# US 10,870,078 B2 · Air purifier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,078 B2 - Document ID: US10870078B2 - Status: Granted - Kind: B2 - Application number: 15/735,521 - Filed: 2017-09-29 - Published: 2019-11-21 - Granted: 2020-12-22 - Earliest claimed: 2016-10-06 - Assignees: Miro Co., Ltd. - Applicants: Miro Co. Ltd. - Inventors: Dong Jin Seo; Yong Ju Oh; Min Seok Kim; Jeong Won Lee - Web page: https://patentgrep.com/patent/US10870078B2 ## CPC - B01D 47/02: by passing the gas or air or vapour over or through a liquid bath - B01D 53/18: Absorbing units; Liquid distributors therefor (B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32) - B01D 47/028: {by directing the gas through a wetted wire mesh or a perforated plate (B01D47/14 takes precedence)} - B01D 47/16: Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid - B01D 53/78: with gas-liquid contact - B01D 2252/103: Water - B01D 2257/708: Volatile organic compounds V.O.C.'s - B01D 2258/0283: Flue gases - B01D 2258/06: Polluted air - 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) ## Abstract An air cleaner according to an exemplary embodiment of the present invention includes a water tank in which water is contained, a rotating shaft which is mounted in the water tank and rotates, and a rotating body which is coupled to the rotating shaft to rotate in a longitudinal direction of the rotating shaft as a rotational axis and formed with a plurality of rotating blades capable of collecting air, in which the rotating shaft is obliquely mounted to form a predetermined angle with a water surface formed by the water contained in the water tank. ## Claims ### Claim 1 An air cleaner, comprising: a water tank configured to contain water; a rotating shaft mounted in the water tank and configured to rotate; and a rotating body coupled to the rotating shaft and configured to rotate in a longitudinal direction of the rotating shaft as a rotational axis and comprising a plurality of rotating blades capable of collecting air, wherein the rotating shaft is obliquely mounted in a predetermined acute angle with a water surface defined by the water contained in the water tank, and wherein the rotating body is configured to rotate while being partially immersed in the water contained in the water tank to introduce air outside the water into the water and to discharge the introduced air from an inside of the water. ### Claim 2 (depends on 1) The air cleaner of claim 1, wherein at least a part of an upper portion of the water tank is open to allow the air to be freely introduced and discharged. ### Claim 3 (depends on 1) The air cleaner of claim 1, wherein the rotating body includes a rotating center body through-coupled with the rotating shaft and having a hollow shape, and wherein the plurality of rotating blades are disposed to be spaced apart from each other at equal intervals along an outer periphery of the rotating center body. ### Claim 4 (depends on 3) The air cleaner of claim 3, wherein each of the plurality of rotating blades includes a curved portion extending from the rotating center body in an outer direction of the rotational axis and an end thereof is curved in one direction. ### Claim 5 (depends on 4) The air cleaner of claim 4, wherein the end of the curved portion is curved in a rotating direction of the rotating body. ### Claim 6 (depends on 4) The air cleaner of claim 4, wherein the each of the plurality of rotating blades further includes a closure portion extending to one side of the curved portion and configured to collect the air together with the curved portion, and wherein when the plurality of rotating blades rotate, the air outside the water is introduced into the water and the introduced air is discharged from the inside of the water. ### Claim 7 (depends on 6) The air cleaner of claim 6, wherein as the plurality of rotating blades rotate, an other side of the curved portion is open to discharge collected water together with the air. ### Claim 8 (depends on 4) The air cleaner of claim 4, wherein the plurality of rotating blades are installed with a disk-shaped plate coupled to one side of the curved portion and configured to collect the air together with the curved portion, and wherein when the plurality of rotating blades rotate, the air outside the water is introduced into the water and the introduced air is discharged from the inside of the water. ### Claim 9 (depends on 8) The air cleaner of claim 8, wherein the plate comprises: a closure portion configured to collect the air together with the curved portion to introduce the collected air into the water; and air crush portions configured to discharge the collected air from the inside of the water when the plurality of rotating blades rotate and to penetrate the plate in a thickness direction to crush and discharge the discharged air into a plurality of air bubbles, wherein the collected air moves in a direction of the plate by a density difference between the collected air and the water and is crushed through the air crush portions to be discharged as the plurality of air bubbles. ### Claim 10 (depends on 9) The air cleaner of claim 9, wherein as the plurality of rotating blades rotate, an other side of the curved portion is open to discharge collected water together with the air. ### Claim 11 (depends on 1) The air cleaner of claim 1, wherein the water tank comprises an air introduction portion mounted with a fan for forcibly introducing air outside the water tank into the water tank. ### Claim 12 (depends on 11) The air cleaner of claim 11, wherein the water tank further comprises an air discharge port configured to be open to discharge the air from the water tank. ### Claim 13 (depends on 1) The air cleaner of claim 1, further comprising a plurality of rotating bodies, wherein the plurality of rotating bodies have different sizes and lowest heights thereof coincide with each other based on a bottom surface of the water tank.