JP2003290683A - Removal system for floating particulate substance in atmosphere - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a removal system for a floating particulate substance unnecessary to be attached to an individual diesel vehicle and advantageous from an aspect of cost or durability. <P>SOLUTION: The removal system for the floating particulate substance in the atmosphere is equipped with a suction port 2 provided so as to be exposed to the surface of the ground, the dust collection part 3 connected to the suction port 2 and embedded in the ground, a suction part 4 for sucking the atmosphere to the dust collection part 3 from the suction port 2 and a power supply 5 for operating the suction part 4. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a system for removing airborne particulate matter in the atmosphere.

[0002]

2. Description of the Related Art Suspended particulate matter (hereinafter abbreviated as "SPM") is a general term for particles with a diameter of 10 microns or less that float in the atmosphere.
Environmental standards of mg or less are set. SPM includes soot from the factory, diesel exhaust gas particulates, dust,
It also includes salt particles from the sea. About 30-40% of SPM
It is regarded as diesel exhaust gas particulates (hereinafter abbreviated as "DEP").

The DEP is a fine particle having a diameter of 1 micron or less, and is mainly composed of a fine particle solid component in which carbon fine particles are aggregated and a liquid organic component. The solid component grows in the form of chain-like connection, and when the concentration increases, it is recognized as black smoke. The black smoke emitted from the diesel engine is called particulate, and is composed of soot, sulfur content derived from the gas oil component, unburned gas oil, and unburned oil of engine oil.

Since DEP is a fine particle, it easily enters the back of the lungs and trachea and causes not only bronchial asthma and emphysema, but also contains carcinogens, which may affect lung cancer and reproductive abnormalities on the human body. There is concern.

At present, various measures for reducing particulates, such as a method of reforming light oil itself and a method of mounting a harmful component removing device on each diesel vehicle, are considered, but the former is economical. But not the latter
It has to be installed on each diesel vehicle, which is problematic in terms of cost and durability.

[0006]

SUMMARY OF THE INVENTION In view of the above situation, it is an object of the present invention to provide an SPM removal system which does not need to be mounted on each diesel vehicle and is advantageous in terms of cost and durability. .

[0007]

According to the present invention, the above problems can be solved as follows. (1) A suction port that is exposed on the ground, a dust collecting unit that is connected to this suction port and is buried in the ground, a suction unit that sucks air from the suction port to the dust collecting unit, and the suction unit A system for removing airborne particulate matter in the atmosphere, comprising:

(2) In the above item (1), the suction port is provided integrally with the guard rail.

(3) In the above item (2), the suction port is formed by opening the vicinity of one end of the pipe integrated with the leg portion of the guardrail at the rail portion or leg portion of the guardrail, and the other end is also formed. To the dust collector.

(4) In any one of the above items (1) to (3), the power source is a solar cell.

(5) In the above item (4), a power storage unit for storing the electric energy obtained by the solar cell is provided.

(6) In any one of the above items (1) to (5), a sensor for detecting the concentration of airborne particulate matter in the atmosphere is provided, and depending on the detected concentration, the suction unit or the dust collecting unit can be controlled. An operation control unit that controls the start / stop of operation or the operation status during operation is provided.

(7) In any one of the above items (1) to (5), the start / stop of the operation of the suction section or the dust collecting section or the control of the operating state during the operation is performed according to a predetermined program. An operation control unit is provided.

(8) In the above item (7), the program is automatically created based on the past data on the change in the concentration of airborne particulate matter in the atmosphere obtained by the sensor over time. Provide a program creation section.

(9) In the above item (7) or (8),
A storage unit that stores the electric energy obtained by the solar cell is provided, and the program is automatically created so as to be operable for a predetermined time within the amount of electric energy stored in the storage unit. Provide a program creation section.

(10) In the above item (7) or (8),
A power storage unit that stores the electric energy obtained by the solar cell, and an electric energy amount prediction calculation unit that calculates the electric energy amount expected to be obtained by the solar cell within a predetermined time based on weather forecast data. And the amount of electric energy stored in the power storage unit,
A program creating unit is provided for automatically creating a program so that the program can be operated for a predetermined time within the total electric energy amount of both the predicted electric energy amount calculated by the electric energy amount prediction calculation unit.

(11) In any one of the above items (1) to (10), a collection tank for collecting the suspended particulate matter collected by the dust collecting section is connected to the dust collecting section.

(12) In any one of the above items (1) to (11), at least one of the dust collecting section, the suction section, and the recovery tank.
The above is housed in a box which has an opening leading to the ground and is buried in the ground.

[0019]

1 is a diagram showing an embodiment of an SPM removing system (1) of the present invention. SPM of the present invention
The removal system (1) of the above, the suction port (2a) exposed and installed on the ground, the dust collecting section (3) buried in the ground by connecting to the suction port (2a), and the atmosphere described above. From the suction port (2a) to the dust collecting part
It is composed of a suction unit (4) for suctioning to (3) and a power supply (5) for operating the suction unit (4).

The concentration of SPM in the atmosphere is generally particularly high at an intersection where a diesel vehicle (6) waits for a signal (7). Therefore, it is desirable that the suction port (2a) in the removal system (1) be provided around the intersection. This suction port (2a) may be provided independently, but in particular, if it is provided integrally with the guardrail (8), it is not necessary to separately provide its own equipment, which is advantageous in terms of appearance and cost. is there. In addition to the suction port (2a), a discharge port (2b) for discharging the SPM-removed atmosphere to the outside is provided.

FIG. 2 shows the suction port (2a) and the discharge port in FIG.
It is a perspective view of the guardrail (8) provided integrally with (2b). A suction port (2a) is provided in the vicinity of one end of a pipe (10) arranged and integrated in the leg portion (9) of the guardrail (8),
The outer surface of (9) is opened. The other end of the pipe (10) is connected to the dust collecting part (3). The discharge port (2b) can be provided, for example, by dividing the pipe (10) into an outward path and a return path and opening the end of the return path.

A solar cell (12) and a storage battery (13) are provided on the back side of the rail portion (11) of the guard rail (8).
The electric energy obtained by (12) is once stored in the storage battery (13) and then used to operate the suction part (4). Incidentally, if necessary, instead of the solar cell (12),
Alternatively, a general battery can be used together with the solar battery (12). It is usually desirable to store ordinary batteries and accumulators in an underground box.

As shown in FIG. 3, the suction port (14a),
The discharge port (14b) has a pipe (1) whose lower end is connected to the dust collecting part (3).
5) via the inside of the leg part (17) of the guardrail (16), extend along the length direction of the rail part (18), and open it on the outer surface of the rail part (18). Good.

The dust collecting part (3) and the suction part (4) are housed in a box (19) made of concrete or the like and buried in the ground. The atmosphere containing SPM is sucked into the dust collecting section (3) from the suction port (2a) by the suction section (4), for example, a suction pump. SPM in the air is collected in the dust collecting section (3), and the SPM-removed air is discharged to the outside through the discharge port (2b).

The dust collector (3) may be an electric dust collector, a chemical dust collector, or the like, but the electric dust collector is preferably used from the viewpoint of stability of dust collecting ability and easy maintenance. It is desirable to use a solar cell (12) as the power source of the electric dust collector. In addition, for example, a ceramic filter is favorably used as the dust collecting portion (3). The dust collecting part (3) is
It is preferable to remove the adhered SPM regularly or irregularly by backwashing with a liquid or gas as appropriate.

By using the solar cell (12), it is possible to save energy and to supply a large amount of electric energy during the daytime when the diesel vehicle (6), which is the main cause of SPM, is in a lot of traffic.

The suction section (4) or the dust collection section (3) does not always need to be operated at all times, and it is better to start or stop the suction section (4) or the dust collection section (3) according to the concentration of SPM in the atmosphere in terms of energy saving. It is advantageous. For that purpose, a sensor (20) for detecting the concentration of SPM in the atmosphere is provided, and the suction unit (4) or the dust collecting unit (3) is operated only when the detected concentration exceeds a predetermined concentration. It is preferable to provide an operation control unit for controlling start / stop. Further, even during operation, it is preferable to control the strength of the SPM removal capability according to the concentration of SPM in the atmosphere.

For example, as shown in FIG. 2, the sensor (20) is provided on the rail part (11) of the guardrail (8) and is provided in the operation control part of the suction part (4) or the dust collecting part (3). S in the atmosphere
A signal regarding the concentration of PM may be transmitted.

FIG. 4 is a block diagram for controlling the operation based on the concentration of SPM in the atmosphere detected by the sensor (21). SPM concentration S detected by the sensor (21)
Is transmitted to the SPM concentration determination unit (22).

On the other hand, the concentration determining unit (22) has a reference of the SPM when starting and stopping the operation of the suction unit (24) and the dust collecting unit (25) from the reference concentration input unit (23) in advance. The density L is input.

In the density determination unit (22) of the SPM, S
It is determined whether or not ≧ L. S ≧ L (YE
If S), proceed to the step of the driving level calculation section (26),
Here, the operating level according to the concentration of SPM is calculated.

Next, the process proceeds to the step of the driving level signal transmitting section (27), and the driving level signal is transmitted to the operating section (28). Next, an operation signal is transmitted from the operation section (28) to the suction section (24) and / or the dust collection section (25), and operation at a required operation level is performed.

On the other hand, in the SPM density determination section (22),
When S <L (NO), the operation stop signal transmitter (29)
The signal for stopping the operation is transmitted to the operation unit (28) from here, and the suction unit (2
4), the operation of the dust collecting part (25) is stopped.

Operation control is performed by the SPM concentration determination unit (22), the operation level calculation unit (26), the operation level signal transmission unit (27), the operation stop signal transmission unit (29) and the operation unit (28) in FIG. The department is composed.

As another embodiment, the suction unit
It is also a recommended embodiment that the start / stop of the operation of (4) or the dust collecting part (3) or the control of the operating state during the operation is performed according to a predetermined program.

In particular, the program includes the sensor (20)
It is advisable to provide a program creation unit that creates automatically based on the past data on the change over time in the concentration of SPM in the atmosphere obtained by.

FIG. 5 is a block diagram of such an embodiment. Sensor that detects the concentration of SPM in the atmosphere
The data about the concentration of SPM sent from (30)
It is stored in the data storage unit (31). The stored data is
It is sent to the data analysis unit (32), and in this step,
The data is organized and then transmitted to the program creating unit (33).

On the other hand, the data about the amount of electric energy currently stored in the storage battery (13) is transmitted from the stored amount data transmitting unit (34) to the program creating unit (33), and at the predetermined time from the present time. Data is also transmitted about the amount of electrical energy expected to charge the storage battery (13) in time.

That is, the weather forecast data is transferred from the weather forecast data input section (35) to the electric energy amount prediction calculation section (36).
In this step, the amount of electrical energy expected to be charged from the solar cell (12) to the storage battery (13) within a predetermined time from the present time is calculated, and the result is the program creation unit (33). Sent to. In the program creation section (33), past data about the change in the concentration of SPM in the atmosphere with respect to time transmitted from the data analysis section (32), and the current time sent from the stored amount data transmission section (34) From the amount of electric energy stored in, and the amount of electric energy transmitted from the electric energy amount prediction calculation unit (36) expected to be charged within a predetermined time from the present time, the electricity stored at the present time is calculated. An operation program is automatically created so that it can be operated for a predetermined time within the total electric energy amount of both the energy amount and the electric energy amount that is expected to be charged within a predetermined time from the present time. To be done.

For example, when the amount of electric energy required to operate at a desired level is insufficient for a predetermined time, the operation level during operation is lowered, or the operation is stopped for a long time. The operation program is automatically created by the method input in advance. If necessary, a general battery may be used as an auxiliary power source to supplement the shortage of electric energy due to the solar cell.

As a method of automatically creating a program on the basis of past data on changes in the concentration of SPM in the atmosphere over time, for example, the following method can be given.

The data storage unit (31) stores the data of the concentration of SPM in the atmosphere sent from the sensor (30) every moment. A predetermined number of days stored in the data storage unit (31), for example, data for the past one month is analyzed, and for 24 hours a day, the atmosphere for one month for each hour from 0:00 to 24:00. Calculate the average value of the concentration of SPM in. The SPM concentration of the average value is set as the SPM concentration in the time zone, and the SPM concentration model that changes for each time zone in 24 hours a day is used. A program is created based on this concentration model so as to change the operation level. In this case, when the required electric energy is insufficient, the program is created by lowering the operation level to a level at which the obtained electric energy amount can be operated.

For example, the unit reduction range of the operation level during operation is determined in advance, the unit reduction range is decreased, and the amount of electric energy required to operate for a predetermined time is calculated.
This is the amount of electric energy currently obtained from the storage battery (13), or the solar cell (1
Compare the value obtained by adding the amount of electrical energy expected to be obtained in 2), adjust the operation level by lowering it until operation is possible for a predetermined time, and create a final operation program.

For example, if the solar battery (12) cannot be expected to be charged to the storage battery (13) within a predetermined time due to bad weather, the amount of electric energy currently stored is used for a predetermined time. During that time, an operation program is created so that it can be operated.

The contents of the created operation program are transmitted from the program preparation section (33) to the operation signal transmission section (34). The driving signal transmitting section (34) transmits a driving signal to the operating section (38) in accordance with the driving program. Operation signals are transmitted from the operation unit (38) to the suction unit (39) and the dust collecting unit (40), and operation is performed according to the operation program.

The program creation section (33), data storage section (31), data analysis section (32), operation signal transmission section (37) in FIG.
The operation control section is constituted by the operation section (38).

The SPM collected by the dust collector (3) is
It is adapted to fall into a recovery tank (41) connected below the dust collecting section (3) for recovery. The dust collecting part (3), the suction part (39) and the recovery tank (41) are housed in a box (19) made of concrete or the like which is buried in the ground.

In the box (19) made of concrete or the like,
An opening (42) leading to the ground is provided, and the recovery tank (4
The SPM accumulated in 1) can be taken out to the outside by appropriately utilizing the opening (42).

[0049]

According to the present invention, the following effects can be obtained. (1) According to the first aspect of the invention, the SPM removal system may be installed at an intersection where SPM is frequently generated, and it is not necessary to install it on each diesel vehicle, which is advantageous in terms of cost. In addition, most of the parts other than the suction port can be stored in a box made of concrete or the like that is buried in the ground, which does not hinder the passage on the ground. Furthermore, when installing a device such as a dust collector that is comparatively larger than the device that is installed on each diesel vehicle, exposed to each diesel vehicle as in the past, and in a state where it is subjected to vibration while the diesel vehicle is running. Unlike, it is installed in a box, such as a concrete box buried in the ground, in a state where it is not subject to vibration, so it has good durability.

(2) According to the second aspect of the present invention, by providing the suction port integrally with the guardrail, it is more cost effective than the case where the suction port is separately provided, and at the same time, in the street. It does not spoil the landscape.

(3) According to the third aspect of the invention, the suction port integrated with the guardrail can be easily formed.

(4) According to the fourth aspect of the invention, not only energy saving but also labor saving can be achieved.

(5) According to the invention described in claim 5, the electric energy obtained by the solar cell can be effectively used.

(6) According to the invention described in claim 6, the removal system of the present invention can be efficiently operated in accordance with the concentration of SPM in the atmosphere.

(7) According to the invention described in claim 7, according to a predetermined program, for example, the operating level is increased during the daytime when the concentration of SPM is high, and the operating level is lowered during the night when the concentration of SPM is low. By doing so, the removal system can be operated efficiently.

(8) According to the invention described in claim 8, a program corresponding to the actual situation of the past change in the concentration of SPM in the atmosphere depending on the time zone is automatically obtained, and the removal system is based on the program. Can be operated efficiently.

(9) According to the invention of claim 9, the removal system can be systematically operated according to the amount of electric energy stored in the power storage unit.

(10) According to the tenth aspect of the present invention, the removal system is operated at a level as high as possible in consideration of the amount of electric energy expected to be obtained by the solar cell within the predetermined time after the present time. Is possible.

(11) According to the eleventh aspect of the present invention, since the SPM collected in the dust collecting portion is collected by the collection tank, the SPM is not accumulated in the dust collecting portion and the dust collecting portion can be efficiently collected. Can be activated.

(12) According to the twelfth aspect of the present invention, the durability of the dust collecting portion, the suction portion, the recovery tank and the like can be improved, and the work of taking out the SPM from the recovery tank to the ground is easily performed. be able to.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an SPM removal system of the present invention.

FIG. 2 is a perspective view of a guardrail in which the suction port and the discharge port in FIG. 1 are integrally provided.

FIG. 3 is a perspective view of another embodiment in which a suction port is integrated with a guard rail.

FIG. 4 is a block diagram in the case of controlling operation based on the concentration of SPM in the atmosphere detected by a sensor.

FIG. 5 is a block diagram in the case of controlling operation by a program created based on past data regarding changes in the concentration of SPM in the atmosphere over time.

[Explanation of symbols]

(1) Removal system (2a) Suction port (2b) Discharge port (3) Dust collector (4) Suction section (5) Power supply (6) Diesel vehicle (7) Signal (8) Guardrail (9) Leg (10) Pipe (11) Rail section (12) Solar cell (13) Storage battery (14a) Suction port (14b) Discharge port (15) Pipe (16) Guardrail (17) Leg (18) Rail section (19) Box (20) (21) Sensor (22) SPM density determination unit (23) Reference concentration input section (24) Suction section (25) Dust collector (26) Driving level calculator (27) Driving level signal transmitter (28) Operation part (29) Operation stop signal transmitter (30) Sensor (31) Data storage section (32) Data analysis section (33) Program creation department (34) Storage amount data transmission unit (35) Weather forecast data input section (36) Electric energy amount prediction calculation unit (37) Operation signal transmitter (38) Operation part (39) Suction section (40) Dust collector (41) Recovery tank (42) Open

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Sakae Okubo             1 Denki Electric Co., Ltd. 4484 Kutsukake, Sarushima Town, Sarushima District, Ibaraki Prefecture             Within Kou Co., Ltd. (72) Inventor Akihiro Watanabe             1 Denki Electric Co., Ltd. 4484 Kutsukake, Sarushima Town, Sarushima District, Ibaraki Prefecture             Within Kou Co., Ltd. F-term (reference) 2D101 CA06 CB00 EA02 FA11 FA22                       GA00 GA30 GA32 HB06                 4D054 AA20 CA12 CA20 EA08 EA09                       EA11

Claims (12)

[Claims] 1. A suction port which is exposed on the ground, a dust collecting unit which is connected to the suction port and is buried in the ground, and a suction unit which sucks air from the suction port to the dust collecting unit. A system for removing suspended particulate matter in the atmosphere, comprising: a power supply for operating the suction unit. 2. The system for removing suspended particulate matter in the atmosphere according to claim 1, wherein the suction port is provided integrally with a guard rail. 3. A suction port is formed by opening the vicinity of one end of the pipe integrated with the leg portion of the guardrail at the rail portion or leg portion of the guardrail, and the other end is also connected to the dust collecting portion. The airborne particulate matter removal system according to claim 2, characterized in that. 4. The removal system for suspended particulate matter in the atmosphere according to claim 1, wherein the power source is a solar cell. 5. The system for removing suspended particulate matter in the atmosphere according to claim 4, further comprising a power storage unit that stores the electric energy obtained by the solar cell. 6. An operation in which a sensor for detecting the concentration of airborne particulate matter in the atmosphere is provided, and the operation of starting or stopping the operation of the suction unit or the dust collecting unit or controlling the operating state during the operation is controlled according to the detected concentration. The control system is provided, The removal system of the airborne particulate matter in any one of Claims 1-5 characterized by the above-mentioned. 7. Start-up of operation of the suction unit or the dust collecting unit
An operation control unit for controlling the operation state during stop or operation according to a predetermined program is provided, and the suspended particulate matter in the atmosphere according to any one of claims 1 to 5, Removal system. 8. A program creating section is provided, which automatically creates the program based on past data on changes in the concentration of airborne particulate matter in the atmosphere with time obtained by the sensor. The removal system of airborne particulate matter according to claim 7, which is characterized in that. 9. A power storage unit for storing the electric energy obtained by the solar cell, wherein the program is operable for a predetermined time within the amount of electric energy stored in the power storage unit. 9. A system for removing airborne particulate matter according to claim 7 or 8, further comprising a program creating section for creating automatically. 10. A power storage unit that stores the electric energy obtained by the solar cell, and an electric energy that calculates the amount of electric energy expected to be obtained by the solar cell within a predetermined time based on weather forecast data. An amount of electric energy stored in the electric storage unit and a predicted amount of electric energy calculated by the electric energy amount prediction calculation unit, within a total amount of electric energy for a predetermined time. 9. The system for removing suspended particulate matter in the atmosphere according to claim 7, further comprising a program creation unit that automatically creates a program so that the program can be operated during the period. 11. The floating in the atmosphere according to claim 1, wherein a recovery tank for recovering the suspended particulate matter collected by the dust collecting unit is connected to the dust collecting unit. Particulate matter removal system. 12. At least one of the dust collecting section, the suction section, and the recovery tank is housed in a box that has an opening communicating with the ground and is buried in the ground. A system for removing airborne particulate matter according to any one of 1.