WO2024043377A1

WO2024043377A1 - Moisture-condensation-based airborne particle concentrating-measuring device

Info

Publication number: WO2024043377A1
Application number: PCT/KR2022/012919
Authority: WO
Inventors: 장재성; 장준범
Original assignee: 울산과학기술원
Priority date: 2022-08-26
Filing date: 2022-08-30
Publication date: 2024-02-29
Also published as: KR20240029194A

Abstract

The present invention relates to a moisture-condensation-based airborne particle concentrating-measuring device. The moisture-condensation-based airborne particle concentrating-measuring device, according to an embodiment of the present invention, comprises: an inlet part through which the air including particles is introduced from the outside; a saturation part which maintains the temperature and humidity conditions necessary for the growth of the particles introduced from the inlet part; a growth part which grows the particles included in the air introduced from the saturation part; and a collection part which collects the grown particles from the growth part.

Description

Airborne particle concentration based on moisture condensation - measurement device

The present invention relates to a moisture condensation based particle concentration-measuring device in air.

Viruses and bacteria (bio-aerosols) floating in the air can cause infectiousness or cause economic losses to livestock operations through various exposure routes for humans or livestock.

Bio-aerosols are distributed in various sizes (nanometers - micrometers) in the air and their concentration is also low. For quick collection and detection, the collection device has high collection efficiency for particles of various sizes at high collection flow rates, thereby highly concentrating the particles. It is important to do it. Additionally, it is important to minimize particle damage during the collection process. Existing collectors include collection devices using particle inertia and filter-based collectors. Inertial-based collection devices are capable of collecting using high flow rates, but damage the particles due to the impact applied to them during collection. Additionally, collection using a filter is difficult for a long time due to the drying and extraction process of the collected particles.

In the case of conventional bio-aerosol detection systems, viruses or bacteria solutions collected in a liquid phase through a collection device are usually analyzed using methods such as polymerase chain reaction (PCR). However, the PCR method cannot distinguish whether these people are infectious or not, so it is not only impossible to determine whether they are in a state where they can spread the disease in the air, but also takes a long time for analysis.

At this time, rapid measurement is possible when using an immunoassay, and in the case of viruses, it is possible to partially determine whether or not they are infectious. However, with conventional collection devices, particles are damaged during the collection process, making it difficult to cause an antigen-antibody reaction, which makes it difficult to quickly The downside is that it is difficult to measure.

The present invention is intended to solve the above-mentioned problems, and the purpose of the present invention is to concentrate airborne particles with high collection efficiency at high collection flow rates and minimize the impact on particles during the collection process to eliminate viruses, bacteria, and viruses in the air. The aim is to provide a moisture condensation-based airborne particle concentration-measuring device that can quickly and accurately measure spores, etc.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The moisture condensation-based particle concentration-measuring device in the air according to an embodiment of the present invention includes an inlet into which air containing particles flows from the outside; a saturation section that maintains the temperature and humidity conditions necessary for the growth of particles introduced from the inlet section; a growth section that grows particles contained in the air introduced from the saturation section; and a collection unit that collects particles grown from the growth unit.

In one embodiment, the inlet includes an inlet; and an inlet pipe through which air containing particles flows through the inlet part, the saturation part, the growth part, and the collection part.

In one embodiment, the inflow pipes may include a plurality, and the plurality of inflow pipes may be connected in parallel.

In one embodiment, the saturated portion and the growth portion may each be surrounded by a porous ceramic tube.

In one embodiment, the saturated portion has 1 on the outer wall.

to 10

A low-temperature water flow path through which low-temperature constant temperature water flows; Low-temperature water inlet; and a low-temperature water outlet.

In one embodiment, the saturation part has an internal temperature of 1

to 10

It may be maintained as .

In one embodiment, the growth portion is 30 times thicker on the outer wall.

to 60

A high-temperature water flow path through which high-temperature constant temperature water flows; hot water inlet; And it may include a hot water outlet.

In one embodiment, the growth portion has an internal temperature of 30

to 60

It may be maintained as .

In one embodiment, a moisture drain hole may be further included at the bottom of the growth portion.

In one embodiment, in the collection unit, the grown particles may be accelerated by a collection nozzle and collected on a liquid, in a liquid, or on a solid.

In one embodiment, the collecting nozzle may include three nozzles, and each nozzle may be spaced at 120° intervals along the circumference of the circle at the same distance from the center.

In one embodiment, the radius (R) of the concentric circle surrounding the three nozzles may be 1.5 mm to 10 mm.

In one embodiment, an immunoassay-based bio-aerosol detection sensor may be further included at the bottom of the collection nozzle.

In one embodiment, the grown particles may be collected on the bio-aerosol detection sensor.

In one embodiment, between the saturated portion and the growth portion; and between the growth part and the collecting part; may each be surrounded by an insulating material.

In one embodiment, the moisture condensation based airborne particle concentration-measuring device may be cylindrical.

In one embodiment, the particles may contain at least one selected from the group consisting of viruses, bacteria, fungi, spores, and other derived pathogens.

In one embodiment, the moisture condensation-based airborne particle concentration-measuring device collects bioparticles in the air at an average collection air flow rate of 0.2 m/sec to 10 m/sec and a collection air flow rate of 1 LPM to 10 LPM. It may be captured and concentrated at a concentration ratio of 5 Х 10 ³ to 2 Х 10 ⁶ .

The moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention is capable of highly concentrating airborne particles with high collection efficiency at a high collection flow rate. In addition, by minimizing the impact on particles during the collection process, viruses, bacteria, and spores in the air can be quickly (on-site) and accurately measured through immunoassay.

Figure 1 shows a cross-sectional view of a moisture condensation-based particle concentration-measuring device in air according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing a collection nozzle according to an embodiment of the present invention.

Figure 3 is a diagram showing the collection method of the moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention.

Figure 4 is (a) a size distribution graph of the final particles according to the temperature of the growth zone according to an embodiment of the present invention, and (b) a size distribution graph of the final particles measured while changing the collection flow rate from 3 LPM to 6 LPM.

Figure 5 shows the physical collection efficiency at a collection flow rate of 6 LPM calculated using the number concentration of MS2 viruses in the air measured at the inlet and outlet of the moisture condensation-based air particle concentration-measuring device according to an embodiment of the present invention. It's a graph.

Figure 6 is a graph showing the relative concentration ratio (RIVC) of the virus collected through the device compared to the initial PFU concentration before aerosolizing the virus using the moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention. .

Figure 7 shows the particle collection efficiency according to the nozzle spacing measured from 1 LPM to 6 LPM according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes can be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term.

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

Hereinafter, the moisture condensation-based air particle concentration-measuring device of the present invention will be described in detail with reference to examples and drawings. However, the present invention is not limited to these examples and drawings.

The moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention condenses moisture on the surface of incoming airborne biological particles using heat and mass transfer to increase their size, and these enlarged particles are subjected to inertial force ( speed) and completely collect/concentrate with high collection efficiency. Additionally, these concentrated biological particles can also be measured on-site through antigen-antibody reaction.

Referring to FIG. 1, the moisture condensation-based air particle concentration-measuring device 100 according to an embodiment of the present invention includes an inlet 110, a saturation section 120, a growth section 130, and a collection section ( 140).

In one embodiment, the moisture condensation-based airborne particle concentration-measuring device 100 may be generally cylindrical.

For example, the moisture condensation-based air particle concentration-measuring device 100 may have a cylindrical body in which each of the saturation section 120, the growth section 130, and the collection section 140 consists of a top surface and a side surface. Although not shown in the drawing, the entire body of the moisture condensation-based airborne particle concentration-measuring device, including the inlet section 110, saturation section 120, growth section 130, and collection section 140, is integrated. It may have a cylindrical body composed of a formed upper surface and a side surface.

In one embodiment, an inlet 110 is formed on the upper surface of the cylindrical body to penetrate the cylindrical body and introduce air into the cylindrical body.

In one embodiment, the inlet 110 includes an inlet 112; and an inflow pipe 114 through which air containing the particles flows through the inlet 110, saturation section 120, growth section 130, and collection section 140.

In one embodiment, the inlet 110 receives air containing particles, for example, bio-particles, from the outside. In one embodiment, the particles include viruses, bacteria, fungi, spores, and It may contain at least one selected from the group consisting of pathogens of other origin.

For example, the viruses include adenovirus, levivirus, enterobacteria phase MS2 (levivirus, enterobacteria phase), vaccinia virus, herpes simplex virus, and parainfluenza virus. ), rhinovirus, varicella Zoster Virus, measle virus, respiratory syncytial virus, Dengue virus, HIV (human immunodeficiency virus), influenza virus, Coronavirus (Covid-19 virus; SARS-CoV-2), common cold coronavirus (HKU1, OC43, NL63, 229E), severe acute respiratory syndrome-related coronavirus (SARS-CoV), Middle East It may include at least one selected from the group consisting of middle east respiratory syndrome coronavirus (MERS-CoV) and variant viruses of these viruses.

In one embodiment, the inflow pipe 114 has a cylindrical shape and passes through the middle of the saturation section 120, the growth section 130, and the collection section 140, forming a flow path through which particles in the air flow. It may be.

In one embodiment, the inlet pipe 114 may include a plurality.

Although only one inlet pipe is shown in the drawing, multiple inflow pipes can be connected in parallel to increase the overall flow rate.

In one embodiment, each of the saturation section 120, the growth section 130, and the collection section 140 may be cylindrical.

In one embodiment, between the saturated portion 120 and the growth portion 130; and between the growth part 130 and the collecting part 140; may be surrounded by

insulation materials

128 and 138, respectively.

In one embodiment, the saturation portion 120 and the growth portion 130 may be surrounded by porous

ceramic tubes

122 and 132, respectively.

For example, the porous ceramic tube may include at least one selected from the group consisting of titania, alumina, silica, and zeolite. Preferably, the porous ceramic tube may be a porous alumina ceramic tube.

In one embodiment, the saturation unit 120 may maintain the temperature and humidity conditions necessary for the growth of particles introduced from the inlet.

In one embodiment, the saturation unit 120 is 1 on the outer wall.

to 10

; One

to 8

; One

to 5

; One

to 3

; 3

to 10

; 3

to 8

; 3

to 5

; 5

to 10

; 5

to 8

; or 8

to 10

A low-temperature water flow path (not shown) through which low-temperature constant temperature water flows; Low-temperature water inlet (124); and a low-temperature water outlet 126.

For example, low-temperature water entering the low-temperature water inlet 124 travels around the outer wall of the saturated portion 120 through the low-temperature water flow path and is discharged through the low-temperature water outlet 126, so that it is always 1.

to 10

It may be to maintain a low temperature state.

In one embodiment, the saturation unit 120 has an internal temperature of 1

to 10

It may be maintained as .

In one embodiment, the interior of the saturation unit 120 is heated to 1 by low-temperature constant temperature water flowing to the outer wall of the saturation unit 120.

to 10

It may be maintained as .

In one embodiment, the growth section 130 may grow particles contained in the air introduced from the saturation section 120.

In one embodiment, the growth portion 130 has 30

to 60

A high-temperature water flow path (not shown) through which high-temperature constant temperature water flows; hot water inlet (134); and a hot water outlet 136.

For example, the high-temperature water entering the high-temperature water inlet 134 travels around the outer wall of the growth section 130 through the high-temperature water flow path and is discharged through the high-temperature water outlet 136, always reaching 30 degrees Celsius.

to 60

; 30

to 50

; 30

to 40

; 40

to 60

; 40

to 50

; or 50

to 60

It may be to maintain a high temperature state.

In one embodiment, the growth portion 130 has an internal temperature of 30

to 60

; 30

to 50

; 30

to 40

; 40

to 60

; 40

to 50

; or 50

to 60

It may be maintained as .

1 from the saturation unit 120

to 10

30 in the cold water inside and outside and in the growth area 130

to 60

By using warm water inside and outside, actual particle growth occurs due to rapid temperature differences.

In one embodiment, the inside of the growth part 130 is heated to 30 degrees Celsius by high temperature constant temperature water flowing to the outer wall of the growth part 130.

to 60

It may be maintained as .

In one embodiment, a moisture drain hole 139 may be further included at the bottom of the growth portion 130. Moisture condensed on the inner wall of the porous ceramic tube of the saturation section 120 and the growth section 130 may fall due to gravity and may interfere with flow or particle concentration. Therefore, a drain is formed at the bottom of the growth portion 130 to drain it.

In one embodiment, the collection unit 140 may collect particles grown from the growth unit.

In one embodiment, in the collection unit 140, particles whose size has increased due to moisture condensing on the surface are accelerated by a nozzle and collected on/into the liquid or on solids with high efficiency. At this time, the water surrounding the particles may alleviate the shock applied to the particles during the collision process, allowing the particles to be collected in an intact state.

Figure 2 is a diagram showing a collection nozzle according to an embodiment of the present invention.

In one embodiment, the collection nozzle 142 includes three nozzles, and each nozzle may be spaced at 120° intervals along the circumference of the circle at the same distance from the center.

For example, the radius (R) of a concentric circle surrounding three nozzles is 1.5 mm to 10 mm; 1.5 mm to 8 mm; 1.5 mm to 5 mm; 1.5 mm to 3 mm; 3 mm to 10 mm; 3 mm to 8 mm; 3 mm to 5 mm; 5 mm to 10 mm; 5 mm to 8 mm; 8 mm to 10 mm; It may be.

As the flow rate increases, the radius (R) of the concentric circle surrounding the three nozzles with appropriate collection efficiency increases. In other words, if the radius (R) is too small, there is a problem of poor collection due to mutual collision.

For example, the diameter (D _n ) of the nozzle is 0.1 mm to 1 mm; 0.1 mm to 0.8 mm; 0.1 mm to 0.5 mm; 0.1 mm to 0.3 mm; 0.3 mm to 1 mm; 0.3 mm to 0.8 mm; 0.3 mm to 0.5 mm; 0.5 mm to 1 mm; 0.5 mm to 0.8 mm; Or it may be 0.8 mm to 1 mm.

In one embodiment, in the collection unit 140, the grown particles may be accelerated by the collection nozzle 142 and collected on the liquid, in the liquid, or on the solid.

In Figure 3, (a) is collection on liquid (Non-immersion impingement), (b) is collection on liquid (Immersion impingement), (c) is collection on solid (Impaction), and (d) is based on immunoassay. It represents collection on the bio-aerosol detection sensor (Impaction onto sensor).

In conventional bio-aerosol collection devices, when collecting on a solid, the surface of the virus or bacteria collides/dries during the collection process, and the bio-aerosol is mainly collected on/in the liquid.

However, in the moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention, the air inside the concentration-measuring device contains a large amount of water vapor, causing drying and collision during collection as shown in (c) of FIG. 3. It can be collected even on solids by preventing damage due to damage. Viruses or bacteria collected on a solid are collected and then a concentrated solution (hydrosolization) is created by adding a small amount of liquid. Typically, this concentrated solution is transferred to a sensor to measure biological particles.

In one embodiment, an immunoassay-based detection sensor for the particles may be further included at the bottom of the collection nozzle.

In one embodiment, the detection sensor may be provided as any type of immune sensor. The collection site can be understood as the area where the antibody is applied on the detection sensor.

For example, it is possible to collect/measure bio-aerosol directly on the surface of the immunoassay-based detection sensor.

In one embodiment, the bio-aerosol detection sensor may further include an antibody that binds to particles. The antibody may be an antibody that binds to the particle. Therefore, intact collected concentrated particles can cause an antigen-antibody reaction, enabling detection using a sensor and rapid on-site measurement.

In one embodiment, the moisture condensation based airborne particle concentration-measuring device has a collection air flow rate of between 0.2 m/sec and 10 m/sec on average; 0.2 m/sec to 8 m/sec; 0.2 m/sec to 6 m/sec; 0.4 m/sec to 10 m/sec; 0.4 m/sec to 8 m/sec; Or it may be 0.6 m/sec to 10 m/sec.

The flow rate of collected air in the inlet pipe is very important in performance evaluation. The moisture condensation-based airborne particle concentration-measuring device of the present invention is capable of collecting particles even at an average flow speed of 6 m/sec (20 to 30 times higher than conventional devices). If the flow velocity is high, it is difficult for particles in the air to condense.

In one embodiment, the moisture condensation based airborne particle concentration-measuring device comprises: a collection air flow rate of 1 LPM to 10 LPM; 1 LPM to 8 LPM; 1 LPM to 5 LPM; 1 LPM to 3 LPM; 3 LPM to 10 LPM; 3 LPM to 8 LPM; 3 LPM to 5 LPM; 5 LPM to 10 LPM; 5 LPM to 8 LPM; Or, at 8 LPM to 10 LPM, bio-particles in the air may be captured and concentrated at a concentration ratio of 5 Х 10 ³ to 2 Х 10 ⁶ .

The moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention may be combined or connected to various devices applied in the technical field of the present invention, for example, an electrochemical analyzer, for detecting electrochemical signals. In addition, devices and electrodes for detecting and analyzing thermal, optical, electrical, chemical or physical detection signals may be further connected or disposed, but are not specifically mentioned in this specification.

Hereinafter, the present invention will be described in more detail through examples and comparative examples.

However, the following examples are only for illustrating the present invention, and the content of the present invention is not limited to the following examples.

[실시예][Example]

The same moisture condensation-based airborne particle concentration-measuring device as shown in Figure 1 was prepared.

The saturation section and the growth section each circulated water at a constant temperature on the outer wall of the porous ceramic tube to keep the temperature and humidity of the inner wall of the tube constant. At this time, the saturation part is 1-10

Cold water inside and outside, growing area 30-60

Using warm water inside and outside, moisture condensation occurs due to the temperature difference between the two. The size of the final particles was confirmed through experiments according to the temperature of the saturated zone and the growth zone and the air flow rate entering the inlet zone.

Concentration of particles in the air based on moisture condensation - the temperature of the saturated part of the measuring device is 5

The collection flow rate was adjusted to 3 LPM to 6 LPM, and the temperature of the growth area was 30

from 45

The measured particles were measured while changing the temperature.

Referring to Figure 4 (a), the temperature of the saturated part is 5

, with the collection flow rate fixed at 3 LPM, the temperature of the growth area was set to 30

from 45

This is a graph of the size distribution of the final particles measured while changing the size.

Referring to Figure 4 (b), the temperature of the saturated part is 5

The temperature of the growth zone is 45

This is a graph of the size distribution of the final particles measured while changing the collection flow rate from 3 LPM to 6 LPM in a fixed state.

Referring to Figures 4 (a) and (b), the final size (Count median diameter; CMD) decreased as the flow rate increased and was measured at 1.86 ㎛ at 3 L/min and 1.44 ㎛ at 6 L/min. The collection efficiency of particles that collided with the solid phase using the nozzle of the collection unit was over 90% in the range of 3-6 L/min.

In the collection unit of the moisture condensation-based air particle concentration-measuring device according to an embodiment of the present invention, particles whose size has increased due to moisture condensing on the surface are accelerated by the nozzle and collected with high efficiency on/in liquid or on solids. . The collection efficiency of particles and damage during the collection process were confirmed through experiments.

Referring to Figure 5, it can be seen that the collection efficiency is highest when collecting viruses on solids. Figure 5 shows the collection efficiency for MS2 virus in the air.

Figure 6 shows the relative concentration ratio of the virus collected through the device compared to the initial Plaque Forming Unit (PFU) concentration before aerosolizing the virus using the moisture condensation-based airborne particle concentration-measuring device according to an embodiment of the present invention. This is a graph showing Infectious Virus Concentration (RIVC).

In Figure 6, the numbers in parentheses represent the RIVC value of GVC compared to the RIVC value of SKC BioSampler, which is widely used as a representative bio-aerosol collector.

Referring to Figure 6, it can be seen that when the collection flow rate increases from 1 to 6 LPM, the relative concentration ratio of the MS2 virus collected at 6 LPM is the highest. In other words, when the collection flow rate is 6 LPM, the concentration of the collected liquid is highest. And in this case, the concentration is about 60 times that of the solution collected with the SKC BioSampler.

Referring to FIG. 7, regarding the radius R of the nozzle concentric circle, the center-nozzle distance was adjusted in the range of 1-3 mm, and as the gap between nozzles narrowed, the particle collection efficiency tended to decrease. At a collection flow rate of 6 L/min, the collection efficiency is about 90% when the center-nozzle distance is 3.5 mm, and about 80% when it is 1.5 mm.

Through this, it was confirmed that when multiple pipes through which airborne particles flow are used in parallel, that is, when multiple nozzles are used, the total flow rate and concentration ratio can be increased without reducing collection efficiency.

Although the embodiments have been described with limited drawings as described above, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the following claims.

Claims

An inlet where air containing particles flows in from the outside;

a saturation section that maintains the temperature and humidity conditions necessary for the growth of particles introduced from the inlet section;

a growth section that grows particles contained in the air introduced from the saturation section; and

A collection unit that collects particles grown from the growth unit;

Including,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The inlet part,

inlet; and

an inflow pipe through which air containing particles flows through the inflow section, saturation section, growth section, and collection section;

which includes,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 2,

The inlet pipe includes a plurality of

The plurality of inlet pipes are connected in parallel,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The saturated portion and the growth portion are each surrounded by a porous ceramic tube,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The saturated portion has 1 on the outer wall.
to 10
A low-temperature water flow path through which low-temperature constant temperature water flows;

Low-temperature water inlet; and

cold water outlet;

which includes,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The saturated part has an internal temperature of 1
to 10
which is maintained as,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The growth part,

30 on the exterior wall
to 60
A high-temperature water flow path through which high-temperature constant temperature water flows;

hot water inlet; and

hot water outlet;

which includes,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The growth part has an internal temperature of 30
to 60
which is maintained as,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

A moisture drain hole at the bottom of the growth part;

Containing more,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The collection unit,

The grown particles are accelerated by a collection nozzle and collected on, in, or on a liquid,

Airborne particle concentration-measuring device based on moisture condensation.
According to clause 10,

The collection nozzle includes three nozzles,

Each nozzle is spaced at 120° intervals along the circumference of the circle at equal distances from the center,

Airborne particle concentration-measuring device based on moisture condensation.
According to clause 10,

The radius (R) of the concentric circle surrounding the three nozzles is 1.5 mm to 10 mm,

Airborne particle concentration-measuring device based on moisture condensation.
According to clause 10,

An immunoassay-based bio-aerosol detection sensor at the bottom of the collection nozzle;

Containing more,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

between the saturated portion and the growth portion; and

Between the growth part and the collecting part;

is the insulation part;

Containing more,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The moisture condensation-based airborne particle concentration-measuring device is cylindrical,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The particles include at least one selected from the group consisting of viruses, bacteria, fungi, spores and other derived pathogens,

Airborne particle concentration-measuring device based on moisture condensation.
According to paragraph 1,

The moisture condensation-based airborne particle concentration-measuring device,

The collected air flow rate is on average 0.2 m/sec to 10 m/sec,

At a collection air flow rate of 1 LPM to 10 LPM, bio particles in the air are captured and concentrated at a concentration ratio of 5 Х 10 3 to 2 Х 10 6 ,

Airborne particle concentration-measuring device based on moisture condensation.