, the first outlet nipple 281 of the three-way drain connector 28 installed in the lower part of the cartridge 20 is connected to the second control pipe 92 connected to the lower part of the level sensor 90, and the three-way drain connector. The second outlet nipple 282 of 28 is connected to the sampling pipe 60, and the third outlet nipple 283 of the three-way drain connector 28 is connected to the drain pipe 80. In the supply pipe 50, the sampling pipe 60, and the drain pipe 80, a supply pump 52, a sampling pump 62, and a drain pump 82 are respectively installed for the transfer of the collection solution.

FIG. 6 is a view schematically showing a system for collecting and monitoring fine particles in air to which the fine particle collecting device shown in FIG. 5 is applied.

Referring to FIG. 6, the system 200 for collecting and monitoring fine particles in air according to an embodiment of the present invention includes a fine particle collecting device 100, a supplemental storage unit 110, a drain storage unit 120, and a microorganism. The detector includes a microbiological detector 130, a level sensor 90, and a microcontroller 140.

When the level of the collection solution in the cartridge 20 is lowered, the replenishment storage unit 110 supplies a clean collection solution into the cartridge 20 to maintain the level of the collection solution of the cartridge 20. The supplemental reservoir 110 is connected to the cartridge 20 through a supply pipe 50. The feed pump 52 installed in the feed pipe 50 moves the collected solution of the replenishment reservoir 60 to the cartridge 20.

The drain reservoir 120 is connected to the cartridge 20 through the drain pipe 80. The drain reservoir 120 is a place where the contaminated collection solution in the cartridge 20 is received when the degree of contamination of the collection solution in the cartridge 20 is greater than or equal to a predetermined value. The drain pump 82 installed in the drain pipe 80 transfers the contaminated trapping solution of the cartridge 20 to the drain reservoir 120.

The microbial detector 130 samples a portion of the contaminated collection solution in the cartridge 20 to measure the degree of microbial contamination of the collection solution. The microbial detector 130 is connected to the cartridge 20 through the sampling pipe 60, and the sampling pump 62 installed in the sampling pipe 60 receives a predetermined amount of the contaminated collection solution in the cartridge 20. Transfer to).

In addition, the level sensor 90 senses the level of the collection solution in the cartridge 20. One end of the level sensor 90 is connected to the top of the cartridge 20 through the first adjustment pipe 91, and the other end of the level sensor 90 is connected to the top of the cartridge 20 through the second adjustment pipe 92. Connected with wealth. The level sensor 90 may be a membrane sensor of pressure.

The microcontroller 140 may be a vacuum pump 150, a supply pump 52, a drain pump 82, and a sampling pump, which are means for pumping air according to electrical signals of the detector 130 and the level sensor 90. 62) to control the operation. The microcontroller 140 includes an A / D converter 141, a processor 142, a switch 143, a relay 144, an input unit 145, and a display unit 146.

The A / D converter 141 is connected to the level sensor 90 to convert the electrical signal of the level sensor 90, and the processor 142 is connected to each circuit according to the contamination level measured by the microbial detector 130. Give an order. The switch 143 is connected to the supply pump 52, the drain pump 82, and the sampling pump 62, respectively, and according to the instructions of the processor 142, the supply pump 52, the drain pump 82, and the sampling pump ( Turn 62) ON / OFF. The relay 27 is connected to the vacuum pump 150 to turn on / off the vacuum pump 150 according to the command of the processor 142.

7 is a flowchart illustrating the operation of a system for collecting and detecting fine particles in air.

6 and 7, when the start button of the input unit 145 is pressed, the microcontroller 140 operates the feed pump 52 to fill the fresh collecting solution into the empty cartridge 20. When a certain amount of the collecting solution is filled in the cartridge 20, the operation of the feed pump 52 is stopped (S1).

After the supply pump 52 has stopped and a waiting time is set for stabilization of the system, the microcontroller 140 operates the vacuum pump 150 to operate the collection device 100. As the fine particle collecting device 100 operates, fine particles in the air are absorbed by the collecting solution and collected. The collecting device 100 stops after a predetermined cycle (for example, 10 minutes) passes (S2).

After the capture device 100 has stopped and after a while, the microcontroller 140 operates the sampling pump 62 to extract a predetermined amount of the contaminated capture solution in the cartridge 20 and send it to the microbial detector 130 ( S3).

Meanwhile, the level sensor 90 senses the level of the collected solution in the cartridge and sends the measured value to the processor 142. When the level value is lower than the preset reference value, the processor 142 operates the supply pump 52 by the switch 143 to replenish the cartridge 20 with the clean collection solution in the replenishment storage unit 100 (S4). .

Next, the microbial detector 130 measures the contamination level of the sampled collection solution and sends it to the processor 142. The processor 142 determines whether the pollution degree value of the sampled collection solution is equal to or greater than a preset reference value (S5).

If the contamination value of the collection solution is greater than or equal to a preset reference value, the processor 142 operates the drain pump 82 by the switch 143 to transfer all the collection solution in the cartridge 20 to the drain reservoir 120. (S6). If the contamination value of the sampled collection solution measured by the detector 130 is less than the preset reference value, the processor 142 cycles the collection device 100 until the contamination value of the sampled collection solution becomes equal to or greater than the reference value. Repeat.

When all of the collection solution in the cartridge 20 is discharged, the microcontroller 140 operates the feed pump 52 to transfer a predetermined amount of fresh collection solution to the cartridge 20. At this time, since the amount of the collecting solution supplied is for cleaning the collecting device 100, a small amount may be supplied. When the capture solution is supplied into the cartridge 20, the microcontroller 140 operates the vacuum pump 150. At this time, no external gas enters into the cyclone 10 of the collecting device 100, and only a collecting solution flows in (S7).

  After the cleaning operation for a predetermined time, the microcontroller 140 turns off the vacuum pump 150 and turns on the drain pump 82 to discharge the cleaning collecting solution in the cartridge 20, thereby collecting fine particles in the air. And the operation of the sensing system 200 is completed.

By the system for capturing and detecting the fine particles in the air as described above, the user can automatically collect and monitor the fine particles in the air as desired.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

1 is a front view of a microparticle collecting device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the microparticle collecting device cut along the line I-I of FIG. 1, with solid arrows indicating the flow of the collecting solution.

3 is a side view of the microparticle collecting device according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of the microparticle collecting device cut along the line II-II of FIG. 3, and a dotted arrow indicates the flow of air.

5 is a cross-sectional view of a microparticle collecting device according to another embodiment of the present invention.

FIG. 6 is a view schematically showing a system for collecting and detecting fine particles in air to which the fine particle collecting device shown in FIG. 5 is applied.

7 is a flowchart illustrating the operation of a system for collecting and detecting fine particles in air.

Claims (10)

A system for collecting and detecting fine particles contained in air by adsorbing air to a collecting solution, A cyclone connected to a means for pumping the air and having a nozzle on the inner wall for injecting the air and the collecting solution; A storage unit for storing a collection solution injected into the cyclone; A collector installed at an upper portion of the cyclone and collecting the collecting solution flowing along the inner wall of the cyclone and conveying the collecting solution to the storage unit; A replenishment reservoir connected to the reservoir to compensate for the reduction of the collected solution in the reservoir; A drain storage unit connected to the storage unit to receive a collection solution in the storage unit; And And a detector connected to the storage unit to measure a contamination level of the collection solution by sampling the collection solution in the storage unit. The method of claim 1, And a level sensor connected to the reservoir to sense the level of the collection solution in the reservoir. The method of claim 2, And the level sensor is a diaphragm pressure sensor. The method of claim 2, The upper portion of the reservoir is provided with a three-way supply connector, The first inlet nipple of the three-way supply connector is connected with the recirculation pipe, the second inlet nipple of the three-way supply connector is connected with the supply pipe connected to the replenishment reservoir, and the third inlet nipple of the three-way supply connector. The system for capturing and detecting the fine particles in the air, characterized in that connected to the first control pipe connected to the top of the level sensor. The method of claim 2, Three-way drain connector is provided at the bottom of the reservoir, The first outlet nipple of the three-way drain connector is connected to a second control pipe connected to the lower portion of the level sensor, the second outlet nipple of the three-way drain connector is connected to a sampling pipe connected to the detector, and And a third outlet nipple of the directional drain connector is connected to a drain pipe connected to the drain reservoir. The method of claim 2, Means for pumping the air in accordance with the electrical signals of the detector and level sensor, microcontroller for controlling the operation of the feed pump, drain pump and sampling pump further comprises the trapping and sensing of the fine particles in the air system. The method of claim 6, The microcontroller, An A / D converter connected to the level sensor, a processor connected to the detector, a switch connected to the supply pump, a drain pump, and a sampling pump, respectively, a relay connected to a means for pumping the air, an input part, and a display part; A system for collecting and detecting fine particles in the air, characterized in that. Filling the collection solution into the reservoir; Capturing the fine particles contained in air into the packed collection solution using a cyclone; A sampling step of measuring a degree of contamination of the collection solution filled in the storage unit; Draining the collection solution filled in the storage when the pollution degree exceeds a preset reference value; And And refilling the collection solution with a storage unit, and then cleaning the internal space with the refilled collection solution. The method of claim 8, Collecting the fine particles, Mixing the packed collection solution and air by a cyclone to supply the packed collection solution and air to an internal space; Mixing the air and the collection solution by a cyclone to adsorb the fine particles contained in the air to the collection solution and collecting the collection solution to which the fine particles are adsorbed; And returning the collected capture solution to the reservoir for remixing with the air. The method of claim 9, And measuring the level of the collection solution returned to the storage unit, and replenishing the collection solution to the storage unit when the level is lowered.

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