KR20220091998A - Fine dust measuring device of light scattering - Google Patents

Abstract

A fine dust measuring device using light scattering according to a first embodiment of the present invention comprises: a chamber; a damper provided in the upper part of the chamber and configured to introduce the train wind including fine dust and foreign substances having particles larger than the fine dust or to block the inflow of the train wind, and removing the foreign substances while introducing the train wind; a centrifugal force dust collector provided inside the chamber and screwing down the train wind passing through the damper to separate the fine dust from the train wind using a centrifugal force; a collector provided below the centrifugal force dust collector, the collecting surface of a collecting means for collecting fine dust falling downward from the centrifugal force dust collector after being separated from the train wind being disposed to face the lower part of the centrifugal force dust collector; a light scattering measuring instrument for, when part of the fine dust falling downward toward the collecting surface is introduced together with the train wind discharged to the lower side of the centrifugal force dust collector, measuring the concentration of the part of the fine dust based on the scattered light of the train wind including the part of the fine dust; and a collector rotating unit including a rotational axis for rotating the collecting surface and a motor for driving the rotational axis so as to drop the fine dust, which has been collected on the collecting surface, downward to the bottom of the chamber. Therefore, provided is a fine dust measuring device using light scattering, wherein the reliability of the process of measuring the concentration of fine dust can be improved.

Description

Light scattering type fine dust measuring device {Fine dust measuring device of light scattering}

The present invention relates to a light scattering type fine dust measuring apparatus, and more particularly, to an apparatus for measuring the concentration of fine dust in a train wind based on a light scattering method.

Recently, air pollution has become more serious due to the influence of fine dust and the like. In some cases, it is difficult to even breathe smoothly in urban areas due to periodically repeated yellow dust, various fine dust, smog, etc., and dust particles distributed in the atmosphere scatter sunlight and blur the view. When such fine dust is inhaled into the human body as it is, it can penetrate into the alveoli and cause various lung and respiratory diseases.

Various types of measuring equipment have been developed to determine the concentration of these dust particles and to monitor air pollution. A representative of these measuring devices is a light scattering measuring device that measures the concentration of fine dust contained in a sample gas using laser light and scattering of fine dust.

Such a light scattering measuring device is disclosed in Korean Patent No. 10-1881135 (hereinafter 'Prior Art 1'), Korean Patent Registration No. 10-1966492 (hereinafter 'Prior Art 2'), and Korean Patent Publication No. 10-2019-0019747 ( Hereinafter, it has been disclosed in 'Prior Art 3').

Prior art 1 is based on a light scattering method, and is a light scattering-based dust sensor that measures the amount of dust by using a dust sensor that measures scattered light scattered by dust among light irradiated from a light emitting unit. When the intensity of the direct light output by directly receiving the direct light irradiated from the light emitting unit is different from a preset value, the value related to the size of the scattered light output by the dust sensor using the difference value can be corrected

Prior art 2 relates to a dust sensor for a vehicle, comprising: a case having an interior space; a light source unit installed in the inner space of the case to irradiate light to an air passage through which air and dust are introduced and passed; a condensing lens irradiated from the light source unit and condensing the light scattered by dust in the air in the air passage; a light receiving unit receiving the scattered light condensed by the condensing lens and outputting an electrical signal corresponding to the dust concentration; and an inner housing installed in the inner space of the case to form the air passage, and to improve sensor performance degradation or malfunction due to dust accumulation in the case, lens contamination, and disturbance light flowing from the outside. can

Prior Art 3 is a light emitting unit emitting incident light traveling in a first direction, a light receiving unit spaced apart from the light emitting unit in a second direction crossing the first direction, a scattering area provided between the light receiving unit and the light emitting unit, and disposed in the scattering area It is configured to include an additional module fixing unit.

The prior arts 1 to 3 can measure the concentration value of fine dust based on the light scattering method. However, when measuring the fine dust concentration value from the high-velocity train wind, the fine-dust concentration value is accurately measured by the high flow velocity of the train wind. It is difficult to do this, and as the train wind contains not only fine dust but also large particles of foreign matter (eg, iron powder, etc.), there is a problem in that the reliability of measuring the concentration of fine dust in the train wind is lowered.

Korean Patent No. 10-1881135 Korean Patent No. 10-1966492 Korean Patent Publication No. 10-2019-0019747

The present invention has been devised to solve the above problems, and it is possible to accurately measure the concentration value of fine dust in the train wind in a light scattering method by reducing the flow rate of the train wind and removing foreign substances contained in the train wind, and through this, fine dust An object of the present invention is to provide a light scattering type fine dust measuring device capable of improving the reliability of the process of measuring the concentration.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

A light scattering type fine dust measuring apparatus according to a first embodiment of the present invention for achieving the above object includes: a chamber; a damper provided in the upper part of the chamber and configured to introduce fine dust and foreign substances having particles larger than the fine dust inflow or block the inflow of the train wind, and remove the foreign substances when the train wind is introduced; a centrifugal force dust collector provided inside the chamber and screwing down the train wind passing through the damper to separate the fine dust from the train wind by centrifugal force; a collector provided under the centrifugal force dust collector, the collecting surface of the collecting means for collecting fine dust falling downward from the centrifugal force dust collector after being separated from the train wind is disposed to face the lower part of the centrifugal force dust collector; When some of the fine dust falling downward toward the collection surface is introduced together with the train wind discharged to the lower side of the centrifugal force dust collector, the concentration of the partial fine dust is measured based on the scattered light of the train wind including the partial fine dust a light scattering meter; and a collector rotating unit having a rotation shaft for rotating the collection surface and a motor for driving the rotation shaft in order to drop the fine dust collected on the collection surface downward to the bottom of the chamber.

In addition, a light scattering type fine dust measuring apparatus according to a second embodiment of the present invention includes: a chamber; A train wind inlet connected to the chamber and configured to allow a train wind containing fine dust and foreign substances having particles larger than the fine dust to flow in one direction and/or the other direction is provided, and the train wind introduced through the train wind inlet is screwed downward. a centrifugal force dust collector to remove the foreign material from the train wind by centrifugal force, and upwardly screw the foreign material removed from the train wind; a storage unit provided inside the chamber and connected to the centrifugal force dust collector to store the train wind from which the foreign material has been removed; a collector provided at the lower side of the storage unit, the collecting surface of the collecting means for collecting fine dust included in the train wind falling downward from the lower side of the storage unit is disposed to face the lower part of the storage unit; When some of the fine dust falling downward toward the collection surface is introduced together with the train wind discharged to the lower side of the storage unit, the concentration of the partial fine dust is measured based on the scattered light of the train wind including the partial fine dust light scattering meter; and a collector rotating unit having a rotation shaft for rotating the collection surface and a motor for driving the rotation shaft in order to drop the fine dust collected on the collection surface downward to the bottom of the chamber.

And the light scattering meter, the main body; an inlet pipe connected to the main body and passing through one or more through-holes formed in the collecting means so that the train wind including the partial fine dust flows into the main body; an exhaust pipe connected to the main body and discharging the train wind including some fine dust whose concentration has been measured; a light emitting unit irradiating a laser beam toward the train wind including some fine dust introduced into the body; a detector for detecting scattered light scattered from the train wind including some fine dust by the laser light; a measuring unit measuring a concentration value of some fine dust by analyzing the scattered light detected by the detecting unit; and a mirror unit detachably attached to the mirror groove of the main body to reflect the scattered light toward the detection unit.

In addition, when the concentration measurement of the partial fine dust from the light scattering meter is completed, the collector rotating unit rotates the collecting surface so that the fine dust falling downward from the collecting surface is discharged through the fine dust outlet formed at the bottom of the chamber. can be induced.

In addition, the damper may have upper and lower portions open for inflow and flow of train wind, and a plurality of train wind inlets having a lower width in the form of a truncated cone greater than that of the upper portion may be stacked.

In addition, in the plurality of train wind inlets, the upper part of the uppermost train wind inlet part and the lower part of the lowermost train wind inlet part are closed, and the remaining train wind inlets except for the uppermost train wind inlet part increase the train wind when the train wind collides with the outer periphery of the side. Inducing the train wind to flow into the lower part of the train wind inlet except for the lowermost train wind inlet part, and the train wind flowing in from the lower part except for the lowermost train wind inlet part collides with the inner periphery of the side train wind. It can be moved to induce the train wind to flow toward the centrifugal force collector.

In addition, the plurality of train wind inlets may be provided with a mesh filter on top of the remaining train wind inlets except for the uppermost train wind inlet to remove the foreign substances from the train wind.

In addition, the centrifugal force dust collector, is provided on the lower side of the damper, the train wind turning part for rotating the plurality of blades inclined at an angle for screwing the train wind discharged to the lower side of the damper downward; and the lower part of the train wind turning part, the upper part and the lower part being opened, and the width of the lower part is the width of the upper part so that fine dust separated from the train wind screwing downward while passing through the train wind turning part falls downwardly toward the collector along the inner wall. It may include; a hopper formed smaller.

The present invention can accurately measure the fine dust concentration value in the train wind in a light scattering method by reducing the flow rate of the train wind and removing foreign substances included in the train wind.

In addition, the present invention can accurately measure the fine dust concentration value in the train wind, so that the reliability of the process of measuring the fine dust concentration in the train wind can be improved.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

1 is a conceptual diagram of a light scattering type fine dust measuring device according to a first embodiment of the present invention.
FIG. 2 is an explanatory view for explaining a train wind inflow and flow method of the damper shown in FIG. 1 .
3 is a cross-sectional view taken along line A-A' of FIG. 1 .
4 is a perspective view of the light scattering meter shown in FIG. 1 .
FIG. 5 is an explanatory view for explaining a method of attaching and detaching a mirror unit provided in the light scattering measuring device shown in FIG. 4 .
6 is an explanatory view for explaining a rotating method of collecting means of the rotating unit of the collector shown in FIG. 1 .
7 is a conceptual diagram of a light scattering type fine dust measuring device according to a second embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment is capable of various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprise" or "have" are not intended to refer to the specified feature, number, step, action, component, part or any of them. It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, the light scattering type fine dust measuring device 1 of the first embodiment will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the light scattering type fine dust measuring device 1 of the first embodiment has a chamber 10 and a damper 20 to measure the fine dust concentration in the train wind based on a light scattering method. , a centrifugal force dust collector 30 , a collector 40 , a light scattering meter 50 and a collector rotating unit 60 .

The chamber 10 is installed around the railway on which the train runs so that the train wind containing fine dust and foreign substances (eg, iron powder, etc.) larger than the fine dust flows into the damper 20 .

The damper 20 is provided on the upper portion of the chamber 10 so that the train wind flows into the chamber 10, and blocks the inflow of the train wind or the inflow of the train wind, but when introducing the train wind, foreign substances contained in the train wind are removed. .

The damper 20 may be formed of a plurality of train wind inlets to allow the inflow of the train wind and the train wind to flow toward the centrifugal force dust collector 30 .

At this time, the plurality of train wind inlet parts are stacked upward as shown in FIG. 2 , and as a specific example, the uppermost first train wind inlet 21 , the upper part is the lower part of the first train wind inlet 21 . It may be composed of a second train wind inlet 22 coupled to and a lowermost third train wind inlet 23 having an upper portion coupled to a lower portion of the second train wind inlet 22 .

The plurality of train wind inlets is not limited to the first, second, and third train wind inlets 21, 22, and 23 as described above, and may include a greater or fewer number of train wind inlets. However, hereinafter, it will be described that the plurality of train wind inlet is the first, second, and third train wind inlet (21, 22, 23).

The first, second, and third train wind inlets 21, 22, and 23 have upper and lower portions open so that the train wind is introduced, and the upper portion of the first train wind inlet 21 and the lower portion of the third train wind inlet 23 are is closed

These first, second, and third train wind inlets 21 , 22 , 23 allow the train wind to flow in 360°, and at the same time so that the train wind introduced into the inside flows toward the centrifugal force dust collector 30 due to the reflection action due to the collision. In order to do so, the width of the lower part is made in the shape of a truncated cone larger than the width of the upper part.

The train wind inflow and flow methods of the 1, 2, and 3 train wind inlets 21, 22, and 23 using a truncated cone shape are as shown in FIG.

Referring to (a) of FIG. 2 , the second train wind inlet 22 moves upward when the train wind collides with the outer periphery of the side to induce it to flow into the lower part of the first train wind inlet 21 . In addition, the third train wind inlet 23 may induce the train wind to move upward when the outer periphery of the side collides with the train wind to flow into the lower portion of the second train wind inlet 22 .

In addition, referring to FIG. 2 (b), the first train wind inlet 21 moves the train wind in a lateral direction when the inner periphery of the side collides with the train wind flowing in from the lower portion so that the train wind is transferred to the second train wind inlet 22 It can be induced to flow toward the upper part of the, and the second train wind inlet 22 moves the train wind laterally when the inner periphery of the side collides with the train wind flowing in from the lower part so that the train wind is generated by the third train wind inlet 23 of It can be induced to flow upward, and the train wind flowing into the upper part of the third train wind inlet 23 passes through the lower part of the third train wind inlet 23 and flows into the chamber 10, after which the centrifugal force dust collector 30 ) can flow toward

As the first, second, and third train wind inlets 21 , 22 , and 23 collide with the high-velocity train wind, it is possible to reduce the flow velocity of the train wind before flowing toward the centrifugal force dust collector 30 .

And the first, second, and third train wind inlets (21, 22, 23), the second and third train wind inlets (22, 23) of which the upper part is provided with a mesh filter (22a, 23a) on the upper part is included in the train wind Removes foreign substances with particles larger than the fine dust.

The centrifugal force dust collector 30 is provided inside the chamber 10 so as to be disposed below the third train wind inlet 23 as shown in FIG. 1 , and passes through the third train wind inlet 23 using centrifugal force. In order to separate fine dust from the train wind, a train wind turning part 31 and a hopper 32 are provided.

The train wind turning part 31 is provided on the lower side of the third train wind inlet 23, and as shown in FIG. 3 , a plurality of train winds discharged from the lower side of the third train wind inlet 23 are screwed downwardly. A wing 31a is provided.

The plurality of blades 31a is preferably inclined at a predetermined angle as shown in FIG. 1 in order to screw the train wind discharged from the lower side of the third train wind inlet 23 downward.

The hopper 32 is provided at the lower side of the train wind turning part 31 so that the train wind screwed downward by the plurality of blades 31a flows in, the upper part is opened, and fine dust and fine dust separated from the train wind by the downward screw movement The lower part is opened so that the dust-separated train wind is discharged from the inside.

The width of the lower part of the hopper 32 is smaller than the width of the upper part so that the fine dust separated from the train wind falls downwardly toward the collector 40 along the inner wall.

The collector 40 is provided inside the chamber 10 to be disposed under the hopper 32 as shown in FIG. 1 , and collects fine dust discharged from the lower part of the hopper 32 and falling downward to collect it. means (41).

The collecting means 41 is a collecting surface 41a attached to one side of both surfaces with nanofibers capable of collecting fine dust, and the collecting surface 41a is fine dust from the lower part of the hopper 32 to collect fine dust. It is preferable to face the lower portion of the hopper 32 during the downward fall.

The light scattering meter 50 is based on the scattered light of the train wind containing some fine dust when some of the fine dust falling downward toward the collecting surface 41a is introduced together with the train wind discharged from the lower side of the hopper 32 In order to measure the concentration of some fine dust, as shown in FIGS. 4 to 5, the inlet pipe 51, the body 52, the outlet pipe 53, the light emitting part 54, the detection part 55, the measuring part ( 56) and a mirror unit 57 .

The inlet pipe 51 is connected to one side of the main body 52 and passes through one or more through-holes 41b formed in the collecting means 41 so that the train wind including some fine dust flows into the main body 52 .

The main body 52 is provided with an inlet pipe 51 on one side so that the train wind containing some fine dust flows into the inside, and the mirror grooves 52a and 52b are respectively provided on the upper side and the other side so that the mirror unit 57 is fitted. is formed

The discharge pipe 53 is connected to the other side of the main body 52 , and exhausts the train wind including some fine dust whose concentration value of fine dust has been measured through the measuring unit 56 from the inside of the main body 52 to the outside.

The light emitting unit 54 is composed of a laser emitting unit and a focusing unit to generate a laser light 54a, and a laser light 54a in a direction perpendicular to the flow direction of the train wind flowing into the inside of the main body 52 by the inlet pipe 51. It is provided on the side of the body 52 to irradiate.

Such a light emitting unit 54, for example, may irradiate a laser beam 54a having a wavelength of 809 nm toward a train wind containing some fine dust.

The detection unit 55 is provided in the second mirror 57b of the mirror unit 57 to detect scattered light scattered by the laser light 54a and some fine dust floating in the train wind, and transmits the intensity of the received scattered light as an electrical signal. convert to

The measuring unit 56 is provided in the second mirror 57b, and the detection unit 55 analyzes the scattered light converted into an electrical signal using the principle of the light scattering method, and the concentration of some fine dust based on the analysis result of the scattered light Measure the value.

Here, the principle of the light scattering method is to determine the particle size with the sparkling size of the particles when scattered light is generated, and to measure the number of particles by size by counting the number of sparkling particles.

In addition, the fine dust measurement principle of the light scattering method is the light scattering method, which measures the fine particles of some fine dust, and then displays the mass of some fine dust through weight quantification for each size. In this case, some fine dust may have particles of 10 micrometers or less.

That is, the detection unit 55 of the present invention detects scattered light of fine dust floating in the train wind based on the principle of the light scattering method described above, and the measurement unit 56 detects it by the detection unit 55 based on the principle of the light scattering method By analyzing the scattered light, it is possible to measure the concentration value of some fine dust.

The mirror unit 57 includes a first mirror 57a and a second mirror 57b detachable from the main body 52 to reflect the laser light 54a.

The first mirror 57a is detachably assembled in the mirror groove 52a formed on the upper side of the main body 52 to reflect the scattered light.

The second mirror 57b is detachably assembled in the mirror groove 52b formed on the lower side of the main body 52 to reflect the scattered light.

A detection unit 55 and a measurement unit 56 are attached to at least one of the first mirror 57a and the second mirror 57b.

Accordingly, the detection unit 55 detects the scattered light reflected by the mirror unit 57 after being scattered by the train wind including some fine dust.

The collector rotating unit 60 is configured to collect fine dust on the collecting surface 41a or to drop the fine dust collected on the collecting surface 41a downward to the floor of the chamber 10 in FIGS. 6 (a) and (b). ) as shown in the rotation shaft 61 and the motor 62 is provided.

The rotating shaft 61 rotates the collecting means 41 in a state coupled to the coupling part 41d provided on the other surface 41c opposite to one surface of the collecting means 41 provided with the collecting surface 41a.

The rotation shaft 61 is preferably coupled to the coupling portion 41d so that the inlet pipe 51 may pass through one or more through-holes 41b so as not to overlap the through-holes 41b.

The motor 62 is connected to the rotation shaft 61 to drive the rotation shaft 61, and through the driving of the rotation shaft 61, the light scattering meter 50 measures the concentration value of some fine dust while the collecting surface 41a is Rotate to face the lower part of the hopper 32, and when the measurement of the concentration value of some fine dust from the light scattering meter 50 is completed, the collecting surface 41a faces the bottom of the chamber 10 so that the fine dust falls downward rotate as much as possible.

At this time, the fine dust falling downward from the collecting surface 41a may be discharged to the outside through the fine dust outlet 11 formed at the bottom of the chamber 10 .

Hereinafter, the light scattering fine dust measuring device 2 of the second embodiment will be described in detail with a focus on the configuration that does not overlap with the light scattering fine dust measuring device 1 of the first embodiment.

Referring to FIG. 7 , in the light scattering fine dust measuring device 2 of the second embodiment, a centrifugal force dust collector 30 is provided to remove foreign substances included in the train wind, and the centrifugal force dust collector 30 includes a hopper 32 and train wind. It has an inlet (33).

The hopper 32 makes a downward screw motion of the train wind introduced into the inside through the train wind inlet 33 so that foreign substances are separated from the train wind by centrifugal force, and then discharges the foreign substances to the outside through the open lower part, where the foreign substances are separated. The train wind is screwed upward.

The train wind inlet 33 is coupled to the upper portion of the hopper 32 so that the train wind flows into the hopper 32, and the inlets 33a and 33b in one direction and the other direction to allow the train wind to flow in one direction and/or the other direction. ) is formed.

The light scattering fine dust measuring device 2 of the second embodiment includes a connection pipe 70 and a storage unit 80 as shown in FIG. 7 .

The connection pipe 70 connects the upper part of the hopper 32 and the upper part of the storage part 80 so that the train wind from which the foreign substances screwed upward in the hopper 32 flows toward the storage part 80. .

The storage unit 80 is provided in the upper part of the chamber 10, and stores the train wind in which foreign substances flowing along the connection pipe 70 are separated after being discharged from the upper part of the hopper 32, and the upper part for storing the train wind and the lower part is opened and closed.

As a specific example, the storage unit 80 opens the upper part while the train wind flows along the connecting pipe 70, but closes the lower part, and stores the train wind when the inflow of the train wind flowing along the connecting pipe 70 ends. The upper and lower parts are closed for this purpose, and the upper part is closed when the stored train wind is discharged, but the lower part can be opened.

This storage unit 80 stores the train wind in which foreign substances are separated at a high flow rate and then discharges them toward the collector 40, so that the foreign substances are separated before the train wind in which the foreign substances are separated flows toward the collector 40. The flow velocity of the train wind can reduce

The collector 40 is provided inside the chamber 10 so as to be provided on the lower side of the storage unit 40 , and the train wind discharged through the open lower side of the storage unit 80 when the lower portion of the storage unit 80 is opened. A collecting means 41 is provided to collect fine dust falling downward together with the . Since the fine dust collection method of the collector 40 is the same as that of the collector 40 of the first embodiment, a description thereof will be omitted.

The light scattering meter 50 measures the concentration value of some fine dust from the train wind containing some fine dust not collected by the collector 40, and the method of measuring the fine dust concentration value of this light scattering meter 50 is the first implementation Since it is the same as the light scattering meter 50 of the example, a description thereof will be omitted.

The collector rotating unit 60 rotates the collecting unit 41 so that the fine dust collected by the collecting unit 41 falls downward toward the bottom of the chamber 10 . Since the rotation method of the collector means 41 of the collector rotating unit 60 is the same as the collector rotating unit 60 of the first embodiment, a description thereof will be omitted.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a way in combination with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

1, 2: Light scattering type fine dust measuring device, 10: Chamber,
11: fine dust outlet, 20: damper,
21: a first train wind inlet, 22: a second train wind inlet,
23: third train wind inlet, 30: centrifugal force dust collector,
31: train wind turning part, 31a: wing,
32: hopper, 33: train wind inlet,
33a, 33b: inlet, 40: collector,
41: collection means, 41a: collection surface,
41b: through hole, 41c: riding surface,
41d: coupling part, 50: light scattering meter,
51: inlet pipe, 52: body,
53: discharge pipe, 54: light emitting part,
54a: laser light, 55: detection unit,
56: measurement unit, 57: mirror unit;
57a: first mirror, 57b: second mirror;
60: collector rotating part, 61: rotating shaft,
62: motor, 70: connector,
80: storage.

Claims (8)

In the light scattering type fine dust measuring device of the first embodiment,
chamber;
a damper provided in the upper part of the chamber and configured to introduce fine dust and foreign substances having particles larger than the fine dust inflow or block the inflow of the train wind, and remove the foreign substances when the train wind is introduced;
a centrifugal force dust collector provided inside the chamber and screwing down the train wind passing through the damper to separate the fine dust from the train wind by centrifugal force;
a collector provided under the centrifugal force dust collector, the collecting surface of the collecting means for collecting fine dust falling downward from the centrifugal force dust collector after being separated from the train wind is disposed to face the lower part of the centrifugal force dust collector;
When some of the fine dust falling downward toward the collection surface is introduced together with the train wind discharged to the lower side of the centrifugal force dust collector, the concentration of the partial fine dust is measured based on the scattered light of the train wind including the partial fine dust light scattering meter; and
Light scattering type fine dust comprising a; a rotating shaft for rotating the collecting surface and a motor for driving the rotating shaft in order to drop the fine dust collected on the collecting surface downward to the bottom of the chamber measuring device. In the light scattering type fine dust measuring device of the second embodiment,
chamber;
A train wind inlet connected to the chamber and configured to allow a train wind containing fine dust and foreign substances having particles larger than the fine dust to flow in one direction and/or the other direction is provided, and the train wind introduced through the train wind inlet is screwed downward. a centrifugal force dust collector to remove the foreign material from the train wind by centrifugal force, and upwardly screw the foreign material removed from the train wind;
a storage unit provided in the chamber and connected to the centrifugal force dust collector to store the train wind from which the foreign material has been removed;
a collector provided at the lower side of the storage unit, the collecting surface of the collecting means for collecting fine dust included in the train wind falling downward from the lower side of the storage unit is disposed to face the lower part of the storage unit;
When some of the fine dust falling downward toward the collecting surface is introduced together with the train wind discharged to the lower side of the storage unit, the concentration of the partial fine dust is measured based on the scattered light of the train wind including the partial fine dust light scattering meter; and
Light scattering type fine dust comprising a; a rotating shaft for rotating the collecting surface and a motor for driving the rotating shaft in order to drop the fine dust collected on the collecting surface downward to the bottom of the chamber measuring device. 3. The method of claim 1 or 2,
The light scattering meter,
main body;
an inlet pipe connected to the main body and passing through one or more through-holes formed in the collecting means so that the train wind including the partial fine dust flows into the main body;
an exhaust pipe connected to the body and discharging the train wind including some fine dust for which the concentration measurement has been completed;
a light emitting unit irradiating a laser light toward the train wind including some fine dust introduced into the body;
a detection unit detecting scattered light scattered from the train wind including some fine dust by the laser light;
a measuring unit measuring a concentration value of some fine dust by analyzing the scattered light detected by the detecting unit; and
and a mirror unit detachably attached to the mirror groove of the main body and reflecting the scattered light toward the detection unit. 3. The method of claim 1 or 2,
The collector rotating part,
When the concentration measurement of the part of the fine dust from the light scattering meter is completed, the collecting surface is rotated to induce the fine dust falling downward from the collecting surface to be discharged through the fine dust outlet formed at the bottom of the chamber. Light scattering type fine dust measuring device. The method of claim 1,
The damper is
A light scattering type fine dust measuring device, characterized in that the upper and lower portions are opened for inflow and flow of the train wind, and a plurality of train wind inlets in the form of a truncated cone having a lower width greater than the upper width are stacked. 6. The method of claim 5,
The plurality of train wind inlets,
The upper part of the uppermost train wind inlet part and the lower part of the lowest train wind inlet part are closed,
When the train wind inlet part other than the uppermost train wind inlet part collides with the outer periphery of the side part, the train wind moves upward to induce the train wind to flow into the lower part of the train wind inlet part except for the lowermost train wind inlet part,
Light scattering-type fine dust measurement, characterized in that the remaining train wind inlets, except for the lowermost train wind inlet, cause the train wind to flow toward the centrifugal force dust collector by lateral movement when the train wind flowing in from the bottom collides with the inner periphery of the side. Device. 7. The method of claim 6,
The plurality of train wind inlets,
A light scattering type fine dust measuring device, characterized in that a mesh filter is provided on the upper portion of the remaining train wind inlet except for the uppermost train wind inlet to remove the foreign material from the train wind. The method of claim 1,
The centrifugal force dust collector,
a train wind turning unit provided under the damper and rotating a plurality of blades inclined at an angle for downward screw motion of the train wind discharged to the lower side of the damper; and
It is provided on the lower side of the train wind turning part, and the upper and lower parts are open, and the width of the lower part is greater than the width of the upper part so that fine dust separated from the train wind screwed downward while passing through the train wind turns part falls downwardly toward the collector along the inner wall. Light scattering type fine dust measuring device comprising a; hopper formed small.

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