KR20240006901A - System for reducing fine dust of the outdoor air - Google Patents

Abstract

The system for reducing fine dust in outdoor air according to the present invention is installed outdoors and uses a plurality of water wheel-type water wheels to drop cleaning water in the form of drops, thereby more effectively washing away pollutants such as fine dust in outdoor air. There are benefits to this. Additionally, by installing it on the upper side of the sewer, the cleaning water that has cleaned the outdoor air can be drained through the sewer, making treatment of contaminated water easier. Additionally, maintenance costs can be reduced by recycling at least a portion of the sewage drained through the sewer as washing water. Additionally, since it is easy to attach and detach from around the road and there are no replacement parts such as filters, installation and maintenance costs can be reduced.

Description

{System for reducing fine dust of the outdoor air}

The present invention relates to a system for reducing fine dust in outdoor air. More specifically, it is installed outdoors, such as on roads or outdoors, and cleans outdoor air by dropping cleaning water in the form of droplets, effectively removing pollutants in outdoor air. This relates to a system for reducing fine dust in outdoor air that can be removed.

In general, an air purification device is a dry purification device that sucks in air, removes contaminants through a filter, and discharges the purified air again.

Conventional dry air purification devices are easy to remove fine dust, but have difficulty removing bacteria, viruses, and mold.

Recently, interest in wet air purification devices that purify the air by spraying cleaning water such as water or disinfectant has increased.

However, since the conventional wet air purification device cleans contaminants in the air by spraying cleaning water in the form of mist through a spray device, there is a problem in that the contact efficiency between air and liquid is low and the cleaning effect is weak.

Korean Patent No. 10-0482926

The purpose of the present invention is to provide a fine dust reduction system in outdoor air that has a simple structure, is easy to install, and can reduce fine dust more effectively.

The system for reducing fine dust in outdoor air according to the present invention includes a washing water distribution tank installed outdoors, containing washing water therein, and having a plurality of washing water discharge ports to distribute and discharge the washing water in the direction of gravity; Including a plurality of waterwheel-type water wheels provided at the lower side of the washing water distribution tank and configured to freely fall the washing water in the form of drops while rotating according to the flow rate of the washing water discharged from the washing water discharge ports, It includes a washing water dropping unit for cleaning the outdoor air naturally circulating below the washing water distribution tank with falling washing water.

The washing water distribution tank is installed on the upper side of the sewer to drain the washing water that has cleaned the outdoor air.

The washing water distribution tank is installed in a long upward direction above the drain, and is mounted on a case with at least one side open to allow outdoor air to pass through and a lower surface communicated with the drain.

The washing water distribution tank is detachably coupled to the upper side of a guard fence on the road.

The washing water distribution tank is removably installed on the upper part of a guard fence installed on the curb of the road, and the waterwheel-type water wheels are provided on the roadway of the road below the washing water distribution tank. It is provided at a position facing a sewer, and the washing water that cleansed the outdoor air falls to be drained into the sewer.

The washing water distribution tank is installed on the outdoor side of at least one of a window, door, and entrance.

It further includes a sewage recycling unit for recycling at least a portion of the sewage drained through the sewer into the washing water distribution tank to be recycled as washing water.

The sewage recycling unit connects a sewage storage tank for temporarily storing sewage discharged through the sewer, the sewage storage tank and the washing water distribution tank, and transfers at least a portion of the sewage stored in the sewage storage tank to the washing water distribution tank. It includes a recycled water pipe for recycling sewage, and a recycled water pump installed in the recycled water pipe.

The sewage recycling unit further includes a sewage filter that is installed in at least one of the sewage storage tank and the recycled water pipe to filter sewage.

A plurality of the washing water discharge ports are formed on the lower surface of the washing water distribution tank at a predetermined distance from each other in the longitudinal direction and the width direction of the washing water distribution tank.

The waterwheel-type water turbine is formed in a long roll shape in the longitudinal direction, and a plurality of waterwheels are arranged in the width direction.

The waterwheel-type water turbine includes an annular groove formed along the circumferential direction on the outer peripheral surface, and a plurality of grooves formed along the circumferential direction in the annular groove, spaced apart from each other at a predetermined distance, to temporarily receive the washing water discharged from the washing water discharge ports. It includes water receiving grooves that are then discharged.

The annular grooves are formed in plural numbers spaced apart from each other at predetermined intervals along the longitudinal direction of the waterwheel-type water wheel, and the water receiving groove formed in any one of the plurality of annular grooves is adjacent to the first annular groove. It is formed at a position offset by a first preset distance in the circumferential direction from the water receiving groove formed in the second annular groove.

The water-receiving groove formed in any one of the plurality of waterwheel-type waterwheels is a second set distance in the longitudinal direction of the waterwheel-type waterwheel from the water-receiving groove formed in the other second waterwheel adjacent to the first waterwheel. It is formed at an offset position.

The water receiving groove is formed to be deeper in depth and have a larger cross-sectional area than the annular groove.

The water receiving groove is formed long in a direction inclined at a predetermined angle from the radial direction of the waterwheel-type water wheel.

The water wheel-type water turbine includes a plurality of water-receiving grooves that receive the washing water discharged from the washing water discharge port and then discharge it in the form of drops, and the plurality of water-receiving grooves are formed in the circumferential direction and on the outer peripheral surface of the water wheel-type water wheel. They are formed to be spaced apart at predetermined intervals along the longitudinal direction.

The waterwheel-type water turbine is formed in a cylindrical shape long in the longitudinal direction, and has a cylindrical portion on its outer peripheral surface formed with a plurality of water-receiving grooves for temporarily receiving the washing water discharged from the washing water discharge port and then discharging it in the form of drops, and the cylinder It further includes a rotating shaft provided at the center of the unit to rotate the cylindrical section, and a motor driving the rotating shaft.

The washing water dropping unit further includes water wheel interlocking means that connects the plurality of water wheel type water wheels and rotates them simultaneously.

The water wheel interlocking means includes a gear portion provided on each outer peripheral surface of the water wheel water wheel and gear-coupling the water wheel water wheel adjacent to each other.

A system for reducing fine dust in outdoor air according to another aspect of the present invention includes a washing water distribution tank installed outdoors, containing washing water therein, and having a plurality of washing water discharge ports to distribute and discharge the washing water in the direction of gravity; ; Including a plurality of waterwheel-type water wheels provided at the lower side of the washing water distribution tank and configured to freely fall the washing water in the form of drops while rotating according to the flow rate of the washing water discharged from the washing water discharge ports, It includes a washing water dropping unit for washing the outdoor air naturally circulating in the lower part of the washing water distribution tank with falling washing water, wherein the washing water distribution tank is located at the upper side of the sewer to drain the washing water that has cleaned the outdoor air. It is installed in, the washing water discharge ports are formed in a plurality at a predetermined distance from each other in the longitudinal direction and the width direction of the washing water distribution tank on the lower surface of the washing water distribution tank, and the water wheel-type water wheel is located on the outer peripheral surface. It includes an annular groove formed along the circumferential direction and a plurality of water-receiving grooves formed in the annular groove along the circumferential direction at a predetermined distance apart from each other to temporarily receive the washing water discharged from the washing water discharge ports and then discharge the water.

The system for reducing fine dust in outdoor air according to the present invention is installed outdoors and uses a plurality of water wheel-type water wheels to drop cleaning water in the form of drops, thereby more effectively washing away pollutants such as fine dust in outdoor air. There are benefits to this.

Additionally, by installing it on the upper side of the sewer, the cleaning water that has cleaned the outdoor air can be drained through the sewer, making treatment of contaminated water easier.

Additionally, maintenance costs can be reduced by recycling at least a portion of the sewage drained through the sewer as washing water.

Additionally, since it is easy to attach and detach from around the road and there are no replacement parts such as filters, installation and maintenance costs can be reduced.

In addition, by optimizing the shape and arrangement of the annular groove and water catch groove formed in the water wheel water wheel, the washing water droplets fall more tightly in time and space, thereby maximizing the contact efficiency between air and washing water, thereby improving cleaning efficiency. there is.

In addition, by gear-coupling a plurality of waterwheel-type water wheels and configuring them to rotate at the same rotational speed, the size and weight of the falling drops of washing water can be maintained uniformly within a predetermined range.

Figure 1 is a diagram schematically showing the installation state of a system for reducing fine dust in outdoor air according to a first embodiment of the present invention.
Figure 2 is a perspective view schematically showing the washing water distribution tank and waterwheel-type water wheel shown in Figure 1.
FIG. 3 is an enlarged cross-sectional view of the washing water distribution tank and waterwheel-type water wheel shown in FIG. 1.
FIG. 4 is a side view of the waterwheel type water wheels shown in FIG. 1.
Figure 5 is a diagram schematically showing the installation state of a system for reducing fine dust in outdoor air according to a second embodiment of the present invention.
FIG. 6 is a view seen from direction A of FIG. 5.
Figure 7 is a diagram schematically showing an example of installation of a system for reducing fine dust in outdoor air according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

The outdoor air fine dust reduction system 100 according to an embodiment of the present invention is a device installed outdoors to reduce fine dust in the outdoor air by dropping washing water into the naturally circulating outdoor air.

The fine dust reduction system 100 is described as being provided on the upper side of the sewer 4 of the road 2 as an example. However, it is not limited to this, and the fine dust reduction system 100 can be installed anywhere outdoors, such as on a rooftop, in addition to the road 2.

The road 2 is divided into a sidewalk 2a for pedestrians and a roadway 2b for vehicles. The sidewalk 2a and the roadway 2b are formed to be stepped, and a curb 2c is installed to separate the sidewalk 2a from the roadway 2b.

For example, the drain 4 is described as being located next to the curb 2c in the roadway 2b. The drain 4 includes a drain 4a formed with a portion of the upper surface open and collecting washing water or rainwater, and a grating 4b installed to cover the open upper surface of the drain 4a.

In this embodiment, the fine dust reduction system 100 is described as being installed vertically above the sewer 4. However, the fine dust reduction system 100 is not limited to this, and is installed above the sewer 4, at a predetermined distance from the vertical upper portion of the sewer 4, and directs the washing water to the sewer 4. If the location allows drainage, it can be changed in various ways.

Figure 1 is a diagram schematically showing the installation state of a system for reducing fine dust in outdoor air according to a first embodiment of the present invention. Figure 2 is a perspective view schematically showing the washing water distribution tank and waterwheel-type water wheel shown in Figure 1. FIG. 3 is an enlarged cross-sectional view of the washing water distribution tank and waterwheel-type water wheel shown in FIG. 1.

1 to 3, the fine dust reduction system 100 includes a case 10, a washing water distribution tank 20, a washing water dropping unit 30, and a sewage recycling unit 50.

The case 10 forms an external appearance and is installed elongated upwardly on the upper side of the drain 4. Additionally, the case 10 is installed along the longitudinal direction of the road 2. The case 10 is formed so that the washing water distribution tank 20 and the washing water dropping unit 30 are mounted therein.

The case 10 has at least one side open to allow outdoor air naturally circulating around the road 2 to pass through, and its lower surface open to communicate with the sewer 4. A portion of the side of the case 10 facing the roadway 2b is formed to be open, providing an air inlet 10a through which outdoor air flows in due to the air flow generated by vehicles passing through the roadway 2b. form The case 10 forms a space where the air introduced through the air inlet 10a comes into contact with the washing water falling from the washing water dropping unit 30. Of course, the air inlet 10a can also be formed in the form of a mesh or perforated plate.

The case 10 is installed on the upper side of the grating 4b of the sewer 4. The lower end of the case 10 can be detachably coupled directly to the grating 4b, and it is also possible to detachably install it on the roadway 2b. In addition, the case 10 can of course be formed integrally with the grating 4b, or be formed so that at least a portion of the lower part of the case 10 is inserted and mounted into the drainage channel 4a. In other words, the structure can be changed in various ways as long as it allows the washing water that falls from the case 10 to be drained into the sewer 4.

The washing water distribution tank 20 is provided inside the case 10, and is installed at a position spaced apart from the drain 4 in the upward direction (z) by a set height to determine the distance over which the washing water falls. Make sure to secure enough. Since the contact time between the falling cleaning water and outdoor air may increase depending on the set height, the higher the set height, the more outdoor air can be cleaned.

The washing water distribution tank 20 is formed long along the longitudinal direction of the road 2. The washing water distribution tank 20 is a tank in which washing water supplied from the outside is temporarily stored. A plurality of washing water discharge ports 22 are formed on the lower surface of the washing water distribution tank 20 to distribute and discharge the washing water in a downward direction toward the drain 4.

2 and 3, the washing water discharge ports 22 are disposed on the lower surface of the washing water distribution tank 20 in the longitudinal direction (y) and the width direction (x) of the road, respectively. A plurality of them are formed at predetermined intervals. That is, the washing water outlets 22 are formed to form a plurality of rows and columns.

The washing water outlets 22 each include a first outlet 22a that is concave downward from the lower surface of the washing water distribution tank 20 and is shaped like a bowl to contain a predetermined amount of washing water. , and includes a second discharge port (22b) formed in a downward slit shape to discharge the cleaning water from the lower surface of the first discharge port (22a). At least a portion of the first discharge port 22a is formed so that its cross-sectional area decreases as it moves downward. Since the first discharge port 22a is formed in a bowl shape, not only can a uniform discharge amount be maintained, but also the entire amount of the supplied cleaning water can be discharged without any residue, so there is an advantage in preventing freezing even in cold weather. Additionally, the washing water discharge port 22 may be provided with a valve means to open and close it.

The washing water dropping unit 30 is installed at the lower part of the washing water distribution tank 20 inside the case 10. The washing water falling unit 30 receives the washing water discharged from the plurality of washing water discharge ports 22 and then rotates according to the flow rate of the washing water to cause the washing water to freely fall downward in the form of drops. It includes a plurality of waterwheel-type water wheels (40).

The waterwheel-type water turbine 40 is a roll, that is, a cylinder, long in the row direction (y) to correspond to the washing water discharge openings 22 arranged in the same row among the plurality of washing water discharge openings 22. formed into a shape. In addition, the water wheel-type water wheel 40 is provided in plural numbers in the width direction (x) of the road to correspond to the washing water discharge openings 22 arranged in the same row of the plurality of washing water discharge openings 22. They are placed at a predetermined distance from each other. In this embodiment, for example, the washing water discharge ports 22 are described as being formed in two in the width direction (x) of the road, so for example, two waterwheel-type water wheels 40 are provided. Explain. However, it is not limited to this, and the number of the washing water discharge ports 22 and the number or length of the water wheel type water wheel 40 are determined by the width and length of the road 2 and the width and length of the sewer 4. It can be changed in various ways depending on etc.

The waterwheel-type water wheel 40 includes a cylindrical portion 41 formed long in the longitudinal direction (y) of the road, and a rotation shaft provided at the center of the cylindrical portion 41 to rotate the cylindrical portion 41. 42), an annular groove 43 formed on the outer peripheral surface of the cylindrical portion 41, and a water receiving groove 44 formed on the outer peripheral surface of the cylindrical portion 41.

The rotation shaft 42 can support the water wheel-type water wheel 40 to rotate by the weight of the washing water stored in the water receiving groove 44, and is connected to a separate motor (not shown) to Of course, it is also possible to rotate by driving (not shown). That is, the rotation shaft 42 can be rotated without power or driven by a motor (not shown). In this embodiment, the waterwheel-type water wheel 40 is explained as an example in which it rotates without external power.

The annular groove 43 is a groove formed in a ring shape along the circumferential direction on the outer peripheral surface of the cylindrical portion 41. A plurality of the annular grooves 43 are formed to be spaced apart from each other at a predetermined distance along the longitudinal direction (y). The number of the annular grooves 43 is formed to correspond to the number of the washing water discharge holes 22 in the column direction (y). The annular groove 43 serves to prevent the washing water discharged from the washing water discharge port 22 from splashing against the water wheel-type water wheel 40 and to guide the washing water to the water receiving groove 44. .

The water receiving groove 44 is a water bag formed in the annular groove 43 to temporarily accommodate washing water. The water receiving grooves 44 are formed in plural numbers for each annular groove 43. The water receiving grooves 44 are formed in plural numbers spaced apart from each other at a predetermined distance along the circumferential direction in the annular groove 43. The water receiving groove 44 is formed to be deeper in depth and have a larger cross-sectional area than the annular groove 43. The water receiving groove 44 is formed long in a direction inclined at a predetermined angle θ from the radial direction of the water wheel water turbine 40, and temporarily releases the washing water according to the rotation of the water wheel water wheel 40. After receiving it, it can be discharged downward.

The water catch groove 44 is formed to be long in a direction inclined toward the rotation direction of the waterwheel-type water wheel 40, and its bottom is rounded in a hemispherical shape. The larger the droplet size and weight of the washing water falling from the water catch groove 44, the greater the falling speed of the washing water, and scattering can be minimized. Since the droplet size and weight of the washing water falling are proportional to the volume of the water receiving groove 44, it is desirable to design the volume of the water receiving groove 44 according to the droplet size of the washing water. In addition, it is desirable to design the volume of the water receiving groove 44 so that the falling speed of the washing water is greater than the flow speed of the air.

Referring to FIG. 4, among the waterwheel type water turbines 40, the water receiving grooves 411 and 412 formed in different annular grooves 43a and 43b in the same water wheel have a first set distance d1 in the circumferential direction. It is formed at a position offset by For example, the first water receiving groove 411 formed in the first annular groove 43a formed in any one of the first water turbines 410 among the water wheel water turbines 40 is connected to the other second annular groove 43b. It is formed at a position offset by a first set distance d1 in the circumferential direction from the second water receiving groove 412 formed in . Accordingly, the washing water drops falling from the first water receiving groove 411 and the second water receiving groove 412 formed in different annular grooves in the same aberration fall at different positions with a predetermined first time difference, Washing water can fall more densely in time and space.

In addition, among the waterwheel type water turbines 40, the water receiving grooves 44 formed in the same annular groove in the same water wheel are formed at positions offset from each other by a third set distance d3 in the circumferential direction. Accordingly, the water droplets falling from the plurality of water receiving grooves 44 formed in the same annular groove in the same aberration fall at the same position, but may fall with a second time difference due to rotation. For example, if the rotation speed of the water wheel water wheel 40 is 60 rpm, the second time difference between the water droplets falling from the plurality of water receiving grooves 44 formed in the same annular groove is in the range of about 0.125 seconds to 0.167 seconds. The first time difference between the water droplets falling from the first water receiving groove 411 and the second water receiving groove 412 is within the range of about 0.06 seconds to 0.08 seconds. Accordingly, the washing water can fall more densely in time and space.

In addition, among the waterwheel-type water turbines 40, water-receiving grooves formed in adjacent but different water turbines 410 and 420 are formed at positions offset by a second set distance d2 in the longitudinal direction y. . For example, among the waterwheel-type water turbines 40, the first water receiving groove 411 formed in the first row of one of the first water turbines 410 is formed in the first row of the other second water turbine 420. It is formed at a position offset from the third water catch groove 421 by a second set distance d2 in the longitudinal direction (y). Accordingly, the washing water drops falling from the first water receiving groove 411 and the third water receiving groove 421 fall at different positions, so that the washing water can fall more densely.

In addition, the washing water dropping unit further includes water wheel interlocking means that connects the plurality of water wheel-type water wheels 40 and rotates them simultaneously.

The water wheel interlocking means is provided on the outer peripheral surface of each of the water wheel water wheels 40, and is explained by way of example as a gear unit 45 that engages and interlocks adjacent water wheel water wheels 40 with each other. do.

The gear portion 45 may be formed on at least a portion of the outer peripheral surface of the cylindrical portion 41. In this embodiment, it is explained as being formed on the front and rear sides of the cylindrical portion 41. do.

Meanwhile, the sewage recycling unit 50 is a unit that circulates at least a portion of the sewage drained through the sewer 4 to the washing water distribution tank 20 to recycle it as washing water.

The sewage recycling unit 50 includes a sewage storage tank (not shown) for temporarily storing sewage including the washing water and rainwater drained into the sewer 4, the sewage storage tank (not shown), and the washing water. A recycled water pipe (not shown) connecting the distribution tank 20 to guide at least a portion of the sewage stored in the sewage storage tank (not shown) to the washing water distribution tank 20, and the recycled water pipe (not shown) Includes a recycled water pump (not shown) installed in.

One side of the recycled water pipe (not shown) may be connected to the sewage storage tank (not shown), and the other side may be inserted into the case 10.

In addition, the sewage recycling unit 50 may further include a sewage filter (not shown) installed in at least one of the sewage storage tank (not shown) and the recycled water pipe (not shown) to purify sewage. . However, the present invention is not limited to this, and the sewage filter (not shown) may of course be provided inside the washing water distribution tank 20.

The operation of the system for reducing fine dust in outdoor air according to the first embodiment of the present invention configured as described above will be described as follows.

The washing water contained in the washing water distribution tank 20 is discharged downward to the plurality of waterwheel-type water wheels 40 through the washing water outlets 22. Here, the washing water may be sewage circulated from the sewage recycling unit (not shown), or may be water supplied through connection to a separate water pipe or underground water pipe.

The washing water discharged through the washing water outlets 22 flows into the uppermost water receiving groove 44 formed on the water wheel 40. At this time, the washing water flows into the water receiving groove 44 through the annular groove 43 of the water wheel 40. That is, the annular groove 43 serves to guide the washing water discharged from the washing water discharge port 22 to flow into the water receiving groove 44.

When the water receiving groove 44 is filled with a predetermined amount of washing water, the water wheel 40 rotates due to the weight of the washing water contained in the water receiving groove 44.

When the water receiving groove 44 filled with washing water moves downward to a certain position due to the rotation of the water wheel 40, the washing water in the water receiving groove 44 flows downward. At this time, the washing water flowing from the water catch groove 44 falls in the form of drops. That is, in the present invention, after filling the washing water into the water collecting groove 44, it falls from the water receiving groove 44, so that it falls in the form of drops.

For example, in the case where the water turbine 40 is not present, when the diameter of the washing water discharge port 22 is about 3 m/m and the discharge amount is about 6 g/sec, a water column slightly thicker than about 3 m/m falls. I do it. On the other hand, in the case where the aberration 40 is present, water droplets of about 12.4 m/m (about 1 g) fall with a time difference of 6 pieces/sec. Here, when the rotation speed of the water wheel 40 is 60 rpm, and six water receiving grooves 44 are formed in one annular groove 43 at equal intervals, a 1 g drop-shaped water mass is generated in 0.167 seconds ( They fall in the same location with a difference of 1/6).

Therefore, when the cleaning water is dropped through the water wheel 40, the surface comes into contact with more outdoor air, so the cleaning effect can be doubled.

The washing water falling from the water wheel 40 in the form of drops contacts the outdoor air naturally circulating in the lower part of the water wheel 40, collects contaminants such as fine dust in the outdoor air, and then flows into the sewer 4. drained. Here, the pollutants may include dust generated by wear of tires or brake pads piled up around the roadway, dust due to contact friction, road dust due to deterioration, and other dust. The pollutants are mainly accumulated around the roadway and become suspended when the air flows due to air flow or wind generated when a vehicle passes by. The above pollutants are regulated and cracked down for reasons such as environmental pollution, and are pollutants that cannot be resolved even if they are replaced with electric or hydrogen vehicles.

In the present invention, the cleaning water falling from the water wheel 40 comes into contact with floating contaminants and collects the contaminants before falling. Therefore, pollutants in the outdoor air can be washed away.

Contaminated water that has been cleaned from the outdoor air at the bottom of the case 10 is drained into the sewer 4.

The sewage drained into the sewer 4 moves to a sewage treatment facility through the sewer, or at least some of the sewage is pumped by the recycled water pump (not shown) and supplied to the cleaning water distribution tank 20 to clean the air. can be recycled.

As described above, the system for reducing fine dust in outdoor air according to the present invention is installed on the upper side of the sewer 4 of the road 2, and uses the plurality of water wheel-type water wheels 40 to drop washing water. By falling toward the road in a shape, there is an advantage that pollutants such as fine dust in the outdoor air around the road can be more effectively washed away.

The washing water discharged through the washing water discharge port 22 separates and falls as it passes through the water wheel 40, and the surface area increases in the form of drops, so that contact with air can be maximized while falling without being blown by the wind. . If the washing water does not pass through the water wheel 40, it falls in the form of a stream, but if it passes through the water wheel 40, it may fall in the form of drops.

Additionally, by using the air flow generated by vehicles passing through the roadway 2b or the naturally circulating air flow, there is an advantage that a separate blower device is not required.

In addition, since the plurality of waterwheel-type waterwheels 40 are arranged, the air is cleaned multiple times by the washing water falling from the plurality of waterwheel-type waterwheels 40, which has the advantage of high cleaning efficiency.

At this time, since the size, weight, and falling speed of the washing water droplets vary depending on the volume of the water collecting grooves 44, the washing water droplets are adjusted to a size, weight, and falling speed that maximize the cleaning efficiency of the air. The volume of the grooves 44 is set. Therefore, the cleaning efficiency of air can be maximized.

When the cleaning water is dropped in the form of drops as in the present invention, the contact area with air is larger than when the cleaning water is sprayed in the form of mist using a nozzle, etc., so the cleaning efficiency of the air can be improved. In addition, in the case of mist form, a phenomenon such as blowing due to wind generated when air moves occurs, but the effect of blowing force, etc. in droplet form of washing water can be minimized.

In addition, the washing water drops falling from the first water receiving groove 411 and the second water receiving groove 412 formed in different annular grooves in the same aberration fall at different positions with a predetermined first time difference. . Accordingly, the washing water can fall more densely in time and space. The first time difference is about 0.08 seconds.

In addition, the washing water drops falling from the water receiving grooves 44 of the same annular groove 43 all fall at the same location, but fall with the second time difference due to the rotation of the water wheel. The second time difference is about 0.16 seconds.

In addition, the washing water drops falling from the first water receiving groove 411 and the third water receiving groove 421 respectively fall at different positions.

As described above, the annular grooves 43 and the water catch grooves 44 according to the embodiment of the present invention are arranged in a zigzag manner at different positions, so that the wash water droplets discharged downward from the plurality of water catch grooves have a time difference. It can fall more tightly.

In addition, the plurality of waterwheel-type water wheels 40 are coupled to each other through the gear portion 45, so that they rotate at the same speed. Therefore, since the rotational speed of the plurality of waterwheel-type water wheels 40 is the same, the size and weight of the falling drops of washing water can be maintained uniformly within a predetermined range.

Meanwhile, Figure 5 is a diagram schematically showing the installation state of a system for reducing fine dust in outdoor air according to a second embodiment of the present invention. FIG. 6 is a view seen from direction A of FIG. 5.

5 and 6, the fine dust reduction system 200 in outdoor air according to the second embodiment of the present invention is installed on the upper side of the guard fence 300 of the road 2. Since it is different from one embodiment and the remaining configurations and operations are similar, a detailed description will be provided focusing on the differences, and the same symbols will be used for similar configurations and detailed descriptions thereof will be omitted.

The guard fence 300 is a fence that divides the roadway 2b and the sidewalk 2a of the road 2 or is installed in the center divider of the roadway, and is made of various materials and shapes. In this embodiment, the guard fence 300 is described as being installed on the curb 2c using a fastening member, but it is not limited to this and the installation location or method can be changed in various ways.

The fine dust reduction system 200 is removably installed at the top of the guard fence 300. However, it is not limited to this, and the fine dust reduction system 200 can of course be installed on the side of the guard fence 300 facing the roadway 2b.

Referring to Figures 5 and 6, the washing water distribution tank 220 is installed on the top of the guard fence 300 to be detachable using a fastening member 310. Additionally, the washing water distribution tank 220 is installed long along the guard fence 300.

In this embodiment, the washing water distribution tank 220 includes a case 221 that forms the exterior of the fine dust reduction system, and a water tank 222 formed to accommodate washing water inside the case 221. This is explained with an example. However, the present invention is not limited to this, and the washing water distribution tank 220 may of course be detachably coupled to the guard fence 300 using a separate case or support member.

A plurality of washing water outlets 22 are formed on the lower surface of the water tank 222, and since the configuration of the washing water outlets 22 is similar to the first embodiment, detailed description thereof will be omitted.

The washing water distribution tank 220 is installed so that one lower side is coupled to the guard fence 300 and the other lower side faces the drain 4 of the roadway 2b. That is, the center of the washing water distribution tank 220 is installed to be spaced apart from the guard fence 300 by a fourth set distance d4 in the direction toward the roadway 2b.

Accordingly, the washing water discharged downward from the washing water distribution tank 220 may fall toward the sewer 4.

A washing water supply pipe 225 that receives washing water from the outside is connected to the washing water distribution tank 220. Of course, the washing water supply pipe 225 can be connected to the recycled water pipe (not shown) of the sewer recycling unit. In addition, opening holes are formed in at least a portion of the upper surface of the washing water distribution tank 220, so that it is of course possible to receive rainwater and use it as washing water. Additionally, the washing water distribution tank 220 can also receive water from a separate water pipe or underground water pipe.

The outdoor air fine dust reduction system according to the second embodiment of the present invention configured as described above is removably installed on the upper side of the guard fence 300, so it has the advantage of being easier to install or remove.

Meanwhile, Figure 7 is a diagram schematically showing an installation example of a system for reducing fine dust in outdoor air according to a third embodiment of the present invention.

Referring to FIG. 7, the fine dust reduction system 400 according to the third embodiment of the present invention is installed on the outdoor side of at least one of a window (not shown), an entrance door 420, and an entrance 410. It is different from the examples, and the remaining configuration and operation are similar, so detailed descriptions of similar configurations are omitted.

The washing water distribution tank 220 of the fine dust reduction system 400 is explained as an example of being installed at an entrance 410 where an entrance door 420 is installed to allow access from the outside to the inside.

The entrance 410 may include not only the entrance of the building B such as a school, classroom, or large shopping mall, but also the entrance of an underground parking lot, an underground shopping mall, or a subway station. However, it is not limited to this, and the entrance 410 also includes places where a door is not installed.

The fine dust reduction system 400 is installed on the outdoor side of the door 420 and is installed at a predetermined distance away from the door 420 toward the outdoors.

Additionally, a plurality of fine dust reduction systems 400 may be installed at a predetermined distance apart from the entrance 410 along the passageway P for people to travel. In this embodiment, the fine dust reduction system 400 is arranged long in the direction (Y) perpendicular to the exit direction (X) of the door 420, and two of them are aligned with each other along the exit direction (X). It will be explained as an example that they are arranged to be spaced apart by a predetermined distance.

However, it is not limited to this, and of course, in addition to the entrance 410, it can be installed in various outdoor places such as passageways where people pass, such as outdoor parks or playgrounds. In addition, the fine dust reduction system 400 can of course be installed on the outdoor side of a window.

As described above, by installing the fine dust reduction system 400 on the outdoor side of the door 420, pollutants such as fine dust in the outdoor air can be prevented from entering the room.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

2: road 2a: sidewalk
2b: Driveway 2c: Curb
4: drain 10: case
20: Washing water distribution tank 22: Washing water outlet
30: Washing water dropping unit 40: Waterwheel type water wheel

Claims (21)

a washing water distribution tank installed outdoors, containing washing water therein, and having a plurality of washing water discharge ports formed to distribute and discharge the washing water in the direction of gravity;
A plurality of water wheel-type water wheels are provided at the lower side of the washing water distribution tank and rotated by the flow rate of the washing water discharged from the washing water discharge ports to cause the washing water to freely fall in the form of drops, A system for reducing fine dust in outdoor air including a washing water dropping unit for cleaning the outdoor air naturally circulating below the washing water distribution tank with falling washing water. In claim 1,
The washing water distribution tank,
A system for reducing fine dust in outdoor air installed on the upper side of a sewer to drain the cleaning water that cleans the outdoor air. In claim 2,
The washing water distribution tank,
A system for reducing fine dust in outdoor air mounted on a case that is installed in an upward direction above the drain, has at least one side open to allow outdoor air to pass through, and has a lower surface in communication with the drain. In claim 1,
The washing water distribution tank,
A system for reducing fine dust in outdoor air that is removably attached to the upper side of a road guard fence. In claim 4,
The washing water distribution tank is removably installed on an upper part of a guard fence installed on the curb of the road,
The waterwheel-type water turbines are provided at a position facing a sewer provided in the roadway from the lower side of the washing water distribution tank, and cause the washing water that cleans the outdoor air to fall so that it can be drained into the sewer. abatement system. In claim 1,
The washing water distribution tank,
A system to reduce fine dust in outdoor air installed on the outdoor side of at least one of windows, doors, and entrances. In claim 2,
A system for reducing fine dust in outdoor air, further comprising a sewage recycling unit for recycling at least a portion of the sewage drained through the sewer into the washing water distribution tank to be recycled as washing water. In claim 7,
The sewage recycling unit,
a sewage storage tank for temporarily storing sewage drained through the sewer;
A recycling water pipe connecting the sewage storage tank and the washing water distribution tank to guide at least a portion of the sewage stored in the sewage storage tank to the washing water distribution tank to recycle the sewage;
A system for reducing fine dust in outdoor air including a recycled water pump installed in the recycled water pipe. In claim 7,
The sewage recycling unit,
A system for reducing fine dust in outdoor air, further comprising a sewage filter installed in at least one of the sewage storage tank and the recycled water pipe to filter sewage. In claim 1,
A system for reducing fine dust in outdoor air, wherein a plurality of the washing water discharge ports are formed at a predetermined distance from each other in the longitudinal direction and the width direction of the washing water distribution tank on the lower surface of the washing water distribution tank. In claim 10,
The waterwheel-type water wheel is,
A system for reducing fine dust in outdoor air, which is formed in a long roll shape in the longitudinal direction and has a plurality of pieces arranged in the width direction. In claim 1,
The waterwheel-type water wheel is,
an annular groove formed along the circumferential direction on the outer peripheral surface,
A system for reducing fine dust in outdoor air, comprising a plurality of water-receiving grooves formed at a predetermined distance from each other along the circumferential direction in the annular groove, and temporarily receiving and then discharging the washing water discharged from the washing water discharge ports. In claim 12,
A plurality of the annular grooves are formed at a predetermined distance from each other along the longitudinal direction of the waterwheel-type water turbine,
Among the plurality of annular grooves, the water-receiving groove formed in any one of the first annular grooves is formed at a position offset by a first set distance in the circumferential direction from the water-receiving groove formed in the second annular groove adjacent to the first annular groove. Medium fine dust reduction system. In claim 12,
The water-receiving groove formed in any one of the plurality of waterwheel-type waterwheels is a second set distance in the longitudinal direction of the waterwheel-type waterwheel from the water-receiving groove formed in the other second waterwheel adjacent to the first waterwheel. A fine dust reduction system in outdoor air formed at an offset location. In claim 12,
A system for reducing fine dust in outdoor air, wherein the water catch groove is deeper than the annular groove and has a larger cross-sectional area. In claim 12,
The water catch groove is,
A system for reducing fine dust in outdoor air formed in a long direction inclined at a predetermined angle from the radial direction of the waterwheel type water wheel. In claim 1,
The waterwheel-type water wheel includes a plurality of water receiving grooves that receive the washing water discharged from the washing water discharge port and then discharge it in the form of drops,
A system for reducing fine dust in outdoor air, wherein the plurality of water catch grooves are formed at predetermined intervals along the circumferential and longitudinal directions on the outer peripheral surface of the water wheel type water wheel. In claim 1,
The waterwheel-type water wheel is,
A cylindrical portion formed in a long cylindrical shape in the longitudinal direction and having a plurality of water-receiving grooves formed on its outer circumferential surface for temporarily receiving the washing water discharged from the washing water discharge port and then discharging it in the form of drops;
a rotating shaft provided at the center of the cylindrical portion to rotate the cylindrical portion;
A system for reducing fine dust in outdoor air further comprising a motor that drives the rotating shaft. In claim 1,
The washing water dropping unit,
A system for reducing fine dust in outdoor air, further comprising water wheel interlocking means for connecting the plurality of water wheel-type water wheels and rotating them simultaneously. In claim 19,
The aberration interlocking means is,
A system for reducing fine dust in outdoor air, including a gear unit provided on each outer peripheral surface of the waterwheel-type waterwheels and gearing the adjacent waterwheel-type waterwheels to each other. a washing water distribution tank installed outdoors, containing washing water therein, and having a plurality of washing water discharge ports to distribute and discharge the washing water in the direction of gravity;
Including a plurality of waterwheel-type water wheels provided at the lower side of the washing water distribution tank and configured to freely fall the washing water in the form of drops while rotating according to the flow rate of the washing water discharged from the washing water discharge ports, It includes a washing water dropping unit for cleaning the outdoor air naturally circulating below the washing water distribution tank with falling washing water,
The washing water distribution tank is installed on an upper side of the sewer to drain the washing water that has cleaned the outdoor air,
A plurality of the washing water discharge ports are formed on the lower surface of the washing water distribution tank, spaced apart from each other at a predetermined distance in the longitudinal direction and the width direction of the washing water distribution tank,
The waterwheel-type water turbine includes an annular groove formed along the circumferential direction on the outer peripheral surface, and a plurality of grooves formed along the circumferential direction in the annular groove, spaced apart from each other at a predetermined distance, to temporarily receive the washing water discharged from the washing water discharge ports. A system for reducing fine dust in outdoor air that includes grooves for discharging water after discharge.

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