KR20220028358A - Air processing system capable of separately improving air quality within each of railway vehicle - Google Patents

Abstract

The present invention relates to a distributed control type air quality improvement apparatus for a railroad vehicle. The air quality improvement apparatus includes: a built-in case installed in the center of a ceiling of each vehicle; a control board provided in the case to perform a control operation in accordance with a signal of an engine room control panel; a dust detection sensor placed beside a suction part of the case to sense the amount of fine dust included in the air introduced into the case, to transmit the amount to the control board; a sirocco fan provided in the case such that the air in the vehicle is discharged into the vehicle through a discharge part after being introduced through the suction part of the case, and operated by a BLDC motor controlled in speed by the control board; a filter part comprising a prefilter collecting at least 85 wt% of dust, a HEPA filter filtering out at least 95% of particles having a size of 0.3 ㎛ and placed behind the prefilter, and a photocatalytic filter formed by coating ball-type honeycomb ceramics with a photocatalyst, and placed behind the HEPA filter; a UVC light source radiating short-wavelength ultraviolet rays having a wavelength of 100-280㎚ toward the prefilter to remove the viruses collected by the HEPA filter; and a UVA light source radiating long-wavelength ultraviolet rays having a wavelength of 320-400㎚ toward the photocatalytic filter to remove ultrafine dust through a photochemical action of the photocatalyst. The air quality improvement apparatus has a distributed control function in which one single control board is provided per passenger compartment to perform independent operation in accordance with the amount of dust in the vehicle, and a collective control function in which the control board in each vehicle is collectively controlled in accordance with manual control of an engineer through a railroad vehicle control panel.

Description

Air quality improvement system for railway vehicles {AIR PROCESSING SYSTEM CAPABLE OF SEPARATELY IMPROVING AIR QUALITY WITHIN EACH OF RAILWAY VEHICLE}

The present invention relates to an air quality improvement device for a railroad vehicle, and more particularly, operates independently so that the air quality in each railroad vehicle can be maintained constant, and according to the air pollution degree (for example, dust concentration) in the cabin, The present invention relates to an air quality improvement device for a railway vehicle of a distributed control method in which the rotation speed of a fan fluctuates but normally rotates at a constant speed to suppress noise generation.

In general, a large number of passengers are boarded in a passenger compartment of a railroad car, and due to this, the air in the passenger compartment is inevitably polluted by containing a large amount of fine dust and harmful substances including odor substances. In particular, as recent railroad vehicles have a closed structure to prevent damage to passengers due to a difference in air pressure inside and outside the vehicle, air pollution in the cabin vehicle increases over time.

For this reason, most railway vehicles are equipped with an air quality improvement device that purifies the air in the cabin to improve the air quality, and the air quality improvement device is operated under the control of the engineer who drives the railroad vehicle to prevent fine dust and Toxic substances are removed.

However, in the conventional air quality improvement device for railroad vehicles, air quality is controlled through batch control of one train consisting of a plurality of passenger cars, so considering the fact that the air pollution level is different for each passenger car according to the degree of congestion of passengers, it provides a comfortable environment for passengers. There is a problem in that it is insufficient to provide a guest room environment.

On the other hand, as a result of investigating the prior art related to the present invention, a number of patent documents were searched, and some of them are introduced as follows.

Patent Document 1 discloses a component type sensor assembly for detecting in-room temperature and humidity, fine dust, odor, carbon monoxide, and carbon dioxide in real time; an A/D converter for converting analog detection signals output from the component type sensor assembly into digital signals, respectively; a first control unit for integrating various types of information on the indoor air of the railway vehicle; a second communication interface for configuring the sensor board as a first communication interface for performing data communication between the first control unit and the main board, and for performing data communication between the sensor board and the second control unit; After comprehensively analyzing the temperature and humidity, fine dust, odor, carbon monoxide and carbon dioxide in each room through a predetermined program, the results are stored in the data storage unit and output to the monitor, and the contents are sent to the Ethernet or ventilation and air conditioning system at the same time. a second control unit that transmits; a USB port that transmits the analysis of air quality in the room via Ethernet; By configuring the main board as a third communication interface that transmits air quality analysis data to the ventilation and air conditioning system, the passenger’s right to know is satisfied, and the cabin air quality monitoring and A control system is disclosed.

Patent Document 2 includes a case; a pedestal formed on the lower surface of the case; In the air purifier for railroad vehicles provided on one side of the outer surface of the case and comprising a detection sensor for detecting air quality around the case, the front cover is coupled to the front of the case, the rear cover is coupled to the rear of the case, the rear cover In the front of the case, the fan is coupled to the rear cover so as to be spaced apart from the rear cover by a predetermined distance, and three filters are provided on the inside of the case, among the rear of the front cover, and these three filters are, from the front Based on the rear, it is provided in the order of pre-filter - deodorizing filter - HEPA filter, and among the inner wall surfaces of the case, a wall is formed on the inner wall surface in the direction of one end of the front side to which the front cover is coupled, and the wall opens the upper side. The door is configured in the form of a door coupled through a hinge to the open area, and the door has a structure in which the hinge is rotated from the wall to the axis and pushed in one direction and then returned. By coupling the torsion spring to the hinge, the door elastic action In addition to making this possible, an air purifier for railway vehicles is disclosed in which the operating speed of the fan is automatically set based on the air quality and the filter replacement can be notified based on the LED.

Patent Document 3 discloses a duct through which air moves in order to remove harmful microorganisms such as viruses and bacteria from the air, a filter installed in the conduit to collect harmful microorganisms in the air, and ultrasonic waves toward the filter. Harmful microorganisms using ultrasonic waves that can effectively remove harmful microorganisms such as viruses and bacteria in the air moving in the ducts of air conditioning facilities installed in public or industrial buildings or residential buildings, etc. in a non-contact manner using ultrasonic waves A removal apparatus and method are disclosed.

Patent Document 1: KR10-0620060 B1 Patent Document 2: KR10-2076852 B1 Patent Document 3: KR10-1762739 B1

The present invention was devised to solve the problems of the prior art. Considering the indoor environment of a plurality of vehicles inevitably showing irregular fine dust distribution, the air quality improvement device of each vehicle is distributed and controlled to create a constant indoor environment for each vehicle, An object of the present invention is to provide an air quality improvement device for railway vehicles of a distributed control method that can create a comfortable indoor environment by checking the usage time of the filter provided in the air quality improvement device and replacing the filter within a predetermined time.

Specifically, it operates independently to keep the concentration of fine dust in all vehicles constant according to the batch control of the railway operator, and the motor speed of the fan is varied according to the concentration of dust, but dispersion that can minimize noise by rotating at a constant speed normally An object of the present invention is to provide an air quality improvement device for a controlled railway vehicle.

The present invention for achieving the above object, the built-in type case installed in the center of the ceiling of each vehicle constituting the railroad vehicle; a control board provided in the case to perform control according to a signal from the engine room control panel; a dust sensor disposed on the intake side of the case to detect the amount of fine dust contained in the air introduced into the case and transmit it to the control board; a sirocco fan provided in the case so that air in the vehicle is introduced into the intake part of the case and then discharged into the vehicle through the exhaust part and operated by a BLDC motor whose speed is controlled by a control board; A pre-filter that collects more than 85% of dust by weight method, a HEPA filter that can filter out more than 95% of 0.3㎛ particles and is disposed on the rear side of the pre-filter, and a ball-type honeycomb ceramic coated with a photocatalyst. a filter unit comprising a photocatalytic filter disposed on the rear side of the; UVC light source for removing viruses collected in the HEPA filter by irradiating short-wavelength ultraviolet rays with a wavelength of 100 to 280 nm toward the pre-filter; and a UVA light source that irradiates long-wavelength ultraviolet rays with a wavelength of 320 to 400 nm toward the photocatalytic filter to remove ultrafine dust by the photochemical action of the photocatalyst,

One control board is provided for each vehicle (cabin) of a railroad vehicle, and each vehicle is controlled by a distributed control function that operates independently according to the amount of dust in the vehicle, and the engineer's manual control of the railroad vehicle operation panel provided in the engine room It is characterized in that the board is provided with a batch control function that is collectively controlled.

In addition, according to the air quality improvement apparatus for a distributed control method of the present invention, the dust sensor and the UVC light source are fixed to the sensor fixing bracket installed on the intake side of the case, and the UVA light source is the light source installed in the case from the front of the sirocco fan. It is fixed to the fixing bracket, and the UVC light source and the UVA light source are characterized by irradiating light in a range of 120 degrees.

In addition, according to the air quality improvement apparatus for a distributed control method of the present invention, the control board includes a microprocessor, a signal processing unit that processes and transmits signals from the engine room control panel to the microprocessor, and a mode setting for setting the air conditioning mode and ID A unit and ID setting unit, an integrated time display unit that integrates and displays the operating time for maintenance of the filter unit, a replacement display unit that blinks the LED to guide replacement when the set maximum use time has elapsed, and an integrated time display unit It is characterized in that it comprises a storage unit consisting of an accumulator function button for operation and an EEP memory in which the operation time of the device is recorded.

The air quality improvement apparatus for a railway vehicle of a distributed control method according to the present invention is operated under the collective control of a railway vehicle engineer, but operates independently in each vehicle to maintain a constant fine dust concentration in all vehicles, as well as to control the dust concentration. As the motor speed of the fan changes accordingly, the dust removal time is shortened.

In addition, according to the air quality improvement apparatus for railway vehicles of the distributed control method of the present invention, the virus collected in the HEPA filter is irradiated with a UVC light source to eradicate it, and a photocatalyst activated by the UVA light source is applied to the ultrafine dust and virus that have passed through the HEPA filter. It has the effect of safely protecting passengers from fine dust and viruses.

In addition, according to the air quality improvement device for railway vehicles of the distributed control method of the present invention, the filter operation time is displayed and the replacement time of the filter is notified through the LED of the replacement display unit, so the filter is replaced within a predetermined time and replaced with a contaminated filter. It has the effect of not causing any problems.

1 is a side view showing an air quality improvement apparatus for a railway vehicle of a distributed control method according to an embodiment of the present invention.
2 is a plan view showing an air quality improvement apparatus for a railway vehicle of a distributed control method according to an embodiment of the present invention.
3 is a view showing a circuit configuration of a control board according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a description will be given of an air quality improvement apparatus for a railway vehicle of a distributed control method according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the air quality improvement apparatus for a distributed control system according to an embodiment of the present invention is a built-in case 50 installed in the center of the ceiling of each vehicle constituting the railway vehicle. ); a control board 10 provided in the case 50 to perform control according to a signal from the engine room control panel; a dust sensor 45 disposed on the suction part 51 side of the case 50 to detect the amount of fine dust contained in the air introduced into the case 50 and transmit it to the control board 10; BLDC motor ( 35) a sirocco fan 30 operated by; A pre-filter 21 that collects more than 85% of dust by weight method, a HEPA filter 22 that can filter out more than 95% of particles with a size of 0.3 μm and is disposed on the rear side of the pre-filter 21, and a ball-type honeycomb ceramic a filter unit 20 having a photocatalyst filter 23 disposed on the rear side of the HEPA filter 22 and coated with a photocatalyst; UVC light source 41 for irradiating short-wavelength ultraviolet rays with a wavelength of 100 to 280 nm toward the pre-filter 21 to remove viruses collected in the HEPA filter 22; and a UVA light source 42 for irradiating long-wavelength ultraviolet rays with a wavelength of 320 to 400 nm toward the photocatalytic filter 23 so that ultrafine dust is adsorbed by the photochemical action of the photocatalyst.

Here, as the UVC light source 41, it is preferable to use a light source capable of irradiating ultraviolet rays of 253.7 nm, which is known to have the best sterilization power, and as the UVA light source 412, a light source capable of irradiating ultraviolet rays of 365 nm is used. it is preferable

In addition, one control board 10 is provided for each cabin vehicle of the railroad car, and each vehicle according to the distributed control function that operates independently according to the amount of dust in the vehicle, and the engineer's manual control of the railroad vehicle operation panel provided in the engine room It is preferable to have a batch control function in which the control board 10 is collectively controlled. According to this configuration, since the control board 10 independently controls the air quality improving device provided in each vehicle, it is possible to maintain a constant concentration of fine dust in all vehicles.

In addition, the dust sensor 45 and the UVC light source 41 are fixed to the sensor fixing bracket 53 installed on the suction part 51 side of the case 50, and are independent on both sides of the sensor fixing bracket 53, respectively. It is preferable to be fixed to And the UVA light source 42 is fixed to the light source fixing bracket 54 installed in the case 50 from the front of the sirocco fan 30, it is preferable that 2-3 are installed in consideration of the width of the light source fixing bracket 54 Do. At this time, it is preferable that the UVC light source 41 and the UVA light source 42 are configured to irradiate light in a range of 120 degrees.

Accordingly, 85% or more of the dust by weight method collected in the pre-filter 21 and fine dust and viruses collected in the HEPA filter 22 are removed by ultraviolet rays irradiated from the UVC light source 41, and the HEPA filter 22 is removed. Ultrafine dust and viruses of less than 2.5 PM 2.5 (particle size of 2.5 μm or less) passing through are adsorbed and removed by the photocatalyst activated honeycomb ceramic by the ultraviolet rays irradiated from the UVA light source 42 to the photocatalytic filter 23 .

In addition, as shown in FIG. 3 , the control board 10 includes a microprocessor 11 , a signal processing unit 18 that processes signals from the engine room control panel and transmits them to the microprocessor 11 , an air conditioning mode and Mode setting unit 16 and ID setting unit 17 for setting ID, storage unit 15 made of EEP memory to record the operating time of the device, and operating time for maintenance of filter unit 20 Integration time display unit 13 for integrating and displaying, a replacement display unit 12 to guide replacement by blinking the LED when the set maximum use time has elapsed, and an integration function button for operating the integration time display unit 13 ( 14) is preferred.

And the control board 10 has a motor voltage control unit for controlling the BLDC motor 35, an input voltage control unit for converting AC power input from the outside into DC power, and a UV light source (41, 42) and a micro A first DC-DC converter that converts and supplies DC power suitable for each of the processor 11, and a second DC-DC converter that converts and supplies the input power into DC power suitable for the BLDC motor 35 may be further installed. there is. At this time, DC power is preferably supplied to the UV light sources 41 and 42 through a regulator, and the signal of the dust sensor 45 is preferably transmitted to the microprocessor 11 through a data buffer and a flat cable.

The air quality improvement apparatus for a railway vehicle of a distributed control method according to an embodiment of the present invention configured as described above enables an engineer to collectively control the air quality improvement apparatus provided in a plurality of vehicles in the engine room, as well as By independently controlling the BLDC motor by the provided control board, it is possible to uniformly maintain the air quality of a plurality of passenger cars constituting the railroad car.

Under the manual control of the engineer, when a signal from the engine room control panel is input to the control board 10 , the signal processing unit 18 processes this signal and transmits it to the microprocessor 11 , and the microprocessor 11 is the case An operation signal is sent to each of the dust sensor 45, the UVA light source 42 and the UVC light source 41, and the BLDC motor 35 provided inside the 50. Accordingly, the BLDC motor 35 is driven to operate the sirocco fan 30 , and according to the operation of the sirocco fan 30 , air in the cabin flows into the interior of the case 50 through the suction unit 51 . do.

The introduced air passes through the filter unit 20 including the pre-filter 21 , the HEPA filter 22 and the photocatalytic filter 23 , and then is discharged into the cabin through the discharge unit 52 . At this time, more than 85% of the dust contained in the introduced air by weight is collected by the pre-filter 21, and PM 10 fine dust and yellow dust, PM 2.5 ultra-fine dust and viruses are collected in the HEPA filter 22, Viruses collected by the filter 22 are eradicated by ultraviolet rays irradiated from the UVC light source 41 . In addition, ultrafine dust and viruses of less than PM 2.5 that have passed through the HEPA filter 22 are adsorbed onto the honeycomb ceramic coated with a photocatalyst activated by ultraviolet rays irradiated from the UVA light source 42 in the process of passing through the photocatalytic filter 23 . becomes and is removed Accordingly, the air discharged into the cabin through the discharge unit 52 does not contain harmful substances such as fine dust and viruses, so that a comfortable indoor environment can be created.

And the dust sensor 45 disposed near the suction part 51 of the case 50 detects the dust concentration of PM 10 and the dust concentration of PM 2.5 of the air introduced into the case 50 to detect the dust concentration of the microprocessor 11 . is transmitted through RS232C communication, etc., and the microprocessor 11 controls the speed of the BLDC motor 35 through the motor voltage control unit according to the dust concentration. That is, when the dust concentration is high, the rotation speed of the BLDC motor 35 is increased so that the dust can be removed quickly, and in normal times, the BLDC motor 35 is controlled at a constant speed to minimize noise to create a comfortable environment. do.

Then, the microprocessor 11 accumulates the operating time of the device and records it in the storage unit 15 made of EEP memory. The filter of the unit 20 can be replaced. In addition, during periodic inspection, the integrated use time of the filter is displayed on the integration time display unit 13 through the integration function button 14 so that the usage time can be checked.

In other words, the air quality improvement device for railway vehicles of the distributed control method according to the present invention maintains a comfortable and constant fine dust concentration in all the vehicles constituting one railway vehicle by measuring the amount of dust in each cabin so that the air quality is kept constant. to make it possible

Although the embodiment illustrating the technical idea of the present invention has been described above, the present invention is not limited to the configuration and operation as described above, and various changes to the present invention without departing from the scope of the technical idea described in the specification It will be well understood by those skilled in the art that and modifications are possible. Accordingly, all such suitable alterations and modifications and equivalents are to be considered as falling within the scope of the present invention.

10… control board
11… Microprocessor 12… replacement indicator
13… Integration time display unit 14... Accumulation function button
15… storage unit 16… mode setting unit
17… ID setting unit 18… signal processing unit
20… filter unit
21… Pre Filter 22… Hepa Filter
23… photocatalytic filter
30… Sirocco Pan
35… BLDC motor
41… UVC light source
42… UVA light source
45… dust sensor
50… case
51… Suction part 52... exhaust
53… Sensor fixing bracket 54… light source fixing bracket

Claims (3)

a case of a built-in method installed in the center of the ceiling of each cabin vehicle constituting one train;
a control board provided in the case to perform control according to a signal from the engine room control panel;
a dust sensor disposed on the intake side of the case to detect the amount of fine dust contained in the air introduced into the case and transmit it to the control board;
a sirocco fan provided in the case so that air in the cabin vehicle is introduced into the intake part of the case and then discharged into the vehicle through the exhaust part and operated by a BLDC motor whose speed is controlled by a control board;
A pre-filter that collects more than 85% of dust by weight method, a HEPA filter that can filter out more than 95% of 0.3㎛ particles and is disposed on the rear side of the pre-filter, and a ball-type honeycomb ceramic coated with a photocatalyst. a filter unit comprising a photocatalytic filter disposed on the rear side of the;
UVC light source for removing viruses collected in the HEPA filter by irradiating short-wavelength ultraviolet rays with a wavelength of 100 to 280 nm toward the pre-filter; and
It includes a UVA light source that irradiates long-wavelength ultraviolet rays with a wavelength of 320 to 400 nm toward the photocatalyst filter to remove ultrafine dust by the photochemical action of the photocatalyst,
Distributed, characterized in that it has a distributed control function that is provided with one control board per cabin vehicle and operates independently according to the amount of dust in the cabin, and a batch control function in which the control board of each cabin vehicle is collectively controlled Control-type air quality improvement device for railway vehicles. The method according to claim 1,
The dust sensor and UVC light source are fixed to the sensor fixing bracket installed on the suction side of the case,
The UVA light source is fixed to the light source fixing bracket installed in the case from the front of the sirocco fan.
The air quality improvement device for railway vehicles of the distributed control method, characterized in that the UVC light source and the UVA light source irradiate light in a range of 120 degrees. The method according to claim 1 or 2,
The control board includes a microprocessor, a signal processing unit that processes signals from the engine room control panel and transmits them to the microprocessor, a mode setting unit and ID setting unit for setting an air conditioning mode and ID, and an operating time for maintenance of the filter unit The integration time display unit that integrates and displays the time, the replacement display unit guides the replacement by blinking the LED when the set maximum usage time has elapsed, the integration function button to operate the integration time display unit, and the EEP memory to record the operating time of the device Distributed control method air quality improvement device for railway vehicles, characterized in that it comprises a storage made of.

Images