KR101557848B1

KR101557848B1 - Measuring apparatus of Particulate Matter for airconditioner

Info

Publication number: KR101557848B1
Application number: KR1020150088850A
Authority: KR
Inventors: 김태원; 김희용
Original assignee: (주)삼원씨앤지
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2015-10-06

Abstract

The present invention relates to a fine dust concentration measuring apparatus for an air conditioner installed in an air circulation path of an air conditioner and measuring the concentration of dust contained in air discharged to the outside through an air circulation path, A light emitting member which emits light for measurement, which is contained in the inner space of the housing, and a light emitting member which emits light for measurement after being emitted from the light emitting member, A light receiving member for sensing the scattered light, an air blowing member for drawing the air to be measured into the inner space of the housing, and periodically spraying compressed air to the inner space of the housing to discharge the accumulated dust to the outside of the inner space And an air injection member for ensuring an accurate concentration of dust contained in the air to be measured contained in the internal space Relates to a fine dust concentration measuring apparatus for an air conditioning system.
Also, since the high-pressure compressed air generated by the air injection member can be periodically injected into the internal space of the housing, dust contained in the air flowing in the internal space can be prevented from accumulating in the internal space, It is possible to obtain the effect of removing the dust.

Description

[0001] The present invention relates to a measuring apparatus for measuring a concentration of air,

The present invention relates to a fine dust concentration measuring apparatus for an air conditioner installed in an air circulation path of an air conditioner and measuring the concentration of dust contained in air discharged to the outside through an air circulation path, A light emitting member which emits light for measurement, which is contained in the inner space of the housing, and a light emitting member which emits light for measurement after being emitted from the light emitting member, A light receiving member for sensing the scattered light, an air blowing member for drawing the air to be measured into the inner space of the housing, and periodically spraying compressed air to the inner space of the housing to discharge the accumulated dust to the outside of the inner space And an air injection member for ensuring an accurate concentration of dust contained in the air to be measured contained in the internal space Relates to a fine dust concentration measuring apparatus for an air conditioning system.

Conventional methods of detecting the concentration and size of dust include a method using light scattering, a gas sensing method, and a method using friction electricity.

In the method using light scattering, when the light of the light source body (for example, LED) is irradiated to the illumination area through the lens, the dust particles rise by the heat generated by the heater located under the sensor, As it passes through the area, light scatters in proportion to the size of the dust.

The light receiving part also receives light scattered by the dust particles through the lens and generates scattered light pulses proportional to the intensity of the received scattered light.

The method of detecting the density of the dust through the count number of the generated scattered light pulses has a simple structure. However, it is difficult to distinguish the size of the dust and to detect the size of the dust, There is a drawback that this is expensive.

In addition, the gas detection system reacts to the gas components contained in the dust. However, the structure is simple, but the size of the dust can not be distinguished, and pollen, house dust,

The triboelectric type is a method in which the probe type sensor measures the concentration of dust by charging the triboelectricity by the dust present in the air flow, and this method is also difficult to distinguish the size of the dust, Additional correction sensors are needed due to possible errors.

The following is a representative prior art relating to a dust concentration measuring apparatus.

Korean Patent Registration No. 10-0539310 relates to an optical dust sensor having a self-sensitivity correcting function and a sensitivity deviation adjusting function, and is capable of realizing a change in the amount of incident light due to a change in the light quantity of the LED constituting the dust sensor and the contamination of the lens in real time In this paper, we propose a self - diagnosis type optical dust sensor which can keep the output value of the dust sensor at the same time by algorithmically correcting the factors that decrease the sensitivity of the dust sensor.

In addition, the above-mentioned prior art self-corrects the change in the sensitivity of the light receiving sensor due to the change in the lifetime of the light emitting portion constituting the optical portion and the contamination of the lens during use, thereby giving the same output value at all times. However, the problem of the physical sensitivity reduction caused by accumulated dust inside the ovipositor tube can not be substantially eliminated. Therefore, there is a need for continuous research and development for solving the problem.

1. Korean Registered Patent No. 10-0539310 (December 21, 2005) 2. Korean Patent Publication No. 10-2005-0072359 (July 11, 2005) 3. Korean Patent Publication No. 10-2005-0060481 (June 22, 2005) 4. Korean Patent Registration No. 10-1096156 (December 13, 2011)

The present invention relates to a dust concentration measuring apparatus for an air conditioner, and a dust concentration measuring apparatus provided in a conventional air conditioning apparatus, the dust concentration measuring apparatus comprising: There is a problem that the concentration of the dust contained in the air existing in the internal space and the concentration of the dust contained in the air circulation path of the air conditioner are changed;

A problem has arisen that the measured dust concentration results in a measured value larger than the actual dust concentration;

When the dust accumulates in the internal space for a long period of time, there is a problem that the inside of the internal space needs to be cleaned by disassembling the dust concentration measuring apparatus, or various parts provided in the internal space are damaged by accumulated dust, And to provide a solution to this problem.

The present invention has been made to solve the above-

A tubular housing in which an inlet for receiving air to be measured containing dust particles on one side is formed and an outlet for discharging air to be measured is formed on the other side and an inner space is formed; A light emitting member provided on one side of the inner space of the housing to emit light; A light receiving unit provided on the other side of the inner space of the housing to sense light scattered through the inner space after being emitted from the light emitting member; An air blowing member provided at an inlet of the housing; And an air injection member formed at one side of the housing and injecting compressed air into the internal space through an inlet communicating with the internal space.

In the apparatus for measuring fine dust concentration for an air conditioning system according to the present invention as described above, since the high-pressure compressed air generated by the air injection member can be periodically injected into the internal space of the housing, It is possible to prevent accumulation of dust in the inner space and to remove accumulated dusts;

As a result, it is possible to obtain an effect that the concentration of the dust contained in the air contained in the inner space and the concentration of the dust contained in the air in the air circulation path of the air unit can be matched;

Since there is no accumulation of dust in the internal space, the measured dust concentration can be matched with the actual dust concentration;

Since dust is not accumulated in the internal space, it is possible to obtain an effect that water repellency for removing cumulative dust is unnecessary.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an apparatus for measuring fine dust concentration for an air conditioning system according to a preferred embodiment of the present invention. FIG.
2 is a cross-sectional view showing a case where a protrusion is provided on a housing of a fine dust concentration measurement apparatus for an air conditioning system according to a preferred embodiment of the present invention.
3 is a cross-sectional view illustrating a case where a conductive material is coated on a housing of a fine dust concentration measurement apparatus for an air conditioning system according to a preferred embodiment of the present invention.
4 is an exploded perspective view showing a diffusion nozzle of an apparatus for measuring fine dust concentration for air conditioning equipment according to a preferred embodiment of the present invention.
5 is a perspective view showing a diffusing nozzle of an apparatus for measuring fine dust concentration for air conditioning equipment according to a preferred embodiment of the present invention.
6 is a cross-sectional perspective view showing a diffusion nozzle of an apparatus for measuring fine dust concentration for an air conditioning system according to a preferred embodiment of the present invention.
7 is a sectional view showing a diffusion nozzle of an apparatus for measuring fine dust concentration for an air conditioning system according to a preferred embodiment of the present invention.

The present invention relates to an apparatus for measuring the concentration of dust contained in air discharged from an air circulation path of an air conditioner through an air circulation path, A tubular housing 10 in which an inlet 11 for receiving measurement air is formed and an outlet 12 for discharging air to be measured is formed on the other side and an internal space is formed; A light emitting member 20 provided at one side of the inner space of the housing 10 to emit light; A light receiving member 30 provided on the other side of the inner space of the housing 10 to emit light from the light emitting member 20 and then pass through the inner space and sense scattered light; A blowing member 40 provided at an inlet 11 of the housing 10; And an air injection member (50) formed at one side of the housing (10) and injecting compressed air into the internal space through an inlet (11) communicating with the internal space. The apparatus for measuring fine dust concentration for air conditioning equipment .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown.

First, the apparatus for measuring fine dust concentration for an air conditioning system according to the present invention is installed in an air conditioning system, which is an apparatus for discharging indoor air to the outside, and includes a part of an air circulation path such as a duct for transferring air to the outside, Is installed in the air inlet (11) of the outdoor air outlet (12) or the outdoor air outlet (12) to measure the concentration of the dust contained in the air.

In addition, it is obvious that the apparatus for measuring fine dust concentration for air-conditioning equipment according to the present invention may extend the above-mentioned use to measure the concentration of dust contained in indoor or outdoor air such as a part of the indoor or outdoor leaves.

Here, the term "air circulation path" in the present invention means the entire portion of the air to which the air is transferred.

Further, in the apparatus for measuring fine dust concentration for an air conditioning system according to the present invention, light emitted from a light emitting member (20) using a laser as light is scattered by dust contained in air, and scattered light is sensed, It is a light measuring device that measures the degree of change and measures the concentration of dust according to the size of dust particles and the size of dust particles.

In addition, the light characteristics of the present invention with the above configuration, the analysis of the size and concentration of the dust particles with respect to the sensed electric signal, the function setting of the manager by the electrical signal, the display of the device status to the manager, And the storage and the storage of the measured values are executed by a general microcomputer, and the specific configuration of the microcomputer is based on a known technology.

The term "fine dust" in the present invention refers to dust and fine dusts of a general particle size suspended in the air.

Specifically, the housing 10 is provided with an inlet 11 for receiving air to be measured containing particulate dust on one side thereof, a discharge port 12 for discharging air to be measured on the other side thereof, The air to be measured which is a part of the air conveyed through the air circulation path is drawn into the inlet port 11 to measure the concentration of dust in the internal space and then the air to be measured is discharged to the discharge port 12 .

That is, the housing 10 has a tube shape as shown in FIG. 1, so that the measured air flows into the internal space and can be embedded therein. The light emitting member 20 and the light receiving member 30 , The concentration of dust contained in the air to be measured passing through the inner space can be measured.

The inlet 11 is formed at one side of the housing 10 so that the inner space of the housing 10 can communicate with the air circulation path and may be formed in various sizes depending on the size of the inner space. Preferably, the air conveying path is constructed to be large enough to receive the air conveyed through the air circulation path in real time.

The outlet port 12 is formed on the other side of the housing 10 and is drawn in from the inlet port 11 to discharge the air to be measured which has passed through the inside space to the outside of the housing 10, And the air to be introduced into the inner space is compressed in the inner space so as to have a size similar to that of the inlet 11 so that dust is not concentrated in the inner space.

At this time, it is preferable that the discharge port 12 is formed on the opposite side of the inlet 11 with respect to the internal space. This is because the light emitted from one side of the internal space is contained in the air to be measured, This is to accurately measure the concentration of dust contained in the air to be measured, which is scattered by dust.

In addition, the other side of the inner space is linearly formed so that the light emitted from the light emitting member 20 provided at one side of the inner space reaches the following light receiving member 30 provided at the other side of the inner space .

The inner surface of the inner space of the housing 10 may be coated with a conductive material 13.

That is, generally, dust is attracted to weak static electricity because of its very small particle size, and due to the continuous flow of dust to the inner space of the inner space of the housing 10 according to the present invention, a large amount of static electricity And accumulation of dust and contaminants (hereinafter referred to as "accumulation of dust") on the inner surface of the inner space can be accelerated due to the generation of the static electricity as described above.

On the contrary, the conductive material 13 improves the conductivity of the inner surface of the inner space to reduce the surface resistance of the inner surface, thereby reducing the generation of static electricity, and consequently reducing the accumulation of dust on the inner surface of the inner space I will exert.

The conductive material 13 may be at least one of carbon black, a carbon nanotube, and an intrinsically dissipative polymer (IDP), and the conductive material 13 may be mixed with a liquid adhesive composition It may be coated on the inner surface of the inner space in a manner to be applied, or may be made in the form of a film and attached to the inner surface of the inner space.

The light emitting member 20 is disposed at one side of the inner space of the housing 10 to emit light, and generates light scattered by colliding with dust contained in the air to be measured.

The light emitting member 20 includes a light source for generating light and an electric power supply for supplying power to the light source, and the light emitted from the light source may have various wavelengths. In the present invention, A light source body which emits light called "laser" will be a preferred embodiment.

Also, the light source body included in the light emitting member 20 is provided at one side of the inner space of the housing 10 to emit light in the other direction of the inner space, and the light emitted from the light source body is incident on the measured air Collides with scattered dust particles contained therein, and reaches the following light-receiving member 30.

The light-receiving member 30 is disposed on the other side of the inner space of the housing 10 to emit light from the light-emitting member 20, pass through the inner space, and sense scattered light. And an optical sensor 32 for sensing light.

At this time, the optical sensor 32 detects the scattered light reaching the surface of the optical sensor 32 and converts it into an analog signal. The optical sensor 32 is configured to convert the sensed light into an electrical signal. The optical sensor 32 ) Is transmitted to the microcomputer and is calculated as the concentration of the dust classified according to the particle size of the dust, and is displayed to the manager or stored in the storage device.

In addition, general information for calculating the density of the dust, that is, light emitted from the light emitting member 20 is information on the type of wavelength, the electric signal value of scattered light that can be obtained through the optical sensor 32 And information such as arithmetic information for calculating the concentration of dust by comparing the wavelength type and the electrical signal value of the scattered light are stored in advance in the microcomputer.

Further, the light receiving member 30 may include a lens (not shown) for condensing scattered light; An optical filter (31) located on the other side of the lens to filter scattered light; And an optical sensor 32 positioned on the other side of the optical filter 31 and sensing the filtered light.

That is, the lens collects light scattered by the dust conveyed in the direction of the discharge port 12 from the inlet 11 in the inner space. The scattered light, which is scattered and spread to the other side of the inner space, And moves in the direction of the optical sensor 32.

In addition, the optical filter 31 is configured to filter light of unnecessary wavelength included in the light condensed by the lens, and to pass only light of a required wavelength in the direction of the optical sensor 32. At this time, the optical filter 31 can use a visible light filter for blocking visible light when it enters the internal space, and furthermore, the administrator can adjust the visible light filter according to the type of dust, It can be selected and used in an appropriate kind.

In addition, a detailed description of the optical sensor 32 will be substituted for the above description.

The air blowing member 40 is provided in the inlet 11 of the housing 10 to draw the air to be measured into the inner space of the housing 10 and includes dust particles conveyed through the air circulation path And a part of the air is drawn into the inner space of the housing 10.

The blowing member 40 includes a blowing device such as a blowing fan 41. The blowing member 40 is connected to the inlet frame of the housing 10 while being fastened to the support frame 41 supporting the blowing fan 41, (11). At this time, the air blowing fan 41 is continuously operated to continuously introduce the dust-containing air, which is conveyed to the air circulation path, into the internal space of the housing 10, more preferably, So that the rotational speed of the blowing fan 41 can be adjusted so that the air to be introduced into the air circulation path can have a velocity similar to the flow velocity of the air including the dust conveyed to the air circulation path.

That is, when the flow velocity of the air including the dust conveyed to the air circulation path is high, the rotation speed of the air blowing fan 41 is adjusted to increase the amount of air to be introduced into the inner space of the housing 10 ; When the flow rate of the air including the dust conveyed to the air circulation path is slow, the rotational speed of the air blowing fan 41 is controlled to be slowed down so as to reduce the amount of air to be introduced into the inner space of the housing 10 have.

Since the rotational speed of the blowing fan 41 can be adjusted as described above, the air to be measured, which is a part of the air including the dust conveyed from the air circulation path, can be drawn into the inner space of the housing 10 in real time, The concentration of the dust contained in the actual air discharged through the air can be accurately measured in real time.

The air injection member 50 is formed on one side of the housing 10 and injects compressed air into the internal space through an inlet 11 communicating with the internal space. The air injection member 50 injects compressed air into the internal space of the housing 10, The dust accumulated in the inner space is removed.

That is, the air injection member 50 may be configured in various forms as long as it can compress the air to form a high pressure and then inject the air into the inlet 11. More preferably, the air injection member 50 may include a compression pump ); A flow path 51 for transferring the compressed air generated in the compression pump to one side of the inner space of the housing 10; And a diffusion nozzle 60 provided at the end of the flow path 51 for diffusing the compressed air into the inner space of the housing 10 and injecting the compressed air.

At this time, the compression pump sucks air in the air to compress the air to form high-pressure compressed air, and a general compression pump can be used, and it is more preferable to use an electric compression pump. In addition, the air in the atmosphere may be air to be transferred to the air circulation path, but is preferably air in a space outside the air circulation path.

The passage 51 is connected to the discharge port 12 of the compression pump at one side and connected to the inlet 11 of the housing 10 at the other side extended from one side, .

A pressure regulator (not shown) is provided at a predetermined portion of the flow path 51 or between the compression pump and the flow path 51 to adjust the pressure of the compressed air delivered to the inner space of the housing 10 through the flow path 51. [ And the pressure regulator operates under the control of the microcomputer to more accurately control the pressure of the compressed air injected into the internal space.

In connection with the above, it will be apparent that the compression pump itself can also regulate the pressure of the compressed air being produced.

The diffusion nozzle 60 is provided at the end of the flow path 51 to diffuse the compressed air into the inner space of the housing 10 and to inject the compressed air. The compressed air, which is injected into the inner space of the housing 10, The dust accumulated in the inner space of the dust collector 10 is removed and discharged to the discharge port 12.

That is, the compressed air delivered through the flow path 51 can be directly injected into the inner space of the housing 10 without the diffusion nozzle 60. However, when high-pressure compressed air is directly injected into the inner space of the housing 10, There is a possibility that the inner surface forming the inner space is damaged due to the high pressure of air, the light emitting member 20 provided on one side of the inner space is damaged, or the light receiving member 30 provided on the other side of the inner space is damaged Therefore, it is preferable to spray through the diffusion nozzle 60.

In addition, the compressed air injected from the diffusion nozzle 60 forms a vortex and forms a vortex as described above. The compressed air injected forms a vortex even in the inner space of the housing 10, The dust accumulated in the space inside the housing 10 can be more effectively removed.

Further, when the compressed air supplied from the air injection member 50 is continuously injected into the internal space of the housing 10, there arises a problem that the air to be measured contained in the internal space is continuously discharged to the outside of the internal space. The member 50 preferably injects compressed air periodically into the internal space of the housing 10.

Specifically, the injection period of the compressed air can be freely adjusted according to the installation environment of the air conditioner installed in the air conditioner of the present invention. However, in a typical air conditioner installation environment, It is preferable to spray for 10 seconds.

In addition, the pressure of the compressed air can be freely adjusted according to the installation environment of the air conditioner provided with the fine dust concentration measuring apparatus for an air conditioner according to the present invention, but it is preferable that the pressure is 2 to 10 bar.

In connection with the above, a spiral protrusion groove or protrusion protrusion 14 may be formed on the inner surface of the inner space of the housing 10 from one side to the other side. That is, the projecting groove or protrusion 14 of the above-described configuration realizes the effect that the compressed air injected from the diffusion nozzle 60 forms a stronger vortex in the inner space of the housing 10. [ At this time, the depth of the protruding groove or the height of the protruding protrusion 14 can be variously adjusted according to the judgment of a person skilled in the art.

In addition, the diffusion nozzle 60 can be removed such that the compressed air transferred through the flow path 51 is diffused to the entire portion of the inner space of the housing 10 to remove dust accumulated in the inner space with a predetermined spraying force And a first orifice 72 for finely injecting the air conveyed in the hollow is provided in the lower portion of the first orifice 72. [ A nozzle body (70) having an injection head (71); The nozzle body 70 is inserted into the hollow of the nozzle body 70. The outer surface of the nozzle body 70 is provided with a projecting piece 81 having a thread-like shape directed from the top to the bottom, a direct current hollow 82 directed from the top to the bottom is formed, And a vortex tube 80 having a second orifice 85 corresponding to the injection hole 84 in the injection hole 73 of the first orifice 72.

That is, the diffusion nozzle 60 according to the above configuration is provided at the end of the flow path 51 (which may correspond to the inlet 11 of the housing 10), and the first orifice 72 is provided macroscopically at the bottom, A nozzle body 70 which is connected to the distal end of the flow path 51 and which divides the compressed air which is introduced into the hollow of the nozzle body 70 and hollowly transferred to the nozzle body 70, And a vortex tube 80 for spraying one of the compressed air filaments as a second orifice 85.

That is, a portion of the nozzle body 70 is fastened to the end of the flow path 51, and a hollow for conveying the compressed air from the upper part to the lower part is formed in the nozzle body 70. The compressed air, And a jet head 71 having a first orifice 72 for jetting is formed.

Specifically, a portion of the upper portion of the nozzle body 70 has a predetermined length, and a thread is provided on the outer surface of the nozzle body 70 so as to be coupled with the thread provided at the end of the flow path 51, and is tightly fastened to the flow path 51. A hollow having a diameter enough to allow the following vortex tube 80 to be inserted therein is formed in the nozzle body 70. The hollow communicates with the flow passage 51 to receive compressed air, 71 to the first orifice 72 of the compressor.

The injection head 71 corresponding to the lower portion of the nozzle body 70 is formed to extend from the lower end of the upper portion of the nozzle body 70 as shown in FIG. 4 and has a first orifice 72 are constituted.

At this time, the injection head 71 may be formed in the form of a general diffusion nozzle 60 provided with an orifice. However, as shown in FIG. 5, the injection hole 73 of the first orifice 72, )and; A diffusion chin 74 formed radially outwardly from the outer side of the injection hole 73; And a plurality of pressure control holes (76) penetrating the inside and outside of the diffusion jaw (74).

6, the injection hole 73 is formed in the upper part of the injection head 71 corresponding to the upper portion of the injection hole 73, and the nozzle body 70 A recessed portion 78 having the same inner diameter as the hollow of the nozzle body 70 and communicating with the hollow of the nozzle body 70 is formed so as to be in contact with the air of the compressed air conveyed from the hollow of the nozzle body 70 to the injection hole 73 It is also possible to secure a smooth flow.

The diffusion tongue 74 has a predetermined height and extends radially outward of the injection hole 73. The diffusion tongue 74 has a predetermined inclination angle with respect to the diffusion surface 75, The degree of diffusion of the compressed air injected from the holes 73 is controlled.

At this time, the compressed air sequentially delivered through the hollow of the nozzle body 70 and the first orifice 72 uses the principle of a general orifice that injects the fluid by Bernoulli's theorem. That is, the hollow of the nozzle body 70 has a larger inner diameter than the injection hole 73 of the first orifice 72, and the compressed air passing through the injection hole 73 of the first orifice 72 passes through the nozzle body 70, the compressed air exiting from the spray hole 73 is discharged from the discharge port of the compressed air through the jaw at the end of the spray hole 73 and the outer side of the spray hole 73 (The diffusion surface 75) and the compressed air injection area (the area located on the straight line of the injection hole 73).

7, the pressure regulating hole 76 is formed radially inwardly and outwardly of the diffusion jaw 74 around the injection hole 73 like the shape of the diffusion jaw 74, The pressure on the side of the diffusion surface 75 becomes excessively lower than the pressure on the side of the compressed air injection so that the compressed air to be injected does not spread out far away when the air is radiated from the spray hole 73 located at the center of the diffusion surface 75 .

That is, when the compressed air is radiated from the injection hole 73, since the inner side of the diffusion jaw 74 has a lower pressure than the outer side of the diffusion jaw 74, . At this time, the air introduced inward from the outside of the diffusion trough 74 through the pressure adjusting hole 76 stabilizes the low air pressure adjacent to the diffusion surface 75 so that the compressed air to be injected spreads only to a close range due to the low air pressure It is possible to obtain the effect of securing the straightness of the compressed air to be injected.

7, the inclination angle of the pressure regulating hole 76, which is the inclination of the pressure regulating hole 76 with respect to the diffusion jaw 74, can be freely set according to the judgment of a person skilled in the art, So that it is possible to simultaneously realize the diffusion and straightness of the compressed air to be injected.

In addition, the vortex tube 80 is inserted into the hollow of the nozzle body 70, and the outer surface of the vortex tube 80 is formed with a projecting piece 81 of a thread-like shape directed from the top to the bottom, And a second orifice 85 having a spray hole 84 corresponding to the spray hole 73 of the first orifice 72 is formed at a lower portion thereof.

Specifically, the lower portion of the vortex tube 80 has a length that can be inserted into the hollow of the nozzle body 70, and the injection hole 84 of the second orifice 85 formed at the lower portion of the vortex tube 80, Of the first orifice 72 is projected in the direction corresponding to the center of the injection hole 73 of the first orifice 72. [

The lower part of the vortex tube 80 in the case where the jetting head 71 is provided with the concave part 78 is formed in a concave shape with the lower part of the vortex tube 80 being kept at a certain distance from the concave part 78 The orifice 84 of the second orifice 85 has a diameter smaller than that of the orifice 72 of the first orifice 72, The distal end of the first orifice 72 may be located at a portion corresponding to the inlet portion of the first orifice 72 through the first orifice 72.

At this time, the lower part of the vortex tube 80 (a part of the projecting piece 81) is caught by the connecting part between the concave part 78 of the jetting head 71 and the hollow end of the nozzle body 70, The funnel-shaped protrusion 86 provided with the second orifice 85 formed at the lower portion of the second orifice 85 maintains a certain distance from the recess 78 of the ejection head 71, 84 can be positioned on a straight line with the injection hole 73 of the first orifice 72.

The main purpose of the vortex tube 80 is to supply the compressed air conveyed through the hollow of the nozzle body 70 in the hollow of the nozzle body 70 to the hollow inner surface of the nozzle body 70 and the vortex tube 80 And a hollow hollow space 82 formed inside the swirler 80. The hollow space 83 is a space between the outer surface of the swirler 80 and the outer surface of the swirler 80,

At this time, a projecting piece 81 of a thread-like shape formed to be directed downward from the upper part of the vortex tube 80 on the outer surface of the vortex tube 80 is connected to the outer surface of the vortex tube 80 and the inner surface of the nozzle body 70 A space is formed between the surfaces so that the compressed air can be transported, and the compressed air, which is formed in a thread shape, can form eddy currents.

The compressed air conveyed to the lower portion of the nozzle body 70 through the vortex hollow space 83 which is a space between the outer surface of the vortex tube 80 and the inner surface of the nozzle body 70 forms a vortex And passes through the first orifice 72, it can be diffused and injected more than the compressed air in the case of passing through the vortex hollow 83 as a direct current when injected.

The direct current hollow 82 formed inside the vortex tube 80 is formed in a downward direction from the upper portion of the vortex tube 80 to supply the compressed air supplied to the hollow entry of the nozzle body 70 to the nozzle body 70 and the compressed air is injected through the second orifice 85 provided in the lower portion of the vortex tube 80. [

At this time, the compressed air conveyed in the direction of the ejection head 71 through the direct current hollow 82 is not vortexable as compared with the compressed air conveyed through the eddy-current hollow cavity 83, so that the compressed air is conveyed through the eddy- 1 orifice 72, it is possible to inject the air through the vortex hollow 83 to a distance farther than the compressed air injected from the first orifice 72.

That is, the diffusion nozzle 60 according to the present invention transports the compressed air conveyed in the hollow of the nozzle body 70 into the vortex hollow 83 and the DC hollow 82 by the vortex tube 80, When the compressed air conveyed through the hollow is injected in the injection area of the injection head 71, it is possible to realize the effect of satisfying both the diffusivity and the straightness of the compressed air injection.

At this time, the distal end of the spray hole 84 formed in the second orifice 85 has a diameter smaller than that of the spray hole 73 of the first orifice 72, so that the compressed air conveyed through the swirling hollow 83 passes through the first orifice The first orifice 72 at the end of the injection hole 84 of the second orifice 85 in the protruding shape is configured to be able to be transferred to the injection hole 73 of the second orifice 72, Is freely applicable according to the judgment of a person skilled in the art.

The following is a preferred embodiment of measuring the concentration of dust contained in the air conveyed to the air circulation path of the air conditioner equipped with the fine dust concentration measuring apparatus for air conditioner according to the present invention.

First, the fine dust concentration measuring apparatus for an air conditioning system according to the present invention is mounted on an inlet of a duct (air circulation path) constituting an air conditioning system, and includes a light source body of a light emitting member, an optical sensor of a light receiving member, a blowing fan of an air blowing member, The member's compression pump is connected to the microcomputer of the controller installed in the room.

In addition, a permanent antistatic polymer, which is a conductive material, is coated on the inner surface of the inner space of the housing with an average thickness of 50 m.

Also, the diffusion nozzle of the air injection member is in a state of being fastened to the end of the flow path located at a portion corresponding to the inlet of the housing, and the diffusion nozzle is composed of the nozzle body and the vortex tube which is inserted into the hollow of the nozzle body.

In addition, the air conditioner is in operation, and air containing dust is discharged from the room to the outside through the duct.

The blowing fan is operated to draw a part of the air including the dust conveyed in the duct into the entrance of the housing as the air to be measured. At this time, the blowing fan is operated so that the air to be measured is drawn into the inner space of the housing at a flow rate similar to the flow rate of the air including the dust conveyed in the duct.

In addition, the air to be measured which is drawn into the inner space of the housing is transferred from one side of the inner space to the other side, and then discharged to an outlet formed on the other side of the inner space to join with air containing dust inside the duct.

Also, while the air to be measured is being conveyed in the inner space of the housing, the laser is emitted in the other direction of the inner space in the light source member of the light emitting member provided at one side of the inner space, and the emitted laser is moved from one side of the inner space to the other side Scattered by the dust included in the air to be measured and converted into scattered light, and the scattered light sequentially passes through the lens of the light receiving member and the visible light filter, and then reaches the optical sensor.

The filtered light reaching the optical sensor is converted to an electrical signal by the optical sensor, and then transmitted to the microcomputer. Then, the microcomputer displays the calculated dust concentration value on the user interface using the wavelength information of the previously stored laser, the size information of the dust particle according to the degree of change of the scattered light with respect to the wavelength, and the information of the dust concentration And stores it in a storage device.

After being continuously performed in the above-described manner, the compression pump of the air injection member sucks the outside air to produce compressed air having a pneumatic pressure of 4 bar, and the compressed air is transferred to the diffusion nozzle through the flow path, It is sprayed strongly for about 2 to 3 seconds to remove dust particles and contaminants from the inner surface of the inner space of the housing and discharge them to the outlet of the housing.

In addition, the compressed air injection process is performed at intervals of 1 hour and 30 minutes.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

10: housing 11: inlet
12: Outlet 13: Conductive material
14: projecting projection 20: light emitting member
30: light receiving member 31: optical filter
32: optical sensor 40: air blowing member
41: blower fan 50: air injection member
51: flow path 60: diffusion nozzle
70: nozzle body 71: injection head
72: first orifice 73:
74: spreading jaw 76: pressure regulator
75: diffusing surface 78: concave
80: vortex tube 81: protruding piece
82: DC hollow 83: Vortex hollow
84: minus 85: second orifice
86: protrusion

Claims

A tubular housing 10 in which an inlet 11 for receiving air to be measured containing particulate dust is formed on one side and an outlet 12 for discharging air to be measured is formed on the other side, ; A light emitting member 20 provided at one side of the inner space of the housing 10 to emit light; A light receiving member 30 provided on the other side of the inner space of the housing 10 to emit light from the light emitting member 20 and then pass through the inner space and sense scattered light; A blowing member 40 provided at an inlet 11 of the housing 10; An air injection member (50) formed at one side of the housing (10) and injecting compressed air into the internal space through an inlet (11) communicating with the internal space; The air injection member 50 includes a compression pump for generating compressed air; A flow path 51 for transferring the compressed air generated in the compression pump to one side of the inner space of the housing 10; And a diffusion nozzle (60) provided at the end of the flow path (51) for diffusing compressed air into the inner space of the housing (10) and injecting the compressed air;
The diffusion nozzle 60 is provided with a hollow for transferring air from the upper part to the lower part and a lower part provided with a jet head 71 having a first orifice 72 for finely jetting the air conveyed in the hollow A nozzle body (70) having a nozzle body The nozzle body 70 is inserted into the hollow of the nozzle body 70. The outer surface of the nozzle body 70 is provided with a projecting piece 81 having a thread-like shape directed from the upper part to the lower part. The hollow part 82 is formed from the upper part to the lower part, And a vortex tube 80 having a second orifice 85 corresponding to the injection hole 84 in the injection hole 73 of the first orifice 72,
The ejection head (71)
A spray hole 73 formed in the inner center of the first orifice 72 communicating with the hollow; A diffusion chuck 74 formed radially outwardly from the outer side of the injection hole 73; And a plurality of pressure control holes (76) penetrating the inside and outside of the diffusion jaw (74)
The injection period of the compressed air,
Wherein the air is sprayed for 2 to 10 seconds at a cycle of 1 to 3 hours.

The method according to claim 1,
The housing (10)
And a spiral protrusion groove or protrusion (14) is formed on the inner surface of the inner space so as to be directed from one side to the other side.

The method according to claim 1,
The housing (10)
And a conductive material (13) is coated on the inner surface of the inner space.

The method according to claim 1,
The light-receiving member (30)
A lens for condensing scattered light;
An optical filter (31) located on the other side of the lens to filter scattered light;
And an optical sensor (32) located on the other side of the optical filter (31) and sensing the filtered light.

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