JP3239153B2 - Pedestrian air purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus for purifying contaminated air using plants and soil provided in a median strip.

[0002]

2. Description of the Related Art Exhaust gas emitted from vehicles contains a large amount of pollutants such as carbon monoxide, nitrogen oxides and dust, and pollutes the atmosphere. In particular, on a large automobile road in which a median strip is provided, the traffic volume is large, and the traffic is congested.

[0003]

Therefore, where a sidewalk is provided along such a high-traffic motorway, pedestrians must walk on the sidewalk under polluted air. Must. On the other hand, a plant is provided in the median strip, and the soil on which the plant is planted is known to have an air purification effect. The present invention was devised by focusing on the planting and soil provided in the median strip, and an object of the present invention is to contaminate air using the planting and soil provided in the median strip. It is an object of the present invention to provide a pedestrian air purification device that purifies air and blows clean air onto a sidewalk to give a pedestrian a sense of comfort.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a pedestrian air purifying device provided over a median strip provided on an automobile road and a sidewalk, provided at the median strip. Soil, which allows plants to be planted and allows air to flow in the vertical direction, an air outlet provided on the sidewalk side, and buried from the bottom of the soil to the sidewalk side and connected to the air outlet. Tube, an air suction unit provided on the bottom side of the soil in the tube, and a fan connected to the tube and flowing air from the air suction unit to the air outlet side. Features.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a half plan view of an automobile road and a sidewalk on which a pedestrian air purification device is installed, FIG.
FIG. 3 is an enlarged cross-sectional view of the main part. 1 is an automobile road,
3 is a sidewalk, 5 is a median strip, 7 is a road pavement, 9 is a pedestrian air purifier, sidewalk 3 is provided on both sides of the automobile road 1, and a pedestrian air purifier 9 is a median strip. 5 and both sidewalks 3 respectively. The median strip 5 is partitioned by a pair of curbs 11 installed near the center of the road pavement 7, and a tree 1 is located between the pair of curbs 11.
The soil 15 in which 3 is planted is provided. The pedestrian air purification device 9 is provided on the soil 15
And a perforated pipe 17 buried in the bottom of the soil 15
And an air outlet 19 provided on the sidewalk 3 side, a connecting pipe 21 connecting the perforated pipe 17 and the air outlet 19, and a fan 23 interposed in the connecting pipe 21. In the example, the perforated pipe 17 corresponds to an air suction portion, and the perforated pipe 17 and the connecting pipe 21 correspond to a pipe.

The soil 15 is a soil in which microorganisms can propagate, for example, black soil. The soil 15
The porosity is increased by mixing pearlite or the like based on the above-mentioned black soil or the like so that air can flow in the vertical direction. Furthermore, the bottom of the soil 15 is a crushed stone layer 25.
The perforated pipe 17 is buried in the middle part of the crushed stone layer 25 at the depth.

The perforated pipes 17 are respectively provided near the curbs 11 corresponding to the sidewalks 3 and extend along the curbs 11. In this embodiment, the perforated pipe 17 has a diameter of about 300 with a large number of holes penetrating the outer peripheral surface thereof.
A pipe of about 400 mm and a length of about 50 m is used. Boxes 27 are respectively buried in the portion between the central part in the longitudinal direction of the perforated pipe 17 and the curb 11, and the connecting pipe 21 watertightly seals the box 27 from the central part in the longitudinal direction of each perforated pipe 17. And extends under the road pavement 7 toward the corresponding sidewalk 3 side. The fan 23 is provided at a portion of the connection pipe 21 passing through the inside of the box 27, and a lid 29 is attached to the top of the box 27 so as to be openable and closable.

In this embodiment, a planting zone 33 is also provided on the sidewalk 3 side, which is partitioned by the curb 31 into a rectangular shape in plan view. The planting zone 33 is composed of trees 35 and soil 37, and the air outlet 19 is buried in the portion of the soil 37 near the road pavement 7. The air outlet 19 is open upward and elongated along the curb 31. The tip of the connecting pipe 21 is bent upward from the lower part of the soil 15, and the upper end of the bent part is the air It is connected to the outlet 19.

Next, the operation will be described. The power is connected and the fan 23 is rotated. By the rotation of the fan 23, the air in the crushed stone layer 25 is sucked in from the perforated pipe 17, and is blown out from the air outlet 19 through the connecting pipe 21. By the suction of the air in the crushed stone layer 25, the contaminated air is sucked from the surface of the soil 15 and flows toward the crushed stone layer 25.

[0010] When the contaminated air passes through the soil 15, dust is trapped and impurities such as hydrocarbon gas such as methane are adsorbed by the physical action of the soil 15 as a filter. In addition, microorganisms decompose pollutants such as impurity components. Aerobic microorganisms proliferate on the surface of the soil 15 or on the part where air flows inside the soil 15, and anaerobic microorganisms proliferate on the part where the air does not flow inside the soil 15, and these microorganisms For example, carbon monoxide is mainly converted to carbon dioxide, nitric oxide is mainly converted to nitrate ions, and methane gas is mainly converted to carbon dioxide Decomposes into water and thus removes contaminants. That is, clean air from which contaminants have been removed is blown out onto the sidewalk 3 from the air blow-out opening 19.

As described above, according to the present embodiment, the trees 13 and the soil 15 provided in the median strip 5 are used to purify the contaminated air and blow out the clean air to the sidewalk 3 side. Therefore, clean air drifts on the sidewalk 3 side along the automobile road 1, and pedestrians can inhale clean air. In addition, clean air drifts on the sidewalk 3 side,
The pedestrian on the sidewalk 3 can be given a sense of comfort.

In the embodiment, in order to allow air to flow from the surface of the soil 15 to the air outlet 19 side, the bottom of the soil 15 is constituted by a crushed stone layer 25, and a perforated pipe 17 is embedded in the crushed stone layer 25. However, a space may be partitioned by a perforated plate or the like at the bottom of the soil 15 and air may be sucked into the connection pipe 21 from this space. In addition, when a pipe having a large number of holes penetrating only in the downward outer peripheral surface portion thereof is used as the perforated pipe 17, rainwater can be prevented from entering the pipe 17 without providing a drainage portion or the like. Is advantageous. In addition, various structures and arrangements of the air outlet 19 are conceivable, and are not limited to the structure of the embodiment and are arbitrary.

[0013]

As is clear from the above description, the present invention
A pedestrian air purification device provided over a median strip and a sidewalk provided on a road for automobiles, wherein the soil is provided on the median strip and is provided with plants and allows air to flow vertically. An air outlet provided on the sidewalk side, a pipe buried from the bottom of the soil to the sidewalk side and connected to the air outlet, and air provided on the bottom side of the soil in the pipe body Since it is provided with a suction part and a fan connected to the pipe body and for flowing air from the air suction part to the air outlet side, clean air is provided by using planting and soil provided in the median strip. It can be blown upward, which can give a sense of comfort to pedestrians on the sidewalk.

[Brief description of the drawings]

FIG. 1 is a half plan view of an automobile road and a sidewalk on which a pedestrian air purification device is installed.

FIG. 2 is a sectional front view of an automobile road and a sidewalk on which a pedestrian air purification device is installed.

FIG. 3 is an enlarged sectional view of a main part of an automobile road and a sidewalk on which a pedestrian air purification device is installed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile road 3 Sidewalk 5 Median strip 7 Road pavement 9 Pedestrian air purification device 13 Tree 15 Soil 17 Perforated pipe 19 Air outlet 21 Connection pipe 23 Fan

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-141691 (JP, A) JP-A-7-24244 (JP, A) JP-A-7-24245 (JP, A) JP-A-7-244 24243 (JP, A) JP-A-6-315609 (JP, A) JP-A-5-137947 (JP, A) JP-A-63-181426 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 7/00 B01D 53/02 B01D 53/34 E01C 1/00

Claims (1)

(57) [Claims] 1. A pedestrian air purification device provided over a median strip and a sidewalk provided on an automobile road, wherein a plant is planted and air flows in a vertical direction provided in the median strip. And an air outlet provided on the sidewalk side, a pipe buried from the bottom of the soil to the sidewalk side and connected to the air outlet, and a bottom side of the soil in the pipe body A pedestrian air purification device, comprising: an air suction unit provided in the air conditioner; and a fan connected to the pipe and flowing air from the air suction unit to the air outlet side.