# US 10,441,912 B2 · Air cleaner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,912 B2 - Document ID: US10441912B2 - Status: Granted - Kind: B2 - Application number: 15/857,886 - Filed: 2017-12-29 - Published: 2018-07-19 - Granted: 2019-10-15 - Earliest claimed: 2017-01-13 - Assignees: Winix Inc. - Applicants: Winix Inc. - Inventors: Chul Min Yoon - Web page: https://patentgrep.com/patent/US10441912B2 ## CPC - B01D 46/44: controlling filtration - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/009: {Identification of filter type or position thereof, e.g. by transponders or bar codes} - B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces - G06K 19/06028: {using bar codes} - 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) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract Disclosed is an air cleaner a body, a cover detachably provided on a front side of the body and configured to have an intake hole to take air into the body, a filter case disposed between the body and the cover such that a filter is attached to the filter case, and an authorized filter sensor attached to the filter and the filter case to sense whether the filter is authorized, wherein the authorized filter sensor includes a transmitting member attached to a lower end portion of the filter or included in the lower end portion of the filter and a detecting member provided on the filter case to sense the transmitting member and detect a variable electrical property. ## Claims ### Claim 1 An air cleaner comprising: a body; a cover detachably provided on a front side of the body and configured to have an intake hole to take air into the body; a filter case disposed between the body and the cover such that a filter is attached to the filter case; and an authorized filter sensor attached to the filter and the filter case to sense whether the filter is authorized, wherein the authorized filter sensor comprises: a transmitting member attached to a lower end portion of the filter or included in the lower end portion of the filter; and a detecting member provided on the filter case to sense the transmitting member and detect a variable electrical property. ### Claim 2 (depends on 1) The air cleaner of claim 1, wherein the transmitting member includes a metal sheet or a metal pad, and the detecting member includes a capacitive sensor. ### Claim 3 (depends on 2) The air cleaner of claim 2, wherein the detecting member is disposed on a rear side of the filter case to face the transmitting member. ### Claim 4 (depends on 2) The air cleaner of claim 2, wherein when the filter is attached to the filter case, the detecting member is configured to detect a change in capacitance and an output voltage of the detection member is changed based on the change in capacitance. ### Claim 5 (depends on 1) The air cleaner of claim 1, further comprising: an air deodorizer disposed in the body to deodorize the air taken via the intake hole; and a controller configured to control an operation of the air deodorizer by determining whether the filter is authorized based on an electrical property detected by the detecting member. ### Claim 6 (depends on 5) The air cleaner of claim 5, wherein the electrical property includes a capacitance or an output voltage, and a capacitance or an output voltage corresponding to the authorized filter is stored in the controller such that whether the filter is authorized is determined by comparing the stored capacitance or output voltage to a capacitance or an output voltage detected by the detecting member. ### Claim 7 An air cleaner comprising: a body; a cover having an intake hole to take air into the body; a filter case disposed between the body and the cover such that a filter is attached to the filter case; a fixing member attached to or included in the filter; a deformable member attached to a top of the fixing member of the filter to be deformed by the air; and a detecting member provided in the filter case to sense the fixing member or the deformable member, wherein the detecting member is configured to determine a status of the filter or whether the filter is authorized. ### Claim 8 (depends on 7) The air cleaner of claim 7, wherein the deformable member is formed of a flexible material, and the detecting member is configured to detect a degree of deformation of the deformable member with respect to the fixing member. ### Claim 9 (depends on 7) The air cleaner of claim 7, wherein the fixing member includes a conductive sheet or a barcode, and the detecting member is configured to detect a capacitance changed by the conductive sheet or recognize the barcode.