# US 10,500,532 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 10,500,532 B2 - Document ID: US10500532B2 - Status: Granted - Kind: B2 - Application number: 15/683,848 - Filed: 2017-08-23 - Published: 2018-03-01 - Granted: 2019-12-10 - Earliest claimed: 2016-08-29 - Assignees: Toyota Boshoku Kabushiki Kaisha - Applicants: Toyota Boshoku Kabushiki Kaisha - Inventors: Yoshinori Inuzuka; Ryusuke Kimura - Web page: https://patentgrep.com/patent/US10500532B2 ## CPC - B01D 46/4236: {Reducing noise or vibration emissions} - B01D 46/0002: {Casings; Housings; Frame constructions} - B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces - F02M 35/0201: {Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof} - F02M 35/1272: {using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes} - F02M 35/14: Combined air cleaners and silencers - B01D 2201/28: Position of the filtering element - 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) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract An air cleaner includes a first housing, a second housing, and a filter element. The first housing has an opening. The second housing has an opening that is opposed to the opening of the first housing. The filter element is arranged between the opening of the first housing and the opening of the second housing. At least one of the first housing and the second housing includes a corner portion, a sound reducing member, and an air chamber. The corner portion is constituted by at least two mutually intersecting inner surfaces of the housing. The sound reducing member includes a sound absorbing portion made of an air permeable material. The sound reducing member bridges the at least two inner surfaces and covers the corner portion. The air chamber is defined between the sound reducing member and the corner portion. ## Claims ### Claim 1 An air cleaner comprising: a first housing including an inlet and an opening; a second housing including an outlet and an opening that is opposed to the opening of the first housing; and a filter element arranged between the opening of the first housing and the opening of the second housing, wherein at least one of the first housing and the second housing includes a corner portion that is constituted by at least two mutually intersecting inner surfaces of the housing, a sound reducing member, which includes a sound absorbing portion made of an air permeable material and is arranged inside the housing, wherein the sound reducing member bridges the at least two inner surfaces and covers the corner portion, and an air chamber, which is defined between the sound reducing member and the corner portion, wherein an outer edge of the sound reducing member is in contact with an inner surface of the housing. ### Claim 2 (depends on 1) The air cleaner according to claim 1, wherein the sound reducing member is arranged inside the first housing, and the corner portion is opposed to the inlet. ### Claim 3 (depends on 2) The air cleaner according to claim 2, wherein the sound reducing member includes an inclined portion provided on a surface of the sound reducing member, and the inclined portion is inclined to approach the filter element as a distance from the inlet increases. ### Claim 4 (depends on 1) The air cleaner according to claim 1, wherein the sound reducing member is arranged inside the first housing, the outer edge of the sound reducing member has a shape more compressed in a thickness direction than a portion of the sound reducing member that is surrounded by the outer edge, and the outer edge of the sound reducing member is in contact with an inner surface of the first housing. ### Claim 5 An air cleaner comprising: a first housing including an inlet and an opening; a second housing including an outlet and an opening that is opposed to the opening of the first housing; and a filter element arranged between the opening of the first housing and the opening of the second housing, wherein at least one of the first housing and the second housing includes a corner portion that is constituted by at least two mutually intersecting inner surfaces of the housing, a sound reducing member, which includes a sound absorbing portion made of an air permeable material and is arranged inside the housing, wherein the sound reducing member bridges the at least two inner surfaces and covers the corner portion, and an air chamber, which is defined between the sound reducing member and the corner portion, wherein the sound reducing member includes a covering layer, which is arranged on a surface of the sound absorbing portion that is opposite to the air chamber, and the covering layer is made of an air permeable material having a lower air permeability than that of the sound absorbing portion. ### Claim 6 (depends on 5) The air cleaner according to claim 5, wherein an outer edge of the sound reducing member is in contact with an inner surface of the housing. ### Claim 7 (depends on 5) The air cleaner according to claim 5, wherein the sound reducing member is arranged inside the first housing, and the corner portion is opposed to the inlet. ### Claim 8 (depends on 7) The air cleaner according to claim 7, wherein the sound reducing member includes an inclined portion provided on a surface of the sound reducing member, and the inclined portion is inclined to approach the filter element as a distance from the inlet increases. ### Claim 9 (depends on 5) The air cleaner according to claim 5, wherein the sound reducing member is arranged inside the first housing, an outer edge of the sound reducing member has a shape more compressed in a thickness direction than a portion of the sound reducing member that is surrounded by the outer edge, and the outer edge of the sound reducing member is in contact with an inner surface of the first housing.