Fanless Fine Dust Collection and Noise Absorption Device

Abstract

To provide a fanless fine dust collection and noise absorption device that generates low concentration of ozone while maintaining a pin-type discharge part and collection efficiency.SOLUTION: A fanless fine dust collection and noise absorption device includes: a body part that has an inlet provided on one side and an outlet provided on the other side of the inlet; a sound absorption part that has a front sound absorption panel located on the front of the body part; and a dust collection part provided on one side of the front sound absorption panel, purifying external air flowing into the inlet of the body part and discharging the purified air through the outlet of the body part. The dust collection part includes: a housing that is installed adjacent to the inlet inside the body part; a large number of discharge plates that are arranged at regular intervals on the inlet side inside the housing and have discharge pins formed at regular intervals; a large number of collecting electrodes that are installed at a distance from the discharge pins on the outlet side and have polarity opposite to that of the discharge pins; and a large number of non-collecting electrodes that are arranged alternately with the collecting electrodes and have the same polarity as the discharge pins.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a dust collection and sound absorption device, and more particularly, to a fanless fine dust collection and noise absorption device that can remove fine dust generated in railways, roads, construction sites, etc. without power and can efficiently reduce noise.

Background Art

[0002] A soundproof wall is a wall for preventing noise from spreading by reflecting or absorbing noise, and is installed around railways, along roads, near schools, and around apartments, and can prevent noise from affecting residential life.

[0003] Thus, in most cases of soundproof walls, they are installed around railways and roads where noise is continuously generated. In railways and roads, in addition to the noise generated by vehicles, soot, fine dust, sand, etc. are generated along with the movement of vehicles and spread in the air. Therefore, these air pollutants may spread outside the soundproof wall and affect daily life.

[0004] Therefore, in order to reduce noise and air pollution, a dust collection device is installed together with a soundproof wall around railways and roads.

[0005] However, when the dust collection device and the soundproof wall are installed separately, there are problems in terms of cost. In the case of the dust collection device, a power device such as a blower unit for allowing external air to flow in order to remove dust contained in the external air is configured. Applying a blower unit to a soundproof wall applied to the wall surface of an underground station building and a tunnel, etc. has problems such as maintenance aspects, cost, failure due to a complex structure, concern about malfunction occurrence, and an increase in the size of the entire soundproof wall body.

[0006] In order to solve such problems, Korean Registered Patent Nos. 10-2284828 and 10-2284836 disclose a dust collection device that reduces noise and fine dust simultaneously.

[0007] However, while the aforementioned prior art has the advantage of not requiring a powered device such as a blower unit through dust collection using ion wind generated by corona discharge, it has the problem of high ozone concentration generated during corona discharge, making it difficult to put into practical use, and technological development to solve this problem is necessary.

[0008] Furthermore, the aforementioned prior art lacks a water-repellent structure in the discharge section itself, making it impossible to prevent unstable operation caused by sparks generated when water droplets adhere during washing. It also lacks sound-absorbing means that can attenuate sound waves incident on the holes in the sound-absorbing section.

[0009] In particular, existing dust collectors using corona discharge have the advantage of relatively lower discharge initiation voltage and operating voltage, resulting in stable discharge characteristics and durability when using a pin-type discharge section compared to a wire-type discharge section. However, they have the disadvantage of increasing ozone generation concentration. Therefore, there is a need to develop a new type of pin-type discharge section that can maintain collection efficiency (ion wind velocity) while keeping ozone generation concentration low. [Prior art documents] [Patent Documents]

[0010] KR10-2284836 B1 (2021.08.03.) KR10-2284828 B1 (2021.08.03.) [Overview of the Initiative] [Problems that the invention aims to solve]

[0011] The present invention was devised to solve the aforementioned problems, and the object of the present invention is to provide a fanless fine dust collector and noise absorber that maintains collection efficiency while having a low ozone generation concentration by providing a new form of pin-type discharge unit.

[0012] Another object of the present invention is to provide a fanless fine dust collector and noise absorber that facilitates washing with water to remove collected dust by applying a superhydrophobic design to the discharge plate and the discharge plate support base.

[0013] Another object of the present invention is to provide a fanless fine dust collector and noise absorber with improved noise absorption performance by incorporating an internal sound-absorbing panel that can attenuate sound waves incident on the sound-absorbing holes. [Means for solving the problem]

[0014] To solve the aforementioned problems, the fanless fine dust collection and noise absorption device according to the present invention includes: a main body having an inlet on one side and an outlet on the other side of the inlet; a sound absorption section having a front sound absorption panel located on the front of the main body; and a dust collection section provided on one side of the front sound absorption panel, which purifies the external air flowing into the inlet of the main body and discharges the purified air through the outlet of the main body, wherein the dust collection section is housed inside the main body adjacent to the inlet; and within the housed section, on the inlet side, for a certain period of time The device comprises: a number of discharge plates arranged at intervals, with discharge pins formed at regular intervals; a number of collection electrodes positioned at a distance from the discharge pins toward the outlet side and having the opposite polarity to the discharge pins; and a number of non-collection electrodes arranged alternately with the collection electrodes and having the same polarity as the discharge pins, wherein the thickness of the discharge pins is 0.01 to 1.0 mm, the distance between the discharge pins is 15 to 50 mm, and the ozone concentration generated when an ion wind is generated in the direction from the inlet to the outlet is less than 0.02 ppm due to the arrangement of the discharge pins, collection electrodes, and non-collection electrodes.

[0015] Furthermore, the distance between the discharge pin and the collection electrode, and the distance between the discharge pin and the non-collection electrode, are 10 to 40 mm.

[0016] Furthermore, the distance between the collection electrode and the non-collection electrode is 10 to 40 mm.

[0017] On the other hand, the discharge plate is formed from a long, strip-shaped plate, and isosceles triangular discharge sections where negative or positive voltages applied to the discharge plate converge are formed at regular intervals toward the collection electrode, and the discharge pins are formed at the corners of the ends of the discharge sections located on the collection electrode side.

[0018] Preferably, the discharge plate, including the discharge pins and discharge section, is made of one of the following metals: stainless steel, tungsten, plated steel, or plated tungsten, so as to have a certain thickness.

[0019] Furthermore, the housing is provided with a first support base and a second support base that are intersected to support the numerous discharge plates, and the lower end surfaces of the first support base and the second support base are formed in a sawtooth shape.

[0020] On the other hand, the front sound-absorbing panel consists of an inlet surface with numerous holes through which purified air is discharged and a non-inlet surface in which no holes are formed, the dust collection unit is installed on the non-inlet surface side of the front sound-absorbing panel, and the sound-absorbing unit further includes an internal sound-absorbing panel on the rear surface of the main body on the inlet surface side that can attenuate sound waves incident on the holes of the front sound-absorbing panel.

[0021] On the other hand, the fanless fine dust collection and noise absorption device according to the present invention consists of multiple units that can be installed in a continuous manner, and when installed in a continuous manner, sound-absorbing material can be provided between the main bodies of adjacent devices.

[0022] In the fanless fine dust collection and noise absorption device according to the present invention, when installed continuously, some of the devices can have sound-absorbing material installed in place of the dust collection section.

[0023] Furthermore, the fanless fine dust collection and noise absorption device according to the present invention may further include an emergency roll call control unit that senses whether or not the dust collection unit is abnormal, and a signal generating unit that generates an emergency signal according to the sensing result of the emergency roll call control unit. [Effects of the Invention]

[0024] The fanless fine dust collector and noise absorber according to the present invention has the advantage of obtaining a low ozone generation concentration while maintaining the collection efficiency (ion wind speed) by providing an optimal numerical range for the distance between discharge pins in the pin-type discharge part, the distance between the discharge pin and the collection (non-collection) electrode, the distance between the collection electrode and the non-collection electrode, and the thickness of the discharge plate (discharge part, discharge pin).

[0025] In addition, by forming a water-repellent structure on the discharge plate and the discharge plate support base, there is an advantage in minimizing the tension with water droplets during water washing and minimizing the phenomenon of water droplets sticking to the discharge plate.

[0026] In addition, by additionally providing an internal sound absorption panel capable of attenuating sound waves incident on the holes in the sound absorption part, there is an effect of further improving the noise attenuation performance.

Brief Description of the Drawings

[0027] [Figure 1] Figure 1 is a perspective view of the fanless fine dust collector and noise absorber according to the present invention. [Figure 2] Figure 2 is a side cross-sectional view of the fanless fine dust collector and noise absorber according to the present invention. [Figure 3] Figure 3 is a front cross-sectional view of the fanless fine dust collector and noise absorber according to the present invention. [Figure 4] Figure 4 is a cross-sectional view for explaining the dust collection part of the fanless fine dust collector and noise absorber according to the present invention. [Figure 5] Figure 5 is an enlarged side cross-sectional view for explaining the dust collection part of the fanless fine dust collector and noise absorber according to the present invention. [Figure 6] Figure 6 is an enlarged front cross-sectional view of part A in Figure 3. [Figure 7] Figures 7(a) to (c) are diagrams illustrating the application of the fanless fine dust collector and noise absorber according to the present invention to an installation structure. [Figure 8] Figures 8(a) and (b) are diagrams illustrating an example of continuously installing the fanless fine dust collector and noise absorber according to the present invention. [Figure 9] Figure 9 is a diagram illustrating the flow chart for emergency roll call during the use of the fanless fine dust collection and noise absorption device according to the present invention. [Figure 10] Figure 10 is a diagram illustrating the assembled state of the fanless fine dust collection and noise absorption device according to the present invention. [Figure 11] Figure 11 is a graph comparing the ion wind velocity of a wire-type discharge section and a pin-type discharge section according to an embodiment of the present invention. [Figure 12] Figure 12 is a graph comparing the ozone generation concentrations of different pin-type discharge sections according to embodiments of the present invention. [Modes for carrying out the invention]

[0028] Embodiments of the present invention will be described below with reference to the drawings. However, detailed descriptions of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted.

[0029] The present invention relates to a fanless fine dust collector and noise absorption device (100) that can remove fine dust generated in railways, roads, construction sites, etc. without power, and efficiently reduce noise. As shown in Figures 7(a) to (c), it can be used as a cover for the lower end wall of a tunnel and for utility tunnels, and can also be applied to various installation structures (150), such as utility tunnels under station platforms and general sound barriers. In addition, it can be applied to all areas where noise and fine dust are to be simultaneously reduced in roads, sound barriers, construction sites, etc.

[0030] Referring to Figures 1 to 6, the fanless fine dust collection and noise absorption device (100) according to the present invention may include a main body (110), a sound absorption section (120), and a dust collection section (130).

[0031] The main body (110) provides a frame on which a sound-absorbing section (120) and a dust-collecting section (130) can be installed, and can consist of a front section to which a front sound-absorbing panel (121) is fixed, two side sections connected to both sides of the front sound-absorbing panel (121) and extending for a certain length, and a rear section connected to both side sections, with the bottom and top sections being open.

[0032] The open upper part of the main body (110) may be an inlet (111) through which outside air flows into the interior, and the open lower part of the main body (110) may be an outlet (112) through which purified air, from which dust contained in the outside air has been removed by the dust collection unit (130), is discharged.

[0033] Inside the main body (110), a dust collection unit (130) is installed, which is fixed by both sides and the rear of the main body (110). An internal sound-absorbing panel (123) is further installed below the dust collection unit (130) and fixed to the rear of the main body (110).

[0034] Furthermore, a platform (113) extending a certain length from both sides and the rear into the internal space can be provided in the internal space of the main body (110) so that the dust collection unit (130) can be securely attached.

[0035] The outlet (112) of the main body (110) described above may be an open structure without a cover or other structure, and an air guide section (not shown) may be further installed to facilitate the discharge of purified air.

[0036] The sound-absorbing section (120) includes a front sound-absorbing panel (121) that forms the front of the main body (110) and an internal sound-absorbing panel (123) that is fixed to the rear of the main body (110) so as to be located below the dust collection section (130) inside the main body (110), and reflects or absorbs noise to prevent noise from spreading.

[0037] The front sound-absorbing panel (121) and the internal sound-absorbing panel (123) are sound-absorbing materials that absorb noise and can be manufactured in a flat plate shape.

[0038] The front sound-absorbing panel (121) can consist of an inlet surface (121a) provided with numerous holes (122) through which purified air is discharged, and a non-inlet surface (121b) in which no holes (122) are formed.

[0039] A dust collection unit (130) can be installed on one side of the non-inflow surface (121b) of the front sound-absorbing panel (121).

[0040] The halls (122) can be provided in large numbers on the front sound-absorbing panel (121) to allow purified air to be discharged, and can serve as passages to discharge purified air to the outside of the main unit (110) while reducing noise.

[0041] The aforementioned front sound-absorbing panel (121) can also serve to protect the dust collection unit (130) from external impacts.

[0042] Furthermore, the internal sound-absorbing panel (123) plays a role in allowing sound waves incident on the hole (122) of the front sound-absorbing panel (121) to be absorbed in the resonant frequency band by the rear air layer inside the main body (110), and then to be attenuated again by hitting the sound-absorbing material. This further improves the noise attenuation performance of the fanless fine dust collection and noise absorption device (100) according to the present invention.

[0043] The internal sound-absorbing panel (123) is formed in a flat, plate-like structure without holes, with a thickness that does not block the outlet (112) of the main body (110).

[0044] In the present invention, it is preferable that the front sound-absorbing panel (121) and the internal sound-absorbing panel (123) forming the sound-absorbing section (120) be made of an aggregate-type sound-absorbing material having a sound absorption coefficient of NRC 0.7 or higher, non-combustibility suitable for the semi-non-combustible standard, and freeze-thaw resistance with a compressive strength ratio of 70% or higher.

[0045] The dust collection unit (130) can be installed on one side of the front sound-absorbing panel (121), specifically on the non-inlet side (121b) of the front sound-absorbing panel (121).

[0046] Such a dust collection unit (130) can purify external air flowing into the inlet (111) of the main body (110) without power, and discharge the purified air through the outlet (112) of the main body (110) and the holes (122) of the front sound-absorbing panel (121). It may include a housing (131), a discharge plate (132), a collection electrode (133), and a non-collection electrode (134).

[0047] The housing (131) can provide a frame on which a discharge plate (132), a collection electrode (133), and a non-collection electrode (134) can be installed, and may include a frame (131a), a discharge plate support base (131b), and an electrode support base (131c).

[0048] In this case, the housing (131) is provided with handles (not shown) on both external sides so that it can be easily replaced, or it can be easily removed from the fanless fine dust collection and noise absorption device (100) when washing with water.

[0049] The frame (131a) is securely fixed at its lower end to the base (113) of the main body (110), and its circumferential surface can be in close contact with both sides and the rear surface of the main body (110).

[0050] In this case, as shown in Figure 10, brackets (130a) are provided protruding from the frame (131a) of the dust collection unit (130) and are attached to both sides of the main body (110), and the assembly configuration can be such that the unit is fixedly installed to the main body (110) by fastening means such as bolts.

[0051] The discharge plate support base (131b) is installed on the upper side of the frame (131a) and can support the discharge plates (132) at regular intervals.

[0052] The electrode support base (131c) is installed on the underside of the frame (131a) and can support the collection electrode (133) and the non-collection electrode (134) at regular intervals.

[0053] The discharge plate support base (131b) consists of a first support base (1311) to which each discharge plate (132) is connected, and a second support base (1322) that supports the first support base (1311) at regular intervals relative to the housing (131) so that the discharge plates (132) can be installed at regular intervals.

[0054] In other words, the discharge plates (132) are supported by a discharge plate support base (131b) and can be arranged in large numbers at regular intervals on the inlet (111) side inside the housing (131).

[0055] In this case, the lower end surfaces of the first support base (1311) and the second support base (1322) of the discharge plate support base (131b) are formed in a sawtooth shape, which minimizes the tension with water droplets during washing and prevents water droplets from adhering to them. This prevents sparks generated by water droplets adhering to the discharge plate (132), and has the effect of enabling stable use of the device.

[0056] The discharge plate (132) is a metal plate configured to generate corona discharge when a negative or positive voltage is applied, and can generate ions and act as an emitter.

[0057] Referring to Figure 6, in the present invention, the discharge plate (132) is formed from a long, strip-shaped plate, and isosceles triangular discharge sections (132a) where negative or positive voltages applied to the discharge plate (132) converge are formed at regular intervals toward the collection electrode (133) and the non-collection electrode (134), and discharge pins (132b) where corona discharge occurs are formed at the corners of the ends of the discharge sections (132a) located toward the collection electrode (133) and the non-collection electrode (134).

[0058] The discharge plate (132) is also formed such that the lower end surface between the discharge sections (132a) has a water-repellent structure (132c) that minimizes tension with water droplets during washing, thereby minimizing the amount of water droplets that adhere to the discharge plate (132).

[0059] The discharge plate (132) can be installed by welding or other means to the first support base (1311), and the discharge section (132a) and discharge pin (132b) can be integrally molded with the discharge plate (132) or molded separately and then joined. The discharge plate (132), including the discharge section (132a) and discharge pin (132b), is made of a metal such as stainless steel, tungsten, plated steel, or plated tungsten to have a certain thickness.

[0060] The present invention is characterized by obtaining a low ozone generation concentration while maintaining collection efficiency (ion wind velocity) by setting the following: the distance between discharge pins (p), the distance between the discharge pins and the collection (non-collection) electrode (d), the distance between the collection electrode and the non-collection electrode, and the thickness (t) of the discharge plate (discharge section, discharge pins).

[0061] - Distance between discharge pins (p): 15-50 mm - Distance (d) between the discharge pin and the collection (non-collection) electrode: 10-40 mm - Distance between the collection electrode and the non-collection electrode: 10-40 mm - Thickness (t) of discharge plate (discharge section, discharge pin): 0.01~1.0mm

[0062] The aforementioned numerical range was achieved by making the thickness of the discharge pins (132b) in the pin-type discharge section extremely thin (for example, 0.025 mm) and increasing the spacing between the discharge pins (132b) compared to the existing design. As a result, while maintaining the outlet air velocity and collection efficiency at a similar level to the wire-type discharge section (see Figure 11), it was confirmed that the ozone generation concentration decreased compared to the existing pin-type design (see Figure 12).

[0063] In particular, the pin-type discharge unit having a numerical range according to the present invention was shown to have an extremely low ozone generation concentration of less than 0.02 ppm, as shown in Figure 12. This is similar to the level achieved by adding an ozone reduction filter, and it was confirmed that the concentration is maintained at a constant level even after time has passed (in the case of a device using an existing pin-type discharge unit, ozone was generated at a level of 0.1 ppm).

[0064] The collection electrode (133) is positioned away from the discharge pin (132b) towards the outlet (112) and can consist of a number of first metal plates having opposite polarity to the discharge pin (132b) so as to guide the ions generated at the discharge pin (132b), and can generate an ion wind together with the discharge pin (132b). In this case, the collection electrode (133) can act as a collector.

[0065] The numerous first metal plates forming the collection electrode (133) are arranged parallel to each other at regular intervals and can be arranged alternately at a first distance in the direction of the numerous discharge pins (132b) and the outlet (112).

[0066] The non-collection electrode (134) can consist of a number of second metal plates having the same polarity as the discharge pin (132b).

[0067] A plurality of second metal plates forming a non-collection electrode (134) are arranged alternately and parallel to a plurality of first metal plates forming a collection electrode (133), and can be arranged side by side at a second distance greater than the first distance in the direction of a plurality of discharge pins (132b) and an outlet (112).

[0068] The dust collection unit (130) configured as described above can remove dust contained in the outside air without a blower unit and without power by applying voltage to the discharge plate (132), collection electrode (133), and non-collection electrode (134).

[0069] Specifically, when the discharge pin (132b) generates ions, the generated ions are guided to the collection electrode (133) and can generate an ionic wind that flows towards the outlet (112).

[0070] In other words, as ions generated at the discharge pin (132b) move to the collection electrode (133), which is made of a first metal plate having the opposite polarity to the discharge pin (132b), momentum is transferred to the neutral air molecules through collisions with them, generating an ionic wind. This ionic wind allows external air to flow through the gaps between the collection electrodes (133) to the outlet (112) without the need for a blower unit or power.

[0071] At this time, fine dust particles contained in the outside air flowing in by the ion wind collide with ions, causing the particles to become charged, and these charged particles move to and adhere to the first metal plate, which is the collection electrode (133).

[0072] In other words, dust contained in the outside air collides with ions generated at the discharge pin (132b) and becomes charged with the same polarity as the discharge pin (132b). The charged dust is then collected by the collection electrode (133) due to an attractive force with the collection electrode (133) which has the opposite polarity. In addition, the charged dust is collected by the collection electrode (133) while being prevented from flowing to the outlet (112) by a repulsive force with the non-collection electrode (134) which has the same polarity.

[0073] On the other hand, by positioning the discharge plate (132) above the collecting electrode (133) and non-collecting electrode (134), water droplets that accumulate on each component during washing are not only removed by gravity as they fall downward towards the outlet (112) formed therein, but the ionic wind generated when the discharge plate (132), collecting electrode (133), and non-collecting electrode (134) are operating increases the force that removes water droplets, minimizing the amount of water droplets remaining on the discharge plate (132), collecting electrode (133), and non-collecting electrode (134), thereby enhancing the water-repellent effect and preventing the generation of sparks.

[0074] Furthermore, the dust collected on the collection electrode (133) can also be removed using a mobile high-pressure washer and a vacuum cleaner.

[0075] On the other hand, the arrangement of the inlet (111) and outlet (112) of the main body (110) is determined by the flow direction of the ion wind generated by the discharge plate (132), collection electrode (133), and non-collection electrode (134) of the dust collection unit (130). In the above example, the discharge plate (132), collection electrode (133), and non-collection electrode (134) are arranged vertically in that order, and the ion wind is generated from the top to the bottom. As a result, the inlet (111) and outlet (112) are formed at the top and bottom of the main body (110), respectively. External air flows into the upper inlet (111) without power due to the flow of the ion wind, and the purified air is discharged through the lower outlet (112). However, if the vertical arrangement changes when installing the dust collection unit (130), the vertical arrangement of the inlet (111) and outlet (112) can also be changed to correspond to the flow of the ion wind.

[0076] The fanless fine dust collection and noise absorption device (100) according to the present invention described above is a fanless dust collection device without a blower unit, and includes a sound-absorbing section (120) made of high-strength sound-absorbing material as one of its components, thereby ensuring the durability of the device, allowing for diverse guidance of the airflow direction according to the structure of the sound-absorbing section (120), and by installing the dust collection section (130) inside the main body (110), the internal air layer of the main body (110) is structured in a way that improves the acoustic performance compared to general soundproof walls, such as improving the low-frequency noise reduction performance, and the sound-absorbing section (120) has the effect of preventing the high voltage applied to the dust collection section (130) from being transmitted to the user or affecting the outside.

[0077] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention simultaneously reduces noise and fine dust. Test results from an accredited testing institution showed that a single module measuring 700 × 260 × 90 (mm) alone achieved a reduction efficiency of 70% or more of 0.3 μm fine dust particles, demonstrating excellent performance as a fanless dust collector. It was also found that the reduction efficiency of fine dust can be further improved by adjusting the size of the device and the applied voltage. The sound absorption performance varied depending on the thickness of the sound-absorbing material and whether or not it was perforated. When a 50 mm thick flat plate type was applied, it was possible to secure excellent performance with an NRC of 0.75 or higher.

[0078] On the other hand, by continuously installing the fanless fine dust collection and noise absorption device (100) according to the present invention, the fine dust collection efficiency and noise reduction performance can be improved. When installed continuously, as shown in Figure 8(a), the sound absorption capacity can be increased by adding sound-absorbing material (140) between the main bodies (110) of adjacent fanless fine dust collection and noise absorption devices (100). When sound-absorbing material (140) is added between the main bodies (110) of adjacent fanless fine dust collection and noise absorption devices (100), the sound absorption rate improves by 10% or more.

[0079] Furthermore, as shown in Figure 8(b), the dust collection section (130) is not installed entirely inside the fanless fine dust collection and noise absorption device (100). Instead, sound-absorbing material (140a) can be added in place of the dust collection section (130) in some parts to improve the sound absorption capacity.

[0080] On the other hand, as shown in Figure 9, the fanless fine dust collection and noise absorption device (100) according to the present invention is equipped with an emergency roll call control unit (150) and a signal generating unit (152) that can check for malfunctions.

[0081] In other words, the emergency roll call control unit (150) detects whether or not a malfunction such as a broken wire has occurred in the dust collection unit (130), and in accordance with this detection result, the signal generating unit (152), such as a lighting fixture installed above / below the fanless fine dust collection and noise absorption device (100), is set to call out and emit light, enabling workers to select the malfunctioning device and perform maintenance such as repair or replacement.

[0082] Thus, the fanless fine dust collection and noise absorption device (100) according to the present invention is configured with a discharge pin (132b) that generates ions and a collection electrode (133) that has the opposite polarity to the discharge pin (132b) and guides ions to generate an ion wind, and by causing the generated ion wind to draw in outside air, dust contained in the outside air (dust that has been charged by colliding with ions) can be collected by the attractive force of the collection electrode (133) without a blower unit or power, and the device can be made compact.

[0083] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention has a non-collection electrode (134) having the same polarity arranged next to a discharge pin (132b) between the collection electrodes (133), so that charged dust contained in the outside air is pushed out by a repulsive force and the charged dust can be more easily collected by the collection electrodes (133) located on both sides.

[0084] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention has a dust collection section (130) consisting of a discharge plate (132), a collection electrode (133), and a non-collection electrode (134), which is installed on the front sound absorption panel (121) of the sound absorption section (120). This allows the dust collection section (130) to be protected from external impacts by the front sound absorption panel (121), and enables efficient reduction of both noise and fine dust simultaneously.

[0085] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention can efficiently reduce noise and fine dust simultaneously, can be easily constructed, can be easily installed in narrow spaces such as tunnels, and can also be easily maintained.

[0086] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention generates an ionic wind from the inlet (111) to the outlet (112) by arranging the discharge plate (132), collection electrode (133), and non-collection electrode (134), which has the effect of minimizing the amount of water remaining on the discharge plate (132), collection electrode (133), and non-collection electrode (134) due to gravity and the ionic wind during washing.

[0087] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention has the effect of facilitating water washing to remove collected dust by applying a superhydrophobic design to the discharge plate (132) and the discharge plate support base (131b).

[0088] Furthermore, the fanless fine dust collection and noise absorption device (100) according to the present invention has the effect of further improving noise attenuation performance by additionally providing an internal sound absorption panel (123) in the sound absorption section (120) that can attenuate sound waves incident on the hole (122).

[0089] In particular, the fanless fine dust collection and noise absorption device (100) according to the present invention has the advantage of providing an optimal numerical range for the distance between discharge pins in the pin-type discharge section, the distance between the discharge pins and the collection (non-collection) electrode, the distance between the collection electrode and the non-collection electrode, and the thickness of the discharge plate (discharge section, discharge pins), thereby achieving a low ozone generation concentration while maintaining collection efficiency (ion wind velocity).

[0090] Although embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the embodiments disclosed herein and in the accompanying drawings are used solely for the purpose of facilitating the technical idea of ​​the present invention and are not used to limit the scope of the present invention as defined in the claims. Accordingly, a person with ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible. [Explanation of symbols]

[0091] 100: Fanless fine dust collection and noise absorption device 110: Main unit 111:Inlet 112: Outlet 113: stand 120: Sound-absorbing section 121: Front sound-absorbing panel 121a: Inflow surface 121b: Non-inflow surface 122: Hall 123: Internal sound-absorbing panel 130: Dust collection unit 131: Cabinet 131a: Frame 131b:Discharge plate support stand 131c: Electrode support stand 132:Discharge plate 132a: Discharge part 132b: Discharge pin 132c: Water-repellent structure 133: Collection electrode 134: Non-collecting electrode 140, 140a: Sound-absorbing material 1311: First support base 1322: Second support base

Claims

1. A main body having an inlet on one side and an outlet on the other side of the inlet; Sound-absorbing section equipped with a front sound-absorbing panel located on the front of the main body; and It includes a dust collection unit provided on one side of the front sound-absorbing panel, which purifies the external air flowing into the inlet of the main body and discharges the purified air through the outlet of the main body, The aforementioned dust collection unit is A housing installed inside the main body adjacent to the inlet; A number of discharge plates, each having discharge pins formed at regular intervals, are arranged on the inlet side within the aforementioned housing; A number of collection electrodes, positioned at a distance from the discharge pin towards the outlet side and having opposite polarity to the discharge pin; A number of non-collection electrodes, arranged alternately with the collection electrodes and having the same polarity as the discharge pins; A fanless fine dust collector and noise absorber characterized in that the thickness of the discharge pins is 0.01 to 1.0 mm, the distance between the discharge pins is 15 to 50 mm, the distance between the discharge pins and the collection electrode and the distance between the discharge pins and the non-collection electrode is 10 to 40 mm, the distance between the collection electrode and the non-collection electrode is 10 to 40 mm, and the arrangement of the discharge pins, collection electrode and non-collection electrode results in an ozone concentration of less than 0.02 ppm when generating ion wind from the inlet to the outlet.

2. In claim 1, The discharge plate is formed from a long, strip-shaped plate, and isosceles triangular discharge sections, where negative or positive voltages applied to the discharge plate converge, are formed at regular intervals toward the collection electrode. The fanless fine dust collection and noise absorption device is characterized in that the discharge pin is formed at the corner of the end of the discharge section located on the collection electrode side.

3. In claim 2, A fanless fine dust collector and noise absorber, characterized in that the discharge plate, including the discharge pins and discharge section, is made of one of the following metals: stainless steel, tungsten, plated steel, or plated tungsten, so as to have a certain thickness.

4. In claim 1, The fanless fine dust collection and noise absorption device is characterized in that the housing is provided with a first support base and a second support base that are intersected to support the plurality of discharge plates, and the lower end surfaces of the first support base and the second support base are formed in a sawtooth shape.

5. In claim 1, The aforementioned front sound-absorbing panel consists of an inlet surface with numerous holes through which purified air is discharged, and a non-inlet surface in which no holes are formed. The dust collection unit is installed on the non-inflow side of the front sound-absorbing panel. The sound-absorbing section is further provided with an internal sound-absorbing panel on the rear surface of the main body on the inlet side, which can attenuate sound waves incident on the holes of the front sound-absorbing panel, making it a fanless fine dust collection and noise absorption device.

6. In claim 1, The aforementioned device consists of multiple units that can be installed in a continuous manner, and is characterized in that sound-absorbing material is provided between the bodies of adjacent devices when they are installed in a continuous manner.

7. In claim 6, The aforementioned device is a fanless fine dust collection and noise absorption device characterized in that, when installed continuously, some of the devices have sound-absorbing material installed in place of the dust collection section.

8. In claim 1, An emergency call control unit that senses whether the dust collection unit is abnormal or not, A fanless fine dust collection and noise absorption device further comprising a signal generating unit that generates an emergency signal in accordance with the sensing result of the emergency roll call control unit.

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