# US 9,873,128 B2 · Electrostatic precipitation type air cleaner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,873,128 B2 - Document ID: US9873128B2 - Status: Granted - Kind: B2 - Application number: 15/052,465 - Filed: 2016-02-24 - Published: 2016-08-25 - Granted: 2018-01-23 - Earliest claimed: 2015-02-25 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Taeyoung Kim; Sangyoon Kim; Okchun Hyun; Yanghwa Lee - Web page: https://patentgrep.com/patent/US9873128B2 ## CPC - B03C 3/47: flat, e.g. plates, discs, gratings - B01D 53/323: {by electrostatic effects or by high-voltage electric fields} - B03C 3/08: characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream - B03C 3/12: characterised by separation of ionising and collecting stations - B03C 3/41: Ionising-electrodes - B03C 3/60: Use of special materials other than liquids - F24F 8/192: by electrical means, e.g. by applying electrostatic fields or high voltages - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - Y02A 50/2351: Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust - B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract An electrostatic precipitation type air cleaner is disclosed herein. The air cleaner includes a charging module to charge dust particles by applied power and a collection module to collect the dust particles charged by the charging module. The collection module includes high voltage electrode plates and low voltage electrode plates disposed opposite the high voltage electrode plates so as to form air passages with the high voltage electrode plates, at least one of the high voltage electrode plates and the low voltage electrode plates includes a conductive member, a dielectric member to surround at least a part of the conductive member and coating layers configured to coat the surfaces of the dielectric member, and the coating layer includes 0.5 w % to 5 w % of zinc oxide. The coating layer including 0.5 w % to 5 w % of zinc oxide may have high antimicrobial activity and maintain high surface hardness. ## Claims ### Claim 1 An electrostatic precipitation type air cleaner comprising: a charging module to charge particles by an applied power; and a collection module to collect the charged particles, the collection module including at least one high voltage electrode plate and at least one low voltage electrode plate, the high and low voltage electrode plates being spaced apart from each other to form an air passage, wherein at least one of the high and low voltage electrode plates comprises: a conductive member, a dielectric member to surround at least a portion of the conductive member, and at least one coating layer to coat a surface of the dielectric member, whereby the coating layer includes 0.5 w % to 5 w % of zinc oxide. ### Claim 2 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes 20 w % to 30 w % of urethane acrylate. ### Claim 3 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes 1 w % to 3 w % of a photoinitiator. ### Claim 4 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes 45 w % to 50 w % of isopropyl alcohol. ### Claim 5 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes at least one of butyl acrylate, pentaerythritol triacrylate, and polyethylene glycol diacrylate. ### Claim 6 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the thickness of the coating layer is 5 μm to 10 μm. ### Claim 7 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein zinc oxide is a powder having a particle size of 5 μm to 1000 μm. ### Claim 8 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the dielectric member includes polymer plastic having a thickness of 50 μm to 500 μm. ### Claim 9 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes 20 w % to 30 w % of urethane acrylate, 1 w % to 3 w % of a photoinitiator, and 45 w % to 50 w % of isopropyl alcohol. ### Claim 10 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the coating layer further includes 28 w % of urethane acrylate, 2 w % of 1-hydroxy cyclohexyl phenyl ketone, 47 w % of isopropyl alcohol, 8 w % of butyl acrylate, 4 w % of pentaerythritol triacrylate, and 8 w % of polyethylene glycol diacrylate. ### Claim 11 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein the conductive member is a screen-print on the dielectric member. ### Claim 12 (depends on 1) The electrostatic precipitation type air cleaner of claim 1, wherein: the dielectric member includes a first dielectric film and a second dielectric film, the conductive member is disposed between the first and second dielectric films, and the coating layer is disposed on the outer surfaces of the first and second dielectric films. ### Claim 13 (depends on 12) The electrostatic precipitation type air cleaner of claim 12, further comprising an adhesive member provided between the first dielectric film and the conductive member, wherein the adhesive member includes a stack part provided on the conductive member and at least one protrusion part that protrudes outside of the edges of the conductive member, and wherein the first dielectric film is adhered to a first surface of the protrusion part and the second dielectric film is adhered to a second surface of the protrusion part. ### Claim 14 (depends on 12) The electrostatic precipitation type air cleaner of claim 12, further comprising an adhesive member provided between the second dielectric film and the conductive member, wherein the adhesive member includes a stack part provided on the conductive member and at least one protrusion part that protrudes outside of the edges of the conductive member, and wherein the first dielectric film is adhered to a first surface of the protrusion part and the second dielectric film is adhered to a second surface of the protrusion part. ### Claim 15 (depends on 13) The electrostatic precipitation type air cleaner of claim 13, wherein: the coating layer further includes 3 w % of zinc oxide, 28 w % of urethane acrylate, 2 w % of 1-hydroxy cyclohexyl phenyl ketone, 47 w % of isopropyl alcohol, 8 w % of butyl acrylate, 4 w % of pentaerythritol triacrylate, and 8 w % of polyethylene glycol diacrylate. ### Claim 16 (depends on 14) The electrostatic precipitation type air cleaner of claim 14, wherein: the coating layer further includes 3 w % of zinc oxide, 28 w % of urethane acrylate, 2 w % of 1-hydroxy cyclohexyl phenyl ketone, 47 w % of isopropyl alcohol, 8 w % of butyl acrylate, 4 w % of pentaerythritol triacrylate, and 8 w % of polyethylene glycol diacrylate.