JP2002098384A - Contaminated air-cleaning device and method of road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably clean contaminated air such as an exhaust gas without any diffusion in a device and a method for cleaning contaminated air in a road. SOLUTION: By forming an air curtain 21 at the entrance of a vehicle by an air curtain device 18 that is provided at a ceiling 17 of an intersection 13, the intersection 13 is divided, a ventilation device 22 starts operating when the concentration of smoke and dust measured by a smoke and dust concentration sensor 30 exceeds a reference value, air in the intersection 13 is sucked from a suction duct 25 for collecting and removing smoke and dust such as a suspended particle matter by a dust collector 27, and clean air is released to the atmosphere from a discharge silencing duct 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for purifying contaminated air on a road, which collects and removes dust in an area where traffic of vehicles is large, such as intersections, toll collection points, and tunnels.

[0002]

2. Description of the Related Art In recent years, air pollution due to exhaust gas from automobiles has been remarkable, and especially in large urban areas where automobile traffic is concentrated, suspended particulate matter (SPM) has been changing at a high concentration. There is a strong demand for improvements in the air environment around buildings and road tunnels.

[0003] An apparatus for purifying NOx in exhaust gas, which is installed at an intersection of a motorway in a large city or the like, is disclosed in, for example, Japanese Patent No. 3045992. The "low-concentration nitrogen oxide removing device" disclosed in this publication installs a box-shaped main body having an intake port on the road side and an exhaust port on the upper side along a road intersection, and dusts in the main body. It is provided with a filtration filter, an alkaline filter for removing and absorbing acidic gas, and a blower.

[0004]

In the above-mentioned conventional "low-concentration nitrogen oxide removing apparatus", the main body of the apparatus is installed along the road at the intersection of roads, so that the exhaust gas is sucked in from the intake port and the exhaust gas is internally discharged. NOx can be purified.
However, the suspended particulate matter in the exhaust gas is so small that it stays for a long time and moves upward, so it cannot be sufficiently sucked in by the devices installed along the road intersection, and diffuses to the surroundings. In addition, the exhaust gas cannot be reliably purified.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an apparatus and a method for purifying contaminated air on roads which can surely purify contaminated air such as exhaust gas without diffusing it. .

[0006]

According to a first aspect of the present invention, there is provided an apparatus for purifying contaminated air on a road, comprising an air curtain device for partitioning a dust generating area on the road. A dust collecting device for collecting and removing dust in the area is provided.

According to a second aspect of the present invention, there is provided an apparatus for purifying a polluted air on a road, wherein a ceiling is formed by a plurality of pillars or side walls so as to cover above the dust generating area, and a vehicle entrance to the dust generating area is provided. The air curtain device is provided at the entrance of the vehicle.

According to a third aspect of the present invention, there is provided an apparatus for purifying contaminated air on a road, further comprising a dust concentration sensor for measuring the concentration of dust in the dust generation area, wherein the dust concentration measured by the dust concentration sensor is a reference value. The system is characterized in that the dust collector is operated when the distance exceeds the limit.

According to a fourth aspect of the present invention, there is provided an apparatus for purifying contaminated air on a road, comprising a traffic sensor for measuring a traffic volume of a large vehicle passing through the dust generating area, and a large vehicle measured by the traffic sensor. When the traffic volume exceeds the reference traffic volume, the dust collector is operated.

Further, in the apparatus for purifying contaminated air on a road according to the present invention, a denitration apparatus is provided downstream of the dust collecting apparatus, and a deodorizing apparatus is provided in the discharge silencing duct.

Further, the apparatus for purifying contaminated air on a road according to the invention of claim 6 is characterized in that a supply path for supplying the air purified by the dust collector to the air curtain device is provided.

A method for purifying contaminated air on a road according to a seventh aspect of the present invention is characterized in that a dust generating area on the road is partitioned by an air curtain, and dust in the dust generating area is collected and removed. is there.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a schematic configuration of a device for purifying contaminated air on a road according to a first embodiment of the present invention, and FIG. 2 shows a cross section of the ventilation device of the present embodiment.

In the first embodiment, a case will be described in which the apparatus for purifying contaminated air on a road of the present invention is applied to an intersection as a dust generating area on a road. As shown in FIGS. 1 and 2, an intersection 13 at which two motorways 11 and 12 intersect.
Is provided with a traffic light 14 and a crosswalk 15. At this intersection 13, columns 16 are provided upright so as not to obstruct traffic, and a ceiling 17 is formed by each column 16.

An air curtain device 18 is provided at a vehicle entrance to the intersection 13. That is, the ceiling 1
A suction duct 19 and a compressor 20 are installed in the upper part of the ceiling 7, and the air curtain device 18 is built in each cross beam 18 of the ceiling 17 and is connected by piping.
Therefore, when the compressor 20 is operated, the suction duct 1
9 is supplied to an air curtain device 18 and blows air downward from a downward nozzle (or slit) (not shown), so that an air curtain 21 can be generated at the vehicle entrance / exit of the intersection 13. By generating the air curtain 21 at the vehicle entrance, the intersection 13 can be partitioned.

The intersection 13 has an air curtain 2.
1 for purifying air in an area defined by 1
Is provided. That is, a box-shaped device main body 23 is installed at the upper part of the ceiling 17, a suction duct 25 having a plurality of guide vanes 24 is formed at one end of the device main body 23, and a suction hole formed at the ceiling 17 is formed. 26. The suction duct 2 is provided in the apparatus main body 23.
A dust collecting device 27 that collects and removes dust and a blower 28 are mounted adjacent to 5, and a discharge muffling duct 29 is formed downstream thereof.

Therefore, when the dust collecting device 27 and the air blower 28 are operated, the intersection 1 defined by the air curtain 21
The air in the area 3 is sucked into the suction duct 25 through the suction hole 26, so that dust such as suspended particulate matter can be collected and removed by the dust collecting device 27, and the purified air passes through the discharge silencing duct 29. Released to the atmosphere.

The dust collector 27 has a processing flow rate of 3
An electric precipitator with a high air flow of at least m / s is suitable.

Further, a dust concentration sensor 30 for measuring the concentration of dust in the air in the area of the intersection 13 defined by the air curtain 21 is provided below the ceiling 17.
When the dust concentration measured by the dust concentration sensor 30 exceeds a predetermined reference value set in advance, the ventilation device 2 described above is used.
2 is running.

In the thus constructed apparatus for purifying contaminated air on a road according to this embodiment, a ceiling 17 is formed by a plurality of columns 16 at an intersection 13, and an air curtain device 18 is provided on each cross beam 18 of the ceiling 17. The air that is drawn from the suction duct 19 by the compressor 20 is supplied to each of the air curtain devices 18 and is blown out from the nozzles to the vehicle entrance to the intersection 13 to define the intersection 13. In this case, the dust concentration sensor 30 measures the concentration of the dust in the intersection 13 and, when the dust concentration exceeds the reference value, issues a command to the ventilator 22 to operate it. That is, the dust collecting device 27 and the air exhaust device 28 are operated, the air in the intersection 13 is sucked from the suction duct 25, dust and dust such as suspended particulate matter are collected and removed by the dust collecting device 27, and the clean air is discharged and discharged. Released to the atmosphere through 29.

Accordingly, since the intersection 13 is divided on four sides by the air curtain 21 of the air curtain device 18, the exhaust gas discharged from the vehicle in the intersection 13 does not diffuse to the outside, and the concentration of the dust due to the exhaust gas is reduced. When ascending, the ventilator 22 is operated, so that dust such as suspended particulate matter is collected and removed by the dust collector 27, so that the polluted air such as exhaust gas can be reliably purified without diffusing.

FIGS. 3 to 6 show a schematic configuration of a device for purifying contaminated air on a road according to another embodiment of the present invention, and FIG. 7 shows a cross section of a ventilation device according to another embodiment of the present invention. Note that members having the same functions as those described in the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.

In the second embodiment, the apparatus for purifying contaminated air on a road according to the present invention is applied to an intersection as a dust generating area on the road, and the area defined by the air curtain is expanded to vehicles stopping at the intersection. That is, as shown in FIG. 3, a signal 14 and a pedestrian crossing 15 are provided at an intersection 13 where the two motorways 11 and 12 intersect, and sidewalls () are provided on both sides of the lane on the entrance side of the intersection 13. Or support) 3
The ceiling 1 is formed by the plurality of side walls 31.

An air curtain device 18 is provided at each of the entrances and exits of the vehicle to the intersection 13, and each of the intake ducts 19 and the compressor 2 installed on the ceiling 32.
Connected to 0. In addition, a suction duct 25, a dust collector 27, a blower 28,
A ventilation device 22 having a built-in discharge silencing duct 29 and the like is provided. Further, a dust concentration sensor 30 is provided below the ceiling 32.

Therefore, the ceiling 32 formed by the plurality of side walls 31 is extended to the vehicle that stops at the intersection 13 and stops at the intersection 13 by blowing air downward from the nozzles of each air curtain device 18. A part of the intersection 13 is divided into the intersection 13 including the vehicle.
Exhaust gas retained inside the vehicle or exhaust gas discharged from a vehicle stopped at the intersection 13 is not diffused to the outside, and dust such as suspended particulate matter can be collected and removed by the dust collecting device 27 and purified.

In the third embodiment, the apparatus for purifying contaminated air on a road of the present invention is applied to an intersection as a dust generating area on a road, and an air curtain is formed by air purified by a ventilation device. That is, as shown in FIG. 4, a ceiling 17 is formed by a plurality of columns, and the ceiling 17 is provided with an air curtain device 18 that generates an air curtain at a vehicle entrance to an intersection 13. 20. Further, on the ceiling 17, a ventilation device 22 is installed in which a suction duct 25, a dust collection device 27, an exhaust fan 28, a discharge muffling duct 29 and the like are built in a device main body 23. The discharge silencing duct 29 and each suction duct 19 are connected by a supply pipe 41.

Therefore, the exhaust gas that has accumulated in the intersection 13 is collected and removed by the dust collector 27 and purified, and the purified air thus purified is supplied to the compressor 20 through the intake duct 19 by the supply pipe 41, and further purified by the air. Since the air is supplied to the curtain device 18, the intersection 13 is partitioned by the clean air blown out from the nozzles of each air curtain device 18, and the environment of the pedestrian can be improved by purifying the air near the pedestrian crossing 15. .

Further, in the fourth embodiment, the apparatus for purifying contaminated air on a road of the present invention is applied to an underground intersection as a dust generating area on the road. That is, as shown in FIG.
The two motorways 51 and 52 intersect through an underground tunnel to form an intersection (not shown). An air curtain device 53 for generating an air curtain is provided above the tunnel entrance to this intersection, and a park above the intersection is provided. A ventilation device 55 is provided at 54 for purifying the exhaust gas in the intersection and releasing it to the atmosphere. In addition, this ventilation device 55 has a suction duct, a dust collection device,
It has an exhaust fan, a discharge silencing duct, and the like.

Accordingly, the air curtain device 53 forms an e-curtain at the entrances and exits of the tunnels of the two motor roads 51 and 52, so that the underground portion serving as the intersection is partitioned, and the exhaust gas that has accumulated at the underground intersection is discharged to the outside. Dust such as suspended particulate matter can be collected and removed by a ventilation device (dust collection device), and clean air can be released to the atmosphere.

In the fifth embodiment, the apparatus for purifying contaminated air on a road according to the present invention is applied to an expressway toll collection station serving as a dust generating area on the road. That is, as shown in FIG.
3 forms a ceiling 64. An air curtain device 65 is provided at the entrance of the vehicle to the tollgate 62, that is, at the ceiling 64.
And the compressor 67. In addition, ceiling 6
4 is provided with a suction duct 68 having one end communicating with a region below the ceiling 64, and a dust collecting device 69, a blower 70, and a discharge muffle duct 7 provided at the other end beside the tollgate 62.
1 is connected to a ventilation device 72. Reference numeral 73 denotes a toll booth.

Therefore, an air curtain is formed by each air curtain device 65 at the vehicle entrance and exit of the tollgate 62 to divide the tollgate 62, and the exhaust gas discharged from the vehicle in the tollgate 62 diffuses outside. No, toll booth 6
2 is sucked from the suction duct 68 and the dust collection device 6
At 9, dust such as suspended particulate matter is collected and removed, and clean air is released to the atmosphere through the discharge silencing duct 71, so that polluted air such as exhaust gas can be reliably purified without diffusing.

Further, in the sixth embodiment, the ventilation device constituting the apparatus for purifying contaminated air on roads of the present invention has a denitration function and a deodorization function. That is, as shown in FIG. 7, in the ventilation device 81, a box-shaped device main body 23 is installed above the ceiling 17, and a suction duct 25 having a plurality of guide vanes 24 at one end of the device main body 23. Is formed and connected to a suction hole 26 formed in the ceiling 17. A dust collecting device 27, a denitration device 82, and an air blower 28 are mounted inside the device main body 23 adjacent to the suction duct 25, and a deodorizing device 8 is attached to a discharge silencing duct 29 on the downstream side thereof.
3 are provided.

Therefore, when the ventilator 81 is operated, air in the area defined by the air curtain below the ceiling 17 is sucked into the suction duct 25 through the suction holes 26, and the particulate matter 27 collects air or the like. The NOx is removed by the denitration device 82, and the purified air is further deodorized by the deodorization device 83 of the discharge silencing duct 29 and released to the atmosphere. Can be purified.

In the above-described embodiment, the dust concentration sensor 30 for measuring the concentration of dust in the dust generation area such as the intersection 13 is provided, and when the dust concentration measured by the dust concentration sensor 30 exceeds the reference value. Although the ventilation device 22 was operated, a traffic sensor for measuring the traffic of a large vehicle passing through the dust generation area was provided, and the traffic of the large vehicle measured by the traffic sensor was equal to the reference traffic. The ventilation device 22 may be operated when it exceeds.

The air curtain devices 18, 53, 65
, The air may be blown downward. However, the air may be simultaneously sucked from below according to the amount of air blown, or the air may be blown upward or to the side. In addition, the air curtain devices 18, 53,
Although the ceiling 65 is provided on each of the mounting ceilings 17, 32, and 64, for example, an expressway or a building may be used as the ceiling. Furthermore, an air conditioner is connected to the air curtain device,
You may control the air temperature etc. of a pedestrian crossing.

Further, it is also possible to discharge floating mist by discharging mist into the dust generating area defined by the air curtain device.

[0038]

As described in detail in the above embodiment, according to the apparatus for purifying contaminated air on a road according to the first aspect of the present invention, an air curtain device for dividing a dust generating area on the road is provided, and A dust collection device that collects and removes dust in the generation area is provided, so the dust generation area is divided by an air curtain, so that dust on the road is not diffused to the outside and dust such as suspended particulate matter is collected. The apparatus can collect and remove the air reliably, and can surely purify the air without diffusing the polluted air such as the exhaust gas.

According to the apparatus for purifying contaminated air on a road according to the second aspect of the present invention, a ceiling is formed by a plurality of pillars or side walls so as to cover above the dust generating area, and a vehicle entrance to the dust generating area is formed. Since the air curtain device is provided at the entrance and exit of the vehicle, it can be easily installed at an intersection or the like.

According to the third aspect of the present invention, there is provided a dust concentration sensor for measuring the concentration of dust in the dust generation area, and the dust concentration measured by the dust concentration sensor exceeds a reference value. Since the dust collector is sometimes operated, the dust collector is operated only when necessary with a simple configuration, which can contribute to energy saving.

According to the apparatus for purifying contaminated air on a road according to the fourth aspect of the present invention, a traffic sensor for measuring the traffic of a large vehicle passing through the dust generating area is provided, and the traffic of the large vehicle measured by the traffic sensor is measured. Since the dust collector is operated when the amount exceeds the standard traffic volume, the dust collector is operated according to the amount of exhaust gas emitted by large vehicles, enabling efficient operation. it can.

According to the apparatus for purifying contaminated air on a road according to the fifth aspect of the present invention, a denitration device is provided downstream of the dust collector, and a deodorization device is provided in the discharge silencing duct. In addition to being able to be removed, deodorizing treatment can be performed by a deodorizing device, and purification performance can be improved.

According to the apparatus for purifying contaminated air on a road according to the sixth aspect of the present invention, since the supply path for supplying the air purified by the dust collector to the air curtain device is provided, the air curtain formed by the air curtain device is provided. Becomes clean air and can improve the surrounding environment.

According to the method for purifying contaminated air on a road according to the seventh aspect of the present invention, the dust generating area on the road is divided by the air curtain, and the dust in the dust generating area is collected and removed. Since the area is partitioned by air curtains, dust on the road can be reliably collected and removed by a dust collector without dispersing dust on the road to the outside, and contaminated air such as exhaust gas can be diffused. Purification can be performed without any need.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a road contaminated air purification device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the ventilation device of the present embodiment.

FIG. 3 is a schematic configuration diagram of a road contaminated air purification device according to a second embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a road polluted air purification device according to a third embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of an apparatus for purifying contaminated air on a road according to a fourth embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of a road polluted air purification device according to a fifth embodiment of the present invention.

FIG. 7 is a cross-sectional view of a ventilation device according to a sixth embodiment of the present invention.

[Explanation of symbols]

 11, 12, 51, 52, 61 Road 13 Intersection (dust generation area) 17, 32, 64 Ceiling 18, 53, 65 Air curtain device 19, 66 Suction duct 20, 67 Compressor 21 Air curtain 22, 55, 72, 81 Ventilation device 25,68 Suction duct 27,69 Dust collector 28,70 Dust exhaust device 29,71 Discharge silencing duct 2 30 Dust concentration sensor 41 Supply pipe 62 Toll gate (dust generation area) 82 Denitration device 83 Deodorization device

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B03C 3/02 E01C 1/00 Z 3/34 F24F 7/00 A 3/68 B01D 53/34 ZAB E01C 1/00 116Z F24F 7/00 129Z (72) Inventor Hidehiko Otani 1-1-1, Wadazakicho, Hyogo-ku, Hyogo-ku, Kobe City, Hyogo Prefecture Inside Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Kazuaki Miyake Wadazaki, Hyogo-ku, Hyogo Prefecture 1-1-1, Machi Kobe Shipyard, Mitsubishi Heavy Industries, Ltd. F-term (reference) 2D051 AA05 4D002 AA12 AB02 BA14 EA02 GA02 GA03 4D054 AA01 AA07 CA12 CA20 EA08 EA14 EA21 EA27 EA30

Claims (7)

[Claims] 1. A contaminated air purification device for a road, comprising: an air curtain device for dividing a dust generation area on a road; and a dust collection device for collecting and removing dust in the dust generation area. 2. The apparatus for purifying contaminated air on a road according to claim 1, wherein a ceiling is formed by a plurality of columns or side walls so as to cover above the dust generating area, and a vehicle entrance to the dust generating area is formed. An apparatus for purifying contaminated air on a road, wherein the air curtain device is provided at the entrance of the vehicle. 3. The apparatus for purifying contaminated air on a road according to claim 1, further comprising a dust concentration sensor for measuring a concentration of dust in the dust generation area, wherein the dust concentration measured by the dust concentration sensor exceeds a reference value. A device for purifying contaminated air on roads, wherein the dust collector is operated when the air is discharged. 4. The apparatus for purifying contaminated air on a road according to claim 1, further comprising a traffic sensor for measuring a traffic volume of a large vehicle passing through the dust generating area, wherein the traffic sensor measures the traffic volume of the large vehicle. A contaminated air purification device for a road, wherein the dust collector is operated when a traffic amount exceeds a reference traffic amount. 5. The apparatus for purifying contaminated air for roads according to claim 1, wherein a denitration device is provided downstream of the dust collector, and a deodorization device is provided in the discharge silencing duct. Air purification device. 6. The apparatus for purifying contaminated air on a road according to claim 1, further comprising a supply path for supplying air purified by said dust collector to said air curtain device. apparatus. 7. A method for purifying contaminated air on a road, wherein a dust generation area on a road is divided by an air curtain, and dust in the dust generation area is collected and removed.