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    • 18. 发明公开
    • AIR FILTERING UNIT
    • EP4151917A1
    • 2023-03-22
    • EP21197539.6
    • 2021-09-17
    • Carrier Corporation
    • JOSSERAND, OlivierGEYNET, Christophe
    • F24F8/10F24F8/80F24F11/57F24F11/58F24F11/64F24F11/65F24F11/72F24F11/89F24F13/28F24F13/10F24F110/50
    • An air filtering unit 100 for filtering air from an indoor setting, the air filtering unit 100 comprising: a housing 110 comprising: a first indoor inlet air path 111 and a second indoor inlet air path 112 for receiving indoor air, and an outlet 113 for discharge of filtered air, wherein all indoor air entering the housing 110 must flow through the first indoor inlet air path 111 or the second indoor inlet air path 112 in order to reach the outlet 113; an indoor damper arrangement 120 comprising one or more damper elements controllable between at least a first configuration and a second configuration, wherein in the first configuration the first indoor inlet air path 111 is open whilst the second indoor inlet air path 112 is closed to airflow, and wherein in the second configuration the second indoor inlet air path 112 is open whilst the first indoor inlet air path 111 is closed to airflow; a first filter device 130; a second filter device 140, wherein the first filter device 130 has a higher filtering efficiency than the second filter device 140, wherein indoor air flowing through the first indoor inlet air path 111 is directed through the first filter device 130 and indoor air flowing through the second indoor inlet air path 112 is directed through the second filter device 140; a controller 122 for controlling the indoor damper arrangement 120; wherein the controller 122 is configured to communicate with a building management system 150 or a smartphone app and the controller 122 controls the indoor air damper arrangement 120 responsive to instructions received from the building management system 150 or smartphone app; and/or the air filtering unit 100 further comprises an indoor air quality sensor 121 for obtaining a measurement relating to indoor air quality within the indoor setting, wherein the controller 122 controls the indoor air damper arrangement 120 responsive to the measurement such that when the measurement indicates that the indoor air quality is below a predetermined level, the controller 122 is configured to place the indoor damper arrangement 120 in the first configuration, and when the indoor air quality is above the predetermined level the controller 122 places the indoor damper arrangement 120 in the second configuration.