WO2021154014A1

WO2021154014A1 - Air quality improvement device for railway vehicle

Info

Publication number: WO2021154014A1
Application number: PCT/KR2021/001181
Authority: WO
Inventors: 김명숙; 임창원; 그린우드리차드
Original assignee: 김명숙
Priority date: 2020-01-29
Filing date: 2021-01-29
Publication date: 2021-08-05
Also published as: KR20210096759A; KR102303404B1

Abstract

The present invention relates to an air quality improvement device for a railway vehicle and, more particularly, to an air quality improvement device for a railway vehicle, wherein the device purifies air in a railway vehicle and then discharges the purified air. To this end, the railway vehicle air quality improvement device of the present invention comprises: a suction port through which external air is introduced; a cartridge filter which is mounted inside the suction port and filters the introduced air; a sterilization module which is mounted in an empty space inside the cartridge filter and sterilizes the filtered air; a body fastened to the suction port; an in-line fan which is mounted inside the body and receives the sterilized air to blow the air to the outside; and a laminar flow wind guide for discharging the air blown by the in-line fan to the outside.

Description

Air quality improvement system for railway vehicles

The present invention relates to an air quality improving device for a railroad car, and more particularly, to an air quality improving device for a railroad car for purifying and discharging air inside the railroad car.

Modern people live more than 90% of the time indoors and breathe a large amount of air together with people around them. In particular, railroad cars, a modern means of public transportation, are crowded during commuting hours, and the air quality is also very poor.

The air quality of passenger rail vehicles was included in the indoor air quality management law for multi-use facilities in 2013, and will be implemented from April 2020.

Therefore, the air quality improvement device of the existing railroad car does not take into account the special structure of the railroad car, that is, the long tunnel-type structure and the use environment, that is, the obstruction of the air flow due to the large number of passengers during commuting time. That is, the inlet and outlet are located in a short distance, so air circulation is insufficient due to eddy (i.e., doublet flow), and the wind outlet is in the direction of the door rather than the long passage, so passenger complaints due to noise and wind is exposed to

In addition, the cross-sectional area of the fine dust collecting filter is small, and the blower with low static pressure is rotated at high speed to generate excessive noise and has a large amount of electricity consumption.

The problem to be solved by the present invention is to propose an air quality improvement apparatus for a railway vehicle in which air circulation is smooth.

Another problem to be solved by the present invention is to propose a railway vehicle air quality improvement device capable of efficiently collecting fine dust.

Another problem to be solved by the present invention is to propose an air quality improvement apparatus for a railway vehicle that generates less noise and consumes less electricity.

Another problem to be solved by the present invention is to propose an air quality improvement apparatus for a railway vehicle that is easy to maintain.

Another problem to be solved by the present invention is to propose an air quality improvement apparatus for a railway vehicle capable of measuring air quality and providing the measured air quality data to the outside.

To this end, the air quality improvement apparatus for a railway vehicle of the present invention includes an inlet through which external air is introduced; a cartridge filter mounted inside the inlet and filtering the introduced air; a sterilization module mounted in the empty space inside the cartridge filter and sterilizing the filtered air; a body coupled to the suction port; an in-line fan mounted inside the body, receiving sterilized air and blowing it to the outside; and a laminar flow wind guide for discharging the air blown by the inline fan to the outside.

The air quality improvement apparatus for a railway vehicle according to the present invention has a Coanda effect that flows through the ceiling surface by increasing the pressure of the air discharged to the outside by forming a relatively small cross-sectional area of the laminar flow wind guide for discharging air to the outside compared to other parts. This has the effect of improving the air quality of railway vehicles.

In addition, the railway vehicle air quality improvement device proposed in the present invention can efficiently collect fine dust by using a cylindrical HEPA filter, and uses an electronically commutated motor with excellent energy efficiency to reduce electricity consumption and noise. there is.

In addition, the present invention has the advantage that the cartridge filter and sterilization module for purifying air can be easily replaced/managed by an administrator. It has the effect of being able to grasp the status in real time.

1 shows a schematic installation state of an air quality improvement apparatus for a railway vehicle according to an embodiment of the present invention.

2 is an exploded perspective view of an air quality improvement apparatus for a railroad vehicle according to an embodiment of the present invention.

3 shows a cartridge filter on which a sterilization module is mounted according to an embodiment of the present invention.

4 shows a sterilization module according to an embodiment of the present invention.

5 is an exploded perspective view of a sterilization module according to an embodiment of the present invention.

The foregoing and further aspects of the present invention will become more apparent through preferred embodiments described with reference to the accompanying drawings. Hereinafter, it will be described in detail so that those skilled in the art can easily understand and reproduce through these embodiments of the present invention.

1 shows a schematic installation state of an air quality improvement apparatus for a railway vehicle according to an embodiment of the present invention. Hereinafter, an apparatus for improving air quality of a railway vehicle according to an embodiment of the present invention will be described with reference to FIG. 1 .

Referring to FIG. 1, the air quality improving device of the railroad car is installed on the ceiling of the railroad car, and is formed to be elongated in the longitudinal direction of the railroad car. In detail, the discharge port of the air purifier for railroad vehicles is formed long in the longitudinal direction of the railroad car to form a laminar air flow in which air flows along the ceiling. At this time, the laminar air circulation is diffused on one side by the Coanda Effect flowing along the ceiling surface, so the attenuation of the air flow is small and the reach distance is long. In addition, since air is rapidly sprayed from the outlet, it can be transported/circulated together with the surrounding air by the Bernoulli effect, thereby effectively improving the air quality of railway vehicles.

In addition, the air purification apparatus for a railway vehicle proposed in the present invention forms an inlet and an outlet opposite to each other, and the outlet is narrow to speed up the air discharging (spraying) speed.

2 is an exploded perspective view of an air quality improvement apparatus for a railway vehicle according to an embodiment of the present invention. Hereinafter, an exploded perspective view of an air quality improving apparatus for a railway vehicle according to an embodiment of the present invention will be described in detail with reference to FIG. 2 .

According to FIG. 2, the air quality improvement device 200 for a railroad vehicle includes a laminar flow wind guide, a rotating grill, a body case, a body cover, an in-line fan, an air quality sensor box, an inlet case, an inlet cover, a cartridge filter, a sterilization module, and a lower inlet case. include Of course, other configurations other than the above-described configuration may be included in the air quality improvement apparatus for a railway vehicle proposed in the present invention. The main body includes a main body cover and a main body case, and the inlet includes an inlet case, an inlet cover, and a lower inlet case.

The laminar flow wind guide 202 is a discharge port through which purified air is discharged to the outside, and as described above, the cross-sectional area of the discharged portion is relatively small compared to other portions so that it is discharged to the outside in a state where the pressure of the discharged wind is high. . To explain in detail, the cross-sectional area of the laminar wind guide 202 is gradually reduced to create a laminar flow and a Coanda effect for the wind blown from the inline fan 210, and is formed to be long and thin in the longitudinal direction of the railroad car, and the cross-sectional area is has a rectangular shape. In addition, the laminar flow wind guide 202 proposed in the present invention is formed to be relatively adjacent to the ceiling of the railway vehicle to have a high Coanda effect.

The rotary grill 204 is formed between the laminar flow wind guide 202 and the body case 206 , and changes the direction of the wind blown by the in-line fan 210 built in the body case 206 to the left or right. To this end, the rotary grill 204 has a structure rotatable left or right between the laminar flow wind guide 202 and the body case 206 .

The main body case 206 has a polygonal column shape, and each component constituting the air purifier for a railway vehicle is built therein. In more detail, the in-line fan 210 and the air quality sensor box 212 are built in the main body case 206 .

One side of the main body case 206 is coupled to the rotary grill 204 and the laminar flow wind guide 202, and the other side is coupled to the suction inlet case 214. The main body case 206 is fastened to the main body cover 208 with the in-line fan 210 and the air quality sensor box 212 built therein.

The main body cover 208 is fastened to the main body case 206, and if necessary, it is fixedly fastened to the railway vehicle and the ceiling or wall.

The inline fan 210 is mounted inside the body case 206 and the body cover 208 , and blows purified air in the direction of the laminar wind guide 202 . As the inline fan 210, it is preferable to use an electronically commutated motor having excellent energy efficiency as described above.

The air quality sensor box 212 may be equipped with a fine dust sensor, a carbon dioxide sensor, a temperature sensor or a humidity sensor, and one side of the air quality sensor box 212 is formed with a through hole through which external air can freely move, and the measured The air quality data is transmitted to the control unit of the railway vehicle air purification system or the control room or control room of the railway vehicle. To this end, the air purifier for railroad vehicles is equipped with a communication module that can transmit air quality data, and a power supply unit and a signal conversion module for supplying power to each module are mounted.

In relation to the present invention, the air quality sensor box 212 is built in the space formed by the body case 206 and the body cover 208 , and in particular, may be fixedly coupled to the outer case of the in-line fan 210 . In relation to the present invention, purified air is introduced into the inline fan 210, whereas unpurified air is introduced into the air quality sensor box 212 to measure the air quality inside the railway vehicle.

The inlet case 214 is fastened to the other side of the main body case 206 , and a hole is formed in the center of the inlet case 214 fastened to the main body case 206 so that purified air is supplied to the in-line fan 210 . In relation to the present invention, the outer diameter of the hole formed in the center of the inlet case 214 is formed to be relatively smaller than the inner diameter of the portion into which the sterilization module 220 formed in the center of the cartridge filter 218 is introduced. As such, the air supplied to the in-line fan 210 is formed so that the outer diameter of the hole formed in the center of the inlet case 214 is relatively smaller than the inner diameter of the portion into which the sterilization module 220 formed in the center of the cartridge filter 218 is introduced. Air filtered by the cartridge filter 218 is supplied. That is, when the outer diameter of the hole formed in the center of the inlet case 214 is relatively larger than the inner diameter of the portion into which the sterilization module 220 formed in the center of the cartridge filter 218 is introduced, by the cartridge filter 218 Unfiltered air is supplied to the inline fan 210 .

The inlet case 214 is fastened to the inlet cover 216 in a state in which it is fastened to the main body case 206 . Of course, the cartridge filter 218 and the sterilization module 220 are mounted inside the fastened inlet case 214 and the inlet cover 216 .

The other end portions of the inlet case 214 and the inlet cover 216 that are not fastened to the main body case 206 have an open structure in which an inlet is formed so that external air can be introduced, rather than a closed structure.

The cartridge filter 218 filters the air introduced through the inlet case 214 , the inlet cover 216 and the lower inlet case 222 . The cartridge filter 218 is formed in a cylindrical type, and as described above, a HEPA filter is applied, and as described above, the air contact surface is increased to improve the collection amount of fine dust and the air volume.

The cartridge filter 218 is replaced after opening and closing any one of the inlet case 214 , the inlet cover 216 , or the lower inlet case 222 .

The sterilization module 220 is mounted inside the cartridge filter 218 having a cylindrical shape.

3 shows a cartridge filter on which a sterilization module is mounted. As shown in FIG. 3, the sterilization module is mounted in the center of the cartridge filter having a circular shape.

4 shows a sterilization module according to an embodiment of the present invention, and FIG. 5 is an exploded perspective view of the sterilization module according to an embodiment of the present invention.

The sterilization module 220 has a cylindrical shape to be mounted inside the cylindrical cartridge filter 218, and includes an ultraviolet lamp and a nanotube filter. In detail, the nanotube filter is disposed on the outside in a state where the UV lamp is located in the center. The nanotube filter has a honeycomb structure and is coated with a photocatalyst. The nanotube filter can increase the photocatalytic efficiency by coating a material with high reflective efficiency, such as aluminum and chromium.

Hereinafter, the structure of the sterilization module 220 will be described in detail.

The sterilization module 220 includes a first cover, a second cover, a nanotube filter, and an ultraviolet lamp.

The first cover 220a and the second cover 220b have the same shape, and the nanotube filter 220c and the ultraviolet lamp 220d are mounted therein. The first cover 220a is divided into a first space having a first diameter and a second space having a relatively larger diameter than the first diameter, and a portion of the ultraviolet lamp 22d is mounted in the first space, and the second space The nanotube filter 220c is mounted in the space. Of course, the first space and the second space are not sealed, but have an open structure so that the light of the ultraviolet lamp 220d can be irradiated to the nanotube filter 220c.

The second cover 220b coupled to the first cover 220a is also divided into a third space having a first diameter and a fourth space having a relatively larger diameter than the first diameter, and the ultraviolet lamp 220d in the third space ) is mounted, and the nanotube filter 220c is mounted in the fourth space. Of course, the first space and the second space are not sealed, but have an open structure so that the light of the ultraviolet lamp 220d can be irradiated to the nanotube filter 220c. Of course, the first cover 220a and the second cover 220b are fastened using a fastening member, and the nanotube filter 220c and the ultraviolet lamp 220d are inside the first cover 220a and the second cover 220b. is fastened in the mounted state.

As shown in FIG. 5 , not one nanotube filter is mounted, but a plurality of nanotube filters are mounted, whereas only one UV lamp is mounted. In addition, the fastened first cover and the second cover have a cylindrical shape, and are introduced into the cartridge filter.

Both terminal edges of the first cover 220a and the second cover 220b have a closed structure so that the nanotube filter 220c mounted on the first cover 220a and the second cover 220b is not separated to the outside. , the nanotube filter 220c is not separated to the outside by the clogged structure. Of course, as described above, the second space and the fourth space also have an open structure except for both terminal edges.

The nanotube filter 220c has a cylindrical shape, and both ends have protrusions having a relatively large diameter compared to other parts. As described above, the protrusion does not escape to the outside while in close contact with the closed structure of both end edges of the first cover 220a and the second cover 220b.

The ultraviolet lamp 220d also has a cylindrical shape, and both ends are formed with rubber rings having a relatively large diameter compared to other parts. The rubber ring formed in the UV lamp 220d is accommodated in the receiving portions formed at both ends of the first cover 220a and the second cover 220b so that the UV lamp is also not separated to the outside. That is, the first cover 220a and the second cover 220b form an accommodating portion capable of accommodating the rubber ring, and in FIG. 5 , two fixed rings 220e spaced apart from each other at a predetermined interval in which the rubber ring is accommodated are formed. And, the receiving portion is accommodated between the two rings (220e).

The lower inlet case 222 is formed with an inlet so that external air can be introduced, and in particular, a separate sterilization module cover may be located in the center of the lower inlet case 222 . The sterilization module cover is fastened to the lower intake case 22, and has a streamlined or hemispherical shape to reduce losses due to vortex of intake air. Of course, the lower intake case and the sterilization module cover may be configured as one.

In addition, a control board (PCB board) capable of controlling the air purification device for a railway vehicle is formed in the air purification device for a railway vehicle proposed by the present invention, and a display (or billboard) for displaying necessary information such as the current state is formed if necessary. do.

The laminar flow wind guide proposed in the present invention may be formed to have a discharge port that is relatively longer than the length of the body, and the connection between the body and the suction port is fastened with a hinge or a hinge to prevent falling when separated, and a limit switch is placed at the fastening portion to cover the When disconnected, the power is automatically cut off.

As described above, the present invention makes the outlet of the laminar wind guide parallel to the ceiling in the longitudinal direction of the railway vehicle to create laminar air circulation flowing through the ceiling. To this end, the present invention uses an in-line fan with a large torque in which the intake and discharge ports of the air circulation device of the railway vehicle are formed opposite to each other, and the suction and discharge of the blower occur in a straight line to blow wind in the same direction. It is preferable to do At this time, the cross-sectional area of the outlet of the inline fan is gradually reduced to increase the wind speed of the outlet. In addition, it is preferable to use an electronically commutated fan with good energy efficiency as the inline fan.

The wind from the outlet of the in-line fan passes through a long, gradually decreasing laminar flow windguide, creating a directional laminar flow with higher wind speed. At this time, the discharge cross-sectional area of the laminar wind guide is formed smaller than the cross-sectional area of the discharge port of the inline fan.

At this time, if a rotating grill that can move the wind left and right is installed in front of the outlet, the laminar flow can be moved left and right to widen the laminar flow.

The polluted air is introduced through the intake ports located below and below the air quality improvement device for railway vehicles. In particular, the sterilization module cover is formed in the center of the lower intake case formed at the bottom, and the sterilization module cover has a streamlined or hemispherical shape to reduce loss due to a vortex of the intake air.

The polluted air introduced into the inlet passes through the HEPA filter to remove contaminants such as fine dust. In this case, it is preferable to use a cylindrical type cartridge filter in order to increase the air contact surface of the HEPA filter to increase the collection amount of fine dust and the air volume. In addition, maintenance, such as replacement of the cartridge filter, is performed through opening and closing of the inlet case and the inlet cover.

A sterilization module is embedded inside the cylindrical cartridge filter to collect contaminants, and the sterilization module opens and inserts the lower intake case of the cartridge filter. The sterilization module can remove and purify bacteria, mold and NCD (Non-Communicable Diseases) causative substances collected by the cartridge filter. At this time, the sterilization module has a UV lamp and a honeycomb structure with a number of nanotubes coated with a photocatalyst, and the surface of the nanotubes is coated with a material with high reflective efficiency, such as aluminum and chromium, to increase the photocatalytic efficiency.

The air quality sensor box has a sensor box capable of mounting a fine dust sensor, a carbon dioxide sensor, a temperature and humidity sensor, and the like, and it is preferable that one side of the sensor box has a through hole through which external air can freely pass.

The air quality improvement device for railroad vehicles is designed in a square rectangular parallelepiped assembly form so that the laminar flow wind guide, body case, body cover, inlet case, and inlet cover can be assembled by changing the direction according to the installation and maintenance conditions. It is preferable that a billboard bracket 226 to which an LCD panel for advertisement (advertisement board: 224), etc. can be mounted is formed on the side of the air quality improving device for railroad vehicles, and a separate socket through which power for advertisement can be pulled out is preferably formed in the power socket.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. .

Claims

an inlet through which external air is introduced;

a cartridge filter mounted inside the inlet and filtering the introduced air;

a sterilization module mounted in the empty space inside the cartridge filter and sterilizing the filtered air;

a body coupled to the suction port;

an in-line fan mounted inside the body, receiving sterilized air and blowing it to the outside; and

and a laminar flow wind guide for discharging the air blown by the inline fan to the outside.
The method of claim 1, wherein the inlet is

an inlet case coupled to the other side of the body;

an inlet cover coupled to the inlet case; and

and a lower inlet case fastened to the lower surface of the inlet case and the inlet cover,

The other side of the suction port case and the other side of the suction port cover that are not fastened to the other side of the main body are provided with a suction port through which external air is introduced.
According to claim 2, wherein the suction port case is fastened to the body is formed with a hole,

The outer diameter of the hole is relatively smaller than the inner diameter of the cartridge filter,

The cartridge filter is a railway vehicle air quality improvement device, characterized in that it includes a HEPA filter.
The method of claim 3, wherein the sterilization module

a first cover;

a second cover coupled to the first cover;

a nanotube filter mounted between the fastened first cover and the second cover; and

Air quality improvement device for railroad vehicles, characterized in that it includes an ultraviolet lamp mounted on the inside of the nanotube filter.
5. The method of claim 4,

The first cover includes a first area in which the ultraviolet lamp is mounted and a second area in which the nanotube filter is mounted,

It has a structure in which both end edges are blocked so that the mounted nanotube filter does not escape to the outside,

Air quality improvement apparatus for railroad vehicles, characterized in that it includes a receiving portion having a shape of two semi-rings spaced apart from each other by a predetermined distance for accommodating rubber rings formed at both ends of the UV lamp so that the mounted UV lamp does not escape to the outside.
6. The method of claim 5,

It includes a sterilization lamp cover fastened to the lower intake case,

The sterilization lamp cover is a railway vehicle air quality improvement device, characterized in that it has a streamlined or hemispherical shape.
The air quality sensor box according to claim 1, wherein the air quality sensor box is mounted inside the body, a through hole through which external air is introduced is formed, and a sensor for sensing the state of the air introduced through the formed through hole is included. Air quality improvement system for railway vehicles.
[Claim 8] The air quality improvement apparatus for railroad vehicles according to claim 7, further comprising a rotating grill formed between the main body and the laminar flow wind guide to change the moving direction of the air blown from the in-line fan.
The method of claim 8, wherein the laminar wind guide,

The cross-sectional area of the part where air is discharged is relatively small compared to other parts,

The air quality improving device for railroad vehicles, characterized in that the portion from which the air is discharged has a rectangular shape, and is formed at an upper portion relatively close to the ceiling of the railroad vehicle based on the center of the height direction of the laminar flow wind guide.
10. The method of claim 9,

The laminar flow wind guide is an air quality improvement device for railroad vehicles, characterized in that it has a relatively longer outlet than the length of the main body.
According to claim 1, wherein a limit switch is formed between the main body and the suction port,

Air quality improvement device for railroad vehicles, characterized in that the limit switch is not pressurized to cut off the supplied power.
[2] The air quality improvement apparatus for a railroad vehicle according to claim 1, wherein a bracket on which an advertisement LCD panel can be mounted is formed on the side of the main body and the intake case, and a separate power socket is provided.