Electrical dust collection device and control method thereof

Abstract

The disclosed electric dust collecting device includes a dust collecting sheet that emits ions and collects aerosols charged by the ions from air flowing along an air flow path through the electric dust collecting device; a power supply portion that is electrically connected to the dust collecting sheet; a plate-shaped structure that is disposed upstream of the dust collecting sheet in the air flow path and includes at least one of a filter mesh and a grid having a plurality of openings; a potential stabilizing portion that is provided between the plate-shaped structure and a ground portion to stabilize a potential of the plate-shaped structure; and a control portion that controls the power supply portion to supply a power source to the dust collecting sheet.

Description

Technical Field

[0001] The disclosed invention relates to an electrostatic precipitator comprising a dust collection plate that generates ions and captures aerosols in the air and a structure for diffusing ions. Background Technology

[0002] High concentrations of aerosols in enclosed spaces such as homes, rooms, shopping malls, factories, and offices can pose health risks. These aerosols can be generated in confined spaces by activities such as smoking, cooking, cleaning, welding, and grinding. Electrostatic precipitators, used to remove these aerosols, can be employed in air purifiers or air conditioners with air purification functions.

[0003] Typically, an electrostatic precipitator can include: a charging section that charges airborne aerosols to a positive (+) or negative (-) electrode through discharge; and a dust collection section that collects the charged aerosols. In existing electrostatic precipitators, because the charging section and the dust collection section are independently constructed, there are many components, requiring assembly processes for each component, and the electrostatic precipitator is relatively thick.

[0004] In addition, existing electrostatic precipitators do not have structures for diffusing ions generated from charged parts. Summary of the Invention

[0005] Technical issues

[0006] The disclosed invention provides an electrostatic precipitator including a structure for diffusing ions generated by a dust collection plate.

[0007] The disclosed invention provides an electrostatic precipitator and its control method that, by providing a potential stabilizing part between the structure that diffuses ions and the grounding part to stabilize the potential of the structure, enables smooth discharge at the high-voltage electrode of the dust collection plate while preventing ions from accumulating on the structure.

[0008] Technical solution

[0009] An electrostatic precipitator according to one embodiment may include: a dust collection plate that releases ions and captures aerosols charged by the ions from air flowing through the electrostatic precipitator along an airflow path; a power supply unit that is electrically connected to the dust collection plate; a plate-shaped structure disposed upstream of the dust collection plate along the airflow path and including at least one of a filter screen and a grid having a plurality of openings; a potential stabilizing unit disposed between the plate-shaped structure and a grounding unit to stabilize the potential of the plate-shaped structure; and a control unit that controls the power supply unit to supply power to the dust collection plate.

[0010] The potential stabilization unit may include a relay that connects or disconnects the plate-shaped structure from the grounding part, and the control unit may control the opening or closing of the relay based on a preset period.

[0011] The control unit can set the closing time of the relay to be shorter than the opening time of the relay.

[0012] The potential stabilizing unit may further include an RC circuit that can be connected to the plate-shaped structure and connected in parallel with the relay.

[0013] The potential stabilizing part may include a resistive element.

[0014] The plate-shaped structure can be formed using the conductive material.

[0015] The plate-shaped structure may be formed using a semi-conductive material with uniform resistance and may include: a first portion formed using an insulator; and a second portion formed using a conductive or semi-conductive material.

[0016] According to one embodiment, the electrostatic precipitator may further include: a conductive component disposed at least a portion of the edge of the plate-shaped structure.

[0017] The conductive component may have a bent shape to surround the edge of the plate-shaped structure.

[0018] The conductive component may be formed between the filter screen and the grille.

[0019] The plate-shaped structure can be configured as a quadrilateral, and the conductive components can be symmetrically arranged on a first side and a second side opposite to the first side of the plate-shaped structure.

[0020] The plate-shaped structure can be configured as a quadrilateral, and the conductive component can include: a first conductive component disposed adjacent to a first vertex of the plate-shaped structure; and a second conductive component disposed adjacent to a second vertex located on the diagonal of the first vertex, wherein the first length of the first conductive component and the second length of the second conductive component can be shorter than the length of one side of the plate-shaped structure.

[0021] According to one embodiment, the electrostatic precipitator may further include an insulating component disposed on the outside of the conductive component in a manner that covers the conductive component.

[0022] The dust collection plate may include: a plurality of high-voltage electrodes, including a first dielectric layer and a first conductive electrode layer, and subjected to a high voltage, wherein a portion of the first conductive electrode layer is exposed to the outside through an opening in the first dielectric layer; and a plurality of low-voltage electrodes, including a second dielectric layer and a second conductive electrode layer printed inside the second dielectric layer, arranged alternately with the plurality of high-voltage electrodes and subjected to a low voltage.

[0023] A control method for an electrostatic precipitator, the precipitator comprising: a dust collection plate for capturing ionized aerosols from air flowing through the precipitator along an airflow path; and a filter assembly disposed upstream of the dust collection plate along the airflow path. According to one embodiment, the control method for the electrostatic precipitator may include the following steps: controlling a power supply unit to supply power to the dust collection plate; opening a relay disposed between the filter assembly and a grounding portion based on the power supply to the dust collection plate; and controlling the relay to repeatedly close and open based on a preset cycle.

[0024] The closing time of the relay can be set to be shorter than the opening time of the relay.

[0025] According to another embodiment, the electrostatic precipitator may include: a dust collection plate that releases ions and captures aerosols charged by the ions; a power supply unit electrically connected to the dust collection plate; a plate-shaped structure disposed upstream of the dust collection plate in the airflow path, including at least one of a filter screen and a grid having a plurality of openings; a conductive component disposed on at least a portion of the edge of the plate-shaped structure; and a resistive element disposed between the conductive component and a grounding portion to stabilize the potential of the plate-shaped structure.

[0026] The plate-shaped structure may be formed entirely using a semi-conductive material with uniform resistance, or may include a first part formed using an insulator and a second part formed using a conductive or semi-conductive material.

[0027] The conductive component may have a bent shape to surround the edge of the plate-shaped structure.

[0028] The conductive component may be formed between the filter screen and the grille.

[0029] Technical effect

[0030] In the disclosed electrostatic precipitator, by arranging the structure for diffusing ions upstream of the ion-generating collection plate in the airflow path, the ions can be easily diffused into the external space.

[0031] In the disclosed electrostatic precipitator and its control method, by arranging a potential stabilizing part between the structure that diffuses ions and the grounding part to stabilize the potential of the structure, it is possible to smoothly discharge at the high-voltage electrode of the dust collection plate while preventing ions from accumulating in the structure.

[0032] In the disclosed electrostatic precipitator, conductive components are provided at the edges of the structure used for ion diffusion, making it easier to diffuse the ions generated by the precipitator plate.

[0033] The disclosed electrostatic precipitator includes structures and conductive components that can create a uniform electric field, thereby increasing the charge on aerosols. Furthermore, even when the structures are arranged close to the collection plates, the generation of sparks and discharge noise can be prevented. Therefore, the collection efficiency of aerosols in the air can be improved. Attached Figure Description

[0034] Figure 1 An electrostatic precipitator according to one embodiment is shown.

[0035] Figure 2 This is an exploded view of a dust collection assembly according to one embodiment.

[0036] Figure 3 This is an exploded view of a filtering component according to one embodiment.

[0037] Figure 4 The configuration of an electrostatic precipitator according to one embodiment is illustrated in the figures.

[0038] Figure 5 A high-voltage electrode according to a first embodiment is shown.

[0039] Figure 6 A low-voltage electrode according to the first embodiment is shown.

[0040] Figure 7 A high-voltage electrode according to a second embodiment is shown.

[0041] Figure 8 A high-voltage electrode according to a third embodiment is shown.

[0042] Figure 9 A low-voltage electrode according to a second embodiment is shown.

[0043] Figure 10 This is a flowchart illustrating a control method for an electrostatic precipitator according to an embodiment.

[0044] Figure 11a , Figure 11b , Figure 11c as well as Figure 11d The operation of a relay installed in an electrostatic precipitator according to one embodiment is shown.

[0045] Figure 12 This is a graph showing the relative potential and relative ion concentration of a filter assembly that vary due to the operation of a relay provided in an electrostatic precipitator according to one embodiment.

[0046] Figure 13 An additional embodiment of the electrostatic precipitator, which also includes an RC circuit, is shown.

[0047] Figure 14 This is a graph showing the relative potential and relative ion concentration of a filter element that varies by the operation of a relay in an electrostatic precipitator including an RC circuit.

[0048] Figure 15 An electrostatic precipitator according to another embodiment, including an ion release section, is illustrated in schematic form.

[0049] Figure 16 It is shown in Figure 15 The graph shows the relative potential of the filter components during operation of the electrostatic precipitator.

[0050] Figure 17 This is an exploded view of a filtering component according to another embodiment.

[0051] Figure 18 A magnified view shows a portion of the filter screen included in the filter assembly.

[0052] Figure 19 It is shown in a diagram. Figure 17 The structure of the electrostatic precipitator shown is as follows.

[0053] Figure 20 A first configuration of a conductive component disposed on a filter assembly is shown.

[0054] Figure 21 A second form of the conductive component disposed on the filter assembly is shown.

[0055] Figure 22 An example is shown where conductive components are positioned at the edge of a grille.

[0056] Figure 23 An example is shown where conductive components are positioned at the edge of the filter screen.

[0057] Figure 24 An electrostatic precipitator according to yet another embodiment is shown.

[0058] Figure 25 , Figure 26 as well as Figure 27 Various embodiments of symmetrically arranged conductive components are shown.

[0059] Figure 28, Figure 29 as well as Figure 30 Various embodiments of asymmetrically arranged conductive components are shown. Detailed Implementation

[0060] The embodiments described in this specification and the configurations illustrated in the accompanying drawings are merely preferred examples of the disclosed invention. Various modifications that could replace the embodiments and drawings described in this specification were possible at the time of filing of this application. The same reference numerals or symbols disclosed in the various drawings of this specification denote components or constituent elements that substantially perform the same function.

[0061] Furthermore, the terminology used in this specification is for illustrative purposes and is not intended to limit or restrict the disclosed invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. In this specification, terms such as "comprising" or "having" are intended to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, without precluding the presence or additional possibility of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0062] Furthermore, terms such as "first" and "second," which include ordinal numbers, used in this specification can be used to describe various constituent elements, but the constituent elements are not limited by these terms; the terms are only used to distinguish one constituent element from another. For example, without departing from the scope of the claims of this invention, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element. The term "and / or" includes a combination of multiple related described items or one of multiple related described items.

[0063] The terms “front end”, “rear end”, “upper part”, “lower part”, “front surface”, “rear surface”, “upper end”, “lower end”, etc., used in the following description are defined based on the accompanying drawings, and the shape and position of each component are not limited by these terms.

[0064] Throughout this specification, when referring to a part being "connected" to another part, this includes not only direct connections but also indirect connections, including connections via wireless communication networks or connections mediated by other parts.

[0065] In addition, terms such as “~part,” “~device,” “~block,” “~component,” and “~module” can refer to a unit that performs at least one function or operation. For example, such terms can refer to at least one piece of hardware such as a field-programmable gate array (FPGA) or application-specific integrated circuit (ASIC), at least one piece of software stored in memory, or at least one program processed by a processor.

[0066] The symbols assigned to each step are for the purpose of identifying each step. These symbols do not indicate the order in which the steps are performed. Unless a specific order is explicitly stated in the context, the steps may be performed in a different order than that stated above.

[0067] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0068] Figure 1 An electrostatic precipitator according to one embodiment is shown. Figure 2 An exploded view of a dust collection assembly according to one embodiment is shown. Figure 3 This is an exploded view of a filtering component according to one embodiment.

[0069] The electrostatic precipitator 1 is a device used to remove aerosols generated by activities such as smoking, cooking, cleaning, welding, and grinding within a predetermined space. The electrostatic precipitator 1 can be installed inside devices capable of performing air filtration functions, such as air conditioners or air purifiers.

[0070] An air purifier or air conditioner (not shown) may include: an intake (not shown) for receiving outside air; an electrostatic precipitator 1 for filtering the air flowing in through the intake; a fan (not shown) for circulating the air; and an exhaust (not shown) for discharging the air filtered by the filter components. With the operation of the fan, air can flow through the intake, the electrostatic precipitator 1, and the exhaust.

[0071] Devices such as air purifiers or air conditioners may also include a variety of filtration devices in addition to the electrostatic precipitator 1. For example, micro-dust filters and / or granular activated carbon filters in the form of non-woven fabric made of polypropylene resin or polyethylene resin may be selectively provided.

[0072] Reference Figure 1 The electrostatic precipitator 1 may include a dust collection component 2 and a filter component 3. The dust collection component 2 and the filter component 3 may be arranged separately. Preferably, the filter component 3 may be arranged separately from the dust collection component 2 at a distance of 4 mm or more and 10 mm or less.

[0073] Air can pass through the filter assembly 3 and then through the dust collection assembly 2. That is, the filter assembly 3 can be arranged upstream of the dust collection assembly 2 in the airflow path. For example, when the electrostatic precipitator 1 is arranged vertically relative to the ground and the air flows from front to rear, the filter assembly 3 can be located in front of the dust collection assembly 2.

[0074] As another example, when the electrostatic precipitator 1 is arranged horizontally relative to the ground and air flows from bottom to top, the filter assembly 3 can be located below the dust collection assembly 2. The arrangement of the filter assembly 3 and the dust collection assembly 2 is not limited to the example. Various arrangements in which air passes through the filter assembly 3 first can be applied.

[0075] Reference Figure 1 and Figure 2 The dust collection assembly 2 may include a dust collection plate 10 and a cover 20 covering the dust collection plate 10. The cover 20 may be a frame shape surrounding the outline of the dust collection plate 10. The cover 20 of the dust collection assembly 2 may include a first cover 21 and a second cover 23. The first cover 21 and the second cover 23 may be combined. The dust collection plate 10 may be disposed between the first cover 21 and the second cover 23 and may be protected by the first cover 21 and the second cover 23.

[0076] When the dust collection assembly 2 is arranged vertically relative to the ground, the first cover 21 can be located in front of the dust collection plate 10, and the second cover 23 can be located behind the dust collection plate 10. Air can pass through the dust collection plate 10 through the openings 21H and 23H formed on the inner sides of the first cover 21 and the second cover 23, respectively.

[0077] Reference Figure 1 and Figure 3 The filter assembly 3 may include a plate-shaped structure. The plate-shaped structure may include at least one of a filter mesh 40 and a grid 50 having a plurality of openings 51.

[0078] In other words, the filter assembly 3 can be configured as a plate shape. The filter assembly 3 can have a shape corresponding to the shape of the dust collection assembly 2 (e.g., quadrilateral or circular). The filter screen 40 and the grid 50 can be configured as plate shapes and can have shapes corresponding to the shape of the dust collection plate 10. The plate-shaped structures can be formed using conductive or semi-conductive materials. In other words, the filter screen 40 and the grid 50 can be formed using conductive or semi-conductive materials.

[0079] The filter screen 40 and the grille 50 can be integrally formed or detachably arranged. When the filter assembly 3 is arranged perpendicular to the ground, the grille 50 can be positioned in front of or behind the filter screen 40. The grille 50 can protrude from the surface of the filter screen 40. The grille 50 can support and protect the filter screen 40.

[0080] Figure 4 The configuration of an electrostatic precipitator according to one embodiment is illustrated in the figures. Figure 5 A high-voltage electrode according to a first embodiment is shown. Figure 6 A low-voltage electrode according to the first embodiment is shown.

[0081] Reference Figure 4 , Figure 5 as well as Figure 6 The dust collection plate 10 can be formed by stacking multiple electrodes 100 and 200. The dust collection plate 10 may include a high-voltage electrode 100 as a positive electrode and a low-voltage electrode 200 as a negative electrode. Multiple high-voltage electrodes 100 and low-voltage electrodes 200 can be provided respectively. The high-voltage electrodes 100 and low-voltage electrodes 200 can be arranged alternately and stacked. The high-voltage electrode 100 can be arranged with an appropriate distance from the low-voltage electrode 200 to prevent sparks from being generated between the high-voltage electrode 100 and the low-voltage electrode 200.

[0082] The dust collection plate 10 can be electrically connected to the power supply unit 300. The power supply unit 300 can apply a high voltage to the high voltage electrode 100. The power supply unit 300 may include various circuits for applying voltage to the high voltage electrode 100 and / or the low voltage electrode 200. The low voltage electrode 200 can be electrically connected to the grounding part G, and a low voltage can be applied to the low voltage electrode 200.

[0083] If a predetermined voltage is applied to the high-voltage electrode 100 and the low-voltage electrode 200, an electric field can be formed between the high-voltage electrode 100, which is the positive electrode, and the low-voltage electrode 200, which is the negative electrode. Here, for the positive and negative electrodes, the electrode with the higher potential can be represented as the positive electrode, and the electrode with the lower potential can be represented as the negative electrode, based on the potential difference between the two electrodes.

[0084] The high-voltage electrode 100 may include a first dielectric layer 101 and a first conductive electrode layer 103 disposed inside the first dielectric layer 101. The first dielectric layer 101 may include a first upper dielectric layer 101a disposed on the upper part with reference to the first conductive electrode layer 103 and a first lower dielectric layer 101b disposed on the lower part.

[0085] The first dielectric layer 101 can also be formed as a single unit without distinguishing between the upper and lower parts. For example, the high-voltage electrode 100 can be manufactured by a double injection molding method in which the first dielectric layer 101 is injection molded by inserting a conductive material that forms the first conductive electrode layer 103.

[0086] An opening 110 may be formed in the first dielectric layer 101 of the high-voltage electrode 100. A portion of the first conductive electrode layer 103 of the high-voltage electrode 100 may be exposed to the outside through the opening 110. The opening 110 may be formed in the overlapping portion of the first upper dielectric layer 101a and the first lower dielectric layer 101b. The opening 110 may be formed in a line shape on one side of the first dielectric layer 101.

[0087] One side of the first dielectric layer 101 can be the upstream side of the first dielectric layer 101 with reference to the F direction of airflow. The first conductive electrode layer 103 can be in close contact with the upstream side of the first dielectric layer 101 where the opening 110 is formed. Thus, the first conductive electrode layer 103 can be exposed to the outside through the opening 110. The opening 110 can be formed not only on the upstream side of the first dielectric layer 101, but also on the downstream side.

[0088] The low-voltage electrode 200 may include a second dielectric layer 201 and a second conductive electrode layer 203 disposed within the second dielectric layer 201. The second dielectric layer 201 may include a second upper dielectric layer 201a disposed above the second conductive electrode layer 203 and a second lower dielectric layer 201b disposed below. The second dielectric layer 201 may also be formed as a single unit without distinguishing between the upper and lower portions.

[0089] Air can pass through the filter assembly 3 and the dust collection plate 10 in the F direction. The air can become charged before reaching the dust collection plate 10. The air can become charged while passing through the filter assembly 3. The charged air can pass between the high-voltage electrode 100 and the low-voltage electrode 200.

[0090] The dust collection plate 10 can release ions m, causing aerosols in the air to become positively (+) or negatively (-). The first conductive electrode layer 103, exposed to the outside through the opening 110 of the high-voltage electrode 100, can release ions m into the space. The air can come into contact with the released ions m and become charged. The aerosols in the air can become positively (+) or negatively (-). The opening 110 of the high-voltage electrode 100 can be referred to as the "discharge section".

[0091] When the aerosol in the air is positively charged (+), it can adhere to the low-voltage electrode 200, which serves as the negative electrode. When the aerosol is negatively charged (-), it can adhere to the high-voltage electrode 100, which serves as the positive electrode. Therefore, the air passing through the electrostatic precipitator 1 can be discharged in a clean state with aerosols removed.

[0092] If air is charged by releasing ions m through the opening 110 of the high-voltage electrode 100 formed in the dust collection plate 10, no additional discharge section is required, thus allowing the electrostatic precipitator 1 to be manufactured in a thinner form. In addition, the number of components in the electrostatic precipitator 1 can be reduced, thereby reducing manufacturing costs.

[0093] The filter assembly 3, consisting of at least one of the filter screen 40 and the grid 50, can filter impurities (e.g., dust) having particles larger than the particles of the aerosol captured by the dust collection plate 10 of the dust collection assembly 2.

[0094] Furthermore, if the filter assembly 3 is entirely formed of a non-conductive material, dielectric polarization may occur in the filter assembly 3 due to the dielectric properties of the non-conductive material. In this case, ions m accumulate in the filter assembly 3, and the filter assembly 3 becomes potentially charged. Therefore, the potential difference between the high-voltage electrode 100 of the dust collection plate 10 and the filter assembly 3 decreases, thereby reducing the charge of the aerosol flowing into the dust collection plate 10 and consequently reducing the aerosol collection efficiency.

[0095] When the filter assembly 3 is entirely formed of a conductive material and is connected to the grounding part G, ions m released from the high-voltage electrode 100 of the dust collection plate 10 may rapidly flow out through the filter assembly 3 to the grounding part G. The surface resistance of the conductive material can be less than 10 ohms. 6 [ohm / sq]. Therefore, ions m cannot diffuse into space, and the charge of aerosols flowing into the dust collection plate 10 decreases, thereby reducing the aerosol collection efficiency. In addition, sparks may be generated when the conductive material filter assembly 3 is arranged adjacent to the high-voltage electrode 100.

[0096] If the filter assembly 3 is entirely formed of a semi-conductive material, an uneven electric field may form between the area near the grounding part G and the area away from the grounding part G on the surface of the filter assembly 3. In this case, ions m released from the high-voltage electrode 100 may accumulate in more areas of the filter assembly 3. Therefore, it is possible to reduce the charge of aerosols in the air flowing into the dust collection plate 10 and to reduce the aerosol collection efficiency.

[0097] In the prior art, problems arising from the formation of the filter screen 40 and grid 50 constituting the filter assembly 3 using non-conductive, conductive, or semi-conductive materials are not considered.

[0098] To address this problem, the disclosed electrostatic precipitator 1 may include a potential stabilizing unit disposed between the filter assembly 3 and the grounding portion G to stabilize the potential of the filter assembly 3. The potential stabilizing unit may be disposed between a plate-shaped structure formed by at least one of the filter screen 40 and the grid 50 and the grounding portion G. The potential stabilizing unit may include a relay 310 that connects or disconnects the plate-shaped structure from the grounding portion G. That is, the relay 310 may be disposed between the plate-shaped structure formed by at least one of the filter screen 40 and the grid 50 and the grounding portion G. The relay 310 is a switch that can be controlled to be turned on / off by the control unit 320.

[0099] Relay 310 can be opened or closed based on a preset cycle. If relay 310 is opened (i.e., relay 310 is off), the connection between filter assembly 3 and grounding part G is broken. If relay 310 is open, a portion of the ions m released from the high-voltage electrode 100 of dust collection plate 10 can diffuse into the external space upstream of filter assembly 3, while another portion of the ions m can accumulate in filter assembly 3. Therefore, even if filter assembly 3 is formed using a conductive material, ions m can accumulate in filter assembly 3 when relay 310 is open. That is, even if the filter screen 40 and grid 50 constituting filter assembly 3 are formed using a conductive material, ions m released from dust collection plate 10 can diffuse into space through filter assembly 3. Accordingly, the dust collection efficiency of dust collection plate 10 can be improved.

[0100] Furthermore, even if the filter assembly 3 is formed using a semi-conductive material, if the relay 310 is turned on, the filter assembly 3 will not be connected to the grounding part G. Therefore, ions m can be uniformly distributed on the surface area of ​​the filter screen 40 and the grid 50 formed using the semi-conductive material, and diffusion of ions m can occur from the entire surface area of ​​the filter assembly 3 to the upstream external space.

[0101] Furthermore, during the predetermined time period while relay 310 is in the open state, the potential of filter element 3 may increase. If the potential difference between filter element 3 and high-voltage electrode 100 decreases, discharge from high-voltage electrode 100 cannot proceed smoothly. If relay 310 is closed (i.e., relay 310 is ON), ions accumulated in filter element 3 flow out to grounding portion G. Therefore, the potential difference between filter element 3 and high-voltage electrode 100 can be restored, and discharge from high-voltage electrode 100 can proceed smoothly again. For example, when the potential of filter element 3 becomes the same as the potential of high-voltage electrode 100 (i.e., when the relative potential of filter element 3 to the potential of high-voltage electrode 100 becomes 1), ions accumulated in filter element 3 can be removed by turning on relay 310.

[0102] After closing relay 310 to restore the potential difference between filter assembly 3 and high voltage electrode 100, diffusion of ions through filter assembly 3 can be achieved by reopening relay 310.

[0103] The closing time of relay 310 is set to be shorter than the opening time of relay 310. That is, the closing time of relay 310 is set to be shorter than the opening time of relay 310. The ratio of the closing time (ON time) of relay 310 relative to a preset period can be set to less than or equal to 0.1. This is because when relay 310 is turned on, the ions accumulated in filter assembly 3 flow out to grounding part G in a very short time.

[0104] Additionally, the potential stabilization section may include a resistive element R. For example, the resistive element R may be disposed between the relay 310 and the grounding part G. The resistive element R can prevent excessive current from flowing through the filter assembly 3 and can prevent sparks from being generated between the filter assembly 3 and the dust collection plate 10. Furthermore, the potential stabilization section implemented using the resistive element R can make the rate at which ions flow out through the grounding part G relatively slow.

[0105] The control unit 320 can control the operation of the electrostatic precipitator 1. The control unit 320 can be electrically connected to the power supply unit 300 and the relay 310, and can control the power supply unit 300 and the relay 310 respectively. The control unit 320 can control the power supply unit 300 to supply power to the dust collection plate 10 based on an operation start command for the electrostatic precipitator 1. Furthermore, the control unit 320 can open or close the relay 310 based on a preset cycle.

[0106] The control unit 320 can be implemented using a control circuit and can be installed in the electrostatic precipitator 1 or in an air conditioner or air purifier on which the electrostatic precipitator 1 is installed. For example, if the operation of the air conditioner or air purifier is started, an operation start command for the electrostatic precipitator 1 can be input.

[0107] The control unit 320 may include a processor and a memory. The memory may remember / store various information required for the operation of the electrostatic precipitator 1. The memory may store instructions, applications, data, and / or programs required for the operation of the electrostatic precipitator 1. The processor may generate control signals for controlling the operation of the electrostatic precipitator 1 based on the instructions, applications, data, and / or programs stored in the memory.

[0108] The memory may include volatile memory such as Static Random Access Memory (S-RAM) or Dynamic Random Access Memory (DRAM) for temporary data storage. Alternatively, the memory may include non-volatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), or Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term data storage.

[0109] A processor, as hardware, can include logic circuits and arithmetic circuits. The processor can process data according to programs and / or instructions provided from memory and generate control signals based on the processing results. The memory and processor can be implemented using a single control circuit or multiple circuits.

[0110] Figure 7 A high-voltage electrode according to a second embodiment is shown. Figure 8 A high-voltage electrode according to a third embodiment is shown.

[0111] Reference Figure 7 Multiple openings 120 in a straight line shape can be formed on one side of the high-voltage electrode 100. These openings 120 can be formed in the overlapping portion of the first upper dielectric layer 101a and the first lower dielectric layer 101b of the high-voltage electrode 100. The openings 120 can be formed on the upstream and / or downstream side of the first dielectric layer 101.

[0112] Reference Figure 8 The upstream side of the first conductive electrode layer 103 of the high-voltage electrode 100 can be formed in a sawtooth shape. In the F direction of airflow (refer to...) Figure 4 Based on the direction of airflow (F), the upstream side of the first conductive electrode layer 103 can be formed to protrude in a sawtooth shape. The upstream side of the first dielectric layer 101 can be formed to correspond to the shape of the first conductive electrode layer 103. That is, the upstream side of the first dielectric layer 101 can be formed to protrude in a sawtooth shape based on the direction of airflow (F). The opening 130 can be formed to expose the upstream side of the first conductive electrode layer 103 to the outside of the first dielectric layer 101. Since the first conductive electrode layer 103 exposed to the outside is formed in a sawtooth shape, energy can be concentrated. The opening 130 can also be provided on the downstream side of the first dielectric layer 101.

[0113] Figure 5 , Figure 7 as well as Figure 8 The openings 110, 120, and 130 of the high-voltage electrode 100 described herein differ only in shape; the release of ions from the first conductive electrode layer 103, which exposes a portion of itself to the outside through the openings 110, 120, and 130, is the same. Apart from this, the high-voltage electrode 100 can have various shapes.

[0114] Figure 9 A low-voltage electrode according to a second embodiment is shown.

[0115] Reference Figure 9 The low-voltage electrode 200 of the dust collection plate 10 may include multiple openings 205. Multiple straight-line shaped openings 205 may also be formed on the upstream side of the low-voltage electrode 200. Additionally, openings 205 may also be provided on the downstream side of the low-voltage electrode 200. Forming openings 205 on the low-voltage electrode 200 can improve the charging effect of the aerosol. The openings 205 are illustrated in a straight-line shape and arranged at predetermined intervals, but are not limited to this arrangement. The openings 205 can have various shapes, and their positions can be varied.

[0116] Figure 10 This is a flowchart illustrating a control method for an electrostatic precipitator according to an embodiment.

[0117] Reference Figure 10 The control unit 320 of the electrostatic precipitator 1 can control the power supply unit 300 to supply power to the dust collection plate 10. In addition, the control unit 320 can open the relay 310 (relay disconnect) (501) based on the supply of power to the dust collection plate 10.

[0118] The control unit 320 can control the relay 310 based on a preset period (e.g., 1 second) to open or close the relay 310. In other words, the control unit 320 can control the relay 310 based on a preset period to repeatedly turn the relay 310 on and off (502). The relay 310 can be turned on for a preset closing time (e.g., 0.1 seconds) and turned off for a preset opening time (e.g., 0.9 seconds) in each preset period.

[0119] The switching cycle of relay 310 can be designed differently depending on the characteristics of the electrostatic precipitator 1. For example, the switching cycle of relay 310 can be determined based on the rate of change of ion concentration measured at a position in front of the electrostatic precipitator 1. An additional ion sensor (not shown) can be used to measure the ion concentration at an external position in front of the electrostatic precipitator 1. After the operation of the electrostatic precipitator 1 begins, the ion concentration measured in front of the electrostatic precipitator 1 gradually decreases during a predetermined time when relay 310 is off. This is because the potential difference between the filter assembly 3 and the high-voltage electrode 100 of the dust collection plate 10 decreases. The faster the ion concentration decreases, the shorter the switching cycle time for relay 310 can be determined.

[0120] The control unit 320 can set the closing time of the relay 310 to be shorter than the opening time of the relay 310. That is, the control unit 320 can set the closing time of the relay 310 to be shorter than the opening time of the relay 310. For example, the control unit 320 can set the ratio (duty cycle) of the closing time (ON time) of the relay 310 relative to a preset period to be less than or equal to 0.1.

[0121] As described above, if the potential of the filter element 3 increases and the potential difference between the filter element 3 and the high-voltage electrode 100 decreases when the relay 310 is open, discharge cannot proceed smoothly at the high-voltage electrode 100. If the relay 310 is closed, the ions accumulated in the filter element 3 flow out to the grounding portion G, thus restoring the potential difference between the filter element 3 and the high-voltage electrode 100. For example, the relay 310 can be closed when the relative potential of the filter element 3 with respect to the potential of the high-voltage electrode 100 is 1.

[0122] After the relay 310 of the closed potential stabilization section restores the potential difference between the filter assembly 3 and the high-voltage electrode 100, the diffusion of ions through the filter assembly 3 can be achieved by reopening the relay 310. As described above, by controlling the on / off state of the relay 310 provided between the filter assembly 3 and the grounding section G, ions released from the high-voltage electrode 100 can be effectively diffused, and the dust collection efficiency of the electrostatic precipitator 1 can be improved.

[0123] Additionally, the control unit 320 can close the relay 310 (relay on) (503) based on stopping the power supply to the dust collection plate 10. Power supply to the dust collection plate 10 can be stopped as operation of the electrostatic precipitator 1 ends. The control unit 320 can also turn on the relay 310 at the end of operation of the electrostatic precipitator 1 to connect the filter assembly 3 to the grounding part G. The relay 310 can remain on until the electrostatic precipitator 1 starts operating again. When operation of the electrostatic precipitator 1 ends, the safety of the electrostatic precipitator 1 can be ensured by removing any residual charge on the filter assembly 3.

[0124] Figure 11a , Figure 11b , Figure 11c as well as Figure 11d The operation of a relay installed in an electrostatic precipitator according to one embodiment is shown. Figure 12 This is a graph showing the relative potential and relative ion concentration of a filter assembly that vary due to the operation of a relay provided in an electrostatic precipitator according to one embodiment.

[0125] exist Figure 11a , Figure 11b , Figure 11c as well as Figure 11d In this design, the filter assembly 3 includes at least one of a filter screen 40 and a grid 50. Furthermore, the filter assembly 3 can be formed using a conductive material. Figure 12 The relative potential diagram of filter component 3 shows how the relative potential of filter component 3 relative to the potential of high-voltage electrode 100 changes over time. Additionally, in... Figure 12 The ion concentration graph illustrates the change in ion concentration released to the outside of the electrostatic precipitator 1 over time, and shows the relative ion concentration for the initial ion concentration measured in response to the initial opening of relay 310. The on / off cycle of relay 310 is exemplified by 1 second. Figure 12 In the figure, the starting point of the x-axis is the start time of operation of the electrostatic precipitator 1.

[0126] Reference Figure 11a If power is supplied to the dust collection plate 10, ions m are released from the high-voltage electrode 100 of the dust collection plate 10. In addition, if the relay 310 is turned on (the relay is turned off), a portion of the ions m released from the high-voltage electrode 100 diffuses into the external space upstream of the filter assembly 3, while another portion of the ions m accumulates in the filter assembly 3.

[0127] Reference Figure 11b During the period when relay 310 is open, the amount of ions m accumulated in filter element 3 increases, and the relative potential of filter element 3 with respect to high-voltage electrode 100 increases. Figure 12It was observed that the relative potential of the filter element 3 increased sharply from the initial opening of relay 310 up to time point t1. Furthermore, the concentration of ions m released towards the filter element 3 decreased sharply from the initial opening of relay 310 up to time point t1.

[0128] As the potential difference between the filter element 3 and the high-voltage electrode 100 decreases, discharge from the high-voltage electrode 100 becomes difficult, and the amount of ions m diffusing to the front of the filter element 3 also decreases. Therefore, the rate of increase of the relative potential of the filter element 3 observed between time point t1 and time point t2, as well as the rate of decrease of the ion concentration measured in front of the filter element 3, decreases.

[0129] Reference Figure 11c As relay 310 is closed, the ions m accumulated in filter assembly 3 flow out to grounding part G. Therefore, the potential difference between filter assembly 3 and high-voltage electrode 100 is restored. Consequently, the discharge of high-voltage electrode 100 proceeds smoothly again, and the amount of ions m released from high-voltage electrode 100 increases.

[0130] Reference Figure 12 From time point t2 to time point t3, relay 310 is closed. That is, relay 310 is turned on. Therefore, all the ions m accumulated in filter component 3 from time point t2 to time point t3 flow out to grounding part G. The relative potential of filter component 3 returns to 0, and the relative concentration of ions m released in front of filter component 3 returns to 1.

[0131] Reference Figure 11d As relay 310 is reopened, a portion of the ions m released from high-voltage electrode 100 diffuses into the external space upstream of filter assembly 3, while another portion of the ions m accumulates in filter assembly 3. Figure 12 It was observed that as relay 310 was reopened at time t3, the relative potential of filter component 3 increased sharply until time t4, and the relative concentration of ions m released in front of filter component 3 decreased.

[0132] Figure 13 An additional embodiment of the electrostatic precipitator, which also includes an RC circuit, is shown. Figure 14 This is a graph showing the relative potential and relative ion concentration of a filter element that varies by the operation of a relay in an electrostatic precipitator including an RC circuit.

[0133] Reference Figure 13The electrostatic precipitator 1 may include a potential stabilizing unit disposed between the filter assembly 3, which is a plate-shaped structure, and the grounding portion G. As described above, the potential stabilizing unit may include a relay 310, and may also include an RC circuit 330 connected in parallel with the relay 310. The RC circuit 330 may be disposed between the filter assembly 3 and the grounding portion G. The RC circuit 330 may include a resistor R1 and a capacitor C1, which may be connected in series.

[0134] With relay 310 open, RC circuit 330 can reduce the rate at which ions accumulate in filter element 3 and lower the relative potential of filter element 3. RC circuit 330 can prevent ion m saturation in filter element 3. The potential of filter element 3 can be maintained below that of high-voltage electrode 100 by means of RC circuit 330. Therefore, with both relay 310 and RC circuit 330 present, a higher concentration of ions released towards the electrostatic precipitator 1 can be observed.

[0135] Reference Figure 14 An embodiment of the electrostatic precipitator 1 including a relay 310 and an additional embodiment of the electrostatic precipitator 1 including both a relay 310 and an RC circuit 330 are compared. A dashed graph illustrates the change in the first relative potential of the filter element 3 and the change in the first relative ion concentration measured in front of the filter element 3 when the RC circuit 330 is absent. A real-time graph illustrates the change in the second relative potential of the filter element 3 and the change in the second relative ion concentration measured in front of the filter element 3 when the RC circuit 330 is present.

[0136] exist Figure 14 It was observed that, in the presence of the RC circuit 330, the rate of increase in the relative potential of the filter assembly 3 after the relay 310 is opened and the rate of decrease in the ion concentration measured in front of the filter assembly 3 are relatively slower. Furthermore, it was observed that the potential of the filter assembly 3 is consistently maintained below that of the high-voltage electrode 100 by means of the RC circuit 330, resulting in a higher concentration of ions released in front of the electrostatic precipitator 1.

[0137] Figure 15 An electrostatic precipitator according to another embodiment, including an ion release section, is illustrated in schematic form.

[0138] Reference Figure 15The electrostatic precipitator 1 may include an ion release section connected to the filter assembly 3, which releases ions m moving from the high-voltage electrode 100 towards the filter assembly 3 to the outside of the electrostatic precipitator 1. That is, ions m can move along the surface of the filter assembly 3, which is composed of the filter screen 40 and / or the grid 50, towards the ion release section and can be released to the outside through the ion release section. Corona discharge can occur in the carbon brush 341 and the metal discharge pin 342, thereby releasing ions m to the outside.

[0139] The ion release section can be configured as at least one of a carbon brush 341 and a metal discharge pin 342. The carbon brush 341 and the metal discharge pin 342 are configured with a relatively large surface area to volume ratio. The metal discharge pin 342 can have various shapes. For example, the metal discharge pin 342 can be configured as a push-button shape. More than one ion release section can be configured.

[0140] Furthermore, when the ion release unit is connected to the filter assembly 3, the aforementioned relay 310 can be omitted. This is because the ions m supplied to the filter assembly 3 are continuously released to the outside through the ion release unit. Also, when the ion release unit is connected to the filter assembly 3, the filter assembly 3 is not connected to the grounding part G.

[0141] Figure 16 It is shown Figure 15 The graph shows the relative potential of the filter components during operation of the electrostatic precipitator.

[0142] Reference Figure 16 An embodiment in which the filter assembly 3 is connected to an ion release section is compared with an embodiment in which the filter assembly 3 is not connected to an ion release section. The change in relative potential of the filter assembly 3 when the ion release section is absent is shown by a dashed graph. The change in relative potential of the filter assembly 3 when the ion release section is present is shown by a solid graph.

[0143] When the filter assembly 3, including the filter screen 40 and / or the grid 50, is not connected to the grounding part G or the ion release part, ions accumulate on the surface of the filter assembly 3 according to the operation of the electrostatic precipitator 1. Since the ions accumulated on the filter assembly 3 cannot be removed, the potential of the filter assembly 3 will become the same as the potential of the high-voltage electrode 100 over time. Therefore, the high-voltage electrode 100 will not discharge.

[0144] When the filter assembly 3 is connected to an ion release section, although ions accumulate on the surface of the filter assembly 3, a discharge occurs from the ion release section to the upstream outer side of the electrostatic precipitator 1. That is, the charge of the ions moves along the surface of the filter assembly 3 and flows out to the outside through the ion release section. Therefore, the potential of the filter assembly 3 is maintained at a level lower than that of the high-voltage electrode 100, enabling continuous ion release.

[0145] Figure 17 This is an exploded view of a filtering component according to another embodiment. Figure 18 A magnified view shows a portion of the filter screen included in the filter assembly.

[0146] As in Figure 1 and Figure 3 As described above, the filter assembly 3 may include: a plate-shaped structure comprising at least one of a filter mesh 40 and a grid 50 having a plurality of openings. (See reference...) Figure 17 The filter assembly 3 may also include a conductive component 60 disposed at the edge of the plate-shaped structure.

[0147] As an example, the filter 40 and the grid 50 can be formed using a semi-conductive material with uniform overall resistance. The plate-shaped structure can also be referred to as a semi-conductive structure. The semi-conductive filter 40 and the semi-conductive grid 50 can be formed integrally or disposed separately. The conductive component 60 can also be referred to as an "edge electrode".

[0148] As another example, see Figure 18 The filter screen 40 can be formed using a combination of an insulator and a conductive material, or a combination of an insulator and a semi-conductive material. In other words, the filter screen 40 may include a first portion 41 formed using an insulator and a second portion 42 formed using a conductive or semi-conductive material. The first portion 41 and the second portion 42 may each include multiple filaments. The first portion 41 of the filter screen 40 may include multiple filaments arranged laterally and formed using an insulator. The second portion 42 of the filter screen 40 may include multiple filaments arranged longitudinally and formed using a conductive or semi-conductive material. The first filaments of the first portion 41 and the second filaments of the second portion 42 of the filter screen 40 may be arranged perpendicular to each other to form a lattice pattern. The filaments corresponding to the first portion 41 are shown in solid lines, and the filaments corresponding to the second portion 42 are shown in dashed lines.

[0149] The filter assembly 3 can be configured as a plate shape. The filter assembly 3 can have a shape corresponding to the shape of the dust collection assembly 2 (e.g., quadrilateral or circular). In other words, the plate-shaped structure can have various shapes (e.g., quadrilateral or circular). The filter assembly 3 can be arranged at a predetermined distance from the dust collection plate 10. Preferably, the filter assembly 3 can be arranged at a distance between 4 mm and 10 mm from the dust collection plate 10.

[0150] exist Figure 17The illustration shows an embodiment in which a conductive component 60 is provided at the edge of a plate-shaped structure in which the filter 40 and the grid 50 are formed as a single unit. However, the filter 40 and the grid 50 can be provided separately, and the conductive component 60 can also be provided at the respective edges of the filter 40 and the grid 50.

[0151] The conductive component 60 may be disposed in at least a portion of the edge of the plate-shaped structure. Figure 17 In this embodiment, the conductive component 60 is configured to cover the entire edge of the plate-shaped structure, but as described later, the conductive component 60 may also be provided on a portion of the edge of the plate-shaped structure.

[0152] When the filter assembly 3 is arranged perpendicular to the ground, the grille 50 can be positioned in front of or behind the filter screen 40. The grille 50 can be integrally formed with the filter screen 40 or can be combined with the filter screen 40. The grille 50 can protrude from the surface of the filter screen 40. The grille 50 may include multiple openings 51. The grille 50 can support the filter screen 40 and protect the filter screen 40.

[0153] Figure 19 It is shown in a diagram. Figure 17 The structure of the electrostatic precipitator shown is as follows.

[0154] As described above, if the filter assembly 3 is entirely formed of a non-conductive material, dielectric polarization may occur in the filter assembly 3 due to the dielectric properties of the non-conductive material. In this case, ions m accumulate in the filter assembly 3, and the filter assembly 3 has a potential. Therefore, the potential difference between the high-voltage electrode 100 of the dust collection plate 10 and the filter assembly 3 decreases, thereby reducing the charge of the aerosol flowing into the dust collection plate 10, and consequently reducing the aerosol collection efficiency.

[0155] If the filter assembly 3 is entirely formed of a conductive material and is connected to the grounding part G, the ions m released from the high-voltage electrode 100 of the dust collection plate 10 can quickly flow out to the grounding part G through the filter assembly 3. The surface resistance of the conductive material can be less than 10 ohms. 6 [ohm / sq]. Therefore, ions m cannot diffuse into space, and the charge of aerosols flowing into the dust collection plate 10 decreases, thereby reducing the aerosol collection efficiency. In addition, when the filter assembly 3 formed using conductive material is arranged adjacent to the high-voltage electrode 100, sparks may be generated.

[0156] If the filter assembly 3 is entirely formed of a semi-conductive material, an uneven electric field may form between the area of ​​the surface region of the filter assembly 3 near the grounding part G and the area away from the grounding part G. In this case, ions m released from the high-voltage electrode 100 may accumulate in more areas of the filter assembly 3. Therefore, it is possible to reduce the charge of aerosols in the air flowing into the dust collection plate 10 and to reduce the aerosol collection efficiency.

[0157] To address this problem, the filter assembly 3 of the disclosed electrostatic precipitator 1 may include conductive components 60 disposed at the edge of a plate-shaped structure. The plate-shaped structure may include at least one of a filter screen 40 and a grid 50. For example, the filter screen 40 and the grid 50, formed using a semi-conductive material, may have 10... 6 [ohm / sq] or higher and 10 11 The surface resistance is below [ohm / sq], but is not limited to this, and can have different surface resistances depending on the discharge characteristics.

[0158] The conductive component 60 of the filter assembly 3 can diffuse ions m released from the high-voltage electrode 100 of the dust collection plate 10 by forming an electric field in the plate-shaped structures 40 and 50. The conductive component 60 can be disposed at the edge of the plate-shaped structures 40 and 50 and form a uniform electric field in the plate-shaped structures 40 and 50. The ions m released from the high-voltage electrode 100 can be uniformly distributed throughout the entire area of ​​the plate-shaped structures 40 and 50. Therefore, the dust collection efficiency can be improved.

[0159] The conductive component 60 can be connected to the grounding part G. A resistive element R can be provided between the conductive component 60 and the grounding part G. The resistive element R can prevent excessive current from flowing through the semiconducting structures 40 and 50. For example, the resistive element R can be set to 10. 6 [ohm] and above and 10 11 The resistance value can be [ohm] or less, but is not limited to this, and can vary depending on the discharge characteristics. Even if the filter assembly 3 is arranged close to the dust collection plate 10, the resistive element R can be used to prevent sparks and discharge noise. The resistive element R can be referred to as a potential stabilizing part that stabilizes the potential of the filter assembly 3.

[0160] Although Figure 19 Although not shown in the diagram, a relay 310 may also be provided between the conductive component 60 and the grounding portion G, or between the conductive component 60 and the resistive element R. For example, in... Figure 4As described above, if relay 310 is turned on, the filter assembly 3 is not connected to the grounding part G. Therefore, ions m can be uniformly distributed on the surface area of ​​the filter screen 40 and the grid 50 formed by the semi-conductive material, and diffusion of ions m can occur from the entire surface area of ​​the filter assembly 3 to the upstream external space. That is, by connecting relay 310 to the filter assembly 3 and controlling relay 310 to turn on / off, the diffusion of ions m and the dust collection efficiency of the electrostatic precipitator 1 can be further improved.

[0161] Figure 20 A first configuration of a conductive component disposed on a filter assembly is shown.

[0162] Figure 20 It shows Figure 19 The cross-sections of the quadrilateral plate-shaped structures 40 and 50 cut along line A-A' are shown. According to one embodiment, a conductive member 60a may be disposed at the edge of the plate-shaped structures 40 and 50. For example, the conductive member 60a may have a bent shape to surround the edge of the plate-shaped structures 40 and 50. The cross-section of the conductive member 60a may have a bracket shape.

[0163] The conductive component 60a has a bent cross-section (i.e., a bracket shape) so that it can surround the edges of the plate-shaped structures 40, 50 formed by the filter screen 40 and the grid 50. If this conductive component 60a is charged by ions or a voltage is applied to the conductive component 60a, an electric field can be uniformly formed over the entire area of ​​the plate-shaped structures 40, 50.

[0164] As another example, the conductive component 60 can have a rod shape with a quadrilateral cross-section, and can also be attached to the side surface of the plate-shaped structures 40, 50. Furthermore, the conductive component 60 can be disposed on the edge of the plate-shaped structures 40, 50 in various forms.

[0165] The filter screen 40 and the grille 50 can be formed as a single unit. Alternatively, the filter screen 40 and the grille 50 can be detachably joined. The grille 50 can protrude from the surface of the filter screen 40. The grille 50 can support and protect the filter screen 40.

[0166] The conductive component 60 can be integrally formed with the plate-shaped structures 40 and 50, or it can be configured to be separable from the plate-shaped structures 40 and 50. Furthermore, an insulating component 70 can be provided on the outside of the conductive component 60a to cover it. The insulating component 70 can be coated on the conductive component 60a. With the insulating component 70 provided, sparks can be more effectively prevented between the dust collection assembly 2 and the filter assembly 3, thus further reducing the distance between the plate-shaped structures 40 and 50 and the dust collection plate 10.

[0167] Figure 21 A second form of the conductive component disposed on the filter assembly is shown.

[0168] Reference Figure 21 The conductive component 60b can be disposed between the filter screen 40 and the grid 50. The conductive component 60b can be attached to the surface of the plate-shaped structures 40 and 50. For example, the conductive component 60b can be configured to contact the edge where the wide surface and side surface of the filter screen 40 intersect. Alternatively, the conductive component 60b can be configured to contact the edge surface of the grid 50.

[0169] The conductive component 60b can have a quadrilateral cross-section and can be configured to have a linear shape along the edge of the plate-shaped structures 40 and 50. When the plate-shaped structures 40 and 50 have a quadrilateral plate shape, the conductive component 60b can be attached to the surface of the plate-shaped structures 40 and 50 in a manner that has a rod shape along the edge of the plate-shaped structures 40 and 50.

[0170] in addition, Figure 20 The insulating component 70 described herein can also be applied to Figure 21 In one embodiment, the insulating member 70 may be configured to surround the conductive member 60b disposed between the semi-conductive filter 40 and the semi-conductive grid 50. That is, the insulating member 70 may be configured as the edge of the cover plate-shaped structures 40, 50.

[0171] Figure 22 An example is shown where conductive components are provided at the edge of the grille.

[0172] Reference Figure 22 The filter assembly 3 may also consist only of a grille 50. As described above, the grille 50 may be formed using a semi-conductive material. The semi-conductive grille 50 may have a plate shape and may include multiple openings 51. The openings 51 of the semi-conductive grille 50 may prevent material larger than the size of one opening 51 from flowing into the dust collection plate 10.

[0173] Conductive members 60 may be provided at the edge of the semi-conductive grid 50. The conductive members 60 may be provided in at least a portion of the edge of the semi-conductive grid 50. For example, the conductive members 60 may be provided to cover the entire edge of the semi-conductive grid 50. Alternatively, the conductive members 60 may be provided in only a portion of the edge of the semi-conductive grid 50.

[0174] Air can pass through the semi-conductive grid 50 and the dust collection plate 10 in the F direction. The dust collection plate 10 can release ions m, causing the aerosols in the air to become positively (+) or negatively (-). The air can become charged before reaching the dust collection plate 10. The air can become charged while passing through the semi-conductive grid 50. The charged air can pass between the high-voltage electrode 100 and the low-voltage electrode 200.

[0175] By arranging conductive components 60 at the edges of the semi-conductive grid 50, a uniform electric field can be formed throughout the entire area of ​​the semi-conductive grid 50. Therefore, ions m released from the dust collection plate 10 can diffuse uniformly throughout the entire area of ​​the semi-conductive grid 50.

[0176] The conductive component 60 can be connected to the grounding part G. A resistive element R can be provided between the conductive component 60 and the grounding part G. The resistive element R can prevent excessive current from flowing through the plate-shaped structures 40 and 50. For example, the resistive element R can be set to 10. 6 [ohm] and above and 10 11 The resistance value can be [ohm] or less, but is not limited to this, and can vary depending on the discharge characteristics. Therefore, even if the semiconductive grid 50 is arranged adjacent to the dust collection plate 10, sparks and discharge noise can be prevented.

[0177] When the plate-shaped structures 40, 50 and the dust collection plate 10 are arranged at sufficiently far apart positions, sparks may not be generated between the plate-shaped structures 40, 50 and the dust collection plate 10. Therefore, the resistive element R can be omitted between the conductive part 60 and the grounding part G.

[0178] in addition, Figure 20 The insulating component 70 described herein may also be disposed on the outside of the conductive component 60 in such a manner as to cover the conductive component 60.

[0179] Figure 23 An example is shown where conductive components are positioned at the edge of the filter screen.

[0180] Reference Figure 23 The filter assembly 3 may also consist only of a filter screen 40. As described above, the filter screen 40 may have a plate shape and may include multiple micropores. The filter screen 40 can prevent substances of a predetermined size or larger from flowing into the dust collection plate 10. The filter screen 40 may be formed using a semi-conductive material with uniform overall resistance, or it may be formed using a combination of an insulator and a conductive material, or a combination of an insulator and a semi-conductive material.

[0181] A conductive component 60 may be provided on the edge of the filter screen 40. The conductive component 60 may be provided on at least a portion of the edge of the filter screen 40. For example, the conductive component 60 may be provided to cover the entire edge of the filter screen 40. The conductive component 60 may also be provided on a portion of the edge of the filter screen 40. The conductive component 60 may also function as a support for the filter screen 40.

[0182] Air can pass through the filter 40 and the dust collection plate 10 in the F direction. The dust collection plate 10 can release ions m, causing the aerosols in the air to become positively (+) or negatively (-). The air can become charged before reaching the dust collection plate 10. The air can become charged while passing through the filter 40. The charged air can pass between the high-voltage electrode 100 and the low-voltage electrode 200.

[0183] By arranging conductive components 60 at the edges of the filter screen 40, a uniform electric field can be formed over the entire area of ​​the filter screen 40. Therefore, ions m released from the dust collection plate 10 can diffuse uniformly throughout the entire area of ​​the filter screen 40.

[0184] The conductive component 60 can be connected to the grounding part G. Figure 23 An embodiment is shown in which the resistive element R is omitted between the conductive component 60 and the grounding portion G. When the filter screen 40 and the dust collection plate 10 are arranged at sufficiently far apart positions, sparks may not be generated between the filter screen 40 and the dust collection plate 10, so the resistive element R can also be omitted between the conductive component 60 and the grounding portion G.

[0185] Figure 24 An electrostatic precipitator according to yet another embodiment is shown.

[0186] Reference Figure 24 The dust collection plate 10 can utilize a high-voltage carbon brush electrode 400 and a dust collection filter 410 that collects aerosols charged by the carbon brush electrode 400. The carbon brush electrode 400 can be connected to a power supply unit 300, which can apply a high voltage to the carbon brush electrode 400. When a high voltage is applied to the carbon brush electrode 400, the carbon brush electrode 400 can discharge, ionizing molecules in the air and releasing ions. The ions released by the carbon brush electrode 400 can charge aerosols in the air.

[0187] Ions released from the carbon brush electrode 400 diffuse into space. The filter assembly 3 may be located upstream of the carbon brush electrode 400 in the airflow path. The carbon brush electrode 400 and the filter assembly 3 may be arranged at a predetermined distance apart. As described above, the filter assembly 3 may include at least one of a filter screen 40 and a grille 50, and a conductive component 60 is provided at the edge of the filter assembly 3.

[0188] exist Figure 24In this example, the filter 40, grid 50, and conductive component 60 are located upstream of the carbon brush electrode 400. The filter 40, grid 50, and conductive component 60 allow ions released from the carbon brush electrode 400 to diffuse more effectively. Because an electric field is uniformly formed in the filter 40 and grid 50 by the conductive component 60, ions can diffuse uniformly throughout the entire area of ​​the filter assembly 3. Therefore, the charge of the aerosol can be increased.

[0189] The ionized aerosols released by the carbon brush electrode 400 can be captured by the dust collection filter 410 located downstream of the airflow path. The dust collection filter 410 can generate an electric field when a voltage is applied, thereby allowing the charged aerosols to adhere to the dust collection filter 410.

[0190] The dust collection filter 410 may include multiple high-voltage electrodes and multiple low-voltage electrodes, similar to the dust collection plate 10 described above. However, due to the presence of the carbon brush electrode 400 that generates ions, openings may not be provided in the high-voltage electrodes and / or low-voltage electrodes of the dust collection filter 410. That is, the dust collection filter 410 may not generate ions.

[0191] Figure 25 , Figure 26 as well as Figure 27 Various embodiments of symmetrically arranged conductive components are shown.

[0192] Reference Figure 25 The conductive components 60 disposed on the edges of the plate-shaped structures 40 and 50 can be divided into multiple parts. For example, conductive components 61a and 61b can be disposed on the first side and the second side opposite to the first side of the plate-shaped structures 40 and 50, respectively. The conductive component 61a disposed on the first side and the conductive component 61b disposed on the second side can be symmetrical about the center line of the plate-shaped structures 40 and 50.

[0193] Reference Figure 26 The lengths of the conductive components 62a and 62b provided on the first and second sides of the plate-shaped structures 40 and 50 may be shorter than the lengths of the first and second sides. Furthermore, the lengths of the conductive components 62a and 62b provided on the first and second sides of the plate-shaped structures 40 and 50 may be different from each other.

[0194] Reference Figure 27The conductive component 60 may include: a first conductive component 63a, disposed adjacent to a first vertex of the plate-shaped structures 40 and 50; and a second conductive component 63b, disposed adjacent to a second vertex located diagonally opposite the first vertex. The first length of the first conductive component 63a and the second length of the second conductive component 63b may be shorter than the length of one side of the plate-shaped structures 40 and 50. Furthermore, the first length of the first conductive component 63a and the second length of the second conductive component 63b may be different from each other.

[0195] Figure 28 , Figure 29 as well as Figure 30 Various embodiments in which conductive components are arranged asymmetrically are shown.

[0196] Reference Figure 28 , Figure 29 as well as Figure 30 The conductive components 64, 65, 66a, 66b, and 66c can also be configured with various lengths at the edges of the plate-shaped structures 40 and 50. For example... Figure 28 and Figure 29 As shown, conductive components 64 and 65 may be provided only on one side (e.g., the left or right side) of the plate-shaped structures 40 and 50. Figure 28 The length of the conductive component 64 shown can be the same as the length of one side of the plate-shaped structures 40 and 50. Figure 29 The length of the conductive component 65 shown may be shorter than the length of one side of the plate-shaped structures 40 and 50.

[0197] like Figure 30 As shown, conductive components 66a, 66b, and 66c can also be disposed on the three sides of the plate-shaped structures 40 and 50. The conductive component 66a disposed on the upper side of the plate-shaped structures 40 and 50 can be referred to as the upper conductive component, the conductive component 66b disposed on the lower side can be referred to as the lower conductive component, and the conductive component 66c disposed on the right side can be referred to as the right conductive component. The lengths of the conductive components 66a and 66b disposed on the upper and lower sides of the plate-shaped structures 40 and 50 can be the same as or shorter than the lengths of the upper and lower sides. The length of the conductive component 66c disposed on the right side can be the same as or shorter than the length of the right side of the semi-conductive structures 40 and 50.

[0198] In the disclosed electrostatic precipitator, by arranging the structure for diffusing ions upstream of the ion-generating collection plate in the airflow path, the ions can be easily diffused into the external space.

[0199] In the disclosed electrostatic precipitator and its control method, by arranging a potential stabilizing part between the structure that diffuses ions and the grounding part to stabilize the potential of the structure, it is possible to smoothly discharge at the high-voltage electrode of the dust collection plate while preventing ions from accumulating in the structure.

[0200] In the disclosed electrostatic precipitator, conductive components are provided at the edges of the structure used for ion diffusion, making it easier to diffuse the ions generated by the precipitator plate.

[0201] The disclosed electrostatic precipitator includes structures and conductive components that can create a uniform electric field, thereby increasing the charge on aerosols. Furthermore, even when the structures are arranged close to the collection plates, the generation of sparks and discharge noise can be prevented. Therefore, the collection efficiency of aerosols in the air can be improved.

[0202] As described above, the accompanying drawings illustrate the disclosed embodiments. Those skilled in the art will understand that the invention can be implemented in different forms than the disclosed embodiments by changing the technical concept or essential features. The disclosed embodiments are exemplary and should not be construed as limiting.

Claims

1. An electrostatic precipitator, comprising: The dust collection plate releases ions and captures aerosols charged by the ions from the air flowing along the airflow path through the electrostatic precipitator. The power supply unit is electrically connected to the dust collection plate; A plate-shaped structure is arranged upstream of the dust collection plate along the airflow path and includes at least one of a filter screen and a grille having multiple openings; A potential stabilizing part is disposed between the plate-shaped structure and the grounding part to stabilize the potential of the plate-shaped structure; as well as The control unit controls the power supply unit to supply power to the dust collection plates. The potential stabilizing part includes: The relay connects or disconnects the plate-shaped structure from the grounding part. The control unit controls the opening or closing of the relay based on a preset cycle.

2. The electrostatic precipitator according to claim 1, wherein, The control unit sets the closing time of the relay to be shorter than the opening time of the relay.

3. The electrostatic precipitator according to claim 1, wherein, The potential stabilizing unit further includes an RC circuit that can be connected to the plate-shaped structure and can be connected in parallel with the relay.

4. The electrostatic precipitator according to claim 1, wherein, The potential stabilizing part includes a resistive element.

5. The electrostatic precipitator according to claim 1, wherein, The plate-shaped structure is formed using a conductive material.

6. The electrostatic precipitator according to claim 1, wherein, The plate-shaped structure is formed using a semi-conductive material with uniform resistance and includes: The first part utilizes insulators for formation; and The second part is formed using conductive or semi-conductive materials.

7. The electrostatic precipitator according to claim 6, further comprising: A conductive component is disposed on at least a portion of the edge of the plate-shaped structure.

8. The electrostatic precipitator according to claim 7, wherein, The conductive component has a bent shape to surround the edge of the plate-shaped structure.

9. The electrostatic precipitator according to claim 7, wherein, The conductive component is formed between the filter screen and the grille.

10. The electrostatic precipitator according to claim 7, wherein, The plate-shaped structure is configured as a quadrilateral. The conductive components are symmetrically arranged on the first side and the second side opposite to the first side of the plate-shaped structure.

11. The electrostatic precipitator according to claim 7, wherein, The plate-shaped structure is configured as a quadrilateral. The conductive component includes: A first conductive component is disposed adjacent to a first vertex of the plate-shaped structure; and The second conductive component is disposed adjacent to the second vertex, which is located diagonally opposite to the first vertex. The first length of the first conductive component and the second length of the second conductive component are shorter than the length of one side of the plate-shaped structure.

12. The electrostatic precipitator according to claim 7, further comprising: An insulating component is disposed on the outside of the conductive component in such a way as to cover the conductive component.

13. The electrostatic precipitator according to claim 1, wherein, The dust collection plate includes: Multiple high-voltage electrodes, including a first dielectric layer and a first conductive electrode layer, are subjected to a high voltage, with a portion of the first conductive electrode layer exposed to the outside through an opening in the first dielectric layer; and Multiple low-voltage electrodes, including a second dielectric layer and a second conductive electrode layer disposed inside the second dielectric layer, are alternately arranged with the multiple high-voltage electrodes and are subjected to low voltage.

14. A control method for an electrostatic precipitator, wherein, The electrostatic precipitator includes: Dust collection plates capture ionized aerosols from air flowing along the airflow path via an electrostatic precipitator; and The filter assembly is arranged upstream of the dust collection plate along the airflow path. The control method for the electrostatic precipitator includes the following steps: The power supply unit controls the supply of power to the dust collection plates; A relay that opens a potential stabilizing section between the filter assembly and the grounding part by supplying power to the dust collection plate; and The relay is controlled to repeatedly close and open based on a preset cycle.

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