US 11,719,446 B2
Air handling apparatus
Luxi Wang, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Sep. 15, 2020, as Appl. No. 17/21,797.
Claims priority of application No. 202010308119.0 (CN), filed on Apr. 17, 2020.
Prior Publication US 2021/0325053 A1, Oct. 21, 2021
Int. Cl. B01D 46/00 (2022.01); B01D 46/44 (2006.01); B01D 46/46 (2006.01); B01D 46/88 (2022.01); F24F 11/39 (2018.01); F24F 11/526 (2018.01); F24F 1/0073 (2019.01); B01D 46/24 (2006.01); B01D 46/42 (2006.01)
CPC F24F 1/0073 (2019.02) [B01D 46/0005 (2013.01); B01D 46/0086 (2013.01); B01D 46/2403 (2013.01); B01D 46/4227 (2013.01); B01D 46/444 (2013.01); B01D 46/46 (2013.01); B01D 46/88 (2022.01); B01D 2265/028 (2013.01); B01D 2265/04 (2013.01); B01D 2265/06 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An air handling apparatus, comprising:
a shell provided with a hole;
a filter plate that is connected to the shell through a first connecting member and configured to cover the hole;
a filter chamber that is arranged in the shell that is in communication with the hole; and
a filter that is inserted in the filter chamber through the hole, a cross-sectional size of the filter being less than or equal to a cross-sectional size of the hole,
the air handling apparatus further comprises an air purification duct including the filter chamber, and the filter being received in the air purification duct,
the air handling apparatus further includes a filter-replacement reminding device that comprises:
a first air speed sensor and a second air speed sensor that are arranged on both sides of the hole, respectively, both the first air speed sensor and the second air speed sensor being mounted on an inner wall of the air purification duct;
a single-chip microcomputer that is arranged in the shell and electrically connected with the first air speed sensor and the second air speed sensor; and
an alarm that is arranged on an outer wall of the shell and electrically connected with the single-chip microcomputer,
wherein the first air speed sensor and the second air speed sensor are configured to detect air speeds on both sides of the filter, respectively, and the single-chip microcomputer is configured to turn on the alarm to generate a warning sound when a difference between the air speeds on the two sides of the filter exceeds an alarm value.